[deliverable/linux.git] / net / ipv6 / sysctl_net_ipv6.c

/*
 * sysctl_net_ipv6.c: sysctl interface to net IPV6 subsystem.
 *
 * Changes:
 * YOSHIFUJI Hideaki @USAGI:	added icmp sysctl table.
 */

#include <linux/mm.h>
#include <linux/sysctl.h>
#include <linux/in6.h>
#include <linux/ipv6.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <net/ndisc.h>
#include <net/ipv6.h>
#include <net/addrconf.h>
#include <net/inet_frag.h>

static int one = 1;

static struct ctl_table ipv6_table_template[] = {
	{
		.procname	= "bindv6only",
		.data		= &init_net.ipv6.sysctl.bindv6only,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec
	},
	{
		.procname	= "anycast_src_echo_reply",
		.data		= &init_net.ipv6.sysctl.anycast_src_echo_reply,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec
	},
	{
		.procname	= "flowlabel_consistency",
		.data		= &init_net.ipv6.sysctl.flowlabel_consistency,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec
	},
	{
		.procname	= "auto_flowlabels",
		.data		= &init_net.ipv6.sysctl.auto_flowlabels,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec
	},
	{
		.procname	= "fwmark_reflect",
		.data		= &init_net.ipv6.sysctl.fwmark_reflect,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec
	},
	{
		.procname	= "idgen_retries",
		.data		= &init_net.ipv6.sysctl.idgen_retries,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec,
	},
	{
		.procname	= "idgen_delay",
		.data		= &init_net.ipv6.sysctl.idgen_delay,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_jiffies,
	},
	{
		.procname	= "flowlabel_state_ranges",
		.data		= &init_net.ipv6.sysctl.flowlabel_state_ranges,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec
	},
	{
		.procname	= "ip_nonlocal_bind",
		.data		= &init_net.ipv6.sysctl.ip_nonlocal_bind,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec
	},
	{ }
};

static struct ctl_table ipv6_rotable[] = {
	{
		.procname	= "mld_max_msf",
		.data		= &sysctl_mld_max_msf,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec
	},
	{
		.procname	= "mld_qrv",
		.data		= &sysctl_mld_qrv,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_minmax,
		.extra1		= &one
	},
	{ }
};

static int __net_init ipv6_sysctl_net_init(struct net *net)
{
	struct ctl_table *ipv6_table;
	struct ctl_table *ipv6_route_table;
	struct ctl_table *ipv6_icmp_table;
	int err;

	err = -ENOMEM;
	ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
			     GFP_KERNEL);
	if (!ipv6_table)
		goto out;
	ipv6_table[0].data = &net->ipv6.sysctl.bindv6only;
	ipv6_table[1].data = &net->ipv6.sysctl.anycast_src_echo_reply;
	ipv6_table[2].data = &net->ipv6.sysctl.flowlabel_consistency;
	ipv6_table[3].data = &net->ipv6.sysctl.auto_flowlabels;
	ipv6_table[4].data = &net->ipv6.sysctl.fwmark_reflect;
	ipv6_table[5].data = &net->ipv6.sysctl.idgen_retries;
	ipv6_table[6].data = &net->ipv6.sysctl.idgen_delay;
	ipv6_table[7].data = &net->ipv6.sysctl.flowlabel_state_ranges;
	ipv6_table[8].data = &net->ipv6.sysctl.ip_nonlocal_bind;

	ipv6_route_table = ipv6_route_sysctl_init(net);
	if (!ipv6_route_table)
		goto out_ipv6_table;

	ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
	if (!ipv6_icmp_table)
		goto out_ipv6_route_table;

	net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
	if (!net->ipv6.sysctl.hdr)
		goto out_ipv6_icmp_table;

	net->ipv6.sysctl.route_hdr =
		register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
	if (!net->ipv6.sysctl.route_hdr)
		goto out_unregister_ipv6_table;

	net->ipv6.sysctl.icmp_hdr =
		register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
	if (!net->ipv6.sysctl.icmp_hdr)
		goto out_unregister_route_table;

	err = 0;
out:
	return err;
out_unregister_route_table:
	unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
out_unregister_ipv6_table:
	unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
out_ipv6_icmp_table:
	kfree(ipv6_icmp_table);
out_ipv6_route_table:
	kfree(ipv6_route_table);
out_ipv6_table:
	kfree(ipv6_table);
	goto out;
}

static void __net_exit ipv6_sysctl_net_exit(struct net *net)
{
	struct ctl_table *ipv6_table;
	struct ctl_table *ipv6_route_table;
	struct ctl_table *ipv6_icmp_table;

	ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
	ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
	ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;

	unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
	unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
	unregister_net_sysctl_table(net->ipv6.sysctl.hdr);

	kfree(ipv6_table);
	kfree(ipv6_route_table);
	kfree(ipv6_icmp_table);
}

static struct pernet_operations ipv6_sysctl_net_ops = {
	.init = ipv6_sysctl_net_init,
	.exit = ipv6_sysctl_net_exit,
};

static struct ctl_table_header *ip6_header;

int ipv6_sysctl_register(void)
{
	int err = -ENOMEM;

	ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
	if (!ip6_header)
		goto out;

	err = register_pernet_subsys(&ipv6_sysctl_net_ops);
	if (err)
		goto err_pernet;
out:
	return err;

err_pernet:
	unregister_net_sysctl_table(ip6_header);
	goto out;
}

void ipv6_sysctl_unregister(void)
{
	unregister_net_sysctl_table(ip6_header);
	unregister_pernet_subsys(&ipv6_sysctl_net_ops);
}
Commit	Line	Data
1da177e4 LT	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>
1da177e4 LT	10	#include <linux/in6.h>
1da177e4 LT	11	#include <linux/ipv6.h>
5a0e3ad6	12	#include <linux/slab.h>
bc3b2d7f	13	#include <linux/export.h>
1da177e4 LT	14	#include <net/ndisc.h>
	15	#include <net/ipv6.h>
	16	#include <net/addrconf.h>
04128f23	17	#include <net/inet_frag.h>
1da177e4	18
2f711939 HFS	19	static int one = 1;
2f711939 HFS	20
fe2c6338	21	static struct ctl_table ipv6_table_template[] = {
1da177e4	22	{
1da177e4	23	.procname = "bindv6only",
99bc9c4e	24	.data = &init_net.ipv6.sysctl.bindv6only,
1da177e4 LT	25	.maxlen = sizeof(int),
1da177e4 LT	26	.mode = 0644,
6d9f239a	27	.proc_handler = proc_dointvec
1da177e4	28	},
509aba3b FLB	29	{
509aba3b FLB	30	.procname = "anycast_src_echo_reply",
ec35b61e	31	.data = &init_net.ipv6.sysctl.anycast_src_echo_reply,
509aba3b FLB	32	.maxlen = sizeof(int),
	33	.mode = 0644,
	34	.proc_handler = proc_dointvec
	35	},
6444f72b FF	36	{
	37	.procname = "flowlabel_consistency",
	38	.data = &init_net.ipv6.sysctl.flowlabel_consistency,
	39	.maxlen = sizeof(int),
	40	.mode = 0644,
	41	.proc_handler = proc_dointvec
	42	},
cb1ce2ef TH	43	{
	44	.procname = "auto_flowlabels",
	45	.data = &init_net.ipv6.sysctl.auto_flowlabels,
	46	.maxlen = sizeof(int),
	47	.mode = 0644,
	48	.proc_handler = proc_dointvec
	49	},
e110861f LC	50	{
	51	.procname = "fwmark_reflect",
	52	.data = &init_net.ipv6.sysctl.fwmark_reflect,
	53	.maxlen = sizeof(int),
	54	.mode = 0644,
	55	.proc_handler = proc_dointvec
	56	},
1855b7c3 HFS	57	{
	58	.procname = "idgen_retries",
	59	.data = &init_net.ipv6.sysctl.idgen_retries,
	60	.maxlen = sizeof(int),
	61	.mode = 0644,
	62	.proc_handler = proc_dointvec,
	63	},
	64	{
	65	.procname = "idgen_delay",
	66	.data = &init_net.ipv6.sysctl.idgen_delay,
	67	.maxlen = sizeof(int),
	68	.mode = 0644,
	69	.proc_handler = proc_dointvec_jiffies,
	70	},
82a584b7 TH	71	{
	72	.procname = "flowlabel_state_ranges",
	73	.data = &init_net.ipv6.sysctl.flowlabel_state_ranges,
	74	.maxlen = sizeof(int),
	75	.mode = 0644,
	76	.proc_handler = proc_dointvec
	77	},
35a256fe TH	78	{
	79	.procname = "ip_nonlocal_bind",
	80	.data = &init_net.ipv6.sysctl.ip_nonlocal_bind,
	81	.maxlen = sizeof(int),
	82	.mode = 0644,
	83	.proc_handler = proc_dointvec
	84	},
f8572d8f	85	{ }
34ac2573 PE	86	};
34ac2573 PE	87
fe2c6338	88	static struct ctl_table ipv6_rotable[] = {
1da177e4	89	{
1da177e4 LT	90	.procname = "mld_max_msf",
	91	.data = &sysctl_mld_max_msf,
	92	.maxlen = sizeof(int),
	93	.mode = 0644,
6d9f239a	94	.proc_handler = proc_dointvec
