Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * sysctl_net_ipv6.c: sysctl interface to net IPV6 subsystem. | |
3 | * | |
4 | * Changes: | |
5 | * YOSHIFUJI Hideaki @USAGI: added icmp sysctl table. | |
6 | */ | |
7 | ||
8 | #include <linux/mm.h> | |
9 | #include <linux/sysctl.h> | |
1da177e4 LT |
10 | #include <linux/in6.h> |
11 | #include <linux/ipv6.h> | |
5a0e3ad6 | 12 | #include <linux/slab.h> |
1da177e4 LT |
13 | #include <net/ndisc.h> |
14 | #include <net/ipv6.h> | |
15 | #include <net/addrconf.h> | |
04128f23 | 16 | #include <net/inet_frag.h> |
1da177e4 | 17 | |
bf36076a EB |
18 | static struct ctl_table empty[1]; |
19 | ||
9d2a8fa9 EB |
20 | static ctl_table ipv6_static_skeleton[] = { |
21 | { | |
22 | .procname = "neigh", | |
23 | .maxlen = 0, | |
24 | .mode = 0555, | |
25 | .child = empty, | |
26 | }, | |
27 | { } | |
28 | }; | |
29 | ||
760f2d01 | 30 | static ctl_table ipv6_table_template[] = { |
1da177e4 | 31 | { |
1da177e4 LT |
32 | .procname = "route", |
33 | .maxlen = 0, | |
34 | .mode = 0555, | |
760f2d01 | 35 | .child = ipv6_route_table_template |
1da177e4 LT |
36 | }, |
37 | { | |
1da177e4 LT |
38 | .procname = "icmp", |
39 | .maxlen = 0, | |
40 | .mode = 0555, | |
760f2d01 | 41 | .child = ipv6_icmp_table_template |
1da177e4 LT |
42 | }, |
43 | { | |
1da177e4 | 44 | .procname = "bindv6only", |
99bc9c4e | 45 | .data = &init_net.ipv6.sysctl.bindv6only, |
1da177e4 LT |
46 | .maxlen = sizeof(int), |
47 | .mode = 0644, | |
6d9f239a | 48 | .proc_handler = proc_dointvec |
1da177e4 | 49 | }, |
f8572d8f | 50 | { } |
34ac2573 PE |
51 | }; |
52 | ||
81e43213 | 53 | static ctl_table ipv6_rotable[] = { |
1da177e4 | 54 | { |
1da177e4 LT |
55 | .procname = "mld_max_msf", |
56 | .data = &sysctl_mld_max_msf, | |
57 | .maxlen = sizeof(int), | |
58 | .mode = 0644, | |
6d9f239a | 59 | .proc_handler = proc_dointvec |
1da177e4 | 60 | }, |
f8572d8f | 61 | { } |
1da177e4 LT |
62 | }; |
63 | ||
3d7cc2ba | 64 | struct ctl_path net_ipv6_ctl_path[] = { |
f8572d8f EB |
65 | { .procname = "net", }, |
66 | { .procname = "ipv6", }, | |
4d43b78a | 67 | { }, |
1da177e4 | 68 | }; |
3d7cc2ba | 69 | EXPORT_SYMBOL_GPL(net_ipv6_ctl_path); |
1da177e4 | 70 | |
2c8c1e72 | 71 | static int __net_init ipv6_sysctl_net_init(struct net *net) |
1da177e4 | 72 | { |
760f2d01 DL |
73 | struct ctl_table *ipv6_table; |
74 | struct ctl_table *ipv6_route_table; | |
75 | struct ctl_table *ipv6_icmp_table; | |
76 | int err; | |
77 | ||
78 | err = -ENOMEM; | |
79 | ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template), | |
80 | GFP_KERNEL); | |
81 | if (!ipv6_table) | |
82 | goto out; | |
83 | ||
84 | ipv6_route_table = ipv6_route_sysctl_init(net); | |
85 | if (!ipv6_route_table) | |
86 | goto out_ipv6_table; | |
5ee09105 | 87 | ipv6_table[0].child = ipv6_route_table; |
760f2d01 DL |
88 | |
89 | ipv6_icmp_table = ipv6_icmp_sysctl_init(net); | |
