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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 | 54 | [TIPC_NLA_NET] = { .type = NLA_NESTED, }, |
7b3f5229 PB |
55 | [TIPC_NLA_NAME_TABLE] = { .type = NLA_NESTED, }, |
56 | [TIPC_NLA_MON] = { .type = NLA_NESTED, }, | |
0655f6a8 RA |
57 | }; |
58 | ||
49cc66ea RA |
59 | const struct nla_policy |
60 | tipc_nl_name_table_policy[TIPC_NLA_NAME_TABLE_MAX + 1] = { | |
61 | [TIPC_NLA_NAME_TABLE_UNSPEC] = { .type = NLA_UNSPEC }, | |
62 | [TIPC_NLA_NAME_TABLE_PUBL] = { .type = NLA_NESTED } | |
63 | }; | |
64 | ||
7b3f5229 PB |
65 | const struct nla_policy tipc_nl_monitor_policy[TIPC_NLA_MON_MAX + 1] = { |
66 | [TIPC_NLA_MON_UNSPEC] = { .type = NLA_UNSPEC }, | |
cf6f7e1d | 67 | [TIPC_NLA_MON_REF] = { .type = NLA_U32 }, |
7b3f5229 PB |
68 | [TIPC_NLA_MON_ACTIVATION_THRESHOLD] = { .type = NLA_U32 }, |
69 | }; | |
70 | ||
49cc66ea RA |
71 | const struct nla_policy tipc_nl_sock_policy[TIPC_NLA_SOCK_MAX + 1] = { |
72 | [TIPC_NLA_SOCK_UNSPEC] = { .type = NLA_UNSPEC }, | |
73 | [TIPC_NLA_SOCK_ADDR] = { .type = NLA_U32 }, | |
74 | [TIPC_NLA_SOCK_REF] = { .type = NLA_U32 }, | |
75 | [TIPC_NLA_SOCK_CON] = { .type = NLA_NESTED }, | |
76 | [TIPC_NLA_SOCK_HAS_PUBL] = { .type = NLA_FLAG } | |
77 | }; | |
78 | ||
79 | const struct nla_policy tipc_nl_net_policy[TIPC_NLA_NET_MAX + 1] = { | |
80 | [TIPC_NLA_NET_UNSPEC] = { .type = NLA_UNSPEC }, | |
81 | [TIPC_NLA_NET_ID] = { .type = NLA_U32 } | |
82 | }; | |
83 | ||
84 | const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = { | |
85 | [TIPC_NLA_LINK_UNSPEC] = { .type = NLA_UNSPEC }, | |
86 | [TIPC_NLA_LINK_NAME] = { .type = NLA_STRING, | |
87 | .len = TIPC_MAX_LINK_NAME }, | |
88 | [TIPC_NLA_LINK_MTU] = { .type = NLA_U32 }, | |
89 | [TIPC_NLA_LINK_BROADCAST] = { .type = NLA_FLAG }, | |
90 | [TIPC_NLA_LINK_UP] = { .type = NLA_FLAG }, | |
91 | [TIPC_NLA_LINK_ACTIVE] = { .type = NLA_FLAG }, | |
92 | [TIPC_NLA_LINK_PROP] = { .type = NLA_NESTED }, | |
93 | [TIPC_NLA_LINK_STATS] = { .type = NLA_NESTED }, | |
94 | [TIPC_NLA_LINK_RX] = { .type = NLA_U32 }, | |
95 | [TIPC_NLA_LINK_TX] = { .type = NLA_U32 } | |
96 | }; | |
97 | ||
98 | const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = { | |
99 | [TIPC_NLA_NODE_UNSPEC] = { .type = NLA_UNSPEC }, | |
100 | [TIPC_NLA_NODE_ADDR] = { .type = NLA_U32 }, | |
101 | [TIPC_NLA_NODE_UP] = { .type = NLA_FLAG } | |
102 | }; | |
103 | ||
104 | /* Properties valid for media, bearer and link */ | |
105 | const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = { | |
106 | [TIPC_NLA_PROP_UNSPEC] = { .type = NLA_UNSPEC }, | |
107 | [TIPC_NLA_PROP_PRIO] = { .type = NLA_U32 }, | |
108 | [TIPC_NLA_PROP_TOL] = { .type = NLA_U32 }, | |
109 | [TIPC_NLA_PROP_WIN] = { .type = NLA_U32 } | |
110 | }; | |
111 | ||
