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 <linux/export.h>
14 #include <net/ndisc.h>
16 #include <net/addrconf.h>
17 #include <net/inet_frag.h>
19 static ctl_table ipv6_table_template[] = {
21 .procname = "bindv6only",
22 .data = &init_net.ipv6.sysctl.bindv6only,
23 .maxlen = sizeof(int),
25 .proc_handler = proc_dointvec
30 static ctl_table ipv6_rotable[] = {
32 .procname = "mld_max_msf",
33 .data = &sysctl_mld_max_msf,
34 .maxlen = sizeof(int),
36 .proc_handler = proc_dointvec
41 static int __net_init ipv6_sysctl_net_init(struct net *net)
43 struct ctl_table *ipv6_table;
44 struct ctl_table *ipv6_route_table;
45 struct ctl_table *ipv6_icmp_table;
49 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
53 ipv6_table[0].data = &net->ipv6.sysctl.bindv6only;
55 ipv6_route_table = ipv6_route_sysctl_init(net);
56 if (!ipv6_route_table)
59 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
61 goto out_ipv6_route_table;
63 net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
64 if (!net->ipv6.sysctl.hdr)
65 goto out_ipv6_icmp_table;
67 net->ipv6.sysctl.route_hdr =
68 register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
69 if (!net->ipv6.sysctl.route_hdr)
70 goto out_unregister_ipv6_table;
72 net->ipv6.sysctl.icmp_hdr =
73 register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
74 if (!net->ipv6.sysctl.icmp_hdr)
75 goto out_unregister_route_table;
80 out_unregister_route_table:
81 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
82 out_unregister_ipv6_table:
83 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
85 kfree(ipv6_icmp_table);
87 kfree(ipv6_route_table);
93 static void __net_exit ipv6_sysctl_net_exit(struct net *net)
95 struct ctl_table *ipv6_table;
96 struct ctl_table *ipv6_route_table;
97 struct ctl_table *ipv6_icmp_table;
99 ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
100 ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
101 ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;
103 unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
104 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
105 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
108 kfree(ipv6_route_table);
109 kfree(ipv6_icmp_table);
112 static struct pernet_operations ipv6_sysctl_net_ops = {
113 .init = ipv6_sysctl_net_init,
114 .exit = ipv6_sysctl_net_exit,
117 static struct ctl_table_header *ip6_header;
119 int ipv6_sysctl_register(void)
123 ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
124 if (ip6_header == NULL)
127 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
134 unregister_net_sysctl_table(ip6_header);
138 void ipv6_sysctl_unregister(void)
140 unregister_net_sysctl_table(ip6_header);
141 unregister_pernet_subsys(&ipv6_sysctl_net_ops);