[syslinux] EFI: PXE: "My IP is 0.0.0.0"

[S. Schauenburg]

Ady2 suggested to me on IRC to add additional information to the ML.

With BIOS P89 v1.32 (03/05/2015) I saw errors from core_udp_sendto:
Getting cached packet
My IP is 0.0.0.0
core_udp_sendto: stalling on configure with no mapping
core_udp_sendto: stalling on configure with no mapping
core_udp_sendto: stalling on configure with no mapping
core_udp_sendto: stalling on configure with no mapping
core_udp_sendto: stalling on configure with no mapping

With BIOS P89 v1.40 (05/06/2015) I don't see any errors from
core_udp_sendto anymore.

Hardware used: HP ProLiant DL380 Gen9
NIC being used: NIC1 (not NIC0, since that's connected to a different
network)

Greetings,



Sebastian

On Mon, Jun 22, 2015 at 8:54 AM, S. Schauenburg <s.schauenburg at gmail.com>
wrote:

> Hello Gene,
>
> thanks a lot for your patch! It doesn't work yet, but I have some more
> information.
>
> Before the patch, the boot sequence ended with the following:
>   NBP file download successfully.
> Getting cached packet
> My IP is 0.0.0.0
>
> After the patch it ended with the following (note that the IP is the same
> as the Station IP address):
>   NBP file download successfully.
> LibLocateHandle returned nr 8
> Handle [0] gave -3 00000000
> Handle [1] gave -3 00000000
> Handle [2] gave 0 0ad402a7
> Getting cached packet
> My IP is 10.212.2.167
>
> Greetings,
>
>
> Sebastian
>
> On Sun, Jun 21, 2015 at 8:48 PM, Gene Cumm via Syslinux <
> syslinux at zytor.com> wrote:
>
>> On Sat, Jun 20, 2015 at 5:09 PM, Gene Cumm <gene.cumm at gmail.com> wrote:
>> > Starting a new thread for the moment and BCCing the two reporters of
>> the issue.
>> >
>> > Looking over the code, I think I finally see why we get junk data from
>> > the PXE base.  If we tell the PXE base that a buffer is 0 bytes long,
>> > we should expect junk/null data.
>> >
>> > I'm hoping to have a patch for testing over the weekend.  If either of
>> > you would rather start a bug on the bugzilla, feel free.
>>
>> Attached are a patch and a limited set of test binaries.  Patch is
>> relative to 38e861eb.  This should give more indication to the EFI PXE
>> "My IP is 0.0.0.0" issue.
>>
>> --
>> -Gene
>>
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>
>