LXR linux/include/rdma/ib

   1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
   2/*
   3 * Copyright (c) 2004, 2005 Intel Corporation.  All rights reserved.
   4 * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
   5 * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
   6 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   7 * Copyright (c) 2019, Mellanox Technologies inc.  All rights reserved.
   8 */
   9
  10#ifndef IB_CM_H
  11#define IB_CM_H
  12
  13#include <rdma/ib_mad.h>
  14#include <rdma/ib_sa.h>
  15#include <rdma/rdma_cm.h>
  16
  17enum ib_cm_state {
  18        IB_CM_IDLE,
  19        IB_CM_LISTEN,
  20        IB_CM_REQ_SENT,
  21        IB_CM_REQ_RCVD,
  22        IB_CM_MRA_REQ_SENT,
  23        IB_CM_MRA_REQ_RCVD,
  24        IB_CM_REP_SENT,
  25        IB_CM_REP_RCVD,
  26        IB_CM_MRA_REP_SENT,
  27        IB_CM_MRA_REP_RCVD,
  28        IB_CM_ESTABLISHED,
  29        IB_CM_DREQ_SENT,
  30        IB_CM_DREQ_RCVD,
  31        IB_CM_TIMEWAIT,
  32        IB_CM_SIDR_REQ_SENT,
  33        IB_CM_SIDR_REQ_RCVD
  34};
  35
  36enum ib_cm_lap_state {
  37        IB_CM_LAP_UNINIT,
  38        IB_CM_LAP_IDLE,
  39        IB_CM_LAP_SENT,
  40        IB_CM_LAP_RCVD,
  41        IB_CM_MRA_LAP_SENT,
  42        IB_CM_MRA_LAP_RCVD,
  43};
  44
  45enum ib_cm_event_type {
  46        IB_CM_REQ_ERROR,
  47        IB_CM_REQ_RECEIVED,
  48        IB_CM_REP_ERROR,
  49        IB_CM_REP_RECEIVED,
  50        IB_CM_RTU_RECEIVED,
  51        IB_CM_USER_ESTABLISHED,
  52        IB_CM_DREQ_ERROR,
  53        IB_CM_DREQ_RECEIVED,
  54        IB_CM_DREP_RECEIVED,
  55        IB_CM_TIMEWAIT_EXIT,
  56        IB_CM_MRA_RECEIVED,
  57        IB_CM_REJ_RECEIVED,
  58        IB_CM_LAP_ERROR,
  59        IB_CM_LAP_RECEIVED,
  60        IB_CM_APR_RECEIVED,
  61        IB_CM_SIDR_REQ_ERROR,
  62        IB_CM_SIDR_REQ_RECEIVED,
  63        IB_CM_SIDR_REP_RECEIVED
  64};
  65
  66enum ib_cm_data_size {
  67        IB_CM_REQ_PRIVATE_DATA_SIZE      = 92,
  68        IB_CM_MRA_PRIVATE_DATA_SIZE      = 222,
  69        IB_CM_REJ_PRIVATE_DATA_SIZE      = 148,
  70        IB_CM_REP_PRIVATE_DATA_SIZE      = 196,
  71        IB_CM_RTU_PRIVATE_DATA_SIZE      = 224,
  72        IB_CM_DREQ_PRIVATE_DATA_SIZE     = 220,
  73        IB_CM_DREP_PRIVATE_DATA_SIZE     = 224,
  74        IB_CM_REJ_ARI_LENGTH             = 72,
  75        IB_CM_LAP_PRIVATE_DATA_SIZE      = 168,
  76        IB_CM_APR_PRIVATE_DATA_SIZE      = 148,
  77        IB_CM_APR_INFO_LENGTH            = 72,
  78        IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216,
  79        IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136,
  80        IB_CM_SIDR_REP_INFO_LENGTH       = 72,
  81};
  82
  83struct ib_cm_id;
  84
  85struct ib_cm_req_event_param {
  86        struct ib_cm_id         *listen_id;
  87
  88        /* P_Key that was used by the GMP's BTH header */
  89        u16                     bth_pkey;
  90
  91        u8                      port;
  92
  93        struct sa_path_rec      *primary_path;
  94        struct sa_path_rec      *alternate_path;
  95
  96        /*
  97         * SGID attribute of the primary path. Currently only
  98         * useful for RoCE. Alternate path GID attributes
  99         * are not yet supported.
