[IPV6]: Generalise the tcp_v6_lookup routines

In the same way as was done with the v4 counterparts, this will be moved
to inet6_hashtables.c.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 777339b..3c7dbc6 100644 (file)
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -193,6 +193,11 @@ struct inet6_skb_parm {
 
 #define IP6CB(skb)     ((struct inet6_skb_parm*)((skb)->cb))
 
+static inline int inet6_iif(const struct sk_buff *skb)
+{
+       return IP6CB(skb)->iif;
+}
+
 struct tcp6_request_sock {
        struct tcp_request_sock req;
        struct in6_addr         loc_addr;

diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h
new file mode 100644 (file)
index 0000000..297c2b1
--- /dev/null
+++ b/include/net/inet6_hashtables.h
@@ -0,0 +1,26 @@
+/*
+ * 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.
+ *
+ * Authors:    Lotsa people, from code originally in tcp
+ *
+ *     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.
+ */
+
+#ifndef _INET6_HASHTABLES_H
+#define _INET6_HASHTABLES_H
+
+#include <linux/types.h>
+
+struct in6_addr;
+struct inet_hashinfo;
+
+extern 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);
+#endif /* _INET6_HASHTABLES_H */

diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index c844954..a79b4f9 100644 (file)
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -425,9 +425,6 @@ config IP_TCPDIAG
          
          If unsure, say Y.
 
-config IP_TCPDIAG_IPV6
-       def_bool (IP_TCPDIAG=y && IPV6=y) || (IP_TCPDIAG=m && IPV6)
-
 config IP_TCPDIAG_DCCP
        def_bool (IP_TCPDIAG=y && IP_DCCP=y) || (IP_TCPDIAG=m && IP_DCCP)
 

diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index 8bf495c..b812191 100644 (file)
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -24,6 +24,10 @@
 #include <net/tcp.h>
 #include <net/ipv6.h>
 #include <net/inet_common.h>
+#include <net/inet_connection_sock.h>
+#include <net/inet_hashtables.h>
+#include <net/inet_timewait_sock.h>
+#include <net/inet6_hashtables.h>
 
 #include <linux/inet.h>
 #include <linux/stddef.h>
@@ -102,7 +106,7 @@ static int tcpdiag_fill(struct sk_buff *skb, struct sock *sk,
                r->tcpdiag_wqueue = 0;
                r->tcpdiag_uid = 0;
                r->tcpdiag_inode = 0;
-#ifdef CONFIG_IP_TCPDIAG_IPV6
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
                if (r->tcpdiag_family == AF_INET6) {
                        const struct tcp6_timewait_sock *tcp6tw = tcp6_twsk(sk);
 
@@ -121,7 +125,7 @@ static int tcpdiag_fill(struct sk_buff *skb, struct sock *sk,
        r->id.tcpdiag_src[0] = inet->rcv_saddr;
        r->id.tcpdiag_dst[0] = inet->daddr;
 
-#ifdef CONFIG_IP_TCPDIAG_IPV6
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
        if (r->tcpdiag_family == AF_INET6) {
                struct ipv6_pinfo *np = inet6_sk(sk);
 
@@ -196,19 +200,6 @@ nlmsg_failure:
        return -1;
 }
 
-#ifdef CONFIG_IP_TCPDIAG_IPV6
-extern struct sock *tcp_v6_lookup(struct in6_addr *saddr, u16 sport,
-                                 struct in6_addr *daddr, u16 dport,
-                                 int dif);
-#else
-static inline struct sock *tcp_v6_lookup(struct in6_addr *saddr, u16 sport,
-                                        struct in6_addr *daddr, u16 dport,
-                                        int dif)
-{
-       return NULL;
-}
-#endif
-
 static int tcpdiag_get_exact(struct sk_buff *in_skb, const struct nlmsghdr *nlh)
 {
        int err;
@@ -225,11 +216,14 @@ static int tcpdiag_get_exact(struct sk_buff *in_skb, const struct nlmsghdr *nlh)
                                 req->id.tcpdiag_dport, req->id.tcpdiag_src[0],
                                 req->id.tcpdiag_sport, req->id.tcpdiag_if);
        }
-#ifdef CONFIG_IP_TCPDIAG_IPV6
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
        else if (req->tcpdiag_family == AF_INET6) {
-               sk = tcp_v6_lookup((struct in6_addr*)req->id.tcpdiag_dst, req->id.tcpdiag_dport,
-                                  (struct in6_addr*)req->id.tcpdiag_src, req->id.tcpdiag_sport,
-                                  req->id.tcpdiag_if);
+               sk = inet6_lookup(hashinfo,
+                                 (struct in6_addr*)req->id.tcpdiag_dst,
+                                 req->id.tcpdiag_dport,
+                                 (struct in6_addr*)req->id.tcpdiag_src,
+                                 req->id.tcpdiag_sport,
+                                 req->id.tcpdiag_if);
        }
 #endif
        else {
@@ -440,7 +434,7 @@ static int tcpdiag_dump_sock(struct sk_buff *skb, struct sock *sk,
                struct inet_sock *inet = inet_sk(sk);
 
