[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*******************************************************************************
|
|
|
|
* Filename: target_core_transport.c
|
|
|
|
*
|
|
|
|
* This file contains the Generic Target Engine Core.
|
|
|
|
*
|
2013-09-05 22:29:12 +00:00
|
|
|
* (c) Copyright 2002-2013 Datera, Inc.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*
|
|
|
|
* Nicholas A. Bellinger <nab@kernel.org>
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
|
|
* (at your option) any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
#include <linux/net.h>
|
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/string.h>
|
|
|
|
#include <linux/timer.h>
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/blkdev.h>
|
|
|
|
#include <linux/spinlock.h>
|
|
|
|
#include <linux/kthread.h>
|
|
|
|
#include <linux/in.h>
|
|
|
|
#include <linux/cdrom.h>
|
2011-08-30 18:20:44 +00:00
|
|
|
#include <linux/module.h>
|
2012-02-14 00:18:17 +00:00
|
|
|
#include <linux/ratelimit.h>
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
#include <asm/unaligned.h>
|
|
|
|
#include <net/sock.h>
|
|
|
|
#include <net/tcp.h>
|
|
|
|
#include <scsi/scsi.h>
|
|
|
|
#include <scsi/scsi_cmnd.h>
|
2011-05-20 03:19:14 +00:00
|
|
|
#include <scsi/scsi_tcq.h>
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
#include <target/target_core_base.h>
|
2011-11-16 14:46:48 +00:00
|
|
|
#include <target/target_core_backend.h>
|
|
|
|
#include <target/target_core_fabric.h>
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
#include <target/target_core_configfs.h>
|
|
|
|
|
2011-11-14 17:30:30 +00:00
|
|
|
#include "target_core_internal.h"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
#include "target_core_alua.h"
|
|
|
|
#include "target_core_pr.h"
|
|
|
|
#include "target_core_ua.h"
|
|
|
|
|
2013-06-27 00:36:17 +00:00
|
|
|
#define CREATE_TRACE_POINTS
|
|
|
|
#include <trace/events/target.h>
|
|
|
|
|
2011-10-17 17:56:53 +00:00
|
|
|
static struct workqueue_struct *target_completion_wq;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
static struct kmem_cache *se_sess_cache;
|
|
|
|
struct kmem_cache *se_ua_cache;
|
|
|
|
struct kmem_cache *t10_pr_reg_cache;
|
|
|
|
struct kmem_cache *t10_alua_lu_gp_cache;
|
|
|
|
struct kmem_cache *t10_alua_lu_gp_mem_cache;
|
|
|
|
struct kmem_cache *t10_alua_tg_pt_gp_cache;
|
|
|
|
struct kmem_cache *t10_alua_tg_pt_gp_mem_cache;
|
|
|
|
|
|
|
|
static void transport_complete_task_attr(struct se_cmd *cmd);
|
2011-06-13 21:46:09 +00:00
|
|
|
static void transport_handle_queue_full(struct se_cmd *cmd,
|
2011-10-17 17:56:41 +00:00
|
|
|
struct se_device *dev);
|
2013-05-31 07:46:11 +00:00
|
|
|
static int transport_put_cmd(struct se_cmd *cmd);
|
2011-10-17 17:56:53 +00:00
|
|
|
static void target_complete_ok_work(struct work_struct *work);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
int init_se_kmem_caches(void)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
|
|
|
se_sess_cache = kmem_cache_create("se_sess_cache",
|
|
|
|
sizeof(struct se_session), __alignof__(struct se_session),
|
|
|
|
0, NULL);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!se_sess_cache) {
|
|
|
|
pr_err("kmem_cache_create() for struct se_session"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" failed\n");
|
2012-01-19 21:39:17 +00:00
|
|
|
goto out;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
se_ua_cache = kmem_cache_create("se_ua_cache",
|
|
|
|
sizeof(struct se_ua), __alignof__(struct se_ua),
|
|
|
|
0, NULL);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!se_ua_cache) {
|
|
|
|
pr_err("kmem_cache_create() for struct se_ua failed\n");
|
2011-10-17 17:56:53 +00:00
|
|
|
goto out_free_sess_cache;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
t10_pr_reg_cache = kmem_cache_create("t10_pr_reg_cache",
|
|
|
|
sizeof(struct t10_pr_registration),
|
|
|
|
__alignof__(struct t10_pr_registration), 0, NULL);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!t10_pr_reg_cache) {
|
|
|
|
pr_err("kmem_cache_create() for struct t10_pr_registration"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" failed\n");
|
2011-10-17 17:56:53 +00:00
|
|
|
goto out_free_ua_cache;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
t10_alua_lu_gp_cache = kmem_cache_create("t10_alua_lu_gp_cache",
|
|
|
|
sizeof(struct t10_alua_lu_gp), __alignof__(struct t10_alua_lu_gp),
|
|
|
|
0, NULL);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!t10_alua_lu_gp_cache) {
|
|
|
|
pr_err("kmem_cache_create() for t10_alua_lu_gp_cache"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" failed\n");
|
2011-10-17 17:56:53 +00:00
|
|
|
goto out_free_pr_reg_cache;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
t10_alua_lu_gp_mem_cache = kmem_cache_create("t10_alua_lu_gp_mem_cache",
|
|
|
|
sizeof(struct t10_alua_lu_gp_member),
|
|
|
|
__alignof__(struct t10_alua_lu_gp_member), 0, NULL);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!t10_alua_lu_gp_mem_cache) {
|
|
|
|
pr_err("kmem_cache_create() for t10_alua_lu_gp_mem_"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
"cache failed\n");
|
2011-10-17 17:56:53 +00:00
|
|
|
goto out_free_lu_gp_cache;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
t10_alua_tg_pt_gp_cache = kmem_cache_create("t10_alua_tg_pt_gp_cache",
|
|
|
|
sizeof(struct t10_alua_tg_pt_gp),
|
|
|
|
__alignof__(struct t10_alua_tg_pt_gp), 0, NULL);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!t10_alua_tg_pt_gp_cache) {
|
|
|
|
pr_err("kmem_cache_create() for t10_alua_tg_pt_gp_"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
"cache failed\n");
|
2011-10-17 17:56:53 +00:00
|
|
|
goto out_free_lu_gp_mem_cache;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
t10_alua_tg_pt_gp_mem_cache = kmem_cache_create(
|
|
|
|
"t10_alua_tg_pt_gp_mem_cache",
|
|
|
|
sizeof(struct t10_alua_tg_pt_gp_member),
|
|
|
|
__alignof__(struct t10_alua_tg_pt_gp_member),
|
|
|
|
0, NULL);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!t10_alua_tg_pt_gp_mem_cache) {
|
|
|
|
pr_err("kmem_cache_create() for t10_alua_tg_pt_gp_"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
"mem_t failed\n");
|
2011-10-17 17:56:53 +00:00
|
|
|
goto out_free_tg_pt_gp_cache;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2011-10-17 17:56:53 +00:00
|
|
|
target_completion_wq = alloc_workqueue("target_completion",
|
|
|
|
WQ_MEM_RECLAIM, 0);
|
|
|
|
if (!target_completion_wq)
|
|
|
|
goto out_free_tg_pt_gp_mem_cache;
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return 0;
|
2011-10-17 17:56:53 +00:00
|
|
|
|
|
|
|
out_free_tg_pt_gp_mem_cache:
|
|
|
|
kmem_cache_destroy(t10_alua_tg_pt_gp_mem_cache);
|
|
|
|
out_free_tg_pt_gp_cache:
|
|
|
|
kmem_cache_destroy(t10_alua_tg_pt_gp_cache);
|
|
|
|
out_free_lu_gp_mem_cache:
|
|
|
|
kmem_cache_destroy(t10_alua_lu_gp_mem_cache);
|
|
|
|
out_free_lu_gp_cache:
|
|
|
|
kmem_cache_destroy(t10_alua_lu_gp_cache);
|
|
|
|
out_free_pr_reg_cache:
|
|
|
|
kmem_cache_destroy(t10_pr_reg_cache);
|
|
|
|
out_free_ua_cache:
|
|
|
|
kmem_cache_destroy(se_ua_cache);
|
|
|
|
out_free_sess_cache:
|
|
|
|
kmem_cache_destroy(se_sess_cache);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
out:
|
2011-07-19 08:55:10 +00:00
|
|
|
return -ENOMEM;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
void release_se_kmem_caches(void)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2011-10-17 17:56:53 +00:00
|
|
|
destroy_workqueue(target_completion_wq);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
kmem_cache_destroy(se_sess_cache);
|
|
|
|
kmem_cache_destroy(se_ua_cache);
|
|
|
|
kmem_cache_destroy(t10_pr_reg_cache);
|
|
|
|
kmem_cache_destroy(t10_alua_lu_gp_cache);
|
|
|
|
kmem_cache_destroy(t10_alua_lu_gp_mem_cache);
|
|
|
|
kmem_cache_destroy(t10_alua_tg_pt_gp_cache);
|
|
|
|
kmem_cache_destroy(t10_alua_tg_pt_gp_mem_cache);
|
|
|
|
}
|
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
/* This code ensures unique mib indexes are handed out. */
|
|
|
|
static DEFINE_SPINLOCK(scsi_mib_index_lock);
|
|
|
|
static u32 scsi_mib_index[SCSI_INDEX_TYPE_MAX];
|
2011-02-09 23:35:03 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate a new row index for the entry type specified
|
|
|
|
*/
|
|
|
|
u32 scsi_get_new_index(scsi_index_t type)
|
|
|
|
{
|
|
|
|
u32 new_index;
|
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
BUG_ON((type < 0) || (type >= SCSI_INDEX_TYPE_MAX));
|
2011-02-09 23:35:03 +00:00
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
spin_lock(&scsi_mib_index_lock);
|
|
|
|
new_index = ++scsi_mib_index[type];
|
|
|
|
spin_unlock(&scsi_mib_index_lock);
|
2011-02-09 23:35:03 +00:00
|
|
|
|
|
|
|
return new_index;
|
|
|
|
}
|
|
|
|
|
2011-10-22 08:03:54 +00:00
|
|
|
void transport_subsystem_check_init(void)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
|
|
|
int ret;
|
2012-07-30 22:54:17 +00:00
|
|
|
static int sub_api_initialized;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-10-22 08:03:54 +00:00
|
|
|
if (sub_api_initialized)
|
|
|
|
return;
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
ret = request_module("target_core_iblock");
|
|
|
|
if (ret != 0)
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_err("Unable to load target_core_iblock\n");
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
ret = request_module("target_core_file");
|
|
|
|
if (ret != 0)
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_err("Unable to load target_core_file\n");
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
ret = request_module("target_core_pscsi");
|
|
|
|
if (ret != 0)
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_err("Unable to load target_core_pscsi\n");
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
sub_api_initialized = 1;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
struct se_session *transport_init_session(void)
|
|
|
|
{
|
|
|
|
struct se_session *se_sess;
|
|
|
|
|
|
|
|
se_sess = kmem_cache_zalloc(se_sess_cache, GFP_KERNEL);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!se_sess) {
|
|
|
|
pr_err("Unable to allocate struct se_session from"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" se_sess_cache\n");
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
}
|
|
|
|
INIT_LIST_HEAD(&se_sess->sess_list);
|
|
|
|
INIT_LIST_HEAD(&se_sess->sess_acl_list);
|
2011-11-03 04:52:08 +00:00
|
|
|
INIT_LIST_HEAD(&se_sess->sess_cmd_list);
|
2013-05-15 07:52:44 +00:00
|
|
|
INIT_LIST_HEAD(&se_sess->sess_wait_list);
|
2011-11-03 04:52:08 +00:00
|
|
|
spin_lock_init(&se_sess->sess_cmd_lock);
|
2012-02-27 06:22:10 +00:00
|
|
|
kref_init(&se_sess->sess_kref);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
return se_sess;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_init_session);
|
|
|
|
|
2013-06-08 00:38:58 +00:00
|
|
|
int transport_alloc_session_tags(struct se_session *se_sess,
|
|
|
|
unsigned int tag_num, unsigned int tag_size)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
2013-09-23 18:57:38 +00:00
|
|
|
se_sess->sess_cmd_map = kzalloc(tag_num * tag_size,
|
|
|
|
GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT);
|
2013-06-08 00:38:58 +00:00
|
|
|
if (!se_sess->sess_cmd_map) {
|
2013-09-23 18:57:38 +00:00
|
|
|
se_sess->sess_cmd_map = vzalloc(tag_num * tag_size);
|
|
|
|
if (!se_sess->sess_cmd_map) {
|
|
|
|
pr_err("Unable to allocate se_sess->sess_cmd_map\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
2013-06-08 00:38:58 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
rc = percpu_ida_init(&se_sess->sess_tag_pool, tag_num);
|
|
|
|
if (rc < 0) {
|
|
|
|
pr_err("Unable to init se_sess->sess_tag_pool,"
|
|
|
|
" tag_num: %u\n", tag_num);
|
2013-09-23 18:57:38 +00:00
|
|
|
if (is_vmalloc_addr(se_sess->sess_cmd_map))
|
|
|
|
vfree(se_sess->sess_cmd_map);
|
|
|
|
else
|
|
|
|
kfree(se_sess->sess_cmd_map);
|
2013-06-08 00:38:58 +00:00
|
|
|
se_sess->sess_cmd_map = NULL;
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_alloc_session_tags);
|
|
|
|
|
|
|
|
struct se_session *transport_init_session_tags(unsigned int tag_num,
|
|
|
|
unsigned int tag_size)
|
|
|
|
{
|
|
|
|
struct se_session *se_sess;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
se_sess = transport_init_session();
|
|
|
|
if (IS_ERR(se_sess))
|
|
|
|
return se_sess;
|
|
|
|
|
|
|
|
rc = transport_alloc_session_tags(se_sess, tag_num, tag_size);
|
|
|
|
if (rc < 0) {
|
|
|
|
transport_free_session(se_sess);
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
return se_sess;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_init_session_tags);
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
2011-08-31 19:34:39 +00:00
|
|
|
* Called with spin_lock_irqsave(&struct se_portal_group->session_lock called.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
|
|
|
void __transport_register_session(
|
|
|
|
struct se_portal_group *se_tpg,
|
|
|
|
struct se_node_acl *se_nacl,
|
|
|
|
struct se_session *se_sess,
|
|
|
|
void *fabric_sess_ptr)
|
|
|
|
{
|
|
|
|
unsigned char buf[PR_REG_ISID_LEN];
|
|
|
|
|
|
|
|
se_sess->se_tpg = se_tpg;
|
|
|
|
se_sess->fabric_sess_ptr = fabric_sess_ptr;
|
|
|
|
/*
|
|
|
|
* Used by struct se_node_acl's under ConfigFS to locate active se_session-t
|
|
|
|
*
|
|
|
|
* Only set for struct se_session's that will actually be moving I/O.
|
|
|
|
* eg: *NOT* discovery sessions.
|
|
|
|
*/
|
|
|
|
if (se_nacl) {
|
|
|
|
/*
|
|
|
|
* If the fabric module supports an ISID based TransportID,
|
|
|
|
* save this value in binary from the fabric I_T Nexus now.
|
|
|
|
*/
|
2011-07-19 08:55:10 +00:00
|
|
|
if (se_tpg->se_tpg_tfo->sess_get_initiator_sid != NULL) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
memset(&buf[0], 0, PR_REG_ISID_LEN);
|
2011-07-19 08:55:10 +00:00
|
|
|
se_tpg->se_tpg_tfo->sess_get_initiator_sid(se_sess,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
&buf[0], PR_REG_ISID_LEN);
|
|
|
|
se_sess->sess_bin_isid = get_unaligned_be64(&buf[0]);
|
|
|
|
}
|
2012-03-09 07:45:02 +00:00
|
|
|
kref_get(&se_nacl->acl_kref);
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
spin_lock_irq(&se_nacl->nacl_sess_lock);
|
|
|
|
/*
|
|
|
|
* The se_nacl->nacl_sess pointer will be set to the
|
|
|
|
* last active I_T Nexus for each struct se_node_acl.
|
|
|
|
*/
|
|
|
|
se_nacl->nacl_sess = se_sess;
|
|
|
|
|
|
|
|
list_add_tail(&se_sess->sess_acl_list,
|
|
|
|
&se_nacl->acl_sess_list);
|
|
|
|
spin_unlock_irq(&se_nacl->nacl_sess_lock);
|
|
|
|
}
|
|
|
|
list_add_tail(&se_sess->sess_list, &se_tpg->tpg_sess_list);
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("TARGET_CORE[%s]: Registered fabric_sess_ptr: %p\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
se_tpg->se_tpg_tfo->get_fabric_name(), se_sess->fabric_sess_ptr);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(__transport_register_session);
|
|
|
|
|
|
|
|
void transport_register_session(
|
|
|
|
struct se_portal_group *se_tpg,
|
|
|
|
struct se_node_acl *se_nacl,
|
|
|
|
struct se_session *se_sess,
|
|
|
|
void *fabric_sess_ptr)
|
|
|
|
{
|
2011-08-31 19:34:39 +00:00
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&se_tpg->session_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
__transport_register_session(se_tpg, se_nacl, se_sess, fabric_sess_ptr);
|
2011-08-31 19:34:39 +00:00
|
|
|
spin_unlock_irqrestore(&se_tpg->session_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_register_session);
|
|
|
|
|
2012-10-09 23:30:20 +00:00
|
|
|
static void target_release_session(struct kref *kref)
|
2012-02-27 06:22:10 +00:00
|
|
|
{
|
|
|
|
struct se_session *se_sess = container_of(kref,
|
|
|
|
struct se_session, sess_kref);
|
|
|
|
struct se_portal_group *se_tpg = se_sess->se_tpg;
|
|
|
|
|
|
|
|
se_tpg->se_tpg_tfo->close_session(se_sess);
|
|
|
|
}
|
|
|
|
|
|
|
|
void target_get_session(struct se_session *se_sess)
|
|
|
|
{
|
|
|
|
kref_get(&se_sess->sess_kref);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(target_get_session);
|
|
|
|
|
2012-05-11 14:35:08 +00:00
|
|
|
void target_put_session(struct se_session *se_sess)
|
2012-02-27 06:22:10 +00:00
|
|
|
{
|
2012-05-18 20:57:19 +00:00
|
|
|
struct se_portal_group *tpg = se_sess->se_tpg;
|
|
|
|
|
|
|
|
if (tpg->se_tpg_tfo->put_session != NULL) {
|
|
|
|
tpg->se_tpg_tfo->put_session(se_sess);
|
|
|
|
return;
|
|
|
|
}
|
2012-05-11 14:35:08 +00:00
|
|
|
kref_put(&se_sess->sess_kref, target_release_session);
|
2012-02-27 06:22:10 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(target_put_session);
|
|
|
|
|
2012-03-09 07:45:02 +00:00
|
|
|
static void target_complete_nacl(struct kref *kref)
|
|
|
|
{
|
|
|
|
struct se_node_acl *nacl = container_of(kref,
|
|
|
|
struct se_node_acl, acl_kref);
|
|
|
|
|
|
|
|
complete(&nacl->acl_free_comp);
|
|
|
|
}
|
|
|
|
|
|
|
|
void target_put_nacl(struct se_node_acl *nacl)
|
|
|
|
{
|
|
|
|
kref_put(&nacl->acl_kref, target_complete_nacl);
|
|
|
|
}
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
void transport_deregister_session_configfs(struct se_session *se_sess)
|
|
|
|
{
|
|
|
|
struct se_node_acl *se_nacl;
|
2011-06-22 08:02:21 +00:00
|
|
|
unsigned long flags;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* Used by struct se_node_acl's under ConfigFS to locate active struct se_session
|
|
|
|
*/
|
|
|
|
se_nacl = se_sess->se_node_acl;
|
2011-06-08 17:36:43 +00:00
|
|
|
if (se_nacl) {
|
2011-06-22 08:02:21 +00:00
|
|
|
spin_lock_irqsave(&se_nacl->nacl_sess_lock, flags);
|
2012-03-10 22:36:21 +00:00
|
|
|
if (se_nacl->acl_stop == 0)
|
|
|
|
list_del(&se_sess->sess_acl_list);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* If the session list is empty, then clear the pointer.
|
|
|
|
* Otherwise, set the struct se_session pointer from the tail
|
|
|
|
* element of the per struct se_node_acl active session list.
