[linux-2.6-block.git] / net / ipv6 / fib6_rules.c

/*
 * net/ipv6/fib6_rules.c	IPv6 Routing Policy Rules
 *
 * Copyright (C)2003-2006 Helsinki University of Technology
 * Copyright (C)2003-2006 USAGI/WIDE Project
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License as
 *	published by the Free Software Foundation, version 2.
 *
 * Authors
 *	Thomas Graf		<tgraf@suug.ch>
 *	Ville Nuorvala		<vnuorval@tcs.hut.fi>
 */

#include <linux/netdevice.h>
#include <linux/notifier.h>
#include <linux/export.h>

#include <net/fib_rules.h>
#include <net/ipv6.h>
#include <net/addrconf.h>
#include <net/ip6_route.h>
#include <net/netlink.h>

struct fib6_rule {
	struct fib_rule		common;
	struct rt6key		src;
	struct rt6key		dst;
	u8			tclass;
};

static bool fib6_rule_matchall(const struct fib_rule *rule)
{
	struct fib6_rule *r = container_of(rule, struct fib6_rule, common);

	if (r->dst.plen || r->src.plen || r->tclass)
		return false;
	return fib_rule_matchall(rule);
}

bool fib6_rule_default(const struct fib_rule *rule)
{
	if (!fib6_rule_matchall(rule) || rule->action != FR_ACT_TO_TBL ||
	    rule->l3mdev)
		return false;
	if (rule->table != RT6_TABLE_LOCAL && rule->table != RT6_TABLE_MAIN)
		return false;
	return true;
}
EXPORT_SYMBOL_GPL(fib6_rule_default);

int fib6_rules_dump(struct net *net, struct notifier_block *nb)
{
	return fib_rules_dump(net, nb, AF_INET6);
}

unsigned int fib6_rules_seq_read(struct net *net)
{
	return fib_rules_seq_read(net, AF_INET6);
}

struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6,
				   int flags, pol_lookup_t lookup)
{
	struct fib_lookup_arg arg = {
		.lookup_ptr = lookup,
		.flags = FIB_LOOKUP_NOREF,
	};

	/* update flow if oif or iif point to device enslaved to l3mdev */
	l3mdev_update_flow(net, flowi6_to_flowi(fl6));

	fib_rules_lookup(net->ipv6.fib6_rules_ops,
			 flowi6_to_flowi(fl6), flags, &arg);

	if (arg.result)
		return arg.result;

	dst_hold(&net->ipv6.ip6_null_entry->dst);
	return &net->ipv6.ip6_null_entry->dst;
}

static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
			    int flags, struct fib_lookup_arg *arg)
{
	struct flowi6 *flp6 = &flp->u.ip6;
	struct rt6_info *rt = NULL;
	struct fib6_table *table;
	struct net *net = rule->fr_net;
	pol_lookup_t lookup = arg->lookup_ptr;
	int err = 0;
	u32 tb_id;

	switch (rule->action) {
	case FR_ACT_TO_TBL:
		break;
	case FR_ACT_UNREACHABLE:
		err = -ENETUNREACH;
		rt = net->ipv6.ip6_null_entry;
		goto discard_pkt;
	default:
	case FR_ACT_BLACKHOLE:
		err = -EINVAL;
		rt = net->ipv6.ip6_blk_hole_entry;
		goto discard_pkt;
	case FR_ACT_PROHIBIT:
		err = -EACCES;
		rt = net->ipv6.ip6_prohibit_entry;
		goto discard_pkt;
	}

	tb_id = fib_rule_get_table(rule, arg);
	table = fib6_get_table(net, tb_id);
	if (!table) {
		err = -EAGAIN;
		goto out;
	}

	rt = lookup(net, table, flp6, flags);
	if (rt != net->ipv6.ip6_null_entry) {
		struct fib6_rule *r = (struct fib6_rule *)rule;

