[IPV6] UDP: Rename IPv6 UDP files.

Rename net/ipv6/udp.c to net/ipv6/udp_ipv6.c
Rename net/ipv6/udplite.c to net/ipv6/udplite_ipv6.c.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

1 files changed, 0 insertions, 1065 deletions

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
deleted file mode 100644
index 55feac7..0000000
--- a/net/ipv6/udp.c
+++ /dev/null
@@ -1,1065 +0,0 @@
-/*
- *	UDP over IPv6
- *	Linux INET6 implementation
- *
- *	Authors:
- *	Pedro Roque		<roque@di.fc.ul.pt>
- *
- *	Based on linux/ipv4/udp.c
- *
- *	$Id: udp.c,v 1.65 2002/02/01 22:01:04 davem Exp $
- *
- *	Fixes:
- *	Hideaki YOSHIFUJI	:	sin6_scope_id support
- *	YOSHIFUJI Hideaki @USAGI and:	Support IPV6_V6ONLY socket option, which
- *	Alexey Kuznetsov		allow both IPv4 and IPv6 sockets to bind
- *					a single port at the same time.
- *      Kazunori MIYAZAWA @USAGI:       change process style to use ip6_append_data
- *      YOSHIFUJI Hideaki @USAGI:	convert /proc/net/udp6 to seq_file.
- *
- *	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/errno.h>
-#include <linux/types.h>
-#include <linux/socket.h>
-#include <linux/sockios.h>
-#include <linux/net.h>
-#include <linux/in6.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/ipv6.h>
-#include <linux/icmpv6.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/skbuff.h>
-#include <asm/uaccess.h>
-
-#include <net/ndisc.h>
-#include <net/protocol.h>
-#include <net/transp_v6.h>
-#include <net/ip6_route.h>
-#include <net/raw.h>
-#include <net/tcp_states.h>
-#include <net/ip6_checksum.h>
-#include <net/xfrm.h>
-
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include "udp_impl.h"
-
-static inline int udp_v6_get_port(struct sock *sk, unsigned short snum)
-{
-	return udp_get_port(sk, snum, ipv6_rcv_saddr_equal);
-}
-
-static struct sock *__udp6_lib_lookup(struct net *net,
-				      struct in6_addr *saddr, __be16 sport,
-				      struct in6_addr *daddr, __be16 dport,
-				      int dif, struct hlist_head udptable[])
-{
-	struct sock *sk, *result = NULL;
-	struct hlist_node *node;
-	unsigned short hnum = ntohs(dport);
-	int badness = -1;
-
-	read_lock(&udp_hash_lock);
-	sk_for_each(sk, node, &udptable[hnum & (UDP_HTABLE_SIZE - 1)]) {
-		struct inet_sock *inet = inet_sk(sk);
-
-		if (sk->sk_net == net && sk->sk_hash == hnum &&
-				sk->sk_family == PF_INET6) {
-			struct ipv6_pinfo *np = inet6_sk(sk);
-			int score = 0;
-			if (inet->dport) {
-				if (inet->dport != sport)
-					continue;
-				score++;
-			}
-			if (!ipv6_addr_any(&np->rcv_saddr)) {
-				if (!ipv6_addr_equal(&np->rcv_saddr, daddr))
-					continue;
-				score++;
-			}
-			if (!ipv6_addr_any(&np->daddr)) {
-				if (!ipv6_addr_equal(&np->daddr, saddr))
-					continue;
-				score++;
-			}
-			if (sk->sk_bound_dev_if) {
-				if (sk->sk_bound_dev_if != dif)
-					continue;
-				score++;
-			}
-			if (score == 4) {
-				result = sk;
-				break;
-			} else if (score > badness) {
-				result = sk;
-				badness = score;
-			}
-		}
-	}
-	if (result)
-		sock_hold(result);
-	read_unlock(&udp_hash_lock);
-	return result;
-}
-
-/*
- * 	This should be easy, if there is something there we
- * 	return it, otherwise we block.
