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Nicholas Bellinger 40b054970a iscsi-target: Fix sendpage breakage with proper padding+DataDigest iovec offsets 
This patch fixes a bug in the iscsit_fe_sendpage_sg() transmit codepath that
was originally introduced with the v3.1 iscsi-target merge that incorrectly
uses hardcoded cmd->iov_data_count values to determine cmd->iov_data[] offsets
for extra outgoing padding and DataDigest payload vectors.

This code is obviously incorrect for the DataDigest enabled case with sendpage
offload, and this fix ensures correct operation for padding + DataDigest,
padding only, and DataDigest only cases.  The bug was introduced during a
pre-merge change in iscsit_fe_sendpage_sg() to natively use struct scatterlist
instead of the legacy v3.0 struct se_mem logic.

Cc: Andy Grover <agrover@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
 		2011-09-16 23:47:07 +00:00
..
iscsi iscsi-target: Fix sendpage breakage with proper padding+DataDigest iovec offsets 2011-09-16 23:47:07 +00:00
loopback target: Follow up core updates from AGrover and HCH (round 4) 2011-07-22 09:37:48 +00:00
tcm_fc tcm_fc: Work queue based approach instead of managing own thread and event based mechanism 2011-09-16 09:50:09 +00:00
Kconfig iscsi-target: Add iSCSI fabric support for target v4.1 2011-07-26 09:16:43 +00:00
Makefile iscsi-target: Add iSCSI fabric support for target v4.1 2011-07-26 09:16:43 +00:00
target_core_alua.c target: Follow up core updates from AGrover and HCH (round 4) 2011-07-22 09:37:48 +00:00
target_core_alua.h [SCSI] target: Add LIO target core v4.0.0-rc6 2011-01-14 10:12:29 -06:00
target_core_cdb.c target: Skip non hex characters for VPD=0x83 NAA IEEE Registered Extended 2011-09-16 19:36:56 +00:00
target_core_configfs.c target: fix typo Assoication -> Association 2011-07-22 09:37:49 +00:00
target_core_device.c target: Convert acl_node_lock to be IRQ-disabling 2011-08-22 19:28:36 +00:00
target_core_fabric_configfs.c target: Use ERR_CAST inlined function 2011-08-22 19:26:15 +00:00
target_core_fabric_lib.c target: remove custom hex2bin() implementation 2011-07-22 09:37:49 +00:00
target_core_file.c target: Follow up core updates from AGrover and HCH (round 4) 2011-07-22 09:37:48 +00:00
target_core_file.h target: Follow up core updates from AGrover and HCH (round 4) 2011-07-22 09:37:48 +00:00
target_core_hba.c target: Follow up core updates from AGrover and HCH (round 4) 2011-07-22 09:37:48 +00:00
target_core_hba.h [SCSI] target: Add LIO target core v4.0.0-rc6 2011-01-14 10:12:29 -06:00
target_core_iblock.c target: ->map_task_SG conversion to ->map_control_SG and ->map_data_SG 2011-07-22 09:37:48 +00:00
target_core_iblock.h target: Follow up core updates from AGrover and HCH (round 4) 2011-07-22 09:37:48 +00:00
target_core_pr.c target: Convert acl_node_lock to be IRQ-disabling 2011-08-22 19:28:36 +00:00
target_core_pr.h target: Core cleanups from AGrover (round 1) 2011-07-22 09:37:43 +00:00
target_core_pscsi.c target: ->map_task_SG conversion to ->map_control_SG and ->map_data_SG 2011-07-22 09:37:48 +00:00
target_core_pscsi.h target: Follow up core updates from AGrover and HCH (round 4) 2011-07-22 09:37:48 +00:00
target_core_rd.c target: Convert target_core_rd.c to use use BUG_ON 2011-08-22 19:26:17 +00:00
target_core_rd.h target: Follow up core updates from AGrover and HCH (round 4) 2011-07-22 09:37:48 +00:00
target_core_scdb.c target: Pass 2nd param of transport_split_cdb by value 2011-07-22 09:37:48 +00:00
target_core_scdb.h target: Pass 2nd param of transport_split_cdb by value 2011-07-22 09:37:48 +00:00
target_core_stat.c target: Core cleanups from AGrover (round 1) 2011-07-22 09:37:43 +00:00
target_core_stat.h [SCSI] target: add initial statistics 2011-03-23 11:36:50 -05:00
target_core_tmr.c target: Follow up core updates from AGrover and HCH (round 4) 2011-07-22 09:37:48 +00:00
target_core_tpg.c target: Convert acl_node_lock to be IRQ-disabling 2011-08-22 19:28:36 +00:00
target_core_transport.c target: Fix race between multiple invocations of target_qf_do_work() 2011-09-16 09:29:20 +00:00
target_core_ua.c target: Follow up core updates from AGrover and HCH (round 4) 2011-07-22 09:37:48 +00:00
target_core_ua.h [SCSI] target: Add LIO target core v4.0.0-rc6 2011-01-14 10:12:29 -06:00