[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: 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_tmr.c
|
|
|
|
*
|
|
|
|
* This file contains SPC-3 task management infrastructure
|
|
|
|
*
|
2013-09-05 22:29:12 +00:00
|
|
|
* (c) Copyright 2009-2013 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
|
|
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|
* (at your option) any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
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|
|
* 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.
|
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|
*
|
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|
******************************************************************************/
|
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|
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|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/spinlock.h>
|
|
|
|
#include <linux/list.h>
|
2011-08-30 22:16:43 +00:00
|
|
|
#include <linux/export.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
|
|
|
|
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"
|
|
|
|
|
2012-01-19 21:39:17 +00:00
|
|
|
int core_tmr_alloc_req(
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: 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 *se_cmd,
|
|
|
|
void *fabric_tmr_ptr,
|
2011-10-06 16:56:16 +00:00
|
|
|
u8 function,
|
|
|
|
gfp_t gfp_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
|
|
|
{
|
|
|
|
struct se_tmr_req *tmr;
|
|
|
|
|
2012-01-19 21:39:17 +00:00
|
|
|
tmr = kzalloc(sizeof(struct se_tmr_req), gfp_flags);
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!tmr) {
|
|
|
|
pr_err("Unable to allocate struct se_tmr_req\n");
|
2012-01-19 21:39:17 +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
|
|
|
}
|
2012-01-19 21:39:17 +00:00
|
|
|
|
|
|
|
se_cmd->se_cmd_flags |= SCF_SCSI_TMR_CDB;
|
|
|
|
se_cmd->se_tmr_req = tmr;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: 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->task_cmd = se_cmd;
|
|
|
|
tmr->fabric_tmr_ptr = fabric_tmr_ptr;
|
|
|
|
tmr->function = function;
|
|
|
|
INIT_LIST_HEAD(&tmr->tmr_list);
|
|
|
|
|
2012-01-19 21:39:17 +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
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(core_tmr_alloc_req);
|
|
|
|
|
2014-09-16 20:23:10 +00:00
|
|
|
void core_tmr_release_req(struct se_tmr_req *tmr)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: 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_device *dev = tmr->tmr_dev;
|
2011-09-29 04:37:29 +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
|
|
|
|
2014-09-16 20:23:10 +00:00
|
|
|
if (dev) {
|
|
|
|
spin_lock_irqsave(&dev->se_tmr_lock, flags);
|
2016-01-12 05:53:05 +00:00
|
|
|
list_del_init(&tmr->tmr_list);
|
2014-09-16 20:23:10 +00:00
|
|
|
spin_unlock_irqrestore(&dev->se_tmr_lock, flags);
|
2011-06-23 23:48:32 +00:00
|
|
|
}
|
|
|
|
|
2012-01-19 21:39:17 +00:00
|
|
|
kfree(tmr);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2016-01-19 23:23:02 +00:00
|
|
|
static void core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
{
|
2016-01-19 23:23:02 +00:00
