ETH

pub const ETH = struct {
    /// Octets in one ethernet addr
    pub const ALEN = 6;
    /// Octets in ethernet type field
    pub const TLEN = 2;
    /// Total octets in header
    pub const HLEN = 14;
    /// Min. octets in frame sans FC
    pub const ZLEN = 60;
    /// Max. octets in payload
    pub const DATA_LEN = 1500;
    /// Max. octets in frame sans FCS
    pub const FRAME_LEN = 1514;
    /// Octets in the FCS
    pub const FCS_LEN = 4;

    /// Min IPv4 MTU per RFC791
    pub const MIN_MTU = 68;
    /// 65535, same as IP_MAX_MTU
    pub const MAX_MTU = 0xFFFF;

    /// These are the defined Ethernet Protocol ID's.
    pub const P = struct {
        /// Ethernet Loopback packet
        pub const LOOP = 0x0060;
        /// Xerox PUP packet
        pub const PUP = 0x0200;
        /// Xerox PUP Addr Trans packet
        pub const PUPAT = 0x0201;
        /// TSN (IEEE 1722) packet
        pub const TSN = 0x22F0;
        /// ERSPAN version 2 (type III)
        pub const ERSPAN2 = 0x22EB;
        /// Internet Protocol packet
        pub const IP = 0x0800;
        /// CCITT X.25
        pub const X25 = 0x0805;
        /// Address Resolution packet
        pub const ARP = 0x0806;
        /// G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ]
        pub const BPQ = 0x08FF;
        /// Xerox IEEE802.3 PUP packet
        pub const IEEEPUP = 0x0a00;
        /// Xerox IEEE802.3 PUP Addr Trans packet
        pub const IEEEPUPAT = 0x0a01;
        /// B.A.T.M.A.N.-Advanced packet [ NOT AN OFFICIALLY REGISTERED ID ]
        pub const BATMAN = 0x4305;
        /// DEC Assigned proto
        pub const DEC = 0x6000;
        /// DEC DNA Dump/Load
        pub const DNA_DL = 0x6001;
        /// DEC DNA Remote Console
        pub const DNA_RC = 0x6002;
        /// DEC DNA Routing
        pub const DNA_RT = 0x6003;
        /// DEC LAT
        pub const LAT = 0x6004;
        /// DEC Diagnostics
        pub const DIAG = 0x6005;
        /// DEC Customer use
        pub const CUST = 0x6006;
        /// DEC Systems Comms Arch
        pub const SCA = 0x6007;
        /// Trans Ether Bridging
        pub const TEB = 0x6558;
        /// Reverse Addr Res packet
        pub const RARP = 0x8035;
        /// Appletalk DDP
        pub const ATALK = 0x809B;
        /// Appletalk AARP
        pub const AARP = 0x80F3;
        /// 802.1Q VLAN Extended Header
        pub const P_8021Q = 0x8100;
        /// ERSPAN type II
        pub const ERSPAN = 0x88BE;
        /// IPX over DIX
        pub const IPX = 0x8137;
        /// IPv6 over bluebook
        pub const IPV6 = 0x86DD;
        /// IEEE Pause frames. See 802.3 31B
        pub const PAUSE = 0x8808;
        /// Slow Protocol. See 802.3ad 43B
        pub const SLOW = 0x8809;
        /// Web-cache coordination protocol defined in draft-wilson-wrec-wccp-v2-00.txt
        pub const WCCP = 0x883E;
        /// MPLS Unicast traffic
        pub const MPLS_UC = 0x8847;
        /// MPLS Multicast traffic
        pub const MPLS_MC = 0x8848;
        /// MultiProtocol Over ATM
        pub const ATMMPOA = 0x884c;
        /// PPPoE discovery messages
        pub const PPP_DISC = 0x8863;
        /// PPPoE session messages
        pub const PPP_SES = 0x8864;
        /// HPNA, wlan link local tunnel
        pub const LINK_CTL = 0x886c;
        /// Frame-based ATM Transport over Ethernet
        pub const ATMFATE = 0x8884;
        /// Port Access Entity (IEEE 802.1X)
        pub const PAE = 0x888E;
        /// PROFINET
        pub const PROFINET = 0x8892;
        /// Multiple proprietary protocols
        pub const REALTEK = 0x8899;
        /// ATA over Ethernet
        pub const AOE = 0x88A2;
        /// EtherCAT
        pub const ETHERCAT = 0x88A4;
        /// 802.1ad Service VLAN
        pub const @"8021AD" = 0x88A8;
        /// 802.1 Local Experimental 1.
        pub const @"802_EX1" = 0x88B5;
        /// 802.11 Preauthentication
        pub const PREAUTH = 0x88C7;
        /// TIPC
        pub const TIPC = 0x88CA;
        /// Link Layer Discovery Protocol
        pub const LLDP = 0x88CC;
        /// Media Redundancy Protocol
        pub const MRP = 0x88E3;
        /// 802.1ae MACsec
        pub const MACSEC = 0x88E5;
        /// 802.1ah Backbone Service Tag
        pub const @"8021AH" = 0x88E7;
        /// 802.1Q MVRP
        pub const MVRP = 0x88F5;
        /// IEEE 1588 Timesync
        pub const @"1588" = 0x88F7;
        /// NCSI protocol
        pub const NCSI = 0x88F8;
        /// IEC 62439-3 PRP/HSRv0
        pub const PRP = 0x88FB;
        /// Connectivity Fault Management
        pub const CFM = 0x8902;
        /// Fibre Channel over Ethernet
        pub const FCOE = 0x8906;
        /// Infiniband over Ethernet
        pub const IBOE = 0x8915;
        /// TDLS
        pub const TDLS = 0x890D;
        /// FCoE Initialization Protocol
        pub const FIP = 0x8914;
        /// IEEE 802.21 Media Independent Handover Protocol
        pub const @"80221" = 0x8917;
        /// IEC 62439-3 HSRv1
        pub const HSR = 0x892F;
        /// Network Service Header
        pub const NSH = 0x894F;
        /// Ethernet loopback packet, per IEEE 802.3
        pub const LOOPBACK = 0x9000;
        /// deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ]
        pub const QINQ1 = 0x9100;
        /// deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ]
        pub const QINQ2 = 0x9200;
        /// deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ]
        pub const QINQ3 = 0x9300;
        /// Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ]
        pub const EDSA = 0xDADA;
        /// Fake VLAN Header for DSA [ NOT AN OFFICIALLY REGISTERED ID ]
        pub const DSA_8021Q = 0xDADB;
        /// A5PSW Tag Value [ NOT AN OFFICIALLY REGISTERED ID ]
        pub const DSA_A5PSW = 0xE001;
        /// ForCES inter-FE LFB type
        pub const IFE = 0xED3E;
        /// IBM af_iucv [ NOT AN OFFICIALLY REGISTERED ID ]
        pub const AF_IUCV = 0xFBFB;
        /// If the value in the ethernet type is more than this value then the frame is Ethernet II. Else it is 802.3
        pub const @"802_3_MIN" = 0x0600;

