netdev - Re: tg3 driver not advertising 1000mbit

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Message-ID: <4A32D3DB.30703@dupondje.be>
Date:	Sat, 13 Jun 2009 00:16:59 +0200
From:	Jean-Louis Dupond <info@...ondje.be>
To:	Michael Chan <mchan@...adcom.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Matthew Carlson <mcarlson@...adcom.com>,
	David Christensen <davidch@...adcom.com>
Subject: Re: tg3 driver not advertising 1000mbit

I surely tried other cables. But its surely not the cable because:
1) We tried other cables
2) After a reboot it works, or after a mii-tool -R
3) We have this issue on like +100 servers :(

The servers are connected on a Dell PowerConnect 6248 switch.

Sincerely

Michael Chan schreef:
> On Fri, 2009-06-12 at 14:51 -0700, Jean-Louis Dupond wrote:
>> Hello!
>>
>> Here is a mii-tool -vvv on a box that doesn't advertise gbit speeds! It 
>> just doesn't advertise gbit @ random, sometimes it does, sometimes not! 
>> Without any logic in it!
>>
>> # mii-tool  -vvv
>> Using SIOCGMIIPHY=0x8947
>> eth0: link ok
>>     registers for MII PHY 1:
>>       1000 794d 0143 bed0 05e1 0000 0064 2001
>>       0000 0300 0000 0000 0000 0000 0000 3000
> 
> Register 1 shows that autoneg did not complete (bit 5 is not set).
> The tg3 device has advertised 10/100/1000 in register 4 and register 9,
> but registers 5 and 0xa (link partner's advertisement registers are 0).
> 
> When it works, these registers should look very different.
> 
> Have you tried other cables?  What is the link partner?
> 
>>       0000 0101 0000 0000 0000 0000 0000 0000
>>       7477 0104 0000 ffff 2801 0000 8000 0000
>>     product info: vendor 00:50:ef, model 45 rev 0
>>     basic mode:   autonegotiation enabled
>>     basic status: link ok
>>     capabilities: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD
>> 10baseT-FD 10baseT-HD
>>     advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-
>> control
>>
>> # dmesg | grep tg3
>> [    3.331702] tg3.c:v3.92.1 (June 9, 2008)
>> [   18.238654] tg3: eth0: Link is up at 10 Mbps, half duplex.
>> [   18.238654] tg3: eth0: Flow control is off for TX and off for RX.
>>
>>
> 
> 
> 
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