powerpc/64: Call setup_barrier_nospec() from setup_arch()
[linux-2.6-microblaze.git] / include / rdma / ib_sa.h
1 /*
2  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
3  * Copyright (c) 2005 Voltaire, Inc.  All rights reserved.
4  * Copyright (c) 2006 Intel Corporation.  All rights reserved.
5  *
6  * This software is available to you under a choice of one of two
7  * licenses.  You may choose to be licensed under the terms of the GNU
8  * General Public License (GPL) Version 2, available from the file
9  * COPYING in the main directory of this source tree, or the
10  * OpenIB.org BSD license below:
11  *
12  *     Redistribution and use in source and binary forms, with or
13  *     without modification, are permitted provided that the following
14  *     conditions are met:
15  *
16  *      - Redistributions of source code must retain the above
17  *        copyright notice, this list of conditions and the following
18  *        disclaimer.
19  *
20  *      - Redistributions in binary form must reproduce the above
21  *        copyright notice, this list of conditions and the following
22  *        disclaimer in the documentation and/or other materials
23  *        provided with the distribution.
24  *
25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32  * SOFTWARE.
33  */
34
35 #ifndef IB_SA_H
36 #define IB_SA_H
37
38 #include <linux/completion.h>
39 #include <linux/compiler.h>
40
41 #include <linux/atomic.h>
42 #include <linux/netdevice.h>
43
44 #include <rdma/ib_verbs.h>
45 #include <rdma/ib_mad.h>
46 #include <rdma/ib_addr.h>
47 #include <rdma/opa_addr.h>
48
49 enum {
50         IB_SA_CLASS_VERSION             = 2,    /* IB spec version 1.1/1.2 */
51
52         IB_SA_METHOD_GET_TABLE          = 0x12,
53         IB_SA_METHOD_GET_TABLE_RESP     = 0x92,
54         IB_SA_METHOD_DELETE             = 0x15,
55         IB_SA_METHOD_DELETE_RESP        = 0x95,
56         IB_SA_METHOD_GET_MULTI          = 0x14,
57         IB_SA_METHOD_GET_MULTI_RESP     = 0x94,
58         IB_SA_METHOD_GET_TRACE_TBL      = 0x13
59 };
60
61 #define OPA_SA_CLASS_VERSION    0x80
62 enum {
63         IB_SA_ATTR_CLASS_PORTINFO    = 0x01,
64         IB_SA_ATTR_NOTICE            = 0x02,
65         IB_SA_ATTR_INFORM_INFO       = 0x03,
66         IB_SA_ATTR_NODE_REC          = 0x11,
67         IB_SA_ATTR_PORT_INFO_REC     = 0x12,
68         IB_SA_ATTR_SL2VL_REC         = 0x13,
69         IB_SA_ATTR_SWITCH_REC        = 0x14,
70         IB_SA_ATTR_LINEAR_FDB_REC    = 0x15,
71         IB_SA_ATTR_RANDOM_FDB_REC    = 0x16,
72         IB_SA_ATTR_MCAST_FDB_REC     = 0x17,
73         IB_SA_ATTR_SM_INFO_REC       = 0x18,
74         IB_SA_ATTR_LINK_REC          = 0x20,
75         IB_SA_ATTR_GUID_INFO_REC     = 0x30,
76         IB_SA_ATTR_SERVICE_REC       = 0x31,
77         IB_SA_ATTR_PARTITION_REC     = 0x33,
78         IB_SA_ATTR_PATH_REC          = 0x35,
79         IB_SA_ATTR_VL_ARB_REC        = 0x36,
80         IB_SA_ATTR_MC_MEMBER_REC     = 0x38,
81         IB_SA_ATTR_TRACE_REC         = 0x39,
82         IB_SA_ATTR_MULTI_PATH_REC    = 0x3a,
83         IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
84         IB_SA_ATTR_INFORM_INFO_REC   = 0xf3
85 };
86
87 enum ib_sa_selector {
88         IB_SA_GT   = 0,
89         IB_SA_LT   = 1,
90         IB_SA_EQ   = 2,
91         /*
92          * The meaning of "best" depends on the attribute: for
93          * example, for MTU best will return the largest available
94          * MTU, while for packet life time, best will return the
95          * smallest available life time.
