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8#include <linux/mm.h>
9#include <linux/sysctl.h>
10#include <linux/in6.h>
11#include <linux/ipv6.h>
12#include <linux/slab.h>
13#include <linux/export.h>
14#include <net/ndisc.h>
15#include <net/ipv6.h>
16#include <net/addrconf.h>
17#include <net/inet_frag.h>
18
19static struct ctl_table empty[1];
20
21static ctl_table ipv6_static_skeleton[] = {
22 {
23 .procname = "neigh",
24 .maxlen = 0,
25 .mode = 0555,
26 .child = empty,
27 },
28 { }
29};
30
31static ctl_table ipv6_table_template[] = {
32 {
33 .procname = "route",
34 .maxlen = 0,
35 .mode = 0555,
36 .child = ipv6_route_table_template
37 },
38 {
39 .procname = "icmp",
40 .maxlen = 0,
41 .mode = 0555,
42 .child = ipv6_icmp_table_template
43 },
44 {
45 .procname = "bindv6only",
46 .data = &init_net.ipv6.sysctl.bindv6only,
47 .maxlen = sizeof(int),
48 .mode = 0644,
49 .proc_handler = proc_dointvec
50 },
51 { }
52};
53
54static ctl_table ipv6_rotable[] = {
55 {
56 .procname = "mld_max_msf",
57 .data = &sysctl_mld_max_msf,
58 .maxlen = sizeof(int),
59 .mode = 0644,
60 .proc_handler = proc_dointvec
61 },
62 { }
63};
64
65struct ctl_path net_ipv6_ctl_path[] = {
66 { .procname = "net", },
67 { .procname = "ipv6", },
68 { },
69};
70EXPORT_SYMBOL_GPL(net_ipv6_ctl_path);
71
72static int __net_init ipv6_sysctl_net_init(struct net *net)
73{
74 struct ctl_table *ipv6_table;
75 struct ctl_table *ipv6_route_table;
76 struct ctl_table *ipv6_icmp_table;
77 int err;
78
79 err = -ENOMEM;
80 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
81 GFP_KERNEL);
82 if (!ipv6_table)
83 goto out;
84
85 ipv6_route_table = ipv6_route_sysctl_init(net);
86 if (!ipv6_route_table)
87 goto out_ipv6_table;
88 ipv6_table[0].child = ipv6_route_table;
89
90 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
91 if (!ipv6_icmp_table)
92 goto out_ipv6_route_table;
93 ipv6_table[1].child = ipv6_icmp_table;
94
95 ipv6_table[2].data = &net->ipv6.sysctl.bindv6only;
96
97 net->ipv6.sysctl.table = register_net_sysctl_table(net, net_ipv6_ctl_path,
98 ipv6_table);
99 if (!net->ipv6.sysctl.table)
100 goto out_ipv6_icmp_table;
101
102 err = 0;
103out:
104 return err;
105
106out_ipv6_icmp_table:
107 kfree(ipv6_icmp_table);
108out_ipv6_route_table:
109 kfree(ipv6_route_table);
110out_ipv6_table:
111 kfree(ipv6_table);
112 goto out;
113}
114
115static void __net_exit ipv6_sysctl_net_exit(struct net *net)
116{
117 struct ctl_table *ipv6_table;
118 struct ctl_table *ipv6_route_table;
119 struct ctl_table *ipv6_icmp_table;
120
121 ipv6_table = net->ipv6.sysctl.table->ctl_table_arg;
122 ipv6_route_table = ipv6_table[0].child;
123 ipv6_icmp_table = ipv6_table[1].child;
124
125 unregister_net_sysctl_table(net->ipv6.sysctl.table);
126
127 kfree(ipv6_table);
128 kfree(ipv6_route_table);
129 kfree(ipv6_icmp_table);
130}
131
132static struct pernet_operations ipv6_sysctl_net_ops = {
133 .init = ipv6_sysctl_net_init,
134 .exit = ipv6_sysctl_net_exit,
135};
136
137static struct ctl_table_header *ip6_header;
138
139int ipv6_sysctl_register(void)
140{
141 int err = -ENOMEM;
142
143 ip6_header = register_net_sysctl_rotable(net_ipv6_ctl_path, ipv6_rotable);
144 if (ip6_header == NULL)
145 goto out;
146
147 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
148 if (err)
149 goto err_pernet;
150out:
151 return err;
152
153err_pernet:
154 unregister_net_sysctl_table(ip6_header);
155 goto out;
156}
157
158void ipv6_sysctl_unregister(void)
159{
160 unregister_net_sysctl_table(ip6_header);
161 unregister_pernet_subsys(&ipv6_sysctl_net_ops);
162}
163
164static struct ctl_table_header *ip6_base;
165
166int ipv6_static_sysctl_register(void)
167{
168 ip6_base = register_sysctl_paths(net_ipv6_ctl_path, ipv6_static_skeleton);
169 if (ip6_base == NULL)
170 return -ENOMEM;
171 return 0;
172}
173
174void ipv6_static_sysctl_unregister(void)
175{
176 unregister_net_sysctl_table(ip6_base);
177}
178
