1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2 /*
3 * INET An implementation of the TCP/IP protocol suite for the LINUX
4 * operating system. INET is implemented using the BSD Socket
5 * interface as the means of communication with the user level.
6 *
7 * Global definitions for the Ethernet IEEE 802.3 interface.
8 *
9 * Version: @(#)if_ether.h 1.0.1a 02/08/94
10 *
11 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12 * Donald Becker, <becker@super.org>
13 * Alan Cox, <alan@lxorguk.ukuu.org.uk>
14 * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk>
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License
18 * as published by the Free Software Foundation; either version
19 * 2 of the License, or (at your option) any later version.
20 */
21
22 #ifndef _UAPI_LINUX_IF_ETHER_H
23 #define _UAPI_LINUX_IF_ETHER_H
24
25 #include <linux/types.h>
26
27 /*
28 * IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble
29 * and FCS/CRC (frame check sequence).
30 */
31
32 #define ETH_ALEN 6 /* Octets in one ethernet addr */
33 #define ETH_TLEN 2 /* Octets in ethernet type field */
34 #define ETH_HLEN 14 /* Total octets in header. */
35 #define ETH_ZLEN 60 /* Min. octets in frame sans FCS */
36 #define ETH_DATA_LEN 1500 /* Max. octets in payload */
37 #define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */
38 #define ETH_FCS_LEN 4 /* Octets in the FCS */
39
40 #define ETH_MIN_MTU 68 /* Min IPv4 MTU per RFC791 */
41 #define ETH_MAX_MTU 0xFFFFU /* 65535, same as IP_MAX_MTU */
42
43 /*
44 * These are the defined Ethernet Protocol ID's.
45 */
46
47 #define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */
48 #define ETH_P_PUP 0x0200 /* Xerox PUP packet */
49 #define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */
50 #define ETH_P_TSN 0x22F0 /* TSN (IEEE 1722) packet */
51 #define ETH_P_ERSPAN2 0x22EB /* ERSPAN version 2 (type III) */
52 #define ETH_P_IP 0x0800 /* Internet Protocol packet */
53 #define ETH_P_X25 0x0805 /* CCITT X.25 */
54 #define ETH_P_ARP 0x0806 /* Address Resolution packet */
55 #define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */
56 #define ETH_P_IEEEPUP 0x0a00 /* Xerox IEEE802.3 PUP packet */
57 #define ETH_P_IEEEPUPAT 0x0a01 /* Xerox IEEE802.3 PUP Addr Trans packet */
58 #define ETH_P_BATMAN 0x4305 /* B.A.T.M.A.N.-Advanced packet [ NOT AN OFFICIALLY REGISTERED ID ] */
59 #define ETH_P_DEC 0x6000 /* DEC Assigned proto */
60 #define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */
61 #define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */
62 #define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */
63 #define ETH_P_LAT 0x6004 /* DEC LAT */
64 #define ETH_P_DIAG 0x6005 /* DEC Diagnostics */
65 #define ETH_P_CUST 0x6006 /* DEC Customer use */
66 #define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */
67 #define ETH_P_TEB 0x6558 /* Trans Ether Bridging */
68 #define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */
69 #define ETH_P_ATALK 0x809B /* Appletalk DDP */
70 #define ETH_P_AARP 0x80F3 /* Appletalk AARP */
71 #define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */
72 #define ETH_P_ERSPAN 0x88BE /* ERSPAN type II */
73 #define ETH_P_IPX 0x8137 /* IPX over DIX */
74 #define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */
75 #define ETH_P_PAUSE 0x8808 /* IEEE Pause frames. See 802.3 31B */
76 #define ETH_P_SLOW 0x8809 /* Slow Protocol. See 802.3ad 43B */
77 #define ETH_P_WCCP 0x883E /* Web-cache coordination protocol
78 * defined in draft-wilson-wrec-wccp-v2-00.txt */
79 #define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */
80 #define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */
81 #define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */
82 #define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */
83 #define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */
84 #define ETH_P_LINK_CTL 0x886c /* HPNA, wlan link local tunnel */
85 #define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport
86 * over Ethernet
87 */
88 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
89 #define ETH_P_AOE 0x88A2 /* ATA over Ethernet */
