sys/netinet/in.h

   1 /*      $NetBSD: in.h,v 1.86 2009/09/14 10:36:50 degroote Exp $ */
   2
   3 /*
   4  * Copyright (c) 1982, 1986, 1990, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)in.h        8.3 (Berkeley) 1/3/94
  32  */
  33
  34 /*
  35  * Constants and structures defined by the internet system,
  36  * Per RFC 790, September 1981, and numerous additions.
  37  */
  38
  39 #ifndef _NETINET_IN_H_
  40 #define _NETINET_IN_H_
  41
  42 #include <machine/int_types.h>
  43
  44 #ifndef uint8_t
  45 typedef __uint8_t       uint8_t;
  46 #define uint8_t         __uint8_t
  47 #endif
  48
  49 #ifndef uint32_t
  50 typedef __uint32_t      uint32_t;
  51 #define uint32_t        __uint32_t
  52 #endif
  53
  54 #include <sys/ansi.h>
  55
  56 #ifndef in_addr_t
  57 typedef __in_addr_t     in_addr_t;
  58 #define in_addr_t       __in_addr_t
  59 #endif
  60
  61 #ifndef in_port_t
  62 typedef __in_port_t     in_port_t;
  63 #define in_port_t       __in_port_t
  64 #endif
  65
  66 #ifndef sa_family_t
  67 typedef __sa_family_t   sa_family_t;
  68 #define sa_family_t     __sa_family_t
  69 #endif
  70
  71 /*
  72  * Protocols
  73  */
  74 #define IPPROTO_IP              0               /* dummy for IP */
  75 #define IPPROTO_HOPOPTS         0               /* IP6 hop-by-hop options */
  76 #define IPPROTO_ICMP            1               /* control message protocol */
  77 #define IPPROTO_IGMP            2               /* group mgmt protocol */
  78 #define IPPROTO_GGP             3               /* gateway^2 (deprecated) */
  79 #define IPPROTO_IPV4            4               /* IP header */
  80 #define IPPROTO_IPIP            4               /* IP inside IP */
  81 #define IPPROTO_TCP             6               /* tcp */
  82 #define IPPROTO_EGP             8               /* exterior gateway protocol */
  83 #define IPPROTO_PUP             12              /* pup */
  84 #define IPPROTO_UDP             17              /* user datagram protocol */
  85 #define IPPROTO_IDP             22              /* xns idp */
  86 #define IPPROTO_TP              29              /* tp-4 w/ class negotiation */
  87 #define IPPROTO_IPV6            41              /* IP6 header */
  88 #define IPPROTO_ROUTING         43              /* IP6 routing header */
  89 #define IPPROTO_FRAGMENT        44              /* IP6 fragmentation header */
  90 #define IPPROTO_RSVP            46              /* resource reservation */
  91 #define IPPROTO_GRE             47              /* GRE encaps RFC 1701 */
  92 #define IPPROTO_ESP             50              /* encap. security payload */
  93 #define IPPROTO_AH              51              /* authentication header */
  94 #define IPPROTO_MOBILE          55              /* IP Mobility RFC 2004 */
  95 #define IPPROTO_IPV6_ICMP       58              /* IPv6 ICMP */
  96 #define IPPROTO_ICMPV6          58              /* ICMP6 */
  97 #define IPPROTO_NONE            59              /* IP6 no next header */
  98 #define IPPROTO_DSTOPTS         60              /* IP6 destination option */
  99 #define IPPROTO_EON             80              /* ISO cnlp */
 100 #define IPPROTO_ETHERIP         97              /* Ethernet-in-IP */
 101 #define IPPROTO_ENCAP           98              /* encapsulation header */
 102 #define IPPROTO_PIM             103             /* Protocol indep. multicast */
 103 #define IPPROTO_IPCOMP          108             /* IP Payload Comp. Protocol */
 104 #define IPPROTO_VRRP            112             /* VRRP RFC 2338 */
 105 #define IPPROTO_CARP            112             /* Common Address Resolution Protocol */
 106 #define IPPROTO_PFSYNC      240     /* PFSYNC */
 107 #define IPPROTO_RAW             255             /* raw IP packet */
 108 #define IPPROTO_MAX             256
 109
 110 /* last return value of *_input(), meaning "all job for this pkt is done".  */
 111 #define IPPROTO_DONE            257
 112
 113 /* sysctl placeholder for (FAST_)IPSEC */
 114 #define CTL_IPPROTO_IPSEC       258
 115
 116
 117 /*
 118  * Local port number conventions:
 119  *
 120  * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
 121  * unless a kernel is compiled with IPNOPRIVPORTS defined.
