Nicholas Bellinger 08367c9e8f target: Fix remote-port TMR ABORT + se_cmd fabric stop ... commit 0f4a943168 upstream. To address the bug where fabric driver level shutdown of se_cmd occurs at the same time when TMR CMD_T_ABORTED is happening resulting in a -1 ->cmd_kref, this patch adds a CMD_T_FABRIC_STOP bit that is used to determine when TMR + driver I_T nexus shutdown is happening concurrently. It changes target_sess_cmd_list_set_waiting() to obtain se_cmd->cmd_kref + set CMD_T_FABRIC_STOP, and drop local reference in target_wait_for_sess_cmds() and invoke extra target_put_sess_cmd() during Task Aborted Status (TAS) when necessary. Also, it adds a new target_wait_free_cmd() wrapper around transport_wait_for_tasks() for the special case within transport_generic_free_cmd() to set CMD_T_FABRIC_STOP, and is now aware of CMD_T_ABORTED + CMD_T_TAS status bits to know when an extra transport_put_cmd() during TAS is required. Note transport_generic_free_cmd() is expected to block on cmd->cmd_wait_comp in order to follow what iscsi-target expects during iscsi_conn context se_cmd shutdown. Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Himanshu Madhani <himanshu.madhani@qlogic.com> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Andy Grover <agrover@redhat.com> Cc: Mike Christie <mchristi@redhat.com> Signed-off-by: Nicholas Bellinger <nab@daterainc.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>		2016-03-05 22:11:42 -05:00
..
iscsi	target/iscsi: Fix np_ip bracket issue by removing np_ip	2015-10-22 14:43:11 -07:00
configfs_macros.h	doc: fix broken references	2011-09-27 18:08:04 +02:00
target_core_backend.h	target: Use a PASSTHROUGH flag instead of transport_types	2015-05-30 19:58:11 -07:00
target_core_backend_configfs.h	target: Drop left-over fabric_max_sectors attribute	2015-01-09 15:22:05 -08:00
target_core_base.h	target: Fix remote-port TMR ABORT + se_cmd fabric stop	2016-03-05 22:11:42 -05:00
target_core_configfs.h	target: Fix se_tpg_tfo->tf_subsys regression + remove tf_subsystem	2015-05-30 18:04:20 -07:00
target_core_fabric.h	target: Remove first argument of target_{get,put}_sess_cmd()	2016-02-28 00:09:36 -05:00
target_core_fabric_configfs.h	target: Add target_show_dynamic_sessions attribute helper	2015-03-06 21:24:53 -08:00