xref: /openbmc/linux/include/rdma/ib_sa.h (revision 236bdb88)
1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /*
3  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
4  * Copyright (c) 2005 Voltaire, Inc.  All rights reserved.
5  * Copyright (c) 2006 Intel Corporation.  All rights reserved.
6  */
7 
8 #ifndef IB_SA_H
9 #define IB_SA_H
10 
11 #include <linux/completion.h>
12 #include <linux/compiler.h>
13 
14 #include <linux/atomic.h>
15 #include <linux/netdevice.h>
16 
17 #include <rdma/ib_verbs.h>
18 #include <rdma/ib_mad.h>
19 #include <rdma/ib_addr.h>
20 #include <rdma/opa_addr.h>
21 
22 enum {
23 	IB_SA_CLASS_VERSION		= 2,	/* IB spec version 1.1/1.2 */
24 
25 	IB_SA_METHOD_GET_TABLE		= 0x12,
26 	IB_SA_METHOD_GET_TABLE_RESP	= 0x92,
27 	IB_SA_METHOD_DELETE		= 0x15,
28 	IB_SA_METHOD_DELETE_RESP	= 0x95,
29 	IB_SA_METHOD_GET_MULTI		= 0x14,
30 	IB_SA_METHOD_GET_MULTI_RESP	= 0x94,
31 	IB_SA_METHOD_GET_TRACE_TBL	= 0x13
32 };
33 
34 #define OPA_SA_CLASS_VERSION	0x80
35 enum {
36 	IB_SA_ATTR_CLASS_PORTINFO    = 0x01,
37 	IB_SA_ATTR_NOTICE	     = 0x02,
38 	IB_SA_ATTR_INFORM_INFO	     = 0x03,
39 	IB_SA_ATTR_NODE_REC	     = 0x11,
40 	IB_SA_ATTR_PORT_INFO_REC     = 0x12,
41 	IB_SA_ATTR_SL2VL_REC	     = 0x13,
42 	IB_SA_ATTR_SWITCH_REC	     = 0x14,
43 	IB_SA_ATTR_LINEAR_FDB_REC    = 0x15,
44 	IB_SA_ATTR_RANDOM_FDB_REC    = 0x16,
45 	IB_SA_ATTR_MCAST_FDB_REC     = 0x17,
46 	IB_SA_ATTR_SM_INFO_REC	     = 0x18,
47 	IB_SA_ATTR_LINK_REC	     = 0x20,
48 	IB_SA_ATTR_GUID_INFO_REC     = 0x30,
49 	IB_SA_ATTR_SERVICE_REC	     = 0x31,
50 	IB_SA_ATTR_PARTITION_REC     = 0x33,
51 	IB_SA_ATTR_PATH_REC	     = 0x35,
52 	IB_SA_ATTR_VL_ARB_REC	     = 0x36,
53 	IB_SA_ATTR_MC_MEMBER_REC     = 0x38,
54 	IB_SA_ATTR_TRACE_REC	     = 0x39,
55 	IB_SA_ATTR_MULTI_PATH_REC    = 0x3a,
56 	IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
57 	IB_SA_ATTR_INFORM_INFO_REC   = 0xf3
58 };
59 
60 enum ib_sa_selector {
61 	IB_SA_GT   = 0,
62 	IB_SA_LT   = 1,
63 	IB_SA_EQ   = 2,
64 	/*
65 	 * The meaning of "best" depends on the attribute: for
66 	 * example, for MTU best will return the largest available
67 	 * MTU, while for packet life time, best will return the
68 	 * smallest available life time.
69 	 */
70 	IB_SA_BEST = 3
71 };
72 
73 /*
74  * There are 4 types of join states:
75  * FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
76  * The order corresponds to JoinState bits in MCMemberRecord.
77  */
78 enum ib_sa_mc_join_states {
79 	FULLMEMBER_JOIN,
80 	NONMEMBER_JOIN,
81 	SENDONLY_NONMEBER_JOIN,
82 	SENDONLY_FULLMEMBER_JOIN,
83 	NUM_JOIN_MEMBERSHIP_TYPES,
84 };
85 
86 #define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT	BIT(12)
87 
88 /*
89  * Structures for SA records are named "struct ib_sa_xxx_rec."  No
90  * attempt is made to pack structures to match the physical layout of
91  * SA records in SA MADs; all packing and unpacking is handled by the
92  * SA query code.
