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 /* 124 * SGID attribute of the primary path. Currently only 125 * useful for RoCE. Alternate path GID attributes 126 * are not yet supported. 127 */ 128 const struct ib_gid_attr *ppath_sgid_attr; 129 130 __be64 remote_ca_guid; 131 u32 remote_qkey; 132 u32 remote_qpn; 133 enum ib_qp_type qp_type; 134 135 u32 starting_psn; 136 u8 responder_resources; 137 u8 initiator_depth; 138 unsigned int local_cm_response_timeout:5; 139 unsigned int flow_control:1; 140 unsigned int remote_cm_response_timeout:5; 141 unsigned int retry_count:3; 142 unsigned int rnr_retry_count:3; 143 unsigned int srq:1; 144 }; 145 146 struct ib_cm_rep_event_param { 147 __be64 remote_ca_guid; 148 u32 remote_qkey; 149 u32 remote_qpn; 150 u32 starting_psn; 151 u8 responder_resources; 152 u8 initiator_depth; 153 unsigned int target_ack_delay:5; 154 unsigned int failover_accepted:2; 155 unsigned int flow_control:1; 156 unsigned int rnr_retry_count:3; 157 unsigned int srq:1; 158 }; 159 160 enum ib_cm_rej_reason { 161 IB_CM_REJ_NO_QP = 1, 162 IB_CM_REJ_NO_EEC = 2, 163 IB_CM_REJ_NO_RESOURCES = 3, 164 IB_CM_REJ_TIMEOUT = 4, 165 IB_CM_REJ_UNSUPPORTED = 5, 166 IB_CM_REJ_INVALID_COMM_ID = 6, 167 IB_CM_REJ_INVALID_COMM_INSTANCE = 7, 168 IB_CM_REJ_INVALID_SERVICE_ID = 8, 169 IB_CM_REJ_INVALID_TRANSPORT_TYPE = 9, 170 IB_CM_REJ_STALE_CONN = 10, 171 IB_CM_REJ_RDC_NOT_EXIST = 11, 172 IB_CM_REJ_INVALID_GID = 12, 173 IB_CM_REJ_INVALID_LID = 13, 174 IB_CM_REJ_INVALID_SL = 14, 175 IB_CM_REJ_INVALID_TRAFFIC_CLASS = 15, 176 IB_CM_REJ_INVALID_HOP_LIMIT = 16, 177 IB_CM_REJ_INVALID_PACKET_RATE = 17, 178 IB_CM_REJ_INVALID_ALT_GID = 18, 179 IB_CM_REJ_INVALID_ALT_LID = 19, 180 IB_CM_REJ_INVALID_ALT_SL = 20, 181 IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS = 21, 182 IB_CM_REJ_INVALID_ALT_HOP_LIMIT = 22, 183 IB_CM_REJ_INVALID_ALT_PACKET_RATE = 23, 184 IB_CM_REJ_PORT_CM_REDIRECT = 24, 185 IB_CM_REJ_PORT_REDIRECT = 25, 186 IB_CM_REJ_INVALID_MTU = 26, 187 IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES = 27, 188 IB_CM_REJ_CONSUMER_DEFINED = 28, 189 IB_CM_REJ_INVALID_RNR_RETRY = 29, 190 IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID = 30, 191 IB_CM_REJ_INVALID_CLASS_VERSION = 31, 192 IB_CM_REJ_INVALID_FLOW_LABEL = 32, 193 IB_CM_REJ_INVALID_ALT_FLOW_LABEL = 33 194 }; 195 196 struct ib_cm_rej_event_param { 197 enum ib_cm_rej_reason reason; 198 void *ari; 199 u8 ari_length; 200 }; 201 202 struct ib_cm_mra_event_param { 203 u8 service_timeout; 204 }; 205 206 struct ib_cm_lap_event_param { 207 struct sa_path_rec *alternate_path; 208 }; 209 210 enum ib_cm_apr_status { 211 IB_CM_APR_SUCCESS, 212 IB_CM_APR_INVALID_COMM_ID, 213 IB_CM_APR_UNSUPPORTED, 214 IB_CM_APR_REJECT, 215 IB_CM_APR_REDIRECT, 216 IB_CM_APR_IS_CURRENT, 217 IB_CM_APR_INVALID_QPN_EECN, 218 IB_CM_APR_INVALID_LID, 219 IB_CM_APR_INVALID_GID, 220 IB_CM_APR_INVALID_FLOW_LABEL, 221 IB_CM_APR_INVALID_TCLASS, 222 IB_CM_APR_INVALID_HOP_LIMIT, 223 IB_CM_APR_INVALID_PACKET_RATE, 224 IB_CM_APR_INVALID_SL 225 }; 226 227 struct ib_cm_apr_event_param { 228 enum ib_cm_apr_status ap_status; 229 void *apr_info; 230 u8 info_len; 231 }; 232 233 struct ib_cm_sidr_req_event_param { 234 struct ib_cm_id *listen_id; 235 __be64 service_id; 236 237 /* 238 * SGID attribute of the request. Currently only 239 * useful for RoCE. 240 */ 241 const struct ib_gid_attr *sgid_attr; 242 /* P_Key that was used by the GMP's BTH header */ 243 u16 bth_pkey; 244 u8 port; 245 u16 pkey; 246 }; 247 248 enum ib_cm_sidr_status { 249 