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/*
* From FreeBSD 2.2.7: Fundamental constants relating to ethernet.
*
* Copyright (C) 2015, Broadcom Corporation. All Rights Reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $Id: ethernet.h 370577 2012-11-22 07:55:21Z $
*/
#ifndef _NET_ETHERNET_H_
#define _NET_ETHERNET_H_
#ifndef _TYPEDEFS_H_
#include "typedefs.h"
#endif
#include <packed_section_start.h>
#define ETHER_ADDR_LEN 6
#define ETHER_TYPE_LEN 2
#define ETHER_CRC_LEN 4
#define ETHER_HDR_LEN (ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN)
#define ETHER_MIN_LEN 64
#define ETHER_MIN_DATA 46
#define ETHER_MAX_LEN 1518
#define ETHER_MAX_DATA 1500
#define ETHER_TYPE_MIN 0x0600
#define ETHER_TYPE_IP 0x0800
#define ETHER_TYPE_ARP 0x0806
#define ETHER_TYPE_8021Q 0x8100
#define ETHER_TYPE_IPV6 0x86dd
#define ETHER_TYPE_BRCM 0x886c
#define ETHER_TYPE_802_1X 0x888e
#define ETHER_TYPE_802_1X_PREAUTH 0x88c7
#define ETHER_TYPE_WAI 0x88b4
#define ETHER_TYPE_89_0D 0x890d
#define ETHER_TYPE_PPP_SES 0x8864
#define ETHER_TYPE_IPV6 0x86dd
#define ETHER_BRCM_SUBTYPE_LEN 4
#define ETHER_DEST_OFFSET (0 * ETHER_ADDR_LEN)
#define ETHER_SRC_OFFSET (1 * ETHER_ADDR_LEN)
#define ETHER_TYPE_OFFSET (2 * ETHER_ADDR_LEN)
#define ETHER_IS_VALID_LEN(foo) \
((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
#define ETHER_FILL_MCAST_ADDR_FROM_IP(ea, mgrp_ip) { \
((uint8 *)ea)[0] = 0x01; \
((uint8 *)ea)[1] = 0x00; \
((uint8 *)ea)[2] = 0x5e; \
((uint8 *)ea)[3] = ((mgrp_ip) >> 16) & 0x7f; \
((uint8 *)ea)[4] = ((mgrp_ip) >> 8) & 0xff; \
((uint8 *)ea)[5] = ((mgrp_ip) >> 0) & 0xff; \
}
#ifndef __INCif_etherh
BWL_PRE_PACKED_STRUCT struct ether_header {
uint8 ether_dhost[ETHER_ADDR_LEN];
uint8 ether_shost[ETHER_ADDR_LEN];
uint16 ether_type;
} BWL_POST_PACKED_STRUCT;
BWL_PRE_PACKED_STRUCT struct ether_addr {
uint8 octet[ETHER_ADDR_LEN];
} BWL_POST_PACKED_STRUCT;
#endif
#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] & 0xfd))
#define ETHER_TOGGLE_LOCALADDR(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] ^ 2))
#define ETHER_SET_UNICAST(ea) (((uint8 *)(ea))[0] = (((uint8 *)(ea))[0] & ~1))
#define ETHER_ISMULTI(ea) (((const uint8 *)(ea))[0] & 1)
#define eacmp(a, b) ((((const uint16 *)(a))[0] ^ ((const uint16 *)(b))[0]) | \
(((const uint16 *)(a))[1] ^ ((const uint16 *)(b))[1]) | \
(((const uint16 *)(a))[2] ^ ((const uint16 *)(b))[2]))
#define ether_cmp(a, b) eacmp(a, b)
#define eacopy(s, d) \
do { \
((uint16 *)(d))[0] = ((const uint16 *)(s))[0]; \
((uint16 *)(d))[1] = ((const uint16 *)(s))[1]; \
((uint16 *)(d))[2] = ((const uint16 *)(s))[2]; \
} while (0)
#define ether_copy(s, d) eacopy(s, d)
#define ether_rcopy(s, d) \
do { \
((uint16 *)(d))[2] = ((uint16 *)(s))[2]; \
((uint16 *)(d))[1] = ((uint16 *)(s))[1]; \
((uint16 *)(d))[0] = ((uint16 *)(s))[0]; \
} while (0)
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}};
static const struct ether_addr ether_ipv6_mcast = {{0x33, 0x33, 0x00, 0x00, 0x00, 0x01}};
#define ETHER_ISBCAST(ea) ((((const uint8 *)(ea))[0] & \
((const uint8 *)(ea))[1] & \
((const uint8 *)(ea))[2] & \
((const uint8 *)(ea))[3] & \
((const uint8 *)(ea))[4] & \
((const uint8 *)(ea))[5]) == 0xff)
#define ETHER_ISNULLADDR(ea) ((((const uint8 *)(ea))[0] | \
((const uint8 *)(ea))[1] | \
((const uint8 *)(ea))[2] | \
((const uint8 *)(ea))[3] | \
((const uint8 *)(ea))[4] | \
((const uint8 *)(ea))[5]) == 0)
#define ETHER_ISNULLDEST(da) ((((const uint16 *)(da))[0] | \
((const uint16 *)(da))[1] | \
((const uint16 *)(da))[2]) == 0)
#define ETHER_ISNULLSRC(sa) ETHER_ISNULLDEST(sa)
#define ETHER_MOVE_HDR(d, s) \
do { \
struct ether_header t; \
t = *(struct ether_header *)(s); \
*(struct ether_header *)(d) = t; \
} while (0)
#define ETHER_ISUCAST(ea) ((((uint8 *)(ea))[0] & 0x01) == 0)
#include <packed_section_end.h>
#endif
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