Reduce code size: don't include code in those files if IP_FRAG == 0 and IP_REASSEMBLY == 0

CHANGELOG

@@ -38,6 +38,10 @@ HISTORY
 
   ++ Bug fixes:
 
+  2007-03-06 Simon Goldschmidt
+  * ip_frag.c, ip_frag.h: Reduce code size: don't include code in those files
+    if IP_FRAG == 0 and IP_REASSEMBLY == 0
+
   2007-03-06 Frédéric Bernon, Simon Goldschmidt
   * opt.h, ip_frag.h, tcpip.h, tcpip.c, ethernetif.c: add new configuration
     option named ETHARP_TCPIP_ETHINPUT, which enable the new tcpip_ethinput.

src/core/ipv4/ip_frag.c

@@ -37,6 +37,8 @@
  * 
  */
 
+#if (IP_FRAG || IP_REASSEMBLY)
+
 #include <string.h>
 
 #include "lwip/opt.h"
@@ -386,3 +388,5 @@ ip_frag(struct pbuf *p, struct netif *netif, struct ip_addr *dest)
   snmp_inc_ipfragoks();
   return ERR_OK;
 }
+
+#endif /* IP_FRAG || IP_REASSEMBLY */

src/include/ipv4/lwip/ip_frag.h

@@ -33,6 +33,8 @@
 #ifndef __LWIP_IP_FRAG_H__
 #define __LWIP_IP_FRAG_H__
 
+#if (IP_FRAG || IP_REASSEMBLY)
+
 #include "lwip/opt.h"
 #include "lwip/err.h"
 #include "lwip/pbuf.h"
@@ -47,6 +49,6 @@ void ip_reass_tmr(void);
 struct pbuf * ip_reass(struct pbuf *p);
 err_t ip_frag(struct pbuf *p, struct netif *netif, struct ip_addr *dest);
 
-#endif /* __LWIP_IP_FRAG_H__ */
-
+#endif /* IP_FRAG || IP_REASSEMBLY */
 
+#endif /* __LWIP_IP_FRAG_H__ */