From: Quinn Tran <qutran@marvell.com>

Date: Mon, 6 Jun 2022 21:46:26 -0700

Subject: scsi: qla2xxx: edif: Fix n2n login retry for secure device

Patch-mainline: v5.20-rc1

Git-commit: aec55325ddec975216119da000092cb8664a3399

References: bsc#1201958

After initiator has burned up all login retries, target authentication

application begins to run. This triggers a link bounce on target side.

Initiator will attempt another login. Due to N2N, the PRLI [nvme | fcp] can

fail because of the mode mismatch with target. This patch add a few more

login retries to revive the connection.

Link: https://lore.kernel.org/r/20220607044627.19563-11-njavali@marvell.com

Fixes: 4de067e5df12 ("scsi: qla2xxx: edif: Add N2N support for EDIF")

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>

Acked-by: Daniel Wagner <dwagner@suse.de>

---

 drivers/scsi/qla2xxx/qla_init.c |    7 +++++++

 1 file changed, 7 insertions(+)

--- a/drivers/scsi/qla2xxx/qla_init.c

+++ b/drivers/scsi/qla2xxx/qla_init.c

@@ -2126,6 +2126,13 @@ qla24xx_handle_prli_done_event(struct sc

 		}

 		if (N2N_TOPO(vha->hw)) {

+			if (ea->fcport->n2n_link_reset_cnt ==

+			    vha->hw->login_retry_count &&

+			    ea->fcport->flags & FCF_FCSP_DEVICE) {

+				/* remote authentication app just started */

+				ea->fcport->n2n_link_reset_cnt = 0;

+			}

+

 			if (ea->fcport->n2n_link_reset_cnt <

 			    vha->hw->login_retry_count) {

 				ea->fcport->n2n_link_reset_cnt++;