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wifi: ath12k: Handle 4-address EAPOL frames from WBM error path

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Whenever hardware receives 4-address EAPOL frames from an unauthorized
station it is routed through WBM/RXDMA error path with the
HAL_REO_ENTR_RING_RXDMA_ECODE_UNAUTH_WDS_ERR error code. But, the
current driver does not handle the 4-address EAPOL frames
in the WBM error path. As a result, these frames are dropped,
causing authentication failures and connectivity issues for 4-address
stations.

Add support to correctly process these frames and forward them to mac80211
for proper handling. This prevents the loss of 4-address EAPOL frames and
ensures reliable connectivity for WDS/4-address clients.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.6-01243-QCAHKSWPL_SILICONZ-1

Co-developed-by: Sathishkumar Muruganandam <quic_murugana@quicinc.com>
Signed-off-by: Sathishkumar Muruganandam <quic_murugana@quicinc.com>
Signed-off-by: Tamizh Chelvam Raja <tamizh.raja@oss.qualcomm.com>
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Link: https://patch.msgid.link/20260525110942.2890212-7-tamizh.raja@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
This commit is contained in:
Tamizh Chelvam Raja 2026-05-25 16:39:42 +05:30 committed by Jeff Johnson
parent f818260ac6
commit 565257a857
1 changed files with 53 additions and 0 deletions
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53
drivers/net/wireless/ath/ath12k/wifi7/dp_rx.c
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@ -1704,6 +1704,56 @@ static bool ath12k_wifi7_dp_rx_h_tkip_mic_err(struct ath12k_pdev_dp *dp_pdev,
return false;
}
static bool ath12k_wifi7_dp_rx_h_unauth_wds_err(struct ath12k_pdev_dp *dp_pdev,
struct sk_buff *msdu,
struct hal_rx_desc_data *rx_info)
{
struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
struct ath12k_dp *dp = dp_pdev->dp;
u32 hdr_len, hal_rx_desc_sz = dp->ab->hal.hal_desc_sz;
u8 l3pad_bytes = rx_info->l3_pad_bytes;
struct ath12k_dp_rx_rfc1042_hdr *llc;
u16 msdu_len = rx_info->msdu_len;
struct ath12k_dp_peer *peer;
struct ieee80211_hdr *hdr;
int ret;
guard(rcu)();
peer = ath12k_dp_peer_find_by_peerid(dp_pdev, rxcb->peer_id);
if (!peer) {
ath12k_dbg(dp->ab, ATH12K_DBG_DATA,
"failed to find the peer to process unauth wds err handling peer_id %d\n",
rxcb->peer_id);
return true;
}
if ((hal_rx_desc_sz + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE)
return true;
skb_put(msdu, hal_rx_desc_sz + l3pad_bytes + msdu_len);
skb_pull(msdu, hal_rx_desc_sz + l3pad_bytes);
if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu,
rx_info)))
return true;
ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
ret = ath12k_wifi7_dp_rx_h_mpdu(dp_pdev, msdu, rx_info);
if (ret)
return true;
rxcb->tid = rx_info->tid;
hdr = (struct ieee80211_hdr *)msdu->data;
hdr_len = ieee80211_hdrlen(hdr->frame_control);
llc = (struct ath12k_dp_rx_rfc1042_hdr *)(msdu->data + hdr_len);
if (llc->snap_type != cpu_to_be16(ETH_P_PAE))
return true;
return false;
}
static bool ath12k_wifi7_dp_rx_h_rxdma_err(struct ath12k_pdev_dp *dp_pdev,
struct sk_buff *msdu,
struct hal_rx_desc_data *rx_info)
@ -1715,6 +1765,9 @@ static bool ath12k_wifi7_dp_rx_h_rxdma_err(struct ath12k_pdev_dp *dp_pdev,
dp->device_stats.rxdma_error[rxcb->err_code]++;
switch (rxcb->err_code) {
case HAL_REO_ENTR_RING_RXDMA_ECODE_UNAUTH_WDS_ERR:
drop = ath12k_wifi7_dp_rx_h_unauth_wds_err(dp_pdev, msdu, rx_info);
break;
case HAL_REO_ENTR_RING_RXDMA_ECODE_DECRYPT_ERR:
case HAL_REO_ENTR_RING_RXDMA_ECODE_TKIP_MIC_ERR:
if (rx_info->err_bitmap & HAL_RX_MPDU_ERR_TKIP_MIC) {