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/*
* From FreeBSD 2.2.7: Fundamental constants relating to ethernet.
*
* Copyright (C) 1999-2013, 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 384540 2013-02-12 04:28:58Z $
*/
#ifndef _NET_ETHERNET_H_ /* use native BSD ethernet.h when available */
#define _NET_ETHERNET_H_
#ifndef _TYPEDEFS_H_
#include "typedefs.h"
#endif
/* This marks the start of a packed structure section. */
#include <packed_section_start.h>
/*
* The number of bytes in an ethernet (MAC) address.
*/
#define ETHER_ADDR_LEN 6
/*
* The number of bytes in the type field.
*/
#define ETHER_TYPE_LEN 2
/*
* The number of bytes in the trailing CRC field.
*/
#define ETHER_CRC_LEN 4
/*
* The length of the combined header.
*/
#define ETHER_HDR_LEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN)
/*
* The minimum packet length.
*/
#define ETHER_MIN_LEN 64
/*
* The minimum packet user data length.
*/
#define ETHER_MIN_DATA 46
/*
* The maximum packet length.
*/
#define ETHER_MAX_LEN 1518
/*
* The maximum packet user data length.
*/
#define ETHER_MAX_DATA 1500
/* ether types */
#define ETHER_TYPE_MIN 0x0600 /* Anything less than MIN is a length */
#define ETHER_TYPE_IP 0x0800 /* IP */
#define ETHER_TYPE_ARP 0x0806 /* ARP */
#define ETHER_TYPE_8021Q 0x8100 /* 802.1Q */
#define ETHER_TYPE_IPV6 0x86dd /* IPv6 */
#define ETHER_TYPE_BRCM 0x886c /* Broadcom Corp. */
#define ETHER_TYPE_802_1X 0x888e /* 802.1x */
#ifdef PLC
#define ETHER_TYPE_88E1 0x88e1 /* GIGLE */
#define ETHER_TYPE_8912 0x8912 /* GIGLE */
#define ETHER_TYPE_GIGLED 0xffff /* GIGLE */
#endif /* PLC */
#define ETHER_TYPE_802_1X_PREAUTH 0x88c7 /* 802.1x preauthentication */
#define ETHER_TYPE_WAI 0x88b4 /* WAI */
#define ETHER_TYPE_89_0D 0x890d /* 89-0d frame for TDLS */
#define ETHER_TYPE_PPP_SES 0x8864 /* PPPoE Session */
/* Broadcom subtype follows ethertype; First 2 bytes are reserved; Next 2 are subtype; */
#define ETHER_BRCM_SUBTYPE_LEN 4 /* Broadcom 4 byte subtype */
/* ether header */
#define ETHER_DEST_OFFSET (0 * ETHER_ADDR_LEN) /* dest address offset */
#define ETHER_SRC_OFFSET (1 * ETHER_ADDR_LEN) /* src address offset */
#define ETHER_TYPE_OFFSET (2 * ETHER_ADDR_LEN) /* ether type offset */
/*
* A macro to validate a length with
*/
#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 /* Quick and ugly hack for VxWorks */
/*
* Structure of a 10Mb/s Ethernet header.
*/
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;
/*
* Structure of a 48-bit Ethernet address.
*/
BWL_PRE_PACKED_STRUCT struct ether_addr {
uint8 octet[ETHER_ADDR_LEN];
} BWL_POST_PACKED_STRUCT;
#endif /* !__INCif_etherh Quick and ugly hack for VxWorks */
/*
* Takes a pointer, set, test, clear, toggle locally admininistered
* address bit in the 48-bit Ethernet address.
*/
#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] & 0xfd))
#define ETHER_TOGGLE_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] ^ 2))
/* Takes a pointer, marks unicast address bit in the MAC address */
#define ETHER_SET_UNICAST(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & ~1))
/*
* Takes a pointer, returns true if a 48-bit multicast address
* (including broadcast, since it is all ones)
*/
#define ETHER_ISMULTI(ea) (((const uint8 *)(ea))[0] & 1)
/* compare two ethernet addresses - assumes the pointers can be referenced as shorts */
#define eacmp(a, b) ((((const uint16 *)(a))[0] ^ ((const uint16 *)(b))[0]) | \
(((const uint16 *)(a))[1] ^ ((const uint16 *)(b))[1]) | \
(((const uint16 *)(a))[2] ^ ((const uint16 *)(b))[2]))
#define ether_cmp(a, b) eacmp(a, b)
/* copy an ethernet address - assumes the pointers can be referenced as shorts */
#define eacopy(s, d) \
do { \
((uint16 *)(d))[0] = ((const uint16 *)(s))[0]; \
((uint16 *)(d))[1] = ((const uint16 *)(s))[1]; \
((uint16 *)(d))[2] = ((const uint16 *)(s))[2]; \
} while (0)
#define ether_copy(s, d) eacopy(s, d)
/* Copy an ethernet address in reverse order */
#define ether_rcopy(s, d) \
do { \
((uint16 *)(d))[2] = ((uint16 *)(s))[2]; \
((uint16 *)(d))[1] = ((uint16 *)(s))[1]; \
((uint16 *)(d))[0] = ((uint16 *)(s))[0]; \
} while (0)
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}};
static const struct ether_addr ether_ipv6_mcast = {{0x33, 0x33, 0x00, 0x00, 0x00, 0x01}};
#define ETHER_ISBCAST(ea) ((((const uint8 *)(ea))[0] & \
((const uint8 *)(ea))[1] & \
((const uint8 *)(ea))[2] & \
((const uint8 *)(ea))[3] & \
((const uint8 *)(ea))[4] & \
((const uint8 *)(ea))[5]) == 0xff)
#define ETHER_ISNULLADDR(ea) ((((const uint8 *)(ea))[0] | \
((const uint8 *)(ea))[1] | \
((const uint8 *)(ea))[2] | \
((const uint8 *)(ea))[3] | \
((const uint8 *)(ea))[4] | \
((const uint8 *)(ea))[5]) == 0)
#define ETHER_ISNULLDEST(da) ((((const uint16 *)(da))[0] | \
((const uint16 *)(da))[1] | \
((const uint16 *)(da))[2]) == 0)
#define ETHER_ISNULLSRC(sa) ETHER_ISNULLDEST(sa)
#define ETHER_MOVE_HDR(d, s) \
do { \
struct ether_header t; \
t = *(struct ether_header *)(s); \
*(struct ether_header *)(d) = t; \
} while (0)
#define ETHER_ISUCAST(ea) ((((uint8 *)(ea))[0] & 0x01) == 0)
/* This marks the end of a packed structure section. */
#include <packed_section_end.h>
#endif /* _NET_ETHERNET_H_ */
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