93  *
94  * For a record with structure ib_sa_xxx_rec, the naming convention
95  * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
96  * never use different abbreviations or otherwise change the spelling
97  * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
98  *
99  * Reserved rows are indicated with comments to help maintainability.
100  */
101 
102 #define IB_SA_PATH_REC_SERVICE_ID		       (IB_SA_COMP_MASK( 0) |\
103 							IB_SA_COMP_MASK( 1))
104 #define IB_SA_PATH_REC_DGID				IB_SA_COMP_MASK( 2)
105 #define IB_SA_PATH_REC_SGID				IB_SA_COMP_MASK( 3)
106 #define IB_SA_PATH_REC_DLID				IB_SA_COMP_MASK( 4)
107 #define IB_SA_PATH_REC_SLID				IB_SA_COMP_MASK( 5)
108 #define IB_SA_PATH_REC_RAW_TRAFFIC			IB_SA_COMP_MASK( 6)
109 /* reserved:								 7 */
110 #define IB_SA_PATH_REC_FLOW_LABEL       		IB_SA_COMP_MASK( 8)
111 #define IB_SA_PATH_REC_HOP_LIMIT			IB_SA_COMP_MASK( 9)
112 #define IB_SA_PATH_REC_TRAFFIC_CLASS			IB_SA_COMP_MASK(10)
113 #define IB_SA_PATH_REC_REVERSIBLE			IB_SA_COMP_MASK(11)
114 #define IB_SA_PATH_REC_NUMB_PATH			IB_SA_COMP_MASK(12)
115 #define IB_SA_PATH_REC_PKEY				IB_SA_COMP_MASK(13)
116 #define IB_SA_PATH_REC_QOS_CLASS			IB_SA_COMP_MASK(14)
117 #define IB_SA_PATH_REC_SL				IB_SA_COMP_MASK(15)
118 #define IB_SA_PATH_REC_MTU_SELECTOR			IB_SA_COMP_MASK(16)
119 #define IB_SA_PATH_REC_MTU				IB_SA_COMP_MASK(17)
120 #define IB_SA_PATH_REC_RATE_SELECTOR			IB_SA_COMP_MASK(18)
121 #define IB_SA_PATH_REC_RATE				IB_SA_COMP_MASK(19)
122 #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR	IB_SA_COMP_MASK(20)
123 #define IB_SA_PATH_REC_PACKET_LIFE_TIME			IB_SA_COMP_MASK(21)
124 #define IB_SA_PATH_REC_PREFERENCE			IB_SA_COMP_MASK(22)
125 
126 enum sa_path_rec_type {
127 	SA_PATH_REC_TYPE_IB,
128 	SA_PATH_REC_TYPE_ROCE_V1,
129 	SA_PATH_REC_TYPE_ROCE_V2,
130 	SA_PATH_REC_TYPE_OPA
131 };
132 
133 struct sa_path_rec_ib {
134 	__be16       dlid;
135 	__be16       slid;
136 	u8           raw_traffic;
137 };
138 
139 /**
140  * struct sa_path_rec_roce - RoCE specific portion of the path record entry
141  * @route_resolved:	When set, it indicates that this route is already
142  *			resolved for this path record entry.
143  * @dmac:		Destination mac address for the given DGID entry
144  *			of the path record entry.
