[mirror_ubuntu-artful-kernel.git] / net / ipv6 / xfrm6_policy.c

/*
 * xfrm6_policy.c: based on xfrm4_policy.c
 *
 * Authors:
 *	Mitsuru KANDA @USAGI
 * 	Kazunori MIYAZAWA @USAGI
 * 	Kunihiro Ishiguro <kunihiro@ipinfusion.com>
 * 		IPv6 support
 * 	YOSHIFUJI Hideaki
 * 		Split up af-specific portion
 *
 */

#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <net/addrconf.h>
#include <net/dst.h>
#include <net/xfrm.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
#include <net/mip6.h>
#endif

static struct dst_ops xfrm6_dst_ops;
static struct xfrm_policy_afinfo xfrm6_policy_afinfo;

static struct dst_entry *xfrm6_dst_lookup(struct net *net, int tos,
					  xfrm_address_t *saddr,
					  xfrm_address_t *daddr)
{
	struct flowi fl = {};
	struct dst_entry *dst;
	int err;

	memcpy(&fl.fl6_dst, daddr, sizeof(fl.fl6_dst));
	if (saddr)
		memcpy(&fl.fl6_src, saddr, sizeof(fl.fl6_src));

	dst = ip6_route_output(net, NULL, &fl);

	err = dst->error;
	if (dst->error) {
		dst_release(dst);
		dst = ERR_PTR(err);
	}

	return dst;
}

static int xfrm6_get_saddr(xfrm_address_t *saddr, xfrm_address_t *daddr)
{
	struct dst_entry *dst;
	struct net_device *dev;

	dst = xfrm6_dst_lookup(&init_net, 0, NULL, daddr);
	if (IS_ERR(dst))
		return -EHOSTUNREACH;

	dev = ip6_dst_idev(dst)->dev;
	ipv6_dev_get_saddr(dev_net(dev), dev,
			   (struct in6_addr *)&daddr->a6, 0,
			   (struct in6_addr *)&saddr->a6);
	dst_release(dst);
	return 0;
}

static struct dst_entry *
__xfrm6_find_bundle(struct flowi *fl, struct xfrm_policy *policy)
{
	struct dst_entry *dst;

	/* Still not clear if we should set fl->fl6_{src,dst}... */
	read_lock_bh(&policy->lock);
	for (dst = policy->bundles; dst; dst = dst->next) {
		struct xfrm_dst *xdst = (struct xfrm_dst*)dst;
		struct in6_addr fl_dst_prefix, fl_src_prefix;

		ipv6_addr_prefix(&fl_dst_prefix,
				 &fl->fl6_dst,
				 xdst->u.rt6.rt6i_dst.plen);
		ipv6_addr_prefix(&fl_src_prefix,
				 &fl->fl6_src,
				 xdst->u.rt6.rt6i_src.plen);
		if (ipv6_addr_equal(&xdst->u.rt6.rt6i_dst.addr, &fl_dst_prefix) &&
		    ipv6_addr_equal(&xdst->u.rt6.rt6i_src.addr, &fl_src_prefix) &&
		    xfrm_bundle_ok(policy, xdst, fl, AF_INET6,
				   (xdst->u.rt6.rt6i_dst.plen != 128 ||
				    xdst->u.rt6.rt6i_src.plen != 128))) {
			dst_clone(dst);
			break;
		}
	}
	read_unlock_bh(&policy->lock);
	return dst;
}

static int xfrm6_get_tos(struct flowi *fl)
{
	return 0;
}

static int xfrm6_init_path(struct xfrm_dst *path, struct dst_entry *dst,
			   int nfheader_len)
{
	if (dst->ops->family == AF_INET6) {
		struct rt6_info *rt = (struct rt6_info*)dst;
		if (rt->rt6i_node)
			path->path_cookie = rt->rt6i_node->fn_sernum;
	}

	path->u.rt6.rt6i_nfheader_len = nfheader_len;

	return 0;
}

static int xfrm6_fill_dst(struct xfrm_dst *xdst, struct net_device *dev)
{
	struct rt6_info *rt = (struct rt6_info*)xdst->route;

	xdst->u.dst.dev = dev;
	dev_hold(dev);

	xdst->u.rt6.rt6i_idev = in6_dev_get(rt->u.dst.dev);
	if (!xdst->u.rt6.rt6i_idev)
		return -ENODEV;

