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TOMOYO Linux Cross Reference
Linux/include/rdma/ib_sa.h

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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 #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 };
177 
178 struct sa_path_rec_opa {
179         __be32       dlid;
180         __be32       slid;
181         u8           raw_traffic;
182         u8           l2_8B;
183         u8           l2_10B;
184         u8           l2_9B;
185         u8           l2_16B;
186         u8           qos_type;
187         u8           qos_priority;
188 };
189 
190 struct sa_path_rec {
191         union ib_gid dgid;
192         union ib_gid sgid;
193         __be64       service_id;
194         /* reserved */
195         __be32       flow_label;
196         u8           hop_limit;
197         u8           traffic_class;
198         u8           reversible;
199         u8           numb_path;
200         __be16       pkey;
201         __be16       qos_class;
202         u8           sl;
203         u8           mtu_selector;
204         u8           mtu;
205         u8           rate_selector;
206         u8           rate;
207         u8           packet_life_time_selector;
208         u8           packet_life_time;
209         u8           preference;
210         union {
211                 struct sa_path_rec_ib ib;
212                 struct sa_path_rec_roce roce;
213                 struct sa_path_rec_opa opa;
214         };
215         enum sa_path_rec_type rec_type;
216 };
217 
218 static inline enum ib_gid_type
219                 sa_conv_pathrec_to_gid_type(struct sa_path_rec *rec)
220 {
221         switch (rec->rec_type) {
222         case SA_PATH_REC_TYPE_ROCE_V1:
223                 return IB_GID_TYPE_ROCE;
224         case SA_PATH_REC_TYPE_ROCE_V2:
225                 return IB_GID_TYPE_ROCE_UDP_ENCAP;
226         default:
227                 return IB_GID_TYPE_IB;
228         }
229 }
230 
231 static inline enum sa_path_rec_type
232                 sa_conv_gid_to_pathrec_type(enum ib_gid_type type)
233 {
234         switch (type) {
235         case IB_GID_TYPE_ROCE:
236                 return SA_PATH_REC_TYPE_ROCE_V1;
237         case IB_GID_TYPE_ROCE_UDP_ENCAP:
238                 return SA_PATH_REC_TYPE_ROCE_V2;
239         default:
240                 return SA_PATH_REC_TYPE_IB;
241         }
242 }
243 
244 static inline void path_conv_opa_to_ib(struct sa_path_rec *ib,
245                                        struct sa_path_rec *opa)
246 {
247         if ((be32_to_cpu(opa->opa.dlid) >=
248              be16_to_cpu(IB_MULTICAST_LID_BASE)) ||
249             (be32_to_cpu(opa->opa.slid) >=
250              be16_to_cpu(IB_MULTICAST_LID_BASE))) {
251                 /* Create OPA GID and zero out the LID */
252                 ib->dgid.global.interface_id
253                                 = OPA_MAKE_ID(be32_to_cpu(opa->opa.dlid));
254                 ib->dgid.global.subnet_prefix
255                                 = opa->dgid.global.subnet_prefix;
256                 ib->sgid.global.interface_id
257                                 = OPA_MAKE_ID(be32_to_cpu(opa->opa.slid));
258                 ib->dgid.global.subnet_prefix
259                                 = opa->dgid.global.subnet_prefix;
260                 ib->ib.dlid     = 0;
261 
262                 ib->ib.slid     = 0;
263         } else {
264                 ib->ib.dlid     = htons(ntohl(opa->opa.dlid));
265                 ib->ib.slid     = htons(ntohl(opa->opa.slid));
