source: rtems-libbsd/freebsd/sys/netinet/in.h @ 66659ff

4.1155-freebsd-126-freebsd-12freebsd-9.3
Last change on this file since 66659ff was 66659ff, checked in by Sebastian Huber <sebastian.huber@…>, on 11/06/13 at 15:20:21

Update to FreeBSD 9.2
  • Property mode set to 100644
File size: 27.9 KB
Line 
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 * $FreeBSD$
31 */
32
33#ifndef _NETINET_IN_H_
34#define _NETINET_IN_H_
35
36#include <sys/cdefs.h>
37#include <rtems/bsd/sys/_types.h>
38#ifndef __rtems__
39#include <machine/endian.h>
40#else /* __rtems__ */
41#include <machine/rtems-bsd-endian.h>
42#endif /* __rtems__ */
43
44/* Protocols common to RFC 1700, POSIX, and X/Open. */
45#define IPPROTO_IP              0               /* dummy for IP */
46#define IPPROTO_ICMP            1               /* control message protocol */
47#define IPPROTO_TCP             6               /* tcp */
48#define IPPROTO_UDP             17              /* user datagram protocol */
49
50#define INADDR_ANY              (u_int32_t)0x00000000
51#define INADDR_BROADCAST        (u_int32_t)0xffffffff   /* must be masked */
52
53#ifndef _UINT8_T_DECLARED
54typedef __uint8_t               uint8_t;
55#define _UINT8_T_DECLARED
56#endif
57
58#ifndef _UINT16_T_DECLARED
59typedef __uint16_t              uint16_t;
60#define _UINT16_T_DECLARED
61#endif
62
63#ifndef _UINT32_T_DECLARED
64typedef __uint32_t              uint32_t;
65#define _UINT32_T_DECLARED
66#endif
67
68#ifndef _IN_ADDR_T_DECLARED
69typedef uint32_t                in_addr_t;
70#define _IN_ADDR_T_DECLARED
71#endif
72
73#ifndef _IN_PORT_T_DECLARED
74typedef uint16_t                in_port_t;
75#define _IN_PORT_T_DECLARED
76#endif
77
78#ifndef _SA_FAMILY_T_DECLARED
79typedef __sa_family_t           sa_family_t;
80#define _SA_FAMILY_T_DECLARED
81#endif
82
83/* Internet address (a structure for historical reasons). */
84#ifndef _STRUCT_IN_ADDR_DECLARED
85struct in_addr {
86        in_addr_t s_addr;
87};
88#define _STRUCT_IN_ADDR_DECLARED
89#endif
90
91#ifndef _SOCKLEN_T_DECLARED
92typedef __socklen_t     socklen_t;
93#define _SOCKLEN_T_DECLARED
94#endif
95
96#include <sys/_sockaddr_storage.h>
97
98/* Socket address, internet style. */
99struct sockaddr_in {
100        uint8_t sin_len;
101        sa_family_t     sin_family;
102        in_port_t       sin_port;
103        struct  in_addr sin_addr;
104        char    sin_zero[8];
105};
106
107#if !defined(_KERNEL) && __BSD_VISIBLE
108
109#ifndef _BYTEORDER_PROTOTYPED
110#define _BYTEORDER_PROTOTYPED
111__BEGIN_DECLS
112uint32_t        htonl(uint32_t);
113uint16_t        htons(uint16_t);
114uint32_t        ntohl(uint32_t);
115uint16_t        ntohs(uint16_t);
116__END_DECLS
117#endif
118
119#ifndef _BYTEORDER_FUNC_DEFINED
120#define _BYTEORDER_FUNC_DEFINED
121#define htonl(x)        __htonl(x)
122#define htons(x)        __htons(x)
123#define ntohl(x)        __ntohl(x)
124#define ntohs(x)        __ntohs(x)
125#endif
126
127#endif /* !_KERNEL && __BSD_VISIBLE */
128
129#if __POSIX_VISIBLE >= 200112
130#define IPPROTO_IPV6            41              /* IP6 header */
131#define IPPROTO_RAW             255             /* raw IP packet */
132#define INET_ADDRSTRLEN         16
133#endif
134
135#if __BSD_VISIBLE
136/*
137 * Constants and structures defined by the internet system,
138 * Per RFC 790, September 1981, and numerous additions.