 100         */
 101        const struct ib_gid_attr *ppath_sgid_attr;
 102
 103        __be64                  remote_ca_guid;
 104        u32                     remote_qkey;
 105        u32                     remote_qpn;
 106        enum ib_qp_type         qp_type;
 107
 108        u32                     starting_psn;
 109        u8                      responder_resources;
 110        u8                      initiator_depth;
 111        unsigned int            local_cm_response_timeout:5;
 112        unsigned int            flow_control:1;
 113        unsigned int            remote_cm_response_timeout:5;
 114        unsigned int            retry_count:3;
 115        unsigned int            rnr_retry_count:3;
 116        unsigned int            srq:1;
 117        struct rdma_ucm_ece     ece;
 118};
 119
 120struct ib_cm_rep_event_param {
 121        __be64                  remote_ca_guid;
 122        u32                     remote_qkey;
 123        u32                     remote_qpn;
 124        u32                     starting_psn;
 125        u8                      responder_resources;
 126        u8                      initiator_depth;
 127        unsigned int            target_ack_delay:5;
 128        unsigned int            failover_accepted:2;
 129        unsigned int            flow_control:1;
 130        unsigned int            rnr_retry_count:3;
 131        unsigned int            srq:1;
 132        struct rdma_ucm_ece     ece;
 133};
 134
 135enum ib_cm_rej_reason {
 136        IB_CM_REJ_NO_QP                         = 1,
 137        IB_CM_REJ_NO_EEC                        = 2,
 138        IB_CM_REJ_NO_RESOURCES                  = 3,
 139        IB_CM_REJ_TIMEOUT                       = 4,
 140        IB_CM_REJ_UNSUPPORTED                   = 5,
 141        IB_CM_REJ_INVALID_COMM_ID               = 6,
 142        IB_CM_REJ_INVALID_COMM_INSTANCE         = 7,
 143        IB_CM_REJ_INVALID_SERVICE_ID            = 8,
 144        IB_CM_REJ_INVALID_TRANSPORT_TYPE        = 9,
 145        IB_CM_REJ_STALE_CONN                    = 10,
 146        IB_CM_REJ_RDC_NOT_EXIST                 = 11,
 147        IB_CM_REJ_INVALID_GID                   = 12,
 148        IB_CM_REJ_INVALID_LID                   = 13,
 149        IB_CM_REJ_INVALID_SL                    = 14,
 150        IB_CM_REJ_INVALID_TRAFFIC_CLASS         = 15,
 151        IB_CM_REJ_INVALID_HOP_LIMIT             = 16,
 152        IB_CM_REJ_INVALID_PACKET_RATE           = 17,
 153        IB_CM_REJ_INVALID_ALT_GID               = 18,
 154        IB_CM_REJ_INVALID_ALT_LID               = 19,
 155        IB_CM_REJ_INVALID_ALT_SL                = 20,
 156        IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS     = 21,
 157        IB_CM_REJ_INVALID_ALT_HOP_LIMIT         = 22,
 158        IB_CM_REJ_INVALID_ALT_PACKET_RATE       = 23,
 159        IB_CM_REJ_PORT_CM_REDIRECT              = 24,
 160        IB_CM_REJ_PORT_REDIRECT                 = 25,
 161        IB_CM_REJ_INVALID_MTU                   = 26,
 162        IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES   = 27,
 163        IB_CM_REJ_CONSUMER_DEFINED              = 28,
 164        IB_CM_REJ_INVALID_RNR_RETRY             = 29,
 165        IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID       = 30,
 166        IB_CM_REJ_INVALID_CLASS_VERSION         = 31,
 167        IB_CM_REJ_INVALID_FLOW_LABEL            = 32,
 168        IB_CM_REJ_INVALID_ALT_FLOW_LABEL        = 33,
 169        IB_CM_REJ_VENDOR_OPTION_NOT_SUPPORTED   = 35,
 170};
 171
 172struct ib_cm_rej_event_param {
 173        enum ib_cm_rej_reason   reason;
 174        void                    *ari;
