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Re: nfe0 at gigE?

On Dec 31, 2009, at 2:32 PM, Jonathan A. Kollasch wrote:

> On Wed, Dec 30, 2009 at 11:39:10PM -0500, Steven Bellovin wrote:
>> I have a new ASUS motherboard with an on-board nfe0 controller.  It works 
>> (though it takes forever to autonegotiate); however, it seems to stop at 
>> 100M bps on a gigE switch.  It's not the cable; that same machine (running 
>> amd64/5.0.1) and cable work just fine at gigE speeds with a wm0 card in 
>> there.
>> Worth doing something about?  Or just leave wm0 in there and not worry about 
>> it?
> Maybe.
> What chipset, and more importantly, what PHY chip is involved here?

I should have posted more details.  

It's an M3N78-VM ASUS motherboard with the NVIDIA GeForce 8200 (MCP78S) 
chipset.    There's an external Realtek 8211CL-GR PHY.

Here are the relevant dmesg lines:

nfe0 at pci0 dev 10 function 0: vendor 0x10de product 0x0760 (rev. 0xa2)
LMAC: Picked IRQ 22 with weight 1
nfe0: interrupting at ioapic0 pin 22
nfe0: Ethernet address 00:26:18:e7:72:f2
rgephy0 at nfe0 phy 3: RTL8169S/8110S/8211 1000BASE-T media interface, rev. 2
rgephy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 
1000baseT-FDX, auto

                --Steve Bellovin,

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