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b97bf3fd PL |
1 | /* |
2 | * net/tipc/netlink.c: TIPC configuration handling | |
c4307285 | 3 | * |
0655f6a8 | 4 | * Copyright (c) 2005-2006, 2014, Ericsson AB |
59f0c452 | 5 | * Copyright (c) 2005-2007, Wind River Systems |
b97bf3fd PL |
6 | * All rights reserved. |
7 | * | |
9ea1fd3c | 8 | * Redistribution and use in source and binary forms, with or without |
b97bf3fd PL |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * | |
9ea1fd3c PL |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. Neither the names of the copyright holders nor the names of its | |
17 | * contributors may be used to endorse or promote products derived from | |
18 | * this software without specific prior written permission. | |
b97bf3fd | 19 | * |
9ea1fd3c PL |
20 | * Alternatively, this software may be distributed under the terms of the |
21 | * GNU General Public License ("GPL") version 2 as published by the Free | |
22 | * Software Foundation. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
b97bf3fd PL |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | */ | |
36 | ||
37 | #include "core.h" | |
34b78a12 | 38 | #include "socket.h" |
1593123a | 39 | #include "name_table.h" |
0655f6a8 | 40 | #include "bearer.h" |
7be57fc6 | 41 | #include "link.h" |
3e4b6ab5 | 42 | #include "node.h" |
fd3cf2ad | 43 | #include "net.h" |
b97bf3fd PL |
44 | #include <net/genetlink.h> |
45 | ||
0655f6a8 RA |
46 | static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = { |
47 | [TIPC_NLA_UNSPEC] = { .type = NLA_UNSPEC, }, | |
48 | [TIPC_NLA_BEARER] = { .type = NLA_NESTED, }, | |
34b78a12 | 49 | [TIPC_NLA_SOCK] = { .type = NLA_NESTED, }, |
7be57fc6 RA |
50 | [TIPC_NLA_PUBL] = { .type = NLA_NESTED, }, |
51 | [TIPC_NLA_LINK] = { .type = NLA_NESTED, }, | |
46f15c67 | 52 | [TIPC_NLA_MEDIA] = { .type = NLA_NESTED, }, |
fd3cf2ad | 53 | [TIPC_NLA_NODE] = { .type = NLA_NESTED, }, |
1593123a RA |
54 | [TIPC_NLA_NET] = { .type = NLA_NESTED, }, |
55 | [TIPC_NLA_NAME_TABLE] = { .type = NLA_NESTED, } | |
0655f6a8 RA |
56 | }; |
57 | ||
49cc66ea RA |
58 | const struct nla_policy |
59 | tipc_nl_name_table_policy[TIPC_NLA_NAME_TABLE_MAX + 1] = { | |
60 | [TIPC_NLA_NAME_TABLE_UNSPEC] = { .type = NLA_UNSPEC }, | |
61 | [TIPC_NLA_NAME_TABLE_PUBL] = { .type = NLA_NESTED } | |
62 | }; | |
63 | ||
64 | const struct nla_policy tipc_nl_sock_policy[TIPC_NLA_SOCK_MAX + 1] = { | |
65 | [TIPC_NLA_SOCK_UNSPEC] = { .type = NLA_UNSPEC }, | |
66 | [TIPC_NLA_SOCK_ADDR] = { .type = NLA_U32 }, | |
67 | [TIPC_NLA_SOCK_REF] = { .type = NLA_U32 }, | |
68 | [TIPC_NLA_SOCK_CON] = { .type = NLA_NESTED }, | |
69 | [TIPC_NLA_SOCK_HAS_PUBL] = { .type = NLA_FLAG } | |
70 | }; | |
71 | ||
72 | const struct nla_policy tipc_nl_net_policy[TIPC_NLA_NET_MAX + 1] = { | |
73 | [TIPC_NLA_NET_UNSPEC] = { .type = NLA_UNSPEC }, | |
74 | [TIPC_NLA_NET_ID] = { .type = NLA_U32 } | |
75 | }; | |
76 | ||
77 | const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = { | |
78 | [TIPC_NLA_LINK_UNSPEC] = { .type = NLA_UNSPEC }, | |
79 | [TIPC_NLA_LINK_NAME] = { .type = NLA_STRING, | |
