[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);