- */
-
-int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
-		  struct msghdr *msg, size_t len,
-		  int noblock, int flags, int *addr_len)
-{
-	struct ipv6_pinfo *np = inet6_sk(sk);
-	struct inet_sock *inet = inet_sk(sk);
-	struct sk_buff *skb;
-	unsigned int ulen, copied;
-	int peeked;
-	int err;
-	int is_udplite = IS_UDPLITE(sk);
-
-	if (addr_len)
-		*addr_len=sizeof(struct sockaddr_in6);
-
-	if (flags & MSG_ERRQUEUE)
-		return ipv6_recv_error(sk, msg, len);
-
-try_again:
-	skb = __skb_recv_datagram(sk, flags | (noblock ? MSG_DONTWAIT : 0),
-				  &peeked, &err);
-	if (!skb)
-		goto out;
-
-	ulen = skb->len - sizeof(struct udphdr);
-	copied = len;
-	if (copied > ulen)
-		copied = ulen;
-	else if (copied < ulen)
-		msg->msg_flags |= MSG_TRUNC;
-
-	/*
-	 * If checksum is needed at all, try to do it while copying the
-	 * data.  If the data is truncated, or if we only want a partial
-	 * coverage checksum (UDP-Lite), do it before the copy.
-	 */
-
-	if (copied < ulen || UDP_SKB_CB(skb)->partial_cov) {
-		if (udp_lib_checksum_complete(skb))
-			goto csum_copy_err;
-	}
-
-	if (skb_csum_unnecessary(skb))
-		err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr),
-					      msg->msg_iov, copied       );
-	else {
-		err = skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov);
-		if (err == -EINVAL)
-			goto csum_copy_err;
-	}
-	if (err)
-		goto out_free;
-
-	if (!peeked)
-		UDP6_INC_STATS_USER(UDP_MIB_INDATAGRAMS, is_udplite);
-
-	sock_recv_timestamp(msg, sk, skb);
-
-	/* Copy the address. */
-	if (msg->msg_name) {
-		struct sockaddr_in6 *sin6;
-
-		sin6 = (struct sockaddr_in6 *) msg->msg_name;
-		sin6->sin6_family = AF_INET6;
-		sin6->sin6_port = udp_hdr(skb)->source;
-		sin6->sin6_flowinfo = 0;
-		sin6->sin6_scope_id = 0;
-
-		if (skb->protocol == htons(ETH_P_IP))
-			ipv6_addr_set(&sin6->sin6_addr, 0, 0,
-				      htonl(0xffff), ip_hdr(skb)->saddr);
-		else {
-			ipv6_addr_copy(&sin6->sin6_addr,
-				       &ipv6_hdr(skb)->saddr);
-			if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
-				sin6->sin6_scope_id = IP6CB(skb)->iif;
-		}
-
-	}
-	if (skb->protocol == htons(ETH_P_IP)) {
-		if (inet->cmsg_flags)
-			ip_cmsg_recv(msg, skb);
-	} else {
-		if (np->rxopt.all)
-			datagram_recv_ctl(sk, msg, skb);
-	}
-
-	err = copied;
-	if (flags & MSG_TRUNC)
-		err = ulen;
-
-out_free:
-	lock_sock(sk);
-	skb_free_datagram(sk, skb);
-	release_sock(sk);
-out:
-	return err;
-
-csum_copy_err:
-	lock_sock(sk);
-	if (!skb_kill_datagram(sk, skb, flags))
-		UDP6_INC_STATS_USER(UDP_MIB_INERRORS, is_udplite);
-	release_sock(sk);
-
-	if (flags & MSG_DONTWAIT)
-		return -EAGAIN;
-	goto try_again;
-}
-
-void __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
-		    int type, int code, int offset, __be32 info,
-		    struct hlist_head udptable[]                    )
-{
-	struct ipv6_pinfo *np;
-	struct ipv6hdr *hdr = (struct ipv6hdr*)skb->data;
-	struct in6_addr *saddr = &hdr->saddr;
-	struct in6_addr *daddr = &hdr->daddr;
-	struct udphdr *uh = (struct udphdr*)(skb->data+offset);
-	struct sock *sk;
-	int err;
-
-	sk = __udp6_lib_lookup(skb->dev->nd_net, daddr, uh->dest,
-			       saddr, uh->source, inet6_iif(skb), udptable);
-	if (sk == NULL)
-		return;
-
-	np = inet6_sk(sk);
-
-	if (!icmpv6_err_convert(type, code, &err) && !np->recverr)
-		goto out;
-
-	if (sk->sk_state != TCP_ESTABLISHED && !np->recverr)
-		goto out;
-
-	if (np->recverr)
-		ipv6_icmp_error(sk, skb, err, uh->dest, ntohl(info), (u8 *)(uh+1));
-
-	sk->sk_err = err;
-	sk->sk_error_report(sk);
-out:
-	sock_put(sk);
-}
-
-static __inline__ void udpv6_err(struct sk_buff *skb,
-				 struct inet6_skb_parm *opt, int type,
-				 int code, int offset, __be32 info     )
-{
-	__udp6_lib_err(skb, opt, type, code, offset, info, udp_hash);
-}
-
-int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
-{
-	struct udp_sock *up = udp_sk(sk);
-	int rc;
-	int is_udplite = IS_UDPLITE(sk);
-
-	if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
-		goto drop;
-
-	/*
-	 * UDP-Lite specific tests, ignored on UDP sockets (see net/ipv4/udp.c).
