[PATCH 5.15 574/917] scsi: qla2xxx: edif: Use link event to wake up app

Greg Kroah-Hartman
2021-11-16T00:33:02Z

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