From: Quinn Tran <quinn.t...@cavium.com>
In case of N2N connect, when sg_regset for bus/device/host
was causing driver and firmware state to go out of sync.
This patch fixes this link instablity when reconnect is
attempted after link flap.
Signed-off-by: Quinn Tran <quinn.t...@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madh...@cavium.com>
---
drivers/scsi/qla2xxx/qla_def.h | 3 +-
drivers/scsi/qla2xxx/qla_init.c | 226 +++++++++++++++++++++++++-------------
drivers/scsi/qla2xxx/qla_iocb.c | 15 ++-
drivers/scsi/qla2xxx/qla_isr.c | 3 +-
drivers/scsi/qla2xxx/qla_mbx.c | 27 +----
drivers/scsi/qla2xxx/qla_os.c | 5 +
drivers/scsi/qla2xxx/qla_target.c | 9 ++
7 files changed, 180 insertions(+), 108 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 9442e18aef6f..ee4d1f4fdf95 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -377,6 +377,7 @@ struct srb_iocb {
#define SRB_LOGIN_COND_PLOGI BIT_1
#define SRB_LOGIN_SKIP_PRLI BIT_2
#define SRB_LOGIN_NVME_PRLI BIT_3
+#define SRB_LOGIN_PRLI_ONLY BIT_4
uint16_t data[2];
u32 iop[2];
} logio;
@@ -4236,7 +4237,7 @@ typedef struct scsi_qla_host {
#define FCOE_CTX_RESET_NEEDED 18 /* Initiate FCoE context reset */
#define MPI_RESET_NEEDED 19 /* Initiate MPI FW reset */
#define ISP_QUIESCE_NEEDED 20 /* Driver need some quiescence */
-#define FREE_BIT 21
+#define N2N_LINK_RESET 21
#define PORT_UPDATE_NEEDED 22
#define FX00_RESET_RECOVERY 23
#define FX00_TARGET_SCAN 24
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 1de78697dc0d..17c679102fcc 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -160,6 +160,22 @@ qla2x00_async_login_sp_done(void *ptr, int res)
sp->free(sp);
}
+static inline bool
+fcport_is_smaller(fc_port_t *fcport)
+{
+ if (wwn_to_u64(fcport->port_name) <
+ wwn_to_u64(fcport->vha->port_name))
+ return true;
+ else
+ return false;
+}
+
+static inline bool
+fcport_is_bigger(fc_port_t *fcport)
+{
+ return !fcport_is_smaller(fcport);
+}
+
int
qla2x00_async_login(struct scsi_qla_host *vha, fc_port_t *fcport,
uint16_t *data)
@@ -189,13 +205,18 @@ qla2x00_async_login(struct scsi_qla_host *vha, fc_port_t
*fcport,
qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);
sp->done = qla2x00_async_login_sp_done;
- lio->u.logio.flags |= SRB_LOGIN_COND_PLOGI;
+ if (N2N_TOPO(fcport->vha->hw) && fcport_is_bigger(fcport)) {
+ lio->u.logio.flags |= SRB_LOGIN_PRLI_ONLY;
+ } else {
+ lio->u.logio.flags |= SRB_LOGIN_COND_PLOGI;
- if (fcport->fc4f_nvme)
- lio->u.logio.flags |= SRB_LOGIN_SKIP_PRLI;
+ if (fcport->fc4f_nvme)
+ lio->u.logio.flags |= SRB_LOGIN_SKIP_PRLI;
+
+ if (data[1] & QLA_LOGIO_LOGIN_RETRIED)
+ lio->u.logio.flags |= SRB_LOGIN_RETRIED;
+ }
- if (data[1] & QLA_LOGIO_LOGIN_RETRIED)
- lio->u.logio.flags |= SRB_LOGIN_RETRIED;
rval = qla2x00_start_sp(sp);
if (rval != QLA_SUCCESS) {
fcport->flags |= FCF_LOGIN_NEEDED;
@@ -497,15 +518,18 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t
*vha,
for (i = 0; i < n; i++) {
e = &vha->gnl.l[i];
wwn = wwn_to_u64(e->port_name);
+ id.b.domain = e->port_id[2];
+ id.b.area = e->port_id[1];
+ id.b.al_pa = e->port_id[0];
+ id.b.rsvd_1 = 0;
if (memcmp((u8 *)&wwn, fcport->port_name, WWN_SIZE))
continue;
+ if (IS_SW_RESV_ADDR(id))
+ continue;
+
found = 1;
- id.b.domain = e->port_id[2];
- id.b.area = e->port_id[1];
- id.b.al_pa = e->port_id[0];
- id.b.rsvd_1 = 0;
loop_id = le16_to_cpu(e->nport_handle);
loop_id = (loop_id & 0x7fff);
@@ -518,14 +542,18 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t
*vha,
fcport->d_id.b.domain, fcport->d_id.b.area,