 175        u8                      ari_length;
 176};
 177
 178struct ib_cm_mra_event_param {
 179        u8      service_timeout;
 180};
 181
 182struct ib_cm_lap_event_param {
 183        struct sa_path_rec      *alternate_path;
 184};
 185
 186enum ib_cm_apr_status {
 187        IB_CM_APR_SUCCESS,
 188        IB_CM_APR_INVALID_COMM_ID,
 189        IB_CM_APR_UNSUPPORTED,
 190        IB_CM_APR_REJECT,
 191        IB_CM_APR_REDIRECT,
 192        IB_CM_APR_IS_CURRENT,
 193        IB_CM_APR_INVALID_QPN_EECN,
 194        IB_CM_APR_INVALID_LID,
 195        IB_CM_APR_INVALID_GID,
 196        IB_CM_APR_INVALID_FLOW_LABEL,
 197        IB_CM_APR_INVALID_TCLASS,
 198        IB_CM_APR_INVALID_HOP_LIMIT,
 199        IB_CM_APR_INVALID_PACKET_RATE,
 200        IB_CM_APR_INVALID_SL
 201};
 202
 203struct ib_cm_apr_event_param {
 204        enum ib_cm_apr_status   ap_status;
 205        void                    *apr_info;
 206        u8                      info_len;
 207};
 208
 209struct ib_cm_sidr_req_event_param {
 210        struct ib_cm_id         *listen_id;
 211        __be64                  service_id;
 212
 213        /*
 214         * SGID attribute of the request. Currently only
 215         * useful for RoCE.
 216         */
 217        const struct ib_gid_attr *sgid_attr;
 218        /* P_Key that was used by the GMP's BTH header */
 219        u16                     bth_pkey;
 220        u8                      port;
 221        u16                     pkey;
 222};
 223
 224enum ib_cm_sidr_status {
 225        IB_SIDR_SUCCESS,
 226        IB_SIDR_UNSUPPORTED,
 227        IB_SIDR_REJECT,
 228        IB_SIDR_NO_QP,
 229        IB_SIDR_REDIRECT,
 230        IB_SIDR_UNSUPPORTED_VERSION
 231};
 232
 233struct ib_cm_sidr_rep_event_param {
 234        enum ib_cm_sidr_status  status;
 235        u32                     qkey;
 236        u32                     qpn;
 237        void                    *info;
 238        const struct ib_gid_attr *sgid_attr;
 239        u8                      info_len;
 240};
 241
 242struct ib_cm_event {
 243        enum ib_cm_event_type   event;
 244        union {
 245                struct ib_cm_req_event_param    req_rcvd;
 246                struct ib_cm_rep_event_param    rep_rcvd;
 247                /* No data for RTU received events. */
 248                struct ib_cm_rej_event_param    rej_rcvd;
 249                struct ib_cm_mra_event_param    mra_rcvd;
 250                struct ib_cm_lap_event_param    lap_rcvd;
 251                struct ib_cm_apr_event_param    apr_rcvd;
 252                /* No data for DREQ/DREP received events. */
 253                struct ib_cm_sidr_req_event_param sidr_req_rcvd;
 254                struct ib_cm_sidr_rep_event_param sidr_rep_rcvd;
 255                enum ib_wc_status               send_status;
 256        } param;
 257
 258        void                    *private_data;
 259};
 260
 261#define CM_REQ_ATTR_ID          cpu_to_be16(0x0010)
 262#define CM_MRA_ATTR_ID          cpu_to_be16(0x0011)
 263#define CM_REJ_ATTR_ID          cpu_to_be16(0x0012)
 264#define CM_REP_ATTR_ID          cpu_to_be16(0x0013)
 265#define CM_RTU_ATTR_ID          cpu_to_be16(0x0014)
 266#define CM_DREQ_ATTR_ID         cpu_to_be16(0x0015)
 267#define CM_DREP_ATTR_ID         cpu_to_be16(0x0016)
 268#define CM_SIDR_REQ_ATTR_ID     cpu_to_be16(0x0017)
 269#define CM_SIDR_REP_ATTR_ID     cpu_to_be16(0x0018)
 270#define CM_LAP_ATTR_ID          cpu_to_be16(0x0019)
 271#define CM_APR_ATTR_ID          cpu_to_be16(0x001A)
 272
 273/**
 274 * ib_cm_handler - User-defined callback to process communication events.
