[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / ipv6 / inet6_hashtables.c

/*
 * INET		An implementation of the TCP/IP protocol suite for the LINUX
 *		operating system.  INET is implemented using the BSD Socket
 *		interface as the means of communication with the user level.
 *
 *		Generic INET6 transport hashtables
 *
 * Authors:	Lotsa people, from code originally in tcp, generalised here
 * 		by Arnaldo Carvalho de Melo <acme@mandriva.com>
 *
 *	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; either version
 *      2 of the License, or (at your option) any later version.
 */

#include <linux/module.h>
#include <linux/random.h>

#include <net/inet_connection_sock.h>
#include <net/inet_hashtables.h>
#include <net/inet6_hashtables.h>
#include <net/ip.h>

void __inet6_hash(struct inet_hashinfo *hashinfo,
				struct sock *sk)
{
	struct hlist_head *list;
	rwlock_t *lock;

	BUG_TRAP(sk_unhashed(sk));

	if (sk->sk_state == TCP_LISTEN) {
		list = &hashinfo->listening_hash[inet_sk_listen_hashfn(sk)];
		lock = &hashinfo->lhash_lock;
		inet_listen_wlock(hashinfo);
	} else {
		unsigned int hash;
		sk->sk_hash = hash = inet6_sk_ehashfn(sk);
		hash &= (hashinfo->ehash_size - 1);
		list = &hashinfo->ehash[hash].chain;
		lock = &hashinfo->ehash[hash].lock;
		write_lock(lock);
	}

	__sk_add_node(sk, list);
	sock_prot_inc_use(sk->sk_prot);
	write_unlock(lock);
}
EXPORT_SYMBOL(__inet6_hash);

/*
 * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so
 * we need not check it for TCP lookups anymore, thanks Alexey. -DaveM
 *
 * The sockhash lock must be held as a reader here.
 */
struct sock *__inet6_lookup_established(struct inet_hashinfo *hashinfo,
					   const struct in6_addr *saddr,
					   const u16 sport,
					   const struct in6_addr *daddr,
					   const u16 hnum,
					   const int dif)
{
	struct sock *sk;
	const struct hlist_node *node;
	const __u32 ports = INET_COMBINED_PORTS(sport, hnum);
	/* Optimize here for direct hit, only listening connections can
	 * have wildcards anyways.
	 */
	unsigned int hash = inet6_ehashfn(daddr, hnum, saddr, sport);
	struct inet_ehash_bucket *head = inet_ehash_bucket(hashinfo, hash);

	prefetch(head->chain.first);
	read_lock(&head->lock);
	sk_for_each(sk, node, &head->chain) {
		/* For IPV6 do the cheaper port and family tests first. */
		if (INET6_MATCH(sk, hash, saddr, daddr, ports, dif))
			goto hit; /* You sunk my battleship! */
	}
	/* Must check for a TIME_WAIT'er before going to listener hash. */
	sk_for_each(sk, node, &(head + hashinfo->ehash_size)->chain) {
		const struct inet_timewait_sock *tw = inet_twsk(sk);

		if(*((__u32 *)&(tw->tw_dport))	== ports	&&
		   sk->sk_family		== PF_INET6) {
			const struct inet6_timewait_sock *tw6 = inet6_twsk(sk);

			if (ipv6_addr_equal(&tw6->tw_v6_daddr, saddr)	&&
			    ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr)	&&
			    (!sk->sk_bound_dev_if || sk->sk_bound_dev_if == dif))
				goto hit;
		}
	}
	read_unlock(&head->lock);
	return NULL;

hit:
	sock_hold(sk);
	read_unlock(&head->lock);
	return sk;
}
EXPORT_SYMBOL(__inet6_lookup_established);

struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo,
				   const struct in6_addr *daddr,
				   const unsigned short hnum, const int dif)
{
	struct sock *sk;
	const struct hlist_node *node;
	struct sock *result = NULL;
	int score, hiscore = 0;

	read_lock(&hashinfo->lhash_lock);
	sk_for_each(sk, node, &hashinfo->listening_hash[inet_lhashfn(hnum)]) {
		if (inet_sk(sk)->num == hnum && sk->sk_family == PF_INET6) {
			const struct ipv6_pinfo *np = inet6_sk(sk);
			
