Hi,
I need help finding this patch that Stephen made.
He sent me a patch, but i do not think its related to the patch that
solved this problem. I will include the patch he did forward to me at
the bottom.
However here is the problem, i even rtied his misspelling of change :)
thorium-ini 15849-tests # tc qdisc add dev ath0 root handle 1:0 netem
drop 0%
thorium-ini 15849-tests # tc qdisc add dev ath0 parent 1:1 handle 10:
xcp capacity 54Mbit limit 500
thorium-ini 15849-tests # tc qdisc change dev ath0 root handle 1:0 netem
drop 1%
RTNETLINK answers: Invalid argument
thorium-ini 15849-tests # tc qdisc chang dev ath0 root handle 1:0 netem
drop 1%
RTNETLINK answers: Invalid argument
thorium-ini 15849-tests # tc qdisc change dev ath0 root handle 1: netem
drop 1%
RTNETLINK answers: Invalid argument
here is the patch i was forwarded, but did not solve this problem:
--- linux-2.6.orig/net/sched/sch_netem.c
+++ linux-2.6/net/sched/sch_netem.c
@@ -167,7 +167,7 @@ static int netem_enqueue(struct sk_buff
if (count == 0) {
sch->qstats.drops++;
kfree_skb(skb);
- return NET_XMIT_DROP;
+ return NET_XMIT_BYPASS;
}
/*
I'd greatly appreciate any help solving the change problem.
Thanks!
George
Stephen Hemminger wrote:
> Loss was broken, patch sent.
>
> The following works now:
>
> # tc qdisc add dev eth1 root handle 1:0 netem loss 20%
>
> # tc qdisc add dev eth1 parent 1:1 handle 10: tbf \
> rate 256kbit buffer 1600 limit 3000
> # ping -f -c 1000 shell
>
> 1000 packets transmitted, 781 received, 21% packet loss, time 3214ms
> rtt min/avg/max/mdev = 0.187/0.398/3.763/0.730 ms, ipg/ewma 3.217/0.538 ms
>
> # tc qdisc chang dev eth1 handle 1: netem loss 1%
> # ping -f -c 1000 shell
>
> 1000 packets transmitted, 990 received, 1% packet loss, time 2922ms
> rtt min/avg/max/mdev = 0.187/2.739/3.298/0.789 ms, ipg/ewma 2.924/2.084 ms
>
>
>
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