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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 <net/ndisc.h>
13#include <net/ipv6.h>
14#include <net/addrconf.h>
15#include <net/inet_frag.h>
16
17static ctl_table ipv6_table_template[] = {
18 {
19 .ctl_name = NET_IPV6_ROUTE,
20 .procname = "route",
21 .maxlen = 0,
22 .mode = 0555,
23 .child = ipv6_route_table_template
24 },
25 {
26 .ctl_name = NET_IPV6_ICMP,
27 .procname = "icmp",
28 .maxlen = 0,
29 .mode = 0555,
30 .child = ipv6_icmp_table_template
31 },
32 {
33 .ctl_name = NET_IPV6_BINDV6ONLY,
34 .procname = "bindv6only",
35 .data = &init_net.ipv6.sysctl.bindv6only,
36 .maxlen = sizeof(int),
37 .mode = 0644,
38 .proc_handler = proc_dointvec
39 },
40 { .ctl_name = 0 }
41};
42
43static ctl_table ipv6_rotable[] = {
44 {
45 .ctl_name = NET_IPV6_MLD_MAX_MSF,
46 .procname = "mld_max_msf",
47 .data = &sysctl_mld_max_msf,
48 .maxlen = sizeof(int),
49 .mode = 0644,
50 .proc_handler = proc_dointvec
51 },
52 { .ctl_name = 0 }
53};
54
55struct ctl_path net_ipv6_ctl_path[] = {
56 { .procname = "net", .ctl_name = CTL_NET, },
57 { .procname = "ipv6", .ctl_name = NET_IPV6, },
58 { },
59};
60EXPORT_SYMBOL_GPL(net_ipv6_ctl_path);
61
62static int ipv6_sysctl_net_init(struct net *net)
63{
64 struct ctl_table *ipv6_table;
65 struct ctl_table *ipv6_route_table;
66 struct ctl_table *ipv6_icmp_table;
67 int err;
68
69 err = -ENOMEM;
70 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
71 GFP_KERNEL);
72 if (!ipv6_table)
73 goto out;
74
75 ipv6_route_table = ipv6_route_sysctl_init(net);
76 if (!ipv6_route_table)
77 goto out_ipv6_table;
78 ipv6_table[0].child = ipv6_route_table;
79
80 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
81 if (!ipv6_icmp_table)
82 goto out_ipv6_route_table;
83 ipv6_table[1].child = ipv6_icmp_table;
84
85 ipv6_table[2].data = &net->ipv6.sysctl.bindv6only;
86
87 net->ipv6.sysctl.table = register_net_sysctl_table(net, net_ipv6_ctl_path,
88 ipv6_table);
89 if (!net->ipv6.sysctl.table)
90 goto out_ipv6_icmp_table;
91
92 err = 0;
93out:
94 return err;
95
96out_ipv6_icmp_table:
97 kfree(ipv6_icmp_table);
98out_ipv6_route_table:
99 kfree(ipv6_route_table);
100out_ipv6_table:
101 kfree(ipv6_table);
102 goto out;
103}
104
105static void ipv6_sysctl_net_exit(struct net *net)
106{
107 struct ctl_table *ipv6_table;
108 struct ctl_table *ipv6_route_table;
109 struct ctl_table *ipv6_icmp_table;
110
111 ipv6_table = net->ipv6.sysctl.table->ctl_table_arg;
112 ipv6_route_table = ipv6_table[0].child;
113 ipv6_icmp_table = ipv6_table[1].child;
114
115 unregister_net_sysctl_table(net->ipv6.sysctl.table);
116
117 kfree(ipv6_table);
118 kfree(ipv6_route_table);
119 kfree(ipv6_icmp_table);
120}
121
122static struct pernet_operations ipv6_sysctl_net_ops = {
123 .init = ipv6_sysctl_net_init,
124 .exit = ipv6_sysctl_net_exit,
125};
126
127static struct ctl_table_header *ip6_header;
128
129int ipv6_sysctl_register(void)
130{
131 int err = -ENOMEM;
132
133 ip6_header = register_net_sysctl_rotable(net_ipv6_ctl_path, ipv6_rotable);
134 if (ip6_header == NULL)
135 goto out;
136
137 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
138 if (err)
139 goto err_pernet;
140out:
141 return err;
142
143err_pernet:
144 unregister_net_sysctl_table(ip6_header);
145 goto out;
146}
147
148void ipv6_sysctl_unregister(void)
149{
150 unregister_net_sysctl_table(ip6_header);
151 unregister_pernet_subsys(&ipv6_sysctl_net_ops);
152}
153
154static struct ctl_table_header *ip6_base;
155
156int ipv6_static_sysctl_register(void)
157{
158 static struct ctl_table empty[1];
159 ip6_base = register_sysctl_paths(net_ipv6_ctl_path, empty);
160 if (ip6_base == NULL)
161 return -ENOMEM;
162 return 0;
163}
164
165void ipv6_static_sysctl_unregister(void)
166{
167 unregister_net_sysctl_table(ip6_base);
168}
169
