include/rdma/ib_user_verbs.h

   1 /*
   2  * Copyright (c) 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
   4  * Copyright (c) 2005 PathScale, Inc.  All rights reserved.
   5  * Copyright (c) 2006 Mellanox Technologies.  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
  36 #ifndef IB_USER_VERBS_H
  37 #define IB_USER_VERBS_H
  38
  39 #include <linux/types.h>
  40
  41 /*
  42  * Increment this value if any changes that break userspace ABI
  43  * compatibility are made.
  44  */
  45 #define IB_USER_VERBS_ABI_VERSION       6
  46
  47 enum {
  48         IB_USER_VERBS_CMD_GET_CONTEXT,
  49         IB_USER_VERBS_CMD_QUERY_DEVICE,
  50         IB_USER_VERBS_CMD_QUERY_PORT,
  51         IB_USER_VERBS_CMD_ALLOC_PD,
  52         IB_USER_VERBS_CMD_DEALLOC_PD,
  53         IB_USER_VERBS_CMD_CREATE_AH,
  54         IB_USER_VERBS_CMD_MODIFY_AH,
  55         IB_USER_VERBS_CMD_QUERY_AH,
  56         IB_USER_VERBS_CMD_DESTROY_AH,
  57         IB_USER_VERBS_CMD_REG_MR,
  58         IB_USER_VERBS_CMD_REG_SMR,
  59         IB_USER_VERBS_CMD_REREG_MR,
  60         IB_USER_VERBS_CMD_QUERY_MR,
  61         IB_USER_VERBS_CMD_DEREG_MR,
  62         IB_USER_VERBS_CMD_ALLOC_MW,
  63         IB_USER_VERBS_CMD_BIND_MW,
  64         IB_USER_VERBS_CMD_DEALLOC_MW,
  65         IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
  66         IB_USER_VERBS_CMD_CREATE_CQ,
  67         IB_USER_VERBS_CMD_RESIZE_CQ,
  68         IB_USER_VERBS_CMD_DESTROY_CQ,
  69         IB_USER_VERBS_CMD_POLL_CQ,
  70         IB_USER_VERBS_CMD_PEEK_CQ,
  71         IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
  72         IB_USER_VERBS_CMD_CREATE_QP,
  73         IB_USER_VERBS_CMD_QUERY_QP,
  74         IB_USER_VERBS_CMD_MODIFY_QP,
  75         IB_USER_VERBS_CMD_DESTROY_QP,
  76         IB_USER_VERBS_CMD_POST_SEND,
  77         IB_USER_VERBS_CMD_POST_RECV,
  78         IB_USER_VERBS_CMD_ATTACH_MCAST,
  79         IB_USER_VERBS_CMD_DETACH_MCAST,
  80         IB_USER_VERBS_CMD_CREATE_SRQ,
  81         IB_USER_VERBS_CMD_MODIFY_SRQ,
  82         IB_USER_VERBS_CMD_QUERY_SRQ,
  83         IB_USER_VERBS_CMD_DESTROY_SRQ,
  84         IB_USER_VERBS_CMD_POST_SRQ_RECV,
  85         IB_USER_VERBS_CMD_OPEN_XRCD,
  86         IB_USER_VERBS_CMD_CLOSE_XRCD,
  87         IB_USER_VERBS_CMD_CREATE_XSRQ,
  88         IB_USER_VERBS_CMD_OPEN_QP
  89 };
  90
  91 /*
  92  * Make sure that all structs defined in this file remain laid out so
  93  * that they pack the same way on 32-bit and 64-bit architectures (to
  94  * avoid incompatibility between 32-bit userspace and 64-bit kernels).
  95  * Specifically:
  96  *  - Do not use pointer types -- pass pointers in __u64 instead.
  97  *  - Make sure that any structure larger than 4 bytes is padded to a
  98  *    multiple of 8 bytes.  Otherwise the structure size will be
  99  *    different between 32-bit and 64-bit architectures.
