Changed packet drivers from services to plain processes.

Now tcpip_output() is a function pointer that is supposed to be set via the macro tcpip_set_outputfunc(). Packet drivers do so on process startup.

Thus if there are several packet drivers in a Contiki system the one started last is the one actually used. This behaviour is especially useful for the 'IP forwarding' "meta" packet driver.

core/net/tcpip.c

@@ -30,13 +30,11 @@
  *
  * Author: Adam Dunkels <adam@sics.se>
  *
- * $Id: tcpip.c,v 1.7 2007/05/20 00:04:18 oliverschmidt Exp $
+ * $Id: tcpip.c,v 1.8 2007/05/20 21:29:39 oliverschmidt Exp $
  */
 
-#include "contiki-conf.h"
 #include "contiki-net.h"
 
-#include "net/packet-service.h"
 #include "net/uip-split.h"
 
 #include <string.h>
@@ -66,6 +64,8 @@ enum {
   PACKET_INPUT
 };
 
+u8_t (* tcpip_output)(void); /* Called on IP packet output. */
+
 unsigned char tcpip_do_forwarding; /* Forwarding enabled.   */
 unsigned char tcpip_is_forwarding; /* Forwarding right now? */
 
@@ -103,12 +103,6 @@ packet_input(void)
   }
 }
 /*---------------------------------------------------------------------------*/
-void
-tcpip_output(void)
-{
-  SERVICE_CALL(packet_service, output());
-}
-/*---------------------------------------------------------------------------*/
 struct uip_conn *
 tcp_connect(uip_ipaddr_t *ripaddr, u16_t port, void *appstate)
 {