[ipxe-devel] Dell C6220 lkrn MAC address issue / Intel I350

Robin Smidsrød robin at smidsrod.no
Sun Feb 24 09:03:47 GMT 2013


On 24.02.2013 02:55, Matthew Drobnak wrote:
> When chainloaded from pxelinux as the ipxe.lkrn module, the following
> occurs:
> 
> CLIENT MAC ADDR: 78 45 C4 F8 9C E3 GUID: 44454C4C 4C00 1034 8047
> B8C04F5A5631
> !PXE entry point found (we hope) at 97D2:0106 via plan A
> UNDI code segment at 97D2 len 5210
> UNDI data segment at 9197 len 63B0
> BOOTIF=01-78-45-c4-f8-9c-e3
> Loading ipxe.lkrn...ready.
> iPXE initialising devices...ok
> iPXE 1.0.0+ (71727) -- Open Source Network Boot Firmware -- http://ipxe.org
> DHCP (net0 78:45:c4:f8:9c:e4).................. Connection timed out
> (http://ipx
> e.org/4c106035)
> Could not configure net0: Connection timed out (http://ipxe.org/4c106035)
> DHCP (net1 78:45:c4:f8:9c:e7)..........
> 
> The MACs in this mode -
> 
> iPXE 1.0.0+ (b757) -- Open Source Network Boot Firmware -- http://ipxe.org
> iPXE> show net0/mac
> net0/mac:hex = 78:45:c4:f8:9c:e4
> iPXE> show net1/mac
> net1/mac:hex = 78:45:c4:f8:9c:e7
> iPXE> show net2/mac
> Could not find "net2/mac": No such device (http://ipxe.org/2c0c203b)
> 
> However, when loaded directly using undionly.kpxe:
> 
> Intel(R) Boot Agent GE v1.3.72
> CLIENT MAC ADDR: 78 45 C4 F8 9C E3 GUID: 44454C4C 4C00 1034 8047
> B8C04F5A5631
> PXE->EB: !PXE at 97D2:0070, entry point at 97D2:0106
> UNDI code segment 97D2:5210, data segment 9197:63B0 (582-628kB)
> UNDI device is PCI 02:00.0, type DIX+802.3
> 582kB free base memory after PXE unload
> iPXE initialising devices...ok
> iPXE 1.0.0+ (b757) -- Open Source Network Boot Firmware -- http://ipxe.org
> iPXE> show net0/mac
> net0/mac:hex = 78:45:c4:f8:9c:e3
>
> Note that the correct MACs end in "e3" and "e4". So, something
> strange is happening when using the "Linux kernel" version of iPXE. Only
> seems to be happening on I350 based cards. We have two other Dell "Cloud
> Series" servers, the C6100 and C2100 series, which have no issues at
> all. Hopefully this helps find this bug. Please let me know if you need
> any more information. Thanks. -Matt

This might be a bug in how the firmware initializes the MAC and how it
is calculated with multi-port NICs.

I'm not a core developer, but I believe build with DEBUG=intel would
help to shed some light on the issue.

Build your image like this:

make bin/ipxe.lkrn DEBUG=intel

Send us similar output to what you did above. As undionly.kpxe seems to
work, I see no need to look at that one anymore.

-- Robin



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