osfmk/kdp/kdp_udp.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1982, 1986, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  */
  26
  27 #include <libsa/types.h>
  28 #include <libkern/OSByteOrder.h>   /* OSSwap functions */
  29
  30 #define     ETHERMTU        1500
  31 #define     ETHERHDRSIZE    14
  32 #define     ETHERCRC        4
  33 #define     KDP_MAXPACKET   (ETHERHDRSIZE + ETHERMTU + ETHERCRC)
  34
  35 struct in_addr {
  36         u_long s_addr;
  37 };
  38
  39 struct ether_addr {
  40         u_char ether_addr_octet[6];
  41 };
  42
  43 typedef struct ether_addr enet_addr_t;
  44
  45 extern struct ether_addr kdp_get_mac_addr(void);
  46 unsigned int  kdp_get_ip_address(void);
  47
  48 struct ipovly {
  49         caddr_t ih_next, ih_prev;       /* for protocol sequence q's */
  50         u_char  ih_x1;                  /* (unused) */
  51         u_char  ih_pr;                  /* protocol */
  52         short   ih_len;                 /* protocol length */
  53         struct  in_addr ih_src;         /* source internet address */
  54         struct  in_addr ih_dst;         /* destination internet address */
  55 };
  56
  57 struct udphdr {
  58         u_short uh_sport;               /* source port */
  59         u_short uh_dport;               /* destination port */
  60         short   uh_ulen;                /* udp length */
  61         u_short uh_sum;                 /* udp checksum */
  62 };
  63
  64 struct  udpiphdr {
  65         struct  ipovly ui_i;            /* overlaid ip structure */
  66         struct  udphdr ui_u;            /* udp header */
  67 };
  68 #define ui_next         ui_i.ih_next
  69 #define ui_prev         ui_i.ih_prev
  70 #define ui_x1           ui_i.ih_x1
  71 #define ui_pr           ui_i.ih_pr
  72 #define ui_len          ui_i.ih_len
  73 #define ui_src          ui_i.ih_src
  74 #define ui_dst          ui_i.ih_dst
  75 #define ui_sport        ui_u.uh_sport
  76 #define ui_dport        ui_u.uh_dport
  77 #define ui_ulen         ui_u.uh_ulen
  78 #define ui_sum          ui_u.uh_sum
  79
  80 struct ip {
  81         union {
  82                 u_long ip_w;
  83                 struct {
  84                         unsigned int
  85 #if _BIG_ENDIAN == __LITTLE_ENDIAN__
  86                         ip_xhl:4,       /* header length */
  87                         ip_xv:4,                /* version */
  88                         ip_xtos:8,      /* type of service */
  89                         ip_xlen:16;     /* total length */
  90 #endif
  91 #if _BIG_ENDIAN == __BIG_ENDIAN__
  92                         ip_xv:4,                 /* version */
  93                         ip_xhl:4,                /* header length */
  94                         ip_xtos:8,               /* type of service */
  95                         ip_xlen:16;               /* total length */
  96 #endif
  97                 } ip_x;
  98         } ip_vhltl;
  99         u_short ip_id;                  /* identification */
 100         short   ip_off;                 /* fragment offset field */
 101 #define IP_DF 0x4000                    /* dont fragment flag */
 102 #define IP_MF 0x2000                    /* more fragments flag */
 103 #define IP_OFFMASK 0x1fff               /* mask for fragmenting bits */
 104         u_char  ip_ttl;                 /* time to live */
 105         u_char  ip_p;                   /* protocol */
 106         u_short ip_sum;                 /* checksum */
 107         struct  in_addr ip_src,ip_dst;  /* source and dest address */
 108 };
 109 #define ip_v   ip_vhltl.ip_x.ip_xv
 110 #define ip_hl  ip_vhltl.ip_x.ip_xhl
 111 #define ip_tos ip_vhltl.ip_x.ip_xtos
 112 #define ip_len ip_vhltl.ip_x.ip_xlen
 113
 114 #define    IPPROTO_UDP     17
 115 #define    IPVERSION       4
 116
 117 struct  ether_header {
 118         u_char  ether_dhost[6];
 119         u_char  ether_shost[6];
 120         u_short ether_type;
 121 };
 122
 123 typedef struct ether_header ether_header_t;
 124
 125 #define ETHERTYPE_IP       0x0800  /* IP protocol */
 126
 127 #define ntohs(x)           OSSwapBigToHostInt16(x)
 128 #define htons(x)           OSSwapHostToBigInt16(x)
 129
 130 /*
 131  * Ethernet Address Resolution Protocol.
 132  *
 133  * See RFC 826 for protocol description.  Structure below is adapted
 134  * to resolving internet addresses.  Field names used correspond to
 135  * RFC 826.
 136  */
 137
 138 #define ETHERTYPE_ARP          0x0806  /* Addr. resolution protocol */
 139
 140 struct  arphdr {
 141   u_short ar_hrd;         /* format of hardware address */
 142 #define ARPHRD_ETHER    1       /* ethernet hardware format */
 143 #define ARPHRD_FRELAY   15      /* frame relay hardware format */
 144   u_short ar_pro;         /* format of protocol address */
 145   u_char  ar_hln;         /* length of hardware address */
 146   u_char  ar_pln;         /* length of protocol address */
 147   u_short ar_op;          /* one of: */
 148 #define ARPOP_REQUEST   1       /* request to resolve address */
 149 #define ARPOP_REPLY     2       /* response to previous request */
 150 #define ARPOP_REVREQUEST 3      /* request protocol address given hardware */
 151 #define ARPOP_REVREPLY  4       /* response giving protocol address */
 152 #define ARPOP_INVREQUEST 8      /* request to identify peer */
 153 #define ARPOP_INVREPLY  9       /* response identifying peer */
 154 };
 155
 156 #define ETHER_ADDR_LEN 6
 157
 158 struct  ether_arp {
 159   struct  arphdr ea_hdr;  /* fixed-size header */
 160   u_char  arp_sha[ETHER_ADDR_LEN];        /* sender hardware address */
 161   u_char  arp_spa[4];     /* sender protocol address */
 162   u_char  arp_tha[ETHER_ADDR_LEN];        /* target hardware address */
 163   u_char  arp_tpa[4];     /* target protocol address */
 164 };
 165 #define arp_hrd ea_hdr.ar_hrd
 166 #define arp_pro ea_hdr.ar_pro
 167 #define arp_hln ea_hdr.ar_hln
 168 #define arp_pln ea_hdr.ar_pln
 169 #define arp_op  ea_hdr.ar_op