[NETNS]: Tcp-v4 sockets per-net lookup.

Add a net argument to inet_lookup and propagate it further
into lookup calls. Plus tune the __inet_check_established.

The dccp and inet_diag, which use that lookup functions
pass the init_net into them.

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

1 files changed, 8 insertions, 7 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 9aea88b8d4fc..77c1939a2b0d 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -369,8 +369,8 @@ void tcp_v4_err(struct sk_buff *skb, u32 info)
                 return;
         }
 
-        sk = inet_lookup(&tcp_hashinfo, iph->daddr, th->dest, iph->saddr,
-                         th->source, inet_iif(skb));
+        sk = inet_lookup(skb->dev->nd_net, &tcp_hashinfo, iph->daddr, th->dest,
+                        iph->saddr, th->source, inet_iif(skb));
         if (!sk) {
                 ICMP_INC_STATS_BH(ICMP_MIB_INERRORS);
                 return;
@@ -1503,8 +1503,8 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
         if (req)
                 return tcp_check_req(sk, skb, req, prev);
 
-        nsk = inet_lookup_established(&tcp_hashinfo, iph->saddr, th->source,
-                                      iph->daddr, th->dest, inet_iif(skb));
+        nsk = inet_lookup_established(sk->sk_net, &tcp_hashinfo, iph->saddr,
+                        th->source, iph->daddr, th->dest, inet_iif(skb));
 
         if (nsk) {
                 if (nsk->sk_state != TCP_TIME_WAIT) {
@@ -1661,8 +1661,8 @@ int tcp_v4_rcv(struct sk_buff *skb)
         TCP_SKB_CB(skb)->flags   = iph->tos;
         TCP_SKB_CB(skb)->sacked  = 0;
 
-        sk = __inet_lookup(&tcp_hashinfo, iph->saddr, th->source,
-                           iph->daddr, th->dest, inet_iif(skb));
+        sk = __inet_lookup(skb->dev->nd_net, &tcp_hashinfo, iph->saddr,
+                        th->source, iph->daddr, th->dest, inet_iif(skb));
         if (!sk)
                 goto no_tcp_socket;
 
@@ -1735,7 +1735,8 @@ do_time_wait:
         }
         switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {
         case TCP_TW_SYN: {
-                struct sock *sk2 = inet_lookup_listener(&tcp_hashinfo,
+                struct sock *sk2 = inet_lookup_listener(skb->dev->nd_net,
+                                                        &tcp_hashinfo,
                                                         iph->daddr, th->dest,
                                                         inet_iif(skb));
                 if (sk2) {