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 #include <libkern/OSByteOrder.h>   /* OSSwap functions */
  24
  25 #define     ETHERMTU        1500
  26 #define     ETHERHDRSIZE    14
  27 #define     ETHERCRC        4
  28 #define     KDP_MAXPACKET   (ETHERHDRSIZE + ETHERMTU + ETHERCRC)
  29
  30 struct in_addr {
  31         u_long s_addr;
  32 };
  33
  34 struct ether_addr {
  35         u_char ether_addr_octet[6];
  36 };
  37
  38 typedef struct ether_addr enet_addr_t;
  39
  40 struct ipovly {
  41         caddr_t ih_next, ih_prev;       /* for protocol sequence q's */
  42         u_char  ih_x1;                  /* (unused) */
  43         u_char  ih_pr;                  /* protocol */
  44         short   ih_len;                 /* protocol length */
  45         struct  in_addr ih_src;         /* source internet address */
  46         struct  in_addr ih_dst;         /* destination internet address */
  47 };
  48
  49 struct udphdr {
  50         u_short uh_sport;               /* source port */
  51         u_short uh_dport;               /* destination port */
  52         short   uh_ulen;                /* udp length */
  53         u_short uh_sum;                 /* udp checksum */
  54 };
  55
  56 struct  udpiphdr {
  57         struct  ipovly ui_i;            /* overlaid ip structure */
  58         struct  udphdr ui_u;            /* udp header */
  59 };
  60 #define ui_next         ui_i.ih_next
  61 #define ui_prev         ui_i.ih_prev
  62 #define ui_x1           ui_i.ih_x1
  63 #define ui_pr           ui_i.ih_pr
  64 #define ui_len          ui_i.ih_len
  65 #define ui_src          ui_i.ih_src
  66 #define ui_dst          ui_i.ih_dst
  67 #define ui_sport        ui_u.uh_sport
  68 #define ui_dport        ui_u.uh_dport
  69 #define ui_ulen         ui_u.uh_ulen
  70 #define ui_sum          ui_u.uh_sum
  71
  72 struct ip {
  73         union {
  74                 u_long ip_w;
  75                 struct {
  76                         unsigned int
  77 #if _BIG_ENDIAN == __LITTLE_ENDIAN__
  78                         ip_xhl:4,       /* header length */
  79                         ip_xv:4,                /* version */
  80                         ip_xtos:8,      /* type of service */
  81                         ip_xlen:16;     /* total length */
  82 #endif
  83 #if _BIG_ENDIAN == __BIG_ENDIAN__
  84                         ip_xv:4,                 /* version */
  85                         ip_xhl:4,                /* header length */
  86                         ip_xtos:8,               /* type of service */
  87                         ip_xlen:16;               /* total length */
  88 #endif
  89                 } ip_x;
  90         } ip_vhltl;
  91         u_short ip_id;                  /* identification */
  92         short   ip_off;                 /* fragment offset field */
  93 #define IP_DF 0x4000                    /* dont fragment flag */
  94 #define IP_MF 0x2000                    /* more fragments flag */
  95 #define IP_OFFMASK 0x1fff               /* mask for fragmenting bits */
  96         u_char  ip_ttl;                 /* time to live */
  97         u_char  ip_p;                   /* protocol */
  98         u_short ip_sum;                 /* checksum */
  99         struct  in_addr ip_src,ip_dst;  /* source and dest address */
 100 };
 101 #define ip_v   ip_vhltl.ip_x.ip_xv
 102 #define ip_hl  ip_vhltl.ip_x.ip_xhl
 103 #define ip_tos ip_vhltl.ip_x.ip_xtos
 104 #define ip_len ip_vhltl.ip_x.ip_xlen
 105
 106 #define    IPPROTO_UDP     17
 107 #define    IPVERSION       4
 108
 109 struct  ether_header {
 110         u_char  ether_dhost[6];
 111         u_char  ether_shost[6];
 112         u_short ether_type;
 113 };
 114
 115 typedef struct ether_header ether_header_t;
 116
 117 #define ETHERTYPE_IP       0x0800  /* IP protocol */
 118
 119 #define ntohs(x)           OSSwapBigToHostInt16(x)
 120 #define htons(x)           OSSwapHostToBigInt16(x)