diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_hbadisc.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_hbadisc.c | 528 |
1 files changed, 412 insertions, 116 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 2359d0bfb73..e1466eec56b 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -20,6 +20,7 @@ *******************************************************************/ #include <linux/blkdev.h> +#include <linux/slab.h> #include <linux/pci.h> #include <linux/kthread.h> #include <linux/interrupt.h> @@ -1481,8 +1482,6 @@ lpfc_match_fcf_conn_list(struct lpfc_hba *phba, 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. @@ -1491,86 +1490,70 @@ lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) return 0; + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2768 Pending link or FCF event during current " + "handling of the previous event: link_state:x%x, " + "evt_tag_at_scan:x%x, evt_tag_current:x%x\n", + phba->link_state, phba->fcoe_eventtag_at_fcf_scan, + phba->fcoe_eventtag); + 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); - else { + if (phba->link_state >= LPFC_LINK_UP) { + lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, + "2780 Restart FCF table scan due to " + "pending FCF event:evt_tag_at_scan:x%x, " + "evt_tag_current:x%x\n", + phba->fcoe_eventtag_at_fcf_scan, + phba->fcoe_eventtag); + lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); + } else { /* * Do not continue FCF discovery and clear FCF_DISC_INPROGRESS * flag */ spin_lock_irq(&phba->hbalock); phba->hba_flag &= ~FCF_DISC_INPROGRESS; - phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; + phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY); spin_unlock_irq(&phba->hbalock); } + /* Unregister the currently registered FCF if required */ 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); - } + lpfc_sli4_unregister_fcf(phba); } - return 1; } /** - * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox. + * lpfc_sli4_fcf_rec_mbox_parse - parse non-embedded fcf record mailbox command * @phba: pointer to lpfc hba data structure. * @mboxq: pointer to mailbox object. + * @next_fcf_index: pointer to holder of next fcf index. * - * This function iterate through all the fcf records available in - * HBA and choose the optimal FCF record for discovery. After finding - * the FCF for discovery it register the FCF record and kick start - * discovery. - * If FCF_IN_USE flag is set in currently used FCF, the routine try to - * use a FCF record which match fabric name and mac address of the - * currently used FCF record. - * If the driver support only one FCF, it will try to use the FCF record - * used by BOOT_BIOS. + * This routine parses the non-embedded fcf mailbox command by performing the + * necessarily error checking, non-embedded read FCF record mailbox command + * SGE parsing, and endianness swapping. + * + * Returns the pointer to the new FCF record in the non-embedded mailbox + * command DMA memory if successfully, other NULL. */ -void -lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) +static struct fcf_record * +lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, + uint16_t *next_fcf_index) { void *virt_addr; dma_addr_t phys_addr; - uint8_t *bytep; struct lpfc_mbx_sge sge; struct lpfc_mbx_read_fcf_tbl *read_fcf; uint32_t shdr_status, shdr_add_status; union lpfc_sli4_cfg_shdr *shdr; struct fcf_record *new_fcf_record; - uint32_t boot_flag, addr_mode; - uint32_t next_fcf_index; - struct lpfc_fcf_rec *fcf_rec = NULL; - unsigned long iflags; - uint16_t vlan_id; - int rc; - - /* 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. @@ -1581,59 +1564,183 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, "2524 Failed to get the non-embedded SGE " "virtual address\n"); - goto out; + return NULL; } virt_addr = mboxq->sge_array->addr[0]; shdr = (union lpfc_sli4_cfg_shdr *)virt_addr; shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); - shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, - &shdr->response); - /* - * The FCF Record was read and there is no reason for the driver - * to maintain the FCF record data or memory. Instead, just need - * to book keeping the FCFIs can be used. - */ + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); if (shdr_status || shdr_add_status) { - if (shdr_status == STATUS_FCF_TABLE_EMPTY) { - lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + if (shdr_status == STATUS_FCF_TABLE_EMPTY) + lpfc_printf_log(phba, KERN_ERR, LOG_FIP, "2726 READ_FCF_RECORD Indicates empty " "FCF table.