1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * 802.1Q VLAN protocol definitions 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (C) 2020, Broadcom. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Unless you and Broadcom execute a separate written software license 7*4882a593Smuzhiyun * agreement governing use of this software, this software is licensed to you 8*4882a593Smuzhiyun * under the terms of the GNU General Public License version 2 (the "GPL"), 9*4882a593Smuzhiyun * available at http://www.broadcom.com/licenses/GPLv2.php, with the 10*4882a593Smuzhiyun * following added to such license: 11*4882a593Smuzhiyun * 12*4882a593Smuzhiyun * As a special exception, the copyright holders of this software give you 13*4882a593Smuzhiyun * permission to link this software with independent modules, and to copy and 14*4882a593Smuzhiyun * distribute the resulting executable under terms of your choice, provided that 15*4882a593Smuzhiyun * you also meet, for each linked independent module, the terms and conditions of 16*4882a593Smuzhiyun * the license of that module. An independent module is a module which is not 17*4882a593Smuzhiyun * derived from this software. The special exception does not apply to any 18*4882a593Smuzhiyun * modifications of the software. 19*4882a593Smuzhiyun * 20*4882a593Smuzhiyun * 21*4882a593Smuzhiyun * <<Broadcom-WL-IPTag/Dual:>> 22*4882a593Smuzhiyun */ 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun #ifndef _vlan_h_ 25*4882a593Smuzhiyun #define _vlan_h_ 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #ifndef _TYPEDEFS_H_ 28*4882a593Smuzhiyun #include <typedefs.h> 29*4882a593Smuzhiyun #endif 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun /* This marks the start of a packed structure section. */ 32*4882a593Smuzhiyun #include <packed_section_start.h> 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun #ifndef VLAN_VID_MASK 35*4882a593Smuzhiyun #define VLAN_VID_MASK 0xfff /* low 12 bits are vlan id */ 36*4882a593Smuzhiyun #endif 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun #define VLAN_CFI_SHIFT 12 /* canonical format indicator bit */ 39*4882a593Smuzhiyun #define VLAN_PRI_SHIFT 13 /* user priority */ 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun #define VLAN_PRI_MASK 7 /* 3 bits of priority */ 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #define VLAN_TPID_OFFSET 12 /* offset of tag protocol id field */ 44*4882a593Smuzhiyun #define VLAN_TCI_OFFSET 14 /* offset of tag ctrl info field */ 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun #define VLAN_TAG_LEN 4 47*4882a593Smuzhiyun #define VLAN_TAG_OFFSET (2 * ETHER_ADDR_LEN) /* offset in Ethernet II packet only */ 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun #define VLAN_TPID 0x8100 /* VLAN ethertype/Tag Protocol ID */ 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun struct vlan_header { 52*4882a593Smuzhiyun uint16 vlan_type; /* 0x8100 */ 53*4882a593Smuzhiyun uint16 vlan_tag; /* priority, cfi and vid */ 54*4882a593Smuzhiyun }; 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun BWL_PRE_PACKED_STRUCT struct ethervlan_header { 57*4882a593Smuzhiyun uint8 ether_dhost[ETHER_ADDR_LEN]; 58*4882a593Smuzhiyun uint8 ether_shost[ETHER_ADDR_LEN]; 59*4882a593Smuzhiyun uint16 vlan_type; /* 0x8100 */ 60*4882a593Smuzhiyun uint16 vlan_tag; /* priority, cfi and vid */ 61*4882a593Smuzhiyun uint16 ether_type; 62*4882a593Smuzhiyun } BWL_POST_PACKED_STRUCT; 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun struct dot3_mac_llc_snapvlan_header { 65*4882a593Smuzhiyun uint8 ether_dhost[ETHER_ADDR_LEN]; /* dest mac */ 66*4882a593Smuzhiyun uint8 ether_shost[ETHER_ADDR_LEN]; /* src mac */ 67*4882a593Smuzhiyun uint16 length; /* frame length incl header */ 68*4882a593Smuzhiyun uint8 dsap; /* always 0xAA */ 69*4882a593Smuzhiyun uint8 ssap; /* always 0xAA */ 70*4882a593Smuzhiyun uint8 ctl; /* always 0x03 */ 71*4882a593Smuzhiyun uint8 oui[3]; /* RFC1042: 0x00 0x00 0x00 72*4882a593Smuzhiyun * Bridge-Tunnel: 0x00 0x00 0xF8 73*4882a593Smuzhiyun */ 74*4882a593Smuzhiyun uint16 vlan_type; /* 0x8100 */ 75*4882a593Smuzhiyun uint16 vlan_tag; /* priority, cfi and vid */ 76*4882a593Smuzhiyun uint16 ether_type; /* ethertype */ 77*4882a593Smuzhiyun }; 78*4882a593Smuzhiyun 79*4882a593Smuzhiyun #define ETHERVLAN_HDR_LEN (ETHER_HDR_LEN + VLAN_TAG_LEN) 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun /* This marks the end of a packed structure section. */ 82*4882a593Smuzhiyun #include <packed_section_end.h> 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun #define ETHERVLAN_MOVE_HDR(d, s) \ 85*4882a593Smuzhiyun do { \ 86*4882a593Smuzhiyun struct ethervlan_header t; \ 87*4882a593Smuzhiyun t = *(struct ethervlan_header *)(s); \ 88*4882a593Smuzhiyun *(struct ethervlan_header *)(d) = t; \ 89*4882a593Smuzhiyun } while (0) 90*4882a593Smuzhiyun 91*4882a593Smuzhiyun #endif /* _vlan_h_ */ 92