 275 * @cm_id: Communication identifier associated with the reported event.
 276 * @event: Information about the communication event.
 277 *
 278 * IB_CM_REQ_RECEIVED and IB_CM_SIDR_REQ_RECEIVED communication events
 279 * generated as a result of listen requests result in the allocation of a
 280 * new @cm_id.  The new @cm_id is returned to the user through this callback.
 281 * Clients are responsible for destroying the new @cm_id.  For peer-to-peer
 282 * IB_CM_REQ_RECEIVED and all other events, the returned @cm_id corresponds
 283 * to a user's existing communication identifier.
 284 *
 285 * Users may not call ib_destroy_cm_id while in the context of this callback;
 286 * however, returning a non-zero value instructs the communication manager to
 287 * destroy the @cm_id after the callback completes.
 288 */
 289typedef int (*ib_cm_handler)(struct ib_cm_id *cm_id,
 290                             const struct ib_cm_event *event);
 291
 292struct ib_cm_id {
 293        ib_cm_handler           cm_handler;
 294        void                    *context;
 295        struct ib_device        *device;
 296        __be64                  service_id;
 297        __be64                  service_mask;
 298        enum ib_cm_state        state;          /* internal CM/debug use */
 299        enum ib_cm_lap_state    lap_state;      /* internal CM/debug use */
 300        __be32                  local_id;
 301        __be32                  remote_id;
 302        u32                     remote_cm_qpn;  /* 1 unless redirected */
 303};
 304
 305/**
 306 * ib_create_cm_id - Allocate a communication identifier.
 307 * @device: Device associated with the cm_id.  All related communication will
 308 * be associated with the specified device.
 309 * @cm_handler: Callback invoked to notify the user of CM events.
 310 * @context: User specified context associated with the communication
 311 *   identifier.
 312 *
 313 * Communication identifiers are used to track connection states, service
 314 * ID resolution requests, and listen requests.
 315 */
 316struct ib_cm_id *ib_create_cm_id(struct ib_device *device,
 317                                 ib_cm_handler cm_handler,
 318                                 void *context);
 319
 320/**
 321 * ib_destroy_cm_id - Destroy a connection identifier.
 322 * @cm_id: Connection identifier to destroy.
 323 *
 324 * This call blocks until the connection identifier is destroyed.
 325 */
 326void ib_destroy_cm_id(struct ib_cm_id *cm_id);
 327
 328#define IB_SERVICE_ID_AGN_MASK  cpu_to_be64(0xFF00000000000000ULL)
 329#define IB_CM_ASSIGN_SERVICE_ID cpu_to_be64(0x0200000000000000ULL)
 330#define IB_CMA_SERVICE_ID       cpu_to_be64(0x0000000001000000ULL)
 331#define IB_CMA_SERVICE_ID_MASK  cpu_to_be64(0xFFFFFFFFFF000000ULL)
 332#define IB_SDP_SERVICE_ID       cpu_to_be64(0x0000000000010000ULL)
 333#define IB_SDP_SERVICE_ID_MASK  cpu_to_be64(0xFFFFFFFFFFFF0000ULL)
 334
 335/**
 336 * ib_cm_listen - Initiates listening on the specified service ID for
 337 *   connection and service ID resolution requests.
 338 * @cm_id: Connection identifier associated with the listen request.
 339 * @service_id: Service identifier matched against incoming connection
 340 *   and service ID resolution requests.  The service ID should be specified
 341 *   network-byte order.  If set to IB_CM_ASSIGN_SERVICE_ID, the CM will
 342 *   assign a service ID to the caller.
 343 * @service_mask: Mask applied to service ID used to listen across a
 344 *   range of service IDs.  If set to 0, the service ID is matched
 345 *   exactly.  This parameter is ignored if %service_id is set to
 346 *   IB_CM_ASSIGN_SERVICE_ID.