112 | const struct nla_policy tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1] = { | |
113 | [TIPC_NLA_BEARER_UNSPEC] = { .type = NLA_UNSPEC }, | |
114 | [TIPC_NLA_BEARER_NAME] = { .type = NLA_STRING, | |
115 | .len = TIPC_MAX_BEARER_NAME }, | |
116 | [TIPC_NLA_BEARER_PROP] = { .type = NLA_NESTED }, | |
117 | [TIPC_NLA_BEARER_DOMAIN] = { .type = NLA_U32 } | |
118 | }; | |
119 | ||
120 | const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = { | |
121 | [TIPC_NLA_MEDIA_UNSPEC] = { .type = NLA_UNSPEC }, | |
122 | [TIPC_NLA_MEDIA_NAME] = { .type = NLA_STRING }, | |
123 | [TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED } | |
124 | }; | |
125 | ||
126 | const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = { | |
127 | [TIPC_NLA_UDP_UNSPEC] = {.type = NLA_UNSPEC}, | |
128 | [TIPC_NLA_UDP_LOCAL] = {.type = NLA_BINARY, | |
129 | .len = sizeof(struct sockaddr_storage)}, | |
130 | [TIPC_NLA_UDP_REMOTE] = {.type = NLA_BINARY, | |
131 | .len = sizeof(struct sockaddr_storage)}, | |
132 | }; | |
133 | ||
0655f6a8 RA |
134 | /* Users of the legacy API (tipc-config) can't handle that we add operations, |
135 | * so we have a separate genl handling for the new API. | |
136 | */ | |
bfb3e5dd | 137 | struct genl_family tipc_genl_family = { |
0655f6a8 RA |
138 | .id = GENL_ID_GENERATE, |
139 | .name = TIPC_GENL_V2_NAME, | |
140 | .version = TIPC_GENL_V2_VERSION, | |
141 | .hdrsize = 0, | |
142 | .maxattr = TIPC_NLA_MAX, | |
d49e2041 | 143 | .netnsok = true, |
0655f6a8 RA |
144 | }; |
145 | ||
146 | static const struct genl_ops tipc_genl_v2_ops[] = { | |
147 | { | |
148 | .cmd = TIPC_NL_BEARER_DISABLE, | |
149 | .doit = tipc_nl_bearer_disable, | |
150 | .policy = tipc_nl_policy, | |
151 | }, | |
152 | { | |
153 | .cmd = TIPC_NL_BEARER_ENABLE, | |
154 | .doit = tipc_nl_bearer_enable, | |
155 | .policy = tipc_nl_policy, | |
35b9dd76 RA |
156 | }, |
157 | { | |
158 | .cmd = TIPC_NL_BEARER_GET, | |
159 | .doit = tipc_nl_bearer_get, | |
160 | .dumpit = tipc_nl_bearer_dump, | |
161 | .policy = tipc_nl_policy, | |
315c00bc RA |
162 | }, |
163 | { | |
164 | .cmd = TIPC_NL_BEARER_SET, | |
165 | .doit = tipc_nl_bearer_set, | |
166 | .policy = tipc_nl_policy, | |
34b78a12 RA |
167 | }, |
168 | { | |
169 | .cmd = TIPC_NL_SOCK_GET, | |
170 | .dumpit = tipc_nl_sk_dump, | |
171 | .policy = tipc_nl_policy, | |
1a1a143d RA |
172 | }, |
173 | { | |
174 | .cmd = TIPC_NL_PUBL_GET, | |
175 | .dumpit = tipc_nl_publ_dump, | |
176 | .policy = tipc_nl_policy, | |
7be57fc6 RA |
177 | }, |
178 | { | |
179 | .cmd = TIPC_NL_LINK_GET, | |
5be9c086 | 180 | .doit = tipc_nl_node_get_link, |
38206d59 | 181 | .dumpit = tipc_nl_node_dump_link, |
7be57fc6 | 182 | .policy = tipc_nl_policy, |
f96ce7a2 RA |
183 | }, |
184 | { | |
185 | .cmd = TIPC_NL_LINK_SET, | |
