text: /*
   * From FreeBSD 2.2.7: Fundamental constants relating to ethernet.
   *
   * Copyright (C) 1999-2011, Broadcom Corporation
   *
   * Permission to use, copy, modify, and/or distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
   * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
   * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
   * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   *
   * $Id: ethernet.h,v 9.56 2009-10-15 22:54:58 Exp $
   */
  
  
  #ifndef _NET_ETHERNET_H_
  #define _NET_ETHERNET_H_
  
  #ifndef _TYPEDEFS_H_
  #include "typedefs.h"
  #endif
  
  
  #include <packed_section_start.h>
  
  
  
  #define	ETHER_ADDR_LEN		6
  
  
  #define	ETHER_TYPE_LEN		2
  
  
  #define	ETHER_CRC_LEN		4
  
  
  #define	ETHER_HDR_LEN		(ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN)
  
  
  #define	ETHER_MIN_LEN		64
  
  
  #define	ETHER_MIN_DATA		46
  
  
  #define	ETHER_MAX_LEN		1518
  
  
  #define	ETHER_MAX_DATA		1500
  
  
  #define ETHER_TYPE_MIN		0x0600
  #define	ETHER_TYPE_IP		0x0800
  #define ETHER_TYPE_ARP		0x0806
  #define ETHER_TYPE_8021Q	0x8100
  #define	ETHER_TYPE_BRCM		0x886c
  #define	ETHER_TYPE_802_1X	0x888e
  #define	ETHER_TYPE_802_1X_PREAUTH 0x88c7
  #define ETHER_TYPE_WAI		0x88b4
  
  
  
  #define	ETHER_BRCM_SUBTYPE_LEN	4
  #define	ETHER_BRCM_CRAM		1
  
  
  #define ETHER_DEST_OFFSET	(0 * ETHER_ADDR_LEN)
  #define ETHER_SRC_OFFSET	(1 * ETHER_ADDR_LEN)
  #define ETHER_TYPE_OFFSET	(2 * ETHER_ADDR_LEN)
  
  
  #define	ETHER_IS_VALID_LEN(foo)	\
  	((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
  
  #define ETHER_FILL_MCAST_ADDR_FROM_IP(ea, mgrp_ip) {		\
  		((uint8 *)ea)[0] = 0x01;			\
  		((uint8 *)ea)[1] = 0x00;			\
  		((uint8 *)ea)[2] = 0x5e;			\
  		((uint8 *)ea)[3] = ((mgrp_ip) >> 16) & 0x7f;	\
  		((uint8 *)ea)[4] = ((mgrp_ip) >>  8) & 0xff;	\
  		((uint8 *)ea)[5] = ((mgrp_ip) >>  0) & 0xff;	\
  }
  
  #ifndef __INCif_etherh
  
  BWL_PRE_PACKED_STRUCT struct ether_header {
  	uint8	ether_dhost[ETHER_ADDR_LEN];
  	uint8	ether_shost[ETHER_ADDR_LEN];
  	uint16	ether_type;
  } BWL_POST_PACKED_STRUCT;
  
  
  BWL_PRE_PACKED_STRUCT struct	ether_addr {
  	uint8 octet[ETHER_ADDR_LEN];
  } BWL_POST_PACKED_STRUCT;
  #endif
  
  
  #define ETHER_SET_LOCALADDR(ea)	(((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] | 2))
  #define ETHER_IS_LOCALADDR(ea) 	(((uint8 *)(ea))[0] & 2)
  #define ETHER_CLR_LOCALADDR(ea)	(((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & 0xd))
  #define ETHER_TOGGLE_LOCALADDR(ea)	(((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] ^ 2))
  
  
  #define ETHER_SET_UNICAST(ea)	(((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & ~1))
  
  
  #define ETHER_ISMULTI(ea) (((const uint8 *)(ea))[0] & 1)
  
  
  
  #define	ether_cmp(a, b)	(!(((short*)a)[0] == ((short*)b)[0]) | \
  			 !(((short*)a)[1] == ((short*)b)[1]) | \
  			 !(((short*)a)[2] == ((short*)b)[2]))
  
  
  #define	ether_copy(s, d) { \
  		((short*)d)[0] = ((short*)s)[0]; \
  		((short*)d)[1] = ((short*)s)[1]; \
  		((short*)d)[2] = ((short*)s)[2]; }
  
  
  static const struct ether_addr ether_bcast = {{255, 255, 255, 255, 255, 255}};
  static const struct ether_addr ether_null = {{0, 0, 0, 0, 0, 0}};
  
  #define ETHER_ISBCAST(ea)	((((uint8 *)(ea))[0] &		\
  	                          ((uint8 *)(ea))[1] &		\
  				  ((uint8 *)(ea))[2] &		\
  				  ((uint8 *)(ea))[3] &		\
  				  ((uint8 *)(ea))[4] &		\
  				  ((uint8 *)(ea))[5]) == 0xff)
  #define ETHER_ISNULLADDR(ea)	((((uint8 *)(ea))[0] |		\
  				  ((uint8 *)(ea))[1] |		\
  				  ((uint8 *)(ea))[2] |		\
  				  ((uint8 *)(ea))[3] |		\
  				  ((uint8 *)(ea))[4] |		\
  				  ((uint8 *)(ea))[5]) == 0)
  
  
  #define ETHER_MOVE_HDR(d, s) \
  do { \
  	struct ether_header t; \
  	t = *(struct ether_header *)(s); \
  	*(struct ether_header *)(d) = t; \
  } while (0)
  
  
  #include <packed_section_end.h>
  
  #endif
  