145  */
146 struct sa_path_rec_roce {
147 	bool	route_resolved;
148 	u8	dmac[ETH_ALEN];
149 };
150 
151 struct sa_path_rec_opa {
152 	__be32       dlid;
153 	__be32       slid;
154 	u8           raw_traffic;
155 	u8	     l2_8B;
156 	u8	     l2_10B;
157 	u8	     l2_9B;
158 	u8	     l2_16B;
159 	u8	     qos_type;
160 	u8	     qos_priority;
161 };
162 
163 struct sa_path_rec {
164 	union ib_gid dgid;
165 	union ib_gid sgid;
166 	__be64       service_id;
167 	/* reserved */
168 	__be32       flow_label;
169 	u8           hop_limit;
170 	u8           traffic_class;
171 	u8           reversible;
172 	u8           numb_path;
173 	__be16       pkey;
174 	__be16       qos_class;
175 	u8           sl;
176 	u8           mtu_selector;
177 	u8           mtu;
178 	u8           rate_selector;
179 	u8           rate;
180 	u8           packet_life_time_selector;
181 	u8           packet_life_time;
182 	u8           preference;
183 	union {
184 		struct sa_path_rec_ib ib;
185 		struct sa_path_rec_roce roce;
186 		struct sa_path_rec_opa opa;
187 	};
188 	enum sa_path_rec_type rec_type;
189 	u32 flags;
190 };
191 
192 static inline enum ib_gid_type
193 		sa_conv_pathrec_to_gid_type(struct sa_path_rec *rec)
194 {
195 	switch (rec->rec_type) {
196 	case SA_PATH_REC_TYPE_ROCE_V1:
197 		return IB_GID_TYPE_ROCE;
198 	case SA_PATH_REC_TYPE_ROCE_V2:
199 		return IB_GID_TYPE_ROCE_UDP_ENCAP;
200 	default:
201 		return IB_GID_TYPE_IB;
202 	}
203 }
204 
205 static inline enum sa_path_rec_type
206 		sa_conv_gid_to_pathrec_type(enum ib_gid_type type)
207 {
208 	switch (type) {
209 	case IB_GID_TYPE_ROCE:
210 		return SA_PATH_REC_TYPE_ROCE_V1;
211 	case IB_GID_TYPE_ROCE_UDP_ENCAP:
212 		return SA_PATH_REC_TYPE_ROCE_V2;
213 	default:
214 		return SA_PATH_REC_TYPE_IB;
215 	}
216 }
217 
218 static inline void path_conv_opa_to_ib(struct sa_path_rec *ib,
219 				       struct sa_path_rec *opa)
220 {
221 	if ((be32_to_cpu(opa->opa.dlid) >=
222 	     be16_to_cpu(IB_MULTICAST_LID_BASE)) ||
223 	    (be32_to_cpu(opa->opa.slid) >=
224 	     be16_to_cpu(IB_MULTICAST_LID_BASE))) {
225 		/* Create OPA GID and zero out the LID */
226 		ib->dgid.global.interface_id
227 				= OPA_MAKE_ID(be32_to_cpu(opa->opa.dlid));
228 		ib->dgid.global.subnet_prefix
229 				= opa->dgid.global.subnet_prefix;
230 		ib->sgid.global.interface_id
231 				= OPA_MAKE_ID(be32_to_cpu(opa->opa.slid));
232 		ib->dgid.global.subnet_prefix
233 				= opa->dgid.global.subnet_prefix;
234 		ib->ib.dlid	= 0;
235 
236 		ib->ib.slid	= 0;
237 	} else {
238 		ib->ib.dlid	= htons(ntohl(opa->opa.dlid));
239 		ib->ib.slid	= htons(ntohl(opa->opa.slid));
240 	}
241 	ib->service_id		= opa->service_id;
242 	ib->ib.raw_traffic	= opa->opa.raw_traffic;
243 }
244 
245 static inline void path_conv_ib_to_opa(struct sa_path_rec *opa,
246 				       struct sa_path_rec *ib)
247 {
248 	__be32 slid, dlid;
249 
250 	if ((ib_is_opa_gid(&ib->sgid)) ||
251 	    (ib_is_opa_gid(&ib->dgid))) {
252 		slid = htonl(opa_get_lid_from_gid(&ib->sgid));
253 		dlid = htonl(opa_get_lid_from_gid(&ib->dgid));
254 	} else {
255 		slid = htonl(ntohs(ib->ib.slid));