 122  *
 123  * When a user does a bind(2) or connect(2) with a port number of zero,
 124  * a non-conflicting local port address is chosen.
 125  *
 126  * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
 127  * that is settable by sysctl(3); net.inet.ip.anonportmin and
 128  * net.inet.ip.anonportmax respectively.
 129  *
 130  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
 131  * default assignment range.
 132  *
 133  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 134  *
 135  * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
 136  * and exists only for FreeBSD compatibility purposes.
 137  *
 138  * The value IP_PORTRANGE_LOW changes the range to the "low" are
 139  * that is (by convention) restricted to privileged processes.
 140  * This convention is based on "vouchsafe" principles only.
 141  * It is only secure if you trust the remote host to restrict these ports.
 142  * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
 143  */
 144
 145 #define IPPORT_RESERVED         1024
 146 #define IPPORT_ANONMIN          49152
 147 #define IPPORT_ANONMAX          65535
 148 #define IPPORT_RESERVEDMIN      600
 149 #define IPPORT_RESERVEDMAX      (IPPORT_RESERVED-1)
 150
 151 /*
 152  * Internet address (a structure for historical reasons)
 153  */
 154 struct in_addr {
 155         in_addr_t s_addr;
 156 } __packed;
 157
 158 /*
 159  * Definitions of bits in internet address integers.
 160  * On subnets, the decomposition of addresses to host and net parts
 161  * is done according to subnet mask, not the masks here.
 162  *
 163  * By byte-swapping the constants, we avoid ever having to byte-swap IP
 164  * addresses inside the kernel.  Unfortunately, user-level programs rely
 165  * on these macros not doing byte-swapping.
 166  */
 167 #ifdef _KERNEL
 168 #define __IPADDR(x)     ((uint32_t) htonl((uint32_t)(x)))
 169 #else
 170 #define __IPADDR(x)     ((uint32_t)(x))
 171 #endif
 172
 173 #define IN_CLASSA(i)            (((uint32_t)(i) & __IPADDR(0x80000000)) == \
 174                                  __IPADDR(0x00000000))
 175 #define IN_CLASSA_NET           __IPADDR(0xff000000)
 176 #define IN_CLASSA_NSHIFT        24
 177 #define IN_CLASSA_HOST          __IPADDR(0x00ffffff)
 178 #define IN_CLASSA_MAX           128
 179
 180 #define IN_CLASSB(i)            (((uint32_t)(i) & __IPADDR(0xc0000000)) == \
 181                                  __IPADDR(0x80000000))
 182 #define IN_CLASSB_NET           __IPADDR(0xffff0000)
 183 #define IN_CLASSB_NSHIFT        16
 184 #define IN_CLASSB_HOST          __IPADDR(0x0000ffff)
 185 #define IN_CLASSB_MAX           65536
 186
 187 #define IN_CLASSC(i)            (((uint32_t)(i) & __IPADDR(0xe0000000)) == \
 188                                  __IPADDR(0xc0000000))
 189 #define IN_CLASSC_NET           __IPADDR(0xffffff00)
 190 #define IN_CLASSC_NSHIFT        8
 191 #define IN_CLASSC_HOST          __IPADDR(0x000000ff)
 192
 193 #define IN_CLASSD(i)            (((uint32_t)(i) & __IPADDR(0xf0000000)) == \
 194                                  __IPADDR(0xe0000000))
