Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
[cascardo/linux.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
47 enum {
48         IB_SA_CLASS_VERSION             = 2,    /* IB spec version 1.1/1.2 */
49
50         IB_SA_METHOD_GET_TABLE          = 0x12,
51         IB_SA_METHOD_GET_TABLE_RESP     = 0x92,
52         IB_SA_METHOD_DELETE             = 0x15,
53         IB_SA_METHOD_DELETE_RESP        = 0x95,
54         IB_SA_METHOD_GET_MULTI          = 0x14,
55         IB_SA_METHOD_GET_MULTI_RESP     = 0x94,
56         IB_SA_METHOD_GET_TRACE_TBL      = 0x13
57 };
58
59 enum {
60         IB_SA_ATTR_CLASS_PORTINFO    = 0x01,
61         IB_SA_ATTR_NOTICE            = 0x02,
62         IB_SA_ATTR_INFORM_INFO       = 0x03,
63         IB_SA_ATTR_NODE_REC          = 0x11,
64         IB_SA_ATTR_PORT_INFO_REC     = 0x12,
65         IB_SA_ATTR_SL2VL_REC         = 0x13,
66         IB_SA_ATTR_SWITCH_REC        = 0x14,
67         IB_SA_ATTR_LINEAR_FDB_REC    = 0x15,
68         IB_SA_ATTR_RANDOM_FDB_REC    = 0x16,
69         IB_SA_ATTR_MCAST_FDB_REC     = 0x17,
70         IB_SA_ATTR_SM_INFO_REC       = 0x18,
71         IB_SA_ATTR_LINK_REC          = 0x20,
72         IB_SA_ATTR_GUID_INFO_REC     = 0x30,
73         IB_SA_ATTR_SERVICE_REC       = 0x31,
74         IB_SA_ATTR_PARTITION_REC     = 0x33,
75         IB_SA_ATTR_PATH_REC          = 0x35,
76         IB_SA_ATTR_VL_ARB_REC        = 0x36,
77         IB_SA_ATTR_MC_MEMBER_REC     = 0x38,
78         IB_SA_ATTR_TRACE_REC         = 0x39,
79         IB_SA_ATTR_MULTI_PATH_REC    = 0x3a,
80         IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
81         IB_SA_ATTR_INFORM_INFO_REC   = 0xf3
82 };
83
84 enum ib_sa_selector {
85         IB_SA_GT   = 0,
86         IB_SA_LT   = 1,
87         IB_SA_EQ   = 2,
88         /*
89          * The meaning of "best" depends on the attribute: for
90          * example, for MTU best will return the largest available
91          * MTU, while for packet life time, best will return the
92          * smallest available life time.
93          */
94         IB_SA_BEST = 3
95 };
96
97 /*
98  * There are 4 types of join states:
99  * FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
100  * The order corresponds to JoinState bits in MCMemberRecord.
101  */
102 enum ib_sa_mc_join_states {
103         FULLMEMBER_JOIN,
104         NONMEMBER_JOIN,
105         SENDONLY_NONMEBER_JOIN,
106         SENDONLY_FULLMEMBER_JOIN,
107         NUM_JOIN_MEMBERSHIP_TYPES,
108 };
109
110 #define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT       BIT(12)
111
112 /*
113  * Structures for SA records are named "struct ib_sa_xxx_rec."  No
114  * attempt is made to pack structures to match the physical layout of
115  * SA records in SA MADs; all packing and unpacking is handled by the
116  * SA query code.
117  *
118  * For a record with structure ib_sa_xxx_rec, the naming convention
119  * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
120  * never use different abbreviations or otherwise change the spelling
121  * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
122  *
123  * Reserved rows are indicated with comments to help maintainability.