139 */
140
141/*
142 * Protocols (RFC 1700)
143 */
144#define IPPROTO_HOPOPTS         0               /* IP6 hop-by-hop options */
145#define IPPROTO_IGMP            2               /* group mgmt protocol */
146#define IPPROTO_GGP             3               /* gateway^2 (deprecated) */
147#define IPPROTO_IPV4            4               /* IPv4 encapsulation */
148#define IPPROTO_IPIP            IPPROTO_IPV4    /* for compatibility */
149#define IPPROTO_ST              7               /* Stream protocol II */
150#define IPPROTO_EGP             8               /* exterior gateway protocol */
151#define IPPROTO_PIGP            9               /* private interior gateway */
152#define IPPROTO_RCCMON          10              /* BBN RCC Monitoring */
153#define IPPROTO_NVPII           11              /* network voice protocol*/
154#define IPPROTO_PUP             12              /* pup */
155#define IPPROTO_ARGUS           13              /* Argus */
156#define IPPROTO_EMCON           14              /* EMCON */
157#define IPPROTO_XNET            15              /* Cross Net Debugger */
158#define IPPROTO_CHAOS           16              /* Chaos*/
159#define IPPROTO_MUX             18              /* Multiplexing */
160#define IPPROTO_MEAS            19              /* DCN Measurement Subsystems */
161#define IPPROTO_HMP             20              /* Host Monitoring */
162#define IPPROTO_PRM             21              /* Packet Radio Measurement */
163#define IPPROTO_IDP             22              /* xns idp */
164#define IPPROTO_TRUNK1          23              /* Trunk-1 */
165#define IPPROTO_TRUNK2          24              /* Trunk-2 */
166#define IPPROTO_LEAF1           25              /* Leaf-1 */
167#define IPPROTO_LEAF2           26              /* Leaf-2 */
168#define IPPROTO_RDP             27              /* Reliable Data */
169#define IPPROTO_IRTP            28              /* Reliable Transaction */
170#define IPPROTO_TP              29              /* tp-4 w/ class negotiation */
171#define IPPROTO_BLT             30              /* Bulk Data Transfer */
172#define IPPROTO_NSP             31              /* Network Services */
173#define IPPROTO_INP             32              /* Merit Internodal */
174#define IPPROTO_SEP             33              /* Sequential Exchange */
175#define IPPROTO_3PC             34              /* Third Party Connect */
176#define IPPROTO_IDPR            35              /* InterDomain Policy Routing */
177#define IPPROTO_XTP             36              /* XTP */
178#define IPPROTO_DDP             37              /* Datagram Delivery */
179#define IPPROTO_CMTP            38              /* Control Message Transport */
180#define IPPROTO_TPXX            39              /* TP++ Transport */
181#define IPPROTO_IL              40              /* IL transport protocol */
182#define IPPROTO_SDRP            42              /* Source Demand Routing */
183#define IPPROTO_ROUTING         43              /* IP6 routing header */
184#define IPPROTO_FRAGMENT        44              /* IP6 fragmentation header */
185#define IPPROTO_IDRP            45              /* InterDomain Routing*/
186#define IPPROTO_RSVP            46              /* resource reservation */
187#define IPPROTO_GRE             47              /* General Routing Encap. */
188#define IPPROTO_MHRP            48              /* Mobile Host Routing */
189#define IPPROTO_BHA             49              /* BHA */
190#define IPPROTO_ESP             50              /* IP6 Encap Sec. Payload */
191#define IPPROTO_AH              51              /* IP6 Auth Header */
192#define IPPROTO_INLSP           52              /* Integ. Net Layer Security */
193#define IPPROTO_SWIPE           53              /* IP with encryption */
194#define IPPROTO_NHRP            54              /* Next Hop Resolution */
195#define IPPROTO_MOBILE          55              /* IP Mobility */
196#define IPPROTO_TLSP            56              /* Transport Layer Security */
197#define IPPROTO_SKIP            57              /* SKIP */
198#define IPPROTO_ICMPV6          58              /* ICMP6 */
199#define IPPROTO_NONE            59              /* IP6 no next header */
200#define IPPROTO_DSTOPTS         60              /* IP6 destination option */
201#define IPPROTO_AHIP            61              /* any host internal protocol */
202#define IPPROTO_CFTP            62              /* CFTP */
203#define IPPROTO_HELLO           63              /* "hello" routing protocol */
204#define IPPROTO_SATEXPAK        64              /* SATNET/Backroom EXPAK */
205#define IPPROTO_KRYPTOLAN       65              /* Kryptolan */
206#define IPPROTO_RVD             66              /* Remote Virtual Disk */
207#define IPPROTO_IPPC            67              /* Pluribus Packet Core */
208#define IPPROTO_ADFS            68              /* Any distributed FS */
209#define IPPROTO_SATMON          69              /* Satnet Monitoring */
210#define IPPROTO_VISA            70              /* VISA Protocol */
211#define IPPROTO_IPCV            71              /* Packet Core Utility */
