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| author | James Smart <jsmart2021@gmail.com> | 2017-08-23 16:55:47 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-08-24 22:29:43 -0400 |
| commit | 44fd7fe3dd2ce9dba873a0522e1eeab9ab5d5651 (patch) | |
| tree | 125bed5530d161319e33bc39c322f601d12c251d /drivers/scsi/lpfc/lpfc_hbadisc.c | |
| parent | d58734f05ff0aaa787eeedd1e790fee6c9e92af8 (diff) | |
| download | lwn-44fd7fe3dd2ce9dba873a0522e1eeab9ab5d5651.tar.gz lwn-44fd7fe3dd2ce9dba873a0522e1eeab9ab5d5651.zip | |
scsi: lpfc: Add Buffer to Buffer credit recovery support
Add Buffer to buffer credit recovery support to the driver. This is a
negotiated feature with the peer that allows for both sides to detect
dropped RRDY's and FC Frames and recover credit.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
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 | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index aa5e5ff56dfb..20808349a80e 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -1108,6 +1108,7 @@ void lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { struct lpfc_vport *vport = pmb->vport; + uint8_t bbscn = 0; if (pmb->u.mb.mbxStatus) goto out; @@ -1134,10 +1135,17 @@ lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) /* Start discovery by sending a FLOGI. port_state is identically * LPFC_FLOGI while waiting for FLOGI cmpl */ - if (vport->port_state != LPFC_FLOGI) + if (vport->port_state != LPFC_FLOGI) { + if (phba->bbcredit_support && phba->cfg_enable_bbcr) { + bbscn = bf_get(lpfc_bbscn_def, + &phba->sli4_hba.bbscn_params); + vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf; + vport->fc_sparam.cmn.bbRcvSizeMsb |= (bbscn << 4); + } lpfc_initial_flogi(vport); - else if (vport->fc_flag & FC_PT2PT) + } else if (vport->fc_flag & FC_PT2PT) { lpfc_disc_start(vport); + } return; out: |