diff options
author | Krishna Gudipati <kgudipat@brocade.com> | 2011-07-21 00:02:11 (GMT) |
---|---|---|
committer | James Bottomley <JBottomley@Parallels.com> | 2011-07-27 10:48:52 (GMT) |
commit | 37ea0558b87abb151245bc750070a4dcda490aca (patch) | |
tree | 352d00d22b8f9c91ace2dc8d72dc465deb6ffa7b /drivers/scsi | |
parent | 42a8e6e298f39518445785c53a16357267db37ef (diff) | |
download | linux-fsl-qoriq-37ea0558b87abb151245bc750070a4dcda490aca.tar.xz |
[SCSI] bfa: Added support to collect and reset fcport stats
- Added support to collect and reset fcport stats.
- Modified design to allow multiple requests for fcport stats.
- fcport will remember the stats request in its stats_pending
queue and service each of the queued requests after receiving
a firmware response for the prior request.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r-- | drivers/scsi/bfa/bfa.h | 21 | ||||
-rw-r--r-- | drivers/scsi/bfa/bfa_core.c | 10 | ||||
-rw-r--r-- | drivers/scsi/bfa/bfa_ioc.h | 2 | ||||
-rw-r--r-- | drivers/scsi/bfa/bfa_svc.c | 130 | ||||
-rw-r--r-- | drivers/scsi/bfa/bfa_svc.h | 14 | ||||
-rw-r--r-- | drivers/scsi/bfa/bfad_bsg.c | 55 | ||||
-rw-r--r-- | drivers/scsi/bfa/bfad_bsg.h | 9 |
7 files changed, 172 insertions, 69 deletions
diff --git a/drivers/scsi/bfa/bfa.h b/drivers/scsi/bfa/bfa.h index 6e3869a..32f4626 100644 --- a/drivers/scsi/bfa/bfa.h +++ b/drivers/scsi/bfa/bfa.h @@ -27,6 +27,7 @@ struct bfa_s; typedef void (*bfa_isr_func_t) (struct bfa_s *bfa, struct bfi_msg_s *m); +typedef void (*bfa_cb_cbfn_status_t) (void *cbarg, bfa_status_t status); /* * Interrupt message handlers @@ -121,6 +122,7 @@ bfa_reqq_winit(struct bfa_reqq_wait_s *wqe, void (*qresume) (void *cbarg), #define bfa_cb_queue(__bfa, __hcb_qe, __cbfn, __cbarg) do { \ (__hcb_qe)->cbfn = (__cbfn); \ (__hcb_qe)->cbarg = (__cbarg); \ + (__hcb_qe)->pre_rmv = BFA_FALSE; \ list_add_tail(&(__hcb_qe)->qe, &(__bfa)->comp_q); \ } while (0) @@ -135,6 +137,11 @@ bfa_reqq_winit(struct bfa_reqq_wait_s *wqe, void (*qresume) (void *cbarg), } \ } while (0) +#define bfa_cb_queue_status(__bfa, __hcb_qe, __status) do { \ + (__hcb_qe)->fw_status = (__status); \ + list_add_tail(&(__hcb_qe)->qe, &(__bfa)->comp_q); \ +} while (0) + #define bfa_cb_queue_done(__hcb_qe) do { \ (__hcb_qe)->once = BFA_FALSE; \ } while (0) @@ -408,4 +415,18 @@ void bfa_iocfc_disable(struct bfa_s *bfa); #define bfa_timer_start(_bfa, _timer, _timercb, _arg, _timeout) \ bfa_timer_begin(&(_bfa)->timer_mod, _timer, _timercb, _arg, _timeout) +struct bfa_cb_pending_q_s { + struct bfa_cb_qe_s hcb_qe; + void *data; /* Driver buffer */ +}; + +/* Common macros to operate on pending stats/attr apis */ +#define bfa_pending_q_init(__qe, __cbfn, __cbarg, __data) do { \ + bfa_q_qe_init(&((__qe)->hcb_qe.qe)); \ + (__qe)->hcb_qe.cbfn = (__cbfn); \ + (__qe)->hcb_qe.cbarg = (__cbarg); \ + (__qe)->hcb_qe.pre_rmv = BFA_TRUE; \ + (__qe)->data = (__data); \ +} while (0) + #endif /* __BFA_H__ */ diff --git a/drivers/scsi/bfa/bfa_core.c b/drivers/scsi/bfa/bfa_core.c index 0c23696..4613bdd 100644 --- a/drivers/scsi/bfa/bfa_core.c +++ b/drivers/scsi/bfa/bfa_core.c @@ -1533,10 +1533,17 @@ bfa_comp_process(struct bfa_s *bfa, struct list_head *comp_q) struct list_head *qe; struct list_head *qen; struct bfa_cb_qe_s *hcb_qe; + bfa_cb_cbfn_status_t cbfn; list_for_each_safe(qe, qen, comp_q) { hcb_qe = (struct bfa_cb_qe_s *) qe; - hcb_qe->cbfn(hcb_qe->cbarg, BFA_TRUE); + if (hcb_qe->pre_rmv) { + /* qe is invalid after return, dequeue before cbfn() */ + list_del(qe); + cbfn = (bfa_cb_cbfn_status_t)(hcb_qe->cbfn); + cbfn(hcb_qe->cbarg, hcb_qe->fw_status); + } else + hcb_qe->cbfn(hcb_qe->cbarg, BFA_TRUE); } } @@ -1549,6 +1556,7 @@ bfa_comp_free(struct bfa_s *bfa, struct list_head *comp_q) while (!list_empty(comp_q)) { bfa_q_deq(comp_q, &qe); hcb_qe = (struct bfa_cb_qe_s *) qe; + WARN_ON(hcb_qe->pre_rmv); hcb_qe->cbfn(hcb_qe->cbarg, BFA_FALSE); } } diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h index 28bf6e1..a7463c9 100644 --- a/drivers/scsi/bfa/bfa_ioc.h +++ b/drivers/scsi/bfa/bfa_ioc.h @@ -367,6 +367,8 @@ struct bfa_cb_qe_s { struct list_head qe; bfa_cb_cbfn_t cbfn; bfa_boolean_t once; + bfa_boolean_t pre_rmv; /* set for stack based qe(s) */ + bfa_status_t fw_status; /* to access fw status in comp proc */ void *cbarg; }; diff --git a/drivers/scsi/bfa/bfa_svc.c b/drivers/scsi/bfa/bfa_svc.c index 6e1ed9a..9884d6e 100644 --- a/drivers/scsi/bfa/bfa_svc.c +++ b/drivers/scsi/bfa/bfa_svc.c @@ -2910,6 +2910,9 @@ bfa_fcport_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg, port_cfg->trl_def_speed = BFA_PORT_SPEED_1GBPS; + INIT_LIST_HEAD(&fcport->stats_pending_q); + INIT_LIST_HEAD(&fcport->statsclr_pending_q); + bfa_reqq_winit(&fcport->reqq_wait, bfa_fcport_qresume, fcport); } @@ -3138,30 +3141,38 @@ bfa_fcport_fcoe_stats_swap(struct bfa_fcoe_stats_s *d, static void __bfa_cb_fcport_stats_get(void *cbarg, bfa_boolean_t complete) { - struct bfa_fcport_s *fcport = cbarg; + struct bfa_fcport_s *fcport = (struct bfa_fcport_s *)cbarg; + struct bfa_cb_pending_q_s *cb; + struct list_head *qe, *qen; + union bfa_fcport_stats_u *ret; if (complete) { - if (fcport->stats_status == BFA_STATUS_OK) { - struct timeval tv; - - /* Swap FC QoS or FCoE stats */ - if (bfa_ioc_get_fcmode(&fcport->bfa->ioc)) { - bfa_fcport_qos_stats_swap( - &fcport->stats_ret->fcqos, - &fcport->stats->fcqos); - } else { - bfa_fcport_fcoe_stats_swap( - &fcport->stats_ret->fcoe, - &fcport->stats->fcoe); - - do_gettimeofday(&tv); - fcport->stats_ret->fcoe.secs_reset = + struct timeval tv; + if (fcport->stats_status == BFA_STATUS_OK) + do_gettimeofday(&tv); + + list_for_each_safe(qe, qen, &fcport->stats_pending_q) { + bfa_q_deq(&fcport->stats_pending_q, &qe); + cb = (struct bfa_cb_pending_q_s *)qe; + if (fcport->stats_status == BFA_STATUS_OK) { + ret = (union bfa_fcport_stats_u *)cb->data; + /* Swap FC QoS or FCoE stats */ + if (bfa_ioc_get_fcmode(&fcport->bfa->ioc)) + bfa_fcport_qos_stats_swap(&ret->fcqos, + &fcport->stats->fcqos); + else { + bfa_fcport_fcoe_stats_swap(&ret->fcoe, + &fcport->stats->fcoe); + ret->fcoe.secs_reset = tv.tv_sec - fcport->stats_reset_time; + } } + bfa_cb_queue_status(fcport->bfa, &cb->hcb_qe, + fcport->stats_status); } - fcport->stats_cbfn(fcport->stats_cbarg, fcport->stats_status); + fcport->stats_status = BFA_STATUS_OK; } else { - fcport->stats_busy = BFA_FALSE; + INIT_LIST_HEAD(&fcport->stats_pending_q); fcport->stats_status = BFA_STATUS_OK; } } @@ -3179,8 +3190,7 @@ bfa_fcport_stats_get_timeout(void *cbarg) } fcport->stats_status = BFA_STATUS_ETIMER; - bfa_cb_queue(fcport->bfa, &fcport->hcb_qe, __bfa_cb_fcport_stats_get, - fcport); + __bfa_cb_fcport_stats_get(fcport, BFA_TRUE); } static void @@ -3210,7 +3220,9 @@ bfa_fcport_send_stats_get(void *cbarg) static void __bfa_cb_fcport_stats_clr(void *cbarg, bfa_boolean_t complete) { - struct bfa_fcport_s *fcport = cbarg; + struct bfa_fcport_s *fcport = (struct bfa_fcport_s *) cbarg; + struct bfa_cb_pending_q_s *cb; + struct list_head *qe, *qen; if (complete) { struct timeval tv; @@ -3220,10 +3232,15 @@ __bfa_cb_fcport_stats_clr(void *cbarg, bfa_boolean_t complete) */ do_gettimeofday(&tv); fcport->stats_reset_time = tv.tv_sec; - - fcport->stats_cbfn(fcport->stats_cbarg, fcport->stats_status); + list_for_each_safe(qe, qen, &fcport->statsclr_pending_q) { + bfa_q_deq(&fcport->statsclr_pending_q, &qe); + cb = (struct bfa_cb_pending_q_s *)qe; + bfa_cb_queue_status(fcport->bfa, &cb->hcb_qe, + fcport->stats_status); + } + fcport->stats_status = BFA_STATUS_OK; } else { - fcport->stats_busy = BFA_FALSE; + INIT_LIST_HEAD(&fcport->statsclr_pending_q); fcport->stats_status = BFA_STATUS_OK; } } @@ -3241,8 +3258,7 @@ bfa_fcport_stats_clr_timeout(void *cbarg) } fcport->stats_status = BFA_STATUS_ETIMER; - bfa_cb_queue(fcport->bfa, &fcport->hcb_qe, - __bfa_cb_fcport_stats_clr, fcport); + __bfa_cb_fcport_stats_clr(fcport, BFA_TRUE); } static void @@ -3462,28 +3478,26 @@ bfa_fcport_isr(struct bfa_s *bfa, struct bfi_msg_s *msg) /* * check for timer pop before processing the rsp */ - if (fcport->stats_busy == BFA_FALSE || - fcport->stats_status == BFA_STATUS_ETIMER) + if (list_empty(&fcport->stats_pending_q) || + (fcport->stats_status == BFA_STATUS_ETIMER)) break; bfa_timer_stop(&fcport->timer); fcport->stats_status = i2hmsg.pstatsget_rsp->status; - bfa_cb_queue(fcport->bfa, &fcport->hcb_qe, - __bfa_cb_fcport_stats_get, fcport); + __bfa_cb_fcport_stats_get(fcport, BFA_TRUE); break; case BFI_FCPORT_I2H_STATS_CLEAR_RSP: /* * check for timer pop before processing the rsp */ - if (fcport->stats_busy == BFA_FALSE || - fcport->stats_status == BFA_STATUS_ETIMER) + if (list_empty(&fcport->statsclr_pending_q) || + (fcport->stats_status == BFA_STATUS_ETIMER)) break; bfa_timer_stop(&fcport->timer); fcport->stats_status = BFA_STATUS_OK; - bfa_cb_queue(fcport->bfa, &fcport->hcb_qe, - __bfa_cb_fcport_stats_clr, fcport); + __bfa_cb_fcport_stats_clr(fcport, BFA_TRUE); break; case BFI_FCPORT_I2H_ENABLE_AEN: @@ -3815,25 +3829,25 @@ bfa_fcport_get_attr(struct bfa_s *bfa, struct bfa_port_attr_s *attr) * Fetch port statistics (FCQoS or FCoE). */ bfa_status_t -bfa_fcport_get_stats(struct bfa_s *bfa, union bfa_fcport_stats_u *stats, - bfa_cb_port_t cbfn, void *cbarg) +bfa_fcport_get_stats(struct bfa_s *bfa, struct bfa_cb_pending_q_s *cb) { struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa); - if (fcport->stats_busy) { - bfa_trc(bfa, fcport->stats_busy); - return BFA_STATUS_DEVBUSY; - } + if (bfa_ioc_is_disabled(&bfa->ioc)) + return