wifi: mt76: mt7925: update mt7925_mcu_bss_mld_tlv for MLO

update mt7925_mcu_bss_mld_tlv for the MLO-enabled firmware,
the change remains compatible with the non-MLO mode and the
older firmware.
Co-developed-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Co-developed-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/2d89b93bcfd92e7c6987aaa0a3c4637e605ac154.1720248331.git.sean.wang@kernel.orgSigned-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7925/mcu.c

@@ -2393,24 +2393,29 @@ mt7925_mcu_bss_bmc_tlv(struct sk_buff *skb, struct mt792x_phy *phy,
 
 static void
 mt7925_mcu_bss_mld_tlv(struct sk_buff *skb,
-		       struct ieee80211_bss_conf *link_conf,
-		       struct ieee80211_link_sta *link_sta)
+		       struct ieee80211_bss_conf *link_conf)
 {
 	struct mt792x_bss_conf *mconf = mt792x_link_conf_to_mconf(link_conf);
-	bool is_mld = ieee80211_vif_is_mld(link_conf->vif);
+	struct mt792x_vif *mvif = (struct mt792x_vif *)link_conf->vif->drv_priv;
 	struct bss_mld_tlv *mld;
 	struct tlv *tlv;
+	bool is_mld;
+
+	is_mld = ieee80211_vif_is_mld(link_conf->vif) ||
+		 (hweight16(mvif->valid_links) > 1);
 
 	tlv = mt76_connac_mcu_add_tlv(skb, UNI_BSS_INFO_MLD, sizeof(*mld));
 	mld = (struct bss_mld_tlv *)tlv;
 
-	mld->link_id = link_sta ? (is_mld ? link_conf->link_id : 0) : 0xff;
-	mld->group_mld_id = is_mld ? mconf->mt76.idx : 0xff;
+	mld->link_id = is_mld ? link_conf->link_id : 0xff;
+	/* apply the index of the primary link */
+	mld->group_mld_id = is_mld ? mvif->bss_conf.mt76.idx : 0xff;
 	mld->own_mld_id = mconf->mt76.idx + 32;
 	mld->remap_idx = 0xff;
+	mld->eml_enable = !!(link_conf->vif->cfg.eml_cap &
+			     IEEE80211_EML_CAP_EMLSR_SUPP);
 
-	if (link_sta)
-		memcpy(mld->mac_addr, link_sta->addr, ETH_ALEN);
+	memcpy(mld->mac_addr, link_conf->addr, ETH_ALEN);
 }
 
 static void
@@ -2520,10 +2525,9 @@ int mt7925_mcu_add_bss_info(struct mt792x_phy *phy,
 	mt7925_mcu_bss_basic_tlv(skb, link_conf, link_sta, ctx, phy->mt76,
 				 mvif->sta.deflink.wcid.idx, enable);
 	mt7925_mcu_bss_sec_tlv(skb, link_conf);
-
 	mt7925_mcu_bss_bmc_tlv(skb, phy, ctx, link_conf);
 	mt7925_mcu_bss_qos_tlv(skb, link_conf);
-	mt7925_mcu_bss_mld_tlv(skb, link_conf, link_sta);
+	mt7925_mcu_bss_mld_tlv(skb, link_conf);
 	mt7925_mcu_bss_ifs_tlv(skb, link_conf);
 
 	if (link_conf->he_support) {

drivers/net/wireless/mediatek/mt76/mt7925/mcu.h

@@ -366,7 +366,10 @@ struct bss_mld_tlv {
 	u8 mac_addr[ETH_ALEN];
 	u8 remap_idx;
 	u8 link_id;
-	u8 __rsv[2];
+	u8 eml_enable;
+	u8 max_link_num;
+	u8 hybrid_mode;
+	u8 __rsv[3];
 } __packed;
 
 struct sta_rec_ba_uni {