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
28 .procname = "fwmark_reflect",
29 .data = &init_net.ipv6.sysctl.fwmark_reflect,
30 .maxlen = sizeof(int),
32 .proc_handler = proc_dointvec
37 static 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;
62 ipv6_route_table = ipv6_route_sysctl_init(net);
63 if (!ipv6_route_table)
66 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
68 goto out_ipv6_route_table;
70 net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
71 if (!net->ipv6.sysctl.hdr)
72 goto out_ipv6_icmp_table;
74 net->ipv6.sysctl.route_hdr =
75 register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
76 if (!net->ipv6.sysctl.route_hdr)
77 goto out_unregister_ipv6_table;
79 net->ipv6.sysctl.icmp_hdr =
80 register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
81 if (!net->ipv6.sysctl.icmp_hdr)
82 goto out_unregister_route_table;
87 out_unregister_route_table:
88 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
89 out_unregister_ipv6_table:
90 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
92 kfree(ipv6_icmp_table);
94 kfree(ipv6_route_table);
100 static void __net_exit ipv6_sysctl_net_exit(struct net *net)
102 struct ctl_table *ipv6_table;
103 struct ctl_table *ipv6_route_table;
104 struct ctl_table *ipv6_icmp_table;
106 ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
107 ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
108 ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;
110 unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
111 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
112 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
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(&init_net, "net/ipv6", 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);