[syslinux] core_udp_sendto: no mapping

[Gene Cumm]

On Mon, Nov 27, 2017 at 2:14 PM, Gene Cumm <gene.cumm at gmail.com> wrote:
> On Mon, Nov 27, 2017 at 12:07 PM, Joakim Tjernlund
> <Joakim.Tjernlund at infinera.com> wrote:
>> On Mon, 2017-11-27 at 08:42 -0500, Gene Cumm wrote:
>
>>> Bringing the discussion to the list.
>>>
>>> You stated you see the following on your Lenovo ThinkPad T470s with
>>> UEFI firmware N1WET41W (1.20 date: 10/17/2017):
>>>
>>>
>>>   core_udp_sendto: stalling on configure with no mapping
>>>
>>>
>>> OUI 54-E1-AD
>>>
>>> lspci -s 0:1f.6 -v
>>> 00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (4)
>>> I219-V (rev 21)
>>>         Subsystem: Lenovo Ethernet Connection (4) I219-V
>>>         Flags: bus master, fast devsel, latency 0, IRQ 125
>>>         Memory at dc200000 (32-bit, non-prefetchable) [size=128K]
>>>         Capabilities: [c8] Power Management version 3
>>>         Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
>>>         Capabilities: [e0] PCI Advanced Features
>>>         Kernel driver in use: e1000e
>>>         Kernel modules: e1000e
>>>
>>> This might be the only wired NIC but there's possibly multiple device
>>> handles to it and possibly a device handle to the wrong NIC
>>> (wireless).
>>>
>>> In your EFI shell (hopefully you have such an option):
>>>
>>> version > fs0:\efi-ver.txt
>>> dh -p Net > fs0:\efi-dh-net.txt
>>>
>>> Feel free to run it without the redirect (">") to see the results
>>> yourself.  The redirects would help if you can access the files so you
>>> don't need to manually transcribe the output.
>>>
>>> Here's some other UEFI Shell commands that may be of use:
>>>
>>> guid > fs0:\efi-guid.txt
>>>   or     alias > fs0:\efi-alias.txt
>>> dh > fs0:\efi-dh.txt
>>
>> Managed to install an EFI shell from here:
>>  https://github.com/tianocore/edk2/blob/master/ShellBinPkg/UefiShell/X64/Shell.efi
>>
>> and got a dh > dh.txt
>> I don't know what to do with this info so attaching it here.
>
> Ok.  Different GUID aliases.  Line 1381 says what I see as "Net" you
> likely see as "SimpleNetwork".  This handle has the necessary
> "UDPv4ServiceBinding" (I see as "UDPv4Sb").
>
> Thanks for the excellent data.  It's been a while since I looked at
> the handle search code to debug this.

Did you ever see a "disable UseDefaultAddress" message?  The code
should have printed those original messages dump the new message then
try again at doing the network transaction.

-- 
-Gene