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| author |   James Smart <jsmart2021@gmail.com> | 2018-10-23 13:41:10 -0700 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2018-11-06 20:42:51 -0500 |
| commit | 7ea92eb4589dbf0cff7ee169e3c23eae00149762 (patch) | |
| tree | c6f15521ae986f0b95d866ac62b1617a9166734f /drivers/scsi/lpfc/lpfc_hbadisc.c | |
| parent | scsi: lpfc: Correct loss of fc4 type on remote port address change (diff) | |
| download | linux-dev-7ea92eb4589dbf0cff7ee169e3c23eae00149762.tar.xz linux-dev-7ea92eb4589dbf0cff7ee169e3c23eae00149762.zip | |
scsi: lpfc: Implement GID_PT on Nameserver query to support faster failover
The switches seem to respond faster to GID_PT vs GID_FT NameServer
queries. Add support for GID_PT to be used over GID_FT to enable
faster storage failover detection. Includes addition of new module
parameter to select between GID_PT and GID_FT (GID_FT is default).
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_hbadisc.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_hbadisc.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index bfc4ac8fc426..1723382df8ce 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -3942,6 +3942,35 @@ lpfc_issue_gidft(struct lpfc_vport *vport) return vport->gidft_inp; } +/** + * lpfc_issue_gidpt - issue a GID_PT for all N_Ports + * @vport: The virtual port for which this call is being executed. + * + * This routine will issue a GID_PT to get a list of all N_Ports + * + * Return value : + * 0 - Failure to issue a GID_PT + * 1 - GID_PT issued + **/ +int +lpfc_issue_gidpt(struct lpfc_vport *vport) +{ + /* Good status, issue CT Request to NameServer */ + if (lpfc_ns_cmd(vport, SLI_CTNS_GID_PT, 0, GID_PT_N_PORT)) { + /* Cannot issue NameServer FCP Query, so finish up + * discovery + */ + lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI, + "0606 %s Port TYPE %x %s\n", + "Failed to issue GID_PT to ", + GID_PT_N_PORT, + "Finishing discovery."); + return 0; + } + vport->gidft_inp++; + return 1; +} + /* * This routine handles processing a NameServer REG_LOGIN mailbox * command upon completion. It is setup in the LPFC_MBOXQ |