netdev - loop on reset adapter with ixgbe

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Message-ID: <20131120182524.GC16953@gandi.net>
Date:	Wed, 20 Nov 2013 19:25:24 +0100
From:	William Dauchy <william@...di.net>
To:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Cc:	Jacob Keller <jacob.e.keller@...el.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	Emil Tantilov <emil.s.tantilov@...el.com>,
	Leonardo Potenza <leonardo.potenza@...el.com>
Subject: loop on reset adapter with ixgbe

Hi,

On some machines with a network card named
"Intel Corporation 82599EB 10-Gigabit SFI/SFP+"

At boot time, I'm getting an infinite loop showing these messages:

ixgbe 0000:03:00.0 eth0: initiating reset to clear Tx work after link loss
ixgbe 0000:03:00.0 eth0: Reset adapter
ixgbe 0000:03:00.0 eth0: detected SFP+: 3

ethtool info:
driver: ixgbe
version: 3.8.21-k
firmware-version: 0x00000000

I'm using the last linux stable branch v3.10.x.

I need to unplug/plug the network/cable (a twinax cable) several times to
stabilize the situation and get some network.
I was wondering if I should consider this as a driver/firmware bug or if I
should look for a physical issue (I changed the physical cable several times).
Or do you need some more info to help understand this issue?

Best regards,
-- 
William

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