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scsi: qla2xxx: Reduce false trigger to login

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commit d2646eed7b19a206912f49101178cbbaa507256c upstream.

While a session is in the middle of a relogin, a late RSCN can be delivered
from switch. RSCN trigger fabric scan where the scan logic can trigger
another session login while a login is in progress.  Reduce the extra
trigger to prevent multiple logins to the same session.

Link: https://lore.kernel.org/r/20220310092604.22950-10-njavali@marvell.com
Fixes: bee8b84686 ("scsi: qla2xxx: Reduce redundant ADISC command for RSCNs")
Cc: stable@vger.kernel.org
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Quinn Tran 2022-03-10 01:26:00 -08:00 committed by Greg Kroah-Hartman
parent 7f9ce17a1d
commit af744ef8f1
1 changed files with 3 additions and 2 deletions
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5
drivers/scsi/qla2xxx/qla_init.c
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@ -1557,7 +1557,8 @@ int qla24xx_fcport_handle_login(struct scsi_qla_host *vha, fc_port_t *fcport)
fcport->conflict, fcport->last_rscn_gen, fcport->rscn_gen, fcport->conflict, fcport->last_rscn_gen, fcport->rscn_gen,
fcport->login_gen, fcport->loop_id, fcport->scan_state); fcport->login_gen, fcport->loop_id, fcport->scan_state);
if (fcport->scan_state != QLA_FCPORT_FOUND) if (fcport->scan_state != QLA_FCPORT_FOUND ||
fcport->disc_state == DSC_DELETE_PEND)
return 0; return 0;
if ((fcport->loop_id != FC_NO_LOOP_ID) && if ((fcport->loop_id != FC_NO_LOOP_ID) &&
@ -1578,7 +1579,7 @@ int qla24xx_fcport_handle_login(struct scsi_qla_host *vha, fc_port_t *fcport)
if (vha->host->active_mode == MODE_TARGET) if (vha->host->active_mode == MODE_TARGET)
return 0; return 0;
if (fcport->flags & FCF_ASYNC_SENT) { if (fcport->flags & (FCF_ASYNC_SENT | FCF_ASYNC_ACTIVE)) {
set_bit(RELOGIN_NEEDED, &vha->dpc_flags); set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
return 0; return 0;
} }