\n"); - } else { - lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + else + lpfc_printf_log(phba, KERN_ERR, LOG_FIP, "2521 READ_FCF_RECORD mailbox failed " - "with status x%x add_status x%x, mbx\n", - shdr_status, shdr_add_status); - } - goto out; + "with status x%x add_status x%x, " + "mbx\n", shdr_status, shdr_add_status); + return NULL; } - /* Interpreting the returned information of FCF records */ + + /* Interpreting the returned information of the FCF record */ read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; lpfc_sli_pcimem_bcopy(read_fcf, read_fcf, sizeof(struct lpfc_mbx_read_fcf_tbl)); - next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); - + *next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf); new_fcf_record = (struct fcf_record *)(virt_addr + sizeof(struct lpfc_mbx_read_fcf_tbl)); lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record, sizeof(struct fcf_record)); - bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr); + return new_fcf_record; +} + +/** + * lpfc_sli4_log_fcf_record_info - Log the information of a fcf record + * @phba: pointer to lpfc hba data structure. + * @fcf_record: pointer to the fcf record. + * @vlan_id: the lowest vlan identifier associated to this fcf record. + * @next_fcf_index: the index to the next fcf record in hba's fcf table. + * + * This routine logs the detailed FCF record if the LOG_FIP loggin is + * enabled. + **/ +static void +lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba, + struct fcf_record *fcf_record, + uint16_t vlan_id, + uint16_t next_fcf_index) +{ + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2764 READ_FCF_RECORD:\n" + "\tFCF_Index : x%x\n" + "\tFCF_Avail : x%x\n" + "\tFCF_Valid : x%x\n" + "\tFIP_Priority : x%x\n" + "\tMAC_Provider : x%x\n" + "\tLowest VLANID : x%x\n" + "\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n" + "\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" + "\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n" + "\tNext_FCF_Index: x%x\n", + bf_get(lpfc_fcf_record_fcf_index, fcf_record), + bf_get(lpfc_fcf_record_fcf_avail, fcf_record), + bf_get(lpfc_fcf_record_fcf_valid, fcf_record), + fcf_record->fip_priority, + bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record), + vlan_id, + bf_get(lpfc_fcf_record_mac_0, fcf_record), + bf_get(lpfc_fcf_record_mac_1, fcf_record), + bf_get(lpfc_fcf_record_mac_2, fcf_record), + bf_get(lpfc_fcf_record_mac_3, fcf_record), + bf_get(lpfc_fcf_record_mac_4, fcf_record), + bf_get(lpfc_fcf_record_mac_5, fcf_record), + bf_get(lpfc_fcf_record_fab_name_0, fcf_record), + bf_get(lpfc_fcf_record_fab_name_1, fcf_record), + bf_get(lpfc_fcf_record_fab_name_2, fcf_record), + bf_get(lpfc_fcf_record_fab_name_3, fcf_record), + bf_get(lpfc_fcf_record_fab_name_4, fcf_record), + bf_get(lpfc_fcf_record_fab_name_5, fcf_record), + bf_get(lpfc_fcf_record_fab_name_6, fcf_record), + bf_get(lpfc_fcf_record_fab_name_7, fcf_record), + bf_get(lpfc_fcf_record_switch_name_0, fcf_record), + bf_get(lpfc_fcf_record_switch_name_1, fcf_record), + bf_get(lpfc_fcf_record_switch_name_2, fcf_record), + bf_get(lpfc_fcf_record_switch_name_3, fcf_record), + bf_get(lpfc_fcf_record_switch_name_4, fcf_record), + bf_get(lpfc_fcf_record_switch_name_5, fcf_record), + bf_get(lpfc_fcf_record_switch_name_6, fcf_record), + bf_get(lpfc_fcf_record_switch_name_7, fcf_record), + next_fcf_index); +} + +/** + * lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler. + * @phba: pointer to lpfc hba data structure. + * @mboxq: pointer to mailbox object. + * + * This function iterates through all the fcf records available in + * HBA and chooses the optimal FCF record for discovery. After finding + * the FCF for discovery it registers the FCF record and kicks start + * discovery. + * If FCF_IN_USE flag is set in currently used FCF, the routine tries to + * use an FCF record which matches fabric name and mac address of the + * currently used FCF record. + * If the driver supports only one FCF, it will try to use the FCF record + * used by BOOT_BIOS. + */ +void +lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) +{ + struct fcf_record *new_fcf_record; + uint32_t boot_flag, addr_mode; + uint16_t fcf_index, next_fcf_index; + struct lpfc_fcf_rec *fcf_rec = NULL; + uint16_t vlan_id; + int rc; + + /* 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; + } + + /* Parse the FCF record from the non-embedded mailbox command */ + new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, + &next_fcf_index); + if (!new_fcf_record) { + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "2765 Mailbox command READ_FCF_RECORD " + "failed to retrieve a FCF record.