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 struct ctl_table ipv6_table_template[] = {
21 .procname = "bindv6only",
22 .data = &init_net.ipv6.sysctl.bindv6only,
23 .maxlen = sizeof(int),
25 .proc_handler = proc_dointvec
28 .procname = "anycast_src_echo_reply",
29 .data = &init_net.ipv6.anycast_src_echo_reply,
30 .maxlen = sizeof(int),
32 .proc_handler = proc_dointvec
37 static struct ctl_table ipv6_rotable[] = {
39 .procname = "mld_max_msf",
40 .data = &sysctl_mld_max_msf,
41 .maxlen = sizeof(int),
43 .proc_handler = proc_dointvec
48 static int __net_init ipv6_sysctl_net_init(struct net *net)
50 struct ctl_table *ipv6_table;
51 struct ctl_table *ipv6_route_table;
52 struct ctl_table *ipv6_icmp_table;
56 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
60 ipv6_table[0].data = &net->ipv6.sysctl.bindv6only;
61 ipv6_table[1].data = &net->ipv6.anycast_src_echo_reply;
63 ipv6_route_table = ipv6_route_sysctl_init(net);
64 if (!ipv6_route_table)
67 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
69 goto out_ipv6_route_table;
71 net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
72 if (!net->ipv6.sysctl.hdr)
73 goto out_ipv6_icmp_table;
75 net->ipv6.sysctl.route_hdr =
76 register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
77 if (!net->ipv6.sysctl.route_hdr)
78 goto out_unregister_ipv6_table;
80 net->ipv6.sysctl.icmp_hdr =
81 register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
82 if (!net->ipv6.sysctl.icmp_hdr)
83 goto out_unregister_route_table;
88 out_unregister_route_table:
89 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
90 out_unregister_ipv6_table:
91 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
93 kfree(ipv6_icmp_table);
95 kfree(ipv6_route_table);
101 static void __net_exit ipv6_sysctl_net_exit(struct net *net)
103 struct ctl_table *ipv6_table;
104 struct ctl_table *ipv6_route_table;
105 struct ctl_table *ipv6_icmp_table;
107 ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
108 ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
109 ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;
111 unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
112 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
113 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
116 kfree(ipv6_route_table);
117 kfree(ipv6_icmp_table);
120 static struct pernet_operations ipv6_sysctl_net_ops = {
121 .init = ipv6_sysctl_net_init,
122 .exit = ipv6_sysctl_net_exit,
125 static struct ctl_table_header *ip6_header;
127 int ipv6_sysctl_register(void)
131 ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
132 if (ip6_header == NULL)
135 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
142 unregister_net_sysctl_table(ip6_header);
146 void ipv6_sysctl_unregister(void)
148 unregister_net_sysctl_table(ip6_header);
149 unregister_pernet_subsys(&ipv6_sysctl_net_ops);