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Subject[PATCH 5.3 137/180] scsi: qla2xxx: Do command completion on abort timeout
Date
From: Quinn Tran <qutran@marvell.com>

[ Upstream commit 71c80b75ce8f08c0978ce9a9816b81b5c3ce5e12 ]

On switch, fabric and mgt command timeout, driver send Abort to tell FW to
return the original command. If abort is timeout, then return both Abort
and original command for cleanup.

Fixes: 219d27d7147e0 ("scsi: qla2xxx: Fix race conditions in the code for aborting SCSI commands")
Cc: stable@vger.kernel.org # 5.2
Link: https://lore.kernel.org/r/20191105150657.8092-3-hmadhani@marvell.com
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/qla2xxx/qla_def.h | 1 +
drivers/scsi/qla2xxx/qla_init.c | 18 ++++++++++++++++++
2 files changed, 19 insertions(+)

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index bb1c7b2d0ac1f..674ee2afe2b52 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -543,6 +543,7 @@ typedef struct srb {
const char *name;
int iocbs;
struct qla_qpair *qpair;
+ struct srb *cmd_sp;
struct list_head elem;
u32 gen1; /* scratch */
u32 gen2; /* scratch */
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 5df604fae7593..a75a40b14140a 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -103,8 +103,22 @@ static void qla24xx_abort_iocb_timeout(void *data)
u32 handle;
unsigned long flags;

+ if (sp->cmd_sp)
+ ql_dbg(ql_dbg_async, sp->vha, 0x507c,
+ "Abort timeout - cmd hdl=%x, cmd type=%x hdl=%x, type=%x\n",
+ sp->cmd_sp->handle, sp->cmd_sp->type,
+ sp->handle, sp->type);
+ else
+ ql_dbg(ql_dbg_async, sp->vha, 0x507c,
+ "Abort timeout 2 - hdl=%x, type=%x\n",
+ sp->handle, sp->type);
+
spin_lock_irqsave(qpair->qp_lock_ptr, flags);
for (handle = 1; handle < qpair->req->num_outstanding_cmds; handle++) {
+ if (sp->cmd_sp && (qpair->req->outstanding_cmds[handle] ==
+ sp->cmd_sp))
+ qpair->req->outstanding_cmds[handle] = NULL;
+
/* removing the abort */
if (qpair->req->outstanding_cmds[handle] == sp) {
qpair->req->outstanding_cmds[handle] = NULL;
@@ -113,6 +127,9 @@ static void qla24xx_abort_iocb_timeout(void *data)
}
spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);

+ if (sp->cmd_sp)
+ sp->cmd_sp->done(sp->cmd_sp, QLA_OS_TIMER_EXPIRED);
+
abt->u.abt.comp_status = CS_TIMEOUT;
sp->done(sp, QLA_OS_TIMER_EXPIRED);
}
@@ -147,6 +164,7 @@ static int qla24xx_async_abort_cmd(srb_t *cmd_sp, bool wait)
sp->type = SRB_ABT_CMD;
sp->name = "abort";
sp->qpair = cmd_sp->qpair;
+ sp->cmd_sp = cmd_sp;
if (wait)
sp->flags = SRB_WAKEUP_ON_COMP;

--
2.20.1


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