 100  */
 101
 102 struct ib_uverbs_async_event_desc {
 103         __u64 element;
 104         __u32 event_type;       /* enum ib_event_type */
 105         __u32 reserved;
 106 };
 107
 108 struct ib_uverbs_comp_event_desc {
 109         __u64 cq_handle;
 110 };
 111
 112 /*
 113  * All commands from userspace should start with a __u32 command field
 114  * followed by __u16 in_words and out_words fields (which give the
 115  * length of the command block and response buffer if any in 32-bit
 116  * words).  The kernel driver will read these fields first and read
 117  * the rest of the command struct based on these value.
 118  */
 119
 120 struct ib_uverbs_cmd_hdr {
 121         __u32 command;
 122         __u16 in_words;
 123         __u16 out_words;
 124 };
 125
 126 struct ib_uverbs_get_context {
 127         __u64 response;
 128         __u64 driver_data[0];
 129 };
 130
 131 struct ib_uverbs_get_context_resp {
 132         __u32 async_fd;
 133         __u32 num_comp_vectors;
 134 };
 135
 136 struct ib_uverbs_query_device {
 137         __u64 response;
 138         __u64 driver_data[0];
 139 };
 140
 141 struct ib_uverbs_query_device_resp {
 142         __u64 fw_ver;
 143         __be64 node_guid;
 144         __be64 sys_image_guid;
 145         __u64 max_mr_size;
 146         __u64 page_size_cap;
 147         __u32 vendor_id;
 148         __u32 vendor_part_id;
 149         __u32 hw_ver;
 150         __u32 max_qp;
 151         __u32 max_qp_wr;
 152         __u32 device_cap_flags;
 153         __u32 max_sge;
 154         __u32 max_sge_rd;
 155         __u32 max_cq;
 156         __u32 max_cqe;
 157         __u32 max_mr;
 158         __u32 max_pd;
 159         __u32 max_qp_rd_atom;
 160         __u32 max_ee_rd_atom;
 161         __u32 max_res_rd_atom;
 162         __u32 max_qp_init_rd_atom;
 163         __u32 max_ee_init_rd_atom;
 164         __u32 atomic_cap;
 165         __u32 max_ee;
 166         __u32 max_rdd;
 167         __u32 max_mw;
 168         __u32 max_raw_ipv6_qp;
 169         __u32 max_raw_ethy_qp;
 170         __u32 max_mcast_grp;
 171         __u32 max_mcast_qp_attach;
 172         __u32 max_total_mcast_qp_attach;
 173         __u32 max_ah;
 174         __u32 max_fmr;
 175         __u32 max_map_per_fmr;
 176         __u32 max_srq;
 177         __u32 max_srq_wr;
 178         __u32 max_srq_sge;
 179         __u16 max_pkeys;
 180         __u8  local_ca_ack_delay;
 181         __u8  phys_port_cnt;
 182         __u8  reserved[4];
 183 };
 184
 185 struct ib_uverbs_query_port {
 186         __u64 response;
 187         __u8  port_num;
 188         __u8  reserved[7];
 189         __u64 driver_data[0];
 190 };
 191
 192 struct ib_uverbs_query_port_resp {
 193         __u32 port_cap_flags;
 194         __u32 max_msg_sz;
 195         __u32 bad_pkey_cntr;
 196         __u32 qkey_viol_cntr;
 197         __u32 gid_tbl_len;
 198         __u16 pkey_tbl_len;
 199         __u16 lid;
 200         __u16 sm_lid;
 201         __u8  state;
 202         __u8  max_mtu;
 203         __u8  active_mtu;
 204         __u8  lmc;
 205         __u8  max_vl_num;
 206         __u8  sm_sl;
 207         __u8  subnet_timeout;
