[TCP]: Fix zero port problem in IPv6

[Herbert Xu]

Hi Dave:

I was looking into the bug report titled

        [IPv6 since 2.6.12] connect() without bind() can't time out.

There are actually a couple of different issues here.  Here is a fix to
the most obvious one.

[TCP]: Fix zero port problem in IPv6

When we link a socket into the hash table, we need to make sure that we
set the num/port fields so that it shows us with a non-zero port value
in proc/netlink and on the wire.  This code and comment is copied over
from the IPv4 stack as is.

Signed-off-by: Herbert Xu <[EMAIL PROTECTED]>

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <[EMAIL PROTECTED]>
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diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -87,7 +87,7 @@ static int __inet6_check_established(str
                                     struct inet_timewait_sock **twp)
 {
        struct inet_hashinfo *hinfo = death_row->hashinfo;
-       const struct inet_sock *inet = inet_sk(sk);
+       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;
@@ -129,6 +129,10 @@ static int __inet6_check_established(str
        }
 
 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;