96          */
97         IB_SA_BEST = 3
98 };
99
100 /*
101  * There are 4 types of join states:
102  * FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
103  * The order corresponds to JoinState bits in MCMemberRecord.
104  */
105 enum ib_sa_mc_join_states {
106         FULLMEMBER_JOIN,
107         NONMEMBER_JOIN,
108         SENDONLY_NONMEBER_JOIN,
109         SENDONLY_FULLMEMBER_JOIN,
110         NUM_JOIN_MEMBERSHIP_TYPES,
111 };
112
113 #define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT       BIT(12)
114
115 /*
116  * Structures for SA records are named "struct ib_sa_xxx_rec."  No
117  * attempt is made to pack structures to match the physical layout of
118  * SA records in SA MADs; all packing and unpacking is handled by the
119  * SA query code.
120  *
121  * For a record with structure ib_sa_xxx_rec, the naming convention
122  * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
123  * never use different abbreviations or otherwise change the spelling
124  * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
125  *
126  * Reserved rows are indicated with comments to help maintainability.
127  */
128
129 #define IB_SA_PATH_REC_SERVICE_ID                      (IB_SA_COMP_MASK( 0) |\
130                                                         IB_SA_COMP_MASK( 1))
131 #define IB_SA_PATH_REC_DGID                             IB_SA_COMP_MASK( 2)
132 #define IB_SA_PATH_REC_SGID                             IB_SA_COMP_MASK( 3)
133 #define IB_SA_PATH_REC_DLID                             IB_SA_COMP_MASK( 4)
134 #define IB_SA_PATH_REC_SLID                             IB_SA_COMP_MASK( 5)
135 #define IB_SA_PATH_REC_RAW_TRAFFIC                      IB_SA_COMP_MASK( 6)
136 /* reserved:                                                             7 */
137 #define IB_SA_PATH_REC_FLOW_LABEL                       IB_SA_COMP_MASK( 8)
138 #define IB_SA_PATH_REC_HOP_LIMIT                        IB_SA_COMP_MASK( 9)
139 #define IB_SA_PATH_REC_TRAFFIC_CLASS                    IB_SA_COMP_MASK(10)
140 #define IB_SA_PATH_REC_REVERSIBLE                       IB_SA_COMP_MASK(11)
141 #define IB_SA_PATH_REC_NUMB_PATH                        IB_SA_COMP_MASK(12)
142 #define IB_SA_PATH_REC_PKEY                             IB_SA_COMP_MASK(13)
143 #define IB_SA_PATH_REC_QOS_CLASS                        IB_SA_COMP_MASK(14)
144 #define IB_SA_PATH_REC_SL                               IB_SA_COMP_MASK(15)
145 #define IB_SA_PATH_REC_MTU_SELECTOR                     IB_SA_COMP_MASK(16)
146 #define IB_SA_PATH_REC_MTU                              IB_SA_COMP_MASK(17)
147 #define IB_SA_PATH_REC_RATE_SELECTOR                    IB_SA_COMP_MASK(18)
148 #define IB_SA_PATH_REC_RATE                             IB_SA_COMP_MASK(19)
149 #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR        IB_SA_COMP_MASK(20)
150 #define IB_SA_PATH_REC_PACKET_LIFE_TIME                 IB_SA_COMP_MASK(21)
151 #define IB_SA_PATH_REC_PREFERENCE                       IB_SA_COMP_MASK(22)
152
153 enum sa_path_rec_type {
154         SA_PATH_REC_TYPE_IB,
155         SA_PATH_REC_TYPE_ROCE_V1,
156         SA_PATH_REC_TYPE_ROCE_V2,
157         SA_PATH_REC_TYPE_OPA
158 };
159
160 struct sa_path_rec_ib {
161         __be16       dlid;
162         __be16       slid;
163         u8           raw_traffic;
164 };
165
166 /**
167  * struct sa_path_rec_roce - RoCE specific portion of the path record entry
168  * @route_resolved:     When set, it indicates that this route is already
169  *                      resolved for this path record entry.
