Re: [PATCH net-next 07/12] ice: Switchdev FDB events support

[Simon Horman <simon.horman@corigine.com>]

On Tue, Jun 20, 2023 at 10:44:18AM -0700, Tony Nguyen wrote:
> From: Wojciech Drewek <wojciech.drewek@intel.com>
> 
> Listen for SWITCHDEV_FDB_{ADD|DEL}_TO_DEVICE events while in switchdev
> mode. Accept these events on both uplink and VF PR ports. Add HW
> rules in newly created workqueue. FDB entries are stored in rhashtable
> for lookup when removing the entry and in the list for cleanup
> purpose. Direction of the HW rule depends on the type of the ports
> on which the FDB event was received:
> 
> ICE_ESWITCH_BR_UPLINK_PORT:
> TX rule that forwards the packet to the LAN (egress).
> 
> ICE_ESWITCH_BR_VF_REPR_PORT:
> RX rule that forwards the packet to the VF associated
> with the port representor.
> 
> In both cases the rule matches on the dst mac address.
> All the FDB entries are stored in the bridge structure.
> When the port is removed all the FDB entries associated with
> this port are removed as well. This is achieved thanks to the reference
> to the port that FDB entry holds.
> 
> In the fwd rule we use only one lookup type (MAC address)
> but lkups_cnt variable is already introduced because
> we will have more lookups in the subsequent patches.
> 
> Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Reviewed-by: Simon Horman <simon.horman@corigine.com>