-	 */
-	if ((is_udplite & UDPLITE_RECV_CC)  &&  UDP_SKB_CB(skb)->partial_cov) {
-
-		if (up->pcrlen == 0) {          /* full coverage was set  */
-			LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: partial coverage"
-				" %d while full coverage %d requested\n",
-				UDP_SKB_CB(skb)->cscov, skb->len);
-			goto drop;
-		}
-		if (UDP_SKB_CB(skb)->cscov  <  up->pcrlen) {
-			LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: coverage %d "
-						    "too small, need min %d\n",
-				       UDP_SKB_CB(skb)->cscov, up->pcrlen);
-			goto drop;
-		}
-	}
-
-	if (sk->sk_filter) {
-		if (udp_lib_checksum_complete(skb))
-			goto drop;
-	}
-
-	if ((rc = sock_queue_rcv_skb(sk,skb)) < 0) {
-		/* Note that an ENOMEM error is charged twice */
-		if (rc == -ENOMEM)
-			UDP6_INC_STATS_BH(UDP_MIB_RCVBUFERRORS, is_udplite);
-		goto drop;
-	}
-
-	return 0;
-drop:
-	UDP6_INC_STATS_BH(UDP_MIB_INERRORS, is_udplite);
-	kfree_skb(skb);
-	return -1;
-}
-
-static struct sock *udp_v6_mcast_next(struct sock *sk,
-				      __be16 loc_port, struct in6_addr *loc_addr,
-				      __be16 rmt_port, struct in6_addr *rmt_addr,
-				      int dif)
-{
-	struct hlist_node *node;
-	struct sock *s = sk;
-	unsigned short num = ntohs(loc_port);
-
-	sk_for_each_from(s, node) {
-		struct inet_sock *inet = inet_sk(s);
-
-		if (s->sk_hash == num && s->sk_family == PF_INET6) {
-			struct ipv6_pinfo *np = inet6_sk(s);
-			if (inet->dport) {
-				if (inet->dport != rmt_port)
-					continue;
-			}
-			if (!ipv6_addr_any(&np->daddr) &&
-			    !ipv6_addr_equal(&np->daddr, rmt_addr))
-				continue;
-
-			if (s->sk_bound_dev_if && s->sk_bound_dev_if != dif)
-				continue;
-
-			if (!ipv6_addr_any(&np->rcv_saddr)) {
-				if (!ipv6_addr_equal(&np->rcv_saddr, loc_addr))
-					continue;
-			}
-			if (!inet6_mc_check(s, loc_addr, rmt_addr))
-				continue;
-			return s;
-		}
-	}
-	return NULL;
-}
-
-/*
- * Note: called only from the BH handler context,
- * so we don't need to lock the hashes.
- */
-static int __udp6_lib_mcast_deliver(struct sk_buff *skb, struct in6_addr *saddr,
-			   struct in6_addr *daddr, struct hlist_head udptable[])
-{
-	struct sock *sk, *sk2;
-	const struct udphdr *uh = udp_hdr(skb);
-	int dif;
-
-	read_lock(&udp_hash_lock);
-	sk = sk_head(&udptable[ntohs(uh->dest) & (UDP_HTABLE_SIZE - 1)]);
-	dif = inet6_iif(skb);
-	sk = udp_v6_mcast_next(sk, uh->dest, daddr, uh->source, saddr, dif);
-	if (!sk) {
-		kfree_skb(skb);
-		goto out;
-	}
-
-	sk2 = sk;
-	while ((sk2 = udp_v6_mcast_next(sk_next(sk2), uh->dest, daddr,
-					uh->source, saddr, dif))) {
-		struct sk_buff *buff = skb_clone(skb, GFP_ATOMIC);
-		if (buff) {
-			bh_lock_sock_nested(sk2);
-			if (!sock_owned_by_user(sk2))
-				udpv6_queue_rcv_skb(sk2, buff);
-			else
-				sk_add_backlog(sk2, buff);
-			bh_unlock_sock(sk2);
-		}
-	}
-	bh_lock_sock_nested(sk);
-	if (!sock_owned_by_user(sk))
-		udpv6_queue_rcv_skb(sk, skb);
-	else
-		sk_add_backlog(sk, skb);
-	bh_unlock_sock(sk);
-out:
-	read_unlock(&udp_hash_lock);
-	return 0;
-}
-
-static inline int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh,
-				 int proto)
-{
-	int err;
-
-	UDP_SKB_CB(skb)->partial_cov = 0;
-	UDP_SKB_CB(skb)->cscov = skb->len;
-
-	if (IS_PROTO_UDPLITE(proto)) {
-		err = udplite_checksum_init(skb, uh);
-		if (err)
-			return err;
-	}
-
-	if (uh->check == 0) {
-		/* RFC 2460 section 8.1 says that we SHOULD log
-		   this error. Well, it is reasonable.