|
|
|
|
*/
|
|
|
|
if (list_empty(&se_nacl->acl_sess_list))
|
|
|
|
se_nacl->nacl_sess = NULL;
|
|
|
|
else {
|
|
|
|
se_nacl->nacl_sess = container_of(
|
|
|
|
se_nacl->acl_sess_list.prev,
|
|
|
|
struct se_session, sess_acl_list);
|
|
|
|
}
|
2011-06-22 08:02:21 +00:00
|
|
|
spin_unlock_irqrestore(&se_nacl->nacl_sess_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_deregister_session_configfs);
|
|
|
|
|
|
|
|
void transport_free_session(struct se_session *se_sess)
|
|
|
|
{
|
2013-06-08 00:38:58 +00:00
|
|
|
if (se_sess->sess_cmd_map) {
|
|
|
|
percpu_ida_destroy(&se_sess->sess_tag_pool);
|
2013-09-23 18:57:38 +00:00
|
|
|
if (is_vmalloc_addr(se_sess->sess_cmd_map))
|
|
|
|
vfree(se_sess->sess_cmd_map);
|
|
|
|
else
|
|
|
|
kfree(se_sess->sess_cmd_map);
|
2013-06-08 00:38:58 +00:00
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
kmem_cache_free(se_sess_cache, se_sess);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_free_session);
|
|
|
|
|
|
|
|
void transport_deregister_session(struct se_session *se_sess)
|
|
|
|
{
|
|
|
|
struct se_portal_group *se_tpg = se_sess->se_tpg;
|
2012-03-10 22:32:52 +00:00
|
|
|
struct target_core_fabric_ops *se_tfo;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
struct se_node_acl *se_nacl;
|
2011-08-12 23:01:02 +00:00
|
|
|
unsigned long flags;
|
2012-03-10 22:32:52 +00:00
|
|
|
bool comp_nacl = true;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!se_tpg) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
transport_free_session(se_sess);
|
|
|
|
return;
|
|
|
|
}
|
2012-03-10 22:32:52 +00:00
|
|
|
se_tfo = se_tpg->se_tpg_tfo;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-08-12 23:01:02 +00:00
|
|
|
spin_lock_irqsave(&se_tpg->session_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
list_del(&se_sess->sess_list);
|
|
|
|
se_sess->se_tpg = NULL;
|
|
|
|
se_sess->fabric_sess_ptr = NULL;
|
2011-08-12 23:01:02 +00:00
|
|
|
spin_unlock_irqrestore(&se_tpg->session_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine if we need to do extra work for this initiator node's
|
|
|
|
* struct se_node_acl if it had been previously dynamically generated.
|
|
|
|
*/
|
|
|
|
se_nacl = se_sess->se_node_acl;
|
2012-03-10 22:32:52 +00:00
|
|
|
|
|
|
|
spin_lock_irqsave(&se_tpg->acl_node_lock, flags);
|
|
|
|
if (se_nacl && se_nacl->dynamic_node_acl) {
|
|
|
|
if (!se_tfo->tpg_check_demo_mode_cache(se_tpg)) {
|
|
|
|
list_del(&se_nacl->acl_list);
|
|
|
|
se_tpg->num_node_acls--;
|
|
|
|
spin_unlock_irqrestore(&se_tpg->acl_node_lock, flags);
|
|
|
|
core_tpg_wait_for_nacl_pr_ref(se_nacl);
|
|
|
|
core_free_device_list_for_node(se_nacl, se_tpg);
|
|
|
|
se_tfo->tpg_release_fabric_acl(se_tpg, se_nacl);
|
|
|
|
|
|
|
|
comp_nacl = false;
|
|
|
|
spin_lock_irqsave(&se_tpg->acl_node_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
}
|
2012-03-10 22:32:52 +00:00
|
|
|
spin_unlock_irqrestore(&se_tpg->acl_node_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("TARGET_CORE[%s]: Deregistered fabric_sess\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
se_tpg->se_tpg_tfo->get_fabric_name());
|
2012-03-10 22:32:52 +00:00
|
|
|
/*
|
2012-03-09 07:45:02 +00:00
|
|
|
* If last kref is dropping now for an explict NodeACL, awake sleeping
|
|
|
|
* ->acl_free_comp caller to wakeup configfs se_node_acl->acl_group
|
|
|
|
* removal context.
|
2012-03-10 22:32:52 +00:00
|
|
|
*/
|
|
|
|
if (se_nacl && comp_nacl == true)
|
2012-03-09 07:45:02 +00:00
|
|
|
target_put_nacl(se_nacl);
|
2012-03-10 22:32:52 +00:00
|
|
|
|
2012-03-09 07:45:02 +00:00
|
|
|
transport_free_session(se_sess);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_deregister_session);
|
|
|
|
|
|
|
|
/*
|
2011-05-03 00:12:10 +00:00
|
|
|
* Called with cmd->t_state_lock held.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2012-04-24 04:25:05 +00:00
|
|
|
static void target_remove_from_state_list(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2011-10-12 15:07:00 +00:00
|
|
|
struct se_device *dev = cmd->se_dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
unsigned long flags;
|
|
|
|
|
2011-10-12 15:07:00 +00:00
|
|
|
if (!dev)
|
|
|
|
return;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
if (cmd->transport_state & CMD_T_BUSY)
|
|
|
|
return;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
spin_lock_irqsave(&dev->execute_task_lock, flags);
|
|
|
|
if (cmd->state_active) {
|
|
|
|
list_del(&cmd->state_list);
|
|
|
|
cmd->state_active = false;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2012-04-24 04:25:05 +00:00
|
|
|
spin_unlock_irqrestore(&dev->execute_task_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2013-06-06 08:35:18 +00:00
|
|
|
static int transport_cmd_check_stop(struct se_cmd *cmd, bool remove_from_lists,
|
|
|
|
bool write_pending)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
2013-06-06 08:35:18 +00:00
|
|
|
if (write_pending)
|
|
|
|
cmd->t_state = TRANSPORT_WRITE_PENDING;
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* Determine if IOCTL context caller in requesting the stopping of this
|
|
|
|
* command for LUN shutdown purposes.
|
|
|
|
*/
|
2011-12-21 19:13:47 +00:00
|
|
|
if (cmd->transport_state & CMD_T_LUN_STOP) {
|
|
|
|
pr_debug("%s:%d CMD_T_LUN_STOP for ITT: 0x%08x\n",
|
|
|
|
__func__, __LINE__, cmd->se_tfo->get_task_tag(cmd));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state &= ~CMD_T_ACTIVE;
|
2012-07-08 19:58:38 +00:00
|
|
|
if (remove_from_lists)
|
2012-04-24 04:25:05 +00:00
|
|
|
target_remove_from_state_list(cmd);
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
complete(&cmd->transport_lun_stop_comp);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return 1;
|
|
|
|
}
|
2012-07-08 19:58:38 +00:00
|
|
|
|
|
|
|
if (remove_from_lists) {
|
|
|
|
target_remove_from_state_list(cmd);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Clear struct se_cmd->se_lun before the handoff to FE.
|
|
|
|
*/
|
|
|
|
cmd->se_lun = NULL;
|
|
|
|
}
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* Determine if frontend context caller is requesting the stopping of
|
2011-07-19 08:55:10 +00:00
|
|
|
* this command for frontend exceptions.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2011-12-21 19:13:47 +00:00
|
|
|
if (cmd->transport_state & CMD_T_STOP) {
|
|
|
|
pr_debug("%s:%d CMD_T_STOP for ITT: 0x%08x\n",
|
|
|
|
__func__, __LINE__,
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
complete(&cmd->t_transport_stop_comp);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return 1;
|
|
|
|
}
|
2012-07-08 19:58:38 +00:00
|
|
|
|
|
|
|
cmd->transport_state &= ~CMD_T_ACTIVE;
|
|
|
|
if (remove_from_lists) {
|
|
|
|
/*
|
|
|
|
* Some fabric modules like tcm_loop can release
|
|
|
|
* their internally allocated I/O reference now and
|
|
|
|
* struct se_cmd now.
|
|
|
|
*
|
|
|
|
* Fabric modules are expected to return '1' here if the
|
|
|
|
* se_cmd being passed is released at this point,
|
|
|
|
* or zero if not being released.
|
|
|
|
*/
|
|
|
|
if (cmd->se_tfo->check_stop_free != NULL) {
|
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
|
|
|
return cmd->se_tfo->check_stop_free(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2012-07-08 19:58:38 +00:00
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int transport_cmd_check_stop_to_fabric(struct se_cmd *cmd)
|
|
|
|
{
|
2013-06-06 08:35:18 +00:00
|
|
|
return transport_cmd_check_stop(cmd, true, false);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void transport_lun_remove_cmd(struct se_cmd *cmd)
|
|
|
|
{
|
2011-07-19 08:55:10 +00:00
|
|
|
struct se_lun *lun = cmd->se_lun;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
if (!lun)
|
|
|
|
return;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&lun->lun_cmd_lock, flags);
|
2011-12-21 19:14:05 +00:00
|
|
|
if (!list_empty(&cmd->se_lun_node))
|
|
|
|
list_del_init(&cmd->se_lun_node);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
spin_unlock_irqrestore(&lun->lun_cmd_lock, flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
|
|
|
|
{
|
|
|
|
if (transport_cmd_check_stop_to_fabric(cmd))
|
|
|
|
return;
|
2012-07-08 19:58:49 +00:00
|
|
|
if (remove)
|
2011-09-13 21:08:50 +00:00
|
|
|
transport_put_cmd(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2011-10-17 17:56:53 +00:00
|
|
|
static void target_complete_failure_work(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct se_cmd *cmd = container_of(work, struct se_cmd, work);
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
transport_generic_request_failure(cmd,
|
|
|
|
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE);
|
2011-10-17 17:56:53 +00:00
|
|
|
}
|
|
|
|
|
2012-09-05 15:09:13 +00:00
|
|
|
/*
|
2012-09-05 15:09:15 +00:00
|
|
|
* Used when asking transport to copy Sense Data from the underlying
|
|
|
|
* Linux/SCSI struct scsi_cmnd
|
2012-09-05 15:09:13 +00:00
|
|
|
*/
|
2012-09-05 15:09:15 +00:00
|
|
|
static unsigned char *transport_get_sense_buffer(struct se_cmd *cmd)
|
2012-09-05 15:09:13 +00:00
|
|
|
{
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
|
|
|
|
WARN_ON(!cmd->se_lun);
|
|
|
|
|
|
|
|
if (!dev)
|
2012-09-05 15:09:15 +00:00
|
|
|
return NULL;
|
2012-09-05 15:09:13 +00:00
|
|
|
|
2012-09-05 15:09:15 +00:00
|
|
|
if (cmd->se_cmd_flags & SCF_SENT_CHECK_CONDITION)
|
|
|
|
return NULL;
|
2012-09-05 15:09:13 +00:00
|
|
|
|
2012-08-15 21:35:25 +00:00
|
|
|
cmd->scsi_sense_length = TRANSPORT_SENSE_BUFFER;
|
2012-09-05 15:09:13 +00:00
|
|
|
|
2012-09-05 15:09:15 +00:00
|
|
|
pr_debug("HBA_[%u]_PLUG[%s]: Requesting sense for SAM STATUS: 0x%02x\n",
|
2012-09-05 15:09:13 +00:00
|
|
|
dev->se_hba->hba_id, dev->transport->name, cmd->scsi_status);
|
2012-08-15 21:35:25 +00:00
|
|
|
return cmd->sense_buffer;
|
2012-09-05 15:09:13 +00:00
|
|
|
}
|
|
|
|
|
2012-04-24 04:25:06 +00:00
|
|
|
void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2011-10-12 15:07:00 +00:00
|
|
|
struct se_device *dev = cmd->se_dev;
|
2012-04-24 04:25:06 +00:00
|
|
|
int success = scsi_status == GOOD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
unsigned long flags;
|
|
|
|
|
2012-04-24 04:25:06 +00:00
|
|
|
cmd->scsi_status = scsi_status;
|
|
|
|
|
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
2012-04-24 04:25:05 +00:00
|
|
|
cmd->transport_state &= ~CMD_T_BUSY;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
if (dev && dev->transport->transport_complete) {
|
2012-09-05 15:09:15 +00:00
|
|
|
dev->transport->transport_complete(cmd,
|
|
|
|
cmd->t_data_sg,
|
|
|
|
transport_get_sense_buffer(cmd));
|
|
|
|
if (cmd->se_cmd_flags & SCF_TRANSPORT_TASK_SENSE)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
success = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2012-04-24 04:25:06 +00:00
|
|
|
* See if we are waiting to complete for an exception condition.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2012-04-24 04:25:05 +00:00
|
|
|
if (cmd->transport_state & CMD_T_REQUEST_STOP) {
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
2012-04-24 04:25:05 +00:00
|
|
|
complete(&cmd->task_stop_comp);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return;
|
|
|
|
}
|
2011-11-02 12:06:35 +00:00
|
|
|
|
|
|
|
if (!success)
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state |= CMD_T_FAILED;
|
2011-11-02 12:06:35 +00:00
|
|
|
|
2012-02-13 10:38:14 +00:00
|
|
|
/*
|
|
|
|
* Check for case where an explict ABORT_TASK has been received
|
|
|
|
* and transport_wait_for_tasks() will be waiting for completion..
|
|
|
|
*/
|
|
|
|
if (cmd->transport_state & CMD_T_ABORTED &&
|
|
|
|
cmd->transport_state & CMD_T_STOP) {
|
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
|
|
|
complete(&cmd->t_transport_stop_comp);
|
|
|
|
return;
|
|
|
|
} else if (cmd->transport_state & CMD_T_FAILED) {
|
2011-10-17 17:56:53 +00:00
|
|
|
INIT_WORK(&cmd->work, target_complete_failure_work);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
} else {
|
2011-10-17 17:56:53 +00:00
|
|
|
INIT_WORK(&cmd->work, target_complete_ok_work);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2011-10-17 17:56:53 +00:00
|
|
|
|
|
|
|
cmd->t_state = TRANSPORT_COMPLETE;
|
2012-02-13 10:38:14 +00:00
|
|
|
cmd->transport_state |= (CMD_T_COMPLETE | CMD_T_ACTIVE);
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-10-17 17:56:53 +00:00
|
|
|
queue_work(target_completion_wq, &cmd->work);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2012-04-23 15:35:33 +00:00
|
|
|
EXPORT_SYMBOL(target_complete_cmd);
|
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
static void target_add_to_state_list(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2012-04-24 04:25:05 +00:00
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
unsigned long flags;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
spin_lock_irqsave(&dev->execute_task_lock, flags);
|
|
|
|
if (!cmd->state_active) {
|
|
|
|
list_add_tail(&cmd->state_list, &dev->state_list);
|
|
|
|
cmd->state_active = true;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2012-04-24 04:25:05 +00:00
|
|
|
spin_unlock_irqrestore(&dev->execute_task_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2011-06-13 21:46:09 +00:00
|
|
|
/*
|
2011-10-26 06:57:41 +00:00
|
|
|
* Handle QUEUE_FULL / -EAGAIN and -ENOMEM status
|
2011-06-13 21:46:09 +00:00
|
|
|
*/
|
2012-07-08 19:58:47 +00:00
|
|
|
static void transport_write_pending_qf(struct se_cmd *cmd);
|
|
|
|
static void transport_complete_qf(struct se_cmd *cmd);
|
2011-06-13 21:46:09 +00:00
|
|
|
|
2012-10-08 04:03:19 +00:00
|
|
|
void target_qf_do_work(struct work_struct *work)
|
2011-06-13 21:46:09 +00:00
|
|
|
{
|
|
|
|
struct se_device *dev = container_of(work, struct se_device,
|
|
|
|
qf_work_queue);
|
2011-08-28 04:33:16 +00:00
|
|
|
LIST_HEAD(qf_cmd_list);
|
2011-06-13 21:46:09 +00:00
|
|
|
struct se_cmd *cmd, *cmd_tmp;
|
|
|
|
|
|
|
|
spin_lock_irq(&dev->qf_cmd_lock);
|
2011-08-28 04:33:16 +00:00
|
|
|
list_splice_init(&dev->qf_cmd_list, &qf_cmd_list);
|
|
|
|
spin_unlock_irq(&dev->qf_cmd_lock);
|
2011-06-13 21:46:09 +00:00
|
|
|
|
2011-08-28 04:33:16 +00:00
|
|
|
list_for_each_entry_safe(cmd, cmd_tmp, &qf_cmd_list, se_qf_node) {
|
2011-06-13 21:46:09 +00:00
|
|
|
list_del(&cmd->se_qf_node);
|
|
|
|
atomic_dec(&dev->dev_qf_count);
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("Processing %s cmd: %p QUEUE_FULL in work queue"
|
2011-06-13 21:46:09 +00:00
|
|
|
" context: %s\n", cmd->se_tfo->get_fabric_name(), cmd,
|
2011-10-17 17:56:41 +00:00
|
|
|
(cmd->t_state == TRANSPORT_COMPLETE_QF_OK) ? "COMPLETE_OK" :
|
2011-06-13 21:46:09 +00:00
|
|
|
(cmd->t_state == TRANSPORT_COMPLETE_QF_WP) ? "WRITE_PENDING"
|
|
|
|
: "UNKNOWN");
|
2011-10-17 17:56:42 +00:00
|
|
|
|
2012-07-08 19:58:47 +00:00
|
|
|
if (cmd->t_state == TRANSPORT_COMPLETE_QF_WP)
|
|
|
|
transport_write_pending_qf(cmd);
|
|
|
|
else if (cmd->t_state == TRANSPORT_COMPLETE_QF_OK)
|
|
|
|
transport_complete_qf(cmd);
|
2011-06-13 21:46:09 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
unsigned char *transport_dump_cmd_direction(struct se_cmd *cmd)
|
|
|
|
{
|
|
|
|
switch (cmd->data_direction) {
|
|
|
|
case DMA_NONE:
|
|
|
|
return "NONE";
|
|
|
|
case DMA_FROM_DEVICE:
|
|
|
|
return "READ";
|
|
|
|
case DMA_TO_DEVICE:
|
|
|
|
return "WRITE";
|
|
|
|
case DMA_BIDIRECTIONAL:
|
|
|
|
return "BIDI";
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return "UNKNOWN";
|
|
|
|
}
|
|
|
|
|
|
|
|
void transport_dump_dev_state(
|
|
|
|
struct se_device *dev,
|
|
|
|
char *b,
|
|
|
|
int *bl)
|
|
|
|
{
|
|
|
|
*bl += sprintf(b + *bl, "Status: ");
|
2012-10-08 04:03:19 +00:00
|
|
|
if (dev->export_count)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*bl += sprintf(b + *bl, "ACTIVATED");
|
2012-10-08 04:03:19 +00:00
|
|
|
else
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*bl += sprintf(b + *bl, "DEACTIVATED");
|
|
|
|
|
2012-05-20 18:34:44 +00:00
|
|
|
*bl += sprintf(b + *bl, " Max Queue Depth: %d", dev->queue_depth);
|
2012-05-09 19:42:09 +00:00
|
|
|
*bl += sprintf(b + *bl, " SectorSize: %u HwMaxSectors: %u\n",
|
2012-10-08 04:03:19 +00:00
|
|
|
dev->dev_attrib.block_size,
|
|
|
|
dev->dev_attrib.hw_max_sectors);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*bl += sprintf(b + *bl, " ");
|
|
|
|
}
|
|
|
|
|
|
|
|
void transport_dump_vpd_proto_id(
|
|
|
|
struct t10_vpd *vpd,
|
|
|
|
unsigned char *p_buf,
|
|
|
|
int p_buf_len)
|
|
|
|
{
|
|
|
|
unsigned char buf[VPD_TMP_BUF_SIZE];
|
|
|
|
int len;
|
|
|
|
|
|
|
|
memset(buf, 0, VPD_TMP_BUF_SIZE);
|
|
|
|
len = sprintf(buf, "T10 VPD Protocol Identifier: ");
|
|
|
|
|
|
|
|
switch (vpd->protocol_identifier) {
|
|
|
|
case 0x00:
|
|
|
|
sprintf(buf+len, "Fibre Channel\n");
|
|
|
|
break;
|
|
|
|
case 0x10:
|
|
|
|
sprintf(buf+len, "Parallel SCSI\n");
|
|
|
|
break;
|
|
|
|
case 0x20:
|
|
|
|
sprintf(buf+len, "SSA\n");
|
|
|
|
break;
|
|
|
|
case 0x30:
|
|
|
|
sprintf(buf+len, "IEEE 1394\n");
|
|
|
|
break;
|
|
|
|
case 0x40:
|
|
|
|
sprintf(buf+len, "SCSI Remote Direct Memory Access"
|
|
|
|
" Protocol\n");
|
|
|
|
break;
|
|
|
|
case 0x50:
|
|
|
|
sprintf(buf+len, "Internet SCSI (iSCSI)\n");
|
|
|
|
break;
|
|
|
|
case 0x60:
|
|
|
|
sprintf(buf+len, "SAS Serial SCSI Protocol\n");
|
|
|
|
break;
|
|
|
|
case 0x70:
|
|
|
|
sprintf(buf+len, "Automation/Drive Interface Transport"
|
|
|
|
" Protocol\n");
|
|
|
|
break;
|
|
|
|
case 0x80:
|
|
|
|
sprintf(buf+len, "AT Attachment Interface ATA/ATAPI\n");
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
sprintf(buf+len, "Unknown 0x%02x\n",
|
|
|
|
vpd->protocol_identifier);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p_buf)
|
|
|
|
strncpy(p_buf, buf, p_buf_len);
|
|
|
|
else
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("%s", buf);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
transport_set_vpd_proto_id(struct t10_vpd *vpd, unsigned char *page_83)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* Check if the Protocol Identifier Valid (PIV) bit is set..