			score = 1;
			if (!ipv6_addr_any(&np->rcv_saddr)) {
				if (!ipv6_addr_equal(&np->rcv_saddr, daddr))
					continue;
				score++;
			}
			if (sk->sk_bound_dev_if) {
				if (sk->sk_bound_dev_if != dif)
					continue;
				score++;
			}
			if (score == 3) {
				result = sk;
				break;
			}
			if (score > hiscore) {
				hiscore = score;
				result = sk;
			}
		}
	}
	if (result)
		sock_hold(result);
	read_unlock(&hashinfo->lhash_lock);
	return result;
}

EXPORT_SYMBOL_GPL(inet6_lookup_listener);

struct sock *inet6_lookup(struct inet_hashinfo *hashinfo,
			  const struct in6_addr *saddr, const u16 sport,
			  const struct in6_addr *daddr, const u16 dport,
			  const int dif)
{
	struct sock *sk;

	local_bh_disable();
	sk = __inet6_lookup(hashinfo, saddr, sport, daddr, ntohs(dport), dif);
	local_bh_enable();

	return sk;
}

EXPORT_SYMBOL_GPL(inet6_lookup);

static int __inet6_check_established(struct inet_timewait_death_row *death_row,
				     struct sock *sk, const __u16 lport,
				     struct inet_timewait_sock **twp)
{
	struct inet_hashinfo *hinfo = death_row->hashinfo;
	struct inet_sock *inet = inet_sk(sk);
	const struct ipv6_pinfo *np = inet6_sk(sk);
	const struct in6_addr *daddr = &np->rcv_saddr;
	const struct in6_addr *saddr = &np->daddr;
	const int dif = sk->sk_bound_dev_if;
	const u32 ports = INET_COMBINED_PORTS(inet->dport, lport);
	const unsigned int hash = inet6_ehashfn(daddr, inet->num, saddr,
						inet->dport);
	struct inet_ehash_bucket *head = inet_ehash_bucket(hinfo, hash);
	struct sock *sk2;
	const struct hlist_node *node;
	struct inet_timewait_sock *tw;

	prefetch(head->chain.first);
	write_lock(&head->lock);

	/* Check TIME-WAIT sockets first. */
	sk_for_each(sk2, node, &(head + hinfo->ehash_size)->chain) {
		const struct inet6_timewait_sock *tw6 = inet6_twsk(sk2);

		tw = inet_twsk(sk2);

		if(*((__u32 *)&(tw->tw_dport)) == ports		 &&
		   sk2->sk_family	       == PF_INET6	 &&
		   ipv6_addr_equal(&tw6->tw_v6_daddr, saddr)	 &&
		   ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr) &&
		   sk2->sk_bound_dev_if == sk->sk_bound_dev_if) {
			if (twsk_unique(sk, sk2, twp))
				goto unique;
			else
				goto not_unique;
		}
	}
	tw = NULL;

	/* And established part... */
	sk_for_each(sk2, node, &head->chain) {
		if (INET6_MATCH(sk2, hash, saddr, daddr, ports, dif))
			goto not_unique;
	}

unique:
	/* Must record num and sport now. Otherwise we will see
	 * in hash table socket with a funny identity. */
	inet->num = lport;
	inet->sport = htons(lport);
	BUG_TRAP(sk_unhashed(sk));
	__sk_add_node(sk, &head->chain);
	sk->sk_hash = hash;
	sock_prot_inc_use(sk->sk_prot);
	write_unlock(&head->lock);

	if (twp != NULL) {
		*twp = tw;
		NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
	} else if (tw != NULL) {
		/* Silly. Should hash-dance instead... */
		inet_twsk_deschedule(tw, death_row);
		NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);

		inet_twsk_put(tw);
	}
	return 0;

not_unique:
	write_unlock(&head->lock);
	return -EADDRNOTAVAIL;
}

static inline u32 inet6_sk_port_offset(const struct sock *sk)
{
	const struct inet_sock *inet = inet_sk(sk);
	const struct ipv6_pinfo *np = inet6_sk(sk);
	return secure_ipv6_port_ephemeral(np->rcv_saddr.s6_addr32,
					  np->daddr.s6_addr32,
					  inet->dport);
}

