P2P: Allow immediate group idle timeout configuration

A special value p2p_group_idle=-1 can now be used to configure the P2P
group idle mechanism to terminate a P2P client group immediately on any
disconnection after the completion of the initial 4-way handshake.

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

wpa_supplicant/config.h

@@ -526,9 +526,12 @@ struct wpa_config {
 	 * state indefinitely until explicitly removed. As a P2P client, the
 	 * maximum idle time of P2P_MAX_CLIENT_IDLE seconds is enforced, i.e.,
 	 * this parameter is mainly meant for GO use and for P2P client, it can
-	 * only be used to reduce the default timeout to smaller value.
+	 * only be used to reduce the default timeout to smaller value. A
+	 * special value -1 can be used to configure immediate removal of the
+	 * group for P2P client role on any disconnection after the data
+	 * connection has been established.
 	 */
-	unsigned int p2p_group_idle;
+	int p2p_group_idle;
 
 	/**
 	 * bss_max_count - Maximum number of BSS entries to keep in memory

wpa_supplicant/p2p_supplicant.c

@@ -4124,7 +4124,7 @@ static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
 
 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
 {
-	unsigned int timeout;
+	int timeout;
 
 	if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 		wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
@@ -4140,6 +4140,13 @@ static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
 	if (timeout == 0)
 		return;
 
+	if (timeout < 0) {
+		if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
+			timeout = 0; /* special client mode no-timeout */
+		else
+			return;
+	}
+
 	if (wpa_s->p2p_in_provisioning) {
 		/*
 		 * Use the normal group formation timeout during the