osfmk/kdp/kdp_udp.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright (c) 1982, 1986, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  */
  27
  28 #include <libsa/types.h>
  29 #include <libkern/OSByteOrder.h>   /* OSSwap functions */
  30
  31 #define     ETHERMTU        1500
  32 #define     ETHERHDRSIZE    14
  33 #define     ETHERCRC        4
  34 #define     KDP_MAXPACKET   (ETHERHDRSIZE + ETHERMTU + ETHERCRC)
  35
  36 struct in_addr {
  37         u_long s_addr;
  38 };
  39
  40 struct ether_addr {
  41         u_char ether_addr_octet[6];
  42 };
  43
  44 typedef struct ether_addr enet_addr_t;
  45
  46 extern struct ether_addr kdp_get_mac_addr(void);
  47 unsigned int  kdp_get_ip_address(void);
  48
  49 struct ipovly {
  50         caddr_t ih_next, ih_prev;       /* for protocol sequence q's */
  51         u_char  ih_x1;                  /* (unused) */
  52         u_char  ih_pr;                  /* protocol */
  53         short   ih_len;                 /* protocol length */
  54         struct  in_addr ih_src;         /* source internet address */
  55         struct  in_addr ih_dst;         /* destination internet address */
  56 };
  57
  58 struct udphdr {
  59         u_short uh_sport;               /* source port */
  60         u_short uh_dport;               /* destination port */
  61         short   uh_ulen;                /* udp length */
  62         u_short uh_sum;                 /* udp checksum */
  63 };
  64
  65 struct  udpiphdr {
  66         struct  ipovly ui_i;            /* overlaid ip structure */
  67         struct  udphdr ui_u;            /* udp header */
  68 };
  69 #define ui_next         ui_i.ih_next
  70 #define ui_prev         ui_i.ih_prev
  71 #define ui_x1           ui_i.ih_x1
  72 #define ui_pr           ui_i.ih_pr
  73 #define ui_len          ui_i.ih_len
  74 #define ui_src          ui_i.ih_src
  75 #define ui_dst          ui_i.ih_dst
  76 #define ui_sport        ui_u.uh_sport
  77 #define ui_dport        ui_u.uh_dport
  78 #define ui_ulen         ui_u.uh_ulen
  79 #define ui_sum          ui_u.uh_sum
  80
  81 struct ip {
  82         union {
  83                 u_long ip_w;
  84                 struct {
  85                         unsigned int
  86 #ifdef __LITTLE_ENDIAN__
  87                         ip_xhl:4,       /* header length */
  88                         ip_xv:4,                /* version */
  89                         ip_xtos:8,      /* type of service */
  90                         ip_xlen:16;     /* total length */
  91 #endif
  92 #ifdef __BIG_ENDIAN__
  93                         ip_xv:4,                 /* version */
  94                         ip_xhl:4,                /* header length */
  95                         ip_xtos:8,               /* type of service */
  96                         ip_xlen:16;               /* total length */
  97 #endif
  98                 } ip_x;
  99         } ip_vhltl;
 100         u_short ip_id;                  /* identification */
 101         short   ip_off;                 /* fragment offset field */
 102 #define IP_DF 0x4000                    /* dont fragment flag */
 103 #define IP_MF 0x2000                    /* more fragments flag */
 104 #define IP_OFFMASK 0x1fff               /* mask for fragmenting bits */
 105         u_char  ip_ttl;                 /* time to live */
 106         u_char  ip_p;                   /* protocol */
 107         u_short ip_sum;                 /* checksum */
 108         struct  in_addr ip_src,ip_dst;  /* source and dest address */
 109 };
 110 #define ip_v   ip_vhltl.ip_x.ip_xv
 111 #define ip_hl  ip_vhltl.ip_x.ip_xhl
 112 #define ip_tos ip_vhltl.ip_x.ip_xtos
 113 #define ip_len ip_vhltl.ip_x.ip_xlen
 114
 115 #define    IPPROTO_UDP     17
 116 #define    IPVERSION       4
 117
 118 struct  ether_header {
 119         u_char  ether_dhost[6];
 120         u_char  ether_shost[6];
 121         u_short ether_type;
 122 };
 123
 124 typedef struct ether_header ether_header_t;
 125
 126 #define ETHERTYPE_IP       0x0800  /* IP protocol */
 127
 128 #define ntohs(x)           OSSwapBigToHostInt16(x)
 129 #define ntohl(x)           OSSwapBigToHostInt32(x)
 130 #define htons(x)           OSSwapHostToBigInt16(x)
 131 #define htonl(x)           OSSwapHostToBigInt32(x)
 132 /*
 133  * Ethernet Address Resolution Protocol.
 134  *
 135  * See RFC 826 for protocol description.  Structure below is adapted
 136  * to resolving internet addresses.  Field names used correspond to
 137  * RFC 826.
 138  */
 139
 140 #define ETHERTYPE_ARP          0x0806  /* Addr. resolution protocol */
 141
 142 struct  arphdr {
 143   u_short ar_hrd;         /* format of hardware address */
 144 #define ARPHRD_ETHER    1       /* ethernet hardware format */
 145 #define ARPHRD_FRELAY   15      /* frame relay hardware format */
 146   u_short ar_pro;         /* format of protocol address */
 147   u_char  ar_hln;         /* length of hardware address */
 148   u_char  ar_pln;         /* length of protocol address */
 149   u_short ar_op;          /* one of: */
 150 #define ARPOP_REQUEST   1       /* request to resolve address */
 151 #define ARPOP_REPLY     2       /* response to previous request */
 152 #define ARPOP_REVREQUEST 3      /* request protocol address given hardware */
 153 #define ARPOP_REVREPLY  4       /* response giving protocol address */
 154 #define ARPOP_INVREQUEST 8      /* request to identify peer */
 155 #define ARPOP_INVREPLY  9       /* response identifying peer */
 156 };
 157
 158 #define ETHER_ADDR_LEN 6
 159
 160 struct  ether_arp {
 161   struct  arphdr ea_hdr;  /* fixed-size header */
 162   u_char  arp_sha[ETHER_ADDR_LEN];        /* sender hardware address */
 163   u_char  arp_spa[4];     /* sender protocol address */
 164   u_char  arp_tha[ETHER_ADDR_LEN];        /* target hardware address */
 165   u_char  arp_tpa[4];     /* target protocol address */
 166 };
 167 #define arp_hrd ea_hdr.ar_hrd
 168 #define arp_pro ea_hdr.ar_pro
 169 #define arp_hln ea_hdr.ar_hln
 170 #define arp_pln ea_hdr.ar_pln
 171 #define arp_op  ea_hdr.ar_op