ReactOS 0.4.15-dev-8145-ga541a46
ip.h
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1/*
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)ip.h 8.2 (Berkeley) 6/1/94
30 * $FreeBSD: src/sys/netinet/ip.h,v 1.16 1999/08/28 00:49:19 peter Exp $
31 */
32
33#ifndef _NETINET_IP_H_
34#define _NETINET_IP_H_
35
36/*
37 * Definitions for internet protocol version 4.
38 * Per RFC 791, September 1981.
39 */
40#define IPVERSION 4
41
42/* A little magic to make the Windows build happy. */
43#if defined(_MSC_VER) || defined(__MINGW32__)
44#include <winsock2.h>
45#include <ws2tcpip.h>
46#include <time.h>
47
48typedef u_short n_short;
49typedef u_int n_long;
50typedef u_int n_time;
51
52#define EMSGSIZE WSAEMSGSIZE
53#define ENETUNREACH WSAENETUNREACH
54#define EHOSTUNREACH WSAEHOSTUNREACH
55#endif
56
57/*
58 * Structure of an internet header, naked of options.
59 */
60struct ip {
61#ifdef _IP_VHL
62 u_char ip_vhl; /* version << 4 | header length >> 2 */
63#else
64#ifdef __REACTOS__
65#if BYTE_ORDER == LITTLE_ENDIAN
66 u_char ip_hl : 4, /* header length */
67 ip_v : 4; /* version */
68#endif
69#if BYTE_ORDER == BIG_ENDIAN
70 u_char ip_v : 4, /* version */
71 ip_hl : 4; /* header length */
72#endif
73#else
74#if BYTE_ORDER == LITTLE_ENDIAN
75 u_int ip_hl:4, /* header length */
76 ip_v:4; /* version */
77#endif
78#if BYTE_ORDER == BIG_ENDIAN
79 u_int ip_v:4, /* version */
80 ip_hl:4; /* header length */
81#endif
82#endif /* __REACTOS__ */
83#endif /* not _IP_VHL */
84 u_char ip_tos; /* type of service */
85 u_short ip_len; /* total length */
86 u_short ip_id; /* identification */
87 u_short ip_off; /* fragment offset field */
88#define IP_RF 0x8000 /* reserved fragment flag */
89#define IP_DF 0x4000 /* don't fragment flag */
90#define IP_MF 0x2000 /* more fragments flag */
91#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
92 u_char ip_ttl; /* time to live */
93 u_char ip_p; /* protocol */
94 u_short ip_sum; /* checksum */
95 struct in_addr ip_src,ip_dst; /* source and dest address */
96};
97
98#ifdef _IP_VHL
99#define IP_MAKE_VHL(v, hl) ((v) << 4 | (hl))
100#define IP_VHL_HL(vhl) ((vhl) & 0x0f)
101#define IP_VHL_V(vhl) ((vhl) >> 4)
102#define IP_VHL_BORING 0x45
103#endif
104
105#define IP_MAXPACKET 65535 /* maximum packet size */
106
107/*
108 * Definitions for IP type of service (ip_tos)
109 */
110#define IPTOS_LOWDELAY 0x10
111#define IPTOS_THROUGHPUT 0x08
112#define IPTOS_RELIABILITY 0x04
113#define IPTOS_MINCOST 0x02
114
115/*
116 * Definitions for IP precedence (also in ip_tos) (hopefully unused)
117 */
118#define IPTOS_PREC_NETCONTROL 0xe0
119#define IPTOS_PREC_INTERNETCONTROL 0xc0
120#define IPTOS_PREC_CRITIC_ECP 0xa0
121#define IPTOS_PREC_FLASHOVERRIDE 0x80
122#define IPTOS_PREC_FLASH 0x60
123#define IPTOS_PREC_IMMEDIATE 0x40
124#define IPTOS_PREC_PRIORITY 0x20
125#define IPTOS_PREC_ROUTINE 0x00
126
127/*
128 * Definitions for options.
