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 ctl_table ipv6_table_template[] = {
23 .child = ipv6_route_table_template
29 .child = ipv6_icmp_table_template
32 .procname = "bindv6only",
33 .data = &init_net.ipv6.sysctl.bindv6only,
34 .maxlen = sizeof(int),
36 .proc_handler = proc_dointvec
41 static ctl_table ipv6_rotable[] = {
43 .procname = "mld_max_msf",
44 .data = &sysctl_mld_max_msf,
45 .maxlen = sizeof(int),
47 .proc_handler = proc_dointvec
52 struct ctl_path net_ipv6_ctl_path[] = {
53 { .procname = "net", },
54 { .procname = "ipv6", },
57 EXPORT_SYMBOL_GPL(net_ipv6_ctl_path);
59 static int __net_init ipv6_sysctl_net_init(struct net *net)
61 struct ctl_table *ipv6_table;
62 struct ctl_table *ipv6_route_table;
63 struct ctl_table *ipv6_icmp_table;
67 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
72 ipv6_route_table = ipv6_route_sysctl_init(net);
73 if (!ipv6_route_table)
75 ipv6_table[0].child = ipv6_route_table;
77 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
79 goto out_ipv6_route_table;
80 ipv6_table[1].child = ipv6_icmp_table;
82 ipv6_table[2].data = &net->ipv6.sysctl.bindv6only;
84 net->ipv6.sysctl.table = register_net_sysctl_table(net, net_ipv6_ctl_path,
86 if (!net->ipv6.sysctl.table)
87 goto out_ipv6_icmp_table;
94 kfree(ipv6_icmp_table);
96 kfree(ipv6_route_table);
102 static void __net_exit ipv6_sysctl_net_exit(struct net *net)
104 struct ctl_table *ipv6_table;
105 struct ctl_table *ipv6_route_table;
106 struct ctl_table *ipv6_icmp_table;
108 ipv6_table = net->ipv6.sysctl.table->ctl_table_arg;
109 ipv6_route_table = ipv6_table[0].child;
110 ipv6_icmp_table = ipv6_table[1].child;
112 unregister_net_sysctl_table(net->ipv6.sysctl.table);
115 kfree(ipv6_route_table);
116 kfree(ipv6_icmp_table);
119 static struct pernet_operations ipv6_sysctl_net_ops = {
120 .init = ipv6_sysctl_net_init,
121 .exit = ipv6_sysctl_net_exit,
124 static struct ctl_table_header *ip6_header;
126 int ipv6_sysctl_register(void)
130 ip6_header = register_net_sysctl_rotable(net_ipv6_ctl_path, ipv6_rotable);
131 if (ip6_header == NULL)
134 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
141 unregister_net_sysctl_table(ip6_header);
145 void ipv6_sysctl_unregister(void)
147 unregister_net_sysctl_table(ip6_header);
148 unregister_pernet_subsys(&ipv6_sysctl_net_ops);
151 static struct ctl_table_header *ip6_base;
153 int ipv6_static_sysctl_register(void)
155 static struct ctl_table empty[1];
156 ip6_base = register_sysctl_paths(net_ipv6_ctl_path, empty);
157 if (ip6_base == NULL)
162 void ipv6_static_sysctl_unregister(void)
164 unregister_net_sysctl_table(ip6_base);