		/*
		 * If we need to find a source address for this traffic,
		 * we check the result if it meets requirement of the rule.
		 */
		if ((rule->flags & FIB_RULE_FIND_SADDR) &&
		    r->src.plen && !(flags & RT6_LOOKUP_F_HAS_SADDR)) {
			struct in6_addr saddr;

			if (ipv6_dev_get_saddr(net,
					       ip6_dst_idev(&rt->dst)->dev,
					       &flp6->daddr,
					       rt6_flags2srcprefs(flags),
					       &saddr))
				goto again;
			if (!ipv6_prefix_equal(&saddr, &r->src.addr,
					       r->src.plen))
				goto again;
			flp6->saddr = saddr;
		}
		err = rt->dst.error;
		if (err != -EAGAIN)
			goto out;
	}
again:
	ip6_rt_put(rt);
	err = -EAGAIN;
	rt = NULL;
	goto out;

discard_pkt:
	dst_hold(&rt->dst);
out:
	arg->result = rt;
	return err;
}

static bool fib6_rule_suppress(struct fib_rule *rule, struct fib_lookup_arg *arg)
{
	struct rt6_info *rt = (struct rt6_info *) arg->result;
	struct net_device *dev = NULL;

	if (rt->rt6i_idev)
		dev = rt->rt6i_idev->dev;

	/* do not accept result if the route does
	 * not meet the required prefix length
	 */
	if (rt->rt6i_dst.plen <= rule->suppress_prefixlen)
		goto suppress_route;

	/* do not accept result if the route uses a device
	 * belonging to a forbidden interface group
	 */
	if (rule->suppress_ifgroup != -1 && dev && dev->group == rule->suppress_ifgroup)
		goto suppress_route;

	return false;

suppress_route:
	ip6_rt_put(rt);
	return true;
}

static int fib6_rule_match(struct fib_rule *rule, struct flowi *fl, int flags)
{
	struct fib6_rule *r = (struct fib6_rule *) rule;
	struct flowi6 *fl6 = &fl->u.ip6;

	if (r->dst.plen &&
	    !ipv6_prefix_equal(&fl6->daddr, &r->dst.addr, r->dst.plen))
		return 0;

	/*
	 * If FIB_RULE_FIND_SADDR is set and we do not have a
	 * source address for the traffic, we defer check for
	 * source address.
	 */
	if (r->src.plen) {
		if (flags & RT6_LOOKUP_F_HAS_SADDR) {
			if (!ipv6_prefix_equal(&fl6->saddr, &r->src.addr,
					       r->src.plen))
				return 0;
		} else if (!(r->common.flags & FIB_RULE_FIND_SADDR))
			return 0;
	}

	if (r->tclass && r->tclass != ip6_tclass(fl6->flowlabel))
		return 0;

	return 1;
}

static const struct nla_policy fib6_rule_policy[FRA_MAX+1] = {
	FRA_GENERIC_POLICY,
};

static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
			       struct fib_rule_hdr *frh,
			       struct nlattr **tb)
{
	int err = -EINVAL;
	struct net *net = sock_net(skb->sk);
	struct fib6_rule *rule6 = (struct fib6_rule *) rule;

	if (rule->action == FR_ACT_TO_TBL && !rule->l3mdev) {
		if (rule->table == RT6_TABLE_UNSPEC)
			goto errout;

		if (fib6_new_table(net, rule->table) == NULL) {
			err = -ENOBUFS;
			goto errout;
		}
	}

	if (frh->src_len)
		rule6->src.addr = nla_get_in6_addr(tb[FRA_SRC]);

	if (frh->dst_len)
		rule6->dst.addr = nla_get_in6_addr(tb[FRA_DST]);

	rule6->src.plen = frh->src_len;
	rule6->dst.plen = frh->dst_len;
	rule6->tclass = frh->tos;

	err = 0;
errout:
	return err;
}

static int fib6_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh,
			     struct nlattr **tb)
{
	struct fib6_rule *rule6 = (struct fib6_rule *) rule;

	if (frh->src_len && (rule6->src.plen != frh->src_len))
		return 0;

	if (frh->dst_len && (rule6->dst.plen != frh->dst_len))
		return 0;

