From dbb6b3ab10464aa11df74c0d0a14e869a8c6fd1b Mon Sep 17 00:00:00 2001 From: James Smart Date: Tue, 8 Jun 2010 18:31:37 -0400 Subject: [PATCH] [SCSI] lpfc 8.3.14: FCoE Discovery Fixes - Prevent unregistring of unused FCF when FLOGI is pending. - Prevent point to point discovery on a FCoE HBA. - Fixed FCF discovery failure after swapping FCoE port by switching over to fast failover method when no FCF matches in-use FCF. Signed-off-by: Alex Iannicelli Signed-off-by: James Smart Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc_els.c | 38 +++++++- drivers/scsi/lpfc/lpfc_hbadisc.c | 151 +++++++++++++++++++++++++++---- drivers/scsi/lpfc/lpfc_sli.c | 3 +- drivers/scsi/lpfc/lpfc_sli4.h | 3 + 4 files changed, 175 insertions(+), 20 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index f936f8c7efe1..017c933d60ab 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -796,7 +796,9 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, * due to new FCF discovery */ if ((phba->hba_flag & HBA_FIP_SUPPORT) && - (phba->fcf.fcf_flag & FCF_DISCOVERY)) { + (phba->fcf.fcf_flag & FCF_DISCOVERY) && + (irsp->ulpStatus != IOSTAT_LOCAL_REJECT) && + (irsp->un.ulpWord[4] != IOERR_SLI_ABORTED)) { lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, "2611 FLOGI failed on registered " "FCF record fcf_index:%d, trying " @@ -890,9 +892,39 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, */ if (sp->cmn.fPort) rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp); - else + else if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp); - + else { + lpfc_printf_vlog(vport, KERN_ERR, + LOG_FIP | LOG_ELS, + "2831 FLOGI response with cleared Fabric " + "bit fcf_index 0x%x " + "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x " + "Fabric Name " + "%02x%02x%02x%02x%02x%02x%02x%02x\n", + phba->fcf.current_rec.fcf_indx, + phba->fcf.current_rec.switch_name[0], + phba->fcf.current_rec.switch_name[1], + phba->fcf.current_rec.switch_name[2], + phba->fcf.current_rec.switch_name[3], + phba->fcf.current_rec.switch_name[4], + phba->fcf.current_rec.switch_name[5], + phba->fcf.current_rec.switch_name[6], + phba->fcf.current_rec.switch_name[7], + phba->fcf.current_rec.fabric_name[0], + phba->fcf.current_rec.fabric_name[1], + phba->fcf.current_rec.fabric_name[2], + phba->fcf.current_rec.fabric_name[3], + phba->fcf.current_rec.fabric_name[4], + phba->fcf.current_rec.fabric_name[5], + phba->fcf.current_rec.fabric_name[6], + phba->fcf.current_rec.fabric_name[7]); + lpfc_nlp_put(ndlp); + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_DISCOVERY; + spin_unlock_irq(&phba->hbalock); + goto out; + } if (!rc) { /* Mark the FCF discovery process done */ if (phba->hba_flag & HBA_FIP_SUPPORT) diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index d1c5c52b1c25..7cd5c47a66ea 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -1300,7 +1300,7 @@ lpfc_register_fcf(struct lpfc_hba *phba) * used for this FCF when the function returns. * If the FCF record need to be used with a particular vlan id, the vlan is * set in the vlan_id on return of the function. If not VLAN tagging need to - * be used with the FCF vlan_id will be set to 0xFFFF; + * be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID; **/ static int lpfc_match_fcf_conn_list(struct lpfc_hba *phba, @@ -1336,7 +1336,7 @@ lpfc_match_fcf_conn_list(struct lpfc_hba *phba, if (phba->valid_vlan) *vlan_id = phba->vlan_id; else - *vlan_id = 0xFFFF; + *vlan_id = LPFC_FCOE_NULL_VID; return 1; } @@ -1360,7 +1360,7 @@ lpfc_match_fcf_conn_list(struct lpfc_hba *phba, if (fcf_vlan_id) *vlan_id = fcf_vlan_id; else - *vlan_id = 0xFFFF; + *vlan_id = LPFC_FCOE_NULL_VID; return 1; } @@ -1469,7 +1469,7 @@ lpfc_match_fcf_conn_list(struct lpfc_hba *phba, else if (fcf_vlan_id) *vlan_id = fcf_vlan_id; else - *vlan_id = 0xFFFF; + *vlan_id = LPFC_FCOE_NULL_VID; return 1; } @@ -1521,6 +1521,9 @@ lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS * flag */ + lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, + "2833 Stop FCF discovery process due to link " + "state change (x%x)\n", phba->link_state); spin_lock_irq(&phba->hbalock); phba->hba_flag &= ~FCF_DISC_INPROGRESS; phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); @@ -1695,6 +1698,37 @@ lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, next_fcf_index); } +/** + lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF + * @phba: pointer to lpfc hba data structure. + * @fcf_rec: pointer to an existing FCF record. + * @new_fcf_record: