1 /* 2 * Copyright (c) 2004, 2005 Intel Corporation. All rights reserved. 3 * Copyright (c) 2004 Topspin Corporation. All rights reserved. 4 * Copyright (c) 2004 Voltaire Corporation. All rights reserved. 5 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 6 * 7 * This software is available to you under a choice of one of two 8 * licenses. You may choose to be licensed under the terms of the GNU 9 * General Public License (GPL) Version 2, available from the file 10 * COPYING in the main directory of this source tree, or the 11 * OpenIB.org BSD license below: 12 * 13 * Redistribution and use in source and binary forms, with or 14 * without modification, are permitted provided that the following 15 * conditions are met: 16 * 17 * - Redistributions of source code must retain the above 18 * copyright notice, this list of conditions and the following 19 * disclaimer. 20 * 21 * - Redistributions in binary form must reproduce the above 22 * copyright notice, this list of conditions and the following 23 * disclaimer in the documentation and/or other materials 24 * provided with the distribution. 25 * 26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 33 * SOFTWARE. 34 */ 35 #if !defined(IB_CM_H) 36 #define IB_CM_H 37 38 #include <rdma/ib_mad.h> 39 #include <rdma/ib_sa.h> 40 41 /* ib_cm and ib_user_cm modules share /sys/class/infiniband_cm */ 42 extern struct class cm_class; 43 44 enum ib_cm_state { 45 IB_CM_IDLE, 46 IB_CM_LISTEN, 47 IB_CM_REQ_SENT, 48 IB_CM_REQ_RCVD, 49 IB_CM_MRA_REQ_SENT, 50 IB_CM_MRA_REQ_RCVD, 51 IB_CM_REP_SENT, 52 IB_CM_REP_RCVD, 53 IB_CM_MRA_REP_SENT, 54 IB_CM_MRA_REP_RCVD, 55 IB_CM_ESTABLISHED, 56 IB_CM_DREQ_SENT, 57 IB_CM_DREQ_RCVD, 58 IB_CM_TIMEWAIT, 59 IB_CM_SIDR_REQ_SENT, 60 IB_CM_SIDR_REQ_RCVD 61 }; 62 63 enum ib_cm_lap_state { 64 IB_CM_LAP_UNINIT, 65 IB_CM_LAP_IDLE, 66 IB_CM_LAP_SENT, 67 IB_CM_LAP_RCVD, 68 IB_CM_MRA_LAP_SENT, 69 IB_CM_MRA_LAP_RCVD, 70 }; 71 72 enum ib_cm_event_type { 73 IB_CM_REQ_ERROR, 74 IB_CM_REQ_RECEIVED, 75 IB_CM_REP_ERROR, 76 IB_CM_REP_RECEIVED, 77 IB_CM_RTU_RECEIVED, 78 IB_CM_USER_ESTABLISHED, 79 IB_CM_DREQ_ERROR, 80 IB_CM_DREQ_RECEIVED, 81 IB_CM_DREP_RECEIVED, 82 IB_CM_TIMEWAIT_EXIT, 83 IB_CM_MRA_RECEIVED, 84 IB_CM_REJ_RECEIVED, 85 IB_CM_LAP_ERROR, 86 IB_CM_LAP_RECEIVED, 87 IB_CM_APR_RECEIVED, 88 IB_CM_SIDR_REQ_ERROR, 89 IB_CM_SIDR_REQ_RECEIVED, 90 IB_CM_SIDR_REP_RECEIVED 91 }; 92 93 enum ib_cm_data_size { 94 IB_CM_REQ_PRIVATE_DATA_SIZE = 92, 95 IB_CM_MRA_PRIVATE_DATA_SIZE = 222, 96 IB_CM_REJ_PRIVATE_DATA_SIZE = 148, 97 IB_CM_REP_PRIVATE_DATA_SIZE = 196, 98 IB_CM_RTU_PRIVATE_DATA_SIZE = 224, 99 IB_CM_DREQ_PRIVATE_DATA_SIZE = 220, 100 IB_CM_DREP_PRIVATE_DATA_SIZE = 224, 101 IB_CM_REJ_ARI_LENGTH = 72, 102 IB_CM_LAP_PRIVATE_DATA_SIZE = 168, 103 IB_CM_APR_PRIVATE_DATA_SIZE = 148, 104 IB_CM_APR_INFO_LENGTH = 72, 105 IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216, 106 IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136, 107 IB_CM_SIDR_REP_INFO_LENGTH = 72, 108 }; 109 110 struct ib_cm_id; 111 112 struct ib_cm_req_event_param { 113 struct ib_cm_id *listen_id; 114 115 /* P_Key that was used by the GMP's BTH header */ 116 u16 bth_pkey; 117 118 u8 port; 119 120 struct sa_path_rec *primary_path; 121 struct sa_path_rec *alternate_path; 122 123 __be64 remote_ca_guid; 124 u32 remote_qkey; 125 u32 remote_qpn; 126 enum ib_qp_type qp_type; 127 128 u32 starting_psn; 129 u8 