FreeBSD/Linux Kernel Cross Reference
sys/netinet/in.h
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 * 4. 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 * @(#)in.h 8.3 (Berkeley) 1/3/94
30 * $FreeBSD: head/sys/netinet/in.h 199208 2009-11-12 00:46:28Z attilio $
31 */
32
33 #ifndef _NETINET_IN_H_
34 #define _NETINET_IN_H_
35
36 #include <sys/cdefs.h>
37 #include <sys/_types.h>
38 #include <machine/endian.h>
39
40 /* Protocols common to RFC 1700, POSIX, and X/Open. */
41 #define IPPROTO_IP 0 /* dummy for IP */
42 #define IPPROTO_ICMP 1 /* control message protocol */
43 #define IPPROTO_TCP 6 /* tcp */
44 #define IPPROTO_UDP 17 /* user datagram protocol */
45
46 #define INADDR_ANY (u_int32_t)0x00000000
47 #define INADDR_BROADCAST (u_int32_t)0xffffffff /* must be masked */
48
49 #ifndef _UINT8_T_DECLARED
50 typedef __uint8_t uint8_t;
51 #define _UINT8_T_DECLARED
52 #endif
53
54 #ifndef _UINT16_T_DECLARED
55 typedef __uint16_t uint16_t;
56 #define _UINT16_T_DECLARED
57 #endif
58
59 #ifndef _UINT32_T_DECLARED
60 typedef __uint32_t uint32_t;
61 #define _UINT32_T_DECLARED
62 #endif
63
64 #ifndef _IN_ADDR_T_DECLARED
65 typedef uint32_t in_addr_t;
66 #define _IN_ADDR_T_DECLARED
67 #endif
68
69 #ifndef _IN_PORT_T_DECLARED
70 typedef uint16_t in_port_t;
71 #define _IN_PORT_T_DECLARED
72 #endif
73
74 #ifndef _SA_FAMILY_T_DECLARED
75 typedef __sa_family_t sa_family_t;
76 #define _SA_FAMILY_T_DECLARED
77 #endif
78
79 /* Internet address (a structure for historical reasons). */
80 #ifndef _STRUCT_IN_ADDR_DECLARED
81 struct in_addr {
82 in_addr_t s_addr;
83 };
84 #define _STRUCT_IN_ADDR_DECLARED
85 #endif
86
87 #ifndef _SOCKLEN_T_DECLARED
88 typedef __socklen_t socklen_t;
89 #define _SOCKLEN_T_DECLARED
90 #endif
91
92 #include <sys/_sockaddr_storage.h>
93
94 /* Socket address, internet style. */
95 struct sockaddr_in {
96 uint8_t sin_len;
97 sa_family_t sin_family;
98 in_port_t sin_port;
99 struct in_addr sin_addr;
100 char sin_zero[8];
101 };
102
103 #if !defined(_KERNEL) && __BSD_VISIBLE
104
105 #ifndef _BYTEORDER_PROTOTYPED
106 #define _BYTEORDER_PROTOTYPED
107 __BEGIN_DECLS
108 uint32_t htonl(uint32_t);
109 uint16_t htons(uint16_t);
110 uint32_t ntohl(uint32_t);
111 uint16_t ntohs(uint16_t);
112 __END_DECLS
113 #endif
114
115 #ifndef _BYTEORDER_FUNC_DEFINED
116 #define _BYTEORDER_FUNC_DEFINED
117 #define htonl(x) __htonl(x)
118 #define htons(x) __htons(x)
119 #define ntohl(x) __ntohl(x)
120 #define ntohs(x) __ntohs(x)
121 #endif
122
123 #endif /* !_KERNEL && __BSD_VISIBLE */
124
125 #if __POSIX_VISIBLE >= 200112
126 #define IPPROTO_RAW 255 /* raw IP packet */
127 #define INET_ADDRSTRLEN 16
128 #endif
129
130 #if __BSD_VISIBLE
131 /*
132 * Constants and structures defined by the internet system,
133 * Per RFC 790, September 1981, and numerous additions.