 195 /* These ones aren't really net and host fields, but routing needn't know. */
 196 #define IN_CLASSD_NET           __IPADDR(0xf0000000)
 197 #define IN_CLASSD_NSHIFT        28
 198 #define IN_CLASSD_HOST          __IPADDR(0x0fffffff)
 199 #define IN_MULTICAST(i)         IN_CLASSD(i)
 200
 201 #define IN_EXPERIMENTAL(i)      (((uint32_t)(i) & __IPADDR(0xf0000000)) == \
 202                                  __IPADDR(0xf0000000))
 203 #define IN_BADCLASS(i)          (((uint32_t)(i) & __IPADDR(0xf0000000)) == \
 204                                  __IPADDR(0xf0000000))
 205
 206 #define IN_LINKLOCAL(i) (((uint32_t)(i) & __IPADDR(0xffff0000)) == \
 207                          __IPADDR(0xa9fe0000))
 208
 209 #define IN_PRIVATE(i)   ((((uint32_t)(i) & __IPADDR(0xff000000)) ==     \
 210                           __IPADDR(0x0a000000)) ||                      \
 211                          (((uint32_t)(i) & __IPADDR(0xfff00000)) ==     \
 212                           __IPADDR(0xac100000)) ||                      \
 213                          (((uint32_t)(i) & __IPADDR(0xffff0000)) ==     \
 214                           __IPADDR(0xc0a80000)))
 215
 216 #define IN_LOCAL_GROUP(i)       (((uint32_t)(i) & __IPADDR(0xffffff00)) == \
 217                                  __IPADDR(0xe0000000))
 218
 219 #define IN_ANY_LOCAL(i)         (IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i))
 220
 221 #define INADDR_ANY              __IPADDR(0x00000000)
 222 #define INADDR_LOOPBACK         __IPADDR(0x7f000001)
 223 #define INADDR_BROADCAST        __IPADDR(0xffffffff)    /* must be masked */
 224 #define INADDR_NONE             __IPADDR(0xffffffff)    /* -1 return */
 225
 226 #define INADDR_UNSPEC_GROUP     __IPADDR(0xe0000000)    /* 224.0.0.0 */
 227 #define INADDR_ALLHOSTS_GROUP   __IPADDR(0xe0000001)    /* 224.0.0.1 */
 228 #define INADDR_ALLRTRS_GROUP    __IPADDR(0xe0000002)    /* 224.0.0.2 */
 229 #define INADDR_CARP_GROUP       __IPADDR(0xe0000012)    /* 224.0.0.18 */
 230 #define INADDR_MAX_LOCAL_GROUP  __IPADDR(0xe00000ff)    /* 224.0.0.255 */
 231
 232 #define IN_LOOPBACKNET          127                     /* official! */
 233
 234 /*
 235  * Socket address, internet style.
 236  */
 237 #ifdef __minix
 238 struct sockaddr_in
 239 {
 240         sa_family_t     sin_family;
 241         in_port_t       sin_port;
 242         struct in_addr  sin_addr;
 243 };
 244 #else /* !__minix */
 245 struct sockaddr_in {
 246         uint8_t         sin_len;
 247         sa_family_t     sin_family;
 248         in_port_t       sin_port;
 249         struct in_addr  sin_addr;
 250         __int8_t        sin_zero[8];
 251 };
 252 #endif /* !__minix */
 253
 254 #define INET_ADDRSTRLEN                 16
 255
 256 #ifndef __minix
 257 /*
 258  * Structure used to describe IP options.
 259  * Used to store options internally, to pass them to a process,
 260  * or to restore options retrieved earlier.
 261  * The ip_dst is used for the first-hop gateway when using a source route
 262  * (this gets put into the header proper).