266         }
267         ib->service_id          = opa->service_id;
268         ib->ib.raw_traffic      = opa->opa.raw_traffic;
269 }
270 
271 static inline void path_conv_ib_to_opa(struct sa_path_rec *opa,
272                                        struct sa_path_rec *ib)
273 {
274         __be32 slid, dlid;
275 
276         if ((ib_is_opa_gid(&ib->sgid)) ||
277             (ib_is_opa_gid(&ib->dgid))) {
278                 slid = htonl(opa_get_lid_from_gid(&ib->sgid));
279                 dlid = htonl(opa_get_lid_from_gid(&ib->dgid));
280         } else {
281                 slid = htonl(ntohs(ib->ib.slid));
282                 dlid = htonl(ntohs(ib->ib.dlid));
283         }
284         opa->opa.slid           = slid;
285         opa->opa.dlid           = dlid;
286         opa->service_id         = ib->service_id;
287         opa->opa.raw_traffic    = ib->ib.raw_traffic;
288 }
289 
290 /* Convert from OPA to IB path record */
291 static inline void sa_convert_path_opa_to_ib(struct sa_path_rec *dest,
292                                              struct sa_path_rec *src)
293 {
294         if (src->rec_type != SA_PATH_REC_TYPE_OPA)
295                 return;
296 
297         *dest = *src;
298         dest->rec_type = SA_PATH_REC_TYPE_IB;
299         path_conv_opa_to_ib(dest, src);
300 }
301 
302 /* Convert from IB to OPA path record */
303 static inline void sa_convert_path_ib_to_opa(struct sa_path_rec *dest,
304                                              struct sa_path_rec *src)
305 {
306         if (src->rec_type != SA_PATH_REC_TYPE_IB)
307                 return;
308 
309         /* Do a structure copy and overwrite the relevant fields */
310         *dest = *src;
311         dest->rec_type = SA_PATH_REC_TYPE_OPA;
312         path_conv_ib_to_opa(dest, src);
313 }
314 
315 #define IB_SA_MCMEMBER_REC_MGID                         IB_SA_COMP_MASK( 0)
316 #define IB_SA_MCMEMBER_REC_PORT_GID                     IB_SA_COMP_MASK( 1)
317 #define IB_SA_MCMEMBER_REC_QKEY                         IB_SA_COMP_MASK( 2)
318 #define IB_SA_MCMEMBER_REC_MLID                         IB_SA_COMP_MASK( 3)
319 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR                 IB_SA_COMP_MASK( 4)
320 #define IB_SA_MCMEMBER_REC_MTU                          IB_SA_COMP_MASK( 5)
321 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS                IB_SA_COMP_MASK( 6)
322 #define IB_SA_MCMEMBER_REC_PKEY                         IB_SA_COMP_MASK( 7)
323 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR                IB_SA_COMP_MASK( 8)
324 #define IB_SA_MCMEMBER_REC_RATE                         IB_SA_COMP_MASK( 9)
325 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR    IB_SA_COMP_MASK(10)
326 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME             IB_SA_COMP_MASK(11)
327 #define IB_SA_MCMEMBER_REC_SL                           IB_SA_COMP_MASK(12)
328 #define IB_SA_MCMEMBER_REC_FLOW_LABEL                   IB_SA_COMP_MASK(13)
329 #define IB_SA_MCMEMBER_REC_HOP_LIMIT                    IB_SA_COMP_MASK(14)
330 #define IB_SA_MCMEMBER_REC_SCOPE                        IB_SA_COMP_MASK(15)
331 #define IB_SA_MCMEMBER_REC_JOIN_STATE                   IB_SA_COMP_MASK(16)
332 #define IB_SA_MCMEMBER_REC_PROXY_JOIN                   IB_SA_COMP_MASK(17)
333 
334 struct ib_sa_mcmember_rec {
335         union ib_gid mgid;
336         union ib_gid port_gid;
337         __be32       qkey;
338         __be16       mlid;
339         u8           mtu_selector;