1da177e4	95	},
2f711939 HFS	96	{
	97	.procname = "mld_qrv",
	98	.data = &sysctl_mld_qrv,
	99	.maxlen = sizeof(int),
	100	.mode = 0644,
	101	.proc_handler = proc_dointvec_minmax,
	102	.extra1 = &one
	103	},
f8572d8f	104	{ }
1da177e4 LT	105	};
1da177e4 LT	106
2c8c1e72	107	static int __net_init ipv6_sysctl_net_init(struct net *net)
1da177e4	108	{
760f2d01 DL	109	struct ctl_table *ipv6_table;
	110	struct ctl_table *ipv6_route_table;
	111	struct ctl_table *ipv6_icmp_table;
	112	int err;
	113
	114	err = -ENOMEM;
	115	ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template),
	116	GFP_KERNEL);
	117	if (!ipv6_table)
	118	goto out;
6dceb036	119	ipv6_table[0].data = &net->ipv6.sysctl.bindv6only;
ec35b61e	120	ipv6_table[1].data = &net->ipv6.sysctl.anycast_src_echo_reply;
6444f72b	121	ipv6_table[2].data = &net->ipv6.sysctl.flowlabel_consistency;
cb1ce2ef	122	ipv6_table[3].data = &net->ipv6.sysctl.auto_flowlabels;
d247b6ab	123	ipv6_table[4].data = &net->ipv6.sysctl.fwmark_reflect;
1855b7c3 HFS	124	ipv6_table[5].data = &net->ipv6.sysctl.idgen_retries;
1855b7c3 HFS	125	ipv6_table[6].data = &net->ipv6.sysctl.idgen_delay;
82a584b7	126	ipv6_table[7].data = &net->ipv6.sysctl.flowlabel_state_ranges;
35a256fe	127	ipv6_table[8].data = &net->ipv6.sysctl.ip_nonlocal_bind;
760f2d01 DL	128
	129	ipv6_route_table = ipv6_route_sysctl_init(net);
	130	if (!ipv6_route_table)
	131	goto out_ipv6_table;
	132
	133	ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
	134	if (!ipv6_icmp_table)
	135	goto out_ipv6_route_table;
760f2d01	136
6dceb036 EB	137	net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
6dceb036 EB	138	if (!net->ipv6.sysctl.hdr)
760f2d01 DL	139	goto out_ipv6_icmp_table;
760f2d01 DL	140
6dceb036 EB	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;
	145
	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;
	150
760f2d01 DL	151	err = 0;
	152	out:
	153	return err;
6dceb036 EB	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);
760f2d01 DL	158	out_ipv6_icmp_table:
	159	kfree(ipv6_icmp_table);
	160	out_ipv6_route_table:
	161	kfree(ipv6_route_table);
	162	out_ipv6_table:
	163	kfree(ipv6_table);
	164	goto out;
1da177e4 LT	165	}
1da177e4 LT	166
2c8c1e72	167	static void __net_exit ipv6_sysctl_net_exit(struct net *net)
89918fc2	168	{
760f2d01 DL	169	struct ctl_table *ipv6_table;
	170	struct ctl_table *ipv6_route_table;
	171	struct ctl_table *ipv6_icmp_table;
	172
6dceb036 EB	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;
760f2d01	176
6dceb036 EB	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);
760f2d01 DL	180
	181	kfree(ipv6_table);
	182	kfree(ipv6_route_table);
	183	kfree(ipv6_icmp_table);
89918fc2 DL	184	}
	185
	186	static struct pernet_operations ipv6_sysctl_net_ops = {
	187	.init = ipv6_sysctl_net_init,
	188	.exit = ipv6_sysctl_net_exit,
	189	};
	190
34ac2573 PE	191	static struct ctl_table_header *ip6_header;
34ac2573 PE	192
89918fc2 DL	193	int ipv6_sysctl_register(void)
89918fc2 DL	194	{
c19a28e1	195	int err = -ENOMEM;
34ac2573	196
43444757	197	ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
63159f29	198	if (!ip6_header)
34ac2573 PE	199	goto out;
	200
	201	err = register_pernet_subsys(&ipv6_sysctl_net_ops);
	202	if (err)
	203	goto err_pernet;
	204	out:
	205	return err;
	206
	207	err_pernet:
	208	unregister_net_sysctl_table(ip6_header);
	209	goto out;
89918fc2 DL	210	}
89918fc2 DL	211
1da177e4 LT	212	void ipv6_sysctl_unregister(void)
1da177e4 LT	213	{
34ac2573	214	unregister_net_sysctl_table(ip6_header);
89918fc2	215	unregister_pernet_subsys(&ipv6_sysctl_net_ops);
1da177e4	216	}