[NETNS]: Tcp-v6 sockets per-net lookup.

Add a net argument to inet6_lookup and propagate it further.
Actually, this is tcp-v6 implementation of what was done for
tcp-v4 sockets in a previous patch.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 14 insertions, 11 deletions

diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index c34786044a1b..4aaefc349a4b 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -457,16 +457,16 @@ static inline struct raw6_sock *raw6_sk(const struct sock *sk)
 #define inet_v6_ipv6only(__sk)		0
 #endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
 
-#define INET6_MATCH(__sk, __hash, __saddr, __daddr, __ports, __dif)\
-	(((__sk)->sk_hash == (__hash))				&& \
+#define INET6_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif)\
+	(((__sk)->sk_hash == (__hash)) && ((__sk)->sk_net == (__net))	&& \
 	 ((*((__portpair *)&(inet_sk(__sk)->dport))) == (__ports))  	&& \
 	 ((__sk)->sk_family		== AF_INET6)		&& \
 	 ipv6_addr_equal(&inet6_sk(__sk)->daddr, (__saddr))	&& \
 	 ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr))	&& \
 	 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
 
-#define INET6_TW_MATCH(__sk, __hash, __saddr, __daddr, __ports, __dif) \
-	(((__sk)->sk_hash == (__hash))					&& \
+#define INET6_TW_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif) \
+	(((__sk)->sk_hash == (__hash)) && ((__sk)->sk_net == (__net))	&& \
 	 (*((__portpair *)&(inet_twsk(__sk)->tw_dport)) == (__ports))	&& \
 	 ((__sk)->sk_family	       == PF_INET6)			&& \
 	 (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_daddr, (__saddr)))	&& \
diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h
index 668056b4bb0b..fdff630708ce 100644
--- a/include/net/inet6_hashtables.h
+++ b/include/net/inet6_hashtables.h
@@ -57,34 +57,37 @@ extern void __inet6_hash(struct inet_hashinfo *hashinfo, struct sock *sk);
  *
  * The sockhash lock must be held as a reader here.
  */
-extern struct sock *__inet6_lookup_established(struct inet_hashinfo *hashinfo,
+extern struct sock *__inet6_lookup_established(struct net *net,
+					   struct inet_hashinfo *hashinfo,
 					   const struct in6_addr *saddr,
 					   const __be16 sport,
 					   const struct in6_addr *daddr,
 					   const u16 hnum,
 					   const int dif);
 
-extern struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo,
+extern struct sock *inet6_lookup_listener(struct net *net,
+					  struct inet_hashinfo *hashinfo,
 					  const struct in6_addr *daddr,
 					  const unsigned short hnum,
 					  const int dif);
 
-static inline struct sock *__inet6_lookup(struct inet_hashinfo *hashinfo,
+static inline struct sock *__inet6_lookup(struct net *net,
+					  struct inet_hashinfo *hashinfo,
 					  const struct in6_addr *saddr,
 					  const __be16 sport,
 					  const struct in6_addr *daddr,
 					  const u16 hnum,
 					  const int dif)
 {
-	struct sock *sk = __inet6_lookup_established(hashinfo, saddr, sport,
-						     daddr, hnum, dif);
+	struct sock *sk = __inet6_lookup_established(net, hashinfo, saddr,
+						sport, daddr, hnum, dif);
 	if (sk)
 		return sk;
 
-	return inet6_lookup_listener(hashinfo, daddr, hnum, dif);
+	return inet6_lookup_listener(net, hashinfo, daddr, hnum, dif);
 }
 
-extern struct sock *inet6_lookup(struct inet_hashinfo *hashinfo,
+extern struct sock *inet6_lookup(struct net *net, struct inet_hashinfo *hashinfo,
 				 const struct in6_addr *saddr, const __be16 sport,
 				 const struct in6_addr *daddr, const __be16 dport,
 				 const int dif);