 208         __u8  init_type_reply;
 209         __u8  active_width;
 210         __u8  active_speed;
 211         __u8  phys_state;
 212         __u8  link_layer;
 213         __u8  reserved[2];
 214 };
 215
 216 struct ib_uverbs_alloc_pd {
 217         __u64 response;
 218         __u64 driver_data[0];
 219 };
 220
 221 struct ib_uverbs_alloc_pd_resp {
 222         __u32 pd_handle;
 223 };
 224
 225 struct ib_uverbs_dealloc_pd {
 226         __u32 pd_handle;
 227 };
 228
 229 struct ib_uverbs_open_xrcd {
 230         __u64 response;
 231         __u32 fd;
 232         __u32 oflags;
 233         __u64 driver_data[0];
 234 };
 235
 236 struct ib_uverbs_open_xrcd_resp {
 237         __u32 xrcd_handle;
 238 };
 239
 240 struct ib_uverbs_close_xrcd {
 241         __u32 xrcd_handle;
 242 };
 243
 244 struct ib_uverbs_reg_mr {
 245         __u64 response;
 246         __u64 start;
 247         __u64 length;
 248         __u64 hca_va;
 249         __u32 pd_handle;
 250         __u32 access_flags;
 251         __u64 driver_data[0];
 252 };
 253
 254 struct ib_uverbs_reg_mr_resp {
 255         __u32 mr_handle;
 256         __u32 lkey;
 257         __u32 rkey;
 258 };
 259
 260 struct ib_uverbs_dereg_mr {
 261         __u32 mr_handle;
 262 };
 263
 264 struct ib_uverbs_create_comp_channel {
 265         __u64 response;
 266 };
 267
 268 struct ib_uverbs_create_comp_channel_resp {
 269         __u32 fd;
 270 };
 271
 272 struct ib_uverbs_create_cq {
 273         __u64 response;
 274         __u64 user_handle;
 275         __u32 cqe;
 276         __u32 comp_vector;
 277         __s32 comp_channel;
 278         __u32 reserved;
 279         __u64 driver_data[0];
 280 };
 281
 282 struct ib_uverbs_create_cq_resp {
 283         __u32 cq_handle;
 284         __u32 cqe;
 285 };
 286
 287 struct ib_uverbs_resize_cq {
 288         __u64 response;
 289         __u32 cq_handle;
 290         __u32 cqe;
 291         __u64 driver_data[0];
 292 };
 293
 294 struct ib_uverbs_resize_cq_resp {
 295         __u32 cqe;
 296         __u32 reserved;
 297         __u64 driver_data[0];
 298 };
 299
 300 struct ib_uverbs_poll_cq {
 301         __u64 response;
 302         __u32 cq_handle;
 303         __u32 ne;
 304 };
 305
 306 struct ib_uverbs_wc {
 307         __u64 wr_id;
 308         __u32 status;
 309         __u32 opcode;
 310         __u32 vendor_err;
 311         __u32 byte_len;
 312         union {
 313                 __u32 imm_data;
 314                 __u32 invalidate_rkey;
 315         } ex;
 316         __u32 qp_num;
 317         __u32 src_qp;
 318         __u32 wc_flags;
 319         __u16 pkey_index;
 320         __u16 slid;
 321         __u8 sl;
 322         __u8 dlid_path_bits;
 323         __u8 port_num;
 324         __u8 reserved;
 325 };
 326
 327 struct ib_uverbs_poll_cq_resp {
 328         __u32 count;
 329         __u32 reserved;
 330         struct ib_uverbs_wc wc[0];
 331 };
 332
 333 struct ib_uverbs_req_notify_cq {
 334         __u32 cq_handle;
 335         __u32 solicited_only;
 336 };
 337
 338 struct ib_uverbs_destroy_cq {
 339         __u64 response;
 340         __u32 cq_handle;