BFA_STATUS_IOC_DISABLED; - fcport->stats_busy = BFA_TRUE; - fcport->stats_ret = stats; - fcport->stats_cbfn = cbfn; - fcport->stats_cbarg = cbarg; + if (!list_empty(&fcport->statsclr_pending_q)) + return BFA_STATUS_DEVBUSY; - bfa_fcport_send_stats_get(fcport); + if (list_empty(&fcport->stats_pending_q)) { + list_add_tail(&cb->hcb_qe.qe, &fcport->stats_pending_q); + bfa_fcport_send_stats_get(fcport); + bfa_timer_start(bfa, &fcport->timer, + bfa_fcport_stats_get_timeout, + fcport, BFA_FCPORT_STATS_TOV); + } else + list_add_tail(&cb->hcb_qe.qe, &fcport->stats_pending_q); - bfa_timer_start(bfa, &fcport->timer, bfa_fcport_stats_get_timeout, - fcport, BFA_FCPORT_STATS_TOV); return BFA_STATUS_OK; } @@ -3841,27 +3855,25 @@ bfa_fcport_get_stats(struct bfa_s *bfa, union bfa_fcport_stats_u *stats, * Reset port statistics (FCQoS or FCoE). */ bfa_status_t -bfa_fcport_clear_stats(struct bfa_s *bfa, bfa_cb_port_t cbfn, void *cbarg) +bfa_fcport_clear_stats(struct bfa_s *bfa, struct bfa_cb_pending_q_s *cb) { struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa); - if (fcport->stats_busy) { - bfa_trc(bfa, fcport->stats_busy); + if (!list_empty(&fcport->stats_pending_q)) return BFA_STATUS_DEVBUSY; - } - fcport->stats_busy = BFA_TRUE; - fcport->stats_cbfn = cbfn; - fcport->stats_cbarg = cbarg; + if (list_empty(&fcport->statsclr_pending_q)) { + list_add_tail(&cb->hcb_qe.qe, &fcport->statsclr_pending_q); + bfa_fcport_send_stats_clear(fcport); + bfa_timer_start(bfa, &fcport->timer, + bfa_fcport_stats_clr_timeout, + fcport, BFA_FCPORT_STATS_TOV); + } else + list_add_tail(&cb->hcb_qe.qe, &fcport->statsclr_pending_q); - bfa_fcport_send_stats_clear(fcport); - - bfa_timer_start(bfa, &fcport->timer, bfa_fcport_stats_clr_timeout, - fcport, BFA_FCPORT_STATS_TOV); return BFA_STATUS_OK; } - /* * Fetch port attributes. */ diff --git a/drivers/scsi/bfa/bfa_svc.h b/drivers/scsi/bfa/bfa_svc.h index fbe513a..01db352 100644 --- a/drivers/scsi/bfa/bfa_svc.h +++ b/drivers/scsi/bfa/bfa_svc.h @@ -441,7 +441,6 @@ void bfa_lps_isr(struct bfa_s *bfa, struct bfi_msg_s *msg); */ #define BFA_FCPORT(_bfa) (&((_bfa)->modules.port)) -typedef void (*bfa_cb_port_t) (void *cbarg, enum bfa_status status); /* * Link notification data structure @@ -495,13 +494,11 @@ struct bfa_fcport_s { u8 *stats_kva; u64 stats_pa; union bfa_fcport_stats_u *stats; - union bfa_fcport_stats_u *stats_ret; /* driver stats location */ bfa_status_t stats_status; /* stats/statsclr status */ - bfa_boolean_t stats_busy; /* outstanding stats/statsclr */ + struct list_head stats_pending_q; + struct list_head statsclr_pending_q; bfa_boolean_t stats_qfull; u32 stats_reset_time; /* stats reset time stamp */ - bfa_cb_port_t stats_cbfn; /* driver callback function */ - void *stats_cbarg; /* *!