170  * @dmac:               Destination mac address for the given DGID entry
171  *                      of the path record entry.
172  */
173 struct sa_path_rec_roce {
174         bool    route_resolved;
175         u8           dmac[ETH_ALEN];
176         /* ignored in IB */
177         int          ifindex;
178         /* ignored in IB */
179         struct net  *net;
180
181 };
182
183 struct sa_path_rec_opa {
184         __be32       dlid;
185         __be32       slid;
186         u8           raw_traffic;
187         u8           l2_8B;
188         u8           l2_10B;
189         u8           l2_9B;
190         u8           l2_16B;
191         u8           qos_type;
192         u8           qos_priority;
193 };
194
195 struct sa_path_rec {
196         union ib_gid dgid;
197         union ib_gid sgid;
198         __be64       service_id;
199         /* reserved */
200         __be32       flow_label;
201         u8           hop_limit;
202         u8           traffic_class;
203         u8           reversible;
204         u8           numb_path;
205         __be16       pkey;
206         __be16       qos_class;
207         u8           sl;
208         u8           mtu_selector;
209         u8           mtu;
210         u8           rate_selector;
211         u8           rate;
212         u8           packet_life_time_selector;
213         u8           packet_life_time;
214         u8           preference;
215         union {
216                 struct sa_path_rec_ib ib;
217                 struct sa_path_rec_roce roce;
218                 struct sa_path_rec_opa opa;
219         };
220         enum sa_path_rec_type rec_type;
221 };
222
223 static inline enum ib_gid_type
224                 sa_conv_pathrec_to_gid_type(struct sa_path_rec *rec)
225 {
226         switch (rec->rec_type) {
227         case SA_PATH_REC_TYPE_ROCE_V1:
228                 return IB_GID_TYPE_ROCE;
229         case SA_PATH_REC_TYPE_ROCE_V2:
230                 return IB_GID_TYPE_ROCE_UDP_ENCAP;
231         default:
232                 return IB_GID_TYPE_IB;
233         }
234 }
235
236 static inline enum sa_path_rec_type
237                 sa_conv_gid_to_pathrec_type(enum ib_gid_type type)
238 {
239         switch (type) {
240         case IB_GID_TYPE_ROCE:
241                 return SA_PATH_REC_TYPE_ROCE_V1;
242         case IB_GID_TYPE_ROCE_UDP_ENCAP:
243                 return SA_PATH_REC_TYPE_ROCE_V2;
244         default:
245                 return SA_PATH_REC_TYPE_IB;
246         }
247 }
248
249 static inline void path_conv_opa_to_ib(struct sa_path_rec *ib,
250                                        struct sa_path_rec *opa)
251 {
252         if ((be32_to_cpu(opa->opa.dlid) >=
253              be16_to_cpu(IB_MULTICAST_LID_BASE)) ||
254             (be32_to_cpu(opa->opa.slid) >=
255              be16_to_cpu(IB_MULTICAST_LID_BASE))) {
256                 /* Create OPA GID and zero out the LID */
257                 ib->dgid.global.interface_id
258                                 = OPA_MAKE_ID(be32_to_cpu(opa->opa.dlid));
259                 ib->dgid.global.subnet_prefix
260                                 = opa->dgid.global.subnet_prefix;
261                 ib->sgid.global.interface_id
262                                 = OPA_MAKE_ID(be32_to_cpu(opa->opa.slid));
263                 ib->dgid.global.subnet_prefix
264                                 = opa->dgid.global.subnet_prefix;
265                 ib->ib.dlid     = 0;
266
267                 ib->ib.slid     = 0;
268         } else {
269                 ib->ib.dlid     = htons(ntohl(opa->opa.dlid));
