Re: [PATCH net-next 0/2] net: dsa: mxl862xx: add support for bridge offloading

[Daniel Golle]

On Sat, Mar 07, 2026 at 03:29:15AM +0000, Daniel Golle wrote:
> As a next step to complete the mxl862xx DSA driver, add support for
> offloading forwarding between bridged ports to the switch hardware.
> 
> This works pretty much without any big surprises, apart from two
> subtleties:
>  * per-port control over flooding behavior has to be implemented by
>    (ab)using a 0-rate QoS meters as stopper in lack of any better
>    option.
>  * STP state transition unconditionally enables learning on a port
>    even if it was previously explicitely disabled (a firmware bug)
> 
> Note that as the driver is still lacking all VLAN features (which
> are going to be added next), at this point some of the
> bridge_vlan_aware.sh tests are failing after applying this series.
> 
> This is expected and cannot be avoided without implementing
> port_vlan_filtering + port_vlan_add/del. And adding both bridge and
> VLAN offloading at the same time would be too much for anyone to
> review.
> 
> All other relevant selftests (including bridge_vlan_unaware.sh) are
> still passing.

I forgot to add that (as expected) also test

VLAN-aware bridge with different PVIDs: Checking which packets were received

now fails in no_forwarding.sh, and will be fixed by implementing VLAN
operations in the next series.


> 
> Daniel Golle (2):
>   dsa: tag_mxl862xx: set dsa_default_offload_fwd_mark()
>   net: dsa: mxl862xx: implement bridge offloading
> 
>  drivers/net/dsa/mxl862xx/mxl862xx-api.h | 171 +++++++
>  drivers/net/dsa/mxl862xx/mxl862xx-cmd.h |  19 +-
>  drivers/net/dsa/mxl862xx/mxl862xx.c     | 576 ++++++++++++++++++++++--
>  drivers/net/dsa/mxl862xx/mxl862xx.h     |  21 +
>  net/dsa/tag_mxl862xx.c                  |   2 +
>  5 files changed, 757 insertions(+), 32 deletions(-)
> 
> -- 
> 2.53.0