 341         __u32 reserved;
 342 };
 343
 344 struct ib_uverbs_destroy_cq_resp {
 345         __u32 comp_events_reported;
 346         __u32 async_events_reported;
 347 };
 348
 349 struct ib_uverbs_global_route {
 350         __u8  dgid[16];
 351         __u32 flow_label;
 352         __u8  sgid_index;
 353         __u8  hop_limit;
 354         __u8  traffic_class;
 355         __u8  reserved;
 356 };
 357
 358 struct ib_uverbs_ah_attr {
 359         struct ib_uverbs_global_route grh;
 360         __u16 dlid;
 361         __u8  sl;
 362         __u8  src_path_bits;
 363         __u8  static_rate;
 364         __u8  is_global;
 365         __u8  port_num;
 366         __u8  reserved;
 367 };
 368
 369 struct ib_uverbs_qp_attr {
 370         __u32   qp_attr_mask;
 371         __u32   qp_state;
 372         __u32   cur_qp_state;
 373         __u32   path_mtu;
 374         __u32   path_mig_state;
 375         __u32   qkey;
 376         __u32   rq_psn;
 377         __u32   sq_psn;
 378         __u32   dest_qp_num;
 379         __u32   qp_access_flags;
 380
 381         struct ib_uverbs_ah_attr ah_attr;
 382         struct ib_uverbs_ah_attr alt_ah_attr;
 383
 384         /* ib_qp_cap */
 385         __u32   max_send_wr;
 386         __u32   max_recv_wr;
 387         __u32   max_send_sge;
 388         __u32   max_recv_sge;
 389         __u32   max_inline_data;
 390
 391         __u16   pkey_index;
 392         __u16   alt_pkey_index;
 393         __u8    en_sqd_async_notify;
 394         __u8    sq_draining;
 395         __u8    max_rd_atomic;
 396         __u8    max_dest_rd_atomic;
 397         __u8    min_rnr_timer;
 398         __u8    port_num;
 399         __u8    timeout;
 400         __u8    retry_cnt;
 401         __u8    rnr_retry;
 402         __u8    alt_port_num;
 403         __u8    alt_timeout;
 404         __u8    reserved[5];
 405 };
 406
 407 struct ib_uverbs_create_qp {
 408         __u64 response;
 409         __u64 user_handle;
 410         __u32 pd_handle;
 411         __u32 send_cq_handle;
 412         __u32 recv_cq_handle;
 413         __u32 srq_handle;
 414         __u32 max_send_wr;
 415         __u32 max_recv_wr;
 416         __u32 max_send_sge;
 417         __u32 max_recv_sge;
 418         __u32 max_inline_data;
 419         __u8  sq_sig_all;
 420         __u8  qp_type;
 421         __u8  is_srq;
 422         __u8  reserved;
 423         __u64 driver_data[0];
 424 };
 425
 426 struct ib_uverbs_open_qp {
 427         __u64 response;
 428         __u64 user_handle;
 429         __u32 pd_handle;
 430         __u32 qpn;
 431         __u8  qp_type;
 432         __u8  reserved[7];
 433         __u64 driver_data[0];
 434 };
 435
 436 /* also used for open response */
 437 struct ib_uverbs_create_qp_resp {
 438         __u32 qp_handle;
 439         __u32 qpn;
 440         __u32 max_send_wr;
 441         __u32 max_recv_wr;
 442         __u32 max_send_sge;
 443         __u32 max_recv_sge;
 444         __u32 max_inline_data;
 445         __u32 reserved;
 446 };
 447
 448 /*
 449  * This struct needs to remain a multiple of 8 bytes to keep the
 450  * alignment of the modify QP parameters.