	/* Sheit... I remember I did this right. Apparently,
	 * it was magically lost, so this code needs audit */
	xdst->u.rt6.rt6i_flags = rt->rt6i_flags & (RTF_ANYCAST |
						   RTF_LOCAL);
	xdst->u.rt6.rt6i_metric = rt->rt6i_metric;
	xdst->u.rt6.rt6i_node = rt->rt6i_node;
	if (rt->rt6i_node)
		xdst->route_cookie = rt->rt6i_node->fn_sernum;
	xdst->u.rt6.rt6i_gateway = rt->rt6i_gateway;
	xdst->u.rt6.rt6i_dst = rt->rt6i_dst;
	xdst->u.rt6.rt6i_src = rt->rt6i_src;

	return 0;
}

static inline void
_decode_session6(struct sk_buff *skb, struct flowi *fl, int reverse)
{
	int onlyproto = 0;
	u16 offset = skb_network_header_len(skb);
	struct ipv6hdr *hdr = ipv6_hdr(skb);
	struct ipv6_opt_hdr *exthdr;
	const unsigned char *nh = skb_network_header(skb);
	u8 nexthdr = nh[IP6CB(skb)->nhoff];

	memset(fl, 0, sizeof(struct flowi));
	ipv6_addr_copy(&fl->fl6_dst, reverse ? &hdr->saddr : &hdr->daddr);
	ipv6_addr_copy(&fl->fl6_src, reverse ? &hdr->daddr : &hdr->saddr);

	while (pskb_may_pull(skb, nh + offset + 1 - skb->data)) {
		nh = skb_network_header(skb);
		exthdr = (struct ipv6_opt_hdr *)(nh + offset);

		switch (nexthdr) {
		case NEXTHDR_FRAGMENT:
			onlyproto = 1;
		case NEXTHDR_ROUTING:
		case NEXTHDR_HOP:
		case NEXTHDR_DEST:
			offset += ipv6_optlen(exthdr);
			nexthdr = exthdr->nexthdr;
			exthdr = (struct ipv6_opt_hdr *)(nh + offset);
			break;

		case IPPROTO_UDP:
		case IPPROTO_UDPLITE:
		case IPPROTO_TCP:
		case IPPROTO_SCTP:
		case IPPROTO_DCCP:
			if (!onlyproto && pskb_may_pull(skb, nh + offset + 4 - skb->data)) {
				__be16 *ports = (__be16 *)exthdr;

				fl->fl_ip_sport = ports[!!reverse];
				fl->fl_ip_dport = ports[!reverse];
			}
			fl->proto = nexthdr;
			return;

		case IPPROTO_ICMPV6:
			if (!onlyproto && pskb_may_pull(skb, nh + offset + 2 - skb->data)) {
				u8 *icmp = (u8 *)exthdr;

				fl->fl_icmp_type = icmp[0];
				fl->fl_icmp_code = icmp[1];
			}
			fl->proto = nexthdr;
			return;

