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[ath-next] wifi: ath12k: Fix the QoS control field offset to build QoS header

Message ID 20250415184102.2707300-1-nithyanantham.paramasivam@oss.qualcomm.com (mailing list archive)
State New
Delegated to: Jeff Johnson
Headers show
Series [ath-next] wifi: ath12k: Fix the QoS control field offset to build QoS header | expand

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wifibot/tree_selection success Clearly marked for ath-next
wifibot/ynl success Generated files up to date; no warnings/errors; no diff in generated;
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wifibot/build_clang_rust success No Rust files in patch. Skipping build
wifibot/build_tools success No tools touched, skip
wifibot/check_selftest success No net selftest shell script
wifibot/checkpatch warning WARNING: line length of 83 exceeds 80 columns WARNING: line length of 87 exceeds 80 columns WARNING: line length of 88 exceeds 80 columns
wifibot/deprecated_api success None detected
wifibot/header_inline success No static functions without inline keyword in header files
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Commit Message

Nithyanantham Paramasivam April 15, 2025, 6:41 p.m. UTC 
From: Ramasamy Kaliappan <quic_rkaliapp@quicinc.com>

Currently, in the mac80211 layer, received EAPOL packets are dropped
when the HT control field is present in the QoS header. This issue
arises due to an incorrect QoS control field offset used to build
the QoS header in the MSDU data, leading to a corrupted header in the
mac80211 layer. This issue also applies to other frames that contain
the QoS control field, such as QoS data or Null frames. To resolve
this, use ieee80211_get_qos_ctl() to obtain the correct QoS control
offset from the MSDU data. Additionally, ensure the QoS control header
is copied in little-endian format within the MSDU data.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
Signed-off-by: Ramasamy Kaliappan <quic_rkaliapp@quicinc.com>
Signed-off-by: Nithyanantham Paramasivam <nithyanantham.paramasivam@oss.qualcomm.com>
---
 drivers/net/wireless/ath/ath12k/dp_rx.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)


base-commit: d0bcc5eaaa611aacbffe6b2cc2fb64bfc3bdfcbc
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c
index 96785d60d671..93f93639270e 100644
--- a/drivers/net/wireless/ath/ath12k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath12k/dp_rx.c
@@ -2135,7 +2135,7 @@  static void ath12k_get_dot11_hdr_from_rx_desc(struct ath12k *ar,
 	struct ath12k_base *ab = ar->ab;
 	size_t hdr_len, crypto_len;
 	struct ieee80211_hdr hdr;
-	u16 qos_ctl;
+	__le16 qos_ctl;
 	u8 *crypto_hdr, mesh_ctrl;
 
 	ath12k_dp_rx_desc_get_dot11_hdr(ab, rx_desc, &hdr);
@@ -2156,13 +2156,13 @@  static void ath12k_get_dot11_hdr_from_rx_desc(struct ath12k *ar,
 
 	/* Add QOS header */
 	if (ieee80211_is_data_qos(hdr.frame_control)) {
-		qos_ctl = rxcb->tid;
+		struct ieee80211_hdr *qos_ptr = (struct ieee80211_hdr *)msdu->data;
+
+		qos_ctl = cpu_to_le16(rxcb->tid & IEEE80211_QOS_CTL_TID_MASK);
 		if (mesh_ctrl)
-			qos_ctl |= IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT;
+			qos_ctl |= cpu_to_le16(IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT);
 
-		/* TODO: Add other QoS ctl fields when required */
-		memcpy(msdu->data + (hdr_len - IEEE80211_QOS_CTL_LEN),
-		       &qos_ctl, IEEE80211_QOS_CTL_LEN);
+		memcpy(ieee80211_get_qos_ctl(qos_ptr), &qos_ctl, IEEE80211_QOS_CTL_LEN);
 	}
 }