1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0 3 * 4 * Copyright (c) 2004, 2005 Intel Corporation. All rights reserved. 5 * Copyright (c) 2004 Topspin Corporation. All rights reserved. 6 * Copyright (c) 2004 Voltaire Corporation. All rights reserved. 7 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 8 * 9 * This software is available to you under a choice of one of two 10 * licenses. You may choose to be licensed under the terms of the GNU 11 * General Public License (GPL) Version 2, available from the file 12 * COPYING in the main directory of this source tree, or the 13 * OpenIB.org BSD license below: 14 * 15 * Redistribution and use in source and binary forms, with or 16 * without modification, are permitted provided that the following 17 * conditions are met: 18 * 19 * - Redistributions of source code must retain the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer. 22 * 23 * - Redistributions in binary form must reproduce the above 24 * copyright notice, this list of conditions and the following 25 * disclaimer in the documentation and/or other materials 26 * provided with the distribution. 27 * 28 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 29 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 31 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 32 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 33 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 34 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 35 * SOFTWARE. 36 */ 37 38 #if !defined(IB_CM_H) 39 #define IB_CM_H 40 41 #include <rdma/ib_mad.h> 42 #include <rdma/ib_sa.h> 43 44 /* ib_cm and ib_user_cm modules share /sys/class/infiniband_cm */ 45 extern struct class cm_class; 46 47 enum ib_cm_state { 48 IB_CM_IDLE, 49 IB_CM_LISTEN, 50 IB_CM_REQ_SENT, 51 IB_CM_REQ_RCVD, 52 IB_CM_MRA_REQ_SENT, 53 IB_CM_MRA_REQ_RCVD, 54 IB_CM_REP_SENT, 55 IB_CM_REP_RCVD, 56 IB_CM_MRA_REP_SENT, 57 IB_CM_MRA_REP_RCVD, 58 IB_CM_ESTABLISHED, 59 IB_CM_DREQ_SENT, 60 IB_CM_DREQ_RCVD, 61 IB_CM_TIMEWAIT, 62 IB_CM_SIDR_REQ_SENT, 63 IB_CM_SIDR_REQ_RCVD 64 }; 65 66 enum ib_cm_lap_state { 67 IB_CM_LAP_UNINIT, 68 IB_CM_LAP_IDLE, 69 IB_CM_LAP_SENT, 70 IB_CM_LAP_RCVD, 71 IB_CM_MRA_LAP_SENT, 72 IB_CM_MRA_LAP_RCVD, 73 }; 74 75 enum ib_cm_event_type { 76 IB_CM_REQ_ERROR, 77 IB_CM_REQ_RECEIVED, 78 IB_CM_REP_ERROR, 79 IB_CM_REP_RECEIVED, 80 IB_CM_RTU_RECEIVED, 81 IB_CM_USER_ESTABLISHED, 82 IB_CM_DREQ_ERROR, 83 IB_CM_DREQ_RECEIVED, 84 IB_CM_DREP_RECEIVED, 85 IB_CM_TIMEWAIT_EXIT, 86 IB_CM_MRA_RECEIVED, 87 IB_CM_REJ_RECEIVED, 88 IB_CM_LAP_ERROR, 89 IB_CM_LAP_RECEIVED, 90 IB_CM_APR_RECEIVED, 91 IB_CM_SIDR_REQ_ERROR, 92 IB_CM_SIDR_REQ_RECEIVED, 93 IB_CM_SIDR_REP_RECEIVED 94 }; 95 96 enum ib_cm_data_size { 97 IB_CM_REQ_PRIVATE_DATA_SIZE = 92, 98 IB_CM_MRA_PRIVATE_DATA_SIZE = 222, 99 IB_CM_REJ_PRIVATE_DATA_SIZE = 148, 100 IB_CM_REP_PRIVATE_DATA_SIZE = 196, 101 IB_CM_RTU_PRIVATE_DATA_SIZE = 224, 102 IB_CM_DREQ_PRIVATE_DATA_SIZE = 220, 103 IB_CM_DREP_PRIVATE_DATA_SIZE = 224, 104 IB_CM_REJ_ARI_LENGTH = 72, 105 IB_CM_LAP_PRIVATE_DATA_SIZE = 168, 106 IB_CM_APR_PRIVATE_DATA_SIZE = 148, 107 IB_CM_APR_INFO_LENGTH = 72, 108 IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216, 109 IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136, 110 IB_CM_SIDR_REP_INFO_LENGTH = 72, 111 }; 112 113 struct ib_cm_id; 114 115 struct ib_cm_req_event_param { 116 struct ib_cm_id *listen_id; 117 118 /* P_Key that was used by the GMP's BTH header */ 119 u16 bth_pkey; 120 121 u8 port; 122 123 struct ib_sa_path_rec *primary_path; 124 struct ib_sa_path_rec *alternate_path; 125 126 /* 127 * SGID index of the primary path. Currently only 128 * useful for RoCE. Alternate path GID attributes 129 * are not yet supported. 