From: Himanshu Madhani <hmadhani@marvell.com>
To: <James.Bottomley@HansenPartnership.com>, <martin.petersen@oracle.com>
Cc: <hmadhani@marvell.com>, <linux-scsi@vger.kernel.org>
Subject: [PATCH v2 05/14] qla2xxx: Fix N2N link reset
Date: Thu, 12 Sep 2019 11:09:09 -0700 [thread overview]
Message-ID: <20190912180918.6436-6-hmadhani@marvell.com> (raw)
In-Reply-To: <20190912180918.6436-1-hmadhani@marvell.com>
From: Quinn Tran <qutran@marvell.com>
Fix stalled link recovery for N2N with FC-NVMe connection
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
---
drivers/scsi/qla2xxx/qla_def.h | 3 +-
drivers/scsi/qla2xxx/qla_init.c | 107 +++++++++++++++++++++++++++++-----------
drivers/scsi/qla2xxx/qla_mbx.c | 23 +++++++--
drivers/scsi/qla2xxx/qla_os.c | 4 ++
4 files changed, 103 insertions(+), 34 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index fa038568beb6..6ffa9877c28b 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2396,6 +2396,7 @@ typedef struct fc_port {
unsigned int query:1;
unsigned int id_changed:1;
unsigned int scan_needed:1;
+ unsigned int n2n_flag:1;
struct completion nvme_del_done;
uint32_t nvme_prli_service_param;
@@ -2446,7 +2447,6 @@ typedef struct fc_port {
uint8_t fc4_type;
uint8_t fc4f_nvme;
uint8_t scan_state;
- uint8_t n2n_flag;
unsigned long last_queue_full;
unsigned long last_ramp_up;
@@ -3036,6 +3036,7 @@ enum scan_flags_t {
enum fc4type_t {
FS_FC4TYPE_FCP = BIT_0,
FS_FC4TYPE_NVME = BIT_1,
+ FS_FCP_IS_N2N = BIT_7,
};
struct fab_scan_rp {
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index f6a5d78f93c9..67f522a8a9d4 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -746,12 +746,15 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha,
break;
default:
if ((id.b24 != fcport->d_id.b24 &&
- fcport->d_id.b24) ||
+ fcport->d_id.b24 &&
+ fcport->loop_id != FC_NO_LOOP_ID) ||
(fcport->loop_id != FC_NO_LOOP_ID &&
fcport->loop_id != loop_id)) {
ql_dbg(ql_dbg_disc, vha, 0x20e3,
"%s %d %8phC post del sess\n",
__func__, __LINE__, fcport->port_name);
+ if (fcport->n2n_flag)
+ fcport->d_id.b24 = 0;
qlt_schedule_sess_for_deletion(fcport);
return;
}
@@ -759,6 +762,8 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha,
}
fcport->loop_id = loop_id;
+ if (fcport->n2n_flag)
+ fcport->d_id.b24 = id.b24;
wwn = wwn_to_u64(fcport->port_name);
qlt_find_sess_invalidate_other(vha, wwn,
@@ -972,7 +977,7 @@ static void qla24xx_async_gnl_sp_done(srb_t *sp, int res)
wwn = wwn_to_u64(e->port_name);
ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x20e8,
- "%s %8phC %02x:%02x:%02x state %d/%d lid %x \n",
+ "%s %8phC %02x:%02x:%02x CLS %x/%x lid %x \n",
__func__, (void *)&wwn, e->port_id[2], e->port_id[1],
e->port_id[0], e->current_login_state, e->last_login_state,
(loop_id & 0x7fff));
@@ -1499,7 +1504,8 @@ int qla24xx_fcport_handle_login(struct scsi_qla_host *vha, fc_port_t *fcport)
(fcport->fw_login_state == DSC_LS_PRLI_PEND)))
return 0;
- if (fcport->fw_login_state == DSC_LS_PLOGI_COMP) {
+ if (fcport->fw_login_state == DSC_LS_PLOGI_COMP &&
+ !N2N_TOPO(vha->hw)) {
if (time_before_eq(jiffies, fcport->plogi_nack_done_deadline)) {
set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
return 0;
@@ -1570,8 +1576,9 @@ int qla24xx_fcport_handle_login(struct scsi_qla_host *vha, fc_port_t *fcport)
qla24xx_post_gpdb_work(vha, fcport, 0);
} else {
ql_dbg(ql_dbg_disc, vha, 0x2118,
- "%s %d %8phC post NVMe PRLI\n",
- __func__, __LINE__, fcport->port_name);
+ "%s %d %8phC post %s PRLI\n",
+ __func__, __LINE__, fcport->port_name,
+ fcport->fc4f_nvme ? "NVME" : "FC");
qla24xx_post_prli_work(vha, fcport);
}
break;
@@ -1853,17 +1860,38 @@ qla24xx_handle_prli_done_event(struct scsi_qla_host *vha, struct event_arg *ea)
break;
}
- if (ea->fcport->n2n_flag) {
+ if (ea->fcport->fc4f_nvme) {
