From 32b9793fe6ff09a85f36b8bd7d6ff214653a7497 Mon Sep 17 00:00:00 2001 From: James Smart Date: Sun, 19 Jul 2009 10:01:21 -0400 Subject: [SCSI] lpfc 8.3.4: Fix a pair of FCoE issues Fix a pair of FCoE issues - Fix Region 23 FCoE Parameters not being read correctly - Fix race condition when there are FCoE events during FCF table read Signed-off-by: James Smart Signed-off-by: James Bottomley Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc_hbadisc.c | 77 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 76 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/lpfc/lpfc_hbadisc.c') diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 625b2ef3050..cc4b6ba9e4d 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -61,6 +61,7 @@ static uint8_t lpfcAlpaArray[] = { static void lpfc_disc_timeout_handler(struct lpfc_vport *); static void lpfc_disc_flush_list(struct lpfc_vport *vport); +static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); void lpfc_terminate_rport_io(struct fc_rport *rport) @@ -1009,9 +1010,15 @@ lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) spin_lock_irqsave(&phba->hbalock, flags); phba->fcf.fcf_flag |= FCF_REGISTERED; spin_unlock_irqrestore(&phba->hbalock, flags); + /* If there is a pending FCoE event, restart FCF table scan. */ + if (lpfc_check_pending_fcoe_event(phba, 1)) { + mempool_free(mboxq, phba->mbox_mem_pool); + return; + } if (vport->port_state != LPFC_FLOGI) { spin_lock_irqsave(&phba->hbalock, flags); phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE); + phba->hba_flag &= ~FCF_DISC_INPROGRESS; spin_unlock_irqrestore(&phba->hbalock, flags); lpfc_initial_flogi(vport); } @@ -1199,6 +1206,7 @@ lpfc_register_fcf(struct lpfc_hba *phba) /* The FCF is already registered, start discovery */ if (phba->fcf.fcf_flag & FCF_REGISTERED) { phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE); + phba->hba_flag &= ~FCF_DISC_INPROGRESS; spin_unlock_irqrestore(&phba->hbalock, flags); if (phba->pport->port_state != LPFC_FLOGI) lpfc_initial_flogi(phba->pport); @@ -1387,6 +1395,60 @@ lpfc_match_fcf_conn_list(struct lpfc_hba *phba, return 0; } +/** + * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. + * @phba: pointer to lpfc hba data structure. + * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. + * + * This function check if there is any fcoe event pending while driver + * scan FCF entries. If there is any pending event, it will restart the + * FCF saning and return 1 else return 0. + */ +int +lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) +{ + LPFC_MBOXQ_t *mbox; + int rc; + /* + * If the Link is up and no FCoE events while in the + * FCF discovery, no need to restart FCF discovery. + */ + if ((phba->link_state >= LPFC_LINK_UP) && + (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) + return 0; + + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_AVAILABLE; + spin_unlock_irq(&phba->hbalock); + + if (phba->link_state >= LPFC_LINK_UP) + lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST); + + if (unreg_fcf) { + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_REGISTERED; + spin_unlock_irq(&phba->hbalock); + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) { + lpfc_printf_log(phba, KERN_ERR, + LOG_DISCOVERY|LOG_MBOX, + "2610 UNREG_FCFI mbox allocation failed\n"); + return 1; + } + lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); + mbox->vport = phba->pport; + mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, + "2611 UNREG_FCFI issue mbox failed\n"); + mempool_free(mbox, phba->mbox_mem_pool); + } + } + + return 1; +} + /** * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox. * @phba: pointer to lpfc hba data structure. @@ -1419,6 +1481,12 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) unsigned long flags; uint16_t vlan_id; + /* If there is pending FCoE event restart FCF table scan */ + if (lpfc_check_pending_fcoe_event(phba, 0)) { + lpfc_sli4_mbox_cmd_free(phba, mboxq); + return; + } + /* Get the first SGE entry from the non-embedded DMA memory. This * routine only uses a single SGE. */ @@ -1823,6 +1891,7 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) goto out; } } else { + vport->port_state = LPFC_VPORT_UNKNOWN; /* * Add the driver's default FCF record at FCF index 0 now. This * is phase 1 implementation that support FCF index 0 and driver @@ -1858,6 +1927,12 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) * The driver is expected to do FIP/FCF. Call the port * and get the FCF Table. */ + spin_lock_irq(&phba->hbalock); + if (phba->hba_flag & FCF_DISC_INPROGRESS) { + spin_unlock_irq(&phba->hbalock); + return; + } + spin_unlock_irq(&phba->hbalock); rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST); if (rc) @@ -4414,7 +4489,7 @@ lpfc_read_fcoe_param(struct lpfc_hba *phba, fcoe_param_hdr = (struct lpfc_fip_param_hdr *) buff; fcoe_param = (struct lpfc_fcoe_params *) - buff + sizeof(struct lpfc_fip_param_hdr); + (buff + sizeof(struct lpfc_fip_param_hdr)); if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) -- cgit v1.2.3