AP: Disable VHT in TKIP-only configuration

This has already been done for WEP, but there's same constraint for not
allowing VTH rates in case of TKIP.

Signed-off-by: Filip Matusiak <filip.matusiak@tieto.com>

src/ap/ap_config.c

@@ -848,6 +848,16 @@ static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
 		wpa_printf(MSG_ERROR,
 			   "VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities");
 	}
+
+	if (full_config && conf->ieee80211ac && bss->wpa &&
+	    !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
+	    !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
+				   WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
+	{
+		bss->disable_11ac = 1;
+		wpa_printf(MSG_ERROR,
+			   "VHT (IEEE 802.11ac) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling VHT capabilities");
+	}
 #endif /* CONFIG_IEEE80211AC */
 
 #ifdef CONFIG_WPS