#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
		case IPPROTO_MH:
			if (!onlyproto && pskb_may_pull(skb, nh + offset + 3 - skb->data)) {
				struct ip6_mh *mh;
				mh = (struct ip6_mh *)exthdr;

				fl->fl_mh_type = mh->ip6mh_type;
			}
			fl->proto = nexthdr;
			return;
#endif

		/* XXX Why are there these headers? */
		case IPPROTO_AH:
		case IPPROTO_ESP:
		case IPPROTO_COMP:
		default:
			fl->fl_ipsec_spi = 0;
			fl->proto = nexthdr;
			return;
		}
	}
}

static inline int xfrm6_garbage_collect(struct dst_ops *ops)
{
	xfrm6_policy_afinfo.garbage_collect(&init_net);
	return (atomic_read(&xfrm6_dst_ops.entries) > xfrm6_dst_ops.gc_thresh*2);
}

static void xfrm6_update_pmtu(struct dst_entry *dst, u32 mtu)
{
	struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
	struct dst_entry *path = xdst->route;

	path->ops->update_pmtu(path, mtu);
}

static void xfrm6_dst_destroy(struct dst_entry *dst)
{
	struct xfrm_dst *xdst = (struct xfrm_dst *)dst;

	if (likely(xdst->u.rt6.rt6i_idev))
		in6_dev_put(xdst->u.rt6.rt6i_idev);
	xfrm_dst_destroy(xdst);
}

static void xfrm6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
			     int unregister)
{
	struct xfrm_dst *xdst;

	if (!unregister)
		return;

	xdst = (struct xfrm_dst *)dst;
	if (xdst->u.rt6.rt6i_idev->dev == dev) {
		struct inet6_dev *loopback_idev =
			in6_dev_get(dev_net(dev)->loopback_dev);
		BUG_ON(!loopback_idev);

		do {
			in6_dev_put(xdst->u.rt6.rt6i_idev);
			xdst->u.rt6.rt6i_idev = loopback_idev;
			in6_dev_hold(loopback_idev);
			xdst = (struct xfrm_dst *)xdst->u.dst.child;
		} while (xdst->u.dst.xfrm);

		__in6_dev_put(loopback_idev);
	}

	xfrm_dst_ifdown(dst, dev);
}

static struct dst_ops xfrm6_dst_ops = {
	.family =		AF_INET6,
	.protocol =		__constant_htons(ETH_P_IPV6),
	.gc =			xfrm6_garbage_collect,
	.update_pmtu =		xfrm6_update_pmtu,
	.destroy =		xfrm6_dst_destroy,
	.ifdown =		xfrm6_dst_ifdown,
	.local_out =		__ip6_local_out,
	.gc_thresh =		1024,
	.entries =		ATOMIC_INIT(0),
};

static struct xfrm_policy_afinfo xfrm6_policy_afinfo = {
	.family =		AF_INET6,
	.dst_ops =		&xfrm6_dst_ops,
	.dst_lookup =		xfrm6_dst_lookup,
	.get_saddr = 		xfrm6_get_saddr,
	.find_bundle =		__xfrm6_find_bundle,
	.decode_session =	_decode_session6,
	.get_tos =		xfrm6_get_tos,
	.init_path =		xfrm6_init_path,
	.fill_dst =		xfrm6_fill_dst,
};

static int __init xfrm6_policy_init(void)
{
	return xfrm_policy_register_afinfo(&xfrm6_policy_afinfo);
}

static void xfrm6_policy_fini(void)
{
	xfrm_policy_unregister_afinfo(&xfrm6_policy_afinfo);
}

int __init xfrm6_init(void)
{
	int ret;

	ret = xfrm6_policy_init();
	if (ret)
		goto out;

	ret = xfrm6_state_init();
	if (ret)
		goto out_policy;
out:
	return ret;
out_policy:
	xfrm6_policy_fini();
	goto out;
}