|
|
|
unsigned long flags;
|
|
|
|
bool remove = true, send_tas;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* TASK ABORTED status (TAS) bit support
|
2014-09-16 20:23:10 +00:00
|
|
|
*/
|
2016-01-19 23:23:02 +00:00
|
|
|
spin_lock_irqsave(&cmd->t_state_lock, flags);
|
|
|
|
send_tas = (cmd->transport_state & CMD_T_TAS);
|
|
|
|
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
|
|
|
|
|
|
|
|
if (send_tas) {
|
2014-03-22 05:20:41 +00:00
|
|
|
remove = 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
|
|
|
transport_send_task_abort(cmd);
|
2014-03-22 05:20:41 +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
|
|
|
|
2014-03-22 05:20:41 +00:00
|
|
|
transport_cmd_finish_abort(cmd, remove);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
}
|
|
|
|
|
2011-11-24 01:05:12 +00:00
|
|
|
static int target_check_cdb_and_preempt(struct list_head *list,
|
|
|
|
struct se_cmd *cmd)
|
2011-11-24 01:04:42 +00:00
|
|
|
{
|
2011-11-24 01:05:12 +00:00
|
|
|
struct t10_pr_registration *reg;
|
2011-11-24 01:04:42 +00:00
|
|
|
|
2011-11-24 01:05:12 +00:00
|
|
|
if (!list)
|
|
|
|
return 0;
|
|
|
|
list_for_each_entry(reg, list, pr_reg_abort_list) {
|
|
|
|
if (reg->pr_res_key == cmd->pr_res_key)
|
2011-11-24 01:04:42 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2016-01-19 23:23:02 +00:00
|
|
|
static bool __target_check_io_state(struct se_cmd *se_cmd,
|
|
|
|
struct se_session *tmr_sess, int tas)
|
2016-01-12 05:31:09 +00:00
|
|
|
{
|
|
|
|
struct se_session *sess = se_cmd->se_sess;
|
|
|
|
|
|
|
|
assert_spin_locked(&sess->sess_cmd_lock);
|
|
|
|
WARN_ON_ONCE(!irqs_disabled());
|
|
|
|
/*
|
|
|
|
* If command already reached CMD_T_COMPLETE state within
|
2016-01-19 23:23:02 +00:00
|
|
|
* target_complete_cmd() or CMD_T_FABRIC_STOP due to shutdown,
|
|
|
|
* this se_cmd has been passed to fabric driver and will
|
|
|
|
* not be aborted.
|
2016-01-12 05:31:09 +00:00
|
|
|
*
|
|
|
|
* Otherwise, obtain a local se_cmd->cmd_kref now for TMR
|
|
|
|
* ABORT_TASK + LUN_RESET for CMD_T_ABORTED processing as
|
|
|
|
* long as se_cmd->cmd_kref is still active unless zero.
|
|
|
|
*/
|
|
|
|
spin_lock(&se_cmd->t_state_lock);
|
2016-01-19 23:23:02 +00:00
|
|
|
if (se_cmd->transport_state & (CMD_T_COMPLETE | CMD_T_FABRIC_STOP)) {
|
|
|
|
pr_debug("Attempted to abort io tag: %llu already complete or"
|
|
|
|
" fabric stop, skipping\n", se_cmd->tag);
|
|
|
|
spin_unlock(&se_cmd->t_state_lock);
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
if (sess->sess_tearing_down || se_cmd->cmd_wait_set) {
|
|
|
|
pr_debug("Attempted to abort io tag: %llu already shutdown,"
|
2016-01-12 05:31:09 +00:00
|
|
|
" skipping\n", se_cmd->tag);
|
|
|
|
spin_unlock(&se_cmd->t_state_lock);
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
se_cmd->transport_state |= CMD_T_ABORTED;
|
2016-01-19 23:23:02 +00:00
|
|
|
|
|
|
|
if ((tmr_sess != se_cmd->se_sess) && tas)
|
|
|
|
se_cmd->transport_state |= CMD_T_TAS;
|
|
|
|
|
2016-01-12 05:31:09 +00:00
|
|
|
spin_unlock(&se_cmd->t_state_lock);
|
|
|
|
|
|
|
|
return kref_get_unless_zero(&se_cmd->cmd_kref);
|
|
|
|
}
|
|
|
|
|
2012-02-13 10:38:14 +00:00
|
|
|
void core_tmr_abort_task(
