inet_hashtables: Add inet_lookup_skb helpers

To be able to use the cached socket reference in the skb during input
processing we add a new set of lookup functions that receive the skb on
their argument list.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: KOVACS Krisztian <hidden@sch.bme.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 4 insertions, 7 deletions

diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 882c5c4de69e..e3dfddab21cc 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -811,9 +811,8 @@ static int dccp_v4_rcv(struct sk_buff *skb)
 
         /* Step 2:
          *      Look up flow ID in table and get corresponding socket */
-        sk = __inet_lookup(dev_net(skb->dst->dev), &dccp_hashinfo,
-                           iph->saddr, dh->dccph_sport,
-                           iph->daddr, dh->dccph_dport, inet_iif(skb));
+        sk = __inet_lookup_skb(&dccp_hashinfo, skb,
+                               dh->dccph_sport, dh->dccph_dport);
         /*
          * Step 2:
          *      If no socket ...
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 5e1ee0da2c40..caa7f3469626 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -805,10 +805,8 @@ static int dccp_v6_rcv(struct sk_buff *skb)
 
         /* Step 2:
          *      Look up flow ID in table and get corresponding socket */
-        sk = __inet6_lookup(dev_net(skb->dst->dev), &dccp_hashinfo,
-                            &ipv6_hdr(skb)->saddr, dh->dccph_sport,
-                            &ipv6_hdr(skb)->daddr, ntohs(dh->dccph_dport),
-                            inet6_iif(skb));
+        sk = __inet6_lookup_skb(&dccp_hashinfo, skb,
+                                dh->dccph_sport, dh->dccph_dport);
         /*
          * Step 2:
          *      If no socket ...