xref: /freebsd/sys/netinet/in.h (revision 42c159fe388a3765f69860c84183700af37aca8a)
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  * $FreeBSD$
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_HOPOPTS		0		/* IP6 hop-by-hop options */
50 #define	IPPROTO_ICMP		1		/* control message protocol */
51 #define	IPPROTO_IGMP		2		/* group mgmt protocol */
52 #define	IPPROTO_GGP		3		/* gateway^2 (deprecated) */
53 #define IPPROTO_IPV4		4 		/* IPv4 encapsulation */
54 #define IPPROTO_IPIP		IPPROTO_IPV4	/* for compatibility */
55 #define	IPPROTO_TCP		6		/* tcp */
56 #define	IPPROTO_ST		7		/* Stream protocol II */
57 #define	IPPROTO_EGP		8		/* exterior gateway protocol */
58 #define	IPPROTO_PIGP		9		/* private interior gateway */
59 #define	IPPROTO_RCCMON		10		/* BBN RCC Monitoring */
60 #define	IPPROTO_NVPII		11		/* network voice protocol*/
61 #define	IPPROTO_PUP		12		/* pup */
62 #define	IPPROTO_ARGUS		13		/* Argus */
63 #define	IPPROTO_EMCON		14		/* EMCON */
64 #define	IPPROTO_XNET		15		/* Cross Net Debugger */
65 #define	IPPROTO_CHAOS		16		/* Chaos*/
66 #define	IPPROTO_UDP		17		/* user datagram protocol */
67 #define	IPPROTO_MUX		18		/* Multiplexing */
68 #define	IPPROTO_MEAS		19		/* DCN Measurement Subsystems */
69 #define	IPPROTO_HMP		20		/* Host Monitoring */
70 #define	IPPROTO_PRM		21		/* Packet Radio Measurement */
71 #define	IPPROTO_IDP		22		/* xns idp */
72 #define	IPPROTO_TRUNK1		23		/* Trunk-1 */
73 #define	IPPROTO_TRUNK2		24		/* Trunk-2 */
74 #define	IPPROTO_LEAF1		25		/* Leaf-1 */
75 #define	IPPROTO_LEAF2		26		/* Leaf-2 */
76 #define	IPPROTO_RDP		27		/* Reliable Data */
77 #define	IPPROTO_IRTP		28		/* Reliable Transaction */
78 #define	IPPROTO_TP		29 		/* tp-4 w/ class negotiation */
79 #define	IPPROTO_BLT		30		/* Bulk Data Transfer */
80 #define	IPPROTO_NSP		31		/* Network Services */
81 #define	IPPROTO_INP		32		/* Merit Internodal */
82 #define	IPPROTO_SEP		33		/* Sequential Exchange */
83 #define	IPPROTO_3PC		34		/* Third Party Connect */
84 #define	IPPROTO_IDPR		35		/* InterDomain Policy Routing */
85 #define	IPPROTO_XTP		36		/* XTP */
86 #define	IPPROTO_DDP		37		/* Datagram Delivery */
87 #define	IPPROTO_CMTP		38		/* Control Message Transport */
88 #define	IPPROTO_TPXX		39		/* TP++ Transport */
89 #define	IPPROTO_IL		40		/* IL transport protocol */
90 #define	IPPROTO_IPV6		41		/* IP6 header */
91 #define	IPPROTO_SDRP		42		/* Source Demand Routing */
92 #define	IPPROTO_ROUTING		43		/* IP6 routing header */
93 #define	IPPROTO_FRAGMENT	44		/* IP6 fragmentation header */
94 #define	IPPROTO_IDRP		45		/* InterDomain Routing*/
95 #define	IPPROTO_RSVP		46 		/* resource reservation */
96 #define	IPPROTO_GRE		47		/* General Routing Encap. */
97 #define	IPPROTO_MHRP		48		/* Mobile Host Routing */
98 #define	IPPROTO_BHA		49		/* BHA */
99 #define	IPPROTO_ESP		50		/* IP6 Encap Sec. Payload */
100 #define	IPPROTO_AH		51		/* IP6 Auth Header */
101 #define	IPPROTO_INLSP		52		/* Integ. Net Layer Security */
102 #define	IPPROTO_SWIPE		53		/* IP with encryption */
103 #define	IPPROTO_NHRP		54		/* Next Hop Resolution */
104 #define IPPROTO_MOBILE		55		/* IP Mobility */