responder_resources; 130 u8 initiator_depth; 131 unsigned int local_cm_response_timeout:5; 132 unsigned int flow_control:1; 133 unsigned int remote_cm_response_timeout:5; 134 unsigned int retry_count:3; 135 unsigned int rnr_retry_count:3; 136 unsigned int srq:1; 137 }; 138 139 struct ib_cm_rep_event_param { 140 __be64 remote_ca_guid; 141 u32 remote_qkey; 142 u32 remote_qpn; 143 u32 starting_psn; 144 u8 responder_resources; 145 u8 initiator_depth; 146 unsigned int target_ack_delay:5; 147 unsigned int failover_accepted:2; 148 unsigned int flow_control:1; 149 unsigned int rnr_retry_count:3; 150 unsigned int srq:1; 151 }; 152 153 enum ib_cm_rej_reason { 154 IB_CM_REJ_NO_QP = 1, 155 IB_CM_REJ_NO_EEC = 2, 156 IB_CM_REJ_NO_RESOURCES = 3, 157 IB_CM_REJ_TIMEOUT = 4, 158 IB_CM_REJ_UNSUPPORTED = 5, 159 IB_CM_REJ_INVALID_COMM_ID = 6, 160 IB_CM_REJ_INVALID_COMM_INSTANCE = 7, 161 IB_CM_REJ_INVALID_SERVICE_ID = 8, 162 IB_CM_REJ_INVALID_TRANSPORT_TYPE = 9, 163 IB_CM_REJ_STALE_CONN = 10, 164 IB_CM_REJ_RDC_NOT_EXIST = 11, 165 IB_CM_REJ_INVALID_GID = 12, 166 IB_CM_REJ_INVALID_LID = 13, 167 IB_CM_REJ_INVALID_SL = 14, 168 IB_CM_REJ_INVALID_TRAFFIC_CLASS = 15, 169 IB_CM_REJ_INVALID_HOP_LIMIT = 16, 170 IB_CM_REJ_INVALID_PACKET_RATE = 17, 171 IB_CM_REJ_INVALID_ALT_GID = 18, 172 IB_CM_REJ_INVALID_ALT_LID = 19, 173 IB_CM_REJ_INVALID_ALT_SL = 20, 174 IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS = 21, 175 IB_CM_REJ_INVALID_ALT_HOP_LIMIT = 22, 176 IB_CM_REJ_INVALID_ALT_PACKET_RATE = 23, 177 IB_CM_REJ_PORT_CM_REDIRECT = 24, 178 IB_CM_REJ_PORT_REDIRECT = 25, 179 IB_CM_REJ_INVALID_MTU = 26, 180 IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES = 27, 181 IB_CM_REJ_CONSUMER_DEFINED = 28, 182 IB_CM_REJ_INVALID_RNR_RETRY = 29, 183 IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID = 30, 184 IB_CM_REJ_INVALID_CLASS_VERSION = 31, 185 IB_CM_REJ_INVALID_FLOW_LABEL = 32, 186 IB_CM_REJ_INVALID_ALT_FLOW_LABEL = 33 187 }; 188 189 struct ib_cm_rej_event_param { 190 enum ib_cm_rej_reason reason; 191 void *ari; 192 u8 ari_length; 193 }; 194 195 struct ib_cm_mra_event_param { 196 u8 service_timeout; 197 }; 198 199 struct ib_cm_lap_event_param { 200 struct sa_path_rec *alternate_path; 201 }; 202 203 enum ib_cm_apr_status { 204 IB_CM_APR_SUCCESS, 205 IB_CM_APR_INVALID_COMM_ID, 206 IB_CM_APR_UNSUPPORTED, 207 IB_CM_APR_REJECT, 208 IB_CM_APR_REDIRECT, 209 IB_CM_APR_IS_CURRENT, 210 IB_CM_APR_INVALID_QPN_EECN, 211 IB_CM_APR_INVALID_LID, 212 IB_CM_APR_INVALID_GID, 213 IB_CM_APR_INVALID_FLOW_LABEL, 214 IB_CM_APR_INVALID_TCLASS, 215 IB_CM_APR_INVALID_HOP_LIMIT, 216 IB_CM_APR_INVALID_PACKET_RATE, 217 IB_CM_APR_INVALID_SL 218 }; 219 220 struct ib_cm_apr_event_param { 221 enum ib_cm_apr_status ap_status; 222 void *apr_info; 223 u8 info_len; 224 }; 225 226 struct ib_cm_sidr_req_event_param { 227 struct ib_cm_id *listen_id; 228 __be64 service_id; 229 /* P_Key that was used by the GMP's BTH header */ 230 u16 bth_pkey; 231 u8 port; 232 u16 pkey; 233 }; 234 235 enum ib_cm_sidr_status { 236 IB_SIDR_SUCCESS, 237 IB_SIDR_UNSUPPORTED, 238 IB_SIDR_REJECT, 239 IB_SIDR_NO_QP, 240 IB_SIDR_REDIRECT, 241 IB_SIDR_UNSUPPORTED_VERSION 242 }; 243 244 struct ib_cm_sidr_rep_event_param { 245 enum ib_cm_sidr_status status; 246 u32 qkey; 247 u32 qpn; 248 void *info; 249 u8 info_len; 250 }; 251 252 struct ib_cm_event { 253 enum ib_cm_event_type event; 254 union { 255 struct ib_cm_req_event_param