pointer to a new FCF record. + * @new_vlan_id: vlan id from the new FCF record. + * + * This function performs matching test of a new FCF record against an existing + * FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id + * will not be used as part of the FCF record matching criteria. + * + * Returns true if all the fields matching, otherwise returns false. + */ +static bool +lpfc_sli4_fcf_record_match(struct lpfc_hba *phba, + struct lpfc_fcf_rec *fcf_rec, + struct fcf_record *new_fcf_record, + uint16_t new_vlan_id) +{ + if (new_vlan_id != LPFC_FCOE_IGNORE_VID) + if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id)) + return false; + if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record)) + return false; + if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record)) + return false; + if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record)) + return false; + return true; +} + /** * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. * @phba: pointer to lpfc hba data structure. @@ -1758,7 +1792,7 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) */ if (!rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, - "2781 FCF record fcf_index:x%x failed FCF " + "2781 FCF record (x%x) failed FCF " "connection list check, fcf_avail:x%x, " "fcf_valid:x%x\n", bf_get(lpfc_fcf_record_fcf_index, @@ -1767,6 +1801,32 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) new_fcf_record), bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record)); + if ((phba->fcf.fcf_flag & FCF_IN_USE) && + lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, + new_fcf_record, LPFC_FCOE_IGNORE_VID)) { + /* + * In case the current in-use FCF record becomes + * invalid/unavailable during FCF discovery that + * was not triggered by fast FCF failover process, + * treat it as fast FCF failover. + */ + if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) && + !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "2835 Invalid in-use FCF " + "record (x%x) reported, " + "entering fast FCF failover " + "mode scanning.\n", + phba->fcf.current_rec.fcf_indx); + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag |= FCF_REDISC_FOV; + spin_unlock_irq(&phba->hbalock); + lpfc_sli4_mbox_cmd_free(phba, mboxq); + lpfc_sli4_fcf_scan_read_fcf_rec(phba, + LPFC_FCOE_FCF_GET_FIRST); + return; + } + } goto read_next_fcf; } else { fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); @@ -1783,14 +1843,8 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) */ spin_lock_irq(&phba->hbalock); if (phba->fcf.fcf_flag & FCF_IN_USE) { - if (lpfc_fab_name_match(phba->fcf.current_rec.fabric_name, - new_fcf_record) && - lpfc_sw_name_match(phba->fcf.current_rec.switch_name, - new_fcf_record) && - lpfc_mac_addr_match(phba->fcf.current_rec.mac_addr, - new_fcf_record) && - lpfc_vlan_id_match(phba->fcf.current_rec.vlan_id, - vlan_id)) { + if (lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec, + new_fcf_record, vlan_id)) { phba->fcf.fcf_flag |= FCF_AVAILABLE; if (phba->fcf.fcf_flag & FCF_REDISC_PEND) /* Stop FCF redisc wait timer if pending */ @@ -1800,6 +1854,13 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); spin_unlock_irq(&phba->hbalock); + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2836 The new FCF record (x%x) " + "matches the in-use FCF record " + "(x%x)\n", + phba->fcf.current_rec.fcf_indx, + bf_get(lpfc_fcf_record_fcf_index, + new_fcf_record)); goto out; } /* @@ -1831,6 +1892,12 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) */ if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) { /* Choose this FCF record */ + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2837 Update current FCF record " + "(x%x) with new FCF record (x%x)\n", + fcf_rec->fcf_indx, + bf_get(lpfc_fcf_record_fcf_index, + new_fcf_record)); __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, addr_mode, vlan_id, BOOT_ENABLE); spin_unlock_irq(&phba->hbalock); @@ -1851,6 +1918,12 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) */ if (new_fcf_record->fip_priority < fcf_rec->priority) { /* Choose the new FCF record with lower priority */ + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2838 Update current FCF record " + "(x%x) with new FCF record (x%x)\n", + fcf_rec->fcf_indx, + bf_get(lpfc_fcf_record_fcf_index, + new_fcf_record)); __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, addr_mode, vlan_id, 0); /* Reset running random FCF selection count */ @@ -1860,11 +1933,18 