212#define IPPROTO_CPNX            72              /* Comp. Prot. Net. Executive */
213#define IPPROTO_CPHB            73              /* Comp. Prot. HeartBeat */
214#define IPPROTO_WSN             74              /* Wang Span Network */
215#define IPPROTO_PVP             75              /* Packet Video Protocol */
216#define IPPROTO_BRSATMON        76              /* BackRoom SATNET Monitoring */
217#define IPPROTO_ND              77              /* Sun net disk proto (temp.) */
218#define IPPROTO_WBMON           78              /* WIDEBAND Monitoring */
219#define IPPROTO_WBEXPAK         79              /* WIDEBAND EXPAK */
220#define IPPROTO_EON             80              /* ISO cnlp */
221#define IPPROTO_VMTP            81              /* VMTP */
222#define IPPROTO_SVMTP           82              /* Secure VMTP */
223#define IPPROTO_VINES           83              /* Banyon VINES */
224#define IPPROTO_TTP             84              /* TTP */
225#define IPPROTO_IGP             85              /* NSFNET-IGP */
226#define IPPROTO_DGP             86              /* dissimilar gateway prot. */
227#define IPPROTO_TCF             87              /* TCF */
228#define IPPROTO_IGRP            88              /* Cisco/GXS IGRP */
229#define IPPROTO_OSPFIGP         89              /* OSPFIGP */
230#define IPPROTO_SRPC            90              /* Strite RPC protocol */
231#define IPPROTO_LARP            91              /* Locus Address Resoloution */
232#define IPPROTO_MTP             92              /* Multicast Transport */
233#define IPPROTO_AX25            93              /* AX.25 Frames */
234#define IPPROTO_IPEIP           94              /* IP encapsulated in IP */
235#define IPPROTO_MICP            95              /* Mobile Int.ing control */
236#define IPPROTO_SCCSP           96              /* Semaphore Comm. security */
237#define IPPROTO_ETHERIP         97              /* Ethernet IP encapsulation */
238#define IPPROTO_ENCAP           98              /* encapsulation header */
239#define IPPROTO_APES            99              /* any private encr. scheme */
240#define IPPROTO_GMTP            100             /* GMTP*/
241#define IPPROTO_IPCOMP          108             /* payload compression (IPComp) */
242#define IPPROTO_SCTP            132             /* SCTP */
243#define IPPROTO_MH              135             /* IPv6 Mobility Header */
244/* 101-254: Partly Unassigned */
245#define IPPROTO_PIM             103             /* Protocol Independent Mcast */
246#define IPPROTO_CARP            112             /* CARP */
247#define IPPROTO_PGM             113             /* PGM */
248#define IPPROTO_MPLS            137             /* MPLS-in-IP */
249#define IPPROTO_PFSYNC          240             /* PFSYNC */
250/* 255: Reserved */
251/* BSD Private, local use, namespace incursion, no longer used */
252#define IPPROTO_OLD_DIVERT      254             /* OLD divert pseudo-proto */
253#define IPPROTO_MAX             256
254
255/* last return value of *_input(), meaning "all job for this pkt is done".  */
256#define IPPROTO_DONE            257
257
258/* Only used internally, so can be outside the range of valid IP protocols. */
259#define IPPROTO_DIVERT          258             /* divert pseudo-protocol */
260#define IPPROTO_SEND            259             /* SeND pseudo-protocol */
261
262/*
263 * Defined to avoid confusion.  The master value is defined by
264 * PROTO_SPACER in sys/protosw.h.
265 */
266#define IPPROTO_SPACER          32767           /* spacer for loadable protos */
267
268/*
269 * Local port number conventions:
270 *
271 * When a user does a bind(2) or connect(2) with a port number of zero,
272 * a non-conflicting local port address is chosen.
273 * The default range is IPPORT_HIFIRSTAUTO through
274 * IPPORT_HILASTAUTO, although that is settable by sysctl.
275 *
276 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
277 * default assignment range.
278 *
279 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
280 *
281 * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
282 * into the "high" range.  These are reserved for client outbound connections
283 * which do not want to be filtered by any firewalls.
284 *
285 * The value IP_PORTRANGE_LOW changes the range to the "low" are
286 * that is (by convention) restricted to privileged processes.  This
287 * convention is based on "vouchsafe" principles only.  It is only secure
288 * if you trust the remote host to restrict these ports.
289 *
290 * The default range of ports and the high range can be changed by
291 * sysctl(3).  (net.inet.ip.port{hi,low}{first,last}_auto)
292 *
293 * Changing those values has bad security implications if you are
294 * using a stateless firewall that is allowing packets outside of that
295 * range in order to allow transparent outgoing connections.
296 *
297 * Such a firewall configuration will generally depend on the use of these
298 * default values.  If you change them, you may find your Security
299 * Administrator looking for you with a heavy object.
