netdev - Re: [PATCH] pktgen: Clone skb to avoid corruption of skbs in ndo_start

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Date:	Wed, 20 Jul 2011 06:24:15 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Neil Horman <nhorman@...driver.com>
Cc:	Ben Greear <greearb@...delatech.com>,
	Jiri Pirko <jpirko@...hat.com>, netdev@...r.kernel.org,
	Alexey Dobriyan <adobriyan@...il.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] pktgen: Clone skb to avoid corruption of skbs in
 ndo_start_xmit methods

Le mardi 19 juillet 2011 à 22:07 -0400, Neil Horman a écrit :
> > 
> I think this is a good idea.  It lets pktgen dynamically make the clone/share
> decision dynamically and only impacts performance for those systems.
> 

Just let pktgen refuse to use clone_skb command for these devices.

At that point, an userland application is going to be faster and more
flexible than pktgen.

So when I said "remove pktgen" from distro it was not a joke.
Maybe its time to admit pktgen has to be removed from kernel sources.

$ wc net/core/pktgen.c
 3788 10881 92771 net/core/pktgen.c

Hmmm, 3788 lines, patched 180 times for a thing that only sends UDP
frames...



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