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qla2x00t-32gbit: Fix losing target when it reappears during delete

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FC target disappeared during port perturbation tests due to a race that
tramples target state.  Fix the issue by adding state checks before
proceeding.

Link: https://lore.kernel.org/r/20220616053508.27186-8-njavali@marvell.com
Fixes: 44c57f205876 ("scsi: qla2xxx: Changes to support FCP2 Target")
Cc: stable@vger.kernel.org
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[ commit 118b0c863c8f upstream ]
This commit is contained in:
Gleb Chesnokov
2022-08-08 18:51:50 +03:00
parent d3d046017b
commit 67f37540fa
1 changed files with 17 additions and 7 deletions
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24
qla2x00t-32gbit/qla_attr.c
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@@ -2785,17 +2785,24 @@ qla2x00_dev_loss_tmo_callbk(struct fc_rport *rport)
if (!fcport)
return;
/* Now that the rport has been deleted, set the fcport state to
FCS_DEVICE_DEAD */
qla2x00_set_fcport_state(fcport, FCS_DEVICE_DEAD);
/*
* Now that the rport has been deleted, set the fcport state to
* FCS_DEVICE_DEAD, if the fcport is still lost.
*/
if (fcport->scan_state != QLA_FCPORT_FOUND)
qla2x00_set_fcport_state(fcport, FCS_DEVICE_DEAD);
/*
* Transport has effectively 'deleted' the rport, clear
* all local references.
*/
spin_lock_irqsave(host->host_lock, flags);
fcport->rport = fcport->drport = NULL;
*((fc_port_t **)rport->dd_data) = NULL;
/* Confirm port has not reappeared before clearing pointers. */
if (rport->port_state != FC_PORTSTATE_ONLINE) {
fcport->rport = fcport->drport = NULL;
*((fc_port_t **)rport->dd_data) = NULL;
}
spin_unlock_irqrestore(host->host_lock, flags);
if (test_bit(ABORT_ISP_ACTIVE, &fcport->vha->dpc_flags))
@@ -2828,9 +2835,12 @@ qla2x00_terminate_rport_io(struct fc_rport *rport)
/*
* At this point all fcport's software-states are cleared. Perform any
* final cleanup of firmware resources (PCBs and XCBs).
*
* Attempt to cleanup only lost devices.
*/
if (fcport->loop_id != FC_NO_LOOP_ID) {
if (IS_FWI2_CAPABLE(fcport->vha->hw)) {
if (IS_FWI2_CAPABLE(fcport->vha->hw) &&
fcport->scan_state != QLA_FCPORT_FOUND) {
if (fcport->loop_id != FC_NO_LOOP_ID)
fcport->logout_on_delete = 1;
@@ -2840,7 +2850,7 @@ qla2x00_terminate_rport_io(struct fc_rport *rport)
__LINE__);
qlt_schedule_sess_for_deletion(fcport);
}
} else {
} else if (!IS_FWI2_CAPABLE(fcport->vha->hw)) {
qla2x00_port_logout(fcport->vha, fcport);
}
}