tcm_fc: Generate TASK_SET_FULL status for response failures
authorNicholas Bellinger <nab@linux-iscsi.org>
Thu, 5 Jun 2014 23:37:38 +0000 (16:37 -0700)
committerNicholas Bellinger <nab@linux-iscsi.org>
Fri, 6 Jun 2014 21:20:51 +0000 (14:20 -0700)
commit6dbe7f4e97d55eefcb471c41c16b62fca5f10c68
tree83fa6f479e1fed96f44d99dfd1b54f66a4642e1b
parentb3e5fe1688b998ba5287a68667ef7cc568739e44
tcm_fc: Generate TASK_SET_FULL status for response failures

This patch changes ft_queue_status() to set SAM_STAT_TASK_SET_FULL
status upon lport->tt.seq_send( failure, and return -EAGAIN to notify
target-core to attempt to requeue the response.

It also does the same for a fc_frame_alloc() failures, in order to
signal the initiator that it should try to reduce it's current
queue_depth, to lower the number of outstanding I/Os on the wire.

Reported-by: Vasu Dev <vasu.dev@linux.intel.com>
Reviewed-by: Vasu Dev <vasu.dev@linux.intel.com>
Cc: Jun Wu <jwu@stormojo.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
drivers/target/tcm_fc/tfc_cmd.c