|
|
|
|
struct se_device *dev,
|
|
|
|
struct se_tmr_req *tmr,
|
|
|
|
struct se_session *se_sess)
|
|
|
|
{
|
2014-09-16 20:23:13 +00:00
|
|
|
struct se_cmd *se_cmd;
|
2012-02-13 10:38:14 +00:00
|
|
|
unsigned long flags;
|
2015-04-14 11:26:44 +00:00
|
|
|
u64 ref_tag;
|
2012-02-13 10:38:14 +00:00
|
|
|
|
|
|
|
spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
|
2014-09-16 20:23:13 +00:00
|
|
|
list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
|
2012-02-13 10:38:14 +00:00
|
|
|
|
|
|
|
if (dev != se_cmd->se_dev)
|
|
|
|
continue;
|
2014-04-04 04:38:19 +00:00
|
|
|
|
2015-04-14 11:26:06 +00:00
|
|
|
/* skip task management functions, including tmr->task_cmd */
|
|
|
|
if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
|
2014-04-04 04:38:19 +00:00
|
|
|
continue;
|
|
|
|
|
2015-04-14 11:26:44 +00:00
|
|
|
ref_tag = se_cmd->tag;
|
2012-02-13 10:38:14 +00:00
|
|
|
if (tmr->ref_task_tag != ref_tag)
|
|
|
|
continue;
|
|
|
|
|
2015-04-14 11:26:44 +00:00
|
|
|
printk("ABORT_TASK: Found referenced %s task_tag: %llu\n",
|
2012-02-13 10:38:14 +00:00
|
|
|
se_cmd->se_tfo->get_fabric_name(), ref_tag);
|
|
|
|
|
2016-12-23 12:47:38 +00:00
|
|
|
if (!__target_check_io_state(se_cmd, se_sess, 0))
|
|
|
|
continue;
|
|
|
|
|
2012-02-13 10:38:14 +00:00
|
|
|
list_del_init(&se_cmd->se_cmd_list);
|
|
|
|
spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
|
|
|
|
|
|
|
|
cancel_work_sync(&se_cmd->work);
|
|
|
|
transport_wait_for_tasks(se_cmd);
|
|
|
|
|
2014-03-22 05:20:41 +00:00
|
|
|
transport_cmd_finish_abort(se_cmd, true);
|
2016-01-12 05:31:09 +00:00
|
|
|
target_put_sess_cmd(se_cmd);
|
2012-02-13 10:38:14 +00:00
|
|
|
|
|
|
|
printk("ABORT_TASK: Sending TMR_FUNCTION_COMPLETE for"
|
2015-04-14 11:26:44 +00:00
|
|
|
" ref_tag: %llu\n", ref_tag);
|
2012-02-13 10:38:14 +00:00
|
|
|
tmr->response = TMR_FUNCTION_COMPLETE;
|
2017-01-19 23:45:57 +00:00
|
|
|
atomic_long_inc(&dev->aborts_complete);
|
2012-02-13 10:38:14 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
|
|
|
|
|
2015-04-14 11:26:44 +00:00
|
|
|
printk("ABORT_TASK: Sending TMR_TASK_DOES_NOT_EXIST for ref_tag: %lld\n",
|
2012-02-13 10:38:14 +00:00
|
|
|
tmr->ref_task_tag);
|
|
|
|
tmr->response = TMR_TASK_DOES_NOT_EXIST;
|
2017-01-19 23:45:57 +00:00
|
|
|
atomic_long_inc(&dev->aborts_no_task);
|
2012-02-13 10:38:14 +00:00
|
|
|
}
|
|
|
|
|
2011-09-29 04:37:29 +00:00
|
|
|
static void core_tmr_drain_tmr_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
|
|
|
struct se_device *dev,
|
|
|
|
struct se_tmr_req *tmr,
|
2011-09-29 04:37:29 +00:00
|
|
|
struct list_head *preempt_and_abort_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
|
|
|
{
|
2011-09-29 04:37:29 +00:00
|
|
|
LIST_HEAD(drain_tmr_list);
|
2016-01-12 05:53:05 +00:00
|
|
|
struct se_session *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
|
|
|
struct se_tmr_req *tmr_p, *tmr_pp;
|
2011-09-29 04:37:29 +00:00
|
|
|
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;
|
2016-01-12 05:53:05 +00:00
|
|
|
bool rc;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
/*
|
|
|
|
* Release all pending and outgoing TMRs aside from the received
|
|
|
|
* LUN_RESET tmr..