	if (frh->tos && (rule6->tclass != frh->tos))
		return 0;

	if (frh->src_len &&
	    nla_memcmp(tb[FRA_SRC], &rule6->src.addr, sizeof(struct in6_addr)))
		return 0;

	if (frh->dst_len &&
	    nla_memcmp(tb[FRA_DST], &rule6->dst.addr, sizeof(struct in6_addr)))
		return 0;

	return 1;
}

static int fib6_rule_fill(struct fib_rule *rule, struct sk_buff *skb,
			  struct fib_rule_hdr *frh)
{
	struct fib6_rule *rule6 = (struct fib6_rule *) rule;

	frh->dst_len = rule6->dst.plen;
	frh->src_len = rule6->src.plen;
	frh->tos = rule6->tclass;

	if ((rule6->dst.plen &&
	     nla_put_in6_addr(skb, FRA_DST, &rule6->dst.addr)) ||
	    (rule6->src.plen &&
	     nla_put_in6_addr(skb, FRA_SRC, &rule6->src.addr)))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -ENOBUFS;
}

static size_t fib6_rule_nlmsg_payload(struct fib_rule *rule)
{
	return nla_total_size(16) /* dst */
	       + nla_total_size(16); /* src */
}

static const struct fib_rules_ops __net_initconst fib6_rules_ops_template = {
	.family			= AF_INET6,
	.rule_size		= sizeof(struct fib6_rule),
	.addr_size		= sizeof(struct in6_addr),
	.action			= fib6_rule_action,
	.match			= fib6_rule_match,
	.suppress		= fib6_rule_suppress,
	.configure		= fib6_rule_configure,
	.compare		= fib6_rule_compare,
	.fill			= fib6_rule_fill,
	.nlmsg_payload		= fib6_rule_nlmsg_payload,
	.nlgroup		= RTNLGRP_IPV6_RULE,
	.policy			= fib6_rule_policy,
	.owner			= THIS_MODULE,
	.fro_net		= &init_net,
};

static int __net_init fib6_rules_net_init(struct net *net)
{
	struct fib_rules_ops *ops;
	int err = -ENOMEM;

	ops = fib_rules_register(&fib6_rules_ops_template, net);
	if (IS_ERR(ops))
		return PTR_ERR(ops);

	err = fib_default_rule_add(ops, 0, RT6_TABLE_LOCAL, 0);
	if (err)
		goto out_fib6_rules_ops;

	err = fib_default_rule_add(ops, 0x7FFE, RT6_TABLE_MAIN, 0);
	if (err)
		goto out_fib6_rules_ops;

	net->ipv6.fib6_rules_ops = ops;
out:
	return err;

out_fib6_rules_ops:
	fib_rules_unregister(ops);
	goto out;
}

static void __net_exit fib6_rules_net_exit(struct net *net)
{
	rtnl_lock();
	fib_rules_unregister(net->ipv6.fib6_rules_ops);
	rtnl_unlock();
}

static struct pernet_operations fib6_rules_net_ops = {
	.init = fib6_rules_net_init,
	.exit = fib6_rules_net_exit,
};

int __init fib6_rules_init(void)
{
	return register_pernet_subsys(&fib6_rules_net_ops);
}