270                 ib->ib.slid     = htons(ntohl(opa->opa.slid));
271         }
272         ib->service_id          = opa->service_id;
273         ib->ib.raw_traffic      = opa->opa.raw_traffic;
274 }
275
276 static inline void path_conv_ib_to_opa(struct sa_path_rec *opa,
277                                        struct sa_path_rec *ib)
278 {
279         __be32 slid, dlid;
280
281         if ((ib_is_opa_gid(&ib->sgid)) ||
282             (ib_is_opa_gid(&ib->dgid))) {
283                 slid = htonl(opa_get_lid_from_gid(&ib->sgid));
284                 dlid = htonl(opa_get_lid_from_gid(&ib->dgid));
285         } else {
286                 slid = htonl(ntohs(ib->ib.slid));
287                 dlid = htonl(ntohs(ib->ib.dlid));
288         }
289         opa->opa.slid           = slid;
290         opa->opa.dlid           = dlid;
291         opa->service_id         = ib->service_id;
292         opa->opa.raw_traffic    = ib->ib.raw_traffic;
293 }
294
295 /* Convert from OPA to IB path record */
296 static inline void sa_convert_path_opa_to_ib(struct sa_path_rec *dest,
297                                              struct sa_path_rec *src)
298 {
299         if (src->rec_type != SA_PATH_REC_TYPE_OPA)
300                 return;
301
302         *dest = *src;
303         dest->rec_type = SA_PATH_REC_TYPE_IB;
304         path_conv_opa_to_ib(dest, src);
305 }
306
307 /* Convert from IB to OPA path record */
308 static inline void sa_convert_path_ib_to_opa(struct sa_path_rec *dest,
309                                              struct sa_path_rec *src)
310 {
311         if (src->rec_type != SA_PATH_REC_TYPE_IB)
312                 return;
313
314         /* Do a structure copy and overwrite the relevant fields */
315         *dest = *src;
316         dest->rec_type = SA_PATH_REC_TYPE_OPA;
317         path_conv_ib_to_opa(dest, src);
318 }
319
320 #define IB_SA_MCMEMBER_REC_MGID                         IB_SA_COMP_MASK( 0)
321 #define IB_SA_MCMEMBER_REC_PORT_GID                     IB_SA_COMP_MASK( 1)
322 #define IB_SA_MCMEMBER_REC_QKEY                         IB_SA_COMP_MASK( 2)
323 #define IB_SA_MCMEMBER_REC_MLID                         IB_SA_COMP_MASK( 3)
324 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR                 IB_SA_COMP_MASK( 4)
325 #define IB_SA_MCMEMBER_REC_MTU                          IB_SA_COMP_MASK( 5)
326 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS                IB_SA_COMP_MASK( 6)
327 #define IB_SA_MCMEMBER_REC_PKEY                         IB_SA_COMP_MASK( 7)
328 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR                IB_SA_COMP_MASK( 8)
329 #define IB_SA_MCMEMBER_REC_RATE                         IB_SA_COMP_MASK( 9)
330 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(10)
331 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME             IB_SA_COMP_MASK(11)
332 #define IB_SA_MCMEMBER_REC_SL                           IB_SA_COMP_MASK(12)
333 #define IB_SA_MCMEMBER_REC_FLOW_LABEL                   IB_SA_COMP_MASK(13)
334 #define IB_SA_MCMEMBER_REC_HOP_LIMIT                    IB_SA_COMP_MASK(14)
335 #define IB_SA_MCMEMBER_REC_SCOPE                        IB_SA_COMP_MASK(15)
336 #define IB_SA_MCMEMBER_REC_JOIN_STATE                   IB_SA_COMP_MASK(16)
337 #define IB_SA_MCMEMBER_REC_PROXY_JOIN                   IB_SA_COMP_MASK(17)
338
339 struct ib_sa_mcmember_rec {
340         union ib_gid mgid;
341         union ib_gid port_gid;
342         __be32       qkey;
343         __be16       mlid;
344         u8           mtu_selector;
