diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_hbadisc.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_hbadisc.c | 372 |
1 files changed, 242 insertions, 130 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index c81c2b3228d6..dc042bd97baa 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -57,6 +57,7 @@ static uint8_t lpfcAlpaArray[] = { }; static void lpfc_disc_timeout_handler(struct lpfc_vport *); +static void lpfc_disc_flush_list(struct lpfc_vport *vport); void lpfc_terminate_rport_io(struct fc_rport *rport) @@ -107,20 +108,14 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) struct lpfc_nodelist * ndlp; struct lpfc_vport *vport; struct lpfc_hba *phba; - struct completion devloss_compl; struct lpfc_work_evt *evtp; + int put_node; + int put_rport; rdata = rport->dd_data; ndlp = rdata->pnode; - - if (!ndlp) { - if (rport->scsi_target_id != -1) { - printk(KERN_ERR "Cannot find remote node" - " for rport in dev_loss_tmo_callbk x%x\n", - rport->port_id); - } + if (!ndlp) return; - } vport = ndlp->vport; phba = vport->phba; @@ -129,15 +124,35 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) "rport devlosscb: sid:x%x did:x%x flg:x%x", ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); - init_completion(&devloss_compl); + /* Don't defer this if we are in the process of deleting the vport + * or unloading the driver. The unload will cleanup the node + * appropriately we just need to cleanup the ndlp rport info here. + */ + if (vport->load_flag & FC_UNLOADING) { + put_node = rdata->pnode != NULL; + put_rport = ndlp->rport != NULL; + rdata->pnode = NULL; + ndlp->rport = NULL; + if (put_node) + lpfc_nlp_put(ndlp); + if (put_rport) + put_device(&rport->dev); + return; + } + + if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) + return; + evtp = &ndlp->dev_loss_evt; if (!list_empty(&evtp->evt_listp)) return; spin_lock_irq(&phba->hbalock); - evtp->evt_arg1 = ndlp; - evtp->evt_arg2 = &devloss_compl; + /* We need to hold the node by incrementing the reference + * count until this queued work is done + */ + evtp->evt_arg1 = lpfc_nlp_get(ndlp); evtp->evt = LPFC_EVT_DEV_LOSS; list_add_tail(&evtp->evt_listp, &phba->work_list); if (phba->work_wait) @@ -145,8 +160,6 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) spin_unlock_irq(&phba->hbalock); - wait_for_completion(&devloss_compl); - return; } @@ -154,7 +167,7 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) * This function is called from the worker thread when dev_loss_tmo * expire. */ -void +static void lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) { struct lpfc_rport_data *rdata; @@ -162,6 +175,8 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) struct lpfc_vport *vport; struct lpfc_hba *phba; uint8_t *name; + int put_node; + int put_rport; int warn_on = 0; rport = ndlp->rport; @@ -178,14 +193,32 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) "rport devlosstmo:did:x%x type:x%x id:x%x", ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id); - if (!(vport->load_flag & FC_UNLOADING) && - ndlp->nlp_state == NLP_STE_MAPPED_NODE) + /* Don't defer this if we are in the process of deleting the vport + * or unloading the driver. The unload will cleanup the node + * appropriately we just need to cleanup the ndlp rport info here. + */ + if (vport->load_flag & FC_UNLOADING) { + if (ndlp->nlp_sid != NLP_NO_SID) { + /* flush the target */ + lpfc_sli_abort_iocb(vport, + &phba->sli.ring[phba->sli.fcp_ring], + ndlp->nlp_sid, 0, LPFC_CTX_TGT); + } + put_node = rdata->pnode != NULL; + put_rport = ndlp->rport != NULL; + rdata->pnode = NULL; + ndlp->rport = NULL; + if (put_node) + lpfc_nlp_put(ndlp); + if (put_rport) + put_device(&rport->dev); return; + } - if (ndlp->nlp_type & NLP_FABRIC) { - int put_node; - int put_rport; + if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) + return; + if (ndlp->nlp_type & NLP_FABRIC) { /* We will clean up these Nodes in linkup */ put_node = rdata->pnode != NULL; put_rport = ndlp->rport != NULL; @@ -227,23 +260,20 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) ndlp->nlp_state, ndlp->nlp_rpi); } + put_node = rdata->pnode != NULL; + put_rport = ndlp->rport != NULL; + rdata->pnode = NULL; + ndlp->rport = NULL; + if (put_node) + lpfc_nlp_put(ndlp); + if (put_rport) + put_device(&rport->dev); + if (!