\n"); + /* Let next new FCF event trigger fast failover */ + spin_lock_irq(&phba->hbalock); + phba->hba_flag &= ~FCF_DISC_INPROGRESS; + spin_unlock_irq(&phba->hbalock); + lpfc_sli4_mbox_cmd_free(phba, mboxq); + return; + } + + /* Check the FCF record against the connection list */ rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, &addr_mode, &vlan_id); + + /* Log the FCF record information if turned on */ + lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, + next_fcf_index); + /* * If the fcf record does not match with connect list entries - * read the next entry. + * read the next entry; otherwise, this is an eligible FCF + * record for round robin FCF failover. */ - if (!rc) + if (!rc) { + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "2781 FCF record fcf_index:x%x failed FCF " + "connection list check, fcf_avail:x%x, " + "fcf_valid:x%x\n", + bf_get(lpfc_fcf_record_fcf_index, + new_fcf_record), + bf_get(lpfc_fcf_record_fcf_avail, + new_fcf_record), + bf_get(lpfc_fcf_record_fcf_valid, + new_fcf_record)); goto read_next_fcf; + } else { + fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); + rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index); + if (rc) + goto read_next_fcf; + } + /* * If this is not the first FCF discovery of the HBA, use last * FCF record for the discovery. The condition that a rescan * matches the in-use FCF record: fabric name, switch name, mac * address, and vlan_id. */ - spin_lock_irqsave(&phba->hbalock, iflags); + 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) && @@ -1649,8 +1756,9 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) __lpfc_sli4_stop_fcf_redisc_wait_timer(phba); else if (phba->fcf.fcf_flag & FCF_REDISC_FOV) /* If in fast failover, mark it's completed */ - phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; - spin_unlock_irqrestore(&phba->hbalock, iflags); + phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | + FCF_DISCOVERY); + spin_unlock_irq(&phba->hbalock); goto out; } /* @@ -1661,7 +1769,7 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) * next candidate. */ if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) { - spin_unlock_irqrestore(&phba->hbalock, iflags); + spin_unlock_irq(&phba->hbalock); goto read_next_fcf; } } @@ -1669,14 +1777,9 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) * Update on failover FCF record only if it's in FCF fast-failover * period; otherwise, update on current FCF record. */ - if (phba->fcf.fcf_flag & FCF_REDISC_FOV) { - /* Fast FCF failover only to the same fabric name */ - if (lpfc_fab_name_match(phba->fcf.current_rec.fabric_name, - new_fcf_record)) - fcf_rec = &phba->fcf.failover_rec; - else - goto read_next_fcf; - } else + if (phba->fcf.fcf_flag & FCF_REDISC_FOV) + fcf_rec = &phba->fcf.failover_rec; + else fcf_rec = &phba->fcf.current_rec; if (phba->fcf.fcf_flag & FCF_AVAILABLE) { @@ -1689,7 +1792,7 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) /* Choose this FCF record */ __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, addr_mode, vlan_id, BOOT_ENABLE); - spin_unlock_irqrestore(&phba->hbalock, iflags); + spin_unlock_irq(&phba->hbalock); goto read_next_fcf; } /* @@ -1698,20 +1801,19 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) * the next FCF record. */ if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) { - spin_unlock_irqrestore(&phba->hbalock, iflags); + spin_unlock_irq(&phba->hbalock); goto read_next_fcf; } /* * If the new hba FCF record has lower priority value * than the driver FCF record, use the new record. */ - if (lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record) && - (new_fcf_record->fip_priority < fcf_rec->priority)) { + if (new_fcf_record->fip_priority < fcf_rec->priority) { /* Choose this FCF record */ __lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record, addr_mode, vlan_id, 0); } - spin_unlock_irqrestore(&phba->hbalock, iflags); + spin_unlock_irq(&phba->hbalock); goto read_next_fcf; } /* @@ -1724,7 +1826,7 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) BOOT_ENABLE : 0)); phba->fcf.fcf_flag |= FCF_AVAILABLE; } - spin_unlock_irqrestore(&phba->hbalock, iflags); + spin_unlock_irq(&phba->hbalock); goto read_next_fcf; read_next_fcf: @@ -1740,9 +1842,22 @@ read_next_fcf: * FCF scan inprogress, and do nothing */ if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) { - spin_lock_irqsave(&phba->hbalock, iflags); + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "2782 No suitable FCF record " + "found during this round of " + "post FCF rediscovery scan: " + "fcf_evt_tag:x%x, fcf_index: " + "x%x\n", + phba->fcoe_eventtag_at_fcf_scan, + bf_get(lpfc_fcf_record_fcf_index, + new_fcf_record)); + /* + * Let next new FCF event trigger fast + * failover + */ + spin_lock_irq(&phba->hbalock); phba->hba_flag &= ~FCF_DISC_INPROGRESS; - spin_unlock_irqrestore(&phba->hbalock, iflags); + spin_unlock_irq(&phba->hbalock); return; } /* @@ -1754,16 +1869,23 @@ read_next_fcf: * record. */ - /* unregister the current in-use FCF record */ + /* Unregister the current in-use FCF record */ lpfc_unregister_fcf(phba); - /* replace in-use record with the new record */ + + /* Replace in-use record with the new record */ memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, sizeof(struct lpfc_fcf_rec)); /* mark the FCF fast failover completed */ - spin_lock_irqsave(&phba->hbalock, iflags); + spin_lock_irq(&phba->hbalock); phba->fcf.fcf_flag &= ~FCF_REDISC_FOV; - spin_unlock_irqrestore(&phba->hbalock, iflags); + spin_unlock_irq(&phba->hbalock); + /* + * Set up the initial registered FCF index for FLOGI + * round robin FCF failover. + */ + phba->fcf.fcf_rr_init_indx = + phba->fcf.failover_rec.fcf_indx; /* Register to the new FCF record */ lpfc_register_fcf(phba); } else { @@ -1776,13 +1898,25 @@ read_next_fcf: return; /* * Otherwise, initial scan or post linkdown rescan, - * register with the best fit FCF record found so - * far through the scanning process. + * register with the best FCF record found so far + * through the FCF scanning process. + */ + + /* mark the initial FCF discovery completed */ + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_INIT_DISC; + spin_unlock_irq(&phba->hbalock); + /* + * Set up the initial registered FCF index for FLOGI + * round robin FCF failover */ + phba->fcf.fcf_rr_init_indx = + phba->fcf.current_rec.fcf_indx; + /* Register to the new FCF record */ lpfc_register_fcf(phba); } } else - lpfc_sli4_read_fcf_record(phba, next_fcf_index); + lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index); return; out: @@ -1793,6 +1927,141 @@ out: } /** + * lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf round robin read_fcf mbox cmpl hdler + * @phba: pointer to lpfc hba data structure. + * @mboxq: pointer to mailbox object. + * + * This is the callback function for FLOGI failure round robin FCF failover + * read FCF record mailbox command from the eligible FCF record bmask for + * performing the failover. If the FCF read back is not valid/available, it + * fails through to retrying FLOGI to the currently registered FCF again. + * Otherwise, if the FCF read back is valid and available, it will set the + * newly read FCF record to the failover FCF record, unregister currently + * registered FCF record, copy the failover FCF record to the current + * FCF record, and then register the current FCF record before proceeding + * to trying FLOGI on the new failover FCF. + */ +void +lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) +{ + struct fcf_record *new_fcf_record; + uint32_t boot_flag, addr_mode; + uint16_t next_fcf_index; + uint16_t current_fcf_index; + uint16_t vlan_id; + + /* If link state is not up, stop the round robin failover process */ + if (phba->link_state < LPFC_LINK_UP) { + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_DISCOVERY; + spin_unlock_irq(&phba->hbalock); + lpfc_sli4_mbox_cmd_free(phba, mboxq); + return; + } + + /* Parse the FCF record from the non-embedded mailbox command */ + new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, + &next_fcf_index); + if (!new_fcf_record) { + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "2766 Mailbox command READ_FCF_RECORD " + "failed to retrieve a FCF record.\n"); + goto out; + } + + /* Get the needed parameters from FCF record */ + lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, + &addr_mode, &vlan_id); + + /* Log the FCF record information if turned on */ + lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, + next_fcf_index); + + /* Upload new FCF record to the failover FCF record */ + spin_lock_irq(&phba->hbalock); + __lpfc_update_fcf_record(phba, &phba->fcf.failover_rec, + new_fcf_record, addr_mode, vlan_id, + (boot_flag ? BOOT_ENABLE : 0)); + spin_unlock_irq(&phba->hbalock); + + current_fcf_index = phba->fcf.current_rec.fcf_indx; + + /* Unregister the current in-use FCF record */ + lpfc_unregister_fcf(phba); + + /* Replace in-use record with the new record */ + memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec, + sizeof(struct lpfc_fcf_rec)); + + 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", + current_fcf_index, + bf_get(lpfc_fcf_record_fcf_index, new_fcf_record)); + +out: + lpfc_sli4_mbox_cmd_free(phba, mboxq); + lpfc_register_fcf(phba); +} + +/** + * lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler. + * @phba: pointer to lpfc hba data structure. + * @mboxq: pointer to mailbox object. + * + * This is the callback function of read FCF record mailbox command for + * updating the eligible FCF bmask for FLOGI failure round robin FCF + * failover when a new FCF event happened. If the FCF read back is + * valid/available and it passes the connection list