linux.git/include/target/target_core_base.h, branch v3.6-rc2

target: Add generation of LOGICAL BLOCK ADDRESS OUT OF RANGE

2012-07-17T00:35:35+00:00

Many SCSI commands are defined to return a CHECK CONDITION / ILLEGAL
REQUEST with ASC set to LOGICAL BLOCK ADDRESS OUT OF RANGE if the
initiator sends a command that accesses a too-big LBA.  Add an enum
value and case entries so that target code can return this status.

Signed-off-by: Roland Dreier 
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger

target: Remove se_session.sess_wait_list

2012-07-17T00:35:27+00:00

Since we set se_session.sess_tearing_down and stop new commands from
being added to se_session.sess_cmd_list before we wait for commands to
finish when freeing a session, there's no need for a separate
sess_wait_list -- if we let new commands be added to sess_cmd_list
after setting sess_tearing_down, that would be a bug that breaks the
logic of waiting in-flight commands.

Also rename target_splice_sess_cmd_list() to
target_sess_cmd_list_set_waiting(), since we are no longer splicing
onto a separate list.

Signed-off-by: Roland Dreier 
Signed-off-by: Nicholas Bellinger

target: replace the processing thread with a TMR work queue

2012-07-17T00:35:21+00:00

The last functionality of the target processing thread is offloading possibly
long running task management requests from the submitter context.  To keep
TMR semantics the same we need a single threaded ordered queue, which can
be provided by a per-device workqueue with the right flags.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: remove transport_generic_handle_cdb_map

2012-07-17T00:35:21+00:00

Remove this command submission path which is not used by any in-tree driver.
This also removes the now unused new_cmd_map fabtric method, which a few
drivers implemented despite never calling transport_generic_handle_cdb_map.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: remove transport_generic_handle_data

2012-07-17T00:35:20+00:00

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: remove dead SCF_ flags

2012-07-17T00:29:12+00:00

Remove the dead SCF_SE_ALLOW_EOO and SCF_DELAYED_CMD_FROM_SAM_ATTR
from se_cmd_flags_table.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: move ref_cmd from the generic se_tmr_req into iscsi code

2012-07-17T00:29:11+00:00

Also remove the unused ref_task_lun field in struct se_tmr_req.

(nab: Add missing TASK_REASSIGN ref_lun vs. ref_cmd orig_fe_lun checks
      in iscsit_tmr_task_reassign)

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: remove the execute list

2012-07-17T00:29:11+00:00

Since "target: Drop se_device TCQ queue_depth usage from I/O path" we always
submit all commands (or back then, tasks) from __transport_execute_tasks.

That means the the execute list has lots its purpose, as we can simply
submit the commands that are restarted in transport_complete_task_attr
directly while we walk the list.  In fact doing so also solves a race
in the way it currently walks to delayed_cmd_list as well.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: remove control CDB flags

2012-07-17T00:25:55+00:00

We don't need three flags to classifiy the CDB as we can check for a NULL S/G
list for a dataless command, and can infer from the absence of the data flag
that we deal with a control CDB.  Also remove the _SG_IO from the data CDB
flag as all I/O is dont on S/G lists now.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: Add MI_REPORT_TARGET_PGS ext. header + implict_trans_secs attribute

2012-05-17T07:45:58+00:00

This patch adds support for ALUA MI_REPORT_TARGET_PGS extended header
format defined within SPC-4.  It changes target core ALUA emulation logic
within target_emulate_report_target_port_groups() to support both the
extended and original length only header formats.

It includes adding a new 'implict_trans_secs' attribute for each ALUA
target port group to control the value returned to the application client
for an recommended implict translation timeout in seconds.  By default
this value is currently set to zero, and limited up to 255 by virtue of
using a single byte in the extended header format.

This value is used by target_emulate_report_target_port_groups() within
the extended header logic to set IMPLICIT TRANSITION TIME as defined by
spc4r30.

Cc: Hannes Reinecke 
Cc: Rob Evers 
Cc: Christoph Hellwig 
Cc: Roland Dreier 
Signed-off-by: Nicholas Bellinger