1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2 /* 3 * Copyright (c) 2004 Topspin Communications. All rights reserved. 4 * Copyright (c) 2005 Voltaire, Inc. All rights reserved. 5 * Copyright (c) 2006 Intel Corporation. All rights reserved. 6 */ 7 8 #ifndef IB_SA_H 9 #define IB_SA_H 10 11 #include <linux/completion.h> 12 #include <linux/compiler.h> 13 14 #include <linux/atomic.h> 15 #include <linux/netdevice.h> 16 17 #include <rdma/ib_verbs.h> 18 #include <rdma/ib_mad.h> 19 #include <rdma/ib_addr.h> 20 #include <rdma/opa_addr.h> 21 22 enum { 23 IB_SA_CLASS_VERSION = 2, /* IB spec version 1.1/1.2 */ 24 25 IB_SA_METHOD_GET_TABLE = 0x12, 26 IB_SA_METHOD_GET_TABLE_RESP = 0x92, 27 IB_SA_METHOD_DELETE = 0x15, 28 IB_SA_METHOD_DELETE_RESP = 0x95, 29 IB_SA_METHOD_GET_MULTI = 0x14, 30 IB_SA_METHOD_GET_MULTI_RESP = 0x94, 31 IB_SA_METHOD_GET_TRACE_TBL = 0x13 32 }; 33 34 #define OPA_SA_CLASS_VERSION 0x80 35 enum { 36 IB_SA_ATTR_CLASS_PORTINFO = 0x01, 37 IB_SA_ATTR_NOTICE = 0x02, 38 IB_SA_ATTR_INFORM_INFO = 0x03, 39 IB_SA_ATTR_NODE_REC = 0x11, 40 IB_SA_ATTR_PORT_INFO_REC = 0x12, 41 IB_SA_ATTR_SL2VL_REC = 0x13, 42 IB_SA_ATTR_SWITCH_REC = 0x14, 43 IB_SA_ATTR_LINEAR_FDB_REC = 0x15, 44 IB_SA_ATTR_RANDOM_FDB_REC = 0x16, 45 IB_SA_ATTR_MCAST_FDB_REC = 0x17, 46 IB_SA_ATTR_SM_INFO_REC = 0x18, 47 IB_SA_ATTR_LINK_REC = 0x20, 48 IB_SA_ATTR_GUID_INFO_REC = 0x30, 49 IB_SA_ATTR_SERVICE_REC = 0x31, 50 IB_SA_ATTR_PARTITION_REC = 0x33, 51 IB_SA_ATTR_PATH_REC = 0x35, 52 IB_SA_ATTR_VL_ARB_REC = 0x36, 53 IB_SA_ATTR_MC_MEMBER_REC = 0x38, 54 IB_SA_ATTR_TRACE_REC = 0x39, 55 IB_SA_ATTR_MULTI_PATH_REC = 0x3a, 56 IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b, 57 IB_SA_ATTR_INFORM_INFO_REC = 0xf3 58 }; 59 60 enum ib_sa_selector { 61 IB_SA_GT = 0, 62 IB_SA_LT = 1, 63 IB_SA_EQ = 2, 64 /* 65 * The meaning of "best" depends on the attribute: for 66 * example, for MTU best will return the largest available 67 * MTU, while for packet life time, best will return the 68 * smallest available life time. 69 */ 70 IB_SA_BEST = 3 71 }; 72 73 /* 74 * There are 4 types of join states: 75 * FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember. 76 * The order corresponds to JoinState bits in MCMemberRecord. 77 */ 78 enum ib_sa_mc_join_states { 79 FULLMEMBER_JOIN, 80 NONMEMBER_JOIN, 81 SENDONLY_NONMEBER_JOIN, 82 SENDONLY_FULLMEMBER_JOIN, 83 NUM_JOIN_MEMBERSHIP_TYPES, 84 }; 85 86 #define IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT BIT(12) 87 88 /* 89 * Structures for SA records are named "struct ib_sa_xxx_rec." No 90 * attempt is made to pack structures to match the physical layout of 91 * SA records in SA MADs; all packing and unpacking is handled by the 92 * SA query code. 93 * 94 * For a record with structure ib_sa_xxx_rec, the naming convention 95 * for the component mask value for field yyy is IB_SA_XXX_REC_YYY (we 96 * never use different abbreviations or otherwise change the spelling 97 * of xxx/yyy between ib_sa_xxx_rec.yyy and IB_SA_XXX_REC_YYY). 