 263  */
 264 struct ip_opts {
 265         struct in_addr  ip_dst;         /* first hop, 0 w/o src rt */
 266 #if defined(__cplusplus)
 267         __int8_t        Ip_opts[40];    /* actually variable in size */
 268 #else
 269         __int8_t        ip_opts[40];    /* actually variable in size */
 270 #endif
 271 };
 272 #endif /* __minix */
 273
 274 /*
 275  * Options for use with [gs]etsockopt at the IP level.
 276  * First word of comment is data type; bool is stored in int.
 277  */
 278 #ifndef __minix
 279 #define IP_OPTIONS              1    /* buf/ip_opts; set/get IP options */
 280 #define IP_HDRINCL              2    /* int; header is included with data */
 281 #define IP_TOS                  3    /* int; IP type of service and preced. */
 282 #define IP_TTL                  4    /* int; IP time to live */
 283 #define IP_RECVOPTS             5    /* bool; receive all IP opts w/dgram */
 284 #define IP_RECVRETOPTS          6    /* bool; receive IP opts for response */
 285 #define IP_RECVDSTADDR          7    /* bool; receive IP dst addr w/dgram */
 286 #define IP_RETOPTS              8    /* ip_opts; set/get IP options */
 287 #define IP_MULTICAST_IF         9    /* in_addr; set/get IP multicast i/f  */
 288 #define IP_MULTICAST_TTL        10   /* u_char; set/get IP multicast ttl */
 289 #define IP_MULTICAST_LOOP       11   /* u_char; set/get IP multicast loopback */
 290 #endif /* !__minix */
 291 #define IP_ADD_MEMBERSHIP       12   /* ip_mreq; add an IP group membership */
 292 #define IP_DROP_MEMBERSHIP      13   /* ip_mreq; drop an IP group membership */
 293 #ifndef __minix
 294 #define IP_PORTRANGE            19   /* int; range to use for ephemeral port */
 295 #define IP_RECVIF               20   /* bool; receive reception if w/dgram */
 296 #define IP_ERRORMTU             21   /* int; get MTU of last xmit = EMSGSIZE */
 297 #if 1 /*IPSEC*/
 298 #define IP_IPSEC_POLICY         22 /* struct; get/set security policy */
 299 #endif
 300 #define IP_RECVTTL              23   /* bool; receive IP TTL w/dgram */
 301 #define IP_MINTTL               24   /* minimum TTL for packet or drop */
 302 #endif /* !__minix */
 303
 304 #ifndef __minix
 305 /*
 306  * Defaults and limits for options
 307  */
 308 #define IP_DEFAULT_MULTICAST_TTL  1     /* normally limit m'casts to 1 hop  */
 309 #define IP_DEFAULT_MULTICAST_LOOP 1     /* normally hear sends if a member  */
 310 #define IP_MAX_MEMBERSHIPS      20      /* per socket; must fit in one mbuf */
 311 #endif /* !__minix */
 312
 313 /*
 314  * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
 315  */
 316 struct ip_mreq {
 317         struct  in_addr imr_multiaddr;  /* IP multicast address of group */
 318         struct  in_addr imr_interface;  /* local IP address of interface */
 319 };
 320
 321 #ifndef __minix
 322 /*
 323  * Argument for IP_PORTRANGE:
 324  * - which range to search when port is unspecified at bind() or connect()
 325  */
 326 #define IP_PORTRANGE_DEFAULT    0       /* default range */
 327 #define IP_PORTRANGE_HIGH       1       /* same as DEFAULT (FreeBSD compat) */
 328 #define IP_PORTRANGE_LOW        2       /* use privileged range */
 329
 330 #if defined(_NETBSD_SOURCE)
 331 /*
 332  * Definitions for inet sysctl operations.
 333  *
 334  * Third level is protocol number.
 335  * Fourth level is desired variable within that protocol.
