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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" |
832629ca | 44 | #include "udp_media.h" |
b97bf3fd PL |
45 | #include <net/genetlink.h> |
46 | ||
0655f6a8 RA |
47 | static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = { |
48 | [TIPC_NLA_UNSPEC] = { .type = NLA_UNSPEC, }, | |
49 | [TIPC_NLA_BEARER] = { .type = NLA_NESTED, }, | |
34b78a12 | 50 | [TIPC_NLA_SOCK] = { .type = NLA_NESTED, }, |
7be57fc6 RA |
51 | [TIPC_NLA_PUBL] = { .type = NLA_NESTED, }, |
52 | [TIPC_NLA_LINK] = { .type = NLA_NESTED, }, | |
46f15c67 | 53 | [TIPC_NLA_MEDIA] = { .type = NLA_NESTED, }, |
fd3cf2ad | 54 | [TIPC_NLA_NODE] = { .type = NLA_NESTED, }, |
1593123a | 55 | [TIPC_NLA_NET] = { .type = NLA_NESTED, }, |
7b3f5229 PB |
56 | [TIPC_NLA_NAME_TABLE] = { .type = NLA_NESTED, }, |
57 | [TIPC_NLA_MON] = { .type = NLA_NESTED, }, | |
0655f6a8 RA |
58 | }; |
59 | ||
49cc66ea RA |
60 | const struct nla_policy |
61 | tipc_nl_name_table_policy[TIPC_NLA_NAME_TABLE_MAX + 1] = { | |
62 | [TIPC_NLA_NAME_TABLE_UNSPEC] = { .type = NLA_UNSPEC }, | |
63 | [TIPC_NLA_NAME_TABLE_PUBL] = { .type = NLA_NESTED } | |
64 | }; | |
65 | ||
7b3f5229 PB |
66 | const struct nla_policy tipc_nl_monitor_policy[TIPC_NLA_MON_MAX + 1] = { |
67 | [TIPC_NLA_MON_UNSPEC] = { .type = NLA_UNSPEC }, | |
cf6f7e1d | 68 | [TIPC_NLA_MON_REF] = { .type = NLA_U32 }, |
7b3f5229 PB |
69 | [TIPC_NLA_MON_ACTIVATION_THRESHOLD] = { .type = NLA_U32 }, |
70 | }; | |
71 | ||
49cc66ea RA |
72 | const struct nla_policy tipc_nl_sock_policy[TIPC_NLA_SOCK_MAX + 1] = { |
73 | [TIPC_NLA_SOCK_UNSPEC] = { .type = NLA_UNSPEC }, | |
74 | [TIPC_NLA_SOCK_ADDR] = { .type = NLA_U32 }, | |
75 | [TIPC_NLA_SOCK_REF] = { .type = NLA_U32 }, | |
76 | [TIPC_NLA_SOCK_CON] = { .type = NLA_NESTED }, | |
77 | [TIPC_NLA_SOCK_HAS_PUBL] = { .type = NLA_FLAG } | |
78 | }; | |
79 | ||
80 | const struct nla_policy tipc_nl_net_policy[TIPC_NLA_NET_MAX + 1] = { | |
81 | [TIPC_NLA_NET_UNSPEC] = { .type = NLA_UNSPEC }, | |
82 | [TIPC_NLA_NET_ID] = { .type = NLA_U32 } | |
83 | }; | |
84 | ||
85 | const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = { | |
86 | [TIPC_NLA_LINK_UNSPEC] = { .type = NLA_UNSPEC }, | |
87 | [TIPC_NLA_LINK_NAME] = { .type = NLA_STRING, | |
88 | .len = TIPC_MAX_LINK_NAME }, | |
89 | [TIPC_NLA_LINK_MTU] = { .type = NLA_U32 }, | |
90 | [TIPC_NLA_LINK_BROADCAST] = { .type = NLA_FLAG }, | |
91 | [TIPC_NLA_LINK_UP] = { .type = NLA_FLAG }, | |
92 | [TIPC_NLA_LINK_ACTIVE] = { .type = NLA_FLAG }, | |
93 | [TIPC_NLA_LINK_PROP] = { .type = NLA_NESTED }, | |
94 | [TIPC_NLA_LINK_STATS] = { .type = NLA_NESTED }, | |
95 | [TIPC_NLA_LINK_RX] = { .type = NLA_U32 }, | |
96 | [TIPC_NLA_LINK_TX] = { .type = NLA_U32 } | |
97 | }; | |
98 | ||
99 | const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = { | |
100 | [TIPC_NLA_NODE_UNSPEC] = { .type = NLA_UNSPEC }, | |
101 | [TIPC_NLA_NODE_ADDR] = { .type = NLA_U32 }, | |
102 | [TIPC_NLA_NODE_UP] = { .type = NLA_FLAG } | |
103 | }; | |
104 | ||
105 | /* Properties valid for media, bearer and link */ | |
106 | const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = { | |
107 | [TIPC_NLA_PROP_UNSPEC] = { .type = NLA_UNSPEC }, | |