134 */
135
136 /*
137 * Protocols (RFC 1700)
138 */
139 #define IPPROTO_HOPOPTS 0 /* IP6 hop-by-hop options */
140 #define IPPROTO_IGMP 2 /* group mgmt protocol */
141 #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */
142 #define IPPROTO_IPV4 4 /* IPv4 encapsulation */
143 #define IPPROTO_IPIP IPPROTO_IPV4 /* for compatibility */
144 #define IPPROTO_ST 7 /* Stream protocol II */
145 #define IPPROTO_EGP 8 /* exterior gateway protocol */
146 #define IPPROTO_PIGP 9 /* private interior gateway */
147 #define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */
148 #define IPPROTO_NVPII 11 /* network voice protocol*/
149 #define IPPROTO_PUP 12 /* pup */
150 #define IPPROTO_ARGUS 13 /* Argus */
151 #define IPPROTO_EMCON 14 /* EMCON */
152 #define IPPROTO_XNET 15 /* Cross Net Debugger */
153 #define IPPROTO_CHAOS 16 /* Chaos*/
154 #define IPPROTO_MUX 18 /* Multiplexing */
155 #define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */
156 #define IPPROTO_HMP 20 /* Host Monitoring */
157 #define IPPROTO_PRM 21 /* Packet Radio Measurement */
158 #define IPPROTO_IDP 22 /* xns idp */
159 #define IPPROTO_TRUNK1 23 /* Trunk-1 */
160 #define IPPROTO_TRUNK2 24 /* Trunk-2 */
161 #define IPPROTO_LEAF1 25 /* Leaf-1 */
162 #define IPPROTO_LEAF2 26 /* Leaf-2 */
163 #define IPPROTO_RDP 27 /* Reliable Data */
164 #define IPPROTO_IRTP 28 /* Reliable Transaction */
165 #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */
166 #define IPPROTO_BLT 30 /* Bulk Data Transfer */
167 #define IPPROTO_NSP 31 /* Network Services */
168 #define IPPROTO_INP 32 /* Merit Internodal */
169 #define IPPROTO_SEP 33 /* Sequential Exchange */
170 #define IPPROTO_3PC 34 /* Third Party Connect */
171 #define IPPROTO_IDPR 35 /* InterDomain Policy Routing */
172 #define IPPROTO_XTP 36 /* XTP */
173 #define IPPROTO_DDP 37 /* Datagram Delivery */
174 #define IPPROTO_CMTP 38 /* Control Message Transport */
175 #define IPPROTO_TPXX 39 /* TP++ Transport */
176 #define IPPROTO_IL 40 /* IL transport protocol */
177 #define IPPROTO_IPV6 41 /* IP6 header */
178 #define IPPROTO_SDRP 42 /* Source Demand Routing */
179 #define IPPROTO_ROUTING 43 /* IP6 routing header */
180 #define IPPROTO_FRAGMENT 44 /* IP6 fragmentation header */
181 #define IPPROTO_IDRP 45 /* InterDomain Routing*/
182 #define IPPROTO_RSVP 46 /* resource reservation */
183 #define IPPROTO_GRE 47 /* General Routing Encap. */
184 #define IPPROTO_MHRP 48 /* Mobile Host Routing */
185 #define IPPROTO_BHA 49 /* BHA */
186 #define IPPROTO_ESP 50 /* IP6 Encap Sec. Payload */
187 #define IPPROTO_AH 51 /* IP6 Auth Header */
188 #define IPPROTO_INLSP 52 /* Integ. Net Layer Security */
189 #define IPPROTO_SWIPE 53 /* IP with encryption */
190 #define IPPROTO_NHRP 54 /* Next Hop Resolution */
191 #define IPPROTO_MOBILE 55 /* IP Mobility */
192 #define IPPROTO_TLSP 56 /* Transport Layer Security */
193 #define IPPROTO_SKIP 57 /* SKIP */
194 #define IPPROTO_ICMPV6 58 /* ICMP6 */
195 #define IPPROTO_NONE 59 /* IP6 no next header */
196 #define IPPROTO_DSTOPTS 60 /* IP6 destination option */
197 #define IPPROTO_AHIP 61 /* any host internal protocol */
198 #define IPPROTO_CFTP 62 /* CFTP */
199 #define IPPROTO_HELLO 63 /* "hello" routing protocol */
