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 36#define ETHERMTU 1500 37#define ETHERHDRSIZE 14 38#define ETHERCRC 4 39#define KDP_MAXPACKET (ETHERHDRSIZE + ETHERMTU + ETHERCRC) 40 41struct in_addr { 42 u_long s_addr; 43}; 44 45struct ether_addr { 46 u_char ether_addr_octet[6]; 47}; 48 49typedef struct ether_addr enet_addr_t; 50 51extern struct ether_addr kdp_get_mac_addr(void); 52unsigned int kdp_get_ip_address(void); 53 54struct ipovly { 55 caddr_t ih_next, ih_prev; /* for protocol sequence q's */ 56 u_char ih_x1; /* (unused) */ 57 u_char ih_pr; /* protocol */ 58 short ih_len; /* protocol length */ 59 struct in_addr ih_src; /* source internet address */ 60 struct in_addr ih_dst; /* destination internet address */ 61}; 62 63struct udphdr { 64 u_short uh_sport; /* source port */ 65 u_short uh_dport; /* destination port */ 66 short uh_ulen; /* udp length */ 67 u_short uh_sum; /* udp checksum */ 68}; 69 70struct udpiphdr { 71 struct ipovly ui_i; /* overlaid ip structure */ 72 struct udphdr ui_u; /* udp header */ 73}; 74#define ui_next ui_i.ih_next 75#define ui_prev ui_i.ih_prev 76#define ui_x1 ui_i.ih_x1 77#define ui_pr ui_i.ih_pr 78#define ui_len ui_i.ih_len 79#define ui_src ui_i.ih_src 80#define ui_dst ui_i.ih_dst 81#define ui_sport ui_u.uh_sport 82#define ui_dport ui_u.uh_dport 83#define ui_ulen ui_u.uh_ulen 84#define ui_sum ui_u.uh_sum 85 86struct ip { 87 union { 88 u_long ip_w; 89 struct { 90 unsigned int 91#ifdef __LITTLE_ENDIAN__ 92 ip_xhl:4, /* header length */ 93 ip_xv:4, /* version */ 94 ip_xtos:8, /* type of service */ 95 ip_xlen:16; /* total length */ 96#endif 97#ifdef __BIG_ENDIAN__ 98 ip_xv:4, /* version */ 99 ip_xhl:4, /* header length */ 100 ip_xtos:8, /* type of service */ 101 ip_xlen:16; /* total length */ 102#endif 103 } ip_x; 104 } ip_vhltl; 105 u_short ip_id; /* identification */ 106 short ip_off; /* fragment offset field */ 107#define IP_DF 0x4000 /* dont fragment flag */ 108#define IP_MF 0x2000 /* more fragments flag */ 109#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ 110 u_char ip_ttl; /* time to live */ 111 u_char ip_p; /* protocol */ 112 u_short ip_sum; /* checksum */ 113 struct in_addr ip_src,ip_dst; /* source and dest address */ 114}; 115#define ip_v ip_vhltl.ip_x.ip_xv 116#define ip_hl ip_vhltl.ip_x.ip_xhl 117#define ip_tos ip_vhltl.ip_x.ip_xtos 118#define ip_len ip_vhltl.ip_x.ip_xlen 119 120#define IPPROTO_UDP 17 121#define IPVERSION 4 122 123struct ether_header { 124 u_char ether_dhost[6]; 125 u_char ether_shost[6]; 126 u_short ether_type; 127}; 128 129typedef struct ether_header ether_header_t; 130 131#define ETHERTYPE_IP 0x0800 /* IP protocol */ 132 133#define ntohs(x) OSSwapBigToHostInt16(x) 134#define ntohl(x) OSSwapBigToHostInt32(x) 135#define htons(x) OSSwapHostToBigInt16(x) 136#define htonl(x) OSSwapHostToBigInt32(x) 137/* 138 * Ethernet Address Resolution Protocol. 139 * 140 * See RFC 826 for protocol description. Structure below is adapted 141 * to resolving internet addresses. Field names used correspond to 142 * RFC 826. 143 */ 144 145#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */ 146 147struct arphdr { 148 u_short ar_hrd; /* format of hardware address */ 149#define ARPHRD_ETHER 1 /* ethernet hardware format */ 150#define ARPHRD_FRELAY 15 /* frame relay hardware format */ 151 u_short ar_pro; /* format of protocol address */ 152 u_char ar_hln; /* length of hardware address */ 153 u_char ar_pln; /* length of protocol address */ 154 u_short ar_op; /* one of: */ 155#define ARPOP_REQUEST 1 /* request to resolve address */ 156#define ARPOP_REPLY 2 /* response to previous request */ 157#define ARPOP_REVREQUEST 3 /* request protocol address given hardware */ 158#define ARPOP_REVREPLY 4 /* response giving protocol address */ 159#define ARPOP_INVREQUEST 8 /* request to identify peer */ 160#define ARPOP_INVREPLY 9 /* response identifying peer */ 161}; 162 163#define ETHER_ADDR_LEN 6 164 165struct ether_arp { 166 struct arphdr ea_hdr; /* fixed-size header */ 167 u_char arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */ 168 u_char arp_spa[4]; /* sender protocol address */ 169 u_char arp_tha[ETHER_ADDR_LEN]; /* target hardware address */ 170 u_char arp_tpa[4]; /* target protocol address */ 171}; 172#define arp_hrd ea_hdr.ar_hrd 173#define arp_pro ea_hdr.ar_pro 174#define arp_hln ea_hdr.ar_hln 175#define arp_pln ea_hdr.ar_pln 176#define arp_op ea_hdr.ar_op 177