-		 */
-		LIMIT_NETDEBUG(KERN_INFO "IPv6: udp checksum is 0\n");
-		return 1;
-	}
-	if (skb->ip_summed == CHECKSUM_COMPLETE &&
-	    !csum_ipv6_magic(&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
-			     skb->len, proto, skb->csum))
-		skb->ip_summed = CHECKSUM_UNNECESSARY;
-
-	if (!skb_csum_unnecessary(skb))
-		skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
-							 &ipv6_hdr(skb)->daddr,
-							 skb->len, proto, 0));
-
-	return 0;
-}
-
-int __udp6_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
-		   int proto)
-{
-	struct sock *sk;
-	struct udphdr *uh;
-	struct net_device *dev = skb->dev;
-	struct in6_addr *saddr, *daddr;
-	u32 ulen = 0;
-
-	if (!pskb_may_pull(skb, sizeof(struct udphdr)))
-		goto short_packet;
-
-	saddr = &ipv6_hdr(skb)->saddr;
-	daddr = &ipv6_hdr(skb)->daddr;
-	uh = udp_hdr(skb);
-
-	ulen = ntohs(uh->len);
-	if (ulen > skb->len)
-		goto short_packet;
-
-	if (proto == IPPROTO_UDP) {
-		/* UDP validates ulen. */
-
-		/* Check for jumbo payload */
-		if (ulen == 0)
-			ulen = skb->len;
-
-		if (ulen < sizeof(*uh))
-			goto short_packet;
-
-		if (ulen < skb->len) {
-			if (pskb_trim_rcsum(skb, ulen))
-				goto short_packet;
-			saddr = &ipv6_hdr(skb)->saddr;
-			daddr = &ipv6_hdr(skb)->daddr;
-			uh = udp_hdr(skb);
-		}
-	}
-
-	if (udp6_csum_init(skb, uh, proto))
-		goto discard;
-
-	/*
-	 *	Multicast receive code
-	 */
-	if (ipv6_addr_is_multicast(daddr))
-		return __udp6_lib_mcast_deliver(skb, saddr, daddr, udptable);
-
-	/* Unicast */
-
-	/*
-	 * check socket cache ... must talk to Alan about his plans
-	 * for sock caches... i'll skip this for now.
-	 */
-	sk = __udp6_lib_lookup(skb->dev->nd_net, saddr, uh->source,
-			       daddr, uh->dest, inet6_iif(skb), udptable);
-
-	if (sk == NULL) {
-		if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
-			goto discard;
-
-		if (udp_lib_checksum_complete(skb))
-			goto discard;
-		UDP6_INC_STATS_BH(UDP_MIB_NOPORTS, IS_PROTO_UDPLITE(proto));
-
-		icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0, dev);
-
-		kfree_skb(skb);
-		return 0;
-	}
-
-	/* deliver */
-
-	bh_lock_sock_nested(sk);
-	if (!sock_owned_by_user(sk))
-		udpv6_queue_rcv_skb(sk, skb);
-	else
-		sk_add_backlog(sk, skb);
-	bh_unlock_sock(sk);
-	sock_put(sk);
-	return 0;
-
-short_packet:
-	LIMIT_NETDEBUG(KERN_DEBUG "UDP%sv6: short packet: %d/%u\n",
-		       IS_PROTO_UDPLITE(proto) ? "-Lite" : "",
-		       ulen, skb->len);
-
-discard:
-	UDP6_INC_STATS_BH(UDP_MIB_INERRORS, IS_PROTO_UDPLITE(proto));
-	kfree_skb(skb);
-	return 0;
-}
-
-static __inline__ int udpv6_rcv(struct sk_buff *skb)
-{
-	return __udp6_lib_rcv(skb, udp_hash, IPPROTO_UDP);
-}
-
-/*
- * Throw away all pending data and cancel the corking. Socket is locked.
