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+/*******************************************************************************
+ * $Id$
+ * Copyright 2004, 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 _NET_ETHERNET_H_ /* use native BSD ethernet.h when available */
+#define _NET_ETHERNET_H_
+
+#ifndef _TYPEDEFS_H_
+#include "typedefs.h"
+#endif
+
+#if defined(__GNUC__)
+#define PACKED __attribute__((packed))
+#else
+#define PACKED
+#endif
+
+/*
+ * The number of bytes in an ethernet (MAC) address.
+ */
+#ifndef ETHER_ADDR_LEN
+#define ETHER_ADDR_LEN 6
+#endif
+
+/*
+ * The number of bytes in the type field.
+ */
+#ifndef ETHER_TYPE_LEN
+#define ETHER_TYPE_LEN 2
+#endif
+
+/*
+ * The number of bytes in the trailing CRC field.
+ */
+#ifndef ETHER_CRC_LEN
+#define ETHER_CRC_LEN 4
+#endif
+
+/*
+ * The length of the combined header.
+ */
+#ifndef ETHER_HDR_LEN
+#define ETHER_HDR_LEN (ETHER_ADDR_LEN*2+ETHER_TYPE_LEN)
+#endif
+
+/*
+ * The minimum packet length.
+ */
+#ifndef ETHER_MIN_LEN
+#define ETHER_MIN_LEN 64
+#endif
+
+/*
+ * The minimum packet user data length.
+ */
+#ifndef ETHER_MIN_DATA
+#define ETHER_MIN_DATA 46
+#endif
+
+/*
+ * The maximum packet length.
+ */
+#ifndef ETHER_MAX_LEN
+#define ETHER_MAX_LEN 1518
+#endif
+
+/*
+ * The maximum packet user data length.
+ */
+#define ETHER_MAX_DATA 1500
+
+/*
+ * Used to uniquely identify a 802.1q VLAN-tagged header.
+ */
+#define VLAN_TAG 0x8100
+
+/*
+ * Located after dest & src address in ether header.
+ */
+#define VLAN_FIELDS_OFFSET (ETHER_ADDR_LEN * 2)
+
+/*
+ * 4 bytes of vlan field info.
+ */
+#define VLAN_FIELDS_SIZE 4
+
+/* location of bits in 16-bit vlan fields */
+#define VLAN_PRI_SHIFT 13 /* user priority */
+#define VLAN_CFI_SHIFT 12 /* canonical format indicator bit */
+
+/* 3 bits of priority */
+#define VLAN_PRI_MASK 7
+/* 12 bits of vlan identfier (VID) */
+#define VLAN_VID_MASK 0xFFF /* VLAN identifier (VID) field */
+
+struct vlan_tags {
+ uint16 tag_type; /* 0x8100 for VLAN */
+ uint16 tag_control; /* prio | cfi | vid */
+} PACKED ;
+
+/* 802.1X ethertype */
+
+#define ETHER_TYPE_IP 0x0800 /* IP */
+#define ETHER_TYPE_BRCM 0x886c /* Broadcom Corp. */
+#define ETHER_TYPE_802_1X 0x888e /* 802.1x */
+
+#define ETHER_BRCM_SUBTYPE_LEN 4 /* Broadcom 4byte subtype follows ethertype */
+#define ETHER_BRCM_CRAM 0x1 /* Broadcom subtype cram protocol */
+
+/*
+ * A macro to validate a length with
+ */
+#define ETHER_IS_VALID_LEN(foo) \
+ ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
+
+#ifndef __NET_ETHERNET_H
+#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
+#endif
+
+/*
+ * 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)
+
+/*
+ * 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 - lower 6 bits of tos in iphdr */
+#define DSCP_PRI_MASK 0x3F /* bits 0-6 */
+#define DSCP_WME_PRI_MASK 0x38 /* bits 3-6 */
+#define DSCP_WME_PRI_SHIFT 3
+
+#undef PACKED
+
+#endif /* _NET_ETHERNET_H_ */