void fib6_rules_cleanup(void)
{
	unregister_pernet_subsys(&fib6_rules_net_ops);
}
Commit	Line	Data
101367c2 TG	1	/*
	2	* net/ipv6/fib6_rules.c IPv6 Routing Policy Rules
	3	*
	4	* Copyright (C)2003-2006 Helsinki University of Technology
	5	* Copyright (C)2003-2006 USAGI/WIDE Project
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License as
	9	* published by the Free Software Foundation, version 2.
	10	*
	11	* Authors
	12	* Thomas Graf <tgraf@suug.ch>
	13	* Ville Nuorvala <vnuorval@tcs.hut.fi>
	14	*/
	15
101367c2	16	#include <linux/netdevice.h>
dcb18f76	17	#include <linux/notifier.h>
bc3b2d7f	18	#include <linux/export.h>
101367c2 TG	19
	20	#include <net/fib_rules.h>
	21	#include <net/ipv6.h>
29f6af77	22	#include <net/addrconf.h>
101367c2 TG	23	#include <net/ip6_route.h>
	24	#include <net/netlink.h>
	25
911c8541	26	struct fib6_rule {
101367c2 TG	27	struct fib_rule common;
	28	struct rt6key src;
	29	struct rt6key dst;
	30	u8 tclass;
	31	};
	32
e3ea9731 IS	33	static bool fib6_rule_matchall(const struct fib_rule *rule)
	34	{
	35	struct fib6_rule *r = container_of(rule, struct fib6_rule, common);
	36
	37	if (r->dst.plen \|\| r->src.plen \|\| r->tclass)
	38	return false;
	39	return fib_rule_matchall(rule);
	40	}
	41
	42	bool fib6_rule_default(const struct fib_rule *rule)
	43	{
	44	if (!fib6_rule_matchall(rule) \|\| rule->action != FR_ACT_TO_TBL \|\|
	45	rule->l3mdev)
	46	return false;
	47	if (rule->table != RT6_TABLE_LOCAL && rule->table != RT6_TABLE_MAIN)
	48	return false;
	49	return true;
	50	}
	51	EXPORT_SYMBOL_GPL(fib6_rule_default);
	52
dcb18f76 IS	53	int fib6_rules_dump(struct net net, struct notifier_block nb)
	54	{
	55	return fib_rules_dump(net, nb, AF_INET6);
	56	}
	57
	58	unsigned int fib6_rules_seq_read(struct net *net)
	59	{
	60	return fib_rules_seq_read(net, AF_INET6);
	61	}
	62
4c9483b2	63	struct dst_entry fib6_rule_lookup(struct net net, struct flowi6 *fl6,
58f09b78	64	int flags, pol_lookup_t lookup)
101367c2 TG	65	{
	66	struct fib_lookup_arg arg = {
	67	.lookup_ptr = lookup,
2c1c0004	68	.flags = FIB_LOOKUP_NOREF,
101367c2 TG	69	};
101367c2 TG	70
9ee0034b DA	71	/* update flow if oif or iif point to device enslaved to l3mdev */
	72	l3mdev_update_flow(net, flowi6_to_flowi(fl6));
	73
4c9483b2 DM	74	fib_rules_lookup(net->ipv6.fib6_rules_ops,
4c9483b2 DM	75	flowi6_to_flowi(fl6), flags, &arg);
101367c2	76
07f61557 SP	77	if (arg.result)
07f61557 SP	78	return arg.result;
b1429553	79
07f61557 SP	80	dst_hold(&net->ipv6.ip6_null_entry->dst);
07f61557 SP	81	return &net->ipv6.ip6_null_entry->dst;
101367c2 TG	82	}
101367c2 TG	83
8ce11e6a AB	84	static int fib6_rule_action(struct fib_rule rule, struct flowi flp,
8ce11e6a AB	85	int flags, struct fib_lookup_arg *arg)
101367c2	86	{
4c9483b2	87	struct flowi6 *flp6 = &flp->u.ip6;
101367c2 TG	88	struct rt6_info *rt = NULL;
101367c2 TG	89	struct fib6_table *table;
8ed67789	90	struct net *net = rule->fr_net;