345         u8           mtu;
346         u8           traffic_class;
347         __be16       pkey;
348         u8           rate_selector;
349         u8           rate;
350         u8           packet_life_time_selector;
351         u8           packet_life_time;
352         u8           sl;
353         __be32       flow_label;
354         u8           hop_limit;
355         u8           scope;
356         u8           join_state;
357         u8           proxy_join;
358 };
359
360 /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1  */
361 #define IB_SA_SERVICE_REC_SERVICE_ID                    IB_SA_COMP_MASK( 0)
362 #define IB_SA_SERVICE_REC_SERVICE_GID                   IB_SA_COMP_MASK( 1)
363 #define IB_SA_SERVICE_REC_SERVICE_PKEY                  IB_SA_COMP_MASK( 2)
364 /* reserved:                                                             3 */
365 #define IB_SA_SERVICE_REC_SERVICE_LEASE                 IB_SA_COMP_MASK( 4)
366 #define IB_SA_SERVICE_REC_SERVICE_KEY                   IB_SA_COMP_MASK( 5)
367 #define IB_SA_SERVICE_REC_SERVICE_NAME                  IB_SA_COMP_MASK( 6)
368 #define IB_SA_SERVICE_REC_SERVICE_DATA8_0               IB_SA_COMP_MASK( 7)
369 #define IB_SA_SERVICE_REC_SERVICE_DATA8_1               IB_SA_COMP_MASK( 8)
370 #define IB_SA_SERVICE_REC_SERVICE_DATA8_2               IB_SA_COMP_MASK( 9)
371 #define IB_SA_SERVICE_REC_SERVICE_DATA8_3               IB_SA_COMP_MASK(10)
372 #define IB_SA_SERVICE_REC_SERVICE_DATA8_4               IB_SA_COMP_MASK(11)
373 #define IB_SA_SERVICE_REC_SERVICE_DATA8_5               IB_SA_COMP_MASK(12)
374 #define IB_SA_SERVICE_REC_SERVICE_DATA8_6               IB_SA_COMP_MASK(13)
375 #define IB_SA_SERVICE_REC_SERVICE_DATA8_7               IB_SA_COMP_MASK(14)
376 #define IB_SA_SERVICE_REC_SERVICE_DATA8_8               IB_SA_COMP_MASK(15)
377 #define IB_SA_SERVICE_REC_SERVICE_DATA8_9               IB_SA_COMP_MASK(16)
378 #define IB_SA_SERVICE_REC_SERVICE_DATA8_10              IB_SA_COMP_MASK(17)
379 #define IB_SA_SERVICE_REC_SERVICE_DATA8_11              IB_SA_COMP_MASK(18)
380 #define IB_SA_SERVICE_REC_SERVICE_DATA8_12              IB_SA_COMP_MASK(19)
381 #define IB_SA_SERVICE_REC_SERVICE_DATA8_13              IB_SA_COMP_MASK(20)
382 #define IB_SA_SERVICE_REC_SERVICE_DATA8_14              IB_SA_COMP_MASK(21)
383 #define IB_SA_SERVICE_REC_SERVICE_DATA8_15              IB_SA_COMP_MASK(22)
384 #define IB_SA_SERVICE_REC_SERVICE_DATA16_0              IB_SA_COMP_MASK(23)
385 #define IB_SA_SERVICE_REC_SERVICE_DATA16_1              IB_SA_COMP_MASK(24)
386 #define IB_SA_SERVICE_REC_SERVICE_DATA16_2              IB_SA_COMP_MASK(25)
387 #define IB_SA_SERVICE_REC_SERVICE_DATA16_3              IB_SA_COMP_MASK(26)
388 #define IB_SA_SERVICE_REC_SERVICE_DATA16_4              IB_SA_COMP_MASK(27)
389 #define IB_SA_SERVICE_REC_SERVICE_DATA16_5              IB_SA_COMP_MASK(28)
390 #define IB_SA_SERVICE_REC_SERVICE_DATA16_6              IB_SA_COMP_MASK(29)
391 #define IB_SA_SERVICE_REC_SERVICE_DATA16_7              IB_SA_COMP_MASK(30)
392 #define IB_SA_SERVICE_REC_SERVICE_DATA32_0              IB_SA_COMP_MASK(31)
393 #define IB_SA_SERVICE_REC_SERVICE_DATA32_1              IB_SA_COMP_MASK(32)
394 #define IB_SA_SERVICE_REC_SERVICE_DATA32_2              IB_SA_COMP_MASK(33)
395 #define IB_SA_SERVICE_REC_SERVICE_DATA32_3              IB_SA_COMP_MASK(34)
396 #define IB_SA_SERVICE_REC_SERVICE_DATA64_0              IB_SA_COMP_MASK(35)
397 #define IB_SA_SERVICE_REC_SERVICE_DATA64_1              IB_SA_COMP_MASK(36)
398
399 #define IB_DEFAULT_SERVICE_LEASE        0xFFFFFFFF
400
