OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [net/] [bsd_tcpip/] [v2_0/] [include/] [netinet/] [ip.h] - Blame information for rev 174

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 27 unneback
//==========================================================================
2
//
3
//      include/netinet/ip.h
4
//
5
//==========================================================================
6
//####BSDCOPYRIGHTBEGIN####
7
//
8
// -------------------------------------------
9
//
10
// Portions of this software may have been derived from OpenBSD, 
11
// FreeBSD or other sources, and are covered by the appropriate
12
// copyright disclaimers included herein.
13
//
14
// Portions created by Red Hat are
15
// Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
16
//
17
// -------------------------------------------
18
//
19
//####BSDCOPYRIGHTEND####
20
//==========================================================================
21
 
22
/*
23
 * Copyright (c) 1982, 1986, 1993
24
 *      The Regents of the University of California.  All rights reserved.
25
 *
26
 * Redistribution and use in source and binary forms, with or without
27
 * modification, are permitted provided that the following conditions
28
 * are met:
29
 * 1. Redistributions of source code must retain the above copyright
30
 *    notice, this list of conditions and the following disclaimer.
31
 * 2. Redistributions in binary form must reproduce the above copyright
32
 *    notice, this list of conditions and the following disclaimer in the
33
 *    documentation and/or other materials provided with the distribution.
34
 * 3. All advertising materials mentioning features or use of this software
35
 *    must display the following acknowledgement:
36
 *      This product includes software developed by the University of
37
 *      California, Berkeley and its contributors.
38
 * 4. Neither the name of the University nor the names of its contributors
39
 *    may be used to endorse or promote products derived from this software
40
 *    without specific prior written permission.
41
 *
42
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
43
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
44
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
46
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52
 * SUCH DAMAGE.
53
 *
54
 *      @(#)ip.h        8.2 (Berkeley) 6/1/94
55
 * $FreeBSD: src/sys/netinet/ip.h,v 1.17 1999/12/22 19:13:20 shin Exp $
56
 */
57
 
58
#ifndef _NETINET_IP_H_
59
#define _NETINET_IP_H_
60
 
61
#include <netinet/in_systm.h>
62
 
63
/*
64
 * Definitions for internet protocol version 4.
65
 * Per RFC 791, September 1981.
66
 */
67
#define IPVERSION       4
68
 
69
/*
70
 * Structure of an internet header, naked of options.
71
 */
72
struct ip {
73
#ifdef _IP_VHL
74
        u_char  ip_vhl;                 /* version << 4 | header length >> 2 */
75
#else
76
#if BYTE_ORDER == LITTLE_ENDIAN
77
        u_int   ip_hl:4,                /* header length */
78
                ip_v:4;                 /* version */
79
#endif
80
#if BYTE_ORDER == BIG_ENDIAN
81
        u_int   ip_v:4,                 /* version */
82
                ip_hl:4;                /* header length */
83
#endif
84
#endif /* not _IP_VHL */
85
        u_char  ip_tos;                 /* type of service */
86
        u_short ip_len;                 /* total length */
87
        u_short ip_id;                  /* identification */
88
        u_short ip_off;                 /* fragment offset field */
89
#define IP_RF 0x8000                    /* reserved fragment flag */
90
#define IP_DF 0x4000                    /* dont fragment flag */
91
#define IP_MF 0x2000                    /* more fragments flag */
92
#define IP_OFFMASK 0x1fff               /* mask for fragmenting bits */
93
        u_char  ip_ttl;                 /* time to live */
94
        u_char  ip_p;                   /* protocol */
95
        u_short ip_sum;                 /* checksum */
96
        struct  in_addr ip_src,ip_dst;  /* source and dest address */
97
} __attribute__ ((aligned(1), packed));
98
 
99
#ifdef _IP_VHL
100
#define IP_MAKE_VHL(v, hl)      ((v) << 4 | (hl))
101
#define IP_VHL_HL(vhl)          ((vhl) & 0x0f)
102
#define IP_VHL_V(vhl)           ((vhl) >> 4)
103
#define IP_VHL_BORING           0x45
104
#endif
105
 
106
#define IP_MAXPACKET    65535           /* maximum packet size */
107
 
108
/*
109
 * Definitions for IP type of service (ip_tos)
110
 */
111
#define IPTOS_LOWDELAY          0x10
112
#define IPTOS_THROUGHPUT        0x08
113
#define IPTOS_RELIABILITY       0x04
114
#define IPTOS_MINCOST           0x02
115
/* ECN bits proposed by Sally Floyd */
116
#define IPTOS_CE                0x01    /* congestion experienced */
117
#define IPTOS_ECT               0x02    /* ECN-capable transport */
118
 