200 #define IPPROTO_SATEXPAK 64 /* SATNET/Backroom EXPAK */
201 #define IPPROTO_KRYPTOLAN 65 /* Kryptolan */
202 #define IPPROTO_RVD 66 /* Remote Virtual Disk */
203 #define IPPROTO_IPPC 67 /* Pluribus Packet Core */
204 #define IPPROTO_ADFS 68 /* Any distributed FS */
205 #define IPPROTO_SATMON 69 /* Satnet Monitoring */
206 #define IPPROTO_VISA 70 /* VISA Protocol */
207 #define IPPROTO_IPCV 71 /* Packet Core Utility */
208 #define IPPROTO_CPNX 72 /* Comp. Prot. Net. Executive */
209 #define IPPROTO_CPHB 73 /* Comp. Prot. HeartBeat */
210 #define IPPROTO_WSN 74 /* Wang Span Network */
211 #define IPPROTO_PVP 75 /* Packet Video Protocol */
212 #define IPPROTO_BRSATMON 76 /* BackRoom SATNET Monitoring */
213 #define IPPROTO_ND 77 /* Sun net disk proto (temp.) */
214 #define IPPROTO_WBMON 78 /* WIDEBAND Monitoring */
215 #define IPPROTO_WBEXPAK 79 /* WIDEBAND EXPAK */
216 #define IPPROTO_EON 80 /* ISO cnlp */
217 #define IPPROTO_VMTP 81 /* VMTP */
218 #define IPPROTO_SVMTP 82 /* Secure VMTP */
219 #define IPPROTO_VINES 83 /* Banyon VINES */
220 #define IPPROTO_TTP 84 /* TTP */
221 #define IPPROTO_IGP 85 /* NSFNET-IGP */
222 #define IPPROTO_DGP 86 /* dissimilar gateway prot. */
223 #define IPPROTO_TCF 87 /* TCF */
224 #define IPPROTO_IGRP 88 /* Cisco/GXS IGRP */
225 #define IPPROTO_OSPFIGP 89 /* OSPFIGP */
226 #define IPPROTO_SRPC 90 /* Strite RPC protocol */
227 #define IPPROTO_LARP 91 /* Locus Address Resoloution */
228 #define IPPROTO_MTP 92 /* Multicast Transport */
229 #define IPPROTO_AX25 93 /* AX.25 Frames */
230 #define IPPROTO_IPEIP 94 /* IP encapsulated in IP */
231 #define IPPROTO_MICP 95 /* Mobile Int.ing control */
232 #define IPPROTO_SCCSP 96 /* Semaphore Comm. security */
233 #define IPPROTO_ETHERIP 97 /* Ethernet IP encapsulation */
234 #define IPPROTO_ENCAP 98 /* encapsulation header */
235 #define IPPROTO_APES 99 /* any private encr. scheme */
236 #define IPPROTO_GMTP 100 /* GMTP*/
237 #define IPPROTO_IPCOMP 108 /* payload compression (IPComp) */
238 #define IPPROTO_SCTP 132 /* SCTP */
239 /* 101-254: Partly Unassigned */
240 #define IPPROTO_PIM 103 /* Protocol Independent Mcast */
241 #define IPPROTO_CARP 112 /* CARP */
242 #define IPPROTO_PGM 113 /* PGM */
243 #define IPPROTO_PFSYNC 240 /* PFSYNC */
244 /* 255: Reserved */
245 /* BSD Private, local use, namespace incursion, no longer used */
246 #define IPPROTO_OLD_DIVERT 254 /* OLD divert pseudo-proto */
247 #define IPPROTO_MAX 256
248
249 /* last return value of *_input(), meaning "all job for this pkt is done". */
250 #define IPPROTO_DONE 257
251
252 /* Only used internally, so can be outside the range of valid IP protocols. */
253 #define IPPROTO_DIVERT 258 /* divert pseudo-protocol */
254
255 /*
256 * Defined to avoid confusion. The master value is defined by
257 * PROTO_SPACER in sys/protosw.h.
258 */
259 #define IPPROTO_SPACER 32767 /* spacer for loadable protos */
260
261 /*
262 * Local port number conventions:
263 *
264 * When a user does a bind(2) or connect(2) with a port number of zero,
265 * a non-conflicting local port address is chosen.
266 * The default range is IPPORT_HIFIRSTAUTO through
267 * IPPORT_HILASTAUTO, although that is settable by sysctl.