IB_SIDR_SUCCESS, 250 IB_SIDR_UNSUPPORTED, 251 IB_SIDR_REJECT, 252 IB_SIDR_NO_QP, 253 IB_SIDR_REDIRECT, 254 IB_SIDR_UNSUPPORTED_VERSION 255 }; 256 257 struct ib_cm_sidr_rep_event_param { 258 enum ib_cm_sidr_status status; 259 u32 qkey; 260 u32 qpn; 261 void *info; 262 const struct ib_gid_attr *sgid_attr; 263 u8 info_len; 264 }; 265 266 struct ib_cm_event { 267 enum ib_cm_event_type event; 268 union { 269 struct ib_cm_req_event_param req_rcvd; 270 struct ib_cm_rep_event_param rep_rcvd; 271 /* No data for RTU received events. */ 272 struct ib_cm_rej_event_param rej_rcvd; 273 struct ib_cm_mra_event_param mra_rcvd; 274 struct ib_cm_lap_event_param lap_rcvd; 275 struct ib_cm_apr_event_param apr_rcvd; 276 /* No data for DREQ/DREP received events. */ 277 struct ib_cm_sidr_req_event_param sidr_req_rcvd; 278 struct ib_cm_sidr_rep_event_param sidr_rep_rcvd; 279 enum ib_wc_status send_status; 280 } param; 281 282 void *private_data; 283 }; 284 285 #define CM_REQ_ATTR_ID cpu_to_be16(0x0010) 286 #define CM_MRA_ATTR_ID cpu_to_be16(0x0011) 287 #define CM_REJ_ATTR_ID cpu_to_be16(0x0012) 288 #define CM_REP_ATTR_ID cpu_to_be16(0x0013) 289 #define CM_RTU_ATTR_ID cpu_to_be16(0x0014) 290 #define CM_DREQ_ATTR_ID cpu_to_be16(0x0015) 291 #define CM_DREP_ATTR_ID cpu_to_be16(0x0016) 292 #define CM_SIDR_REQ_ATTR_ID cpu_to_be16(0x0017) 293 #define CM_SIDR_REP_ATTR_ID cpu_to_be16(0x0018) 294 #define CM_LAP_ATTR_ID cpu_to_be16(0x0019) 295 #define CM_APR_ATTR_ID cpu_to_be16(0x001A) 296 297 /** 298 * ib_cm_handler - User-defined callback to process communication events. 299 * @cm_id: Communication identifier associated with the reported event. 300 * @event: Information about the communication event. 301 * 302 * IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEIVED communication events 303 * generated as a result of listen requests result in the allocation of a 304 * new @cm_id. The new @cm_id is returned to the user through this callback. 305 * Clients are responsible for destroying the new @cm_id. For peer-to-peer 306 * IB_CM_REQ_RECEIVED and all other events, the returned @cm_id corresponds 307 * to a user's existing communication identifier. 308 * 309 * Users may not call ib_destroy_cm_id while in the context of this callback; 310 * however, returning a non-zero value instructs the communication manager to 311 * destroy the @cm_id after the callback completes. 312 */ 313 typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id, 314 const struct ib_cm_event *event); 315 316 struct ib_cm_id { 317 ib_cm_handler cm_handler; 318 void *context; 319 struct ib_device *device; 320 __be64 service_id; 321 __be64 service_mask; 322 enum ib_cm_state state; /* internal CM/debug use */ 323 enum ib_cm_lap_state lap_state; /* internal CM/debug use */ 324 __be32 local_id; 325 __be32 remote_id; 326 u32 remote_cm_qpn; /* 1 unless redirected */ 327 }; 328 329 /** 330 * ib_create_cm_id - Allocate a communication identifier. 331 * @device: Device associated with the cm_id. All related communication will 332 * be associated with the specified device. 333 * @cm_handler: Callback invoked to notify the user of CM events. 334 * @context: User specified context associated with the communication 335 * identifier. 336 * 337 * Communication identifiers are used to track connection states, service 338 * ID resolution requests, and listen requests. 339 */ 340 struct ib_cm_id *ib_create_cm_id(struct ib_device *device, 341 ib_cm_handler cm_handler, 342 void *context); 343 344 /** 345 * ib_destroy_cm_id - Destroy a connection identifier. 