include/rdma/ib_user_verbs.h

   1 /*
   2  * Copyright (c) 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Cisco Systems.  All rights reserved.
   4  * Copyright (c) 2005 PathScale, Inc.  All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  *
  34  * $Id: ib_user_verbs.h 2708 2005-06-24 17:27:21Z roland $
  35  */
  36
  37 #ifndef IB_USER_VERBS_H
  38 #define IB_USER_VERBS_H
  39
  40 #include <linux/types.h>
  41
  42 /*
  43  * Increment this value if any changes that break userspace ABI
  44  * compatibility are made.
  45  */
  46 #define IB_USER_VERBS_ABI_VERSION       3
  47
  48 enum {
  49         IB_USER_VERBS_CMD_GET_CONTEXT,
  50         IB_USER_VERBS_CMD_QUERY_DEVICE,
  51         IB_USER_VERBS_CMD_QUERY_PORT,
  52         IB_USER_VERBS_CMD_ALLOC_PD,
  53         IB_USER_VERBS_CMD_DEALLOC_PD,
  54         IB_USER_VERBS_CMD_CREATE_AH,
  55         IB_USER_VERBS_CMD_MODIFY_AH,
  56         IB_USER_VERBS_CMD_QUERY_AH,
  57         IB_USER_VERBS_CMD_DESTROY_AH,
  58         IB_USER_VERBS_CMD_REG_MR,
  59         IB_USER_VERBS_CMD_REG_SMR,
  60         IB_USER_VERBS_CMD_REREG_MR,
  61         IB_USER_VERBS_CMD_QUERY_MR,
  62         IB_USER_VERBS_CMD_DEREG_MR,
  63         IB_USER_VERBS_CMD_ALLOC_MW,
  64         IB_USER_VERBS_CMD_BIND_MW,
  65         IB_USER_VERBS_CMD_DEALLOC_MW,
  66         IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
  67         IB_USER_VERBS_CMD_CREATE_CQ,
  68         IB_USER_VERBS_CMD_RESIZE_CQ,
  69         IB_USER_VERBS_CMD_DESTROY_CQ,
  70         IB_USER_VERBS_CMD_POLL_CQ,
  71         IB_USER_VERBS_CMD_PEEK_CQ,
  72         IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
  73         IB_USER_VERBS_CMD_CREATE_QP,
  74         IB_USER_VERBS_CMD_QUERY_QP,
  75         IB_USER_VERBS_CMD_MODIFY_QP,
  76         IB_USER_VERBS_CMD_DESTROY_QP,
  77         IB_USER_VERBS_CMD_POST_SEND,
  78         IB_USER_VERBS_CMD_POST_RECV,
  79         IB_USER_VERBS_CMD_ATTACH_MCAST,
  80         IB_USER_VERBS_CMD_DETACH_MCAST,
  81         IB_USER_VERBS_CMD_CREATE_SRQ,
  82         IB_USER_VERBS_CMD_MODIFY_SRQ,
  83         IB_USER_VERBS_CMD_QUERY_SRQ,
  84         IB_USER_VERBS_CMD_DESTROY_SRQ,
  85         IB_USER_VERBS_CMD_POST_SRQ_RECV
  86 };
  87
  88 /*
  89  * Make sure that all structs defined in this file remain laid out so
  90  * that they pack the same way on 32-bit and 64-bit architectures (to
  91  * avoid incompatibility between 32-bit userspace and 64-bit kernels).
  92  * Specifically:
  93  *  - Do not use pointer types -- pass pointers in __u64 instead.
  94  *  - Make sure that any structure larger than 4 bytes is padded to a
  95  *    multiple of 8 bytes.  Otherwise the structure size will be
  96  *    different between 32-bit and 64-bit architectures.
  97  */
  98
  99 struct ib_uverbs_async_event_desc {
 100         __u64 element;
 101         __u32 event_type;       /* enum ib_event_type */
 102         __u32 reserved;
 103 };
 104
 105 struct ib_uverbs_comp_event_desc {
 106         __u64 cq_handle;
 107 };
 108
 109 /*
 110  * All commands from userspace should start with a __u32 command field
 111  * followed by __u16 in_words and out_words fields (which give the
 112  * length of the command block and response buffer if any in 32-bit
 113  * words).  The kernel driver will read these fields first and read
 114  * the rest of the command struct based on these value.