void xfrm6_fini(void)
{
	//xfrm6_input_fini();
	xfrm6_policy_fini();
	xfrm6_state_fini();
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* xfrm6_policy.c: based on xfrm4_policy.c
	3	*
	4	* Authors:
	5	* Mitsuru KANDA @USAGI
	6	* Kazunori MIYAZAWA @USAGI
	7	* Kunihiro Ishiguro <kunihiro@ipinfusion.com>
	8	* IPv6 support
	9	* YOSHIFUJI Hideaki
	10	* Split up af-specific portion
1ab1457c	11	*
1da177e4 LT	12	*/
1da177e4 LT	13
66cdb3ca HX	14	#include <linux/err.h>
66cdb3ca HX	15	#include <linux/kernel.h>
aabc9761 HX	16	#include <linux/netdevice.h>
aabc9761 HX	17	#include <net/addrconf.h>
45ff5a3f	18	#include <net/dst.h>
1da177e4 LT	19	#include <net/xfrm.h>
	20	#include <net/ip.h>
	21	#include <net/ipv6.h>
	22	#include <net/ip6_route.h>
59fbb3a6	23	#if defined(CONFIG_IPV6_MIP6) \|\| defined(CONFIG_IPV6_MIP6_MODULE)
2ce4272a MN	24	#include <net/mip6.h>
2ce4272a MN	25	#endif
1da177e4 LT	26
	27	static struct dst_ops xfrm6_dst_ops;
	28	static struct xfrm_policy_afinfo xfrm6_policy_afinfo;
	29
c5b3cf46 AD	30	static struct dst_entry xfrm6_dst_lookup(struct net net, int tos,
c5b3cf46 AD	31	xfrm_address_t *saddr,
66cdb3ca	32	xfrm_address_t *daddr)
1da177e4	33	{
66cdb3ca HX	34	struct flowi fl = {};
	35	struct dst_entry *dst;
	36	int err;
	37
	38	memcpy(&fl.fl6_dst, daddr, sizeof(fl.fl6_dst));
	39	if (saddr)
	40	memcpy(&fl.fl6_src, saddr, sizeof(fl.fl6_src));
	41
c5b3cf46	42	dst = ip6_route_output(net, NULL, &fl);
66cdb3ca HX	43
	44	err = dst->error;
	45	if (dst->error) {
4251320f	46	dst_release(dst);
66cdb3ca HX	47	dst = ERR_PTR(err);
	48	}
	49
	50	return dst;
1da177e4 LT	51	}
1da177e4 LT	52
a1e59abf PM	53	static int xfrm6_get_saddr(xfrm_address_t saddr, xfrm_address_t daddr)
a1e59abf PM	54	{
66cdb3ca	55	struct dst_entry *dst;
191cd582	56	struct net_device *dev;
66cdb3ca	57
c5b3cf46	58	dst = xfrm6_dst_lookup(&init_net, 0, NULL, daddr);
66cdb3ca HX	59	if (IS_ERR(dst))
	60	return -EHOSTUNREACH;
	61
191cd582 BH	62	dev = ip6_dst_idev(dst)->dev;
191cd582 BH	63	ipv6_dev_get_saddr(dev_net(dev), dev,
7cbca67c	64	(struct in6_addr *)&daddr->a6, 0,
5e5f3f0f	65	(struct in6_addr *)&saddr->a6);
66cdb3ca HX	66	dst_release(dst);
66cdb3ca HX	67	return 0;
a1e59abf PM	68	}
a1e59abf PM	69
1da177e4 LT	70	static struct dst_entry *
	71	__xfrm6_find_bundle(struct flowi fl, struct xfrm_policy policy)
	72	{
	73	struct dst_entry *dst;
	74
	75	/* Still not clear if we should set fl->fl6_{src,dst}... */
	76	read_lock_bh(&policy->lock);
	77	for (dst = policy->bundles; dst; dst = dst->next) {
	78	struct xfrm_dst xdst = (struct xfrm_dst)dst;
	79	struct in6_addr fl_dst_prefix, fl_src_prefix;
