[PATCH 2/2] wifi: ath12k: Add support for MLO Multicast handling in driver

[Jeff Johnson]

On 1/9/2025 10:49 AM, Balamurugan Mahalingam wrote:
> For MLO netdevice, the broadcast frame should be transmitted with the
> same sequence number on all the links.
> 
> Per IEEE 802.11be-2024 section 10.3.2.14.2 "Transmitter requirements",
> An AP MLD shall use SNS11 in Table 10-5 (Transmitter sequence number
> spaces) maintained by the MLD to determine the sequence number of a
> group addressed data frame that is transmitted by an AP affiliated
> with the AP MLD so that the same group addressed Data frame
> transmitted over multiple links by the AP MLD uses the same
> sequence number for transmission on each link.
> 
> Currently the MLO multicast handling is done in the mac80211 layer.
> Enable support for handling MLO Multicast in the driver to update the
> hardware descriptors in a custom way to handle the multicast frames.
> Firmware expects the MLO multicast frames to the submitted to the
> hardware with special vdev_id (actual vdev_id + 128) to recognize it as
> a host inspected frame to avoid using the reinjected path and it also
> uses the multicast global sequence number (GSN) provided by the host
> in the HTT metadata to process and transmit it with the same sequence
> number.
> 
> 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: Balamurugan Mahalingam <quic_bmahalin at quicinc.com>

Acked-by: Jeff Johnson <jeff.johnson at oss.qualcomm.com>