256 		dlid = htonl(ntohs(ib->ib.dlid));
257 	}
258 	opa->opa.slid		= slid;
259 	opa->opa.dlid		= dlid;
260 	opa->service_id		= ib->service_id;
261 	opa->opa.raw_traffic	= ib->ib.raw_traffic;
262 }
263 
264 /* Convert from OPA to IB path record */
265 static inline void sa_convert_path_opa_to_ib(struct sa_path_rec *dest,
266 					     struct sa_path_rec *src)
267 {
268 	if (src->rec_type != SA_PATH_REC_TYPE_OPA)
269 		return;
270 
271 	*dest = *src;
272 	dest->rec_type = SA_PATH_REC_TYPE_IB;
273 	path_conv_opa_to_ib(dest, src);
274 }
275 
276 /* Convert from IB to OPA path record */
277 static inline void sa_convert_path_ib_to_opa(struct sa_path_rec *dest,
278 					     struct sa_path_rec *src)
279 {
280 	if (src->rec_type != SA_PATH_REC_TYPE_IB)
281 		return;
282 
283 	/* Do a structure copy and overwrite the relevant fields */
284 	*dest = *src;
285 	dest->rec_type = SA_PATH_REC_TYPE_OPA;
286 	path_conv_ib_to_opa(dest, src);
287 }
288 
289 #define IB_SA_MCMEMBER_REC_MGID				IB_SA_COMP_MASK( 0)
290 #define IB_SA_MCMEMBER_REC_PORT_GID			IB_SA_COMP_MASK( 1)
291 #define IB_SA_MCMEMBER_REC_QKEY				IB_SA_COMP_MASK( 2)
292 #define IB_SA_MCMEMBER_REC_MLID				IB_SA_COMP_MASK( 3)
293 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR			IB_SA_COMP_MASK( 4)
294 #define IB_SA_MCMEMBER_REC_MTU				IB_SA_COMP_MASK( 5)
295 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS		IB_SA_COMP_MASK( 6)
296 #define IB_SA_MCMEMBER_REC_PKEY				IB_SA_COMP_MASK( 7)
297 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR		IB_SA_COMP_MASK( 8)
298 #define IB_SA_MCMEMBER_REC_RATE				IB_SA_COMP_MASK( 9)
299 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR	IB_SA_COMP_MASK(10)
300 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME		IB_SA_COMP_MASK(11)
301 #define IB_SA_MCMEMBER_REC_SL				IB_SA_COMP_MASK(12)
302 #define IB_SA_MCMEMBER_REC_FLOW_LABEL			IB_SA_COMP_MASK(13)
303 #define IB_SA_MCMEMBER_REC_HOP_LIMIT			IB_SA_COMP_MASK(14)
304 #define IB_SA_MCMEMBER_REC_SCOPE			IB_SA_COMP_MASK(15)
305 #define IB_SA_MCMEMBER_REC_JOIN_STATE			IB_SA_COMP_MASK(16)
306 #define IB_SA_MCMEMBER_REC_PROXY_JOIN			IB_SA_COMP_MASK(17)
307 
308 struct ib_sa_mcmember_rec {
309 	union ib_gid mgid;
310 	union ib_gid port_gid;
311 	__be32       qkey;
312 	__be16       mlid;
313 	u8           mtu_selector;
314 	u8           mtu;
315 	u8           traffic_class;
316 	__be16       pkey;
317 	u8 	     rate_selector;
318 	u8 	     rate;
319 	u8 	     packet_life_time_selector;
320 	u8 	     packet_life_time;
321 	u8           sl;
322 	__be32       flow_label;
323 	u8           hop_limit;
324 	u8           scope;
325 	u8           join_state;
326 	u8           proxy_join;
327 };
328 
329 /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1	*/
330 #define IB_SA_SERVICE_REC_SERVICE_ID			IB_SA_COMP_MASK( 0)
331 #define IB_SA_SERVICE_REC_SERVICE_GID			IB_SA_COMP_MASK( 1)
332 #define IB_SA_SERVICE_REC_SERVICE_PKEY			IB_SA_COMP_MASK( 2)
333 /* reserved:								 3 */
334 #define IB_SA_SERVICE_REC_SERVICE_LEASE			IB_SA_COMP_MASK( 4)
335 #define IB_SA_SERVICE_REC_SERVICE_KEY			IB_SA_COMP_MASK( 5)