< user callback arg */ bfa_boolean_t diag_busy; /* diag busy status */ bfa_boolean_t beacon; /* port beacon status */ bfa_boolean_t link_e2e_beacon; /* link beacon status */ @@ -552,10 +549,9 @@ void bfa_fcport_beacon(void *dev, bfa_boolean_t beacon, bfa_boolean_t link_e2e_beacon); bfa_boolean_t bfa_fcport_is_linkup(struct bfa_s *bfa); bfa_status_t bfa_fcport_get_stats(struct bfa_s *bfa, - union bfa_fcport_stats_u *stats, - bfa_cb_port_t cbfn, void *cbarg); -bfa_status_t bfa_fcport_clear_stats(struct bfa_s *bfa, bfa_cb_port_t cbfn, - void *cbarg); + struct bfa_cb_pending_q_s *cb); +bfa_status_t bfa_fcport_clear_stats(struct bfa_s *bfa, + struct bfa_cb_pending_q_s *cb); bfa_boolean_t bfa_fcport_is_qos_enabled(struct bfa_s *bfa); bfa_boolean_t bfa_fcport_is_trunk_enabled(struct bfa_s *bfa); bfa_status_t bfa_fcport_is_pbcdisabled(struct bfa_s *bfa); diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c index 26def66..0d920ed 100644 --- a/drivers/scsi/bfa/bfad_bsg.c +++ b/drivers/scsi/bfa/bfad_bsg.c @@ -2023,6 +2023,55 @@ bfad_iocmd_itnim_get_ioprofile(struct bfad_s *bfad, void *cmd) return 0; } +int +bfad_iocmd_fcport_get_stats(struct bfad_s *bfad, void *cmd) +{ + struct bfa_bsg_fcport_stats_s *iocmd = + (struct bfa_bsg_fcport_stats_s *)cmd; + struct bfad_hal_comp fcomp; + unsigned long flags; + struct bfa_cb_pending_q_s cb_qe; + + init_completion(&fcomp.comp); + bfa_pending_q_init(&cb_qe, (bfa_cb_cbfn_t)bfad_hcb_comp, + &fcomp, &iocmd->stats); + spin_lock_irqsave(&bfad->bfad_lock, flags); + iocmd->status = bfa_fcport_get_stats(&bfad->bfa, &cb_qe); + spin_unlock_irqrestore(&bfad->bfad_lock, flags); + if (iocmd->status != BFA_STATUS_OK) { + bfa_trc(bfad, iocmd->status); + goto out; + } + wait_for_completion(&fcomp.comp); + iocmd->status = fcomp.status; +out: + return 0; +} + +int +bfad_iocmd_fcport_reset_stats(struct bfad_s *bfad, void *cmd) +{ + struct bfa_bsg_gen_s *iocmd = (struct bfa_bsg_gen_s *)cmd; + struct bfad_hal_comp fcomp; + unsigned long flags; + struct bfa_cb_pending_q_s cb_qe; + + init_completion(&fcomp.comp); + bfa_pending_q_init(&cb_qe, (bfa_cb_cbfn_t)bfad_hcb_comp, &fcomp, NULL); + + spin_lock_irqsave(&bfad->bfad_lock, flags); + iocmd->status = bfa_fcport_clear_stats(&bfad->bfa, &cb_qe); + spin_unlock_irqrestore(&bfad->bfad_lock, flags); + if (iocmd->status != BFA_STATUS_OK) { + bfa_trc(bfad, iocmd->status); + goto out; + } + wait_for_completion(&fcomp.comp); + iocmd->status = fcomp.status; +out: + return 0; +} + static int bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd, unsigned int payload_len) @@ -2291,6 +2340,12 @@ bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd, case IOCMD_ITNIM_GET_IOPROFILE: rc = bfad_iocmd_itnim_get_ioprofile(bfad, iocmd); break; + case IOCMD_FCPORT_GET_STATS: + rc = bfad_iocmd_fcport_get_stats(bfad, iocmd); + break; + case IOCMD_FCPORT_RESET_STATS: + rc = bfad_iocmd_fcport_reset_stats(bfad, iocmd); + break; default: rc = -EINVAL; break; diff --git a/drivers/scsi/bfa/bfad_bsg.h b/drivers/scsi/bfa/bfad_bsg.h index 91cb212..f64f3ee 100644 --- a/drivers/scsi/bfa/bfad_bsg.h +++ b/drivers/scsi/bfa/bfad_bsg.h @@ -119,6 +119,8 @@ enum { IOCMD_FCPIM_PROFILE_ON, IOCMD_FCPIM_PROFILE_OFF, IOCMD_ITNIM_GET_IOPROFILE, + IOCMD_FCPORT_GET_STATS, + IOCMD_FCPORT_RESET_STATS, }; struct bfa_bsg_gen_s { @@ -150,6 +152,13 @@ struct bfa_bsg_itnim_ioprofile_s { struct bfa_itnim_ioprofile_s ioprofile; }; +struct bfa_bsg_fcport_stats_s { + bfa_status_t status; + u16 bfad_num; + u16 rsvd; + union bfa_fcport_stats_u stats; +}; + struct bfa_bsg_ioc_name_s { bfa_status_t status; u16 bfad_num; |