1 /* 2 * Fundamental constants relating to 802.3 3 * 4 * Copyright (C) 1999-2017, Broadcom Corporation 5 * 6 * Unless you and Broadcom execute a separate written software license 7 * agreement governing use of this software, this software is licensed to you 8 * under the terms of the GNU General Public License version 2 (the "GPL"), 9 * available at http://www.broadcom.com/licenses/GPLv2.php, with the 10 * following added to such license: 11 * 12 * As a special exception, the copyright holders of this software give you 13 * permission to link this software with independent modules, and to copy and 14 * distribute the resulting executable under terms of your choice, provided that 15 * you also meet, for each linked independent module, the terms and conditions of 16 * the license of that module. An independent module is a module which is not 17 * derived from this software. The special exception does not apply to any 18 * modifications of the software. 19 * 20 * Notwithstanding the above, under no circumstances may you combine this 21 * software in any way with any other Broadcom software provided under a license 22 * other than the GPL, without Broadcom's express prior written consent. 23 * 24 * 25 * <<Broadcom-WL-IPTag/Open:>> 26 * 27 * $Id: 802.3.h 700076 2017-05-17 14:42:22Z $ 28 */ 29 30 #ifndef _802_3_h_ 31 #define _802_3_h_ 32 33 /* This marks the start of a packed structure section. */ 34 #include <packed_section_start.h> 35 36 #define SNAP_HDR_LEN 6 /* 802.3 SNAP header length */ 37 #define DOT3_OUI_LEN 3 /* 802.3 oui length */ 38 39 BWL_PRE_PACKED_STRUCT struct dot3_mac_llc_snap_header { 40 uint8 ether_dhost[ETHER_ADDR_LEN]; /* dest mac */ 41 uint8 ether_shost[ETHER_ADDR_LEN]; /* src mac */ 42 uint16 length; /* frame length incl header */ 43 uint8 dsap; /* always 0xAA */ 44 uint8 ssap; /* always 0xAA */ 45 uint8 ctl; /* always 0x03 */ 46 uint8 oui[DOT3_OUI_LEN]; /* RFC1042: 0x00 0x00 0x00 47 * Bridge-Tunnel: 0x00 0x00 0xF8 48 */ 49 uint16 type; /* ethertype */ 50 } BWL_POST_PACKED_STRUCT; 51 52 /* This marks the end of a packed structure section. */ 53 #include <packed_section_end.h> 54 55 #endif /* #ifndef _802_3_h_ */ 56