|
|
|
|
*/
|
2011-09-29 04:37:29 +00:00
|
|
|
spin_lock_irqsave(&dev->se_tmr_lock, flags);
|
2017-02-15 00:25:54 +00:00
|
|
|
list_del_init(&tmr->tmr_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
|
|
|
list_for_each_entry_safe(tmr_p, tmr_pp, &dev->dev_tmr_list, tmr_list) {
|
|
|
|
cmd = tmr_p->task_cmd;
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!cmd) {
|
|
|
|
pr_err("Unable to locate struct se_cmd for TMR\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
|
|
|
continue;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* If this function was called with a valid pr_res_key
|
|
|
|
* parameter (eg: for PROUT PREEMPT_AND_ABORT service action
|
2015-10-22 22:52:01 +00:00
|
|
|
* skip non registration key matching TMRs.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
*/
|
2011-11-24 01:05:12 +00:00
|
|
|
if (target_check_cdb_and_preempt(preempt_and_abort_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
|
|
|
continue;
|
|
|
|
|
2016-01-12 05:53:05 +00:00
|
|
|
sess = cmd->se_sess;
|
|
|
|
if (WARN_ON_ONCE(!sess))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
spin_lock(&sess->sess_cmd_lock);
|
2011-09-29 04:37:29 +00:00
|
|
|
spin_lock(&cmd->t_state_lock);
|
2016-01-19 23:23:02 +00:00
|
|
|
if (!(cmd->transport_state & CMD_T_ACTIVE) ||
|
|
|
|
(cmd->transport_state & CMD_T_FABRIC_STOP)) {
|
2011-09-29 04:37:29 +00:00
|
|
|
spin_unlock(&cmd->t_state_lock);
|
2016-01-12 05:53:05 +00:00
|
|
|
spin_unlock(&sess->sess_cmd_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
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (cmd->t_state == TRANSPORT_ISTATE_PROCESSING) {
|
2011-09-29 04:37:29 +00:00
|
|
|
spin_unlock(&cmd->t_state_lock);
|
2016-01-12 05:53:05 +00:00
|
|
|
spin_unlock(&sess->sess_cmd_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
|
|
|
continue;
|
|
|
|
}
|
2016-01-19 23:23:02 +00:00
|
|
|
if (sess->sess_tearing_down || cmd->cmd_wait_set) {
|
|
|
|
spin_unlock(&cmd->t_state_lock);
|
|
|
|
spin_unlock(&sess->sess_cmd_lock);
|
|
|
|
continue;
|
|
|
|
}
|
2016-01-12 05:53:05 +00:00
|
|
|
cmd->transport_state |= CMD_T_ABORTED;
|
2011-09-29 04:37:29 +00:00
|
|
|
spin_unlock(&cmd->t_state_lock);
|
|
|
|
|
2016-01-12 05:53:05 +00:00
|
|
|
rc = kref_get_unless_zero(&cmd->cmd_kref);
|
|
|
|
if (!rc) {
|
|
|
|
printk("LUN_RESET TMR: non-zero kref_get_unless_zero\n");
|
2016-01-19 23:23:02 +00:00
|
|
|
spin_unlock(&sess->sess_cmd_lock);
|
2016-01-12 05:53:05 +00:00
|
|
|
continue;
|
|
|
|
}
|
2016-01-19 23:23:02 +00:00
|
|
|
spin_unlock(&sess->sess_cmd_lock);
|
|
|
|
|
2011-10-26 20:37:56 +00:00
|
|
|
list_move_tail(&tmr_p->tmr_list, &drain_tmr_list);
|
2011-09-29 04:37:29 +00:00
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(&dev->se_tmr_lock, flags);
|
|
|
|
|
2011-10-26 21:22:19 +00:00
|
|
|
list_for_each_entry_safe(tmr_p, tmr_pp, &drain_tmr_list, tmr_list) {
|
2011-10-27 22:44:46 +00:00
|
|
|
list_del_init(&tmr_p->tmr_list);
|
2011-10-26 21:22:19 +00:00
|
|
|
cmd = tmr_p->task_cmd;
|
2011-09-29 04:37:29 +00:00
|
|
|