105 #define IPPROTO_TLSP		56		/* Transport Layer Security */
106 #define IPPROTO_SKIP		57		/* SKIP */
107 #define	IPPROTO_ICMPV6		58		/* ICMP6 */
108 #define	IPPROTO_NONE		59		/* IP6 no next header */
109 #define	IPPROTO_DSTOPTS		60		/* IP6 destination option */
110 #define	IPPROTO_AHIP		61		/* any host internal protocol */
111 #define	IPPROTO_CFTP		62		/* CFTP */
112 #define	IPPROTO_HELLO		63		/* "hello" routing protocol */
113 #define	IPPROTO_SATEXPAK	64		/* SATNET/Backroom EXPAK */
114 #define	IPPROTO_KRYPTOLAN	65		/* Kryptolan */
115 #define	IPPROTO_RVD		66		/* Remote Virtual Disk */
116 #define	IPPROTO_IPPC		67		/* Pluribus Packet Core */
117 #define	IPPROTO_ADFS		68		/* Any distributed FS */
118 #define	IPPROTO_SATMON		69		/* Satnet Monitoring */
119 #define	IPPROTO_VISA		70		/* VISA Protocol */
120 #define	IPPROTO_IPCV		71		/* Packet Core Utility */
121 #define	IPPROTO_CPNX		72		/* Comp. Prot. Net. Executive */
122 #define	IPPROTO_CPHB		73		/* Comp. Prot. HeartBeat */
123 #define	IPPROTO_WSN		74		/* Wang Span Network */
124 #define	IPPROTO_PVP		75		/* Packet Video Protocol */
125 #define	IPPROTO_BRSATMON	76		/* BackRoom SATNET Monitoring */
126 #define	IPPROTO_ND		77		/* Sun net disk proto (temp.) */
127 #define	IPPROTO_WBMON		78		/* WIDEBAND Monitoring */
128 #define	IPPROTO_WBEXPAK		79		/* WIDEBAND EXPAK */
129 #define	IPPROTO_EON		80		/* ISO cnlp */
130 #define	IPPROTO_VMTP		81		/* VMTP */
131 #define	IPPROTO_SVMTP		82		/* Secure VMTP */
132 #define	IPPROTO_VINES		83		/* Banyon VINES */
133 #define	IPPROTO_TTP		84		/* TTP */
134 #define	IPPROTO_IGP		85		/* NSFNET-IGP */
135 #define	IPPROTO_DGP		86		/* dissimilar gateway prot. */
136 #define	IPPROTO_TCF		87		/* TCF */
137 #define	IPPROTO_IGRP		88		/* Cisco/GXS IGRP */
138 #define	IPPROTO_OSPFIGP		89		/* OSPFIGP */
139 #define	IPPROTO_SRPC		90		/* Strite RPC protocol */
140 #define	IPPROTO_LARP		91		/* Locus Address Resoloution */
141 #define	IPPROTO_MTP		92		/* Multicast Transport */
142 #define	IPPROTO_AX25		93		/* AX.25 Frames */
143 #define	IPPROTO_IPEIP		94		/* IP encapsulated in IP */
144 #define	IPPROTO_MICP		95		/* Mobile Int.ing control */
145 #define	IPPROTO_SCCSP		96		/* Semaphore Comm. security */
146 #define	IPPROTO_ETHERIP		97		/* Ethernet IP encapsulation */
147 #define	IPPROTO_ENCAP		98		/* encapsulation header */
148 #define	IPPROTO_APES		99		/* any private encr. scheme */
149 #define	IPPROTO_GMTP		100		/* GMTP*/
150 #define	IPPROTO_IPCOMP		108		/* payload compression (IPComp) */
151 /* 101-254: Partly Unassigned */
152 #define	IPPROTO_PIM		103		/* Protocol Independent Mcast */
153 #define	IPPROTO_PGM		113		/* PGM */
154 /* 255: Reserved */
155 /* BSD Private, local use, namespace incursion */
156 #define	IPPROTO_DIVERT		254		/* divert pseudo-protocol */
157 #define	IPPROTO_RAW		255		/* raw IP packet */
158 #define	IPPROTO_MAX		256
159 
160 /* last return value of *_input(), meaning "all job for this pkt is done".  */
161 #define	IPPROTO_DONE		257
162 
163 /*
164  * Local port number conventions:
165  *
166  * When a user does a bind(2) or connect(2) with a port number of zero,
167  * a non-conflicting local port address is chosen.
