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/*
* From FreeBSD 2.2.7: Fundamental constants relating to ethernet.
*
* Copyright (C) 1999-2012, Broadcom Corporation
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
*
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
* you also meet, for each linked independent module, the terms and conditions of
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
*
* $Id: ethernet.h 309193 2012-01-19 00:03:57Z $
*/
#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 */
#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_IPV6 0x86dd /* IPV6 */
/* 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 ether_cmp(a, b) (!(((short*)(a))[0] == ((short*)(b))[0]) | \
!(((short*)(a))[1] == ((short*)(b))[1]) | \
!(((short*)(a))[2] == ((short*)(b))[2]))
/* copy an ethernet address - assumes the pointers can be referenced as shorts */
#define ether_copy(s, d) { \
((short*)(d))[0] = ((const short*)(s))[0]; \
((short*)(d))[1] = ((const short*)(s))[1]; \
((short*)(d))[2] = ((const 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)
/* This marks the end of a packed structure section. */
#include <packed_section_end.h>
#endif /* _NET_ETHERNET_H_ */
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