[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>

1 files changed, 23 insertions, 0 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index 91d28957dc10..6961700ff3a0 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -926,6 +926,29 @@ static inline void sock_put(struct sock *sk)
                 sk_free(sk);
 }
 
+static inline int sk_receive_skb(struct sock *sk, struct sk_buff *skb)
+{
+        int rc = NET_RX_SUCCESS;
+
+        if (sk_filter(sk, skb, 0))
+                goto discard_and_relse;
+
+        skb->dev = NULL;
+
+        bh_lock_sock(sk);
+        if (!sock_owned_by_user(sk))
+                rc = sk->sk_backlog_rcv(sk, skb);
+        else
+                sk_add_backlog(sk, skb);
+        bh_unlock_sock(sk);
+out:
+        sock_put(sk);
+        return rc;
+discard_and_relse:
+        kfree_skb(skb);
+        goto out;
+}
+
 /* Detach socket from process context.
  * Announce socket dead, detach it from wait queue and inode.
  * Note that parent inode held reference count on this struct sock,