168  * The default range is IPPORT_RESERVED through
169  * IPPORT_USERRESERVED, although that is settable by sysctl.
170  *
171  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
172  * default assignment range.
173  *
174  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
175  *
176  * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
177  * into the "high" range.  These are reserved for client outbound connections
178  * which do not want to be filtered by any firewalls.
179  *
180  * The value IP_PORTRANGE_LOW changes the range to the "low" are
181  * that is (by convention) restricted to privileged processes.  This
182  * convention is based on "vouchsafe" principles only.  It is only secure
183  * if you trust the remote host to restrict these ports.
184  *
185  * The default range of ports and the high range can be changed by
186  * sysctl(3).  (net.inet.ip.port{hi,low}{first,last}_auto)
187  *
188  * Changing those values has bad security implications if you are
189  * using a a stateless firewall that is allowing packets outside of that
190  * range in order to allow transparent outgoing connections.
191  *
192  * Such a firewall configuration will generally depend on the use of these
193  * default values.  If you change them, you may find your Security
194  * Administrator looking for you with a heavy object.
195  *
196  * For a slightly more orthodox text view on this:
197  *
198  *            ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
199  *
200  *    port numbers are divided into three ranges:
201  *
202  *                0 -  1023 Well Known Ports
203  *             1024 - 49151 Registered Ports
204  *            49152 - 65535 Dynamic and/or Private Ports
205  *
206  */
207 
208 /*
209  * Ports < IPPORT_RESERVED are reserved for
210  * privileged processes (e.g. root).         (IP_PORTRANGE_LOW)
211  * Ports > IPPORT_USERRESERVED are reserved
212  * for servers, not necessarily privileged.  (IP_PORTRANGE_DEFAULT)
213  */
214 #define	IPPORT_RESERVED		1024
215 #define	IPPORT_USERRESERVED	5000
216 
217 /*
218  * Default local port range to use by setting IP_PORTRANGE_HIGH
219  */
220 #define	IPPORT_HIFIRSTAUTO	49152
221 #define	IPPORT_HILASTAUTO	65535
222 
223 /*
224  * Scanning for a free reserved port return a value below IPPORT_RESERVED,
225  * but higher than IPPORT_RESERVEDSTART.  Traditionally the start value was
226  * 512, but that conflicts with some well-known-services that firewalls may
227  * have a fit if we use.
228  */
229 #define IPPORT_RESERVEDSTART	600
230 
231 #define	IPPORT_MAX		65535
232 
233 #ifndef _IN_ADDR_T_DECLARED_
234 typedef	__uint32_t	in_addr_t;
235 #define	_IN_ADDR_T_DECLARED_
236 #endif
237 
238 #ifndef _IN_PORT_T_DECLARED_
239 typedef	__uint16_t	in_port_t;
240 #define	_IN_PORT_T_DECLARED_
241 #endif
242 
243 /*
244  * Internet address (a structure for historical reasons)
245  */
246 #ifndef	_STRUCT_IN_ADDR_DECLARED
247 struct in_addr {
248 	in_addr_t s_addr;
249 };
250 #define	_STRUCT_IN_ADDR_DECLARED
251 #endif
252 
253 /*
254  * Definitions of bits in internet address integers.
255  * On subnets, the decomposition of addresses to host and net parts
256  * is done according to subnet mask, not the masks here.