101367c2	91	pol_lookup_t lookup = arg->lookup_ptr;
46b3a421	92	int err = 0;
96c63fa7	93	u32 tb_id;
101367c2 TG	94
	95	switch (rule->action) {
	96	case FR_ACT_TO_TBL:
	97	break;
	98	case FR_ACT_UNREACHABLE:
46b3a421	99	err = -ENETUNREACH;
8ed67789	100	rt = net->ipv6.ip6_null_entry;
101367c2 TG	101	goto discard_pkt;
	102	default:
	103	case FR_ACT_BLACKHOLE:
46b3a421	104	err = -EINVAL;
8ed67789	105	rt = net->ipv6.ip6_blk_hole_entry;
101367c2 TG	106	goto discard_pkt;
101367c2 TG	107	case FR_ACT_PROHIBIT:
46b3a421	108	err = -EACCES;
8ed67789	109	rt = net->ipv6.ip6_prohibit_entry;
101367c2 TG	110	goto discard_pkt;
	111	}
	112
96c63fa7 DA	113	tb_id = fib_rule_get_table(rule, arg);
96c63fa7 DA	114	table = fib6_get_table(net, tb_id);
46b3a421 HFS	115	if (!table) {
	116	err = -EAGAIN;
	117	goto out;
	118	}
101367c2	119
46b3a421	120	rt = lookup(net, table, flp6, flags);
8ed67789	121	if (rt != net->ipv6.ip6_null_entry) {
29f6af77 YH	122	struct fib6_rule r = (struct fib6_rule )rule;
	123
	124	/*
	125	* If we need to find a source address for this traffic,
	126	* we check the result if it meets requirement of the rule.
	127	*/
	128	if ((rule->flags & FIB_RULE_FIND_SADDR) &&
	129	r->src.plen && !(flags & RT6_LOOKUP_F_HAS_SADDR)) {
	130	struct in6_addr saddr;
7cbca67c	131
191cd582	132	if (ipv6_dev_get_saddr(net,
d8d1f30b	133	ip6_dst_idev(&rt->dst)->dev,
4c9483b2	134	&flp6->daddr,
0c9a2ac1	135	rt6_flags2srcprefs(flags),
7cbca67c	136	&saddr))
29f6af77 YH	137	goto again;
	138	if (!ipv6_prefix_equal(&saddr, &r->src.addr,
	139	r->src.plen))
	140	goto again;
4e3fd7a0	141	flp6->saddr = saddr;
29f6af77	142	}
73ba57bf	143	err = rt->dst.error;
07f61557 SP	144	if (err != -EAGAIN)
07f61557 SP	145	goto out;
29f6af77 YH	146	}
29f6af77 YH	147	again:
94e187c0	148	ip6_rt_put(rt);
46b3a421	149	err = -EAGAIN;
3226f688 PM	150	rt = NULL;
	151	goto out;
	152
101367c2	153	discard_pkt:
d8d1f30b	154	dst_hold(&rt->dst);
101367c2 TG	155	out:
101367c2 TG	156	arg->result = rt;
46b3a421	157	return err;
101367c2 TG	158	}
101367c2 TG	159
7764a45a ST	160	static bool fib6_rule_suppress(struct fib_rule rule, struct fib_lookup_arg arg)
	161	{
	162	struct rt6_info rt = (struct rt6_info ) arg->result;
673498b8 ST	163	struct net_device *dev = NULL;
	164
	165	if (rt->rt6i_idev)
	166	dev = rt->rt6i_idev->dev;
	167
7764a45a ST	168	/* do not accept result if the route does
	169	* not meet the required prefix length
	170	*/
73f5698e	171	if (rt->rt6i_dst.plen <= rule->suppress_prefixlen)
6ef94cfa ST	172	goto suppress_route;
	173
	174	/* do not accept result if the route uses a device
	175	* belonging to a forbidden interface group
	176	*/
	177	if (rule->suppress_ifgroup != -1 && dev && dev->group == rule->suppress_ifgroup)
	178	goto suppress_route;
	179
	180	return false;
	181
	182	suppress_route:
04f0888d ST	183	ip6_rt_put(rt);
04f0888d ST	184	return true;
7764a45a	185	}
101367c2 TG	186
