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2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a 
 kernel/include/uapi/scsi/fc/fc_els.h
....@@ -2,19 +2,6 @@
22 /*
33  * Copyright(c) 2007 Intel Corporation. All rights reserved.
44  *
5
- * This program is free software; you can redistribute it and/or modify it
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- * under the terms and conditions of the GNU General Public License,
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- * version 2, as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12
- * more details.
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- *
14
- * You should have received a copy of the GNU General Public License along with
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- * this program; if not, write to the Free Software Foundation, Inc.,
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- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
17
- *
185  * Maintained at www.Open-FCoE.org
196  */
207 
....@@ -22,6 +9,7 @@
229 #define	_FC_ELS_H_
2310 
2411 #include <linux/types.h>
12
+#include <asm/byteorder.h>
2513 
2614 /*
2715  * Fibre Channel Switch - Enhanced Link Services definitions.
....@@ -52,6 +40,9 @@
5240 	ELS_RRQ =	0x12,	/* reinstate recovery qualifier */
5341 	ELS_REC =	0x13,	/* read exchange concise */
5442 	ELS_SRR =	0x14,	/* sequence retransmission request */
43
+	ELS_FPIN =	0x16,	/* Fabric Performance Impact Notification */
44
+	ELS_RDP =	0x18,	/* Read Diagnostic Parameters */
45
+	ELS_RDF =	0x19,	/* Register Diagnostic Functions */
5546 	ELS_PRLI =	0x20,	/* process login */
5647 	ELS_PRLO =	0x21,	/* process logout */
5748 	ELS_SCN =	0x22,	/* state change notification */
....@@ -119,6 +110,9 @@
119110 	[ELS_RRQ] =	"RRQ",			\
120111 	[ELS_REC] =	"REC",			\
121112 	[ELS_SRR] =	"SRR",			\
113
+	[ELS_FPIN] =	"FPIN",			\
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+	[ELS_RDP] =	"RDP",			\
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+	[ELS_RDF] =	"RDF",			\
122116 	[ELS_PRLI] =	"PRLI",			\
123117 	[ELS_PRLO] =	"PRLO",			\
124118 	[ELS_SCN] =	"SCN",			\
....@@ -217,6 +211,99 @@
217211 	ELS_EXPL_NOT_NEIGHBOR = 0x62,	/* VN2VN_Port not in neighbor set */
218212 	/* TBD - above definitions incomplete */
219213 };
214
+
215
+/*
216
+ * Link Service TLV Descriptor Tag Values
217
+ */
218
+enum fc_ls_tlv_dtag {
219
+	ELS_DTAG_LS_REQ_INFO =		0x00000001,
220
+		/* Link Service Request Information Descriptor */
221
+	ELS_DTAG_LNK_INTEGRITY =	0x00020001,
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+		/* Link Integrity Notification Descriptor */
223
+	ELS_DTAG_DELIVERY =		0x00020002,
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+		/* Delivery Notification Descriptor */
225
+	ELS_DTAG_PEER_CONGEST =		0x00020003,
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+		/* Peer Congestion Notification Descriptor */
227
+	ELS_DTAG_CONGESTION =		0x00020004,
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+		/* Congestion Notification Descriptor */
229
+	ELS_DTAG_FPIN_REGISTER =	0x00030001,
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+		/* FPIN Registration Descriptor */
231
+};
232
+
233
+/*
234
+ * Initializer useful for decoding table.
235
+ * Please keep this in sync with the above definitions.
236
+ */
237
+#define FC_LS_TLV_DTAG_INIT {					      \
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+	{ ELS_DTAG_LS_REQ_INFO,		"Link Service Request Information" }, \
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+	{ ELS_DTAG_LNK_INTEGRITY,	"Link Integrity Notification" },      \
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+	{ ELS_DTAG_DELIVERY,		"Delivery Notification Present" },    \
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+	{ ELS_DTAG_PEER_CONGEST,	"Peer Congestion Notification" },     \
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+	{ ELS_DTAG_CONGESTION,		"Congestion Notification" },	      \
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+	{ ELS_DTAG_FPIN_REGISTER,	"FPIN Registration" },		      \
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+}
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+
246
+
247
+/*
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+ * Generic Link Service TLV Descriptor format
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+ *
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+ * This structure, as it defines no payload, will also be referred to
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+ * as the "tlv header" - which contains the tag and len fields.