5be9c086 | 186 | .doit = tipc_nl_node_set_link, |
f96ce7a2 | 187 | .policy = tipc_nl_policy, |
ae36342b RA |
188 | }, |
189 | { | |
190 | .cmd = TIPC_NL_LINK_RESET_STATS, | |
5be9c086 | 191 | .doit = tipc_nl_node_reset_link_stats, |
ae36342b | 192 | .policy = tipc_nl_policy, |
46f15c67 RA |
193 | }, |
194 | { | |
195 | .cmd = TIPC_NL_MEDIA_GET, | |
196 | .doit = tipc_nl_media_get, | |
197 | .dumpit = tipc_nl_media_dump, | |
198 | .policy = tipc_nl_policy, | |
1e55417d RA |
199 | }, |
200 | { | |
201 | .cmd = TIPC_NL_MEDIA_SET, | |
202 | .doit = tipc_nl_media_set, | |
203 | .policy = tipc_nl_policy, | |
3e4b6ab5 RA |
204 | }, |
205 | { | |
206 | .cmd = TIPC_NL_NODE_GET, | |
207 | .dumpit = tipc_nl_node_dump, | |
208 | .policy = tipc_nl_policy, | |
fd3cf2ad RA |
209 | }, |
210 | { | |
211 | .cmd = TIPC_NL_NET_GET, | |
212 | .dumpit = tipc_nl_net_dump, | |
213 | .policy = tipc_nl_policy, | |
27c21416 RA |
214 | }, |
215 | { | |
216 | .cmd = TIPC_NL_NET_SET, | |
217 | .doit = tipc_nl_net_set, | |
218 | .policy = tipc_nl_policy, | |
1593123a RA |
219 | }, |
220 | { | |
221 | .cmd = TIPC_NL_NAME_TABLE_GET, | |
222 | .dumpit = tipc_nl_name_table_dump, | |
223 | .policy = tipc_nl_policy, | |
7b3f5229 PB |
224 | }, |
225 | { | |
226 | .cmd = TIPC_NL_MON_SET, | |
227 | .doit = tipc_nl_node_set_monitor, | |
228 | .policy = tipc_nl_policy, | |
229 | }, | |
bf1035b2 PB |
230 | { |
231 | .cmd = TIPC_NL_MON_GET, | |
232 | .doit = tipc_nl_node_get_monitor, | |
cf6f7e1d PB |
233 | .dumpit = tipc_nl_node_dump_monitor, |
234 | .policy = tipc_nl_policy, | |
235 | }, | |
236 | { | |
237 | .cmd = TIPC_NL_MON_PEER_GET, | |
238 | .dumpit = tipc_nl_node_dump_monitor_peer, | |
bf1035b2 PB |
239 | .policy = tipc_nl_policy, |
240 | }, | |
0655f6a8 RA |
241 | }; |
242 | ||
1a1a143d RA |
243 | int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr) |
244 | { | |
bfb3e5dd | 245 | u32 maxattr = tipc_genl_family.maxattr; |
1a1a143d | 246 | |
bfb3e5dd | 247 | *attr = tipc_genl_family.attrbuf; |
1a1a143d RA |
248 | if (!*attr) |
249 | return -EOPNOTSUPP; | |
250 | ||
251 | return nlmsg_parse(nlh, GENL_HDRLEN, *attr, maxattr, tipc_nl_policy); | |
252 | } | |
253 | ||
4323add6 | 254 | int tipc_netlink_start(void) |
b97bf3fd | 255 | { |
acb0a200 | 256 | int res; |
b70e4f45 | 257 | |
bfb3e5dd | 258 | res = genl_register_family_with_ops(&tipc_genl_family, |
0655f6a8 | 259 | tipc_genl_v2_ops); |
acb0a200 | 260 | if (res) { |
2cf8aa19 | 261 | pr_err("Failed to register netlink interface\n"); |
acb0a200 MM |
262 | return res; |
263 | } | |
c4307285 | 264 | return 0; |
b97bf3fd PL |
265 | } |
266 | ||
4323add6 | 267 | void tipc_netlink_stop(void) |
b97bf3fd | 268 | { |
acb0a200 | 269 | genl_unregister_family(&tipc_genl_family); |
b97bf3fd | 270 | } |