From: Sarika Sharma Date: Fri, 11 Apr 2025 06:15:23 +0000 (+0530) Subject: wifi: ath12k: correctly handle mcast packets for clients X-Git-Tag: v6.12.61~4 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1eb56723b3203d366d2293a368b8bc8ef8894cd;p=thirdparty%2Fkernel%2Fstable.git wifi: ath12k: correctly handle mcast packets for clients commit 4541b0c8c3c1b85564971d497224e57cf8076a02 upstream. Currently, RX is_mcbc bit is set for packets sent from client as destination address (DA) is multicast/broadcast address, but packets are actually unicast as receiver address (RA) is not multicast address. Hence, packets are not handled properly due to this is_mcbc bit. Therefore, reset the is_mcbc bit if interface type is AP. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1 Signed-off-by: Sarika Sharma Reviewed-by: Vasanthakumar Thiagarajan Link: https://patch.msgid.link/20250411061523.859387-3-quic_sarishar@quicinc.com Signed-off-by: Jeff Johnson [ Adjust context ] Signed-off-by: Oliver Sedlbauer Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c index eebdcc16e8fc4..1c0d796ffc7ad 100644 --- a/drivers/net/wireless/ath/ath12k/dp_rx.c +++ b/drivers/net/wireless/ath/ath12k/dp_rx.c @@ -2214,6 +2214,11 @@ static void ath12k_dp_rx_h_mpdu(struct ath12k *ar, spin_lock_bh(&ar->ab->base_lock); peer = ath12k_dp_rx_h_find_peer(ar->ab, msdu); if (peer) { + /* resetting mcbc bit because mcbc packets are unicast + * packets only for AP as STA sends unicast packets. + */ + rxcb->is_mcbc = rxcb->is_mcbc && !peer->ucast_ra_only; + if (rxcb->is_mcbc) enctype = peer->sec_type_grp; else diff --git a/drivers/net/wireless/ath/ath12k/peer.c b/drivers/net/wireless/ath/ath12k/peer.c index 19c0626fbff1f..461749b0f732c 100644 --- a/drivers/net/wireless/ath/ath12k/peer.c +++ b/drivers/net/wireless/ath/ath12k/peer.c @@ -331,6 +331,9 @@ int ath12k_peer_create(struct ath12k *ar, struct ath12k_vif *arvif, arvif->ast_idx = peer->hw_peer_id; } + if (arvif->vif->type == NL80211_IFTYPE_AP) + peer->ucast_ra_only = true; + peer->sec_type = HAL_ENCRYPT_TYPE_OPEN; peer->sec_type_grp = HAL_ENCRYPT_TYPE_OPEN; diff --git a/drivers/net/wireless/ath/ath12k/peer.h b/drivers/net/wireless/ath/ath12k/peer.h index 7b3500b5c8c20..05d4fdd3f82d0 100644 --- a/drivers/net/wireless/ath/ath12k/peer.h +++ b/drivers/net/wireless/ath/ath12k/peer.h @@ -47,6 +47,8 @@ struct ath12k_peer { /* protected by ab->data_lock */ bool dp_setup_done; + + bool ucast_ra_only; }; void ath12k_peer_unmap_event(struct ath12k_base *ab, u16 peer_id);