- */
-static void udp_v6_flush_pending_frames(struct sock *sk)
-{
-	struct udp_sock *up = udp_sk(sk);
-
-	if (up->pending) {
-		up->len = 0;
-		up->pending = 0;
-		ip6_flush_pending_frames(sk);
-	}
-}
-
-/*
- *	Sending
- */
-
-static int udp_v6_push_pending_frames(struct sock *sk)
-{
-	struct sk_buff *skb;
-	struct udphdr *uh;
-	struct udp_sock  *up = udp_sk(sk);
-	struct inet_sock *inet = inet_sk(sk);
-	struct flowi *fl = &inet->cork.fl;
-	int err = 0;
-	int is_udplite = IS_UDPLITE(sk);
-	__wsum csum = 0;
-
-	/* Grab the skbuff where UDP header space exists. */
-	if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
-		goto out;
-
-	/*
-	 * Create a UDP header
-	 */
-	uh = udp_hdr(skb);
-	uh->source = fl->fl_ip_sport;
-	uh->dest = fl->fl_ip_dport;
-	uh->len = htons(up->len);
-	uh->check = 0;
-
-	if (is_udplite)
-		csum = udplite_csum_outgoing(sk, skb);
-	 else
-		csum = udp_csum_outgoing(sk, skb);
-
-	/* add protocol-dependent pseudo-header */
-	uh->check = csum_ipv6_magic(&fl->fl6_src, &fl->fl6_dst,
-				    up->len, fl->proto, csum   );
-	if (uh->check == 0)
-		uh->check = CSUM_MANGLED_0;
-
-	err = ip6_push_pending_frames(sk);
-out:
-	up->len = 0;
-	up->pending = 0;
-	if (!err)
-		UDP6_INC_STATS_USER(UDP_MIB_OUTDATAGRAMS, is_udplite);
-	return err;
-}
-
-int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk,
-		  struct msghdr *msg, size_t len)
-{
-	struct ipv6_txoptions opt_space;
-	struct udp_sock *up = udp_sk(sk);
-	struct inet_sock *inet = inet_sk(sk);
-	struct ipv6_pinfo *np = inet6_sk(sk);
-	struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) msg->msg_name;
-	struct in6_addr *daddr, *final_p = NULL, final;
-	struct ipv6_txoptions *opt = NULL;
-	struct ip6_flowlabel *flowlabel = NULL;
-	struct flowi fl;
-	struct dst_entry *dst;
-	int addr_len = msg->msg_namelen;
-	int ulen = len;
-	int hlimit = -1;
-	int tclass = -1;
-	int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
-	int err;
-	int connected = 0;
-	int is_udplite = IS_UDPLITE(sk);
-	int (*getfrag)(void *, char *, int, int, int, struct sk_buff *);
-
-	/* destination address check */
-	if (sin6) {
-		if (addr_len < offsetof(struct sockaddr, sa_data))
-			return -EINVAL;
-
-		switch (sin6->sin6_family) {
-		case AF_INET6:
-			if (addr_len < SIN6_LEN_RFC2133)
-				return -EINVAL;
-			daddr = &sin6->sin6_addr;
-			break;
-		case AF_INET:
-			goto do_udp_sendmsg;
-		case AF_UNSPEC:
-			msg->msg_name = sin6 = NULL;
-			msg->msg_namelen = addr_len = 0;
-			daddr = NULL;
-			break;
-		default:
-			return -EINVAL;
-		}
-	} else if (!up->pending) {
-		if (sk->sk_state != TCP_ESTABLISHED)
-			return -EDESTADDRREQ;
-		daddr = &np->daddr;
-	} else
-		daddr = NULL;
-
-	if (daddr) {
-		if (ipv6_addr_v4mapped(daddr)) {
-			struct sockaddr_in sin;
-			sin.sin_family = AF_INET;
-			sin.sin_port = sin6 ? sin6->sin6_port : inet->dport;
-			sin.sin_addr.s_addr = daddr->s6_addr32[3];
-			msg->msg_name = &sin;
-			msg->msg_namelen = sizeof(sin);
-do_udp_sendmsg:
-			if (__ipv6_only_sock(sk))
-				return -ENETUNREACH;
-			return udp_sendmsg(iocb, sk, msg, len);
-		}
-	}
-
-	if (up->pending == AF_INET)
-		return udp_sendmsg(iocb, sk, msg, len);
-
-	/* Rough check on arithmetic overflow,
-	   better check is made in ip6_append_data().
-	   */
-	if (len > INT_MAX - sizeof(struct udphdr))
-		return -EMSGSIZE;
-
-	if (up->pending) {
-		/*
-		 * There are pending frames.
-		 * The socket lock must be held while it's corked.
