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scsi: qla2xxx: Fix stuck login session using prli_pend_timer 

Session is stuck if driver sees FW has received a PRLI. Driver allows FW to
finish with processing of PRLI by checking back with FW at a later time to
see if the PRLI has finished. Instead, driver failed to push forward after
re-checking PRLI completion.

Fixes: ce0ba496dc ("scsi: qla2xxx: Fix stuck login session")
Cc: stable@vger.kernel.org # 5.3
Link: https://lore.kernel.org/r/20191217220617.28084-9-hmadhani@marvell.com
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Quinn Tran 2019-12-17 14:06:11 -08:00 committed by Martin K. Petersen
parent 3dae220595
commit 8aaac2d7da
3 changed files with 32 additions and 8 deletions
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5
drivers/scsi/qla2xxx/qla_def.h
View File

@ -2402,6 +2402,7 @@ typedef struct fc_port {
unsigned int scan_needed:1;
unsigned int n2n_flag:1;
unsigned int explicit_logout:1;
unsigned int prli_pend_timer:1;
struct completion nvme_del_done;
uint32_t nvme_prli_service_param;
@ -2428,6 +2429,7 @@ typedef struct fc_port {
struct work_struct free_work;
struct work_struct reg_work;
uint64_t jiffies_at_registration;
unsigned long prli_expired;
struct qlt_plogi_ack_t *plogi_link[QLT_PLOGI_LINK_MAX];
uint16_t tgt_id;
@ -4858,6 +4860,9 @@ struct sff_8247_a0 {
(ha->fc4_type_priority == FC4_PRIORITY_NVME)) || \
NVME_ONLY_TARGET(fcport)) \
#define PRLI_PHASE(_cls) \
((_cls == DSC_LS_PRLI_PEND) || (_cls == DSC_LS_PRLI_COMP))
#include "qla_target.h"
#include "qla_gbl.h"
#include "qla_dbg.h"

34
drivers/scsi/qla2xxx/qla_init.c
View File

@ -675,7 +675,7 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha,
port_id_t id;
u64 wwn;
u16 data[2];
u8 current_login_state;
u8 current_login_state, nvme_cls;
fcport = ea->fcport;
ql_dbg(ql_dbg_disc, vha, 0xffff,
@ -734,10 +734,17 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha,
loop_id = le16_to_cpu(e->nport_handle);
loop_id = (loop_id & 0x7fff);
if (NVME_TARGET(vha->hw, fcport))
current_login_state = e->current_login_state >> 4;
else
current_login_state = e->current_login_state & 0xf;
nvme_cls = e->current_login_state >> 4;
current_login_state = e->current_login_state & 0xf;
if (PRLI_PHASE(nvme_cls)) {
current_login_state = nvme_cls;
fcport->fc4_type &= ~FS_FC4TYPE_FCP;
fcport->fc4_type |= FS_FC4TYPE_NVME;
} else if (PRLI_PHASE(current_login_state)) {
fcport->fc4_type |= FS_FC4TYPE_FCP;
fcport->fc4_type &= ~FS_FC4TYPE_NVME;
}
ql_dbg(ql_dbg_disc, vha, 0x20e2,
"%s found %8phC CLS [%x|%x] fc4_type %d ID[%06x|%06x] lid[%d|%d]\n",
@ -1207,12 +1214,19 @@ qla24xx_async_prli(struct scsi_qla_host *vha, fc_port_t *fcport)
struct srb_iocb *lio;
int rval = QLA_FUNCTION_FAILED;
if (!vha->flags.online)
if (!vha->flags.online) {
ql_dbg(ql_dbg_disc, vha, 0xffff, "%s %d %8phC exit\n",
__func__, __LINE__, fcport->port_name);
return rval;
}
if (fcport->fw_login_state == DSC_LS_PLOGI_PEND ||
fcport->fw_login_state == DSC_LS_PRLI_PEND)
if ((fcport->fw_login_state == DSC_LS_PLOGI_PEND ||
fcport->fw_login_state == DSC_LS_PRLI_PEND) &&
qla_dual_mode_enabled(vha)) {
ql_dbg(ql_dbg_disc, vha, 0xffff, "%s %d %8phC exit\n",
__func__, __LINE__, fcport->port_name);
return rval;
}
sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
if (!sp)
@ -1591,6 +1605,10 @@ int qla24xx_fcport_handle_login(struct scsi_qla_host *vha, fc_port_t *fcport)
break;
default:
if (fcport->login_pause) {
ql_dbg(ql_dbg_disc, vha, 0x20d8,
"%s %d %8phC exit\n",
__func__, __LINE__,
fcport->port_name);
fcport->last_rscn_gen = fcport->rscn_gen;
fcport->last_login_gen = fcport->login_gen;
set_bit(RELOGIN_NEEDED, &vha->dpc_flags);

1
drivers/scsi/qla2xxx/qla_target.c
View File

@ -1258,6 +1258,7 @@ void qlt_schedule_sess_for_deletion(struct fc_port *sess)
sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
spin_unlock_irqrestore(&sess->vha->work_lock, flags);
sess->prli_pend_timer = 0;
qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
qla24xx_chk_fcp_state(sess);