|
|
|
|
*
|
|
|
|
* from spc3r23.pdf section 7.5.1
|
|
|
|
*/
|
|
|
|
if (page_83[1] & 0x80) {
|
|
|
|
vpd->protocol_identifier = (page_83[0] & 0xf0);
|
|
|
|
vpd->protocol_identifier_set = 1;
|
|
|
|
transport_dump_vpd_proto_id(vpd, NULL, 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_set_vpd_proto_id);
|
|
|
|
|
|
|
|
int transport_dump_vpd_assoc(
|
|
|
|
struct t10_vpd *vpd,
|
|
|
|
unsigned char *p_buf,
|
|
|
|
int p_buf_len)
|
|
|
|
{
|
|
|
|
unsigned char buf[VPD_TMP_BUF_SIZE];
|
2011-07-19 08:55:10 +00:00
|
|
|
int ret = 0;
|
|
|
|
int len;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
memset(buf, 0, VPD_TMP_BUF_SIZE);
|
|
|
|
len = sprintf(buf, "T10 VPD Identifier Association: ");
|
|
|
|
|
|
|
|
switch (vpd->association) {
|
|
|
|
case 0x00:
|
|
|
|
sprintf(buf+len, "addressed logical unit\n");
|
|
|
|
break;
|
|
|
|
case 0x10:
|
|
|
|
sprintf(buf+len, "target port\n");
|
|
|
|
break;
|
|
|
|
case 0x20:
|
|
|
|
sprintf(buf+len, "SCSI target device\n");
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
sprintf(buf+len, "Unknown 0x%02x\n", vpd->association);
|
2011-07-19 08:55:10 +00:00
|
|
|
ret = -EINVAL;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p_buf)
|
|
|
|
strncpy(p_buf, buf, p_buf_len);
|
|
|
|
else
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("%s", buf);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
int transport_set_vpd_assoc(struct t10_vpd *vpd, unsigned char *page_83)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* The VPD identification association..
|
|
|
|
*
|
|
|
|
* from spc3r23.pdf Section 7.6.3.1 Table 297
|
|
|
|
*/
|
|
|
|
vpd->association = (page_83[1] & 0x30);
|
|
|
|
return transport_dump_vpd_assoc(vpd, NULL, 0);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_set_vpd_assoc);
|
|
|
|
|
|
|
|
int transport_dump_vpd_ident_type(
|
|
|
|
struct t10_vpd *vpd,
|
|
|
|
unsigned char *p_buf,
|
|
|
|
int p_buf_len)
|
|
|
|
{
|
|
|
|
unsigned char buf[VPD_TMP_BUF_SIZE];
|
2011-07-19 08:55:10 +00:00
|
|
|
int ret = 0;
|
|
|
|
int len;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
memset(buf, 0, VPD_TMP_BUF_SIZE);
|
|
|
|
len = sprintf(buf, "T10 VPD Identifier Type: ");
|
|
|
|
|
|
|
|
switch (vpd->device_identifier_type) {
|
|
|
|
case 0x00:
|
|
|
|
sprintf(buf+len, "Vendor specific\n");
|
|
|
|
break;
|
|
|
|
case 0x01:
|
|
|
|
sprintf(buf+len, "T10 Vendor ID based\n");
|
|
|
|
break;
|
|
|
|
case 0x02:
|
|
|
|
sprintf(buf+len, "EUI-64 based\n");
|
|
|
|
break;
|
|
|
|
case 0x03:
|
|
|
|
sprintf(buf+len, "NAA\n");
|
|
|
|
break;
|
|
|
|
case 0x04:
|
|
|
|
sprintf(buf+len, "Relative target port identifier\n");
|
|
|
|
break;
|
|
|
|
case 0x08:
|
|
|
|
sprintf(buf+len, "SCSI name string\n");
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
sprintf(buf+len, "Unsupported: 0x%02x\n",
|
|
|
|
vpd->device_identifier_type);
|
2011-07-19 08:55:10 +00:00
|
|
|
ret = -EINVAL;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
if (p_buf) {
|
|
|
|
if (p_buf_len < strlen(buf)+1)
|
|
|
|
return -EINVAL;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
strncpy(p_buf, buf, p_buf_len);
|
2011-07-19 08:55:10 +00:00
|
|
|
} else {
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("%s", buf);
|
2011-07-19 08:55:10 +00:00
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
int transport_set_vpd_ident_type(struct t10_vpd *vpd, unsigned char *page_83)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* The VPD identifier type..
|
|
|
|
*
|
|
|
|
* from spc3r23.pdf Section 7.6.3.1 Table 298
|
|
|
|
*/
|
|
|
|
vpd->device_identifier_type = (page_83[1] & 0x0f);
|
|
|
|
return transport_dump_vpd_ident_type(vpd, NULL, 0);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_set_vpd_ident_type);
|
|
|
|
|
|
|
|
int transport_dump_vpd_ident(
|
|
|
|
struct t10_vpd *vpd,
|
|
|
|
unsigned char *p_buf,
|
|
|
|
int p_buf_len)
|
|
|
|
{
|
|
|
|
unsigned char buf[VPD_TMP_BUF_SIZE];
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
memset(buf, 0, VPD_TMP_BUF_SIZE);
|
|
|
|
|
|
|
|
switch (vpd->device_identifier_code_set) {
|
|
|
|
case 0x01: /* Binary */
|
2013-01-18 13:05:12 +00:00
|
|
|
snprintf(buf, sizeof(buf),
|
|
|
|
"T10 VPD Binary Device Identifier: %s\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
&vpd->device_identifier[0]);
|
|
|
|
break;
|
|
|
|
case 0x02: /* ASCII */
|
2013-01-18 13:05:12 +00:00
|
|
|
snprintf(buf, sizeof(buf),
|
|
|
|
"T10 VPD ASCII Device Identifier: %s\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
&vpd->device_identifier[0]);
|
|
|
|
break;
|
|
|
|
case 0x03: /* UTF-8 */
|
2013-01-18 13:05:12 +00:00
|
|
|
snprintf(buf, sizeof(buf),
|
|
|
|
"T10 VPD UTF-8 Device Identifier: %s\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
&vpd->device_identifier[0]);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
sprintf(buf, "T10 VPD Device Identifier encoding unsupported:"
|
|
|
|
" 0x%02x", vpd->device_identifier_code_set);
|
2011-07-19 08:55:10 +00:00
|
|
|
ret = -EINVAL;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p_buf)
|
|
|
|
strncpy(p_buf, buf, p_buf_len);
|
|
|
|
else
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("%s", buf);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
transport_set_vpd_ident(struct t10_vpd *vpd, unsigned char *page_83)
|
|
|
|
{
|
|
|
|
static const char hex_str[] = "0123456789abcdef";
|
2012-08-16 13:43:13 +00:00
|
|
|
int j = 0, i = 4; /* offset to start of the identifier */
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* The VPD Code Set (encoding)
|
|
|
|
*
|
|
|
|
* from spc3r23.pdf Section 7.6.3.1 Table 296
|
|
|
|
*/
|
|
|
|
vpd->device_identifier_code_set = (page_83[0] & 0x0f);
|
|
|
|
switch (vpd->device_identifier_code_set) {
|
|
|
|
case 0x01: /* Binary */
|
|
|
|
vpd->device_identifier[j++] =
|
|
|
|
hex_str[vpd->device_identifier_type];
|
|
|
|
while (i < (4 + page_83[3])) {
|
|
|
|
vpd->device_identifier[j++] =
|
|
|
|
hex_str[(page_83[i] & 0xf0) >> 4];
|
|
|
|
vpd->device_identifier[j++] =
|
|
|
|
hex_str[page_83[i] & 0x0f];
|
|
|
|
i++;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 0x02: /* ASCII */
|
|
|
|
case 0x03: /* UTF-8 */
|
|
|
|
while (i < (4 + page_83[3]))
|
|
|
|
vpd->device_identifier[j++] = page_83[i++];
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return transport_dump_vpd_ident(vpd, NULL, 0);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_set_vpd_ident);
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
sense_reason_t
|
|
|
|
target_cmd_size_check(struct se_cmd *cmd, unsigned int size)
|
2012-05-20 15:59:12 +00:00
|
|
|
{
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
|
|
|
|
if (cmd->unknown_data_length) {
|
|
|
|
cmd->data_length = size;
|
|
|
|
} else if (size != cmd->data_length) {
|
|
|
|
pr_warn("TARGET_CORE[%s]: Expected Transfer Length:"
|
|
|
|
" %u does not match SCSI CDB Length: %u for SAM Opcode:"
|
|
|
|
" 0x%02x\n", cmd->se_tfo->get_fabric_name(),
|
|
|
|
cmd->data_length, size, cmd->t_task_cdb[0]);
|
|
|
|
|
|
|
|
if (cmd->data_direction == DMA_TO_DEVICE) {
|
|
|
|
pr_err("Rejecting underflow/overflow"
|
|
|
|
" WRITE data\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
return TCM_INVALID_CDB_FIELD;
|
2012-05-20 15:59:12 +00:00
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Reject READ_* or WRITE_* with overflow/underflow for
|
|
|
|
* type SCF_SCSI_DATA_CDB.
|
|
|
|
*/
|
2012-10-08 04:03:19 +00:00
|
|
|
if (dev->dev_attrib.block_size != 512) {
|
2012-05-20 15:59:12 +00:00
|
|
|
pr_err("Failing OVERFLOW/UNDERFLOW for LBA op"
|
|
|
|
" CDB on non 512-byte sector setup subsystem"
|
|
|
|
" plugin: %s\n", dev->transport->name);
|
|
|
|
/* Returns CHECK_CONDITION + INVALID_CDB_FIELD */
|
2012-11-06 20:24:09 +00:00
|
|
|
return TCM_INVALID_CDB_FIELD;
|
2012-05-20 15:59:12 +00:00
|
|
|
}
|
2012-08-16 22:33:10 +00:00
|
|
|
/*
|
|
|
|
* For the overflow case keep the existing fabric provided
|
|
|
|
* ->data_length. Otherwise for the underflow case, reset
|
|
|
|
* ->data_length to the smaller SCSI expected data transfer
|
|
|
|
* length.
|
|
|
|
*/
|
2012-05-20 15:59:12 +00:00
|
|
|
if (size > cmd->data_length) {
|
|
|
|
cmd->se_cmd_flags |= SCF_OVERFLOW_BIT;
|
|
|
|
cmd->residual_count = (size - cmd->data_length);
|
|
|
|
} else {
|
|
|
|
cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
|
|
|
|
cmd->residual_count = (cmd->data_length - size);
|
2012-08-16 22:33:10 +00:00
|
|
|
cmd->data_length = size;
|
2012-05-20 15:59:12 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* Used by fabric modules containing a local struct se_cmd within their
|
|
|
|
* fabric dependent per I/O descriptor.
|
|
|
|
*/
|
|
|
|
void transport_init_se_cmd(
|
|
|
|
struct se_cmd *cmd,
|
|
|
|
struct target_core_fabric_ops *tfo,
|
|
|
|
struct se_session *se_sess,
|
|
|
|
u32 data_length,
|
|
|
|
int data_direction,
|
|
|
|
int task_attr,
|
|
|
|
unsigned char *sense_buffer)
|
|
|
|
{
|
2011-07-19 10:26:37 +00:00
|
|
|
INIT_LIST_HEAD(&cmd->se_lun_node);
|
|
|
|
INIT_LIST_HEAD(&cmd->se_delayed_node);
|
2011-06-13 21:46:09 +00:00
|
|
|
INIT_LIST_HEAD(&cmd->se_qf_node);
|
2011-11-03 04:52:08 +00:00
|
|
|
INIT_LIST_HEAD(&cmd->se_cmd_list);
|
2012-04-24 04:25:05 +00:00
|
|
|
INIT_LIST_HEAD(&cmd->state_list);
|
2011-05-03 00:12:10 +00:00
|
|
|
init_completion(&cmd->transport_lun_fe_stop_comp);
|
|
|
|
init_completion(&cmd->transport_lun_stop_comp);
|
|
|
|
init_completion(&cmd->t_transport_stop_comp);
|
2011-11-03 04:52:08 +00:00
|
|
|
init_completion(&cmd->cmd_wait_comp);
|
2012-04-24 04:25:05 +00:00
|
|
|
init_completion(&cmd->task_stop_comp);
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_lock_init(&cmd->t_state_lock);
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state = CMD_T_DEV_ACTIVE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
cmd->se_tfo = tfo;
|
|
|
|
cmd->se_sess = se_sess;
|
|
|
|
cmd->data_length = data_length;
|
|
|
|
cmd->data_direction = data_direction;
|
|
|
|
cmd->sam_task_attr = task_attr;
|
|
|
|
cmd->sense_buffer = sense_buffer;
|
2012-04-24 04:25:05 +00:00
|
|
|
|
|
|
|
cmd->state_active = false;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_init_se_cmd);
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
static sense_reason_t
|
|
|
|
transport_check_alloc_task_attr(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2012-10-10 21:37:14 +00:00
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* Check if SAM Task Attribute emulation is enabled for this
|
|
|
|
* struct se_device storage object
|
|
|
|
*/
|
2012-10-10 21:37:14 +00:00
|
|
|
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return 0;
|
|
|
|
|
2011-05-20 03:19:14 +00:00
|
|
|
if (cmd->sam_task_attr == MSG_ACA_TAG) {
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("SAM Task Attribute ACA"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" emulation is not supported\n");
|
2012-11-06 20:24:09 +00:00
|
|
|
return TCM_INVALID_CDB_FIELD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Used to determine when ORDERED commands should go from
|
|
|
|
* Dormant to Active status.
|
|
|
|
*/
|
2012-10-10 21:37:14 +00:00
|
|
|
cmd->se_ordered_id = atomic_inc_return(&dev->dev_ordered_id);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
smp_mb__after_atomic_inc();
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("Allocated se_ordered_id: %u for Task Attr: 0x%02x on %s\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
cmd->se_ordered_id, cmd->sam_task_attr,
|
2012-10-10 21:37:14 +00:00
|
|
|
dev->transport->name);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
sense_reason_t
|
|
|
|
target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2012-10-08 04:03:19 +00:00
|
|
|
struct se_device *dev = cmd->se_dev;
|
2012-11-06 20:24:09 +00:00
|
|
|
sense_reason_t ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Ensure that the received CDB is less than the max (252 + 8) bytes
|
|
|
|
* for VARIABLE_LENGTH_CMD
|
|
|
|
*/
|
|
|
|
if (scsi_command_size(cdb) > SCSI_MAX_VARLEN_CDB_SIZE) {
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_err("Received SCSI CDB with command_size: %d that"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" exceeds SCSI_MAX_VARLEN_CDB_SIZE: %d\n",
|
|
|
|
scsi_command_size(cdb), SCSI_MAX_VARLEN_CDB_SIZE);
|
2012-11-06 20:24:09 +00:00
|
|
|
return TCM_INVALID_CDB_FIELD;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
/*
|
|
|
|
* If the received CDB is larger than TCM_MAX_COMMAND_SIZE,
|
|
|
|
* allocate the additional extended CDB buffer now.. Otherwise
|
|
|
|
* setup the pointer from __t_task_cdb to t_task_cdb.
|
|
|
|
*/
|
2011-05-03 00:12:10 +00:00
|
|
|
if (scsi_command_size(cdb) > sizeof(cmd->__t_task_cdb)) {
|
|
|
|
cmd->t_task_cdb = kzalloc(scsi_command_size(cdb),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
GFP_KERNEL);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!cmd->t_task_cdb) {
|
|
|
|
pr_err("Unable to allocate cmd->t_task_cdb"
|
2011-05-03 00:12:10 +00:00
|
|
|
" %u > sizeof(cmd->__t_task_cdb): %lu ops\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
scsi_command_size(cdb),
|
2011-05-03 00:12:10 +00:00
|
|
|
(unsigned long)sizeof(cmd->__t_task_cdb));
|
2012-11-06 20:24:09 +00:00
|
|
|
return TCM_OUT_OF_RESOURCES;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
} else
|
2011-05-03 00:12:10 +00:00
|
|
|
cmd->t_task_cdb = &cmd->__t_task_cdb[0];
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
2011-05-03 00:12:10 +00:00
|
|
|
* Copy the original CDB into cmd->
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2011-05-03 00:12:10 +00:00
|
|
|
memcpy(cmd->t_task_cdb, cdb, scsi_command_size(cdb));
|
2012-05-20 15:59:10 +00:00
|
|
|
|
2013-06-27 00:36:17 +00:00
|
|
|
trace_target_sequencer_start(cmd);
|
|
|
|
|
2012-05-20 15:59:10 +00:00
|
|
|
/*
|
|
|
|
* Check for an existing UNIT ATTENTION condition
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
ret = target_scsi3_ua_check(cmd);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
2012-05-20 15:59:10 +00:00
|
|
|
|
2012-10-10 21:37:16 +00:00
|
|
|
ret = target_alua_state_check(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
2012-05-20 15:59:10 +00:00
|
|
|
|
2012-10-10 21:37:15 +00:00
|
|
|
ret = target_check_reservation(cmd);
|
2013-03-29 06:06:00 +00:00
|
|
|
if (ret) {
|
|
|
|
cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT;
|
2012-10-10 21:37:15 +00:00
|
|
|
return ret;
|
2013-03-29 06:06:00 +00:00
|
|
|
}
|
2012-05-20 15:59:10 +00:00
|
|
|
|
2012-10-08 04:03:19 +00:00
|
|
|
ret = dev->transport->parse_cdb(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
ret = transport_check_alloc_task_attr(cmd);
|
|
|
|
if (ret)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return ret;
|
2012-05-20 15:59:10 +00:00
|
|
|
|
|
|
|
cmd->se_cmd_flags |= SCF_SUPPORTED_SAM_OPCODE;
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
spin_lock(&cmd->se_lun->lun_sep_lock);
|
|
|
|
if (cmd->se_lun->lun_sep)
|
|
|
|
cmd->se_lun->lun_sep->sep_stats.cmd_pdus++;
|
|
|
|
spin_unlock(&cmd->se_lun->lun_sep_lock);
|
|
|
|
return 0;
|
|
|
|
}
|
2012-04-03 22:51:20 +00:00
|
|
|
EXPORT_SYMBOL(target_setup_cmd_from_cdb);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-06-04 03:59:19 +00:00
|
|
|
/*
|
|
|
|
* Used by fabric module frontends to queue tasks directly.
|
|
|
|
* Many only be used from process context only
|
|
|
|
*/
|
|
|
|
int transport_handle_cdb_direct(
|
|
|
|
struct se_cmd *cmd)
|
|
|
|
{
|
2012-11-06 20:24:09 +00:00
|
|
|
sense_reason_t ret;
|
2011-07-30 12:03:58 +00:00
|
|
|
|
2011-06-04 03:59:19 +00:00
|
|
|
if (!cmd->se_lun) {
|
|
|
|
dump_stack();
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_err("cmd->se_lun is NULL\n");
|
2011-06-04 03:59:19 +00:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (in_interrupt()) {
|
|
|
|
dump_stack();
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_err("transport_generic_handle_cdb cannot be called"
|
2011-06-04 03:59:19 +00:00
|
|
|
" from interrupt context\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2011-07-30 12:03:58 +00:00
|
|
|
/*
|
2012-07-08 19:58:49 +00:00
|
|
|
* Set TRANSPORT_NEW_CMD state and CMD_T_ACTIVE to ensure that
|
|
|
|
* outstanding descriptors are handled correctly during shutdown via
|
|
|
|
* transport_wait_for_tasks()
|
2011-07-30 12:03:58 +00:00
|
|
|
*
|
|
|
|
* Also, we don't take cmd->t_state_lock here as we only expect
|
|
|
|
* this to be called for initial descriptor submission.
|
|
|
|
*/
|
|
|
|
cmd->t_state = TRANSPORT_NEW_CMD;
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state |= CMD_T_ACTIVE;
|
|
|
|
|
2011-07-30 12:03:58 +00:00
|
|
|
/*
|
|
|
|
* transport_generic_new_cmd() is already handling QUEUE_FULL,
|
|
|
|
* so follow TRANSPORT_NEW_CMD processing thread context usage
|
|
|
|
* and call transport_generic_request_failure() if necessary..
