Add missing #defines used by fd_device.c.

diff --git a/src/ethernet.h b/src/ethernet.h
index 2165c51..0b4a1db 100644 (file)
--- a/src/ethernet.h
+++ b/src/ethernet.h
@@ -25,6 +25,15 @@
 #define ETH_ALEN 6
 #endif
 
+#ifndef ETH_HLEN
+#define ETH_HLEN 14
+#endif
+
+#ifndef ETHER_TYPE_LEN
+#define ETHER_TYPE_LEN 2
+#endif
+
+
 #ifndef ARPHRD_ETHER
 #define ARPHRD_ETHER 1
 #endif