130 */ 131 u8 ppath_sgid_index; 132 133 __be64 remote_ca_guid; 134 u32 remote_qkey; 135 u32 remote_qpn; 136 enum ib_qp_type qp_type; 137 138 u32 starting_psn; 139 u8 responder_resources; 140 u8 initiator_depth; 141 unsigned int local_cm_response_timeout:5; 142 unsigned int flow_control:1; 143 unsigned int remote_cm_response_timeout:5; 144 unsigned int retry_count:3; 145 unsigned int rnr_retry_count:3; 146 unsigned int srq:1; 147 }; 148 149 struct ib_cm_rep_event_param { 150 __be64 remote_ca_guid; 151 u32 remote_qkey; 152 u32 remote_qpn; 153 u32 starting_psn; 154 u8 responder_resources; 155 u8 initiator_depth; 156 unsigned int target_ack_delay:5; 157 unsigned int failover_accepted:2; 158 unsigned int flow_control:1; 159 unsigned int rnr_retry_count:3; 160 unsigned int srq:1; 161 }; 162 163 enum ib_cm_rej_reason { 164 IB_CM_REJ_NO_QP = 1, 165 IB_CM_REJ_NO_EEC = 2, 166 IB_CM_REJ_NO_RESOURCES = 3, 167 IB_CM_REJ_TIMEOUT = 4, 168 IB_CM_REJ_UNSUPPORTED = 5, 169 IB_CM_REJ_INVALID_COMM_ID = 6, 170 IB_CM_REJ_INVALID_COMM_INSTANCE = 7, 171 IB_CM_REJ_INVALID_SERVICE_ID = 8, 172 IB_CM_REJ_INVALID_TRANSPORT_TYPE = 9, 173 IB_CM_REJ_STALE_CONN = 10, 174 IB_CM_REJ_RDC_NOT_EXIST = 11, 175 IB_CM_REJ_INVALID_GID = 12, 176 IB_CM_REJ_INVALID_LID = 13, 177 IB_CM_REJ_INVALID_SL = 14, 178 IB_CM_REJ_INVALID_TRAFFIC_CLASS = 15, 179 IB_CM_REJ_INVALID_HOP_LIMIT = 16, 180 IB_CM_REJ_INVALID_PACKET_RATE = 17, 181 IB_CM_REJ_INVALID_ALT_GID = 18, 182 IB_CM_REJ_INVALID_ALT_LID = 19, 183 IB_CM_REJ_INVALID_ALT_SL = 20, 184 IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS = 21, 185 IB_CM_REJ_INVALID_ALT_HOP_LIMIT = 22, 186 IB_CM_REJ_INVALID_ALT_PACKET_RATE = 23, 187 IB_CM_REJ_PORT_CM_REDIRECT = 24, 188 IB_CM_REJ_PORT_REDIRECT = 25, 189 IB_CM_REJ_INVALID_MTU = 26, 190 IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES = 27, 191 IB_CM_REJ_CONSUMER_DEFINED = 28, 192 IB_CM_REJ_INVALID_RNR_RETRY = 29, 193 IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID = 30, 194 IB_CM_REJ_INVALID_CLASS_VERSION = 31, 195 IB_CM_REJ_INVALID_FLOW_LABEL = 32, 196 IB_CM_REJ_INVALID_ALT_FLOW_LABEL = 33 197 }; 198 199 struct ib_cm_rej_event_param { 200 enum ib_cm_rej_reason reason; 201 void *ari; 202 u8 ari_length; 203 }; 204 205 struct ib_cm_mra_event_param { 206 u8 service_timeout; 207 }; 208 209 struct ib_cm_lap_event_param { 210 struct ib_sa_path_rec *alternate_path; 211 }; 212 213 enum ib_cm_apr_status { 214 IB_CM_APR_SUCCESS, 215 IB_CM_APR_INVALID_COMM_ID, 216 IB_CM_APR_UNSUPPORTED, 217 IB_CM_APR_REJECT, 218 IB_CM_APR_REDIRECT, 219 IB_CM_APR_IS_CURRENT, 220 IB_CM_APR_INVALID_QPN_EECN, 221 IB_CM_APR_INVALID_LID, 222 IB_CM_APR_INVALID_GID, 223 IB_CM_APR_INVALID_FLOW_LABEL, 224 IB_CM_APR_INVALID_TCLASS, 225 IB_CM_APR_INVALID_HOP_LIMIT, 226 IB_CM_APR_INVALID_PACKET_RATE, 227 IB_CM_APR_INVALID_SL 228 }; 229 230 struct ib_cm_apr_event_param { 231 enum ib_cm_apr_status ap_status; 232 void *apr_info; 233 u8 info_len; 234 }; 235 236 struct ib_cm_sidr_req_event_param { 237 struct ib_cm_id *listen_id; 238 __be64 service_id; 239 240 /* 241 * SGID index of the request. Currently only 242 * useful for RoCE. 243 */ 244 u8 sgid_index; 245 246 /* P_Key that was used by the GMP's BTH header */ 247 u16 bth_pkey; 248 u8 port; 249 u16 pkey; 250 }; 251 252 enum ib_cm_sidr_status { 253 IB_SIDR_SUCCESS, 254 IB_SIDR_UNSUPPORTED, 255 IB_SIDR_REJECT, 256 IB_SIDR_NO_QP, 257 IB_SIDR_REDIRECT, 258 IB_SIDR_UNSUPPORTED_VERSION 259 }; 260 261 struct ib_cm_sidr_rep_event_param { 262 enum ib_cm_sidr_status status; 263 u32 qkey; 264 u32 qpn; 265 void *info; 266 u8 info_len; 267 }; 268 269 struct ib_cm_event { 270 enum ib_cm_event_type event; 271 union { 272 struct ib_cm_req_event_param req_rcvd; 273 struct ib_cm_rep_event_param rep_rcvd; 274 /* No data for RTU received events. */ 275 struct ib_cm_rej_event_param rej_rcvd; 276 struct ib_cm_mra_event_param mra_rcvd; 277 struct ib_cm_lap_event_param lap_rcvd; 278 struct ib_cm_apr_event_param apr_rcvd; 279 /* No data for DREQ/DREP received events. */ 280 struct ib_cm_sidr_req_event_param sidr_req_rcvd; 281 struct ib_cm_sidr_rep_event_param sidr_rep_rcvd; 282 enum ib_wc_status send_status; 283 } param; 284 285 void *private_data; 286 }; 287 288 #define CM_REQ_ATTR_ID cpu_to_be16(0x0010) 289 #define CM_MRA_ATTR_ID cpu_to_be16(0x0011) 290 #define CM_REJ_ATTR_ID cpu_to_be16(0x0012) 291 #define CM_REP_ATTR_ID cpu_to_be16(0x0013) 292 #define CM_RTU_ATTR_ID cpu_to_be16(0x0014) 293 #define CM_DREQ_ATTR_ID cpu_to_be16(0x0015) 294 #define CM_DREP_ATTR_ID cpu_to_be16(0x0016) 295 #define CM_SIDR_REQ_ATTR_ID cpu_to_be16(0x0017) 296 #define CM_SIDR_REP_ATTR_ID cpu_to_be16(0x0018) 297 #define CM_LAP_ATTR_ID cpu_to_be16(0x0019) 298 #define CM_APR_ATTR_ID cpu_to_be16(0x001A) 299 300 /** 301 * ib_cm_handler - User-defined callback to process communication events. 302 * @cm_id: Communication identifier associated with the reported event. 303 * @event: Information about the communication event. 304 * 305 * IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEIVED communication events 306 * generated as a result of listen requests result in the allocation of a 307 * new @cm_id. The new @cm_id is returned to the user through this callback. 308 * Clients are responsible for destroying the new @cm_id. For peer-to-peer 309 * IB_CM_REQ_RECEIVED and all other events, the returned @cm_id corresponds 310 * to a user's existing communication identifier. 311 * 312 * Users may not call ib_destroy_cm_id while in the context of this callback; 313 * however, returning a non-zero value instructs the communication manager to 314 * destroy the @cm_id after the callback completes. 315 */ 316 typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id, 317 struct ib_cm_event *event); 318 319 struct ib_cm_id { 320 ib_cm_handler cm_handler; 321 void *context; 322 struct ib_device *device; 323 __be64 service_id; 324 __be64 service_mask; 325 enum ib_cm_state state; /* internal CM/debug use */ 326 enum ib_cm_lap_state lap_state; /* internal CM/debug use */ 327 __be32 local_id; 328 __be32 remote_id; 329 u32 remote_cm_qpn; /* 1 unless redirected */ 330 }; 331 332 /** 333 * ib_create_cm_id - Allocate a communication identifier. 334 * @device: Device associated with the cm_id. All related communication will 335 * be associated with the specified device. 336 * @cm_handler: Callback invoked to notify the user of CM events. 337 * @context: User specified context associated with the communication 338 * identifier. 339 * 340 * Communication identifiers are used to track connection states, service 341 * ID resolution requests, and listen requests. 342 */ 343 struct ib_cm_id *ib_create_cm_id(struct ib_device *device, 344 ib_cm_handler cm_handler, 345 void *context); 346 347 /** 348 * ib_destroy_cm_id - Destroy a connection identifier. 