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

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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>
This commit is contained in:
David S. Miller
2005-07-08 14:57:23 -07:00
parent a92b7b8057
commit b03efcfb21
34 changed files with 84 additions and 89 deletions
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8
net/ipv4/tcp.c
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@@ -1105,7 +1105,7 @@ static void tcp_prequeue_process(struct sock *sk)
struct sk_buff *skb;
struct tcp_sock *tp = tcp_sk(sk);
NET_ADD_STATS_USER(LINUX_MIB_TCPPREQUEUED, skb_queue_len(&tp->ucopy.prequeue));
NET_INC_STATS_USER(LINUX_MIB_TCPPREQUEUED);
/* RX process wants to run with disabled BHs, though it is not
* necessary */
@@ -1369,7 +1369,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
* is not empty. It is more elegant, but eats cycles,
* unfortunately.
*/
if (skb_queue_len(&tp->ucopy.prequeue))
if (!skb_queue_empty(&tp->ucopy.prequeue))
goto do_prequeue;
/* __ Set realtime policy in scheduler __ */
@@ -1394,7 +1394,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
}
if (tp->rcv_nxt == tp->copied_seq &&
skb_queue_len(&tp->ucopy.prequeue)) {
!skb_queue_empty(&tp->ucopy.prequeue)) {
do_prequeue:
tcp_prequeue_process(sk);
@@ -1476,7 +1476,7 @@ skip_copy:
} while (len > 0);
if (user_recv) {
if (skb_queue_len(&tp->ucopy.prequeue)) {
if (!skb_queue_empty(&tp->ucopy.prequeue)) {
int chunk;
tp->ucopy.len = copied > 0 ? len : 0;