fcport->d_id.b.al_pa, loop_id, fcport->loop_id);
- if ((id.b24 != fcport->d_id.b24) ||
- ((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);
- qlt_schedule_sess_for_deletion(fcport);
- return;
+ switch (fcport->disc_state) {
+ case DSC_DELETE_PEND:
+ case DSC_DELETED:
+ break;
+ default:
+ if ((id.b24 != fcport->d_id.b24) ||
+ ((fcport->loop_id != FC_NO_LOOP_ID) &&
+ (fcport->loop_id != loop_id))) {
+ qlt_schedule_sess_for_deletion(fcport);
+ return;
+ }
+ break;
}
fcport->loop_id = loop_id;
@@ -544,66 +572,121 @@ static void
qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha,
fcport->login_pause = 1;
}
- if (fcport->fc4f_nvme)
+ if (fcport->fc4f_nvme)
current_login_state = e->current_login_state >> 4;
else
current_login_state = e->current_login_state & 0xf;
- switch (current_login_state) {
- case DSC_LS_PRLI_COMP:
- ql_dbg(ql_dbg_disc, vha, 0x20e4,
- "%s %d %8phC post gpdb\n",
- __func__, __LINE__, fcport->port_name);
+ switch (vha->hw->current_topology) {
+ default:
+ switch (current_login_state) {
+ case DSC_LS_PRLI_COMP:
+ ql_dbg(ql_dbg_disc + ql_dbg_verbose,
+ vha, 0x20e4, "%s %d %8phC post gpdb\n",
+ __func__, __LINE__, fcport->port_name);
- if ((e->prli_svc_param_word_3[0] & BIT_4) == 0)
- fcport->port_type = FCT_INITIATOR;
- else
- fcport->port_type = FCT_TARGET;
+ if ((e->prli_svc_param_word_3[0] & BIT_4) == 0)
+ fcport->port_type = FCT_INITIATOR;
+ else
+ fcport->port_type = FCT_TARGET;
+ data[0] = data[1] = 0;
+ qla2x00_post_async_adisc_work(vha, fcport,
+ data);
+ break;
+ case DSC_LS_PORT_UNAVAIL:
+ default:
+ if (fcport->loop_id != FC_NO_LOOP_ID)
+ qla2x00_clear_loop_id(fcport);
- data[0] = data[1] = 0;
- qla2x00_post_async_adisc_work(vha, fcport, data);
- break;
- case DSC_LS_PORT_UNAVAIL:
- default:
- if (fcport->loop_id == FC_NO_LOOP_ID) {
- qla2x00_find_new_loop_id(vha, fcport);
+ fcport->loop_id = loop_id;
fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
+ qla24xx_fcport_handle_login(vha, fcport);
+ break;
}
- ql_dbg(ql_dbg_disc, vha, 0x20e5,
- "%s %d %8phC\n",
- __func__, __LINE__, fcport->port_name);
- qla24xx_fcport_handle_login(vha, fcport);
break;
- }
+ case ISP_CFG_N:
+ switch (current_login_state) {
+ case DSC_LS_PRLI_COMP:
+ if ((e->prli_svc_param_word_3[0] & BIT_4) == 0)
+ fcport->port_type = FCT_INITIATOR;
+ else
+ fcport->port_type = FCT_TARGET;
+
+ data[0] = data[1] = 0;
+ qla2x00_post_async_adisc_work(vha, fcport,
+ data);
+ break;
+ case DSC_LS_PLOGI_COMP:
+ if (fcport_is_bigger(fcport)) {
+ /* local adapter is smaller */
+ if (fcport->loop_id != FC_NO_LOOP_ID)
+ qla2x00_clear_loop_id(fcport);
+
+ fcport->loop_id = loop_id;
+ qla24xx_fcport_handle_login(vha,
+ fcport);
+ break;
+ }
+ /* drop through */
+ default:
+ if (fcport_is_smaller(fcport)) {
+ /* local adapter is bigger */
+ if (fcport->loop_id != FC_NO_LOOP_ID)
+ qla2x00_clear_loop_id(fcport);
+
+ fcport->loop_id = loop_id;
+ qla24xx_fcport_handle_login(vha,
+ fcport);
+ }
+ break;
+ }
+ break;
+ } /* switch (ha->current_topology) */
}
if (!found) {
- /* fw has no record of this port */
- for (i = 0; i < n; i++) {
- e = &vha->gnl.l[i];
- id.b.domain = e->port_id[0];
- id.b.area = e->port_id[1];
- id.b.al_pa = e->port_id[2];
- id.b.rsvd_1 = 0;
- loop_id = le16_to_cpu(e->nport_handle);
-
- if (fcport->d_id.b24 == id.b24) {
- conflict_fcport =
- qla2x00_find_fcport_by_wwpn(vha,
- e->port_name, 0);
- ql_dbg(ql_dbg_disc, vha, 0x20e6,
- "%s %d %8phC post del sess\n",
- __func__, __LINE__,