	80
	81	ipv6_addr_prefix(&fl_dst_prefix,
	82	&fl->fl6_dst,
	83	xdst->u.rt6.rt6i_dst.plen);
	84	ipv6_addr_prefix(&fl_src_prefix,
	85	&fl->fl6_src,
	86	xdst->u.rt6.rt6i_src.plen);
	87	if (ipv6_addr_equal(&xdst->u.rt6.rt6i_dst.addr, &fl_dst_prefix) &&
	88	ipv6_addr_equal(&xdst->u.rt6.rt6i_src.addr, &fl_src_prefix) &&
5b368e61	89	xfrm_bundle_ok(policy, xdst, fl, AF_INET6,
e53820de MN	90	(xdst->u.rt6.rt6i_dst.plen != 128 \|\|
e53820de MN	91	xdst->u.rt6.rt6i_src.plen != 128))) {
1da177e4 LT	92	dst_clone(dst);
	93	break;
	94	}
	95	}
	96	read_unlock_bh(&policy->lock);
	97	return dst;
	98	}
	99
25ee3286	100	static int xfrm6_get_tos(struct flowi *fl)
1da177e4	101	{
25ee3286 HX	102	return 0;
25ee3286 HX	103	}
1da177e4	104
a1b05140 MN	105	static int xfrm6_init_path(struct xfrm_dst path, struct dst_entry dst,
	106	int nfheader_len)
	107	{
	108	if (dst->ops->family == AF_INET6) {
	109	struct rt6_info rt = (struct rt6_info)dst;
	110	if (rt->rt6i_node)
	111	path->path_cookie = rt->rt6i_node->fn_sernum;
	112	}
	113
	114	path->u.rt6.rt6i_nfheader_len = nfheader_len;
	115
	116	return 0;
	117	}
	118
25ee3286 HX	119	static int xfrm6_fill_dst(struct xfrm_dst xdst, struct net_device dev)
	120	{
	121	struct rt6_info rt = (struct rt6_info)xdst->route;
1da177e4	122
25ee3286 HX	123	xdst->u.dst.dev = dev;
25ee3286 HX	124	dev_hold(dev);
1da177e4	125
25ee3286 HX	126	xdst->u.rt6.rt6i_idev = in6_dev_get(rt->u.dst.dev);
	127	if (!xdst->u.rt6.rt6i_idev)
	128	return -ENODEV;
1da177e4	129
25ee3286 HX	130	/* Sheit... I remember I did this right. Apparently,
	131	* it was magically lost, so this code needs audit */
	132	xdst->u.rt6.rt6i_flags = rt->rt6i_flags & (RTF_ANYCAST \|
	133	RTF_LOCAL);
	134	xdst->u.rt6.rt6i_metric = rt->rt6i_metric;
	135	xdst->u.rt6.rt6i_node = rt->rt6i_node;
a1b05140 MN	136	if (rt->rt6i_node)
a1b05140 MN	137	xdst->route_cookie = rt->rt6i_node->fn_sernum;
25ee3286 HX	138	xdst->u.rt6.rt6i_gateway = rt->rt6i_gateway;
	139	xdst->u.rt6.rt6i_dst = rt->rt6i_dst;
	140	xdst->u.rt6.rt6i_src = rt->rt6i_src;
1da177e4	141
1da177e4	142	return 0;
1da177e4 LT	143	}
	144
	145	static inline void
d5422efe	146	_decode_session6(struct sk_buff skb, struct flowi fl, int reverse)
1da177e4	147	{
7e3a42a1	148	int onlyproto = 0;
cfe1fc77	149	u16 offset = skb_network_header_len(skb);
0660e03f	150	struct ipv6hdr *hdr = ipv6_hdr(skb);
e3cae904	151	struct ipv6_opt_hdr *exthdr;
d56f90a7 ACM	152	const unsigned char *nh = skb_network_header(skb);
d56f90a7 ACM	153	u8 nexthdr = nh[IP6CB(skb)->nhoff];
1da177e4 LT	154
1da177e4 LT	155	memset(fl, 0, sizeof(struct flowi));
