Re: [PATCH] sky2: receive dma mapping error handling

[Michael Breuer]

On 02/03/2010 11:56 AM, Stephen Hemminger wrote:
> On Wed, 03 Feb 2010 11:47:19 -0500
> Michael Breuer<mbreuer@xxxxxxxxxx>  wrote:
>
>    
> > Tracked this down. The status being returned is 0x3c0080 - good flow
> > control packets. Nothing is actually being dropped (confirmed by packet
> > trace on switch compared with packet trace on server).
> >
> > I whipped up a trivial patch to not count these as dropped packets and
> > will post to netdev.
> >
> > I'm not really sure what the driver should be doing in this case, but
> > resubmit seems to work.
> >      
> Looks like a flow control negotiation issue. You probably turned off
> flow control on the Linux side, but the switch is still doing flow
> control.
>
>    
According to the driver:
Feb  3 12:03:02 mail kernel: sky2 eth0: Link is up at 1000 Mbps, full 
duplex, flow control both

So if the rx flow control packet status is due to flow control being 
disabled, then there's a different issue.


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