osfmk/kdp/kdp_udp.h

   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 #include <stdint.h>
  36
  37 #define     ETHERMTU        1500
  38 #define     ETHERHDRSIZE    14
  39 #define     ETHERCRC        4
  40 #define     KDP_MAXPACKET   (ETHERHDRSIZE + ETHERMTU + ETHERCRC)
  41
  42 struct in_addr {
  43         uint32_t s_addr;
  44 };
  45
  46 struct ether_addr {
  47         u_char ether_addr_octet[6];
  48 };
  49
  50 typedef struct ether_addr enet_addr_t;
  51
  52 extern struct ether_addr kdp_get_mac_addr(void);
  53 unsigned int  kdp_get_ip_address(void);
  54
  55 struct ipovly {
  56         uint32_t ih_next, ih_prev;       /* for protocol sequence q's */
  57         u_char  ih_x1;                  /* (unused) */
  58         u_char  ih_pr;                  /* protocol */
  59         short   ih_len;                 /* protocol length */
  60         struct  in_addr ih_src;         /* source internet address */
  61         struct  in_addr ih_dst;         /* destination internet address */
  62 };
  63
  64 struct udphdr {
  65         u_short uh_sport;               /* source port */
  66         u_short uh_dport;               /* destination port */
  67         short   uh_ulen;                /* udp length */
  68         u_short uh_sum;                 /* udp checksum */
  69 };
  70
  71 struct  udpiphdr {
  72         struct  ipovly ui_i;            /* overlaid ip structure */
  73         struct  udphdr ui_u;            /* udp header */
  74 };
  75 #define ui_next         ui_i.ih_next
  76 #define ui_prev         ui_i.ih_prev
  77 #define ui_x1           ui_i.ih_x1
  78 #define ui_pr           ui_i.ih_pr
  79 #define ui_len          ui_i.ih_len
  80 #define ui_src          ui_i.ih_src
  81 #define ui_dst          ui_i.ih_dst
  82 #define ui_sport        ui_u.uh_sport
  83 #define ui_dport        ui_u.uh_dport
  84 #define ui_ulen         ui_u.uh_ulen
  85 #define ui_sum          ui_u.uh_sum
  86
  87 struct ip {
  88         union {
  89                 uint32_t ip_w;
  90                 struct {
  91                         unsigned int
  92 #ifdef __LITTLE_ENDIAN__
  93                         ip_xhl:4,       /* header length */
  94                         ip_xv:4,                /* version */
  95                         ip_xtos:8,      /* type of service */
  96                         ip_xlen:16;     /* total length */
  97 #endif
  98 #ifdef __BIG_ENDIAN__
  99                         ip_xv:4,                 /* version */
 100                         ip_xhl:4,                /* header length */
 101                         ip_xtos:8,               /* type of service */
 102                         ip_xlen:16;               /* total length */
 103 #endif
 104                 } ip_x;
 105         } ip_vhltl;
 106         u_short ip_id;                  /* identification */
 107         short   ip_off;                 /* fragment offset field */
 108 #define IP_DF 0x4000                    /* dont fragment flag */
 109 #define IP_MF 0x2000                    /* more fragments flag */
 110 #define IP_OFFMASK 0x1fff               /* mask for fragmenting bits */
 111         u_char  ip_ttl;                 /* time to live */
 112         u_char  ip_p;                   /* protocol */
 113         u_short ip_sum;                 /* checksum */
 114         struct  in_addr ip_src,ip_dst;  /* source and dest address */
 115 };
 116 #define ip_v   ip_vhltl.ip_x.ip_xv
 117 #define ip_hl  ip_vhltl.ip_x.ip_xhl
 118 #define ip_tos ip_vhltl.ip_x.ip_xtos
 119 #define ip_len ip_vhltl.ip_x.ip_xlen
 120
 121 #define    IPPROTO_UDP     17
 122 #define    IPVERSION       4
 123
 124 struct  ether_header {
 125         u_char  ether_dhost[6];
 126         u_char  ether_shost[6];
 127         u_short ether_type;
 128 };
 129
 130 typedef struct ether_header ether_header_t;
 131
 132 #define ETHERTYPE_IP       0x0800  /* IP protocol */
 133
 134 #define ntohs(x)           OSSwapBigToHostInt16(x)
 135 #define ntohl(x)           OSSwapBigToHostInt32(x)
 136 #define htons(x)           OSSwapHostToBigInt16(x)
 137 #define htonl(x)           OSSwapHostToBigInt32(x)
 138 /*
 139  * Ethernet Address Resolution Protocol.
 140  *
 141  * See RFC 826 for protocol description.  Structure below is adapted
 142  * to resolving internet addresses.  Field names used correspond to
 143  * RFC 826.
 144  */
 145
 146 #define ETHERTYPE_ARP          0x0806  /* Addr. resolution protocol */
 147
 148 struct  arphdr {
 149   u_short ar_hrd;         /* format of hardware address */
 150 #define ARPHRD_ETHER    1       /* ethernet hardware format */
 151 #define ARPHRD_FRELAY   15      /* frame relay hardware format */
 152   u_short ar_pro;         /* format of protocol address */
 153   u_char  ar_hln;         /* length of hardware address */
 154   u_char  ar_pln;         /* length of protocol address */
 155   u_short ar_op;          /* one of: */
 156 #define ARPOP_REQUEST   1       /* request to resolve address */
 157 #define ARPOP_REPLY     2       /* response to previous request */
 158 #define ARPOP_REVREQUEST 3      /* request protocol address given hardware */
 159 #define ARPOP_REVREPLY  4       /* response giving protocol address */
 160 #define ARPOP_INVREQUEST 8      /* request to identify peer */
 161 #define ARPOP_INVREPLY  9       /* response identifying peer */
 162 };
 163
 164 #define ETHER_ADDR_LEN 6
 165
 166 struct  ether_arp {
 167   struct  arphdr ea_hdr;  /* fixed-size header */
 168   u_char  arp_sha[ETHER_ADDR_LEN];        /* sender hardware address */
 169   u_char  arp_spa[4];     /* sender protocol address */
 170   u_char  arp_tha[ETHER_ADDR_LEN];        /* target hardware address */
 171   u_char  arp_tpa[4];     /* target protocol address */
 172 };
 173 #define arp_hrd ea_hdr.ar_hrd
 174 #define arp_pro ea_hdr.ar_pro
 175 #define arp_hln ea_hdr.ar_hln
 176 #define arp_pln ea_hdr.ar_pln
 177 #define arp_op  ea_hdr.ar_op