                entry.family = sk->sk_family;
-#ifdef CONFIG_IP_TCPDIAG_IPV6
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
                if (entry.family == AF_INET6) {
                        struct ipv6_pinfo *np = inet6_sk(sk);
 
@@ -502,7 +496,7 @@ static int tcpdiag_fill_req(struct sk_buff *skb, struct sock *sk,
        r->tcpdiag_wqueue = 0;
        r->tcpdiag_uid = sock_i_uid(sk);
        r->tcpdiag_inode = 0;
-#ifdef CONFIG_IP_TCPDIAG_IPV6
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
        if (r->tcpdiag_family == AF_INET6) {
                ipv6_addr_copy((struct in6_addr *)r->id.tcpdiag_src,
                               &tcp6_rsk(req)->loc_addr);
@@ -567,13 +561,13 @@ static int tcpdiag_dump_reqs(struct sk_buff *skb, struct sock *sk,
 
                        if (bc) {
                                entry.saddr =
-#ifdef CONFIG_IP_TCPDIAG_IPV6
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
                                        (entry.family == AF_INET6) ?
                                        tcp6_rsk(req)->loc_addr.s6_addr32 :
 #endif
                                        &ireq->loc_addr;
                                entry.daddr = 
-#ifdef CONFIG_IP_TCPDIAG_IPV6
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
                                        (entry.family == AF_INET6) ?
                                        tcp6_rsk(req)->rmt_addr.s6_addr32 :
 #endif

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 3312cb8..2bc7faf 100644 (file)
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -76,26 +76,27 @@ static struct tcp_func ipv6_mapped;
 static struct tcp_func ipv6_specific;
 
 /* I have no idea if this is a good hash for v6 or not. -DaveM */
-static __inline__ int tcp_v6_hashfn(struct in6_addr *laddr, u16 lport,
-                                   struct in6_addr *faddr, u16 fport)
+static inline int inet6_ehashfn(const struct in6_addr *laddr, const u16 lport,
+                               const struct in6_addr *faddr, const u16 fport,
+                               const int ehash_size)
 {
        int hashent = (lport ^ fport);
 
        hashent ^= (laddr->s6_addr32[3] ^ faddr->s6_addr32[3]);
        hashent ^= hashent>>16;
        hashent ^= hashent>>8;
-       return (hashent & (tcp_hashinfo.ehash_size - 1));
+       return (hashent & (ehash_size - 1));
 }
 
-static __inline__ int tcp_v6_sk_hashfn(struct sock *sk)
+static inline int inet6_sk_ehashfn(const struct sock *sk, const int ehash_size)
 {
-       struct inet_sock *inet = inet_sk(sk);
-       struct ipv6_pinfo *np = inet6_sk(sk);
-       struct in6_addr *laddr = &np->rcv_saddr;
-       struct in6_addr *faddr = &np->daddr;
-       __u16 lport = inet->num;
-       __u16 fport = inet->dport;
-       return tcp_v6_hashfn(laddr, lport, faddr, fport);
+       const struct inet_sock *inet = inet_sk(sk);
+       const struct ipv6_pinfo *np = inet6_sk(sk);
+       const struct in6_addr *laddr = &np->rcv_saddr;
+       const struct in6_addr *faddr = &np->daddr;
+       const __u16 lport = inet->num;
+       const __u16 fport = inet->dport;
+       return inet6_ehashfn(laddr, lport, faddr, fport, ehash_size);
 }
 
