[SRU][Q][PATCH 1/1] wifi: mt76: mt7925: add MBSSID support

[Mitchell Augustin]

From: Ming Yen Hsieh <mingyen.hsieh at mediatek.com>

BugLink: https://bugs.launchpad.net/bugs/2119479

Enable MBSSID support for MT7925 by setting the
appropriate capability to the firmware.

Signed-off-by: Ming Yen Hsieh <mingyen.hsieh at mediatek.com>
Link: https://patch.msgid.link/20250729084932.264155-1-mingyen.hsieh@mediatek.com
Signed-off-by: Felix Fietkau <nbd at nbd.name>
(cherry picked from commit 74e756b9e28af3ee94a7ea480bb39694be5fbd96)
Signed-off-by: Mitchell Augustin <mitchell.augustin at canonical.com>
---
 .../net/wireless/mediatek/mt76/mt7925/main.c  |  1 +
 .../net/wireless/mediatek/mt76/mt7925/mcu.c   | 23 ++++++++++++++++++-
 .../net/wireless/mediatek/mt76/mt792x_core.c  |  7 +++++-
 3 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/main.c b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
index b0e053b15227..c7903972b1d5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
@@ -240,6 +240,7 @@ int mt7925_init_mlo_caps(struct mt792x_phy *phy)
 {
 	struct wiphy *wiphy = phy->mt76->hw->wiphy;
 	static const u8 ext_capa_sta[] = {
+		[2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT,
 		[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
 	};
 	static struct wiphy_iftype_ext_capab ext_capab[] = {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index cd457be26523..10d68d241ba1 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -2621,6 +2621,25 @@ mt7925_mcu_bss_qos_tlv(struct sk_buff *skb, struct ieee80211_bss_conf *link_conf
 	qos->qos = link_conf->qos;
 }
 
+static void
+mt7925_mcu_bss_mbssid_tlv(struct sk_buff *skb, struct ieee80211_bss_conf *link_conf,
+			  bool enable)
+{
+	struct bss_info_uni_mbssid *mbssid;
+	struct tlv *tlv;
+
+	if (!enable && !link_conf->bssid_indicator)
+		return;
+
+	tlv = mt76_connac_mcu_add_tlv(skb, UNI_BSS_INFO_11V_MBSSID,
+				      sizeof(*mbssid));
+
+	mbssid = (struct bss_info_uni_mbssid *)tlv;
+	mbssid->max_indicator = link_conf->bssid_indicator;
+	mbssid->mbss_idx = link_conf->bssid_index;
+	mbssid->tx_bss_omac_idx = 0;
+}
+
 static void
 mt7925_mcu_bss_he_tlv(struct sk_buff *skb, struct ieee80211_bss_conf *link_conf,
 		      struct mt792x_phy *phy)
@@ -2787,8 +2806,10 @@ int mt7925_mcu_add_bss_info(struct mt792x_phy *phy,
 		mt7925_mcu_bss_color_tlv(skb, link_conf, enable);
 	}
 
-	if (enable)
+	if (enable) {
 		mt7925_mcu_bss_rlm_tlv(skb, phy->mt76, link_conf, ctx);
+		mt7925_mcu_bss_mbssid_tlv(skb, link_conf, enable);
+	}
 
 	return mt76_mcu_skb_send_msg(&dev->mt76, skb,
 				     MCU_UNI_CMD(BSS_INFO_UPDATE), true);
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_core.c b/drivers/net/wireless/mediatek/mt76/mt792x_core.c
index e3a703398b30..44378f7394e8 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x_core.c
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_core.c
@@ -689,8 +689,13 @@ int mt792x_init_wiphy(struct ieee80211_hw *hw)
 	ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
 	ieee80211_hw_set(hw, CONNECTION_MONITOR);
 	ieee80211_hw_set(hw, NO_VIRTUAL_MONITOR);
-	if (is_mt7921(&dev->mt76))
+
+	if (is_mt7921(&dev->mt76)) {
 		ieee80211_hw_set(hw, CHANCTX_STA_CSA);
+	} else {
+		ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
+		ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID);
+	}
 
 	if (dev->pm.enable)
 		ieee80211_hw_set(hw, CONNECTION_MONITOR);
-- 
2.43.0