[syslinux] syslinux.efi pxeboot across multiple subnets

[Gene Cumm]

On Sun, Nov 24, 2013 at 6:29 AM, Gene Cumm <gene.cumm at gmail.com> wrote:
> On Wed, Nov 13, 2013 at 4:26 PM, Jason Matthews
> <jason.david.matthews at gmail.com> wrote:
>>>I played around with the udp4_cb function and it looked like it was coming
>> back with token->Status == 512, which (if I read the spec right) isn't a
>> valid value. I'm not sure what is coming through on that. I changed the if
>> to if (token->Event) { cb_status = 0; }
>>
>> Looks like the same thing with tcp.c. After I changed that callback,
>> everything went through and I go into the OS install.
>>
>> But, if I go back to 1 subnet after those changes, it errors out with
>> Invalid Parameter when attempting to send the first packet.
>>
>> (Sorry for the top posting.)
>
> I just started examining this and find it odd that the core_udp_recv()
> doesn't zalloc() its token while core_udp_send()/core_udp_sendto() do.
>  All three are a part of commit fe283b78 by Matt Fleming.  Should this
> be made into a zalloc() rather than pushing it into the stack?  It'd
> seem like it could run some stack issues plus there's no guarantee
> what's in it (unless there's some stack trickery just before the calls
> to core_udp_recv() )

Aside from the core_udp_recv() question, I've got another patch but
just need to clean it a little.

-- 
-Gene