401 struct ib_sa_service_rec {
402         u64             id;
403         union ib_gid    gid;
404         __be16          pkey;
405         /* reserved */
406         u32             lease;
407         u8              key[16];
408         u8              name[64];
409         u8              data8[16];
410         u16             data16[8];
411         u32             data32[4];
412         u64             data64[2];
413 };
414
415 #define IB_SA_GUIDINFO_REC_LID          IB_SA_COMP_MASK(0)
416 #define IB_SA_GUIDINFO_REC_BLOCK_NUM    IB_SA_COMP_MASK(1)
417 #define IB_SA_GUIDINFO_REC_RES1         IB_SA_COMP_MASK(2)
418 #define IB_SA_GUIDINFO_REC_RES2         IB_SA_COMP_MASK(3)
419 #define IB_SA_GUIDINFO_REC_GID0         IB_SA_COMP_MASK(4)
420 #define IB_SA_GUIDINFO_REC_GID1         IB_SA_COMP_MASK(5)
421 #define IB_SA_GUIDINFO_REC_GID2         IB_SA_COMP_MASK(6)
422 #define IB_SA_GUIDINFO_REC_GID3         IB_SA_COMP_MASK(7)
423 #define IB_SA_GUIDINFO_REC_GID4         IB_SA_COMP_MASK(8)
424 #define IB_SA_GUIDINFO_REC_GID5         IB_SA_COMP_MASK(9)
425 #define IB_SA_GUIDINFO_REC_GID6         IB_SA_COMP_MASK(10)
426 #define IB_SA_GUIDINFO_REC_GID7         IB_SA_COMP_MASK(11)
427
428 struct ib_sa_guidinfo_rec {
429         __be16  lid;
430         u8      block_num;
431         /* reserved */
432         u8      res1;
433         __be32  res2;
434         u8      guid_info_list[64];
435 };
436
437 struct ib_sa_client {
438         atomic_t users;
439         struct completion comp;
440 };
441
442 /**
443  * ib_sa_register_client - Register an SA client.
444  */
445 void ib_sa_register_client(struct ib_sa_client *client);
446
447 /**
448  * ib_sa_unregister_client - Deregister an SA client.
449  * @client: Client object to deregister.
450  */
451 void ib_sa_unregister_client(struct ib_sa_client *client);
452
453 struct ib_sa_query;
454
455 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
456
457 int ib_sa_path_rec_get(struct ib_sa_client *client,
458                        struct ib_device *device, u8 port_num,
459                        struct sa_path_rec *rec,
460                        ib_sa_comp_mask comp_mask,
461                        int timeout_ms, gfp_t gfp_mask,
462                        void (*callback)(int status,
463                                         struct sa_path_rec *resp,
464                                         void *context),
465                        void *context,
466                        struct ib_sa_query **query);
467
468 int ib_sa_service_rec_query(struct ib_sa_client *client,
469                          struct ib_device *device, u8 port_num,
470                          u8 method,
471                          struct ib_sa_service_rec *rec,
472                          ib_sa_comp_mask comp_mask,
473                          int timeout_ms, gfp_t gfp_mask,
474                          void (*callback)(int status,
475                                           struct ib_sa_service_rec *resp,
476                                           void *context),
477                          void *context,
478                          struct ib_sa_query **sa_query);
479
480 struct ib_sa_multicast {
481         struct ib_sa_mcmember_rec rec;
482         ib_sa_comp_mask         comp_mask;
483         int                     (*callback)(int status,
484                                             struct ib_sa_multicast *multicast);
485         void                    *context;
486 };
487
488 /**
489  * ib_sa_join_multicast - Initiates a join request to the specified multicast
490  *   group.
