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source: rtems/cpukit/libnetworking/netinet/in.h @ 74c402a2

4.104.114.84.95

Last change on this file since 74c402a2 was 74c402a2, checked in by Joel Sherrill <joel.sherrill@…>, on 07/17/02 at 17:08:48

2002-07-17 Jay Monkman <jtm@…>

netinet/in.h, netinet/ip.h, netinet/ip_var.h, netinet/tcp.h: Modified to added packed attribute.o

Property mode set to 100644

File size: 16.6 KB

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1	/*
2	* Copyright (c) 1982, 1986, 1990, 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. 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	*
33	* @(#)in.h 8.3 (Berkeley) 1/3/94
34	* $Id$
35	*/
36
37	#ifndef _NETINET_IN_H_
38	#define _NETINET_IN_H_
39
40	/*
41	* Constants and structures defined by the internet system,
42	* Per RFC 790, September 1981, and numerous additions.
43	*/
44
45	/*
46	* Protocols (RFC 1700)
47	*/
48	#define IPPROTO_IP 0 /* dummy for IP */
49	#define IPPROTO_ICMP 1 /* control message protocol */
50	#define IPPROTO_IGMP 2 /* group mgmt protocol */
51	#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */
52	#define IPPROTO_IPIP 4 /* IP encapsulation in IP */
53	#define IPPROTO_TCP 6 /* tcp */
54	#define IPPROTO_ST 7 /* Stream protocol II */
55	#define IPPROTO_EGP 8 /* exterior gateway protocol */
56	#define IPPROTO_PIGP 9 /* private interior gateway */
57	#define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */
58	#define IPPROTO_NVPII 11 /* network voice protocol*/
59	#define IPPROTO_PUP 12 /* pup */
60	#define IPPROTO_ARGUS 13 /* Argus */
61	#define IPPROTO_EMCON 14 /* EMCON */
62	#define IPPROTO_XNET 15 /* Cross Net Debugger */
63	#define IPPROTO_CHAOS 16 /* Chaos*/
64	#define IPPROTO_UDP 17 /* user datagram protocol */
65	#define IPPROTO_MUX 18 /* Multiplexing */
66	#define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */
67	#define IPPROTO_HMP 20 /* Host Monitoring */
68	#define IPPROTO_PRM 21 /* Packet Radio Measurement */
69	#define IPPROTO_IDP 22 /* xns idp */
70	#define IPPROTO_TRUNK1 23 /* Trunk-1 */
71	#define IPPROTO_TRUNK2 24 /* Trunk-2 */
72	#define IPPROTO_LEAF1 25 /* Leaf-1 */
73	#define IPPROTO_LEAF2 26 /* Leaf-2 */
74	#define IPPROTO_RDP 27 /* Reliable Data */
75	#define IPPROTO_IRTP 28 /* Reliable Transaction */
76	#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */
77	#define IPPROTO_BLT 30 /* Bulk Data Transfer */
78	#define IPPROTO_NSP 31 /* Network Services */
79	#define IPPROTO_INP 32 /* Merit Internodal */
80	#define IPPROTO_SEP 33 /* Sequential Exchange */
81	#define IPPROTO_3PC 34 /* Third Party Connect */
82	#define IPPROTO_IDPR 35 /* InterDomain Policy Routing */
83	#define IPPROTO_XTP 36 /* XTP */
84	#define IPPROTO_DDP 37 /* Datagram Delivery */
85	#define IPPROTO_CMTP 38 /* Control Message Transport */
86	#define IPPROTO_TPXX 39 /* TP++ Transport */
87	#define IPPROTO_IL 40 /* IL transport protocol */
88	#define IPPROTO_SIP 41 /* Simple Internet Protocol */
89	#define IPPROTO_SDRP 42 /* Source Demand Routing */
90	#define IPPROTO_SIPSR 43 /* SIP Source Route */