119
 
120
/*
121
 * Definitions for IP precedence (also in ip_tos) (hopefully unused)
122
 */
123
#define IPTOS_PREC_NETCONTROL           0xe0
124
#define IPTOS_PREC_INTERNETCONTROL      0xc0
125
#define IPTOS_PREC_CRITIC_ECP           0xa0
126
#define IPTOS_PREC_FLASHOVERRIDE        0x80
127
#define IPTOS_PREC_FLASH                0x60
128
#define IPTOS_PREC_IMMEDIATE            0x40
129
#define IPTOS_PREC_PRIORITY             0x20
130
#define IPTOS_PREC_ROUTINE              0x00
131
 
132
/*
133
 * Definitions for options.
134
 */
135
#define IPOPT_COPIED(o)         ((o)&0x80)
136
#define IPOPT_CLASS(o)          ((o)&0x60)
137
#define IPOPT_NUMBER(o)         ((o)&0x1f)
138
 
139
#define IPOPT_CONTROL           0x00
140
#define IPOPT_RESERVED1         0x20
141
#define IPOPT_DEBMEAS           0x40
142
#define IPOPT_RESERVED2         0x60
143
 
144
#define IPOPT_EOL               0                /* end of option list */
145
#define IPOPT_NOP               1               /* no operation */
146
 
147
#define IPOPT_RR                7               /* record packet route */
148
#define IPOPT_TS                68              /* timestamp */
149
#define IPOPT_SECURITY          130             /* provide s,c,h,tcc */
150
#define IPOPT_LSRR              131             /* loose source route */
151
#define IPOPT_SATID             136             /* satnet id */
152
#define IPOPT_SSRR              137             /* strict source route */
153
#define IPOPT_RA                148             /* router alert */
154
 
155
/*
156
 * Offsets to fields in options other than EOL and NOP.
157
 */
158
#define IPOPT_OPTVAL            0                /* option ID */
159
#define IPOPT_OLEN              1               /* option length */
160
#define IPOPT_OFFSET            2               /* offset within option */
161
#define IPOPT_MINOFF            4               /* min value of above */
162
 
163
/*
164
 * Time stamp option structure.
165
 */
166
struct  ip_timestamp {
167
        u_char  ipt_code;               /* IPOPT_TS */
168
        u_char  ipt_len;                /* size of structure (variable) */
169
        u_char  ipt_ptr;                /* index of current entry */
170
#if BYTE_ORDER == LITTLE_ENDIAN
171
        u_int   ipt_flg:4,              /* flags, see below */
172
                ipt_oflw:4;             /* overflow counter */
173
#endif
174
#if BYTE_ORDER == BIG_ENDIAN
175
        u_int   ipt_oflw:4,             /* overflow counter */
176
                ipt_flg:4;              /* flags, see below */
177
#endif
178
        union ipt_timestamp {
179
                n_long  ipt_time[1];
180
                struct  ipt_ta {
181
                        struct in_addr ipt_addr;
182
                        n_long ipt_time;
183
                } ipt_ta[1];
184
        } ipt_timestamp;
185
} __attribute__ ((aligned(1), packed));
186
 
187
/* flag bits for ipt_flg */
188
#define IPOPT_TS_TSONLY         0                /* timestamps only */
189
#define IPOPT_TS_TSANDADDR      1               /* timestamps and addresses */
190
#define IPOPT_TS_PRESPEC        3               /* specified modules only */
191
 
192
/* bits for security (not byte swapped) */
193
#define IPOPT_SECUR_UNCLASS     0x0000
194
#define IPOPT_SECUR_CONFID      0xf135
195
#define IPOPT_SECUR_EFTO        0x789a
196
#define IPOPT_SECUR_MMMM        0xbc4d
197
#define IPOPT_SECUR_RESTR       0xaf13
198
#define IPOPT_SECUR_SECRET      0xd788
199
#define IPOPT_SECUR_TOPSECRET   0x6bc5
200
 
201
/*
202
 * Internet implementation parameters.
203
 */
204
#define MAXTTL          255             /* maximum time to live (seconds) */
205
#define IPDEFTTL        64              /* default ttl, from RFC 1340 */
206
#define IPFRAGTTL       60              /* time to live for frags, slowhz */
207
#define IPTTLDEC        1               /* subtracted when forwarding */
208
 
209
#define IP_MSS          576             /* default maximum segment size */
210
 
211
#endif

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.