124  */
125
126 #define IB_SA_PATH_REC_SERVICE_ID                      (IB_SA_COMP_MASK( 0) |\
127                                                         IB_SA_COMP_MASK( 1))
128 #define IB_SA_PATH_REC_DGID                             IB_SA_COMP_MASK( 2)
129 #define IB_SA_PATH_REC_SGID                             IB_SA_COMP_MASK( 3)
130 #define IB_SA_PATH_REC_DLID                             IB_SA_COMP_MASK( 4)
131 #define IB_SA_PATH_REC_SLID                             IB_SA_COMP_MASK( 5)
132 #define IB_SA_PATH_REC_RAW_TRAFFIC                      IB_SA_COMP_MASK( 6)
133 /* reserved:                                                             7 */
134 #define IB_SA_PATH_REC_FLOW_LABEL                       IB_SA_COMP_MASK( 8)
135 #define IB_SA_PATH_REC_HOP_LIMIT                        IB_SA_COMP_MASK( 9)
136 #define IB_SA_PATH_REC_TRAFFIC_CLASS                    IB_SA_COMP_MASK(10)
137 #define IB_SA_PATH_REC_REVERSIBLE                       IB_SA_COMP_MASK(11)
138 #define IB_SA_PATH_REC_NUMB_PATH                        IB_SA_COMP_MASK(12)
139 #define IB_SA_PATH_REC_PKEY                             IB_SA_COMP_MASK(13)
140 #define IB_SA_PATH_REC_QOS_CLASS                        IB_SA_COMP_MASK(14)
141 #define IB_SA_PATH_REC_SL                               IB_SA_COMP_MASK(15)
142 #define IB_SA_PATH_REC_MTU_SELECTOR                     IB_SA_COMP_MASK(16)
143 #define IB_SA_PATH_REC_MTU                              IB_SA_COMP_MASK(17)
144 #define IB_SA_PATH_REC_RATE_SELECTOR                    IB_SA_COMP_MASK(18)
145 #define IB_SA_PATH_REC_RATE                             IB_SA_COMP_MASK(19)
146 #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR        IB_SA_COMP_MASK(20)
147 #define IB_SA_PATH_REC_PACKET_LIFE_TIME                 IB_SA_COMP_MASK(21)
148 #define IB_SA_PATH_REC_PREFERENCE                       IB_SA_COMP_MASK(22)
149
150 struct ib_sa_path_rec {
151         __be64       service_id;
152         union ib_gid dgid;
153         union ib_gid sgid;
154         __be16       dlid;
155         __be16       slid;
156         int          raw_traffic;
157         /* reserved */
158         __be32       flow_label;
159         u8           hop_limit;
160         u8           traffic_class;
161         int          reversible;
162         u8           numb_path;
163         __be16       pkey;
164         __be16       qos_class;
165         u8           sl;
166         u8           mtu_selector;
167         u8           mtu;
168         u8           rate_selector;
169         u8           rate;
170         u8           packet_life_time_selector;
171         u8           packet_life_time;
172         u8           preference;
173         u8           dmac[ETH_ALEN];
174         /* ignored in IB */
175         int          ifindex;
176         /* ignored in IB */
177         struct net  *net;
178         enum ib_gid_type gid_type;
179 };
180
181 static inline struct net_device *ib_get_ndev_from_path(struct ib_sa_path_rec *rec)
182 {
183         return rec->net ? dev_get_by_index(rec->net, rec->ifindex) : NULL;
184 }
185
186 #define IB_SA_MCMEMBER_REC_MGID                         IB_SA_COMP_MASK( 0)
187 #define IB_SA_MCMEMBER_REC_PORT_GID                     IB_SA_COMP_MASK( 1)
188 #define IB_SA_MCMEMBER_REC_QKEY                         IB_SA_COMP_MASK( 2)
189 #define IB_SA_MCMEMBER_REC_MLID                         IB_SA_COMP_MASK( 3)
190 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR                 IB_SA_COMP_MASK( 4)
191 #define IB_SA_MCMEMBER_REC_MTU                          IB_SA_COMP_MASK( 5)
192 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS                IB_SA_COMP_MASK( 6)
193 #define IB_SA_MCMEMBER_REC_PKEY                         IB_SA_COMP_MASK( 7)
194 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR                IB_SA_COMP_MASK( 8)
195 #define IB_SA_MCMEMBER_REC_RATE                         IB_SA_COMP_MASK( 9)
196 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(10)
