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    Subject[PATCH 5.19 0589/1157] scsi: qla2xxx: edif: Fix n2n login retry for secure device
    Date
    From: Quinn Tran <qutran@marvell.com>

    [ Upstream commit aec55325ddec975216119da000092cb8664a3399 ]

    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>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/scsi/qla2xxx/qla_init.c | 7 +++++++
    1 file changed, 7 insertions(+)

    diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
    index 5f077f9217e5..177ce45b76a6 100644
    --- a/drivers/scsi/qla2xxx/qla_init.c
    +++ b/drivers/scsi/qla2xxx/qla_init.c
    @@ -2123,6 +2123,13 @@ qla24xx_handle_prli_done_event(struct scsi_qla_host *vha, struct event_arg *ea)
    }

    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++;
    --
    2.35.1


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