int inet6_hash_connect(struct inet_timewait_death_row *death_row,
		       struct sock *sk)
{
	struct inet_hashinfo *hinfo = death_row->hashinfo;
	const unsigned short snum = inet_sk(sk)->num;
 	struct inet_bind_hashbucket *head;
 	struct inet_bind_bucket *tb;
	int ret;

 	if (snum == 0) {
 		const int low = sysctl_local_port_range[0];
 		const int high = sysctl_local_port_range[1];
		const int range = high - low;
 		int i, port;
		static u32 hint;
		const u32 offset = hint + inet6_sk_port_offset(sk);
		struct hlist_node *node;
 		struct inet_timewait_sock *tw = NULL;

 		local_bh_disable();
		for (i = 1; i <= range; i++) {
			port = low + (i + offset) % range;
 			head = &hinfo->bhash[inet_bhashfn(port, hinfo->bhash_size)];
 			spin_lock(&head->lock);

 			/* Does not bother with rcv_saddr checks,
 			 * because the established check is already
 			 * unique enough.
 			 */
			inet_bind_bucket_for_each(tb, node, &head->chain) {
 				if (tb->port == port) {
 					BUG_TRAP(!hlist_empty(&tb->owners));
 					if (tb->fastreuse >= 0)
 						goto next_port;
 					if (!__inet6_check_established(death_row,
								       sk, port,
								       &tw))
 						goto ok;
 					goto next_port;
 				}
 			}

 			tb = inet_bind_bucket_create(hinfo->bind_bucket_cachep,
						     head, port);
 			if (!tb) {
 				spin_unlock(&head->lock);
 				break;
 			}
 			tb->fastreuse = -1;
 			goto ok;

 		next_port:
 			spin_unlock(&head->lock);
 		}
 		local_bh_enable();

 		return -EADDRNOTAVAIL;

ok:
		hint += i;

 		/* Head lock still held and bh's disabled */
 		inet_bind_hash(sk, tb, port);
		if (sk_unhashed(sk)) {
 			inet_sk(sk)->sport = htons(port);
 			__inet6_hash(hinfo, sk);
 		}
 		spin_unlock(&head->lock);

 		if (tw) {
 			inet_twsk_deschedule(tw, death_row);
 			inet_twsk_put(tw);
 		}

		ret = 0;
		goto out;
 	}

 	head = &hinfo->bhash[inet_bhashfn(snum, hinfo->bhash_size)];
 	tb   = inet_csk(sk)->icsk_bind_hash;
	spin_lock_bh(&head->lock);

	if (sk_head(&tb->owners) == sk && sk->sk_bind_node.next == NULL) {
		__inet6_hash(hinfo, sk);
		spin_unlock_bh(&head->lock);
		return 0;
	} else {
		spin_unlock(&head->lock);
		/* No definite answer... Walk to established hash table */
		ret = __inet6_check_established(death_row, sk, snum, NULL);
out:
		local_bh_enable();
		return ret;
	}
}