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("LUN_RESET: %s releasing TMR %p Function: 0x%02x,"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-17 19:11:26 +00:00
|
|
|
" Response: 0x%02x, t_state: %d\n",
|
2011-10-26 21:22:19 +00:00
|
|
|
(preempt_and_abort_list) ? "Preempt" : "", tmr_p,
|
|
|
|
tmr_p->function, tmr_p->response, 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
|
|
|
|
2016-01-12 05:53:05 +00:00
|
|
|
cancel_work_sync(&cmd->work);
|
|
|
|
transport_wait_for_tasks(cmd);
|
|
|
|
|
2011-10-09 09:02:51 +00:00
|
|
|
transport_cmd_finish_abort(cmd, 1);
|
2016-01-12 05:53:05 +00:00
|
|
|
target_put_sess_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
|
|
|
}
|
2011-09-29 04:37:29 +00:00
|
|
|
}
|
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
static void core_tmr_drain_state_list(
|
2011-09-29 04:37:29 +00:00
|
|
|
struct se_device *dev,
|
|
|
|
struct se_cmd *prout_cmd,
|
2016-01-16 20:49:49 +00:00
|
|
|
struct se_session *tmr_sess,
|
2011-09-29 04:37:29 +00:00
|
|
|
int tas,
|
|
|
|
struct list_head *preempt_and_abort_list)
|
|
|
|
{
|
|
|
|
LIST_HEAD(drain_task_list);
|
2016-01-12 05:31:09 +00:00
|
|
|
struct se_session *sess;
|
2012-04-24 04:25:05 +00:00
|
|
|
struct se_cmd *cmd, *next;
|
2011-09-29 04:37:29 +00:00
|
|
|
unsigned long flags;
|
2016-01-12 05:31:09 +00:00
|
|
|
int rc;
|
2012-04-24 04:25:05 +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
|
|
|
/*
|
2012-04-24 04:25:05 +00:00
|
|
|
* Complete outstanding commands with TASK_ABORTED SAM 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
|
|
|
* This is following sam4r17, section 5.6 Aborting commands, Table 38
|
|
|
|
* for TMR LUN_RESET:
|
|
|
|
*
|
|
|
|
* a) "Yes" indicates that each command that is aborted on an I_T nexus
|
|
|
|
* other than the one that caused the SCSI device condition is
|
|
|
|
* completed with TASK ABORTED status, if the TAS bit is set to one in
|
|
|
|
* the Control mode page (see SPC-4). "No" indicates that no status is
|
|
|
|
* returned for aborted commands.
|
|
|
|
*
|
|
|
|
* d) If the logical unit reset is caused by a particular I_T nexus
|
|
|
|
* (e.g., by a LOGICAL UNIT RESET task management function), then "yes"
|
|
|
|
* (TASK_ABORTED status) applies.
|
|
|
|
*
|
|
|
|
* Otherwise (e.g., if triggered by a hard reset), "no"
|
|
|
|
* (no TASK_ABORTED SAM status) applies.
|
|
|
|
*
|
|
|
|
* Note that this seems to be independent of TAS (Task Aborted Status)
|
|
|
|
* in the Control Mode Page.
|
|
|
|
*/
|
|
|
|
spin_lock_irqsave(&dev->execute_task_lock, flags);
|
2012-04-24 04:25:05 +00:00
|
|
|
list_for_each_entry_safe(cmd, next, &dev->state_list, state_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
|
|
|
/*
|
|
|
|
* For PREEMPT_AND_ABORT usage, only process commands
|
|
|
|
* with a matching reservation key.
|
|
|
|
*/
|
2011-11-24 01:05:12 +00:00
|
|
|
if (target_check_cdb_and_preempt(preempt_and_abort_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
|
|
|
continue;
|
2012-04-24 04:25:05 +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
|
|
|
/*
|
|
|
|
* Not aborting PROUT PREEMPT_AND_ABORT CDB..