268 *
269 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
270 * default assignment range.
271 *
272 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
273 *
274 * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
275 * into the "high" range. These are reserved for client outbound connections
276 * which do not want to be filtered by any firewalls.
277 *
278 * The value IP_PORTRANGE_LOW changes the range to the "low" are
279 * that is (by convention) restricted to privileged processes. This
280 * convention is based on "vouchsafe" principles only. It is only secure
281 * if you trust the remote host to restrict these ports.
282 *
283 * The default range of ports and the high range can be changed by
284 * sysctl(3). (net.inet.ip.port{hi,low}{first,last}_auto)
285 *
286 * Changing those values has bad security implications if you are
287 * using a stateless firewall that is allowing packets outside of that
288 * range in order to allow transparent outgoing connections.
289 *
290 * Such a firewall configuration will generally depend on the use of these
291 * default values. If you change them, you may find your Security
292 * Administrator looking for you with a heavy object.
293 *
294 * For a slightly more orthodox text view on this:
295 *
296 * ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
297 *
298 * port numbers are divided into three ranges:
299 *
300 * 0 - 1023 Well Known Ports
301 * 1024 - 49151 Registered Ports
302 * 49152 - 65535 Dynamic and/or Private Ports
303 *
304 */
305
306 /*
307 * Ports < IPPORT_RESERVED are reserved for
308 * privileged processes (e.g. root). (IP_PORTRANGE_LOW)
309 */
310 #define IPPORT_RESERVED 1024
311
312 /*
313 * Default local port range, used by IP_PORTRANGE_DEFAULT
314 */
315 #define IPPORT_EPHEMERALFIRST 10000
316 #define IPPORT_EPHEMERALLAST 65535
317
318 /*
319 * Dynamic port range, used by IP_PORTRANGE_HIGH.
320 */
321 #define IPPORT_HIFIRSTAUTO 49152
322 #define IPPORT_HILASTAUTO 65535
323
324 /*
325 * Scanning for a free reserved port return a value below IPPORT_RESERVED,
326 * but higher than IPPORT_RESERVEDSTART. Traditionally the start value was
327 * 512, but that conflicts with some well-known-services that firewalls may
328 * have a fit if we use.
329 */
330 #define IPPORT_RESERVEDSTART 600
331
332 #define IPPORT_MAX 65535
333
334 /*
335 * Definitions of bits in internet address integers.
336 * On subnets, the decomposition of addresses to host and net parts
337 * is done according to subnet mask, not the masks here.
338 */
339 #define IN_CLASSA(i) (((u_int32_t)(i) & 0x80000000) == 0)
340 #define IN_CLASSA_NET 0xff000000
341 #define IN_CLASSA_NSHIFT 24
342 #define IN_CLASSA_HOST 0x00ffffff
343 #define IN_CLASSA_MAX 128
344
345 #define IN_CLASSB(i) (((u_int32_t)(i) & 0xc0000000) == 0x80000000)
346 #define IN_CLASSB_NET 0xffff0000
347 #define IN_CLASSB_NSHIFT 16
348 #define IN_CLASSB_HOST 0x0000ffff
349 #define IN_CLASSB_MAX 65536
350
351 #define IN_CLASSC(i) (((u_int32_t)(i) & 0xe0000000) == 0xc0000000)
352 #define IN_CLASSC_NET 0xffffff00
353 #define IN_CLASSC_NSHIFT 8
354 #define IN_CLASSC_HOST 0x000000ff
355
356 #define IN_CLASSD(i) (((u_int32_t)(i) & 0xf0000000) == 0xe0000000)
357 #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */
358 #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */
359 #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */
360 #define IN_MULTICAST(i) IN_CLASSD(i)
361
362 #define IN_EXPERIMENTAL(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
363 #define IN_BADCLASS(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
364
365 #define IN_LINKLOCAL(i) (((u_int32_t)(i) & 0xffff0000) == 0xa9fe0000)
366 #define IN_LOOPBACK(i) (((u_int32_t)(i) & 0xff000000) == 0x7f000000)
367 #define IN_ZERONET(i) (((u_int32_t)(i) & 0xff000000) == 0)
368