491  * @client: SA client
492  * @device: Device associated with the multicast group.
493  * @port_num: Port on the specified device to associate with the multicast
494  *   group.
495  * @rec: SA multicast member record specifying group attributes.
496  * @comp_mask: Component mask indicating which group attributes of %rec are
497  *   valid.
498  * @gfp_mask: GFP mask for memory allocations.
499  * @callback: User callback invoked once the join operation completes.
500  * @context: User specified context stored with the ib_sa_multicast structure.
501  *
502  * This call initiates a multicast join request with the SA for the specified
503  * multicast group.  If the join operation is started successfully, it returns
504  * an ib_sa_multicast structure that is used to track the multicast operation.
505  * Users must free this structure by calling ib_free_multicast, even if the
506  * join operation later fails.  (The callback status is non-zero.)
507  *
508  * If the join operation fails; status will be non-zero, with the following
509  * failures possible:
510  * -ETIMEDOUT: The request timed out.
511  * -EIO: An error occurred sending the query.
512  * -EINVAL: The MCMemberRecord values differed from the existing group's.
513  * -ENETRESET: Indicates that an fatal error has occurred on the multicast
514  *   group, and the user must rejoin the group to continue using it.
515  */
516 struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
517                                              struct ib_device *device, u8 port_num,
518                                              struct ib_sa_mcmember_rec *rec,
519                                              ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
520                                              int (*callback)(int status,
521                                                              struct ib_sa_multicast
522                                                                     *multicast),
523                                              void *context);
524
525 /**
526  * ib_free_multicast - Frees the multicast tracking structure, and releases
527  *    any reference on the multicast group.
528  * @multicast: Multicast tracking structure allocated by ib_join_multicast.
529  *
530  * This call blocks until the multicast identifier is destroyed.  It may
531  * not be called from within the multicast callback; however, returning a non-
532  * zero value from the callback will result in destroying the multicast
533  * tracking structure.
534  */
535 void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
536
537 /**
538  * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
539  *   returns it if found.
540  * @device: Device associated with the multicast group.
541  * @port_num: Port on the specified device to associate with the multicast
542  *   group.
543  * @mgid: MGID of multicast group.
544  * @rec: Location to copy SA multicast member record.
545  */
546 int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num,
547                            union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
548
549 /**
550  * ib_init_ah_from_mcmember - Initialize address handle attributes based on
551  * an SA multicast member record.
552  */
553 int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
554                              struct ib_sa_mcmember_rec *rec,
555                              struct net_device *ndev,
556                              enum ib_gid_type gid_type,
557                              struct rdma_ah_attr *ah_attr);
558
559 /**
560  * ib_init_ah_attr_from_path - Initialize address handle attributes based on
561  *   an SA path record.
562  */
563 int ib_init_ah_attr_from_path(struct ib_device *device, u8 port_num,
564                               struct sa_path_rec *rec,
565                               struct rdma_ah_attr *ah_attr);
566
567 /**
568  * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
569  * to IB MAD wire format.
570  */
571 void ib_sa_pack_path(struct sa_path_rec *rec, void *attribute);
572
573 /**
574  * ib_sa_unpack_path - Convert a path record from MAD format to struct
575  * ib_sa_path_rec.