257  */
258 #define	IN_CLASSA(i)		(((u_int32_t)(i) & 0x80000000) == 0)
259 #define	IN_CLASSA_NET		0xff000000
260 #define	IN_CLASSA_NSHIFT	24
261 #define	IN_CLASSA_HOST		0x00ffffff
262 #define	IN_CLASSA_MAX		128
263 
264 #define	IN_CLASSB(i)		(((u_int32_t)(i) & 0xc0000000) == 0x80000000)
265 #define	IN_CLASSB_NET		0xffff0000
266 #define	IN_CLASSB_NSHIFT	16
267 #define	IN_CLASSB_HOST		0x0000ffff
268 #define	IN_CLASSB_MAX		65536
269 
270 #define	IN_CLASSC(i)		(((u_int32_t)(i) & 0xe0000000) == 0xc0000000)
271 #define	IN_CLASSC_NET		0xffffff00
272 #define	IN_CLASSC_NSHIFT	8
273 #define	IN_CLASSC_HOST		0x000000ff
274 
275 #define	IN_CLASSD(i)		(((u_int32_t)(i) & 0xf0000000) == 0xe0000000)
276 #define	IN_CLASSD_NET		0xf0000000	/* These ones aren't really */
277 #define	IN_CLASSD_NSHIFT	28		/* net and host fields, but */
278 #define	IN_CLASSD_HOST		0x0fffffff	/* routing needn't know.    */
279 #define	IN_MULTICAST(i)		IN_CLASSD(i)
280 
281 #define	IN_EXPERIMENTAL(i)	(((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
282 #define	IN_BADCLASS(i)		(((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
283 
284 #define	INADDR_ANY		(u_int32_t)0x00000000
285 #define	INADDR_LOOPBACK		(u_int32_t)0x7f000001
286 #define	INADDR_BROADCAST	(u_int32_t)0xffffffff	/* must be masked */
287 #ifndef _KERNEL
288 #define	INADDR_NONE		0xffffffff		/* -1 return */
289 #endif
290 
291 #define	INADDR_UNSPEC_GROUP	(u_int32_t)0xe0000000	/* 224.0.0.0 */
292 #define	INADDR_ALLHOSTS_GROUP	(u_int32_t)0xe0000001	/* 224.0.0.1 */
293 #define	INADDR_ALLRTRS_GROUP	(u_int32_t)0xe0000002	/* 224.0.0.2 */
294 #define	INADDR_MAX_LOCAL_GROUP	(u_int32_t)0xe00000ff	/* 224.0.0.255 */
295 
296 #define	IN_LOOPBACKNET		127			/* official! */
297 
298 /*
299  * Socket address, internet style.
300  */
301 struct sockaddr_in {
302 	u_char	sin_len;
303 	u_char	sin_family;
304 	u_short	sin_port;
305 	struct	in_addr sin_addr;
306 	char	sin_zero[8];
307 };
308 
309 #ifndef INET_ADDRSTRLEN
310 #define	INET_ADDRSTRLEN                 16
311 #endif
312 
313 /*
314  * Options for use with [gs]etsockopt at the IP level.
315  * First word of comment is data type; bool is stored in int.
316  */
317 #define	IP_OPTIONS		1    /* buf/ip_opts; set/get IP options */
318 #define	IP_HDRINCL		2    /* int; header is included with data */
319 #define	IP_TOS			3    /* int; IP type of service and preced. */
320 #define	IP_TTL			4    /* int; IP time to live */
321 #define	IP_RECVOPTS		5    /* bool; receive all IP opts w/dgram */
322 #define	IP_RECVRETOPTS		6    /* bool; receive IP opts for response */
323 #define	IP_RECVDSTADDR		7    /* bool; receive IP dst addr w/dgram */
324 #define	IP_RETOPTS		8    /* ip_opts; set/get IP options */
325 #define	IP_MULTICAST_IF		9    /* u_char; set/get IP multicast i/f  */
326 #define	IP_MULTICAST_TTL	10   /* u_char; set/get IP multicast ttl */
327 #define	IP_MULTICAST_LOOP	11   /* u_char; set/get IP multicast loopback */
328 #define	IP_ADD_MEMBERSHIP	12   /* ip_mreq; add an IP group membership */
329 #define	IP_DROP_MEMBERSHIP	13   /* ip_mreq; drop an IP group membership */
330 #define IP_MULTICAST_VIF	14   /* set/get IP mcast virt. iface */
331 #define IP_RSVP_ON		15   /* enable RSVP in kernel */
