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_MACSEC	0x88E5		/* 802.1ae MACsec */
95 #define ETH_P_8021AH	0x88E7          /* 802.1ah Backbone Service Tag */
96 #define ETH_P_MVRP	0x88F5          /* 802.1Q MVRP                  */
97 #define ETH_P_1588	0x88F7		/* IEEE 1588 Timesync */
98 #define ETH_P_NCSI	0x88F8		/* NCSI protocol		*/
99 #define ETH_P_PRP	0x88FB		/* IEC 62439-3 PRP/HSRv0	*/
100 #define ETH_P_FCOE	0x8906		/* Fibre Channel over Ethernet  */
101 #define ETH_P_IBOE	0x8915		/* Infiniband over Ethernet	*/
102 #define ETH_P_TDLS	0x890D          /* TDLS */
103 #define ETH_P_FIP	0x8914		/* FCoE Initialization Protocol */
104 #define ETH_P_80221	0x8917		/* IEEE 802.21 Media Independent Handover Protocol */
105 #define ETH_P_HSR	0x892F		/* IEC 62439-3 HSRv1	*/
106 #define ETH_P_NSH	0x894F		/* Network Service Header */
107 #define ETH_P_LOOPBACK	0x9000		/* Ethernet loopback packet, per IEEE 802.3 */
108 #define ETH_P_QINQ1	0x9100		/* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
109 #define ETH_P_QINQ2	0x9200		/* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
110 #define ETH_P_QINQ3	0x9300		/* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
111 #define ETH_P_EDSA	0xDADA		/* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */
112 #define ETH_P_IFE	0xED3E		/* ForCES inter-FE LFB type */
113 #define ETH_P_AF_IUCV   0xFBFB		/* IBM af_iucv [ NOT AN OFFICIALLY REGISTERED ID ] */
114 
115 #define ETH_P_802_3_MIN	0x0600		/* If the value in the ethernet type is less than this value
116 					 * then the frame is Ethernet II. Else it is 802.3 */
117 
118 /*
119  *	Non DIX types. Won't clash for 1500 types.
120  */
121 
122 #define ETH_P_802_3	0x0001		/* Dummy type for 802.3 frames  */
123 #define ETH_P_AX25	0x0002		/* Dummy protocol id for AX.25  */
124 #define ETH_P_ALL	0x0003		/* Every packet (be careful!!!) */
125 #define ETH_P_802_2	0x0004		/* 802.2 frames 		*/
126 #define ETH_P_SNAP	0x0005		/* Internal only		*/
127 #define ETH_P_DDCMP     0x0006          /* DEC DDCMP: Internal only     */
128 #define ETH_P_WAN_PPP   0x0007          /* Dummy type for WAN PPP frames*/
129 #define ETH_P_PPP_MP    0x0008          /* Dummy type for PPP MP frames */
130 #define ETH_P_LOCALTALK 0x0009		/* Localtalk pseudo type 	*/
131 #define ETH_P_CAN	0x000C		/* CAN: Controller Area Network */
132 #define ETH_P_CANFD	0x000D		/* CANFD: CAN flexible data rate*/
133 #define ETH_P_PPPTALK	0x0010		/* Dummy type for Atalk over PPP*/
134 #define ETH_P_TR_802_2	0x0011		/* 802.2 frames 		*/
135 #define ETH_P_MOBITEX	0x0015		/* Mobitex (kaz@cafe.net)	*/
136 #define ETH_P_CONTROL	0x0016		/* Card specific control frames */
137 #define ETH_P_IRDA	0x0017		/* Linux-IrDA			*/
138 #define ETH_P_ECONET	0x0018		/* Acorn Econet			*/
139 #define ETH_P_HDLC	0x0019		/* HDLC frames			*/
140 #define ETH_P_ARCNET	0x001A		/* 1A for ArcNet :-)            */
141 #define ETH_P_DSA	0x001B		/* Distributed Switch Arch.	*/
142 #define ETH_P_TRAILER	0x001C		/* Trailer switch tagging	*/
143 #define ETH_P_PHONET	0x00F5		/* Nokia Phonet frames          */
144 #define ETH_P_IEEE802154 0x00F6		/* IEEE802.15.4 frame		*/
145 #define ETH_P_CAIF	0x00F7		/* ST-Ericsson CAIF protocol	*/
146 #define ETH_P_XDSA	0x00F8		/* Multiplexed DSA protocol	*/
147 #define ETH_P_MAP	0x00F9		/* Qualcomm multiplexing and
148 					 * aggregation protocol
149 					 */
150 
151 /*
152  *	This is an Ethernet frame header.
153  */
154 
155 /* allow libcs like musl to deactivate this, glibc does not implement this. */
156 #ifndef __UAPI_DEF_ETHHDR
157 #define __UAPI_DEF_ETHHDR		1
158 #endif
159 
160 #if __UAPI_DEF_ETHHDR
161 struct ethhdr {
162 	unsigned char	h_dest[ETH_ALEN];	/* destination eth addr	*/
163 	unsigned char	h_source[ETH_ALEN];	/* source ether addr	*/
164 	__be16		h_proto;		/* packet type ID field	*/
165 } __attribute__((packed));
166 #endif
167 
168 
169 #endif /* _UAPI_LINUX_IF_ETHER_H */
170