1/* 2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * Copyright (c) 1982, 1986, 1993 30 * The Regents of the University of California. All rights reserved. 31 */ 32 33#include <libsa/types.h> 34#include <libkern/OSByteOrder.h> /* OSSwap functions */ 35#include <stdint.h> 36 37#define ETHERMTU 1500 38#define ETHERHDRSIZE 14 39#define ETHERCRC 4 40#define KDP_MAXPACKET (ETHERHDRSIZE + ETHERMTU + ETHERCRC) 41 42struct in_addr { 43 uint32_t s_addr; 44}; 45 46struct ether_addr { 47 u_char ether_addr_octet[6]; 48}; 49 50typedef struct ether_addr enet_addr_t; 51 52extern struct ether_addr kdp_get_mac_addr(void); 53unsigned int kdp_get_ip_address(void); 54 55struct ipovly { 56 uint32_t ih_next, ih_prev; /* for protocol sequence q's */ 57 u_char ih_x1; /* (unused) */ 58 u_char ih_pr; /* protocol */ 59 short ih_len; /* protocol length */ 60 struct in_addr ih_src; /* source internet address */ 61 struct in_addr ih_dst; /* destination internet address */ 62}; 63 64struct udphdr { 65 u_short uh_sport; /* source port */ 66 u_short uh_dport; /* destination port */ 67 short uh_ulen; /* udp length */ 68 u_short uh_sum; /* udp checksum */ 69}; 70 71struct udpiphdr { 72 struct ipovly ui_i; /* overlaid ip structure */ 73 struct udphdr ui_u; /* udp header */ 74}; 75#define ui_next ui_i.ih_next 76#define ui_prev ui_i.ih_prev 77#define ui_x1 ui_i.ih_x1 78#define ui_pr ui_i.ih_pr 79#define ui_len ui_i.ih_len 80#define ui_src ui_i.ih_src 81#define ui_dst ui_i.ih_dst 82#define ui_sport ui_u.uh_sport 83#define ui_dport ui_u.uh_dport 84#define ui_ulen ui_u.uh_ulen 85#define ui_sum ui_u.uh_sum 86 87struct ip { 88 union { 89 uint32_t ip_w; 90 struct { 91 unsigned int 92#ifdef __LITTLE_ENDIAN__ 93 ip_xhl:4, /* header length */ 94 ip_xv:4, /* version */ 95 ip_xtos:8, /* type of service */ 96 ip_xlen:16; /* total length */ 97#endif 98#ifdef __BIG_ENDIAN__ 99 ip_xv:4, /* version */ 100 ip_xhl:4, /* header length */ 101 ip_xtos:8, /* type of service */ 102 ip_xlen:16; /* total length */ 103#endif 104 } ip_x; 105 } ip_vhltl; 106 u_short ip_id; /* identification */ 107 short ip_off; /* fragment offset field */ 108#define IP_DF 0x4000 /* dont fragment flag */ 109#define IP_MF 0x2000 /* more fragments flag */ 110#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ 111 u_char ip_ttl; /* time to live */ 112 u_char ip_p; /* protocol */ 113 u_short ip_sum; /* checksum */ 114 struct in_addr ip_src,ip_dst; /* source and dest address */ 115}; 116#define ip_v ip_vhltl.ip_x.ip_xv 117#define ip_hl ip_vhltl.ip_x.ip_xhl 118#define ip_tos ip_vhltl.ip_x.ip_xtos 119#define ip_len ip_vhltl.ip_x.ip_xlen 120 121#define IPPROTO_UDP 17 122#define IPVERSION 4 123 124struct ether_header { 125 u_char ether_dhost[6]; 126 u_char ether_shost[6]; 127 u_short ether_type; 128}; 129 130typedef struct ether_header ether_header_t; 131 132#define ETHERTYPE_IP 0x0800 /* IP protocol */ 133 134#define ntohs(x) OSSwapBigToHostInt16(x) 135#define ntohl(x) OSSwapBigToHostInt32(x) 136#define htons(x) OSSwapHostToBigInt16(x) 137#define htonl(x) OSSwapHostToBigInt32(x) 138/* 139 * Ethernet Address Resolution Protocol. 140 * 141 * See RFC 826 for protocol description. Structure below is adapted 142 * to resolving internet addresses. Field names used correspond to 143 * RFC 826. 144 */ 145 146#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */ 147 148struct arphdr { 149 u_short ar_hrd; /* format of hardware address */ 150#define ARPHRD_ETHER 1 /* ethernet hardware format */ 151#define ARPHRD_FRELAY 15 /* frame relay hardware format */ 152 u_short ar_pro; /* format of protocol address */ 153 u_char ar_hln; /* length of hardware address */ 154 u_char ar_pln; /* length of protocol address */ 155 u_short ar_op; /* one of: */ 156#define ARPOP_REQUEST 1 /* request to resolve address */ 157#define ARPOP_REPLY 2 /* response to previous request */ 158#define ARPOP_REVREQUEST 3 /* request protocol address given hardware */ 159#define ARPOP_REVREPLY 4 /* response giving protocol address */ 160#define ARPOP_INVREQUEST 8 /* request to identify peer */ 161#define ARPOP_INVREPLY 9 /* response identifying peer */ 162}; 163 164#define ETHER_ADDR_LEN 6 165 166struct ether_arp { 167 struct arphdr ea_hdr; /* fixed-size header */ 168 u_char arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */ 169 u_char arp_spa[4]; /* sender protocol address */ 170 u_char arp_tha[ETHER_ADDR_LEN]; /* target hardware address */ 171 u_char arp_tpa[4]; /* target protocol address */ 172}; 173#define arp_hrd ea_hdr.ar_hrd 174#define arp_pro ea_hdr.ar_pro 175#define arp_hln ea_hdr.ar_hln 176#define arp_pln ea_hdr.ar_pln 177#define arp_op ea_hdr.ar_op 178