|
|
|
|
*/
|
|
|
|
if (prout_cmd == cmd)
|
|
|
|
continue;
|
|
|
|
|
2016-01-12 05:31:09 +00:00
|
|
|
sess = cmd->se_sess;
|
|
|
|
if (WARN_ON_ONCE(!sess))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
spin_lock(&sess->sess_cmd_lock);
|
2016-01-19 23:23:02 +00:00
|
|
|
rc = __target_check_io_state(cmd, tmr_sess, tas);
|
2016-01-12 05:31:09 +00:00
|
|
|
spin_unlock(&sess->sess_cmd_lock);
|
|
|
|
if (!rc)
|
|
|
|
continue;
|
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
list_move_tail(&cmd->state_list, &drain_task_list);
|
|
|
|
cmd->state_active = false;
|
2011-09-29 04:37:29 +00:00
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(&dev->execute_task_lock, flags);
|
|
|
|
|
|
|
|
while (!list_empty(&drain_task_list)) {
|
2012-04-24 04:25:05 +00:00
|
|
|
cmd = list_entry(drain_task_list.next, struct se_cmd, state_list);
|
2016-01-12 05:31:09 +00:00
|
|
|
list_del_init(&cmd->state_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
|
|
|
|
2012-04-24 04:25:05 +00:00
|
|
|
pr_debug("LUN_RESET: %s cmd: %p"
|
2015-04-14 11:26:44 +00:00
|
|
|
" ITT/CmdSN: 0x%08llx/0x%08x, i_state: %d, t_state: %d"
|
2011-10-17 17:56:51 +00:00
|
|
|
"cdb: 0x%02x\n",
|
2012-04-24 04:25:05 +00:00
|
|
|
(preempt_and_abort_list) ? "Preempt" : "", cmd,
|
2015-04-14 11:26:44 +00:00
|
|
|
cmd->tag, 0,
|
2011-07-19 08:55:10 +00:00
|
|
|
cmd->se_tfo->get_cmd_state(cmd), cmd->t_state,
|
2011-10-17 17:56:51 +00:00
|
|
|
cmd->t_task_cdb[0]);
|
2015-04-14 11:26:44 +00:00
|
|
|
pr_debug("LUN_RESET: ITT[0x%08llx] - pr_res_key: 0x%016Lx"
|
2012-04-24 04:25:04 +00:00
|
|
|
" -- CMD_T_ACTIVE: %d"
|
2011-12-21 19:13:47 +00:00
|
|
|
" CMD_T_STOP: %d CMD_T_SENT: %d\n",
|
2015-04-14 11:26:44 +00:00
|
|
|
cmd->tag, cmd->pr_res_key,
|
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
|
|
|
|
2011-10-17 17:56:53 +00:00
|
|
|
/*
|
|
|
|
* If the command may be queued onto a workqueue cancel it now.
|
|
|
|
*
|
|
|
|
* This is equivalent to removal from the execute queue in the
|
|
|
|
* loop above, but we do it down here given that
|
|
|
|
* cancel_work_sync may block.