 115  */
 116
 117 struct ib_uverbs_cmd_hdr {
 118         __u32 command;
 119         __u16 in_words;
 120         __u16 out_words;
 121 };
 122
 123 struct ib_uverbs_get_context {
 124         __u64 response;
 125         __u64 driver_data[0];
 126 };
 127
 128 struct ib_uverbs_get_context_resp {
 129         __u32 async_fd;
 130         __u32 num_comp_vectors;
 131 };
 132
 133 struct ib_uverbs_query_device {
 134         __u64 response;
 135         __u64 driver_data[0];
 136 };
 137
 138 struct ib_uverbs_query_device_resp {
 139         __u64 fw_ver;
 140         __be64 node_guid;
 141         __be64 sys_image_guid;
 142         __u64 max_mr_size;
 143         __u64 page_size_cap;
 144         __u32 vendor_id;
 145         __u32 vendor_part_id;
 146         __u32 hw_ver;
 147         __u32 max_qp;
 148         __u32 max_qp_wr;
 149         __u32 device_cap_flags;
 150         __u32 max_sge;
 151         __u32 max_sge_rd;
 152         __u32 max_cq;
 153         __u32 max_cqe;
 154         __u32 max_mr;
 155         __u32 max_pd;
 156         __u32 max_qp_rd_atom;
 157         __u32 max_ee_rd_atom;
 158         __u32 max_res_rd_atom;
 159         __u32 max_qp_init_rd_atom;
 160         __u32 max_ee_init_rd_atom;
 161         __u32 atomic_cap;
 162         __u32 max_ee;
 163         __u32 max_rdd;
 164         __u32 max_mw;
 165         __u32 max_raw_ipv6_qp;
 166         __u32 max_raw_ethy_qp;
 167         __u32 max_mcast_grp;
 168         __u32 max_mcast_qp_attach;
 169         __u32 max_total_mcast_qp_attach;
 170         __u32 max_ah;
 171         __u32 max_fmr;
 172         __u32 max_map_per_fmr;
 173         __u32 max_srq;
 174         __u32 max_srq_wr;
 175         __u32 max_srq_sge;
 176         __u16 max_pkeys;
 177         __u8  local_ca_ack_delay;
 178         __u8  phys_port_cnt;
 179         __u8  reserved[4];
 180 };
 181
 182 struct ib_uverbs_query_port {
 183         __u64 response;
 184         __u8  port_num;
 185         __u8  reserved[7];
 186         __u64 driver_data[0];
 187 };
 188
 189 struct ib_uverbs_query_port_resp {
 190         __u32 port_cap_flags;
 191         __u32 max_msg_sz;
 192         __u32 bad_pkey_cntr;
 193         __u32 qkey_viol_cntr;
 194         __u32 gid_tbl_len;
 195         __u16 pkey_tbl_len;
 196         __u16 lid;
 197         __u16 sm_lid;
 198         __u8  state;
 199         __u8  max_mtu;
 200         __u8  active_mtu;
 201         __u8  lmc;
 202         __u8  max_vl_num;
 203         __u8  sm_sl;
 204         __u8  subnet_timeout;
 205         __u8  init_type_reply;
 206         __u8  active_width;
 207         __u8  active_speed;
 208         __u8  phys_state;
 209         __u8  reserved[3];
 210 };
 211
 212 struct ib_uverbs_alloc_pd {
 213         __u64 response;
 214         __u64 driver_data[0];
 215 };
 216
 217 struct ib_uverbs_alloc_pd_resp {
 218         __u32 pd_handle;
 219 };
 220
 221 struct ib_uverbs_dealloc_pd {
 222         __u32 pd_handle;
 223 };
 224
 225 struct ib_uverbs_reg_mr {
 226         __u64 response;
 227         __u64 start;
 228         __u64 length;
 229         __u64 hca_va;
 230         __u32 pd_handle;
 231         __u32 access_flags;
 232         __u64 driver_data[0];
 233 };
 234
 235 struct ib_uverbs_reg_mr_resp {
 236         __u32 mr_handle;
 237         __u32 lkey;
 238         __u32 rkey;
 239 };
 240
 241 struct ib_uverbs_dereg_mr {
 242         __u32 mr_handle;
 243 };
 244
 245 struct ib_uverbs_create_comp_channel {
 246         __u64 response;
 247 };
 248
 249 struct ib_uverbs_create_comp_channel_resp {
 250         __u32 fd;
 251 };
 252
 253 struct ib_uverbs_create_cq {
 254         __u64 response;
 255         __u64 user_handle;
 256         __u32 cqe;
 257         __u32 comp_vector;
 258         __s32 comp_channel;
 259         __u32 reserved;
 260         __u64 driver_data[0];
 261 };
 262
