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Date: Thu, 18 Jan 2024 08:37:30 -0800
From: Jakub Kicinski <kuba@kernel.org>
To: Toke =?UTF-8?B?SMO4aWxhbmQtSsO4cmdlbnNlbg==?= <toke@redhat.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>, Alexei Starovoitov
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Subject: Re: [PATCH net-next 15/24] net: Use nested-BH locking for XDP
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On Thu, 18 Jan 2024 12:51:18 +0100 Toke H=C3=B8iland-J=C3=B8rgensen wrote:
> I do agree that conceptually it makes a lot of sense to encapsulate the
> budget like this so drivers don't have to do all this state tracking
> themselves. It does appear that drivers are doing different things with
> the budget as it is today, though. For instance, the intel drivers seem
> to divide the budget over all the enabled RX rings(?); so I'm wondering
> if it'll be possible to unify drivers around a more opaque NAPI poll API?

We can come up with APIs which would cater to multi-queue cases.
Bigger question is what is the sensible polling strategy for those,
just dividing the budget seems, hm, crude.