-		 */
-		lock_sock(sk);
-		if (likely(up->pending)) {
-			if (unlikely(up->pending != AF_INET6)) {
-				release_sock(sk);
-				return -EAFNOSUPPORT;
-			}
-			dst = NULL;
-			goto do_append_data;
-		}
-		release_sock(sk);
-	}
-	ulen += sizeof(struct udphdr);
-
-	memset(&fl, 0, sizeof(fl));
-
-	if (sin6) {
-		if (sin6->sin6_port == 0)
-			return -EINVAL;
-
-		fl.fl_ip_dport = sin6->sin6_port;
-		daddr = &sin6->sin6_addr;
-
-		if (np->sndflow) {
-			fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
-			if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
-				flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
-				if (flowlabel == NULL)
-					return -EINVAL;
-				daddr = &flowlabel->dst;
-			}
-		}
-
-		/*
-		 * Otherwise it will be difficult to maintain
-		 * sk->sk_dst_cache.
-		 */
-		if (sk->sk_state == TCP_ESTABLISHED &&
-		    ipv6_addr_equal(daddr, &np->daddr))
-			daddr = &np->daddr;
-
-		if (addr_len >= sizeof(struct sockaddr_in6) &&
-		    sin6->sin6_scope_id &&
-		    ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
-			fl.oif = sin6->sin6_scope_id;
-	} else {
-		if (sk->sk_state != TCP_ESTABLISHED)
-			return -EDESTADDRREQ;
-
-		fl.fl_ip_dport = inet->dport;
-		daddr = &np->daddr;
-		fl.fl6_flowlabel = np->flow_label;
-		connected = 1;
-	}
-
-	if (!fl.oif)
-		fl.oif = sk->sk_bound_dev_if;
-
-	if (msg->msg_controllen) {
-		opt = &opt_space;
-		memset(opt, 0, sizeof(struct ipv6_txoptions));
-		opt->tot_len = sizeof(*opt);
-
-		err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
-		if (err < 0) {
-			fl6_sock_release(flowlabel);
-			return err;
-		}
-		if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
-			flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
-			if (flowlabel == NULL)
-				return -EINVAL;
-		}
-		if (!(opt->opt_nflen|opt->opt_flen))
-			opt = NULL;
-		connected = 0;
-	}
-	if (opt == NULL)
-		opt = np->opt;
-	if (flowlabel)
-		opt = fl6_merge_options(&opt_space, flowlabel, opt);
-	opt = ipv6_fixup_options(&opt_space, opt);
-
-	fl.proto = sk->sk_protocol;
-	ipv6_addr_copy(&fl.fl6_dst, daddr);
-	if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
-		ipv6_addr_copy(&fl.fl6_src, &np->saddr);
-	fl.fl_ip_sport = inet->sport;
-
-	/* merge ip6_build_xmit from ip6_output */
-	if (opt && opt->srcrt) {
-		struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
-		ipv6_addr_copy(&final, &fl.fl6_dst);
-		ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
-		final_p = &final;
-		connected = 0;
-	}
-
-	if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst)) {
-		fl.oif = np->mcast_oif;
-		connected = 0;
-	}
-
-	security_sk_classify_flow(sk, &fl);
-
-	err = ip6_sk_dst_lookup(sk, &dst, &fl);
-	if (err)
-		goto out;
-	if (final_p)
-		ipv6_addr_copy(&fl.fl6_dst, final_p);
-
-	if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) {
-		if (err == -EREMOTE)
-			err = ip6_dst_blackhole(sk, &dst, &fl);
-		if (err < 0)
-			goto out;
-	}
-
-	if (hlimit < 0) {
-		if (ipv6_addr_is_multicast(&fl.fl6_dst))
-			hlimit = np->mcast_hops;
-		else
-			hlimit = np->hop_limit;
-		if (hlimit < 0)
-			hlimit = dst_metric(dst, RTAX_HOPLIMIT);
-		if (hlimit < 0)
-			hlimit = ipv6_get_hoplimit(dst->dev);
-	}
-
-	if (tclass < 0) {
-		tclass = np->tclass;
-		if (tclass < 0)
-			tclass = 0;
-	}
-
-	if (msg->msg_flags&MSG_CONFIRM)
-		goto do_confirm;
-back_from_confirm:
-
-	lock_sock(sk);
-	if (unlikely(up->pending)) {
-		/* The socket is already corked while preparing it. */
-		/* ... which is an evident application bug. --ANK */
-		release_sock(sk);
-
-		LIMIT_NETDEBUG(KERN_DEBUG "udp cork app bug 2\n");
-		err = -EINVAL;
-		goto out;
-	}
-
-	up->pending = AF_INET6;
-
-do_append_data:
-	up->len += ulen;
-	getfrag  =  is_udplite ?  udplite_getfrag : ip_generic_getfrag;
-	err = ip6_append_data(sk, getfrag, msg->msg_iov, ulen,
-		sizeof(struct udphdr), hlimit, tclass, opt, &fl,
-		(struct rt6_info*)dst,
-		corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags);
-	if (err)
-		udp_v6_flush_pending_frames(sk);
-	else if (!corkreq)
-		err = udp_v6_push_pending_frames(sk);
-	else if (unlikely(skb_queue_empty(&sk->sk_write_queue)))
-		up->pending = 0;
-
-	if (dst) {
-		if (connected) {
-			ip6_dst_store(sk, dst,
-				      ipv6_addr_equal(&fl.fl6_dst, &np->daddr) ?
