Add Exchange Diagnostic Capabilities (EDC) ELS definition and
the following capability descriptors:
Link Fault Capability Descriptor
Congestion Signaling Capability Descriptor
Definition taken from FC-LS-5 r5.01
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
---
include/uapi/scsi/fc/fc_els.h | 106 ++++++++++++++++++++++++++++++++++
1 file changed, 106 insertions(+)
diff --git a/include/uapi/scsi/fc/fc_els.h b/include/uapi/scsi/fc/fc_els.h
index 91d4be987220..c9812c5c2fc4 100644
--- a/include/uapi/scsi/fc/fc_els.h
+++ b/include/uapi/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_ */
--
2.26.2
