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Diffstat (limited to 'package/wificonf/include/proto/ethernet.h')
| -rw-r--r-- | package/wificonf/include/proto/ethernet.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/package/wificonf/include/proto/ethernet.h b/package/wificonf/include/proto/ethernet.h new file mode 100644 index 0000000000..c2718a6511 --- /dev/null +++ b/package/wificonf/include/proto/ethernet.h @@ -0,0 +1,171 @@ +/******************************************************************************* + * $Id$ + * 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_ */ |