[edk2-devel] reg: HTTP Boot failure

[edk2-devel] reg: HTTP Boot failure

[Sivaraman Nainar via groups.io]

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Hello:

In the environment of PXE and Http server setup configured in same Linux machine HTTP Boot is gettin failed. If the PXE Server and HTTP Server configured in two different machines then the boot is fine.


Failure Test case:

1.Select PXE IPv4/6 to boot

2.Booted into Grub Boot loader File successfully, then exit back to setup from grub boot loader

3.select HTTP IPv4/6 to boot -> HTTP boot FAIL



Root Cause: When Pxe boot is successfully booted to grub, All network drivers are stopped,

And when we select Http Boot , All network drivers are getting started again, but Dhcp->start interface is failed with EFI_NO_MAPPING



As EFI_NO_MAPPING is reported from Dhcp->start ,we have suspected link local is not updated properly. Hence added few seconds delay before starting http boot and Http Boot is working properly.



Pass test case:

Select HTTP IPv4/6 to boot into Grub boot loader file, then exit back to setup from grub boot loader console

then -> select PXE IPv4/6 to boot -> PXE can boot PASS



When http boot is successfully booted to grub, Network Driver are not stopped.  Since the drivers are not stopped,  when we select Pxe Boot it is working as all network drivers configured the instance properly.



For this test case #1 is there any recommendation to address the issue generically without havin hardcoded delay before HTTP Boot?


Thanks

Siva

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