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1/*
2 * sysctl_net_ipv6.c: sysctl interface to net IPV6 subsystem.
3 *
4 * Changes:
5 * YOSHIFUJI Hideaki @USAGI: added icmp sysctl table.
6 */
7
8#include <linux/mm.h>
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>
15#include <net/ipv6.h>
16#include <net/addrconf.h>
17#include <net/inet_frag.h>
18
19static struct ctl_table ipv6_table_template[] = {
20 {
21 .procname = "bindv6only",
22 .data = &init_net.ipv6.sysctl.bindv6only,
23 .maxlen = sizeof(int),
24 .mode = 0644,
25 .proc_handler = proc_dointvec
26 },
27 {
28 .procname = "anycast_src_echo_reply",
29 .data = &init_net.ipv6.sysctl.anycast_src_echo_reply,
30 .maxlen = sizeof(int),
31 .mode = 0644,
32 .proc_handler = proc_dointvec
33 },
34 {
35 .procname = "flowlabel_consistency",
36 .data = &init_net.ipv6.sysctl.flowlabel_consistency,
37 .maxlen = sizeof(int),
38 .mode = 0644,
39 .proc_handler = proc_dointvec
40 },
41 { }
42};
43
44static struct ctl_table ipv6_rotable[] = {
45 {
46 .procname = "mld_max_msf",
47 .data = &sysctl_mld_max_msf,
48 .maxlen = sizeof(int),
49 .mode = 0644,
50 .proc_handler = proc_dointvec
51 },
52 { }
53};
54
55static int __net_init ipv6_sysctl_net_init(struct net *net)
56{
57 struct ctl_table *ipv6_table;
58 struct ctl_table *ipv6_route_table;
59 struct ctl_table *ipv6_icmp_table;
60 int err;
61
62 err = -ENOMEM;
63 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
64 GFP_KERNEL);
65 if (!ipv6_table)
66 goto out;
67 ipv6_table[0].data = &net->ipv6.sysctl.bindv6only;
68 ipv6_table[1].data = &net->ipv6.sysctl.anycast_src_echo_reply;
69 ipv6_table[2].data = &net->ipv6.sysctl.flowlabel_consistency;
70
71 ipv6_route_table = ipv6_route_sysctl_init(net);
72 if (!ipv6_route_table)
73 goto out_ipv6_table;
74
75 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
76 if (!ipv6_icmp_table)
77 goto out_ipv6_route_table;
78
79 net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
80 if (!net->ipv6.sysctl.hdr)
81 goto out_ipv6_icmp_table;
82
83 net->ipv6.sysctl.route_hdr =
84 register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
85 if (!net->ipv6.sysctl.route_hdr)
86 goto out_unregister_ipv6_table;
87
88 net->ipv6.sysctl.icmp_hdr =
89 register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
90 if (!net->ipv6.sysctl.icmp_hdr)
91 goto out_unregister_route_table;
92
93 err = 0;
94out:
95 return err;
96out_unregister_route_table:
97 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
98out_unregister_ipv6_table:
99 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
100out_ipv6_icmp_table:
101 kfree(ipv6_icmp_table);
102out_ipv6_route_table:
103 kfree(ipv6_route_table);
104out_ipv6_table:
105 kfree(ipv6_table);
106 goto out;
107}
108
109static void __net_exit ipv6_sysctl_net_exit(struct net *net)
110{
111 struct ctl_table *ipv6_table;
112 struct ctl_table *ipv6_route_table;
113 struct ctl_table *ipv6_icmp_table;
114
115 ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
116 ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
117 ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;
118
119 unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
120 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
121 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
122
123 kfree(ipv6_table);
124 kfree(ipv6_route_table);
125 kfree(ipv6_icmp_table);
126}
127
128static struct pernet_operations ipv6_sysctl_net_ops = {
129 .init = ipv6_sysctl_net_init,
130 .exit = ipv6_sysctl_net_exit,
131};
132
133static struct ctl_table_header *ip6_header;
134
135int ipv6_sysctl_register(void)
136{
137 int err = -ENOMEM;
138
139 ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
140 if (ip6_header == NULL)
141 goto out;
142
143 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
144 if (err)
145 goto err_pernet;
146out:
147 return err;
148
149err_pernet:
150 unregister_net_sysctl_table(ip6_header);
151 goto out;
152}
153
154void ipv6_sysctl_unregister(void)
155{
156 unregister_net_sysctl_table(ip6_header);
157 unregister_pernet_subsys(&ipv6_sysctl_net_ops);
158}
1/*
2 * sysctl_net_ipv6.c: sysctl interface to net IPV6 subsystem.
