linux-kernel - Re: [patch 1/6] 8139too: force media setting cleanup

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Message-Id: <1181739176.23954.23.camel@melchior>
Date:	Wed, 13 Jun 2007 21:52:56 +0900
From:	Kyuma Ohta <whatisthis@...m.home.ne.jp>
To:	Jeff Garzik <jeff@...zik.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:	akpm@...ux-foundation.org, leewkb@...oo.com,
	netdev <netdev@...r.kernel.org>
Subject: Re: [patch 1/6] 8139too: force media setting cleanup

Hi,
I was testing 2.6.22-rc4 from yesterday,
but communication speed  of 8139 side is very slower 
than 2.6.21.* (less than 10kbytes/sec at  
100MBPS,FULL-DUPLEX).
I was not test from 2.6.22-rc ,yesterday I started to test 2.6.22-rc.

So, I *must* set HALF-DUPLEX to 8139 side below:
ethtool -s ethx speed 100 duplex half autoneg on 
*x is number of 8139 assigned from udev.

So,Pls.apply this patch to upstream,and I test this too.

Best Regards,
Ohta.

Appendix information:
archtecture: x86_64
Main Board : Gigabyte GA-M69P-M3 (rev.1.0?)
MPU: Athlon 64x2 4600+ (Not overclocked)
Chipset : nVidia nForce430+GForce 6150 Complex chip
Memory : PC-5300 2GB (w/shared graphix memory)
Ether: nForce430 (within complex chip,using forcedeth)
             Realtec 8139C (+?) (on PCI Slot,using 8139too)
OS: Debian GNU/Linux "sid" (after "etch",using glibc2.5).

On 2007-05-24 (Thu) 17:36 -0400 , Jeff Garzik Wrote:
> akpm@...ux-foundation.org wrote:
> > From: Bernard Lee <leewkb@...oo.com>
> > 
> > Setting bit 4 & 5 alone in 8139too module media option does not really
> > force 100Mbps full-duplex mode.  When media option bit 0-3 is cleared,
> > 8139too module does not force media setting.  Therefore, bit 0-3 requires
> > to be set for bit 4 & 5 to take effect.  The hidden bit 0-3 setting is not
> > stated in module description.
> > 
> > It can be fixed by changing rtl8139_private structure default_port bitfield
> > from 4-bit to 6-bit.
> > 
> > Besides, module media bit 9 is a duplicate of bit 4 (full-duplex).  It is
> > suggested that bit 9 is freed.  A remark is added to module description
> > that bit 0 can be used to force setting.  It helps to clarify 10Mbps
> > half-duplex mode.
> > 
> > Signed-off-by: Bernard Lee <leewkb@...oo.com>
> > Cc: Jeff Garzik <jeff@...zik.org>
> > Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
> > ---
> > 
> >  drivers/net/8139too.c |    8 ++++----
> >  1 files changed, 4 insertions(+), 4 deletions(-)
> 
> (re-replying, just to refresh everybody on the status)
> 
> The status of this patch is HOLD, and has been for months.
> 
> AFAICS this is a behavior change that differs from other Becker-derived 
> drivers.  I would suggest looking at other drivers.
> 
> Furthermore, people should be using ethtool to set media.  Rather than 
> changing the behavior of this module parameter to be non-standard, I 
> feel it is better to (a) leave it as is or (b) remove it completely.
> 
> 	Jeff



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