340         u8           mtu;
341         u8           traffic_class;
342         __be16       pkey;
343         u8           rate_selector;
344         u8           rate;
345         u8           packet_life_time_selector;
346         u8           packet_life_time;
347         u8           sl;
348         __be32       flow_label;
349         u8           hop_limit;
350         u8           scope;
351         u8           join_state;
352         u8           proxy_join;
353 };
354 
355 /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1  */
356 #define IB_SA_SERVICE_REC_SERVICE_ID                    IB_SA_COMP_MASK( 0)
357 #define IB_SA_SERVICE_REC_SERVICE_GID                   IB_SA_COMP_MASK( 1)
358 #define IB_SA_SERVICE_REC_SERVICE_PKEY                  IB_SA_COMP_MASK( 2)
359 /* reserved:                                                             3 */
360 #define IB_SA_SERVICE_REC_SERVICE_LEASE                 IB_SA_COMP_MASK( 4)
361 #define IB_SA_SERVICE_REC_SERVICE_KEY                   IB_SA_COMP_MASK( 5)
362 #define IB_SA_SERVICE_REC_SERVICE_NAME                  IB_SA_COMP_MASK( 6)
363 #define IB_SA_SERVICE_REC_SERVICE_DATA8_0               IB_SA_COMP_MASK( 7)
364 #define IB_SA_SERVICE_REC_SERVICE_DATA8_1               IB_SA_COMP_MASK( 8)
365 #define IB_SA_SERVICE_REC_SERVICE_DATA8_2               IB_SA_COMP_MASK( 9)
366 #define IB_SA_SERVICE_REC_SERVICE_DATA8_3               IB_SA_COMP_MASK(10)
367 #define IB_SA_SERVICE_REC_SERVICE_DATA8_4               IB_SA_COMP_MASK(11)
368 #define IB_SA_SERVICE_REC_SERVICE_DATA8_5               IB_SA_COMP_MASK(12)
369 #define IB_SA_SERVICE_REC_SERVICE_DATA8_6               IB_SA_COMP_MASK(13)
370 #define IB_SA_SERVICE_REC_SERVICE_DATA8_7               IB_SA_COMP_MASK(14)
371 #define IB_SA_SERVICE_REC_SERVICE_DATA8_8               IB_SA_COMP_MASK(15)
372 #define IB_SA_SERVICE_REC_SERVICE_DATA8_9               IB_SA_COMP_MASK(16)
373 #define IB_SA_SERVICE_REC_SERVICE_DATA8_10              IB_SA_COMP_MASK(17)
374 #define IB_SA_SERVICE_REC_SERVICE_DATA8_11              IB_SA_COMP_MASK(18)
375 #define IB_SA_SERVICE_REC_SERVICE_DATA8_12              IB_SA_COMP_MASK(19)
376 #define IB_SA_SERVICE_REC_SERVICE_DATA8_13              IB_SA_COMP_MASK(20)
377 #define IB_SA_SERVICE_REC_SERVICE_DATA8_14              IB_SA_COMP_MASK(21)
378 #define IB_SA_SERVICE_REC_SERVICE_DATA8_15              IB_SA_COMP_MASK(22)
379 #define IB_SA_SERVICE_REC_SERVICE_DATA16_0              IB_SA_COMP_MASK(23)
380 #define IB_SA_SERVICE_REC_SERVICE_DATA16_1              IB_SA_COMP_MASK(24)
381 #define IB_SA_SERVICE_REC_SERVICE_DATA16_2              IB_SA_COMP_MASK(25)
382 #define IB_SA_SERVICE_REC_SERVICE_DATA16_3              IB_SA_COMP_MASK(26)
383 #define IB_SA_SERVICE_REC_SERVICE_DATA16_4              IB_SA_COMP_MASK(27)
384 #define IB_SA_SERVICE_REC_SERVICE_DATA16_5              IB_SA_COMP_MASK(28)
385 #define IB_SA_SERVICE_REC_SERVICE_DATA16_6              IB_SA_COMP_MASK(29)
386 #define IB_SA_SERVICE_REC_SERVICE_DATA16_7              IB_SA_COMP_MASK(30)
387 #define IB_SA_SERVICE_REC_SERVICE_DATA32_0              IB_SA_COMP_MASK(31)
388 #define IB_SA_SERVICE_REC_SERVICE_DATA32_1              IB_SA_COMP_MASK(32)
389 #define IB_SA_SERVICE_REC_SERVICE_DATA32_2              IB_SA_COMP_MASK(33)
390 #define IB_SA_SERVICE_REC_SERVICE_DATA32_3              IB_SA_COMP_MASK(34)
391 #define IB_SA_SERVICE_REC_SERVICE_DATA64_0              IB_SA_COMP_MASK(35)
392 #define IB_SA_SERVICE_REC_SERVICE_DATA64_1              IB_SA_COMP_MASK(36)
393 
