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1.1 root 1: /*
2: * Copyright (c) 1982, 1986 Regents of the University of California.
3: * 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. All advertising materials mentioning features or use of this software
14: * must display the following acknowledgement:
15: * This product includes software developed by the University of
16: * California, Berkeley and its contributors.
17: * 4. Neither the name of the University nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
1.1.1.2 ! root 33: * from: @(#)ip.h 7.10 (Berkeley) 6/28/90
! 34: * ip.h,v 1.3 1993/05/20 03:50:15 cgd Exp
1.1 root 35: */
36:
1.1.1.2 ! root 37: #ifndef _NETINET_IP_H_
! 38: #define _NETINET_IP_H_
! 39:
1.1 root 40: /*
41: * Definitions for internet protocol version 4.
42: * Per RFC 791, September 1981.
43: */
44: #define IPVERSION 4
45:
46: /*
47: * Structure of an internet header, naked of options.
48: *
49: * We declare ip_len and ip_off to be short, rather than u_short
50: * pragmatically since otherwise unsigned comparisons can result
51: * against negative integers quite easily, and fail in subtle ways.
52: */
53: struct ip {
54: #if BYTE_ORDER == LITTLE_ENDIAN
55: u_char ip_hl:4, /* header length */
56: ip_v:4; /* version */
57: #endif
58: #if BYTE_ORDER == BIG_ENDIAN
59: u_char ip_v:4, /* version */
60: ip_hl:4; /* header length */
61: #endif
62: u_char ip_tos; /* type of service */
63: short ip_len; /* total length */
64: u_short ip_id; /* identification */
65: short ip_off; /* fragment offset field */
66: #define IP_DF 0x4000 /* dont fragment flag */
67: #define IP_MF 0x2000 /* more fragments flag */
68: u_char ip_ttl; /* time to live */
69: u_char ip_p; /* protocol */
70: u_short ip_sum; /* checksum */
71: struct in_addr ip_src,ip_dst; /* source and dest address */
72: };
73:
74: #define IP_MAXPACKET 65535 /* maximum packet size */
75:
76: /*
77: * Definitions for IP type of service (ip_tos)
78: */
79: #define IPTOS_LOWDELAY 0x10
80: #define IPTOS_THROUGHPUT 0x08
81: #define IPTOS_RELIABILITY 0x04
82:
83: /*
84: * Definitions for IP precedence (also in ip_tos) (hopefully unused)
85: */
86: #define IPTOS_PREC_NETCONTROL 0xe0
87: #define IPTOS_PREC_INTERNETCONTROL 0xc0
88: #define IPTOS_PREC_CRITIC_ECP 0xa0
89: #define IPTOS_PREC_FLASHOVERRIDE 0x80
90: #define IPTOS_PREC_FLASH 0x60
91: #define IPTOS_PREC_IMMEDIATE 0x40
92: #define IPTOS_PREC_PRIORITY 0x20
93: #define IPTOS_PREC_ROUTINE 0x10
94:
95: /*
96: * Definitions for options.
97: */
98: #define IPOPT_COPIED(o) ((o)&0x80)
99: #define IPOPT_CLASS(o) ((o)&0x60)
100: #define IPOPT_NUMBER(o) ((o)&0x1f)
101:
102: #define IPOPT_CONTROL 0x00
103: #define IPOPT_RESERVED1 0x20
104: #define IPOPT_DEBMEAS 0x40
105: #define IPOPT_RESERVED2 0x60
106:
107: #define IPOPT_EOL 0 /* end of option list */
108: #define IPOPT_NOP 1 /* no operation */
109:
110: #define IPOPT_RR 7 /* record packet route */
111: #define IPOPT_TS 68 /* timestamp */
112: #define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
113: #define IPOPT_LSRR 131 /* loose source route */
114: #define IPOPT_SATID 136 /* satnet id */
115: #define IPOPT_SSRR 137 /* strict source route */
116:
117: /*
118: * Offsets to fields in options other than EOL and NOP.
119: */
120: #define IPOPT_OPTVAL 0 /* option ID */
121: #define IPOPT_OLEN 1 /* option length */
122: #define IPOPT_OFFSET 2 /* offset within option */
123: #define IPOPT_MINOFF 4 /* min value of above */
124:
125: /*
126: * Time stamp option structure.
127: */
128: struct ip_timestamp {
129: u_char ipt_code; /* IPOPT_TS */
130: u_char ipt_len; /* size of structure (variable) */
131: u_char ipt_ptr; /* index of current entry */
132: #if BYTE_ORDER == LITTLE_ENDIAN
133: u_char ipt_flg:4, /* flags, see below */
134: ipt_oflw:4; /* overflow counter */
135: #endif
136: #if BYTE_ORDER == BIG_ENDIAN
137: u_char ipt_oflw:4, /* overflow counter */
138: ipt_flg:4; /* flags, see below */
139: #endif
140: union ipt_timestamp {
141: n_long ipt_time[1];
142: struct ipt_ta {
143: struct in_addr ipt_addr;
144: n_long ipt_time;
145: } ipt_ta[1];
146: } ipt_timestamp;
147: };
148:
149: /* flag bits for ipt_flg */
150: #define IPOPT_TS_TSONLY 0 /* timestamps only */
151: #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
152: #define IPOPT_TS_PRESPEC 3 /* specified modules only */
153:
154: /* bits for security (not byte swapped) */
155: #define IPOPT_SECUR_UNCLASS 0x0000
156: #define IPOPT_SECUR_CONFID 0xf135
157: #define IPOPT_SECUR_EFTO 0x789a
158: #define IPOPT_SECUR_MMMM 0xbc4d
159: #define IPOPT_SECUR_RESTR 0xaf13
160: #define IPOPT_SECUR_SECRET 0xd788
161: #define IPOPT_SECUR_TOPSECRET 0x6bc5
162:
163: /*
164: * Internet implementation parameters.
165: */
166: #define MAXTTL 255 /* maximum time to live (seconds) */
167: #define IPFRAGTTL 60 /* time to live for frags, slowhz */
168: #define IPTTLDEC 1 /* subtracted when forwarding */
169:
170: #define IP_MSS 576 /* default maximum segment size */
1.1.1.2 ! root 171:
! 172: #endif /* !_NETINET_IP_H_ */
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