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Message-id: <201001171311.19278.christian.samsel@rwth-aachen.de> Date: Sun, 17 Jan 2010 13:11:18 +0100 From: Christian Samsel <christian.samsel@...h-aachen.de> To: David Miller <davem@...emloft.net> Cc: shemminger@...tta.com, christian.samsel@...h-aachen.de, netdev@...r.kernel.org Subject: Re: [PATCH 1/2] improve netem reorder flexibility Am Samstag, 16. Januar 2010 10:46:54 schrieb David Miller: > > This is a really dangerous way to handle this. > > This means if you grow qopt, older kernels think that the > extended area is attributes. > > This also means that if you have new tools and send a qopt + > attributes, older kernels won't find the start of the attributes > correctly. It will miss the attributes entirely. True, i know now. > This is a complete mess, and we need to sort it out before we think > about changing the size of qopt at this point. > Just to state this clearly, by cleaning up the mess you mean switching netem completely over to netlink attributes? I think 4B3A5F84.4050603@...oo.it would also take advantage of that. The approach they choosed looks a bit wierd to me, cause someday we could end up having tc qdisc add dev eth0 root netem tc qdisc add dev eth0 root netem2 tc qdisc add dev eth0 root netem3 .. Christian -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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