80 | .len = TIPC_MAX_LINK_NAME }, | |
81 | [TIPC_NLA_LINK_MTU] = { .type = NLA_U32 }, | |
82 | [TIPC_NLA_LINK_BROADCAST] = { .type = NLA_FLAG }, | |
83 | [TIPC_NLA_LINK_UP] = { .type = NLA_FLAG }, | |
84 | [TIPC_NLA_LINK_ACTIVE] = { .type = NLA_FLAG }, | |
85 | [TIPC_NLA_LINK_PROP] = { .type = NLA_NESTED }, | |
86 | [TIPC_NLA_LINK_STATS] = { .type = NLA_NESTED }, | |
87 | [TIPC_NLA_LINK_RX] = { .type = NLA_U32 }, | |
88 | [TIPC_NLA_LINK_TX] = { .type = NLA_U32 } | |
89 | }; | |
90 | ||
91 | const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = { | |
92 | [TIPC_NLA_NODE_UNSPEC] = { .type = NLA_UNSPEC }, | |
93 | [TIPC_NLA_NODE_ADDR] = { .type = NLA_U32 }, | |
94 | [TIPC_NLA_NODE_UP] = { .type = NLA_FLAG } | |
95 | }; | |
96 | ||
97 | /* Properties valid for media, bearer and link */ | |
98 | const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = { | |
99 | [TIPC_NLA_PROP_UNSPEC] = { .type = NLA_UNSPEC }, | |
100 | [TIPC_NLA_PROP_PRIO] = { .type = NLA_U32 }, | |
101 | [TIPC_NLA_PROP_TOL] = { .type = NLA_U32 }, | |
102 | [TIPC_NLA_PROP_WIN] = { .type = NLA_U32 } | |
103 | }; | |
104 | ||
105 | const struct nla_policy tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1] = { | |
106 | [TIPC_NLA_BEARER_UNSPEC] = { .type = NLA_UNSPEC }, | |
107 | [TIPC_NLA_BEARER_NAME] = { .type = NLA_STRING, | |
108 | .len = TIPC_MAX_BEARER_NAME }, | |
109 | [TIPC_NLA_BEARER_PROP] = { .type = NLA_NESTED }, | |
110 | [TIPC_NLA_BEARER_DOMAIN] = { .type = NLA_U32 } | |
111 | }; | |
112 | ||
113 | const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = { | |
114 | [TIPC_NLA_MEDIA_UNSPEC] = { .type = NLA_UNSPEC }, | |
115 | [TIPC_NLA_MEDIA_NAME] = { .type = NLA_STRING }, | |
116 | [TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED } | |
117 | }; | |
118 | ||
119 | const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = { | |
120 | [TIPC_NLA_UDP_UNSPEC] = {.type = NLA_UNSPEC}, | |
121 | [TIPC_NLA_UDP_LOCAL] = {.type = NLA_BINARY, | |
122 | .len = sizeof(struct sockaddr_storage)}, | |
123 | [TIPC_NLA_UDP_REMOTE] = {.type = NLA_BINARY, | |
124 | .len = sizeof(struct sockaddr_storage)}, | |
125 | }; | |
126 | ||
0655f6a8 RA |
127 | /* Users of the legacy API (tipc-config) can't handle that we add operations, |
128 | * so we have a separate genl handling for the new API. | |
129 | */ | |
bfb3e5dd | 130 | struct genl_family tipc_genl_family = { |
0655f6a8 RA |
131 | .id = GENL_ID_GENERATE, |
132 | .name = TIPC_GENL_V2_NAME, | |
133 | .version = TIPC_GENL_V2_VERSION, | |
134 | .hdrsize = 0, | |
135 | .maxattr = TIPC_NLA_MAX, | |
d49e2041 | 136 | .netnsok = true, |
0655f6a8 RA |
137 | }; |
138 | ||
139 | static const struct genl_ops tipc_genl_v2_ops[] = { | |
140 | { | |
141 | .cmd = TIPC_NL_BEARER_DISABLE, | |
142 | .doit = tipc_nl_bearer_disable, | |
143 | .policy = tipc_nl_policy, | |
144 | }, | |
145 | { | |
146 | .cmd = TIPC_NL_BEARER_ENABLE, | |
147 | .doit = tipc_nl_bearer_enable, | |
148 | .policy = tipc_nl_policy, | |
35b9dd76 RA |
149 | }, |
150 | { | |
151 | .cmd = TIPC_NL_BEARER_GET, | |
