Re: [PATCH net-next] netem: add ECN capability
From: Dave Taht <hidden>
Date: 2012-05-01 10:14:39
On Tue, May 1, 2012 at 2:28 AM, Hagen Paul Pfeifer [off-list ref] wrote:
Nice!
Applause as well! While this is something of a fork of this discussion, I would rather like to resurrect a variant of the old 'time in queue' patch... http://patchwork.ozlabs.org/patch/125329/ As best as I recall we'd run into trouble with combining things like netem and complex qdiscs, because we had basically overrun the size of the control block. And then there was a long discussion of all that and I forget if any conclusion was reached. An alternative to reducing the length of the control block was to find some way to leverage this sanely in the qdisc layer... #define HAVE_HW_TIME_STAMP /** * struct skb_shared_hwtstamps - hardware time stamps * @hwtstamp: hardware time stamp transformed into duration * since arbitrary point in time * @syststamp: hwtstamp transformed to system time base * -- Dave Täht SKYPE: davetaht US Tel: 1-239-829-5608 http://www.bufferbloat.net