wifi: ath12k: fix incorrect handling of AMSDU frames

When a data traffic with size greater than 1500 is initiated,
say size 65500, it is sent as a set of AMSDUs (3 MSDUs)
in a MPDU.

These AMSDUs are incorrectly classified as multicast
and peer id gets changed, except for first msdu,
because of mcast_bcast bit derived from rx_desc
for every msdu received.

The mcast_bcast bit in rx_desc is only valid for
first msdu. Hence, add changes to derive mcast_bcast
only if it is a first msdu.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Signed-off-by: Harshitha Prem <quic_hprem@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230320090400.30027-1-quic_hprem@quicinc.com

diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c
index b368494..e78478a 100644 (file)
--- a/drivers/net/wireless/ath/ath12k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath12k/dp_rx.c
@@ -196,7 +196,8 @@ static void ath12k_dp_rxdesc_set_msdu_len(struct ath12k_base *ab,
 static bool ath12k_dp_rx_h_is_mcbc(struct ath12k_base *ab,
                                   struct hal_rx_desc *desc)
 {
-       return ab->hw_params->hal_ops->rx_desc_is_mcbc(desc);
+       return (ath12k_dp_rx_h_first_msdu(ab, desc) &&
+               ab->hw_params->hal_ops->rx_desc_is_mcbc(desc));
 }
 
 static bool ath12k_dp_rxdesc_mac_addr2_valid(struct ath12k_base *ab,