332 #define IP_RSVP_OFF		16   /* disable RSVP in kernel */
333 #define IP_RSVP_VIF_ON		17   /* set RSVP per-vif socket */
334 #define IP_RSVP_VIF_OFF		18   /* unset RSVP per-vif socket */
335 #define IP_PORTRANGE		19   /* int; range to choose for unspec port */
336 #define	IP_RECVIF		20   /* bool; receive reception if w/dgram */
337 /* for IPSEC */
338 #define	IP_IPSEC_POLICY		21   /* int; set/get security policy */
339 #define	IP_FAITH		22   /* bool; accept FAITH'ed connections */
340 
341 #define	IP_FW_ADD     		50   /* add a firewall rule to chain */
342 #define	IP_FW_DEL    		51   /* delete a firewall rule from chain */
343 #define	IP_FW_FLUSH   		52   /* flush firewall rule chain */
344 #define	IP_FW_ZERO    		53   /* clear single/all firewall counter(s) */
345 #define	IP_FW_GET     		54   /* get entire firewall rule chain */
346 #define	IP_FW_RESETLOG		55   /* reset logging counters */
347 
348 #define	IP_DUMMYNET_CONFIGURE	60   /* add/configure a dummynet pipe */
349 #define	IP_DUMMYNET_DEL		61   /* delete a dummynet pipe from chain */
350 #define	IP_DUMMYNET_FLUSH	62   /* flush dummynet */
351 #define	IP_DUMMYNET_GET		64   /* get entire dummynet pipes */
352 
353 /*
354  * Defaults and limits for options
355  */
356 #define	IP_DEFAULT_MULTICAST_TTL  1	/* normally limit m'casts to 1 hop  */
357 #define	IP_DEFAULT_MULTICAST_LOOP 1	/* normally hear sends if a member  */
358 #define	IP_MAX_MEMBERSHIPS	20	/* per socket */
359 
360 /*
361  * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
362  */
363 struct ip_mreq {
364 	struct	in_addr imr_multiaddr;	/* IP multicast address of group */
365 	struct	in_addr imr_interface;	/* local IP address of interface */
366 };
367 
368 /*
369  * Argument for IP_PORTRANGE:
370  * - which range to search when port is unspecified at bind() or connect()
371  */
372 #define	IP_PORTRANGE_DEFAULT	0	/* default range */
373 #define	IP_PORTRANGE_HIGH	1	/* "high" - request firewall bypass */
374 #define	IP_PORTRANGE_LOW	2	/* "low" - vouchsafe security */
375 
376 /*
377  * Definitions for inet sysctl operations.
378  *
379  * Third level is protocol number.
380  * Fourth level is desired variable within that protocol.
381  */
382 #define	IPPROTO_MAXID	(IPPROTO_AH + 1)	/* don't list to IPPROTO_MAX */
383 
384 #define	CTL_IPPROTO_NAMES { \
385 	{ "ip", CTLTYPE_NODE }, \
386 	{ "icmp", CTLTYPE_NODE }, \
387 	{ "igmp", CTLTYPE_NODE }, \
388 	{ "ggp", CTLTYPE_NODE }, \
389 	{ 0, 0 }, \
390 	{ 0, 0 }, \
391 	{ "tcp", CTLTYPE_NODE }, \
392 	{ 0, 0 }, \
393 	{ "egp", CTLTYPE_NODE }, \
394 	{ 0, 0 }, \
395 	{ 0, 0 }, \
396 	{ 0, 0 }, \
397 	{ "pup", CTLTYPE_NODE }, \
398 	{ 0, 0 }, \
399 	{ 0, 0 }, \
400 	{ 0, 0 }, \
401 	{ 0, 0 }, \
402 	{ "udp", CTLTYPE_NODE }, \
403 	{ 0, 0 }, \
404 	{ 0, 0 }, \
405 	{ 0, 0 }, \
406 	{ 0, 0 }, \
407 	{ "idp", CTLTYPE_NODE }, \
408 	{ 0, 0 }, \
409 	{ 0, 0 }, \
410 	{ 0, 0 }, \
411 	{ 0, 0 }, \
412 	{ 0, 0 }, \
413 	{ 0, 0 }, \
414 	{ 0, 0 }, \
415 	{ 0, 0 }, \
416 	{ 0, 0 }, \
417 	{ 0, 0 }, \
418 	{ 0, 0 }, \
419 	{ 0, 0 }, \
420 	{ 0, 0 }, \
421 	{ 0, 0 }, \
422 	{ 0, 0 }, \
423 	{ 0, 0 }, \
424 	{ 0, 0 }, \
425 	{ 0, 0 }, \
426 	{ 0, 0 }, \