 263 struct ib_uverbs_create_cq_resp {
 264         __u32 cq_handle;
 265         __u32 cqe;
 266 };
 267
 268 struct ib_uverbs_poll_cq {
 269         __u64 response;
 270         __u32 cq_handle;
 271         __u32 ne;
 272 };
 273
 274 struct ib_uverbs_wc {
 275         __u64 wr_id;
 276         __u32 status;
 277         __u32 opcode;
 278         __u32 vendor_err;
 279         __u32 byte_len;
 280         __u32 imm_data;
 281         __u32 qp_num;
 282         __u32 src_qp;
 283         __u32 wc_flags;
 284         __u16 pkey_index;
 285         __u16 slid;
 286         __u8 sl;
 287         __u8 dlid_path_bits;
 288         __u8 port_num;
 289         __u8 reserved;
 290 };
 291
 292 struct ib_uverbs_poll_cq_resp {
 293         __u32 count;
 294         __u32 reserved;
 295         struct ib_uverbs_wc wc[0];
 296 };
 297
 298 struct ib_uverbs_req_notify_cq {
 299         __u32 cq_handle;
 300         __u32 solicited_only;
 301 };
 302
 303 struct ib_uverbs_destroy_cq {
 304         __u64 response;
 305         __u32 cq_handle;
 306         __u32 reserved;
 307 };
 308
 309 struct ib_uverbs_destroy_cq_resp {
 310         __u32 comp_events_reported;
 311         __u32 async_events_reported;
 312 };
 313
 314 struct ib_uverbs_create_qp {
 315         __u64 response;
 316         __u64 user_handle;
 317         __u32 pd_handle;
 318         __u32 send_cq_handle;
 319         __u32 recv_cq_handle;
 320         __u32 srq_handle;
 321         __u32 max_send_wr;
 322         __u32 max_recv_wr;
 323         __u32 max_send_sge;
 324         __u32 max_recv_sge;
 325         __u32 max_inline_data;
 326         __u8  sq_sig_all;
 327         __u8  qp_type;
 328         __u8  is_srq;
 329         __u8  reserved;
 330         __u64 driver_data[0];
 331 };
 332
 333 struct ib_uverbs_create_qp_resp {
 334         __u32 qp_handle;
 335         __u32 qpn;
 336 };
 337
 338 /*
 339  * This struct needs to remain a multiple of 8 bytes to keep the
 340  * alignment of the modify QP parameters.
 341  */
 342 struct ib_uverbs_qp_dest {
 343         __u8  dgid[16];
 344         __u32 flow_label;
 345         __u16 dlid;
 346         __u16 reserved;
 347         __u8  sgid_index;
 348         __u8  hop_limit;
 349         __u8  traffic_class;
 350         __u8  sl;
 351         __u8  src_path_bits;
 352         __u8  static_rate;
 353         __u8  is_global;
 354         __u8  port_num;
 355 };
 356
 357 struct ib_uverbs_modify_qp {
 358         struct ib_uverbs_qp_dest dest;
 359         struct ib_uverbs_qp_dest alt_dest;
 360         __u32 qp_handle;
 361         __u32 attr_mask;
 362         __u32 qkey;
 363         __u32 rq_psn;
 364         __u32 sq_psn;
 365         __u32 dest_qp_num;
 366         __u32 qp_access_flags;
 367         __u16 pkey_index;
 368         __u16 alt_pkey_index;
 369         __u8  qp_state;
 370         __u8  cur_qp_state;
 371         __u8  path_mtu;
 372         __u8  path_mig_state;
 373         __u8  en_sqd_async_notify;
 374         __u8  max_rd_atomic;
 375         __u8  max_dest_rd_atomic;
 376         __u8  min_rnr_timer;
 377         __u8  port_num;
 378         __u8  timeout;
 379         __u8  retry_cnt;
 380         __u8  rnr_retry;
 381         __u8  alt_port_num;
 382         __u8  alt_timeout;
 383         __u8  reserved[2];
 384         __u64 driver_data[0];
 385 };
 386
 387 struct ib_uverbs_modify_qp_resp {
 388 };
 389
 390 struct ib_uverbs_destroy_qp {
 391         __u64 response;
 392         __u32 qp_handle;
 393         __u32 reserved;
 394 };
 395
 396 struct ib_uverbs_destroy_qp_resp {
 397         __u32 events_reported;
 398 };
 399
 400 /*
 401  * The ib_uverbs_sge structure isn't used anywhere, since we assume
 402  * the ib_sge structure is packed the same way on 32-bit and 64-bit
 403  * architectures in both kernel and user space.  It's just here to
 404  * document the ABI.