98 * 99 * Reserved rows are indicated with comments to help maintainability. 100 */ 101 102 #define IB_SA_PATH_REC_SERVICE_ID (IB_SA_COMP_MASK( 0) |\ 103 IB_SA_COMP_MASK( 1)) 104 #define IB_SA_PATH_REC_DGID IB_SA_COMP_MASK( 2) 105 #define IB_SA_PATH_REC_SGID IB_SA_COMP_MASK( 3) 106 #define IB_SA_PATH_REC_DLID IB_SA_COMP_MASK( 4) 107 #define IB_SA_PATH_REC_SLID IB_SA_COMP_MASK( 5) 108 #define IB_SA_PATH_REC_RAW_TRAFFIC IB_SA_COMP_MASK( 6) 109 /* reserved: 7 */ 110 #define IB_SA_PATH_REC_FLOW_LABEL IB_SA_COMP_MASK( 8) 111 #define IB_SA_PATH_REC_HOP_LIMIT IB_SA_COMP_MASK( 9) 112 #define IB_SA_PATH_REC_TRAFFIC_CLASS IB_SA_COMP_MASK(10) 113 #define IB_SA_PATH_REC_REVERSIBLE IB_SA_COMP_MASK(11) 114 #define IB_SA_PATH_REC_NUMB_PATH IB_SA_COMP_MASK(12) 115 #define IB_SA_PATH_REC_PKEY IB_SA_COMP_MASK(13) 116 #define IB_SA_PATH_REC_QOS_CLASS IB_SA_COMP_MASK(14) 117 #define IB_SA_PATH_REC_SL IB_SA_COMP_MASK(15) 118 #define IB_SA_PATH_REC_MTU_SELECTOR IB_SA_COMP_MASK(16) 119 #define IB_SA_PATH_REC_MTU IB_SA_COMP_MASK(17) 120 #define IB_SA_PATH_REC_RATE_SELECTOR IB_SA_COMP_MASK(18) 121 #define IB_SA_PATH_REC_RATE IB_SA_COMP_MASK(19) 122 #define IB_SA_PATH_REC_PACKET_LIFE_TIME_SELECTOR IB_SA_COMP_MASK(20) 123 #define IB_SA_PATH_REC_PACKET_LIFE_TIME IB_SA_COMP_MASK(21) 124 #define IB_SA_PATH_REC_PREFERENCE IB_SA_COMP_MASK(22) 125 126 enum sa_path_rec_type { 127 SA_PATH_REC_TYPE_IB, 128 SA_PATH_REC_TYPE_ROCE_V1, 129 SA_PATH_REC_TYPE_ROCE_V2, 130 SA_PATH_REC_TYPE_OPA 131 }; 132 133 struct sa_path_rec_ib { 134 __be16 dlid; 135 __be16 slid; 136 u8 raw_traffic; 137 }; 138 139 /** 140 * struct sa_path_rec_roce - RoCE specific portion of the path record entry 141 * @route_resolved: When set, it indicates that this route is already 142 * resolved for this path record entry. 143 * @dmac: Destination mac address for the given DGID entry 144 * of the path record entry. 145 */ 146 struct sa_path_rec_roce { 147 bool route_resolved; 148 u8 dmac[ETH_ALEN]; 149 }; 150 151 struct sa_path_rec_opa { 152 __be32 dlid; 153 __be32 slid; 154 u8 raw_traffic; 155 u8 l2_8B; 156 u8 l2_10B; 157 u8 l2_9B; 158 u8 l2_16B; 159 u8 qos_type; 160 u8 qos_priority; 161 }; 162 163 struct sa_path_rec { 164 union ib_gid dgid; 165 union ib_gid sgid; 166 __be64 service_id; 167 /* reserved */ 168 __be32 flow_label; 169 u8 hop_limit; 170 u8 traffic_class; 171 u8 reversible; 172 u8 numb_path; 173 __be16 pkey; 174 __be16 qos_class; 175 u8 sl; 176 u8 mtu_selector; 177 u8 mtu; 178 u8 rate_selector; 179 u8 rate; 180 u8 packet_life_time_selector; 181 u8 packet_life_time; 182 u8 preference; 183 union { 184 struct sa_path_rec_ib ib; 185 struct sa_path_rec_roce roce; 186 struct sa_path_rec_opa opa; 187 }; 188 enum sa_path_rec_type rec_type; 189 }; 190 191 static inline enum ib_gid_type 192 sa_conv_pathrec_to_gid_type(struct sa_path_rec *rec) 193 { 194 switch (rec->rec_type) { 195 case SA_PATH_REC_TYPE_ROCE_V1: 196 return IB_GID_TYPE_ROCE; 197 case SA_PATH_REC_TYPE_ROCE_V2: 198 return IB_GID_TYPE_ROCE_UDP_ENCAP; 199 default: 200 return IB_GID_TYPE_IB; 201 } 202 } 203 204 static inline enum sa_path_rec_type 205 sa_conv_gid_to_pathrec_type(enum ib_gid_type type) 206 { 207 switch (type) { 208 case IB_GID_TYPE_ROCE: 209 return SA_PATH_REC_TYPE_ROCE_V1; 210 case IB_GID_TYPE_ROCE_UDP_ENCAP: 211 return SA_PATH_REC_TYPE_ROCE_V2; 212 default: 213 return SA_PATH_REC_TYPE_IB; 214 } 215 } 216 217 static inline void path_conv_opa_to_ib(struct sa_path_rec *ib, 218 struct sa_path_rec *opa) 219 { 220 if ((be32_to_cpu(opa->opa.dlid) >= 221 be16_to_cpu(IB_MULTICAST_LID_BASE)) || 222 (be32_to_cpu(opa->opa.slid) >= 223 be16_to_cpu(IB_MULTICAST_LID_BASE))) { 224 /* Create OPA GID and zero out the LID */ 225 ib->dgid.global.interface_id 226 = OPA_MAKE_ID(be32_to_cpu(opa->opa.dlid)); 227 ib->dgid.global.subnet_prefix 228 = opa->dgid.global.subnet_prefix; 229 ib->sgid.global.interface_id 230 = OPA_MAKE_ID(be32_to_cpu(opa->opa.slid)); 231 ib->dgid.global.subnet_prefix 232 = opa->dgid.global.subnet_prefix; 233 ib->ib.dlid = 0; 234 235 ib->ib.slid = 0; 236 } else { 237 ib->ib.dlid = htons(ntohl(opa->opa.dlid)); 238 ib->ib.slid = htons(ntohl(opa->opa.slid)); 239 } 240 ib->service_id = opa->service_id; 241 ib->ib.raw_traffic = opa->opa.raw_traffic; 242 } 243 244 static inline void path_conv_ib_to_opa(struct sa_path_rec *opa, 245 struct sa_path_rec *ib) 246 { 247 __be32 slid, dlid; 248 249 if ((ib_is_opa_gid(&ib->sgid)) || 250 (ib_is_opa_gid(&ib->dgid))) { 251 slid = htonl(opa_get_lid_from_gid(&ib->sgid)); 252 dlid = htonl(opa_get_lid_from_gid(&ib->dgid)); 253 } else { 254 slid = htonl(ntohs(ib->ib.slid)); 255 dlid = htonl(ntohs(ib->ib.dlid)); 256 } 257 opa->opa.slid = slid; 258 opa->opa.dlid = dlid; 259 opa->service_id = ib->service_id; 260 opa->opa.raw_traffic = ib->ib.raw_traffic; 261 } 262 263 /* Convert from OPA to IB path record */ 264 static inline void sa_convert_path_opa_to_ib(struct sa_path_rec *dest, 265 struct sa_path_rec *src) 266 { 267 if (src->rec_type != SA_PATH_REC_TYPE_OPA) 268 return; 269 270 *dest = *src; 271 dest->rec_type = SA_PATH_REC_TYPE_IB; 272 path_conv_opa_to_ib(dest, src); 