[PATCH 5.18 0553/1095] scsi: qla2xxx: edif: Add retry for ELS passthrough

Greg Kroah-Hartman
2022-08-15T21:29:47Z

From: Quinn Tran <qutran@marvell.com>

[ Upstream commit 0b3f3143d473b489a7aa0779c43bcdb344bd3014 ]

Relating to EDIF, when sending IKE message, updating key or deleting key,
driver can encounter IOCB queue full. Add additional retries to reduce
higher level recovery.

Link: https://lore.kernel.org/r/20220607044627.19563-8-njavali@marvell.com
Fixes: dd30706e73b7 ("scsi: qla2xxx: edif: Add key update")
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_edif.c | 52 +++++++++++++++++++++++----------
drivers/scsi/qla2xxx/qla_os.c | 2 +-
2 files changed, 38 insertions(+), 16 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_edif.c b/drivers/scsi/qla2xxx/qla_edif.c
index 166647d4ab27..ce893ddb13df 100644
--- a/drivers/scsi/qla2xxx/qla_edif.c
+++ b/drivers/scsi/qla2xxx/qla_edif.c
@@ -1468,6 +1468,8 @@ qla24xx_check_sadb_avail_slot(struct bsg_job *bsg_job, fc_port_t *fcport,

#define QLA_SA_UPDATE_FLAGS_RX_KEY 0x0
#define QLA_SA_UPDATE_FLAGS_TX_KEY 0x2
+#define EDIF_MSLEEP_INTERVAL 100
+#define EDIF_RETRY_COUNT 50

int
qla24xx_sadb_update(struct bsg_job *bsg_job)
@@ -1480,7 +1482,7 @@ qla24xx_sadb_update(struct bsg_job *bsg_job)
struct edif_list_entry *edif_entry = NULL;
int found = 0;
int rval = 0;
- int result = 0;
+ int result = 0, cnt;
struct qla_sa_update_frame sa_frame;
struct srb_iocb *iocb_cmd;
port_id_t portid;
@@ -1721,11 +1723,23 @@ qla24xx_sadb_update(struct bsg_job *bsg_job)
sp->done = qla2x00_bsg_job_done;
iocb_cmd = &sp->u.iocb_cmd;
iocb_cmd->u.sa_update.sa_frame = sa_frame;
-
+ cnt = 0;
+retry:
rval = qla2x00_start_sp(sp);
- if (rval != QLA_SUCCESS) {
+ switch (rval) {
+ case QLA_SUCCESS:
+ break;
+ case EAGAIN:
+ msleep(EDIF_MSLEEP_INTERVAL);
+ cnt++;
+ if (cnt < EDIF_RETRY_COUNT)
+ goto retry;
+
+ fallthrough;
+ default:
ql_log(ql_dbg_edif, vha, 0x70e3,
- "qla2x00_start_sp failed=%d.\n", rval);
+ "%s qla2x00_start_sp failed=%d.\n",
+ __func__, rval);

qla2x00_rel_sp(sp);
rval = -EIO;
@@ -2399,7 +2413,6 @@ qla24xx_issue_sa_replace_iocb(scsi_qla_host_t *vha, struct qla_work_evt *e)
rval = qla2x00_start_sp(sp);

if (rval != QLA_SUCCESS) {
- rval = QLA_FUNCTION_FAILED;
goto done_free_sp;
}

@@ -3531,7 +3544,7 @@ int qla_edif_process_els(scsi_qla_host_t *vha, struct bsg_job *bsg_job)
fc_port_t *fcport = NULL;
struct qla_hw_data *ha = vha->hw;
srb_t *sp;
- int rval = (DID_ERROR << 16);
+ int rval = (DID_ERROR << 16), cnt;
port_id_t d_id;
struct qla_bsg_auth_els_request *p =
(struct qla_bsg_auth_els_request *)bsg_job->request;
@@ -3626,17 +3639,26 @@ int qla_edif_process_els(scsi_qla_host_t *vha, struct bsg_job *bsg_job)
sp->free = qla2x00_bsg_sp_free;
sp->done = qla2x00_bsg_job_done;

+ cnt = 0;
+retry:
rval = qla2x00_start_sp(sp);
-
- ql_dbg(ql_dbg_edif, vha, 0x700a,
- "%s %s %8phN xchg %x ctlflag %x hdl %x reqlen %xh bsg ptr %p\n",
- __func__, sc_to_str(p->e.sub_cmd), fcport->port_name,
- p->e.extra_rx_xchg_address, p->e.extra_control_flags,
- sp->handle, sp->remap.req.len, bsg_job);
-
- if (rval != QLA_SUCCESS) {
+ switch (rval) {
+ case QLA_SUCCESS:
+ ql_dbg(ql_dbg_edif, vha, 0x700a,
+ "%s %s %8phN xchg %x ctlflag %x hdl %x reqlen %xh bsg ptr %p\n",
+ __func__, sc_to_str(p->e.sub_cmd), fcport->port_name,
+ p->e.extra_rx_xchg_address, p->e.extra_control_flags,
+ sp->handle, sp->remap.req.len, bsg_job);
+ break;
+ case EAGAIN:
+ msleep(EDIF_MSLEEP_INTERVAL);
+ cnt++;
+ if (cnt < EDIF_RETRY_COUNT)
+ goto retry;
+ fallthrough;
+ default:
ql_log(ql_log_warn, vha, 0x700e,
- "qla2x00_start_sp failed = %d\n", rval);
+ "%s qla2x00_start_sp failed = %d\n", __func__, rval);
SET_DID_STATUS(bsg_reply->result, DID_IMM_RETRY);
rval = -EIO;
goto done_free_remap_rsp;
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 762229d495a8..3c68dad00d04 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -5473,7 +5473,7 @@ qla2x00_do_work(struct scsi_qla_host *vha)
e->u.fcport.fcport, false);
break;
case QLA_EVT_SA_REPLACE:
- qla24xx_issue_sa_replace_iocb(vha, e);
+ rc = qla24xx_issue_sa_replace_iocb(vha, e);
break;
}

--
2.35.1