108 | [TIPC_NLA_PROP_PRIO] = { .type = NLA_U32 }, | |
109 | [TIPC_NLA_PROP_TOL] = { .type = NLA_U32 }, | |
110 | [TIPC_NLA_PROP_WIN] = { .type = NLA_U32 } | |
111 | }; | |
112 | ||
113 | const struct nla_policy tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1] = { | |
114 | [TIPC_NLA_BEARER_UNSPEC] = { .type = NLA_UNSPEC }, | |
115 | [TIPC_NLA_BEARER_NAME] = { .type = NLA_STRING, | |
116 | .len = TIPC_MAX_BEARER_NAME }, | |
117 | [TIPC_NLA_BEARER_PROP] = { .type = NLA_NESTED }, | |
118 | [TIPC_NLA_BEARER_DOMAIN] = { .type = NLA_U32 } | |
119 | }; | |
120 | ||
121 | const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = { | |
122 | [TIPC_NLA_MEDIA_UNSPEC] = { .type = NLA_UNSPEC }, | |
123 | [TIPC_NLA_MEDIA_NAME] = { .type = NLA_STRING }, | |
124 | [TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED } | |
125 | }; | |
126 | ||
127 | const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = { | |
128 | [TIPC_NLA_UDP_UNSPEC] = {.type = NLA_UNSPEC}, | |
129 | [TIPC_NLA_UDP_LOCAL] = {.type = NLA_BINARY, | |
130 | .len = sizeof(struct sockaddr_storage)}, | |
131 | [TIPC_NLA_UDP_REMOTE] = {.type = NLA_BINARY, | |
132 | .len = sizeof(struct sockaddr_storage)}, | |
133 | }; | |
134 | ||
0655f6a8 RA |
135 | /* Users of the legacy API (tipc-config) can't handle that we add operations, |
136 | * so we have a separate genl handling for the new API. | |
137 | */ | |
0655f6a8 RA |
138 | static const struct genl_ops tipc_genl_v2_ops[] = { |
139 | { | |
140 | .cmd = TIPC_NL_BEARER_DISABLE, | |
141 | .doit = tipc_nl_bearer_disable, | |
142 | .policy = tipc_nl_policy, | |
143 | }, | |
144 | { | |
145 | .cmd = TIPC_NL_BEARER_ENABLE, | |
146 | .doit = tipc_nl_bearer_enable, | |
147 | .policy = tipc_nl_policy, | |
35b9dd76 RA |
148 | }, |
149 | { | |
150 | .cmd = TIPC_NL_BEARER_GET, | |
151 | .doit = tipc_nl_bearer_get, | |
152 | .dumpit = tipc_nl_bearer_dump, | |
153 | .policy = tipc_nl_policy, | |
315c00bc | 154 | }, |
ef20cd4d RA |
155 | { |
156 | .cmd = TIPC_NL_BEARER_ADD, | |
157 | .doit = tipc_nl_bearer_add, | |
158 | .policy = tipc_nl_policy, | |
159 | }, | |
315c00bc RA |
160 | { |
161 | .cmd = TIPC_NL_BEARER_SET, | |
162 | .doit = tipc_nl_bearer_set, | |
163 | .policy = tipc_nl_policy, | |
34b78a12 RA |
164 | }, |
165 | { | |
166 | .cmd = TIPC_NL_SOCK_GET, | |
167 | .dumpit = tipc_nl_sk_dump, | |
168 | .policy = tipc_nl_policy, | |
1a1a143d RA |
169 | }, |
170 | { | |
171 | .cmd = TIPC_NL_PUBL_GET, | |
172 | .dumpit = tipc_nl_publ_dump, | |
173 | .policy = tipc_nl_policy, | |
7be57fc6 RA |
174 | }, |
175 | { | |
176 | .cmd = TIPC_NL_LINK_GET, | |
5be9c086 | 177 | .doit = tipc_nl_node_get_link, |
38206d59 | 178 | .dumpit = tipc_nl_node_dump_link, |
7be57fc6 | 179 | .policy = tipc_nl_policy, |
f96ce7a2 RA |
180 | }, |
181 | { | |
182 | .cmd = TIPC_NL_LINK_SET, | |
5be9c086 | 183 | .doit = tipc_nl_node_set_link, |
f96ce7a2 | 184 | .policy = tipc_nl_policy, |
ae36342b RA |
185 | }, |
186 | { | |
187 | .cmd = TIPC_NL_LINK_RESET_STATS, | |
5be9c086 | 188 | .doit = tipc_nl_node_reset_link_stats, |
ae36342b | 189 | .policy = tipc_nl_policy, |
46f15c67 RA |
190 | }, |
191 | { | |
192 | .cmd = TIPC_NL_MEDIA_GET, | |
