[NET]: Transform skb_queue_len() binary tests into skb_queue_empty()

This is part of the grand scheme to eliminate the qlen
member of skb_queue_head, and subsequently remove the
'list' member of sk_buff.

Most users of skb_queue_len() want to know if the queue is
empty or not, and that's trivially done with skb_queue_empty()
which doesn't use the skb_queue_head->qlen member and instead
uses the queue list emptyness as the test.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 3 deletions

diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index b127b4498565..0084227438c2 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -231,11 +231,10 @@ static void tcp_delack_timer(unsigned long data)
         }
         tp->ack.pending &= ~TCP_ACK_TIMER;
 
-        if (skb_queue_len(&tp->ucopy.prequeue)) {
+        if (!skb_queue_empty(&tp->ucopy.prequeue)) {
                 struct sk_buff *skb;
 
-                NET_ADD_STATS_BH(LINUX_MIB_TCPSCHEDULERFAILED, 
-                                 skb_queue_len(&tp->ucopy.prequeue));
+                NET_INC_STATS_BH(LINUX_MIB_TCPSCHEDULERFAILED);
 
                 while ((skb = __skb_dequeue(&tp->ucopy.prequeue)) != NULL)
                         sk->sk_backlog_rcv(sk, skb);