349 * @cm_id: Connection identifier to destroy. 350 * 351 * This call blocks until the connection identifier is destroyed. 352 */ 353 void ib_destroy_cm_id(struct ib_cm_id *cm_id); 354 355 #define IB_SERVICE_ID_AGN_MASK cpu_to_be64(0xFF00000000000000ULL) 356 #define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x0200000000000000ULL) 357 #define IB_CMA_SERVICE_ID cpu_to_be64(0x0000000001000000ULL) 358 #define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFF000000ULL) 359 #define IB_SDP_SERVICE_ID cpu_to_be64(0x0000000000010000ULL) 360 #define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFFFF0000ULL) 361 362 /** 363 * ib_cm_listen - Initiates listening on the specified service ID for 364 * connection and service ID resolution requests. 365 * @cm_id: Connection identifier associated with the listen request. 366 * @service_id: Service identifier matched against incoming connection 367 * and service ID resolution requests. The service ID should be specified 368 * network-byte order. If set to IB_CM_ASSIGN_SERVICE_ID, the CM will 369 * assign a service ID to the caller. 370 * @service_mask: Mask applied to service ID used to listen across a 371 * range of service IDs. If set to 0, the service ID is matched 372 * exactly. This parameter is ignored if %service_id is set to 373 * IB_CM_ASSIGN_SERVICE_ID. 374 */ 375 int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, 376 __be64 service_mask); 377 378 struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device, 379 ib_cm_handler cm_handler, 380 __be64 service_id); 381 382 struct ib_cm_req_param { 383 struct ib_sa_path_rec *primary_path; 384 struct ib_sa_path_rec *alternate_path; 385 __be64 service_id; 386 u32 qp_num; 387 enum ib_qp_type qp_type; 388 u32 starting_psn; 389 const void *private_data; 390 u8 private_data_len; 391 u8 peer_to_peer; 392 u8 responder_resources; 393 u8 initiator_depth; 394 u8 remote_cm_response_timeout; 395 u8 flow_control; 396 u8 local_cm_response_timeout; 397 u8 retry_count; 398 u8 rnr_retry_count; 399 u8 max_cm_retries; 400 u8 srq; 401 }; 402 403 /** 404 * ib_send_cm_req - Sends a connection request to the remote node. 405 * @cm_id: Connection identifier that will be associated with the 406 * connection request. 407 * @param: Connection request information needed to establish the 408 * connection. 409 */ 410 int ib_send_cm_req(struct ib_cm_id *cm_id, 411 struct ib_cm_req_param *param); 412 413 struct ib_cm_rep_param { 414 u32 qp_num; 415 u32 starting_psn; 416 const void *private_data; 417 u8 private_data_len; 418 u8 responder_resources; 419 u8 initiator_depth; 420 u8 failover_accepted; 421 u8 flow_control; 422 u8 rnr_retry_count; 423 u8 srq; 424 }; 425 426 /** 427 * ib_send_cm_rep - Sends a connection reply in response to a connection 428 * request. 429 * @cm_id: Connection identifier that will be associated with the 430 * connection request. 431 * @param: Connection reply information needed to establish the 432 * connection. 433 */ 434 int ib_send_cm_rep(struct ib_cm_id *cm_id, 435 struct ib_cm_rep_param *param); 436 437 /** 438 * ib_send_cm_rtu - Sends a connection ready to use message in response 439 * to a connection reply message. 440 * @cm_id: Connection identifier associated with the connection request. 441 * @private_data: Optional user-defined private data sent with the 442 * ready to use message. 443 * @private_data_len: Size of the private data buffer, in bytes. 