netdev - Re: [PATCH 0/3] igb: XDP/ZC follow up

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Message-ID: <Z6rAuqYnIzQH_gtN@LQ3V64L9R2>
Date: Mon, 10 Feb 2025 19:15:06 -0800
From: Joe Damato <jdamato@...tly.com>
To: Kurt Kanzenbach <kurt@...utronix.de>
Cc: Tony Nguyen <anthony.l.nguyen@...el.com>,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org
Subject: Re: [PATCH 0/3] igb: XDP/ZC follow up

On Mon, Feb 10, 2025 at 10:19:34AM +0100, Kurt Kanzenbach wrote:
> This is a follow up for the igb XDP/ZC implementation. The first two 
> patches link the IRQs and queues to NAPI instances. This is required to 
> bring back the XDP/ZC busy polling support. The last patch removes 
> undesired IRQs (injected via igb watchdog) while busy polling with 
> napi_defer_hard_irqs and gro_flush_timeout set.

You may want to use netif_napi_add_config to enable persistent NAPI
config, btw. This makes writing userland programs based on
SO_INCOMING_NAPI_ID much easier.

See also:

https://lore.kernel.org/netdev/20250208012822.34327-1-jdamato@fastly.com/