91	#define IPPROTO_SIPFRAG 44 /* SIP Fragment */
92	#define IPPROTO_IDRP 45 /* InterDomain Routing*/
93	#define IPPROTO_RSVP 46 /* resource reservation */
94	#define IPPROTO_GRE 47 /* General Routing Encap. */
95	#define IPPROTO_MHRP 48 /* Mobile Host Routing */
96	#define IPPROTO_BHA 49 /* BHA */
97	#define IPPROTO_ESP 50 /* SIPP Encap Sec. Payload */
98	#define IPPROTO_AH 51 /* SIPP Auth Header */
99	#define IPPROTO_INLSP 52 /* Integ. Net Layer Security */
100	#define IPPROTO_SWIPE 53 /* IP with encryption */
101	#define IPPROTO_NHRP 54 /* Next Hop Resolution */
102	/* 55-60: Unassigned */
103	#define IPPROTO_AHIP 61 /* any host internal protocol */
104	#define IPPROTO_CFTP 62 /* CFTP */
105	#define IPPROTO_HELLO 63 /* "hello" routing protocol */
106	#define IPPROTO_SATEXPAK 64 /* SATNET/Backroom EXPAK */
107	#define IPPROTO_KRYPTOLAN 65 /* Kryptolan */
108	#define IPPROTO_RVD 66 /* Remote Virtual Disk */
109	#define IPPROTO_IPPC 67 /* Pluribus Packet Core */
110	#define IPPROTO_ADFS 68 /* Any distributed FS */
111	#define IPPROTO_SATMON 69 /* Satnet Monitoring */
112	#define IPPROTO_VISA 70 /* VISA Protocol */
113	#define IPPROTO_IPCV 71 /* Packet Core Utility */
114	#define IPPROTO_CPNX 72 /* Comp. Prot. Net. Executive */
115	#define IPPROTO_CPHB 73 /* Comp. Prot. HeartBeat */
116	#define IPPROTO_WSN 74 /* Wang Span Network */
117	#define IPPROTO_PVP 75 /* Packet Video Protocol */
118	#define IPPROTO_BRSATMON 76 /* BackRoom SATNET Monitoring */
119	#define IPPROTO_ND 77 /* Sun net disk proto (temp.) */
120	#define IPPROTO_WBMON 78 /* WIDEBAND Monitoring */
121	#define IPPROTO_WBEXPAK 79 /* WIDEBAND EXPAK */
122	#define IPPROTO_EON 80 /* ISO cnlp */
123	#define IPPROTO_VMTP 81 /* VMTP */
124	#define IPPROTO_SVMTP 82 /* Secure VMTP */
125	#define IPPROTO_VINES 83 /* Banyon VINES */
126	#define IPPROTO_TTP 84 /* TTP */
127	#define IPPROTO_IGP 85 /* NSFNET-IGP */
128	#define IPPROTO_DGP 86 /* dissimilar gateway prot. */
129	#define IPPROTO_TCF 87 /* TCF */
130	#define IPPROTO_IGRP 88 /* Cisco/GXS IGRP */
131	#define IPPROTO_OSPFIGP 89 /* OSPFIGP */
132	#define IPPROTO_SRPC 90 /* Strite RPC protocol */
133	#define IPPROTO_LARP 91 /* Locus Address Resoloution */
134	#define IPPROTO_MTP 92 /* Multicast Transport */
135	#define IPPROTO_AX25 93 /* AX.25 Frames */
136	#define IPPROTO_IPEIP 94 /* IP encapsulated in IP */
137	#define IPPROTO_MICP 95 /* Mobile Int.ing control */
138	#define IPPROTO_SCCSP 96 /* Semaphore Comm. security */
139	#define IPPROTO_ETHERIP 97 /* Ethernet IP encapsulation */
140	#define IPPROTO_ENCAP 98 /* encapsulation header */
141	#define IPPROTO_APES 99 /* any private encr. scheme */
142	#define IPPROTO_GMTP 100 /* GMTP*/
143	/* 101-254: Unassigned */
144	/* 255: Reserved */
145	/* BSD Private, local use, namespace incursion */
146	#define IPPROTO_DIVERT 254 /* divert pseudo-protocol */
147	#define IPPROTO_RAW 255 /* raw IP packet */
148	#define IPPROTO_MAX 256
149
150
151	/*
152	* Local port number conventions:
153	*
154	* When a user does a bind(2) or connect(2) with a port number of zero,
155	* a non-conflicting local port address is chosen.
