[PATCH AUTOSEL 6.2 11/30] scsi: qla2xxx: Add option to disable FC2 Target support

Sasha Levin
2023-03-20T00:55:44Z

From: Daniel Wagner <dwagner@suse.de>

[ Upstream commit 877b03795fcf29ff2e2351f7e574ecc9b9c51732 ]

Commit 44c57f205876 ("scsi: qla2xxx: Changes to support FCP2 Target") added
support for FC2 Targets. Unfortunately, there are older setups which break
with this new feature enabled.

Allow to disable it via module option.

Link: https://lore.kernel.org/r/20230208152014.109214-1-dwagner@suse.de
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/qla2xxx/qla_gbl.h | 1 +
drivers/scsi/qla2xxx/qla_init.c | 3 ++-
drivers/scsi/qla2xxx/qla_os.c | 10 +++++++++-
3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index e3256e721be14..ee54207fc5319 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -192,6 +192,7 @@ extern int ql2xsecenable;
extern int ql2xenforce_iocb_limit;
extern int ql2xabts_wait_nvme;
extern u32 ql2xnvme_queues;
+extern int ql2xfc2target;

extern int qla2x00_loop_reset(scsi_qla_host_t *);
extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int);
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 8f2a968793913..d506eb3a9b639 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -1841,7 +1841,8 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
case RSCN_PORT_ADDR:
fcport = qla2x00_find_fcport_by_nportid(vha, &ea->id, 1);
if (fcport) {
- if (fcport->flags & FCF_FCP2_DEVICE &&
+ if (ql2xfc2target &&
+ fcport->flags & FCF_FCP2_DEVICE &&
atomic_read(&fcport->state) == FCS_ONLINE) {
ql_dbg(ql_dbg_disc, vha, 0x2115,
"Delaying session delete for FCP2 portid=%06x %8phC ",
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 2d86f804872bf..0dc50b1b3dde5 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -360,6 +360,13 @@ MODULE_PARM_DESC(ql2xnvme_queues,
"1 - Minimum number of queues supported\n"
"8 - Default value");

+int ql2xfc2target = 1;
+module_param(ql2xfc2target, int, 0444);
+MODULE_PARM_DESC(qla2xfc2target,
+ "Enables FC2 Target support. "
+ "0 - FC2 Target support is disabled. "
+ "1 - FC2 Target support is enabled (default).");
+
static struct scsi_transport_template *qla2xxx_transport_template = NULL;
struct scsi_transport_template *qla2xxx_transport_vport_template = NULL;

@@ -4075,7 +4082,8 @@ qla2x00_mark_all_devices_lost(scsi_qla_host_t *vha)
"Mark all dev lost\n");

list_for_each_entry(fcport, &vha->vp_fcports, list) {
- if (fcport->loop_id != FC_NO_LOOP_ID &&
+ if (ql2xfc2target &&
+ fcport->loop_id != FC_NO_LOOP_ID &&
(fcport->flags & FCF_FCP2_DEVICE) &&
fcport->port_type == FCT_TARGET &&
!qla2x00_reset_active(vha)) {
--
2.39.2