ql_dbg(ql_dbg_disc, vha, 0x2118,
"%s %d %8phC post fc4 prli\n",
__func__, __LINE__, ea->fcport->port_name);
ea->fcport->fc4f_nvme = 0;
- ea->fcport->n2n_flag = 0;
qla24xx_post_prli_work(vha, ea->fcport);
+ return;
+ }
+
+ /* at this point both PRLI NVME & PRLI FCP failed */
+ if (N2N_TOPO(vha->hw)) {
+ if (ea->fcport->n2n_link_reset_cnt < 3) {
+ ea->fcport->n2n_link_reset_cnt++;
+ /*
+ * remote port is not sending Plogi. Reset
+ * link to kick start his state machine
+ */
+ set_bit(N2N_LINK_RESET, &vha->dpc_flags);
+ } else {
+ ql_log(ql_log_warn, vha, 0x2119,
+ "%s %d %8phC Unable to reconnect\n",
+ __func__, __LINE__, ea->fcport->port_name);
+ }
+ } else {
+ /*
+ * switch connect. login failed. Take connection
+ * down and allow relogin to retrigger
+ */
+ ea->fcport->flags &= ~FCF_ASYNC_SENT;
+ ea->fcport->keep_nport_handle = 0;
+ qlt_schedule_sess_for_deletion(ea->fcport);
}
- ql_dbg(ql_dbg_disc, vha, 0x2119,
- "%s %d %8phC unhandle event of %x\n",
- __func__, __LINE__, ea->fcport->port_name, ea->data[0]);
break;
}
}
@@ -5000,28 +5028,47 @@ qla2x00_configure_local_loop(scsi_qla_host_t *vha)
unsigned long flags;
/* Inititae N2N login. */
- if (test_and_clear_bit(N2N_LOGIN_NEEDED, &vha->dpc_flags)) {
- /* borrowing */
- u32 *bp, i, sz;
-
- memset(ha->init_cb, 0, ha->init_cb_size);
- sz = min_t(int, sizeof(struct els_plogi_payload),
- ha->init_cb_size);
- rval = qla24xx_get_port_login_templ(vha, ha->init_cb_dma,
- (void *)ha->init_cb, sz);
- if (rval == QLA_SUCCESS) {
- bp = (uint32_t *)ha->init_cb;
- for (i = 0; i < sz/4 ; i++, bp++)
- *bp = cpu_to_be32(*bp);
+ if (N2N_TOPO(ha)) {
+ if (test_and_clear_bit(N2N_LOGIN_NEEDED, &vha->dpc_flags)) {
+ /* borrowing */
+ u32 *bp, i, sz;
+
+ memset(ha->init_cb, 0, ha->init_cb_size);
+ sz = min_t(int, sizeof(struct els_plogi_payload),
+ ha->init_cb_size);
+ rval = qla24xx_get_port_login_templ(vha,
+ ha->init_cb_dma, (void *)ha->init_cb, sz);
+ if (rval == QLA_SUCCESS) {
+ bp = (uint32_t *)ha->init_cb;
+ for (i = 0; i < sz/4 ; i++, bp++)
+ *bp = cpu_to_be32(*bp);
- memcpy(&ha->plogi_els_payld.data, (void *)ha->init_cb,
- sizeof(ha->plogi_els_payld.data));
- set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
- } else {
- ql_dbg(ql_dbg_init, vha, 0x00d1,
- "PLOGI ELS param read fail.\n");
+ memcpy(&ha->plogi_els_payld.data,
+ (void *)ha->init_cb,
+ sizeof(ha->plogi_els_payld.data));
+ set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
+ } else {
+ ql_dbg(ql_dbg_init, vha, 0x00d1,
+ "PLOGI ELS param read fail.\n");
+ goto skip_login;
+ }
+ }
+
+ list_for_each_entry(fcport, &vha->vp_fcports, list) {
+ if (fcport->n2n_flag) {
+ qla24xx_fcport_handle_login(vha, fcport);
+ return QLA_SUCCESS;
+ }
+ }
+skip_login:
+ spin_lock_irqsave(&vha->work_lock, flags);
+ vha->scan.scan_retry++;
+ spin_unlock_irqrestore(&vha->work_lock, flags);
+
+ if (vha->scan.scan_retry < MAX_SCAN_RETRIES) {
+ set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
+ set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
}
- return QLA_SUCCESS;
}
found_devs = 0;
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 4c858e2d0ea8..6d6e10812b42 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -2249,7 +2249,7 @@ qla2x00_lip_reset(scsi_qla_host_t *vha)
mbx_cmd_t mc;
mbx_cmd_t *mcp = &mc;
- ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x105a,
+ ql_dbg(ql_dbg_disc, vha, 0x105a,
"Entered %s.\n", __func__);
if (IS_CNA_CAPABLE(vha->hw)) {
@@ -3883,14 +3883,23 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
case TOPO_N2N:
ha->current_topology = ISP_CFG_N;
spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
+ list_for_each_entry(fcport, &vha->vp_fcports, list) {
+ fcport->scan_state = QLA_FCPORT_SCAN;
+ fcport->n2n_flag = 0;
+ }
+
