mt76: mt7915: update max_mpdu_size in mt7915_mcu_sta_amsdu_tlv()

The maximum max_mpdu_size of mt7915 is 7991, whereas mt7916 can
support 11454.
Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/mcu.c

@@ -978,8 +978,8 @@ mt7915_mcu_sta_vht_tlv(struct sk_buff *skb, struct ieee80211_sta *sta)
 }
 
 static void
-mt7915_mcu_sta_amsdu_tlv(struct sk_buff *skb, struct ieee80211_vif *vif,
-			 struct ieee80211_sta *sta)
+mt7915_mcu_sta_amsdu_tlv(struct mt7915_dev *dev, struct sk_buff *skb,
+			 struct ieee80211_vif *vif, struct ieee80211_sta *sta)
 {
 	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
 	struct sta_rec_amsdu *amsdu;
@@ -996,9 +996,24 @@ mt7915_mcu_sta_amsdu_tlv(struct sk_buff *skb, struct ieee80211_vif *vif,
 	amsdu = (struct sta_rec_amsdu *)tlv;
 	amsdu->max_amsdu_num = 8;
 	amsdu->amsdu_en = true;
-	amsdu->max_mpdu_size = sta->max_amsdu_len >=
-			       IEEE80211_MAX_MPDU_LEN_VHT_7991;
 	msta->wcid.amsdu = true;
+
+	switch (sta->max_amsdu_len) {
+	case IEEE80211_MAX_MPDU_LEN_VHT_11454:
+		if (!is_mt7915(&dev->mt76)) {
+			amsdu->max_mpdu_size =
+				IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454;
+			return;
+		}
+		fallthrough;
+	case IEEE80211_MAX_MPDU_LEN_HT_7935:
+	case IEEE80211_MAX_MPDU_LEN_VHT_7991:
+		amsdu->max_mpdu_size = IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991;
+		return;
+	default:
+		amsdu->max_mpdu_size = IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895;
+		return;
+	}
 }
 
 static int
@@ -1680,7 +1695,7 @@ int mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
 
 	if (sta && sta->ht_cap.ht_supported) {
 		/* starec amsdu */
-		mt7915_mcu_sta_amsdu_tlv(skb, vif, sta);
+		mt7915_mcu_sta_amsdu_tlv(dev, skb, vif, sta);
 		/* starec he */
 		mt7915_mcu_sta_he_tlv(skb, sta, vif);
 		/* starec muru */