|
|
|
|
*/
|
|
|
|
ret = transport_generic_new_cmd(cmd);
|
2012-11-06 20:24:09 +00:00
|
|
|
if (ret)
|
|
|
|
transport_generic_request_failure(cmd, ret);
|
2011-07-30 12:03:58 +00:00
|
|
|
return 0;
|
2011-06-04 03:59:19 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_handle_cdb_direct);
|
|
|
|
|
2013-08-22 18:58:43 +00:00
|
|
|
sense_reason_t
|
2012-11-06 20:24:09 +00:00
|
|
|
transport_generic_map_mem_to_cmd(struct se_cmd *cmd, struct scatterlist *sgl,
|
|
|
|
u32 sgl_count, struct scatterlist *sgl_bidi, u32 sgl_bidi_count)
|
|
|
|
{
|
|
|
|
if (!sgl || !sgl_count)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Reject SCSI data overflow with map_mem_to_cmd() as incoming
|
|
|
|
* scatterlists already have been set to follow what the fabric
|
|
|
|
* passes for the original expected data transfer length.
|
|
|
|
*/
|
|
|
|
if (cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
|
|
|
|
pr_warn("Rejecting SCSI DATA overflow for fabric using"
|
|
|
|
" SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC\n");
|
|
|
|
return TCM_INVALID_CDB_FIELD;
|
|
|
|
}
|
|
|
|
|
|
|
|
cmd->t_data_sg = sgl;
|
|
|
|
cmd->t_data_nents = sgl_count;
|
|
|
|
|
|
|
|
if (sgl_bidi && sgl_bidi_count) {
|
|
|
|
cmd->t_bidi_data_sg = sgl_bidi;
|
|
|
|
cmd->t_bidi_data_nents = sgl_bidi_count;
|
|
|
|
}
|
|
|
|
cmd->se_cmd_flags |= SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-10-02 00:23:22 +00:00
|
|
|
/*
|
|
|
|
* target_submit_cmd_map_sgls - lookup unpacked lun and submit uninitialized
|
|
|
|
* se_cmd + use pre-allocated SGL memory.
|
2011-11-19 04:36:22 +00:00
|
|
|
*
|
|
|
|
* @se_cmd: command descriptor to submit
|
|
|
|
* @se_sess: associated se_sess for endpoint
|
|
|
|
* @cdb: pointer to SCSI CDB
|
|
|
|
* @sense: pointer to SCSI sense buffer
|
|
|
|
* @unpacked_lun: unpacked LUN to reference for struct se_lun
|
|
|
|
* @data_length: fabric expected data transfer length
|
|
|
|
* @task_addr: SAM task attribute
|
|
|
|
* @data_dir: DMA data direction
|
|
|
|
* @flags: flags for command submission from target_sc_flags_tables
|
2012-10-02 00:23:22 +00:00
|
|
|
* @sgl: struct scatterlist memory for unidirectional mapping
|
|
|
|
* @sgl_count: scatterlist count for unidirectional mapping
|
|
|
|
* @sgl_bidi: struct scatterlist memory for bidirectional READ mapping
|
|
|
|
* @sgl_bidi_count: scatterlist count for bidirectional READ mapping
|
2011-11-19 04:36:22 +00:00
|
|
|
*
|
2012-07-16 18:04:39 +00:00
|
|
|
* Returns non zero to signal active I/O shutdown failure. All other
|
|
|
|
* setup exceptions will be returned as a SCSI CHECK_CONDITION response,
|
|
|
|
* but still return zero here.
|
|
|
|
*
|
2011-11-19 04:36:22 +00:00
|
|
|
* This may only be called from process context, and also currently
|
|
|
|
* assumes internal allocation of fabric payload buffer by target-core.
|
2012-10-02 00:23:22 +00:00
|
|
|
*/
|
|
|
|
int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess,
|
2011-11-19 04:36:22 +00:00
|
|
|
unsigned char *cdb, unsigned char *sense, u32 unpacked_lun,
|
2012-10-02 00:23:22 +00:00
|
|
|
u32 data_length, int task_attr, int data_dir, int flags,
|
|
|
|
struct scatterlist *sgl, u32 sgl_count,
|
|
|
|
struct scatterlist *sgl_bidi, u32 sgl_bidi_count)
|
2011-11-19 04:36:22 +00:00
|
|
|
{
|
|
|
|
struct se_portal_group *se_tpg;
|
2012-11-06 20:24:09 +00:00
|
|
|
sense_reason_t rc;
|
|
|
|
int ret;
|
2011-11-19 04:36:22 +00:00
|
|
|
|
|
|
|
se_tpg = se_sess->se_tpg;
|
|
|
|
BUG_ON(!se_tpg);
|
|
|
|
BUG_ON(se_cmd->se_tfo || se_cmd->se_sess);
|
|
|
|
BUG_ON(in_interrupt());
|
|
|
|
/*
|
|
|
|
* Initialize se_cmd for target operation. From this point
|
|
|
|
* exceptions are handled by sending exception status via
|
|
|
|
* target_core_fabric_ops->queue_status() callback
|
|
|
|
*/
|
|
|
|
transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess,
|
|
|
|
data_length, data_dir, task_attr, sense);
|
2012-01-10 13:16:59 +00:00
|
|
|
if (flags & TARGET_SCF_UNKNOWN_SIZE)
|
|
|
|
se_cmd->unknown_data_length = 1;
|
2011-11-19 04:36:22 +00:00
|
|
|
/*
|
|
|
|
* Obtain struct se_cmd->cmd_kref reference and add new cmd to
|
|
|
|
* se_sess->sess_cmd_list. A second kref_get here is necessary
|
|
|
|
* for fabrics using TARGET_SCF_ACK_KREF that expect a second
|
|
|
|
* kref_put() to happen during fabric packet acknowledgement.
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
ret = target_get_sess_cmd(se_sess, se_cmd, (flags & TARGET_SCF_ACK_KREF));
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
2011-11-19 04:36:22 +00:00
|
|
|
/*
|
|
|
|
* Signal bidirectional data payloads to target-core
|
|
|
|
*/
|
|
|
|
if (flags & TARGET_SCF_BIDI_OP)
|
|
|
|
se_cmd->se_cmd_flags |= SCF_BIDI;
|
|
|
|
/*
|
|
|
|
* Locate se_lun pointer and attach it to struct se_cmd
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
rc = transport_lookup_cmd_lun(se_cmd, unpacked_lun);
|
|
|
|
if (rc) {
|
|
|
|
transport_send_check_condition_and_sense(se_cmd, rc, 0);
|
2012-01-21 03:02:56 +00:00
|
|
|
target_put_sess_cmd(se_sess, se_cmd);
|
2012-07-16 18:04:39 +00:00
|
|
|
return 0;
|
2012-01-21 03:02:56 +00:00
|
|
|
}
|
2012-05-20 15:59:14 +00:00
|
|
|
|
2012-04-03 22:51:20 +00:00
|
|
|
rc = target_setup_cmd_from_cdb(se_cmd, cdb);
|
2012-01-21 03:02:56 +00:00
|
|
|
if (rc != 0) {
|
2012-11-06 20:24:09 +00:00
|
|
|
transport_generic_request_failure(se_cmd, rc);
|
2012-07-16 18:04:39 +00:00
|
|
|
return 0;
|
2012-01-21 03:02:56 +00:00
|
|
|
}
|
2012-10-02 00:23:22 +00:00
|
|
|
/*
|
|
|
|
* When a non zero sgl_count has been passed perform SGL passthrough
|
|
|
|
* mapping for pre-allocated fabric memory instead of having target
|
|
|
|
* core perform an internal SGL allocation..
|
|
|
|
*/
|
|
|
|
if (sgl_count != 0) {
|
|
|
|
BUG_ON(!sgl);
|
|
|
|
|
2012-10-02 21:00:33 +00:00
|
|
|
/*
|
|
|
|
* A work-around for tcm_loop as some userspace code via
|
|
|
|
* scsi-generic do not memset their associated read buffers,
|
|
|
|
* so go ahead and do that here for type non-data CDBs. Also
|
|
|
|
* note that this is currently guaranteed to be a single SGL
|
|
|
|
* for this case by target core in target_setup_cmd_from_cdb()
|
|
|
|
* -> transport_generic_cmd_sequencer().
|
|
|
|
*/
|
|
|
|
if (!(se_cmd->se_cmd_flags & SCF_SCSI_DATA_CDB) &&
|
|
|
|
se_cmd->data_direction == DMA_FROM_DEVICE) {
|
|
|
|
unsigned char *buf = NULL;
|
|
|
|
|
|
|
|
if (sgl)
|
|
|
|
buf = kmap(sg_page(sgl)) + sgl->offset;
|
|
|
|
|
|
|
|
if (buf) {
|
|
|
|
memset(buf, 0, sgl->length);
|
|
|
|
kunmap(sg_page(sgl));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-10-02 00:23:22 +00:00
|
|
|
rc = transport_generic_map_mem_to_cmd(se_cmd, sgl, sgl_count,
|
|
|
|
sgl_bidi, sgl_bidi_count);
|
|
|
|
if (rc != 0) {
|
2012-11-06 20:24:09 +00:00
|
|
|
transport_generic_request_failure(se_cmd, rc);
|
2012-10-02 00:23:22 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
2012-04-03 22:51:28 +00:00
|
|
|
/*
|
|
|
|
* Check if we need to delay processing because of ALUA
|
|
|
|
* Active/NonOptimized primary access state..
|
|
|
|
*/
|
|
|
|
core_alua_check_nonop_delay(se_cmd);
|
|
|
|
|
2011-11-19 04:36:22 +00:00
|
|
|
transport_handle_cdb_direct(se_cmd);
|
2012-07-16 18:04:39 +00:00
|
|
|
return 0;
|
2011-11-19 04:36:22 +00:00
|
|
|
}
|
2012-10-02 00:23:22 +00:00
|
|
|
EXPORT_SYMBOL(target_submit_cmd_map_sgls);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* target_submit_cmd - lookup unpacked lun and submit uninitialized se_cmd
|
|
|
|
*
|
|
|
|
* @se_cmd: command descriptor to submit
|
|
|
|
* @se_sess: associated se_sess for endpoint
|
|
|
|
* @cdb: pointer to SCSI CDB
|
|
|
|
* @sense: pointer to SCSI sense buffer
|
|
|
|
* @unpacked_lun: unpacked LUN to reference for struct se_lun
|
|
|
|
* @data_length: fabric expected data transfer length
|
|
|
|
* @task_addr: SAM task attribute
|
|
|
|
* @data_dir: DMA data direction
|
|
|
|
* @flags: flags for command submission from target_sc_flags_tables
|
|
|
|
*
|
|
|
|
* Returns non zero to signal active I/O shutdown failure. All other
|
|
|
|
* setup exceptions will be returned as a SCSI CHECK_CONDITION response,
|
|
|
|
* but still return zero here.
|
|
|
|
*
|
|
|
|
* This may only be called from process context, and also currently
|
|
|
|
* assumes internal allocation of fabric payload buffer by target-core.
|
|
|
|
*
|
|
|
|
* It also assumes interal target core SGL memory allocation.
|
|
|
|
*/
|
|
|
|
int target_submit_cmd(struct se_cmd *se_cmd, struct se_session *se_sess,
|
|
|
|
unsigned char *cdb, unsigned char *sense, u32 unpacked_lun,
|
|
|
|
u32 data_length, int task_attr, int data_dir, int flags)
|
|
|
|
{
|
|
|
|
return target_submit_cmd_map_sgls(se_cmd, se_sess, cdb, sense,
|
|
|
|
unpacked_lun, data_length, task_attr, data_dir,
|
|
|
|
flags, NULL, 0, NULL, 0);
|
|
|
|
}
|
2011-11-19 04:36:22 +00:00
|
|
|
EXPORT_SYMBOL(target_submit_cmd);
|
|
|
|
|
2012-02-25 13:02:48 +00:00
|
|
|
static void target_complete_tmr_failure(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct se_cmd *se_cmd = container_of(work, struct se_cmd, work);
|
|
|
|
|
|
|
|
se_cmd->se_tmr_req->response = TMR_LUN_DOES_NOT_EXIST;
|
|
|
|
se_cmd->se_tfo->queue_tm_rsp(se_cmd);
|
2013-01-02 20:47:59 +00:00
|
|
|
|
|
|
|
transport_cmd_check_stop_to_fabric(se_cmd);
|
2012-02-25 13:02:48 +00:00
|
|
|
}
|
|
|
|
|
2012-01-19 21:39:21 +00:00
|
|
|
/**
|
|
|
|
* target_submit_tmr - lookup unpacked lun and submit uninitialized se_cmd
|
|
|
|
* for TMR CDBs
|
|
|
|
*
|
|
|
|
* @se_cmd: command descriptor to submit
|
|
|
|
* @se_sess: associated se_sess for endpoint
|
|
|
|
* @sense: pointer to SCSI sense buffer
|
|
|
|
* @unpacked_lun: unpacked LUN to reference for struct se_lun
|
|
|
|
* @fabric_context: fabric context for TMR req
|
|
|
|
* @tm_type: Type of TM request
|
2012-02-25 13:10:04 +00:00
|
|
|
* @gfp: gfp type for caller
|
|
|
|
* @tag: referenced task tag for TMR_ABORT_TASK
|
2012-02-25 09:40:24 +00:00
|
|
|
* @flags: submit cmd flags
|
2012-01-19 21:39:21 +00:00
|
|
|
*
|
|
|
|
* Callable from all contexts.
|
|
|
|
**/
|
|
|
|
|
2012-02-25 09:40:24 +00:00
|
|
|
int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
|
2012-01-19 21:39:21 +00:00
|
|
|
unsigned char *sense, u32 unpacked_lun,
|
2012-02-25 13:10:04 +00:00
|
|
|
void *fabric_tmr_ptr, unsigned char tm_type,
|
|
|
|
gfp_t gfp, unsigned int tag, int flags)
|
2012-01-19 21:39:21 +00:00
|
|
|
{
|
|
|
|
struct se_portal_group *se_tpg;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
se_tpg = se_sess->se_tpg;
|
|
|
|
BUG_ON(!se_tpg);
|
|
|
|
|
|
|
|
transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess,
|
|
|
|
0, DMA_NONE, MSG_SIMPLE_TAG, sense);
|
2012-02-25 09:40:24 +00:00
|
|
|
/*
|
|
|
|
* FIXME: Currently expect caller to handle se_cmd->se_tmr_req
|
|
|
|
* allocation failure.
|
|
|
|
*/
|
2012-02-25 13:10:04 +00:00
|
|
|
ret = core_tmr_alloc_req(se_cmd, fabric_tmr_ptr, tm_type, gfp);
|
2012-02-25 09:40:24 +00:00
|
|
|
if (ret < 0)
|
|
|
|
return -ENOMEM;
|
2012-01-19 21:39:21 +00:00
|
|
|
|
2012-02-25 13:10:04 +00:00
|
|
|
if (tm_type == TMR_ABORT_TASK)
|
|
|
|
se_cmd->se_tmr_req->ref_task_tag = tag;
|
|
|
|
|
2012-01-19 21:39:21 +00:00
|
|
|
/* See target_submit_cmd for commentary */
|
target: Check sess_tearing_down in target_get_sess_cmd()
Target core code assumes that target_splice_sess_cmd_list() has set
sess_tearing_down and moved the list of pending commands to
sess_wait_list, no more commands will be added to the session; if any
are added, nothing keeps the se_session from being freed while the
command is still in flight, which e.g. leads to use-after-free of
se_cmd->se_sess in target_release_cmd_kref().
To enforce this invariant, put a check of sess_tearing_down inside of
sess_cmd_lock in target_get_sess_cmd(); any checks before this are
racy and can lead to the use-after-free described above. For example,
the qla_target check in qlt_do_work() checks sess_tearing_down from
work thread context but then drops all locks before calling
target_submit_cmd() (as it must, since that is a sleeping function).
However, since no locks are held, anything can happen with respect to
the session it has looked up -- although it does correctly get
sess_kref within its lock, so the memory won't be freed while
target_submit_cmd() is actually running, nothing stops eg an ACL from
being dropped and calling ->shutdown_session() (which calls into
target_splice_sess_cmd_list()) before we get to target_get_sess_cmd().
Once this happens, the se_session memory can be freed as soon as
target_submit_cmd() returns and qlt_do_work() drops its reference,
even though we've just added a command to sess_cmd_list.
To prevent this use-after-free, check sess_tearing_down inside of
sess_cmd_lock right before target_get_sess_cmd() adds a command to
sess_cmd_list; this is synchronized with target_splice_sess_cmd_list()
so that every command is either waited for or not added to the queue.
(nab: Keep target_submit_cmd() returning void for now..)
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16 18:04:40 +00:00
|
|
|
ret = target_get_sess_cmd(se_sess, se_cmd, (flags & TARGET_SCF_ACK_KREF));
|
|
|
|
if (ret) {
|
|
|
|
core_tmr_release_req(se_cmd->se_tmr_req);
|
|
|
|
return ret;
|
|
|
|
}
|
2012-01-19 21:39:21 +00:00
|
|
|
|
|
|
|
ret = transport_lookup_tmr_lun(se_cmd, unpacked_lun);
|
|
|
|
if (ret) {
|
2012-02-25 13:02:48 +00:00
|
|
|
/*
|
|
|
|
* For callback during failure handling, push this work off
|
|
|
|
* to process context with TMR_LUN_DOES_NOT_EXIST status.
|
|
|
|
*/
|
|
|
|
INIT_WORK(&se_cmd->work, target_complete_tmr_failure);
|
|
|
|
schedule_work(&se_cmd->work);
|
2012-02-25 09:40:24 +00:00
|
|
|
return 0;
|
2012-01-19 21:39:21 +00:00
|
|
|
}
|
|
|
|
transport_generic_handle_tmr(se_cmd);
|
2012-02-25 09:40:24 +00:00
|
|
|
return 0;
|
2012-01-19 21:39:21 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(target_submit_tmr);
|
|
|
|
|
2011-10-17 17:56:46 +00:00
|
|
|
/*
|
2012-04-24 04:25:05 +00:00
|
|
|
* If the cmd is active, request it to be stopped and sleep until it
|
2011-10-17 17:56:46 +00:00
|
|
|
* has completed.
|
|
|
|
*/
|
2012-04-24 04:25:05 +00:00
|
|
|
bool target_stop_cmd(struct se_cmd *cmd, unsigned long *flags)
|
2011-10-17 17:56:46 +00:00
|
|
|
{
|
|
|
|
bool was_active = false;
|
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
if (cmd->transport_state & CMD_T_BUSY) {
|
|
|
|
cmd->transport_state |= CMD_T_REQUEST_STOP;
|
2011-10-17 17:56:46 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, *flags);
|
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
pr_debug("cmd %p waiting to complete\n", cmd);
|
|
|
|
wait_for_completion(&cmd->task_stop_comp);
|
|
|
|
pr_debug("cmd %p stopped successfully\n", cmd);
|
2011-10-17 17:56:46 +00:00
|
|
|
|
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, *flags);
|
2012-04-24 04:25:05 +00:00
|
|
|
cmd->transport_state &= ~CMD_T_REQUEST_STOP;
|
|
|
|
cmd->transport_state &= ~CMD_T_BUSY;
|
2011-10-17 17:56:46 +00:00
|
|
|
was_active = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return was_active;
|
|
|
|
}
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* Handle SAM-esque emulation for generic transport request failures.
|
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
void transport_generic_request_failure(struct se_cmd *cmd,
|
|
|
|
sense_reason_t sense_reason)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2011-06-13 21:46:09 +00:00
|
|
|
int ret = 0;
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("-----[ Storage Engine Exception for cmd: %p ITT: 0x%08x"
|
2011-07-19 08:55:10 +00:00
|
|
|
" CDB: 0x%02x\n", cmd, cmd->se_tfo->get_task_tag(cmd),
|
2011-05-03 00:12:10 +00:00
|
|
|
cmd->t_task_cdb[0]);
|
2012-11-06 20:24:09 +00:00
|
|
|
pr_debug("-----[ i_state: %d t_state: %d sense_reason: %d\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->get_cmd_state(cmd),
|
2012-11-06 20:24:09 +00:00
|
|
|
cmd->t_state, sense_reason);
|
2012-04-24 04:25:08 +00:00
|
|
|
pr_debug("-----[ CMD_T_ACTIVE: %d CMD_T_STOP: %d CMD_T_SENT: %d\n",
|
2011-12-21 19:13:47 +00:00
|
|
|
(cmd->transport_state & CMD_T_ACTIVE) != 0,
|
|
|
|
(cmd->transport_state & CMD_T_STOP) != 0,
|
|
|
|
(cmd->transport_state & CMD_T_SENT) != 0);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* For SAM Task Attribute emulation for failed struct se_cmd
|
|
|
|
*/
|
2012-10-10 21:37:14 +00:00
|
|
|
transport_complete_task_attr(cmd);
|
2013-08-22 02:34:43 +00:00
|
|
|
/*
|
|
|
|
* Handle special case for COMPARE_AND_WRITE failure, where the
|
|
|
|
* callback is expected to drop the per device ->caw_mutex.