fcport = qla2x00_find_fcport_by_wwpn(vha,
rptid_entry->u.f1.port_name, 1);
spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
if (fcport) {
fcport->plogi_nack_done_deadline = jiffies + HZ;
- fcport->dm_login_expire = jiffies + 3*HZ;
+ fcport->dm_login_expire = jiffies + 2*HZ;
fcport->scan_state = QLA_FCPORT_FOUND;
+ fcport->n2n_flag = 1;
+ if (vha->flags.nvme_enabled)
+ fcport->fc4f_nvme = 1;
+
switch (fcport->disc_state) {
case DSC_DELETED:
set_bit(RELOGIN_NEEDED,
@@ -3924,7 +3933,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
rptid_entry->u.f1.port_name,
rptid_entry->u.f1.node_name,
NULL,
- FC4_TYPE_UNKNOWN);
+ FS_FCP_IS_N2N);
}
/* if our portname is higher then initiate N2N login */
@@ -4023,6 +4032,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
list_for_each_entry(fcport, &vha->vp_fcports, list) {
fcport->scan_state = QLA_FCPORT_SCAN;
+ fcport->n2n_flag = 0;
}
fcport = qla2x00_find_fcport_by_wwpn(vha,
@@ -4032,6 +4042,13 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
fcport->login_retry = vha->hw->login_retry_count;
fcport->plogi_nack_done_deadline = jiffies + HZ;
fcport->scan_state = QLA_FCPORT_FOUND;
+ fcport->n2n_flag = 1;
+ fcport->d_id.b.domain =
+ rptid_entry->u.f2.remote_nport_id[2];
+ fcport->d_id.b.area =
+ rptid_entry->u.f2.remote_nport_id[1];
+ fcport->d_id.b.al_pa =
+ rptid_entry->u.f2.remote_nport_id[0];
}
}
}
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 5eda86ff6606..8411dd5acd43 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -5033,6 +5033,10 @@ void qla24xx_create_new_sess(struct scsi_qla_host *vha, struct qla_work_evt *e)
memcpy(fcport->port_name, e->u.new_sess.port_name,
WWN_SIZE);
+
+ if (e->u.new_sess.fc4_type & FS_FCP_IS_N2N)
+ fcport->n2n_flag = 1;
+
} else {
ql_dbg(ql_dbg_disc, vha, 0xffff,
"%s %8phC mem alloc fail.\n",
--
2.12.0
next prev parent reply other threads:[~2019-09-12 18:09 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-12 18:09 [PATCH v2 00/14] qla2xxx: Bug fixes for the driver Himanshu Madhani
2019-09-12 18:09 ` [PATCH v2 01/14] qla2xxx: Silence fwdump template message Himanshu Madhani
2019-09-12 18:09 ` [PATCH v2 02/14] qla2xxx: Fix unbound sleep in fcport delete path Himanshu Madhani
2019-09-30 15:54 ` Bart Van Assche
2019-09-12 18:09 ` [PATCH v2 03/14] qla2xxx: Fix stale mem access on driver unload Himanshu Madhani
2019-09-12 18:09 ` [PATCH v2 04/14] qla2xxx: Optimize NPIV tear down process Himanshu Madhani
2019-09-26 10:52 ` Martin Wilck
2019-09-26 16:56 ` [EXT] " Quinn Tran
2019-09-27 6:33 ` Martin Wilck
2019-09-12 18:09 ` Himanshu Madhani [this message]
2019-09-12 18:09 ` [PATCH v2 06/14] qla2xxx: Fix N2N link up fail Himanshu Madhani
2019-09-12 18:09 ` [PATCH v2 07/14] qla2xxx: Fix Nport ID display value Himanshu Madhani
2019-09-13 22:32 ` Roman Bolshakov
2019-09-12 18:09 ` [PATCH v2 08/14] qla2xxx: Dual FCP-NVMe target port support Himanshu Madhani
2019-10-10 2:27 ` Martin K. Petersen
2019-09-12 18:09 ` [PATCH v2 09/14] qla2xxx: Add error handling for PLOGI ELS passthrough Himanshu Madhani
2019-09-12 18:09 ` [PATCH v2 10/14] qla2xxx: Set remove flag for all VP Himanshu Madhani
2019-09-12 18:09 ` [PATCH v2 11/14] qla2xxx: Check for MB timeout while capturing ISP27/28xx FW dump Himanshu Madhani
2019-09-12 20:22 ` Laurence Oberman
2019-09-12 18:09 ` [PATCH v2 12/14] qla2xxx: Capture FW dump on MPI heartbeat stop event Himanshu Madhani
2019-09-12 20:22 ` Laurence Oberman
2019-09-12 18:09 ` [PATCH v2 13/14] qla2xxx: Improve logging for scan thread Himanshu Madhani
2019-09-12 18:09 ` [PATCH v2 14/14] qla2xxx: Update driver version to 10.01.00.20-k Himanshu Madhani
2019-09-24 3:13 ` [PATCH v2 00/14] qla2xxx: Bug fixes for the driver Martin K. Petersen
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