From: Shyam Sundar ssundar@marvell.com
[ Upstream commit 27258a5771446f9c7edc929ecb76fe2c12c29d97 ]
This patch adds a shadow variable to hold disc_state history for the fcport and prints state transition when the logging is enabled.
Link: https://lore.kernel.org/r/20191217220617.28084-4-hmadhani@marvell.com Signed-off-by: Shyam Sundar ssundar@marvell.com Signed-off-by: Himanshu Madhani hmadhani@marvell.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/qla2xxx/qla_dbg.c | 2 +- drivers/scsi/qla2xxx/qla_def.h | 14 ++++++++++++++ drivers/scsi/qla2xxx/qla_gbl.h | 1 + drivers/scsi/qla2xxx/qla_gs.c | 2 +- drivers/scsi/qla2xxx/qla_init.c | 29 +++++++++++++++-------------- drivers/scsi/qla2xxx/qla_inline.h | 24 ++++++++++++++++++++++++ drivers/scsi/qla2xxx/qla_iocb.c | 7 ++++--- drivers/scsi/qla2xxx/qla_os.c | 2 +- drivers/scsi/qla2xxx/qla_target.c | 11 ++++++----- 9 files changed, 67 insertions(+), 25 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c index 7bbff91f8883..88a56e8480f7 100644 --- a/drivers/scsi/qla2xxx/qla_dbg.c +++ b/drivers/scsi/qla2xxx/qla_dbg.c @@ -18,7 +18,7 @@ * | Device Discovery | 0x2134 | 0x210e-0x2116 | * | | | 0x211a | * | | | 0x211c-0x2128 | - * | | | 0x212a-0x2130 | + * | | | 0x212a-0x2134 | * | Queue Command and IO tracing | 0x3074 | 0x300b | * | | | 0x3027-0x3028 | * | | | 0x303d-0x3041 | diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 894c2716b7ce..5e940543eaa1 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -2464,6 +2464,7 @@ typedef struct fc_port { struct qla_tgt_sess *tgt_session; struct ct_sns_desc ct_desc; enum discovery_state disc_state; + atomic_t shadow_disc_state; enum discovery_state next_disc_state; enum login_state fw_login_state; unsigned long dm_login_expire; @@ -2508,6 +2509,19 @@ struct event_arg {
extern const char *const port_state_str[5];
+static const char * const port_dstate_str[] = { + "DELETED", + "GNN_ID", + "GNL", + "LOGIN_PEND", + "LOGIN_FAILED", + "GPDB", + "UPD_FCPORT", + "LOGIN_COMPLETE", + "ADISC", + "DELETE_PEND" +}; + /* * FC port flags. */ diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 5b163ad85c34..5a3c47eed645 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -80,6 +80,7 @@ extern int qla24xx_async_gnl(struct scsi_qla_host *, fc_port_t *); int qla2x00_post_work(struct scsi_qla_host *vha, struct qla_work_evt *e); extern void *qla2x00_alloc_iocbs_ready(struct qla_qpair *, srb_t *); extern int qla24xx_update_fcport_fcp_prio(scsi_qla_host_t *, fc_port_t *); +extern int qla24xx_async_abort_cmd(srb_t *, bool);
extern void qla2x00_set_fcport_state(fc_port_t *fcport, int state); extern fc_port_t * diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c index ae13aabf280b..d9b5ea77fde9 100644 --- a/drivers/scsi/qla2xxx/qla_gs.c +++ b/drivers/scsi/qla2xxx/qla_gs.c @@ -4290,7 +4290,7 @@ int qla24xx_async_gnnid(scsi_qla_host_t *vha, fc_port_t *fcport) if (!vha->flags.online || (fcport->flags & FCF_ASYNC_SENT)) return rval;
- fcport->disc_state = DSC_GNN_ID; + qla2x00_set_fcport_disc_state(fcport, DSC_GNN_ID); sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); if (!sp) goto done; diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 5d2d0c287469..0aac1eb1e013 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -337,10 +337,10 @@ qla2x00_async_login(struct scsi_qla_host *vha, fc_port_t *fcport, if (!sp) goto done;
+ qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_PEND); fcport->flags |= FCF_ASYNC_SENT; fcport->logout_completed = 0;
- fcport->disc_state = DSC_LOGIN_PEND; sp->type = SRB_LOGIN_CMD; sp->name = "login"; sp->gen1 = fcport->rscn_gen; @@ -544,7 +544,7 @@ static int qla_post_els_plogi_work(struct scsi_qla_host *vha, fc_port_t *fcport)
e->u.fcport.fcport = fcport; fcport->flags |= FCF_ASYNC_ACTIVE; - fcport->disc_state = DSC_LOGIN_PEND; + qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_PEND); return qla2x00_post_work(vha, e); }
