include/rdma/ib_sa.h

   1 /*
   2  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Voltaire, Inc.  All rights reserved.
   4  * Copyright (c) 2006 Intel Corporation.  All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  */
  34
  35 #ifndef IB_SA_H
  36 #define IB_SA_H
  37
  38 #include <linux/completion.h>
  39 #include <linux/compiler.h>
  40
  41 #include <linux/atomic.h>
  42 #include <linux/netdevice.h>
  43
  44 #include <rdma/ib_verbs.h>
  45 #include <rdma/ib_mad.h>
  46 #include <rdma/ib_addr.h>
  47 #include <rdma/opa_addr.h>
  48
  49 enum {
  50         IB_SA_CLASS_VERSION             = 2,    /* IB spec version 1.1/1.2 */
  51
  52         IB_SA_METHOD_GET_TABLE          = 0x12,
  53         IB_SA_METHOD_GET_TABLE_RESP     = 0x92,
  54         IB_SA_METHOD_DELETE             = 0x15,
  55         IB_SA_METHOD_DELETE_RESP        = 0x95,
  56         IB_SA_METHOD_GET_MULTI          = 0x14,
  57         IB_SA_METHOD_GET_MULTI_RESP     = 0x94,
  58         IB_SA_METHOD_GET_TRACE_TBL      = 0x13
  59 };
  60
  61 #define OPA_SA_CLASS_VERSION    0x80
  62 enum {
  63         IB_SA_ATTR_CLASS_PORTINFO    = 0x01,
  64         IB_SA_ATTR_NOTICE            = 0x02,
  65         IB_SA_ATTR_INFORM_INFO       = 0x03,
  66         IB_SA_ATTR_NODE_REC          = 0x11,
  67         IB_SA_ATTR_PORT_INFO_REC     = 0x12,
  68         IB_SA_ATTR_SL2VL_REC         = 0x13,
  69         IB_SA_ATTR_SWITCH_REC        = 0x14,
  70         IB_SA_ATTR_LINEAR_FDB_REC    = 0x15,
  71         IB_SA_ATTR_RANDOM_FDB_REC    = 0x16,
  72         IB_SA_ATTR_MCAST_FDB_REC     = 0x17,
  73         IB_SA_ATTR_SM_INFO_REC       = 0x18,
  74         IB_SA_ATTR_LINK_REC          = 0x20,
  75         IB_SA_ATTR_GUID_INFO_REC     = 0x30,
  76         IB_SA_ATTR_SERVICE_REC       = 0x31,
  77         IB_SA_ATTR_PARTITION_REC     = 0x33,
  78         IB_SA_ATTR_PATH_REC          = 0x35,
  79         IB_SA_ATTR_VL_ARB_REC        = 0x36,
  80         IB_SA_ATTR_MC_MEMBER_REC     = 0x38,
  81         IB_SA_ATTR_TRACE_REC         = 0x39,
  82         IB_SA_ATTR_MULTI_PATH_REC    = 0x3a,
  83         IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b,
  84         IB_SA_ATTR_INFORM_INFO_REC   = 0xf3
  85 };
  86
  87 enum ib_sa_selector {
  88         IB_SA_GT   = 0,
  89         IB_SA_LT   = 1,
  90         IB_SA_EQ   = 2,
  91         /*
  92          * The meaning of "best" depends on the attribute: for
  93          * example, for MTU best will return the largest available
  94          * MTU, while for packet life time, best will return the
  95          * smallest available life time.
  96          */
  97         IB_SA_BEST = 3
  98 };
  99
 100 /*
 101  * There are 4 types of join states:
 102  * FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
 103  * The order corresponds to JoinState bits in MCMemberRecord.