156	* The default range is IPPORT_RESERVED through
157	* IPPORT_USERRESERVED, although that is settable by sysctl.
158	*
159	* A user may set the IPPROTO_IP option IP_PORTRANGE to change this
160	* default assignment range.
161	*
162	* The value IP_PORTRANGE_DEFAULT causes the default behavior.
163	*
164	* The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
165	* into the "high" range. These are reserved for client outbound connections
166	* which do not want to be filtered by any firewalls.
167	*
168	* The value IP_PORTRANGE_LOW changes the range to the "low" are
169	* that is (by convention) restricted to privileged processes. This
170	* convention is based on "vouchsafe" principles only. It is only secure
171	* if you trust the remote host to restrict these ports.
172	*
173	* The default range of ports and the high range can be changed by
174	* sysctl(3). (net.inet.ip.port{hi,low}{first,last}_auto)
175	*
176	* Changing those values has bad security implications if you are
177	* using a a stateless firewall that is allowing packets outside of that
178	* range in order to allow transparent outgoing connections.
179	*
180	* Such a firewall configuration will generally depend on the use of these
181	* default values. If you change them, you may find your Security
182	* Administrator looking for you with a heavy object.
183	*/
184
185	/*
186	* Ports < IPPORT_RESERVED are reserved for
187	* privileged processes (e.g. root). (IP_PORTRANGE_LOW)
188	* Ports > IPPORT_USERRESERVED are reserved
189	* for servers, not necessarily privileged. (IP_PORTRANGE_DEFAULT)
190	*/
191	#define IPPORT_RESERVED 1024
192	#define IPPORT_USERRESERVED 5000
193
194	/*
195	* Default local port range to use by setting IP_PORTRANGE_HIGH
196	*/
197	#define IPPORT_HIFIRSTAUTO 40000
198	#define IPPORT_HILASTAUTO 44999
199
200	/*
201	* Scanning for a free reserved port return a value below IPPORT_RESERVED,
202	* but higher than IPPORT_RESERVEDSTART. Traditionally the start value was
203	* 512, but that conflicts with some well-known-services that firewalls may
204	* have a fit if we use.
205	*/
206	#define IPPORT_RESERVEDSTART 600
207	#define BYTE_PACK __attribute__((packed))
208	/*
209	* Internet address (a structure for historical reasons)
210	*/
211	struct in_addr {
212	u_long s_addr BYTE_PACK;
213	};
214
215	/*
216	* Definitions of bits in internet address integers.
217	* On subnets, the decomposition of addresses to host and net parts
218	* is done according to subnet mask, not the masks here.
219	*/
220	#define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0)
221	#define IN_CLASSA_NET 0xff000000
222	#define IN_CLASSA_NSHIFT 24
223	#define IN_CLASSA_HOST 0x00ffffff
224	#define IN_CLASSA_MAX 128
225
226	#define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000)
227	#define IN_CLASSB_NET 0xffff0000
228	#define IN_CLASSB_NSHIFT 16
229	#define IN_CLASSB_HOST 0x0000ffff
230	#define IN_CLASSB_MAX 65536
231
232	#define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000)
233	#define IN_CLASSC_NET 0xffffff00
234	#define IN_CLASSC_NSHIFT 8
235	#define IN_CLASSC_HOST 0x000000ff
236
237	#define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000)
238	#define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */
239	#define IN_CLASSD_NSHIFT 28 /* net and host fields, but */
240	#define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */
241	#define IN_MULTICAST(i) IN_CLASSD(i)
242
243	#define IN_EXPERIMENTAL(i) (((long)(i) & 0xf0000000) == 0xf0000000)
244	#define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000)
245
246	#define INADDR_ANY (u_long)0x00000000
247	#define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */
248	#ifndef KERNEL
249	#define INADDR_NONE 0xffffffff /* -1 return */
250	#endif
251
252	#define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */
253	#define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */
254	#define INADDR_ALLRTRS_GROUP (u_long)0xe0000002 /* 224.0.0.2 */
255	#define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */
256
257	#define IN_LOOPBACKNET 127 /* official! */
258	#ifndef INADDR_LOOPBACK
259	#define INADDR_LOOPBACK (u_long)0x7F000001 /* 127.0.0.1 */
260	#endif
261
262	/*
263	* Socket address, internet style.