273 } 274 275 /* Convert from IB to OPA path record */ 276 static inline void sa_convert_path_ib_to_opa(struct sa_path_rec *dest, 277 struct sa_path_rec *src) 278 { 279 if (src->rec_type != SA_PATH_REC_TYPE_IB) 280 return; 281 282 /* Do a structure copy and overwrite the relevant fields */ 283 *dest = *src; 284 dest->rec_type = SA_PATH_REC_TYPE_OPA; 285 path_conv_ib_to_opa(dest, src); 286 } 287 288 #define IB_SA_MCMEMBER_REC_MGID IB_SA_COMP_MASK( 0) 289 #define IB_SA_MCMEMBER_REC_PORT_GID IB_SA_COMP_MASK( 1) 290 #define IB_SA_MCMEMBER_REC_QKEY IB_SA_COMP_MASK( 2) 291 #define IB_SA_MCMEMBER_REC_MLID IB_SA_COMP_MASK( 3) 292 #define IB_SA_MCMEMBER_REC_MTU_SELECTOR IB_SA_COMP_MASK( 4) 293 #define IB_SA_MCMEMBER_REC_MTU IB_SA_COMP_MASK( 5) 294 #define IB_SA_MCMEMBER_REC_TRAFFIC_CLASS IB_SA_COMP_MASK( 6) 295 #define IB_SA_MCMEMBER_REC_PKEY IB_SA_COMP_MASK( 7) 296 #define IB_SA_MCMEMBER_REC_RATE_SELECTOR IB_SA_COMP_MASK( 8) 297 #define IB_SA_MCMEMBER_REC_RATE IB_SA_COMP_MASK( 9) 298 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR IB_SA_COMP_MASK(10) 299 #define IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME IB_SA_COMP_MASK(11) 300 #define IB_SA_MCMEMBER_REC_SL IB_SA_COMP_MASK(12) 301 #define IB_SA_MCMEMBER_REC_FLOW_LABEL IB_SA_COMP_MASK(13) 302 #define IB_SA_MCMEMBER_REC_HOP_LIMIT IB_SA_COMP_MASK(14) 303 #define IB_SA_MCMEMBER_REC_SCOPE IB_SA_COMP_MASK(15) 304 #define IB_SA_MCMEMBER_REC_JOIN_STATE IB_SA_COMP_MASK(16) 305 #define IB_SA_MCMEMBER_REC_PROXY_JOIN IB_SA_COMP_MASK(17) 306 307 struct ib_sa_mcmember_rec { 308 union ib_gid mgid; 309 union ib_gid port_gid; 310 __be32 qkey; 311 __be16 mlid; 312 u8 mtu_selector; 313 u8 mtu; 314 u8 traffic_class; 315 __be16 pkey; 316 u8 rate_selector; 317 u8 rate; 318 u8 packet_life_time_selector; 319 u8 packet_life_time; 320 u8 sl; 321 __be32 flow_label; 322 u8 hop_limit; 323 u8 scope; 324 u8 join_state; 325 u8 proxy_join; 326 }; 327 328 /* Service Record Component Mask Sec 15.2.5.14 Ver 1.1 */ 329 #define IB_SA_SERVICE_REC_SERVICE_ID IB_SA_COMP_MASK( 0) 330 #define IB_SA_SERVICE_REC_SERVICE_GID IB_SA_COMP_MASK( 1) 331 #define IB_SA_SERVICE_REC_SERVICE_PKEY IB_SA_COMP_MASK( 2) 332 /* reserved: 3 */ 333 #define IB_SA_SERVICE_REC_SERVICE_LEASE IB_SA_COMP_MASK( 4) 334 #define IB_SA_SERVICE_REC_SERVICE_KEY IB_SA_COMP_MASK( 5) 335 #define IB_SA_SERVICE_REC_SERVICE_NAME IB_SA_COMP_MASK( 6) 336 #define IB_SA_SERVICE_REC_SERVICE_DATA8_0 IB_SA_COMP_MASK( 7) 337 #define IB_SA_SERVICE_REC_SERVICE_DATA8_1 IB_SA_COMP_MASK( 8) 338 #define IB_SA_SERVICE_REC_SERVICE_DATA8_2 IB_SA_COMP_MASK( 9) 339 #define IB_SA_SERVICE_REC_SERVICE_DATA8_3 IB_SA_COMP_MASK(10) 340 #define IB_SA_SERVICE_REC_SERVICE_DATA8_4 