EXPORT_SYMBOL_GPL(inet6_hash_connect);
Commit	Line	Data
5324a040 ACM	1	/*
	2	* INET An implementation of the TCP/IP protocol suite for the LINUX
	3	* operating system. INET is implemented using the BSD Socket
	4	* interface as the means of communication with the user level.
	5	*
	6	* Generic INET6 transport hashtables
	7	*
d8313f5c ACM	8	* Authors: Lotsa people, from code originally in tcp, generalised here
d8313f5c ACM	9	* by Arnaldo Carvalho de Melo <acme@mandriva.com>
5324a040 ACM	10	*
	11	* This program is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU General Public License
	13	* as published by the Free Software Foundation; either version
	14	* 2 of the License, or (at your option) any later version.
	15	*/
	16
5324a040	17	#include <linux/module.h>
d8313f5c	18	#include <linux/random.h>
5324a040 ACM	19
	20	#include <net/inet_connection_sock.h>
	21	#include <net/inet_hashtables.h>
	22	#include <net/inet6_hashtables.h>
d8313f5c	23	#include <net/ip.h>
5324a040	24
b1a7ffcb DV	25	void __inet6_hash(struct inet_hashinfo *hashinfo,
	26	struct sock *sk)
	27	{
	28	struct hlist_head *list;
	29	rwlock_t *lock;
	30
	31	BUG_TRAP(sk_unhashed(sk));
	32
	33	if (sk->sk_state == TCP_LISTEN) {
	34	list = &hashinfo->listening_hash[inet_sk_listen_hashfn(sk)];
	35	lock = &hashinfo->lhash_lock;
	36	inet_listen_wlock(hashinfo);
	37	} else {
	38	unsigned int hash;
	39	sk->sk_hash = hash = inet6_sk_ehashfn(sk);
	40	hash &= (hashinfo->ehash_size - 1);
	41	list = &hashinfo->ehash[hash].chain;
	42	lock = &hashinfo->ehash[hash].lock;
	43	write_lock(lock);
	44	}
	45
	46	__sk_add_node(sk, list);
	47	sock_prot_inc_use(sk->sk_prot);
	48	write_unlock(lock);
	49	}
	50	EXPORT_SYMBOL(__inet6_hash);
	51
	52	/*
	53	* Sockets in TCP_CLOSE state are _always_ taken out of the hash, so
	54	* we need not check it for TCP lookups anymore, thanks Alexey. -DaveM
	55	*
	56	* The sockhash lock must be held as a reader here.
	57	*/
	58	struct sock __inet6_lookup_established(struct inet_hashinfo hashinfo,
	59	const struct in6_addr *saddr,
	60	const u16 sport,
	61	const struct in6_addr *daddr,
	62	const u16 hnum,
	63	const int dif)
	64	{
	65	struct sock *sk;
	66	const struct hlist_node *node;
	67	const __u32 ports = INET_COMBINED_PORTS(sport, hnum);
	68	/* Optimize here for direct hit, only listening connections can
	69	* have wildcards anyways.
	70	*/
	71	unsigned int hash = inet6_ehashfn(daddr, hnum, saddr, sport);
	72	struct inet_ehash_bucket *head = inet_ehash_bucket(hashinfo, hash);
	73
	74	prefetch(head->chain.first);
	75	read_lock(&head->lock);
	76	sk_for_each(sk, node, &head->chain) {
	77	/* For IPV6 do the cheaper port and family tests first. */
	78	if (INET6_MATCH(sk, hash, saddr, daddr, ports, dif))
	79	goto hit; /* You sunk my battleship! */
	80	}
	81	/* Must check for a TIME_WAIT'er before going to listener hash. */
	82	sk_for_each(sk, node, &(head + hashinfo->ehash_size)->chain) {
	83	const struct inet_timewait_sock *tw = inet_twsk(sk);
	84
	85	if(((__u32 )&(tw->tw_dport)) == ports &&
	86	sk->sk_family == PF_INET6) {
	87	const struct inet6_timewait_sock *tw6 = inet6_twsk(sk);
	88
89	if (ipv6_addr_equal(&tw6->tw_v6_daddr, saddr) &&
90	ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr) &&
91	(!sk->sk_bound_dev_if \|\| sk->sk_bound_dev_if == dif))
92	goto hit;
93	}
94	}
95	read_unlock(&head->lock);
96	return NULL;
97
98	hit:
99	sock_hold(sk);
100	read_unlock(&head->lock);
