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[SCSI] lpfc 8.3.25: Add FCF priority failover functionality

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This patch implements a new FCF failover policy for the lpfc driver. It
allows the driver to choose which FCF to failover to based on the FCF
priority. This patch also introduces a new sysfs parameter
(fcf_failover_policy) to allow the user to choose which FCF failover policy
to use.

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Smart
2011-07-22 18:37:52 -04:00
committed by James Bottomley
parent b76f2dc91c
commit 7d791df730
8 changed files with 377 additions and 20 deletions
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2
drivers/scsi/lpfc/lpfc_crtn.h
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@@ -235,9 +235,11 @@ int lpfc_sli4_redisc_fcf_table(struct lpfc_hba *);
void lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *);
void lpfc_sli4_fcf_dead_failthrough(struct lpfc_hba *);
uint16_t lpfc_sli4_fcf_rr_next_index_get(struct lpfc_hba *);
void lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *, uint16_t);
int lpfc_sli4_fcf_rr_index_set(struct lpfc_hba *, uint16_t);
void lpfc_sli4_fcf_rr_index_clear(struct lpfc_hba *, uint16_t);
int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *, uint16_t);
void lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *);
int lpfc_mem_alloc(struct lpfc_hba *, int align);
void lpfc_mem_free(struct lpfc_hba *);