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

[S. Schauenburg]

On Mon, Jun 22, 2015 at 12:50 PM, Gene Cumm <gene.cumm at gmail.com> wrote:

> On Mon, Jun 22, 2015 at 6:03 AM, S. Schauenburg <s.schauenburg at gmail.com>
> wrote:
> > 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.
>
> But you still see the "My IP is 0.0.0.0"?  The firmware version change
> is definitely useful.  Without this, I would have considered the
> stalling messages as expected.
>

Yes, I still see "My IP is 0.0.0.0". Only the core_udp_sendto lines
disappeared.

> Hardware used: HP ProLiant DL380 Gen9
> > NIC being used: NIC1 (not NIC0, since that's connected to a different
> > network)
>
> This is definitely useful and I suspect the major reason for the issue.


I assumed as much. Good to hear you have a hypothesis :-)


> > 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.
>
> Excellent!  I figured that if I didn't have a solution, the temporary
> extra Print() calls should at least provide more details, which they
> did.  I was surprised to see that your server returns 8 protocol
> handles (likely IPv4 and IPv6 for each of the 4 NIC ports).


Indeed, IPv4 and IPv6 are enabled for all 4 NIC's, yet only IPv4 is
actively being used.


> >> 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
>
> I'd guess that the ARP packets are being seen on NIC0 and not NIC1.
> I'm hoping to have another patch this week.
>
> >> 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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> >>
> >>
> >
>
> --
> -Gene
>