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+/*
+ * Copyright (c) 1993, 1994, 1996
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*
+ * Maximum length of the length field in an Ethernet header; any value
+ * greater than this is not a length value, so it's either an Ethernet
+ * type or an invalid value.
+ */
+#define MAX_ETHERNET_LENGTH_VAL 1500
+
+/*
+ * Ethernet types.
+ *
+ * We wrap the declarations with #ifdef, so that if a file includes
+ * <netinet/if_ether.h>, which may declare some of these, we don't
+ * get a bunch of complaints from the C compiler about redefinitions
+ * of these values.
+ *
+ * We declare all of them here so that no file has to include
+ * <netinet/if_ether.h> if all it needs are ETHERTYPE_ values.
+ */
+
+#ifndef ETHERTYPE_LEN
+#define ETHERTYPE_LEN 2
+#endif
+
+#ifndef ETHERTYPE_GRE_ISO
+#define ETHERTYPE_GRE_ISO 0x00FE /* not really an ethertype only used in GRE */
+#endif
+#ifndef ETHERTYPE_PUP
+#define ETHERTYPE_PUP 0x0200 /* PUP protocol */
+#endif
+#ifndef ETHERTYPE_IP
+#define ETHERTYPE_IP 0x0800 /* IP protocol */
+#endif
+#ifndef ETHERTYPE_ARP
+#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */
+#endif
+#ifndef ETHERTYPE_REVARP
+#define ETHERTYPE_REVARP 0x8035 /* reverse Addr. resolution protocol */
+#endif
+#ifndef ETHERTYPE_NS
+#define ETHERTYPE_NS 0x0600
+#endif
+#ifndef ETHERTYPE_SPRITE
+#define ETHERTYPE_SPRITE 0x0500
+#endif
+#ifndef ETHERTYPE_TRAIL
+#define ETHERTYPE_TRAIL 0x1000
+#endif
+#ifndef ETHERTYPE_MOPDL
+#define ETHERTYPE_MOPDL 0x6001
+#endif
+#ifndef ETHERTYPE_MOPRC
+#define ETHERTYPE_MOPRC 0x6002
+#endif
+#ifndef ETHERTYPE_DN
+#define ETHERTYPE_DN 0x6003
+#endif
+#ifndef ETHERTYPE_LAT
+#define ETHERTYPE_LAT 0x6004
+#endif
+#ifndef ETHERTYPE_SCA
+#define ETHERTYPE_SCA 0x6007
+#endif
+#ifndef ETHERTYPE_TEB
+#define ETHERTYPE_TEB 0x6558
+#endif
+#ifndef ETHERTYPE_LANBRIDGE
+#define ETHERTYPE_LANBRIDGE 0x8038
+#endif
+#ifndef ETHERTYPE_DECDNS
+#define ETHERTYPE_DECDNS 0x803c
+#endif
+#ifndef ETHERTYPE_DECDTS
+#define ETHERTYPE_DECDTS 0x803e
+#endif
+#ifndef ETHERTYPE_VEXP
+#define ETHERTYPE_VEXP 0x805b
+#endif
+#ifndef ETHERTYPE_VPROD
+#define ETHERTYPE_VPROD 0x805c
+#endif
+#ifndef ETHERTYPE_ATALK
+#define ETHERTYPE_ATALK 0x809b
+#endif
+#ifndef ETHERTYPE_AARP
+#define ETHERTYPE_AARP 0x80f3
+#endif
+#ifndef ETHERTYPE_TIPC
+#define ETHERTYPE_TIPC 0x88ca
+#endif
+#ifndef ETHERTYPE_8021Q
+#define ETHERTYPE_8021Q 0x8100
+#endif
+
+/* see:
+ https://en.wikipedia.org/wiki/IEEE_802.1Q
+ and https://en.wikipedia.org/wiki/QinQ
+*/
+#ifndef ETHERTYPE_8021Q9100
+#define ETHERTYPE_8021Q9100 0x9100
