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IB/SA: Rename ib_sa_path_rec to sa_path_rec
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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 #define OPA_SA_CLASS_VERSION    0x80
60 enum {
61         IB_SA_ATTR_CLASS_PORTINFO    = 0x01,
62         IB_SA_ATTR_NOTICE            = 0x02,
63         IB_SA_ATTR_INFORM_INFO       = 0x03,
64         IB_SA_ATTR_NODE_REC          = 0x11,
65         IB_SA_ATTR_PORT_INFO_REC     = 0x12,
66         IB_SA_ATTR_SL2VL_REC         = 0x13,
67         IB_SA_ATTR_SWITCH_REC        = 0x14,
68         IB_SA_ATTR_LINEAR_FDB_REC    = 0x15,
69         IB_SA_ATTR_RANDOM_FDB_REC    = 0x16,
70         IB_SA_ATTR_MCAST_FDB_REC     = 0x17,
71         IB_SA_ATTR_SM_INFO_REC       = 0x18,
72         IB_SA_ATTR_LINK_REC          = 0x20,
73         IB_SA_ATTR_GUID_INFO_REC     = 0x30,
74         IB_SA_ATTR_SERVICE_REC       = 0x31,
75         IB_SA_ATTR_PARTITION_REC     = 0x33,
76         IB_SA_ATTR_PATH_REC          = 0x35,
77         IB_SA_ATTR_VL_ARB_REC        = 0x36,
78         IB_SA_ATTR_MC_MEMBER_REC     = 0x38,
79         IB_SA_ATTR_TRACE_REC         = 0x39,
80         IB_SA_ATTR_MULTI_PATH_REC    = 0x3a,
81         IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
82         IB_SA_ATTR_INFORM_INFO_REC   = 0xf3
83 };
84
85 enum ib_sa_selector {
86         IB_SA_GT   = 0,
87         IB_SA_LT   = 1,
88         IB_SA_EQ   = 2,
89         /*
90          * The meaning of "best" depends on the attribute: for
91          * example, for MTU best will return the largest available
92          * MTU, while for packet life time, best will return the
93          * smallest available life time.
94          */
95         IB_SA_BEST = 3
96 };
97
98 /*
99  * There are 4 types of join states:
100  * FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
101  * The order corresponds to JoinState bits in MCMemberRecord.
102  */
103 enum ib_sa_mc_join_states {
104         FULLMEMBER_JOIN,
105         NONMEMBER_JOIN,
106         SENDONLY_NONMEBER_JOIN,
107         SENDONLY_FULLMEMBER_JOIN,
108         NUM_JOIN_MEMBERSHIP_TYPES,
109 };
110
111 #define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT       BIT(12)
112
113 /*
114  * Structures for SA records are named "struct ib_sa_xxx_rec."  No
115  * attempt is made to pack structures to match the physical layout of
116  * SA records in SA MADs; all packing and unpacking is handled by the
117  * SA query code.
118  *
119  * For a record with structure ib_sa_xxx_rec, the naming convention
120  * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
121  * never use different abbreviations or otherwise change the spelling
122  * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
123  *
124  * Reserved rows are indicated with comments to help maintainability.
