Beacon frame protection event for incorrect protection

Define a driver interface event for Beacon frame protection failures.
Report such events over the control interface and send a
WNM-Notification Request frame to the AP as well.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>

src/common/ieee802_11_defs.h

@@ -1881,6 +1881,13 @@ enum wnm_sleep_mode_subelement_id {
 	WNM_SLEEP_SUBELEM_BIGTK = 2,
 };
 
+/* WNM notification type (IEEE P802.11-REVmd/D3.0, Table 9-430) */
+enum wnm_notification_Type {
+	WNM_NOTIF_TYPE_FIRMWARE_UPDATE = 0,
+	WNM_NOTIF_TYPE_BEACON_PROTECTION_FAILURE = 2,
+	WNM_NOTIF_TYPE_VENDOR_SPECIFIC = 221,
+};
+
 /* Channel Switch modes (802.11h) */
 #define CHAN_SWITCH_MODE_ALLOW_TX	0
 #define CHAN_SWITCH_MODE_BLOCK_TX	1

src/common/wpa_ctrl.h

@@ -95,6 +95,8 @@ extern "C" {
 /** SAE authentication failed due to unknown password identifier */
 #define WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER \
 	"CTRL-EVENT-SAE-UNKNOWN-PASSWORD-IDENTIFIER "
+/** Unprotected Beacon frame dropped */
+#define WPA_EVENT_UNPROT_BEACON "CTRL-EVENT-UNPROT-BEACON "
 
 /** IP subnet status change notification
  *

src/drivers/driver.h

@@ -4970,6 +4970,15 @@ enum wpa_event_type {
 	  * EVENT_UPDATE_DH - Notification of updated DH information
 	  */
 	EVENT_UPDATE_DH,
+
+	/**
+	 * EVENT_UNPROT_BEACON - Unprotected Beacon frame received
+	 *
+	 * This event should be called when a Beacon frame is dropped due to it
+	 * not being protected correctly. union wpa_event_data::unprot_beacon
+	 * is required to provide more details of the frame.
+	 */
+	EVENT_UNPROT_BEACON,
 };
 
 
@@ -5822,6 +5831,13 @@ union wpa_event_data {
 		const u8 *ie;
 		size_t ie_len;
 	} update_dh;
+
+	/**
+	 * struct unprot_beacon - Data for EVENT_UNPROT_BEACON
+	 */
+	struct unprot_beacon {
+		const u8 *sa;
+	} unprot_beacon;
 };
 
 /**

src/drivers/driver_common.c

@@ -89,6 +89,7 @@ const char * event_to_string(enum wpa_event_type event)
 	E2S(INTERFACE_MAC_CHANGED);
 	E2S(WDS_STA_INTERFACE_STATUS);
 	E2S(UPDATE_DH);
+	E2S(UNPROT_BEACON);
 	}
 
 	return "UNKNOWN";