netdev - Re: [PATCH net-next] net: netfilter: Add IPIP flowtable SW acceleration

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Message-ID: <20250624172213.67768427@kernel.org>
Date: Tue, 24 Jun 2025 17:22:13 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Lorenzo Bianconi <lorenzo@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>, David Ahern
 <dsahern@...nel.org>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni
 <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, Pablo Neira Ayuso
 <pablo@...filter.org>, Jozsef Kadlecsik <kadlec@...filter.org>,
 netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
 coreteam@...filter.org
Subject: Re: [PATCH net-next] net: netfilter: Add IPIP flowtable SW
 acceleration

On Mon, 23 Jun 2025 15:15:51 +0200 Lorenzo Bianconi wrote:
> Introduce SW acceleration for IPIP tunnels in the netfilter flowtable
> infrastructure.

From a look at this patch and the code in nf_flow_table_ip.c
I'm a little unclear on whether the header push/pop happens
if we "offload" the forwarding.

> IPIP SW acceleration can be tested...

I think it's time we start to ask for selftest that can both run in SW
mode and be offload if appropriate devices are pass in via env.
-- 
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