req_rcvd; 256 struct ib_cm_rep_event_param rep_rcvd; 257 /* No data for RTU received events. */ 258 struct ib_cm_rej_event_param rej_rcvd; 259 struct ib_cm_mra_event_param mra_rcvd; 260 struct ib_cm_lap_event_param lap_rcvd; 261 struct ib_cm_apr_event_param apr_rcvd; 262 /* No data for DREQ/DREP received events. */ 263 struct ib_cm_sidr_req_event_param sidr_req_rcvd; 264 struct ib_cm_sidr_rep_event_param sidr_rep_rcvd; 265 enum ib_wc_status send_status; 266 } param; 267 268 void *private_data; 269 }; 270 271 #define CM_REQ_ATTR_ID cpu_to_be16(0x0010) 272 #define CM_MRA_ATTR_ID cpu_to_be16(0x0011) 273 #define CM_REJ_ATTR_ID cpu_to_be16(0x0012) 274 #define CM_REP_ATTR_ID cpu_to_be16(0x0013) 275 #define CM_RTU_ATTR_ID cpu_to_be16(0x0014) 276 #define CM_DREQ_ATTR_ID cpu_to_be16(0x0015) 277 #define CM_DREP_ATTR_ID cpu_to_be16(0x0016) 278 #define CM_SIDR_REQ_ATTR_ID cpu_to_be16(0x0017) 279 #define CM_SIDR_REP_ATTR_ID cpu_to_be16(0x0018) 280 #define CM_LAP_ATTR_ID cpu_to_be16(0x0019) 281 #define CM_APR_ATTR_ID cpu_to_be16(0x001A) 282 283 /** 284 * ib_cm_handler - User-defined callback to process communication events. 285 * @cm_id: Communication identifier associated with the reported event. 286 * @event: Information about the communication event. 287 * 288 * IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEIVED communication events 289 * generated as a result of listen requests result in the allocation of a 290 * new @cm_id. The new @cm_id is returned to the user through this callback. 291 * Clients are responsible for destroying the new @cm_id. For peer-to-peer 292 * IB_CM_REQ_RECEIVED and all other events, the returned @cm_id corresponds 293 * to a user's existing communication identifier. 294 * 295 * Users may not call ib_destroy_cm_id while in the context of this callback; 296 * however, returning a non-zero value instructs the communication manager to 297 * destroy the @cm_id after the callback completes. 298 */ 299 typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id, 300 struct ib_cm_event *event); 301 302 struct ib_cm_id { 303 ib_cm_handler cm_handler; 304 void *context; 305 struct ib_device *device; 306 __be64 service_id; 307 __be64 service_mask; 308 enum ib_cm_state state; /* internal CM/debug use */ 309 enum ib_cm_lap_state lap_state; /* internal CM/debug use */ 310 __be32 local_id; 311 __be32 remote_id; 312 u32 remote_cm_qpn; /* 1 unless redirected */ 313 }; 314 315 /** 316 * ib_create_cm_id - Allocate a communication identifier. 317 * @device: Device associated with the cm_id. All related communication will 318 * be associated with the specified device. 319 * @cm_handler: Callback invoked to notify the user of CM events. 320 * @context: User specified context associated with the communication 321 * identifier. 322 * 323 * Communication identifiers are used to track connection states, service 324 * ID resolution requests, and listen requests. 325 */ 326 struct ib_cm_id *ib_create_cm_id(struct ib_device *device, 327 ib_cm_handler cm_handler, 328 void *context); 329 330 /** 331 * ib_destroy_cm_id - Destroy a connection identifier. 332 * @cm_id: Connection identifier to destroy. 333 * 334 * This call blocks until the connection identifier is destroyed. 