IB_SA_COMP_MASK(11) 341 #define IB_SA_SERVICE_REC_SERVICE_DATA8_5 IB_SA_COMP_MASK(12) 342 #define IB_SA_SERVICE_REC_SERVICE_DATA8_6 IB_SA_COMP_MASK(13) 343 #define IB_SA_SERVICE_REC_SERVICE_DATA8_7 IB_SA_COMP_MASK(14) 344 #define IB_SA_SERVICE_REC_SERVICE_DATA8_8 IB_SA_COMP_MASK(15) 345 #define IB_SA_SERVICE_REC_SERVICE_DATA8_9 IB_SA_COMP_MASK(16) 346 #define IB_SA_SERVICE_REC_SERVICE_DATA8_10 IB_SA_COMP_MASK(17) 347 #define IB_SA_SERVICE_REC_SERVICE_DATA8_11 IB_SA_COMP_MASK(18) 348 #define IB_SA_SERVICE_REC_SERVICE_DATA8_12 IB_SA_COMP_MASK(19) 349 #define IB_SA_SERVICE_REC_SERVICE_DATA8_13 IB_SA_COMP_MASK(20) 350 #define IB_SA_SERVICE_REC_SERVICE_DATA8_14 IB_SA_COMP_MASK(21) 351 #define IB_SA_SERVICE_REC_SERVICE_DATA8_15 IB_SA_COMP_MASK(22) 352 #define IB_SA_SERVICE_REC_SERVICE_DATA16_0 IB_SA_COMP_MASK(23) 353 #define IB_SA_SERVICE_REC_SERVICE_DATA16_1 IB_SA_COMP_MASK(24) 354 #define IB_SA_SERVICE_REC_SERVICE_DATA16_2 IB_SA_COMP_MASK(25) 355 #define IB_SA_SERVICE_REC_SERVICE_DATA16_3 IB_SA_COMP_MASK(26) 356 #define IB_SA_SERVICE_REC_SERVICE_DATA16_4 IB_SA_COMP_MASK(27) 357 #define IB_SA_SERVICE_REC_SERVICE_DATA16_5 IB_SA_COMP_MASK(28) 358 #define IB_SA_SERVICE_REC_SERVICE_DATA16_6 IB_SA_COMP_MASK(29) 359 #define IB_SA_SERVICE_REC_SERVICE_DATA16_7 IB_SA_COMP_MASK(30) 360 #define IB_SA_SERVICE_REC_SERVICE_DATA32_0 IB_SA_COMP_MASK(31) 361 #define IB_SA_SERVICE_REC_SERVICE_DATA32_1 IB_SA_COMP_MASK(32) 362 #define IB_SA_SERVICE_REC_SERVICE_DATA32_2 IB_SA_COMP_MASK(33) 363 #define IB_SA_SERVICE_REC_SERVICE_DATA32_3 IB_SA_COMP_MASK(34) 364 #define IB_SA_SERVICE_REC_SERVICE_DATA64_0 IB_SA_COMP_MASK(35) 365 #define IB_SA_SERVICE_REC_SERVICE_DATA64_1 IB_SA_COMP_MASK(36) 366 367 #define IB_DEFAULT_SERVICE_LEASE 0xFFFFFFFF 368 369 struct ib_sa_service_rec { 370 u64 id; 371 union ib_gid gid; 372 __be16 pkey; 373 /* reserved */ 374 u32 lease; 375 u8 key[16]; 376 u8 name[64]; 377 u8 data8[16]; 378 u16 data16[8]; 379 u32 data32[4]; 380 u64 data64[2]; 381 }; 382 383 #define IB_SA_GUIDINFO_REC_LID IB_SA_COMP_MASK(0) 384 #define IB_SA_GUIDINFO_REC_BLOCK_NUM IB_SA_COMP_MASK(1) 385 #define IB_SA_GUIDINFO_REC_RES1 IB_SA_COMP_MASK(2) 386 #define IB_SA_GUIDINFO_REC_RES2 IB_SA_COMP_MASK(3) 387 #define IB_SA_GUIDINFO_REC_GID0 IB_SA_COMP_MASK(4) 388 #define IB_SA_GUIDINFO_REC_GID1 IB_SA_COMP_MASK(5) 389 #define IB_SA_GUIDINFO_REC_GID2 IB_SA_COMP_MASK(6) 390 #define IB_SA_GUIDINFO_REC_GID3 IB_SA_COMP_MASK(7) 391 #define IB_SA_GUIDINFO_REC_GID4 IB_SA_COMP_MASK(8) 392 #define IB_SA_GUIDINFO_REC_GID5 IB_SA_COMP_MASK(9) 393 #define IB_SA_GUIDINFO_REC_GID6 IB_SA_COMP_MASK(10) 394 #define IB_SA_GUIDINFO_REC_GID7 IB_SA_COMP_MASK(11) 395 396 struct ib_sa_guidinfo_rec { 397 __be16 lid; 398 u8 block_num; 399 /* reserved */ 400 u8 res1; 401 __be32 res2; 402 u8 guid_info_list[64]; 403 }; 404 405 struct ib_sa_client { 406 atomic_t users; 407 struct completion comp; 408 }; 409 410 /** 411 * ib_sa_register_client - Register an SA client. 