From 06cfea692bd5fb322b8e16a27e336042f6ba422f Mon Sep 17 00:00:00 2001
From: George Oikonomou <g.oikonomou@bristol.ac.uk>
Date: Sun, 15 Feb 2015 17:38:59 +0100
Subject: [PATCH] Document a macro

---
 core/net/ip/uip.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/net/ip/uip.h b/core/net/ip/uip.h
index f4a433577..78ebfef59 100644
--- a/core/net/ip/uip.h
+++ b/core/net/ip/uip.h
@@ -393,8 +393,10 @@ void uip_setipid(uint16_t id);
     uip_process(UIP_TIMER); } while (0)
 
 /**
+ * Macro to determine whether a specific uIP connection is active
  *
- *
+ * \param conn The connection's number
+ * \retval 0 Connection closed
  */
 #define uip_conn_active(conn) (uip_conns[conn].tcpstateflags != UIP_CLOSED)