335 */ 336 void ib_destroy_cm_id(struct ib_cm_id *cm_id); 337 338 #define IB_SERVICE_ID_AGN_MASK cpu_to_be64(0xFF00000000000000ULL) 339 #define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x0200000000000000ULL) 340 #define IB_CMA_SERVICE_ID cpu_to_be64(0x0000000001000000ULL) 341 #define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFF000000ULL) 342 #define IB_SDP_SERVICE_ID cpu_to_be64(0x0000000000010000ULL) 343 #define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFFFF0000ULL) 344 345 /** 346 * ib_cm_listen - Initiates listening on the specified service ID for 347 * connection and service ID resolution requests. 348 * @cm_id: Connection identifier associated with the listen request. 349 * @service_id: Service identifier matched against incoming connection 350 * and service ID resolution requests. The service ID should be specified 351 * network-byte order. If set to IB_CM_ASSIGN_SERVICE_ID, the CM will 352 * assign a service ID to the caller. 353 * @service_mask: Mask applied to service ID used to listen across a 354 * range of service IDs. If set to 0, the service ID is matched 355 * exactly. This parameter is ignored if %service_id is set to 356 * IB_CM_ASSIGN_SERVICE_ID. 357 */ 358 int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, 359 __be64 service_mask); 360 361 struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device, 362 ib_cm_handler cm_handler, 363 __be64 service_id); 364 365 struct ib_cm_req_param { 366 struct sa_path_rec *primary_path; 367 struct sa_path_rec *alternate_path; 368 __be64 service_id; 369 u32 qp_num; 370 enum ib_qp_type qp_type; 371 u32 starting_psn; 372 const void *private_data; 373 u8 private_data_len; 374 u8 peer_to_peer; 375 u8 responder_resources; 376 u8 initiator_depth; 377 u8 remote_cm_response_timeout; 378 u8 flow_control; 379 u8 local_cm_response_timeout; 380 u8 retry_count; 381 u8 rnr_retry_count; 382 u8 max_cm_retries; 383 u8 srq; 384 }; 385 386 /** 387 * ib_send_cm_req - Sends a connection request to the remote node. 388 * @cm_id: Connection identifier that will be associated with the 389 * connection request. 390 * @param: Connection request information needed to establish the 391 * connection. 392 */ 393 int ib_send_cm_req(struct ib_cm_id *cm_id, 394 struct ib_cm_req_param *param); 395 396 struct ib_cm_rep_param { 397 u32 qp_num; 398 u32 starting_psn; 399 const void *private_data; 400 u8 private_data_len; 401 u8 responder_resources; 402 u8 initiator_depth; 403 u8 failover_accepted; 404 u8 flow_control; 405 u8 rnr_retry_count; 406 u8 srq; 407 }; 408 409 /** 410 * ib_send_cm_rep - Sends a connection reply in response to a connection 411 * request. 412 * @cm_id: Connection identifier that will be associated with the 413 * connection request. 414 * @param: Connection reply information needed to establish the 415 * connection. 416 */ 417 int ib_send_cm_rep(struct ib_cm_id *cm_id, 418 struct ib_cm_rep_param *param); 419 420 /** 421 * ib_send_cm_rtu - Sends a connection ready to use message in response 422 * to a connection reply message. 423 * @cm_id: Connection identifier associated with the connection request. 424 * @private_data: Optional user-defined private data sent with the 425 * ready to use message. 426 * @private_data_len: Size of the private data buffer, in bytes. 427 */ 428 int ib_send_cm_rtu(struct ib_cm_id *cm_id, 429 const void *private_data, 430 u8 private_data_len); 431 432 /** 433 * ib_send_cm_dreq - Sends a disconnection request for an existing 434 * connection. 435 * @cm_id: Connection identifier associated with the connection being 436 * released. 