[PATCH ath-next 1/2] wifi: ath12k: using msdu end descriptor to check for rx multicast packets

[Vasanthakumar Thiagarajan]

On 4/8/2025 6:31 PM, Sarika Sharma wrote:
> Currently, the RX multicast broadcast packet check is performed using
> bit 15 from the info6 field of the MPDU start descriptor. This check
> can also be done using bit 9 from the info5 field of the MSDU end
> descriptor. However, in some scenarios multicast bit is not set when
> fetched from MPDU start descriptor.
> Therefore, checking the RX multicast broadcast packet from the MSDU
> end descriptor is more reliable as it is per MSDU.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Sarika Sharma <quic_sarishar at quicinc.com>
> ---
>   drivers/net/wireless/ath/ath12k/hal.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/wireless/ath/ath12k/hal.c b/drivers/net/wireless/ath/ath12k/hal.c
> index d00869a33fea..d961392bb981 100644
> --- a/drivers/net/wireless/ath/ath12k/hal.c
> +++ b/drivers/net/wireless/ath/ath12k/hal.c
> @@ -449,8 +449,8 @@ static u8 *ath12k_hw_qcn9274_rx_desc_mpdu_start_addr2(struct hal_rx_desc *desc)
>   
>   static bool ath12k_hw_qcn9274_rx_desc_is_da_mcbc(struct hal_rx_desc *desc)
>   {
> -	return __le32_to_cpu(desc->u.qcn9274.mpdu_start.info6) &
> -	       RX_MPDU_START_INFO6_MCAST_BCAST;
> +	return __le16_to_cpu(desc->u.qcn9274.msdu_end.info5) &
> +	       RX_MSDU_END_INFO5_DA_IS_MCBC;
>   }
>   
>   static void ath12k_hw_qcn9274_rx_desc_get_dot11_hdr(struct hal_rx_desc *desc,
> @@ -902,8 +902,8 @@ static u8 *ath12k_hw_qcn9274_compact_rx_desc_mpdu_start_addr2(struct hal_rx_desc
>   
>   static bool ath12k_hw_qcn9274_compact_rx_desc_is_da_mcbc(struct hal_rx_desc *desc)
>   {
> -	return __le32_to_cpu(desc->u.qcn9274_compact.mpdu_start.info6) &
> -	       RX_MPDU_START_INFO6_MCAST_BCAST;
> +	return __le32_to_cpu(desc->u.qcn9274_compact.msdu_end.info5) &
> +	       RX_MSDU_END_INFO5_DA_IS_MCBC;

hal.c:905:16: warning: cast to restricted __le32
hal.c:905:16: warning: cast from restricted __le16

Pls address the above warning.

Vasanth