mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-30 03:45:18 +02:00
d787d666cd
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@2480 3c298f89-4303-0410-b956-a3cf2f4a3e73
172 lines
4.4 KiB
C
172 lines
4.4 KiB
C
/*******************************************************************************
|
|
* $Id$
|
|
* Copyright 2005, Broadcom Corporation
|
|
* All Rights Reserved.
|
|
*
|
|
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
|
|
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
|
|
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
|
|
* From FreeBSD 2.2.7: Fundamental constants relating to ethernet.
|
|
******************************************************************************/
|
|
|
|
#ifndef ETHER_ADDR_LEN
|
|
#define _NET_ETHERNET_H_
|
|
|
|
#ifndef _TYPEDEFS_H_
|
|
#include "typedefs.h"
|
|
#endif
|
|
|
|
/* enable structure packing */
|
|
#if defined(__GNUC__)
|
|
#define PACKED __attribute__((packed))
|
|
#else
|
|
#pragma pack(1)
|
|
#define PACKED
|
|
#endif
|
|
|
|
/*
|
|
* 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_IP 0x0800 /* IP */
|
|
#define ETHER_TYPE_ARP 0x0806 /* ARP */
|
|
#define ETHER_TYPE_8021Q 0x8100 /* 802.1Q */
|
|
#define ETHER_TYPE_BRCM 0x886c /* Broadcom Corp. */
|
|
#define ETHER_TYPE_802_1X 0x888e /* 802.1x */
|
|
#ifdef BCMWPA2
|
|
#define ETHER_TYPE_802_1X_PREAUTH 0x88c7 /* 802.1x preauthentication*/
|
|
#endif
|
|
|
|
/* Broadcom subtype follows ethertype; First 2 bytes are reserved; Next 2 are subtype; */
|
|
#define ETHER_BRCM_SUBTYPE_LEN 4 /* Broadcom 4 byte subtype */
|
|
#define ETHER_BRCM_CRAM 0x1 /* Broadcom subtype cram protocol */
|
|
|
|
/* ether header */
|
|
#define ETHER_DEST_OFFSET 0 /* dest address offset */
|
|
#define ETHER_SRC_OFFSET 6 /* src address offset */
|
|
#define ETHER_TYPE_OFFSET 12 /* ether type offset */
|
|
|
|
/*
|
|
* A macro to validate a length with
|
|
*/
|
|
#define ETHER_IS_VALID_LEN(foo) \
|
|
((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
|
|
|
|
|
|
#ifndef __INCif_etherh /* Quick and ugly hack for VxWorks */
|
|
/*
|
|
* Structure of a 10Mb/s Ethernet header.
|
|
*/
|
|
struct ether_header {
|
|
uint8 ether_dhost[ETHER_ADDR_LEN];
|
|
uint8 ether_shost[ETHER_ADDR_LEN];
|
|
uint16 ether_type;
|
|
} PACKED;
|
|
|
|
/*
|
|
* Structure of a 48-bit Ethernet address.
|
|
*/
|
|
struct ether_addr {
|
|
uint8 octet[ETHER_ADDR_LEN];
|
|
} PACKED;
|
|
#endif
|
|
|
|
/*
|
|
* Takes a pointer, sets locally admininistered
|
|
* address bit in the 48-bit Ethernet address.
|
|
*/
|
|
#define ETHER_SET_LOCALADDR(ea) ( ((uint8 *)(ea))[0] = \
|
|
(((uint8 *)(ea))[0] | 2) )
|
|
|
|
/*
|
|
* Takes a pointer, returns true if a 48-bit multicast address
|
|
* (including broadcast, since it is all ones)
|
|
*/
|
|
#define ETHER_ISMULTI(ea) (((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] = ((short*)s)[0]; \
|
|
((short*)d)[1] = ((short*)s)[1]; \
|
|
((short*)d)[2] = ((short*)s)[2]; }
|
|
|
|
/*
|
|
* Takes a pointer, returns true if a 48-bit broadcast (all ones)
|
|
*/
|
|
#define ETHER_ISBCAST(ea) ((((uint8 *)(ea))[0] & \
|
|
((uint8 *)(ea))[1] & \
|
|
((uint8 *)(ea))[2] & \
|
|
((uint8 *)(ea))[3] & \
|
|
((uint8 *)(ea))[4] & \
|
|
((uint8 *)(ea))[5]) == 0xff)
|
|
|
|
static const struct ether_addr ether_bcast = {{255, 255, 255, 255, 255, 255}};
|
|
|
|
/*
|
|
* Takes a pointer, returns true if a 48-bit null address (all zeros)
|
|
*/
|
|
#define ETHER_ISNULLADDR(ea) ((((uint8 *)(ea))[0] | \
|
|
((uint8 *)(ea))[1] | \
|
|
((uint8 *)(ea))[2] | \
|
|
((uint8 *)(ea))[3] | \
|
|
((uint8 *)(ea))[4] | \
|
|
((uint8 *)(ea))[5]) == 0)
|
|
|
|
/* Differentiated Services Codepoint - upper 6 bits of tos in iphdr */
|
|
#define DSCP_MASK 0xFC /* upper 6 bits */
|
|
#define DSCP_SHIFT 2
|
|
#define DSCP_WME_PRI_MASK 0xE0 /* upper 3 bits */
|
|
#define DSCP_WME_PRI_SHIFT 5
|
|
|
|
#undef PACKED
|
|
#if !defined(__GNUC__)
|
|
#pragma pack()
|
|
#endif
|
|
|
|
#endif /* _NET_ETHERNET_H_ */
|