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+ */
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+struct fc_tlv_desc {
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+	__be32		desc_tag;	/* Notification Descriptor Tag */
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+	__be32		desc_len;	/* Length of Descriptor (in bytes).
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+					 * Size of descriptor excluding
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+					 * desc_tag and desc_len fields.
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+					 */
259
+	__u8		desc_value[0];  /* Descriptor Value */
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+};
261
+
262
+/* Descriptor tag and len fields are considered the mandatory header
263
+ * for a descriptor
264
+ */
265
+#define FC_TLV_DESC_HDR_SZ	sizeof(struct fc_tlv_desc)
266
+
267
+/*
268
+ * Macro, used when initializing payloads, to return the descriptor length.
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+ * Length is size of descriptor minus the tag and len fields.
270
+ */
271
+#define FC_TLV_DESC_LENGTH_FROM_SZ(desc)	\
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+		(sizeof(desc) - FC_TLV_DESC_HDR_SZ)
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+
274
+/* Macro, used on received payloads, to return the descriptor length */
275
+#define FC_TLV_DESC_SZ_FROM_LENGTH(tlv)		\
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+		(__be32_to_cpu((tlv)->desc_len) + FC_TLV_DESC_HDR_SZ)
277
+
278
+/*
279
+ * This helper is used to walk descriptors in a descriptor list.
280
+ * Given the address of the current descriptor, which minimally contains a
281
+ * tag and len field, calculate the address of the next descriptor based
282
+ * on the len field.
283
+ */
284
+static inline void *fc_tlv_next_desc(void *desc)
285
+{
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+	struct fc_tlv_desc *tlv = desc;
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+
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+	return (desc + FC_TLV_DESC_SZ_FROM_LENGTH(tlv));
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+}
290
+
291
+
292
+/*
293
+ * Link Service Request Information Descriptor
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+ */
295
+struct fc_els_lsri_desc {
296
+	__be32		desc_tag;	/* descriptor tag (0x0000 0001) */
297
+	__be32		desc_len;	/* Length of Descriptor (in bytes) (4).
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+					 * Size of descriptor excluding
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+					 * desc_tag and desc_len fields.
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+					 */
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+	struct {
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+		__u8	cmd;		/* ELS cmd byte */
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+		__u8	bytes[3];	/* bytes 1..3 */
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+	} rqst_w0;			/* Request word 0 */
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+};
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+
220307 
221308 /*
222309  * Common service parameters (N ports).
....@@ -829,4 +916,120 @@
829916 	ELS_CLID_IC_LIP =	8,	/* receiving LIP */
830917 };
831918 
919
+
920
+enum fc_fpin_li_event_types {
921
+	FPIN_LI_UNKNOWN =		0x0,
922
+	FPIN_LI_LINK_FAILURE =		0x1,
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+	FPIN_LI_LOSS_OF_SYNC =		0x2,
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+	FPIN_LI_LOSS_OF_SIG =		0x3,
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+	FPIN_LI_PRIM_SEQ_ERR =		0x4,
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+	FPIN_LI_INVALID_TX_WD =		0x5,
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+	FPIN_LI_INVALID_CRC =		0x6,
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+	FPIN_LI_DEVICE_SPEC =		0xF,
929
+};
930
+
931
+/*
932
+ * Initializer useful for decoding table.
933
+ * Please keep this in sync with the above definitions.
934
+ */
935
+#define FC_FPIN_LI_EVT_TYPES_INIT {					\
936
+	{ FPIN_LI_UNKNOWN,		"Unknown" },			\
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+	{ FPIN_LI_LINK_FAILURE,		"Link Failure" },		\
938
+	{ FPIN_LI_LOSS_OF_SYNC,		"Loss of Synchronization" },	\
939
+	{ FPIN_LI_LOSS_OF_SIG,		"Loss of Signal" },		\
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+	{ FPIN_LI_PRIM_SEQ_ERR,		"Primitive Sequence Protocol Error" }, \
941
+	{ FPIN_LI_INVALID_TX_WD,	"Invalid Transmission Word" },	\
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+	{ FPIN_LI_INVALID_CRC,		"Invalid CRC" },		\
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+	{ FPIN_LI_DEVICE_SPEC,		"Device Specific" },		\
944
+}
945
+
946
+
947
+/*
948
+ * Link Integrity Notification Descriptor
949
+ */
950
+struct fc_fn_li_desc {
951
+	__be32		desc_tag;	/* Descriptor Tag (0x00020001) */
952
+	__be32		desc_len;	/* Length of Descriptor (in bytes).