125  */
126
127 #define IB_SA_PATH_REC_SERVICE_ID                      (IB_SA_COMP_MASK( 0) |\
128                                                         IB_SA_COMP_MASK( 1))
129 #define IB_SA_PATH_REC_DGID                             IB_SA_COMP_MASK( 2)
130 #define IB_SA_PATH_REC_SGID                             IB_SA_COMP_MASK( 3)
131 #define IB_SA_PATH_REC_DLID                             IB_SA_COMP_MASK( 4)
132 #define IB_SA_PATH_REC_SLID                             IB_SA_COMP_MASK( 5)
133 #define IB_SA_PATH_REC_RAW_TRAFFIC                      IB_SA_COMP_MASK( 6)
134 /* reserved:                                                             7 */
135 #define IB_SA_PATH_REC_FLOW_LABEL                       IB_SA_COMP_MASK( 8)
136 #define IB_SA_PATH_REC_HOP_LIMIT                        IB_SA_COMP_MASK( 9)
137 #define IB_SA_PATH_REC_TRAFFIC_CLASS                    IB_SA_COMP_MASK(10)
138 #define IB_SA_PATH_REC_REVERSIBLE                       IB_SA_COMP_MASK(11)
139 #define IB_SA_PATH_REC_NUMB_PATH                        IB_SA_COMP_MASK(12)
140 #define IB_SA_PATH_REC_PKEY                             IB_SA_COMP_MASK(13)
141 #define IB_SA_PATH_REC_QOS_CLASS                        IB_SA_COMP_MASK(14)
142 #define IB_SA_PATH_REC_SL                               IB_SA_COMP_MASK(15)
143 #define IB_SA_PATH_REC_MTU_SELECTOR                     IB_SA_COMP_MASK(16)
144 #define IB_SA_PATH_REC_MTU                              IB_SA_COMP_MASK(17)
145 #define IB_SA_PATH_REC_RATE_SELECTOR                    IB_SA_COMP_MASK(18)
146 #define IB_SA_PATH_REC_RATE                             IB_SA_COMP_MASK(19)
147 #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR        IB_SA_COMP_MASK(20)
148 #define IB_SA_PATH_REC_PACKET_LIFE_TIME                 IB_SA_COMP_MASK(21)
149 #define IB_SA_PATH_REC_PREFERENCE                       IB_SA_COMP_MASK(22)
150
151 struct sa_path_rec {
152         __be64       service_id;
153         union ib_gid dgid;
154         union ib_gid sgid;
155         __be16       dlid;
156         __be16       slid;
157         u8           raw_traffic;
158         /* reserved */
159         __be32       flow_label;
160         u8           hop_limit;
161         u8           traffic_class;
162         u8           reversible;
163         u8           numb_path;
164         __be16       pkey;
165         __be16       qos_class;
166         u8           sl;
167         u8           mtu_selector;
168         u8           mtu;
169         u8           rate_selector;
170         u8           rate;
171         u8           packet_life_time_selector;
172         u8           packet_life_time;
173         u8           preference;
174         u8           dmac[ETH_ALEN];
175         /* ignored in IB */
176         int          ifindex;
177         /* ignored in IB */
178         struct net  *net;
179         enum ib_gid_type gid_type;
180 };
181
182 static inline struct net_device *ib_get_ndev_from_path(struct sa_path_rec *rec)
183 {
184         return rec->net ? dev_get_by_index(rec->net, rec->ifindex) : NULL;
185 }
186
187 #define IB_SA_MCMEMBER_REC_MGID                         IB_SA_COMP_MASK( 0)
188 #define IB_SA_MCMEMBER_REC_PORT_GID                     IB_SA_COMP_MASK( 1)
189 #define IB_SA_MCMEMBER_REC_QKEY                         IB_SA_COMP_MASK( 2)
190 #define IB_SA_MCMEMBER_REC_MLID                         IB_SA_COMP_MASK( 3)
191 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR                 IB_SA_COMP_MASK( 4)
192 #define IB_SA_MCMEMBER_REC_MTU                          IB_SA_COMP_MASK( 5)
193 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS                IB_SA_COMP_MASK( 6)
194 #define IB_SA_MCMEMBER_REC_PKEY                         IB_SA_COMP_MASK( 7)
195 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR                IB_SA_COMP_MASK( 8)
196 #define IB_SA_MCMEMBER_REC_RATE                         IB_SA_COMP_MASK( 9)
197 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(10)