427 	{ 0, 0 }, \
428 	{ 0, 0 }, \
429 	{ 0, 0 }, \
430 	{ 0, 0 }, \
431 	{ 0, 0 }, \
432 	{ 0, 0 }, \
433 	{ 0, 0 }, \
434 	{ 0, 0 }, \
435 	{ 0, 0 }, \
436 	{ "ipsec", CTLTYPE_NODE }, \
437 }
438 
439 /*
440  * Names for IP sysctl objects
441  */
442 #define	IPCTL_FORWARDING	1	/* act as router */
443 #define	IPCTL_SENDREDIRECTS	2	/* may send redirects when forwarding */
444 #define	IPCTL_DEFTTL		3	/* default TTL */
445 #ifdef notyet
446 #define	IPCTL_DEFMTU		4	/* default MTU */
447 #endif
448 #define IPCTL_RTEXPIRE		5	/* cloned route expiration time */
449 #define IPCTL_RTMINEXPIRE	6	/* min value for expiration time */
450 #define IPCTL_RTMAXCACHE	7	/* trigger level for dynamic expire */
451 #define	IPCTL_SOURCEROUTE	8	/* may perform source routes */
452 #define	IPCTL_DIRECTEDBROADCAST	9	/* may re-broadcast received packets */
453 #define IPCTL_INTRQMAXLEN	10	/* max length of netisr queue */
454 #define	IPCTL_INTRQDROPS	11	/* number of netisr q drops */
455 #define	IPCTL_STATS		12	/* ipstat structure */
456 #define	IPCTL_ACCEPTSOURCEROUTE	13	/* may accept source routed packets */
457 #define	IPCTL_FASTFORWARDING	14	/* use fast IP forwarding code */
458 #define	IPCTL_KEEPFAITH		15	/* FAITH IPv4->IPv6 translater ctl */
459 #define	IPCTL_GIF_TTL		16	/* default TTL for gif encap packet */
460 #define	IPCTL_MAXID		17
461 
462 #define	IPCTL_NAMES { \
463 	{ 0, 0 }, \
464 	{ "forwarding", CTLTYPE_INT }, \
465 	{ "redirect", CTLTYPE_INT }, \
466 	{ "ttl", CTLTYPE_INT }, \
467 	{ "mtu", CTLTYPE_INT }, \
468 	{ "rtexpire", CTLTYPE_INT }, \
469 	{ "rtminexpire", CTLTYPE_INT }, \
470 	{ "rtmaxcache", CTLTYPE_INT }, \
471 	{ "sourceroute", CTLTYPE_INT }, \
472  	{ "directed-broadcast", CTLTYPE_INT }, \
473 	{ "intr-queue-maxlen", CTLTYPE_INT }, \
474 	{ "intr-queue-drops", CTLTYPE_INT }, \
475 	{ "stats", CTLTYPE_STRUCT }, \
476 	{ "accept_sourceroute", CTLTYPE_INT }, \
477 	{ "fastforwarding", CTLTYPE_INT }, \
478 }
479 
480 #ifdef _KERNEL
481 struct ifnet; struct mbuf;	/* forward declarations for Standard C */
482 #endif
483 
484 /* INET6 stuff */
485 #define	__KAME_NETINET_IN_H_INCLUDED_
486 #include <netinet6/in6.h>
487 #undef __KAME_NETINET_IN_H_INCLUDED_
488 
489 #ifdef _KERNEL
490 
491 int	 in_broadcast(struct in_addr, struct ifnet *);
492 int	 in_canforward(struct in_addr);
493 int	 in_localaddr(struct in_addr);
494 char 	*inet_ntoa(struct in_addr); /* in libkern */
495 char	*inet_ntoa_r(struct in_addr ina, char *buf); /* in libkern */
496 
497 #define satosin(sa)	((struct sockaddr_in *)(sa))
498 #define sintosa(sin)	((struct sockaddr *)(sin))
499 #define ifatoia(ifa)	((struct in_ifaddr *)(ifa))
500 
501 #else /* !_KERNEL */
502 
503 #ifndef _BYTEORDER_PROTOTYPED
504 #define	_BYTEORDER_PROTOTYPED
505 __BEGIN_DECLS
506 __uint32_t	htonl(__uint32_t);
507 __uint16_t	htons(__uint16_t);
508 __uint32_t	ntohl(__uint32_t);
509 __uint16_t	ntohs(__uint16_t);
510 __END_DECLS
511 #endif
512 
513 #ifndef _BYTEORDER_FUNC_DEFINED
514 #define	_BYTEORDER_FUNC_DEFINED
515 #define	htonl(x)	__htonl(x)
516 #define	htons(x)	__htons(x)
517 #define	ntohl(x)	__ntohl(x)
518 #define	ntohs(x)	__ntohs(x)
519 #endif
520 
521 #endif /* _KERNEL */
522 
523 #endif
524