diff mbox series

wifi: mt76: mt7925: fix incorrect scan probe IE handling for hw_scan

Message ID 20250616063649.1100503-1-mingyen.hsieh@mediatek.com
State New
Headers show
Series wifi: mt76: mt7925: fix incorrect scan probe IE handling for hw_scan | expand

Commit Message

Mingyen Hsieh June 16, 2025, 6:36 a.m. UTC 
From: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>

The IEs should be processed and filled into the command tlv separately
according to each band.

Cc: stable@vger.kernel.org
Fixes: c948b5da6bbe ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
---
 .../net/wireless/mediatek/mt76/mt7925/main.c  |  2 +-
 .../net/wireless/mediatek/mt76/mt7925/mcu.c   | 75 +++++++++++++++----
 .../net/wireless/mediatek/mt76/mt7925/mcu.h   |  5 +-
 3 files changed, 63 insertions(+), 19 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/main.c b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
index 555ef302ae97..506387b4ce13 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
@@ -1540,7 +1540,7 @@  mt7925_start_sched_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 
 	mt792x_mutex_acquire(dev);
 
-	err = mt7925_mcu_sched_scan_req(mphy, vif, req);
+	err = mt7925_mcu_sched_scan_req(mphy, vif, req, ies);
 	if (err < 0)
 		goto out;
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index ef1d42af96f7..9993d47e643c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -192,6 +192,7 @@  mt7925_connac_mcu_set_wow_ctrl(struct mt76_phy *phy, struct ieee80211_vif *vif,
 			       bool suspend, struct cfg80211_wowlan *wowlan)
 {
 	struct mt76_vif_link *mvif = (struct mt76_vif_link *)vif->drv_priv;
+	struct ieee80211_scan_ies ies = {};
 	struct mt76_dev *dev = phy->dev;
 	struct {
 		struct {
@@ -227,7 +228,7 @@  mt7925_connac_mcu_set_wow_ctrl(struct mt76_phy *phy, struct ieee80211_vif *vif,
 		req.wow_ctrl_tlv.trigger |= (UNI_WOW_DETECT_TYPE_DISCONNECT |
 					     UNI_WOW_DETECT_TYPE_BCN_LOST);
 	if (wowlan->nd_config) {
-		mt7925_mcu_sched_scan_req(phy, vif, wowlan->nd_config);
+		mt7925_mcu_sched_scan_req(phy, vif, wowlan->nd_config, &ies);
 		req.wow_ctrl_tlv.trigger |= UNI_WOW_DETECT_TYPE_SCH_SCAN_HIT;
 		mt7925_mcu_sched_scan_enable(phy, vif, suspend);
 	}
@@ -3085,6 +3086,54 @@  int mt7925_mcu_set_dbdc(struct mt76_phy *phy, bool enable)
 	return err;
 }
 
+static void
+mt7925_mcu_build_scan_ie_tlv(struct mt76_dev *mdev,
+			     struct sk_buff *skb,
+			     struct ieee80211_scan_ies *scan_ies)
+{
+	u32 max_len = sizeof(struct scan_ie_tlv) + MT76_CONNAC_SCAN_IE_LEN;
+	struct scan_ie_tlv *ie;
+	enum nl80211_band i;
+	struct tlv *tlv;
+	const u8 *ies;
+	u16 ies_len;
+
+	for (i = 0; i <= NL80211_BAND_6GHZ; i++) {
+		if (i == NL80211_BAND_60GHZ)
+			continue;
+
+		ies = scan_ies->ies[i];
+		ies_len = scan_ies->len[i];
+
+		if (!ies || !ies_len)
+			continue;
+
+		if (ies_len > max_len)
+			return;
+
+		tlv = mt76_connac_mcu_add_tlv(skb, UNI_SCAN_IE,
+					      sizeof(*ie) + ies_len);
+		ie = (struct scan_ie_tlv *)tlv;
+
+		memcpy(ie->ies, ies, ies_len);
+		ie->ies_len = cpu_to_le16(ies_len);
+
+		switch (i) {
+		case NL80211_BAND_2GHZ:
+			ie->band = 1;
+			break;
+		case NL80211_BAND_6GHZ:
+			ie->band = 3;
+			break;
+		default:
+			ie->band = 2;
+			break;
+		}
+
+		max_len -= (sizeof(*ie) + ies_len);
+	}
+}
+
 int mt7925_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
 		       struct ieee80211_scan_request *scan_req)
 {
@@ -3110,7 +3159,8 @@  int mt7925_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
 