300 *
301 * For a slightly more orthodox text view on this:
302 *
303 *            ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
304 *
305 *    port numbers are divided into three ranges:
306 *
307 *                0 -  1023 Well Known Ports
308 *             1024 - 49151 Registered Ports
309 *            49152 - 65535 Dynamic and/or Private Ports
310 *
311 */
312
313/*
314 * Ports < IPPORT_RESERVED are reserved for
315 * privileged processes (e.g. root).         (IP_PORTRANGE_LOW)
316 */
317#define IPPORT_RESERVED         1024
318
319/*
320 * Default local port range, used by IP_PORTRANGE_DEFAULT
321 */
322#define IPPORT_EPHEMERALFIRST   10000
323#define IPPORT_EPHEMERALLAST    65535
324 
325/*
326 * Dynamic port range, used by IP_PORTRANGE_HIGH.
327 */
328#define IPPORT_HIFIRSTAUTO      49152
329#define IPPORT_HILASTAUTO       65535
330
331/*
332 * Scanning for a free reserved port return a value below IPPORT_RESERVED,
333 * but higher than IPPORT_RESERVEDSTART.  Traditionally the start value was
334 * 512, but that conflicts with some well-known-services that firewalls may
335 * have a fit if we use.
336 */
337#define IPPORT_RESERVEDSTART    600
338
339#define IPPORT_MAX              65535
340
341/*
342 * Definitions of bits in internet address integers.
343 * On subnets, the decomposition of addresses to host and net parts
344 * is done according to subnet mask, not the masks here.
345 */
346#define IN_CLASSA(i)            (((u_int32_t)(i) & 0x80000000) == 0)
347#define IN_CLASSA_NET           0xff000000
348#define IN_CLASSA_NSHIFT        24
349#define IN_CLASSA_HOST          0x00ffffff
350#define IN_CLASSA_MAX           128
351
352#define IN_CLASSB(i)            (((u_int32_t)(i) & 0xc0000000) == 0x80000000)
353#define IN_CLASSB_NET           0xffff0000
354#define IN_CLASSB_NSHIFT        16
355#define IN_CLASSB_HOST          0x0000ffff
356#define IN_CLASSB_MAX           65536
357
358#define IN_CLASSC(i)            (((u_int32_t)(i) & 0xe0000000) == 0xc0000000)
359#define IN_CLASSC_NET           0xffffff00
360#define IN_CLASSC_NSHIFT        8
361#define IN_CLASSC_HOST          0x000000ff
362
363#define IN_CLASSD(i)            (((u_int32_t)(i) & 0xf0000000) == 0xe0000000)
364#define IN_CLASSD_NET           0xf0000000      /* These ones aren't really */
365#define IN_CLASSD_NSHIFT        28              /* net and host fields, but */
366#define IN_CLASSD_HOST          0x0fffffff      /* routing needn't know.    */
367#define IN_MULTICAST(i)         IN_CLASSD(i)
368
369#define IN_EXPERIMENTAL(i)      (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
370#define IN_BADCLASS(i)          (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
371
372#define IN_LINKLOCAL(i)         (((u_int32_t)(i) & 0xffff0000) == 0xa9fe0000)
373#define IN_LOOPBACK(i)          (((u_int32_t)(i) & 0xff000000) == 0x7f000000)
374#define IN_ZERONET(i)           (((u_int32_t)(i) & 0xff000000) == 0)
375
376#define IN_PRIVATE(i)   ((((u_int32_t)(i) & 0xff000000) == 0x0a000000) || \
377                         (((u_int32_t)(i) & 0xfff00000) == 0xac100000) || \
378                         (((u_int32_t)(i) & 0xffff0000) == 0xc0a80000))
379
380#define IN_LOCAL_GROUP(i)       (((u_int32_t)(i) & 0xffffff00) == 0xe0000000)
381 
382#define IN_ANY_LOCAL(i)         (IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i))
383
384#define INADDR_LOOPBACK         (u_int32_t)0x7f000001
385#ifndef _KERNEL
386#define INADDR_NONE             0xffffffff              /* -1 return */
387#endif
388
389#define INADDR_UNSPEC_GROUP     (u_int32_t)0xe0000000   /* 224.0.0.0 */
390#define INADDR_ALLHOSTS_GROUP   (u_int32_t)0xe0000001   /* 224.0.0.1 */
391#define INADDR_ALLRTRS_GROUP    (u_int32_t)0xe0000002   /* 224.0.0.2 */
392#define INADDR_ALLRPTS_GROUP    (u_int32_t)0xe0000016   /* 224.0.0.22, IGMPv3 */
393#define INADDR_CARP_GROUP       (u_int32_t)0xe0000012   /* 224.0.0.18 */
394#define INADDR_PFSYNC_GROUP     (u_int32_t)0xe00000f0   /* 224.0.0.240 */
395#define INADDR_ALLMDNS_GROUP    (u_int32_t)0xe00000fb   /* 224.0.0.251 */
396#define INADDR_MAX_LOCAL_GROUP  (u_int32_t)0xe00000ff   /* 224.0.0.255 */
397
398#define IN_LOOPBACKNET          127                     /* official! */
399
400#define IN_RFC3021_MASK         (u_int32_t)0xfffffffe
401
402/*
403 * Options for use with [gs]etsockopt at the IP level.