+#endif
+#ifndef ETHERTYPE_8021Q9200
+#define ETHERTYPE_8021Q9200 0x9200
+#endif
+#ifndef ETHERTYPE_8021QinQ
+#define ETHERTYPE_8021QinQ 0x88a8
+#endif
+#ifndef ETHERTYPE_MACSEC
+#define ETHERTYPE_MACSEC 0x88e5
+#endif
+#ifndef ETHERTYPE_IPX
+#define ETHERTYPE_IPX 0x8137
+#endif
+#ifndef ETHERTYPE_IPV6
+#define ETHERTYPE_IPV6 0x86dd
+#endif
+#ifndef ETHERTYPE_PPP
+#define ETHERTYPE_PPP 0x880b
+#endif
+#ifndef ETHERTYPE_MPCP
+#define ETHERTYPE_MPCP 0x8808
+#endif
+#ifndef ETHERTYPE_SLOW
+#define ETHERTYPE_SLOW 0x8809
+#endif
+#ifndef ETHERTYPE_MPLS
+#define ETHERTYPE_MPLS 0x8847
+#endif
+#ifndef ETHERTYPE_MPLS_MULTI
+#define ETHERTYPE_MPLS_MULTI 0x8848
+#endif
+#ifndef ETHERTYPE_PPPOED
+#define ETHERTYPE_PPPOED 0x8863
+#endif
+#ifndef ETHERTYPE_PPPOES
+#define ETHERTYPE_PPPOES 0x8864
+#endif
+#ifndef ETHERTYPE_NSH
+#define ETHERTYPE_NSH 0x894F
+#endif
+#ifndef ETHERTYPE_PPPOED2
+#define ETHERTYPE_PPPOED2 0x3c12
+#endif
+#ifndef ETHERTYPE_PPPOES2
+#define ETHERTYPE_PPPOES2 0x3c13
+#endif
+#ifndef ETHERTYPE_MS_NLB_HB
+#define ETHERTYPE_MS_NLB_HB 0x886f /* MS Network Load Balancing Heartbeat */
+#endif
+#ifndef ETHERTYPE_JUMBO
+#define ETHERTYPE_JUMBO 0x8870
+#endif
+#ifndef ETHERTYPE_LLDP
+#define ETHERTYPE_LLDP 0x88cc
+#endif
+#ifndef ETHERTYPE_EAPOL
+#define ETHERTYPE_EAPOL 0x888e
+#endif
+#ifndef ETHERTYPE_REALTEK
+#define ETHERTYPE_REALTEK 0x8899 /* Realtek layer 2 protocols and switch tags */
+#endif
+#ifndef ETHERTYPE_AOE
+#define ETHERTYPE_AOE 0x88a2
+#endif
+#ifndef ETHERTYPE_PTP
+#define ETHERTYPE_PTP 0x88f7
+#endif
+#ifndef ETHERTYPE_LOOPBACK
+#define ETHERTYPE_LOOPBACK 0x9000
+#endif
+#ifndef ETHERTYPE_VMAN
+#define ETHERTYPE_VMAN 0x9100 /* Extreme VMAN Protocol */
+#endif
+#ifndef ETHERTYPE_CFM_OLD
+#define ETHERTYPE_CFM_OLD 0xabcd /* 802.1ag depreciated */
+#endif
+#ifndef ETHERTYPE_CFM
+#define ETHERTYPE_CFM 0x8902 /* 802.1ag */
+#endif
+#ifndef ETHERTYPE_IEEE1905_1
+#define ETHERTYPE_IEEE1905_1 0x893a /* IEEE 1905.1 */
+#endif
+#ifndef ETHERTYPE_ISO
+#define ETHERTYPE_ISO 0xfefe /* nonstandard - used in Cisco HDLC encapsulation */
+#endif
+#ifndef ETHERTYPE_CALM_FAST
+#define ETHERTYPE_CALM_FAST 0x1111 /* ISO CALM FAST */
+#endif
+#ifndef ETHERTYPE_GEONET_OLD
+#define ETHERTYPE_GEONET_OLD 0x0707 /* ETSI GeoNetworking (before Jan 2013) */
+#endif
+#ifndef ETHERTYPE_GEONET
+#define ETHERTYPE_GEONET 0x8947 /* ETSI GeoNetworking (Official IEEE registration from Jan 2013) */
+#endif
+#ifndef ETHERTYPE_ARISTA
+#define ETHERTYPE_ARISTA 0xd28b /* Arista Networks vendor specific EtherType */
+#endif
+
+extern const struct tok ethertype_values[];