diff --git a/src/capwap/timer.h b/src/capwap/timer.h
new file mode 100644
index 00000000..e29b8f82
--- /dev/null
+++ b/src/capwap/timer.h
@@ -0,0 +1,37 @@
+#ifndef __CW_TIMER_H
+#define __CW_TIMER_H
+
+#include <time.h>
+
+/** 
+ * @defgroup TimerFunctions Timer functions
+ * @{
+ */
+
+/**
+ * Start a timer.
+ * @param t number of seconds until the timer expires
+ * @return timer value to initialize a variable of time_t
+ *
+ * Example: time_t timer = cw_timer_start(60);
+ */
+#define cw_timer_start(t) (time(NULL)+t)
+
+/**
+ * Check if a timer is expired.
+ * @param t an time_t variable intializes by #cw_timer_start
+ * @return 0=timer is not expired\n 1=timer is expired.
+ */
+#define cw_timer_timeout(t) (time(NULL)>t ? 1 : 0)
+
+
+#define cw_clock_start()\
+	clock()
+
+#define cw_clock_stop(t)\
+	(((double) (clock()-(t))) / CLOCKS_PER_SEC)
+
+/** @} */
+
+
+#endif