netdev - Re: [net-next PATCH v2 0/4] Extend action skbedit to RX queue mapping

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Message-ID: <20220922052908.4b5197d9@kernel.org>
Date:   Thu, 22 Sep 2022 05:29:08 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     "Nambiar, Amritha" <amritha.nambiar@...el.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "alexander.duyck@...il.com" <alexander.duyck@...il.com>,
        "jhs@...atatu.com" <jhs@...atatu.com>,
        "jiri@...nulli.us" <jiri@...nulli.us>,
        "xiyou.wangcong@...il.com" <xiyou.wangcong@...il.com>,
        "Gomes, Vinicius" <vinicius.gomes@...el.com>,
        "Samudrala, Sridhar" <sridhar.samudrala@...el.com>
Subject: Re: [net-next PATCH v2 0/4] Extend action skbedit to RX queue
 mapping

On Thu, 22 Sep 2022 08:19:07 +0000 Nambiar, Amritha wrote:
> > Alex pointed out that it'd be worth documenting the priorities of
> > aRFS vs this thing, which one will be used if HW matches both.  
> 
> Sure, I will document the priorities of aRFS and TC filter selecting
> the Rx queue. On Intel E810 devices, the TC filter selecting Rx queue
> has higher priority over aRFS (Flow director filter) if both the filters
> are matched.

Is it configurable? :S If we think about RSS context selection we'd
expect the context to be selected based on for example the IPv6 daddr 
of the container but we still want aRFS to select the exact queue...
Is there a counterargument for giving the flow director higher prio?