369 #define IN_PRIVATE(i) ((((u_int32_t)(i) & 0xff000000) == 0x0a000000) || \
370 (((u_int32_t)(i) & 0xfff00000) == 0xac100000) || \
371 (((u_int32_t)(i) & 0xffff0000) == 0xc0a80000))
372
373 #define IN_LOCAL_GROUP(i) (((u_int32_t)(i) & 0xffffff00) == 0xe0000000)
374
375 #define IN_ANY_LOCAL(i) (IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i))
376
377 #define INADDR_LOOPBACK (u_int32_t)0x7f000001
378 #ifndef _KERNEL
379 #define INADDR_NONE 0xffffffff /* -1 return */
380 #endif
381
382 #define INADDR_UNSPEC_GROUP (u_int32_t)0xe0000000 /* 224.0.0.0 */
383 #define INADDR_ALLHOSTS_GROUP (u_int32_t)0xe0000001 /* 224.0.0.1 */
384 #define INADDR_ALLRTRS_GROUP (u_int32_t)0xe0000002 /* 224.0.0.2 */
385 #define INADDR_ALLRPTS_GROUP (u_int32_t)0xe0000016 /* 224.0.0.22, IGMPv3 */
386 #define INADDR_CARP_GROUP (u_int32_t)0xe0000012 /* 224.0.0.18 */
387 #define INADDR_PFSYNC_GROUP (u_int32_t)0xe00000f0 /* 224.0.0.240 */
388 #define INADDR_ALLMDNS_GROUP (u_int32_t)0xe00000fb /* 224.0.0.251 */
389 #define INADDR_MAX_LOCAL_GROUP (u_int32_t)0xe00000ff /* 224.0.0.255 */
390
391 #define IN_LOOPBACKNET 127 /* official! */
392
393 /*
394 * Options for use with [gs]etsockopt at the IP level.
395 * First word of comment is data type; bool is stored in int.
396 */
397 #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */
398 #define IP_HDRINCL 2 /* int; header is included with data */
399 #define IP_TOS 3 /* int; IP type of service and preced. */
400 #define IP_TTL 4 /* int; IP time to live */
401 #define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */
402 #define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */
403 #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */
404 #define IP_SENDSRCADDR IP_RECVDSTADDR /* cmsg_type to set src addr */
405 #define IP_RETOPTS 8 /* ip_opts; set/get IP options */
406 #define IP_MULTICAST_IF 9 /* struct in_addr *or* struct ip_mreqn;
407 * set/get IP multicast i/f */
408 #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */
409 #define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */
410 #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */
411 #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */
412 #define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */
413 #define IP_RSVP_ON 15 /* enable RSVP in kernel */
414 #define IP_RSVP_OFF 16 /* disable RSVP in kernel */
415 #define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */
416 #define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */
417 #define IP_PORTRANGE 19 /* int; range to choose for unspec port */
418 #define IP_RECVIF 20 /* bool; receive reception if w/dgram */
419 /* for IPSEC */
420 #define IP_IPSEC_POLICY 21 /* int; set/get security policy */
421 #define IP_FAITH 22 /* bool; accept FAITH'ed connections */
422
423 #define IP_ONESBCAST 23 /* bool: send all-ones broadcast */
424 #define IP_BINDANY 24 /* bool: allow bind to any address */
425
426 #define IP_FW_TABLE_ADD 40 /* add entry */
427 #define IP_FW_TABLE_DEL 41 /* delete entry */
428 #define IP_FW_TABLE_FLUSH 42 /* flush table */
429 #define IP_FW_TABLE_GETSIZE 43 /* get table size */
430 #define IP_FW_TABLE_LIST 44 /* list table contents */
431
432 #define IP_FW_ADD 50 /* add a firewall rule to chain */
433 #define IP_FW_DEL 51 /* delete a firewall rule from chain */
434 #define IP_FW_FLUSH 52 /* flush firewall rule chain */
435 #define IP_FW_ZERO 53 /* clear single/all firewall counter(s) */
436 #define IP_FW_GET 54 /* get entire firewall rule chain */
437 #define IP_FW_RESETLOG 55 /* reset logging counters */
438
439 #define IP_FW_NAT_CFG 56 /* add/config a nat rule */
440 #define IP_FW_NAT_DEL 57 /* delete a nat rule */
441 #define IP_FW_NAT_GET_CONFIG 58 /* get configuration of a nat rule */
442 #define IP_FW_NAT_GET_LOG 59 /* get log of a nat rule */
443