|
|
|
|
*/
|
2016-01-12 05:31:09 +00:00
|
|
|
cancel_work_sync(&cmd->work);
|
|
|
|
transport_wait_for_tasks(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
|
|
|
|
2016-01-19 23:23:02 +00:00
|
|
|
core_tmr_handle_tas_abort(cmd, tas);
|
2016-01-12 05:31:09 +00:00
|
|
|
target_put_sess_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
|
|
|
}
|
2011-09-29 04:37:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int core_tmr_lun_reset(
|
|
|
|
struct se_device *dev,
|
|
|
|
struct se_tmr_req *tmr,
|
|
|
|
struct list_head *preempt_and_abort_list,
|
|
|
|
struct se_cmd *prout_cmd)
|
|
|
|
{
|
|
|
|
struct se_node_acl *tmr_nacl = NULL;
|
|
|
|
struct se_portal_group *tmr_tpg = NULL;
|
2016-01-16 20:49:49 +00:00
|
|
|
struct se_session *tmr_sess = NULL;
|
2011-09-29 04:37:29 +00:00
|
|
|
int tas;
|
|
|
|
/*
|
|
|
|
* TASK_ABORTED status bit, this is configurable via ConfigFS
|
|
|
|
* struct se_device attributes. spc4r17 section 7.4.6 Control mode page
|
|
|
|
*
|
|
|
|
* A task aborted status (TAS) bit set to zero specifies that aborted
|
|
|
|
* tasks shall be terminated by the device server without any response
|
|
|
|
* to the application client. A TAS bit set to one specifies that tasks
|
|
|
|
* aborted by the actions of an I_T nexus other than the I_T nexus on
|
|
|
|
* which the command was received shall be completed with TASK ABORTED
|
|
|
|
* status (see SAM-4).
|
|
|
|
*/
|
2012-10-08 04:03:19 +00:00
|
|
|
tas = dev->dev_attrib.emulate_tas;
|
2011-09-29 04:37:29 +00:00
|
|
|
/*
|
|
|
|
* Determine if this se_tmr is coming from a $FABRIC_MOD
|
|
|
|
* or struct se_device passthrough..
|
|
|
|
*/
|
|
|
|
if (tmr && tmr->task_cmd && tmr->task_cmd->se_sess) {
|
2016-01-16 20:49:49 +00:00
|
|
|
tmr_sess = tmr->task_cmd->se_sess;
|
|
|
|
tmr_nacl = tmr_sess->se_node_acl;
|
|
|
|
tmr_tpg = tmr_sess->se_tpg;
|
2011-09-29 04:37:29 +00:00
|
|
|
if (tmr_nacl && tmr_tpg) {
|
|
|
|
pr_debug("LUN_RESET: TMR caller fabric: %s"
|
|
|
|
" initiator port %s\n",
|
|
|
|
tmr_tpg->se_tpg_tfo->get_fabric_name(),
|
|
|
|
tmr_nacl->initiatorname);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
pr_debug("LUN_RESET: %s starting for [%s], tas: %d\n",
|
|
|
|
(preempt_and_abort_list) ? "Preempt" : "TMR",
|
|
|
|
dev->transport->name, tas);
|
|
|
|
|
|
|
|
core_tmr_drain_tmr_list(dev, tmr, preempt_and_abort_list);
|
2016-01-16 20:49:49 +00:00
|
|
|
core_tmr_drain_state_list(dev, prout_cmd, tmr_sess, tas,
|
2011-09-29 04:37:29 +00:00
|
|
|
preempt_and_abort_list);
|
2012-07-08 19:58:49 +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
|
|
|
/*
|
|
|
|
* Clear any legacy SPC-2 reservation when called during
|
|
|
|
* LOGICAL UNIT RESET
|
|
|
|
*/
|
2011-06-08 17:36:43 +00:00
|
|
|
if (!preempt_and_abort_list &&
|
2012-10-08 04:03:19 +00:00
|
|
|
(dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: 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(&dev->dev_reservation_lock);
|
|
|
|
dev->dev_reserved_node_acl = NULL;
|
2012-10-08 04:03:19 +00:00
|
|
|
dev->dev_reservation_flags &= ~DRF_SPC2_RESERVATIONS;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: 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(&dev->dev_reservation_lock);
|
2011-06-08 17:36:43 +00:00
|
|
|
pr_debug("LUN_RESET: SCSI-2 Released reservation\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
|
|
|
}
|
|
|
|
|
2013-11-14 02:34:55 +00:00
|
|
|
atomic_long_inc(&dev->num_resets);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: 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("LUN_RESET: %s for [%s] Complete\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
|
|
|
(preempt_and_abort_list) ? "Preempt" : "TMR",
|
2011-07-19 08:55:10 +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;
|
|
|
|
}
|
2011-09-29 04:37:29 +00:00
|
|
|
|