(vport->load_flag & FC_UNLOADING) && !(ndlp->nlp_flag & NLP_DELAY_TMO) && !(ndlp->nlp_flag & NLP_NPR_2B_DISC) && - (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) + (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) { lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); - else { - int put_node; - int put_rport; - - put_node = rdata->pnode != NULL; - put_rport = ndlp->rport != NULL; - rdata->pnode = NULL; - ndlp->rport = NULL; - if (put_node) - lpfc_nlp_put(ndlp); - if (put_rport) - put_device(&rport->dev); } } @@ -260,7 +290,6 @@ lpfc_work_list_done(struct lpfc_hba *phba) { struct lpfc_work_evt *evtp = NULL; struct lpfc_nodelist *ndlp; - struct lpfc_vport *vport; int free_evt; spin_lock_irq(&phba->hbalock); @@ -270,35 +299,22 @@ lpfc_work_list_done(struct lpfc_hba *phba) spin_unlock_irq(&phba->hbalock); free_evt = 1; switch (evtp->evt) { - case LPFC_EVT_DEV_LOSS_DELAY: - free_evt = 0; /* evt is part of ndlp */ - ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); - vport = ndlp->vport; - if (!vport) - break; - - lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, - "rport devlossdly:did:x%x flg:x%x", - ndlp->nlp_DID, ndlp->nlp_flag, 0); - - if (!(vport->load_flag & FC_UNLOADING) && - !(ndlp->nlp_flag & NLP_DELAY_TMO) && - !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { - lpfc_disc_state_machine(vport, ndlp, NULL, - NLP_EVT_DEVICE_RM); - } - break; case LPFC_EVT_ELS_RETRY: ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); lpfc_els_retry_delay_handler(ndlp); free_evt = 0; /* evt is part of ndlp */ + /* decrement the node reference count held + * for this queued work + */ + lpfc_nlp_put(ndlp); break; case LPFC_EVT_DEV_LOSS: ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); - lpfc_nlp_get(ndlp); lpfc_dev_loss_tmo_handler(ndlp); free_evt = 0; - complete((struct completion *)(evtp->evt_arg2)); + /* decrement the node reference count held for + * this queued work + */ lpfc_nlp_put(ndlp); break; case LPFC_EVT_ONLINE: @@ -373,7 +389,7 @@ lpfc_work_done(struct lpfc_hba *phba) lpfc_handle_latt(phba); vports = lpfc_create_vport_work_array(phba); if (vports != NULL) - for(i = 0; i < LPFC_MAX_VPORTS; i++) { + for(i = 0; i <= phba->max_vpi; i++) { /* * We could have no vports in array if unloading, so if * this happens then just use the pport @@ -405,14 +421,14 @@ lpfc_work_done(struct lpfc_hba *phba) vport->work_port_events &= ~work_port_events; spin_unlock_irq(&vport->work_port_lock); } - lpfc_destroy_vport_work_array(vports); + lpfc_destroy_vport_work_array(phba, vports); pring = &phba->sli.ring[LPFC_ELS_RING]; status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); status >>= (4*LPFC_ELS_RING); if ((status & HA_RXMASK) || (pring->flag & LPFC_DEFERRED_RING_EVENT)) { - if (pring->flag & LPFC_STOP_IOCB_MASK) { + if (pring->flag & LPFC_STOP_IOCB_EVENT) { pring->flag |= LPFC_DEFERRED_RING_EVENT; } else { lpfc_sli_handle_slow_ring_event(phba, pring, @@ -544,6 +560,7 @@ lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, void lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) { + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ndlp, *next_ndlp; int rc; @@ -552,7 +569,9 @@ lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) continue; - if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) + if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || + ((vport->port_type == LPFC_NPIV_PORT) && + (ndlp->nlp_DID == NameServer_DID))) lpfc_unreg_rpi(vport, ndlp); /* Leave Fabric nodes alone on link down */ @@ -565,14 +584,30 @@ lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) } if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { lpfc_mbx_unreg_vpi(vport); + spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; + spin_unlock_irq(shost->host_lock); } } +void +lpfc_port_link_failure(struct lpfc_vport *vport) +{ + /* Cleanup any outstanding RSCN activity */ + lpfc_els_flush_rscn(vport); + + /* Cleanup any outstanding ELS commands */ + lpfc_els_flush_cmd(vport); + + lpfc_cleanup_rpis(vport, 0); + + /* Turn off discovery timer if its running */ + lpfc_can_disctmo(vport); +} + static void lpfc_linkdown_port(struct lpfc_vport *vport) { - struct lpfc_nodelist *ndlp, *next_ndlp; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); @@ -581,21 +616,8 @@ lpfc_linkdown_port(struct lpfc_vport *vport) "Link