X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/e89409254248af64db721ede4babbe9fd1753f6c..1cfd6cd2ac8acecbcf16e083a6cd272a19ec994e:/ether.h

diff --git a/ether.h b/ether.h
index 44081680..64916789 100644
--- a/ether.h
+++ b/ether.h
@@ -33,10 +33,6 @@
  *	@(#)if_ether.h	8.3 (Berkeley) 5/2/95
  */
 
-#if 0
-#include <net/if_arp.h>
-#endif
-
 #define	ETHERMTU	1500
 
 /*
@@ -45,17 +41,17 @@
 #define	ETHER_ADDR_LEN		6
 
 /*
- * Ethernet address - 6 octets
+ * Structure of an Ethernet header.
  */
-struct ether_addr {
-	u_char	ether_addr_octet[ETHER_ADDR_LEN];
+struct	ether_header {
+	uint8_t		ether_dhost[ETHER_ADDR_LEN];
+	uint8_t		ether_shost[ETHER_ADDR_LEN];
+	uint16_t	ether_length_type;
 };
 
 /*
- * Structure of a 10Mb/s Ethernet header.
+ * Length of an Ethernet header; note that some compilers may pad
+ * "struct ether_header" to a multiple of 4 bytes, for example, so
+ * "sizeof (struct ether_header)" may not give the right answer.
  */
-struct	ether_header {
-	u_char	ether_dhost[ETHER_ADDR_LEN];
-	u_char	ether_shost[ETHER_ADDR_LEN];
-	u_short	ether_type;
-};
+#define ETHER_HDRLEN		14