2 * net/tipc/netlink.c: TIPC configuration handling
4 * Copyright (c) 2005-2006, 2014, Ericsson AB
5 * Copyright (c) 2005-2007, Wind River Systems
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
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.
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.
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
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34 * POSSIBILITY OF SUCH DAMAGE.
40 #include "name_table.h"
45 #include <net/genetlink.h>
47 static int handle_cmd(struct sk_buff
*skb
, struct genl_info
*info
)
49 struct sk_buff
*rep_buf
;
50 struct nlmsghdr
*rep_nlh
;
51 struct nlmsghdr
*req_nlh
= info
->nlhdr
;
52 struct tipc_genlmsghdr
*req_userhdr
= info
->userhdr
;
53 int hdr_space
= nlmsg_total_size(GENL_HDRLEN
+ TIPC_GENL_HDRLEN
);
56 if ((req_userhdr
->cmd
& 0xC000) && (!netlink_capable(skb
, CAP_NET_ADMIN
)))
57 cmd
= TIPC_CMD_NOT_NET_ADMIN
;
59 cmd
= req_userhdr
->cmd
;
61 rep_buf
= tipc_cfg_do_cmd(req_userhdr
->dest
, cmd
,
62 nlmsg_data(req_nlh
) + GENL_HDRLEN
+ TIPC_GENL_HDRLEN
,
63 nlmsg_attrlen(req_nlh
, GENL_HDRLEN
+ TIPC_GENL_HDRLEN
),
67 skb_push(rep_buf
, hdr_space
);
68 rep_nlh
= nlmsg_hdr(rep_buf
);
69 memcpy(rep_nlh
, req_nlh
, hdr_space
);
70 rep_nlh
->nlmsg_len
= rep_buf
->len
;
71 genlmsg_unicast(&init_net
, rep_buf
, NETLINK_CB(skb
).portid
);
77 static const struct nla_policy tipc_nl_policy
[TIPC_NLA_MAX
+ 1] = {
78 [TIPC_NLA_UNSPEC
] = { .type
= NLA_UNSPEC
, },
79 [TIPC_NLA_BEARER
] = { .type
= NLA_NESTED
, },
80 [TIPC_NLA_SOCK
] = { .type
= NLA_NESTED
, },
81 [TIPC_NLA_PUBL
] = { .type
= NLA_NESTED
, },
82 [TIPC_NLA_LINK
] = { .type
= NLA_NESTED
, },
83 [TIPC_NLA_MEDIA
] = { .type
= NLA_NESTED
, },
84 [TIPC_NLA_NODE
] = { .type
= NLA_NESTED
, },
85 [TIPC_NLA_NET
] = { .type
= NLA_NESTED
, },
86 [TIPC_NLA_NAME_TABLE
] = { .type
= NLA_NESTED
, }
89 /* Legacy ASCII API */
90 static struct genl_family tipc_genl_family
= {
91 .id
= GENL_ID_GENERATE
,
92 .name
= TIPC_GENL_NAME
,
93 .version
= TIPC_GENL_VERSION
,
94 .hdrsize
= TIPC_GENL_HDRLEN
,
98 /* Legacy ASCII API */
99 static struct genl_ops tipc_genl_ops
[] = {
101 .cmd
= TIPC_GENL_CMD
,
106 /* Users of the legacy API (tipc-config) can't handle that we add operations,
107 * so we have a separate genl handling for the new API.
109 struct genl_family tipc_genl_v2_family
= {
110 .id
= GENL_ID_GENERATE
,
111 .name
= TIPC_GENL_V2_NAME
,
112 .version
= TIPC_GENL_V2_VERSION
,
114 .maxattr
= TIPC_NLA_MAX
,
117 static const struct genl_ops tipc_genl_v2_ops
[] = {
119 .cmd
= TIPC_NL_BEARER_DISABLE
,
120 .doit
= tipc_nl_bearer_disable
,
121 .policy
= tipc_nl_policy
,
124 .cmd
= TIPC_NL_BEARER_ENABLE
,
125 .doit
= tipc_nl_bearer_enable
,
126 .policy
= tipc_nl_policy
,
129 .cmd
= TIPC_NL_BEARER_GET
,
130 .doit
= tipc_nl_bearer_get
,
131 .dumpit
= tipc_nl_bearer_dump
,
132 .policy
= tipc_nl_policy
,
135 .cmd
= TIPC_NL_BEARER_SET
,
136 .doit
= tipc_nl_bearer_set
,
137 .policy
= tipc_nl_policy
,
140 .cmd
= TIPC_NL_SOCK_GET
,
141 .dumpit
= tipc_nl_sk_dump
,
142 .policy
= tipc_nl_policy
,
145 .cmd
= TIPC_NL_PUBL_GET
,
146 .dumpit
= tipc_nl_publ_dump
,
147 .policy
= tipc_nl_policy
,
150 .cmd
= TIPC_NL_LINK_GET
,
151 .doit
= tipc_nl_link_get
,
152 .dumpit
= tipc_nl_link_dump
,
153 .policy
= tipc_nl_policy
,
156 .cmd
= TIPC_NL_LINK_SET
,
157 .doit
= tipc_nl_link_set
,
158 .policy
= tipc_nl_policy
,
161 .cmd
= TIPC_NL_LINK_RESET_STATS
,
162 .doit
= tipc_nl_link_reset_stats
,
163 .policy
= tipc_nl_policy
,
166 .cmd
= TIPC_NL_MEDIA_GET
,
167 .doit
= tipc_nl_media_get
,
168 .dumpit
= tipc_nl_media_dump
,
169 .policy
= tipc_nl_policy
,
172 .cmd
= TIPC_NL_MEDIA_SET
,
173 .doit
= tipc_nl_media_set
,
174 .policy
= tipc_nl_policy
,
177 .cmd
= TIPC_NL_NODE_GET
,
178 .dumpit
= tipc_nl_node_dump
,
179 .policy
= tipc_nl_policy
,
182 .cmd
= TIPC_NL_NET_GET
,
183 .dumpit
= tipc_nl_net_dump
,
184 .policy
= tipc_nl_policy
,
187 .cmd
= TIPC_NL_NET_SET
,
188 .doit
= tipc_nl_net_set
,
189 .policy
= tipc_nl_policy
,
192 .cmd
= TIPC_NL_NAME_TABLE_GET
,
193 .dumpit
= tipc_nl_name_table_dump
,
194 .policy
= tipc_nl_policy
,
198 int tipc_nlmsg_parse(const struct nlmsghdr
*nlh
, struct nlattr
***attr
)
200 u32 maxattr
= tipc_genl_v2_family
.maxattr
;
202 *attr
= tipc_genl_v2_family
.attrbuf
;
206 return nlmsg_parse(nlh
, GENL_HDRLEN
, *attr
, maxattr
, tipc_nl_policy
);
209 int tipc_netlink_start(void)
213 res
= genl_register_family_with_ops(&tipc_genl_family
, tipc_genl_ops
);
215 pr_err("Failed to register legacy interface\n");
219 res
= genl_register_family_with_ops(&tipc_genl_v2_family
,
222 pr_err("Failed to register netlink interface\n");
228 void tipc_netlink_stop(void)
230 genl_unregister_family(&tipc_genl_family
);
231 genl_unregister_family(&tipc_genl_v2_family
);