Re: [PATCH 4/4] Allow protocol to be separated from host with a semicolon

[Michael Chang]

On Tue, Jan 24, 2017 at 12:50:37PM -0800, Matthew Garrett wrote:
> On Mon, Jan 23, 2017 at 8:02 PM, Andrei Borzenkov <address@hidden> wrote:
> > 24.01.2017 03:36, Matthew Garrett пишет:
> >> Some DHCP servers (such as dnsmasq) tokenise parameters with commas, making
> >> it impossible to pass boot files with commas in them. Allow using a
> >
> > grub_net_open() operates on devices, not files. Please give more details
> > about your problem.
> 
> The DHCP server will return a string in the boot_file field. If you
> want to indicate that this file should be obtained over http, the
> easiest way to handle this is to provide a boot file in the form
> (http,host)filename. Unfortunately dnsmasq uses commas to tokenise its
> configuration parameters and there appears to be no way to override
> that, which makes it impossible to provide a boot file in this form.
> Allowing the use of an alternative character avoids this problem.

To my understanding, you can (and have to) use the url form in boot-file and
specify vendor-class-identifier to "HTTPClient" to let the UEFI firmware knows
this as a response to HTTP boot request and handle that boot-file accordingly,
then continue with that url loaded and run as NBP.

Here the article provide some examples.

https://en.opensuse.org/UEFI_HTTPBoot_with_OVMF

I suppose you may be running the bootp for setting up the client network
interface and wanted it to have work with http hosting the os images in some
way ? Anyway the config seems not to work with what UEFI prosposed for HTTP
Boot and I'd suggest to check that first.

Thanks,
Michael

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