-				      &np->daddr : NULL,
-#ifdef CONFIG_IPV6_SUBTREES
-				      ipv6_addr_equal(&fl.fl6_src, &np->saddr) ?
-				      &np->saddr :
-#endif
-				      NULL);
-		} else {
-			dst_release(dst);
-		}
-	}
-
-	if (err > 0)
-		err = np->recverr ? net_xmit_errno(err) : 0;
-	release_sock(sk);
-out:
-	fl6_sock_release(flowlabel);
-	if (!err)
-		return len;
-	/*
-	 * ENOBUFS = no kernel mem, SOCK_NOSPACE = no sndbuf space.  Reporting
-	 * ENOBUFS might not be good (it's not tunable per se), but otherwise
-	 * we don't have a good statistic (IpOutDiscards but it can be too many
-	 * things).  We could add another new stat but at least for now that
-	 * seems like overkill.
-	 */
-	if (err == -ENOBUFS || test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
-		UDP6_INC_STATS_USER(UDP_MIB_SNDBUFERRORS, is_udplite);
-	}
-	return err;
-
-do_confirm:
-	dst_confirm(dst);
-	if (!(msg->msg_flags&MSG_PROBE) || len)
-		goto back_from_confirm;
-	err = 0;
-	goto out;
-}
-
-int udpv6_destroy_sock(struct sock *sk)
-{
-	lock_sock(sk);
-	udp_v6_flush_pending_frames(sk);
-	release_sock(sk);
-
-	inet6_destroy_sock(sk);
-
-	return 0;
-}
-
-/*
- *	Socket option code for UDP
- */
-int udpv6_setsockopt(struct sock *sk, int level, int optname,
-		     char __user *optval, int optlen)
-{
-	if (IS_SOL_UDPFAMILY(level))
-		return udp_lib_setsockopt(sk, level, optname, optval, optlen,
-					  udp_v6_push_pending_frames);
-	return ipv6_setsockopt(sk, level, optname, optval, optlen);
-}
-
-#ifdef CONFIG_COMPAT
-int compat_udpv6_setsockopt(struct sock *sk, int level, int optname,
-			    char __user *optval, int optlen)
-{
-	if (IS_SOL_UDPFAMILY(level))
-		return udp_lib_setsockopt(sk, level, optname, optval, optlen,
-					  udp_v6_push_pending_frames);
-	return compat_ipv6_setsockopt(sk, level, optname, optval, optlen);
-}
-#endif
-
-int udpv6_getsockopt(struct sock *sk, int level, int optname,
-		     char __user *optval, int __user *optlen)
-{
-	if (IS_SOL_UDPFAMILY(level))
-		return udp_lib_getsockopt(sk, level, optname, optval, optlen);
-	return ipv6_getsockopt(sk, level, optname, optval, optlen);
-}
-
-#ifdef CONFIG_COMPAT
-int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
-			    char __user *optval, int __user *optlen)
-{
-	if (IS_SOL_UDPFAMILY(level))
-		return udp_lib_getsockopt(sk, level, optname, optval, optlen);
-	return compat_ipv6_getsockopt(sk, level, optname, optval, optlen);
-}
-#endif
-
-static struct inet6_protocol udpv6_protocol = {
-	.handler	=	udpv6_rcv,
-	.err_handler	=	udpv6_err,
-	.flags		=	INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
-};
-
-/* ------------------------------------------------------------------------ */
-#ifdef CONFIG_PROC_FS
-
-static void udp6_sock_seq_show(struct seq_file *seq, struct sock *sp, int bucket)
-{
-	struct inet_sock *inet = inet_sk(sp);
-	struct ipv6_pinfo *np = inet6_sk(sp);
-	struct in6_addr *dest, *src;
-	__u16 destp, srcp;
-
-	dest  = &np->daddr;
-	src   = &np->rcv_saddr;
-	destp = ntohs(inet->dport);
-	srcp  = ntohs(inet->sport);
-	seq_printf(seq,
