2 * sysctl_net_ipv6.c: sysctl interface to net IPV6 subsystem.
5 * YOSHIFUJI Hideaki @USAGI: added icmp sysctl table.
9 #include <linux/sysctl.h>
10 #include <linux/in6.h>
11 #include <linux/ipv6.h>
12 #include <linux/slab.h>
13 #include <net/ndisc.h>
15 #include <net/addrconf.h>
16 #include <net/inet_frag.h>
18 static struct ctl_table empty[1];
20 static ctl_table ipv6_static_skeleton[] = {
30 static ctl_table ipv6_table_template[] = {
35 .child = ipv6_route_table_template
41 .child = ipv6_icmp_table_template
44 .procname = "bindv6only",
45 .data = &init_net.ipv6.sysctl.bindv6only,
46 .maxlen = sizeof(int),
48 .proc_handler = proc_dointvec
53 static ctl_table ipv6_rotable[] = {
55 .procname = "mld_max_msf",
56 .data = &sysctl_mld_max_msf,
57 .maxlen = sizeof(int),
59 .proc_handler = proc_dointvec
64 struct ctl_path net_ipv6_ctl_path[] = {
65 { .procname = "net", },
66 { .procname = "ipv6", },
69 EXPORT_SYMBOL_GPL(net_ipv6_ctl_path);
71 static int __net_init ipv6_sysctl_net_init(struct net *net)
73 struct ctl_table *ipv6_table;
74 struct ctl_table *ipv6_route_table;
75 struct ctl_table *ipv6_icmp_table;
79 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
84 ipv6_route_table = ipv6_route_sysctl_init(net);
85 if (!ipv6_route_table)
87 ipv6_table[0].child = ipv6_route_table;
89 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
91 goto out_ipv6_route_table;
92 ipv6_table[1].child = ipv6_icmp_table;
94 ipv6_table[2].data = &net->ipv6.sysctl.bindv6only;
96 net->ipv6.sysctl.table = register_net_sysctl_table(net, net_ipv6_ctl_path,
98 if (!net->ipv6.sysctl.table)
99 goto out_ipv6_icmp_table;
106 kfree(ipv6_icmp_table);
107 out_ipv6_route_table:
108 kfree(ipv6_route_table);
114 static void __net_exit ipv6_sysctl_net_exit(struct net *net)
116 struct ctl_table *ipv6_table;
117 struct ctl_table *ipv6_route_table;
118 struct ctl_table *ipv6_icmp_table;
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;
124 unregister_net_sysctl_table(net->ipv6.sysctl.table);
127 kfree(ipv6_route_table);
128 kfree(ipv6_icmp_table);
131 static struct pernet_operations ipv6_sysctl_net_ops = {
132 .init = ipv6_sysctl_net_init,
133 .exit = ipv6_sysctl_net_exit,
136 static struct ctl_table_header *ip6_header;
138 int ipv6_sysctl_register(void)
142 ip6_header = register_net_sysctl_rotable(net_ipv6_ctl_path, ipv6_rotable);
143 if (ip6_header == NULL)
146 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
153 unregister_net_sysctl_table(ip6_header);
157 void ipv6_sysctl_unregister(void)
159 unregister_net_sysctl_table(ip6_header);
160 unregister_pernet_subsys(&ipv6_sysctl_net_ops);
163 static struct ctl_table_header *ip6_base;
165 int ipv6_static_sysctl_register(void)
167 ip6_base = register_sysctl_paths(net_ipv6_ctl_path, ipv6_static_skeleton);
168 if (ip6_base == NULL)
173 void ipv6_static_sysctl_unregister(void)
175 unregister_net_sysctl_table(ip6_base);