225 lines
7.3 KiB
C
Executable File
225 lines
7.3 KiB
C
Executable File
/*
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* From FreeBSD 2.2.7: Fundamental constants relating to ethernet.
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*
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* Copyright (C) 1999-2019, Broadcom.
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*
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* Unless you and Broadcom execute a separate written software license
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* agreement governing use of this software, this software is licensed to you
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* under the terms of the GNU General Public License version 2 (the "GPL"),
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* available at http://www.broadcom.com/licenses/GPLv2.php, with the
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* following added to such license:
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*
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* As a special exception, the copyright holders of this software give you
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* permission to link this software with independent modules, and to copy and
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* distribute the resulting executable under terms of your choice, provided that
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* you also meet, for each linked independent module, the terms and conditions of
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* the license of that module. An independent module is a module which is not
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* derived from this software. The special exception does not apply to any
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* modifications of the software.
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*
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* Notwithstanding the above, under no circumstances may you combine this
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* software in any way with any other Broadcom software provided under a license
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* other than the GPL, without Broadcom's express prior written consent.
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*
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*
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* <<Broadcom-WL-IPTag/Open:>>
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*
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* $Id: ethernet.h 700076 2017-05-17 14:42:22Z $
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*/
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#ifndef _NET_ETHERNET_H_ /* use native BSD ethernet.h when available */
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#define _NET_ETHERNET_H_
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#ifndef _TYPEDEFS_H_
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#include "typedefs.h"
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#endif // endif
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/* This marks the start of a packed structure section. */
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#include <packed_section_start.h>
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/*
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* The number of bytes in an ethernet (MAC) address.
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*/
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#define ETHER_ADDR_LEN 6
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/*
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* The number of bytes in the type field.
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*/
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#define ETHER_TYPE_LEN 2
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/*
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* The number of bytes in the trailing CRC field.
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*/
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#define ETHER_CRC_LEN 4
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/*
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* The length of the combined header.
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*/
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#define ETHER_HDR_LEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN)
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/*
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* The minimum packet length.
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*/
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#define ETHER_MIN_LEN 64
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/*
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* The minimum packet user data length.
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*/
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#define ETHER_MIN_DATA 46
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/*
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* The maximum packet length.
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*/
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#define ETHER_MAX_LEN 1518
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/*
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* The maximum packet user data length.
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*/
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#define ETHER_MAX_DATA 1500
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/* ether types */
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#define ETHER_TYPE_MIN 0x0600 /* Anything less than MIN is a length */
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#define ETHER_TYPE_IP 0x0800 /* IP */
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#define ETHER_TYPE_ARP 0x0806 /* ARP */
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#define ETHER_TYPE_8021Q 0x8100 /* 802.1Q */
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#define ETHER_TYPE_IPV6 0x86dd /* IPv6 */
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#define ETHER_TYPE_BRCM 0x886c /* Broadcom Corp. */
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#define ETHER_TYPE_802_1X 0x888e /* 802.1x */
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#define ETHER_TYPE_802_1X_PREAUTH 0x88c7 /* 802.1x preauthentication */
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#define ETHER_TYPE_WAI 0x88b4 /* WAI */
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#define ETHER_TYPE_89_0D 0x890d /* 89-0d frame for TDLS */
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#define ETHER_TYPE_RRB ETHER_TYPE_89_0D /* RRB 802.11r 2008 */
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#define ETHER_TYPE_PPP_SES 0x8864 /* PPPoE Session */
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#define ETHER_TYPE_IAPP_L2_UPDATE 0x6 /* IAPP L2 update frame */
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/* Broadcom subtype follows ethertype; First 2 bytes are reserved; Next 2 are subtype; */
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#define ETHER_BRCM_SUBTYPE_LEN 4 /* Broadcom 4 byte subtype */
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/* ether header */
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#define ETHER_DEST_OFFSET (0 * ETHER_ADDR_LEN) /* dest address offset */
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#define ETHER_SRC_OFFSET (1 * ETHER_ADDR_LEN) /* src address offset */
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#define ETHER_TYPE_OFFSET (2 * ETHER_ADDR_LEN) /* ether type offset */
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/*
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* A macro to validate a length with
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*/
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#define ETHER_IS_VALID_LEN(foo) \
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((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
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#define ETHER_FILL_MCAST_ADDR_FROM_IP(ea, mgrp_ip) { \
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((uint8 *)ea)[0] = 0x01; \
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((uint8 *)ea)[1] = 0x00; \
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((uint8 *)ea)[2] = 0x5e; \
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((uint8 *)ea)[3] = ((mgrp_ip) >> 16) & 0x7f; \
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((uint8 *)ea)[4] = ((mgrp_ip) >> 8) & 0xff; \
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((uint8 *)ea)[5] = ((mgrp_ip) >> 0) & 0xff; \
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}
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#ifndef __INCif_etherh /* Quick and ugly hack for VxWorks */
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/*
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* Structure of a 10Mb/s Ethernet header.
