wifi: mt76: mt7925: add RNR scan support for 6GHz

Enhance the mt7925 to include RNR scan support. It adds
the necessary RNR information to the scan command.

Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Link: https://patch.msgid.link/20250321013829.3598-2-mingyen.hsieh@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>

2 files changed, 38 insertions, 13 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index 63076171df3b..eed2dd56b5d0 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -2830,7 +2830,6 @@ int mt7925_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
 	struct mt76_dev *mdev = phy->dev;
 	struct mt76_connac_mcu_scan_channel *chan;
 	struct sk_buff *skb;
-
 	struct scan_hdr_tlv *hdr;
 	struct scan_req_tlv *req;
 	struct scan_ssid_tlv *ssid;
@@ -2842,8 +2841,8 @@ int mt7925_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
 	int max_len;
 
 	max_len = sizeof(*hdr) + sizeof(*req) + sizeof(*ssid) +
-				sizeof(*bssid) + sizeof(*chan_info) +
-				sizeof(*misc) + sizeof(*ie);
+		  sizeof(*bssid) * MT7925_RNR_SCAN_MAX_BSSIDS +
+		  sizeof(*chan_info) + sizeof(*misc) + sizeof(*ie);
 
 	skb = mt76_mcu_msg_alloc(mdev, NULL, max_len);
 	if (!skb)
@@ -2866,6 +2865,8 @@ int mt7925_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
 	for (i = 0; i < sreq->n_ssids; i++) {
 		if (!sreq->ssids[i].ssid_len)
 			continue;
+		if (i > MT7925_RNR_SCAN_MAX_BSSIDS)
+			break;
 
 		ssid->ssids[i].ssid_len = cpu_to_le32(sreq->ssids[i].ssid_len);
 		memcpy(ssid->ssids[i].ssid, sreq->ssids[i].ssid,
@@ -2875,10 +2876,31 @@ int mt7925_mcu_hw_scan(struct mt76_phy *phy, struct ieee80211_vif *vif,
 	ssid->ssid_type = n_ssids ? BIT(2) : BIT(0);
 	ssid->ssids_num = n_ssids;
 
-	tlv = mt76_connac_mcu_add_tlv(skb, UNI_SCAN_BSSID, sizeof(*bssid));
-	bssid = (struct scan_bssid_tlv *)tlv;
+	if (sreq->n_6ghz_params) {
+		u8 j;
+
+		mt76_connac_mcu_build_rnr_scan_param(mdev, sreq);
+
+		for (j = 0; j < mdev->rnr.bssid_num; j++) {
+			if (j > MT7925_RNR_SCAN_MAX_BSSIDS)
+				break;
+
+			tlv = mt76_connac_mcu_add_tlv(skb, UNI_SCAN_BSSID,
+						      sizeof(*bssid));
+			bssid = (struct scan_bssid_tlv *)tlv;
 
-	memcpy(bssid->bssid, sreq->bssid, ETH_ALEN);
+			ether_addr_copy(bssid->bssid, mdev->rnr.bssid[j]);
+			bssid->match_ch = mdev->rnr.channel[j];
+			bssid->match_ssid_ind = MT7925_RNR_SCAN_MAX_BSSIDS;
+			bssid->match_short_ssid_ind = MT7925_RNR_SCAN_MAX_BSSIDS;
+		}
+		req->scan_func |= SCAN_FUNC_RNR_SCAN;
+	} else {
+		tlv = mt76_connac_mcu_add_tlv(skb, UNI_SCAN_BSSID, sizeof(*bssid));
+		bssid = (struct scan_bssid_tlv *)tlv;
+
+		ether_addr_copy(bssid->bssid, sreq->bssid);
+	}
 
 	tlv = mt76_connac_mcu_add_tlv(skb, UNI_SCAN_CHANNEL, sizeof(*chan_info));
 	chan_info = (struct scan_chan_info_tlv *)tlv;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h
index b1882944807e..c569f02da8f5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h
@@ -196,6 +196,7 @@ enum {
 	UNI_SNIFFER_CONFIG,
 };
 
+#define MT7925_RNR_SCAN_MAX_BSSIDS	10
 struct scan_hdr_tlv {
 	/* fixed field */
 	u8 seq_num;
@@ -223,7 +224,7 @@ struct scan_req_tlv {
 	__le16 timeout_value;
 	__le16 probe_delay_time;
 	__le32 func_mask_ext;
-};
+} __packed;
 
 struct scan_ssid_tlv {
 	__le16 tag;
@@ -235,9 +236,10 @@ struct scan_ssid_tlv {
 		       * BIT(2) + ssid_type_ext BIT(0) specified SSID only
 		       */
 	u8 ssids_num;
-	u8 pad[2];
-	struct mt76_connac_mcu_scan_ssid ssids[4];
-};
+	u8 is_short_ssid;
+	u8 pad;
+	struct mt76_connac_mcu_scan_ssid ssids[MT7925_RNR_SCAN_MAX_BSSIDS];
+} __packed;
 
 struct scan_bssid_tlv {
 	__le16 tag;
@@ -247,8 +249,9 @@ struct scan_bssid_tlv {
 	u8 match_ch;
 	u8 match_ssid_ind;
 	u8 rcpi;
-	u8 pad[3];
-};
+	u8 match_short_ssid_ind;
+	u8 pad[2];
+} __packed;
 
 struct scan_chan_info_tlv {
 	__le16 tag;
@@ -264,7 +267,7 @@ struct scan_chan_info_tlv {
 	u8 channels_num; /* valid when channel_type is 4 */
 	u8 pad[2];
 	struct mt76_connac_mcu_scan_channel channels[64];
-};
+} __packed;
 
 struct scan_ie_tlv {
 	__le16 tag;