1 /* 2 * Fundamental constants relating to 802.3 3 * 4 * Portions of this code are copyright (c) 2021 Cypress Semiconductor Corporation 5 * 6 * Copyright (C) 1999-2017, Broadcom Corporation 7 * 8 * Unless you and Broadcom execute a separate written software license 9 * agreement governing use of this software, this software is licensed to you 10 * under the terms of the GNU General Public License version 2 (the "GPL"), 11 * available at http://www.broadcom.com/licenses/GPLv2.php, with the 12 * following added to such license: 13 * 14 * As a special exception, the copyright holders of this software give you 15 * permission to link this software with independent modules, and to copy and 16 * distribute the resulting executable under terms of your choice, provided that 17 * you also meet, for each linked independent module, the terms and conditions of 18 * the license of that module. An independent module is a module which is not 19 * derived from this software. The special exception does not apply to any 20 * modifications of the software. 21 * 22 * Notwithstanding the above, under no circumstances may you combine this 23 * software in any way with any other Broadcom software provided under a license 24 * other than the GPL, without Broadcom's express prior written consent. 25 * 26 * 27 * <<Broadcom-WL-IPTag/Open:>> 28 * 29 * $Id$ 30 */ 31 32 #ifndef _802_3_h_ 33 #define _802_3_h_ 34 35 /* This marks the start of a packed structure section. */ 36 #include <packed_section_start.h> 37 38 #define SNAP_HDR_LEN 6 /* 802.3 SNAP header length */ 39 #define DOT3_OUI_LEN 3 /* 802.3 oui length */ 40 41 BWL_PRE_PACKED_STRUCT struct dot3_mac_llc_snap_header { 42 uint8 ether_dhost[ETHER_ADDR_LEN]; /* dest mac */ 43 uint8 ether_shost[ETHER_ADDR_LEN]; /* src mac */ 44 uint16 length; /* frame length incl header */ 45 uint8 dsap; /* always 0xAA */ 46 uint8 ssap; /* always 0xAA */ 47 uint8 ctl; /* always 0x03 */ 48 uint8 oui[DOT3_OUI_LEN]; /* RFC1042: 0x00 0x00 0x00 49 * Bridge-Tunnel: 0x00 0x00 0xF8 50 */ 51 uint16 type; /* ethertype */ 52 } BWL_POST_PACKED_STRUCT; 53 54 /* This marks the end of a packed structure section. */ 55 #include <packed_section_end.h> 56 57 #endif /* #ifndef _802_3_h_ */ 58