576  */
577 void ib_sa_unpack_path(void *attribute, struct sa_path_rec *rec);
578
579 /* Support GuidInfoRecord */
580 int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
581                               struct ib_device *device, u8 port_num,
582                               struct ib_sa_guidinfo_rec *rec,
583                               ib_sa_comp_mask comp_mask, u8 method,
584                               int timeout_ms, gfp_t gfp_mask,
585                               void (*callback)(int status,
586                                                struct ib_sa_guidinfo_rec *resp,
587                                                void *context),
588                               void *context,
589                               struct ib_sa_query **sa_query);
590
591 bool ib_sa_sendonly_fullmem_support(struct ib_sa_client *client,
592                                     struct ib_device *device,
593                                     u8 port_num);
594
595 static inline bool sa_path_is_roce(struct sa_path_rec *rec)
596 {
597         return ((rec->rec_type == SA_PATH_REC_TYPE_ROCE_V1) ||
598                 (rec->rec_type == SA_PATH_REC_TYPE_ROCE_V2));
599 }
600
601 static inline bool sa_path_is_opa(struct sa_path_rec *rec)
602 {
603         return (rec->rec_type == SA_PATH_REC_TYPE_OPA);
604 }
605
606 static inline void sa_path_set_slid(struct sa_path_rec *rec, u32 slid)
607 {
608         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
609                 rec->ib.slid = cpu_to_be16(slid);
610         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
611                 rec->opa.slid = cpu_to_be32(slid);
612 }
613
614 static inline void sa_path_set_dlid(struct sa_path_rec *rec, u32 dlid)
615 {
616         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
617                 rec->ib.dlid = cpu_to_be16(dlid);
618         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
619                 rec->opa.dlid = cpu_to_be32(dlid);
620 }
621
622 static inline void sa_path_set_raw_traffic(struct sa_path_rec *rec,
623                                            u8 raw_traffic)
624 {
625         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
626                 rec->ib.raw_traffic = raw_traffic;
627         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
628                 rec->opa.raw_traffic = raw_traffic;
629 }
630
631 static inline __be32 sa_path_get_slid(struct sa_path_rec *rec)
632 {
633         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
634                 return htonl(ntohs(rec->ib.slid));
635         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
636                 return rec->opa.slid;
637         return 0;
638 }
639
640 static inline __be32 sa_path_get_dlid(struct sa_path_rec *rec)
641 {
642         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
643                 return htonl(ntohs(rec->ib.dlid));
644         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
645                 return rec->opa.dlid;
646         return 0;
647 }
648
649 static inline u8 sa_path_get_raw_traffic(struct sa_path_rec *rec)
650 {
651         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
652                 return rec->ib.raw_traffic;
653         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
654                 return rec->opa.raw_traffic;
655         return 0;
656 }
657
658 static inline void sa_path_set_dmac(struct sa_path_rec *rec, u8 *dmac)
659 {
660         if (sa_path_is_roce(rec))
661                 memcpy(rec->roce.dmac, dmac, ETH_ALEN);
662 }
663
664 static inline void sa_path_set_dmac_zero(struct sa_path_rec *rec)
665 {
666         if (sa_path_is_roce(rec))
667                 eth_zero_addr(rec->roce.dmac);
668 }
669
670 static inline void sa_path_set_ifindex(struct sa_path_rec *rec, int ifindex)
671 {
672         if (sa_path_is_roce(rec))
673                 rec->roce.ifindex = ifindex;
674 }
675
676 static inline void sa_path_set_ndev(struct sa_path_rec *rec, struct net *net)
677 {
678         if (sa_path_is_roce(rec))
679                 rec->roce.net = net;
680 }
681
682 static inline u8 *sa_path_get_dmac(struct sa_path_rec *rec)
683 {
684         if (sa_path_is_roce(rec))
685                 return rec->roce.dmac;
686         return NULL;
687 }
688
689 static inline int sa_path_get_ifindex(struct sa_path_rec *rec)
690 {
691         if (sa_path_is_roce(rec))
692                 return rec->roce.ifindex;
693         return 0;
694 }
695
696 static inline struct net *sa_path_get_ndev(struct sa_path_rec *rec)
697 {
698         if (sa_path_is_roce(rec))
699                 return rec->roce.net;
700         return NULL;
701 }
702
703 static inline struct net_device *ib_get_ndev_from_path(struct sa_path_rec *rec)
704 {
705         return sa_path_get_ndev(rec) ?
706                 dev_get_by_index(sa_path_get_ndev(rec),
707                                  sa_path_get_ifindex(rec))
708                 : NULL;
709 }
710
711 #endif /* IB_SA_H */