@@ -847,7 +847,8 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha, * with GNL. Push disc_state back to DELETED * so GNL can go out again */ - fcport->disc_state = DSC_DELETED; + qla2x00_set_fcport_disc_state(fcport, + DSC_DELETED); break; case DSC_LS_PRLI_COMP: if ((e->prli_svc_param_word_3[0] & BIT_4) == 0) @@ -923,7 +924,7 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha, qla24xx_fcport_handle_login(vha, fcport); break; case ISP_CFG_N: - fcport->disc_state = DSC_DELETED; + qla2x00_set_fcport_disc_state(fcport, DSC_DELETED); if (time_after_eq(jiffies, fcport->dm_login_expire)) { if (fcport->n2n_link_reset_cnt < 2) { fcport->n2n_link_reset_cnt++; @@ -1093,7 +1094,7 @@ int qla24xx_async_gnl(struct scsi_qla_host *vha, fc_port_t *fcport)
spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); fcport->flags |= FCF_ASYNC_SENT; - fcport->disc_state = DSC_GNL; + qla2x00_set_fcport_disc_state(fcport, DSC_GNL); fcport->last_rscn_gen = fcport->rscn_gen; fcport->last_login_gen = fcport->login_gen;
@@ -1316,12 +1317,12 @@ int qla24xx_async_gpdb(struct scsi_qla_host *vha, fc_port_t *fcport, u8 opt) return rval; }
- fcport->disc_state = DSC_GPDB; - sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL); if (!sp) goto done;
+ qla2x00_set_fcport_disc_state(fcport, DSC_GPDB); + fcport->flags |= FCF_ASYNC_SENT; sp->type = SRB_MB_IOCB; sp->name = "gpdb"; @@ -1400,7 +1401,7 @@ void __qla24xx_handle_gpdb_event(scsi_qla_host_t *vha, struct event_arg *ea) ql_dbg(ql_dbg_disc, vha, 0x20d6, "%s %d %8phC session revalidate success\n", __func__, __LINE__, ea->fcport->port_name); - ea->fcport->disc_state = DSC_LOGIN_COMPLETE; + qla2x00_set_fcport_disc_state(ea->fcport, DSC_LOGIN_COMPLETE); } spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); } @@ -1454,7 +1455,7 @@ void qla24xx_handle_gpdb_event(scsi_qla_host_t *vha, struct event_arg *ea) /* Set discovery state back to GNL to Relogin attempt */ if (qla_dual_mode_enabled(vha) || qla_ini_mode_enabled(vha)) { - fcport->disc_state = DSC_GNL; + qla2x00_set_fcport_disc_state(fcport, DSC_GNL); set_bit(RELOGIN_NEEDED, &vha->dpc_flags); } return; @@ -2013,7 +2014,7 @@ qla24xx_handle_plogi_done_event(struct scsi_qla_host *vha, struct event_arg *ea) __func__, __LINE__, ea->fcport->port_name, ea->data[1]);
ea->fcport->flags &= ~FCF_ASYNC_SENT; - ea->fcport->disc_state = DSC_LOGIN_FAILED; + qla2x00_set_fcport_disc_state(ea->fcport, DSC_LOGIN_FAILED); if (ea->data[1] & QLA_LOGIO_LOGIN_RETRIED) set_bit(RELOGIN_NEEDED, &vha->dpc_flags); else @@ -5393,7 +5394,7 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport) ql_dbg(ql_dbg_disc, vha, 0x20ef, "%s %8phC\n", __func__, fcport->port_name);
- fcport->disc_state = DSC_UPD_FCPORT; + qla2x00_set_fcport_disc_state(fcport, DSC_UPD_FCPORT); fcport->login_retry = vha->hw->login_retry_count; fcport->flags &= ~(FCF_LOGIN_NEEDED | FCF_ASYNC_SENT); fcport->deleted = 0; @@ -5413,7 +5414,7 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport)
if (NVME_TARGET(vha->hw, fcport)) { qla_nvme_register_remote(vha, fcport); - fcport->disc_state = DSC_LOGIN_COMPLETE; + qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); qla2x00_set_fcport_state(fcport, FCS_ONLINE); return; } @@ -5458,7 +5459,7 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport) } }
- fcport->disc_state = DSC_LOGIN_COMPLETE; + qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); }
void qla_register_fcport_fn(struct work_struct *work) @@ -5867,7 +5868,7 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *vha)
if (NVME_TARGET(vha->hw, fcport)) { if (fcport->disc_state == DSC_DELETE_PEND) { - fcport->disc_state = DSC_GNL; + qla2x00_set_fcport_disc_state(fcport, DSC_GNL); vha->fcport_count--; fcport->login_succ = 0; } diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h index af91e567a38d..477b0b8a5f4b 100644 --- a/drivers/scsi/qla2xxx/qla_inline.h +++ b/drivers/scsi/qla2xxx/qla_inline.h @@ -105,6 +105,30 @@ qla2x00_clean_dsd_pool(struct qla_hw_data *ha, struct crc_context *ctx) INIT_LIST_HEAD(&ctx->dsd_list); }