336 #define IB_SA_SERVICE_REC_SERVICE_NAME			IB_SA_COMP_MASK( 6)
337 #define IB_SA_SERVICE_REC_SERVICE_DATA8_0		IB_SA_COMP_MASK( 7)
338 #define IB_SA_SERVICE_REC_SERVICE_DATA8_1		IB_SA_COMP_MASK( 8)
339 #define IB_SA_SERVICE_REC_SERVICE_DATA8_2		IB_SA_COMP_MASK( 9)
340 #define IB_SA_SERVICE_REC_SERVICE_DATA8_3		IB_SA_COMP_MASK(10)
341 #define IB_SA_SERVICE_REC_SERVICE_DATA8_4		IB_SA_COMP_MASK(11)
342 #define IB_SA_SERVICE_REC_SERVICE_DATA8_5		IB_SA_COMP_MASK(12)
343 #define IB_SA_SERVICE_REC_SERVICE_DATA8_6		IB_SA_COMP_MASK(13)
344 #define IB_SA_SERVICE_REC_SERVICE_DATA8_7		IB_SA_COMP_MASK(14)
345 #define IB_SA_SERVICE_REC_SERVICE_DATA8_8		IB_SA_COMP_MASK(15)
346 #define IB_SA_SERVICE_REC_SERVICE_DATA8_9		IB_SA_COMP_MASK(16)
347 #define IB_SA_SERVICE_REC_SERVICE_DATA8_10		IB_SA_COMP_MASK(17)
348 #define IB_SA_SERVICE_REC_SERVICE_DATA8_11		IB_SA_COMP_MASK(18)
349 #define IB_SA_SERVICE_REC_SERVICE_DATA8_12		IB_SA_COMP_MASK(19)
350 #define IB_SA_SERVICE_REC_SERVICE_DATA8_13		IB_SA_COMP_MASK(20)
351 #define IB_SA_SERVICE_REC_SERVICE_DATA8_14		IB_SA_COMP_MASK(21)
352 #define IB_SA_SERVICE_REC_SERVICE_DATA8_15		IB_SA_COMP_MASK(22)
353 #define IB_SA_SERVICE_REC_SERVICE_DATA16_0		IB_SA_COMP_MASK(23)
354 #define IB_SA_SERVICE_REC_SERVICE_DATA16_1		IB_SA_COMP_MASK(24)
355 #define IB_SA_SERVICE_REC_SERVICE_DATA16_2		IB_SA_COMP_MASK(25)
356 #define IB_SA_SERVICE_REC_SERVICE_DATA16_3		IB_SA_COMP_MASK(26)
357 #define IB_SA_SERVICE_REC_SERVICE_DATA16_4		IB_SA_COMP_MASK(27)
358 #define IB_SA_SERVICE_REC_SERVICE_DATA16_5		IB_SA_COMP_MASK(28)
359 #define IB_SA_SERVICE_REC_SERVICE_DATA16_6		IB_SA_COMP_MASK(29)
360 #define IB_SA_SERVICE_REC_SERVICE_DATA16_7		IB_SA_COMP_MASK(30)
361 #define IB_SA_SERVICE_REC_SERVICE_DATA32_0		IB_SA_COMP_MASK(31)
362 #define IB_SA_SERVICE_REC_SERVICE_DATA32_1		IB_SA_COMP_MASK(32)
363 #define IB_SA_SERVICE_REC_SERVICE_DATA32_2		IB_SA_COMP_MASK(33)
364 #define IB_SA_SERVICE_REC_SERVICE_DATA32_3		IB_SA_COMP_MASK(34)
365 #define IB_SA_SERVICE_REC_SERVICE_DATA64_0		IB_SA_COMP_MASK(35)
366 #define IB_SA_SERVICE_REC_SERVICE_DATA64_1		IB_SA_COMP_MASK(36)
367 
368 #define IB_DEFAULT_SERVICE_LEASE 	0xFFFFFFFF
369 
370 #define IB_SA_GUIDINFO_REC_LID		IB_SA_COMP_MASK(0)
371 #define IB_SA_GUIDINFO_REC_BLOCK_NUM	IB_SA_COMP_MASK(1)
372 #define IB_SA_GUIDINFO_REC_RES1		IB_SA_COMP_MASK(2)
373 #define IB_SA_GUIDINFO_REC_RES2		IB_SA_COMP_MASK(3)
374 #define IB_SA_GUIDINFO_REC_GID0		IB_SA_COMP_MASK(4)
375 #define IB_SA_GUIDINFO_REC_GID1		IB_SA_COMP_MASK(5)
376 #define IB_SA_GUIDINFO_REC_GID2		IB_SA_COMP_MASK(6)
377 #define IB_SA_GUIDINFO_REC_GID3		IB_SA_COMP_MASK(7)
378 #define IB_SA_GUIDINFO_REC_GID4		IB_SA_COMP_MASK(8)
379 #define IB_SA_GUIDINFO_REC_GID5		IB_SA_COMP_MASK(9)
380 #define IB_SA_GUIDINFO_REC_GID6		IB_SA_COMP_MASK(10)
381 #define IB_SA_GUIDINFO_REC_GID7		IB_SA_COMP_MASK(11)
382 
383 struct ib_sa_guidinfo_rec {
384 	__be16	lid;
385 	u8	block_num;
386 	/* reserved */
387 	u8	res1;
388 	__be32	res2;
389 	u8	guid_info_list[64];
390 };
391 
392 struct ib_sa_client {
393 	atomic_t users;
394 	struct completion comp;
395 };
396 
397 /**
398  * ib_sa_register_client - Register an SA client.
