netdev - Re: [iwl-net v1] ice: tc: do default match on all profiles

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Date: Mon, 18 Mar 2024 18:55:59 +0000
From: Simon Horman <horms@...nel.org>
To: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
	Marcin Szycik <marcin.szycik@...ux.intel.com>,
	Michal Kubiak <michal.kubiak@...el.com>
Subject: Re: [iwl-net v1] ice: tc: do default match on all profiles

On Tue, Mar 12, 2024 at 11:52:59AM +0100, Michal Swiatkowski wrote:
> A simple non-tunnel rule (e.g. matching only on destination MAC) in
> hardware will be hit only if the packet isn't a tunnel. In software
> execution of the same command, the rule will match both tunnel and
> non-tunnel packets.
> 
> Change the hardware behaviour to match tunnel and non-tunnel packets in
> this case. Do this by considering all profiles when adding non-tunnel rule
> (rule not added on tunnel, or not redirecting to tunnel).
> 
> Example command:
> tc filter add dev pf0 ingress protocol ip flower skip_sw action mirred \
> 	egress redirect dev pr0
> 
> It should match also tunneled packets, the same as command with skip_hw
> will do in software.
> 
> Fixes: 9e300987d4a8 ("ice: VXLAN and Geneve TC support")
> Reviewed-by: Marcin Szycik <marcin.szycik@...ux.intel.com>
> Reviewed-by: Michal Kubiak <michal.kubiak@...el.com>
> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>

Reviewed-by: Simon Horman <horms@...nel.org>