From 131e6abc674edb9f9a59090bb35bf6650569b7e7 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Sat, 22 Mar 2014 14:55:56 -0700 Subject: target: Add TFO->abort_task for aborted task resources release Now that TASK_ABORTED status is not generated for all cases by TMR ABORT_TASK + LUN_RESET, a new TFO->abort_task() caller is necessary in order to give fabric drivers a chance to unmap hardware / software resources before the se_cmd descriptor is released via the normal TFO->release_cmd() codepath. This patch adds TFO->aborted_task() in core_tmr_abort_task() in place of the original transport_send_task_abort(), and also updates all fabric drivers to implement this caller. The fabric drivers that include changes to perform cleanup via ->aborted_task() are: - iscsi-target - iser-target - srpt - tcm_qla2xxx The fabric drivers that currently set ->aborted_task() to NOPs are: - loopback - tcm_fc - usb-gadget - sbp-target - vhost-scsi For the latter five, there appears to be no additional cleanup required before invoking TFO->release_cmd() to release the se_cmd descriptor. v2 changes: - Move ->aborted_task() call into transport_cmd_finish_abort (Alex) Cc: Alex Leung Cc: Mark Rustad Cc: Roland Dreier Cc: Vu Pham Cc: Chris Boot Cc: Sebastian Andrzej Siewior Cc: Michael S. Tsirkin Cc: Giridhar Malavali Cc: Saurav Kashyap Cc: Quinn Tran Cc: Sagi Grimberg Cc: Or Gerlitz Signed-off-by: Nicholas Bellinger --- drivers/vhost/scsi.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/vhost') diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index e48d4a672580..4a473355020f 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -539,6 +539,11 @@ static void tcm_vhost_queue_tm_rsp(struct se_cmd *se_cmd) return; } +static void tcm_vhost_aborted_task(struct se_cmd *se_cmd) +{ + return; +} + static void tcm_vhost_free_evt(struct vhost_scsi *vs, struct tcm_vhost_evt *evt) { vs->vs_events_nr--; @@ -2131,6 +2136,7 @@ static struct target_core_fabric_ops tcm_vhost_ops = { .queue_data_in = tcm_vhost_queue_data_in, .queue_status = tcm_vhost_queue_status, .queue_tm_rsp = tcm_vhost_queue_tm_rsp, + .aborted_task = tcm_vhost_aborted_task, /* * Setup callers for generic logic in target_core_fabric_configfs.c */ -- cgit v1.2.3