net: avoid to call skb_queue_len again

the queue length of sd->input_pkt_queue has been put into qlen,
and impossible to change, since hold the lock

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index dd3bf582e6f0..3f191da383f6 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3297,7 +3297,7 @@ static int enqueue_to_backlog(struct sk_buff *skb, int cpu,
         rps_lock(sd);
         qlen = skb_queue_len(&sd->input_pkt_queue);
         if (qlen <= netdev_max_backlog && !skb_flow_limit(skb, qlen)) {
-                if (skb_queue_len(&sd->input_pkt_queue)) {
+                if (qlen) {
 enqueue:
                         __skb_queue_tail(&sd->input_pkt_queue, skb);
                         input_queue_tail_incr_save(sd, qtail);