 static inline int tcp_v6_bind_conflict(const struct sock *sk,
@@ -231,7 +232,7 @@ static __inline__ void __tcp_v6_hash(struct sock *sk)
                lock = &tcp_hashinfo.lhash_lock;
                inet_listen_wlock(&tcp_hashinfo);
        } else {
-               sk->sk_hashent = tcp_v6_sk_hashfn(sk);
+               sk->sk_hashent = inet6_sk_ehashfn(sk, tcp_hashinfo.ehash_size);
                list = &tcp_hashinfo.ehash[sk->sk_hashent].chain;
                lock = &tcp_hashinfo.ehash[sk->sk_hashent].lock;
                write_lock(lock);
@@ -258,7 +259,10 @@ static void tcp_v6_hash(struct sock *sk)
        }
 }
 
-static struct sock *tcp_v6_lookup_listener(struct in6_addr *daddr, unsigned short hnum, int dif)
+static struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo,
+                                         const struct in6_addr *daddr,
+                                         const unsigned short hnum,
+                                         const int dif)
 {
        struct sock *sk;
        struct hlist_node *node;
@@ -266,8 +270,8 @@ static struct sock *tcp_v6_lookup_listener(struct in6_addr *daddr, unsigned shor
        int score, hiscore;
 
        hiscore=0;
-       read_lock(&tcp_hashinfo.lhash_lock);
-       sk_for_each(sk, node, &tcp_hashinfo.listening_hash[inet_lhashfn(hnum)]) {
+       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) {
                        struct ipv6_pinfo *np = inet6_sk(sk);
                        
@@ -294,7 +298,7 @@ static struct sock *tcp_v6_lookup_listener(struct in6_addr *daddr, unsigned shor
        }
        if (result)
                sock_hold(result);
-       read_unlock(&tcp_hashinfo.lhash_lock);
+       read_unlock(&hashinfo->lhash_lock);
        return result;
 }
 
@@ -304,9 +308,13 @@ static struct sock *tcp_v6_lookup_listener(struct in6_addr *daddr, unsigned shor
  * The sockhash lock must be held as a reader here.
  */
 
-static inline struct sock *__tcp_v6_lookup_established(struct in6_addr *saddr, u16 sport,
-                                                      struct in6_addr *daddr, u16 hnum,
-                                                      int dif)
+static inline 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;
@@ -314,8 +322,9 @@ static inline struct sock *__tcp_v6_lookup_established(struct in6_addr *saddr, u
        /* Optimize here for direct hit, only listening connections can
         * have wildcards anyways.
         */
-       const int hash = tcp_v6_hashfn(daddr, hnum, saddr, sport);
-       struct inet_ehash_bucket *head = &tcp_hashinfo.ehash[hash];
+       const int hash = inet6_ehashfn(daddr, hnum, saddr, sport,
+                                      hashinfo->ehash_size);
+       struct inet_ehash_bucket *head = &hashinfo->ehash[hash];
 
        read_lock(&head->lock);
        sk_for_each(sk, node, &head->chain) {
@@ -324,7 +333,7 @@ static inline struct sock *__tcp_v6_lookup_established(struct in6_addr *saddr, u
                        goto hit; /* You sunk my battleship! */
        }
        /* Must check for a TIME_WAIT'er before going to listener hash. */
-       sk_for_each(sk, node, &(head + tcp_hashinfo.ehash_size)->chain) {
+       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        &&
@@ -347,34 +356,36 @@ hit:
 }
 
 
-static inline struct sock *__tcp_v6_lookup(struct in6_addr *saddr, u16 sport,
-                                          struct in6_addr *daddr, u16 hnum,
-                                          int dif)
+static inline struct sock *__inet6_lookup(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;
-
-       sk = __tcp_v6_lookup_established(saddr, sport, daddr, hnum, dif);
-
+       struct sock *sk = __inet6_lookup_established(hashinfo, saddr, sport,
+                                                    daddr, hnum, dif);
        if (sk)
                return sk;
 
-       return tcp_v6_lookup_listener(daddr, hnum, dif);
+       return inet6_lookup_listener(hashinfo, daddr, hnum, dif);
 }
 