193 | .doit = tipc_nl_media_get, | |
194 | .dumpit = tipc_nl_media_dump, | |
195 | .policy = tipc_nl_policy, | |
1e55417d RA |
196 | }, |
197 | { | |
198 | .cmd = TIPC_NL_MEDIA_SET, | |
199 | .doit = tipc_nl_media_set, | |
200 | .policy = tipc_nl_policy, | |
3e4b6ab5 RA |
201 | }, |
202 | { | |
203 | .cmd = TIPC_NL_NODE_GET, | |
204 | .dumpit = tipc_nl_node_dump, | |
205 | .policy = tipc_nl_policy, | |
fd3cf2ad RA |
206 | }, |
207 | { | |
208 | .cmd = TIPC_NL_NET_GET, | |
209 | .dumpit = tipc_nl_net_dump, | |
210 | .policy = tipc_nl_policy, | |
27c21416 RA |
211 | }, |
212 | { | |
213 | .cmd = TIPC_NL_NET_SET, | |
214 | .doit = tipc_nl_net_set, | |
215 | .policy = tipc_nl_policy, | |
1593123a RA |
216 | }, |
217 | { | |
218 | .cmd = TIPC_NL_NAME_TABLE_GET, | |
219 | .dumpit = tipc_nl_name_table_dump, | |
220 | .policy = tipc_nl_policy, | |
7b3f5229 PB |
221 | }, |
222 | { | |
223 | .cmd = TIPC_NL_MON_SET, | |
224 | .doit = tipc_nl_node_set_monitor, | |
225 | .policy = tipc_nl_policy, | |
226 | }, | |
bf1035b2 PB |
227 | { |
228 | .cmd = TIPC_NL_MON_GET, | |
229 | .doit = tipc_nl_node_get_monitor, | |
cf6f7e1d PB |
230 | .dumpit = tipc_nl_node_dump_monitor, |
231 | .policy = tipc_nl_policy, | |
232 | }, | |
233 | { | |
234 | .cmd = TIPC_NL_MON_PEER_GET, | |
235 | .dumpit = tipc_nl_node_dump_monitor_peer, | |
bf1035b2 PB |
236 | .policy = tipc_nl_policy, |
237 | }, | |
b3404022 RA |
238 | { |
239 | .cmd = TIPC_NL_PEER_REMOVE, | |
240 | .doit = tipc_nl_peer_rm, | |
241 | .policy = tipc_nl_policy, | |
832629ca RA |
242 | }, |
243 | #ifdef CONFIG_TIPC_MEDIA_UDP | |
244 | { | |
245 | .cmd = TIPC_NL_UDP_GET_REMOTEIP, | |
246 | .dumpit = tipc_udp_nl_dump_remoteip, | |
247 | .policy = tipc_nl_policy, | |
248 | }, | |
249 | #endif | |
0655f6a8 RA |
250 | }; |
251 | ||
56989f6d | 252 | struct genl_family tipc_genl_family __ro_after_init = { |
489111e5 JB |
253 | .name = TIPC_GENL_V2_NAME, |
254 | .version = TIPC_GENL_V2_VERSION, | |
255 | .hdrsize = 0, | |
256 | .maxattr = TIPC_NLA_MAX, | |
257 | .netnsok = true, | |
258 | .module = THIS_MODULE, | |
259 | .ops = tipc_genl_v2_ops, | |
260 | .n_ops = ARRAY_SIZE(tipc_genl_v2_ops), | |
261 | }; | |
262 | ||
1a1a143d RA |
263 | int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr) |
264 | { | |
bfb3e5dd | 265 | u32 maxattr = tipc_genl_family.maxattr; |
1a1a143d | 266 | |
c90c39da | 267 | *attr = genl_family_attrbuf(&tipc_genl_family); |
1a1a143d RA |
268 | if (!*attr) |
269 | return -EOPNOTSUPP; | |
270 | ||
fceb6435 JB |
271 | return nlmsg_parse(nlh, GENL_HDRLEN, *attr, maxattr, tipc_nl_policy, |
272 | NULL); | |
1a1a143d RA |
273 | } |
274 | ||
56989f6d | 275 | int __init tipc_netlink_start(void) |
b97bf3fd | 276 | { |
acb0a200 | 277 | int res; |
b70e4f45 | 278 | |
489111e5 | 279 | res = genl_register_family(&tipc_genl_family); |
acb0a200 | 280 | if (res) { |
2cf8aa19 | 281 | pr_err("Failed to register netlink interface\n"); |
acb0a200 MM |
282 | return res; |
283 | } | |
c4307285 | 284 | return 0; |
b97bf3fd PL |
285 | } |
286 | ||
4323add6 | 287 | void tipc_netlink_stop(void) |
b97bf3fd | 288 | { |
acb0a200 | 289 | genl_unregister_family(&tipc_genl_family); |
b97bf3fd | 290 | } |