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