437 * @private_data: Optional user-defined private data sent with the 438 * disconnection request message. 439 * @private_data_len: Size of the private data buffer, in bytes. 440 */ 441 int ib_send_cm_dreq(struct ib_cm_id *cm_id, 442 const void *private_data, 443 u8 private_data_len); 444 445 /** 446 * ib_send_cm_drep - Sends a disconnection reply to a disconnection request. 447 * @cm_id: Connection identifier associated with the connection being 448 * released. 449 * @private_data: Optional user-defined private data sent with the 450 * disconnection reply message. 451 * @private_data_len: Size of the private data buffer, in bytes. 452 * 453 * If the cm_id is in the correct state, the CM will transition the connection 454 * to the timewait state, even if an error occurs sending the DREP message. 455 */ 456 int ib_send_cm_drep(struct ib_cm_id *cm_id, 457 const void *private_data, 458 u8 private_data_len); 459 460 /** 461 * ib_cm_notify - Notifies the CM of an event reported to the consumer. 462 * @cm_id: Connection identifier to transition to established. 463 * @event: Type of event. 464 * 465 * This routine should be invoked by users to notify the CM of relevant 466 * communication events. Events that should be reported to the CM and 467 * when to report them are: 468 * 469 * IB_EVENT_COMM_EST - Used when a message is received on a connected 470 * QP before an RTU has been received. 471 * IB_EVENT_PATH_MIG - Notifies the CM that the connection has failed over 472 * to the alternate path. 473 */ 474 int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event); 475 476 /** 477 * ib_send_cm_rej - Sends a connection rejection message to the 478 * remote node. 479 * @cm_id: Connection identifier associated with the connection being 480 * rejected. 481 * @reason: Reason for the connection request rejection. 482 * @ari: Optional additional rejection information. 483 * @ari_length: Size of the additional rejection information, in bytes. 484 * @private_data: Optional user-defined private data sent with the 485 * rejection message. 486 * @private_data_len: Size of the private data buffer, in bytes. 487 */ 488 int ib_send_cm_rej(struct ib_cm_id *cm_id, 489 enum ib_cm_rej_reason reason, 490 void *ari, 491 u8 ari_length, 492 const void *private_data, 493 u8 private_data_len); 494 495 #define IB_CM_MRA_FLAG_DELAY 0x80 /* Send MRA only after a duplicate msg */ 496 497 /** 498 * ib_send_cm_mra - Sends a message receipt acknowledgement to a connection 499 * message. 500 * @cm_id: Connection identifier associated with the connection message. 501 * @service_timeout: The lower 5-bits specify the maximum time required for 502 * the sender to reply to the connection message. The upper 3-bits 503 * specify additional control flags. 504 * @private_data: Optional user-defined private data sent with the 505 * message receipt acknowledgement. 506 * @private_data_len: Size of the private data buffer, in bytes. 507 */ 508 int ib_send_cm_mra(struct ib_cm_id *cm_id, 509 u8 service_timeout, 510 const void *private_data, 511 u8 private_data_len); 512 513 /** 514 * ib_send_cm_lap - Sends a load alternate path request. 515 * @cm_id: Connection identifier associated with the load alternate path 516 * message. 517 * @alternate_path: A path record that identifies the alternate path to 518 * load. 519 * @private_data: Optional user-defined private data sent with the 520 * load alternate path message. 