444 #define IP_DUMMYNET_CONFIGURE 60 /* add/configure a dummynet pipe */
445 #define IP_DUMMYNET_DEL 61 /* delete a dummynet pipe from chain */
446 #define IP_DUMMYNET_FLUSH 62 /* flush dummynet */
447 #define IP_DUMMYNET_GET 64 /* get entire dummynet pipes */
448
449 #define IP_RECVTTL 65 /* bool; receive IP TTL w/dgram */
450 #define IP_MINTTL 66 /* minimum TTL for packet or drop */
451 #define IP_DONTFRAG 67 /* don't fragment packet */
452
453 /* IPv4 Source Filter Multicast API [RFC3678] */
454 #define IP_ADD_SOURCE_MEMBERSHIP 70 /* join a source-specific group */
455 #define IP_DROP_SOURCE_MEMBERSHIP 71 /* drop a single source */
456 #define IP_BLOCK_SOURCE 72 /* block a source */
457 #define IP_UNBLOCK_SOURCE 73 /* unblock a source */
458
459 /* The following option is private; do not use it from user applications. */
460 #define IP_MSFILTER 74 /* set/get filter list */
461
462 /* Protocol Independent Multicast API [RFC3678] */
463 #define MCAST_JOIN_GROUP 80 /* join an any-source group */
464 #define MCAST_LEAVE_GROUP 81 /* leave all sources for group */
465 #define MCAST_JOIN_SOURCE_GROUP 82 /* join a source-specific group */
466 #define MCAST_LEAVE_SOURCE_GROUP 83 /* leave a single source */
467 #define MCAST_BLOCK_SOURCE 84 /* block a source */
468 #define MCAST_UNBLOCK_SOURCE 85 /* unblock a source */
469
470 /*
471 * Defaults and limits for options
472 */
473 #define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */
474 #define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
475
476 /*
477 * The imo_membership vector for each socket is now dynamically allocated at
478 * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized
479 * according to a power-of-two increment.
480 */
481 #define IP_MIN_MEMBERSHIPS 31
482 #define IP_MAX_MEMBERSHIPS 4095
483 #define IP_MAX_SOURCE_FILTER 1024 /* XXX to be unused */
484
485 /*
486 * Default resource limits for IPv4 multicast source filtering.
487 * These may be modified by sysctl.
488 */
489 #define IP_MAX_GROUP_SRC_FILTER 512 /* sources per group */
490 #define IP_MAX_SOCK_SRC_FILTER 128 /* sources per socket/group */
491 #define IP_MAX_SOCK_MUTE_FILTER 128 /* XXX no longer used */
492
493 /*
494 * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
495 */
496 struct ip_mreq {
497 struct in_addr imr_multiaddr; /* IP multicast address of group */
498 struct in_addr imr_interface; /* local IP address of interface */
499 };
500
501 /*
502 * Modified argument structure for IP_MULTICAST_IF, obtained from Linux.
503 * This is used to specify an interface index for multicast sends, as
504 * the IPv4 legacy APIs do not support this (unless IP_SENDIF is available).
505 */
506 struct ip_mreqn {
507 struct in_addr imr_multiaddr; /* IP multicast address of group */
508 struct in_addr imr_address; /* local IP address of interface */
509 int imr_ifindex; /* Interface index; cast to uint32_t */
510 };
511
512 /*
513 * Argument structure for IPv4 Multicast Source Filter APIs. [RFC3678]
514 */
515 struct ip_mreq_source {
516 struct in_addr imr_multiaddr; /* IP multicast address of group */
517 struct in_addr imr_sourceaddr; /* IP address of source */
518 struct in_addr imr_interface; /* local IP address of interface */
519 };
520
521 /*
522 * Argument structures for Protocol-Independent Multicast Source
523 * Filter APIs. [RFC3678]
524 */
525 struct group_req {
526 uint32_t gr_interface; /* interface index */
527 struct sockaddr_storage gr_group; /* group address */
528 };
529
530 struct group_source_req {
531 uint32_t gsr_interface; /* interface index */
532 struct sockaddr_storage gsr_group; /* group address */
533 struct sockaddr_storage gsr_source; /* source address */
534 };
535
536 #ifndef __MSFILTERREQ_DEFINED
537 #define __MSFILTERREQ_DEFINED
538 /*
539 * The following structure is private; do not use it from user applications.
