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1 /* |
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2 * INET An implementation of the TCP/IP protocol suite for the LINUX |
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3 * operating system. INET is implemented using the BSD Socket |
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4 * interface as the means of communication with the user level. |
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5 * |
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6 * Global definitions for the Ethernet IEEE 802.3 interface. |
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7 * |
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8 * Version: @(#)if_ether.h 1.0.1a 02/08/94 |
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9 * |
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10 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
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11 * Donald Becker, <becker@super.org> |
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12 * Alan Cox, <alan@lxorguk.ukuu.org.uk> |
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13 * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk> |
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14 * |
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15 * This program is free software; you can redistribute it and/or |
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16 * modify it under the terms of the GNU General Public License |
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17 * as published by the Free Software Foundation; either version |
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18 * 2 of the License, or (at your option) any later version. |
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19 */ |
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20 |
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21 #ifndef _LINUX_IF_ETHER_H |
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22 #define _LINUX_IF_ETHER_H |
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23 |
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24 #include <linux/types.h> |
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25 |
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26 /* |
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27 * IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble |
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28 * and FCS/CRC (frame check sequence). |
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29 */ |
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30 |
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31 #define ETH_ALEN 6 /* Octets in one ethernet addr */ |
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32 #define ETH_HLEN 14 /* Total octets in header. */ |
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33 #define ETH_ZLEN 60 /* Min. octets in frame sans FCS */ |
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34 #define ETH_DATA_LEN 1500 /* Max. octets in payload */ |
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35 #define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */ |
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36 #define ETH_FCS_LEN 4 /* Octets in the FCS */ |
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37 |
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38 /* |
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39 * These are the defined Ethernet Protocol ID's. |
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40 */ |
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41 |
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42 #define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */ |
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43 #define ETH_P_PUP 0x0200 /* Xerox PUP packet */ |
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44 #define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */ |
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45 #define ETH_P_IP 0x0800 /* Internet Protocol packet */ |
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46 #define ETH_P_X25 0x0805 /* CCITT X.25 */ |
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47 #define ETH_P_ARP 0x0806 /* Address Resolution packet */ |
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48 #define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */ |
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49 #define ETH_P_IEEEPUP 0x0a00 /* Xerox IEEE802.3 PUP packet */ |
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50 #define ETH_P_IEEEPUPAT 0x0a01 /* Xerox IEEE802.3 PUP Addr Trans packet */ |
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51 #define ETH_P_DEC 0x6000 /* DEC Assigned proto */ |
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52 #define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */ |
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53 #define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */ |
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54 #define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */ |
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55 #define ETH_P_LAT 0x6004 /* DEC LAT */ |
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56 #define ETH_P_DIAG 0x6005 /* DEC Diagnostics */ |
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57 #define ETH_P_CUST 0x6006 /* DEC Customer use */ |
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58 #define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */ |
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59 #define ETH_P_TEB 0x6558 /* Trans Ether Bridging */ |
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60 #define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */ |
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61 #define ETH_P_ATALK 0x809B /* Appletalk DDP */ |
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62 #define ETH_P_AARP 0x80F3 /* Appletalk AARP */ |
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63 #define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */ |
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64 #define ETH_P_IPX 0x8137 /* IPX over DIX */ |
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65 #define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */ |
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66 #define ETH_P_PAUSE 0x8808 /* IEEE Pause frames. See 802.3 31B */ |
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67 #define ETH_P_SLOW 0x8809 /* Slow Protocol. See 802.3ad 43B */ |
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68 #define ETH_P_WCCP 0x883E /* Web-cache coordination protocol |
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69 * defined in draft-wilson-wrec-wccp-v2-00.txt */ |
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70 #define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */ |
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71 #define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */ |
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72 #define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */ |
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73 #define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */ |
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74 #define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */ |
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75 #define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport |
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76 * over Ethernet |
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77 */ |
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78 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */ |
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79 #define ETH_P_AOE 0x88A2 /* ATA over Ethernet */ |
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80 #define ETH_P_TIPC 0x88CA /* TIPC */ |
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81 #define ETH_P_EDSA 0xDADA /* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */ |
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82 |
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83 /* |
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84 * Non DIX types. Won't clash for 1500 types. |
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85 */ |
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86 |
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87 #define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */ |
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88 #define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */ |
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89 #define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */ |
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90 #define ETH_P_802_2 0x0004 /* 802.2 frames */ |
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91 #define ETH_P_SNAP 0x0005 /* Internal only */ |
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92 #define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */ |
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93 #define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/ |
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94 #define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */ |
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95 #define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */ |
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96 #define ETH_P_CAN 0x000C /* Controller Area Network */ |
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97 #define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/ |
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98 #define ETH_P_TR_802_2 0x0011 /* 802.2 frames */ |
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99 #define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */ |
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100 #define ETH_P_CONTROL 0x0016 /* Card specific control frames */ |
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101 #define ETH_P_IRDA 0x0017 /* Linux-IrDA */ |
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102 #define ETH_P_ECONET 0x0018 /* Acorn Econet */ |
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103 #define ETH_P_HDLC 0x0019 /* HDLC frames */ |
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104 #define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */ |
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105 #define ETH_P_DSA 0x001B /* Distributed Switch Arch. */ |
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106 #define ETH_P_TRAILER 0x001C /* Trailer switch tagging */ |
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107 #define ETH_P_PHONET 0x00F5 /* Nokia Phonet frames */ |
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108 |
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109 /* |
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110 * This is an Ethernet frame header. |
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111 */ |
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112 |
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113 struct ethhdr { |
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114 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ |
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115 unsigned char h_source[ETH_ALEN]; /* source ether addr */ |
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116 __be16 h_proto; /* packet type ID field */ |
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117 } __attribute__((packed)); |
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118 |
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119 #ifdef __KERNEL__ |
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120 #include <linux/skbuff.h> |
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121 |
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122 static inline struct ethhdr *eth_hdr(const struct sk_buff *skb) |
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123 { |
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124 return (struct ethhdr *)skb_mac_header(skb); |
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125 } |
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126 |
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127 int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr); |
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128 |
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129 #ifdef CONFIG_SYSCTL |
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130 extern struct ctl_table ether_table[]; |
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131 #endif |
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132 |
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133 extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len); |
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134 |
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135 /* |
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136 * Display a 6 byte device address (MAC) in a readable format. |
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137 */ |
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138 extern char *print_mac(char *buf, const unsigned char *addr); |
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139 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x" |
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140 #define MAC_BUF_SIZE 18 |
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141 #define DECLARE_MAC_BUF(var) char var[MAC_BUF_SIZE] __maybe_unused |
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142 |
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143 #endif |
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144 |
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145 #endif /* _LINUX_IF_ETHER_H */ |