197 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME             IB_SA_COMP_MASK(11)
198 #define IB_SA_MCMEMBER_REC_SL                           IB_SA_COMP_MASK(12)
199 #define IB_SA_MCMEMBER_REC_FLOW_LABEL                   IB_SA_COMP_MASK(13)
200 #define IB_SA_MCMEMBER_REC_HOP_LIMIT                    IB_SA_COMP_MASK(14)
201 #define IB_SA_MCMEMBER_REC_SCOPE                        IB_SA_COMP_MASK(15)
202 #define IB_SA_MCMEMBER_REC_JOIN_STATE                   IB_SA_COMP_MASK(16)
203 #define IB_SA_MCMEMBER_REC_PROXY_JOIN                   IB_SA_COMP_MASK(17)
204
205 struct ib_sa_mcmember_rec {
206         union ib_gid mgid;
207         union ib_gid port_gid;
208         __be32       qkey;
209         __be16       mlid;
210         u8           mtu_selector;
211         u8           mtu;
212         u8           traffic_class;
213         __be16       pkey;
214         u8           rate_selector;
215         u8           rate;
216         u8           packet_life_time_selector;
217         u8           packet_life_time;
218         u8           sl;
219         __be32       flow_label;
220         u8           hop_limit;
221         u8           scope;
222         u8           join_state;
223         int          proxy_join;
224 };
225
226 /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1  */
227 #define IB_SA_SERVICE_REC_SERVICE_ID                    IB_SA_COMP_MASK( 0)
228 #define IB_SA_SERVICE_REC_SERVICE_GID                   IB_SA_COMP_MASK( 1)
229 #define IB_SA_SERVICE_REC_SERVICE_PKEY                  IB_SA_COMP_MASK( 2)
230 /* reserved:                                                             3 */
231 #define IB_SA_SERVICE_REC_SERVICE_LEASE                 IB_SA_COMP_MASK( 4)
232 #define IB_SA_SERVICE_REC_SERVICE_KEY                   IB_SA_COMP_MASK( 5)
233 #define IB_SA_SERVICE_REC_SERVICE_NAME                  IB_SA_COMP_MASK( 6)
234 #define IB_SA_SERVICE_REC_SERVICE_DATA8_0               IB_SA_COMP_MASK( 7)
235 #define IB_SA_SERVICE_REC_SERVICE_DATA8_1               IB_SA_COMP_MASK( 8)
236 #define IB_SA_SERVICE_REC_SERVICE_DATA8_2               IB_SA_COMP_MASK( 9)
237 #define IB_SA_SERVICE_REC_SERVICE_DATA8_3               IB_SA_COMP_MASK(10)
238 #define IB_SA_SERVICE_REC_SERVICE_DATA8_4               IB_SA_COMP_MASK(11)
239 #define IB_SA_SERVICE_REC_SERVICE_DATA8_5               IB_SA_COMP_MASK(12)
240 #define IB_SA_SERVICE_REC_SERVICE_DATA8_6               IB_SA_COMP_MASK(13)
241 #define IB_SA_SERVICE_REC_SERVICE_DATA8_7               IB_SA_COMP_MASK(14)
242 #define IB_SA_SERVICE_REC_SERVICE_DATA8_8               IB_SA_COMP_MASK(15)
243 #define IB_SA_SERVICE_REC_SERVICE_DATA8_9               IB_SA_COMP_MASK(16)
244 #define IB_SA_SERVICE_REC_SERVICE_DATA8_10              IB_SA_COMP_MASK(17)
245 #define IB_SA_SERVICE_REC_SERVICE_DATA8_11              IB_SA_COMP_MASK(18)
246 #define IB_SA_SERVICE_REC_SERVICE_DATA8_12              IB_SA_COMP_MASK(19)
247 #define IB_SA_SERVICE_REC_SERVICE_DATA8_13              IB_SA_COMP_MASK(20)
248 #define IB_SA_SERVICE_REC_SERVICE_DATA8_14              IB_SA_COMP_MASK(21)
249 #define IB_SA_SERVICE_REC_SERVICE_DATA8_15              IB_SA_COMP_MASK(22)
250 #define IB_SA_SERVICE_REC_SERVICE_DATA16_0              IB_SA_COMP_MASK(23)
251 #define IB_SA_SERVICE_REC_SERVICE_DATA16_1              IB_SA_COMP_MASK(24)
252 #define IB_SA_SERVICE_REC_SERVICE_DATA16_2              IB_SA_COMP_MASK(25)
253 #define IB_SA_SERVICE_REC_SERVICE_DATA16_3              IB_SA_COMP_MASK(26)
254 #define IB_SA_SERVICE_REC_SERVICE_DATA16_4              IB_SA_COMP_MASK(27)
255 #define IB_SA_SERVICE_REC_SERVICE_DATA16_5              IB_SA_COMP_MASK(28)
256 #define IB_SA_SERVICE_REC_SERVICE_DATA16_6              IB_SA_COMP_MASK(29)
257 #define IB_SA_SERVICE_REC_SERVICE_DATA16_7              IB_SA_COMP_MASK(30)
258 #define IB_SA_SERVICE_REC_SERVICE_DATA32_0              IB_SA_COMP_MASK(31)
259 #define IB_SA_SERVICE_REC_SERVICE_DATA32_1              IB_SA_COMP_MASK(32)
