[SOCK]: Introduce sk_receive_skb

Its common enough to to justify that, TCP still can't use it as it has the
prequeueing stuff, still to be made generic in the not so distant future :-)

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 3 insertions, 37 deletions

diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index c363051a7f1..99e8afa7ba1 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -914,7 +914,6 @@ int dccp_v4_rcv(struct sk_buff *skb)
 {
 	const struct dccp_hdr *dh;
 	struct sock *sk;
-	int rc;
 
 	/* Step 1: Check header basics: */
 
@@ -984,28 +983,10 @@ int dccp_v4_rcv(struct sk_buff *skb)
                 goto do_time_wait;
 	}
 
-	if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
-		dccp_pr_debug("xfrm4_policy_check failed\n");
+	if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto discard_and_relse;
-	}
-
-        if (sk_filter(sk, skb, 0)) {
-		dccp_pr_debug("sk_filter failed\n");
-                goto discard_and_relse;
-	}
-
-	skb->dev = NULL;
 
-	bh_lock_sock(sk);
-	rc = 0;
-	if (!sock_owned_by_user(sk))
-		rc = dccp_v4_do_rcv(sk, skb);
-	else
-		sk_add_backlog(sk, skb);
-	bh_unlock_sock(sk);
-
-	sock_put(sk);
-	return rc;
+	return sk_receive_skb(sk, skb);
 
 no_dccp_socket:
 	if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb))
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 599b0be2151..2e194c8f995 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -1032,7 +1032,6 @@ static int dccp_v6_rcv(struct sk_buff **pskb, unsigned int *nhoffp)
 	const struct dccp_hdr *dh;
 	struct sk_buff *skb = *pskb;
 	struct sock *sk;
-	int rc;
 
 	/* Step 1: Check header basics: */
 
@@ -1077,21 +1076,7 @@ static int dccp_v6_rcv(struct sk_buff **pskb, unsigned int *nhoffp)
 	if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto discard_and_relse;
 
-	if (sk_filter(sk, skb, 0))
-		goto discard_and_relse;
-
-	skb->dev = NULL;
-
-	bh_lock_sock(sk);
-	rc = 0;
-	if (!sock_owned_by_user(sk))
-		rc = dccp_v6_do_rcv(sk, skb);
-	else
-		sk_add_backlog(sk, skb);
-	bh_unlock_sock(sk);
-
-	sock_put(sk);
-	return rc ? -1 : 0;
+	return sk_receive_skb(sk, skb) ? -1 : 0;
 
 no_dccp_socket:
 	if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))