399  */
400 void ib_sa_register_client(struct ib_sa_client *client);
401 
402 /**
403  * ib_sa_unregister_client - Deregister an SA client.
404  * @client: Client object to deregister.
405  */
406 void ib_sa_unregister_client(struct ib_sa_client *client);
407 
408 struct ib_sa_query;
409 
410 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
411 
412 int ib_sa_path_rec_get(struct ib_sa_client *client, struct ib_device *device,
413 		       u32 port_num, struct sa_path_rec *rec,
414 		       ib_sa_comp_mask comp_mask, unsigned long timeout_ms,
415 		       gfp_t gfp_mask,
416 		       void (*callback)(int status, struct sa_path_rec *resp,
417 					unsigned int num_prs, void *context),
418 		       void *context, struct ib_sa_query **query);
419 
420 struct ib_sa_multicast {
421 	struct ib_sa_mcmember_rec rec;
422 	ib_sa_comp_mask		comp_mask;
423 	int			(*callback)(int status,
424 					    struct ib_sa_multicast *multicast);
425 	void			*context;
426 };
427 
428 /**
429  * ib_sa_join_multicast - Initiates a join request to the specified multicast
430  *   group.
431  * @client: SA client
432  * @device: Device associated with the multicast group.
433  * @port_num: Port on the specified device to associate with the multicast
434  *   group.
435  * @rec: SA multicast member record specifying group attributes.
436  * @comp_mask: Component mask indicating which group attributes of %rec are
437  *   valid.
438  * @gfp_mask: GFP mask for memory allocations.
439  * @callback: User callback invoked once the join operation completes.
440  * @context: User specified context stored with the ib_sa_multicast structure.
441  *
442  * This call initiates a multicast join request with the SA for the specified
443  * multicast group.  If the join operation is started successfully, it returns
444  * an ib_sa_multicast structure that is used to track the multicast operation.
445  * Users must free this structure by calling ib_free_multicast, even if the
446  * join operation later fails.  (The callback status is non-zero.)
447  *
448  * If the join operation fails; status will be non-zero, with the following
449  * failures possible:
450  * -ETIMEDOUT: The request timed out.
451  * -EIO: An error occurred sending the query.
452  * -EINVAL: The MCMemberRecord values differed from the existing group's.
453  * -ENETRESET: Indicates that an fatal error has occurred on the multicast
454  *   group, and the user must rejoin the group to continue using it.
455  */
456 struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
457 					     struct ib_device *device,
458 					     u32 port_num,
459 					     struct ib_sa_mcmember_rec *rec,
460 					     ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
461 					     int (*callback)(int status,
462 							     struct ib_sa_multicast
463 								    *multicast),
464 					     void *context);
465 
466 /**
467  * ib_free_multicast - Frees the multicast tracking structure, and releases
468  *    any reference on the multicast group.
469  * @multicast: Multicast tracking structure allocated by ib_join_multicast.
470  *
471  * This call blocks until the multicast identifier is destroyed.  It may
472  * not be called from within the multicast callback; however, returning a non-
473  * zero value from the callback will result in destroying the multicast
474  * tracking structure.
475  */
476 void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
477 
478 /**
479  * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
480  *   returns it if found.
481  * @device: Device associated with the multicast group.
482  * @port_num: Port on the specified device to associate with the multicast
483  *   group.
484  * @mgid: MGID of multicast group.
485  * @rec: Location to copy SA multicast member record.
486  */
487 int ib_sa_get_mcmember_rec(struct ib_device *device, u32 port_num,
488 			   union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
489 
490 /**
491  * ib_init_ah_from_mcmember - Initialize address handle attributes based on
492  * an SA multicast member record.
493  */
494 int ib_init_ah_from_mcmember(struct ib_device *device, u32 port_num,
495 			     struct ib_sa_mcmember_rec *rec,
496 			     struct net_device *ndev,
497 			     enum ib_gid_type gid_type,
498 			     struct rdma_ah_attr *ah_attr);
499 
500 int ib_init_ah_attr_from_path(struct ib_device *device, u32 port_num,
501 			      struct sa_path_rec *rec,
502 			      struct rdma_ah_attr *ah_attr,
503 			      const struct ib_gid_attr *sgid_attr);
504 
505 /**
506  * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
507  * to IB MAD wire format.