412 */ 413 void ib_sa_register_client(struct ib_sa_client *client); 414 415 /** 416 * ib_sa_unregister_client - Deregister an SA client. 417 * @client: Client object to deregister. 418 */ 419 void ib_sa_unregister_client(struct ib_sa_client *client); 420 421 struct ib_sa_query; 422 423 void ib_sa_cancel_query(int id, struct ib_sa_query *query); 424 425 int ib_sa_path_rec_get(struct ib_sa_client *client, struct ib_device *device, 426 u8 port_num, struct sa_path_rec *rec, 427 ib_sa_comp_mask comp_mask, unsigned long timeout_ms, 428 gfp_t gfp_mask, 429 void (*callback)(int status, struct sa_path_rec *resp, 430 void *context), 431 void *context, struct ib_sa_query **query); 432 433 int ib_sa_service_rec_query(struct ib_sa_client *client, 434 struct ib_device *device, u8 port_num, u8 method, 435 struct ib_sa_service_rec *rec, 436 ib_sa_comp_mask comp_mask, unsigned long timeout_ms, 437 gfp_t gfp_mask, 438 void (*callback)(int status, 439 struct ib_sa_service_rec *resp, 440 void *context), 441 void *context, struct ib_sa_query **sa_query); 442 443 struct ib_sa_multicast { 444 struct ib_sa_mcmember_rec rec; 445 ib_sa_comp_mask comp_mask; 446 int (*callback)(int status, 447 struct ib_sa_multicast *multicast); 448 void *context; 449 }; 450 451 /** 452 * ib_sa_join_multicast - Initiates a join request to the specified multicast 453 * group. 454 * @client: SA client 455 * @device: Device associated with the multicast group. 456 * @port_num: Port on the specified device to associate with the multicast 457 * group. 458 * @rec: SA multicast member record specifying group attributes. 459 * @comp_mask: Component mask indicating which group attributes of %rec are 460 * valid. 461 * @gfp_mask: GFP mask for memory allocations. 462 * @callback: User callback invoked once the join operation completes. 463 * @context: User specified context stored with the ib_sa_multicast structure. 464 * 465 * This call initiates a multicast join request with the SA for the specified 466 * multicast group. If the join operation is started successfully, it returns 467 * an ib_sa_multicast structure that is used to track the multicast operation. 468 * Users must free this structure by calling ib_free_multicast, even if the 469 * join operation later fails. (The callback status is non-zero.) 470 * 471 * If the join operation fails; status will be non-zero, with the following 472 * failures possible: 473 * -ETIMEDOUT: The request timed out. 474 * -EIO: An error occurred sending the query. 