Down: state:x%x rtry:x%x flg:x%x", vport->port_state, vport->fc_ns_retry, vport->fc_flag); - /* Cleanup any outstanding RSCN activity */ - lpfc_els_flush_rscn(vport); - - /* Cleanup any outstanding ELS commands */ - lpfc_els_flush_cmd(vport); + lpfc_port_link_failure(vport); - lpfc_cleanup_rpis(vport, 0); - - /* free any ndlp's on unused list */ - list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) - if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) - lpfc_drop_node(vport, ndlp); - - /* Turn off discovery timer if its running */ - lpfc_can_disctmo(vport); } int @@ -618,18 +640,18 @@ lpfc_linkdown(struct lpfc_hba *phba) spin_unlock_irq(&phba->hbalock); vports = lpfc_create_vport_work_array(phba); if (vports != NULL) - for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) { + for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { /* Issue a LINK DOWN event to all nodes */ lpfc_linkdown_port(vports[i]); } - lpfc_destroy_vport_work_array(vports); + lpfc_destroy_vport_work_array(phba, vports); /* Clean up any firmware default rpi's */ mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (mb) { lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb); mb->vport = vport; mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; - if (lpfc_sli_issue_mbox(phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB)) + if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) == MBX_NOT_FINISHED) { mempool_free(mb, phba->mbox_mem_pool); } @@ -643,8 +665,7 @@ lpfc_linkdown(struct lpfc_hba *phba) lpfc_config_link(phba, mb); mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; mb->vport = vport; - if (lpfc_sli_issue_mbox(phba, mb, - (MBX_NOWAIT | MBX_STOP_IOCB)) + if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) == MBX_NOT_FINISHED) { mempool_free(mb, phba->mbox_mem_pool); } @@ -686,7 +707,6 @@ static void lpfc_linkup_port(struct lpfc_vport *vport) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); - struct lpfc_nodelist *ndlp, *next_ndlp; struct lpfc_hba *phba = vport->phba; if ((vport->load_flag & FC_UNLOADING) != 0) @@ -713,11 +733,6 @@ lpfc_linkup_port(struct lpfc_vport *vport) if (vport->fc_flag & FC_LBIT) lpfc_linkup_cleanup_nodes(vport); - /* free any ndlp's in unused state */ - list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, - nlp_listp) - if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) - lpfc_drop_node(vport, ndlp); } static int @@ -734,9 +749,9 @@ lpfc_linkup(struct lpfc_hba *phba) vports = lpfc_create_vport_work_array(phba); if (vports != NULL) - for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) + for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) lpfc_linkup_port(vports[i]); - lpfc_destroy_vport_work_array(vports); + lpfc_destroy_vport_work_array(phba, vports); if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) lpfc_issue_clear_la(phba, phba->pport); @@ -749,7 +764,7 @@ lpfc_linkup(struct lpfc_hba *phba) * as the completion routine when the command is * handed off to the SLI layer. */ -void +static void lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { struct lpfc_vport *vport = pmb->vport; @@ -852,8 +867,6 @@ lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) * LPFC_FLOGI while waiting for FLOGI cmpl */ if (vport->port_state != LPFC_FLOGI) { - vport->port_state = LPFC_FLOGI; - lpfc_set_disctmo(vport); lpfc_initial_flogi(vport); } return; @@ -1022,8 +1035,7 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) lpfc_read_sparam(phba, sparam_mbox, 0); sparam_mbox->vport = vport; sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; - rc = lpfc_sli_issue_mbox(phba, sparam_mbox, - (MBX_NOWAIT | MBX_STOP_IOCB)); + rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { mp = (struct lpfc_dmabuf *) sparam_mbox->context1; lpfc_mbuf_free(phba, mp->virt, mp->phys); @@ -1040,8 +1052,7 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) lpfc_config_link(phba, cfglink_mbox); cfglink_mbox->vport = vport; cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; - rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, - (MBX_NOWAIT | MBX_STOP_IOCB)); + rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); if (rc != MBX_NOT_FINISHED) return; mempool_free(cfglink_mbox, phba->mbox_mem_pool); @@ -1174,6 +1185,9 @@ lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); mempool_free(pmb, phba->mbox_mem_pool); + /* decrement the node reference count held for this callback + * function. + */ lpfc_nlp_put(ndlp); return; @@ -1219,7 +1233,7 @@ lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) lpfc_unreg_vpi(phba, vport->vpi, mbox); mbox->vport = vport; mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; - rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB)); + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, "1800 Could not issue unreg_vpi\n"); @@ -1319,7 +1333,7 @@ lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) vports = lpfc_create_vport_work_array(phba); if (vports != NULL) for(i = 0; - i < LPFC_MAX_VPORTS && vports[i] != NULL; + i <= phba->max_vpi && vports[i] != NULL; i++) { if (vports[i]->port_type == LPFC_PHYSICAL_PORT) continue; @@ -1335,7 +1349,7 @@ lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) "Fabric support\n"); } } - lpfc_destroy_vport_work_array(vports); + lpfc_destroy_vport_work_array(phba, vports); lpfc_do_scr_ns_plogi(phba, vport); } @@ -1361,11 +1375,16 @@ lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) if (mb->mbxStatus) { out: + /* decrement the node reference count held for this + * callback function. + */ lpfc_nlp_put(ndlp); lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); mempool_free(pmb, phba->mbox_mem_pool); - lpfc_drop_node(vport, ndlp); + + /* If no other thread is using the ndlp, free it */ + lpfc_nlp_not_used(ndlp); if (phba->fc_topology == TOPOLOGY_LOOP) { /* @@ -1410,6 +1429,9 @@ out: goto out; } + /* decrement the node reference count held for this + * callback function. + */ lpfc_nlp_put(ndlp); lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); @@ -1656,8 +1678,18 @@ lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) void lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) { + /* + * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should + * be used if we wish to issue the "last" lpfc_nlp_put() to remove + * the ndlp from the vport. The ndlp marked as UNUSED on the list + * until ALL other outstanding threads have completed. We check + * that the ndlp not already in the UNUSED state before we proceed. + */ + if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) + return; lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); lpfc_nlp_put(ndlp); + return; } /* @@ -1868,8 +1900,7 @@ lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox); mbox->vport = vport; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; - rc = lpfc_sli_issue_mbox(phba, mbox, - (MBX_NOWAIT | MBX_STOP_IOCB)); + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) mempool_free(mbox, phba->mbox_mem_pool); } @@ -1892,8 +1923,8 @@ lpfc_unreg_all_rpis(struct lpfc_vport *vport) lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox); mbox->vport = vport; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; - rc = lpfc_sli_issue_mbox(phba, mbox, - (MBX_NOWAIT | MBX_STOP_IOCB)); + mbox->context1 = NULL; + rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); if (rc == MBX_NOT_FINISHED) { mempool_free(mbox, phba->mbox_mem_pool); } @@ -1912,8 +1943,8 @@ lpfc_unreg_default_rpis(struct lpfc_vport *vport) lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox); mbox->vport = vport; mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; - rc = lpfc_sli_issue_mbox(phba, mbox, - (MBX_NOWAIT | MBX_STOP_IOCB)); + mbox->context1 = NULL; + rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); if (rc == MBX_NOT_FINISHED) { lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, "1815 Could not issue " @@ -1981,11 +2012,6 @@ lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) list_del_init(&ndlp->dev_loss_evt.evt_listp); - if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) { - list_del_init(&ndlp->dev_loss_evt.evt_listp); - complete((struct completion *)(ndlp->dev_loss_evt.evt_arg2)); - } - lpfc_unreg_rpi(vport, ndlp); return 0; @@ -1999,12 +2025,39 @@ lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) static void lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) { + struct lpfc_hba *phba = vport->phba; struct lpfc_rport_data *rdata; + LPFC_MBOXQ_t *mbox; + int rc; if (ndlp->nlp_flag & NLP_DELAY_TMO) { lpfc_cancel_retry_delay_tmo(vport, ndlp); } + if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) { + /* For