404 * First word of comment is data type; bool is stored in int.
405 */
406#define IP_OPTIONS              1    /* buf/ip_opts; set/get IP options */
407#define IP_HDRINCL              2    /* int; header is included with data */
408#define IP_TOS                  3    /* int; IP type of service and preced. */
409#define IP_TTL                  4    /* int; IP time to live */
410#define IP_RECVOPTS             5    /* bool; receive all IP opts w/dgram */
411#define IP_RECVRETOPTS          6    /* bool; receive IP opts for response */
412#define IP_RECVDSTADDR          7    /* bool; receive IP dst addr w/dgram */
413#define IP_SENDSRCADDR          IP_RECVDSTADDR /* cmsg_type to set src addr */
414#define IP_RETOPTS              8    /* ip_opts; set/get IP options */
415#define IP_MULTICAST_IF         9    /* struct in_addr *or* struct ip_mreqn;
416                                      * set/get IP multicast i/f  */
417#define IP_MULTICAST_TTL        10   /* u_char; set/get IP multicast ttl */
418#define IP_MULTICAST_LOOP       11   /* u_char; set/get IP multicast loopback */
419#define IP_ADD_MEMBERSHIP       12   /* ip_mreq; add an IP group membership */
420#define IP_DROP_MEMBERSHIP      13   /* ip_mreq; drop an IP group membership */
421#define IP_MULTICAST_VIF        14   /* set/get IP mcast virt. iface */
422#define IP_RSVP_ON              15   /* enable RSVP in kernel */
423#define IP_RSVP_OFF             16   /* disable RSVP in kernel */
424#define IP_RSVP_VIF_ON          17   /* set RSVP per-vif socket */
425#define IP_RSVP_VIF_OFF         18   /* unset RSVP per-vif socket */
426#define IP_PORTRANGE            19   /* int; range to choose for unspec port */
427#define IP_RECVIF               20   /* bool; receive reception if w/dgram */
428/* for IPSEC */
429#define IP_IPSEC_POLICY         21   /* int; set/get security policy */
430#define IP_FAITH                22   /* bool; accept FAITH'ed connections */
431
432#define IP_ONESBCAST            23   /* bool: send all-ones broadcast */
433#define IP_BINDANY              24   /* bool: allow bind to any address */
434
435/*
436 * Options for controlling the firewall and dummynet.
437 * Historical options (from 40 to 64) will eventually be
438 * replaced by only two options, IP_FW3 and IP_DUMMYNET3.
439 */
440#define IP_FW_TABLE_ADD         40   /* add entry */
441#define IP_FW_TABLE_DEL         41   /* delete entry */
442#define IP_FW_TABLE_FLUSH       42   /* flush table */
443#define IP_FW_TABLE_GETSIZE     43   /* get table size */
444#define IP_FW_TABLE_LIST        44   /* list table contents */
445
446#define IP_FW3                  48   /* generic ipfw v.3 sockopts */
447#define IP_DUMMYNET3            49   /* generic dummynet v.3 sockopts */
448
449#define IP_FW_ADD               50   /* add a firewall rule to chain */
450#define IP_FW_DEL               51   /* delete a firewall rule from chain */
451#define IP_FW_FLUSH             52   /* flush firewall rule chain */
452#define IP_FW_ZERO              53   /* clear single/all firewall counter(s) */
453#define IP_FW_GET               54   /* get entire firewall rule chain */
454#define IP_FW_RESETLOG          55   /* reset logging counters */
455
456#define IP_FW_NAT_CFG           56   /* add/config a nat rule */
457#define IP_FW_NAT_DEL           57   /* delete a nat rule */
458#define IP_FW_NAT_GET_CONFIG    58   /* get configuration of a nat rule */
459#define IP_FW_NAT_GET_LOG       59   /* get log of a nat rule */
460
461#define IP_DUMMYNET_CONFIGURE   60   /* add/configure a dummynet pipe */
462#define IP_DUMMYNET_DEL         61   /* delete a dummynet pipe from chain */
463#define IP_DUMMYNET_FLUSH       62   /* flush dummynet */
464#define IP_DUMMYNET_GET         64   /* get entire dummynet pipes */
465
466#define IP_RECVTTL              65   /* bool; receive IP TTL w/dgram */
467#define IP_MINTTL               66   /* minimum TTL for packet or drop */
468#define IP_DONTFRAG             67   /* don't fragment packet */
