[Dnsmasq-discuss] dnsmasq proxydhcp and UEFI [PATCH]

[Jarek Polok]

Hello

Any chance to review this patch ? ...

Thanks

Jarek

On 03/10/2016 01:26 PM, Jarek Polok wrote:
> Hello
>
> On 03/04/2016 10:41 PM, Simon Kelley wrote:
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>> Didn't want to ignore this, so this is just to acknowledge your patch.
>> I need some more time to work back into PXE internals and undertsnad
>> exactly what's going on. Will return soon with questions.
>
> Sure, it would be nice to have this proxy DHCP problem solved
> in dnsmasq since now it cannot be used for PXE booting (only in
> proxy DHCP mode of course) of UEFI platforms.
>
> In mean time I've been able to test the patch on ~ 30 more hardware
> models: BIOS/UEFI (including UEFI on arm64) and it seems to
> work as expected.
>
>
> Best Regards
>
> Jarek
>
>>
>>
>>
>> Cheers,
>>
>> Simon.
>>
>>
>>
>> On 02/03/16 09:17, Jarek Polok wrote:
>>> Hello
>>>
>>> I've seen in list mail archives that the problem of UEFI systems
>>> not booting while using PXE boot menu has been discussed in the
>>> past already:
>>>
>>> http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2015q4/010007
>> .html
>>>
>>>   and a patch was proposed.
>>>
>>> I tried that patch but for some UEFI firmwares it did not work for
>>> me.
>>>
>>> Tracing reply proxyDHCP packet from a Microsoft WDS server I was
>>> able to change the patch a little and it seems to make proxyDHCP
>>> work for all clients I've been able to test with (4 different
>>> hardware models and qemu-kvm with OVMF (Tianocore) firmware).
>>>
>>> In addition to filling in siaddr and bootfile in the reply header
>>> my version fills also sname then avoids adding option 43 (some
>>> clients did not boot without sname set..)
>>>
>>> This is how WDS replies on 4011 for PXE requests for all BIOS/EFI
>>> clients ..
>>>
>>> (WDS also adds option 252, filled with text representation of data
>>> possibly needed by WDS bootloader , seems to contain architecture
>>> path, some (G)UUID and BCD location ?)
>>>
>>> In the attachment you will find my version of the patch, adding
>>> 'pxe-menu-skip=<CSA>' option which makes dnsmasq to 'shortcut' boot
>>> process sending back to pxe client first matching (by tag and CSA)
>>> pxe-service when acting in proxy-DHCP mode.
>>>
>>> Dear maintainer: would you please consider adding this patch to
>>> dnsmasq ?
>>>
>>>
>>> Best Regards
>>>
>>> Jarek
>>>
>>> __ ------------------------------------------------------- _
>>> Jaroslaw_Polok ___________________ CERN - IT/CM/LCS _ _
>>> http://cern.ch/~jpolok ________ tel_+41_22_767_1834 _
>>> ______________________________________+41_75_411_9487 _
>>>
>>>
>>>
>>>
>>> _______________________________________________ Dnsmasq-discuss
>>> mailing list Dnsmasq-discuss at lists.thekelleys.org.uk
>>> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
>>>
>>
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>
>


-- 
__
-------------------------------------------------------
_ Jaroslaw_Polok ___________________ CERN - IT/CM/LCS _
_ http://cern.ch/~jpolok ________ tel_+41_22_767_1834 _
______________________________________+41_75_411_9487 _