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+					 * Size of descriptor excluding
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+					 * desc_tag and desc_len fields.
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+					 */
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+	__be64		detecting_wwpn;	/* Port Name that detected event */
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+	__be64		attached_wwpn;	/* Port Name of device attached to
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+					 * detecting Port Name
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+					 */
960
+	__be16		event_type;	/* see enum fc_fpin_li_event_types */
961
+	__be16		event_modifier;	/* Implementation specific value
962
+					 * describing the event type
963
+					 */
964
+	__be32		event_threshold;/* duration in ms of the link
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+					 * integrity detection cycle
966
+					 */
967
+	__be32		event_count;	/* minimum number of event
968
+					 * occurrences during the event
969
+					 * threshold to caause the LI event
970
+					 */
971
+	__be32		pname_count;	/* number of portname_list elements */
972
+	__be64		pname_list[0];	/* list of N_Port_Names accessible
973
+					 * through the attached port
974
+					 */
975
+};
976
+
977
+/*
978
+ * ELS_FPIN - Fabric Performance Impact Notification
979
+ */
980
+struct fc_els_fpin {
981
+	__u8		fpin_cmd;	/* command (0x16) */
982
+	__u8		fpin_zero[3];	/* specified as zero - part of cmd */
983
+	__be32		desc_len;	/* Length of Descriptor List (in bytes).
984
+					 * Size of ELS excluding fpin_cmd,
985
+					 * fpin_zero and desc_len fields.
986
+					 */
987
+	struct fc_tlv_desc	fpin_desc[0];	/* Descriptor list */
988
+};
989
+
990
+/* Diagnostic Function Descriptor - FPIN Registration */
991
+struct fc_df_desc_fpin_reg {
992
+	__be32		desc_tag;	/* FPIN Registration (0x00030001) */
993
+	__be32		desc_len;	/* Length of Descriptor (in bytes).
994
+					 * Size of descriptor excluding
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+					 * desc_tag and desc_len fields.
996
+					 */
997
+	__be32		count;		/* Number of desc_tags elements */
998
+	__be32		desc_tags[0];	/* Array of Descriptor Tags.
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+					 * Each tag indicates a function
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+					 * supported by the N_Port (request)
1001
+					 * or by the  N_Port and Fabric
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+					 * Controller (reply; may be a subset
1003
+					 * of the request).
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+					 * See ELS_FN_DTAG_xxx for tag values.
1005
+					 */
1006
+};
1007
+
1008
+/*
1009
+ * ELS_RDF - Register Diagnostic Functions
1010
+ */
1011
+struct fc_els_rdf {
1012
+	__u8		fpin_cmd;	/* command (0x19) */
1013
+	__u8		fpin_zero[3];	/* specified as zero - part of cmd */
1014
+	__be32		desc_len;	/* Length of Descriptor List (in bytes).
1015
+					 * Size of ELS excluding fpin_cmd,
1016
+					 * fpin_zero and desc_len fields.
1017
+					 */
1018
+	struct fc_tlv_desc	desc[0];	/* Descriptor list */
1019
+};
1020
+
1021
+/*
1022
+ * ELS RDF LS_ACC Response.
1023
+ */
1024
+struct fc_els_rdf_resp {
1025
+	struct fc_els_ls_acc	acc_hdr;
1026
+	__be32			desc_list_len;	/* Length of response (in
1027
+						 * bytes). Excludes acc_hdr
1028
+						 * and desc_list_len fields.
1029
+						 */
1030
+	struct fc_els_lsri_desc	lsri;
1031
+	struct fc_tlv_desc	desc[0];	/* Supported Descriptor list */
1032
+};
1033
+
1034
+
8321035 #endif /* _FC_ELS_H_ */