152 | .doit = tipc_nl_bearer_get, | |
153 | .dumpit = tipc_nl_bearer_dump, | |
154 | .policy = tipc_nl_policy, | |
315c00bc RA |
155 | }, |
156 | { | |
157 | .cmd = TIPC_NL_BEARER_SET, | |
158 | .doit = tipc_nl_bearer_set, | |
159 | .policy = tipc_nl_policy, | |
34b78a12 RA |
160 | }, |
161 | { | |
162 | .cmd = TIPC_NL_SOCK_GET, | |
163 | .dumpit = tipc_nl_sk_dump, | |
164 | .policy = tipc_nl_policy, | |
1a1a143d RA |
165 | }, |
166 | { | |
167 | .cmd = TIPC_NL_PUBL_GET, | |
168 | .dumpit = tipc_nl_publ_dump, | |
169 | .policy = tipc_nl_policy, | |
7be57fc6 RA |
170 | }, |
171 | { | |
172 | .cmd = TIPC_NL_LINK_GET, | |
5be9c086 | 173 | .doit = tipc_nl_node_get_link, |
38206d59 | 174 | .dumpit = tipc_nl_node_dump_link, |
7be57fc6 | 175 | .policy = tipc_nl_policy, |
f96ce7a2 RA |
176 | }, |
177 | { | |
178 | .cmd = TIPC_NL_LINK_SET, | |
5be9c086 | 179 | .doit = tipc_nl_node_set_link, |
f96ce7a2 | 180 | .policy = tipc_nl_policy, |
ae36342b RA |
181 | }, |
182 | { | |
183 | .cmd = TIPC_NL_LINK_RESET_STATS, | |
5be9c086 | 184 | .doit = tipc_nl_node_reset_link_stats, |
ae36342b | 185 | .policy = tipc_nl_policy, |
46f15c67 RA |
186 | }, |
187 | { | |
188 | .cmd = TIPC_NL_MEDIA_GET, | |
189 | .doit = tipc_nl_media_get, | |
190 | .dumpit = tipc_nl_media_dump, | |
191 | .policy = tipc_nl_policy, | |
1e55417d RA |
192 | }, |
193 | { | |
194 | .cmd = TIPC_NL_MEDIA_SET, | |
195 | .doit = tipc_nl_media_set, | |
196 | .policy = tipc_nl_policy, | |
3e4b6ab5 RA |
197 | }, |
198 | { | |
199 | .cmd = TIPC_NL_NODE_GET, | |
200 | .dumpit = tipc_nl_node_dump, | |
201 | .policy = tipc_nl_policy, | |
fd3cf2ad RA |
202 | }, |
203 | { | |
204 | .cmd = TIPC_NL_NET_GET, | |
205 | .dumpit = tipc_nl_net_dump, | |
206 | .policy = tipc_nl_policy, | |
27c21416 RA |
207 | }, |
208 | { | |
209 | .cmd = TIPC_NL_NET_SET, | |
210 | .doit = tipc_nl_net_set, | |
211 | .policy = tipc_nl_policy, | |
1593123a RA |
212 | }, |
213 | { | |
214 | .cmd = TIPC_NL_NAME_TABLE_GET, | |
215 | .dumpit = tipc_nl_name_table_dump, | |
216 | .policy = tipc_nl_policy, | |
0655f6a8 RA |
217 | } |
218 | }; | |
219 | ||
1a1a143d RA |
220 | int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr) |
221 | { | |
bfb3e5dd | 222 | u32 maxattr = tipc_genl_family.maxattr; |
1a1a143d | 223 | |
bfb3e5dd | 224 | *attr = tipc_genl_family.attrbuf; |
1a1a143d RA |
225 | if (!*attr) |
226 | return -EOPNOTSUPP; | |
227 | ||
228 | return nlmsg_parse(nlh, GENL_HDRLEN, *attr, maxattr, tipc_nl_policy); | |
229 | } | |
230 | ||
4323add6 | 231 | int tipc_netlink_start(void) |
b97bf3fd | 232 | { |
acb0a200 | 233 | int res; |
b70e4f45 | 234 | |
bfb3e5dd | 235 | res = genl_register_family_with_ops(&tipc_genl_family, |
0655f6a8 | 236 | tipc_genl_v2_ops); |
acb0a200 | 237 | if (res) { |
2cf8aa19 | 238 | pr_err("Failed to register netlink interface\n"); |
acb0a200 MM |
239 | return res; |
240 | } | |
c4307285 | 241 | return 0; |
b97bf3fd PL |
242 | } |
243 | ||
4323add6 | 244 | void tipc_netlink_stop(void) |
b97bf3fd | 245 | { |
acb0a200 | 246 | genl_unregister_family(&tipc_genl_family); |
b97bf3fd | 247 | } |