540 * It is used to communicate IP_MSFILTER/IPV6_MSFILTER information between
541 * the RFC 3678 libc functions and the kernel.
542 */
543 struct __msfilterreq {
544 uint32_t msfr_ifindex; /* interface index */
545 uint32_t msfr_fmode; /* filter mode for group */
546 uint32_t msfr_nsrcs; /* # of sources in msfr_srcs */
547 struct sockaddr_storage msfr_group; /* group address */
548 struct sockaddr_storage *msfr_srcs; /* pointer to the first member
549 * of a contiguous array of
550 * sources to filter in full.
551 */
552 };
553 #endif
554
555 struct sockaddr;
556
557 /*
558 * Advanced (Full-state) APIs [RFC3678]
559 * The RFC specifies uint_t for the 6th argument to [sg]etsourcefilter().
560 * We use uint32_t here to be consistent.
561 */
562 int setipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t,
563 uint32_t, struct in_addr *);
564 int getipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t *,
565 uint32_t *, struct in_addr *);
566 int setsourcefilter(int, uint32_t, struct sockaddr *, socklen_t,
567 uint32_t, uint32_t, struct sockaddr_storage *);
568 int getsourcefilter(int, uint32_t, struct sockaddr *, socklen_t,
569 uint32_t *, uint32_t *, struct sockaddr_storage *);
570
571 /*
572 * Filter modes; also used to represent per-socket filter mode internally.
573 */
574 #define MCAST_UNDEFINED 0 /* fmode: not yet defined */
575 #define MCAST_INCLUDE 1 /* fmode: include these source(s) */
576 #define MCAST_EXCLUDE 2 /* fmode: exclude these source(s) */
577
578 /*
579 * Argument for IP_PORTRANGE:
580 * - which range to search when port is unspecified at bind() or connect()
581 */
582 #define IP_PORTRANGE_DEFAULT 0 /* default range */
583 #define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
584 #define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
585
586 /*
587 * Definitions for inet sysctl operations.
588 *
589 * Third level is protocol number.
590 * Fourth level is desired variable within that protocol.
591 */
592 #define IPPROTO_MAXID (IPPROTO_AH + 1) /* don't list to IPPROTO_MAX */
593
594 #define CTL_IPPROTO_NAMES { \
595 { "ip", CTLTYPE_NODE }, \
596 { "icmp", CTLTYPE_NODE }, \
597 { "igmp", CTLTYPE_NODE }, \
598 { "ggp", CTLTYPE_NODE }, \
599 { 0, 0 }, \
600 { 0, 0 }, \
601 { "tcp", CTLTYPE_NODE }, \
602 { 0, 0 }, \
603 { "egp", CTLTYPE_NODE }, \
604 { 0, 0 }, \
605 { 0, 0 }, \
606 { 0, 0 }, \
607 { "pup", CTLTYPE_NODE }, \
608 { 0, 0 }, \
609 { 0, 0 }, \
610 { 0, 0 }, \
611 { 0, 0 }, \
612 { "udp", CTLTYPE_NODE }, \
613 { 0, 0 }, \
614 { 0, 0 }, \
615 { 0, 0 }, \
616 { 0, 0 }, \
617 { "idp", CTLTYPE_NODE }, \
618 { 0, 0 }, \
619 { 0, 0 }, \
620 { 0, 0 }, \
621 { 0, 0 }, \
622 { 0, 0 }, \
623 { 0, 0 }, \
624 { 0, 0 }, \
625 { 0, 0 }, \
626 { 0, 0 }, \
627 { 0, 0 }, \
628 { 0, 0 }, \
629 { 0, 0 }, \
630 { 0, 0 }, \
631 { 0, 0 }, \
632 { 0, 0 }, \
633 { 0, 0 }, \
634 { 0, 0 }, \
635 { 0, 0 }, \
636 { 0, 0 }, \
637 { 0, 0 }, \
638 { 0, 0 }, \
639 { 0, 0 }, \
640 { 0, 0 }, \
641 { 0, 0 }, \
642 { 0, 0 }, \
643 { 0, 0 }, \
644 { 0, 0 }, \
645 { 0, 0 }, \
646 { "ipsec", CTLTYPE_NODE }, \
647 { 0, 0 }, \
648 { 0, 0 }, \
649 { 0, 0 }, \
650 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
651 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
652 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
