xref: /hardware/broadcom/wlan/bcmdhd/dhdutil/include/proto/802.3.h

/*
 * Copyright (C) 1999-2013, 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.
 *
 * Fundamental constants relating to 802.3
 *
 * $Id: 802.3.h 382882 2013-02-04 23:24:31Z $
 */

#ifndef _802_3_h_
#define _802_3_h_

/* This marks the start of a packed structure section. */
#include <packed_section_start.h>

#define SNAP_HDR_LEN	6	/* 802.3 SNAP header length */
#define DOT3_OUI_LEN	3	/* 802.3 oui length */

BWL_PRE_PACKED_STRUCT struct dot3_mac_llc_snap_header {
	uint8	ether_dhost[ETHER_ADDR_LEN];	/* dest mac */
	uint8	ether_shost[ETHER_ADDR_LEN];	/* src mac */
	uint16	length;				/* frame length incl header */
	uint8	dsap;				/* always 0xAA */
	uint8	ssap;				/* always 0xAA */
	uint8	ctl;				/* always 0x03 */
	uint8	oui[DOT3_OUI_LEN];		/* RFC1042: 0x00 0x00 0x00
						 * Bridge-Tunnel: 0x00 0x00 0xF8
						 */
	uint16	type;				/* ethertype */
} BWL_POST_PACKED_STRUCT;

/* This marks the end of a packed structure section. */
#include <packed_section_end.h>

#endif	/* #ifndef _802_3_h_ */