1 /* 2 * From FreeBSD 2.2.7: Fundamental constants relating to ethernet. 3 * 4 * Copyright (C) 1999-2009, Broadcom Corporation 5 * 6 * Unless you and Broadcom execute a separate written software license 7 * agreement governing use of this software, this software is licensed to you 8 * under the terms of the GNU General Public License version 2 (the "GPL"), 9 * available at http://www.broadcom.com/licenses/GPLv2.php, with the 10 * following added to such license: 11 * 12 * As a special exception, the copyright holders of this software give you 13 * permission to link this software with independent modules, and to copy and 14 * distribute the resulting executable under terms of your choice, provided that 15 * you also meet, for each linked independent module, the terms and conditions of 16 * the license of that module. An independent module is a module which is not 17 * derived from this software. The special exception does not apply to any 18 * modifications of the software. 19 * 20 * Notwithstanding the above, under no circumstances may you combine this 21 * software in any way with any other Broadcom software provided under a license 22 * other than the GPL, without Broadcom's express prior written consent. 23 * 24 * $Id: ethernet.h,v 9.45.56.3 2009/08/15 00:51:27 Exp $ 25 */ 26 27 28 #ifndef _NET_ETHERNET_H_ 29 #define _NET_ETHERNET_H_ 30 31 #ifndef _TYPEDEFS_H_ 32 #include "typedefs.h" 33 #endif 34 35 36 #include <packed_section_start.h> 37 38 39 40 #define ETHER_ADDR_LEN 6 41 42 43 #define ETHER_TYPE_LEN 2 44 45 46 #define ETHER_CRC_LEN 4 47 48 49 #define ETHER_HDR_LEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN) 50 51 52 #define ETHER_MIN_LEN 64 53 54 55 #define ETHER_MIN_DATA 46 56 57 58 #define ETHER_MAX_LEN 1518 59 60 61 #define ETHER_MAX_DATA 1500 62 63 64 #define ETHER_TYPE_MIN 0x0600 65 #define ETHER_TYPE_IP 0x0800 66 #define ETHER_TYPE_ARP 0x0806 67 #define ETHER_TYPE_8021Q 0x8100 68 #define ETHER_TYPE_BRCM 0x886c 69 #define ETHER_TYPE_802_1X 0x888e 70 #ifdef BCMWPA2 71 #define ETHER_TYPE_802_1X_PREAUTH 0x88c7 72 #endif 73 74 75 #define ETHER_BRCM_SUBTYPE_LEN 4 76 #define ETHER_BRCM_CRAM 1 77 78 79 #define ETHER_DEST_OFFSET (0 * ETHER_ADDR_LEN) 80 #define ETHER_SRC_OFFSET (1 * ETHER_ADDR_LEN) 81 #define ETHER_TYPE_OFFSET (2 * ETHER_ADDR_LEN) 82 83 84 #define ETHER_IS_VALID_LEN(foo) \ 85 ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN) 86 87 88 #ifndef __INCif_etherh 89 90 BWL_PRE_PACKED_STRUCT struct ether_header { 91 uint8 ether_dhost[ETHER_ADDR_LEN]; 92 uint8 ether_shost[ETHER_ADDR_LEN]; 93 uint16 ether_type; 94 } BWL_POST_PACKED_STRUCT; 95 96 97 BWL_PRE_PACKED_STRUCT struct ether_addr { 98 uint8 octet[ETHER_ADDR_LEN]; 99 } BWL_POST_PACKED_STRUCT; 100 #endif 101 102 103 #define ETHER_SET_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] | 2)) 104 #define ETHER_IS_LOCALADDR(ea) (((uint8 *)(ea))[0] & 2) 105 #define ETHER_CLR_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & 0xd)) 106 #define ETHER_TOGGLE_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] ^ 2)) 107 108 109 #define ETHER_SET_UNICAST(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & ~1)) 110 111 112 #define ETHER_ISMULTI(ea) (((const uint8 *)(ea))[0] & 1) 113 114 115 116 #define ether_cmp(a, b) (!(((short*)a)[0] == ((short*)b)[0]) | \ 117 !(((short*)a)[1] == ((short*)b)[1]) | \ 118 !(((short*)a)[2] == ((short*)b)[2])) 119 120 121 #define ether_copy(s, d) { \ 122 ((short*)d)[0] = ((short*)s)[0]; \ 123 ((short*)d)[1] = ((short*)s)[1]; \ 124 ((short*)d)[2] = ((short*)s)[2]; } 125 126 127 static const struct ether_addr ether_bcast = {{255, 255, 255, 255, 255, 255}}; 128 static const struct ether_addr ether_null = {{0, 0, 0, 0, 0, 0}}; 129 130 #define ETHER_ISBCAST(ea) ((((uint8 *)(ea))[0] & \ 131 ((uint8 *)(ea))[1] & \ 132 ((uint8 *)(ea))[2] & \ 133 ((uint8 *)(ea))[3] & \ 134 ((uint8 *)(ea))[4] & \ 135 ((uint8 *)(ea))[5]) == 0xff) 136 #define ETHER_ISNULLADDR(ea) ((((uint8 *)(ea))[0] | \ 137 ((uint8 *)(ea))[1] | \ 138 ((uint8 *)(ea))[2] | \ 139 ((uint8 *)(ea))[3] | \ 140 ((uint8 *)(ea))[4] | \ 141 ((uint8 *)(ea))[5]) == 0) 142 143 144 145 #include <packed_section_end.h> 146 147 #endif 148
