Subject: Re: [PATCH net-next 3/3] net: create and use NAPI version of tc_skb_ext_alloc()

From: Jakub Kicinski <[email-masked]>
Date: Wed, 15 Feb 2023 09:35:05 -0800

On Wed, 15 Feb 2023 11:50:55 -0500 Jamal Hadi Salim wrote:
> Dumb question: Would this work with a consumer of the metadata past
> RPS stage? didnt look closely but assumed per cpu skb_ext because of
> the napi context - which will require a per cpu pointer to fetch it
> later.

The cache is just for allocation, specifically for the case where
driver allocates the skb and it's quickly coalesced by GRO.
The lifetime of the allocated object is not changed.