include/rdma/rdma_user_cm.h

   1 /*
   2  * Copyright (c) 2005-2006 Intel Corporation.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #ifndef RDMA_USER_CM_H
  34 #define RDMA_USER_CM_H
  35
  36 #include <linux/types.h>
  37 #include <linux/in6.h>
  38 #include <rdma/ib_user_verbs.h>
  39 #include <rdma/ib_user_sa.h>
  40
  41 #define RDMA_USER_CM_ABI_VERSION        4
  42
  43 #define RDMA_MAX_PRIVATE_DATA           256
  44
  45 enum {
  46         RDMA_USER_CM_CMD_CREATE_ID,
  47         RDMA_USER_CM_CMD_DESTROY_ID,
  48         RDMA_USER_CM_CMD_BIND_ADDR,
  49         RDMA_USER_CM_CMD_RESOLVE_ADDR,
  50         RDMA_USER_CM_CMD_RESOLVE_ROUTE,
  51         RDMA_USER_CM_CMD_QUERY_ROUTE,
  52         RDMA_USER_CM_CMD_CONNECT,
  53         RDMA_USER_CM_CMD_LISTEN,
  54         RDMA_USER_CM_CMD_ACCEPT,
  55         RDMA_USER_CM_CMD_REJECT,
  56         RDMA_USER_CM_CMD_DISCONNECT,
  57         RDMA_USER_CM_CMD_INIT_QP_ATTR,
  58         RDMA_USER_CM_CMD_GET_EVENT,
  59         RDMA_USER_CM_CMD_GET_OPTION,
  60         RDMA_USER_CM_CMD_SET_OPTION,
  61         RDMA_USER_CM_CMD_NOTIFY,
  62         RDMA_USER_CM_CMD_JOIN_MCAST,
  63         RDMA_USER_CM_CMD_LEAVE_MCAST,
  64         RDMA_USER_CM_CMD_MIGRATE_ID
  65 };
  66
  67 /*
  68  * command ABI structures.
  69  */
  70 struct rdma_ucm_cmd_hdr {
  71         __u32 cmd;
  72         __u16 in;
  73         __u16 out;
  74 };
  75
  76 struct rdma_ucm_create_id {
  77         __u64 uid;
  78         __u64 response;
  79         __u16 ps;
  80         __u8  qp_type;
  81         __u8  reserved[5];
  82 };
  83
  84 struct rdma_ucm_create_id_resp {
  85         __u32 id;
  86 };
  87
  88 struct rdma_ucm_destroy_id {
  89         __u64 response;
  90         __u32 id;
  91         __u32 reserved;
  92 };
  93
  94 struct rdma_ucm_destroy_id_resp {
  95         __u32 events_reported;
  96 };
  97
  98 struct rdma_ucm_bind_addr {
  99         __u64 response;
 100         struct sockaddr_in6 addr;
 101         __u32 id;
 102 };
 103
 104 struct rdma_ucm_resolve_addr {
 105         struct sockaddr_in6 src_addr;
 106         struct sockaddr_in6 dst_addr;
 107         __u32 id;
 108         __u32 timeout_ms;
 109 };
 110
 111 struct rdma_ucm_resolve_route {
 112         __u32 id;
 113         __u32 timeout_ms;
 114 };
 115
 116 struct rdma_ucm_query_route {
 117         __u64 response;
 118         __u32 id;
 119         __u32 reserved;
 120 };
 121
 122 struct rdma_ucm_query_route_resp {
 123         __u64 node_guid;
 124         struct ib_user_path_rec ib_route[2];
 125         struct sockaddr_in6 src_addr;
 126         struct sockaddr_in6 dst_addr;
 127         __u32 num_paths;
 128         __u8 port_num;
 129         __u8 reserved[3];
 130 };
 131
 132 struct rdma_ucm_conn_param {
 133         __u32 qp_num;
 134         __u32 reserved;
 135         __u8  private_data[RDMA_MAX_PRIVATE_DATA];
 136         __u8  private_data_len;
 137         __u8  srq;
 138         __u8  responder_resources;
 139         __u8  initiator_depth;
 140         __u8  flow_control;
 141         __u8  retry_count;
 142         __u8  rnr_retry_count;
 143         __u8  valid;
 144 };
 145
 146 struct rdma_ucm_ud_param {
 147         __u32 qp_num;
 148         __u32 qkey;
 149         struct ib_uverbs_ah_attr ah_attr;
 150         __u8  private_data[RDMA_MAX_PRIVATE_DATA];
 151         __u8  private_data_len;
 152         __u8  reserved[7];
 153 };
 154
 155 struct rdma_ucm_connect {
 156         struct rdma_ucm_conn_param conn_param;
 157         __u32 id;
 158         __u32 reserved;
 159 };
 160
 161 struct rdma_ucm_listen {
 162         __u32 id;
 163         __u32 backlog;
 164 };
 165
 166 struct rdma_ucm_accept {
 167         __u64 uid;
 168         struct rdma_ucm_conn_param conn_param;
 169         __u32 id;
 170         __u32 reserved;
 171 };
 172
 173 struct rdma_ucm_reject {
 174         __u32 id;
 175         __u8  private_data_len;
 176         __u8  reserved[3];
 177         __u8  private_data[RDMA_MAX_PRIVATE_DATA];
 178 };
 179
 180 struct rdma_ucm_disconnect {
 181         __u32 id;
 182 };
 183
 184 struct rdma_ucm_init_qp_attr {
 185         __u64 response;
 186         __u32 id;
 187         __u32 qp_state;
 188 };
 189
 190 struct rdma_ucm_notify {
 191         __u32 id;
 192         __u32 event;
 193 };
 194
 195 struct rdma_ucm_join_mcast {
 196         __u64 response;         /* rdma_ucm_create_id_resp */
 197         __u64 uid;
 198         struct sockaddr_in6 addr;
 199         __u32 id;
 200 };
 201
 202 struct rdma_ucm_get_event {
 203         __u64 response;
 204 };
 205
 206 struct rdma_ucm_event_resp {
 207         __u64 uid;
 208         __u32 id;
 209         __u32 event;
 210         __u32 status;
 211         union {
 212                 struct rdma_ucm_conn_param conn;
 213                 struct rdma_ucm_ud_param   ud;
 214         } param;
 215 };
 216
 217 /* Option levels */
 218 enum {
 219         RDMA_OPTION_ID          = 0,
 220         RDMA_OPTION_IB          = 1
 221 };
 222
 223 /* Option details */
 224 enum {
 225         RDMA_OPTION_ID_TOS       = 0,
 226         RDMA_OPTION_ID_REUSEADDR = 1,
 227         RDMA_OPTION_IB_PATH      = 1
 228 };
 229
 230 struct rdma_ucm_set_option {
 231         __u64 optval;
 232         __u32 id;
 233         __u32 level;
 234         __u32 optname;
 235         __u32 optlen;
 236 };
 237
 238 struct rdma_ucm_migrate_id {
 239         __u64 response;
 240         __u32 id;
 241         __u32 fd;
 242 };
 243
 244 struct rdma_ucm_migrate_resp {
 245         __u32 events_reported;
 246 };
 247
 248 #endif /* RDMA_USER_CM_H */