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*/
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BWL_PRE_PACKED_STRUCT struct ether_header {
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uint8 ether_dhost[ETHER_ADDR_LEN];
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uint8 ether_shost[ETHER_ADDR_LEN];
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uint16 ether_type;
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} BWL_POST_PACKED_STRUCT;
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/*
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* Structure of a 48-bit Ethernet address.
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*/
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BWL_PRE_PACKED_STRUCT struct ether_addr {
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uint8 octet[ETHER_ADDR_LEN];
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} BWL_POST_PACKED_STRUCT;
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#endif /* !__INCif_etherh Quick and ugly hack for VxWorks */
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/*
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* Takes a pointer, set, test, clear, toggle locally admininistered
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* address bit in the 48-bit Ethernet address.
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*/
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#define ETHER_SET_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] | 2))
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#define ETHER_IS_LOCALADDR(ea) (((uint8 *)(ea))[0] & 2)
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#define ETHER_CLR_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & 0xfd))
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#define ETHER_TOGGLE_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] ^ 2))
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/* Takes a pointer, marks unicast address bit in the MAC address */
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#define ETHER_SET_UNICAST(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & ~1))
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/*
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* Takes a pointer, returns true if a 48-bit multicast address
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* (including broadcast, since it is all ones)
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*/
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#define ETHER_ISMULTI(ea) (((const uint8 *)(ea))[0] & 1)
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/* compare two ethernet addresses - assumes the pointers can be referenced as shorts */
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#define eacmp(a, b) ((((const uint16 *)(a))[0] ^ ((const uint16 *)(b))[0]) | \
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(((const uint16 *)(a))[1] ^ ((const uint16 *)(b))[1]) | \
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(((const uint16 *)(a))[2] ^ ((const uint16 *)(b))[2]))
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#define ether_cmp(a, b) eacmp(a, b)
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/* copy an ethernet address - assumes the pointers can be referenced as shorts */
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#define eacopy(s, d) \
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do { \
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((uint16 *)(d))[0] = ((const uint16 *)(s))[0]; \
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((uint16 *)(d))[1] = ((const uint16 *)(s))[1]; \
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((uint16 *)(d))[2] = ((const uint16 *)(s))[2]; \
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} while (0)
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#define ether_copy(s, d) eacopy(s, d)
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/* Copy an ethernet address in reverse order */
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#define ether_rcopy(s, d) \
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do { \
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((uint16 *)(d))[2] = ((uint16 *)(s))[2]; \
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((uint16 *)(d))[1] = ((uint16 *)(s))[1]; \
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((uint16 *)(d))[0] = ((uint16 *)(s))[0]; \
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} while (0)
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/* Copy 14B ethernet header: 32bit aligned source and destination. */
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#define ehcopy32(s, d) \
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do { \
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((uint32 *)(d))[0] = ((const uint32 *)(s))[0]; \
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((uint32 *)(d))[1] = ((const uint32 *)(s))[1]; \
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((uint32 *)(d))[2] = ((const uint32 *)(s))[2]; \
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((uint16 *)(d))[6] = ((const uint16 *)(s))[6]; \
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} while (0)
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static const struct ether_addr ether_bcast = {{255, 255, 255, 255, 255, 255}};
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static const struct ether_addr ether_null = {{0, 0, 0, 0, 0, 0}};
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static const struct ether_addr ether_ipv6_mcast = {{0x33, 0x33, 0x00, 0x00, 0x00, 0x01}};
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#define ETHER_ISBCAST(ea) ((((const uint8 *)(ea))[0] & \
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((const uint8 *)(ea))[1] & \
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((const uint8 *)(ea))[2] & \
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((const uint8 *)(ea))[3] & \
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((const uint8 *)(ea))[4] & \
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((const uint8 *)(ea))[5]) == 0xff)
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#define ETHER_ISNULLADDR(ea) ((((const uint8 *)(ea))[0] | \
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((const uint8 *)(ea))[1] | \
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((const uint8 *)(ea))[2] | \
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((const uint8 *)(ea))[3] | \
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((const uint8 *)(ea))[4] | \
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((const uint8 *)(ea))[5]) == 0)
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#define ETHER_ISNULLDEST(da) ((((const uint16 *)(da))[0] | \
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((const uint16 *)(da))[1] | \
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((const uint16 *)(da))[2]) == 0)
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#define ETHER_ISNULLSRC(sa) ETHER_ISNULLDEST(sa)
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#define ETHER_MOVE_HDR(d, s) \
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do { \
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struct ether_header t; \
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t = *(struct ether_header *)(s); \
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*(struct ether_header *)(d) = t; \
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} while (0)
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#define ETHER_ISUCAST(ea) ((((uint8 *)(ea))[0] & 0x01) == 0)
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/* This marks the end of a packed structure section. */
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#include <packed_section_end.h>
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#endif /* _NET_ETHERNET_H_ */
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