-		   "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
-		   "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p\n",
-		   bucket,
-		   src->s6_addr32[0], src->s6_addr32[1],
-		   src->s6_addr32[2], src->s6_addr32[3], srcp,
-		   dest->s6_addr32[0], dest->s6_addr32[1],
-		   dest->s6_addr32[2], dest->s6_addr32[3], destp,
-		   sp->sk_state,
-		   atomic_read(&sp->sk_wmem_alloc),
-		   atomic_read(&sp->sk_rmem_alloc),
-		   0, 0L, 0,
-		   sock_i_uid(sp), 0,
-		   sock_i_ino(sp),
-		   atomic_read(&sp->sk_refcnt), sp);
-}
-
-int udp6_seq_show(struct seq_file *seq, void *v)
-{
-	if (v == SEQ_START_TOKEN)
-		seq_printf(seq,
-			   "  sl  "
-			   "local_address                         "
-			   "remote_address                        "
-			   "st tx_queue rx_queue tr tm->when retrnsmt"
-			   "   uid  timeout inode\n");
-	else
-		udp6_sock_seq_show(seq, v, ((struct udp_iter_state *)seq->private)->bucket);
-	return 0;
-}
-
-static struct file_operations udp6_seq_fops;
-static struct udp_seq_afinfo udp6_seq_afinfo = {
-	.owner		= THIS_MODULE,
-	.name		= "udp6",
-	.family		= AF_INET6,
-	.hashtable	= udp_hash,
-	.seq_show	= udp6_seq_show,
-	.seq_fops	= &udp6_seq_fops,
-};
-
-int __init udp6_proc_init(void)
-{
-	return udp_proc_register(&udp6_seq_afinfo);
-}
-
-void udp6_proc_exit(void) {
-	udp_proc_unregister(&udp6_seq_afinfo);
-}
-#endif /* CONFIG_PROC_FS */
-
-/* ------------------------------------------------------------------------ */
-
-DEFINE_PROTO_INUSE(udpv6)
-
-struct proto udpv6_prot = {
-	.name		   = "UDPv6",
-	.owner		   = THIS_MODULE,
-	.close		   = udp_lib_close,
-	.connect	   = ip6_datagram_connect,
-	.disconnect	   = udp_disconnect,
-	.ioctl		   = udp_ioctl,
-	.destroy	   = udpv6_destroy_sock,
-	.setsockopt	   = udpv6_setsockopt,
-	.getsockopt	   = udpv6_getsockopt,
-	.sendmsg	   = udpv6_sendmsg,
-	.recvmsg	   = udpv6_recvmsg,
-	.backlog_rcv	   = udpv6_queue_rcv_skb,
-	.hash		   = udp_lib_hash,
-	.unhash		   = udp_lib_unhash,
-	.get_port	   = udp_v6_get_port,
-	.memory_allocated  = &udp_memory_allocated,
-	.sysctl_mem	   = sysctl_udp_mem,
-	.sysctl_wmem	   = &sysctl_udp_wmem_min,
-	.sysctl_rmem	   = &sysctl_udp_rmem_min,
-	.obj_size	   = sizeof(struct udp6_sock),
-#ifdef CONFIG_COMPAT
-	.compat_setsockopt = compat_udpv6_setsockopt,
-	.compat_getsockopt = compat_udpv6_getsockopt,
-#endif
-	REF_PROTO_INUSE(udpv6)
-};
-
-static struct inet_protosw udpv6_protosw = {
-	.type =      SOCK_DGRAM,
-	.protocol =  IPPROTO_UDP,
-	.prot =      &udpv6_prot,
-	.ops =       &inet6_dgram_ops,
-	.capability =-1,
-	.no_check =  UDP_CSUM_DEFAULT,
-	.flags =     INET_PROTOSW_PERMANENT,
-};
-
-
-int __init udpv6_init(void)
-{
-	int ret;
-
-	ret = inet6_add_protocol(&udpv6_protocol, IPPROTO_UDP);
-	if (ret)
-		goto out;
-
-	ret = inet6_register_protosw(&udpv6_protosw);
-	if (ret)
-		goto out_udpv6_protocol;
-out:
-	return ret;
-
-out_udpv6_protocol:
-	inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);
-	goto out;
-}
-
-void udpv6_exit(void)
-{
-	inet6_unregister_protosw(&udpv6_protosw);
-	inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);
-}