wifi: mt76: fix bandwidth 80MHz link fail in 6GHz band

Due to information missing, the firmware may be fail on bandwidth
related settings in mt7921/mt7922. Add new cmd STA_REC_HE_V2 to apply
additional capabilities in 6GHz band.
Tested-by: Ben Greear <greearb@candelatech.com>
Co-developed-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c

@@ -744,6 +744,39 @@ mt76_connac_mcu_sta_he_tlv(struct sk_buff *skb, struct ieee80211_sta *sta)
 	he->pkt_ext = 2;
 }
 
+static void
+mt76_connac_mcu_sta_he_tlv_v2(struct sk_buff *skb, struct ieee80211_sta *sta)
+{
+	struct ieee80211_sta_he_cap *he_cap = &sta->deflink.he_cap;
+	struct ieee80211_he_cap_elem *elem = &he_cap->he_cap_elem;
+	struct sta_rec_he_v2 *he;
+	struct tlv *tlv;
+
+	tlv = mt76_connac_mcu_add_tlv(skb, STA_REC_HE_V2, sizeof(*he));
+
+	he = (struct sta_rec_he_v2 *)tlv;
+	memcpy(he->he_phy_cap, elem->phy_cap_info, sizeof(he->he_phy_cap));
+	memcpy(he->he_mac_cap, elem->mac_cap_info, sizeof(he->he_mac_cap));
+
+	switch (sta->deflink.bandwidth) {
+	case IEEE80211_STA_RX_BW_160:
+		if (elem->phy_cap_info[0] &
+		    IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)
+			he->max_nss_mcs[CMD_HE_MCS_BW8080] =
+				he_cap->he_mcs_nss_supp.rx_mcs_80p80;
+
+		he->max_nss_mcs[CMD_HE_MCS_BW160] =
+				he_cap->he_mcs_nss_supp.rx_mcs_160;
+		fallthrough;
+	default:
+		he->max_nss_mcs[CMD_HE_MCS_BW80] =
+				he_cap->he_mcs_nss_supp.rx_mcs_80;
+		break;
+	}
+
+	he->pkt_ext = IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US;
+}
+
 static u8
 mt76_connac_get_phy_mode_v2(struct mt76_phy *mphy, struct ieee80211_vif *vif,
 			    enum nl80211_band band, struct ieee80211_sta *sta)
@@ -838,6 +871,7 @@ void mt76_connac_mcu_sta_tlv(struct mt76_phy *mphy, struct sk_buff *skb,
 	/* starec he */
 	if (sta->deflink.he_cap.has_he) {
 		mt76_connac_mcu_sta_he_tlv(skb, sta);
+		mt76_connac_mcu_sta_he_tlv_v2(skb, sta);
 		if (band == NL80211_BAND_6GHZ &&
 		    sta_state == MT76_STA_INFO_STATE_ASSOC) {
 			struct sta_rec_he_6g_capa *he_6g_capa;

drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h

@@ -354,6 +354,16 @@ struct sta_rec_he {
 	u8 rsv2[2];
 } __packed;
 
+struct sta_rec_he_v2 {
+	__le16 tag;
+	__le16 len;
+	u8 he_mac_cap[6];
+	u8 he_phy_cap[11];
+	u8 pkt_ext;
+	/* 0: BW80, 1: BW160, 2: BW8080 */
+	__le16 max_nss_mcs[CMD_HE_MCS_BW_NUM];
+} __packed;
+
 struct sta_rec_amsdu {
 	__le16 tag;
 	__le16 len;
@@ -779,6 +789,7 @@ enum {
 	STA_REC_BFEE,
 	STA_REC_PHY = 0x15,
 	STA_REC_HE_6G = 0x17,
+	STA_REC_HE_V2 = 0x19,
 	STA_REC_MAX_NUM
 };