 336  */
 337 #define IPPROTO_MAXID   (IPPROTO_AH + 1)        /* don't list to IPPROTO_MAX */
 338
 339 #define CTL_IPPROTO_NAMES { \
 340         { "ip", CTLTYPE_NODE }, \
 341         { "icmp", CTLTYPE_NODE }, \
 342         { "igmp", CTLTYPE_NODE }, \
 343         { "ggp", CTLTYPE_NODE }, \
 344         { 0, 0 }, \
 345         { 0, 0 }, \
 346         { "tcp", CTLTYPE_NODE }, \
 347         { 0, 0 }, \
 348         { "egp", CTLTYPE_NODE }, \
 349         { 0, 0 }, \
 350         { 0, 0 }, \
 351         { 0, 0 }, \
 352         { "pup", CTLTYPE_NODE }, \
 353         { 0, 0 }, \
 354         { 0, 0 }, \
 355         { 0, 0 }, \
 356         { 0, 0 }, \
 357         { "udp", CTLTYPE_NODE }, \
 358         { 0, 0 }, \
 359         { 0, 0 }, \
 360         { 0, 0 }, \
 361         { 0, 0 }, \
 362         { "idp", CTLTYPE_NODE }, \
 363         { 0, 0 }, \
 364         { 0, 0 }, \
 365         { 0, 0 }, \
 366         { 0, 0 }, \
 367         { 0, 0 }, \
 368         { 0, 0 }, \
 369         { 0, 0 }, \
 370         { 0, 0 }, \
 371         { 0, 0 }, \
 372         { 0, 0 }, \
 373         { 0, 0 }, \
 374         { 0, 0 }, \
 375         { 0, 0 }, \
 376         { 0, 0 }, \
 377         { 0, 0 }, \
 378         { 0, 0 }, \
 379         { 0, 0 }, \
 380         { 0, 0 }, \
 381         { 0, 0 }, \
 382         { 0, 0 }, \
 383         { 0, 0 }, \
 384         { 0, 0 }, \
 385         { 0, 0 }, \
 386         { 0, 0 }, \
 387         { 0, 0 }, \
 388         { 0, 0 }, \
 389         { 0, 0 }, \
 390         { 0, 0 }, \
 391         { "ipsec", CTLTYPE_NODE }, \
 392         { 0, 0 }, \
 393         { 0, 0 }, \
 394         { 0, 0 }, \
 395         { 0, 0 }, \
 396         { 0, 0 }, \
 397         { 0, 0 }, \
 398         { 0, 0 }, \
 399         { 0, 0 }, \
 400         { 0, 0 }, \
 401         { 0, 0 }, \
 402         { 0, 0 }, \
 403         { 0, 0 }, \
 404         { 0, 0 }, \
 405         { 0, 0 }, \
 406         { 0, 0 }, \
 407         { 0, 0 }, \
 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         { 0, 0 }, \
 437         { 0, 0 }, \
 438         { 0, 0 }, \
 439         { 0, 0 }, \
 440         { 0, 0 }, \
 441         { 0, 0 }, \
 442         { 0, 0 }, \
 443         { "pim", CTLTYPE_NODE }, \
 444 }
 445
 446 /*
 447  * Names for IP sysctl objects
 448  */
 449 #define IPCTL_FORWARDING        1       /* act as router */
 450 #define IPCTL_SENDREDIRECTS     2       /* may send redirects when forwarding */
 451 #define IPCTL_DEFTTL            3       /* default TTL */
 452 #ifdef notyet
 453 #define IPCTL_DEFMTU            4       /* default MTU */
 454 #endif
 455 #define IPCTL_FORWSRCRT         5       /* forward source-routed packets */
 456 #define IPCTL_DIRECTEDBCAST     6       /* default broadcast behavior */
 457 #define IPCTL_ALLOWSRCRT        7       /* allow/drop all source-routed pkts */
