1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Fundamental constants relating to ARP Protocol 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Portions of this code are copyright (c) 2021 Cypress Semiconductor Corporation 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Copyright (C) 1999-2017, Broadcom Corporation 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Unless you and Broadcom execute a separate written software license 9*4882a593Smuzhiyun * agreement governing use of this software, this software is licensed to you 10*4882a593Smuzhiyun * under the terms of the GNU General Public License version 2 (the "GPL"), 11*4882a593Smuzhiyun * available at http://www.broadcom.com/licenses/GPLv2.php, with the 12*4882a593Smuzhiyun * following added to such license: 13*4882a593Smuzhiyun * 14*4882a593Smuzhiyun * As a special exception, the copyright holders of this software give you 15*4882a593Smuzhiyun * permission to link this software with independent modules, and to copy and 16*4882a593Smuzhiyun * distribute the resulting executable under terms of your choice, provided that 17*4882a593Smuzhiyun * you also meet, for each linked independent module, the terms and conditions of 18*4882a593Smuzhiyun * the license of that module. An independent module is a module which is not 19*4882a593Smuzhiyun * derived from this software. The special exception does not apply to any 20*4882a593Smuzhiyun * modifications of the software. 21*4882a593Smuzhiyun * 22*4882a593Smuzhiyun * Notwithstanding the above, under no circumstances may you combine this 23*4882a593Smuzhiyun * software in any way with any other Broadcom software provided under a license 24*4882a593Smuzhiyun * other than the GPL, without Broadcom's express prior written consent. 25*4882a593Smuzhiyun * 26*4882a593Smuzhiyun * 27*4882a593Smuzhiyun * <<Broadcom-WL-IPTag/Open:>> 28*4882a593Smuzhiyun * 29*4882a593Smuzhiyun * $Id$ 30*4882a593Smuzhiyun */ 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #ifndef _bcmarp_h_ 33*4882a593Smuzhiyun #define _bcmarp_h_ 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun #ifndef _TYPEDEFS_H_ 36*4882a593Smuzhiyun #include <typedefs.h> 37*4882a593Smuzhiyun #endif // endif 38*4882a593Smuzhiyun #include <bcmip.h> 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun /* This marks the start of a packed structure section. */ 41*4882a593Smuzhiyun #include <packed_section_start.h> 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #define ARP_OPC_OFFSET 6 /* option code offset */ 44*4882a593Smuzhiyun #define ARP_SRC_ETH_OFFSET 8 /* src h/w address offset */ 45*4882a593Smuzhiyun #define ARP_SRC_IP_OFFSET 14 /* src IP address offset */ 46*4882a593Smuzhiyun #define ARP_TGT_ETH_OFFSET 18 /* target h/w address offset */ 47*4882a593Smuzhiyun #define ARP_TGT_IP_OFFSET 24 /* target IP address offset */ 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun #define ARP_OPC_REQUEST 1 /* ARP request */ 50*4882a593Smuzhiyun #define ARP_OPC_REPLY 2 /* ARP reply */ 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun #define ARP_DATA_LEN 28 /* ARP data length */ 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun #define HTYPE_ETHERNET 1 /* htype for ethernet */ 55*4882a593Smuzhiyun #define HTYPE_WLAN 6 /* htype for IEEE 802 */ 56*4882a593Smuzhiyun BWL_PRE_PACKED_STRUCT struct bcmarp { 57*4882a593Smuzhiyun uint16 htype; /* Header type (1 = ethernet) */ 58*4882a593Smuzhiyun uint16 ptype; /* Protocol type (0x800 = IP) */ 59*4882a593Smuzhiyun uint8 hlen; /* Hardware address length (Eth = 6) */ 60*4882a593Smuzhiyun uint8 plen; /* Protocol address length (IP = 4) */ 61*4882a593Smuzhiyun uint16 oper; /* ARP_OPC_... */ 62*4882a593Smuzhiyun uint8 src_eth[ETHER_ADDR_LEN]; /* Source hardware address */ 63*4882a593Smuzhiyun uint8 src_ip[IPV4_ADDR_LEN]; /* Source protocol address (not aligned) */ 64*4882a593Smuzhiyun uint8 dst_eth[ETHER_ADDR_LEN]; /* Destination hardware address */ 65*4882a593Smuzhiyun uint8 dst_ip[IPV4_ADDR_LEN]; /* Destination protocol address */ 66*4882a593Smuzhiyun } BWL_POST_PACKED_STRUCT; 67*4882a593Smuzhiyun 68*4882a593Smuzhiyun /* Ethernet header + Arp message */ 69*4882a593Smuzhiyun BWL_PRE_PACKED_STRUCT struct bcmetharp { 70*4882a593Smuzhiyun struct ether_header eh; 71*4882a593Smuzhiyun struct bcmarp arp; 72*4882a593Smuzhiyun } BWL_POST_PACKED_STRUCT; 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun /* IPv6 Neighbor Advertisement */ 75*4882a593Smuzhiyun #define NEIGHBOR_ADVERTISE_SRC_IPV6_OFFSET 8 /* src IPv6 address offset */ 76*4882a593Smuzhiyun #define NEIGHBOR_ADVERTISE_TYPE_OFFSET 40 /* type offset */ 77*4882a593Smuzhiyun #define NEIGHBOR_ADVERTISE_CHECKSUM_OFFSET 42 /* check sum offset */ 78*4882a593Smuzhiyun #define NEIGHBOR_ADVERTISE_FLAGS_OFFSET 44 /* R,S and O flags offset */ 79*4882a593Smuzhiyun #define NEIGHBOR_ADVERTISE_TGT_IPV6_OFFSET 48 /* target IPv6 address offset */ 80*4882a593Smuzhiyun #define NEIGHBOR_ADVERTISE_OPTION_OFFSET 64 /* options offset */ 81*4882a593Smuzhiyun #define NEIGHBOR_ADVERTISE_TYPE 136 82*4882a593Smuzhiyun #define NEIGHBOR_SOLICITATION_TYPE 135 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun #define OPT_TYPE_SRC_LINK_ADDR 1 85*4882a593Smuzhiyun #define OPT_TYPE_TGT_LINK_ADDR 2 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun #define NEIGHBOR_ADVERTISE_DATA_LEN 72 /* neighbor advertisement data length */ 88*4882a593Smuzhiyun #define NEIGHBOR_ADVERTISE_FLAGS_VALUE 0x60 /* R=0, S=1 and O=1 */ 89*4882a593Smuzhiyun 90*4882a593Smuzhiyun /* This marks the end of a packed structure section. */ 91*4882a593Smuzhiyun #include <packed_section_end.h> 92*4882a593Smuzhiyun 93*4882a593Smuzhiyun #endif /* !defined(_bcmarp_h_) */ 94