 	max_len = sizeof(*hdr) + sizeof(*req) + sizeof(*ssid) +
 		  sizeof(*bssid) * MT7925_RNR_SCAN_MAX_BSSIDS +
-		  sizeof(*chan_info) + sizeof(*misc) + sizeof(*ie);
+		  sizeof(*chan_info) + sizeof(*misc) + sizeof(*ie) +
+		  MT76_CONNAC_SCAN_IE_LEN;
 
 	skb = mt76_mcu_msg_alloc(mdev, NULL, max_len);
 	if (!skb)
@@ -3192,13 +3242,6 @@  int mt7925_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
 	}
 	chan_info->channel_type = sreq->n_channels ? 4 : 0;
 
-	tlv = mt76_connac_mcu_add_tlv(skb, UNI_SCAN_IE, sizeof(*ie));
-	ie = (struct scan_ie_tlv *)tlv;
-	if (sreq->ie_len > 0) {
-		memcpy(ie->ies, sreq->ie, sreq->ie_len);
-		ie->ies_len = cpu_to_le16(sreq->ie_len);
-	}
-
 	req->scan_func |= SCAN_FUNC_SPLIT_SCAN;
 
 	tlv = mt76_connac_mcu_add_tlv(skb, UNI_SCAN_MISC, sizeof(*misc));
@@ -3209,6 +3252,9 @@  int mt7925_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
 		req->scan_func |= SCAN_FUNC_RANDOM_MAC;
 	}
 
+	/* Append scan probe IEs as the last tlv */
+	mt7925_mcu_build_scan_ie_tlv(mdev, skb, &scan_req->ies);
+
 	err = mt76_mcu_skb_send_msg(mdev, skb, MCU_UNI_CMD(SCAN_REQ),
 				    true);
 	if (err < 0)
@@ -3220,7 +3266,8 @@  EXPORT_SYMBOL_GPL(mt7925_mcu_hw_scan);
 
 int mt7925_mcu_sched_scan_req(struct mt76_phy *phy,
 			      struct ieee80211_vif *vif,
-			      struct cfg80211_sched_scan_request *sreq)
+			      struct cfg80211_sched_scan_request *sreq,
+			      struct ieee80211_scan_ies *ies)
 {
 	struct mt76_vif_link *mvif = (struct mt76_vif_link *)vif->drv_priv;
 	struct ieee80211_channel **scan_list = sreq->channels;
@@ -3308,12 +3355,8 @@  int mt7925_mcu_sched_scan_req(struct mt76_phy *phy,
 	}
 	chan_info->channel_type = sreq->n_channels ? 4 : 0;
 
-	tlv = mt76_connac_mcu_add_tlv(skb, UNI_SCAN_IE, sizeof(*ie));
-	ie = (struct scan_ie_tlv *)tlv;
-	if (sreq->ie_len > 0) {
-		memcpy(ie->ies, sreq->ie, sreq->ie_len);
-		ie->ies_len = cpu_to_le16(sreq->ie_len);
-	}
+	/* Append scan probe IEs as the last tlv */
+	mt7925_mcu_build_scan_ie_tlv(mdev, skb, ies);
 
 	return mt76_mcu_skb_send_msg(mdev, skb, MCU_UNI_CMD(SCAN_REQ),
 				     true);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h
index 3dddadb7457b..c34b28769782 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h
@@ -269,7 +269,7 @@  struct scan_ie_tlv {
 	__le16 ies_len;
 	u8 band;
 	u8 pad;
-	u8 ies[MT76_CONNAC_SCAN_IE_LEN];
+	u8 ies[];
 };
 
 struct scan_misc_tlv {
@@ -674,7 +674,8 @@  int mt7925_mcu_cancel_hw_scan(struct mt76_phy *phy,
 			      struct ieee80211_vif *vif);
 int mt7925_mcu_sched_scan_req(struct mt76_phy *phy,
 			      struct ieee80211_vif *vif,
-			      struct cfg80211_sched_scan_request *sreq);
+			      struct cfg80211_sched_scan_request *sreq,
+			      struct ieee80211_scan_ies *ies);
 int mt7925_mcu_sched_scan_enable(struct mt76_phy *phy,
 				 struct ieee80211_vif *vif,
 				 bool enable);