From 0ff10d46cf0a373c9c855a23cc9383ba4030d8d2 Mon Sep 17 00:00:00 2001 From: James Smart Date: Fri, 11 Jan 2008 01:52:36 -0500 Subject: [PATCH] [SCSI] lpfc 8.2.4 : Miscellaneous Discovery/ELS Fixes Miscellaneous Discovery/ELS Fixes: - Delay free's of ELS requests if adapter reject conditions - Fix concurrent PLOGI vs ADISC state handling - Add retry mechanism for GFF_ID - Correct some illegal state transitions around RSCN timeouts - Fix missing return in FAN handling Signed-off-by: James Smart Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc.h | 5 ++ drivers/scsi/lpfc/lpfc_crtn.h | 1 + drivers/scsi/lpfc/lpfc_ct.c | 83 ++++++++++++++++++++++++++---- drivers/scsi/lpfc/lpfc_els.c | 56 ++++++++++++++++++-- drivers/scsi/lpfc/lpfc_hbadisc.c | 1 + drivers/scsi/lpfc/lpfc_init.c | 23 +++++++++ drivers/scsi/lpfc/lpfc_nportdisc.c | 43 ++++++++++++++-- drivers/scsi/lpfc/lpfc_sli.c | 26 ++++++++++ drivers/scsi/lpfc/lpfc_sli.h | 1 + 9 files changed, 224 insertions(+), 15 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index 1ddfd688fe..b06635ac33 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -583,6 +583,11 @@ struct lpfc_hba { atomic_t slow_ring_trc_cnt; #endif + /* Used for deferred freeing of ELS data buffers */ + struct list_head elsbuf; + int elsbuf_cnt; + int elsbuf_prev_cnt; + uint8_t temp_sensor_support; /* Fields used for heart beat. */ unsigned long last_completion_time; diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h index d09eb533a2..50fcb7c930 100644 --- a/drivers/scsi/lpfc/lpfc_crtn.h +++ b/drivers/scsi/lpfc/lpfc_crtn.h @@ -89,6 +89,7 @@ int lpfc_check_sparm(struct lpfc_vport *, struct lpfc_nodelist *, struct serv_parm *, uint32_t); int lpfc_els_abort(struct lpfc_hba *, struct lpfc_nodelist *); void lpfc_more_plogi(struct lpfc_vport *); +void lpfc_more_adisc(struct lpfc_vport *); void lpfc_end_rscn(struct lpfc_vport *); int lpfc_els_chk_latt(struct lpfc_vport *); int lpfc_els_abort_flogi(struct lpfc_hba *); diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c index e8bd7c122f..c735ed4ad0 100644 --- a/drivers/scsi/lpfc/lpfc_ct.c +++ b/drivers/scsi/lpfc/lpfc_ct.c @@ -426,6 +426,7 @@ lpfc_ns_rsp(struct lpfc_vport *vport, struct lpfc_dmabuf *mp, uint32_t Size) lpfc_set_disctmo(vport); vport->num_disc_nodes = 0; + vport->fc_ns_retry = 0; list_add_tail(&head, &mp->list); @@ -506,7 +507,17 @@ lpfc_ns_rsp(struct lpfc_vport *vport, struct lpfc_dmabuf *mp, uint32_t Size) Did, vport->fc_flag, vport->fc_rscn_id_cnt); - if (lpfc_ns_cmd(vport, + /* This NPortID was previously + * a FCP target, * Don't even + * bother to send GFF_ID. + */ + ndlp = lpfc_findnode_did(vport, + Did); + if (ndlp && (ndlp->nlp_type & + NLP_FCP_TARGET)) + lpfc_setup_disc_node + (vport, Did); + else if (lpfc_ns_cmd(vport, SLI_CTNS_GFF_ID, 0, Did) == 0) vport->num_disc_nodes++; @@ -554,7 +565,7 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_dmabuf *outp; struct lpfc_sli_ct_request *CTrsp; struct lpfc_nodelist *ndlp; - int rc; + int rc, retry; /* First save ndlp, before we overwrite it */ ndlp = cmdiocb->context_un.ndlp; @@ -585,14 +596,35 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, if (irsp->ulpStatus) { /* Check for retry */ if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { - if ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) || - (irsp->un.ulpWord[4] != IOERR_NO_RESOURCES)) + retry = 1; + if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) { + switch (irsp->un.ulpWord[4]) { + case IOERR_NO_RESOURCES: + /* We don't increment the retry + * count for this case. + */ + break; + case IOERR_LINK_DOWN: + case IOERR_SLI_ABORTED: + case IOERR_SLI_DOWN: + retry = 0; + break; + default: + vport->fc_ns_retry++; + } + } + else vport->fc_ns_retry++; - /* CT command is being retried */ - rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, + + if (retry) { + /* CT command is being retried */ + rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, vport->fc_ns_retry, 0); - if (rc == 0) - goto out; + if (rc == 0) { + /* success */ + goto out; + } + } } lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, @@ -698,7 +730,7 @@ lpfc_cmpl_ct_cmd_gff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_dmabuf *inp = (struct lpfc_dmabuf *) cmdiocb->context1; struct lpfc_dmabuf *outp = (struct lpfc_dmabuf *) cmdiocb->context2; struct lpfc_sli_ct_request *CTrsp; - int did; + int did, rc, retry; uint8_t fbits; struct lpfc_nodelist *ndlp; @@ -729,6 +761,39 @@ lpfc_cmpl_ct_cmd_gff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, } } else { + /* Check for retry */ + if (cmdiocb->retry < LPFC_MAX_NS_RETRY) { + retry = 1; + if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) { + switch (irsp->un.ulpWord[4]) { + case IOERR_NO_RESOURCES: + /* We don't increment the retry + * count for this case. + */ + break; + case IOERR_LINK_DOWN: + case IOERR_SLI_ABORTED: + case IOERR_SLI_DOWN: + retry = 0; + break; + default: + cmdiocb->retry++; + } + } + else + cmdiocb->retry++; + + if (retry) { + /* CT command is being retried */ + rc = lpfc_ns_cmd(vport, SLI_CTNS_GFF_ID, + cmdiocb->retry, did); + if (rc == 0) { + /* success */ + lpfc_ct_free_iocb(phba, cmdiocb); + return; + } + } + } lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, "0267 NameServer GFF Rsp " "x%x Error (%d %d) Data: x%x x%x\n", diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index bf332cba2f..f5e0024359 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -783,6 +783,8 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, { struct lpfc_vport *vport = ndlp->vport; struct lpfc_nodelist *new_ndlp; + struct lpfc_rport_data *rdata; + struct fc_rport *rport; struct serv_parm *sp; uint8_t name[sizeof(struct lpfc_name)]; uint32_t rc; @@ -819,6 +821,11 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, lpfc_unreg_rpi(vport, new_ndlp); new_ndlp->nlp_DID = ndlp->nlp_DID; new_ndlp->nlp_prev_state = ndlp->nlp_prev_state; + + if (ndlp->nlp_flag & NLP_NPR_2B_DISC) + new_ndlp->nlp_flag |= NLP_NPR_2B_DISC; + ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; + lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state); /* Move this back to NPR state */ @@ -826,6 +833,20 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, /* The new_ndlp is replacing ndlp totally, so we need * to put ndlp on UNUSED list and try to free it. */ + + /* Fix up the rport accordingly */ + rport = ndlp->rport; + if (rport) { + rdata = rport->dd_data; + if (rdata->pnode == ndlp) { + lpfc_nlp_put(ndlp); + ndlp->rport = NULL; + rdata->pnode = lpfc_nlp_get(new_ndlp); + new_ndlp->rport = rport; + } + new_ndlp->nlp_type = ndlp->nlp_type; + } + lpfc_drop_node(vport, ndlp); } else { @@ -1149,7 +1170,7 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, return 0; } -static void +void lpfc_more_adisc(struct lpfc_vport *vport) { int sentadisc; @@ -2100,8 +2121,35 @@ 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; - lpfc_els_free_data(phba, buf_ptr1); + if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) { + /* Firmware could still be in progress of DMAing + * payload, so don't free data buffer till after + * a hbeat. + */ + elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE; + buf_ptr = elsiocb->context2; + elsiocb->context2 = NULL; + if (buf_ptr) { + buf_ptr1 = NULL; + spin_lock_irq(&phba->hbalock); + if (!list_empty(&buf_ptr->list)) { + list_remove_head(&buf_ptr->list, + buf_ptr1, struct lpfc_dmabuf, + list); + INIT_LIST_HEAD(&buf_ptr1->list); + list_add_tail(&buf_ptr1->list, + &phba->elsbuf); + phba->elsbuf_cnt++; + } + INIT_LIST_HEAD(&buf_ptr->list); + list_add_tail(&buf_ptr->list, &phba->elsbuf); + phba->elsbuf_cnt++; + spin_unlock_irq(&phba->hbalock); + } + } else { + buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2; + lpfc_els_free_data(phba, buf_ptr1); + } } if (elsiocb->context3) { @@ -3027,6 +3075,8 @@ lpfc_els_handle_rscn(struct lpfc_vport *vport) /* To process RSCN, first compare RSCN data with NameServer */ vport->fc_ns_retry = 0; + vport->num_disc_nodes = 0; + ndlp = lpfc_findnode_did(vport, NameServer_DID); if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { /* Good ndlp, issue CT Request to NameServer */ diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 74c3b7039c..f2b8bc49fe 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -2564,6 +2564,7 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport) } if (vport->port_state != LPFC_FLOGI) { lpfc_initial_flogi(vport); + return; } break; diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 0143baf4ba..f32cd9acd3 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -547,8 +547,10 @@ void lpfc_hb_timeout_handler(struct lpfc_hba *phba) { LPFC_MBOXQ_t *pmboxq; + struct lpfc_dmabuf *buf_ptr; int retval; struct lpfc_sli *psli = &phba->sli; + LIST_HEAD(completions); if ((phba->link_state == LPFC_HBA_ERROR) || (phba->pport->load_flag & FC_UNLOADING) || @@ -575,6 +577,24 @@ lpfc_hb_timeout_handler(struct lpfc_hba *phba) } spin_unlock_irq(&phba->pport->work_port_lock); + if (phba->elsbuf_cnt && + (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) { + spin_lock_irq(&phba->hbalock); + list_splice_init(&phba->elsbuf, &completions); + phba->elsbuf_cnt = 0; + phba->elsbuf_prev_cnt = 0; + spin_unlock_irq(&phba->hbalock); + + while (!list_empty(&completions)) { + list_remove_head(&completions, buf_ptr, + struct lpfc_dmabuf, list); + lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); + kfree(buf_ptr); + } + } + phba->elsbuf_prev_cnt = phba->elsbuf_cnt; + + /* If there is no heart beat outstanding, issue a heartbeat command */ if (!phba->hb_outstanding) { pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL); @@ -1999,6 +2019,9 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid) /* Initialize list of fabric iocbs */ INIT_LIST_HEAD(&phba->fabric_iocb_list); + /* Initialize list to save ELS buffers */ + INIT_LIST_HEAD(&phba->elsbuf); + vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev); if (!vport) goto out_kthread_stop; diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c index c654c787c3..783659aa21 100644 --- a/drivers/scsi/lpfc/lpfc_nportdisc.c +++ b/drivers/scsi/lpfc/lpfc_nportdisc.c @@ -442,7 +442,27 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; spin_unlock_irq(shost->host_lock); - if (vport->num_disc_nodes) { + + if ((ndlp->nlp_flag & NLP_ADISC_SND) && + (vport->num_disc_nodes)) { + /* Check to see if there are more + * ADISCs to be sent + */ + lpfc_more_adisc(vport); + + if ((vport->num_disc_nodes == 0) && + (vport->fc_npr_cnt)) + lpfc_els_disc_plogi(vport); + + if (vport->num_disc_nodes == 0) { + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_NDISC_ACTIVE; + spin_unlock_irq(shost->host_lock); + lpfc_can_disctmo(vport); + lpfc_end_rscn(vport); + } + } + else if (vport->num_disc_nodes) { /* Check to see if there are more * PLOGIs to