[TCP]: Tidy up skb_entail

Heck, it even saves us some few bytes:

[acme@newtoy net-2.6.20]$ codiff -f /tmp/tcp.o.before ../OUTPUT/qemu/net-2.6.20/net/ipv4/tcp.o
/pub/scm/linux/kernel/git/acme/net-2.6.20/net/ipv4/tcp.c:
  tcp_sendpage |   -7
  tcp_sendmsg  |   -5
 2 functions changed, 12 bytes removed
[acme@newtoy net-2.6.20]$

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 168f9de906bc06c94f8bd44308f5f2444f7eafaf..a6b228914b8ef08d38262c9cbd42a2e61bf0b103 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -463,11 +463,12 @@ static inline int forced_push(struct tcp_sock *tp)
 static inline void skb_entail(struct sock *sk, struct tcp_sock *tp,
                              struct sk_buff *skb)
 {
-       skb->csum = 0;
-       TCP_SKB_CB(skb)->seq = tp->write_seq;
-       TCP_SKB_CB(skb)->end_seq = tp->write_seq;
-       TCP_SKB_CB(skb)->flags = TCPCB_FLAG_ACK;
-       TCP_SKB_CB(skb)->sacked = 0;
+       struct tcp_skb_cb *tcb = TCP_SKB_CB(skb);
+
+       skb->csum    = 0;
+       tcb->seq     = tcb->end_seq = tp->write_seq;
+       tcb->flags   = TCPCB_FLAG_ACK;
+       tcb->sacked  = 0;
        skb_header_release(skb);
        __skb_queue_tail(&sk->sk_write_queue, skb);
        sk_charge_skb(sk, skb);