hostapd: add config symbol to enable MBO

Multi Band Operation aka Agile Multiband introduces new Transition
and Transition Rejection Reason Codes that should improve client
steering. Add a config symbol to enable it, and enable it by default for
the full variants.

Signed-off-by: Stijn Tintel <[email protected]>
Acked-by: David Bauer <[email protected]>

package/network/services/hostapd/Config.in

@@ -87,3 +87,17 @@ config WPA_ENABLE_WEP
 	  for anything anymore. The functionality needed to use WEP is available in the
 	  current hostapd release under this optional build parameter and completely
 	  removed in a future release.
+
+config WPA_MBO_SUPPORT
+	bool "Multi Band Operation (Agile Multiband)"
+	default PACKAGE_wpa-supplicant || \
+		PACKAGE_wpa-supplicant-openssl || \
+		PACKAGE_wpa-supplicant-wolfssl || \
+		PACKAGE_wpad || \
+		PACKAGE_wpad-openssl || \
+		PACKAGE_wpad-wolfssl
+	help
+	  Multi Band Operation aka (Agile Multiband) enables features
+	  that facilitate efficient use of multiple frequency bands.
+	  Enabling MBO on an AP using RSN requires 802.11w to be enabled.
+	  Hostapd will refuse to start if MBO and RSN are enabled without 11w.

package/network/services/hostapd/Makefile

@@ -91,6 +91,7 @@ DRIVER_MAKEOPTS= \
 	CONFIG_IEEE80211AC=$(HOSTAPD_IEEE80211AC) \
 	CONFIG_IEEE80211AX=$(HOSTAPD_IEEE80211AX) \
 	CONFIG_DRIVER_WEXT=$(CONFIG_DRIVER_WEXT_SUPPORT) \
+	CONFIG_MBO=$(CONFIG_WPA_MBO_SUPPORT)
 
 ifeq ($(SSL_VARIANT),openssl)
   DRIVER_MAKEOPTS += CONFIG_TLS=openssl CONFIG_SAE=y