netdev - tg3 adapter losing link

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Message-ID: <20130503092846.GA5126@pcnci.linuxbox.cz>
Date:	Fri, 3 May 2013 11:28:46 +0200
From:	Nikola Ciprich <nikola.ciprich@...uxbox.cz>
To:	netdev@...r.kernel.org
Subject: tg3 adapter losing link - PM related?

Hello,

I'd like to ask about trouble I've got with new HP server: tg3 adapter keeps losing
link every few minutes:

Aug  3 03:58:02 atlovav1a kernel: [616741.147598] tg3 0000:03:00.0: eth0: Link is down
Aug  3 03:58:04 atlovav1a kernel: [616743.943456] tg3 0000:03:00.0: eth0: Link is up at 100 Mbps, full duplex
Aug  3 03:58:04 atlovav1a kernel: [616743.943598] tg3 0000:03:00.0: eth0: Flow control is on for TX and on for RX
Aug  3 03:58:04 atlovav1a kernel: [616743.943736] tg3 0000:03:00.0: eth0: EEE is enabled
Aug  3 04:14:29 atlovav1a kernel: [617727.980487] tg3 0000:03:00.0: eth0: Link is down
Aug  3 04:14:32 atlovav1a kernel: [617730.847245] tg3 0000:03:00.0: eth0: Link is up at 100 Mbps, full duplex
Aug  3 04:14:32 atlovav1a kernel: [617730.847387] tg3 0000:03:00.0: eth0: Flow control is on for TX and on for RX
Aug  3 04:14:32 atlovav1a kernel: [617730.847525] tg3 0000:03:00.0: eth0: EEE is enabled
Aug  3 06:47:13 atlovav1a kernel: [626885.452974] tg3 0000:03:00.0: eth0: Link is down
Aug  3 06:47:15 atlovav1a kernel: [626888.218702] tg3 0000:03:00.0: eth0: Link is up at 100 Mbps, full duplex
Aug  3 06:47:15 atlovav1a kernel: [626888.218844] tg3 0000:03:00.0: eth0: Flow control is on for TX and on for RX
Aug  3 06:47:15 atlovav1a kernel: [626888.218982] tg3 0000:03:00.0: eth0: EEE is enabled
Aug  3 06:51:44 atlovav1a kernel: [627156.293386] tg3 0000:03:00.0: eth0: Link is down
Aug  3 06:51:46 atlovav1a kernel: [627159.123347] tg3 0000:03:00.0: eth0: Link is up at 100 Mbps, full duplex
Aug  3 06:51:46 atlovav1a kernel: [627159.123491] tg3 0000:03:00.0: eth0: Flow control is on for TX and on for RX
Aug  3 06:51:46 atlovav1a kernel: [627159.123629] tg3 0000:03:00.0: eth0: EEE is enabled
Aug  3 07:13:10 atlovav1a kernel: [628441.722197] tg3 0000:03:00.0: eth0: Link is down
Aug  3 07:13:13 atlovav1a kernel: [628444.615548] tg3 0000:03:00.0: eth0: Link is up at 100 Mbps, full duplex
Aug  3 07:13:13 atlovav1a kernel: [628444.615690] tg3 0000:03:00.0: eth0: Flow control is on for TX and on for RX
Aug  3 07:13:13 atlovav1a kernel: [628444.615828] tg3 0000:03:00.0: eth0: EEE is enabled

I can't exclude the possibility it's switch problem, but I don't have access to box now and the
switch is not managed, so I'd like to try other ways first..

Could this somehow be power management related? I don't see what else PM-related could I disable
in the bios to disable this EEE stuff.. Didn't anyone met similar problem?

the system is running Centos6 with x86_64 3.0.76 kernel

thanks in advance for any reply

BR

nik


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Ing. Nikola CIPRICH
LinuxBox.cz, s.r.o.
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