[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 <herbert@gondor.apana.org.au>

diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index 4154f3a..bb8ffb8 100644 (file)
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -87,7 +87,7 @@ static int __inet6_check_established(struct inet_timewait_death_row *death_row,
                                     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(struct inet_timewait_death_row *death_row,
        }
 
 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;