ReactOS  0.4.15-dev-1070-ge1a01de
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 
48 typedef u_short n_short;
49 typedef u_int n_long;
50 typedef 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  */
60 struct 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  */
161 struct ip_timestamp {
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
unsigned int ip_v
Definition: dhcpd.h:64
union ip_timestamp::ipt_timestamp ipt_timestamp
struct in_addr ip_src ip_dst
Definition: dhcpd.h:76
u_char ip_tos
Definition: ip.h:84
unsigned int ip_hl
Definition: dhcpd.h:63
n_long ipt_time[1]
Definition: ip.h:185
Definition: dhcpd.h:61
Definition: tcpip.h:125
u_char ip_ttl
Definition: ip.h:92
unsigned short u_short
Definition: types.h:81
u_short ip_len
Definition: dhcpd.h:66
u_char ipt_len
Definition: ip.h:163
u_int ipt_flg
Definition: ip.h:176
UINT32 u_int
Definition: types.h:82
u_char ipt_code
Definition: ip.h:162
u_short ip_id
Definition: dhcpd.h:67
u_short ip_off
Definition: dhcpd.h:68
u_int ipt_oflw
Definition: ip.h:176
u_short ip_sum
Definition: dhcpd.h:75
u_char ip_p
Definition: ip.h:93
UCHAR u_char
Definition: types.h:80
u_char ipt_ptr
Definition: ip.h:164