469#define IP_RECVTOS              68   /* bool; receive IP TOS w/dgram */
470
471/* IPv4 Source Filter Multicast API [RFC3678] */
472#define IP_ADD_SOURCE_MEMBERSHIP        70   /* join a source-specific group */
473#define IP_DROP_SOURCE_MEMBERSHIP       71   /* drop a single source */
474#define IP_BLOCK_SOURCE                 72   /* block a source */
475#define IP_UNBLOCK_SOURCE               73   /* unblock a source */
476
477/* The following option is private; do not use it from user applications. */
478#define IP_MSFILTER                     74   /* set/get filter list */
479
480/* Protocol Independent Multicast API [RFC3678] */
481#define MCAST_JOIN_GROUP                80   /* join an any-source group */
482#define MCAST_LEAVE_GROUP               81   /* leave all sources for group */
483#define MCAST_JOIN_SOURCE_GROUP         82   /* join a source-specific group */
484#define MCAST_LEAVE_SOURCE_GROUP        83   /* leave a single source */
485#define MCAST_BLOCK_SOURCE              84   /* block a source */
486#define MCAST_UNBLOCK_SOURCE            85   /* unblock a source */
487
488/*
489 * Defaults and limits for options
490 */
491#define IP_DEFAULT_MULTICAST_TTL  1     /* normally limit m'casts to 1 hop  */
492#define IP_DEFAULT_MULTICAST_LOOP 1     /* normally hear sends if a member  */
493
494/*
495 * The imo_membership vector for each socket is now dynamically allocated at
496 * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized
497 * according to a power-of-two increment.
498 */
499#define IP_MIN_MEMBERSHIPS      31
500#define IP_MAX_MEMBERSHIPS      4095
501#define IP_MAX_SOURCE_FILTER    1024    /* XXX to be unused */
502
503/*
504 * Default resource limits for IPv4 multicast source filtering.
505 * These may be modified by sysctl.
506 */
507#define IP_MAX_GROUP_SRC_FILTER         512     /* sources per group */
508#define IP_MAX_SOCK_SRC_FILTER          128     /* sources per socket/group */
509#define IP_MAX_SOCK_MUTE_FILTER         128     /* XXX no longer used */
510
511/*
512 * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
513 */
514struct ip_mreq {
515        struct  in_addr imr_multiaddr;  /* IP multicast address of group */
516        struct  in_addr imr_interface;  /* local IP address of interface */
517};
518
519/*
520 * Modified argument structure for IP_MULTICAST_IF, obtained from Linux.
521 * This is used to specify an interface index for multicast sends, as
522 * the IPv4 legacy APIs do not support this (unless IP_SENDIF is available).
523 */
524struct ip_mreqn {
525        struct  in_addr imr_multiaddr;  /* IP multicast address of group */
526        struct  in_addr imr_address;    /* local IP address of interface */
527        int             imr_ifindex;    /* Interface index; cast to uint32_t */
528};
529
530/*
531 * Argument structure for IPv4 Multicast Source Filter APIs. [RFC3678]
532 */
533struct ip_mreq_source {
534        struct  in_addr imr_multiaddr;  /* IP multicast address of group */
535        struct  in_addr imr_sourceaddr; /* IP address of source */
536        struct  in_addr imr_interface;  /* local IP address of interface */
537};
538
539/*
540 * Argument structures for Protocol-Independent Multicast Source
541 * Filter APIs. [RFC3678]
542 */
543struct group_req {
544        uint32_t                gr_interface;   /* interface index */
545        struct sockaddr_storage gr_group;       /* group address */
546};
547
548struct group_source_req {
549        uint32_t                gsr_interface;  /* interface index */
550        struct sockaddr_storage gsr_group;      /* group address */
551        struct sockaddr_storage gsr_source;     /* source address */
552};
553
554#ifndef __MSFILTERREQ_DEFINED
555#define __MSFILTERREQ_DEFINED
556/*
557 * The following structure is private; do not use it from user applications.
558 * It is used to communicate IP_MSFILTER/IPV6_MSFILTER information between
559 * the RFC 3678 libc functions and the kernel.
