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| 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.h | |
| parent | 428569e66fa7ef4a41fbea9fa80f559914a74667 (diff) | |
| download | lwn-9064aeb2df8e8185f649afa4600edcd8f6a9f6fd.tar.gz lwn-9064aeb2df8e8185f649afa4600edcd8f6a9f6fd.zip | |
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.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index dd3ddfa5f761..f23905b89ee3 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -403,6 +403,11 @@ struct lpfc_trunk_link { link3; }; +struct lpfc_cgn_acqe_stat { + atomic64_t alarm; + atomic64_t warn; +}; + struct lpfc_vport { struct lpfc_hba *phba; struct list_head listentry; @@ -1343,6 +1348,36 @@ struct lpfc_hba { uint64_t ktime_seg10_min; uint64_t ktime_seg10_max; #endif + /* CMF objects */ + u32 cmf_active_mode; +#define LPFC_CFG_OFF 0 + + /* Signal / FPIN handling for Congestion Mgmt */ + u8 cgn_reg_fpin; /* Negotiated value from RDF */ + u8 cgn_init_reg_fpin; /* Initial value from READ_CONFIG */ +#define LPFC_CGN_FPIN_NONE 0x0 +#define LPFC_CGN_FPIN_WARN 0x1 +#define LPFC_CGN_FPIN_ALARM 0x2 +#define LPFC_CGN_FPIN_BOTH (LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM) + + u8 cgn_reg_signal; /* Negotiated value from EDC */ + u8 cgn_init_reg_signal; /* Initial value from READ_CONFIG */ + /* cgn_reg_signal and cgn_init_reg_signal use + * enum fc_edc_cg_signal_cap_types + */ + u16 cgn_fpin_frequency; +#define LPFC_FPIN_INIT_FREQ 0xffff + u32 cgn_sig_freq; + u32 cgn_acqe_cnt; + + /* Statistics counter for ACQE cgn alarms and warnings */ + struct lpfc_cgn_acqe_stat cgn_acqe_stat; + + /* Congestion buffer information */ + atomic_t cgn_fabric_warn_cnt; /* Total warning cgn events for info */ + atomic_t cgn_fabric_alarm_cnt; /* Total alarm cgn events for info */ + atomic_t cgn_sync_warn_cnt; /* Total warning events for SYNC wqe */ + atomic_t cgn_sync_alarm_cnt; /* Total alarm events for SYNC wqe */ struct hlist_node cpuhp; /* used for cpuhp per hba callback */ struct timer_list cpuhp_poll_timer; |