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      1 /*
      2  * Copyright (C) 1999-2013, Broadcom Corporation
      3  *
      4  * Permission to use, copy, modify, and/or distribute this software for any
      5  * purpose with or without fee is hereby granted, provided that the above
      6  * copyright notice and this permission notice appear in all copies.
      7  *
      8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
     13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
     14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     15  *
     16  * Fundamental constants relating to 802.3
     17  *
     18  * $Id: 802.3.h 382882 2013-02-04 23:24:31Z $
     19  */
     20 
     21 #ifndef _802_3_h_
     22 #define _802_3_h_
     23 
     24 /* This marks the start of a packed structure section. */
     25 #include <packed_section_start.h>
     26 
     27 #define SNAP_HDR_LEN	6	/* 802.3 SNAP header length */
     28 #define DOT3_OUI_LEN	3	/* 802.3 oui length */
     29 
     30 BWL_PRE_PACKED_STRUCT struct dot3_mac_llc_snap_header {
     31 	uint8	ether_dhost[ETHER_ADDR_LEN];	/* dest mac */
     32 	uint8	ether_shost[ETHER_ADDR_LEN];	/* src mac */
     33 	uint16	length;				/* frame length incl header */
     34 	uint8	dsap;				/* always 0xAA */
     35 	uint8	ssap;				/* always 0xAA */
     36 	uint8	ctl;				/* always 0x03 */
     37 	uint8	oui[DOT3_OUI_LEN];		/* RFC1042: 0x00 0x00 0x00
     38 						 * Bridge-Tunnel: 0x00 0x00 0xF8
     39 						 */
     40 	uint16	type;				/* ethertype */
     41 } BWL_POST_PACKED_STRUCT;
     42 
     43 /* This marks the end of a packed structure section. */
     44 #include <packed_section_end.h>
     45 
     46 #endif	/* #ifndef _802_3_h_ */
     47