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