	187	static int fib6_rule_match(struct fib_rule rule, struct flowi fl, int flags)
	188	{
	189	struct fib6_rule r = (struct fib6_rule ) rule;
4c9483b2	190	struct flowi6 *fl6 = &fl->u.ip6;
101367c2	191
adaa70bb	192	if (r->dst.plen &&
4c9483b2	193	!ipv6_prefix_equal(&fl6->daddr, &r->dst.addr, r->dst.plen))
101367c2 TG	194	return 0;
101367c2 TG	195
29f6af77 YH	196	/*
	197	* If FIB_RULE_FIND_SADDR is set and we do not have a
	198	* source address for the traffic, we defer check for
	199	* source address.
	200	*/
adaa70bb	201	if (r->src.plen) {
29f6af77	202	if (flags & RT6_LOOKUP_F_HAS_SADDR) {
4c9483b2	203	if (!ipv6_prefix_equal(&fl6->saddr, &r->src.addr,
29f6af77 YH	204	r->src.plen))
	205	return 0;
	206	} else if (!(r->common.flags & FIB_RULE_FIND_SADDR))
adaa70bb TG	207	return 0;
adaa70bb TG	208	}
101367c2	209
d76ed22b	210	if (r->tclass && r->tclass != ip6_tclass(fl6->flowlabel))
2cc67cc7 YH	211	return 0;
2cc67cc7 YH	212
101367c2 TG	213	return 1;
	214	}
	215
ef7c79ed	216	static const struct nla_policy fib6_rule_policy[FRA_MAX+1] = {
1f6c9557	217	FRA_GENERIC_POLICY,
101367c2 TG	218	};
	219
	220	static int fib6_rule_configure(struct fib_rule rule, struct sk_buff skb,
8b3521ee	221	struct fib_rule_hdr *frh,
101367c2 TG	222	struct nlattr **tb)
	223	{
	224	int err = -EINVAL;
3b1e0a65	225	struct net *net = sock_net(skb->sk);
101367c2 TG	226	struct fib6_rule rule6 = (struct fib6_rule ) rule;
101367c2 TG	227
96c63fa7	228	if (rule->action == FR_ACT_TO_TBL && !rule->l3mdev) {
101367c2 TG	229	if (rule->table == RT6_TABLE_UNSPEC)
	230	goto errout;
	231
dcabb819	232	if (fib6_new_table(net, rule->table) == NULL) {
101367c2 TG	233	err = -ENOBUFS;
	234	goto errout;
	235	}
	236	}
	237
e1701c68	238	if (frh->src_len)
67b61f6c	239	rule6->src.addr = nla_get_in6_addr(tb[FRA_SRC]);
101367c2	240
e1701c68	241	if (frh->dst_len)
67b61f6c	242	rule6->dst.addr = nla_get_in6_addr(tb[FRA_DST]);
101367c2 TG	243
	244	rule6->src.plen = frh->src_len;
	245	rule6->dst.plen = frh->dst_len;
	246	rule6->tclass = frh->tos;
	247
	248	err = 0;
	249	errout:
	250	return err;
	251	}
	252
	253	static int fib6_rule_compare(struct fib_rule rule, struct fib_rule_hdr frh,
	254	struct nlattr **tb)
	255	{
	256	struct fib6_rule rule6 = (struct fib6_rule ) rule;
	257
	258	if (frh->src_len && (rule6->src.plen != frh->src_len))
	259	return 0;
	260
	261	if (frh->dst_len && (rule6->dst.plen != frh->dst_len))
	262	return 0;
	263
	264	if (frh->tos && (rule6->tclass != frh->tos))
	265	return 0;
	266
e1701c68	267	if (frh->src_len &&
101367c2 TG	268	nla_memcmp(tb[FRA_SRC], &rule6->src.addr, sizeof(struct in6_addr)))
	269	return 0;
	270
e1701c68	271	if (frh->dst_len &&
101367c2 TG	272	nla_memcmp(tb[FRA_DST], &rule6->dst.addr, sizeof(struct in6_addr)))
	273	return 0;
	274
	275	return 1;
	276	}
	277
	278	static int fib6_rule_fill(struct fib_rule rule, struct sk_buff skb,
04af8cf6	279	struct fib_rule_hdr *frh)