346 * @cm_id: Connection identifier to destroy. 347 * 348 * This call blocks until the connection identifier is destroyed. 349 */ 350 void ib_destroy_cm_id(struct ib_cm_id *cm_id); 351 352 #define IB_SERVICE_ID_AGN_MASK cpu_to_be64(0xFF00000000000000ULL) 353 #define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x0200000000000000ULL) 354 #define IB_CMA_SERVICE_ID cpu_to_be64(0x0000000001000000ULL) 355 #define IB_CMA_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFF000000ULL) 356 #define IB_SDP_SERVICE_ID cpu_to_be64(0x0000000000010000ULL) 357 #define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFFFF0000ULL) 358 359 /** 360 * ib_cm_listen - Initiates listening on the specified service ID for 361 * connection and service ID resolution requests. 362 * @cm_id: Connection identifier associated with the listen request. 363 * @service_id: Service identifier matched against incoming connection 364 * and service ID resolution requests. The service ID should be specified 365 * network-byte order. If set to IB_CM_ASSIGN_SERVICE_ID, the CM will 366 * assign a service ID to the caller. 367 * @service_mask: Mask applied to service ID used to listen across a 368 * range of service IDs. If set to 0, the service ID is matched 369 * exactly. This parameter is ignored if %service_id is set to 370 * IB_CM_ASSIGN_SERVICE_ID. 371 */ 372 int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, 373 __be64 service_mask); 374 375 struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device, 376 ib_cm_handler cm_handler, 377 __be64 service_id); 378 379 struct ib_cm_req_param { 380 struct sa_path_rec *primary_path; 381 struct sa_path_rec *alternate_path; 382 const struct ib_gid_attr *ppath_sgid_attr; 383 __be64 service_id; 384 u32 qp_num; 385 enum ib_qp_type qp_type; 386 u32 starting_psn; 387 const void *private_data; 388 u8 private_data_len; 389 u8 peer_to_peer; 390 u8 responder_resources; 391 u8 initiator_depth; 392 u8 remote_cm_response_timeout; 393 u8 flow_control; 394 u8 local_cm_response_timeout; 395 u8 retry_count; 396 u8 rnr_retry_count; 397 u8 max_cm_retries; 398 u8 srq; 399 }; 400 401 /** 402 * ib_send_cm_req - Sends a connection request to the remote node. 403 * @cm_id: Connection identifier that will be associated with the 404 * connection request. 405 * @param: Connection request information needed to establish the 406 * connection. 407 */ 408 int ib_send_cm_req(struct ib_cm_id *cm_id, 409 struct ib_cm_req_param *param); 410 411 struct ib_cm_rep_param { 412 u32 qp_num; 413 u32 starting_psn; 414 const void *private_data; 415 u8 private_data_len; 416 u8 responder_resources; 417 u8 initiator_depth; 418 u8 failover_accepted; 419 u8 flow_control; 420 u8 rnr_retry_count; 421 u8 srq; 422 }; 423 424 /** 425 * ib_send_cm_rep - Sends a connection reply in response to a connection 426 * request. 427 * @cm_id: Connection identifier that will be associated with the 428 * connection request. 429 * @param: Connection reply information needed to establish the 430 * connection. 431 */ 432 int ib_send_cm_rep(struct ib_cm_id *cm_id, 433 struct ib_cm_rep_param *param); 434 435 /** 436 * ib_send_cm_rtu - Sends a connection ready to use message in response 437 * to a connection reply message. 438 * @cm_id: Connection identifier associated with the connection request. 439 * @private_data: Optional user-defined private data sent with the 440 * ready to use message. 441 * @private_data_len: Size of the private data buffer, in bytes. 