653 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
654 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
655 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
656 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
657 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
658 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
659 { 0, 0 }, \
660 { 0, 0 }, \
661 { 0, 0 }, \
662 { "pim", CTLTYPE_NODE }, \
663 }
664
665 /*
666 * Names for IP sysctl objects
667 */
668 #define IPCTL_FORWARDING 1 /* act as router */
669 #define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */
670 #define IPCTL_DEFTTL 3 /* default TTL */
671 #ifdef notyet
672 #define IPCTL_DEFMTU 4 /* default MTU */
673 #endif
674 #define IPCTL_RTEXPIRE 5 /* cloned route expiration time */
675 #define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */
676 #define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */
677 #define IPCTL_SOURCEROUTE 8 /* may perform source routes */
678 #define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */
679 #define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */
680 #define IPCTL_INTRQDROPS 11 /* number of netisr q drops */
681 #define IPCTL_STATS 12 /* ipstat structure */
682 #define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */
683 #define IPCTL_FASTFORWARDING 14 /* use fast IP forwarding code */
684 #define IPCTL_KEEPFAITH 15 /* FAITH IPv4->IPv6 translater ctl */
685 #define IPCTL_GIF_TTL 16 /* default TTL for gif encap packet */
686 #define IPCTL_MAXID 17
687
688 #define IPCTL_NAMES { \
689 { 0, 0 }, \
690 { "forwarding", CTLTYPE_INT }, \
691 { "redirect", CTLTYPE_INT }, \
692 { "ttl", CTLTYPE_INT }, \
693 { "mtu", CTLTYPE_INT }, \
694 { "rtexpire", CTLTYPE_INT }, \
695 { "rtminexpire", CTLTYPE_INT }, \
696 { "rtmaxcache", CTLTYPE_INT }, \
697 { "sourceroute", CTLTYPE_INT }, \
698 { "directed-broadcast", CTLTYPE_INT }, \
699 { "intr-queue-maxlen", CTLTYPE_INT }, \
700 { "intr-queue-drops", CTLTYPE_INT }, \
701 { "stats", CTLTYPE_STRUCT }, \
702 { "accept_sourceroute", CTLTYPE_INT }, \
703 { "fastforwarding", CTLTYPE_INT }, \
704 }
705
706 #endif /* __BSD_VISIBLE */
707
708 #ifdef _KERNEL
709
710 struct ifnet; struct mbuf; /* forward declarations for Standard C */
711
712 int in_broadcast(struct in_addr, struct ifnet *);
713 int in_canforward(struct in_addr);
714 int in_localaddr(struct in_addr);
715 int in_localip(struct in_addr);
716 int inet_aton(const char *, struct in_addr *); /* in libkern */
717 char *inet_ntoa(struct in_addr); /* in libkern */
718 char *inet_ntoa_r(struct in_addr ina, char *buf); /* in libkern */
719 void in_ifdetach(struct ifnet *);
720
721 #define in_hosteq(s, t) ((s).s_addr == (t).s_addr)
722 #define in_nullhost(x) ((x).s_addr == INADDR_ANY)
723 #define in_allhosts(x) ((x).s_addr == htonl(INADDR_ALLHOSTS_GROUP))
724
725 #define satosin(sa) ((struct sockaddr_in *)(sa))
726 #define sintosa(sin) ((struct sockaddr *)(sin))
727 #define ifatoia(ifa) ((struct in_ifaddr *)(ifa))
728
729 #endif /* _KERNEL */
730
731 /* INET6 stuff */
732 #if __POSIX_VISIBLE >= 200112
733 #define __KAME_NETINET_IN_H_INCLUDED_
734 #include <netinet6/in6.h>
735 #undef __KAME_NETINET_IN_H_INCLUDED_
736 #endif
737
738 #endif /* !_NETINET_IN_H_*/
Cache object: 5fa144293a0650b13a4675e68fa27cc5
|