The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/netinet/in.h

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    1 /*
    2  * Copyright (c) 1982, 1986, 1990, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by the University of
   16  *      California, Berkeley and its contributors.
   17  * 4. Neither the name of the University nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  *      @(#)in.h        8.3 (Berkeley) 1/3/94
   34  * $FreeBSD: src/sys/netinet/in.h,v 1.48.2.10 2003/08/24 08:24:38 hsu Exp $
   35  * $DragonFly: src/sys/netinet/in.h,v 1.16 2007/08/16 20:03:57 dillon Exp $
   36  */
   37 
   38 #ifndef _NETINET_IN_H_
   39 #define _NETINET_IN_H_
   40 
   41 #include <sys/types.h>
   42 
   43 #ifndef _KERNEL
   44 #include <machine/endian.h>
   45 #ifndef htonl
   46 #define htonl(x)        __htonl(x)
   47 #endif
   48 #ifndef htons
   49 #define htons(x)        __htons(x)
   50 #endif
   51 #ifndef ntohl
   52 #define ntohl(x)        __ntohl(x)
   53 #endif
   54 #ifndef ntohs
   55 #define ntohs(x)        __ntohs(x)
   56 #endif
   57 #endif
   58 
   59 /*
   60  * Constants and structures defined by the internet system,
   61  * Per RFC 790, September 1981, and numerous additions.
   62  */
   63 
   64 /*
   65  * Protocols (RFC 1700)
   66  */
   67 #define IPPROTO_IP              0               /* dummy for IP */
   68 #define IPPROTO_HOPOPTS         0               /* IP6 hop-by-hop options */
   69 #define IPPROTO_ICMP            1               /* control message protocol */
   70 #define IPPROTO_IGMP            2               /* group mgmt protocol */
   71 #define IPPROTO_GGP             3               /* gateway^2 (deprecated) */
   72 #define IPPROTO_IPV4            4               /* IPv4 encapsulation */
   73 #define IPPROTO_IPIP            IPPROTO_IPV4    /* for compatibility */
   74 #define IPPROTO_TCP             6               /* tcp */
   75 #define IPPROTO_ST              7               /* Stream protocol II */
   76 #define IPPROTO_EGP             8               /* exterior gateway protocol */
   77 #define IPPROTO_PIGP            9               /* private interior gateway */
   78 #define IPPROTO_RCCMON          10              /* BBN RCC Monitoring */
   79 #define IPPROTO_NVPII           11              /* network voice protocol*/
   80 #define IPPROTO_PUP             12              /* pup */
   81 #define IPPROTO_ARGUS           13              /* Argus */
   82 #define IPPROTO_EMCON           14              /* EMCON */
   83 #define IPPROTO_XNET            15              /* Cross Net Debugger */
   84 #define IPPROTO_CHAOS           16              /* Chaos*/
   85 #define IPPROTO_UDP             17              /* user datagram protocol */
   86 #define IPPROTO_MUX             18              /* Multiplexing */
   87 #define IPPROTO_MEAS            19              /* DCN Measurement Subsystems */
   88 #define IPPROTO_HMP             20              /* Host Monitoring */
   89 #define IPPROTO_PRM             21              /* Packet Radio Measurement */
   90 #define IPPROTO_IDP             22              /* xns idp */
   91 #define IPPROTO_TRUNK1          23              /* Trunk-1 */
   92 #define IPPROTO_TRUNK2          24              /* Trunk-2 */
   93 #define IPPROTO_LEAF1           25              /* Leaf-1 */
   94 #define IPPROTO_LEAF2           26              /* Leaf-2 */
   95 #define IPPROTO_RDP             27              /* Reliable Data */
   96 #define IPPROTO_IRTP            28              /* Reliable Transaction */
   97 #define IPPROTO_TP              29              /* tp-4 w/ class negotiation */
   98 #define IPPROTO_BLT             30              /* Bulk Data Transfer */
   99 #define IPPROTO_NSP             31              /* Network Services */
  100 #define IPPROTO_INP             32              /* Merit Internodal */