394 #define IB_DEFAULT_SERVICE_LEASE        0xFFFFFFFF
395 
396 struct ib_sa_service_rec {
397         u64             id;
398         union ib_gid    gid;
399         __be16          pkey;
400         /* reserved */
401         u32             lease;
402         u8              key[16];
403         u8              name[64];
404         u8              data8[16];
405         u16             data16[8];
406         u32             data32[4];
407         u64             data64[2];
408 };
409 
410 #define IB_SA_GUIDINFO_REC_LID          IB_SA_COMP_MASK(0)
411 #define IB_SA_GUIDINFO_REC_BLOCK_NUM    IB_SA_COMP_MASK(1)
412 #define IB_SA_GUIDINFO_REC_RES1         IB_SA_COMP_MASK(2)
413 #define IB_SA_GUIDINFO_REC_RES2         IB_SA_COMP_MASK(3)
414 #define IB_SA_GUIDINFO_REC_GID0         IB_SA_COMP_MASK(4)
415 #define IB_SA_GUIDINFO_REC_GID1         IB_SA_COMP_MASK(5)
416 #define IB_SA_GUIDINFO_REC_GID2         IB_SA_COMP_MASK(6)
417 #define IB_SA_GUIDINFO_REC_GID3         IB_SA_COMP_MASK(7)
418 #define IB_SA_GUIDINFO_REC_GID4         IB_SA_COMP_MASK(8)
419 #define IB_SA_GUIDINFO_REC_GID5         IB_SA_COMP_MASK(9)
420 #define IB_SA_GUIDINFO_REC_GID6         IB_SA_COMP_MASK(10)
421 #define IB_SA_GUIDINFO_REC_GID7         IB_SA_COMP_MASK(11)
422 
423 struct ib_sa_guidinfo_rec {
424         __be16  lid;
425         u8      block_num;
426         /* reserved */
427         u8      res1;
428         __be32  res2;
429         u8      guid_info_list[64];
430 };
431 
432 struct ib_sa_client {
433         atomic_t users;
434         struct completion comp;
435 };
436 
437 /**
438  * ib_sa_register_client - Register an SA client.
439  */
440 void ib_sa_register_client(struct ib_sa_client *client);
441 
442 /**
443  * ib_sa_unregister_client - Deregister an SA client.
444  * @client: Client object to deregister.
445  */
446 void ib_sa_unregister_client(struct ib_sa_client *client);
447 
448 struct ib_sa_query;
449 
450 void ib_sa_cancel_query(int id, struct ib_sa_query *query);
451 
452 int ib_sa_path_rec_get(struct ib_sa_client *client, struct ib_device *device,
453                        u8 port_num, struct sa_path_rec *rec,
454                        ib_sa_comp_mask comp_mask, unsigned long timeout_ms,
455                        gfp_t gfp_mask,
456                        void (*callback)(int status, struct sa_path_rec *resp,
457                                         void *context),
458                        void *context, struct ib_sa_query **query);
459 
460 int ib_sa_service_rec_query(struct ib_sa_client *client,
461                             struct ib_device *device, u8 port_num, u8 method,
462                             struct ib_sa_service_rec *rec,
463                             ib_sa_comp_mask comp_mask, unsigned long timeout_ms,
464                             gfp_t gfp_mask,
465                             void (*callback)(int status,
466                                              struct ib_sa_service_rec *resp,
467                                              void *context),
468                             void *context, struct ib_sa_query **sa_query);
469 
470 struct ib_sa_multicast {
471         struct ib_sa_mcmember_rec rec;
472         ib_sa_comp_mask         comp_mask;
473         int                     (*callback)(int status,
474                                             struct ib_sa_multicast *multicast);
475         void                    *context;
476 };
477 
478 /**
479  * ib_sa_join_multicast - Initiates a join request to the specified multicast
480  *   group.