        // Non DIX types. Won't clash for 1500 types.

        /// Dummy type for 802.3 frames
        pub const @"802_3" = 0x0001;
        /// Dummy protocol id for AX.25
        pub const AX25 = 0x0002;
        /// Every packet (be careful!!!)
        pub const ALL = 0x0003;
        /// 802.2 frames
        pub const @"802_2" = 0x0004;
        /// Internal only
        pub const SNAP = 0x0005;
        /// DEC DDCMP: Internal only
        pub const DDCMP = 0x0006;
        /// Dummy type for WAN PPP frames
        pub const WAN_PPP = 0x0007;
        /// Dummy type for PPP MP frames
        pub const PPP_MP = 0x0008;
        /// Localtalk pseudo type
        pub const LOCALTALK = 0x0009;
        /// CAN: Controller Area Network
        pub const CAN = 0x000C;
        /// CANFD: CAN flexible data rate
        pub const CANFD = 0x000D;
        /// CANXL: eXtended frame Length
        pub const CANXL = 0x000E;
        /// Dummy type for Atalk over PPP
        pub const PPPTALK = 0x0010;
        /// 802.2 frames
        pub const TR_802_2 = 0x0011;
        /// Mobitex (kaz@cafe.net)
        pub const MOBITEX = 0x0015;
        /// Card specific control frames
        pub const CONTROL = 0x0016;
        /// Linux-IrDA
        pub const IRDA = 0x0017;
        /// Acorn Econet
        pub const ECONET = 0x0018;
        /// HDLC frames
        pub const HDLC = 0x0019;
        /// 1A for ArcNet :-)
        pub const ARCNET = 0x001A;
        /// Distributed Switch Arch.
        pub const DSA = 0x001B;
        /// Trailer switch tagging
        pub const TRAILER = 0x001C;
        /// Nokia Phonet frames
        pub const PHONET = 0x00F5;
        /// IEEE802.15.4 frame
        pub const IEEE802154 = 0x00F6;
        /// ST-Ericsson CAIF protocol
        pub const CAIF = 0x00F7;
        /// Multiplexed DSA protocol
        pub const XDSA = 0x00F8;
        /// Qualcomm multiplexing and aggregation protocol
        pub const MAP = 0x00F9;
        /// Management component transport protocol packets
        pub const MCTP = 0x00FA;
    };
}