[PATCH ath-next v2] wifi: ath12k: Prevent multicast duplication for dynamic VLAN

[Vasanthakumar Thiagarajan]

On 4/25/2025 3:44 AM, Muna Sinada wrote:
> Since dynamic VLAN traffic is software encrypted and encapsulated,
> mac80211 handles the duplication on each link for MLO dynamic VLAN
> multicast.
> 
> Currently in ath12k_mac_op_tx(), all multicast frames are duplicated
> and are assigned a mcbc_gsn. This is causing dynamic VLAN multicast
> traffic to be dropped in hardware.
> 
> Prevent dynamic VLAN multicast traffic from being duplicated again in
> the driver. Check if incoming packet is a dynamic VLAN packet and
> avoid defaulting to multicast conditional.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
> 
> Signed-off-by: Muna Sinada <muna.sinada at oss.qualcomm.com>

Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan at oss.qualcomm.com>