|
|
|
|
*/
|
|
|
|
if ((cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE) &&
|
|
|
|
cmd->transport_complete_callback)
|
|
|
|
cmd->transport_complete_callback(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
switch (sense_reason) {
|
2011-11-04 09:36:16 +00:00
|
|
|
case TCM_NON_EXISTENT_LUN:
|
|
|
|
case TCM_UNSUPPORTED_SCSI_OPCODE:
|
|
|
|
case TCM_INVALID_CDB_FIELD:
|
|
|
|
case TCM_INVALID_PARAMETER_LIST:
|
2013-02-08 23:18:39 +00:00
|
|
|
case TCM_PARAMETER_LIST_LENGTH_ERROR:
|
2011-11-04 09:36:16 +00:00
|
|
|
case TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE:
|
|
|
|
case TCM_UNKNOWN_MODE_PAGE:
|
|
|
|
case TCM_WRITE_PROTECTED:
|
2012-07-16 22:34:21 +00:00
|
|
|
case TCM_ADDRESS_OUT_OF_RANGE:
|
2011-11-04 09:36:16 +00:00
|
|
|
case TCM_CHECK_CONDITION_ABORT_CMD:
|
|
|
|
case TCM_CHECK_CONDITION_UNIT_ATTENTION:
|
|
|
|
case TCM_CHECK_CONDITION_NOT_READY:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
2012-11-06 20:24:09 +00:00
|
|
|
case TCM_OUT_OF_RESOURCES:
|
|
|
|
sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
break;
|
2011-11-04 09:36:16 +00:00
|
|
|
case TCM_RESERVATION_CONFLICT:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* No SENSE Data payload for this case, set SCSI Status
|
|
|
|
* and queue the response to $FABRIC_MOD.
|
|
|
|
*
|
|
|
|
* Uses linux/include/scsi/scsi.h SAM status codes defs
|
|
|
|
*/
|
|
|
|
cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT;
|
|
|
|
/*
|
|
|
|
* For UA Interlock Code 11b, a RESERVATION CONFLICT will
|
|
|
|
* establish a UNIT ATTENTION with PREVIOUS RESERVATION
|
|
|
|
* CONFLICT STATUS.
|
|
|
|
*
|
|
|
|
* See spc4r17, section 7.4.6 Control Mode Page, Table 349
|
|
|
|
*/
|
2011-07-19 08:55:10 +00:00
|
|
|
if (cmd->se_sess &&
|
2012-10-08 04:03:19 +00:00
|
|
|
cmd->se_dev->dev_attrib.emulate_ua_intlck_ctrl == 2)
|
2011-07-19 08:55:10 +00:00
|
|
|
core_scsi3_ua_allocate(cmd->se_sess->se_node_acl,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
cmd->orig_fe_lun, 0x2C,
|
|
|
|
ASCQ_2CH_PREVIOUS_RESERVATION_CONFLICT_STATUS);
|
|
|
|
|
2013-06-27 00:36:17 +00:00
|
|
|
trace_target_cmd_complete(cmd);
|
|
|
|
ret = cmd->se_tfo-> queue_status(cmd);
|
2011-10-26 06:57:41 +00:00
|
|
|
if (ret == -EAGAIN || ret == -ENOMEM)
|
2011-06-13 21:46:09 +00:00
|
|
|
goto queue_full;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
goto check_stop;
|
|
|
|
default:
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_err("Unknown transport error for CDB 0x%02x: %d\n",
|
2012-11-06 20:24:09 +00:00
|
|
|
cmd->t_task_cdb[0], sense_reason);
|
|
|
|
sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
}
|
2012-07-08 19:58:48 +00:00
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
ret = transport_send_check_condition_and_sense(cmd, sense_reason, 0);
|
2011-11-04 09:36:16 +00:00
|
|
|
if (ret == -EAGAIN || ret == -ENOMEM)
|
|
|
|
goto queue_full;
|
2011-06-13 21:46:09 +00:00
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
check_stop:
|
|
|
|
transport_lun_remove_cmd(cmd);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!transport_cmd_check_stop_to_fabric(cmd))
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
;
|
2011-06-13 21:46:09 +00:00
|
|
|
return;
|
|
|
|
|
|
|
|
queue_full:
|
2011-10-17 17:56:41 +00:00
|
|
|
cmd->t_state = TRANSPORT_COMPLETE_QF_OK;
|
|
|
|
transport_handle_queue_full(cmd, cmd->se_dev);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2012-02-11 00:18:11 +00:00
|
|
|
EXPORT_SYMBOL(transport_generic_request_failure);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2013-08-21 23:04:10 +00:00
|
|
|
void __target_execute_cmd(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2012-11-06 20:24:09 +00:00
|
|
|
sense_reason_t ret;
|
2012-05-20 18:34:44 +00:00
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
if (cmd->execute_cmd) {
|
|
|
|
ret = cmd->execute_cmd(cmd);
|
|
|
|
if (ret) {
|
|
|
|
spin_lock_irq(&cmd->t_state_lock);
|
|
|
|
cmd->transport_state &= ~(CMD_T_BUSY|CMD_T_SENT);
|
|
|
|
spin_unlock_irq(&cmd->t_state_lock);
|
2012-05-20 18:34:44 +00:00
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
transport_generic_request_failure(cmd, ret);
|
|
|
|
}
|
2012-05-20 18:34:44 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-10-10 21:37:14 +00:00
|
|
|
static bool target_handle_task_attr(struct se_cmd *cmd)
|
2012-05-20 18:34:44 +00:00
|
|
|
{
|
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
|
2012-10-10 21:37:14 +00:00
|
|
|
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
|
|
|
|
return false;
|
2012-05-20 18:34:44 +00:00
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
2011-03-31 01:57:33 +00:00
|
|
|
* Check for the existence of HEAD_OF_QUEUE, and if true return 1
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
* to allow the passed struct se_cmd list of tasks to the front of the list.
|
|
|
|
*/
|
2012-05-20 18:34:44 +00:00
|
|
|
switch (cmd->sam_task_attr) {
|
|
|
|
case MSG_HEAD_TAG:
|
|
|
|
pr_debug("Added HEAD_OF_QUEUE for CDB: 0x%02x, "
|
|
|
|
"se_ordered_id: %u\n",
|
|
|
|
cmd->t_task_cdb[0], cmd->se_ordered_id);
|
2012-10-10 21:37:14 +00:00
|
|
|
return false;
|
2012-05-20 18:34:44 +00:00
|
|
|
case MSG_ORDERED_TAG:
|
|
|
|
atomic_inc(&dev->dev_ordered_sync);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
|
2012-05-20 18:34:44 +00:00
|
|
|
pr_debug("Added ORDERED for CDB: 0x%02x to ordered list, "
|
|
|
|
" se_ordered_id: %u\n",
|
|
|
|
cmd->t_task_cdb[0], cmd->se_ordered_id);
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
2012-05-20 18:34:44 +00:00
|
|
|
* Execute an ORDERED command if no other older commands
|
|
|
|
* exist that need to be completed first.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2012-05-20 18:34:44 +00:00
|
|
|
if (!atomic_read(&dev->simple_cmds))
|
2012-10-10 21:37:14 +00:00
|
|
|
return false;
|
2012-05-20 18:34:44 +00:00
|
|
|
break;
|
|
|
|
default:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* For SIMPLE and UNTAGGED Task Attribute commands
|
|
|
|
*/
|
2012-05-20 18:34:44 +00:00
|
|
|
atomic_inc(&dev->simple_cmds);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
smp_mb__after_atomic_inc();
|
2012-05-20 18:34:44 +00:00
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2012-05-20 18:34:44 +00:00
|
|
|
|
2012-10-10 21:37:14 +00:00
|
|
|
if (atomic_read(&dev->dev_ordered_sync) == 0)
|
|
|
|
return false;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-10-10 21:37:14 +00:00
|
|
|
spin_lock(&dev->delayed_cmd_lock);
|
|
|
|
list_add_tail(&cmd->se_delayed_node, &dev->delayed_cmd_list);
|
|
|
|
spin_unlock(&dev->delayed_cmd_lock);
|
|
|
|
|
|
|
|
pr_debug("Added CDB: 0x%02x Task Attr: 0x%02x to"
|
|
|
|
" delayed CMD list, se_ordered_id: %u\n",
|
|
|
|
cmd->t_task_cdb[0], cmd->sam_task_attr,
|
|
|
|
cmd->se_ordered_id);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
void target_execute_cmd(struct se_cmd *cmd)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* If the received CDB has aleady been aborted stop processing it here.
|
|
|
|
*/
|
2012-12-15 22:25:10 +00:00
|
|
|
if (transport_check_aborted_status(cmd, 1)) {
|
|
|
|
complete(&cmd->transport_lun_stop_comp);
|
2012-05-20 18:34:44 +00:00
|
|
|
return;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2012-10-10 21:37:14 +00:00
|
|
|
* Determine if IOCTL context caller in requesting the stopping of this
|
|
|
|
* command for LUN shutdown purposes.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2012-10-10 21:37:14 +00:00
|
|
|
spin_lock_irq(&cmd->t_state_lock);
|
|
|
|
if (cmd->transport_state & CMD_T_LUN_STOP) {
|
|
|
|
pr_debug("%s:%d CMD_T_LUN_STOP for ITT: 0x%08x\n",
|
|
|
|
__func__, __LINE__, cmd->se_tfo->get_task_tag(cmd));
|
|
|
|
|
|
|
|
cmd->transport_state &= ~CMD_T_ACTIVE;
|
|
|
|
spin_unlock_irq(&cmd->t_state_lock);
|
|
|
|
complete(&cmd->transport_lun_stop_comp);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Determine if frontend context caller is requesting the stopping of
|
|
|
|
* this command for frontend exceptions.
|
|
|
|
*/
|
|
|
|
if (cmd->transport_state & CMD_T_STOP) {
|
|
|
|
pr_debug("%s:%d CMD_T_STOP for ITT: 0x%08x\n",
|
|
|
|
__func__, __LINE__,
|
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
|
|
|
|
|
|
|
spin_unlock_irq(&cmd->t_state_lock);
|
|
|
|
complete(&cmd->t_transport_stop_comp);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
cmd->t_state = TRANSPORT_PROCESSING;
|
2013-06-06 08:40:27 +00:00
|
|
|
cmd->transport_state |= CMD_T_ACTIVE|CMD_T_BUSY|CMD_T_SENT;
|
2012-10-10 21:37:14 +00:00
|
|
|
spin_unlock_irq(&cmd->t_state_lock);
|
|
|
|
|
2013-06-06 08:40:27 +00:00
|
|
|
if (target_handle_task_attr(cmd)) {
|
|
|
|
spin_lock_irq(&cmd->t_state_lock);
|
|
|
|
cmd->transport_state &= ~CMD_T_BUSY|CMD_T_SENT;
|
|
|
|
spin_unlock_irq(&cmd->t_state_lock);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
__target_execute_cmd(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2012-07-08 19:58:39 +00:00
|
|
|
EXPORT_SYMBOL(target_execute_cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-05-20 18:34:44 +00:00
|
|
|
/*
|
|
|
|
* Process all commands up to the last received ORDERED task attribute which
|
|
|
|
* requires another blocking boundary
|
|
|
|
*/
|
|
|
|
static void target_restart_delayed_cmds(struct se_device *dev)
|
|
|
|
{
|
|
|
|
for (;;) {
|
|
|
|
struct se_cmd *cmd;
|
|
|
|
|
|
|
|
spin_lock(&dev->delayed_cmd_lock);
|
|
|
|
if (list_empty(&dev->delayed_cmd_list)) {
|
|
|
|
spin_unlock(&dev->delayed_cmd_lock);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
cmd = list_entry(dev->delayed_cmd_list.next,
|
|
|
|
struct se_cmd, se_delayed_node);
|
|
|
|
list_del(&cmd->se_delayed_node);
|
|
|
|
spin_unlock(&dev->delayed_cmd_lock);
|
|
|
|
|
|
|
|
__target_execute_cmd(cmd);
|
|
|
|
|
|
|
|
if (cmd->sam_task_attr == MSG_ORDERED_TAG)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
2011-10-17 17:56:53 +00:00
|
|
|
* Called from I/O completion to determine which dormant/delayed
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
* and ordered cmds need to have their tasks added to the execution queue.
|
|
|
|
*/
|
|
|
|
static void transport_complete_task_attr(struct se_cmd *cmd)
|
|
|
|
{
|
2011-07-19 10:26:37 +00:00
|
|
|
struct se_device *dev = cmd->se_dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-10-10 21:37:14 +00:00
|
|
|
if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
|
|
|
|
return;
|
|
|
|
|
2011-05-20 03:19:14 +00:00
|
|
|
if (cmd->sam_task_attr == MSG_SIMPLE_TAG) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
atomic_dec(&dev->simple_cmds);
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
dev->dev_cur_ordered_id++;
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("Incremented dev->dev_cur_ordered_id: %u for"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" SIMPLE: %u\n", dev->dev_cur_ordered_id,
|
|
|
|
cmd->se_ordered_id);
|
2011-05-20 03:19:14 +00:00
|
|
|
} else if (cmd->sam_task_attr == MSG_HEAD_TAG) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
dev->dev_cur_ordered_id++;
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("Incremented dev_cur_ordered_id: %u for"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" HEAD_OF_QUEUE: %u\n", dev->dev_cur_ordered_id,
|
|
|
|
cmd->se_ordered_id);
|
2011-05-20 03:19:14 +00:00
|
|
|
} else if (cmd->sam_task_attr == MSG_ORDERED_TAG) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
atomic_dec(&dev->dev_ordered_sync);
|
|
|
|
smp_mb__after_atomic_dec();
|
|
|
|
|
|
|
|
dev->dev_cur_ordered_id++;
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("Incremented dev_cur_ordered_id: %u for ORDERED:"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" %u\n", dev->dev_cur_ordered_id, cmd->se_ordered_id);
|
|
|
|
}
|
|
|
|
|
2012-05-20 18:34:44 +00:00
|
|
|
target_restart_delayed_cmds(dev);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2011-10-17 17:56:41 +00:00
|
|
|
static void transport_complete_qf(struct se_cmd *cmd)
|
2011-06-13 21:46:09 +00:00
|
|
|
{
|
|
|
|
int ret = 0;
|
|
|
|
|
2012-10-10 21:37:14 +00:00
|
|
|
transport_complete_task_attr(cmd);
|
2011-10-17 17:56:41 +00:00
|
|
|
|
|
|
|
if (cmd->se_cmd_flags & SCF_TRANSPORT_TASK_SENSE) {
|
2013-06-27 00:36:17 +00:00
|
|
|
trace_target_cmd_complete(cmd);
|
2011-10-17 17:56:41 +00:00
|
|
|
ret = cmd->se_tfo->queue_status(cmd);
|
|
|
|
if (ret)
|
|
|
|
goto out;
|
|
|
|
}
|
2011-06-13 21:46:09 +00:00
|
|
|
|
|
|
|
switch (cmd->data_direction) {
|
|
|
|
case DMA_FROM_DEVICE:
|
2013-06-27 00:36:17 +00:00
|
|
|
trace_target_cmd_complete(cmd);
|
2011-06-13 21:46:09 +00:00
|
|
|
ret = cmd->se_tfo->queue_data_in(cmd);
|
|
|
|
break;
|
|
|
|
case DMA_TO_DEVICE:
|
2013-08-21 21:39:19 +00:00
|
|
|
if (cmd->se_cmd_flags & SCF_BIDI) {
|
2011-06-13 21:46:09 +00:00
|
|
|
ret = cmd->se_tfo->queue_data_in(cmd);
|
|
|
|
if (ret < 0)
|
2011-10-17 17:56:41 +00:00
|
|
|
break;
|
2011-06-13 21:46:09 +00:00
|
|
|
}
|
|
|
|
/* Fall through for DMA_TO_DEVICE */
|
|
|
|
case DMA_NONE:
|
2013-06-27 00:36:17 +00:00
|
|
|
trace_target_cmd_complete(cmd);
|
2011-06-13 21:46:09 +00:00
|
|
|
ret = cmd->se_tfo->queue_status(cmd);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2011-10-17 17:56:41 +00:00
|
|
|
out:
|
|
|
|
if (ret < 0) {
|
|
|
|
transport_handle_queue_full(cmd, cmd->se_dev);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
transport_lun_remove_cmd(cmd);
|
|
|
|
transport_cmd_check_stop_to_fabric(cmd);
|
2011-06-13 21:46:09 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void transport_handle_queue_full(
|
|
|
|
struct se_cmd *cmd,
|
2011-10-17 17:56:41 +00:00
|
|
|
struct se_device *dev)
|
2011-06-13 21:46:09 +00:00
|
|
|
{
|
|
|
|
spin_lock_irq(&dev->qf_cmd_lock);
|
|
|
|
list_add_tail(&cmd->se_qf_node, &cmd->se_dev->qf_cmd_list);
|
|
|
|
atomic_inc(&dev->dev_qf_count);
|
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
spin_unlock_irq(&cmd->se_dev->qf_cmd_lock);
|
|
|
|
|
|
|
|
schedule_work(&cmd->se_dev->qf_work_queue);
|
|
|
|
}
|
|
|
|
|
2011-10-17 17:56:53 +00:00
|
|
|
static void target_complete_ok_work(struct work_struct *work)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2011-10-17 17:56:53 +00:00
|
|
|
struct se_cmd *cmd = container_of(work, struct se_cmd, work);
|
2012-09-05 15:09:14 +00:00
|
|
|
int ret;
|
2011-10-17 17:56:53 +00:00
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* Check if we need to move delayed/dormant tasks from cmds on the
|
|
|
|
* delayed execution list after a HEAD_OF_QUEUE or ORDERED Task
|
|
|
|
* Attribute.
|
|
|
|
*/
|
2012-10-10 21:37:14 +00:00
|
|
|
transport_complete_task_attr(cmd);
|
|
|
|
|
2011-06-13 21:46:09 +00:00
|
|
|
/*
|
|
|
|
* Check to schedule QUEUE_FULL work, or execute an existing
|
|
|
|
* cmd->transport_qf_callback()
|
|
|
|
*/
|
|
|
|
if (atomic_read(&cmd->se_dev->dev_qf_count) != 0)
|
|
|
|
schedule_work(&cmd->se_dev->qf_work_queue);
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
2012-09-05 15:09:15 +00:00
|
|
|
* Check if we need to send a sense buffer from
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
* the struct se_cmd in question.
