netdev - Re: [PATCH net-next] xsk: skip validating skb list in xmit path

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Message-ID: <20250715161911.32272364@kernel.org>
Date: Tue, 15 Jul 2025 16:19:11 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Jason Xing <kerneljasonxing@...il.com>
Cc: Stanislav Fomichev <stfomichev@...il.com>, davem@...emloft.net,
 edumazet@...gle.com, pabeni@...hat.com, bjorn@...nel.org,
 magnus.karlsson@...el.com, maciej.fijalkowski@...el.com,
 jonathan.lemon@...il.com, sdf@...ichev.me, ast@...nel.org,
 daniel@...earbox.net, hawk@...nel.org, john.fastabend@...il.com,
 joe@...a.to, willemdebruijn.kernel@...il.com, bpf@...r.kernel.org,
 netdev@...r.kernel.org, Jason Xing <kernelxing@...cent.com>
Subject: Re: [PATCH net-next] xsk: skip validating skb list in xmit path

On Tue, 15 Jul 2025 07:53:19 +0800 Jason Xing wrote:
> > Although, again, if you care about performance, why not use zerocopy
> > mode?  
> 
> I attached the performance impact because I'm working on the different
> modes in xsk to see how it really behaves. You can take it as a kind
> of investigation :)

How does the copy mode compare to a normal packet socket?