  101 #define IPPROTO_SEP             33              /* Sequential Exchange */
  102 #define IPPROTO_3PC             34              /* Third Party Connect */
  103 #define IPPROTO_IDPR            35              /* InterDomain Policy Routing */
  104 #define IPPROTO_XTP             36              /* XTP */
  105 #define IPPROTO_DDP             37              /* Datagram Delivery */
  106 #define IPPROTO_CMTP            38              /* Control Message Transport */
  107 #define IPPROTO_TPXX            39              /* TP++ Transport */
  108 #define IPPROTO_IL              40              /* IL transport protocol */
  109 #define IPPROTO_IPV6            41              /* IP6 header */
  110 #define IPPROTO_SDRP            42              /* Source Demand Routing */
  111 #define IPPROTO_ROUTING         43              /* IP6 routing header */
  112 #define IPPROTO_FRAGMENT        44              /* IP6 fragmentation header */
  113 #define IPPROTO_IDRP            45              /* InterDomain Routing*/
  114 #define IPPROTO_RSVP            46              /* resource reservation */
  115 #define IPPROTO_GRE             47              /* General Routing Encap. */
  116 #define IPPROTO_MHRP            48              /* Mobile Host Routing */
  117 #define IPPROTO_BHA             49              /* BHA */
  118 #define IPPROTO_ESP             50              /* IP6 Encap Sec. Payload */
  119 #define IPPROTO_AH              51              /* IP6 Auth Header */
  120 #define IPPROTO_INLSP           52              /* Integ. Net Layer Security */
  121 #define IPPROTO_SWIPE           53              /* IP with encryption */
  122 #define IPPROTO_NHRP            54              /* Next Hop Resolution */
  123 #define IPPROTO_MOBILE          55              /* IP Mobility */
  124 #define IPPROTO_TLSP            56              /* Transport Layer Security */
  125 #define IPPROTO_SKIP            57              /* SKIP */
  126 #define IPPROTO_ICMPV6          58              /* ICMP6 */
  127 #define IPPROTO_NONE            59              /* IP6 no next header */
  128 #define IPPROTO_DSTOPTS         60              /* IP6 destination option */
  129 #define IPPROTO_AHIP            61              /* any host internal protocol */
  130 #define IPPROTO_CFTP            62              /* CFTP */
  131 #define IPPROTO_HELLO           63              /* "hello" routing protocol */
  132 #define IPPROTO_SATEXPAK        64              /* SATNET/Backroom EXPAK */
  133 #define IPPROTO_KRYPTOLAN       65              /* Kryptolan */
  134 #define IPPROTO_RVD             66              /* Remote Virtual Disk */
  135 #define IPPROTO_IPPC            67              /* Pluribus Packet Core */
  136 #define IPPROTO_ADFS            68              /* Any distributed FS */
  137 #define IPPROTO_SATMON          69              /* Satnet Monitoring */
  138 #define IPPROTO_VISA            70              /* VISA Protocol */
  139 #define IPPROTO_IPCV            71              /* Packet Core Utility */
  140 #define IPPROTO_CPNX            72              /* Comp. Prot. Net. Executive */
  141 #define IPPROTO_CPHB            73              /* Comp. Prot. HeartBeat */
  142 #define IPPROTO_WSN             74              /* Wang Span Network */
  143 #define IPPROTO_PVP             75              /* Packet Video Protocol */
  144 #define IPPROTO_BRSATMON        76              /* BackRoom SATNET Monitoring */
  145 #define IPPROTO_ND              77              /* Sun net disk proto (temp.) */
  146 #define IPPROTO_WBMON           78              /* WIDEBAND Monitoring */
  147 #define IPPROTO_WBEXPAK         79              /* WIDEBAND EXPAK */
  148 #define IPPROTO_EON             80              /* ISO cnlp */
  149 #define IPPROTO_VMTP            81              /* VMTP */
  150 #define IPPROTO_SVMTP           82              /* Secure VMTP */
  151 #define IPPROTO_VINES           83              /* Banyon VINES */