101	return sk;
102	}
103	EXPORT_SYMBOL(__inet6_lookup_established);
104
5324a040 ACM	105	struct sock inet6_lookup_listener(struct inet_hashinfo hashinfo,
	106	const struct in6_addr *daddr,
	107	const unsigned short hnum, const int dif)
	108	{
	109	struct sock *sk;
	110	const struct hlist_node *node;
	111	struct sock *result = NULL;
	112	int score, hiscore = 0;
	113
	114	read_lock(&hashinfo->lhash_lock);
	115	sk_for_each(sk, node, &hashinfo->listening_hash[inet_lhashfn(hnum)]) {
	116	if (inet_sk(sk)->num == hnum && sk->sk_family == PF_INET6) {
	117	const struct ipv6_pinfo *np = inet6_sk(sk);
	118
	119	score = 1;
	120	if (!ipv6_addr_any(&np->rcv_saddr)) {
	121	if (!ipv6_addr_equal(&np->rcv_saddr, daddr))
	122	continue;
	123	score++;
	124	}
	125	if (sk->sk_bound_dev_if) {
	126	if (sk->sk_bound_dev_if != dif)
	127	continue;
	128	score++;
	129	}
	130	if (score == 3) {
	131	result = sk;
	132	break;
	133	}
	134	if (score > hiscore) {
	135	hiscore = score;
	136	result = sk;
	137	}
	138	}
	139	}
	140	if (result)
	141	sock_hold(result);
	142	read_unlock(&hashinfo->lhash_lock);
	143	return result;
	144	}
	145
	146	EXPORT_SYMBOL_GPL(inet6_lookup_listener);
	147
	148	struct sock inet6_lookup(struct inet_hashinfo hashinfo,
	149	const struct in6_addr *saddr, const u16 sport,
	150	const struct in6_addr *daddr, const u16 dport,
	151	const int dif)
	152	{
	153	struct sock *sk;
	154
	155	local_bh_disable();
	156	sk = __inet6_lookup(hashinfo, saddr, sport, daddr, ntohs(dport), dif);
	157	local_bh_enable();
	158
	159	return sk;
	160	}
	161
	162	EXPORT_SYMBOL_GPL(inet6_lookup);
d8313f5c ACM	163
	164	static int __inet6_check_established(struct inet_timewait_death_row *death_row,
	165	struct sock *sk, const __u16 lport,
	166	struct inet_timewait_sock **twp)
	167	{
	168	struct inet_hashinfo *hinfo = death_row->hashinfo;
3759fa9c	169	struct inet_sock *inet = inet_sk(sk);
d8313f5c ACM	170	const struct ipv6_pinfo *np = inet6_sk(sk);
	171	const struct in6_addr *daddr = &np->rcv_saddr;
	172	const struct in6_addr *saddr = &np->daddr;
	173	const int dif = sk->sk_bound_dev_if;
	174	const u32 ports = INET_COMBINED_PORTS(inet->dport, lport);
	175	const unsigned int hash = inet6_ehashfn(daddr, inet->num, saddr,
	176	inet->dport);
	177	struct inet_ehash_bucket *head = inet_ehash_bucket(hinfo, hash);
	178	struct sock *sk2;
	179	const struct hlist_node *node;
	180	struct inet_timewait_sock *tw;
	181
	182	prefetch(head->chain.first);
	183	write_lock(&head->lock);
	184
	185	/* Check TIME-WAIT sockets first. */
	186	sk_for_each(sk2, node, &(head + hinfo->ehash_size)->chain) {
	187	const struct inet6_timewait_sock *tw6 = inet6_twsk(sk2);
	188
	189	tw = inet_twsk(sk2);
	190
	191	if(((__u32 )&(tw->tw_dport)) == ports &&
	192	sk2->sk_family == PF_INET6 &&
	193	ipv6_addr_equal(&tw6->tw_v6_daddr, saddr) &&
	194	ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr) &&
	195	sk2->sk_bound_dev_if == sk->sk_bound_dev_if) {
	196	if (twsk_unique(sk, sk2, twp))
	197	goto unique;
	198	else
	199	goto not_unique;
	200	}
	201	}
	202	tw = NULL;
	203
	204	/* And established part... */
	205	sk_for_each(sk2, node, &head->chain) {
	206	if (INET6_MATCH(sk2, hash, saddr, daddr, ports, dif))
	207	goto not_unique;
	208	}
	209
	210	unique:
3759fa9c HX	211	/* Must record num and sport now. Otherwise we will see
	212	* in hash table socket with a funny identity. */
	213	inet->num = lport;