198 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME             IB_SA_COMP_MASK(11)
199 #define IB_SA_MCMEMBER_REC_SL                           IB_SA_COMP_MASK(12)
200 #define IB_SA_MCMEMBER_REC_FLOW_LABEL                   IB_SA_COMP_MASK(13)
201 #define IB_SA_MCMEMBER_REC_HOP_LIMIT                    IB_SA_COMP_MASK(14)
202 #define IB_SA_MCMEMBER_REC_SCOPE                        IB_SA_COMP_MASK(15)
203 #define IB_SA_MCMEMBER_REC_JOIN_STATE                   IB_SA_COMP_MASK(16)
204 #define IB_SA_MCMEMBER_REC_PROXY_JOIN                   IB_SA_COMP_MASK(17)
205
206 struct ib_sa_mcmember_rec {
207         union ib_gid mgid;
208         union ib_gid port_gid;
209         __be32       qkey;
210         __be16       mlid;
211         u8           mtu_selector;
212         u8           mtu;
213         u8           traffic_class;
214         __be16       pkey;
215         u8           rate_selector;
216         u8           rate;
217         u8           packet_life_time_selector;
218         u8           packet_life_time;
219         u8           sl;
220         __be32       flow_label;
221         u8           hop_limit;
222         u8           scope;
223         u8           join_state;
224         u8           proxy_join;
225 };
226
227 /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1  */
228 #define IB_SA_SERVICE_REC_SERVICE_ID                    IB_SA_COMP_MASK( 0)
229 #define IB_SA_SERVICE_REC_SERVICE_GID                   IB_SA_COMP_MASK( 1)
230 #define IB_SA_SERVICE_REC_SERVICE_PKEY                  IB_SA_COMP_MASK( 2)
231 /* reserved:                                                             3 */
232 #define IB_SA_SERVICE_REC_SERVICE_LEASE                 IB_SA_COMP_MASK( 4)
233 #define IB_SA_SERVICE_REC_SERVICE_KEY                   IB_SA_COMP_MASK( 5)
234 #define IB_SA_SERVICE_REC_SERVICE_NAME                  IB_SA_COMP_MASK( 6)
235 #define IB_SA_SERVICE_REC_SERVICE_DATA8_0               IB_SA_COMP_MASK( 7)
236 #define IB_SA_SERVICE_REC_SERVICE_DATA8_1               IB_SA_COMP_MASK( 8)
237 #define IB_SA_SERVICE_REC_SERVICE_DATA8_2               IB_SA_COMP_MASK( 9)
238 #define IB_SA_SERVICE_REC_SERVICE_DATA8_3               IB_SA_COMP_MASK(10)
239 #define IB_SA_SERVICE_REC_SERVICE_DATA8_4               IB_SA_COMP_MASK(11)
240 #define IB_SA_SERVICE_REC_SERVICE_DATA8_5               IB_SA_COMP_MASK(12)
241 #define IB_SA_SERVICE_REC_SERVICE_DATA8_6               IB_SA_COMP_MASK(13)
242 #define IB_SA_SERVICE_REC_SERVICE_DATA8_7               IB_SA_COMP_MASK(14)
243 #define IB_SA_SERVICE_REC_SERVICE_DATA8_8               IB_SA_COMP_MASK(15)
244 #define IB_SA_SERVICE_REC_SERVICE_DATA8_9               IB_SA_COMP_MASK(16)
245 #define IB_SA_SERVICE_REC_SERVICE_DATA8_10              IB_SA_COMP_MASK(17)
246 #define IB_SA_SERVICE_REC_SERVICE_DATA8_11              IB_SA_COMP_MASK(18)
247 #define IB_SA_SERVICE_REC_SERVICE_DATA8_12              IB_SA_COMP_MASK(19)
248 #define IB_SA_SERVICE_REC_SERVICE_DATA8_13              IB_SA_COMP_MASK(20)
249 #define IB_SA_SERVICE_REC_SERVICE_DATA8_14              IB_SA_COMP_MASK(21)
250 #define IB_SA_SERVICE_REC_SERVICE_DATA8_15              IB_SA_COMP_MASK(22)
251 #define IB_SA_SERVICE_REC_SERVICE_DATA16_0              IB_SA_COMP_MASK(23)
252 #define IB_SA_SERVICE_REC_SERVICE_DATA16_1              IB_SA_COMP_MASK(24)
253 #define IB_SA_SERVICE_REC_SERVICE_DATA16_2              IB_SA_COMP_MASK(25)
254 #define IB_SA_SERVICE_REC_SERVICE_DATA16_3              IB_SA_COMP_MASK(26)
255 #define IB_SA_SERVICE_REC_SERVICE_DATA16_4              IB_SA_COMP_MASK(27)
256 #define IB_SA_SERVICE_REC_SERVICE_DATA16_5              IB_SA_COMP_MASK(28)
257 #define IB_SA_SERVICE_REC_SERVICE_DATA16_6              IB_SA_COMP_MASK(29)
258 #define IB_SA_SERVICE_REC_SERVICE_DATA16_7              IB_SA_COMP_MASK(30)
259 #define IB_SA_SERVICE_REC_SERVICE_DATA32_0              IB_SA_COMP_MASK(31)
260 #define IB_SA_SERVICE_REC_SERVICE_DATA32_1              IB_SA_COMP_MASK(32)
