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>
18 #ifdef CONFIG_NETLABEL
19 #include <net/calipso.h>
23 static int auto_flowlabels_min;
24 static int auto_flowlabels_max = IP6_AUTO_FLOW_LABEL_MAX;
27 static struct ctl_table ipv6_table_template[] = {
29 .procname = "bindv6only",
30 .data = &init_net.ipv6.sysctl.bindv6only,
31 .maxlen = sizeof(int),
33 .proc_handler = proc_dointvec
36 .procname = "anycast_src_echo_reply",
37 .data = &init_net.ipv6.sysctl.anycast_src_echo_reply,
38 .maxlen = sizeof(int),
40 .proc_handler = proc_dointvec
43 .procname = "flowlabel_consistency",
44 .data = &init_net.ipv6.sysctl.flowlabel_consistency,
45 .maxlen = sizeof(int),
47 .proc_handler = proc_dointvec
50 .procname = "auto_flowlabels",
51 .data = &init_net.ipv6.sysctl.auto_flowlabels,
52 .maxlen = sizeof(int),
54 .proc_handler = proc_dointvec_minmax,
55 .extra1 = &auto_flowlabels_min,
56 .extra2 = &auto_flowlabels_max
59 .procname = "fwmark_reflect",
60 .data = &init_net.ipv6.sysctl.fwmark_reflect,
61 .maxlen = sizeof(int),
63 .proc_handler = proc_dointvec
66 .procname = "idgen_retries",
67 .data = &init_net.ipv6.sysctl.idgen_retries,
68 .maxlen = sizeof(int),
70 .proc_handler = proc_dointvec,
73 .procname = "idgen_delay",
74 .data = &init_net.ipv6.sysctl.idgen_delay,
75 .maxlen = sizeof(int),
77 .proc_handler = proc_dointvec_jiffies,
80 .procname = "flowlabel_state_ranges",
81 .data = &init_net.ipv6.sysctl.flowlabel_state_ranges,
82 .maxlen = sizeof(int),
84 .proc_handler = proc_dointvec
87 .procname = "ip_nonlocal_bind",
88 .data = &init_net.ipv6.sysctl.ip_nonlocal_bind,
89 .maxlen = sizeof(int),
91 .proc_handler = proc_dointvec
94 .procname = "flowlabel_reflect",
95 .data = &init_net.ipv6.sysctl.flowlabel_reflect,
96 .maxlen = sizeof(int),
98 .proc_handler = proc_dointvec,
103 static struct ctl_table ipv6_rotable[] = {
105 .procname = "mld_max_msf",
106 .data = &sysctl_mld_max_msf,
107 .maxlen = sizeof(int),
109 .proc_handler = proc_dointvec
112 .procname = "mld_qrv",
113 .data = &sysctl_mld_qrv,
114 .maxlen = sizeof(int),
116 .proc_handler = proc_dointvec_minmax,
119 #ifdef CONFIG_NETLABEL
121 .procname = "calipso_cache_enable",
122 .data = &calipso_cache_enabled,
123 .maxlen = sizeof(int),
125 .proc_handler = proc_dointvec,
128 .procname = "calipso_cache_bucket_size",
129 .data = &calipso_cache_bucketsize,
130 .maxlen = sizeof(int),
132 .proc_handler = proc_dointvec,
134 #endif /* CONFIG_NETLABEL */
138 static int __net_init ipv6_sysctl_net_init(struct net *net)
140 struct ctl_table *ipv6_table;
141 struct ctl_table *ipv6_route_table;
142 struct ctl_table *ipv6_icmp_table;
146 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
150 ipv6_table[0].data = &net->ipv6.sysctl.bindv6only;
151 ipv6_table[1].data = &net->ipv6.sysctl.anycast_src_echo_reply;
152 ipv6_table[2].data = &net->ipv6.sysctl.flowlabel_consistency;
153 ipv6_table[3].data = &net->ipv6.sysctl.auto_flowlabels;
154 ipv6_table[4].data = &net->ipv6.sysctl.fwmark_reflect;
155 ipv6_table[5].data = &net->ipv6.sysctl.idgen_retries;
156 ipv6_table[6].data = &net->ipv6.sysctl.idgen_delay;
157 ipv6_table[7].data = &net->ipv6.sysctl.flowlabel_state_ranges;
158 ipv6_table[8].data = &net->ipv6.sysctl.ip_nonlocal_bind;
159 ipv6_table[9].data = &net->ipv6.sysctl.flowlabel_reflect;
161 ipv6_route_table = ipv6_route_sysctl_init(net);
162 if (!ipv6_route_table)
165 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
166 if (!ipv6_icmp_table)
167 goto out_ipv6_route_table;
169 net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
170 if (!net->ipv6.sysctl.hdr)
171 goto out_ipv6_icmp_table;
173 net->ipv6.sysctl.route_hdr =
174 register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
175 if (!net->ipv6.sysctl.route_hdr)
176 goto out_unregister_ipv6_table;
178 net->ipv6.sysctl.icmp_hdr =
179 register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
180 if (!net->ipv6.sysctl.icmp_hdr)
181 goto out_unregister_route_table;
186 out_unregister_route_table:
187 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
188 out_unregister_ipv6_table:
189 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
191 kfree(ipv6_icmp_table);
192 out_ipv6_route_table:
193 kfree(ipv6_route_table);
199 static void __net_exit ipv6_sysctl_net_exit(struct net *net)
201 struct ctl_table *ipv6_table;
202 struct ctl_table *ipv6_route_table;
203 struct ctl_table *ipv6_icmp_table;
205 ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
206 ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
207 ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;
209 unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
210 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
211 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
214 kfree(ipv6_route_table);
215 kfree(ipv6_icmp_table);
218 static struct pernet_operations ipv6_sysctl_net_ops = {
219 .init = ipv6_sysctl_net_init,
220 .exit = ipv6_sysctl_net_exit,
223 static struct ctl_table_header *ip6_header;
225 int ipv6_sysctl_register(void)
229 ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
233 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
240 unregister_net_sysctl_table(ip6_header);
244 void ipv6_sysctl_unregister(void)
246 unregister_net_sysctl_table(ip6_header);
247 unregister_pernet_subsys(&ipv6_sysctl_net_ops);