-inline struct sock *tcp_v6_lookup(struct in6_addr *saddr, u16 sport,
-                                 struct in6_addr *daddr, u16 dport,
-                                 int dif)
+inline 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 = __tcp_v6_lookup(saddr, sport, daddr, ntohs(dport), dif);
+       sk = __inet6_lookup(hashinfo, saddr, sport, daddr, ntohs(dport), dif);
        local_bh_enable();
 
        return sk;
 }
 
-EXPORT_SYMBOL_GPL(tcp_v6_lookup);
+EXPORT_SYMBOL_GPL(inet6_lookup);
 
 
 /*
@@ -454,16 +465,17 @@ static __u32 tcp_v6_init_sequence(struct sock *sk, struct sk_buff *skb)
        }
 }
 
-static int __tcp_v6_check_established(struct sock *sk, __u16 lport,
+static int __tcp_v6_check_established(struct sock *sk, const __u16 lport,
                                      struct inet_timewait_sock **twp)
 {
        struct inet_sock *inet = inet_sk(sk);
-       struct ipv6_pinfo *np = inet6_sk(sk);
-       struct in6_addr *daddr = &np->rcv_saddr;
-       struct in6_addr *saddr = &np->daddr;
-       int dif = sk->sk_bound_dev_if;
+       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 int hash = tcp_v6_hashfn(daddr, inet->num, saddr, inet->dport);
+       const int hash = inet6_ehashfn(daddr, inet->num, saddr, inet->dport,
+                                      tcp_hashinfo.ehash_size);
        struct inet_ehash_bucket *head = &tcp_hashinfo.ehash[hash];
        struct sock *sk2;
        const struct hlist_node *node;
@@ -637,11 +649,6 @@ out:
        }
 }
 
-static __inline__ int tcp_v6_iif(struct sk_buff *skb)
-{
-       return IP6CB(skb)->iif;
-}
-
 static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr, 
                          int addr_len)
 {
@@ -833,14 +840,15 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                int type, int code, int offset, __u32 info)
 {
        struct ipv6hdr *hdr = (struct ipv6hdr*)skb->data;
-       struct tcphdr *th = (struct tcphdr *)(skb->data+offset);
+       const struct tcphdr *th = (struct tcphdr *)(skb->data+offset);
        struct ipv6_pinfo *np;
        struct sock *sk;
        int err;
        struct tcp_sock *tp; 
        __u32 seq;
 
-       sk = tcp_v6_lookup(&hdr->daddr, th->dest, &hdr->saddr, th->source, skb->dev->ifindex);
+       sk = inet6_lookup(&tcp_hashinfo, &hdr->daddr, th->dest, &hdr->saddr,
+                         th->source, skb->dev->ifindex);
 
        if (sk == NULL) {
                ICMP6_INC_STATS_BH(__in6_dev_get(skb->dev), ICMP6_MIB_INERRORS);
@@ -927,7 +935,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                        goto out;
 
                req = tcp_v6_search_req(sk, &prev, th->dest, &hdr->daddr,
-                                       &hdr->saddr, tcp_v6_iif(skb));
+                                       &hdr->saddr, inet6_iif(skb));
                if (!req)
                        goto out;
 
@@ -1138,7 +1146,7 @@ static void tcp_v6_send_reset(struct sk_buff *skb)
                                    buff->csum);
 
        fl.proto = IPPROTO_TCP;
-       fl.oif = tcp_v6_iif(skb);
+       fl.oif = inet6_iif(skb);
        fl.fl_ip_dport = t1->dest;
        fl.fl_ip_sport = t1->source;
 
@@ -1207,7 +1215,7 @@ static void tcp_v6_send_ack(struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32
                                    buff->csum);
 
        fl.proto = IPPROTO_TCP;
-       fl.oif = tcp_v6_iif(skb);
+       fl.oif = inet6_iif(skb);
        fl.fl_ip_dport = t1->dest;
        fl.fl_ip_sport = t1->source;
 
@@ -1245,20 +1253,18 @@ static void tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req)
 static struct sock *tcp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)
 {
        struct request_sock *req, **prev;
-       struct tcphdr *th = skb->h.th;
+       const struct tcphdr *th = skb->h.th;
        struct sock *nsk;
 
