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/*
* Copyright (c) 2010 Broadcom Corporation
*
* 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.
*/
#ifndef _NET_ETHERNET_H_
#define _NET_ETHERNET_H_
#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_BRCM 0x886c
#define ETHER_TYPE_802_1X 0x888e
#define ETHER_TYPE_802_1X_PREAUTH 0x88c7
#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) { \
((u8 *)ea)[0] = 0x01; \
((u8 *)ea)[1] = 0x00; \
((u8 *)ea)[2] = 0x5e; \
((u8 *)ea)[3] = ((mgrp_ip) >> 16) & 0x7f; \
((u8 *)ea)[4] = ((mgrp_ip) >> 8) & 0xff; \
((u8 *)ea)[5] = ((mgrp_ip) >> 0) & 0xff; \
}
BWL_PRE_PACKED_STRUCT struct ether_header {
u8 ether_dhost[ETHER_ADDR_LEN];
u8 ether_shost[ETHER_ADDR_LEN];
u16 ether_type;
} BWL_POST_PACKED_STRUCT;
BWL_PRE_PACKED_STRUCT struct ether_addr {
u8 octet[ETHER_ADDR_LEN];
} BWL_POST_PACKED_STRUCT;
#define ETHER_SET_LOCALADDR(ea) (((u8 *)(ea))[0] = (((u8 *)(ea))[0] | 2))
#define ETHER_IS_LOCALADDR(ea) (((u8 *)(ea))[0] & 2)
#define ETHER_CLR_LOCALADDR(ea) (((u8 *)(ea))[0] = \
(((u8 *)(ea))[0] & 0xd))
#define ETHER_TOGGLE_LOCALADDR(ea) (((u8 *)(ea))[0] = \
(((u8 *)(ea))[0] ^ 2))
#define ETHER_SET_UNICAST(ea) (((u8 *)(ea))[0] = (((u8 *)(ea))[0] & ~1))
#define ETHER_ISMULTI(ea) (((const u8 *)(ea))[0] & 1)
#define ether_cmp(a, b) (!(((short *)a)[0] == ((short *)b)[0]) | \
!(((short *)a)[1] == ((short *)b)[1]) | \
!(((short *)a)[2] == ((short *)b)[2]))
#define ether_copy(s, d) { \
((short *)d)[0] = ((short *)s)[0]; \
((short *)d)[1] = ((short *)s)[1]; \
((short *)d)[2] = ((short *)s)[2]; }
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} };
#define ETHER_ISBCAST(ea) ((((u8 *)(ea))[0] & \
((u8 *)(ea))[1] & \
((u8 *)(ea))[2] & \
((u8 *)(ea))[3] & \
((u8 *)(ea))[4] & \
((u8 *)(ea))[5]) == 0xff)
#define ETHER_ISNULLADDR(ea) ((((u8 *)(ea))[0] | \
((u8 *)(ea))[1] | \
((u8 *)(ea))[2] | \
((u8 *)(ea))[3] | \
((u8 *)(ea))[4] | \
((u8 *)(ea))[5]) == 0)
#define ETHER_MOVE_HDR(d, s) \
do { \
struct ether_header t; \
t = *(struct ether_header *)(s); \
*(struct ether_header *)(d) = t; \
} while (0)
#include <packed_section_end.h>
#endif /* _NET_ETHERNET_H_ */
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