Re: [PATCH iwl-next v4 5/6] ice: support egress drop rules on PF

Simon Horman
2025-02-20T14:58:47Z

On Fri, Feb 14, 2025 at 09:50:39AM +0100, Larysa Zaremba wrote:
> tc clsact qdisc allows us to add offloaded egress rules with commands such
> as the following one:
>
> tc filter add dev <ifname> egress protocol lldp flower skip_sw action drop
>
> Support the egress rule drop action when added to PF, with a few caveats:
> * in switchdev mode, all PF traffic has to go uplink with an exception for
> LLDP that can be delegated to a single VSI at a time
> * in legacy mode, we cannot delegate LLDP functionality to another VSI, so
> such packets from PF should not be blocked.
>
> Also, simplify the rule direction logic, it was previously derived from
> actions, but actually can be inherited from the tc block (and flipped in
> case of port representors).
>
> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
> Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>

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