264	*/
265	struct sockaddr_in {
266	u_char sin_len;
267	u_char sin_family;
268	u_short sin_port;
269	struct in_addr sin_addr;
270	char sin_zero[8];
271	};
272
273	/*
274	* Structure used to describe IP options.
275	* Used to store options internally, to pass them to a process,
276	* or to restore options retrieved earlier.
277	* The ip_dst is used for the first-hop gateway when using a source route
278	* (this gets put into the header proper).
279	*/
280	struct ip_opts {
281	struct in_addr ip_dst; /* first hop, 0 w/o src rt */
282	char ip_opts[40]; /* actually variable in size */
283	};
284
285	/*
286	* Options for use with [gs]etsockopt at the IP level.
287	* First word of comment is data type; bool is stored in int.
288	*/
289	#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */
290	#define IP_HDRINCL 2 /* int; header is included with data */
291	#define IP_TOS 3 /* int; IP type of service and preced. */
292	#define IP_TTL 4 /* int; IP time to live */
293	#define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */
294	#define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */
295	#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */
296	#define IP_RETOPTS 8 /* ip_opts; set/get IP options */
297	#define IP_MULTICAST_IF 9 /* u_char; set/get IP multicast i/f */
298	#define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */
299	#define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */
300	#define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */
301	#define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */
302	#define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */
303	#define IP_RSVP_ON 15 /* enable RSVP in kernel */
304	#define IP_RSVP_OFF 16 /* disable RSVP in kernel */
305	#define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */
306	#define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */
307	#define IP_PORTRANGE 19 /* int; range to choose for unspec port */
308	#define IP_RECVIF 20 /* bool; receive reception if w/dgram */
309
310	#define IP_FW_ADD 50 /* add a firewall rule to chain */
311	#define IP_FW_DEL 51 /* delete a firewall rule from chain */
312	#define IP_FW_FLUSH 52 /* flush firewall rule chain */
313	#define IP_FW_ZERO 53 /* clear single/all firewall counter(s) */
314	#define IP_FW_GET 54 /* get entire firewall rule chain */
315	#define IP_NAT 55 /* set/get NAT opts */
316
317	/*
318	* Defaults and limits for options
319	*/
320	#define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */
321	#define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
322	#define IP_MAX_MEMBERSHIPS 20 /* per socket */
323
324	/*
325	* Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
326	*/
327	struct ip_mreq {
328	struct in_addr imr_multiaddr; /* IP multicast address of group */
329	struct in_addr imr_interface; /* local IP address of interface */
330	};
331
332	/*
333	* Argument for IP_PORTRANGE:
334	* - which range to search when port is unspecified at bind() or connect()
335	*/
336	#define IP_PORTRANGE_DEFAULT 0 /* default range */
337	#define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
338	#define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
339
340	/*
341	* Definitions for inet sysctl operations.
342	*
343	* Third level is protocol number.
344	* Fourth level is desired variable within that protocol.
