grub2 tftp bug

[pradeep]

Dear Sir ,

I have been trying to emulate pxe boot on qemu using uefi BIOS.
I have  setup a tap0 interface for qemu to connect to the guest Ubuntu.

qemu->tap0->guest (dhcp,tftp servers) .

But for some reason I am unable to fetch kernel and initrd images from
grubx64.efi.
To explain the whole process in steps :-

-> Qemu starts and loads the UEFI Bios
-> UEFI BIos does dhcp and fethches grubx64.efi
->grubx64 is unable to fetch the kernel image and initrd .

I went through the grub source code to locate the error , and I seem to be
crashing in efinet.c in the function send_card_buffer(), the exact crash
point in the function is
if(limit_time < grub_get_time_ms())
{
   return grub_error;
}

Could you please help ?


Thanks
Pradeep
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