        /* Find possible connection requests. */
        req = tcp_v6_search_req(sk, &prev, th->source, &skb->nh.ipv6h->saddr,
-                               &skb->nh.ipv6h->daddr, tcp_v6_iif(skb));
+                               &skb->nh.ipv6h->daddr, inet6_iif(skb));
        if (req)
                return tcp_check_req(sk, skb, req, prev);
 
-       nsk = __tcp_v6_lookup_established(&skb->nh.ipv6h->saddr,
-                                         th->source,
-                                         &skb->nh.ipv6h->daddr,
-                                         ntohs(th->dest),
-                                         tcp_v6_iif(skb));
+       nsk = __inet6_lookup_established(&tcp_hashinfo, &skb->nh.ipv6h->saddr,
+                                        th->source, &skb->nh.ipv6h->daddr,
+                                        ntohs(th->dest), inet6_iif(skb));
 
        if (nsk) {
                if (nsk->sk_state != TCP_TIME_WAIT) {
@@ -1346,7 +1352,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
        /* So that link locals have meaning */
        if (!sk->sk_bound_dev_if &&
            ipv6_addr_type(&treq->rmt_addr) & IPV6_ADDR_LINKLOCAL)
-               treq->iif = tcp_v6_iif(skb);
+               treq->iif = inet6_iif(skb);
 
        if (isn == 0) 
                isn = tcp_v6_init_sequence(sk,skb);
@@ -1411,7 +1417,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
                newsk->sk_backlog_rcv = tcp_v4_do_rcv;
                newnp->pktoptions  = NULL;
                newnp->opt         = NULL;
-               newnp->mcast_oif   = tcp_v6_iif(skb);
+               newnp->mcast_oif   = inet6_iif(skb);
                newnp->mcast_hops  = skb->nh.ipv6h->hop_limit;
 
                /*
@@ -1516,7 +1522,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
                        skb_set_owner_r(newnp->pktoptions, newsk);
        }
        newnp->opt        = NULL;
-       newnp->mcast_oif  = tcp_v6_iif(skb);
+       newnp->mcast_oif  = inet6_iif(skb);
        newnp->mcast_hops = skb->nh.ipv6h->hop_limit;
 
        /* Clone native IPv6 options from listening socket (if any)
@@ -1691,7 +1697,7 @@ ipv6_pktoptions:
        if (TCP_SKB_CB(opt_skb)->end_seq == tp->rcv_nxt &&
            !((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_LISTEN))) {
                if (np->rxopt.bits.rxinfo)
-                       np->mcast_oif = tcp_v6_iif(opt_skb);
+                       np->mcast_oif = inet6_iif(opt_skb);
                if (np->rxopt.bits.rxhlim)
                        np->mcast_hops = opt_skb->nh.ipv6h->hop_limit;
                if (ipv6_opt_accepted(sk, opt_skb)) {
@@ -1746,8 +1752,9 @@ static int tcp_v6_rcv(struct sk_buff **pskb, unsigned int *nhoffp)
        TCP_SKB_CB(skb)->flags = ipv6_get_dsfield(skb->nh.ipv6h);
        TCP_SKB_CB(skb)->sacked = 0;
 
-       sk = __tcp_v6_lookup(&skb->nh.ipv6h->saddr, th->source,
-                            &skb->nh.ipv6h->daddr, ntohs(th->dest), tcp_v6_iif(skb));
+       sk = __inet6_lookup(&tcp_hashinfo, &skb->nh.ipv6h->saddr, th->source,
+                           &skb->nh.ipv6h->daddr, ntohs(th->dest),
+                           inet6_iif(skb));
 
        if (!sk)
                goto no_tcp_socket;
@@ -1818,7 +1825,9 @@ do_time_wait:
        {
                struct sock *sk2;
 
-               sk2 = tcp_v6_lookup_listener(&skb->nh.ipv6h->daddr, ntohs(th->dest), tcp_v6_iif(skb));
+               sk2 = inet6_lookup_listener(&tcp_hashinfo,
+                                           &skb->nh.ipv6h->daddr,
+                                           ntohs(th->dest), inet6_iif(skb));
                if (sk2 != NULL) {
                        struct inet_timewait_sock *tw = inet_twsk(sk);
                        inet_twsk_deschedule(tw, &tcp_death_row);