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
);