481  * @client: SA client
482  * @device: Device associated with the multicast group.
483  * @port_num: Port on the specified device to associate with the multicast
484  *   group.
485  * @rec: SA multicast member record specifying group attributes.
486  * @comp_mask: Component mask indicating which group attributes of %rec are
487  *   valid.
488  * @gfp_mask: GFP mask for memory allocations.
489  * @callback: User callback invoked once the join operation completes.
490  * @context: User specified context stored with the ib_sa_multicast structure.
491  *
492  * This call initiates a multicast join request with the SA for the specified
493  * multicast group.  If the join operation is started successfully, it returns
494  * an ib_sa_multicast structure that is used to track the multicast operation.
495  * Users must free this structure by calling ib_free_multicast, even if the
496  * join operation later fails.  (The callback status is non-zero.)
497  *
498  * If the join operation fails; status will be non-zero, with the following
499  * failures possible:
500  * -ETIMEDOUT: The request timed out.
501  * -EIO: An error occurred sending the query.
502  * -EINVAL: The MCMemberRecord values differed from the existing group's.
503  * -ENETRESET: Indicates that an fatal error has occurred on the multicast
504  *   group, and the user must rejoin the group to continue using it.
505  */
506 struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client,
507                                              struct ib_device *device, u8 port_num,
508                                              struct ib_sa_mcmember_rec *rec,
509                                              ib_sa_comp_mask comp_mask, gfp_t gfp_mask,
510                                              int (*callback)(int status,
511                                                              struct ib_sa_multicast
512                                                                     *multicast),
513                                              void *context);
514 
515 /**
516  * ib_free_multicast - Frees the multicast tracking structure, and releases
517  *    any reference on the multicast group.
518  * @multicast: Multicast tracking structure allocated by ib_join_multicast.
519  *
520  * This call blocks until the multicast identifier is destroyed.  It may
521  * not be called from within the multicast callback; however, returning a non-
522  * zero value from the callback will result in destroying the multicast
523  * tracking structure.
524  */
525 void ib_sa_free_multicast(struct ib_sa_multicast *multicast);
526 
527 /**
528  * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and
529  *   returns it if found.
530  * @device: Device associated with the multicast group.
531  * @port_num: Port on the specified device to associate with the multicast
532  *   group.
533  * @mgid: MGID of multicast group.
534  * @rec: Location to copy SA multicast member record.
535  */
536 int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num,
537                            union ib_gid *mgid, struct ib_sa_mcmember_rec *rec);
538 
539 /**
540  * ib_init_ah_from_mcmember - Initialize address handle attributes based on
541  * an SA multicast member record.
542  */
543 int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
544                              struct ib_sa_mcmember_rec *rec,
545                              struct net_device *ndev,
546                              enum ib_gid_type gid_type,
547                              struct rdma_ah_attr *ah_attr);
548 
549 int ib_init_ah_attr_from_path(struct ib_device *device, u8 port_num,
550                               struct sa_path_rec *rec,
551                               struct rdma_ah_attr *ah_attr,
552                               const struct ib_gid_attr *sgid_attr);
553 
554 /**
555  * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec
556  * to IB MAD wire format.
