/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. */ #include <libsa/types.h> #include <libkern/OSByteOrder.h> /* OSSwap functions */ #include <stdint.h> #define ETHERMTU 1500 #define ETHERHDRSIZE 14 #define ETHERCRC 4 #define KDP_MAXPACKET (ETHERHDRSIZE + ETHERMTU + ETHERCRC) struct in_addr { uint32_t s_addr; }; struct ether_addr { u_char ether_addr_octet[6]; }; typedef struct ether_addr enet_addr_t; extern struct ether_addr kdp_get_mac_addr(void); unsigned int kdp_get_ip_address(void); struct ipovly { uint32_t ih_next, ih_prev; /* for protocol sequence q's */ u_char ih_x1; /* (unused) */ u_char ih_pr; /* protocol */ short ih_len; /* protocol length */ struct in_addr ih_src; /* source internet address */ struct in_addr ih_dst; /* destination internet address */ }; struct udphdr { u_short uh_sport; /* source port */ u_short uh_dport; /* destination port */ short uh_ulen; /* udp length */ u_short uh_sum; /* udp checksum */ }; struct udpiphdr { struct ipovly ui_i; /* overlaid ip structure */ struct udphdr ui_u; /* udp header */ }; #define ui_next ui_i.ih_next #define ui_prev ui_i.ih_prev #define ui_x1 ui_i.ih_x1 #define ui_pr ui_i.ih_pr #define ui_len ui_i.ih_len #define ui_src ui_i.ih_src #define ui_dst ui_i.ih_dst #define ui_sport ui_u.uh_sport #define ui_dport ui_u.uh_dport #define ui_ulen ui_u.uh_ulen #define ui_sum ui_u.uh_sum struct ip { union { uint32_t ip_w; struct { unsigned int #ifdef __LITTLE_ENDIAN__ ip_xhl:4, /* header length */ ip_xv:4, /* version */ ip_xtos:8, /* type of service */ ip_xlen:16; /* total length */ #endif #ifdef __BIG_ENDIAN__ ip_xv:4, /* version */ ip_xhl:4, /* header length */ ip_xtos:8, /* type of service */ ip_xlen:16; /* total length */ #endif } ip_x; } ip_vhltl; u_short ip_id; /* identification */ short ip_off; /* fragment offset field */ #define IP_DF 0x4000 /* dont fragment flag */ #define IP_MF 0x2000 /* more fragments flag */ #define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ u_char ip_ttl; /* time to live */ u_char ip_p; /* protocol */ u_short ip_sum; /* checksum */ struct in_addr ip_src,ip_dst; /* source and dest address */ }; #define ip_v ip_vhltl.ip_x.ip_xv #define ip_hl ip_vhltl.ip_x.ip_xhl #define ip_tos ip_vhltl.ip_x.ip_xtos #define ip_len ip_vhltl.ip_x.ip_xlen #define IPPROTO_UDP 17 #define IPVERSION 4 struct ether_header { u_char ether_dhost[6]; u_char ether_shost[6]; u_short ether_type; }; typedef struct ether_header ether_header_t; #define ETHERTYPE_IP 0x0800 /* IP protocol */ #define ntohs(x) OSSwapBigToHostInt16(x) #define ntohl(x) OSSwapBigToHostInt32(x) #define htons(x) OSSwapHostToBigInt16(x) #define htonl(x) OSSwapHostToBigInt32(x) /* * Ethernet Address Resolution Protocol. * * See RFC 826 for protocol description. Structure below is adapted * to resolving internet addresses. Field names used correspond to * RFC 826. */ #define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */ struct arphdr { u_short ar_hrd; /* format of hardware address */ #define ARPHRD_ETHER 1 /* ethernet hardware format */ #define ARPHRD_FRELAY 15 /* frame relay hardware format */ u_short ar_pro; /* format of protocol address */ u_char ar_hln; /* length of hardware address */ u_char ar_pln; /* length of protocol address */ u_short ar_op; /* one of: */ #define ARPOP_REQUEST 1 /* request to resolve address */ #define ARPOP_REPLY 2 /* response to previous request */ #define ARPOP_REVREQUEST 3 /* request protocol address given hardware */ #define ARPOP_REVREPLY 4 /* response giving protocol address */ #define ARPOP_INVREQUEST 8 /* request to identify peer */ #define ARPOP_INVREPLY 9 /* response identifying peer */ }; #define ETHER_ADDR_LEN 6 struct ether_arp { struct arphdr ea_hdr; /* fixed-size header */ u_char arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */ u_char arp_spa[4]; /* sender protocol address */ u_char arp_tha[ETHER_ADDR_LEN]; /* target hardware address */ u_char arp_tpa[4]; /* target protocol address */ }; #define arp_hrd ea_hdr.ar_hrd #define arp_pro ea_hdr.ar_pro #define arp_hln ea_hdr.ar_hln #define arp_pln ea_hdr.ar_pln #define arp_op ea_hdr.ar_op