diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.c | 55 |
1 files changed, 48 insertions, 7 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 086f952..e758eae 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -12405,19 +12405,47 @@ lpfc_sli4_fcf_rr_next_index_get(struct lpfc_hba *phba) { uint16_t next_fcf_index; - /* Search from the currently registered FCF index */ + /* Search start from next bit of currently registered FCF index */ + next_fcf_index = (phba->fcf.current_rec.fcf_indx + 1) % + LPFC_SLI4_FCF_TBL_INDX_MAX; next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask, LPFC_SLI4_FCF_TBL_INDX_MAX, - phba->fcf.current_rec.fcf_indx); + next_fcf_index); + /* Wrap around condition on phba->fcf.fcf_rr_bmask */ if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) 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) || - (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX)) + + /* Check roundrobin failover list empty condition */ + if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "2844 No roundrobin failover FCF available\n"); return LPFC_FCOE_FCF_NEXT_NONE; + } + + /* Check roundrobin failover index bmask stop condition */ + if (next_fcf_index == phba->fcf.fcf_rr_init_indx) { + if (!(phba->fcf.fcf_flag & FCF_REDISC_RRU)) { + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "2847 Round robin failover FCF index " + "search hit stop condition:x%x\n", + next_fcf_index); + return LPFC_FCOE_FCF_NEXT_NONE; + } + /* The roundrobin failover index bmask updated, start over */ + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2848 Round robin failover FCF index bmask " + "updated, start over\n"); + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_REDISC_RRU; + spin_unlock_irq(&phba->hbalock); + return phba->fcf.fcf_rr_init_indx; + } + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2845 Get next round robin failover " + "FCF index x%x\n", next_fcf_index); return next_fcf_index; } @@ -12447,11 +12475,20 @@ lpfc_sli4_fcf_rr_index_set(struct lpfc_hba *phba, uint16_t fcf_index) /* Set the eligible FCF record index bmask */ set_bit(fcf_index, phba->fcf.fcf_rr_bmask); + /* Set the roundrobin index bmask updated */ + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag |= FCF_REDISC_RRU; + spin_unlock_irq(&phba->hbalock); + + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2790 Set FCF index x%x to round robin failover " + "bmask\n", fcf_index); + return 0; } /** - * lpfc_sli4_fcf_rr_index_set - Clear bmask from eligible fcf record index + * lpfc_sli4_fcf_rr_index_clear - Clear bmask from eligible fcf record index * @phba: pointer to lpfc hba data structure. * * This routine clears the FCF record index from the eligible bmask for @@ -12472,6 +12509,10 @@ lpfc_sli4_fcf_rr_index_clear(struct lpfc_hba *phba, uint16_t fcf_index) } /* Clear the eligible FCF record index bmask */ clear_bit(fcf_index, phba->fcf.fcf_rr_bmask); + + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2791 Clear FCF index x%x from round robin failover " + "bmask\n", fcf_index); } /** @@ -12534,7 +12575,7 @@ lpfc_mbx_cmpl_redisc_fcf_table(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox) } /** - * lpfc_sli4_redisc_all_fcf - Request to rediscover entire FCF table by port. + * lpfc_sli4_redisc_fcf_table - Request to rediscover entire FCF table by port. * @phba: pointer to lpfc hba data structure. * * This routine is invoked to request for rediscovery of the entire FCF table |