101367c2 TG	280	{
	281	struct fib6_rule rule6 = (struct fib6_rule ) rule;
	282
101367c2 TG	283	frh->dst_len = rule6->dst.plen;
	284	frh->src_len = rule6->src.plen;
	285	frh->tos = rule6->tclass;
	286
c78679e8	287	if ((rule6->dst.plen &&
930345ea	288	nla_put_in6_addr(skb, FRA_DST, &rule6->dst.addr)) \|\|
c78679e8	289	(rule6->src.plen &&
930345ea	290	nla_put_in6_addr(skb, FRA_SRC, &rule6->src.addr)))
c78679e8	291	goto nla_put_failure;
101367c2 TG	292	return 0;
	293
	294	nla_put_failure:
	295	return -ENOBUFS;
	296	}
	297
339bf98f TG	298	static size_t fib6_rule_nlmsg_payload(struct fib_rule *rule)
	299	{
	300	return nla_total_size(16) /* dst */
	301	+ nla_total_size(16); /* src */
	302	}
	303
04a6f82c	304	static const struct fib_rules_ops __net_initconst fib6_rules_ops_template = {
25239cee	305	.family = AF_INET6,
101367c2	306	.rule_size = sizeof(struct fib6_rule),
e1701c68	307	.addr_size = sizeof(struct in6_addr),
101367c2 TG	308	.action = fib6_rule_action,
101367c2 TG	309	.match = fib6_rule_match,
7764a45a	310	.suppress = fib6_rule_suppress,
101367c2 TG	311	.configure = fib6_rule_configure,
	312	.compare = fib6_rule_compare,
	313	.fill = fib6_rule_fill,
339bf98f	314	.nlmsg_payload = fib6_rule_nlmsg_payload,
101367c2 TG	315	.nlgroup = RTNLGRP_IPV6_RULE,
101367c2 TG	316	.policy = fib6_rule_policy,
101367c2	317	.owner = THIS_MODULE,
03592383	318	.fro_net = &init_net,
101367c2 TG	319	};
101367c2 TG	320
2c8c1e72	321	static int __net_init fib6_rules_net_init(struct net *net)
101367c2	322	{
e9c5158a	323	struct fib_rules_ops *ops;
dcabb819	324	int err = -ENOMEM;
2994c638	325
e9c5158a EB	326	ops = fib_rules_register(&fib6_rules_ops_template, net);
	327	if (IS_ERR(ops))
	328	return PTR_ERR(ops);
eb5564b8	329
85b99092	330	err = fib_default_rule_add(ops, 0, RT6_TABLE_LOCAL, 0);
dcabb819 DL	331	if (err)
dcabb819 DL	332	goto out_fib6_rules_ops;
9eb87f3f	333
85b99092	334	err = fib_default_rule_add(ops, 0x7FFE, RT6_TABLE_MAIN, 0);
dcabb819	335	if (err)
e9c5158a	336	goto out_fib6_rules_ops;
9eb87f3f	337
85b99092	338	net->ipv6.fib6_rules_ops = ops;
9eb87f3f	339	out:
dcabb819	340	return err;
9eb87f3f	341
dcabb819	342	out_fib6_rules_ops:
e9c5158a	343	fib_rules_unregister(ops);
9eb87f3f	344	goto out;
101367c2 TG	345	}
101367c2 TG	346
2c8c1e72	347	static void __net_exit fib6_rules_net_exit(struct net *net)
dcabb819	348	{
419df12f	349	rtnl_lock();
dcabb819	350	fib_rules_unregister(net->ipv6.fib6_rules_ops);
419df12f	351	rtnl_unlock();
dcabb819 DL	352	}
	353
	354	static struct pernet_operations fib6_rules_net_ops = {
	355	.init = fib6_rules_net_init,
	356	.exit = fib6_rules_net_exit,
	357	};
	358
	359	int __init fib6_rules_init(void)
	360	{
	361	return register_pernet_subsys(&fib6_rules_net_ops);
	362	}
	363
	364
101367c2 TG	365	void fib6_rules_cleanup(void)
101367c2 TG	366	{
ff4e1fb0	367	unregister_pernet_subsys(&fib6_rules_net_ops);
101367c2	368	}