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         u8           raw_traffic;
 157         /* reserved */
 158         __be32       flow_label;
 159         u8           hop_limit;
 160         u8           traffic_class;
 161         u8           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         u8           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 */