90 #define ETH_P_8021AD 0x88A8 /* 802.1ad Service VLAN */
91 #define ETH_P_802_EX1 0x88B5 /* 802.1 Local Experimental 1. */
92 #define ETH_P_PREAUTH 0x88C7 /* 802.11 Preauthentication */
93 #define ETH_P_TIPC 0x88CA /* TIPC */
94 #define ETH_P_LLDP 0x88CC /* Link Layer Discovery Protocol */
95 #define ETH_P_MACSEC 0x88E5 /* 802.1ae MACsec */
96 #define ETH_P_8021AH 0x88E7 /* 802.1ah Backbone Service Tag */
97 #define ETH_P_MVRP 0x88F5 /* 802.1Q MVRP */
98 #define ETH_P_1588 0x88F7 /* IEEE 1588 Timesync */
99 #define ETH_P_NCSI 0x88F8 /* NCSI protocol */
100 #define ETH_P_PRP 0x88FB /* IEC 62439-3 PRP/HSRv0 */
101 #define ETH_P_FCOE 0x8906 /* Fibre Channel over Ethernet */
102 #define ETH_P_IBOE 0x8915 /* Infiniband over Ethernet */
103 #define ETH_P_TDLS 0x890D /* TDLS */
104 #define ETH_P_FIP 0x8914 /* FCoE Initialization Protocol */
105 #define ETH_P_80221 0x8917 /* IEEE 802.21 Media Independent Handover Protocol */
106 #define ETH_P_HSR 0x892F /* IEC 62439-3 HSRv1 */
107 #define ETH_P_NSH 0x894F /* Network Service Header */
108 #define ETH_P_LOOPBACK 0x9000 /* Ethernet loopback packet, per IEEE 802.3 */
109 #define ETH_P_QINQ1 0x9100 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
110 #define ETH_P_QINQ2 0x9200 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
111 #define ETH_P_QINQ3 0x9300 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
112 #define ETH_P_EDSA 0xDADA /* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */
113 #define ETH_P_DSA_8021Q 0xDADB /* Fake VLAN Header for DSA [ NOT AN OFFICIALLY REGISTERED ID ] */
114 #define ETH_P_IFE 0xED3E /* ForCES inter-FE LFB type */
115 #define ETH_P_AF_IUCV 0xFBFB /* IBM af_iucv [ NOT AN OFFICIALLY REGISTERED ID ] */
116
117 #define ETH_P_802_3_MIN 0x0600 /* If the value in the ethernet type is less than this value
118 * then the frame is Ethernet II. Else it is 802.3 */
119
120 /*
121 * Non DIX types. Won't clash for 1500 types.
122 */
123
124 #define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */
125 #define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */
126 #define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */
127 #define ETH_P_802_2 0x0004 /* 802.2 frames */
128 #define ETH_P_SNAP 0x0005 /* Internal only */
129 #define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */
130 #define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/
131 #define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */
132 #define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */
133 #define ETH_P_CAN 0x000C /* CAN: Controller Area Network */
134 #define ETH_P_CANFD 0x000D /* CANFD: CAN flexible data rate*/
135 #define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/
136 #define ETH_P_TR_802_2 0x0011 /* 802.2 frames */
137 #define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */
138 #define ETH_P_CONTROL 0x0016 /* Card specific control frames */
139 #define ETH_P_IRDA 0x0017 /* Linux-IrDA */
140 #define ETH_P_ECONET 0x0018 /* Acorn Econet */
141 #define ETH_P_HDLC 0x0019 /* HDLC frames */
142 #define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */
143 #define ETH_P_DSA 0x001B /* Distributed Switch Arch. */
144 #define ETH_P_TRAILER 0x001C /* Trailer switch tagging */
145 #define ETH_P_PHONET 0x00F5 /* Nokia Phonet frames */
146 #define ETH_P_IEEE802154 0x00F6 /* IEEE802.15.4 frame */
147 #define ETH_P_CAIF 0x00F7 /* ST-Ericsson CAIF protocol */
148 #define ETH_P_XDSA 0x00F8 /* Multiplexed DSA protocol */
149 #define ETH_P_MAP 0x00F9 /* Qualcomm multiplexing and
150 * aggregation protocol
151 */
152
153 /*
154 * This is an Ethernet frame header.
155 */
156
157 /* allow libcs like musl to deactivate this, glibc does not implement this. */
158 #ifndef __UAPI_DEF_ETHHDR
159 #define __UAPI_DEF_ETHHDR 1
160 #endif
161
162 #if __UAPI_DEF_ETHHDR
163 struct ethhdr {
164 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
165 unsigned char h_source[ETH_ALEN]; /* source ether addr */
166 __be16 h_proto; /* packet type ID field */
167 } __attribute__((packed));
168 #endif
169
170
171 #endif /* _UAPI_LINUX_IF_ETHER_H */