d5422efe HX	156	ipv6_addr_copy(&fl->fl6_dst, reverse ? &hdr->saddr : &hdr->daddr);
d5422efe HX	157	ipv6_addr_copy(&fl->fl6_src, reverse ? &hdr->daddr : &hdr->saddr);
1da177e4	158
d56f90a7 ACM	159	while (pskb_may_pull(skb, nh + offset + 1 - skb->data)) {
	160	nh = skb_network_header(skb);
	161	exthdr = (struct ipv6_opt_hdr *)(nh + offset);
e3cae904	162
1da177e4	163	switch (nexthdr) {
7e3a42a1 ND	164	case NEXTHDR_FRAGMENT:
7e3a42a1 ND	165	onlyproto = 1;
1da177e4 LT	166	case NEXTHDR_ROUTING:
	167	case NEXTHDR_HOP:
	168	case NEXTHDR_DEST:
	169	offset += ipv6_optlen(exthdr);
	170	nexthdr = exthdr->nexthdr;
d56f90a7	171	exthdr = (struct ipv6_opt_hdr *)(nh + offset);
1da177e4 LT	172	break;
	173
	174	case IPPROTO_UDP:
ba4e58ec	175	case IPPROTO_UDPLITE:
1da177e4 LT	176	case IPPROTO_TCP:
1da177e4 LT	177	case IPPROTO_SCTP:
9e999993	178	case IPPROTO_DCCP:
7e3a42a1	179	if (!onlyproto && pskb_may_pull(skb, nh + offset + 4 - skb->data)) {
8c689a6e	180	__be16 ports = (__be16 )exthdr;
1da177e4	181
d5422efe HX	182	fl->fl_ip_sport = ports[!!reverse];
d5422efe HX	183	fl->fl_ip_dport = ports[!reverse];
1da177e4 LT	184	}
	185	fl->proto = nexthdr;
	186	return;
	187
	188	case IPPROTO_ICMPV6:
7e3a42a1	189	if (!onlyproto && pskb_may_pull(skb, nh + offset + 2 - skb->data)) {
1da177e4 LT	190	u8 icmp = (u8 )exthdr;
	191
	192	fl->fl_icmp_type = icmp[0];
	193	fl->fl_icmp_code = icmp[1];
	194	}
	195	fl->proto = nexthdr;
	196	return;
	197
59fbb3a6	198	#if defined(CONFIG_IPV6_MIP6) \|\| defined(CONFIG_IPV6_MIP6_MODULE)
2ce4272a	199	case IPPROTO_MH:
7e3a42a1	200	if (!onlyproto && pskb_may_pull(skb, nh + offset + 3 - skb->data)) {
2ce4272a MN	201	struct ip6_mh *mh;
	202	mh = (struct ip6_mh *)exthdr;
	203
	204	fl->fl_mh_type = mh->ip6mh_type;
	205	}
	206	fl->proto = nexthdr;
	207	return;
	208	#endif
	209
1da177e4 LT	210	/* XXX Why are there these headers? */
	211	case IPPROTO_AH:
	212	case IPPROTO_ESP:
	213	case IPPROTO_COMP:
	214	default:
	215	fl->fl_ipsec_spi = 0;
	216	fl->proto = nexthdr;
	217	return;
3ff50b79	218	}
1da177e4 LT	219	}
	220	}
	221
569d3645	222	static inline int xfrm6_garbage_collect(struct dst_ops *ops)
1da177e4	223	{
ddcfd796	224	xfrm6_policy_afinfo.garbage_collect(&init_net);
1da177e4 LT	225	return (atomic_read(&xfrm6_dst_ops.entries) > xfrm6_dst_ops.gc_thresh*2);
	226	}
	227
	228	static void xfrm6_update_pmtu(struct dst_entry *dst, u32 mtu)
	229	{
	230	struct xfrm_dst xdst = (struct xfrm_dst )dst;
	231	struct dst_entry *path = xdst->route;
	232
	233	path->ops->update_pmtu(path, mtu);
	234	}
	235
