Re: [PATCH net-next 1/2] dsa: tag_mxl862xx: set dsa_default_offload_fwd_mark()

[Jonas Gorski]

Hi,

On 07/03/2026 04:30, Daniel Golle wrote:
> The MxL862xx offloads forwarding between bridged ports to the
> hardware, so set dsa_default_offload_fwd_mark() to avoid duplicate
> forwarding of packets of (eg. flooded) frames arriving at the CPU
> port.
> 
> Signed-off-by: Daniel Golle <daniel@xxxxxxxxxxxxxx>
> ---
>  net/dsa/tag_mxl862xx.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/net/dsa/tag_mxl862xx.c b/net/dsa/tag_mxl862xx.c
> index 01f2158682718..c02f69de61cbb 100644
> --- a/net/dsa/tag_mxl862xx.c
> +++ b/net/dsa/tag_mxl862xx.c
> @@ -92,6 +92,8 @@ static struct sk_buff *mxl862_tag_rcv(struct sk_buff *skb,
>  	skb_pull_rcsum(skb, MXL862_HEADER_LEN);
>  	dsa_strip_etype_header(skb, MXL862_HEADER_LEN);
>  
> +	dsa_default_offload_fwd_mark(skb);

Does the switch (by default) also flood link local traffic (e.g. STP, LACP,
etc)? If not, you should not mark these as fwd offloaded.

Is there is a bit in the header that says whether a packet was flooded or
trapped that you can check?

Best regards,
Jonas