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  reserved[6];
  81 };
  82
  83 struct rdma_ucm_create_id_resp {
  84         __u32 id;
  85 };
  86
  87 struct rdma_ucm_destroy_id {
  88         __u64 response;
  89         __u32 id;
  90         __u32 reserved;
  91 };
  92
  93 struct rdma_ucm_destroy_id_resp {
  94         __u32 events_reported;
  95 };
  96
  97 struct rdma_ucm_bind_addr {
  98         __u64 response;
  99         struct sockaddr_in6 addr;
 100         __u32 id;
 101 };
 102
 103 struct rdma_ucm_resolve_addr {
 104         struct sockaddr_in6 src_addr;
 105         struct sockaddr_in6 dst_addr;
 106         __u32 id;
 107         __u32 timeout_ms;
 108 };
 109
 110 struct rdma_ucm_resolve_route {
 111         __u32 id;
 112         __u32 timeout_ms;
 113 };
 114
 115 struct rdma_ucm_query_route {
 116         __u64 response;
 117         __u32 id;
 118         __u32 reserved;
 119 };
 120
 121 struct rdma_ucm_query_route_resp {
 122         __u64 node_guid;
 123         struct ib_user_path_rec ib_route[2];
 124         struct sockaddr_in6 src_addr;
 125         struct sockaddr_in6 dst_addr;
 126         __u32 num_paths;
 127         __u8 port_num;
 128         __u8 reserved[3];
 129 };
 130
 131 struct rdma_ucm_conn_param {
 132         __u32 qp_num;
 133         __u32 reserved;
 134         __u8  private_data[RDMA_MAX_PRIVATE_DATA];
 135         __u8  private_data_len;
 136         __u8  srq;
 137         __u8  responder_resources;
 138         __u8  initiator_depth;
 139         __u8  flow_control;
 140         __u8  retry_count;
 141         __u8  rnr_retry_count;
 142         __u8  valid;
 143 };
 144
 145 struct rdma_ucm_ud_param {
 146         __u32 qp_num;
 147         __u32 qkey;
 148         struct ib_uverbs_ah_attr ah_attr;
 149         __u8  private_data[RDMA_MAX_PRIVATE_DATA];
 150         __u8  private_data_len;
 151         __u8  reserved[7];
 152 };
 153
 154 struct rdma_ucm_connect {
 155         struct rdma_ucm_conn_param conn_param;
 156         __u32 id;
 157         __u32 reserved;
 158 };
 159
 160 struct rdma_ucm_listen {
 161         __u32 id;
 162         __u32 backlog;
 163 };
 164
 165 struct rdma_ucm_accept {
 166         __u64 uid;
 167         struct rdma_ucm_conn_param conn_param;
 168         __u32 id;
 169         __u32 reserved;
 170 };
 171
 172 struct rdma_ucm_reject {
 173         __u32 id;
 174         __u8  private_data_len;
 175         __u8  reserved[3];
 176         __u8  private_data[RDMA_MAX_PRIVATE_DATA];
 177 };
 178
 179 struct rdma_ucm_disconnect {
 180         __u32 id;
 181 };
 182
 183 struct rdma_ucm_init_qp_attr {
 184         __u64 response;
 185         __u32 id;
 186         __u32 qp_state;
 187 };
 188
 189 struct rdma_ucm_notify {
 190         __u32 id;
 191         __u32 event;
 192 };
 193
 194 struct rdma_ucm_join_mcast {
 195         __u64 response;         /* rdma_ucm_create_id_resp */
 196         __u64 uid;
 197         struct sockaddr_in6 addr;
 198         __u32 id;
 199 };
 200
 201 struct rdma_ucm_get_event {
 202         __u64 response;
 203 };
 204
 205 struct rdma_ucm_event_resp {
 206         __u64 uid;
 207         __u32 id;
 208         __u32 event;
 209         __u32 status;
 210         union {
 211                 struct rdma_ucm_conn_param conn;
 212                 struct rdma_ucm_ud_param   ud;
 213         } param;
 214 };
 215
 216 /* Option levels */
 217 enum {
 218         RDMA_OPTION_ID          = 0,
 219         RDMA_OPTION_IB          = 1
 220 };
 221
 222 /* Option details */
 223 enum {
 224         RDMA_OPTION_ID_TOS       = 0,
 225         RDMA_OPTION_ID_REUSEADDR = 1,
 226         RDMA_OPTION_IB_PATH      = 1
 227 };
 228
 229 struct rdma_ucm_set_option {
 230         __u64 optval;
 231         __u32 id;
 232         __u32 level;
 233         __u32 optname;
 234         __u32 optlen;
 235 };
 236
 237 struct rdma_ucm_migrate_id {
 238         __u64 response;
 239         __u32 id;
 240         __u32 fd;
 241 };
 242
 243 struct rdma_ucm_migrate_resp {
 244         __u32 events_reported;
 245 };
 246
 247 #endif /* RDMA_USER_CM_H */