560 */
561struct __msfilterreq {
562        uint32_t                 msfr_ifindex;  /* interface index */
563        uint32_t                 msfr_fmode;    /* filter mode for group */
564        uint32_t                 msfr_nsrcs;    /* # of sources in msfr_srcs */
565        struct sockaddr_storage  msfr_group;    /* group address */
566        struct sockaddr_storage *msfr_srcs;     /* pointer to the first member
567                                                 * of a contiguous array of
568                                                 * sources to filter in full.
569                                                 */
570};
571#endif
572
573struct sockaddr;
574
575/*
576 * Advanced (Full-state) APIs [RFC3678]
577 * The RFC specifies uint_t for the 6th argument to [sg]etsourcefilter().
578 * We use uint32_t here to be consistent.
579 */
580int     setipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t,
581            uint32_t, struct in_addr *);
582int     getipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t *,
583            uint32_t *, struct in_addr *);
584int     setsourcefilter(int, uint32_t, struct sockaddr *, socklen_t,
585            uint32_t, uint32_t, struct sockaddr_storage *);
586int     getsourcefilter(int, uint32_t, struct sockaddr *, socklen_t,
587            uint32_t *, uint32_t *, struct sockaddr_storage *);
588
589/*
590 * Filter modes; also used to represent per-socket filter mode internally.
591 */
592#define MCAST_UNDEFINED 0       /* fmode: not yet defined */
593#define MCAST_INCLUDE   1       /* fmode: include these source(s) */
594#define MCAST_EXCLUDE   2       /* fmode: exclude these source(s) */
595
596/*
597 * Argument for IP_PORTRANGE:
598 * - which range to search when port is unspecified at bind() or connect()
599 */
600#define IP_PORTRANGE_DEFAULT    0       /* default range */
601#define IP_PORTRANGE_HIGH       1       /* "high" - request firewall bypass */
602#define IP_PORTRANGE_LOW        2       /* "low" - vouchsafe security */
603
604/*
605 * Definitions for inet sysctl operations.
606 *
607 * Third level is protocol number.
608 * Fourth level is desired variable within that protocol.
609 */
610#define IPPROTO_MAXID   (IPPROTO_AH + 1)        /* don't list to IPPROTO_MAX */
611
612#define CTL_IPPROTO_NAMES { \
613        { "ip", CTLTYPE_NODE }, \
614        { "icmp", CTLTYPE_NODE }, \
615        { "igmp", CTLTYPE_NODE }, \
616        { "ggp", CTLTYPE_NODE }, \
617        { 0, 0 }, \
618        { 0, 0 }, \
619        { "tcp", CTLTYPE_NODE }, \
620        { 0, 0 }, \
621        { "egp", CTLTYPE_NODE }, \
622        { 0, 0 }, \
623        { 0, 0 }, \
624        { 0, 0 }, \
625        { "pup", CTLTYPE_NODE }, \
626        { 0, 0 }, \
627        { 0, 0 }, \
628        { 0, 0 }, \
629        { 0, 0 }, \
630        { "udp", CTLTYPE_NODE }, \
631        { 0, 0 }, \
632        { 0, 0 }, \
633        { 0, 0 }, \
634        { 0, 0 }, \
635        { "idp", CTLTYPE_NODE }, \
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        { 0, 0 }, \
647        { 0, 0 }, \
648        { 0, 0 }, \
649        { 0, 0 }, \
650        { 0, 0 }, \
651        { 0, 0 }, \
652        { 0, 0 }, \
653        { 0, 0 }, \
654        { 0, 0 }, \
655        { 0, 0 }, \
656        { 0, 0 }, \
657        { 0, 0 }, \
658        { 0, 0 }, \
659        { 0, 0 }, \
660        { 0, 0 }, \
661        { 0, 0 }, \
662        { 0, 0 }, \
663        { 0, 0 }, \
664        { "ipsec", CTLTYPE_NODE }, \
665        { 0, 0 }, \
666        { 0, 0 }, \
667        { 0, 0 }, \
668        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
669        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
670        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
671        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
672        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
673        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
674        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
675        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
676        { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
677        { 0, 0 }, \
678        { 0, 0 }, \
679        { 0, 0 }, \
680        { "pim", CTLTYPE_NODE }, \
681}
682
683/*
684 * Names for IP sysctl objects
685 */
686#define IPCTL_FORWARDING        1       /* act as router */