- conflict_fcport->port_name);
- qlt_schedule_sess_for_deletion
- (conflict_fcport);
+ switch (vha->hw->current_topology) {
+ case ISP_CFG_F:
+ case ISP_CFG_FL:
+ for (i = 0; i < n; i++) {
+ e = &vha->gnl.l[i];
+ id.b.domain = e->port_id[0];
+ id.b.area = e->port_id[1];
+ id.b.al_pa = e->port_id[2];
+ id.b.rsvd_1 = 0;
+ loop_id = le16_to_cpu(e->nport_handle);
+
+ if (fcport->d_id.b24 == id.b24) {
+ conflict_fcport =
+ qla2x00_find_fcport_by_wwpn(vha,
+ e->port_name, 0);
+ ql_dbg(ql_dbg_disc + ql_dbg_verbose,
+ "%s %d %8phC post del sess\n",
+ __func__, __LINE__,
+ conflict_fcport->port_name);
+ qlt_schedule_sess_for_deletion
+ (conflict_fcport);
+ }
+ /*
+ * FW already picked this loop id for
+ * another fcport
+ */
+ if (fcport->loop_id == loop_id)
+ fcport->loop_id = FC_NO_LOOP_ID;
}
-
- /* FW already picked this loop id for another fcport */
- if (fcport->loop_id == loop_id)
- fcport->loop_id = FC_NO_LOOP_ID;
+ qla24xx_fcport_handle_login(vha, fcport);
+ break;
+ case ISP_CFG_N:
+ /*
+ * FW handles the initial login for n2n.
+ * Do link reinit to trigger this auto login.
+ */
+ set_bit(N2N_LINK_RESET, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+ break;
+ default:
+ break;
}
- qla24xx_fcport_handle_login(vha, fcport);
}
} /* gnl_event */
@@ -4590,20 +4673,10 @@ qla2x00_configure_loop(scsi_qla_host_t *vha)
} else if (ha->current_topology == ISP_CFG_N) {
clear_bit(RSCN_UPDATE, &flags);
- if (ha->flags.rida_fmt2) {
- /* With Rida Format 2, the login is already triggered.
- * We know who is on the other side of the wire.
- * No need to login to do login to find out or drop into
- * qla2x00_configure_local_loop().
- */
+ if (qla_tgt_mode_enabled(vha)) {
+ /* allow the other side to start the login */
clear_bit(LOCAL_LOOP_UPDATE, &flags);
set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
- } else {
- if (qla_tgt_mode_enabled(vha)) {
- /* allow the other side to start the login */
- clear_bit(LOCAL_LOOP_UPDATE, &flags);
- set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
- }
}
} else if (ha->current_topology == ISP_CFG_NL) {
clear_bit(RSCN_UPDATE, &flags);
@@ -7929,8 +8002,7 @@ qla81xx_nvram_config(scsi_qla_host_t *vha)
}
/* enable RIDA Format2 */
- if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
- icb->firmware_options_3 |= BIT_0;
+ icb->firmware_options_3 |= BIT_0;
if (IS_QLA27XX(ha)) {
icb->firmware_options_3 |= BIT_8;
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index b349e9b94c08..e1ff2e27e59f 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -2240,12 +2240,15 @@ qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx
*logio)
struct srb_iocb *lio = &sp->u.iocb_cmd;
logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
- logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
-
- if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI)
- logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
- if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI)
- logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
+ if (lio->u.logio.flags & SRB_LOGIN_PRLI_ONLY) {
+ logio->control_flags = cpu_to_le16(LCF_COMMAND_PRLI);
+ } else {
+ logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
+ if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI)
+ logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
+ if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI)
+ logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
+ }
logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
