diff options
| author | James Smart <jsmart2021@gmail.com> | 2021-08-16 19:28:50 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-08-25 05:56:33 +0300 |
| commit | 9064aeb2df8e8185f649afa4600edcd8f6a9f6fd (patch) | |
| tree | 4e9435c0a8e96ac415c3add941926498c6af7bf2 /drivers/scsi/lpfc/lpfc_hbadisc.c | |
| parent | 428569e66fa7ef4a41fbea9fa80f559914a74667 (diff) | |
| download | linux-9064aeb2df8e8185f649afa4600edcd8f6a9f6fd.tar.xz | |
scsi: lpfc: Add EDC ELS support
When congestion management is enabled, issue EDC ELS to register congestion
signaling capabilities with the fabric. The response handling will process
the fabric parameters and set the reporting parameters.
Similarly, add support for receiving an EDC request from the fabric
generating a corresponding response.
Implement handlers for congestion signals from the fabric and maintain
statistics for them.
Link: https://lore.kernel.org/r/20210816162901.121235-6-jsmart2021@gmail.com
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.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 | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 6da2daf7d9e3..95989230b47e 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -4209,6 +4209,7 @@ lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *)(pmb->ctx_buf); struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp; struct lpfc_vport *vport = pmb->vport; + int rc; pmb->ctx_buf = NULL; pmb->ctx_ndlp = NULL; @@ -4284,9 +4285,23 @@ out: /* Issue SCR just before NameServer GID_FT Query */ lpfc_issue_els_scr(vport, 0); - if (!phba->cfg_enable_mi || - phba->sli4_hba.pc_sli4_params.mi_ver < LPFC_MIB3_SUPPORT) + /* Link was bounced or a Fabric LOGO occurred. Start EDC + * with initial FW values provided the congestion mode is + * not off. Note that signals may or may not be supported + * by the adapter but FPIN is provided by default for 1 + * or both missing signals support. + */ + if (phba->cmf_active_mode != LPFC_CFG_OFF) { + phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; + phba->cgn_reg_signal = phba->cgn_init_reg_signal; + rc = lpfc_issue_els_edc(vport, 0); + lpfc_printf_log(phba, KERN_INFO, + LOG_INIT | LOG_ELS | LOG_DISCOVERY, + "4220 EDC issue error x%x, Data: x%x\n", + rc, phba->cgn_init_reg_signal); + } else { lpfc_issue_els_rdf(vport, 0); + } } vport->fc_ns_retry = 0; |