linux-kernel - Re: igb and bnx2: "NETDEV WATCHDOG: transmit queue timed out" when skb has huge linear buffer

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Message-ID: <1391114048.4804.2.camel@LTIRV-MCHAN1.corp.ad.broadcom.com>
Date:	Thu, 30 Jan 2014 12:34:08 -0800
From:	Michael Chan <mchan@...adcom.com>
To:	Zoltan Kiss <zoltan.kiss@...aman.hu>
CC:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Bruce Allan <bruce.w.allan@...el.com>,
	Carolyn Wyborny <carolyn.wyborny@...el.com>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	Greg Rose <gregory.v.rose@...el.com>,
	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
	Alex Duyck <alexander.h.duyck@...el.com>,
	John Ronciak <john.ronciak@...el.com>,
	Tushar Dave <tushar.n.dave@...el.com>,
	Akeem G Abodunrin <akeem.g.abodunrin@...el.com>,
	"David S. Miller" <davem@...emloft.net>,
	<e1000-devel@...ts.sourceforge.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	"xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>
Subject: Re: igb and bnx2: "NETDEV WATCHDOG: transmit queue timed out" when
 skb has huge linear buffer

On Thu, 2014-01-30 at 19:08 +0000, Zoltan Kiss wrote:
> I've experienced some queue timeout problems mentioned in the subject 
> with igb and bnx2 cards. 

Please provide the full tx timeout dmesg.  bnx2 dumps some diagnostic
information during tx timeout that may be useful.  Thanks.

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