 451  */
 452 struct ib_uverbs_qp_dest {
 453         __u8  dgid[16];
 454         __u32 flow_label;
 455         __u16 dlid;
 456         __u16 reserved;
 457         __u8  sgid_index;
 458         __u8  hop_limit;
 459         __u8  traffic_class;
 460         __u8  sl;
 461         __u8  src_path_bits;
 462         __u8  static_rate;
 463         __u8  is_global;
 464         __u8  port_num;
 465 };
 466
 467 struct ib_uverbs_query_qp {
 468         __u64 response;
 469         __u32 qp_handle;
 470         __u32 attr_mask;
 471         __u64 driver_data[0];
 472 };
 473
 474 struct ib_uverbs_query_qp_resp {
 475         struct ib_uverbs_qp_dest dest;
 476         struct ib_uverbs_qp_dest alt_dest;
 477         __u32 max_send_wr;
 478         __u32 max_recv_wr;
 479         __u32 max_send_sge;
 480         __u32 max_recv_sge;
 481         __u32 max_inline_data;
 482         __u32 qkey;
 483         __u32 rq_psn;
 484         __u32 sq_psn;
 485         __u32 dest_qp_num;
 486         __u32 qp_access_flags;
 487         __u16 pkey_index;
 488         __u16 alt_pkey_index;
 489         __u8  qp_state;
 490         __u8  cur_qp_state;
 491         __u8  path_mtu;
 492         __u8  path_mig_state;
 493         __u8  sq_draining;
 494         __u8  max_rd_atomic;
 495         __u8  max_dest_rd_atomic;
 496         __u8  min_rnr_timer;
 497         __u8  port_num;
 498         __u8  timeout;
 499         __u8  retry_cnt;
 500         __u8  rnr_retry;
 501         __u8  alt_port_num;
 502         __u8  alt_timeout;
 503         __u8  sq_sig_all;
 504         __u8  reserved[5];
 505         __u64 driver_data[0];
 506 };
 507
 508 struct ib_uverbs_modify_qp {
 509         struct ib_uverbs_qp_dest dest;
 510         struct ib_uverbs_qp_dest alt_dest;
 511         __u32 qp_handle;
 512         __u32 attr_mask;
 513         __u32 qkey;
 514         __u32 rq_psn;
 515         __u32 sq_psn;
 516         __u32 dest_qp_num;
 517         __u32 qp_access_flags;
 518         __u16 pkey_index;
 519         __u16 alt_pkey_index;
 520         __u8  qp_state;
 521         __u8  cur_qp_state;
 522         __u8  path_mtu;
 523         __u8  path_mig_state;
 524         __u8  en_sqd_async_notify;
 525         __u8  max_rd_atomic;
 526         __u8  max_dest_rd_atomic;
 527         __u8  min_rnr_timer;
 528         __u8  port_num;
 529         __u8  timeout;
 530         __u8  retry_cnt;
 531         __u8  rnr_retry;
 532         __u8  alt_port_num;
 533         __u8  alt_timeout;
 534         __u8  reserved[2];
 535         __u64 driver_data[0];
 536 };
 537
 538 struct ib_uverbs_modify_qp_resp {
 539 };
 540
 541 struct ib_uverbs_destroy_qp {
 542         __u64 response;
 543         __u32 qp_handle;
 544         __u32 reserved;
 545 };
 546
 547 struct ib_uverbs_destroy_qp_resp {
 548         __u32 events_reported;
 549 };
 550
 551 /*
 552  * The ib_uverbs_sge structure isn't used anywhere, since we assume
 553  * the ib_sge structure is packed the same way on 32-bit and 64-bit
 554  * architectures in both kernel and user space.  It's just here to
 555  * document the ABI.
 556  */
 557 struct ib_uverbs_sge {
 558         __u64 addr;
 559         __u32 length;
 560         __u32 lkey;
 561 };
 562
 563 struct ib_uverbs_send_wr {
 564         __u64 wr_id;
 565         __u32 num_sge;
 566         __u32 opcode;
 567         __u32 send_flags;
 568         union {
 569                 __u32 imm_data;
 570                 __u32 invalidate_rkey;
 571         } ex;
 572         union {
 573                 struct {
 574                         __u64 remote_addr;
 575                         __u32 rkey;
 576                         __u32 reserved;
 577                 } rdma;
 578                 struct {
 579                         __u64 remote_addr;
 580                         __u64 compare_add;
 581                         __u64 swap;