|
|
|
|
*/
|
|
|
|
if (cmd->se_cmd_flags & SCF_TRANSPORT_TASK_SENSE) {
|
2012-09-05 15:09:14 +00:00
|
|
|
WARN_ON(!cmd->scsi_status);
|
|
|
|
ret = transport_send_check_condition_and_sense(
|
|
|
|
cmd, 0, 1);
|
|
|
|
if (ret == -EAGAIN || ret == -ENOMEM)
|
|
|
|
goto queue_full;
|
|
|
|
|
|
|
|
transport_lun_remove_cmd(cmd);
|
|
|
|
transport_cmd_check_stop_to_fabric(cmd);
|
|
|
|
return;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
/*
|
2011-03-31 01:57:33 +00:00
|
|
|
* Check for a callback, used by amongst other things
|
2013-08-19 21:34:17 +00:00
|
|
|
* XDWRITE_READ_10 and COMPARE_AND_WRITE emulation.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2013-08-19 21:34:17 +00:00
|
|
|
if (cmd->transport_complete_callback) {
|
|
|
|
sense_reason_t rc;
|
|
|
|
|
|
|
|
rc = cmd->transport_complete_callback(cmd);
|
2013-08-22 01:10:04 +00:00
|
|
|
if (!rc && !(cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE_POST)) {
|
2013-08-19 21:34:17 +00:00
|
|
|
return;
|
2013-08-22 01:10:04 +00:00
|
|
|
} else if (rc) {
|
|
|
|
ret = transport_send_check_condition_and_sense(cmd,
|
|
|
|
rc, 0);
|
|
|
|
if (ret == -EAGAIN || ret == -ENOMEM)
|
|
|
|
goto queue_full;
|
2013-08-19 21:34:17 +00:00
|
|
|
|
2013-08-22 01:10:04 +00:00
|
|
|
transport_lun_remove_cmd(cmd);
|
|
|
|
transport_cmd_check_stop_to_fabric(cmd);
|
|
|
|
return;
|
|
|
|
}
|
2013-08-19 21:34:17 +00:00
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
switch (cmd->data_direction) {
|
|
|
|
case DMA_FROM_DEVICE:
|
|
|
|
spin_lock(&cmd->se_lun->lun_sep_lock);
|
2011-07-19 08:55:10 +00:00
|
|
|
if (cmd->se_lun->lun_sep) {
|
|
|
|
cmd->se_lun->lun_sep->sep_stats.tx_data_octets +=
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
cmd->data_length;
|
|
|
|
}
|
|
|
|
spin_unlock(&cmd->se_lun->lun_sep_lock);
|
|
|
|
|
2013-06-27 00:36:17 +00:00
|
|
|
trace_target_cmd_complete(cmd);
|
2011-06-13 21:46:09 +00:00
|
|
|
ret = cmd->se_tfo->queue_data_in(cmd);
|
2011-10-26 06:57:41 +00:00
|
|
|
if (ret == -EAGAIN || ret == -ENOMEM)
|
2011-06-13 21:46:09 +00:00
|
|
|
goto queue_full;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
case DMA_TO_DEVICE:
|
|
|
|
spin_lock(&cmd->se_lun->lun_sep_lock);
|
2011-07-19 08:55:10 +00:00
|
|
|
if (cmd->se_lun->lun_sep) {
|
|
|
|
cmd->se_lun->lun_sep->sep_stats.rx_data_octets +=
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
cmd->data_length;
|
|
|
|
}
|
|
|
|
spin_unlock(&cmd->se_lun->lun_sep_lock);
|
|
|
|
/*
|
|
|
|
* Check if we need to send READ payload for BIDI-COMMAND
|
|
|
|
*/
|
2013-08-21 21:39:19 +00:00
|
|
|
if (cmd->se_cmd_flags & SCF_BIDI) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
spin_lock(&cmd->se_lun->lun_sep_lock);
|
2011-07-19 08:55:10 +00:00
|
|
|
if (cmd->se_lun->lun_sep) {
|
|
|
|
cmd->se_lun->lun_sep->sep_stats.tx_data_octets +=
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
cmd->data_length;
|
|
|
|
}
|
|
|
|
spin_unlock(&cmd->se_lun->lun_sep_lock);
|
2011-06-13 21:46:09 +00:00
|
|
|
ret = cmd->se_tfo->queue_data_in(cmd);
|
2011-10-26 06:57:41 +00:00
|
|
|
if (ret == -EAGAIN || ret == -ENOMEM)
|
2011-06-13 21:46:09 +00:00
|
|
|
goto queue_full;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
/* Fall through for DMA_TO_DEVICE */
|
|
|
|
case DMA_NONE:
|
2013-06-27 00:36:17 +00:00
|
|
|
trace_target_cmd_complete(cmd);
|
2011-06-13 21:46:09 +00:00
|
|
|
ret = cmd->se_tfo->queue_status(cmd);
|
2011-10-26 06:57:41 +00:00
|
|
|
if (ret == -EAGAIN || ret == -ENOMEM)
|
2011-06-13 21:46:09 +00:00
|
|
|
goto queue_full;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
transport_lun_remove_cmd(cmd);
|
|
|
|
transport_cmd_check_stop_to_fabric(cmd);
|
2011-06-13 21:46:09 +00:00
|
|
|
return;
|
|
|
|
|
|
|
|
queue_full:
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("Handling complete_ok QUEUE_FULL: se_cmd: %p,"
|
2011-06-13 21:46:09 +00:00
|
|
|
" data_direction: %d\n", cmd, cmd->data_direction);
|
2011-10-17 17:56:41 +00:00
|
|
|
cmd->t_state = TRANSPORT_COMPLETE_QF_OK;
|
|
|
|
transport_handle_queue_full(cmd, cmd->se_dev);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
static inline void transport_free_sgl(struct scatterlist *sgl, int nents)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2011-07-20 19:28:46 +00:00
|
|
|
struct scatterlist *sg;
|
|
|
|
int count;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
for_each_sg(sgl, sg, nents, count)
|
|
|
|
__free_page(sg_page(sg));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
kfree(sgl);
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2013-08-20 17:45:16 +00:00
|
|
|
static inline void transport_reset_sgl_orig(struct se_cmd *cmd)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* Check for saved t_data_sg that may be used for COMPARE_AND_WRITE
|
|
|
|
* emulation, and free + reset pointers if necessary..
|
|
|
|
*/
|
|
|
|
if (!cmd->t_data_sg_orig)
|
|
|
|
return;
|
|
|
|
|
|
|
|
kfree(cmd->t_data_sg);
|
|
|
|
cmd->t_data_sg = cmd->t_data_sg_orig;
|
|
|
|
cmd->t_data_sg_orig = NULL;
|
|
|
|
cmd->t_data_nents = cmd->t_data_nents_orig;
|
|
|
|
cmd->t_data_nents_orig = 0;
|
|
|
|
}
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
static inline void transport_free_pages(struct se_cmd *cmd)
|
|
|
|
{
|
2013-08-20 17:45:16 +00:00
|
|
|
if (cmd->se_cmd_flags & SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC) {
|
|
|
|
transport_reset_sgl_orig(cmd);
|
2011-06-08 17:36:43 +00:00
|
|
|
return;
|
2013-08-20 17:45:16 +00:00
|
|
|
}
|
|
|
|
transport_reset_sgl_orig(cmd);
|
2011-06-08 17:36:43 +00:00
|
|
|
|
|
|
|
transport_free_sgl(cmd->t_data_sg, cmd->t_data_nents);
|
2011-07-20 19:28:46 +00:00
|
|
|
cmd->t_data_sg = NULL;
|
|
|
|
cmd->t_data_nents = 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
transport_free_sgl(cmd->t_bidi_data_sg, cmd->t_bidi_data_nents);
|
2011-07-20 19:28:46 +00:00
|
|
|
cmd->t_bidi_data_sg = NULL;
|
|
|
|
cmd->t_bidi_data_nents = 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2011-11-14 17:30:30 +00:00
|
|
|
/**
|
|
|
|
* transport_release_cmd - free a command
|
|
|
|
* @cmd: command to free
|
|
|
|
*
|
|
|
|
* This routine unconditionally frees a command, and reference counting
|
|
|
|
* or list removal must be done in the caller.
|
|
|
|
*/
|
2013-05-31 07:46:11 +00:00
|
|
|
static int transport_release_cmd(struct se_cmd *cmd)
|
2011-11-14 17:30:30 +00:00
|
|
|
{
|
|
|
|
BUG_ON(!cmd->se_tfo);
|
|
|
|
|
2012-01-19 21:39:17 +00:00
|
|
|
if (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
|
2011-11-14 17:30:30 +00:00
|
|
|
core_tmr_release_req(cmd->se_tmr_req);
|
|
|
|
if (cmd->t_task_cdb != cmd->__t_task_cdb)
|
|
|
|
kfree(cmd->t_task_cdb);
|
|
|
|
/*
|
2011-11-12 08:32:17 +00:00
|
|
|
* If this cmd has been setup with target_get_sess_cmd(), drop
|
|
|
|
* the kref and call ->release_cmd() in kref callback.
|
2011-11-14 17:30:30 +00:00
|
|
|
*/
|
2013-06-06 09:06:14 +00:00
|
|
|
return target_put_sess_cmd(cmd->se_sess, cmd);
|
2011-11-14 17:30:30 +00:00
|
|
|
}
|
|
|
|
|
2011-09-13 21:08:32 +00:00
|
|
|
/**
|
|
|
|
* transport_put_cmd - release a reference to a command
|
|
|
|
* @cmd: command to release
|
|
|
|
*
|
|
|
|
* This routine releases our reference to the command and frees it if possible.
|
|
|
|
*/
|
2013-05-31 07:46:11 +00:00
|
|
|
static int transport_put_cmd(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
|
|
|
transport_free_pages(cmd);
|
2013-05-31 07:46:11 +00:00
|
|
|
return transport_release_cmd(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
void *transport_kmap_data_sg(struct se_cmd *cmd)
|
2011-07-20 19:13:28 +00:00
|
|
|
{
|
2011-07-20 19:28:46 +00:00
|
|
|
struct scatterlist *sg = cmd->t_data_sg;
|
2012-01-17 00:57:08 +00:00
|
|
|
struct page **pages;
|
|
|
|
int i;
|
2011-07-20 19:13:28 +00:00
|
|
|
|
|
|
|
/*
|
2011-07-20 19:28:46 +00:00
|
|
|
* We need to take into account a possible offset here for fabrics like
|
|
|
|
* tcm_loop who may be using a contig buffer from the SCSI midlayer for
|
|
|
|
* control CDBs passed as SGLs via transport_generic_map_mem_to_cmd()
|
2011-07-20 19:13:28 +00:00
|
|
|
*/
|
2012-01-17 00:57:08 +00:00
|
|
|
if (!cmd->t_data_nents)
|
|
|
|
return NULL;
|
2012-09-07 15:30:35 +00:00
|
|
|
|
|
|
|
BUG_ON(!sg);
|
|
|
|
if (cmd->t_data_nents == 1)
|
2012-01-17 00:57:08 +00:00
|
|
|
return kmap(sg_page(sg)) + sg->offset;
|
|
|
|
|
|
|
|
/* >1 page. use vmap */
|
|
|
|
pages = kmalloc(sizeof(*pages) * cmd->t_data_nents, GFP_KERNEL);
|
2012-11-06 20:24:09 +00:00
|
|
|
if (!pages)
|
2012-01-17 00:57:08 +00:00
|
|
|
return NULL;
|
|
|
|
|
|
|
|
/* convert sg[] to pages[] */
|
|
|
|
for_each_sg(cmd->t_data_sg, sg, cmd->t_data_nents, i) {
|
|
|
|
pages[i] = sg_page(sg);
|
|
|
|
}
|
|
|
|
|
|
|
|
cmd->t_data_vmap = vmap(pages, cmd->t_data_nents, VM_MAP, PAGE_KERNEL);
|
|
|
|
kfree(pages);
|
2012-11-06 20:24:09 +00:00
|
|
|
if (!cmd->t_data_vmap)
|
2012-01-17 00:57:08 +00:00
|
|
|
return NULL;
|
|
|
|
|
|
|
|
return cmd->t_data_vmap + cmd->t_data_sg[0].offset;
|
2011-07-20 19:13:28 +00:00
|
|
|
}
|
2012-01-17 00:57:08 +00:00
|
|
|
EXPORT_SYMBOL(transport_kmap_data_sg);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
2012-01-17 00:57:08 +00:00
|
|
|
void transport_kunmap_data_sg(struct se_cmd *cmd)
|
2011-07-20 19:13:28 +00:00
|
|
|
{
|
2012-02-09 20:18:06 +00:00
|
|
|
if (!cmd->t_data_nents) {
|
2012-01-17 00:57:08 +00:00
|
|
|
return;
|
2012-02-09 20:18:06 +00:00
|
|
|
} else if (cmd->t_data_nents == 1) {
|
2012-01-17 00:57:08 +00:00
|
|
|
kunmap(sg_page(cmd->t_data_sg));
|
2012-02-09 20:18:06 +00:00
|
|
|
return;
|
|
|
|
}
|
2012-01-17 00:57:08 +00:00
|
|
|
|
|
|
|
vunmap(cmd->t_data_vmap);
|
|
|
|
cmd->t_data_vmap = NULL;
|
2011-07-20 19:13:28 +00:00
|
|
|
}
|
2012-01-17 00:57:08 +00:00
|
|
|
EXPORT_SYMBOL(transport_kunmap_data_sg);
|
2011-07-20 19:13:28 +00:00
|
|
|
|
2013-08-22 18:58:43 +00:00
|
|
|
int
|
2013-08-25 22:44:03 +00:00
|
|
|
target_alloc_sgl(struct scatterlist **sgl, unsigned int *nents, u32 length,
|
|
|
|
bool zero_page)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2013-08-25 22:44:03 +00:00
|
|
|
struct scatterlist *sg;
|
2011-07-20 19:28:46 +00:00
|
|
|
struct page *page;
|
2013-08-25 22:44:03 +00:00
|
|
|
gfp_t zero_flag = (zero_page) ? __GFP_ZERO : 0;
|
|
|
|
unsigned int nent;
|
2011-07-20 19:28:46 +00:00
|
|
|
int i = 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2013-08-25 22:44:03 +00:00
|
|
|
nent = DIV_ROUND_UP(length, PAGE_SIZE);
|
|
|
|
sg = kmalloc(sizeof(struct scatterlist) * nent, GFP_KERNEL);
|
|
|
|
if (!sg)
|
2011-07-20 19:28:46 +00:00
|
|
|
return -ENOMEM;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2013-08-25 22:44:03 +00:00
|
|
|
sg_init_table(sg, nent);
|
2012-01-04 23:59:58 +00:00
|
|
|
|
2011-07-20 19:28:46 +00:00
|
|
|
while (length) {
|
|
|
|
u32 page_len = min_t(u32, length, PAGE_SIZE);
|
2012-01-04 23:59:58 +00:00
|
|
|
page = alloc_page(GFP_KERNEL | zero_flag);
|
2011-07-20 19:28:46 +00:00
|
|
|
if (!page)
|
|
|
|
goto out;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2013-08-25 22:44:03 +00:00
|
|
|
sg_set_page(&sg[i], page, page_len, 0);
|
2011-07-20 19:28:46 +00:00
|
|
|
length -= page_len;
|
|
|
|
i++;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2013-08-25 22:44:03 +00:00
|
|
|
*sgl = sg;
|
|
|
|
*nents = nent;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return 0;
|
|
|
|
|
2011-07-20 19:28:46 +00:00
|
|
|
out:
|
2012-08-14 23:06:43 +00:00
|
|
|
while (i > 0) {
|
2011-07-20 19:28:46 +00:00
|
|
|
i--;
|
2013-08-25 22:44:03 +00:00
|
|
|
__free_page(sg_page(&sg[i]));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2013-08-25 22:44:03 +00:00
|
|
|
kfree(sg);
|
2011-07-20 19:28:46 +00:00
|
|
|
return -ENOMEM;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2011-10-18 10:57:01 +00:00
|
|
|
/*
|
2012-04-03 22:51:21 +00:00
|
|
|
* Allocate any required resources to execute the command. For writes we
|
|
|
|
* might not have the payload yet, so notify the fabric via a call to
|
|
|
|
* ->write_pending instead. Otherwise place it on the execution queue.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2012-11-06 20:24:09 +00:00
|
|
|
sense_reason_t
|
|
|
|
transport_generic_new_cmd(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine is the TCM fabric module has already allocated physical
|
|
|
|
* memory, and is directly calling transport_generic_map_mem_to_cmd()
|
2011-07-20 19:28:46 +00:00
|
|
|
* beforehand.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2011-07-20 19:28:46 +00:00
|
|
|
if (!(cmd->se_cmd_flags & SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC) &&
|
|
|
|
cmd->data_length) {
|
2013-08-25 22:44:03 +00:00
|
|
|
bool zero_flag = !(cmd->se_cmd_flags & SCF_SCSI_DATA_CDB);
|
|
|
|
|
2013-08-25 23:10:57 +00:00
|
|
|
if ((cmd->se_cmd_flags & SCF_BIDI) ||
|
|
|
|
(cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE)) {
|
|
|
|
u32 bidi_length;
|
|
|
|
|
|
|
|
if (cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE)
|
|
|
|
bidi_length = cmd->t_task_nolb *
|
|
|
|
cmd->se_dev->dev_attrib.block_size;
|
|
|
|
else
|
|
|
|
bidi_length = cmd->data_length;
|
|
|
|
|
|
|
|
ret = target_alloc_sgl(&cmd->t_bidi_data_sg,
|
|
|
|
&cmd->t_bidi_data_nents,
|
|
|
|
bidi_length, zero_flag);
|
|
|
|
if (ret < 0)
|
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
|
|
|
}
|
|
|
|
|
2013-08-25 22:44:03 +00:00
|
|
|
ret = target_alloc_sgl(&cmd->t_data_sg, &cmd->t_data_nents,
|
|
|
|
cmd->data_length, zero_flag);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
if (ret < 0)
|
2012-11-06 20:24:09 +00:00
|
|
|
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
/*
|
2012-07-08 19:58:41 +00:00
|
|
|
* If this command is not a write we can execute it right here,
|
|
|
|
* for write buffers we need to notify the fabric driver first
|
|
|
|
* and let it call back once the write buffers are ready.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2012-05-20 18:34:44 +00:00
|
|
|
target_add_to_state_list(cmd);
|
2012-07-08 19:58:41 +00:00
|
|
|
if (cmd->data_direction != DMA_TO_DEVICE) {
|
|
|
|
target_execute_cmd(cmd);
|
|
|
|
return 0;
|
|
|
|
}
|
2013-06-06 08:35:18 +00:00
|
|
|
transport_cmd_check_stop(cmd, false, true);
|
2012-07-08 19:58:41 +00:00
|
|
|
|
|
|
|
ret = cmd->se_tfo->write_pending(cmd);
|
|
|
|
if (ret == -EAGAIN || ret == -ENOMEM)
|
|
|
|
goto queue_full;
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
/* fabric drivers should only return -EAGAIN or -ENOMEM as error */
|
|
|
|
WARN_ON(ret);
|
|
|
|
|
2012-11-06 23:43:53 +00:00
|
|
|
return (!ret) ? 0 : TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
|
2011-10-18 10:57:01 +00:00
|
|
|
|
2012-07-08 19:58:41 +00:00
|
|
|
queue_full:
|
|
|
|
pr_debug("Handling write_pending QUEUE__FULL: se_cmd: %p\n", cmd);
|
|
|
|
cmd->t_state = TRANSPORT_COMPLETE_QF_WP;
|
|
|
|
transport_handle_queue_full(cmd, cmd->se_dev);
|
|
|
|
return 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2011-05-03 00:12:10 +00:00
|
|
|
EXPORT_SYMBOL(transport_generic_new_cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-10-17 17:56:41 +00:00
|
|
|
static void transport_write_pending_qf(struct se_cmd *cmd)
|
2011-06-13 21:46:09 +00:00
|
|
|
{
|
2011-10-26 06:57:41 +00:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = cmd->se_tfo->write_pending(cmd);
|
|
|
|
if (ret == -EAGAIN || ret == -ENOMEM) {
|
2011-10-17 17:56:41 +00:00
|
|
|
pr_debug("Handling write_pending QUEUE__FULL: se_cmd: %p\n",
|
|
|
|
cmd);
|
|
|
|
transport_handle_queue_full(cmd, cmd->se_dev);
|
|
|
|
}
|
2011-06-13 21:46:09 +00:00
|
|
|
}
|
|
|
|
|
2013-05-31 07:46:11 +00:00
|
|
|
int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2013-08-31 22:12:01 +00:00
|
|
|
unsigned long flags;
|
2013-05-31 07:46:11 +00:00
|
|
|
int ret = 0;
|
|
|
|
|
2011-10-09 08:00:58 +00:00
|
|
|
if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD)) {
|
2012-01-19 21:39:17 +00:00
|
|
|
if (wait_for_tasks && (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB))
|
2011-10-09 08:00:58 +00:00
|
|
|
transport_wait_for_tasks(cmd);
|
|
|
|
|
2013-05-31 07:46:11 +00:00
|
|
|
ret = transport_release_cmd(cmd);
|
2011-10-09 08:00:58 +00:00
|
|
|
} else {
|
|
|
|
if (wait_for_tasks)
|
|
|
|
transport_wait_for_tasks(cmd);
|
2013-08-31 22:12:01 +00:00
|
|
|
/*
|
|
|
|
* Handle WRITE failure case where transport_generic_new_cmd()
|
|
|
|
* has already added se_cmd to state_list, but fabric has
|
|
|
|
* failed command before I/O submission.
|
|
|
|
*/
|
|
|
|
if (cmd->state_active) {
|
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
|
|
|
target_remove_from_state_list(cmd);
|
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
|
|
|
}
|
2011-10-09 08:00:58 +00:00
|
|
|
|
2011-09-13 21:09:01 +00:00
|
|
|
if (cmd->se_lun)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
transport_lun_remove_cmd(cmd);
|
|
|
|
|
2013-05-31 07:46:11 +00:00
|
|
|
ret = transport_put_cmd(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2013-05-31 07:46:11 +00:00
|
|
|
return ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_generic_free_cmd);
|
|
|
|
|
2011-11-03 04:52:08 +00:00
|
|
|
/* target_get_sess_cmd - Add command to active ->sess_cmd_list
|
|
|
|
* @se_sess: session to reference
|
|
|
|
* @se_cmd: command descriptor to add
|
2011-11-19 04:36:22 +00:00
|
|
|
* @ack_kref: Signal that fabric will perform an ack target_put_sess_cmd()
|
2011-11-03 04:52:08 +00:00
|
|
|
*/
|
2013-03-22 05:54:28 +00:00
|
|
|
int target_get_sess_cmd(struct se_session *se_sess, struct se_cmd *se_cmd,
|
target: Check sess_tearing_down in target_get_sess_cmd()
Target core code assumes that target_splice_sess_cmd_list() has set
sess_tearing_down and moved the list of pending commands to
sess_wait_list, no more commands will be added to the session; if any
are added, nothing keeps the se_session from being freed while the
command is still in flight, which e.g. leads to use-after-free of
se_cmd->se_sess in target_release_cmd_kref().
