linux/drivers/target
Nicholas Bellinger a636078552 target: Add target_submit_cmd() for process context fabric submission
This patch adds a target_submit_cmd() caller that can be used by fabrics
to submit an uninitialized se_cmd descriptor to an struct se_session +
unpacked_lun from workqueue process context.  This call will invoke the
following steps:

- transport_init_se_cmd() to setup se_cmd specific pointers
- Obtain se_cmd->cmd_kref references with target_get_sess_cmd()
- set se_cmd->t_tasks_bidi
- transport_lookup_cmd_lun() to setup struct se_cmd->se_lun from
  the passed unpacked_lun
- transport_generic_allocate_tasks() to setup the passed *cdb, and
- transport_handle_cdb_direct() handle READ dispatch or WRITE
  ready-to-transfer callback to fabric

v2 changes from hch feedback:

*) Add target_sc_flags_table for target_submit_cmd flags
*) Rename bidi parameter to flags, add TARGET_SCF_BIDI_OP
*) Convert checks to BUG_ON
*) Add out_check_cond for transport_send_check_condition_and_sense
   usage

v3 changes:

*) Add TARGET_SCF_ACK_KREF for target_submit_cmd into
   target_get_sess_cmd to determine when the fabric caller is expecting
   a second kref_put() from fabric packet acknowledgement.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2011-12-14 11:40:56 +00:00
..
iscsi iscsi-target: fix chap identifier simple_strtoul usage 2011-12-14 11:28:09 +00:00
loopback tcm_loop: bump max_sectors 2011-12-14 11:28:11 +00:00
tcm_fc target: header reshuffle, part2 2011-12-14 11:26:05 +00:00
Kconfig iscsi-target: Add iSCSI fabric support for target v4.1 2011-07-26 09:16:43 +00:00
Makefile target: remove the ->transport_split_cdb callback in se_cmd 2011-10-24 03:21:15 +00:00
target_core_alua.c target: header reshuffle, part2 2011-12-14 11:26:05 +00:00
target_core_alua.h target: pass the se_task to the CDB emulation callback 2011-11-04 08:00:17 +00:00
target_core_cdb.c target: Set response format in INQUIRY response 2011-12-14 11:38:28 +00:00
target_core_configfs.c target/configs: remove trailing newline from udev_path and alias 2011-12-14 11:28:10 +00:00
target_core_device.c target: header reshuffle, part2 2011-12-14 11:26:05 +00:00
target_core_fabric_configfs.c target: header reshuffle, part2 2011-12-14 11:26:05 +00:00
target_core_fabric_lib.c target: remove useless casts 2011-12-14 11:28:07 +00:00
target_core_file.c target: remove useless casts 2011-12-14 11:28:07 +00:00
target_core_file.h target: make the ->get_cdb method optional 2011-10-24 03:21:11 +00:00
target_core_hba.c target: header reshuffle, part2 2011-12-14 11:26:05 +00:00
target_core_iblock.c target: remove useless casts 2011-12-14 11:28:07 +00:00
target_core_iblock.h target: make the ->get_cdb method optional 2011-10-24 03:21:11 +00:00
target_core_internal.h target: reshuffle headers 2011-12-14 08:51:12 +00:00
target_core_pr.c target: Move core_scsi3_check_cdb_abort_and_preempt 2011-12-14 11:27:34 +00:00
target_core_pr.h target: Move core_scsi3_check_cdb_abort_and_preempt 2011-12-14 11:27:34 +00:00
target_core_pscsi.c target: remove useless casts 2011-12-14 11:28:07 +00:00
target_core_pscsi.h target: cleanup pscsi request submission 2011-10-24 03:20:44 +00:00
target_core_rd.c target: use \n as a separator for configuration 2011-12-14 11:27:23 +00:00
target_core_rd.h target: make the ->get_cdb method optional 2011-10-24 03:21:11 +00:00
target_core_stat.c target: remove useless casts 2011-12-14 11:28:07 +00:00
target_core_tmr.c target: simplify target_check_cdb_and_preempt 2011-12-14 11:27:55 +00:00
target_core_tpg.c target: header reshuffle, part2 2011-12-14 11:26:05 +00:00
target_core_transport.c target: Add target_submit_cmd() for process context fabric submission 2011-12-14 11:40:56 +00:00
target_core_ua.c target: header reshuffle, part2 2011-12-14 11:26:05 +00:00
target_core_ua.h