wifi: mt76: mt792x: Limit the concurrent STA and SoftAP to operate on the same channel

Due to the lack of NoA(Notice of Absence) mechanism in SoftAP mode, it is
inappropriate to allow concurrent SoftAP and STA to operate on the
different channels.

This patch restricts the concurrent SoftAP and STA to be setup on the same
channel only.

Signed-off-by: Leon Yen <[email protected]>
Signed-off-by: Ming Yen Hsieh <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>

Author: leon-yen

drivers/net/wireless/mediatek/mt76/mt792x_core.c

@@ -28,16 +28,31 @@ static const struct ieee80211_iface_combination if_comb[] = {
 	},
 };
 
-static const struct ieee80211_iface_limit if_limits_chanctx[] = {
+static const struct ieee80211_iface_limit if_limits_chanctx_mcc[] = {
 	{
 		.max = 2,
 		.types = BIT(NL80211_IFTYPE_STATION) |
 			 BIT(NL80211_IFTYPE_P2P_CLIENT)
 	},
 	{
 		.max = 1,
-		.types = BIT(NL80211_IFTYPE_AP) |
-			 BIT(NL80211_IFTYPE_P2P_GO)
+		.types = BIT(NL80211_IFTYPE_P2P_GO)
+	},
+	{
+		.max = 1,
+		.types = BIT(NL80211_IFTYPE_P2P_DEVICE)
+	}
+};
+
+static const struct ieee80211_iface_limit if_limits_chanctx_scc[] = {
+	{
+		.max = 2,
+		.types = BIT(NL80211_IFTYPE_STATION) |
+			 BIT(NL80211_IFTYPE_P2P_CLIENT)
+	},
+	{
+		.max = 1,
+		.types = BIT(NL80211_IFTYPE_AP)
 	},
 	{
 		.max = 1,
@@ -47,11 +62,18 @@ static const struct ieee80211_iface_limit if_limits_chanctx[] = {
 
 static const struct ieee80211_iface_combination if_comb_chanctx[] = {
 	{
-		.limits = if_limits_chanctx,
-		.n_limits = ARRAY_SIZE(if_limits_chanctx),
+		.limits = if_limits_chanctx_mcc,
+		.n_limits = ARRAY_SIZE(if_limits_chanctx_mcc),
 		.max_interfaces = 3,
 		.num_different_channels = 2,
 		.beacon_int_infra_match = false,
+	},
+	{
+		.limits = if_limits_chanctx_scc,
+		.n_limits = ARRAY_SIZE(if_limits_chanctx_scc),
+		.max_interfaces = 3,
+		.num_different_channels = 1,
+		.beacon_int_infra_match = false,
 	}
 };