442 */ 443 int ib_send_cm_rtu(struct ib_cm_id *cm_id, 444 const void *private_data, 445 u8 private_data_len); 446 447 /** 448 * ib_send_cm_dreq - Sends a disconnection request for an existing 449 * connection. 450 * @cm_id: Connection identifier associated with the connection being 451 * released. 452 * @private_data: Optional user-defined private data sent with the 453 * disconnection request message. 454 * @private_data_len: Size of the private data buffer, in bytes. 455 */ 456 int ib_send_cm_dreq(struct ib_cm_id *cm_id, 457 const void *private_data, 458 u8 private_data_len); 459 460 /** 461 * ib_send_cm_drep - Sends a disconnection reply to a disconnection request. 462 * @cm_id: Connection identifier associated with the connection being 463 * released. 464 * @private_data: Optional user-defined private data sent with the 465 * disconnection reply message. 466 * @private_data_len: Size of the private data buffer, in bytes. 467 * 468 * If the cm_id is in the correct state, the CM will transition the connection 469 * to the timewait state, even if an error occurs sending the DREP message. 470 */ 471 int ib_send_cm_drep(struct ib_cm_id *cm_id, 472 const void *private_data, 473 u8 private_data_len); 474 475 /** 476 * ib_cm_notify - Notifies the CM of an event reported to the consumer. 477 * @cm_id: Connection identifier to transition to established. 478 * @event: Type of event. 479 * 480 * This routine should be invoked by users to notify the CM of relevant 481 * communication events. Events that should be reported to the CM and 482 * when to report them are: 483 * 484 * IB_EVENT_COMM_EST - Used when a message is received on a connected 485 * QP before an RTU has been received. 486 * IB_EVENT_PATH_MIG - Notifies the CM that the connection has failed over 487 * to the alternate path. 488 */ 489 int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event); 490 491 /** 492 * ib_send_cm_rej - Sends a connection rejection message to the 493 * remote node. 494 * @cm_id: Connection identifier associated with the connection being 495 * rejected. 496 * @reason: Reason for the connection request rejection. 497 * @ari: Optional additional rejection information. 498 * @ari_length: Size of the additional rejection information, in bytes. 499 * @private_data: Optional user-defined private data sent with the 500 * rejection message. 501 * @private_data_len: Size of the private data buffer, in bytes. 502 */ 503 int ib_send_cm_rej(struct ib_cm_id *cm_id, 504 enum ib_cm_rej_reason reason, 505 void *ari, 506 u8 ari_length, 507 const void *private_data, 508 u8 private_data_len); 509 510 #define IB_CM_MRA_FLAG_DELAY 0x80 /* Send MRA only after a duplicate msg */ 511 512 /** 513 * ib_send_cm_mra - Sends a message receipt acknowledgement to a connection 514 * message. 515 * @cm_id: Connection identifier associated with the connection message. 516 * @service_timeout: The lower 5-bits specify the maximum time required for 517 * the sender to reply to the connection message. The upper 3-bits 518 * specify additional control flags. 519 * @private_data: Optional user-defined private data sent with the 520 * message receipt acknowledgement. 521 * @private_data_len: Size of the private data buffer, in bytes. 522 */ 523 int ib_send_cm_mra(struct ib_cm_id *cm_id, 524 u8 service_timeout, 525 const void *private_data, 526 u8 private_data_len); 527 528 /** 529 * ib_send_cm_lap - Sends a load alternate path request. 530 * @cm_id: Connection identifier associated with the load alternate path 531 * message. 