3 *
4 * Changes:
5 * YOSHIFUJI Hideaki @USAGI: added icmp sysctl table.
6 */
7
8#include <linux/mm.h>
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>
15#include <net/ipv6.h>
16#include <net/addrconf.h>
17#include <net/inet_frag.h>
18
19static ctl_table ipv6_table_template[] = {
20 {
21 .procname = "bindv6only",
22 .data = &init_net.ipv6.sysctl.bindv6only,
23 .maxlen = sizeof(int),
24 .mode = 0644,
25 .proc_handler = proc_dointvec
26 },
27 { }
28};
29
30static ctl_table ipv6_rotable[] = {
31 {
32 .procname = "mld_max_msf",
33 .data = &sysctl_mld_max_msf,
34 .maxlen = sizeof(int),
35 .mode = 0644,
36 .proc_handler = proc_dointvec
37 },
38 { }
39};
40
41static int __net_init ipv6_sysctl_net_init(struct net *net)
42{
43 struct ctl_table *ipv6_table;
44 struct ctl_table *ipv6_route_table;
45 struct ctl_table *ipv6_icmp_table;
46 int err;
47
48 err = -ENOMEM;
49 ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
50 GFP_KERNEL);
51 if (!ipv6_table)
52 goto out;
53 ipv6_table[0].data = &net->ipv6.sysctl.bindv6only;
54
55 ipv6_route_table = ipv6_route_sysctl_init(net);
56 if (!ipv6_route_table)
57 goto out_ipv6_table;
58
59 ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
60 if (!ipv6_icmp_table)
61 goto out_ipv6_route_table;
62
63 net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
64 if (!net->ipv6.sysctl.hdr)
65 goto out_ipv6_icmp_table;
66
67 net->ipv6.sysctl.route_hdr =
68 register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
69 if (!net->ipv6.sysctl.route_hdr)
70 goto out_unregister_ipv6_table;
71
72 net->ipv6.sysctl.icmp_hdr =
73 register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
74 if (!net->ipv6.sysctl.icmp_hdr)
75 goto out_unregister_route_table;
76
77 err = 0;
78out:
79 return err;
80out_unregister_route_table:
81 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
82out_unregister_ipv6_table:
83 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
84out_ipv6_icmp_table:
85 kfree(ipv6_icmp_table);
86out_ipv6_route_table:
87 kfree(ipv6_route_table);
88out_ipv6_table:
89 kfree(ipv6_table);
90 goto out;
91}
92
93static void __net_exit ipv6_sysctl_net_exit(struct net *net)
94{
95 struct ctl_table *ipv6_table;
96 struct ctl_table *ipv6_route_table;
97 struct ctl_table *ipv6_icmp_table;
98
99 ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
100 ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
101 ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;
102
103 unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
104 unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
105 unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
106
107 kfree(ipv6_table);
108 kfree(ipv6_route_table);
109 kfree(ipv6_icmp_table);
110}
111
112static struct pernet_operations ipv6_sysctl_net_ops = {
113 .init = ipv6_sysctl_net_init,
114 .exit = ipv6_sysctl_net_exit,
115};
116
117static struct ctl_table_header *ip6_header;
118
119int ipv6_sysctl_register(void)
120{
121 int err = -ENOMEM;
122
123 ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
124 if (ip6_header == NULL)
125 goto out;
126
127 err = register_pernet_subsys(&ipv6_sysctl_net_ops);
128 if (err)
129 goto err_pernet;
130out:
131 return err;
132
133err_pernet:
134 unregister_net_sysctl_table(ip6_header);
135 goto out;
136}
137
138void ipv6_sysctl_unregister(void)
139{
140 unregister_net_sysctl_table(ip6_header);
141 unregister_pernet_subsys(&ipv6_sysctl_net_ops);
142}