netdev - RE: [Intel-wired-lan] [PATCH iwl-next v5 07/12] ice: Switchdev FDB events support

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Date: Mon, 19 Jun 2023 09:26:51 +0000
From: "Buvaneswaran, Sujai" <sujai.buvaneswaran@...el.com>
To: "Drewek, Wojciech" <wojciech.drewek@...el.com>,
	"intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
CC: "pmenzel@...gen.mpg.de" <pmenzel@...gen.mpg.de>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, "simon.horman@...igine.com"
	<simon.horman@...igine.com>, "dan.carpenter@...aro.org"
	<dan.carpenter@...aro.org>
Subject: RE: [Intel-wired-lan] [PATCH iwl-next v5 07/12] ice: Switchdev FDB
 events support

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of
> Wojciech Drewek
> Sent: Tuesday, June 13, 2023 3:43 PM
> To: intel-wired-lan@...ts.osuosl.org
> Cc: pmenzel@...gen.mpg.de; netdev@...r.kernel.org;
> simon.horman@...igine.com; dan.carpenter@...aro.org
> Subject: [Intel-wired-lan] [PATCH iwl-next v5 07/12] ice: Switchdev FDB
> events support
> 
> 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@...el.com>
> ---
> v2: declare-time initialization, code style nitpicks,
>     use typeof instead of full type name in the container_of
>     macro, use PTR_ERR_OR_ZERO in ice_eswitch_br_flow_create
> v5: move dst mac lookup assignment from
>     ice_eswitch_br_{egress|ingress}_rule_setup to
>     ice_eswitch_br_fwd_rule_create since this was duplicate
> ---
>  .../net/ethernet/intel/ice/ice_eswitch_br.c   | 439 +++++++++++++++++-
>  .../net/ethernet/intel/ice/ice_eswitch_br.h   |  46 ++
>  2 files changed, 484 insertions(+), 1 deletion(-)
> 
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@...el.com>