475 * -EINVAL: The MCMemberRecord values differed from the existing group's. 476 * -ENETRESET: Indicates that an fatal error has occurred on the multicast 477 * group, and the user must rejoin the group to continue using it. 478 */ 479 struct ib_sa_multicast *ib_sa_join_multicast(struct ib_sa_client *client, 480 struct ib_device *device, u8 port_num, 481 struct ib_sa_mcmember_rec *rec, 482 ib_sa_comp_mask comp_mask, gfp_t gfp_mask, 483 int (*callback)(int status, 484 struct ib_sa_multicast 485 *multicast), 486 void *context); 487 488 /** 489 * ib_free_multicast - Frees the multicast tracking structure, and releases 490 * any reference on the multicast group. 491 * @multicast: Multicast tracking structure allocated by ib_join_multicast. 492 * 493 * This call blocks until the multicast identifier is destroyed. It may 494 * not be called from within the multicast callback; however, returning a non- 495 * zero value from the callback will result in destroying the multicast 496 * tracking structure. 497 */ 498 void ib_sa_free_multicast(struct ib_sa_multicast *multicast); 499 500 /** 501 * ib_get_mcmember_rec - Looks up a multicast member record by its MGID and 502 * returns it if found. 503 * @device: Device associated with the multicast group. 504 * @port_num: Port on the specified device to associate with the multicast 505 * group. 506 * @mgid: MGID of multicast group. 507 * @rec: Location to copy SA multicast member record. 508 */ 509 int ib_sa_get_mcmember_rec(struct ib_device *device, u8 port_num, 510 union ib_gid *mgid, struct ib_sa_mcmember_rec *rec); 511 512 /** 513 * ib_init_ah_from_mcmember - Initialize address handle attributes based on 514 * an SA multicast member record. 515 */ 516 int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num, 517 struct ib_sa_mcmember_rec *rec, 518 struct net_device *ndev, 519 enum ib_gid_type gid_type, 520 struct rdma_ah_attr *ah_attr); 521 522 int ib_init_ah_attr_from_path(struct ib_device *device, u8 port_num, 523 struct sa_path_rec *rec, 524 struct rdma_ah_attr *ah_attr, 525 const struct ib_gid_attr *sgid_attr); 526 527 /** 528 * ib_sa_pack_path - Conert a path record from struct ib_sa_path_rec 529 * to IB MAD wire format. 530 */ 531 void ib_sa_pack_path(struct sa_path_rec *rec, void *attribute); 532 533 /** 534 * ib_sa_unpack_path - Convert a path record from MAD format to struct 535 * ib_sa_path_rec. 536 */ 537 void ib_sa_unpack_path(void *attribute, struct sa_path_rec *rec); 538 539 /* Support GuidInfoRecord */ 540 int ib_sa_guid_info_rec_query(struct ib_sa_client *client, 541 struct ib_device *device, u8 port_num, 542 struct ib_sa_guidinfo_rec *rec, 543 ib_sa_comp_mask comp_mask, u8 method, 544 unsigned long timeout_ms, gfp_t gfp_mask, 545 void (*callback)(int status, 546 struct ib_sa_guidinfo_rec *resp, 547 void *context), 548 void *context, struct ib_sa_query **sa_query); 549 550 static inline bool sa_path_is_roce(struct sa_path_rec *rec) 551 { 552 return ((rec->rec_type == SA_PATH_REC_TYPE_ROCE_V1) || 553 (rec->rec_type == SA_PATH_REC_TYPE_ROCE_V2)); 554 } 555 556 static inline bool sa_path_is_opa(struct sa_path_rec *rec) 557 { 558 return (rec->rec_type == SA_PATH_REC_TYPE_OPA); 559 } 560 561 static inline void sa_path_set_slid(struct sa_path_rec *rec, u32 slid) 562 { 563 if (rec->rec_type == SA_PATH_REC_TYPE_IB) 564 rec->ib.slid = cpu_to_be16(slid); 565 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA) 566 rec->opa.slid = cpu_to_be32(slid); 567 } 568 569 static inline void sa_path_set_dlid(struct sa_path_rec *rec, u32 dlid) 570 { 571 if (rec->rec_type == SA_PATH_REC_TYPE_IB) 572 rec->ib.dlid = cpu_to_be16(dlid); 573 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA) 574 rec->opa.dlid = cpu_to_be32(dlid); 575 } 576 577 static inline void sa_path_set_raw_traffic(struct sa_path_rec *rec, 578 u8 raw_traffic) 579 { 580 if (rec->rec_type == SA_PATH_REC_TYPE_IB) 581 rec->ib.raw_traffic = raw_traffic; 582 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA) 583 rec->opa.raw_traffic = raw_traffic; 584 } 585 586 static inline __be32 sa_path_get_slid(struct sa_path_rec *rec) 587 { 588 if (rec->rec_type == SA_PATH_REC_TYPE_IB) 589 return htonl(ntohs(rec->ib.slid)); 590 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA) 591 return rec->opa.slid; 592 return 0; 593 } 594 595 static inline __be32 sa_path_get_dlid(struct sa_path_rec *rec) 596 { 597 if (rec->rec_type == SA_PATH_REC_TYPE_IB) 598 return htonl(ntohs(rec->ib.dlid)); 599 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA) 600 return rec->opa.dlid; 601 return 0; 602 } 603 604 static inline u8 sa_path_get_raw_traffic(struct sa_path_rec *rec) 605 { 606 if (rec->rec_type == SA_PATH_REC_TYPE_IB) 607 return rec->ib.raw_traffic; 608 else if (rec->rec_type == SA_PATH_REC_TYPE_OPA) 609 return rec->opa.raw_traffic; 610 return 0; 611 } 612 613 static inline void sa_path_set_dmac(struct sa_path_rec *rec, u8 *dmac) 614 { 615 if (sa_path_is_roce(rec)) 616 memcpy(rec->roce.dmac, dmac, ETH_ALEN); 617 } 618 619 static inline void sa_path_set_dmac_zero(struct sa_path_rec *rec) 620 { 621 if (sa_path_is_roce(rec)) 622 eth_zero_addr(rec->roce.dmac); 623 } 624 625 static inline u8 *sa_path_get_dmac(struct sa_path_rec *rec) 626 { 627 if (sa_path_is_roce(rec)) 628 return rec->roce.dmac; 629 return NULL; 630 } 631 #endif /* IB_SA_H */ 632