Re: 2.6.17-rc4: netfilter LOG messages truncated via NETCONSOLE

From: Patrick McHardy
Date: Wed May 31 2006 - 13:45:37 EST


Frank van Maarseveen wrote:
> On Wed, May 31, 2006 at 06:36:35PM +0200, Patrick McHardy wrote:
>
>>The messages might get dropped when the output queue is full.
>>Does one of the drop counters shown by "ip -s link list"
>>and "tc -s -d qdisc show" increase (the other counts might also
>>give some clues)? Otherwise please apply the attached patch
>>(should fix tcpdump, last patch was incomplete) and post a dump.
>
>
> No visible improvement with the new patch.

Does this mean tcpdump doesn't show any packets?

> ip -s link doesn't show any
> dropped packets so far with any patch and I don't use traffic control
> that I'm aware of. But I'm not sure what to make of "tc" output, maybe
> because CONFIG_SHAPER is not set:
>
> # tc -s -d qdisc show
> RTNETLINK answers: Invalid argument
> Dump terminated

Thats because you're missing CONFIG_NET_SCHED. Please enable it and
try the tc command again, without it we can't see whether the qdisc
(which is present even without CONFIG_NET_SCHED) just dropped the
packets.
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