 405  */
 406 struct ib_uverbs_sge {
 407         __u64 addr;
 408         __u32 length;
 409         __u32 lkey;
 410 };
 411
 412 struct ib_uverbs_send_wr {
 413         __u64 wr_id;
 414         __u32 num_sge;
 415         __u32 opcode;
 416         __u32 send_flags;
 417         __u32 imm_data;
 418         union {
 419                 struct {
 420                         __u64 remote_addr;
 421                         __u32 rkey;
 422                         __u32 reserved;
 423                 } rdma;
 424                 struct {
 425                         __u64 remote_addr;
 426                         __u64 compare_add;
 427                         __u64 swap;
 428                         __u32 rkey;
 429                         __u32 reserved;
 430                 } atomic;
 431                 struct {
 432                         __u32 ah;
 433                         __u32 remote_qpn;
 434                         __u32 remote_qkey;
 435                         __u32 reserved;
 436                 } ud;
 437         } wr;
 438 };
 439
 440 struct ib_uverbs_post_send {
 441         __u64 response;
 442         __u32 qp_handle;
 443         __u32 wr_count;
 444         __u32 sge_count;
 445         __u32 wqe_size;
 446         struct ib_uverbs_send_wr send_wr[0];
 447 };
 448
 449 struct ib_uverbs_post_send_resp {
 450         __u32 bad_wr;
 451 };
 452
 453 struct ib_uverbs_recv_wr {
 454         __u64 wr_id;
 455         __u32 num_sge;
 456         __u32 reserved;
 457 };
 458
 459 struct ib_uverbs_post_recv {
 460         __u64 response;
 461         __u32 qp_handle;
 462         __u32 wr_count;
 463         __u32 sge_count;
 464         __u32 wqe_size;
 465         struct ib_uverbs_recv_wr recv_wr[0];
 466 };
 467
 468 struct ib_uverbs_post_recv_resp {
 469         __u32 bad_wr;
 470 };
 471
 472 struct ib_uverbs_post_srq_recv {
 473         __u64 response;
 474         __u32 srq_handle;
 475         __u32 wr_count;
 476         __u32 sge_count;
 477         __u32 wqe_size;
 478         struct ib_uverbs_recv_wr recv[0];
 479 };
 480
 481 struct ib_uverbs_post_srq_recv_resp {
 482         __u32 bad_wr;
 483 };
 484
 485 struct ib_uverbs_global_route {
 486         __u8  dgid[16];
 487         __u32 flow_label;
 488         __u8  sgid_index;
 489         __u8  hop_limit;
 490         __u8  traffic_class;
 491         __u8  reserved;
 492 };
 493
 494 struct ib_uverbs_ah_attr {
 495         struct ib_uverbs_global_route grh;
 496         __u16 dlid;
 497         __u8  sl;
 498         __u8  src_path_bits;
 499         __u8  static_rate;
 500         __u8  is_global;
 501         __u8  port_num;
 502         __u8  reserved;
 503 };
 504
 505 struct ib_uverbs_create_ah {
 506         __u64 response;
 507         __u64 user_handle;
 508         __u32 pd_handle;
 509         __u32 reserved;
 510         struct ib_uverbs_ah_attr attr;
 511 };
 512
 513 struct ib_uverbs_create_ah_resp {
 514         __u32 ah_handle;
 515 };
 516
 517 struct ib_uverbs_destroy_ah {
 518         __u32 ah_handle;
 519 };
 520
 521 struct ib_uverbs_attach_mcast {
 522         __u8  gid[16];
 523         __u32 qp_handle;
 524         __u16 mlid;
 525         __u16 reserved;
 526         __u64 driver_data[0];
 527 };
 528
 529 struct ib_uverbs_detach_mcast {
 530         __u8  gid[16];
 531         __u32 qp_handle;
 532         __u16 mlid;
 533         __u16 reserved;
 534         __u64 driver_data[0];
 535 };
 536
 537 struct ib_uverbs_create_srq {
 538         __u64 response;
 539         __u64 user_handle;
 540         __u32 pd_handle;
 541         __u32 max_wr;
 542         __u32 max_sge;
 543         __u32 srq_limit;
 544         __u64 driver_data[0];
 545 };
 546
 547 struct ib_uverbs_create_srq_resp {
 548         __u32 srq_handle;
 549 };
 550
 551 struct ib_uverbs_modify_srq {
 552         __u32 srq_handle;
 553         __u32 attr_mask;
 554         __u32 max_wr;
 555         __u32 max_sge;
 556         __u32 srq_limit;
 557         __u32 reserved;
 558         __u64 driver_data[0];
 559 };
 560
 561 struct ib_uverbs_destroy_srq {
 562         __u64 response;
 563         __u32 srq_handle;
 564         __u32 reserved;
 565 };
 566
 567 struct ib_uverbs_destroy_srq_resp {
 568         __u32 events_reported;
 569 };
 570
 571 #endif /* IB_USER_VERBS_H */