be sent */ @@ -813,6 +833,7 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport, uint32_t evt) { struct lpfc_hba *phba = vport->phba; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_iocbq *cmdiocb, *rspiocb; struct lpfc_dmabuf *pcmd, *prsp, *mp; uint32_t *lp; @@ -930,10 +951,26 @@ out: "0261 Cannot Register NameServer login\n"); } + spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_DEFER_RM; + spin_unlock_irq(shost->host_lock); return NLP_STE_FREED_NODE; } +static uint32_t +lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, + void *arg, uint32_t evt) +{ + return ndlp->nlp_state; +} + +static uint32_t +lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport, + struct lpfc_nodelist *ndlp, void *arg, uint32_t evt) +{ + return ndlp->nlp_state; +} + static uint32_t lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, void *arg, uint32_t evt) @@ -2006,9 +2043,9 @@ static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT]) lpfc_rcv_els_plogi_issue, /* RCV_PRLO */ lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */ lpfc_disc_illegal, /* CMPL_PRLI */ - lpfc_disc_illegal, /* CMPL_LOGO */ + lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */ lpfc_disc_illegal, /* CMPL_ADISC */ - lpfc_disc_illegal, /* CMPL_REG_LOGIN */ + lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */ lpfc_device_rm_plogi_issue, /* DEVICE_RM */ lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */ diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index dcc4898804..be6519793f 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -1147,6 +1147,12 @@ lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, IOSTAT_LOCAL_REJECT; saveq->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED; + + /* Firmware could still be in progress + * of DMAing payload, so don't free data + * buffer till after a hbeat. + */ + saveq->iocb_flag |= LPFC_DELAY_MEM_FREE; } } (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq); @@ -3281,6 +3287,7 @@ lpfc_sli_hba_down(struct lpfc_hba *phba) LIST_HEAD(completions); struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; + struct lpfc_dmabuf *buf_ptr; LPFC_MBOXQ_t *pmb; struct lpfc_iocbq *iocb; IOCB_t *cmd = NULL; @@ -3320,6 +3327,19 @@ lpfc_sli_hba_down(struct lpfc_hba *phba) } } + spin_lock_irqsave(&phba->hbalock, flags); + list_splice_init(&phba->elsbuf, &completions); + phba->elsbuf_cnt = 0; + phba->elsbuf_prev_cnt = 0; + spin_unlock_irqrestore(&phba->hbalock, flags); + + while (!list_empty(&completions)) { + list_remove_head(&completions, buf_ptr, + struct lpfc_dmabuf, list); + lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); + kfree(buf_ptr); + } + /* Return any active mbox cmds */ del_timer_sync(&psli->mbox_tmo); spin_lock_irqsave(&phba->hbalock, flags); @@ -3490,6 +3510,12 @@ lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, pring->txcmplq_cnt--; spin_unlock_irq(&phba->hbalock); + /* Firmware could still be in progress of DMAing + * payload, so don't free data buffer till after + * a hbeat. + */ + abort_iocb->iocb_flag |= LPFC_DELAY_MEM_FREE; + abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED; abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT; abort_iocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED; diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h index 5fcfe88e2a..1796473ad6 100644 --- a/drivers/scsi/lpfc/lpfc_sli.h +++ b/drivers/scsi/lpfc/lpfc_sli.h @@ -44,6 +44,7 @@ struct lpfc_iocbq { #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ +#define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ uint8_t abort_count; uint8_t rsvd2; -- 2.39.5