check, it updates + * the bmask for the eligible FCF record for round robin failover. + */ +void +lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) +{ + struct fcf_record *new_fcf_record; + uint32_t boot_flag, addr_mode; + uint16_t fcf_index, next_fcf_index; + uint16_t vlan_id; + int rc; + + /* If link state is not up, no need to proceed */ + if (phba->link_state < LPFC_LINK_UP) + goto out; + + /* If FCF discovery period is over, no need to proceed */ + if (phba->fcf.fcf_flag & FCF_DISCOVERY) + goto out; + + /* Parse the FCF record from the non-embedded mailbox command */ + new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq, + &next_fcf_index); + if (!new_fcf_record) { + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2767 Mailbox command READ_FCF_RECORD " + "failed to retrieve a FCF record.\n"); + goto out; + } + + /* Check the connection list for eligibility */ + rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag, + &addr_mode, &vlan_id); + + /* Log the FCF record information if turned on */ + lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id, + next_fcf_index); + + if (!rc) + goto out; + + /* Update the eligible FCF record index bmask */ + fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); + rc = lpfc_sli4_fcf_rr_index_set(phba, fcf_index); + +out: + lpfc_sli4_mbox_cmd_free(phba, mboxq); +} + +/** * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. * @phba: pointer to lpfc hba data structure. * @mboxq: pointer to mailbox data structure. @@ -2024,8 +2293,6 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) int rc; struct fcf_record *fcf_record; - sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); - spin_lock_irq(&phba->hbalock); switch (la->UlnkSpeed) { case LA_1GHZ_LINK: @@ -2117,18 +2384,24 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) spin_unlock_irq(&phba->hbalock); lpfc_linkup(phba); - if (sparam_mbox) { - 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); - if (rc == MBX_NOT_FINISHED) { - mp = (struct lpfc_dmabuf *) sparam_mbox->context1; - lpfc_mbuf_free(phba, mp->virt, mp->phys); - kfree(mp); - mempool_free(sparam_mbox, phba->mbox_mem_pool); - goto out; - } + sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!sparam_mbox) + goto out; + + rc = lpfc_read_sparam(phba, sparam_mbox, 0); + if (rc) { + mempool_free(sparam_mbox, phba->mbox_mem_pool); + goto out; + } + sparam_mbox->vport = vport; + sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; + 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); + kfree(mp); + mempool_free(sparam_mbox, phba->mbox_mem_pool); + goto out; } if (!(phba->hba_flag & HBA_FCOE_SUPPORT)) { @@ -2186,10 +2459,20 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) spin_unlock_irq(&phba->hbalock); return; } + /* This is the initial FCF discovery scan */ + phba->fcf.fcf_flag |= FCF_INIT_DISC; spin_unlock_irq(&phba->hbalock); - rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST); - if (rc) + lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY, + "2778 Start FCF table scan at linkup\n"); + + rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, + LPFC_FCOE_FCF_GET_FIRST); + if (rc) { + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_INIT_DISC; + spin_unlock_irq(&phba->hbalock); goto out; + } } return; @@ -3379,8 +3662,12 @@ lpfc_unreg_hba_rpis(struct lpfc_hba *phba) shost = lpfc_shost_from_vport(vports[i]); spin_lock_irq(shost->host_lock); list_for_each_entry(ndlp, &vports[i]->fc_nodes, nlp_listp) { - if (ndlp->nlp_flag & NLP_RPI_VALID) + if (ndlp->nlp_flag & NLP_RPI_VALID) { + /* The mempool_alloc might sleep */ + spin_unlock_irq(shost->host_lock); lpfc_unreg_rpi(vports[i], ndlp); + spin_lock_irq(shost->host_lock); + } } spin_unlock_irq(shost->host_lock); } @@ -4756,6 +5043,7 @@ lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) return; /* Reset HBA FCF states after successful unregister FCF */ phba->fcf.fcf_flag = 0; + phba->fcf.current_rec.flag = 0; /* * If driver is not unloading, check if there is any other @@ -4765,13 +5053,21 @@ lpfc_unregister_fcf_rescan(struct lpfc_hba *phba) (phba->link_state < LPFC_LINK_UP)) return; - rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST); + /* This is considered as the initial FCF discovery scan */ + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag |= FCF_INIT_DISC; + spin_unlock_irq(&phba->hbalock); + rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST); - if (rc) + if (rc) { + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_INIT_DISC; + spin_unlock_irq(&phba->hbalock); lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, "2553 lpfc_unregister_unused_fcf failed " "to read FCF record HBA state x%x\n", phba->pport->port_state); + } } /** |