add ETHERTYPE_8021Q

diff --git a/sys/netinet/if_ether.h b/sys/netinet/if_ether.h
index fa991bd..a8b6673 100644 (file)
--- a/sys/netinet/if_ether.h
+++ b/sys/netinet/if_ether.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: if_ether.h,v 1.11 2000/02/10 05:49:28 jason Exp $     */
+/*     $OpenBSD: if_ether.h,v 1.12 2000/03/07 18:15:47 chris Exp $     */
 /*     $NetBSD: if_ether.h,v 1.22 1996/05/11 13:00:00 mycroft Exp $    */
 
 /*
@@ -49,6 +49,21 @@ struct ether_addr {
  */
 #define        ETHER_ADDR_LEN  6
 
+/*
+ * The number of bytes in the type field.
+ */
+#define ETHER_TYPE_LEN 2
+
+/*
+ * The number of bytes in the trailing CRC field.
+ */
+#define ETHER_CRC_LEN  4
+
+/*
+ * The length of the combined header.
+ */
+#define ETHER_HDR_LEN  (ETHER_ADDR_LEN*2+ETHER_TYPE_LEN)
+
 struct ether_header {
        u_int8_t  ether_dhost[ETHER_ADDR_LEN];
        u_int8_t  ether_shost[ETHER_ADDR_LEN];
@@ -59,9 +74,11 @@ struct       ether_header {
 #define        ETHERTYPE_IP            0x0800  /* IP protocol */
 #define        ETHERTYPE_ARP           0x0806  /* address resolution protocol */
 #define        ETHERTYPE_REVARP        0x8035  /* reverse addr resolution protocol */
+#define        ETHERTYPE_8021Q         0x8100  /* IEEE 802.1Q VLAN tagging */
 #define        ETHERTYPE_IPV6          0x86DD  /* IPv6 protocol */
 #define        ETHERTYPE_PPPOEDISC     0x8863  /* PPP Over Ethernet Discovery Stage */
 #define        ETHERTYPE_PPPOE         0x8864  /* PPP Over Ethernet Session Stage */
+#define        ETHERTYPE_LOOPBACK      0x9000  /* used to test interfaces */
 
 /*
  * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have