aabc9761 HX	236	static void xfrm6_dst_destroy(struct dst_entry *dst)
	237	{
	238	struct xfrm_dst xdst = (struct xfrm_dst )dst;
	239
	240	if (likely(xdst->u.rt6.rt6i_idev))
	241	in6_dev_put(xdst->u.rt6.rt6i_idev);
	242	xfrm_dst_destroy(xdst);
	243	}
	244
	245	static void xfrm6_dst_ifdown(struct dst_entry dst, struct net_device dev,
	246	int unregister)
	247	{
	248	struct xfrm_dst *xdst;
	249
	250	if (!unregister)
	251	return;
	252
	253	xdst = (struct xfrm_dst *)dst;
	254	if (xdst->u.rt6.rt6i_idev->dev == dev) {
5a3e55d6	255	struct inet6_dev *loopback_idev =
c346dca1	256	in6_dev_get(dev_net(dev)->loopback_dev);
aabc9761 HX	257	BUG_ON(!loopback_idev);
	258
	259	do {
	260	in6_dev_put(xdst->u.rt6.rt6i_idev);
	261	xdst->u.rt6.rt6i_idev = loopback_idev;
	262	in6_dev_hold(loopback_idev);
	263	xdst = (struct xfrm_dst *)xdst->u.dst.child;
	264	} while (xdst->u.dst.xfrm);
	265
	266	__in6_dev_put(loopback_idev);
	267	}
	268
	269	xfrm_dst_ifdown(dst, dev);
	270	}
	271
1da177e4 LT	272	static struct dst_ops xfrm6_dst_ops = {
	273	.family = AF_INET6,
	274	.protocol = __constant_htons(ETH_P_IPV6),
	275	.gc = xfrm6_garbage_collect,
	276	.update_pmtu = xfrm6_update_pmtu,
aabc9761 HX	277	.destroy = xfrm6_dst_destroy,
aabc9761 HX	278	.ifdown = xfrm6_dst_ifdown,
862b82c6	279	.local_out = __ip6_local_out,
1da177e4	280	.gc_thresh = 1024,
e2422970	281	.entries = ATOMIC_INIT(0),
1da177e4 LT	282	};
	283
	284	static struct xfrm_policy_afinfo xfrm6_policy_afinfo = {
	285	.family = AF_INET6,
1da177e4 LT	286	.dst_ops = &xfrm6_dst_ops,
1da177e4 LT	287	.dst_lookup = xfrm6_dst_lookup,
a1e59abf	288	.get_saddr = xfrm6_get_saddr,
1da177e4	289	.find_bundle = __xfrm6_find_bundle,
1da177e4	290	.decode_session = _decode_session6,
25ee3286	291	.get_tos = xfrm6_get_tos,
a1b05140	292	.init_path = xfrm6_init_path,
25ee3286	293	.fill_dst = xfrm6_fill_dst,
1da177e4 LT	294	};
1da177e4 LT	295
0013caba	296	static int __init xfrm6_policy_init(void)
1da177e4	297	{
0013caba	298	return xfrm_policy_register_afinfo(&xfrm6_policy_afinfo);
1da177e4 LT	299	}
	300
	301	static void xfrm6_policy_fini(void)
	302	{
	303	xfrm_policy_unregister_afinfo(&xfrm6_policy_afinfo);
	304	}
	305
0013caba	306	int __init xfrm6_init(void)
1da177e4	307	{
0013caba DL	308	int ret;
	309
	310	ret = xfrm6_policy_init();
	311	if (ret)
	312	goto out;
	313
	314	ret = xfrm6_state_init();
	315	if (ret)
	316	goto out_policy;
	317	out:
	318	return ret;
	319	out_policy:
	320	xfrm6_policy_fini();
	321	goto out;
1da177e4 LT	322	}
	323
	324	void xfrm6_fini(void)
	325	{
	326	//xfrm6_input_fini();
	327	xfrm6_policy_fini();
	328	xfrm6_state_fini();
	329	}