netdev - Re: r8169 OOPSen in rtl

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Message-ID: <20130905230930.GA25360@electric-eye.fr.zoreil.com>
Date:	Fri, 6 Sep 2013 01:09:30 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	nic_swsd@...ltek.com, netdev@...r.kernel.org
Subject: Re: r8169 OOPSen in rtl_rx

Peter Zijlstra <peterz@...radead.org> :
[...]
> Yay, it triggered..

Bingo.

Can you display the whole descriptor entry (opts1 and opts2) and its
index (cur_rx) when abnormal packets are detected ?
We can always check the packet size but I'd welcome some more specific
pattern in the remaining bits of the descriptor.

Btw, you may try to revert aee77e4accbeb2c86b1d294cd84fec4a12dde3bd
("r8169: use unlimited DMA burst for TX") and see if it changes the
Rx / Tx balance. It would only be a bandaid though.

-- 
Ueimor
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