261 #define IB_SA_SERVICE_REC_SERVICE_DATA32_2              IB_SA_COMP_MASK(33)
262 #define IB_SA_SERVICE_REC_SERVICE_DATA32_3              IB_SA_COMP_MASK(34)
263 #define IB_SA_SERVICE_REC_SERVICE_DATA64_0              IB_SA_COMP_MASK(35)
264 #define IB_SA_SERVICE_REC_SERVICE_DATA64_1              IB_SA_COMP_MASK(36)
265
266 #define IB_DEFAULT_SERVICE_LEASE        0xFFFFFFFF
267
268 struct ib_sa_service_rec {
269         u64             id;
270         union ib_gid    gid;
271         __be16          pkey;
272         /* reserved */
273         u32             lease;
274         u8              key[16];
275         u8              name[64];
276         u8              data8[16];
277         u16             data16[8];
278         u32             data32[4];
279         u64             data64[2];
280 };
281
282 #define IB_SA_GUIDINFO_REC_LID          IB_SA_COMP_MASK(0)
283 #define IB_SA_GUIDINFO_REC_BLOCK_NUM    IB_SA_COMP_MASK(1)
284 #define IB_SA_GUIDINFO_REC_RES1         IB_SA_COMP_MASK(2)
285 #define IB_SA_GUIDINFO_REC_RES2         IB_SA_COMP_MASK(3)
286 #define IB_SA_GUIDINFO_REC_GID0         IB_SA_COMP_MASK(4)
287 #define IB_SA_GUIDINFO_REC_GID1         IB_SA_COMP_MASK(5)
288 #define IB_SA_GUIDINFO_REC_GID2         IB_SA_COMP_MASK(6)
289 #define IB_SA_GUIDINFO_REC_GID3         IB_SA_COMP_MASK(7)
290 #define IB_SA_GUIDINFO_REC_GID4         IB_SA_COMP_MASK(8)
291 #define IB_SA_GUIDINFO_REC_GID5         IB_SA_COMP_MASK(9)
292 #define IB_SA_GUIDINFO_REC_GID6         IB_SA_COMP_MASK(10)
293 #define IB_SA_GUIDINFO_REC_GID7         IB_SA_COMP_MASK(11)
294
295 struct ib_sa_guidinfo_rec {
296         __be16  lid;
297         u8      block_num;
298         /* reserved */
299         u8      res1;
300         __be32  res2;
301         u8      guid_info_list[64];
302 };
303
304 struct ib_sa_client {
305         atomic_t users;
306         struct completion comp;
307 };
308
309 /**
310  * ib_sa_register_client - Register an SA client.
311  */
312 void ib_sa_register_client(struct ib_sa_client *client);
313
314 /**
315  * ib_sa_unregister_client - Deregister an SA client.
316  * @client: Client object to deregister.
317  */
318 void ib_sa_unregister_client(struct ib_sa_client *client);
319
320 struct ib_sa_query;
321
322 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
323
324 int ib_sa_path_rec_get(struct ib_sa_client *client,
325                        struct ib_device *device, u8 port_num,
326                        struct sa_path_rec *rec,
327                        ib_sa_comp_mask comp_mask,
328                        int timeout_ms, gfp_t gfp_mask,
329                        void (*callback)(int status,
330                                         struct sa_path_rec *resp,
331                                         void *context),
332                        void *context,
333                        struct ib_sa_query **query);
334
335 int ib_sa_service_rec_query(struct ib_sa_client *client,
336                          struct ib_device *device, u8 port_num,
337                          u8 method,
338                          struct ib_sa_service_rec *rec,
339                          ib_sa_comp_mask comp_mask,
340                          int timeout_ms, gfp_t gfp_mask,
341                          void (*callback)(int status,
342                                           struct ib_sa_service_rec *resp,
343                                           void *context),
344                          void *context,
345                          struct ib_sa_query **sa_query);
346
347 struct ib_sa_multicast {
348         struct ib_sa_mcmember_rec rec;
349         ib_sa_comp_mask         comp_mask;
350         int                     (*callback)(int status,
351                                             struct ib_sa_multicast *multicast);
352         void                    *context;
353 };
354
355 /**
356  * ib_sa_join_multicast - Initiates a join request to the specified multicast
357  *   group.
