Re: Network Stack Budgeting

["Tomas Pilar (tpilar)" <tpilar@solarflare.com>]

On 29/01/2019 13:42, Laszlo Ersek wrote:
> On 01/29/19 11:54, Tomas Pilar (tpilar) wrote:
>>> Why TFTP client just pull one packet per second? I think it’s not
>>> correct and it could use the poll() function to accelerate the
>>> receive. Why you trying to solve a TFTP layer problem in SNP layer?
>>> It breaks the design principle of network layer model.
>> Yes, I appreciate the principle. However, in practice we don't get to
>> sell adapters that do not PXE boot and it's pointless to argue with
>> customers that they have a rubbish TFTP client implementation. So we
>> put in workarounds into the driver.
> Actually, I think this is the core principle behind the UEFI forum, and
> the UEFI spec. You shouldn't have to implement bug compat hacks. The era
> when an add-on card would work on some platform's BIOS but not on
> another's should be left behind. You have a spec to point at, and the
> platform in question was likely certified against that spec in some form
> (possibly self-certified).
>
> Sp I think it would be reasonable to contact the platform vendor, and to
> direct your own customers to that ticket too. If you have a
> representative on the USWG, it might make sense to raise the issue there
> as well, especially if the issue is wide-spread and affects multiple
> platform vendors. The UEFI spec targets practical, common use cases, and
> this looks like one.
>
> (When a RH customer or partner reports e.g. a RHEL kernel issue to us,
> and we determine it is a problem in the firmware, we absolutely talk to
> the platform vendor, and sometimes to standards bodies too. We also
> advise customers on the applications that they run on RHEL, if they ask
> and/or care to listen. Plus, some high-profile applications and RHEL are
> explicitly certified against each other.)
>
> ... I don't mean to intrude of course; I'm sorry if I came through like
> that.
Thanks, this is some good food for thought. I certainly appreciate the progress we've made since the old EFI days.

Tom

>
> Thanks
> Laszlo