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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-03-22 14:55:56 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-04-07 01:48:51 -0700 |
| commit | 131e6abc674edb9f9a59090bb35bf6650569b7e7 (patch) | |
| tree | 3baa38894c61d5fca1a99ae91a7ba9986c570d34 /drivers/scsi | |
| parent | 68259b5aac13a57cba797b9605ed9812158f0e72 (diff) | |
| download | linux-131e6abc674edb9f9a59090bb35bf6650569b7e7.tar.gz linux-131e6abc674edb9f9a59090bb35bf6650569b7e7.tar.bz2 linux-131e6abc674edb9f9a59090bb35bf6650569b7e7.zip | |
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 <amleung21@yahoo.com>
Cc: Mark Rustad <mark.d.rustad@intel.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Vu Pham <vu@mellanox.com>
Cc: Chris Boot <bootc@bootc.net>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Cc: Saurav Kashyap <saurav.kashyap@qlogic.com>
Cc: Quinn Tran <quinn.tran@qlogic.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/qla2xxx/tcm_qla2xxx.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index 788c4fe2b0c9..b23a0ffe140e 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -684,6 +684,20 @@ static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) qlt_xmit_tm_rsp(mcmd); } +static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) +{ + struct qla_tgt_cmd *cmd = container_of(se_cmd, + struct qla_tgt_cmd, se_cmd); + struct scsi_qla_host *vha = cmd->vha; + struct qla_hw_data *ha = vha->hw; + + if (!cmd->sg_mapped) + return; + + pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); + cmd->sg_mapped = 0; +} + /* Local pointer to allocated TCM configfs fabric module */ struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; @@ -1877,6 +1891,7 @@ static struct target_core_fabric_ops tcm_qla2xxx_ops = { .queue_data_in = tcm_qla2xxx_queue_data_in, .queue_status = tcm_qla2xxx_queue_status, .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, + .aborted_task = tcm_qla2xxx_aborted_task, /* * Setup function pointers for generic logic in * target_core_fabric_configfs.c @@ -1926,6 +1941,7 @@ static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { .queue_data_in = tcm_qla2xxx_queue_data_in, .queue_status = tcm_qla2xxx_queue_status, .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, + .aborted_task = tcm_qla2xxx_aborted_task, /* * Setup function pointers for generic logic in * target_core_fabric_configfs.c |