 582                         __u32 rkey;
 583                         __u32 reserved;
 584                 } atomic;
 585                 struct {
 586                         __u32 ah;
 587                         __u32 remote_qpn;
 588                         __u32 remote_qkey;
 589                         __u32 reserved;
 590                 } ud;
 591         } wr;
 592 };
 593
 594 struct ib_uverbs_post_send {
 595         __u64 response;
 596         __u32 qp_handle;
 597         __u32 wr_count;
 598         __u32 sge_count;
 599         __u32 wqe_size;
 600         struct ib_uverbs_send_wr send_wr[0];
 601 };
 602
 603 struct ib_uverbs_post_send_resp {
 604         __u32 bad_wr;
 605 };
 606
 607 struct ib_uverbs_recv_wr {
 608         __u64 wr_id;
 609         __u32 num_sge;
 610         __u32 reserved;
 611 };
 612
 613 struct ib_uverbs_post_recv {
 614         __u64 response;
 615         __u32 qp_handle;
 616         __u32 wr_count;
 617         __u32 sge_count;
 618         __u32 wqe_size;
 619         struct ib_uverbs_recv_wr recv_wr[0];
 620 };
 621
 622 struct ib_uverbs_post_recv_resp {
 623         __u32 bad_wr;
 624 };
 625
 626 struct ib_uverbs_post_srq_recv {
 627         __u64 response;
 628         __u32 srq_handle;
 629         __u32 wr_count;
 630         __u32 sge_count;
 631         __u32 wqe_size;
 632         struct ib_uverbs_recv_wr recv[0];
 633 };
 634
 635 struct ib_uverbs_post_srq_recv_resp {
 636         __u32 bad_wr;
 637 };
 638
 639 struct ib_uverbs_create_ah {
 640         __u64 response;
 641         __u64 user_handle;
 642         __u32 pd_handle;
 643         __u32 reserved;
 644         struct ib_uverbs_ah_attr attr;
 645 };
 646
 647 struct ib_uverbs_create_ah_resp {
 648         __u32 ah_handle;
 649 };
 650
 651 struct ib_uverbs_destroy_ah {
 652         __u32 ah_handle;
 653 };
 654
 655 struct ib_uverbs_attach_mcast {
 656         __u8  gid[16];
 657         __u32 qp_handle;
 658         __u16 mlid;
 659         __u16 reserved;
 660         __u64 driver_data[0];
 661 };
 662
 663 struct ib_uverbs_detach_mcast {
 664         __u8  gid[16];
 665         __u32 qp_handle;
 666         __u16 mlid;
 667         __u16 reserved;
 668         __u64 driver_data[0];
 669 };
 670
 671 struct ib_uverbs_create_srq {
 672         __u64 response;
 673         __u64 user_handle;
 674         __u32 pd_handle;
 675         __u32 max_wr;
 676         __u32 max_sge;
 677         __u32 srq_limit;
 678         __u64 driver_data[0];
 679 };
 680
 681 struct ib_uverbs_create_xsrq {
 682         __u64 response;
 683         __u64 user_handle;
 684         __u32 srq_type;
 685         __u32 pd_handle;
 686         __u32 max_wr;
 687         __u32 max_sge;
 688         __u32 srq_limit;
 689         __u32 reserved;
 690         __u32 xrcd_handle;
 691         __u32 cq_handle;
 692         __u64 driver_data[0];
 693 };
 694
 695 struct ib_uverbs_create_srq_resp {
 696         __u32 srq_handle;
 697         __u32 max_wr;
 698         __u32 max_sge;
 699         __u32 srqn;
 700 };
 701
 702 struct ib_uverbs_modify_srq {
 703         __u32 srq_handle;
 704         __u32 attr_mask;
 705         __u32 max_wr;
 706         __u32 srq_limit;
 707         __u64 driver_data[0];
 708 };
 709
 710 struct ib_uverbs_query_srq {
 711         __u64 response;
 712         __u32 srq_handle;
 713         __u32 reserved;
 714         __u64 driver_data[0];
 715 };
 716
 717 struct ib_uverbs_query_srq_resp {
 718         __u32 max_wr;
 719         __u32 max_sge;
 720         __u32 srq_limit;
 721         __u32 reserved;
 722 };
 723
 724 struct ib_uverbs_destroy_srq {
 725         __u64 response;
 726         __u32 srq_handle;
 727         __u32 reserved;
 728 };
 729
 730 struct ib_uverbs_destroy_srq_resp {
 731         __u32 events_reported;
 732 };
 733
 734 #endif /* IB_USER_VERBS_H */