netdev - Re: rtl8168e-vl dropping tftp ack

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Message-ID: <20130419061425.GA14843@electric-eye.fr.zoreil.com>
Date:	Fri, 19 Apr 2013 08:14:25 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	hayeswang <hayeswang@...ltek.com>
Cc:	"'Stefan Bader'" <stefan.bader@...onical.com>,
	netdev@...r.kernel.org, "'nic_swsd'" <nic_swsd@...ltek.com>
Subject: Re: rtl8168e-vl dropping tftp ack

hayeswang <hayeswang@...ltek.com> :
[...]
> I don't think the hw checksum is enabled, because there are many successful
> small packets before the failure.

Tentative rationale: the first missing packet (112 at 88.147981) is a 60
bytes one whose tail does not contain zeroes only. Previous 60 bytes
packets would exhibit no change of content if they were they generously
cut or paded with zeroes.

> However, I also want to know if any skb->len < 60 occurs so I think the
> checking should be included by the other case.

I don't get it: arp aside, the normal trace in the capture file exhibits no
sub-60 bytes packet. Could you reformulate ?

-- 
Ueimor
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