--- /dev/null
+/*
+ * From FreeBSD 2.2.7: Fundamental constants relating to ethernet.
+ *
+ * Copyright 2007, 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.
+ *
+ */
+
+#ifndef _NET_ETHERNET_H_ /* use native BSD ethernet.h when available */
+#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_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_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 * 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)
+
+
+#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.
+ */
+#ifndef NOETHREQ /* Quick and ugly hack for VxWorks */
+struct ether_addr {
+ uint8 octet[ETHER_ADDR_LEN];
+} PACKED;
+#endif
+#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] & 0xd))
+#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] = ((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}};
+static const struct ether_addr ether_null = {{0, 0, 0, 0, 0, 0}};
+
+/*
+ * 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)
+
+#undef PACKED
+#if !defined(__GNUC__)
+#pragma pack()
+#endif
+
+#endif /* _NET_ETHERNET_H_ */
projects / openwrt / openwrt.git / blobdiff