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linux-glibc-devel.29113
scsi-fc-Add-EDC-ELS-definition.patch
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File scsi-fc-Add-EDC-ELS-definition.patch of Package linux-glibc-devel.29113
From: James Smart <jsmart2021@gmail.com> Date: Mon, 16 Aug 2021 09:28:46 -0700 Subject: scsi: fc: Add EDC ELS definition Patch-mainline: v5.15-rc1 Git-commit: 54404d357284d1405d98c424951357d970f41168 References: bsc#1190576 Add Exchange Diagnostic Capabilities (EDC) ELS definition and the following capability descriptors: - Link Fault Capability Descriptor - Congestion Signaling Capability Descriptor Definitions taken from FC-LS-5 r5.01 Link: https://lore.kernel.org/r/20210816162901.121235-2-jsmart2021@gmail.com Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Daniel Wagner <dwagner@suse.de> --- include/uapi/scsi/fc/fc_els.h | 106 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) --- a/include/scsi/fc/fc_els.h +++ b/include/scsi/fc/fc_els.h @@ -41,6 +41,7 @@ enum fc_els_cmd { ELS_REC = 0x13, /* read exchange concise */ ELS_SRR = 0x14, /* sequence retransmission request */ ELS_FPIN = 0x16, /* Fabric Performance Impact Notification */ + ELS_EDC = 0x17, /* Exchange Diagnostic Capabilities */ ELS_RDP = 0x18, /* Read Diagnostic Parameters */ ELS_RDF = 0x19, /* Register Diagnostic Functions */ ELS_PRLI = 0x20, /* process login */ @@ -111,6 +112,7 @@ enum fc_els_cmd { [ELS_REC] = "REC", \ [ELS_SRR] = "SRR", \ [ELS_FPIN] = "FPIN", \ + [ELS_EDC] = "EDC", \ [ELS_RDP] = "RDP", \ [ELS_RDF] = "RDF", \ [ELS_PRLI] = "PRLI", \ @@ -218,6 +220,10 @@ enum fc_els_rjt_explan { enum fc_ls_tlv_dtag { ELS_DTAG_LS_REQ_INFO = 0x00000001, /* Link Service Request Information Descriptor */ + ELS_DTAG_LNK_FAULT_CAP = 0x0001000D, + /* Link Fault Capability Descriptor */ + ELS_DTAG_CG_SIGNAL_CAP = 0x0001000F, + /* Congestion Signaling Capability Descriptor */ ELS_DTAG_LNK_INTEGRITY = 0x00020001, /* Link Integrity Notification Descriptor */ ELS_DTAG_DELIVERY = 0x00020002, @@ -236,6 +242,8 @@ enum fc_ls_tlv_dtag { */ #define FC_LS_TLV_DTAG_INIT { \ { ELS_DTAG_LS_REQ_INFO, "Link Service Request Information" }, \ + { ELS_DTAG_LNK_FAULT_CAP, "Link Fault Capability" }, \ + { ELS_DTAG_CG_SIGNAL_CAP, "Congestion Signaling Capability" }, \ { ELS_DTAG_LNK_INTEGRITY, "Link Integrity Notification" }, \ { ELS_DTAG_DELIVERY, "Delivery Notification Present" }, \ { ELS_DTAG_PEER_CONGEST, "Peer Congestion Notification" }, \ @@ -1144,4 +1152,102 @@ struct fc_els_rdf_resp { }; +/* + * Diagnostic Capability Descriptors for EDC ELS + */ + +/* + * Diagnostic: Link Fault Capability Descriptor + */ +struct fc_diag_lnkflt_desc { + __be32 desc_tag; /* Descriptor Tag (0x0001000D) */ + __be32 desc_len; /* Length of Descriptor (in bytes). + * Size of descriptor excluding + * desc_tag and desc_len fields. + * 12 bytes + */ + __be32 degrade_activate_threshold; + __be32 degrade_deactivate_threshold; + __be32 fec_degrade_interval; +}; + +enum fc_edc_cg_signal_cap_types { + /* Note: Capability: bits 31:4 Rsvd; bits 3:0 are capabilities */ + EDC_CG_SIG_NOTSUPPORTED = 0x00, /* neither supported */ + EDC_CG_SIG_WARN_ONLY = 0x01, + EDC_CG_SIG_WARN_ALARM = 0x02, /* both supported */ +}; + +/* + * Initializer useful for decoding table. + * Please keep this in sync with the above definitions. + */ +#define FC_EDC_CG_SIGNAL_CAP_TYPES_INIT { \ + { EDC_CG_SIG_NOTSUPPORTED, "Signaling Not Supported" }, \ + { EDC_CG_SIG_WARN_ONLY, "Warning Signal" }, \ + { EDC_CG_SIG_WARN_ALARM, "Warning and Alarm Signals" }, \ +} + +enum fc_diag_cg_sig_freq_types { + EDC_CG_SIGFREQ_CNT_MIN = 1, /* Min Frequency Count */ + EDC_CG_SIGFREQ_CNT_MAX = 999, /* Max Frequency Count */ + + EDC_CG_SIGFREQ_SEC = 0x1, /* Units: seconds */ + EDC_CG_SIGFREQ_MSEC = 0x2, /* Units: milliseconds */ +}; + +struct fc_diag_cg_sig_freq { + __be16 count; /* Time between signals + * note: upper 6 bits rsvd + */ + __be16 units; /* Time unit for count + * note: upper 12 bits rsvd + */ +}; + +/* + * Diagnostic: Congestion Signaling Capability Descriptor + */ +struct fc_diag_cg_sig_desc { + __be32 desc_tag; /* Descriptor Tag (0x0001000F) */ + __be32 desc_len; /* Length of Descriptor (in bytes). + * Size of descriptor excluding + * desc_tag and desc_len fields. + * 16 bytes + */ + __be32 xmt_signal_capability; + struct fc_diag_cg_sig_freq xmt_signal_frequency; + __be32 rcv_signal_capability; + struct fc_diag_cg_sig_freq rcv_signal_frequency; +}; + +/* + * ELS_EDC - Exchange Diagnostic Capabilities + */ +struct fc_els_edc { + __u8 edc_cmd; /* command (0x17) */ + __u8 edc_zero[3]; /* specified as zero - part of cmd */ + __be32 desc_len; /* Length of Descriptor List (in bytes). + * Size of ELS excluding edc_cmd, + * edc_zero and desc_len fields. + */ + struct fc_tlv_desc desc[0]; + /* Diagnostic Descriptor list */ +}; + +/* + * ELS EDC LS_ACC Response. + */ +struct fc_els_edc_resp { + struct fc_els_ls_acc acc_hdr; + __be32 desc_list_len; /* Length of response (in + * bytes). Excludes acc_hdr + * and desc_list_len fields. + */ + struct fc_els_lsri_desc lsri; + struct fc_tlv_desc desc[0]; + /* Supported Diagnostic Descriptor list */ +}; + + #endif /* _FC_ELS_H_ */
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