diff options
| author | James Smart <jsmart2021@gmail.com> | 2021-08-16 09:28:50 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-08-24 22:56:33 -0400 |
| commit | 9064aeb2df8e8185f649afa4600edcd8f6a9f6fd (patch) | |
| tree | 4e9435c0a8e96ac415c3add941926498c6af7bf2 /drivers/scsi/lpfc/lpfc_attr.c | |
| parent | 428569e66fa7ef4a41fbea9fa80f559914a74667 (diff) | |
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_attr.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index 869c2b6f1515..d16d3544084f 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -6150,6 +6150,19 @@ LPFC_ATTR_RW(ras_fwlog_func, 0, 0, 7, "Firmware Logging Enabled on Function"); */ LPFC_BBCR_ATTR_RW(enable_bbcr, 1, 0, 1, "Enable BBC Recovery"); +/* Signaling module parameters */ +int lpfc_fabric_cgn_frequency = 100; /* 100 ms default */ +module_param(lpfc_fabric_cgn_frequency, int, 0444); +MODULE_PARM_DESC(lpfc_fabric_cgn_frequency, "Congestion signaling fabric freq"); + +int lpfc_acqe_cgn_frequency = 10; /* 10 sec default */ +module_param(lpfc_acqe_cgn_frequency, int, 0444); +MODULE_PARM_DESC(lpfc_acqe_cgn_frequency, "Congestion signaling ACQE freq"); + +int lpfc_use_cgn_signal = 1; /* 0 - only use FPINs, 1 - Use signals if avail */ +module_param(lpfc_use_cgn_signal, int, 0444); +MODULE_PARM_DESC(lpfc_use_cgn_signal, "Use Congestion signaling if available"); + /* * lpfc_enable_dpp: Enable DPP on G7 * 0 = DPP on G7 disabled @@ -6915,6 +6928,9 @@ lpfc_get_stats(struct Scsi_Host *shost) hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt; hs->error_frames = pmb->un.varRdLnk.crcCnt; + hs->cn_sig_warn = atomic64_read(&phba->cgn_acqe_stat.warn); + hs->cn_sig_alarm = atomic64_read(&phba->cgn_acqe_stat.alarm); + hs->link_failure_count -= lso->link_failure_count; hs->loss_of_sync_count -= lso->loss_of_sync_count; hs->loss_of_signal_count -= lso->loss_of_signal_count; @@ -7026,6 +7042,12 @@ lpfc_reset_stats(struct Scsi_Host *shost) else lso->link_events = (phba->fc_eventTag >> 1); + atomic64_set(&phba->cgn_acqe_stat.warn, 0); + atomic64_set(&phba->cgn_acqe_stat.alarm, 0); + + memset(&shost_to_fc_host(shost)->fpin_stats, 0, + sizeof(shost_to_fc_host(shost)->fpin_stats)); + psli->stats_start = ktime_get_seconds(); mempool_free(pmboxq, phba->mbox_mem_pool); @@ -7459,6 +7481,11 @@ lpfc_get_cfgparam(struct lpfc_hba *phba) lpfc_enable_dpp_init(phba, lpfc_enable_dpp); lpfc_enable_mi_init(phba, lpfc_enable_mi); + phba->cmf_active_mode = LPFC_CFG_OFF; + if (lpfc_fabric_cgn_frequency > EDC_CG_SIGFREQ_CNT_MAX || + lpfc_fabric_cgn_frequency < EDC_CG_SIGFREQ_CNT_MIN) + lpfc_fabric_cgn_frequency = 100; /* 100 ms default */ + if (phba->sli_rev != LPFC_SLI_REV4) { /* NVME only supported on SLI4 */ phba->nvmet_support = 0; |