508  */
509 void ib_sa_pack_path(struct sa_path_rec *rec, void *attribute);
510 
511 /**
512  * ib_sa_unpack_path - Convert a path record from MAD format to struct
513  * ib_sa_path_rec.
514  */
515 void ib_sa_unpack_path(void *attribute, struct sa_path_rec *rec);
516 
517 /* Support GuidInfoRecord */
518 int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
519 			      struct ib_device *device, u32 port_num,
520 			      struct ib_sa_guidinfo_rec *rec,
521 			      ib_sa_comp_mask comp_mask, u8 method,
522 			      unsigned long timeout_ms, gfp_t gfp_mask,
523 			      void (*callback)(int status,
524 					       struct ib_sa_guidinfo_rec *resp,
525 					       void *context),
526 			      void *context, struct ib_sa_query **sa_query);
527 
528 static inline bool sa_path_is_roce(struct sa_path_rec *rec)
529 {
530 	return ((rec->rec_type == SA_PATH_REC_TYPE_ROCE_V1) ||
531 		(rec->rec_type == SA_PATH_REC_TYPE_ROCE_V2));
532 }
533 
534 static inline bool sa_path_is_opa(struct sa_path_rec *rec)
535 {
536 	return (rec->rec_type == SA_PATH_REC_TYPE_OPA);
537 }
538 
539 static inline void sa_path_set_slid(struct sa_path_rec *rec, u32 slid)
540 {
541 	if (rec->rec_type == SA_PATH_REC_TYPE_IB)
542 		rec->ib.slid = cpu_to_be16(slid);
543 	else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
544 		rec->opa.slid = cpu_to_be32(slid);
545 }
546 
547 static inline void sa_path_set_dlid(struct sa_path_rec *rec, u32 dlid)
548 {
549 	if (rec->rec_type == SA_PATH_REC_TYPE_IB)
550 		rec->ib.dlid = cpu_to_be16(dlid);
551 	else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
552 		rec->opa.dlid = cpu_to_be32(dlid);
553 }
554 
555 static inline void sa_path_set_raw_traffic(struct sa_path_rec *rec,
556 					   u8 raw_traffic)
557 {
558 	if (rec->rec_type == SA_PATH_REC_TYPE_IB)
559 		rec->ib.raw_traffic = raw_traffic;
560 	else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
561 		rec->opa.raw_traffic = raw_traffic;
562 }
563 
564 static inline __be32 sa_path_get_slid(struct sa_path_rec *rec)
565 {
566 	if (rec->rec_type == SA_PATH_REC_TYPE_IB)
567 		return htonl(ntohs(rec->ib.slid));
568 	else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
569 		return rec->opa.slid;
570 	return 0;
571 }
572 
573 static inline __be32 sa_path_get_dlid(struct sa_path_rec *rec)
574 {
575 	if (rec->rec_type == SA_PATH_REC_TYPE_IB)
576 		return htonl(ntohs(rec->ib.dlid));
577 	else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
578 		return rec->opa.dlid;
579 	return 0;
580 }
581 
582 static inline u8 sa_path_get_raw_traffic(struct sa_path_rec *rec)
583 {
584 	if (rec->rec_type == SA_PATH_REC_TYPE_IB)
585 		return rec->ib.raw_traffic;
586 	else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
587 		return rec->opa.raw_traffic;
588 	return 0;
589 }
590 
591 static inline void sa_path_set_dmac(struct sa_path_rec *rec, u8 *dmac)
592 {
593 	if (sa_path_is_roce(rec))
594 		memcpy(rec->roce.dmac, dmac, ETH_ALEN);
595 }
596 
597 static inline void sa_path_set_dmac_zero(struct sa_path_rec *rec)
598 {
599 	if (sa_path_is_roce(rec))
600 		eth_zero_addr(rec->roce.dmac);
601 }
602 
603 static inline u8 *sa_path_get_dmac(struct sa_path_rec *rec)
604 {
605 	if (sa_path_is_roce(rec))
606 		return rec->roce.dmac;
607 	return NULL;
608 }
609 #endif /* IB_SA_H */
610