90 | if (!ipv6_icmp_table) | |
91 | goto out_ipv6_route_table; | |
760f2d01 DL |
92 | ipv6_table[1].child = ipv6_icmp_table; |
93 | ||
99bc9c4e DL |
94 | ipv6_table[2].data = &net->ipv6.sysctl.bindv6only; |
95 | ||
760f2d01 DL |
96 | net->ipv6.sysctl.table = register_net_sysctl_table(net, net_ipv6_ctl_path, |
97 | ipv6_table); | |
760f2d01 DL |
98 | if (!net->ipv6.sysctl.table) |
99 | goto out_ipv6_icmp_table; | |
100 | ||
101 | err = 0; | |
102 | out: | |
103 | return err; | |
291480c0 | 104 | |
760f2d01 DL |
105 | out_ipv6_icmp_table: |
106 | kfree(ipv6_icmp_table); | |
107 | out_ipv6_route_table: | |
108 | kfree(ipv6_route_table); | |
109 | out_ipv6_table: | |
110 | kfree(ipv6_table); | |
111 | goto out; | |
1da177e4 LT |
112 | } |
113 | ||
2c8c1e72 | 114 | static void __net_exit ipv6_sysctl_net_exit(struct net *net) |
89918fc2 | 115 | { |
760f2d01 DL |
116 | struct ctl_table *ipv6_table; |
117 | struct ctl_table *ipv6_route_table; | |
118 | struct ctl_table *ipv6_icmp_table; | |
119 | ||
120 | ipv6_table = net->ipv6.sysctl.table->ctl_table_arg; | |
121 | ipv6_route_table = ipv6_table[0].child; | |
122 | ipv6_icmp_table = ipv6_table[1].child; | |
123 | ||
124 | unregister_net_sysctl_table(net->ipv6.sysctl.table); | |
125 | ||
126 | kfree(ipv6_table); | |
127 | kfree(ipv6_route_table); | |
128 | kfree(ipv6_icmp_table); | |
89918fc2 DL |
129 | } |
130 | ||
131 | static struct pernet_operations ipv6_sysctl_net_ops = { | |
132 | .init = ipv6_sysctl_net_init, | |
133 | .exit = ipv6_sysctl_net_exit, | |
134 | }; | |
135 | ||
34ac2573 PE |
136 | static struct ctl_table_header *ip6_header; |
137 | ||
89918fc2 DL |
138 | int ipv6_sysctl_register(void) |
139 | { | |
c19a28e1 | 140 | int err = -ENOMEM; |
34ac2573 | 141 | |
81e43213 | 142 | ip6_header = register_net_sysctl_rotable(net_ipv6_ctl_path, ipv6_rotable); |
34ac2573 PE |
143 | if (ip6_header == NULL) |
144 | goto out; | |
145 | ||
146 | err = register_pernet_subsys(&ipv6_sysctl_net_ops); | |
147 | if (err) | |
148 | goto err_pernet; | |
149 | out: | |
150 | return err; | |
151 | ||
152 | err_pernet: | |
153 | unregister_net_sysctl_table(ip6_header); | |
154 | goto out; | |
89918fc2 DL |
155 | } |
156 | ||
1da177e4 LT |
157 | void ipv6_sysctl_unregister(void) |
158 | { | |
34ac2573 | 159 | unregister_net_sysctl_table(ip6_header); |
89918fc2 | 160 | unregister_pernet_subsys(&ipv6_sysctl_net_ops); |
1da177e4 | 161 | } |
eeb61f71 AV |
162 | |
163 | static struct ctl_table_header *ip6_base; | |
164 | ||
165 | int ipv6_static_sysctl_register(void) | |
166 | { | |
9d2a8fa9 | 167 | ip6_base = register_sysctl_paths(net_ipv6_ctl_path, ipv6_static_skeleton); |
eeb61f71 AV |
168 | if (ip6_base == NULL) |
169 | return -ENOMEM; | |
170 | return 0; | |
171 | } | |
172 | ||
173 | void ipv6_static_sysctl_unregister(void) | |
174 | { | |
175 | unregister_net_sysctl_table(ip6_base); | |
176 | } |