+static inline void +qla2x00_set_fcport_disc_state(fc_port_t *fcport, int state) +{ + int old_val; + uint8_t shiftbits, mask; + + /* This will have to change when the max no. of states > 16 */ + shiftbits = 4; + mask = (1 << shiftbits) - 1; + + fcport->disc_state = state; + while (1) { + old_val = atomic_read(&fcport->shadow_disc_state); + if (old_val == atomic_cmpxchg(&fcport->shadow_disc_state, + old_val, (old_val << shiftbits) | state)) { + ql_dbg(ql_dbg_disc, fcport->vha, 0x2134, + "FCPort %8phC disc_state transition: %s to %s - portid=%06x.\n", + fcport->port_name, port_dstate_str[old_val & mask], + port_dstate_str[state], fcport->d_id.b24); + return; + } + } +} + static inline int qla2x00_hba_err_chk_enabled(srb_t *sp) { diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index 53ccbd6b71ed..3f43410fab9d 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -2843,7 +2843,8 @@ static void qla2x00_els_dcmd2_sp_done(srb_t *sp, int res) fw_status[0], fw_status[1], fw_status[2]);
fcport->flags &= ~FCF_ASYNC_SENT; - fcport->disc_state = DSC_LOGIN_FAILED; + qla2x00_set_fcport_disc_state(fcport, + DSC_LOGIN_FAILED); set_bit(RELOGIN_NEEDED, &vha->dpc_flags); break; } @@ -2856,7 +2857,7 @@ static void qla2x00_els_dcmd2_sp_done(srb_t *sp, int res) fw_status[0], fw_status[1], fw_status[2]);
sp->fcport->flags &= ~FCF_ASYNC_SENT; - sp->fcport->disc_state = DSC_LOGIN_FAILED; + qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_FAILED); set_bit(RELOGIN_NEEDED, &vha->dpc_flags); break; } @@ -2893,7 +2894,7 @@ qla24xx_els_dcmd2_iocb(scsi_qla_host_t *vha, int els_opcode, }
fcport->flags |= FCF_ASYNC_SENT; - fcport->disc_state = DSC_LOGIN_PEND; + qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_PEND); elsio = &sp->u.iocb_cmd; ql_dbg(ql_dbg_io, vha, 0x3073, "Enter: PLOGI portid=%06x\n", fcport->d_id.b24); diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 899dfb445710..af8306a9777f 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -5014,7 +5014,7 @@ void qla24xx_sched_upd_fcport(fc_port_t *fcport) fcport->jiffies_at_registration = jiffies; fcport->sec_since_registration = 0; fcport->next_disc_state = DSC_DELETED; - fcport->disc_state = DSC_UPD_FCPORT; + qla2x00_set_fcport_disc_state(fcport, DSC_UPD_FCPORT); spin_unlock_irqrestore(&fcport->vha->work_lock, flags);
queue_work(system_unbound_wq, &fcport->reg_work); diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 5dbdae1f65af..594dfbeee376 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -596,7 +596,8 @@ static void qla2x00_async_nack_sp_done(srb_t *sp, int res) spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); } else { sp->fcport->login_retry = 0; - sp->fcport->disc_state = DSC_LOGIN_COMPLETE; + qla2x00_set_fcport_disc_state(sp->fcport, + DSC_LOGIN_COMPLETE); sp->fcport->deleted = 0; sp->fcport->logout_on_delete = 1; } @@ -1056,7 +1057,7 @@ void qlt_free_session_done(struct work_struct *work) tgt->sess_count--; }
- sess->disc_state = DSC_DELETED; + qla2x00_set_fcport_disc_state(sess, DSC_DELETED); sess->fw_login_state = DSC_LS_PORT_UNAVAIL; sess->deleted = QLA_SESS_DELETED;
@@ -1166,7 +1167,7 @@ void qlt_unreg_sess(struct fc_port *sess) vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; - sess->disc_state = DSC_DELETE_PEND; + qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); sess->last_rscn_gen = sess->rscn_gen; sess->last_login_gen = sess->login_gen;
@@ -1267,7 +1268,7 @@ 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->disc_state = DSC_DELETE_PEND; + qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND);
qla24xx_chk_fcp_state(sess);
@@ -6060,7 +6061,7 @@ static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, if (!IS_SW_RESV_ADDR(fcport->d_id)) vha->fcport_count++; fcport->login_gen++; - fcport->disc_state = DSC_LOGIN_COMPLETE; + qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); fcport->login_succ = 1; newfcport = 1; }