 347 */
 348int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id,
 349                 __be64 service_mask);
 350
 351struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device,
 352                                     ib_cm_handler cm_handler,
 353                                     __be64 service_id);
 354
 355struct ib_cm_req_param {
 356        struct sa_path_rec      *primary_path;
 357        struct sa_path_rec      *alternate_path;
 358        const struct ib_gid_attr *ppath_sgid_attr;
 359        __be64                  service_id;
 360        u32                     qp_num;
 361        enum ib_qp_type         qp_type;
 362        u32                     starting_psn;
 363        const void              *private_data;
 364        u8                      private_data_len;
 365        u8                      responder_resources;
 366        u8                      initiator_depth;
 367        u8                      remote_cm_response_timeout;
 368        u8                      flow_control;
 369        u8                      local_cm_response_timeout;
 370        u8                      retry_count;
 371        u8                      rnr_retry_count;
 372        u8                      max_cm_retries;
 373        u8                      srq;
 374        struct rdma_ucm_ece     ece;
 375};
 376
 377/**
 378 * ib_send_cm_req - Sends a connection request to the remote node.
 379 * @cm_id: Connection identifier that will be associated with the
 380 *   connection request.
 381 * @param: Connection request information needed to establish the
 382 *   connection.
 383 */
 384int ib_send_cm_req(struct ib_cm_id *cm_id,
 385                   struct ib_cm_req_param *param);
 386
 387struct ib_cm_rep_param {
 388        u32             qp_num;
 389        u32             starting_psn;
 390        const void      *private_data;
 391        u8              private_data_len;
 392        u8              responder_resources;
 393        u8              initiator_depth;
 394        u8              failover_accepted;
 395        u8              flow_control;
 396        u8              rnr_retry_count;
 397        u8              srq;
 398        struct rdma_ucm_ece ece;
 399};
 400
 401/**
 402 * ib_send_cm_rep - Sends a connection reply in response to a connection
 403 *   request.
 404 * @cm_id: Connection identifier that will be associated with the
 405 *   connection request.
 406 * @param: Connection reply information needed to establish the
 407 *   connection.
 408 */
 409int ib_send_cm_rep(struct ib_cm_id *cm_id,
 410                   struct ib_cm_rep_param *param);
 411
 412/**
 413 * ib_send_cm_rtu - Sends a connection ready to use message in response
 414 *   to a connection reply message.
 415 * @cm_id: Connection identifier associated with the connection request.
 416 * @private_data: Optional user-defined private data sent with the
 417 *   ready to use message.
 418 * @private_data_len: Size of the private data buffer, in bytes.
 419 */
 420int ib_send_cm_rtu(struct ib_cm_id *cm_id,
 421                   const void *private_data,
 422                   u8 private_data_len);
 423
 424/**
 425 * ib_send_cm_dreq - Sends a disconnection request for an existing
 426 *   connection.
 427 * @cm_id: Connection identifier associated with the connection being
 428 *   released.
 429 * @private_data: Optional user-defined private data sent with the
 430 *   disconnection request message.
 431 * @private_data_len: Size of the private data buffer, in bytes.
 432 */
 433int ib_send_cm_dreq(struct ib_cm_id *cm_id,
 434                    const void *private_data,
 435                    u8 private_data_len);
 436
 437/**
 438 * ib_send_cm_drep - Sends a disconnection reply to a disconnection request.
 439 * @cm_id: Connection identifier associated with the connection being
 440 *   released.
 441 * @private_data: Optional user-defined private data sent with the
 442 *   disconnection reply message.
 443 * @private_data_len: Size of the private data buffer, in bytes.
 444 *
 445 * If the cm_id is in the correct state, the CM will transition the connection
 446 * to the timewait state, even if an error occurs sending the DREP message.
 447 */
 448int ib_send_cm_drep(struct ib_cm_id *cm_id,
 449                    const void *private_data,
 450                    u8 private_data_len);
 451
 452/**
 453 * ib_cm_notify - Notifies the CM of an event reported to the consumer.
 454 * @cm_id: Connection identifier to transition to established.
 455 * @event: Type of event.
 456 *
 457 * This routine should be invoked by users to notify the CM of relevant
 458 * communication events.  Events that should be reported to the CM and
 459 * when to report them are:
 460 *
 461 * IB_EVENT_COMM_EST - Used when a message is received on a connected
 462 *    QP before an RTU has been received.
 463 * IB_EVENT_PATH_MIG - Notifies the CM that the connection has failed over
 464 *   to the alternate path.
 465 */
 466int ib_cm_notify(struct ib_cm_id *cm_id, enum ib_event_type event);
 467
 468/**
 469 * ib_send_cm_rej - Sends a connection rejection message to the
 470 *   remote node.