444 */ 445 int ib_send_cm_rtu(struct ib_cm_id *cm_id, 446 const void *private_data, 447 u8 private_data_len); 448 449 /** 450 * ib_send_cm_dreq - Sends a disconnection request for an existing 451 * connection. 452 * @cm_id: Connection identifier associated with the connection being 453 * released. 454 * @private_data: Optional user-defined private data sent with the 455 * disconnection request message. 456 * @private_data_len: Size of the private data buffer, in bytes. 457 */ 458 int ib_send_cm_dreq(struct ib_cm_id *cm_id, 459 const void *private_data, 460 u8 private_data_len); 461 462 /** 463 * ib_send_cm_drep - Sends a disconnection reply to a disconnection request. 464 * @cm_id: Connection identifier associated with the connection being 465 * released. 466 * @private_data: Optional user-defined private data sent with the 467 * disconnection reply message. 468 * @private_data_len: Size of the private data buffer, in bytes. 469 * 470 * If the cm_id is in the correct state, the CM will transition the connection 471 * to the timewait state, even if an error occurs sending the DREP message. 472 */ 473 int ib_send_cm_drep(struct ib_cm_id *cm_id, 474 const void *private_data, 475 u8 private_data_len); 476 477 /** 478 * ib_cm_notify - Notifies the CM of an event reported to the consumer. 479 * @cm_id: Connection identifier to transition to established. 480 * @event: Type of event. 481 * 482 * This routine should be invoked by users to notify the CM of relevant 483 * communication events. Events that should be reported to the CM and 484 * when to report them are: 485 * 486 * IB_EVENT_COMM_EST - Used when a message is received on a connected 487 * QP before an RTU has been received. 488 * IB_EVENT_PATH_MIG - Notifies the CM that the connection has failed over 489 * to the alternate path. 490 */ 491 int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event); 492 493 /** 494 * ib_send_cm_rej - Sends a connection rejection message to the 495 * remote node. 496 * @cm_id: Connection identifier associated with the connection being 497 * rejected. 498 * @reason: Reason for the connection request rejection. 499 * @ari: Optional additional rejection information. 500 * @ari_length: Size of the additional rejection information, in bytes. 501 * @private_data: Optional user-defined private data sent with the 502 * rejection message. 503 * @private_data_len: Size of the private data buffer, in bytes. 504 */ 505 int ib_send_cm_rej(struct ib_cm_id *cm_id, 506 enum ib_cm_rej_reason reason, 507 void *ari, 508 u8 ari_length, 509 const void *private_data, 510 u8 private_data_len); 511 512 #define IB_CM_MRA_FLAG_DELAY 0x80 /* Send MRA only after a duplicate msg */ 513 514 /** 515 * ib_send_cm_mra - Sends a message receipt acknowledgement to a connection 516 * message. 517 * @cm_id: Connection identifier associated with the connection message. 518 * @service_timeout: The lower 5-bits specify the maximum time required for 519 * the sender to reply to the connection message. The upper 3-bits 520 * specify additional control flags. 521 * @private_data: Optional user-defined private data sent with the 522 * message receipt acknowledgement. 523 * @private_data_len: Size of the private data buffer, in bytes. 524 */ 525 int ib_send_cm_mra(struct ib_cm_id *cm_id, 526 u8 service_timeout, 527 const void *private_data, 528 u8 private_data_len); 529 530 /** 531 * ib_send_cm_lap - Sends a load alternate path request. 532 * @cm_id: Connection identifier associated with the load alternate path 533 * message. 