From 87af33fe5f78c27cf9e43c6e586dd6efd4be3e40 Mon Sep 17 00:00:00 2001 From: James Smart Date: Sat, 27 Oct 2007 13:37:43 -0400 Subject: [SCSI] lpfc 8.2.3 : FC Discovery Fixes FC Discovery Fixes: - Fix up lpfc_drop_node() vs lpfc_nlp_not_used() usage - Clear ADISC flag when unregistering RPI and REMOVE ndlps if in recovery. - Fix usage of UNUSED list and ndlps - Fix PLOGI race conditions - Reset link if NameServer PLOGI errors occur - Synchronize GID_FT queries with PLOGI receptions Signed-off-by: James Smart Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc_els.c | 231 +++++++++++++++++++++++-------------------- 1 file changed, 123 insertions(+), 108 deletions(-) (limited to 'drivers/scsi/lpfc/lpfc_els.c') diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index 813eeca7ce1e..0a5006ea9909 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -575,8 +575,13 @@ flogifail: /* Start discovery */ lpfc_disc_start(vport); + } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) || + ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) && + (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) && + (phba->link_state != LPFC_CLEAR_LA)) { + /* If FLOGI failed enable link interrupt. */ + lpfc_issue_clear_la(phba, vport); } - out: lpfc_els_free_iocb(phba, cmdiocb); } @@ -711,13 +716,8 @@ lpfc_initial_flogi(struct lpfc_vport *vport) lpfc_nlp_init(vport, ndlp, Fabric_DID); } else { lpfc_dequeue_node(vport, ndlp); - - /* If we go thru this path, Fabric_DID ndlp is in the process - * of being removed. We need to bump the reference count by 1 - * so it stays around all through this link up period. - */ - lpfc_nlp_get(ndlp); } + if (lpfc_issue_els_flogi(vport, ndlp, 0)) { lpfc_nlp_put(ndlp); } @@ -746,7 +746,8 @@ lpfc_initial_fdisc(struct lpfc_vport *vport) } return 1; } -static void + +void lpfc_more_plogi(struct lpfc_vport *vport) { int sentplogi; @@ -813,8 +814,12 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state); /* Move this back to NPR state */ - if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) + if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) { + /* The new_ndlp is replacing ndlp totally, so we need + * to put ndlp on UNUSED list and try to free it. + */ lpfc_drop_node(vport, ndlp); + } else { lpfc_unreg_rpi(vport, ndlp); ndlp->nlp_DID = 0; /* Two ndlps cannot have the same did */ @@ -823,6 +828,27 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, return new_ndlp; } +void +lpfc_end_rscn(struct lpfc_vport *vport) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + + if (vport->fc_flag & FC_RSCN_MODE) { + /* + * Check to see if more RSCNs came in while we were + * processing this one. + */ + if (vport->fc_rscn_id_cnt || + (vport->fc_flag & FC_RSCN_DISCOVERY) != 0) + lpfc_els_handle_rscn(vport); + else { + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_RSCN_MODE; + spin_unlock_irq(shost->host_lock); + } + } +} + static void lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) @@ -893,13 +919,6 @@ lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, goto out; } /* PLOGI failed */ - if (ndlp->nlp_DID == NameServer_DID) { - lpfc_vport_set_state(vport, FC_VPORT_FAILED); - lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, - "0250 Nameserver login error: " - "0x%x / 0x%x\n", - irsp->ulpStatus, irsp->un.ulpWord[4]); - } /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ if (lpfc_error_lost_link(irsp)) { rc = NLP_STE_FREED_NODE; @@ -927,20 +946,7 @@ lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, spin_unlock_irq(shost->host_lock); lpfc_can_disctmo(vport); - if (vport->fc_flag & FC_RSCN_MODE) { - /* - * Check to see if more RSCNs came in while - * we were processing this one. - */ - if ((vport->fc_rscn_id_cnt == 0) && - (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { - spin_lock_irq(shost->host_lock); - vport->fc_flag &= ~FC_RSCN_MODE; - spin_unlock_irq(shost->host_lock); - } else { - lpfc_els_handle_rscn(vport); - } - } + lpfc_end_rscn(vport); } } @@ -1160,8 +1166,6 @@ lpfc_more_adisc(struct lpfc_vport *vport) static void lpfc_rscn_disc(struct lpfc_vport *vport) { - struct Scsi_Host *shost = lpfc_shost_from_vport(vport); - lpfc_can_disctmo(vport); /* RSCN discovery */ @@ -1170,19 +1174,7 @@ lpfc_rscn_disc(struct