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.sysctl.anycast_src_echo_reply,
30 .maxlen = sizeof(int),
32 .proc_handler = proc_dointvec
35 .procname = "flowlabel_consistency",
36 .data = &init_net.ipv6.sysctl.flowlabel_consistency,
37 .maxlen = sizeof(int),
39 .proc_handler = proc_dointvec
42 .procname = "auto_flowlabels",
43 .data = &init_net.ipv6.sysctl.auto_flowlabels,
44 .maxlen = sizeof(int),
46 .proc_handler = proc_dointvec
49 .procname = "fwmark_reflect",
50 .data = &init_net.ipv6.sysctl.fwmark_reflect,
51 .maxlen = sizeof(int),
53 .proc_handler = proc_dointvec
58 static struct ctl_table ipv6_rotable[] = {
60 .procname = "mld_max_msf",
61 .data = &sysctl_mld_max_msf,
62 .maxlen = sizeof(int),
64 .proc_handler = proc_dointvec
69 static int __net_init ipv6_sysctl_net_init(struct net *net)
71 struct ctl_table *ipv6_table;
72 struct ctl_table *ipv6_route_table;
73 struct ctl_table *ipv6_icmp_table;
77 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
81 ipv6_table[0].data = &net->ipv6.sysctl.bindv6only;
82 ipv6_table[1].data = &net->ipv6.sysctl.anycast_src_echo_reply;
83 ipv6_table[2].data = &net->ipv6.sysctl.flowlabel_consistency;
84 ipv6_table[3].data = &net->ipv6.sysctl.auto_flowlabels;
85 ipv6_table[4].data = &net->ipv6.sysctl.fwmark_reflect;
87 ipv6_route_table = ipv6_route_sysctl_init(net);
88 if (!ipv6_route_table)
91 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
93 goto out_ipv6_route_table;
95 net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
96 if (!net->ipv6.sysctl.hdr)
97 goto out_ipv6_icmp_table;
99 net->ipv6.sysctl.route_hdr =
100 register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
101 if (!net->ipv6.sysctl.route_hdr)
102 goto out_unregister_ipv6_table;
104 net->ipv6.sysctl.icmp_hdr =
105 register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
106 if (!net->ipv6.sysctl.icmp_hdr)
107 goto out_unregister_route_table;
112 out_unregister_route_table:
113 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
114 out_unregister_ipv6_table:
115 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
117 kfree(ipv6_icmp_table);
118 out_ipv6_route_table:
119 kfree(ipv6_route_table);
125 static void __net_exit ipv6_sysctl_net_exit(struct net *net)
127 struct ctl_table *ipv6_table;
128 struct ctl_table *ipv6_route_table;
129 struct ctl_table *ipv6_icmp_table;
131 ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
132 ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
133 ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;
135 unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
136 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
137 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
140 kfree(ipv6_route_table);
141 kfree(ipv6_icmp_table);
144 static struct pernet_operations ipv6_sysctl_net_ops = {
145 .init = ipv6_sysctl_net_init,
146 .exit = ipv6_sysctl_net_exit,
149 static struct ctl_table_header *ip6_header;
151 int ipv6_sysctl_register(void)
155 ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
156 if (ip6_header == NULL)
159 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
166 unregister_net_sysctl_table(ip6_header);
170 void ipv6_sysctl_unregister(void)
172 unregister_net_sysctl_table(ip6_header);
173 unregister_pernet_subsys(&ipv6_sysctl_net_ops);