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) phba->fcf.eligible_fcf_cnt++; select_new_fcf = lpfc_sli4_new_fcf_random_select(phba, phba->fcf.eligible_fcf_cnt); - if (select_new_fcf) + if (select_new_fcf) { + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2839 Update current FCF record " + "(x%x) with new FCF record (x%x)\n", + fcf_rec->fcf_indx, + bf_get(lpfc_fcf_record_fcf_index, + new_fcf_record)); /* Choose the new FCF by random selection */ __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, addr_mode, vlan_id, 0); + } } spin_unlock_irq(&phba->hbalock); goto read_next_fcf; @@ -1874,6 +1954,11 @@ lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) * initial best-fit FCF. */ if (fcf_rec) { + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2840 Update current FCF record " + "with initial FCF record (x%x)\n", + bf_get(lpfc_fcf_record_fcf_index, + new_fcf_record)); __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, addr_mode, vlan_id, (boot_flag ? BOOT_ENABLE : 0)); @@ -1931,6 +2016,12 @@ read_next_fcf: lpfc_unregister_fcf(phba); /* Replace in-use record with the new record */ + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2842 Replace the current in-use " + "FCF record (x%x) with failover FCF " + "record (x%x)\n", + phba->fcf.current_rec.fcf_indx, + phba->fcf.failover_rec.fcf_indx); memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, sizeof(struct lpfc_fcf_rec)); @@ -1954,6 +2045,28 @@ read_next_fcf: if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) || (phba->fcf.fcf_flag & FCF_REDISC_PEND)) return; + + if (phba->fcf.fcf_flag & FCF_IN_USE) { + /* + * In case the current in-use FCF record no + * longer existed during FCF discovery that + * was not triggered by fast FCF failover + * process, treat it as fast FCF failover. + */ + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2841 In-use FCF record (x%x) " + "not reported, entering fast " + "FCF failover mode scanning.\n", + phba->fcf.current_rec.fcf_indx); + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag |= FCF_REDISC_FOV; + spin_unlock_irq(&phba->hbalock); + lpfc_sli4_mbox_cmd_free(phba, mboxq); + lpfc_sli4_fcf_scan_read_fcf_rec(phba, + LPFC_FCOE_FCF_GET_FIRST); + return; + } + /* * Otherwise, initial scan or post linkdown rescan, * register with the best FCF record found so far @@ -2036,6 +2149,11 @@ lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) next_fcf_index); /* Upload new FCF record to the failover FCF record */ + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2834 Update the current FCF record (x%x) " + "with the next FCF record (x%x)\n", + phba->fcf.failover_rec.fcf_indx, + bf_get(lpfc_fcf_record_fcf_index, new_fcf_record)); spin_lock_irq(&phba->hbalock); __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, new_fcf_record, addr_mode, vlan_id, @@ -2053,7 +2171,7 @@ lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) lpfc_printf_log(phba, KERN_INFO, LOG_FIP, "2783 FLOGI round robin FCF failover from FCF " - "(index:x%x) to FCF (index:x%x).\n", + "(x%x) to FCF (x%x).\n", current_fcf_index, bf_get(lpfc_fcf_record_fcf_index, new_fcf_record)); @@ -5217,7 +5335,8 @@ lpfc_unregister_unused_fcf(struct lpfc_hba *phba) spin_lock_irq(&phba->hbalock); if (!(phba->hba_flag & HBA_FCOE_SUPPORT) || !(phba->fcf.fcf_flag & FCF_REGISTERED) || - !(phba->hba_flag & HBA_FIP_SUPPORT)) { + !(phba->hba_flag & HBA_FIP_SUPPORT) || + (phba->pport->port_state == LPFC_FLOGI)) { spin_unlock_irq(&phba->hbalock); return; } diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 9c609546b4ef..f38c05dc5635 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -12404,7 +12404,8 @@ lpfc_sli4_fcf_rr_next_index_get(struct lpfc_hba *phba) next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask, LPFC_SLI4_FCF_TBL_INDX_MAX, 0); /* Round robin failover stop condition */ - if (next_fcf_index == phba->fcf.fcf_rr_init_indx) + if ((next_fcf_index == phba->fcf.fcf_rr_init_indx) || + (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX)) return LPFC_FCOE_FCF_NEXT_NONE; return next_fcf_index; diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index ccdb95774e84..7686c1a9a634 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -51,6 +51,9 @@ #define LPFC_FCOE_FCF_GET_FIRST 0xFFFF #define LPFC_FCOE_FCF_NEXT_NONE 0xFFFF +#define LPFC_FCOE_NULL_VID 0xFFF +#define LPFC_FCOE_IGNORE_VID 0xFFFF + /* First 3 bytes of default FCF MAC is specified by FC_MAP */ #define LPFC_FCOE_FCF_MAC3 0xFF #define LPFC_FCOE_FCF_MAC4 0xFF -- 2.20.1