 458 #define IPCTL_SUBNETSARELOCAL   8       /* treat subnets as local addresses */
 459 #define IPCTL_MTUDISC           9       /* allow path MTU discovery */
 460 #define IPCTL_ANONPORTMIN      10       /* minimum ephemeral port */
 461 #define IPCTL_ANONPORTMAX      11       /* maximum ephemeral port */
 462 #define IPCTL_MTUDISCTIMEOUT   12       /* allow path MTU discovery */
 463 #define IPCTL_MAXFLOWS         13       /* maximum ip flows allowed */
 464 #define IPCTL_HOSTZEROBROADCAST 14      /* is host zero a broadcast addr? */
 465 #define IPCTL_GIF_TTL          15       /* default TTL for gif encap packet */
 466 #define IPCTL_LOWPORTMIN       16       /* minimum reserved port */
 467 #define IPCTL_LOWPORTMAX       17       /* maximum reserved port */
 468 #define IPCTL_MAXFRAGPACKETS   18       /* max packets reassembly queue */
 469 #define IPCTL_GRE_TTL          19       /* default TTL for gre encap packet */
 470 #define IPCTL_CHECKINTERFACE   20       /* drop pkts in from 'wrong' iface */
 471 #define IPCTL_IFQ              21       /* ipintrq node */
 472 #define IPCTL_RANDOMID         22       /* use random IP ids (if configured) */
 473 #define IPCTL_LOOPBACKCKSUM    23       /* do IP checksum on loopback */
 474 #define IPCTL_STATS             24      /* IP statistics */
 475 #define IPCTL_MAXID            25
 476
 477 #define IPCTL_NAMES { \
 478         { 0, 0 }, \
 479         { "forwarding", CTLTYPE_INT }, \
 480         { "redirect", CTLTYPE_INT }, \
 481         { "ttl", CTLTYPE_INT }, \
 482         { "mtu", CTLTYPE_INT }, \
 483         { "forwsrcrt", CTLTYPE_INT }, \
 484         { "directed-broadcast", CTLTYPE_INT }, \
 485         { "allowsrcrt", CTLTYPE_INT }, \
 486         { "subnetsarelocal", CTLTYPE_INT }, \
 487         { "mtudisc", CTLTYPE_INT }, \
 488         { "anonportmin", CTLTYPE_INT }, \
 489         { "anonportmax", CTLTYPE_INT }, \
 490         { "mtudisctimeout", CTLTYPE_INT }, \
 491         { "maxflows", CTLTYPE_INT }, \
 492         { "hostzerobroadcast", CTLTYPE_INT }, \
 493         { "gifttl", CTLTYPE_INT }, \
 494         { "lowportmin", CTLTYPE_INT }, \
 495         { "lowportmax", CTLTYPE_INT }, \
 496         { "maxfragpackets", CTLTYPE_INT }, \
 497         { "grettl", CTLTYPE_INT }, \
 498         { "checkinterface", CTLTYPE_INT }, \
 499         { "ifq", CTLTYPE_NODE }, \
 500         { "random_id", CTLTYPE_INT }, \
 501         { "do_loopback_cksum", CTLTYPE_INT }, \
 502         { "stats", CTLTYPE_STRUCT }, \
 503 }
 504 #endif /* _NETBSD_SOURCE */
 505 #endif /* __minix */
 506
 507 /* INET6 stuff */
 508 #define __KAME_NETINET_IN_H_INCLUDED_
 509 #include <netinet6/in6.h>
 510 #undef __KAME_NETINET_IN_H_INCLUDED_
 511
 512 #ifndef __minix
 513 #ifdef _KERNEL
 514 /*
 515  * in_cksum_phdr:
 516  *
 517  *      Compute significant parts of the IPv4 checksum pseudo-header
 518  *      for use in a delayed TCP/UDP checksum calculation.