this case we need to cleanup the default rpi + * allocated by the firmware. + */ + if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) + != NULL) { + rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID, + (uint8_t *) &vport->fc_sparam, mbox, 0); + if (rc) { + mempool_free(mbox, phba->mbox_mem_pool); + } + else { + mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; + mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; + mbox->vport = vport; + mbox->context2 = NULL; + rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + mempool_free(mbox, phba->mbox_mem_pool); + } + } + } + } + lpfc_cleanup_node(vport, ndlp); /* @@ -2132,6 +2185,12 @@ lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) } if (vport->fc_flag & FC_RSCN_MODE) { if (lpfc_rscn_payload_check(vport, did)) { + /* If we've already recieved a PLOGI from this NPort + * we don't need to try to discover it again. + */ + if (ndlp->nlp_flag & NLP_RCV_PLOGI) + return NULL; + spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(shost->host_lock); @@ -2144,8 +2203,13 @@ lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) } else ndlp = NULL; } else { + /* If we've already recieved a PLOGI from this NPort, + * or we are already in the process of discovery on it, + * we don't need to try to discover it again. + */ if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || - ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) + ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || + ndlp->nlp_flag & NLP_RCV_PLOGI) return NULL; lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); spin_lock_irq(shost->host_lock); @@ -2220,8 +2284,7 @@ lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) lpfc_clear_la(phba, mbox); mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; mbox->vport = vport; - rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT | - MBX_STOP_IOCB)); + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { mempool_free(mbox, phba->mbox_mem_pool); lpfc_disc_flush_list(vport); @@ -2244,8 +2307,7 @@ lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox); regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; regvpimbox->vport = vport; - if (lpfc_sli_issue_mbox(phba, regvpimbox, - (MBX_NOWAIT | MBX_STOP_IOCB)) + if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) == MBX_NOT_FINISHED) { mempool_free(regvpimbox, phba->mbox_mem_pool); } @@ -2414,7 +2476,7 @@ lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) } } -void +static void lpfc_disc_flush_list(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp, *next_ndlp; @@ -2426,7 +2488,6 @@ lpfc_disc_flush_list(struct lpfc_vport *vport) if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { lpfc_free_tx(phba, ndlp); - lpfc_nlp_put(ndlp); } } } @@ -2516,6 +2577,7 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport) if (ndlp->nlp_type & NLP_FABRIC) { /* Clean up the ndlp on Fabric connections */ lpfc_drop_node(vport, ndlp); + } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { /* Fail outstanding IO now since device * is marked for PLOGI. @@ -2524,9 +2586,8 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport) } } if (vport->port_state != LPFC_FLOGI) { - vport->port_state = LPFC_FLOGI; - lpfc_set_disctmo(vport); lpfc_initial_flogi(vport); + return; } break; @@ -2536,7 +2597,7 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport) /* Initial FLOGI timeout */ lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, "0222 Initial %s timeout\n", - vport->vpi ? "FLOGI" : "FDISC"); + vport->vpi ? "FDISC" : "FLOGI"); /* Assume no Fabric and go on with discovery. * Check for outstanding ELS FLOGI to abort. @@ -2558,10 +2619,10 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport) /* Next look for NameServer ndlp */ ndlp = lpfc_findnode_did(vport, NameServer_DID); if (ndlp) - lpfc_nlp_put(ndlp); - /* Start discovery */ - lpfc_disc_start(vport); - break; + lpfc_els_abort(phba, ndlp); + + /* ReStart discovery */ + goto restart_disc; case LPFC_NS_QRY: /* Check for wait for NameServer Rsp timeout */ @@ -2580,6 +2641,7 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport) } vport->fc_ns_retry = 0; +restart_disc: /* * Discovery is over. * set port_state to PORT_READY if SLI2. @@ -2608,8 +2670,7 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport) initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0; initlinkmbox->vport = vport; initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; - rc = lpfc_sli_issue_mbox(phba, initlinkmbox, - (MBX_NOWAIT | MBX_STOP_IOCB)); + rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); lpfc_set_loopback_flag(phba); if (rc == MBX_NOT_FINISHED) mempool_free(initlinkmbox, phba->mbox_mem_pool); @@ -2664,12 +2725,14 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport) clrlaerr = 1; break; + case LPFC_LINK_UP: + lpfc_issue_clear_la(phba, vport); + /* Drop thru */ case LPFC_LINK_UNKNOWN: case LPFC_WARM_START: case LPFC_INIT_START: case LPFC_INIT_MBX_CMDS: case LPFC_LINK_DOWN: - case LPFC_LINK_UP: case LPFC_HBA_ERROR: lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, "0230 Unexpected timeout, hba link " @@ -2723,7 +2786,9 @@ lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) else mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60); - /* Mailbox took a reference to the node */ + /* decrement the node reference count held for this callback + * function. + */ lpfc_nlp_put(ndlp); lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); @@ -2747,19 +2812,19 @@ lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) sizeof(ndlp->nlp_portname)) == 0; } -struct lpfc_nodelist * +static struct lpfc_nodelist * __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) { struct lpfc_nodelist *ndlp; list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { - if (ndlp->nlp_state != NLP_STE_UNUSED_NODE && - filter(ndlp, param)) + if (filter(ndlp, param)) return ndlp; } return NULL; } +#if 0 /* * Search node lists for a remote port matching filter criteria * Caller needs to hold host_lock before calling this routine. @@ -2775,6 +2840,7 @@ lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) spin_unlock_irq(shost->host_lock); return ndlp; } +#endif /* 0 */ /* * This routine looks up the ndlp lists for the given RPI. If rpi found it @@ -2786,6 +2852,7 @@ __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); } +#if 0 struct lpfc_nodelist * lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) { @@ -2797,6 +2864,7 @@ lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) spin_unlock_irq(shost->host_lock); return ndlp; } +#endif /* 0 */ /* * This routine looks up the ndlp lists for the given WWPN. If WWPN found it @@ -2837,6 +2905,9 @@ lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, return; } +/* This routine releases all resources associated with a specifc NPort's ndlp + * and mempool_free's the nodelist. + */ static void lpfc_nlp_release(struct kref *kref) { @@ -2851,16 +2922,57 @@ lpfc_nlp_release(struct kref *kref) mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool); } +/* This routine bumps the reference count for a ndlp structure to ensure + * that one discovery thread won't free a ndlp while another discovery thread + * is using it. + */ struct lpfc_nodelist * lpfc_nlp_get(struct lpfc_nodelist *ndlp) { - if (ndlp) + if (ndlp) { + lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, + "node get: did:x%x flg:x%x refcnt:x%x", + ndlp->nlp_DID, ndlp->nlp_flag, + atomic_read(&ndlp->kref.refcount)); kref_get(&ndlp->kref); + } return ndlp; } + +/* This routine decrements the reference count for a ndlp structure. If the + * count goes to 0, this indicates the the associated nodelist should be freed. + */ int lpfc_nlp_put(struct lpfc_nodelist *ndlp) { + if (ndlp) { + lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, + "node put: did:x%x flg:x%x refcnt:x%x", + ndlp->nlp_DID, ndlp->nlp_flag, + atomic_read(&ndlp->kref.refcount)); + } return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; } + +/* This routine free's the specified nodelist if it is not in use + * by any other discovery thread. This routine returns 1 if the ndlp + * is not being used by anyone and has been freed. A return value of + * 0 indicates it is being used by another discovery thread and the + * refcount is left unchanged. + */ +int +lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) +{ + lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, + "node not used: did:x%x flg:x%x refcnt:x%x", + ndlp->nlp_DID, ndlp->nlp_flag, + atomic_read(&ndlp->kref.refcount)); + + if (atomic_read(&ndlp->kref.refcount) == 1) { + lpfc_nlp_put(ndlp); + return 1; + } + return 0; +} + |