IB/uverbs: Return link layer type to userspace for query port operation
[linux-3.10.git] / 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_IB_PATH     = 1
226 };
227
228 struct rdma_ucm_set_option {
229         __u64 optval;
230         __u32 id;
231         __u32 level;
232         __u32 optname;
233         __u32 optlen;
234 };
235
236 struct rdma_ucm_migrate_id {
237         __u64 response;
238         __u32 id;
239         __u32 fd;
240 };
241
242 struct rdma_ucm_migrate_resp {
243         __u32 events_reported;
244 };
245
246 #endif /* RDMA_USER_CM_H */