532 * @alternate_path: A path record that identifies the alternate path to 533 * load. 534 * @private_data: Optional user-defined private data sent with the 535 * load alternate path message. 536 * @private_data_len: Size of the private data buffer, in bytes. 537 */ 538 int ib_send_cm_lap(struct ib_cm_id *cm_id, 539 struct sa_path_rec *alternate_path, 540 const void *private_data, 541 u8 private_data_len); 542 543 /** 544 * ib_cm_init_qp_attr - Initializes the QP attributes for use in transitioning 545 * to a specified QP state. 546 * @cm_id: Communication identifier associated with the QP attributes to 547 * initialize. 548 * @qp_attr: On input, specifies the desired QP state. On output, the 549 * mandatory and desired optional attributes will be set in order to 550 * modify the QP to the specified state. 551 * @qp_attr_mask: The QP attribute mask that may be used to transition the 552 * QP to the specified state. 553 * 554 * Users must set the @qp_attr->qp_state to the desired QP state. This call 555 * will set all required attributes for the given transition, along with 556 * known optional attributes. Users may override the attributes returned from 557 * this call before calling ib_modify_qp. 558 */ 559 int ib_cm_init_qp_attr(struct ib_cm_id *cm_id, 560 struct ib_qp_attr *qp_attr, 561 int *qp_attr_mask); 562 563 /** 564 * ib_send_cm_apr - Sends an alternate path response message in response to 565 * a load alternate path request. 566 * @cm_id: Connection identifier associated with the alternate path response. 567 * @status: Reply status sent with the alternate path response. 568 * @info: Optional additional information sent with the alternate path 569 * response. 570 * @info_length: Size of the additional information, in bytes. 571 * @private_data: Optional user-defined private data sent with the 572 * alternate path response message. 573 * @private_data_len: Size of the private data buffer, in bytes. 574 */ 575 int ib_send_cm_apr(struct ib_cm_id *cm_id, 576 enum ib_cm_apr_status status, 577 void *info, 578 u8 info_length, 579 const void *private_data, 580 u8 private_data_len); 581 582 struct ib_cm_sidr_req_param { 583 struct sa_path_rec *path; 584 const struct ib_gid_attr *sgid_attr; 585 __be64 service_id; 586 unsigned long timeout_ms; 587 const void *private_data; 588 u8 private_data_len; 589 u8 max_cm_retries; 590 }; 591 592 /** 593 * ib_send_cm_sidr_req - Sends a service ID resolution request to the 594 * remote node. 595 * @cm_id: Communication identifier that will be associated with the 596 * service ID resolution request. 597 * @param: Service ID resolution request information. 598 */ 599 int ib_send_cm_sidr_req(struct ib_cm_id *cm_id, 600 struct ib_cm_sidr_req_param *param); 601 602 struct ib_cm_sidr_rep_param { 603 u32 qp_num; 604 u32 qkey; 605 enum ib_cm_sidr_status status; 606 const void *info; 607 u8 info_length; 608 const void *private_data; 609 u8 private_data_len; 610 }; 611 612 /** 613 * ib_send_cm_sidr_rep - Sends a service ID resolution reply to the 614 * remote node. 615 * @cm_id: Communication identifier associated with the received service ID 616 * resolution request. 617 * @param: Service ID resolution reply information. 618 */ 619 int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id, 620 struct ib_cm_sidr_rep_param *param); 621 622 /** 623 * ibcm_reject_msg - return a pointer to a reject message string. 624 * @reason: Value returned in the REJECT event status field. 625 */ 626 const char *__attribute_const__ ibcm_reject_msg(int reason); 627 628 #endif /* IB_CM_H */ 629