To enforce this invariant, put a check of sess_tearing_down inside of
sess_cmd_lock in target_get_sess_cmd(); any checks before this are
racy and can lead to the use-after-free described above. For example,
the qla_target check in qlt_do_work() checks sess_tearing_down from
work thread context but then drops all locks before calling
target_submit_cmd() (as it must, since that is a sleeping function).
However, since no locks are held, anything can happen with respect to
the session it has looked up -- although it does correctly get
sess_kref within its lock, so the memory won't be freed while
target_submit_cmd() is actually running, nothing stops eg an ACL from
being dropped and calling ->shutdown_session() (which calls into
target_splice_sess_cmd_list()) before we get to target_get_sess_cmd().
Once this happens, the se_session memory can be freed as soon as
target_submit_cmd() returns and qlt_do_work() drops its reference,
even though we've just added a command to sess_cmd_list.
To prevent this use-after-free, check sess_tearing_down inside of
sess_cmd_lock right before target_get_sess_cmd() adds a command to
sess_cmd_list; this is synchronized with target_splice_sess_cmd_list()
so that every command is either waited for or not added to the queue.
(nab: Keep target_submit_cmd() returning void for now..)
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16 18:04:40 +00:00
|
|
|
bool ack_kref)
|
2011-11-03 04:52:08 +00:00
|
|
|
{
|
|
|
|
unsigned long flags;
|
target: Check sess_tearing_down in target_get_sess_cmd()
Target core code assumes that target_splice_sess_cmd_list() has set
sess_tearing_down and moved the list of pending commands to
sess_wait_list, no more commands will be added to the session; if any
are added, nothing keeps the se_session from being freed while the
command is still in flight, which e.g. leads to use-after-free of
se_cmd->se_sess in target_release_cmd_kref().
To enforce this invariant, put a check of sess_tearing_down inside of
sess_cmd_lock in target_get_sess_cmd(); any checks before this are
racy and can lead to the use-after-free described above. For example,
the qla_target check in qlt_do_work() checks sess_tearing_down from
work thread context but then drops all locks before calling
target_submit_cmd() (as it must, since that is a sleeping function).
However, since no locks are held, anything can happen with respect to
the session it has looked up -- although it does correctly get
sess_kref within its lock, so the memory won't be freed while
target_submit_cmd() is actually running, nothing stops eg an ACL from
being dropped and calling ->shutdown_session() (which calls into
target_splice_sess_cmd_list()) before we get to target_get_sess_cmd().
Once this happens, the se_session memory can be freed as soon as
target_submit_cmd() returns and qlt_do_work() drops its reference,
even though we've just added a command to sess_cmd_list.
To prevent this use-after-free, check sess_tearing_down inside of
sess_cmd_lock right before target_get_sess_cmd() adds a command to
sess_cmd_list; this is synchronized with target_splice_sess_cmd_list()
so that every command is either waited for or not added to the queue.
(nab: Keep target_submit_cmd() returning void for now..)
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16 18:04:40 +00:00
|
|
|
int ret = 0;
|
2011-11-03 04:52:08 +00:00
|
|
|
|
2011-11-12 08:32:17 +00:00
|
|
|
kref_init(&se_cmd->cmd_kref);
|
2011-11-19 04:36:22 +00:00
|
|
|
/*
|
|
|
|
* Add a second kref if the fabric caller is expecting to handle
|
|
|
|
* fabric acknowledgement that requires two target_put_sess_cmd()
|
|
|
|
* invocations before se_cmd descriptor release.
|
|
|
|
*/
|
2012-02-13 09:07:22 +00:00
|
|
|
if (ack_kref == true) {
|
2011-11-19 04:36:22 +00:00
|
|
|
kref_get(&se_cmd->cmd_kref);
|
2012-02-13 09:07:22 +00:00
|
|
|
se_cmd->se_cmd_flags |= SCF_ACK_KREF;
|
|
|
|
}
|
2011-11-12 08:32:17 +00:00
|
|
|
|
2011-11-03 04:52:08 +00:00
|
|
|
spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
|
target: Check sess_tearing_down in target_get_sess_cmd()
Target core code assumes that target_splice_sess_cmd_list() has set
sess_tearing_down and moved the list of pending commands to
sess_wait_list, no more commands will be added to the session; if any
are added, nothing keeps the se_session from being freed while the
command is still in flight, which e.g. leads to use-after-free of
se_cmd->se_sess in target_release_cmd_kref().
To enforce this invariant, put a check of sess_tearing_down inside of
sess_cmd_lock in target_get_sess_cmd(); any checks before this are
racy and can lead to the use-after-free described above. For example,
the qla_target check in qlt_do_work() checks sess_tearing_down from
work thread context but then drops all locks before calling
target_submit_cmd() (as it must, since that is a sleeping function).
However, since no locks are held, anything can happen with respect to
the session it has looked up -- although it does correctly get
sess_kref within its lock, so the memory won't be freed while
target_submit_cmd() is actually running, nothing stops eg an ACL from
being dropped and calling ->shutdown_session() (which calls into
target_splice_sess_cmd_list()) before we get to target_get_sess_cmd().
Once this happens, the se_session memory can be freed as soon as
target_submit_cmd() returns and qlt_do_work() drops its reference,
even though we've just added a command to sess_cmd_list.
To prevent this use-after-free, check sess_tearing_down inside of
sess_cmd_lock right before target_get_sess_cmd() adds a command to
sess_cmd_list; this is synchronized with target_splice_sess_cmd_list()
so that every command is either waited for or not added to the queue.
(nab: Keep target_submit_cmd() returning void for now..)
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16 18:04:40 +00:00
|
|
|
if (se_sess->sess_tearing_down) {
|
|
|
|
ret = -ESHUTDOWN;
|
|
|
|
goto out;
|
|
|
|
}
|
2011-11-03 04:52:08 +00:00
|
|
|
list_add_tail(&se_cmd->se_cmd_list, &se_sess->sess_cmd_list);
|
target: Check sess_tearing_down in target_get_sess_cmd()
Target core code assumes that target_splice_sess_cmd_list() has set
sess_tearing_down and moved the list of pending commands to
sess_wait_list, no more commands will be added to the session; if any
are added, nothing keeps the se_session from being freed while the
command is still in flight, which e.g. leads to use-after-free of
se_cmd->se_sess in target_release_cmd_kref().
To enforce this invariant, put a check of sess_tearing_down inside of
sess_cmd_lock in target_get_sess_cmd(); any checks before this are
racy and can lead to the use-after-free described above. For example,
the qla_target check in qlt_do_work() checks sess_tearing_down from
work thread context but then drops all locks before calling
target_submit_cmd() (as it must, since that is a sleeping function).
However, since no locks are held, anything can happen with respect to
the session it has looked up -- although it does correctly get
sess_kref within its lock, so the memory won't be freed while
target_submit_cmd() is actually running, nothing stops eg an ACL from
being dropped and calling ->shutdown_session() (which calls into
target_splice_sess_cmd_list()) before we get to target_get_sess_cmd().
Once this happens, the se_session memory can be freed as soon as
target_submit_cmd() returns and qlt_do_work() drops its reference,
even though we've just added a command to sess_cmd_list.
To prevent this use-after-free, check sess_tearing_down inside of
sess_cmd_lock right before target_get_sess_cmd() adds a command to
sess_cmd_list; this is synchronized with target_splice_sess_cmd_list()
so that every command is either waited for or not added to the queue.
(nab: Keep target_submit_cmd() returning void for now..)
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16 18:04:40 +00:00
|
|
|
out:
|
2011-11-03 04:52:08 +00:00
|
|
|
spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
|
target: Check sess_tearing_down in target_get_sess_cmd()
Target core code assumes that target_splice_sess_cmd_list() has set
sess_tearing_down and moved the list of pending commands to
sess_wait_list, no more commands will be added to the session; if any
are added, nothing keeps the se_session from being freed while the
command is still in flight, which e.g. leads to use-after-free of
se_cmd->se_sess in target_release_cmd_kref().
To enforce this invariant, put a check of sess_tearing_down inside of
sess_cmd_lock in target_get_sess_cmd(); any checks before this are
racy and can lead to the use-after-free described above. For example,
the qla_target check in qlt_do_work() checks sess_tearing_down from
work thread context but then drops all locks before calling
target_submit_cmd() (as it must, since that is a sleeping function).
However, since no locks are held, anything can happen with respect to
the session it has looked up -- although it does correctly get
sess_kref within its lock, so the memory won't be freed while
target_submit_cmd() is actually running, nothing stops eg an ACL from
being dropped and calling ->shutdown_session() (which calls into
target_splice_sess_cmd_list()) before we get to target_get_sess_cmd().
Once this happens, the se_session memory can be freed as soon as
target_submit_cmd() returns and qlt_do_work() drops its reference,
even though we've just added a command to sess_cmd_list.
To prevent this use-after-free, check sess_tearing_down inside of
sess_cmd_lock right before target_get_sess_cmd() adds a command to
sess_cmd_list; this is synchronized with target_splice_sess_cmd_list()
so that every command is either waited for or not added to the queue.
(nab: Keep target_submit_cmd() returning void for now..)
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16 18:04:40 +00:00
|
|
|
return ret;
|
2011-11-03 04:52:08 +00:00
|
|
|
}
|
2013-03-22 05:54:28 +00:00
|
|
|
EXPORT_SYMBOL(target_get_sess_cmd);
|
2011-11-03 04:52:08 +00:00
|
|
|
|
2011-11-12 08:32:17 +00:00
|
|
|
static void target_release_cmd_kref(struct kref *kref)
|
2011-11-03 04:52:08 +00:00
|
|
|
{
|
2011-11-12 08:32:17 +00:00
|
|
|
struct se_cmd *se_cmd = container_of(kref, struct se_cmd, cmd_kref);
|
|
|
|
struct se_session *se_sess = se_cmd->se_sess;
|
2011-11-03 04:52:08 +00:00
|
|
|
|
|
|
|
if (list_empty(&se_cmd->se_cmd_list)) {
|
2013-05-13 20:30:06 +00:00
|
|
|
spin_unlock(&se_sess->sess_cmd_lock);
|
2012-02-13 10:35:01 +00:00
|
|
|
se_cmd->se_tfo->release_cmd(se_cmd);
|
2011-11-12 08:32:17 +00:00
|
|
|
return;
|
2011-11-03 04:52:08 +00:00
|
|
|
}
|
|
|
|
if (se_sess->sess_tearing_down && se_cmd->cmd_wait_set) {
|
2013-05-13 20:30:06 +00:00
|
|
|
spin_unlock(&se_sess->sess_cmd_lock);
|
2011-11-03 04:52:08 +00:00
|
|
|
complete(&se_cmd->cmd_wait_comp);
|
2011-11-12 08:32:17 +00:00
|
|
|
return;
|
2011-11-03 04:52:08 +00:00
|
|
|
}
|
|
|
|
list_del(&se_cmd->se_cmd_list);
|
2013-05-13 20:30:06 +00:00
|
|
|
spin_unlock(&se_sess->sess_cmd_lock);
|
2011-11-03 04:52:08 +00:00
|
|
|
|
2011-11-12 08:32:17 +00:00
|
|
|
se_cmd->se_tfo->release_cmd(se_cmd);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* target_put_sess_cmd - Check for active I/O shutdown via kref_put
|
|
|
|
* @se_sess: session to reference
|
|
|
|
* @se_cmd: command descriptor to drop
|
|
|
|
*/
|
|
|
|
int target_put_sess_cmd(struct se_session *se_sess, struct se_cmd *se_cmd)
|
|
|
|
{
|
2013-05-13 20:30:06 +00:00
|
|
|
return kref_put_spinlock_irqsave(&se_cmd->cmd_kref, target_release_cmd_kref,
|
|
|
|
&se_sess->sess_cmd_lock);
|
2011-11-03 04:52:08 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(target_put_sess_cmd);
|
|
|
|
|
2012-07-16 18:04:42 +00:00
|
|
|
/* target_sess_cmd_list_set_waiting - Flag all commands in
|
|
|
|
* sess_cmd_list to complete cmd_wait_comp. Set
|
|
|
|
* sess_tearing_down so no more commands are queued.
|
|
|
|
* @se_sess: session to flag
|
2011-11-03 04:52:08 +00:00
|
|
|
*/
|
2012-07-16 18:04:42 +00:00
|
|
|
void target_sess_cmd_list_set_waiting(struct se_session *se_sess)
|
2011-11-03 04:52:08 +00:00
|
|
|
{
|
|
|
|
struct se_cmd *se_cmd;
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
|
2013-05-15 07:52:44 +00:00
|
|
|
if (se_sess->sess_tearing_down) {
|
|
|
|
spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
|
|
|
|
return;
|
|
|
|
}
|
2012-07-16 18:04:42 +00:00
|
|
|
se_sess->sess_tearing_down = 1;
|
2013-05-15 07:52:44 +00:00
|
|
|
list_splice_init(&se_sess->sess_cmd_list, &se_sess->sess_wait_list);
|
2011-11-03 04:52:08 +00:00
|
|
|
|
2013-05-15 07:52:44 +00:00
|
|
|
list_for_each_entry(se_cmd, &se_sess->sess_wait_list, se_cmd_list)
|
2011-11-03 04:52:08 +00:00
|
|
|
se_cmd->cmd_wait_set = 1;
|
|
|
|
|
|
|
|
spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
|
|
|
|
}
|
2012-07-16 18:04:42 +00:00
|
|
|
EXPORT_SYMBOL(target_sess_cmd_list_set_waiting);
|
2011-11-03 04:52:08 +00:00
|
|
|
|
|
|
|
/* target_wait_for_sess_cmds - Wait for outstanding descriptors
|
|
|
|
* @se_sess: session to wait for active I/O
|
|
|
|
*/
|
2013-05-15 07:44:07 +00:00
|
|
|
void target_wait_for_sess_cmds(struct se_session *se_sess)
|
2011-11-03 04:52:08 +00:00
|
|
|
{
|
|
|
|
struct se_cmd *se_cmd, *tmp_cmd;
|
2013-05-15 07:52:44 +00:00
|
|
|
unsigned long flags;
|
2011-11-03 04:52:08 +00:00
|
|
|
|
|
|
|
list_for_each_entry_safe(se_cmd, tmp_cmd,
|
2013-05-15 07:52:44 +00:00
|
|
|
&se_sess->sess_wait_list, se_cmd_list) {
|
2011-11-03 04:52:08 +00:00
|
|
|
list_del(&se_cmd->se_cmd_list);
|
|
|
|
|
|
|
|
pr_debug("Waiting for se_cmd: %p t_state: %d, fabric state:"
|
|
|
|
" %d\n", se_cmd, se_cmd->t_state,
|
|
|
|
se_cmd->se_tfo->get_cmd_state(se_cmd));
|
|
|
|
|
2013-05-15 07:44:07 +00:00
|
|
|
wait_for_completion(&se_cmd->cmd_wait_comp);
|
|
|
|
pr_debug("After cmd_wait_comp: se_cmd: %p t_state: %d"
|
|
|
|
" fabric state: %d\n", se_cmd, se_cmd->t_state,
|
|
|
|
se_cmd->se_tfo->get_cmd_state(se_cmd));
|
2011-11-03 04:52:08 +00:00
|
|
|
|
|
|
|
se_cmd->se_tfo->release_cmd(se_cmd);
|
|
|
|
}
|
2013-05-15 07:52:44 +00:00
|
|
|
|
|
|
|
spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
|
|
|
|
WARN_ON(!list_empty(&se_sess->sess_cmd_list));
|
|
|
|
spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
|
|
|
|
|
2011-11-03 04:52:08 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(target_wait_for_sess_cmds);
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* transport_lun_wait_for_tasks():
|
|
|
|
*
|
|
|
|
* Called from ConfigFS context to stop the passed struct se_cmd to allow
|
|
|
|
* an struct se_lun to be successfully shutdown.
|
|
|
|
*/
|
|
|
|
static int transport_lun_wait_for_tasks(struct se_cmd *cmd, struct se_lun *lun)
|
|
|
|
{
|
|
|
|
unsigned long flags;
|
2012-04-24 04:25:05 +00:00
|
|
|
int ret = 0;
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* If the frontend has already requested this struct se_cmd to
|
|
|
|
* be stopped, we can safely ignore this struct se_cmd.
|
|
|
|
*/
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
2011-12-21 19:13:47 +00:00
|
|
|
if (cmd->transport_state & CMD_T_STOP) {
|
|
|
|
cmd->transport_state &= ~CMD_T_LUN_STOP;
|
|
|
|
|
|
|
|
pr_debug("ConfigFS ITT[0x%08x] - CMD_T_STOP, skipping\n",
|
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
2013-06-06 08:35:18 +00:00
|
|
|
transport_cmd_check_stop(cmd, false, false);
|
2011-07-19 08:55:10 +00:00
|
|
|
return -EPERM;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state |= CMD_T_LUN_FE_STOP;
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
// XXX: audit task_flags checks.
|
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
|
|
|
if ((cmd->transport_state & CMD_T_BUSY) &&
|
|
|
|
(cmd->transport_state & CMD_T_SENT)) {
|
|
|
|
if (!target_stop_cmd(cmd, &flags))
|
|
|
|
ret++;
|
|
|
|
}
|
2012-05-20 18:34:44 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-04-24 04:25:04 +00:00
|
|
|
pr_debug("ConfigFS: cmd: %p stop tasks ret:"
|
|
|
|
" %d\n", cmd, ret);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
if (!ret) {
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("ConfigFS: ITT[0x%08x] - stopping cmd....\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
2011-05-03 00:12:10 +00:00
|
|
|
wait_for_completion(&cmd->transport_lun_stop_comp);
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("ConfigFS: ITT[0x%08x] - stopped cmd....\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __transport_clear_lun_from_sessions(struct se_lun *lun)
|
|
|
|
{
|
|
|
|
struct se_cmd *cmd = NULL;
|
|
|
|
unsigned long lun_flags, cmd_flags;
|
|
|
|
/*
|
|
|
|
* Do exception processing and return CHECK_CONDITION status to the
|
|
|
|
* Initiator Port.
|
|
|
|
*/
|
|
|
|
spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
|
2011-07-19 10:26:37 +00:00
|
|
|
while (!list_empty(&lun->lun_cmd_list)) {
|
|
|
|
cmd = list_first_entry(&lun->lun_cmd_list,
|
|
|
|
struct se_cmd, se_lun_node);
|
2011-12-21 19:14:05 +00:00
|
|
|
list_del_init(&cmd->se_lun_node);
|
2011-07-19 10:26:37 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_lock(&cmd->t_state_lock);
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("SE_LUN[%d] - Setting cmd->transport"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
"_lun_stop for ITT: 0x%08x\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_lun->unpacked_lun,
|
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state |= CMD_T_LUN_STOP;
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock(&cmd->t_state_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
spin_unlock_irqrestore(&lun->lun_cmd_lock, lun_flags);
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!cmd->se_lun) {
|
|
|
|
pr_err("ITT: 0x%08x, [i,t]_state: %u/%u\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->get_task_tag(cmd),
|
|
|
|
cmd->se_tfo->get_cmd_state(cmd), cmd->t_state);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* If the Storage engine still owns the iscsi_cmd_t, determine
|
|
|
|
* and/or stop its context.
