mt76: mt7663: add support to sched scan with randomise addr

Add support to sched scan with randomise addr
Co-developed-by: Wan-Feng Jiang <Wan-Feng.Jiang@mediatek.com>
Signed-off-by: Wan-Feng Jiang <Wan-Feng.Jiang@mediatek.com>
Co-developed-by: Soul Huang <Soul.Huang@mediatek.com>
Signed-off-by: Soul Huang <Soul.Huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7615/init.c

@@ -139,7 +139,8 @@ void mt7615_check_offload_capability(struct mt7615_dev *dev)
 		ieee80211_hw_set(hw, SUPPORTS_PS);
 		ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 
-		wiphy->features |= NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
+		wiphy->features |= NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
+				   NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 	} else {
 		dev->ops->hw_scan = NULL;
 		dev->ops->cancel_hw_scan = NULL;

drivers/net/wireless/mediatek/mt76/mt7615/mcu.c

@@ -2907,7 +2907,12 @@ int mt7615_mcu_sched_scan_req(struct mt7615_phy *phy,
 	req = (struct mt7615_sched_scan_req *)skb_put(skb, sizeof(*req));
 	req->version = 1;
 	req->seq_num = mvif->scan_seq_num | ext_phy << 7;
-	req->scan_func = !!(sreq->flags & NL80211_SCAN_FLAG_RANDOM_ADDR);
+
+	if (sreq->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
+		get_random_mask_addr(req->random_mac, sreq->mac_addr,
+				     sreq->mac_addr_mask);
+		req->scan_func = 1;
+	}
 
 	req->ssids_num = sreq->n_ssids;
 	for (i = 0; i < req->ssids_num; i++) {

drivers/net/wireless/mediatek/mt76/mt7615/mcu.h

@@ -405,10 +405,11 @@ struct mt7615_sched_scan_req {
 	u8 channel_type;
 	u8 channels_num;
 	u8 intervals_num;
-	u8 scan_func;
+	u8 scan_func; /* BIT(0) eable random mac address */
 	struct mt7615_mcu_scan_channel channels[64];
 	__le16 intervals[MT7615_MAX_SCHED_SCAN_INTERVAL];
-	u8 pad2[64];
+	u8 random_mac[ETH_ALEN]; /* valid when BIT(0) in scan_func is set */
+	u8 pad2[58];
 } __packed;
 
 struct nt7615_sched_scan_done {