521 * @private_data_len: Size of the private data buffer, in bytes. 522 */ 523 int ib_send_cm_lap(struct ib_cm_id *cm_id, 524 struct sa_path_rec *alternate_path, 525 const void *private_data, 526 u8 private_data_len); 527 528 /** 529 * ib_cm_init_qp_attr - Initializes the QP attributes for use in transitioning 530 * to a specified QP state. 531 * @cm_id: Communication identifier associated with the QP attributes to 532 * initialize. 533 * @qp_attr: On input, specifies the desired QP state. On output, the 534 * mandatory and desired optional attributes will be set in order to 535 * modify the QP to the specified state. 536 * @qp_attr_mask: The QP attribute mask that may be used to transition the 537 * QP to the specified state. 538 * 539 * Users must set the @qp_attr->qp_state to the desired QP state. This call 540 * will set all required attributes for the given transition, along with 541 * known optional attributes. Users may override the attributes returned from 542 * this call before calling ib_modify_qp. 543 */ 544 int ib_cm_init_qp_attr(struct ib_cm_id *cm_id, 545 struct ib_qp_attr *qp_attr, 546 int *qp_attr_mask); 547 548 /** 549 * ib_send_cm_apr - Sends an alternate path response message in response to 550 * a load alternate path request. 551 * @cm_id: Connection identifier associated with the alternate path response. 552 * @status: Reply status sent with the alternate path response. 553 * @info: Optional additional information sent with the alternate path 554 * response. 555 * @info_length: Size of the additional information, in bytes. 556 * @private_data: Optional user-defined private data sent with the 557 * alternate path response message. 558 * @private_data_len: Size of the private data buffer, in bytes. 559 */ 560 int ib_send_cm_apr(struct ib_cm_id *cm_id, 561 enum ib_cm_apr_status status, 562 void *info, 563 u8 info_length, 564 const void *private_data, 565 u8 private_data_len); 566 567 struct ib_cm_sidr_req_param { 568 struct sa_path_rec *path; 569 __be64 service_id; 570 int timeout_ms; 571 const void *private_data; 572 u8 private_data_len; 573 u8 max_cm_retries; 574 }; 575 576 /** 577 * ib_send_cm_sidr_req - Sends a service ID resolution request to the 578 * remote node. 579 * @cm_id: Communication identifier that will be associated with the 580 * service ID resolution request. 581 * @param: Service ID resolution request information. 582 */ 583 int ib_send_cm_sidr_req(struct ib_cm_id *cm_id, 584 struct ib_cm_sidr_req_param *param); 585 586 struct ib_cm_sidr_rep_param { 587 u32 qp_num; 588 u32 qkey; 589 enum ib_cm_sidr_status status; 590 const void *info; 591 u8 info_length; 592 const void *private_data; 593 u8 private_data_len; 594 }; 595 596 /** 597 * ib_send_cm_sidr_rep - Sends a service ID resolution reply to the 598 * remote node. 599 * @cm_id: Communication identifier associated with the received service ID 600 * resolution request. 601 * @param: Service ID resolution reply information. 602 */ 603 int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id, 604 struct ib_cm_sidr_rep_param *param); 605 606 /** 607 * ibcm_reject_msg - return a pointer to a reject message string. 608 * @reason: Value returned in the REJECT event status field. 609 */ 610 const char *__attribute_const__ ibcm_reject_msg(int reason); 611 612 #endif /* IB_CM_H */ 613