netdev - Re: [PATCH net-next-2.6] ip: Report qdisc packet drops

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Date:	Wed, 2 Sep 2009 14:37:59 -0500 (CDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
cc:	David Miller <davem@...emloft.net>, sri@...ibm.com,
	dlstevens@...ibm.com, netdev@...r.kernel.org,
	niv@...ux.vnet.ibm.com, mtk.manpages@...il.com
Subject: Re: [PATCH net-next-2.6] ip: Report qdisc packet drops

The patch is smaller if you remove the handling of recverr completely from
ip_push_pending_frames() and return NET_RX_DROP etc. Two of the callers
never even inspect the return code. For them this is useless processing.

The others could handle the processing of recverr on their own. Doing so
voids adding code to ip_push_pending_frames() which is latency critical
and also avoids changing the calling conventions.

I have a draft here from our earlier disucssions but its not as
comprehensive as yours.

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