260 #define IB_SA_SERVICE_REC_SERVICE_DATA32_2              IB_SA_COMP_MASK(33)
261 #define IB_SA_SERVICE_REC_SERVICE_DATA32_3              IB_SA_COMP_MASK(34)
262 #define IB_SA_SERVICE_REC_SERVICE_DATA64_0              IB_SA_COMP_MASK(35)
263 #define IB_SA_SERVICE_REC_SERVICE_DATA64_1              IB_SA_COMP_MASK(36)
264
265 #define IB_DEFAULT_SERVICE_LEASE        0xFFFFFFFF
266
267 struct ib_sa_service_rec {
268         u64             id;
269         union ib_gid    gid;
270         __be16          pkey;
271         /* reserved */
272         u32             lease;
273         u8              key[16];
274         u8              name[64];
275         u8              data8[16];
276         u16             data16[8];
277         u32             data32[4];
278         u64             data64[2];
279 };
280
281 #define IB_SA_GUIDINFO_REC_LID          IB_SA_COMP_MASK(0)
282 #define IB_SA_GUIDINFO_REC_BLOCK_NUM    IB_SA_COMP_MASK(1)
283 #define IB_SA_GUIDINFO_REC_RES1         IB_SA_COMP_MASK(2)
284 #define IB_SA_GUIDINFO_REC_RES2         IB_SA_COMP_MASK(3)
285 #define IB_SA_GUIDINFO_REC_GID0         IB_SA_COMP_MASK(4)
286 #define IB_SA_GUIDINFO_REC_GID1         IB_SA_COMP_MASK(5)
287 #define IB_SA_GUIDINFO_REC_GID2         IB_SA_COMP_MASK(6)
288 #define IB_SA_GUIDINFO_REC_GID3         IB_SA_COMP_MASK(7)
289 #define IB_SA_GUIDINFO_REC_GID4         IB_SA_COMP_MASK(8)
290 #define IB_SA_GUIDINFO_REC_GID5         IB_SA_COMP_MASK(9)
291 #define IB_SA_GUIDINFO_REC_GID6         IB_SA_COMP_MASK(10)
292 #define IB_SA_GUIDINFO_REC_GID7         IB_SA_COMP_MASK(11)
293
294 struct ib_sa_guidinfo_rec {
295         __be16  lid;
296         u8      block_num;
297         /* reserved */
298         u8      res1;
299         __be32  res2;
300         u8      guid_info_list[64];
301 };
302
303 struct ib_sa_client {
304         atomic_t users;
305         struct completion comp;
306 };
307
308 /**
309  * ib_sa_register_client - Register an SA client.
310  */
311 void ib_sa_register_client(struct ib_sa_client *client);
312
313 /**
314  * ib_sa_unregister_client - Deregister an SA client.
315  * @client: Client object to deregister.
316  */
317 void ib_sa_unregister_client(struct ib_sa_client *client);
318
319 struct ib_sa_query;
320
321 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
322
323 int ib_sa_path_rec_get(struct ib_sa_client *client,
324                        struct ib_device *device, u8 port_num,
325                        struct ib_sa_path_rec *rec,
326                        ib_sa_comp_mask comp_mask,
327                        int timeout_ms, gfp_t gfp_mask,
328                        void (*callback)(int status,
329                                         struct ib_sa_path_rec *resp,
330                                         void *context),
331                        void *context,
332                        struct ib_sa_query **query);
333
334 int ib_sa_service_rec_query(struct ib_sa_client *client,
335                          struct ib_device *device, u8 port_num,
336                          u8 method,
337                          struct ib_sa_service_rec *rec,
338                          ib_sa_comp_mask comp_mask,
339                          int timeout_ms, gfp_t gfp_mask,
340                          void (*callback)(int status,
341                                           struct ib_sa_service_rec *resp,
342                                           void *context),
343                          void *context,
344                          struct ib_sa_query **sa_query);
345
346 struct ib_sa_multicast {
347         struct ib_sa_mcmember_rec rec;
348         ib_sa_comp_mask         comp_mask;
349         int                     (*callback)(int status,
350                                             struct ib_sa_multicast *multicast);
351         void                    *context;
352 };
353
354 /**
355  * ib_sa_join_multicast - Initiates a join request to the specified multicast
356  *   group.