logio->port_id[0] = sp->fcport->d_id.b.al_pa;
logio->port_id[1] = sp->fcport->d_id.b.area;
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 9fa5a2557f2c..e90fb17d2121 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -908,7 +908,8 @@ qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que
*rsp, uint16_t *mb)
if (!atomic_read(&vha->loop_down_timer))
atomic_set(&vha->loop_down_timer,
LOOP_DOWN_TIME);
- qla2x00_mark_all_devices_lost(vha, 1);
+ if (!N2N_TOPO(ha))
+ qla2x00_mark_all_devices_lost(vha, 1);
}
if (vha->vp_idx) {
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 7e875f575229..4e42ce057a37 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -2177,7 +2177,10 @@ qla2x00_lip_reset(scsi_qla_host_t *vha)
mcp->out_mb = MBX_2|MBX_1|MBX_0;
} else if (IS_FWI2_CAPABLE(vha->hw)) {
mcp->mb[0] = MBC_LIP_FULL_LOGIN;
- mcp->mb[1] = BIT_6;
+ if (N2N_TOPO(vha->hw))
+ mcp->mb[1] = BIT_4; /* re-init */
+ else
+ mcp->mb[1] = BIT_6; /* LIP */
mcp->mb[2] = 0;
mcp->mb[3] = vha->hw->loop_reset_delay;
mcp->out_mb = MBX_3|MBX_2|MBX_1|MBX_0;
@@ -3911,28 +3914,6 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
if (fcport) {
fcport->plogi_nack_done_deadline = jiffies + HZ;
fcport->scan_state = QLA_FCPORT_FOUND;
- switch (fcport->disc_state) {
- case DSC_DELETED:
- ql_dbg(ql_dbg_disc, vha, 0x210d,
- "%s %d %8phC login\n",
- __func__, __LINE__, fcport->port_name);
- qla24xx_fcport_handle_login(vha, fcport);
- break;
- case DSC_DELETE_PEND:
- break;
- default:
- qlt_schedule_sess_for_deletion(fcport);
- break;
- }
- } else {
- id.b.al_pa = rptid_entry->u.f2.remote_nport_id[0];
- id.b.area = rptid_entry->u.f2.remote_nport_id[1];
- id.b.domain = rptid_entry->u.f2.remote_nport_id[2];
- qla24xx_post_newsess_work(vha, &id,
- rptid_entry->u.f2.port_name,
- rptid_entry->u.f2.node_name,
- NULL,
- FC4_TYPE_UNKNOWN);
}
}
}
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index e881fce7477a..eb804e2feedf 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -6186,6 +6186,11 @@ qla2x00_do_dpc(void *data)
if (!IS_QLAFX00(ha))
qla2x00_do_dpc_all_vps(base_vha);
+ if (test_and_clear_bit(N2N_LINK_RESET,
+ &base_vha->dpc_flags)) {
+ qla2x00_lip_reset(base_vha);
+ }
+
ha->dpc_active = 0;
end_loop:
set_current_state(TASK_INTERRUPTIBLE);
diff --git a/drivers/scsi/qla2xxx/qla_target.c
b/drivers/scsi/qla2xxx/qla_target.c
index 3de11153d1d3..9d10989ed027 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -805,6 +805,10 @@ qlt_plogi_ack_find_add(struct scsi_qla_host *vha,
port_id_t *id,
list_for_each_entry(pla, &vha->plogi_ack_list, list) {
if (pla->id.b24 == id->b24) {
+ ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d,
+ "%s %d %8phC Term INOT due to new INOT",
+ __func__, __LINE__,
+ pla->iocb.u.isp24.port_name);
qlt_send_term_imm_notif(vha, &pla->iocb, 1);
memcpy(&pla->iocb, iocb, sizeof(pla->iocb));
return pla;
@@ -1073,6 +1077,7 @@ void qlt_free_session_done(struct work_struct *work)
struct qlt_plogi_ack_t *con =
sess->plogi_link[QLT_PLOGI_LINK_CONFLICT];
struct imm_ntfy_from_isp *iocb;
+ own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN];
if (con) {
iocb = &con->iocb;
@@ -4716,6 +4721,10 @@ static int qlt_handle_login(struct scsi_qla_host *vha,
pla = qlt_plogi_ack_find_add(vha, &port_id, iocb);
if (!pla) {
+ ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff,
+ "%s %d %8phC Term INOT due to mem alloc fail",
+ __func__, __LINE__,
+ iocb->u.isp24.port_name);
qlt_send_term_imm_notif(vha, iocb, 1);
goto out;
}
--
2.12.0
