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    Subject[PATCH 5.15 574/917] scsi: qla2xxx: edif: Use link event to wake up app
    Date
    From: Quinn Tran <qutran@marvell.com>

    [ Upstream commit 527d46e0b0147f2b32b78ba49c6a231835b24a41 ]

    Authentication application may be running and in the past tried to probe
    driver (app_start) but was unsuccessful. This could be due to the bsg layer
    not being ready to service the request. On a successful link up, driver
    will use the netlink Link Up event to notify the app to retry the app_start
    call.

    In another case, app does not poll for new NPIV host. This link up event
    would notify app of the presence of a new SCSI host.

    Link: https://lore.kernel.org/r/20210908164622.19240-6-njavali@marvell.com
    Fixes: 4de067e5df12 ("scsi: qla2xxx: edif: Add N2N support for EDIF")
    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: Sasha Levin <sashal@kernel.org>
    ---
    drivers/scsi/qla2xxx/qla_init.c | 15 +++++++--------
    1 file changed, 7 insertions(+), 8 deletions(-)

    diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
    index 5fc7697f0af4c..7e64e4730b259 100644
    --- a/drivers/scsi/qla2xxx/qla_init.c
    +++ b/drivers/scsi/qla2xxx/qla_init.c
    @@ -5335,15 +5335,14 @@ qla2x00_configure_loop(scsi_qla_host_t *vha)
    "LOOP READY.\n");
    ha->flags.fw_init_done = 1;

    + /*
    + * use link up to wake up app to get ready for
    + * authentication.
    + */
    if (ha->flags.edif_enabled &&
    - !(vha->e_dbell.db_flags & EDB_ACTIVE) &&
    - N2N_TOPO(vha->hw)) {
    - /*
    - * use port online to wake up app to get ready
    - * for authentication
    - */
    - qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, 0);
    - }
    + !(vha->e_dbell.db_flags & EDB_ACTIVE))
    + qla2x00_post_aen_work(vha, FCH_EVT_LINKUP,
    + ha->link_data_rate);

    /*
    * Process any ATIO queue entries that came in
    --
    2.33.0


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