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("SE_LUN[%d] - ITT: 0x%08x before transport"
|
2011-07-19 08:55:10 +00:00
|
|
|
"_lun_wait_for_tasks()\n", cmd->se_lun->unpacked_lun,
|
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-07-19 08:55:10 +00:00
|
|
|
if (transport_lun_wait_for_tasks(cmd, cmd->se_lun) < 0) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("SE_LUN[%d] - ITT: 0x%08x after transport_lun"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
"_wait_for_tasks(): SUCCESS\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_lun->unpacked_lun,
|
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, cmd_flags);
|
2011-12-21 19:13:47 +00:00
|
|
|
if (!(cmd->transport_state & CMD_T_DEV_ACTIVE)) {
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, cmd_flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
goto check_cond;
|
|
|
|
}
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state &= ~CMD_T_DEV_ACTIVE;
|
2012-04-24 04:25:05 +00:00
|
|
|
target_remove_from_state_list(cmd);
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, cmd_flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* The Storage engine stopped this struct se_cmd before it was
|
|
|
|
* send to the fabric frontend for delivery back to the
|
|
|
|
* Initiator Node. Return this SCSI CDB back with an
|
|
|
|
* CHECK_CONDITION status.
|
|
|
|
*/
|
|
|
|
check_cond:
|
|
|
|
transport_send_check_condition_and_sense(cmd,
|
|
|
|
TCM_NON_EXISTENT_LUN, 0);
|
|
|
|
/*
|
|
|
|
* If the fabric frontend is waiting for this iscsi_cmd_t to
|
|
|
|
* be released, notify the waiting thread now that LU has
|
|
|
|
* finished accessing it.
|
|
|
|
*/
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, cmd_flags);
|
2011-12-21 19:13:47 +00:00
|
|
|
if (cmd->transport_state & CMD_T_LUN_FE_STOP) {
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("SE_LUN[%d] - Detected FE stop for"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" struct se_cmd: %p ITT: 0x%08x\n",
|
|
|
|
lun->unpacked_lun,
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd, cmd->se_tfo->get_task_tag(cmd));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
cmd_flags);
|
2013-06-06 08:35:18 +00:00
|
|
|
transport_cmd_check_stop(cmd, false, false);
|
2011-05-03 00:12:10 +00:00
|
|
|
complete(&cmd->transport_lun_fe_stop_comp);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
|
|
|
|
continue;
|
|
|
|
}
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("SE_LUN[%d] - ITT: 0x%08x finished processing\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
lun->unpacked_lun, cmd->se_tfo->get_task_tag(cmd));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, cmd_flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
|
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(&lun->lun_cmd_lock, lun_flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int transport_clear_lun_thread(void *p)
|
|
|
|
{
|
target: remove useless casts
A reader should spend an extra moment whenever noticing a cast,
because either something special is going on that deserves extra
attention or, as is all too often the case, the code is wrong.
These casts, afaics, have all been useless. They cast a foo* to a
foo*, cast a void* to the assigned type, cast a foo* to void*, before
assigning it to a void* variable, etc.
In a few cases I also removed an additional &...[0], which is equally
useless.
Lastly I added three FIXMEs where, to the best of my judgement, the
code appears to have a bug. It would be good if someone could check
these.
Signed-off-by: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2011-11-24 01:05:51 +00:00
|
|
|
struct se_lun *lun = p;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
__transport_clear_lun_from_sessions(lun);
|
|
|
|
complete(&lun->lun_shutdown_comp);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int transport_clear_lun_from_sessions(struct se_lun *lun)
|
|
|
|
{
|
|
|
|
struct task_struct *kt;
|
|
|
|
|
2011-07-19 10:26:37 +00:00
|
|
|
kt = kthread_run(transport_clear_lun_thread, lun,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
"tcm_cl_%u", lun->unpacked_lun);
|
|
|
|
if (IS_ERR(kt)) {
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_err("Unable to start clear_lun thread\n");
|
2011-07-19 08:55:10 +00:00
|
|
|
return PTR_ERR(kt);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
wait_for_completion(&lun->lun_shutdown_comp);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-10-09 08:00:58 +00:00
|
|
|
/**
|
|
|
|
* transport_wait_for_tasks - wait for completion to occur
|
|
|
|
* @cmd: command to wait
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*
|
2011-10-09 08:00:58 +00:00
|
|
|
* Called from frontend fabric context to wait for storage engine
|
|
|
|
* to pause and/or release frontend generated struct se_cmd.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2011-11-03 04:52:08 +00:00
|
|
|
bool transport_wait_for_tasks(struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
2012-01-19 21:39:17 +00:00
|
|
|
if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD) &&
|
|
|
|
!(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
|
2011-10-09 08:00:58 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
2011-11-03 04:52:08 +00:00
|
|
|
return false;
|
2011-10-09 08:00:58 +00:00
|
|
|
}
|
2012-05-20 15:59:10 +00:00
|
|
|
|
2012-01-19 21:39:17 +00:00
|
|
|
if (!(cmd->se_cmd_flags & SCF_SUPPORTED_SAM_OPCODE) &&
|
|
|
|
!(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
|
2011-10-09 08:00:58 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
2011-11-03 04:52:08 +00:00
|
|
|
return false;
|
2011-10-09 08:00:58 +00:00
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* If we are already stopped due to an external event (ie: LUN shutdown)
|
|
|
|
* sleep until the connection can have the passed struct se_cmd back.
|
2011-05-03 00:12:10 +00:00
|
|
|
* The cmd->transport_lun_stopped_sem will be upped by
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
* transport_clear_lun_from_sessions() once the ConfigFS context caller
|
|
|
|
* has completed its operation on the struct se_cmd.
|
|
|
|
*/
|
2011-12-21 19:13:47 +00:00
|
|
|
if (cmd->transport_state & CMD_T_LUN_STOP) {
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("wait_for_tasks: Stopping"
|
2011-07-19 08:55:10 +00:00
|
|
|
" wait_for_completion(&cmd->t_tasktransport_lun_fe"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
"_stop_comp); for ITT: 0x%08x\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* There is a special case for WRITES where a FE exception +
|
|
|
|
* LUN shutdown means ConfigFS context is still sleeping on
|
|
|
|
* transport_lun_stop_comp in transport_lun_wait_for_tasks().
|
|
|
|
* We go ahead and up transport_lun_stop_comp just to be sure
|
|
|
|
* here.
|
|
|
|
*/
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
|
|
|
complete(&cmd->transport_lun_stop_comp);
|
|
|
|
wait_for_completion(&cmd->transport_lun_fe_stop_comp);
|
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
target_remove_from_state_list(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* At this point, the frontend who was the originator of this
|
|
|
|
* struct se_cmd, now owns the structure and can be released through
|
|
|
|
* normal means below.
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("wait_for_tasks: Stopped"
|
2011-07-19 08:55:10 +00:00
|
|
|
" wait_for_completion(&cmd->t_tasktransport_lun_fe_"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
"stop_comp); for ITT: 0x%08x\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state &= ~CMD_T_LUN_STOP;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2011-12-21 19:13:47 +00:00
|
|
|
|
2012-02-13 10:38:14 +00:00
|
|
|
if (!(cmd->transport_state & CMD_T_ACTIVE)) {
|
2011-10-09 08:00:58 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
2011-11-03 04:52:08 +00:00
|
|
|
return false;
|
2011-10-09 08:00:58 +00:00
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state |= CMD_T_STOP;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("wait_for_tasks: Stopping %p ITT: 0x%08x"
|
2011-12-21 19:13:47 +00:00
|
|
|
" i_state: %d, t_state: %d, CMD_T_STOP\n",
|
2011-10-17 17:56:51 +00:00
|
|
|
cmd, cmd->se_tfo->get_task_tag(cmd),
|
|
|
|
cmd->se_tfo->get_cmd_state(cmd), cmd->t_state);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
wait_for_completion(&cmd->t_transport_stop_comp);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state &= ~(CMD_T_ACTIVE | CMD_T_STOP);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-08-16 13:43:13 +00:00
|
|
|
pr_debug("wait_for_tasks: Stopped wait_for_completion("
|
2011-05-03 00:12:10 +00:00
|
|
|
"&cmd->t_transport_stop_comp) for ITT: 0x%08x\n",
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-10-09 08:00:58 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
2011-11-03 04:52:08 +00:00
|
|
|
|
|
|
|
return true;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
2011-10-09 08:00:58 +00:00
|
|
|
EXPORT_SYMBOL(transport_wait_for_tasks);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
static int transport_get_sense_codes(
|
|
|
|
struct se_cmd *cmd,
|
|
|
|
u8 *asc,
|
|
|
|
u8 *ascq)
|
|
|
|
{
|
|
|
|
*asc = cmd->scsi_asc;
|
|
|
|
*ascq = cmd->scsi_ascq;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-11-06 20:24:09 +00:00
|
|
|
int
|
|
|
|
transport_send_check_condition_and_sense(struct se_cmd *cmd,
|
|
|
|
sense_reason_t reason, int from_transport)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
|
|
|
unsigned char *buffer = cmd->sense_buffer;
|
|
|
|
unsigned long flags;
|
|
|
|
u8 asc = 0, ascq = 0;
|
|
|
|
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
if (cmd->se_cmd_flags & SCF_SENT_CHECK_CONDITION) {
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
cmd->se_cmd_flags |= SCF_SENT_CHECK_CONDITION;
|
2011-05-03 00:12:10 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
if (!reason && from_transport)
|
|
|
|
goto after_reason;
|
|
|
|
|
|
|
|
if (!from_transport)
|
|
|
|
cmd->se_cmd_flags |= SCF_EMULATED_TASK_SENSE;
|
2012-08-15 21:35:25 +00:00
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* Actual SENSE DATA, see SPC-3 7.23.2 SPC_SENSE_KEY_OFFSET uses
|
|
|
|
* SENSE KEY values from include/scsi/scsi.h
|
|
|
|
*/
|
|
|
|
switch (reason) {
|
2012-12-17 08:53:33 +00:00
|
|
|
case TCM_NO_SENSE:
|
|
|
|
/* CURRENT ERROR */
|
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
|
|
|
/* Not Ready */
|
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = NOT_READY;
|
|
|
|
/* NO ADDITIONAL SENSE INFORMATION */
|
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0;
|
|
|
|
buffer[SPC_ASCQ_KEY_OFFSET] = 0;
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
case TCM_NON_EXISTENT_LUN:
|
2011-07-26 23:59:00 +00:00
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
2011-07-26 23:59:00 +00:00
|
|
|
/* ILLEGAL REQUEST */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
|
2011-07-26 23:59:00 +00:00
|
|
|
/* LOGICAL UNIT NOT SUPPORTED */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x25;
|
2011-07-26 23:59:00 +00:00
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
case TCM_UNSUPPORTED_SCSI_OPCODE:
|
|
|
|
case TCM_SECTOR_COUNT_TOO_MANY:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* ILLEGAL REQUEST */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* INVALID COMMAND OPERATION CODE */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x20;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
case TCM_UNKNOWN_MODE_PAGE:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* ILLEGAL REQUEST */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* INVALID FIELD IN CDB */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x24;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
case TCM_CHECK_CONDITION_ABORT_CMD:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* ABORTED COMMAND */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* BUS DEVICE RESET FUNCTION OCCURRED */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x29;
|
|
|
|
buffer[SPC_ASCQ_KEY_OFFSET] = 0x03;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
case TCM_INCORRECT_AMOUNT_OF_DATA:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* ABORTED COMMAND */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* WRITE ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x0c;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* NOT ENOUGH UNSOLICITED DATA */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASCQ_KEY_OFFSET] = 0x0d;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
case TCM_INVALID_CDB_FIELD:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
2012-01-10 01:54:00 +00:00
|
|
|
/* ILLEGAL REQUEST */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* INVALID FIELD IN CDB */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x24;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
case TCM_INVALID_PARAMETER_LIST:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
2012-01-10 01:54:00 +00:00
|
|
|
/* ILLEGAL REQUEST */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* INVALID FIELD IN PARAMETER LIST */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x26;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
2013-02-08 23:18:39 +00:00
|
|
|
case TCM_PARAMETER_LIST_LENGTH_ERROR:
|
|
|
|
/* CURRENT ERROR */
|
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
|
|
|
/* ILLEGAL REQUEST */
|
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
|
|
|
|
/* PARAMETER LIST LENGTH ERROR */
|
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x1a;
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
case TCM_UNEXPECTED_UNSOLICITED_DATA:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* ABORTED COMMAND */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* WRITE ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x0c;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* UNEXPECTED_UNSOLICITED_DATA */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASCQ_KEY_OFFSET] = 0x0c;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
case TCM_SERVICE_CRC_ERROR:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* ABORTED COMMAND */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* PROTOCOL SERVICE CRC ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x47;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* N/A */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASCQ_KEY_OFFSET] = 0x05;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
case TCM_SNACK_REJECTED:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* ABORTED COMMAND */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* READ ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x11;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* FAILED RETRANSMISSION REQUEST */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASCQ_KEY_OFFSET] = 0x13;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
case TCM_WRITE_PROTECTED:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* DATA PROTECT */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = DATA_PROTECT;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* WRITE PROTECTED */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x27;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
2012-07-16 22:34:21 +00:00
|
|
|
case TCM_ADDRESS_OUT_OF_RANGE:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
2012-07-16 22:34:21 +00:00
|
|
|
/* ILLEGAL REQUEST */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
|
2012-07-16 22:34:21 +00:00
|
|
|
/* LOGICAL BLOCK ADDRESS OUT OF RANGE */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x21;
|
2012-07-16 22:34:21 +00:00
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
case TCM_CHECK_CONDITION_UNIT_ATTENTION:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* UNIT ATTENTION */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
core_scsi3_ua_for_check_condition(cmd, &asc, &ascq);
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = asc;
|
|
|
|
buffer[SPC_ASCQ_KEY_OFFSET] = ascq;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
case TCM_CHECK_CONDITION_NOT_READY:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* Not Ready */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = NOT_READY;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
transport_get_sense_codes(cmd, &asc, &ascq);
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = asc;
|
|
|
|
buffer[SPC_ASCQ_KEY_OFFSET] = ascq;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
2013-08-19 22:10:38 +00:00
|
|
|
case TCM_MISCOMPARE_VERIFY:
|
|
|
|
/* CURRENT ERROR */
|
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = MISCOMPARE;
|
|
|
|
/* MISCOMPARE DURING VERIFY OPERATION */
|
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x1d;
|
|
|
|
buffer[SPC_ASCQ_KEY_OFFSET] = 0x00;
|
|
|
|
break;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
case TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE:
|
|
|
|
default:
|
|
|
|
/* CURRENT ERROR */
|
2012-08-15 21:35:25 +00:00
|
|
|
buffer[0] = 0x70;
|
|
|
|
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
|
2013-03-18 22:30:31 +00:00
|
|
|
/*
|
|
|
|
* Returning ILLEGAL REQUEST would cause immediate IO errors on
|
|
|
|
* Solaris initiators. Returning NOT READY instead means the
|
|
|
|
* operations will be retried a finite number of times and we
|
|
|
|
* can survive intermittent errors.
|
|
|
|
*/
|
|
|
|
buffer[SPC_SENSE_KEY_OFFSET] = NOT_READY;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/* LOGICAL UNIT COMMUNICATION FAILURE */
|
2012-12-17 08:53:32 +00:00
|
|
|
buffer[SPC_ASC_KEY_OFFSET] = 0x08;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* This code uses linux/include/scsi/scsi.h SAM status codes!
|
|
|
|
*/
|
|
|
|
cmd->scsi_status = SAM_STAT_CHECK_CONDITION;
|
|
|
|
/*
|
|
|
|
* Automatically padded, this value is encoded in the fabric's
|
|
|
|
* data_length response PDU containing the SCSI defined sense data.
|
|
|
|
*/
|
2012-08-15 21:35:25 +00:00
|
|
|
cmd->scsi_sense_length = TRANSPORT_SENSE_BUFFER;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
|
|
|
after_reason:
|
2013-06-27 00:36:17 +00:00
|
|
|
trace_target_cmd_complete(cmd);
|
2011-06-13 21:46:09 +00:00
|
|
|
return cmd->se_tfo->queue_status(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_send_check_condition_and_sense);
|
|
|
|
|
|
|
|
int transport_check_aborted_status(struct se_cmd *cmd, int send_status)
|
|
|
|
{
|
2012-11-16 16:06:19 +00:00
|
|
|
if (!(cmd->transport_state & CMD_T_ABORTED))
|
|
|
|
return 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2012-11-16 16:06:19 +00:00
|
|
|
if (!send_status || (cmd->se_cmd_flags & SCF_SENT_DELAYED_TAS))
|
|
|
|
return 1;
|
2012-04-03 22:51:12 +00:00
|
|
|
|
2012-11-16 16:06:19 +00:00
|
|
|
pr_debug("Sending delayed SAM_STAT_TASK_ABORTED status for CDB: 0x%02x ITT: 0x%08x\n",
|
|
|
|
cmd->t_task_cdb[0], cmd->se_tfo->get_task_tag(cmd));
|
2012-04-03 22:51:12 +00:00
|
|
|
|
2012-11-16 16:06:19 +00:00
|
|
|
cmd->se_cmd_flags |= SCF_SENT_DELAYED_TAS;
|
2013-06-27 00:36:17 +00:00
|
|
|
trace_target_cmd_complete(cmd);
|
2012-11-16 16:06:19 +00:00
|
|
|
cmd->se_tfo->queue_status(cmd);
|
|
|
|
|
|
|
|
return 1;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(transport_check_aborted_status);
|
|
|
|
|
|
|
|
void transport_send_task_abort(struct se_cmd *cmd)
|
|
|
|
{
|
2011-09-29 21:22:13 +00:00
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
2012-11-16 16:06:16 +00:00
|
|
|
if (cmd->se_cmd_flags & (SCF_SENT_CHECK_CONDITION | SCF_SENT_DELAYED_TAS)) {
|
2011-09-29 21:22:13 +00:00
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* If there are still expected incoming fabric WRITEs, we wait
|
|
|
|
* until until they have completed before sending a TASK_ABORTED
|
|
|
|
* response. This response with TASK_ABORTED status will be
|
|
|
|
* queued back to fabric module by transport_check_aborted_status().
|
|
|
|
*/
|
|
|
|
if (cmd->data_direction == DMA_TO_DEVICE) {
|
2011-07-19 08:55:10 +00:00
|
|
|
if (cmd->se_tfo->write_pending_status(cmd) != 0) {
|
2011-12-21 19:13:47 +00:00
|
|
|
cmd->transport_state |= CMD_T_ABORTED;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
smp_mb__after_atomic_inc();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
cmd->scsi_status = SAM_STAT_TASK_ABORTED;
|
2012-04-03 22:51:12 +00:00
|
|
|
|
2013-01-02 20:47:58 +00:00
|
|
|
transport_lun_remove_cmd(cmd);
|
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("Setting SAM_STAT_TASK_ABORTED status for CDB: 0x%02x,"
|
2011-05-03 00:12:10 +00:00
|
|
|
" ITT: 0x%08x\n", cmd->t_task_cdb[0],
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->get_task_tag(cmd));
|
2012-04-03 22:51:12 +00:00
|
|
|
|
2013-06-27 00:36:17 +00:00
|
|
|
trace_target_cmd_complete(cmd);
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->queue_status(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2012-07-08 19:58:49 +00:00
|
|
|
static void target_tmr_work(struct work_struct *work)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2012-07-08 19:58:49 +00:00
|
|
|
struct se_cmd *cmd = container_of(work, struct se_cmd, work);
|
2011-07-19 10:26:37 +00:00
|
|
|
struct se_device *dev = cmd->se_dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
struct se_tmr_req *tmr = cmd->se_tmr_req;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
switch (tmr->function) {
|
2011-03-14 11:06:04 +00:00
|
|
|
case TMR_ABORT_TASK:
|
2012-02-13 10:38:14 +00:00
|
|
|
core_tmr_abort_task(dev, tmr, cmd->se_sess);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
break;
|
2011-03-14 11:06:04 +00:00
|
|
|
case TMR_ABORT_TASK_SET:
|
|
|
|
case TMR_CLEAR_ACA:
|
|
|
|
case TMR_CLEAR_TASK_SET:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
tmr->response = TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED;
|
|
|
|
break;
|
2011-03-14 11:06:04 +00:00
|
|
|
case TMR_LUN_RESET:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
ret = core_tmr_lun_reset(dev, tmr, NULL, NULL);
|
|
|
|
tmr->response = (!ret) ? TMR_FUNCTION_COMPLETE :
|
|
|
|
TMR_FUNCTION_REJECTED;
|
|
|
|
break;
|
2011-03-14 11:06:04 +00:00
|
|
|
case TMR_TARGET_WARM_RESET:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
tmr->response = TMR_FUNCTION_REJECTED;
|
|
|
|
break;
|
2011-03-14 11:06:04 +00:00
|
|
|
case TMR_TARGET_COLD_RESET:
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
tmr->response = TMR_FUNCTION_REJECTED;
|
|
|
|
break;
|
|
|
|
default:
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_err("Uknown TMR function: 0x%02x.\n",
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
tmr->function);
|
|
|
|
tmr->response = TMR_FUNCTION_REJECTED;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
cmd->t_state = TRANSPORT_ISTATE_PROCESSING;
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->queue_tm_rsp(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
|
2011-10-17 17:56:44 +00:00
|
|
|
transport_cmd_check_stop_to_fabric(cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2012-07-08 19:58:49 +00:00
|
|
|
int transport_generic_handle_tmr(
|
|
|
|
struct se_cmd *cmd)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
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{
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2012-07-08 19:58:49 +00:00
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INIT_WORK(&cmd->work, target_tmr_work);
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|
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queue_work(cmd->se_dev->tmr_wq, &cmd->work);
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[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
return 0;
|
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|
|
}
|
2012-07-08 19:58:49 +00:00
|
|
|
EXPORT_SYMBOL(transport_generic_handle_tmr);
|