 519  *
 520  *      Args:
 521  *
 522  *              src             Source IP address
 523  *              dst             Destination IP address
 524  *              lenproto        htons(proto-hdr-len + proto-number)
 525  */
 526 static __inline u_int16_t __unused
 527 in_cksum_phdr(u_int32_t src, u_int32_t dst, u_int32_t lenproto)
 528 {
 529         u_int32_t sum;
 530
 531         sum = lenproto +
 532               (u_int16_t)(src >> 16) +
 533               (u_int16_t)(src /*& 0xffff*/) +
 534               (u_int16_t)(dst >> 16) +
 535               (u_int16_t)(dst /*& 0xffff*/);
 536
 537         sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/);
 538
 539         if (sum > 0xffff)
 540                 sum -= 0xffff;
 541
 542         return (sum);
 543 }
 544
 545 /*
 546  * in_cksum_addword:
 547  *
 548  *      Add the two 16-bit network-order values, carry, and return.
 549  */
 550 static __inline u_int16_t __unused
 551 in_cksum_addword(u_int16_t a, u_int16_t b)
 552 {
 553         u_int32_t sum = a + b;
 554
 555         if (sum > 0xffff)
 556                 sum -= 0xffff;
 557
 558         return (sum);
 559 }
 560
 561 extern  struct in_addr zeroin_addr;
 562 extern  u_char  ip_protox[];
 563 extern const struct sockaddr_in in_any;
 564
 565 int     in_broadcast(struct in_addr, struct ifnet *);
 566 int     in_canforward(struct in_addr);
 567 int     cpu_in_cksum(struct mbuf *, int, int, uint32_t);
 568 int     in_cksum(struct mbuf *, int);
 569 int     in4_cksum(struct mbuf *, u_int8_t, int, int);
 570 void    in_delayed_cksum(struct mbuf *);
 571 int     in_localaddr(struct in_addr);
 572 void    in_socktrim(struct sockaddr_in *);
 573
 574 #define in_hosteq(s,t)  ((s).s_addr == (t).s_addr)
 575 #define in_nullhost(x)  ((x).s_addr == INADDR_ANY)
 576
 577 #define satosin(sa)     ((struct sockaddr_in *)(sa))
 578 #define satocsin(sa)    ((const struct sockaddr_in *)(sa))
 579 #define sintosa(sin)    ((struct sockaddr *)(sin))
 580 #define sintocsa(sin)   ((const struct sockaddr *)(sin))
 581 #define ifatoia(ifa)    ((struct in_ifaddr *)(ifa))
 582
 583 int sockaddr_in_cmp(const struct sockaddr *, const struct sockaddr *);
 584 const void *sockaddr_in_const_addr(const struct sockaddr *, socklen_t *);
 585 void *sockaddr_in_addr(struct sockaddr *, socklen_t *);
 586
 587 static inline void
 588 sockaddr_in_init1(struct sockaddr_in *sin, const struct in_addr *addr,
 589     in_port_t port)
 590 {
 591         sin->sin_port = port;
 592         sin->sin_addr = *addr;
 593         memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
 594 }
 595
 596 static inline void
 597 sockaddr_in_init(struct sockaddr_in *sin, const struct in_addr *addr,
 598     in_port_t port)
 599 {
 600         sin->sin_family = AF_INET;
 601         sin->sin_len = sizeof(*sin);
 602         sockaddr_in_init1(sin, addr, port);
 603 }
 604
 605 static inline struct sockaddr *
 606 sockaddr_in_alloc(const struct in_addr *addr, in_port_t port, int flags)
 607 {
 608         struct sockaddr *sa;
 609
 610         sa = sockaddr_alloc(AF_INET, sizeof(struct sockaddr_in), flags);
 611
 612         if (sa == NULL)
 613                 return NULL;
 614
 615         sockaddr_in_init1(satosin(sa), addr, port);
 616
 617         return sa;
 618 }
 619 #endif /* _KERNEL */
 620 #endif /* __minix */
 621
 622 #endif /* !_NETINET_IN_H_ */