345	*/
346	#define IPPROTO_MAXID (IPPROTO_IDP + 1) /* don't list to IPPROTO_MAX */
347
348	#define CTL_IPPROTO_NAMES { \
349	{ "ip", CTLTYPE_NODE }, \
350	{ "icmp", CTLTYPE_NODE }, \
351	{ "igmp", CTLTYPE_NODE }, \
352	{ "ggp", CTLTYPE_NODE }, \
353	{ 0, 0 }, \
354	{ 0, 0 }, \
355	{ "tcp", CTLTYPE_NODE }, \
356	{ 0, 0 }, \
357	{ "egp", CTLTYPE_NODE }, \
358	{ 0, 0 }, \
359	{ 0, 0 }, \
360	{ 0, 0 }, \
361	{ "pup", CTLTYPE_NODE }, \
362	{ 0, 0 }, \
363	{ 0, 0 }, \
364	{ 0, 0 }, \
365	{ 0, 0 }, \
366	{ "udp", CTLTYPE_NODE }, \
367	{ 0, 0 }, \
368	{ 0, 0 }, \
369	{ 0, 0 }, \
370	{ 0, 0 }, \
371	{ "idp", CTLTYPE_NODE }, \
372	}
373
374	/*
375	* Names for IP sysctl objects
376	*/
377	#define IPCTL_FORWARDING 1 /* act as router */
378	#define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */
379	#define IPCTL_DEFTTL 3 /* default TTL */
380	#ifdef notyet
381	#define IPCTL_DEFMTU 4 /* default MTU */
382	#endif
383	#define IPCTL_RTEXPIRE 5 /* cloned route expiration time */
384	#define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */
385	#define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */
386	#define IPCTL_SOURCEROUTE 8 /* may perform source routes */
387	#define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */
388	#define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */
389	#define IPCTL_INTRQDROPS 11 /* number of netisr q drops */
390	#define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */
391	#define IPCTL_MAXID 13
392
393	#define IPCTL_NAMES { \
394	{ 0, 0 }, \
395	{ "forwarding", CTLTYPE_INT }, \
396	{ "redirect", CTLTYPE_INT }, \
397	{ "ttl", CTLTYPE_INT }, \
398	{ "mtu", CTLTYPE_INT }, \
399	{ "rtexpire", CTLTYPE_INT }, \
400	{ "rtminexpire", CTLTYPE_INT }, \
401	{ "rtmaxcache", CTLTYPE_INT }, \
402	{ "sourceroute", CTLTYPE_INT }, \
403	{ "directed-broadcast", CTLTYPE_INT }, \
404	{ "intr-queue-maxlen", CTLTYPE_INT }, \
405	{ "intr-queue-drops", CTLTYPE_INT }, \
406	{ "accept_sourceroute", CTLTYPE_INT }, \
407	}
408
409
410	#ifdef KERNEL
411	struct ifnet; struct mbuf; /* forward declarations for Standard C */
412
413	int in_broadcast __P((struct in_addr, struct ifnet *));
414	int in_canforward __P((struct in_addr));
415	int in_cksum __P((struct mbuf *, int));
416	int in_localaddr __P((struct in_addr));
417	char inet_ntoa __P((struct in_addr)); / in libkern */
418
419	/* Firewall hooks */
420	struct ip;
421	typedef int ip_fw_chk_t __P((struct ip*, int, struct ifnet, int, struct mbuf**));
422	typedef int ip_fw_ctl_t __P((int, struct mbuf**));
423	extern ip_fw_chk_t *ip_fw_chk_ptr;
424	extern ip_fw_ctl_t *ip_fw_ctl_ptr;
425
426	/* IP NAT hooks */
427	typedef int ip_nat_t __P((struct ip, struct mbuf, struct ifnet*, int));
428	typedef int ip_nat_ctl_t __P((int, struct mbuf**));
429	extern ip_nat_t *ip_nat_ptr;
430	extern ip_nat_ctl_t *ip_nat_ctl_ptr;
431	#define IP_NAT_IN 0x00000001
432	#define IP_NAT_OUT 0x00000002
433
434	#endif /* KERNEL */
435
436	#endif

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