687#define IPCTL_SENDREDIRECTS     2       /* may send redirects when forwarding */
688#define IPCTL_DEFTTL            3       /* default TTL */
689#ifdef notyet
690#define IPCTL_DEFMTU            4       /* default MTU */
691#endif
692#define IPCTL_RTEXPIRE          5       /* cloned route expiration time */
693#define IPCTL_RTMINEXPIRE       6       /* min value for expiration time */
694#define IPCTL_RTMAXCACHE        7       /* trigger level for dynamic expire */
695#define IPCTL_SOURCEROUTE       8       /* may perform source routes */
696#define IPCTL_DIRECTEDBROADCAST 9       /* may re-broadcast received packets */
697#define IPCTL_INTRQMAXLEN       10      /* max length of netisr queue */
698#define IPCTL_INTRQDROPS        11      /* number of netisr q drops */
699#define IPCTL_STATS             12      /* ipstat structure */
700#define IPCTL_ACCEPTSOURCEROUTE 13      /* may accept source routed packets */
701#define IPCTL_FASTFORWARDING    14      /* use fast IP forwarding code */
702#define IPCTL_KEEPFAITH         15      /* FAITH IPv4->IPv6 translater ctl */
703#define IPCTL_GIF_TTL           16      /* default TTL for gif encap packet */
704#define IPCTL_MAXID             17
705
706#define IPCTL_NAMES { \
707        { 0, 0 }, \
708        { "forwarding", CTLTYPE_INT }, \
709        { "redirect", CTLTYPE_INT }, \
710        { "ttl", CTLTYPE_INT }, \
711        { "mtu", CTLTYPE_INT }, \
712        { "rtexpire", CTLTYPE_INT }, \
713        { "rtminexpire", CTLTYPE_INT }, \
714        { "rtmaxcache", CTLTYPE_INT }, \
715        { "sourceroute", CTLTYPE_INT }, \
716        { "directed-broadcast", CTLTYPE_INT }, \
717        { "intr-queue-maxlen", CTLTYPE_INT }, \
718        { "intr-queue-drops", CTLTYPE_INT }, \
719        { "stats", CTLTYPE_STRUCT }, \
720        { "accept_sourceroute", CTLTYPE_INT }, \
721        { "fastforwarding", CTLTYPE_INT }, \
722}
723
724#endif /* __BSD_VISIBLE */
725
726#ifdef _KERNEL
727
728struct ifnet; struct mbuf;      /* forward declarations for Standard C */
729
730int      in_broadcast(struct in_addr, struct ifnet *);
731int      in_canforward(struct in_addr);
732int      in_localaddr(struct in_addr);
733int      in_localip(struct in_addr);
734int      inet_aton(const char *, struct in_addr *); /* in libkern */
735char    *inet_ntoa(struct in_addr); /* in libkern */
736char    *inet_ntoa_r(struct in_addr ina, char *buf); /* in libkern */
737char    *inet_ntop(int, const void *, char *, socklen_t); /* in libkern */
738int      inet_pton(int af, const char *, void *); /* in libkern */
739void     in_ifdetach(struct ifnet *);
740
741#define in_hosteq(s, t) ((s).s_addr == (t).s_addr)
742#define in_nullhost(x)  ((x).s_addr == INADDR_ANY)
743#define in_allhosts(x)  ((x).s_addr == htonl(INADDR_ALLHOSTS_GROUP))
744
745#define satosin(sa)     ((struct sockaddr_in *)(sa))
746#define sintosa(sin)    ((struct sockaddr *)(sin))
747#define ifatoia(ifa)    ((struct in_ifaddr *)(ifa))
748
749/*
750 * Historically, BSD keeps ip_len and ip_off in host format
751 * when doing layer 3 processing, and this often requires
752 * to translate the format back and forth.
753 * To make the process explicit, we define a couple of macros
754 * that also take into account the fact that at some point
755 * we may want to keep those fields always in net format.
756 */
757
758#if (BYTE_ORDER == BIG_ENDIAN) || defined(HAVE_NET_IPLEN)
759#define SET_NET_IPLEN(p)        do {} while (0)
760#define SET_HOST_IPLEN(p)       do {} while (0)
761#else
762#define SET_NET_IPLEN(p)        do {            \
763        struct ip *h_ip = (p);                  \
764        h_ip->ip_len = htons(h_ip->ip_len);     \
765        h_ip->ip_off = htons(h_ip->ip_off);     \
766        } while (0)
767
768#define SET_HOST_IPLEN(p)       do {            \
769        struct ip *h_ip = (p);                  \
770        h_ip->ip_len = ntohs(h_ip->ip_len);     \
771        h_ip->ip_off = ntohs(h_ip->ip_off);     \
772        } while (0)
773#endif /* !HAVE_NET_IPLEN */
774
775#endif /* _KERNEL */
776
777/* INET6 stuff */
778#if __POSIX_VISIBLE >= 200112
779#define __KAME_NETINET_IN_H_INCLUDED_
780#include <netinet6/in6.h>
781#undef __KAME_NETINET_IN_H_INCLUDED_
782#endif
783
784#endif /* !_NETINET_IN_H_*/
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