129 */
130#define IPOPT_COPIED(o) ((o)&0x80)
131#define IPOPT_CLASS(o) ((o)&0x60)
132#define IPOPT_NUMBER(o) ((o)&0x1f)
133
134#define IPOPT_CONTROL 0x00
135#define IPOPT_RESERVED1 0x20
136#define IPOPT_DEBMEAS 0x40
137#define IPOPT_RESERVED2 0x60
138
139#define IPOPT_EOL 0 /* end of option list */
140#define IPOPT_NOP 1 /* no operation */
141
142#define IPOPT_RR 7 /* record packet route */
143#define IPOPT_TS 68 /* timestamp */
144#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
145#define IPOPT_LSRR 131 /* loose source route */
146#define IPOPT_SATID 136 /* satnet id */
147#define IPOPT_SSRR 137 /* strict source route */
148#define IPOPT_RA 148 /* router alert */
149
150/*
151 * Offsets to fields in options other than EOL and NOP.
152 */
153#define IPOPT_OPTVAL 0 /* option ID */
154#define IPOPT_OLEN 1 /* option length */
155#define IPOPT_OFFSET 2 /* offset within option */
156#define IPOPT_MINOFF 4 /* min value of above */
157
158/*
159 * Time stamp option structure.
160 */
162 u_char ipt_code; /* IPOPT_TS */
163 u_char ipt_len; /* size of structure (variable) */
164 u_char ipt_ptr; /* index of current entry */
165#ifdef __REACTOS__
166#if BYTE_ORDER == LITTLE_ENDIAN
167 u_char ipt_flg:4, /* flags, see below */
168 ipt_oflw:4; /* overflow counter */
169#endif
170#if BYTE_ORDER == BIG_ENDIAN
171 u_char ipt_oflw:4, /* overflow counter */
172 ipt_flg:4; /* flags, see below */
173#endif
174#else
175#if BYTE_ORDER == LITTLE_ENDIAN
176 u_int ipt_flg:4, /* flags, see below */
177 ipt_oflw:4; /* overflow counter */
178#endif
179#if BYTE_ORDER == BIG_ENDIAN
180 u_int ipt_oflw:4, /* overflow counter */
181 ipt_flg:4; /* flags, see below */
182#endif
183#endif /* __REACTOS__ */
185 n_long ipt_time[1];
186 struct ipt_ta {
188 n_long ipt_time;
189 } ipt_ta[1];
190 } ipt_timestamp;
191};
192
193/* flag bits for ipt_flg */
194#define IPOPT_TS_TSONLY 0 /* timestamps only */
195#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
196#define IPOPT_TS_PRESPEC 3 /* specified modules only */
197
198/* bits for security (not byte swapped) */
199#define IPOPT_SECUR_UNCLASS 0x0000
200#define IPOPT_SECUR_CONFID 0xf135
201#define IPOPT_SECUR_EFTO 0x789a
202#define IPOPT_SECUR_MMMM 0xbc4d
203#define IPOPT_SECUR_RESTR 0xaf13
204#define IPOPT_SECUR_SECRET 0xd788
205#define IPOPT_SECUR_TOPSECRET 0x6bc5
206
207/*
208 * Internet implementation parameters.
209 */
210#define MAXTTL 255 /* maximum time to live (seconds) */
211#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
212#define IPFRAGTTL 60 /* time to live for frags, slowhz */
213#define IPTTLDEC 1 /* subtracted when forwarding */
214
215#define IP_MSS 576 /* default maximum segment size */
216
217#endif
UINT32 u_int
Definition: types.h:82
unsigned short u_short
Definition: types.h:81
UCHAR u_char
Definition: types.h:80
Definition: tcpip.h:126
u_int ipt_flg
Definition: ip.h:176
u_char ipt_ptr
Definition: ip.h:164
u_int ipt_oflw
Definition: ip.h:177
u_char ipt_len
Definition: ip.h:163
u_char ipt_code
Definition: ip.h:162
Definition: dhcpd.h:62
u_char ip_p
Definition: ip.h:93
u_short ip_id
Definition: dhcpd.h:67
unsigned int ip_v
Definition: dhcpd.h:64
struct in_addr ip_src ip_dst
Definition: dhcpd.h:76
u_char ip_tos
Definition: ip.h:84
u_short ip_sum
Definition: dhcpd.h:75
u_short ip_len
Definition: dhcpd.h:66
unsigned int ip_hl
Definition: dhcpd.h:63
u_char ip_ttl
Definition: ip.h:92
u_short ip_off
Definition: dhcpd.h:68
n_long ipt_time[1]
Definition: ip.h:185