netdev - Re: [Bugme-new] [Bug 10322] New: e1000 is not auto-negotiating to 1GB full duplex speed even there is 1GB speed availble

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Date:	Tue, 25 Mar 2008 12:36:54 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	lqs_xting@...u.com
Cc:	bugme-daemon@...zilla.kernel.org, netdev@...r.kernel.org,
	Auke Kok <auke-jan.h.kok@...el.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	"Ronciak, John" <john.ronciak@...el.com>
Subject: Re: [Bugme-new] [Bug 10322] New: e1000 is not auto-negotiating to
 1GB full duplex speed even there is 1GB speed availble


(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).


On Tue, 25 Mar 2008 07:29:56 -0700 (PDT)
bugme-daemon@...zilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=10322
> 
>            Summary: e1000 is not auto-negotiating to 1GB full duplex speed
>                     even there is 1GB speed availble
>            Product: Drivers
>            Version: 2.5
>      KernelVersion: 2.6.23
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Network
>         AssignedTo: jgarzik@...ox.com
>         ReportedBy: lqs_xting@...u.com
>                 CC: lqs_xting@...u.com
> 
> 
> Latest working kernel version: 2.6.23.9
> Earliest failing kernel version: 2.6.21

err, according to this, we had the bug in 2.6.21 and then fixed it in
2.6.23.9, so this is a report of an already fixed bug ;)

Can you please clarify the version numbers here?

> Distribution:
> Hardware Environment: e1000 with 82571 chip
> Software Environment: CentOS 4.5
> Problem Description:
> We have a machine with the e1000(82571) driver which could not detect the
> correct link mode with a switch supports 1000 Mbps/s. I just find that the
> ethtool can't support 10 Mbps/s Half and 1000 Mbps/s Full mode. Therefore, the
> e1000 code should be fixed by add all modes at the 216 lines in
> e1000_ethtool.c. It is as follow:
> 
> hw->autoneg_advertised |= ecmd->advertising |
>                          ADVERTISED_TP |
>                          ADVERTISED_Autoneg;
> 
> 
> Steps to reproduce:
> 1. Add a entry ' ETHTOOL_OPTS="autoneg on" ' in the
> /etc/sysconfig/network-scripts/ifcfg-eth0;
> 2. Run '/etc/init.d/network restart';
> 3. Run 'ethtool eth0', it displays the speed is 100 Mbps/s. But the real link
> mode should be 1000 Mbps/s

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