From: Elad Yifee <eladwf@gmail.com>
To: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Jozsef Kadlecsik <kadlec@netfilter.org>,
Florian Westphal <fw@strlen.de>, Phil Sutter <phil@nwl.cc>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next RFC] netfilter: flowtable: add CT metadata action for nft flowtables
Date: Wed, 17 Sep 2025 06:10:10 +0300 [thread overview]
Message-ID: <CA+SN3srpbVBK10-PtOcikSphYDRf1WwWjS0d+R76-qCouAV2rQ@mail.gmail.com> (raw)
In-Reply-To: <aMnnKsqCGw5JFVrD@calendula>
On Wed, Sep 17, 2025 at 1:39 AM Pablo Neira Ayuso <pablo@netfilter.org> wrote:
>
> May I ask, where is the software plane extension for this feature?
> Will you add it for net/sched/act_ct.c?
>
> Adding the hardware offload feature only is a deal breaker IMO.
Software plane: This doesn’t add a new user feature, it just surfaces
existing CT state to offload so the software plane already exists
today via nft/TC. In software you can already set/match ct mark/labels
(e.g., tag flows), and once offloaded the exporter snapshots that so a
driver can map the tag to a HW queue/class if it wants per-flow QoS in
hardware. Drivers that don’t need it can simply accept and ignore the
metadata.
act_ct.c: Yes - I’ll include a small common helper so TC and nft
flowtable offloads produce identical CT metadata.
If there’s no objection to the direction, I’ll respin with:
- the common helper
- act_ct switched to it
- nft flowtable exporter appending CT metadata
next prev parent reply other threads:[~2025-09-17 3:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-12 16:30 [PATCH net-next RFC] netfilter: flowtable: add CT metadata action for nft flowtables Elad Yifee
2025-09-13 20:52 ` Florian Westphal
2025-09-14 6:40 ` Elad Yifee
2025-09-16 16:49 ` Elad Yifee
2025-09-16 22:39 ` Pablo Neira Ayuso
2025-09-17 3:10 ` Elad Yifee [this message]
2025-09-17 8:18 ` Pablo Neira Ayuso
2025-09-17 17:33 ` Elad Yifee
2025-09-24 22:51 ` Pablo Neira Ayuso
2025-09-27 13:55 ` Elad Yifee
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