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Commit | Line | Data |
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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> |
bc3b2d7f | 13 | #include <linux/export.h> |
1da177e4 LT |
14 | #include <net/ndisc.h> |
15 | #include <net/ipv6.h> | |
16 | #include <net/addrconf.h> | |
04128f23 | 17 | #include <net/inet_frag.h> |
1da177e4 | 18 | |
760f2d01 | 19 | static ctl_table ipv6_table_template[] = { |
1da177e4 | 20 | { |
1da177e4 LT |
21 | .procname = "route", |
22 | .maxlen = 0, | |
23 | .mode = 0555, | |
760f2d01 | 24 | .child = ipv6_route_table_template |
1da177e4 LT |
25 | }, |
26 | { | |
1da177e4 LT |
27 | .procname = "icmp", |
28 | .maxlen = 0, | |
29 | .mode = 0555, | |
760f2d01 | 30 | .child = ipv6_icmp_table_template |
1da177e4 LT |
31 | }, |
32 | { | |
1da177e4 | 33 | .procname = "bindv6only", |
99bc9c4e | 34 | .data = &init_net.ipv6.sysctl.bindv6only, |
1da177e4 LT |
35 | .maxlen = sizeof(int), |
36 | .mode = 0644, | |
6d9f239a | 37 | .proc_handler = proc_dointvec |
1da177e4 | 38 | }, |
f8572d8f | 39 | { } |
34ac2573 PE |
40 | }; |
41 | ||
81e43213 | 42 | static ctl_table ipv6_rotable[] = { |
1da177e4 | 43 | { |
1da177e4 LT |
44 | .procname = "mld_max_msf", |
45 | .data = &sysctl_mld_max_msf, | |
46 | .maxlen = sizeof(int), | |
47 | .mode = 0644, | |
6d9f239a | 48 | .proc_handler = proc_dointvec |
1da177e4 | 49 | }, |
f8572d8f | 50 | { } |
1da177e4 LT |
51 | }; |
52 | ||
3d7cc2ba | 53 | struct ctl_path net_ipv6_ctl_path[] = { |
f8572d8f EB |
54 | { .procname = "net", }, |
55 | { .procname = "ipv6", }, | |
4d43b78a | 56 | { }, |
1da177e4 | 57 | }; |
3d7cc2ba | 58 | EXPORT_SYMBOL_GPL(net_ipv6_ctl_path); |
1da177e4 | 59 | |
2c8c1e72 | 60 | static int __net_init ipv6_sysctl_net_init(struct net *net) |
1da177e4 | 61 | { |
760f2d01 DL |
62 | struct ctl_table *ipv6_table; |
63 | struct ctl_table *ipv6_route_table; | |
64 | struct ctl_table *ipv6_icmp_table; | |
65 | int err; | |
66 | ||
67 | err = -ENOMEM; | |
68 | ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template), | |
69 | GFP_KERNEL); | |
70 | if (!ipv6_table) | |
71 | goto out; | |
72 | ||
73 | ipv6_route_table = ipv6_route_sysctl_init(net); | |
74 | if (!ipv6_route_table) | |
75 | goto out_ipv6_table; | |
5ee09105 | 76 | ipv6_table[0].child = ipv6_route_table; |
760f2d01 DL |
77 | |
78 | ipv6_icmp_table = ipv6_icmp_sysctl_init(net); | |
79 | if (!ipv6_icmp_table) | |
80 | goto out_ipv6_route_table; | |
760f2d01 DL |
81 | ipv6_table[1].child = ipv6_icmp_table; |
82 | ||
99bc9c4e DL |
83 | ipv6_table[2].data = &net->ipv6.sysctl.bindv6only; |
84 | ||
760f2d01 DL |
85 | net->ipv6.sysctl.table = register_net_sysctl_table(net, net_ipv6_ctl_path, |
86 | ipv6_table); | |
760f2d01 DL |
87 | if (!net->ipv6.sysctl.table) |
88 | goto out_ipv6_icmp_table; | |
89 | ||
90 | err = 0; | |
91 | out: | |
92 | return err; | |
291480c0 | 93 | |
760f2d01 DL |
94 | out_ipv6_icmp_table: |
95 | kfree(ipv6_icmp_table); | |
96 | out_ipv6_route_table: | |
97 | kfree(ipv6_route_table); | |
98 | out_ipv6_table: | |
99 | kfree(ipv6_table); | |
100 | goto out; | |
1da177e4 LT |
101 | } |
102 | ||
2c8c1e72 | 103 | static void __net_exit ipv6_sysctl_net_exit(struct net *net) |
89918fc2 | 104 | { |
760f2d01 DL |
105 | struct ctl_table *ipv6_table; |
106 | struct ctl_table *ipv6_route_table; | |
107 | struct ctl_table *ipv6_icmp_table; | |
108 | ||
109 | ipv6_table = net->ipv6.sysctl.table->ctl_table_arg; | |
110 | ipv6_route_table = ipv6_table[0].child; | |
111 | ipv6_icmp_table = ipv6_table[1].child; | |
112 | ||
113 | unregister_net_sysctl_table(net->ipv6.sysctl.table); | |
114 | ||
115 | kfree(ipv6_table); | |
116 | kfree(ipv6_route_table); | |
117 | kfree(ipv6_icmp_table); | |
89918fc2 DL |
118 | } |
119 | ||
120 | static struct pernet_operations ipv6_sysctl_net_ops = { | |
121 | .init = ipv6_sysctl_net_init, | |
122 | .exit = ipv6_sysctl_net_exit, | |
123 | }; | |
124 | ||
34ac2573 PE |
125 | static struct ctl_table_header *ip6_header; |
126 | ||
89918fc2 DL |
127 | int ipv6_sysctl_register(void) |
128 | { | |
c19a28e1 | 129 | int err = -ENOMEM; |
34ac2573 | 130 | |
43444757 | 131 | ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable); |
34ac2573 PE |
132 | if (ip6_header == NULL) |
133 | goto out; | |
134 | ||
135 | err = register_pernet_subsys(&ipv6_sysctl_net_ops); | |
136 | if (err) | |
137 | goto err_pernet; | |
138 | out: | |
139 | return err; | |
140 | ||
141 | err_pernet: | |
142 | unregister_net_sysctl_table(ip6_header); | |
143 | goto out; | |
89918fc2 DL |
144 | } |
145 | ||
1da177e4 LT |
146 | void ipv6_sysctl_unregister(void) |
147 | { | |
34ac2573 | 148 | unregister_net_sysctl_table(ip6_header); |
89918fc2 | 149 | unregister_pernet_subsys(&ipv6_sysctl_net_ops); |
1da177e4 | 150 | } |