Fix some "little" build problems, and a redundancy call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input().

If LINK_STATS was defined, tcpip.c couldn't be build.
Even if IP_FRAG or IP_REASSEMBLY were set, ip_frag.c functions are not build.

CHANGELOG

@@ -42,6 +42,10 @@ HISTORY
 
   ++ Bug fixes:
   
+  2007-03-06 Frédéric Bernon, Dmitry Potapov
+  * tcpip.c, ip_frag.c, ethernetif.c: Fix some build problems, and a redundancy
+    call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input().
+
   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

src/api/tcpip.c

@@ -111,10 +111,6 @@ ethernet_input(struct pbuf *p, struct netif *netif)
   /* points to packet payload, which starts with an Ethernet header */
   ethhdr = p->payload;
   
-#if LINK_STATS
-  lwip_stats.link.recv++;
-#endif /* LINK_STATS */
-    
   switch (htons(ethhdr->type)) {
     /* IP packet? */
     case ETHTYPE_IP:

src/core/ipv4/ip_frag.c

@@ -37,8 +37,6 @@
  * 
  */
 
-#if (IP_FRAG || IP_REASSEMBLY)
-
 #include <string.h>
 
 #include "lwip/opt.h"
@@ -48,6 +46,8 @@
 #include "lwip/snmp.h"
 #include "lwip/stats.h"
 
+#if (IP_FRAG || IP_REASSEMBLY)
+
 static u8_t ip_reassbuf[IP_HLEN + IP_REASS_BUFSIZE];
 static u8_t ip_reassbitmap[IP_REASS_BUFSIZE / (8 * 8) + 1];
 static const u8_t bitmap_bits[8] = { 0xff, 0x7f, 0x3f, 0x1f,

src/netif/ethernetif.c

@@ -230,12 +230,6 @@ ethernetif_input(struct netif *netif)
   /* points to packet payload, which starts with an Ethernet header */
   ethhdr = p->payload;
   
-#if LINK_STATS
-  lwip_stats.link.recv++;
-#endif /* LINK_STATS */
-
-  ethhdr = p->payload;
-    
   switch (htons(ethhdr->type)) {
 
 #if ETHARP_TCPIP_ETHINPUT