| /* |
| * Fundamental constants relating to ARP Protocol |
| * |
| * Copyright (C) 2020, Broadcom. |
| * |
| * Unless you and Broadcom execute a separate written software license |
| * agreement governing use of this software, this software is licensed to you |
| * under the terms of the GNU General Public License version 2 (the "GPL"), |
| * available at http://www.broadcom.com/licenses/GPLv2.php, with the |
| * following added to such license: |
| * |
| * As a special exception, the copyright holders of this software give you |
| * permission to link this software with independent modules, and to copy and |
| * distribute the resulting executable under terms of your choice, provided that |
| * you also meet, for each linked independent module, the terms and conditions of |
| * the license of that module. An independent module is a module which is not |
| * derived from this software. The special exception does not apply to any |
| * modifications of the software. |
| * |
| * |
| * <<Broadcom-WL-IPTag/Dual:>> |
| */ |
| |
| #ifndef _bcmarp_h_ |
| #define _bcmarp_h_ |
| |
| #ifndef _TYPEDEFS_H_ |
| #include <typedefs.h> |
| #endif |
| #include <bcmip.h> |
| |
| /* This marks the start of a packed structure section. */ |
| #include <packed_section_start.h> |
| |
| #define ARP_OPC_OFFSET 6 /* option code offset */ |
| #define ARP_SRC_ETH_OFFSET 8 /* src h/w address offset */ |
| #define ARP_SRC_IP_OFFSET 14 /* src IP address offset */ |
| #define ARP_TGT_ETH_OFFSET 18 /* target h/w address offset */ |
| #define ARP_TGT_IP_OFFSET 24 /* target IP address offset */ |
| |
| #define ARP_OPC_REQUEST 1 /* ARP request */ |
| #define ARP_OPC_REPLY 2 /* ARP reply */ |
| |
| #define ARP_DATA_LEN 28 /* ARP data length */ |
| |
| #define HTYPE_ETHERNET 1 /* htype for ethernet */ |
| BWL_PRE_PACKED_STRUCT struct bcmarp { |
| uint16 htype; /* Header type (1 = ethernet) */ |
| uint16 ptype; /* Protocol type (0x800 = IP) */ |
| uint8 hlen; /* Hardware address length (Eth = 6) */ |
| uint8 plen; /* Protocol address length (IP = 4) */ |
| uint16 oper; /* ARP_OPC_... */ |
| uint8 src_eth[ETHER_ADDR_LEN]; /* Source hardware address */ |
| uint8 src_ip[IPV4_ADDR_LEN]; /* Source protocol address (not aligned) */ |
| uint8 dst_eth[ETHER_ADDR_LEN]; /* Destination hardware address */ |
| uint8 dst_ip[IPV4_ADDR_LEN]; /* Destination protocol address */ |
| } BWL_POST_PACKED_STRUCT; |
| |
| /* Ethernet header + Arp message */ |
| BWL_PRE_PACKED_STRUCT struct bcmetharp { |
| struct ether_header eh; |
| struct bcmarp arp; |
| } BWL_POST_PACKED_STRUCT; |
| |
| /* IPv6 Neighbor Advertisement */ |
| #define NEIGHBOR_ADVERTISE_SRC_IPV6_OFFSET 8 /* src IPv6 address offset */ |
| #define NEIGHBOR_ADVERTISE_TYPE_OFFSET 40 /* type offset */ |
| #define NEIGHBOR_ADVERTISE_CHECKSUM_OFFSET 42 /* check sum offset */ |
| #define NEIGHBOR_ADVERTISE_FLAGS_OFFSET 44 /* R,S and O flags offset */ |
| #define NEIGHBOR_ADVERTISE_TGT_IPV6_OFFSET 48 /* target IPv6 address offset */ |
| #define NEIGHBOR_ADVERTISE_OPTION_OFFSET 64 /* options offset */ |
| #define NEIGHBOR_ADVERTISE_TYPE 136 |
| #define NEIGHBOR_SOLICITATION_TYPE 135 |
| |
| #define OPT_TYPE_SRC_LINK_ADDR 1 |
| #define OPT_TYPE_TGT_LINK_ADDR 2 |
| |
| #define NEIGHBOR_ADVERTISE_DATA_LEN 72 /* neighbor advertisement data length */ |
| #define NEIGHBOR_ADVERTISE_FLAGS_VALUE 0x60 /* R=0, S=1 and O=1 */ |
| |
| /* This marks the end of a packed structure section. */ |
| #include <packed_section_end.h> |
| |
| #endif /* !defined(_bcmarp_h_) */ |