 471 * @cm_id: Connection identifier associated with the connection being
 472 *   rejected.
 473 * @reason: Reason for the connection request rejection.
 474 * @ari: Optional additional rejection information.
 475 * @ari_length: Size of the additional rejection information, in bytes.
 476 * @private_data: Optional user-defined private data sent with the
 477 *   rejection message.
 478 * @private_data_len: Size of the private data buffer, in bytes.
 479 */
 480int ib_send_cm_rej(struct ib_cm_id *cm_id,
 481                   enum ib_cm_rej_reason reason,
 482                   void *ari,
 483                   u8 ari_length,
 484                   const void *private_data,
 485                   u8 private_data_len);
 486
 487#define IB_CM_MRA_FLAG_DELAY 0x80  /* Send MRA only after a duplicate msg */
 488
 489/**
 490 * ib_send_cm_mra - Sends a message receipt acknowledgement to a connection
 491 *   message.
 492 * @cm_id: Connection identifier associated with the connection message.
 493 * @service_timeout: The lower 5-bits specify the maximum time required for
 494 *   the sender to reply to the connection message.  The upper 3-bits
 495 *   specify additional control flags.
 496 * @private_data: Optional user-defined private data sent with the
 497 *   message receipt acknowledgement.
 498 * @private_data_len: Size of the private data buffer, in bytes.
 499 */
 500int ib_send_cm_mra(struct ib_cm_id *cm_id,
 501                   u8 service_timeout,
 502                   const void *private_data,
 503                   u8 private_data_len);
 504
 505/**
 506 * ib_cm_init_qp_attr - Initializes the QP attributes for use in transitioning
 507 *   to a specified QP state.
 508 * @cm_id: Communication identifier associated with the QP attributes to
 509 *   initialize.
 510 * @qp_attr: On input, specifies the desired QP state.  On output, the
 511 *   mandatory and desired optional attributes will be set in order to
 512 *   modify the QP to the specified state.
 513 * @qp_attr_mask: The QP attribute mask that may be used to transition the
 514 *   QP to the specified state.
 515 *
 516 * Users must set the @qp_attr->qp_state to the desired QP state.  This call
 517 * will set all required attributes for the given transition, along with
 518 * known optional attributes.  Users may override the attributes returned from
 519 * this call before calling ib_modify_qp.
 520 */
 521int ib_cm_init_qp_attr(struct ib_cm_id *cm_id,
 522                       struct ib_qp_attr *qp_attr,
 523                       int *qp_attr_mask);
 524
 525struct ib_cm_sidr_req_param {
 526        struct sa_path_rec      *path;
 527        const struct ib_gid_attr *sgid_attr;
 528        __be64                  service_id;
 529        unsigned long           timeout_ms;
 530        const void              *private_data;
 531        u8                      private_data_len;
 532        u8                      max_cm_retries;
 533};
 534
 535/**
 536 * ib_send_cm_sidr_req - Sends a service ID resolution request to the
 537 *   remote node.
 538 * @cm_id: Communication identifier that will be associated with the
 539 *   service ID resolution request.
 540 * @param: Service ID resolution request information.
 541 */
 542int ib_send_cm_sidr_req(struct ib_cm_id *cm_id,
 543                        struct ib_cm_sidr_req_param *param);
 544
 545struct ib_cm_sidr_rep_param {
 546        u32                     qp_num;
 547        u32                     qkey;
 548        enum ib_cm_sidr_status  status;
 549        const void              *info;
 550        u8                      info_length;
 551        const void              *private_data;
 552        u8                      private_data_len;
 553        struct rdma_ucm_ece     ece;
 554};
 555
 556/**
 557 * ib_send_cm_sidr_rep - Sends a service ID resolution reply to the
 558 *   remote node.
 559 * @cm_id: Communication identifier associated with the received service ID
 560 *   resolution request.
 561 * @param: Service ID resolution reply information.
 562 */
 563int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id,
 564                        struct ib_cm_sidr_rep_param *param);
 565
 566/**
 567 * ibcm_reject_msg - return a pointer to a reject message string.
 568 * @reason: Value returned in the REJECT event status field.
 569 */
 570const char *__attribute_const__ ibcm_reject_msg(int reason);
 571
 572#endif /* IB_CM_H */
 573