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>
21 static struct ctl_table ipv6_table_template
[] = {
23 .procname
= "bindv6only",
24 .data
= &init_net
.ipv6
.sysctl
.bindv6only
,
25 .maxlen
= sizeof(int),
27 .proc_handler
= proc_dointvec
30 .procname
= "anycast_src_echo_reply",
31 .data
= &init_net
.ipv6
.sysctl
.anycast_src_echo_reply
,
32 .maxlen
= sizeof(int),
34 .proc_handler
= proc_dointvec
37 .procname
= "flowlabel_consistency",
38 .data
= &init_net
.ipv6
.sysctl
.flowlabel_consistency
,
39 .maxlen
= sizeof(int),
41 .proc_handler
= proc_dointvec
44 .procname
= "auto_flowlabels",
45 .data
= &init_net
.ipv6
.sysctl
.auto_flowlabels
,
46 .maxlen
= sizeof(int),
48 .proc_handler
= proc_dointvec
51 .procname
= "fwmark_reflect",
52 .data
= &init_net
.ipv6
.sysctl
.fwmark_reflect
,
53 .maxlen
= sizeof(int),
55 .proc_handler
= proc_dointvec
58 .procname
= "idgen_retries",
59 .data
= &init_net
.ipv6
.sysctl
.idgen_retries
,
60 .maxlen
= sizeof(int),
62 .proc_handler
= proc_dointvec
,
65 .procname
= "idgen_delay",
66 .data
= &init_net
.ipv6
.sysctl
.idgen_delay
,
67 .maxlen
= sizeof(int),
69 .proc_handler
= proc_dointvec_jiffies
,
72 .procname
= "flowlabel_state_ranges",
73 .data
= &init_net
.ipv6
.sysctl
.flowlabel_state_ranges
,
74 .maxlen
= sizeof(int),
76 .proc_handler
= proc_dointvec
79 .procname
= "ip_nonlocal_bind",
80 .data
= &init_net
.ipv6
.sysctl
.ip_nonlocal_bind
,
81 .maxlen
= sizeof(int),
83 .proc_handler
= proc_dointvec
88 static struct ctl_table ipv6_rotable
[] = {
90 .procname
= "mld_max_msf",
91 .data
= &sysctl_mld_max_msf
,
92 .maxlen
= sizeof(int),
94 .proc_handler
= proc_dointvec
97 .procname
= "mld_qrv",
98 .data
= &sysctl_mld_qrv
,
99 .maxlen
= sizeof(int),
101 .proc_handler
= proc_dointvec_minmax
,
107 static int __net_init
ipv6_sysctl_net_init(struct net
*net
)
109 struct ctl_table
*ipv6_table
;
110 struct ctl_table
*ipv6_route_table
;
111 struct ctl_table
*ipv6_icmp_table
;
115 ipv6_table
= kmemdup(ipv6_table_template
, sizeof(ipv6_table_template
),
119 ipv6_table
[0].data
= &net
->ipv6
.sysctl
.bindv6only
;
120 ipv6_table
[1].data
= &net
->ipv6
.sysctl
.anycast_src_echo_reply
;
121 ipv6_table
[2].data
= &net
->ipv6
.sysctl
.flowlabel_consistency
;
122 ipv6_table
[3].data
= &net
->ipv6
.sysctl
.auto_flowlabels
;
123 ipv6_table
[4].data
= &net
->ipv6
.sysctl
.fwmark_reflect
;
124 ipv6_table
[5].data
= &net
->ipv6
.sysctl
.idgen_retries
;
125 ipv6_table
[6].data
= &net
->ipv6
.sysctl
.idgen_delay
;
126 ipv6_table
[7].data
= &net
->ipv6
.sysctl
.flowlabel_state_ranges
;
127 ipv6_table
[8].data
= &net
->ipv6
.sysctl
.ip_nonlocal_bind
;
129 ipv6_route_table
= ipv6_route_sysctl_init(net
);
130 if (!ipv6_route_table
)
133 ipv6_icmp_table
= ipv6_icmp_sysctl_init(net
);
134 if (!ipv6_icmp_table
)
135 goto out_ipv6_route_table
;
137 net
->ipv6
.sysctl
.hdr
= register_net_sysctl(net
, "net/ipv6", ipv6_table
);
138 if (!net
->ipv6
.sysctl
.hdr
)
139 goto out_ipv6_icmp_table
;
141 net
->ipv6
.sysctl
.route_hdr
=
142 register_net_sysctl(net
, "net/ipv6/route", ipv6_route_table
);
143 if (!net
->ipv6
.sysctl
.route_hdr
)
144 goto out_unregister_ipv6_table
;
146 net
->ipv6
.sysctl
.icmp_hdr
=
147 register_net_sysctl(net
, "net/ipv6/icmp", ipv6_icmp_table
);
148 if (!net
->ipv6
.sysctl
.icmp_hdr
)
149 goto out_unregister_route_table
;
154 out_unregister_route_table
:
155 unregister_net_sysctl_table(net
->ipv6
.sysctl
.route_hdr
);
156 out_unregister_ipv6_table
:
157 unregister_net_sysctl_table(net
->ipv6
.sysctl
.hdr
);
159 kfree(ipv6_icmp_table
);
160 out_ipv6_route_table
:
161 kfree(ipv6_route_table
);
167 static void __net_exit
ipv6_sysctl_net_exit(struct net
*net
)
169 struct ctl_table
*ipv6_table
;
170 struct ctl_table
*ipv6_route_table
;
171 struct ctl_table
*ipv6_icmp_table
;
173 ipv6_table
= net
->ipv6
.sysctl
.hdr
->ctl_table_arg
;
174 ipv6_route_table
= net
->ipv6
.sysctl
.route_hdr
->ctl_table_arg
;
175 ipv6_icmp_table
= net
->ipv6
.sysctl
.icmp_hdr
->ctl_table_arg
;
177 unregister_net_sysctl_table(net
->ipv6
.sysctl
.icmp_hdr
);
178 unregister_net_sysctl_table(net
->ipv6
.sysctl
.route_hdr
);
179 unregister_net_sysctl_table(net
->ipv6
.sysctl
.hdr
);
182 kfree(ipv6_route_table
);
183 kfree(ipv6_icmp_table
);
186 static struct pernet_operations ipv6_sysctl_net_ops
= {
187 .init
= ipv6_sysctl_net_init
,
188 .exit
= ipv6_sysctl_net_exit
,
191 static struct ctl_table_header
*ip6_header
;
193 int ipv6_sysctl_register(void)
197 ip6_header
= register_net_sysctl(&init_net
, "net/ipv6", ipv6_rotable
);
201 err
= register_pernet_subsys(&ipv6_sysctl_net_ops
);
208 unregister_net_sysctl_table(ip6_header
);
212 void ipv6_sysctl_unregister(void)
214 unregister_net_sysctl_table(ip6_header
);
215 unregister_pernet_subsys(&ipv6_sysctl_net_ops
);