	214	inet->sport = htons(lport);
d8313f5c ACM	215	BUG_TRAP(sk_unhashed(sk));
	216	__sk_add_node(sk, &head->chain);
	217	sk->sk_hash = hash;
	218	sock_prot_inc_use(sk->sk_prot);
	219	write_unlock(&head->lock);
	220
	221	if (twp != NULL) {
	222	*twp = tw;
	223	NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
	224	} else if (tw != NULL) {
	225	/* Silly. Should hash-dance instead... */
	226	inet_twsk_deschedule(tw, death_row);
	227	NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
	228
	229	inet_twsk_put(tw);
	230	}
	231	return 0;
	232
	233	not_unique:
	234	write_unlock(&head->lock);
	235	return -EADDRNOTAVAIL;
	236	}
	237
	238	static inline u32 inet6_sk_port_offset(const struct sock *sk)
	239	{
	240	const struct inet_sock *inet = inet_sk(sk);
	241	const struct ipv6_pinfo *np = inet6_sk(sk);
	242	return secure_ipv6_port_ephemeral(np->rcv_saddr.s6_addr32,
	243	np->daddr.s6_addr32,
	244	inet->dport);
	245	}
	246
	247	int inet6_hash_connect(struct inet_timewait_death_row *death_row,
	248	struct sock *sk)
	249	{
	250	struct inet_hashinfo *hinfo = death_row->hashinfo;
	251	const unsigned short snum = inet_sk(sk)->num;
	252	struct inet_bind_hashbucket *head;
	253	struct inet_bind_bucket *tb;
	254	int ret;
	255
	256	if (snum == 0) {
	257	const int low = sysctl_local_port_range[0];
	258	const int high = sysctl_local_port_range[1];
	259	const int range = high - low;
	260	int i, port;
	261	static u32 hint;
	262	const u32 offset = hint + inet6_sk_port_offset(sk);
	263	struct hlist_node *node;
	264	struct inet_timewait_sock *tw = NULL;
	265
	266	local_bh_disable();
	267	for (i = 1; i <= range; i++) {
	268	port = low + (i + offset) % range;
	269	head = &hinfo->bhash[inet_bhashfn(port, hinfo->bhash_size)];
	270	spin_lock(&head->lock);
	271
	272	/* Does not bother with rcv_saddr checks,
	273	* because the established check is already
	274	* unique enough.
	275	*/
	276	inet_bind_bucket_for_each(tb, node, &head->chain) {
	277	if (tb->port == port) {
	278	BUG_TRAP(!hlist_empty(&tb->owners));
279	if (tb->fastreuse >= 0)
280	goto next_port;
281	if (!__inet6_check_established(death_row,
282	sk, port,
283	&tw))
284	goto ok;
285	goto next_port;
286	}
287	}
288
289	tb = inet_bind_bucket_create(hinfo->bind_bucket_cachep,
290	head, port);
291	if (!tb) {
292	spin_unlock(&head->lock);
293	break;
294	}
295	tb->fastreuse = -1;
296	goto ok;
297
298	next_port:
299	spin_unlock(&head->lock);
300	}
301	local_bh_enable();
302
303	return -EADDRNOTAVAIL;
304
305	ok:
306	hint += i;
307
308	/* Head lock still held and bh's disabled */
309	inet_bind_hash(sk, tb, port);
310	if (sk_unhashed(sk)) {
311	inet_sk(sk)->sport = htons(port);
312	__inet6_hash(hinfo, sk);
313	}
314	spin_unlock(&head->lock);
315
316	if (tw) {
317	inet_twsk_deschedule(tw, death_row);
318	inet_twsk_put(tw);
319	}
320
321	ret = 0;
322	goto out;
323	}
324
325	head = &hinfo->bhash[inet_bhashfn(snum, hinfo->bhash_size)];
326	tb = inet_csk(sk)->icsk_bind_hash;
327	spin_lock_bh(&head->lock);
328
329	if (sk_head(&tb->owners) == sk && sk->sk_bind_node.next == NULL) {
330	__inet6_hash(hinfo, sk);
331	spin_unlock_bh(&head->lock);
332	return 0;
333	} else {
334	spin_unlock(&head->lock);
335	/* No definite answer... Walk to established hash table */
336	ret = __inet6_check_established(death_row, sk, snum, NULL);
337	out:
338	local_bh_enable();
339	return ret;
340	}
341	}
342
343	EXPORT_SYMBOL_GPL(inet6_hash_connect);