 104  */
 105 enum ib_sa_mc_join_states {
 106         FULLMEMBER_JOIN,
 107         NONMEMBER_JOIN,
 108         SENDONLY_NONMEBER_JOIN,
 109         SENDONLY_FULLMEMBER_JOIN,
 110         NUM_JOIN_MEMBERSHIP_TYPES,
 111 };
 112
 113 #define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT       BIT(12)
 114
 115 /*
 116  * Structures for SA records are named "struct ib_sa_xxx_rec."  No
 117  * attempt is made to pack structures to match the physical layout of
 118  * SA records in SA MADs; all packing and unpacking is handled by the
 119  * SA query code.
 120  *
 121  * For a record with structure ib_sa_xxx_rec, the naming convention
 122  * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we
 123  * never use different abbreviations or otherwise change the spelling
 124  * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY).
 125  *
 126  * Reserved rows are indicated with comments to help maintainability.
 127  */
 128
 129 #define IB_SA_PATH_REC_SERVICE_ID                      (IB_SA_COMP_MASK( 0) |\
 130                                                         IB_SA_COMP_MASK( 1))
 131 #define IB_SA_PATH_REC_DGID                             IB_SA_COMP_MASK( 2)
 132 #define IB_SA_PATH_REC_SGID                             IB_SA_COMP_MASK( 3)
 133 #define IB_SA_PATH_REC_DLID                             IB_SA_COMP_MASK( 4)
 134 #define IB_SA_PATH_REC_SLID                             IB_SA_COMP_MASK( 5)
 135 #define IB_SA_PATH_REC_RAW_TRAFFIC                      IB_SA_COMP_MASK( 6)
 136 /* reserved:                                                             7 */
 137 #define IB_SA_PATH_REC_FLOW_LABEL                       IB_SA_COMP_MASK( 8)
 138 #define IB_SA_PATH_REC_HOP_LIMIT                        IB_SA_COMP_MASK( 9)
 139 #define IB_SA_PATH_REC_TRAFFIC_CLASS                    IB_SA_COMP_MASK(10)
 140 #define IB_SA_PATH_REC_REVERSIBLE                       IB_SA_COMP_MASK(11)
 141 #define IB_SA_PATH_REC_NUMB_PATH                        IB_SA_COMP_MASK(12)
 142 #define IB_SA_PATH_REC_PKEY                             IB_SA_COMP_MASK(13)
 143 #define IB_SA_PATH_REC_QOS_CLASS                        IB_SA_COMP_MASK(14)
 144 #define IB_SA_PATH_REC_SL                               IB_SA_COMP_MASK(15)
 145 #define IB_SA_PATH_REC_MTU_SELECTOR                     IB_SA_COMP_MASK(16)
 146 #define IB_SA_PATH_REC_MTU                              IB_SA_COMP_MASK(17)
 147 #define IB_SA_PATH_REC_RATE_SELECTOR                    IB_SA_COMP_MASK(18)
 148 #define IB_SA_PATH_REC_RATE                             IB_SA_COMP_MASK(19)
 149 #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR        IB_SA_COMP_MASK(20)
 150 #define IB_SA_PATH_REC_PACKET_LIFE_TIME                 IB_SA_COMP_MASK(21)
 151 #define IB_SA_PATH_REC_PREFERENCE                       IB_SA_COMP_MASK(22)
 152
 153 enum sa_path_rec_type {
 154         SA_PATH_REC_TYPE_IB,
 155         SA_PATH_REC_TYPE_ROCE_V1,
 156         SA_PATH_REC_TYPE_ROCE_V2,
 157         SA_PATH_REC_TYPE_OPA
 158 };
 159
 160 struct sa_path_rec_ib {
 161         __be16       dlid;
 162         __be16       slid;
 163         u8           raw_traffic;
 164 };
 165
 166 /**
 167  * struct sa_path_rec_roce - RoCE specific portion of the path record entry
 168  * @route_resolved:     When set, it indicates that this route is already
 169  *                      resolved for this path record entry.
 170  * @dmac:               Destination mac address for the given DGID entry
 171  *                      of the path record entry.
 172  */
 173 struct sa_path_rec_roce {
 174         bool    route_resolved;
 175         u8      dmac[ETH_ALEN];
 176 };
 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 */