Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...

[pandora-kernel.git] / net / sched / sch_netem.c

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 298c0dd..3d2acc7 100644 (file)
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -438,18 +438,18 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
                if (q->rate) {
                        struct sk_buff_head *list = &sch->q;
 
-                       delay += packet_len_2_sched_time(skb->len, q);
-
                        if (!skb_queue_empty(list)) {
                                /*
-                                * Last packet in queue is reference point (now).
-                                * First packet in queue is already in flight,
-                                * calculate this time bonus and substract
+                                * Last packet in queue is reference point (now),
+                                * calculate this time bonus and subtract
                                 * from delay.
                                 */
-                               delay -= now - netem_skb_cb(skb_peek(list))->time_to_send;
+                               delay -= netem_skb_cb(skb_peek_tail(list))->time_to_send - now;
+                               delay = max_t(psched_tdiff_t, 0, delay);
                                now = netem_skb_cb(skb_peek_tail(list))->time_to_send;
                        }
+
+                       delay += packet_len_2_sched_time(skb->len, q);
                }
 
                cb->time_to_send = now + delay;