357  * @client: SA client
358  * @device: Device associated with the multicast group.
359  * @port_num: Port on the specified device to associate with the multicast
360  *   group.
361  * @rec: SA multicast member record specifying group attributes.
362  * @comp_mask: Component mask indicating which group attributes of %rec are
363  *   valid.
364  * @gfp_mask: GFP mask for memory allocations.
365  * @callback: User callback invoked once the join operation completes.
366  * @context: User specified context stored with the ib_sa_multicast structure.
367  *
368  * This call initiates a multicast join request with the SA for the specified
369  * multicast group.  If the join operation is started successfully, it returns
370  * an ib_sa_multicast structure that is used to track the multicast operation.
371  * Users must free this structure by calling ib_free_multicast, even if the
372  * join operation later fails.  (The callback status is non-zero.)
373  *
374  * If the join operation fails; status will be non-zero, with the following
375  * failures possible:
376  * -ETIMEDOUT: The request timed out.
377  * -EIO: An error occurred sending the query.
378  * -EINVAL: The MCMemberRecord values differed from the existing group's.
379  * -ENETRESET: Indicates that an fatal error has occurred on the multicast
380  *   group, and the user must rejoin the group to continue using it.
381  */
382 struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
383                                              struct ib_device *device, u8 port_num,
384                                              struct ib_sa_mcmember_rec *rec,
385                                              ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
386                                              int (*callback)(int status,
387                                                              struct ib_sa_multicast
388                                                                     *multicast),
389                                              void *context);
390
391 /**
392  * ib_free_multicast - Frees the multicast tracking structure, and releases
393  *    any reference on the multicast group.
394  * @multicast: Multicast tracking structure allocated by ib_join_multicast.
395  *
396  * This call blocks until the multicast identifier is destroyed.  It may
397  * not be called from within the multicast callback; however, returning a non-
398  * zero value from the callback will result in destroying the multicast
399  * tracking structure.
400  */
401 void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
402
403 /**
404  * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
405  *   returns it if found.
406  * @device: Device associated with the multicast group.
407  * @port_num: Port on the specified device to associate with the multicast
408  *   group.
409  * @mgid: MGID of multicast group.
410  * @rec: Location to copy SA multicast member record.
411  */
412 int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num,
413                            union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
414
415 /**
416  * ib_init_ah_from_mcmember - Initialize address handle attributes based on
417  * an SA multicast member record.
418  */
419 int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
420                              struct ib_sa_mcmember_rec *rec,
421                              struct net_device *ndev,
422                              enum ib_gid_type gid_type,
423                              struct ib_ah_attr *ah_attr);
424
425 /**
426  * ib_init_ah_from_path - Initialize address handle attributes based on an SA
427  *   path record.
428  */
429 int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
430                          struct ib_sa_path_rec *rec,
431                          struct ib_ah_attr *ah_attr);
432
433 /**
434  * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
435  * to IB MAD wire format.
436  */
437 void ib_sa_pack_path(struct ib_sa_path_rec *rec, void *attribute);
438
439 /**
440  * ib_sa_unpack_path - Convert a path record from MAD format to struct
441  * ib_sa_path_rec.
442  */
443 void ib_sa_unpack_path(void *attribute, struct ib_sa_path_rec *rec);
444
445 /* Support GuidInfoRecord */
446 int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
447                               struct ib_device *device, u8 port_num,
448                               struct ib_sa_guidinfo_rec *rec,
449                               ib_sa_comp_mask comp_mask, u8 method,
450                               int timeout_ms, gfp_t gfp_mask,
451                               void (*callback)(int status,
452                                                struct ib_sa_guidinfo_rec *resp,
453                                                void *context),
454                               void *context,
455                               struct ib_sa_query **sa_query);
456
457 /* Support get SA ClassPortInfo */
458 int ib_sa_classport_info_rec_query(struct ib_sa_client *client,
459                                    struct ib_device *device, u8 port_num,
460                                    int timeout_ms, gfp_t gfp_mask,
461                                    void (*callback)(int status,
462                                                     struct ib_class_port_info *resp,
463                                                     void *context),
464                                    void *context,
465                                    struct ib_sa_query **sa_query);
466
467 #endif /* IB_SA_H */