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1/*
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
d7e50217 6 * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
1c79356b 7 *
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8 * This file contains Original Code and/or Modifications of Original Code
9 * as defined in and that are subject to the Apple Public Source License
10 * Version 2.0 (the 'License'). You may not use this file except in
11 * compliance with the License. Please obtain a copy of the License at
12 * http://www.opensource.apple.com/apsl/ and read it before using this
13 * file.
14 *
15 * The Original Code and all software distributed under the License are
16 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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17 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
18 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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19 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
20 * Please see the License for the specific language governing rights and
21 * limitations under the License.
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22 *
23 * @APPLE_LICENSE_HEADER_END@
24 */
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25/*
26 * Copyright (c) 1982, 1986, 1993
27 * The Regents of the University of California. All rights reserved.
28 */
1c79356b 29
9bccf70c 30#include <libsa/types.h>
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31#include <libkern/OSByteOrder.h> /* OSSwap functions */
32
33#define ETHERMTU 1500
34#define ETHERHDRSIZE 14
35#define ETHERCRC 4
36#define KDP_MAXPACKET (ETHERHDRSIZE + ETHERMTU + ETHERCRC)
37
38struct in_addr {
39 u_long s_addr;
40};
41
42struct ether_addr {
43 u_char ether_addr_octet[6];
44};
45
46typedef struct ether_addr enet_addr_t;
47
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48extern struct ether_addr kdp_get_mac_addr(void);
49unsigned int kdp_get_ip_address(void);
50
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51struct ipovly {
52 caddr_t ih_next, ih_prev; /* for protocol sequence q's */
53 u_char ih_x1; /* (unused) */
54 u_char ih_pr; /* protocol */
55 short ih_len; /* protocol length */
56 struct in_addr ih_src; /* source internet address */
57 struct in_addr ih_dst; /* destination internet address */
58};
59
60struct udphdr {
61 u_short uh_sport; /* source port */
62 u_short uh_dport; /* destination port */
63 short uh_ulen; /* udp length */
64 u_short uh_sum; /* udp checksum */
65};
66
67struct udpiphdr {
68 struct ipovly ui_i; /* overlaid ip structure */
69 struct udphdr ui_u; /* udp header */
70};
71#define ui_next ui_i.ih_next
72#define ui_prev ui_i.ih_prev
73#define ui_x1 ui_i.ih_x1
74#define ui_pr ui_i.ih_pr
75#define ui_len ui_i.ih_len
76#define ui_src ui_i.ih_src
77#define ui_dst ui_i.ih_dst
78#define ui_sport ui_u.uh_sport
79#define ui_dport ui_u.uh_dport
80#define ui_ulen ui_u.uh_ulen
81#define ui_sum ui_u.uh_sum
82
83struct ip {
84 union {
85 u_long ip_w;
86 struct {
87 unsigned int
88#if _BIG_ENDIAN == __LITTLE_ENDIAN__
89 ip_xhl:4, /* header length */
90 ip_xv:4, /* version */
91 ip_xtos:8, /* type of service */
92 ip_xlen:16; /* total length */
93#endif
94#if _BIG_ENDIAN == __BIG_ENDIAN__
95 ip_xv:4, /* version */
96 ip_xhl:4, /* header length */
97 ip_xtos:8, /* type of service */
98 ip_xlen:16; /* total length */
99#endif
100 } ip_x;
101 } ip_vhltl;
102 u_short ip_id; /* identification */
103 short ip_off; /* fragment offset field */
104#define IP_DF 0x4000 /* dont fragment flag */
105#define IP_MF 0x2000 /* more fragments flag */
106#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
107 u_char ip_ttl; /* time to live */
108 u_char ip_p; /* protocol */
109 u_short ip_sum; /* checksum */
110 struct in_addr ip_src,ip_dst; /* source and dest address */
111};
112#define ip_v ip_vhltl.ip_x.ip_xv
113#define ip_hl ip_vhltl.ip_x.ip_xhl
114#define ip_tos ip_vhltl.ip_x.ip_xtos
115#define ip_len ip_vhltl.ip_x.ip_xlen
116
117#define IPPROTO_UDP 17
118#define IPVERSION 4
119
120struct ether_header {
121 u_char ether_dhost[6];
122 u_char ether_shost[6];
123 u_short ether_type;
124};
125
126typedef struct ether_header ether_header_t;
127
128#define ETHERTYPE_IP 0x0800 /* IP protocol */
129
130#define ntohs(x) OSSwapBigToHostInt16(x)
131#define htons(x) OSSwapHostToBigInt16(x)
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132
133/*
134 * Ethernet Address Resolution Protocol.
135 *
136 * See RFC 826 for protocol description. Structure below is adapted
137 * to resolving internet addresses. Field names used correspond to
138 * RFC 826.
139 */
140
141#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */
142
143struct arphdr {
144 u_short ar_hrd; /* format of hardware address */
145#define ARPHRD_ETHER 1 /* ethernet hardware format */
146#define ARPHRD_FRELAY 15 /* frame relay hardware format */
147 u_short ar_pro; /* format of protocol address */
148 u_char ar_hln; /* length of hardware address */
149 u_char ar_pln; /* length of protocol address */
150 u_short ar_op; /* one of: */
151#define ARPOP_REQUEST 1 /* request to resolve address */
152#define ARPOP_REPLY 2 /* response to previous request */
153#define ARPOP_REVREQUEST 3 /* request protocol address given hardware */
154#define ARPOP_REVREPLY 4 /* response giving protocol address */
155#define ARPOP_INVREQUEST 8 /* request to identify peer */
156#define ARPOP_INVREPLY 9 /* response identifying peer */
157};
158
159#define ETHER_ADDR_LEN 6
160
161struct ether_arp {
162 struct arphdr ea_hdr; /* fixed-size header */
163 u_char arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */
164 u_char arp_spa[4]; /* sender protocol address */
165 u_char arp_tha[ETHER_ADDR_LEN]; /* target hardware address */
166 u_char arp_tpa[4]; /* target protocol address */
167};
168#define arp_hrd ea_hdr.ar_hrd
169#define arp_pro ea_hdr.ar_pro
170#define arp_hln ea_hdr.ar_hln
171#define arp_pln ea_hdr.ar_pln
172#define arp_op ea_hdr.ar_op