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Date: Tue, 28 Oct 2025 15:55:58 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Fernando Fernandez Mancera <fmancera@suse.de>
Cc: bpf@vger.kernel.org, netdev@vger.kernel.org, magnus.karlsson@intel.com,
 maciej.fijalkowski@intel.com, sdf@fomichev.me, kerneljasonxing@gmail.com,
 fw@strlen.de
Subject: Re: [PATCH 1/2 bpf v2] xdp: add XDP extension to skb
Message-ID: <20251028155558.7c13b033@kernel.org>
In-Reply-To: <20251028183032.5350-1-fmancera@suse.de>
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On Tue, 28 Oct 2025 19:30:31 +0100 Fernando Fernandez Mancera wrote:
> This patch adds a new skb extension for XDP representing the number of
> cq descriptors and a linked list of umem addresses.
> 
> This is going to be used from the xsk skb destructor to put the umem
> addresses onto pool's completion queue.

This increases the size of skb extensions and burns a bit in every skb.
Unacceptable for a fallback / slowpath.