358  * @client: SA client
359  * @device: Device associated with the multicast group.
360  * @port_num: Port on the specified device to associate with the multicast
361  *   group.
362  * @rec: SA multicast member record specifying group attributes.
363  * @comp_mask: Component mask indicating which group attributes of %rec are
364  *   valid.
365  * @gfp_mask: GFP mask for memory allocations.
366  * @callback: User callback invoked once the join operation completes.
367  * @context: User specified context stored with the ib_sa_multicast structure.
368  *
369  * This call initiates a multicast join request with the SA for the specified
370  * multicast group.  If the join operation is started successfully, it returns
371  * an ib_sa_multicast structure that is used to track the multicast operation.
372  * Users must free this structure by calling ib_free_multicast, even if the
373  * join operation later fails.  (The callback status is non-zero.)
374  *
375  * If the join operation fails; status will be non-zero, with the following
376  * failures possible:
377  * -ETIMEDOUT: The request timed out.
378  * -EIO: An error occurred sending the query.
379  * -EINVAL: The MCMemberRecord values differed from the existing group's.
380  * -ENETRESET: Indicates that an fatal error has occurred on the multicast
381  *   group, and the user must rejoin the group to continue using it.
382  */
383 struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
384                                              struct ib_device *device, u8 port_num,
385                                              struct ib_sa_mcmember_rec *rec,
386                                              ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
387                                              int (*callback)(int status,
388                                                              struct ib_sa_multicast
389                                                                     *multicast),
390                                              void *context);
391
392 /**
393  * ib_free_multicast - Frees the multicast tracking structure, and releases
394  *    any reference on the multicast group.
395  * @multicast: Multicast tracking structure allocated by ib_join_multicast.
396  *
397  * This call blocks until the multicast identifier is destroyed.  It may
398  * not be called from within the multicast callback; however, returning a non-
399  * zero value from the callback will result in destroying the multicast
400  * tracking structure.
401  */
402 void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
403
404 /**
405  * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
406  *   returns it if found.
407  * @device: Device associated with the multicast group.
408  * @port_num: Port on the specified device to associate with the multicast
409  *   group.
410  * @mgid: MGID of multicast group.
411  * @rec: Location to copy SA multicast member record.
412  */
413 int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num,
414                            union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
415
416 /**
417  * ib_init_ah_from_mcmember - Initialize address handle attributes based on
418  * an SA multicast member record.
419  */
420 int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
421                              struct ib_sa_mcmember_rec *rec,
422                              struct net_device *ndev,
423                              enum ib_gid_type gid_type,
424                              struct rdma_ah_attr *ah_attr);
425
426 /**
427  * ib_init_ah_from_path - Initialize address handle attributes based on an SA
428  *   path record.
429  */
430 int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
431                          struct sa_path_rec *rec,
432                          struct rdma_ah_attr *ah_attr);
433
434 /**
435  * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
436  * to IB MAD wire format.
437  */
438 void ib_sa_pack_path(struct sa_path_rec *rec, void *attribute);
439
440 /**
441  * ib_sa_unpack_path - Convert a path record from MAD format to struct
442  * ib_sa_path_rec.
443  */
444 void ib_sa_unpack_path(void *attribute, struct sa_path_rec *rec);
445
446 /* Support GuidInfoRecord */
447 int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
448                               struct ib_device *device, u8 port_num,
449                               struct ib_sa_guidinfo_rec *rec,
450                               ib_sa_comp_mask comp_mask, u8 method,
451                               int timeout_ms, gfp_t gfp_mask,
452                               void (*callback)(int status,
453                                                struct ib_sa_guidinfo_rec *resp,
454                                                void *context),
455                               void *context,
456                               struct ib_sa_query **sa_query);
457
458 bool ib_sa_sendonly_fullmem_support(struct ib_sa_client *client,
459                                     struct ib_device *device,
460                                     u8 port_num);
461
462 #endif /* IB_SA_H */