P2P: Do not consider the p2p_scan results after p2p_stop_find

If p2p_stop_find is issued after the p2p_scan request is triggered to
the host driver, the obtained scan results are also considered to update
the P2P peer entries. This is not always desired behavior, i.e., it can
be clearer if no P2P-DEVICE-FOUND events are generated based of that
final pending scan.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

wpa_supplicant/ctrl_iface.c

@@ -5035,6 +5035,7 @@ static void p2p_ctrl_flush(struct wpa_supplicant *wpa_s)
 {
 	os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
 	wpa_s->force_long_sd = 0;
+	wpas_p2p_stop_find(wpa_s);
 	if (wpa_s->global->p2p)
 		p2p_flush(wpa_s->global->p2p);
 }

wpa_supplicant/p2p_supplicant.c

@@ -5900,6 +5900,28 @@ int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
 }
 
 
+static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
+					    struct wpa_scan_results *scan_res)
+{
+	wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
+
+	if (wpa_s->p2p_scan_work) {
+		struct wpa_radio_work *work = wpa_s->p2p_scan_work;
+		wpa_s->p2p_scan_work = NULL;
+		radio_work_done(work);
+	}
+
+	if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
+		return;
+
+	/*
+	 * Indicate that results have been processed so that the P2P module can
+	 * continue pending tasks.
+	 */
+	p2p_scan_res_handled(wpa_s->global->p2p);
+}
+
+
 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
 {
 	wpas_p2p_clear_pending_action_tx(wpa_s);
@@ -5909,6 +5931,12 @@ static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
 
 	if (wpa_s->global->p2p)
 		p2p_stop_find(wpa_s->global->p2p);
+
+	if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
+		wpa_printf(MSG_DEBUG,
+			   "P2P: Do not consider the scan results after stop_find");
+		wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
+	}
 }