lpfc_vport *vport) if (lpfc_els_disc_plogi(vport)) return; - if (vport->fc_flag & FC_RSCN_MODE) { - /* Check to see if more RSCNs came in while we were - * processing this one. - */ - if ((vport->fc_rscn_id_cnt == 0) && - (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { - spin_lock_irq(shost->host_lock); - vport->fc_flag &= ~FC_RSCN_MODE; - spin_unlock_irq(shost->host_lock); - } else { - lpfc_els_handle_rscn(vport); - } - } + lpfc_end_rscn(vport); } static void @@ -1632,27 +1624,6 @@ lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry) return 0; } -static void -lpfc_end_rscn(struct lpfc_vport *vport) -{ - struct Scsi_Host *shost = lpfc_shost_from_vport(vport); - - if (vport->fc_flag & FC_RSCN_MODE) { - /* - * Check to see if more RSCNs came in while we were - * processing this one. - */ - if (vport->fc_rscn_id_cnt || - (vport->fc_flag & FC_RSCN_DISCOVERY) != 0) - lpfc_els_handle_rscn(vport); - else { - spin_lock_irq(shost->host_lock); - vport->fc_flag &= ~FC_RSCN_MODE; - spin_unlock_irq(shost->host_lock); - } - } -} - void lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp) { @@ -2068,6 +2039,32 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, return 0; } +int +lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1) +{ + struct lpfc_dmabuf *buf_ptr; + + /* Free the response before processing the command. */ + if (!list_empty(&buf_ptr1->list)) { + list_remove_head(&buf_ptr1->list, buf_ptr, + struct lpfc_dmabuf, + list); + lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); + kfree(buf_ptr); + } + lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys); + kfree(buf_ptr1); + return 0; +} + +int +lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr) +{ + lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); + kfree(buf_ptr); + return 0; +} + int lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb) { @@ -2080,22 +2077,12 @@ lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb) /* context2 = cmd, context2->next = rsp, context3 = bpl */ if (elsiocb->context2) { buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2; - /* Free the response before processing the command. */ - if (!list_empty(&buf_ptr1->list)) { - list_remove_head(&buf_ptr1->list, buf_ptr, - struct lpfc_dmabuf, - list); - lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); - kfree(buf_ptr); - } - lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys); - kfree(buf_ptr1); + lpfc_els_free_data(phba, buf_ptr1); } if (elsiocb->context3) { buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3; - lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); - kfree(buf_ptr); + lpfc_els_free_bpl(phba, buf_ptr); } lpfc_sli_release_iocbq(phba, elsiocb); return 0; @@ -2119,15 +2106,15 @@ lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, "Data: x%x x%x x%x\n", ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); - switch (ndlp->nlp_state) { - case NLP_STE_UNUSED_NODE: /* node is just allocated */ - lpfc_drop_node(vport, ndlp); - break; - case NLP_STE_NPR_NODE: /* NPort Recovery mode */ - lpfc_unreg_rpi(vport, ndlp); - break; - default: - break; + + if (ndlp->nlp_state == NLP_STE_NPR_NODE) { + /* NPort Recovery mode or node is just allocated */ + if (!lpfc_nlp_not_used(ndlp)) { + /* If the ndlp is being used by another discovery + * thread, just unregister the RPI. + */ + lpfc_unreg_rpi(vport, ndlp); + } } lpfc_els_free_iocb(phba, cmdiocb); return; @@ -2160,15 +2147,27 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL; struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL; - IOCB_t *irsp; + IOCB_t *irsp; + uint8_t *pcmd; LPFC_MBOXQ_t *mbox = NULL; struct lpfc_dmabuf *mp = NULL; + uint32_t ls_rjt = 0; irsp = &rspiocb->iocb; if (cmdiocb->context_un.mbox) mbox = cmdiocb->context_un.mbox; + /* First determine if this is a LS_RJT cmpl */ + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt); + if (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT) { + /* A LS_RJT associated with Default RPI cleanup + * has its own seperate code path. + */ + if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI)) + ls_rjt = 1; + } + /* Check to see if link went down during discovery */ if (!ndlp || lpfc_els_chk_latt(vport)) { if (mbox) { @@ -2247,7 +2246,16 @@ out: spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI); spin_unlock_irq(shost->host_lock); + + /* If the node is not being used by another discovery thread, + * and we are sending a reject, we are done with it. + * Release driver reference count here and free associated + * resources. + */ + if (ls_rjt) + lpfc_nlp_not_used(ndlp); } + lpfc_els_free_iocb(phba, cmdiocb); return; } @@ -2418,18 +2426,6 @@ lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError, elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0); - /* If the node is in the UNUSED state, and we are sending - * a reject, we are done with it. Release driver reference - * count here. The outstanding els will release its reference on - * completion, as long as the ndlp stays in the UNUSED list, - * and the node can be freed then. - */ - if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) && - !(ndlp->nlp_flag & NLP_DELAYED_RM)) { - ndlp->nlp_flag |= NLP_DELAYED_RM; - lpfc_nlp_put(ndlp); - } - if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); return 1; @@ -2715,7 +2711,10 @@ lpfc_els_disc_plogi(struct lpfc_vport *vport) } } } - if (sentplogi == 0) { + if (sentplogi) { + lpfc_set_disctmo(vport); + } + else { spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_NLP_MORE; spin_unlock_irq(shost->host_lock); @@ -3533,6 +3532,7 @@ lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, * other NLP_FABRIC logins */ lpfc_drop_node(vport, ndlp); + } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { /* Fail outstanding I/O now since this * device is marked for PLOGI @@ -3781,6 +3781,7 @@ static void lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb) { + struct Scsi_Host *shost; struct lpfc_nodelist *ndlp; struct ls_rjt stat; uint32_t *payload; @@ -3826,6 +3827,14 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, ndlp->nlp_type |= NLP_FABRIC; } } + else { + if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) { + /* This is simular to the new node path */ + lpfc_nlp_get(ndlp); + lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); + newnode = 1; + } + } phba->fc_stat.elsRcvFrame++; if (elsiocb->context1) @@ -3853,6 +3862,12 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, rjt_err = LSRJT_UNABLE_TPC; break; } + + shost = lpfc_shost_from_vport(vport); + spin_lock_irq(shost->host_lock); + ndlp->nlp_flag &= ~NLP_TARGET_REMOVE; + spin_unlock_irq(shost->host_lock); + lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PLOGI); @@ -3864,7 +3879,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, phba->fc_stat.elsRcvFLOGI++; lpfc_els_rcv_flogi(vport, elsiocb, ndlp); - if (newnode && (!(ndlp->nlp_flag & NLP_DELAYED_RM))) + if (newnode) lpfc_nlp_put(ndlp); break; case ELS_CMD_LOGO: @@ -3894,7 +3909,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, case ELS_CMD_RSCN: phba->fc_stat.elsRcvRSCN++; lpfc_els_rcv_rscn(vport, elsiocb, ndlp); - if (newnode && (!(ndlp->nlp_flag & NLP_DELAYED_RM))) + if (newnode) lpfc_nlp_put(ndlp); break; case ELS_CMD_ADISC: @@ -3966,7 +3981,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, phba->fc_stat.elsRcvLIRR++; lpfc_els_rcv_lirr(vport, elsiocb, ndlp); - if (newnode && (!(ndlp->nlp_flag & NLP_DELAYED_RM))) + if (newnode) lpfc_nlp_put(ndlp); break; case ELS_CMD_RPS: @@ -3976,7 +3991,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, phba->fc_stat.elsRcvRPS++; lpfc_els_rcv_rps(vport, elsiocb, ndlp); - if (newnode && (!(ndlp->nlp_flag & NLP_DELAYED_RM))) + if (newnode) lpfc_nlp_put(ndlp); break; case ELS_CMD_RPL: @@ -3986,7 +4001,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, phba->fc_stat.elsRcvRPL++; lpfc_els_rcv_rpl(vport, elsiocb, ndlp); - if (newnode && (!(ndlp->nlp_flag & NLP_DELAYED_RM))) + if (newnode) lpfc_nlp_put(ndlp); break; case ELS_CMD_RNID: @@ -3996,7 +4011,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, phba->fc_stat.elsRcvRNID++; lpfc_els_rcv_rnid(vport, elsiocb, ndlp); - if (newnode && (!(ndlp->nlp_flag & NLP_DELAYED_RM))) + if (newnode) lpfc_nlp_put(ndlp); break; default: @@ -4011,7 +4026,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0115 Unknown ELS command x%x " "received from NPORT x%x\n", cmd, did); - if (newnode && (!(ndlp->nlp_flag & NLP_DELAYED_RM))) + if (newnode) lpfc_nlp_put(ndlp); break; } -- cgit v1.2.2