include/uapi/rdma/rdma_user_cm.h

   1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */
   2 /*
   3  * Copyright (c) 2005-2006 Intel Corporation.  All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #ifndef RDMA_USER_CM_H
  35 #define RDMA_USER_CM_H
  36
  37 #include <linux/types.h>
  38 #include <linux/socket.h>
  39 #include <linux/in6.h>
  40 #include <rdma/ib_user_verbs.h>
  41 #include <rdma/ib_user_sa.h>
  42
  43 #define RDMA_USER_CM_ABI_VERSION        4
  44
  45 #define RDMA_MAX_PRIVATE_DATA           256
  46
  47 enum {
  48         RDMA_USER_CM_CMD_CREATE_ID,
  49         RDMA_USER_CM_CMD_DESTROY_ID,
  50         RDMA_USER_CM_CMD_BIND_IP,
  51         RDMA_USER_CM_CMD_RESOLVE_IP,
  52         RDMA_USER_CM_CMD_RESOLVE_ROUTE,
  53         RDMA_USER_CM_CMD_QUERY_ROUTE,
  54         RDMA_USER_CM_CMD_CONNECT,
  55         RDMA_USER_CM_CMD_LISTEN,
  56         RDMA_USER_CM_CMD_ACCEPT,
  57         RDMA_USER_CM_CMD_REJECT,
  58         RDMA_USER_CM_CMD_DISCONNECT,
  59         RDMA_USER_CM_CMD_INIT_QP_ATTR,
  60         RDMA_USER_CM_CMD_GET_EVENT,
  61         RDMA_USER_CM_CMD_GET_OPTION,
  62         RDMA_USER_CM_CMD_SET_OPTION,
  63         RDMA_USER_CM_CMD_NOTIFY,
  64         RDMA_USER_CM_CMD_JOIN_IP_MCAST,
  65         RDMA_USER_CM_CMD_LEAVE_MCAST,
  66         RDMA_USER_CM_CMD_MIGRATE_ID,
  67         RDMA_USER_CM_CMD_QUERY,
  68         RDMA_USER_CM_CMD_BIND,
  69         RDMA_USER_CM_CMD_RESOLVE_ADDR,
  70         RDMA_USER_CM_CMD_JOIN_MCAST
  71 };
  72
  73 /* See IBTA Annex A11, servies ID bytes 4 & 5 */
  74 enum rdma_ucm_port_space {
  75         RDMA_PS_IPOIB = 0x0002,
  76         RDMA_PS_IB    = 0x013F,
  77         RDMA_PS_TCP   = 0x0106,
  78         RDMA_PS_UDP   = 0x0111,
  79 };
  80
  81 /*
  82  * command ABI structures.
  83  */
  84 struct rdma_ucm_cmd_hdr {
  85         __u32 cmd;
  86         __u16 in;
  87         __u16 out;
  88 };
  89
  90 struct rdma_ucm_create_id {
  91         __aligned_u64 uid;
  92         __aligned_u64 response;
  93         __u16 ps;                  /* use enum rdma_ucm_port_space */
  94         __u8  qp_type;
  95         __u8  reserved[5];
  96 };
  97
  98 struct rdma_ucm_create_id_resp {
  99         __u32 id;
 100 };
 101
 102 struct rdma_ucm_destroy_id {
 103         __aligned_u64 response;
 104         __u32 id;
 105         __u32 reserved;
 106 };
 107
 108 struct rdma_ucm_destroy_id_resp {
 109         __u32 events_reported;
 110 };
 111
 112 struct rdma_ucm_bind_ip {
 113         __aligned_u64 response;
 114         struct sockaddr_in6 addr;
 115         __u32 id;
 116 };
 117
 118 struct rdma_ucm_bind {
 119         __u32 id;
 120         __u16 addr_size;
 121         __u16 reserved;
 122         struct __kernel_sockaddr_storage addr;
 123 };
 124
 125 struct rdma_ucm_resolve_ip {
 126         struct sockaddr_in6 src_addr;
 127         struct sockaddr_in6 dst_addr;
 128         __u32 id;
 129         __u32 timeout_ms;
 130 };
 131
 132 struct rdma_ucm_resolve_addr {
 133         __u32 id;
 134         __u32 timeout_ms;
 135         __u16 src_size;
 136         __u16 dst_size;
 137         __u32 reserved;
 138         struct __kernel_sockaddr_storage src_addr;
 139         struct __kernel_sockaddr_storage dst_addr;
 140 };
 141
 142 struct rdma_ucm_resolve_route {
 143         __u32 id;
 144         __u32 timeout_ms;
 145 };
 146
 147 enum {
 148         RDMA_USER_CM_QUERY_ADDR,
 149         RDMA_USER_CM_QUERY_PATH,
 150         RDMA_USER_CM_QUERY_GID
 151 };
 152
 153 struct rdma_ucm_query {
 154         __aligned_u64 response;
 155         __u32 id;
 156         __u32 option;
 157 };
 158
 159 struct rdma_ucm_query_route_resp {
 160         __aligned_u64 node_guid;
 161         struct ib_user_path_rec ib_route[2];
 162         struct sockaddr_in6 src_addr;
 163         struct sockaddr_in6 dst_addr;
 164         __u32 num_paths;
 165         __u8 port_num;
 166         __u8 reserved[3];
 167 };
 168
 169 struct rdma_ucm_query_addr_resp {
 170         __aligned_u64 node_guid;
 171         __u8  port_num;
 172         __u8  reserved;
 173         __u16 pkey;
