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 = "fwmark_reflect",
43 .data = &init_net.ipv6.sysctl.fwmark_reflect,
44 .maxlen = sizeof(int),
46 .proc_handler = proc_dointvec
51 static struct ctl_table ipv6_rotable[] = {
53 .procname = "mld_max_msf",
54 .data = &sysctl_mld_max_msf,
55 .maxlen = sizeof(int),
57 .proc_handler = proc_dointvec
62 static int __net_init ipv6_sysctl_net_init(struct net *net)
64 struct ctl_table *ipv6_table;
65 struct ctl_table *ipv6_route_table;
66 struct ctl_table *ipv6_icmp_table;
70 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
74 ipv6_table[0].data = &net->ipv6.sysctl.bindv6only;
75 ipv6_table[1].data = &net->ipv6.sysctl.anycast_src_echo_reply;
76 ipv6_table[2].data = &net->ipv6.sysctl.flowlabel_consistency;
78 ipv6_route_table = ipv6_route_sysctl_init(net);
79 if (!ipv6_route_table)
82 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
84 goto out_ipv6_route_table;
86 net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
87 if (!net->ipv6.sysctl.hdr)
88 goto out_ipv6_icmp_table;
90 net->ipv6.sysctl.route_hdr =
91 register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
92 if (!net->ipv6.sysctl.route_hdr)
93 goto out_unregister_ipv6_table;
95 net->ipv6.sysctl.icmp_hdr =
96 register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
97 if (!net->ipv6.sysctl.icmp_hdr)
98 goto out_unregister_route_table;
103 out_unregister_route_table:
104 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
105 out_unregister_ipv6_table:
106 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
108 kfree(ipv6_icmp_table);
109 out_ipv6_route_table:
110 kfree(ipv6_route_table);
116 static void __net_exit ipv6_sysctl_net_exit(struct net *net)
118 struct ctl_table *ipv6_table;
119 struct ctl_table *ipv6_route_table;
120 struct ctl_table *ipv6_icmp_table;
122 ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
123 ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
124 ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;
126 unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
127 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
128 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
131 kfree(ipv6_route_table);
132 kfree(ipv6_icmp_table);
135 static struct pernet_operations ipv6_sysctl_net_ops = {
136 .init = ipv6_sysctl_net_init,
137 .exit = ipv6_sysctl_net_exit,
140 static struct ctl_table_header *ip6_header;
142 int ipv6_sysctl_register(void)
146 ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
147 if (ip6_header == NULL)
150 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
157 unregister_net_sysctl_table(ip6_header);
161 void ipv6_sysctl_unregister(void)
163 unregister_net_sysctl_table(ip6_header);
164 unregister_pernet_subsys(&ipv6_sysctl_net_ops);