534 * @alternate_path: A path record that identifies the alternate path to 535 * load. 536 * @private_data: Optional user-defined private data sent with the 537 * load alternate path message. 538 * @private_data_len: Size of the private data buffer, in bytes. 539 */ 540 int ib_send_cm_lap(struct ib_cm_id *cm_id, 541 struct ib_sa_path_rec *alternate_path, 542 const void *private_data, 543 u8 private_data_len); 544 545 /** 546 * ib_cm_init_qp_attr - Initializes the QP attributes for use in transitioning 547 * to a specified QP state. 548 * @cm_id: Communication identifier associated with the QP attributes to 549 * initialize. 550 * @qp_attr: On input, specifies the desired QP state. On output, the 551 * mandatory and desired optional attributes will be set in order to 552 * modify the QP to the specified state. 553 * @qp_attr_mask: The QP attribute mask that may be used to transition the 554 * QP to the specified state. 555 * 556 * Users must set the @qp_attr->qp_state to the desired QP state. This call 557 * will set all required attributes for the given transition, along with 558 * known optional attributes. Users may override the attributes returned from 559 * this call before calling ib_modify_qp. 560 */ 561 int ib_cm_init_qp_attr(struct ib_cm_id *cm_id, 562 struct ib_qp_attr *qp_attr, 563 int *qp_attr_mask); 564 565 /** 566 * ib_send_cm_apr - Sends an alternate path response message in response to 567 * a load alternate path request. 568 * @cm_id: Connection identifier associated with the alternate path response. 569 * @status: Reply status sent with the alternate path response. 570 * @info: Optional additional information sent with the alternate path 571 * response. 572 * @info_length: Size of the additional information, in bytes. 573 * @private_data: Optional user-defined private data sent with the 574 * alternate path response message. 575 * @private_data_len: Size of the private data buffer, in bytes. 576 */ 577 int ib_send_cm_apr(struct ib_cm_id *cm_id, 578 enum ib_cm_apr_status status, 579 void *info, 580 u8 info_length, 581 const void *private_data, 582 u8 private_data_len); 583 584 struct ib_cm_sidr_req_param { 585 struct ib_sa_path_rec *path; 586 __be64 service_id; 587 int timeout_ms; 588 const void *private_data; 589 u8 private_data_len; 590 u8 max_cm_retries; 591 }; 592 593 /** 594 * ib_send_cm_sidr_req - Sends a service ID resolution request to the 595 * remote node. 596 * @cm_id: Communication identifier that will be associated with the 597 * service ID resolution request. 598 * @param: Service ID resolution request information. 599 */ 600 int ib_send_cm_sidr_req(struct ib_cm_id *cm_id, 601 struct ib_cm_sidr_req_param *param); 602 603 struct ib_cm_sidr_rep_param { 604 u32 qp_num; 605 u32 qkey; 606 enum ib_cm_sidr_status status; 607 const void *info; 608 u8 info_length; 609 const void *private_data; 610 u8 private_data_len; 611 }; 612 613 /** 614 * ib_send_cm_sidr_rep - Sends a service ID resolution reply to the 615 * remote node. 616 * @cm_id: Communication identifier associated with the received service ID 617 * resolution request. 618 * @param: Service ID resolution reply information. 619 */ 620 int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id, 621 struct ib_cm_sidr_rep_param *param); 622 623 /** 624 * ibcm_reject_msg - return a pointer to a reject message string. 625 * @reason: Value returned in the REJECT event status field. 626 */ 627 const char *__attribute_const__ ibcm_reject_msg(int reason); 628 629 #endif /* IB_CM_H */ 630