 174         __u16 src_size;
 175         __u16 dst_size;
 176         struct __kernel_sockaddr_storage src_addr;
 177         struct __kernel_sockaddr_storage dst_addr;
 178 };
 179
 180 struct rdma_ucm_query_path_resp {
 181         __u32 num_paths;
 182         __u32 reserved;
 183         struct ib_path_rec_data path_data[0];
 184 };
 185
 186 struct rdma_ucm_conn_param {
 187         __u32 qp_num;
 188         __u32 qkey;
 189         __u8  private_data[RDMA_MAX_PRIVATE_DATA];
 190         __u8  private_data_len;
 191         __u8  srq;
 192         __u8  responder_resources;
 193         __u8  initiator_depth;
 194         __u8  flow_control;
 195         __u8  retry_count;
 196         __u8  rnr_retry_count;
 197         __u8  valid;
 198 };
 199
 200 struct rdma_ucm_ud_param {
 201         __u32 qp_num;
 202         __u32 qkey;
 203         struct ib_uverbs_ah_attr ah_attr;
 204         __u8  private_data[RDMA_MAX_PRIVATE_DATA];
 205         __u8  private_data_len;
 206         __u8  reserved[7];
 207 };
 208
 209 struct rdma_ucm_connect {
 210         struct rdma_ucm_conn_param conn_param;
 211         __u32 id;
 212         __u32 reserved;
 213 };
 214
 215 struct rdma_ucm_listen {
 216         __u32 id;
 217         __u32 backlog;
 218 };
 219
 220 struct rdma_ucm_accept {
 221         __aligned_u64 uid;
 222         struct rdma_ucm_conn_param conn_param;
 223         __u32 id;
 224         __u32 reserved;
 225 };
 226
 227 struct rdma_ucm_reject {
 228         __u32 id;
 229         __u8  private_data_len;
 230         __u8  reserved[3];
 231         __u8  private_data[RDMA_MAX_PRIVATE_DATA];
 232 };
 233
 234 struct rdma_ucm_disconnect {
 235         __u32 id;
 236 };
 237
 238 struct rdma_ucm_init_qp_attr {
 239         __aligned_u64 response;
 240         __u32 id;
 241         __u32 qp_state;
 242 };
 243
 244 struct rdma_ucm_notify {
 245         __u32 id;
 246         __u32 event;
 247 };
 248
 249 struct rdma_ucm_join_ip_mcast {
 250         __aligned_u64 response;         /* rdma_ucm_create_id_resp */
 251         __aligned_u64 uid;
 252         struct sockaddr_in6 addr;
 253         __u32 id;
 254 };
 255
 256 /* Multicast join flags */
 257 enum {
 258         RDMA_MC_JOIN_FLAG_FULLMEMBER,
 259         RDMA_MC_JOIN_FLAG_SENDONLY_FULLMEMBER,
 260         RDMA_MC_JOIN_FLAG_RESERVED,
 261 };
 262
 263 struct rdma_ucm_join_mcast {
 264         __aligned_u64 response;         /* rdma_ucma_create_id_resp */
 265         __aligned_u64 uid;
 266         __u32 id;
 267         __u16 addr_size;
 268         __u16 join_flags;
 269         struct __kernel_sockaddr_storage addr;
 270 };
 271
 272 struct rdma_ucm_get_event {
 273         __aligned_u64 response;
 274 };
 275
 276 struct rdma_ucm_event_resp {
 277         __aligned_u64 uid;
 278         __u32 id;
 279         __u32 event;
 280         __u32 status;
 281         /*
 282          * NOTE: This union is not aligned to 8 bytes so none of the union
 283          * members may contain a u64 or anything with higher alignment than 4.
 284          */
 285         union {
 286                 struct rdma_ucm_conn_param conn;
 287                 struct rdma_ucm_ud_param   ud;
 288         } param;
 289         __u32 reserved;
 290 };
 291
 292 /* Option levels */
 293 enum {
 294         RDMA_OPTION_ID          = 0,
 295         RDMA_OPTION_IB          = 1
 296 };
 297
 298 /* Option details */
 299 enum {
 300         RDMA_OPTION_ID_TOS       = 0,
 301         RDMA_OPTION_ID_REUSEADDR = 1,
 302         RDMA_OPTION_ID_AFONLY    = 2,
 303         RDMA_OPTION_ID_ACK_TIMEOUT = 3
 304 };
 305
 306 enum {
 307         RDMA_OPTION_IB_PATH      = 1
 308 };
 309
 310 struct rdma_ucm_set_option {
 311         __aligned_u64 optval;
 312         __u32 id;
 313         __u32 level;
 314         __u32 optname;
 315         __u32 optlen;
 316 };
 317
 318 struct rdma_ucm_migrate_id {
 319         __aligned_u64 response;
 320         __u32 id;
 321         __u32 fd;
 322 };
 323
 324 struct rdma_ucm_migrate_resp {
 325         __u32 events_reported;
 326 };
 327
 328 #endif /* RDMA_USER_CM_H */