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-rw-r--r--include/net/eth.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/net/eth.h b/include/net/eth.h
index b3273b823f..84384febf2 100644
--- a/include/net/eth.h
+++ b/include/net/eth.h
@@ -32,6 +32,7 @@
 #include "qemu/iov.h"
 
 #define ETH_ALEN 6
+#define ETH_HLEN 14
 
 struct eth_header {
     uint8_t  h_dest[ETH_ALEN];   /* destination eth addr */
@@ -170,7 +171,8 @@ struct tcp_hdr {
 #define IP_HEADER_VERSION(ip)     \
     ((ip->ip_ver_len >> 4)&0xf)
 
-#define ETH_P_IP                  (0x0800)
+#define ETH_P_IP                  (0x0800)      /* Internet Protocol packet  */
+#define ETH_P_ARP                 (0x0806)      /* Address Resolution packet */
 #define ETH_P_IPV6                (0x86dd)
 #define ETH_P_VLAN                (0x8100)
 #define ETH_P_DVLAN               (0x88a8)