557  */
558 void ib_sa_pack_path(struct sa_path_rec *rec, void *attribute);
559 
560 /**
561  * ib_sa_unpack_path - Convert a path record from MAD format to struct
562  * ib_sa_path_rec.
563  */
564 void ib_sa_unpack_path(void *attribute, struct sa_path_rec *rec);
565 
566 /* Support GuidInfoRecord */
567 int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
568                               struct ib_device *device, u8 port_num,
569                               struct ib_sa_guidinfo_rec *rec,
570                               ib_sa_comp_mask comp_mask, u8 method,
571                               unsigned long timeout_ms, gfp_t gfp_mask,
572                               void (*callback)(int status,
573                                                struct ib_sa_guidinfo_rec *resp,
574                                                void *context),
575                               void *context, struct ib_sa_query **sa_query);
576 
577 bool ib_sa_sendonly_fullmem_support(struct ib_sa_client *client,
578                                     struct ib_device *device,
579                                     u8 port_num);
580 
581 static inline bool sa_path_is_roce(struct sa_path_rec *rec)
582 {
583         return ((rec->rec_type == SA_PATH_REC_TYPE_ROCE_V1) ||
584                 (rec->rec_type == SA_PATH_REC_TYPE_ROCE_V2));
585 }
586 
587 static inline bool sa_path_is_opa(struct sa_path_rec *rec)
588 {
589         return (rec->rec_type == SA_PATH_REC_TYPE_OPA);
590 }
591 
592 static inline void sa_path_set_slid(struct sa_path_rec *rec, u32 slid)
593 {
594         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
595                 rec->ib.slid = cpu_to_be16(slid);
596         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
597                 rec->opa.slid = cpu_to_be32(slid);
598 }
599 
600 static inline void sa_path_set_dlid(struct sa_path_rec *rec, u32 dlid)
601 {
602         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
603                 rec->ib.dlid = cpu_to_be16(dlid);
604         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
605                 rec->opa.dlid = cpu_to_be32(dlid);
606 }
607 
608 static inline void sa_path_set_raw_traffic(struct sa_path_rec *rec,
609                                            u8 raw_traffic)
610 {
611         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
612                 rec->ib.raw_traffic = raw_traffic;
613         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
614                 rec->opa.raw_traffic = raw_traffic;
615 }
616 
617 static inline __be32 sa_path_get_slid(struct sa_path_rec *rec)
618 {
619         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
620                 return htonl(ntohs(rec->ib.slid));
621         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
622                 return rec->opa.slid;
623         return 0;
624 }
625 
626 static inline __be32 sa_path_get_dlid(struct sa_path_rec *rec)
627 {
628         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
629                 return htonl(ntohs(rec->ib.dlid));
630         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
631                 return rec->opa.dlid;
632         return 0;
633 }
634 
635 static inline u8 sa_path_get_raw_traffic(struct sa_path_rec *rec)
636 {
637         if (rec->rec_type == SA_PATH_REC_TYPE_IB)
638                 return rec->ib.raw_traffic;
639         else if (rec->rec_type == SA_PATH_REC_TYPE_OPA)
640                 return rec->opa.raw_traffic;
641         return 0;
642 }
643 
644 static inline void sa_path_set_dmac(struct sa_path_rec *rec, u8 *dmac)
645 {
646         if (sa_path_is_roce(rec))
647                 memcpy(rec->roce.dmac, dmac, ETH_ALEN);
648 }
649 
650 static inline void sa_path_set_dmac_zero(struct sa_path_rec *rec)
651 {
652         if (sa_path_is_roce(rec))
653                 eth_zero_addr(rec->roce.dmac);
654 }
655 
656 static inline u8 *sa_path_get_dmac(struct sa_path_rec *rec)
657 {
658         if (sa_path_is_roce(rec))
659                 return rec->roce.dmac;
660         return NULL;
661 }
662 #endif /* IB_SA_H */
663 

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