  152 #define IPPROTO_TTP             84              /* TTP */
  153 #define IPPROTO_IGP             85              /* NSFNET-IGP */
  154 #define IPPROTO_DGP             86              /* dissimilar gateway prot. */
  155 #define IPPROTO_TCF             87              /* TCF */
  156 #define IPPROTO_IGRP            88              /* Cisco/GXS IGRP */
  157 #define IPPROTO_OSPFIGP         89              /* OSPFIGP */
  158 #define IPPROTO_SRPC            90              /* Strite RPC protocol */
  159 #define IPPROTO_LARP            91              /* Locus Address Resoloution */
  160 #define IPPROTO_MTP             92              /* Multicast Transport */
  161 #define IPPROTO_AX25            93              /* AX.25 Frames */
  162 #define IPPROTO_IPEIP           94              /* IP encapsulated in IP */
  163 #define IPPROTO_MICP            95              /* Mobile Int.ing control */
  164 #define IPPROTO_SCCSP           96              /* Semaphore Comm. security */
  165 #define IPPROTO_ETHERIP         97              /* Ethernet IP encapsulation */
  166 #define IPPROTO_ENCAP           98              /* encapsulation header */
  167 #define IPPROTO_APES            99              /* any private encr. scheme */
  168 #define IPPROTO_GMTP            100             /* GMTP*/
  169 #define IPPROTO_IPCOMP          108             /* payload compression (IPComp) */
  170 /* 101-254: Partly Unassigned */
  171 #define IPPROTO_PIM             103             /* Protocol Independent Mcast */
  172 #define IPPROTO_CARP            112             /* CARP */
  173 #define IPPROTO_PGM             113             /* PGM */
  174 #define IPPROTO_SCTP            132             /* SCTP */
  175 #define IPPROTO_PFSYNC          240             /* PFSYNC */
  176 /* 255: Reserved */
  177 /* BSD Private, local use, namespace incursion */
  178 #define IPPROTO_DIVERT          254             /* divert pseudo-protocol */
  179 #define IPPROTO_RAW             255             /* raw IP packet */
  180 #define IPPROTO_MAX             256
  181 
  182 /* last return value of *_input(), meaning "all job for this pkt is done".  */
  183 #define IPPROTO_DONE            257
  184 
  185 /* Used by RSS: the layer3 protocol is unknown */
  186 #define IPPROTO_UNKNOWN         258
  187 
  188 /*
  189  * Local port number conventions:
  190  *
  191  * When a user does a bind(2) or connect(2) with a port number of zero,
  192  * a non-conflicting local port address is chosen.
  193  * The default range is IPPORT_RESERVED through
  194  * IPPORT_USERRESERVED, although that is settable by sysctl.
  195  *
  196  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
  197  * default assignment range.
  198  *
  199  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
  200  *
  201  * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
  202  * into the "high" range.  These are reserved for client outbound connections
  203  * which do not want to be filtered by any firewalls.
  204  *
  205  * The value IP_PORTRANGE_LOW changes the range to the "low" are
  206  * that is (by convention) restricted to privileged processes.  This
  207  * convention is based on "vouchsafe" principles only.  It is only secure
  208  * if you trust the remote host to restrict these ports.
  209  *
  210  * The default range of ports and the high range can be changed by
  211  * sysctl(3).  (net.inet.ip.port{hi,low}{first,last}_auto)
  212  *
  213  * Changing those values has bad security implications if you are
  214  * using a a stateless firewall that is allowing packets outside of that
  215  * range in order to allow transparent outgoing connections.
  216  *
  217  * Such a firewall configuration will generally depend on the use of these
  218  * default values.  If you change them, you may find your Security
  219  * Administrator looking for you with a heavy object.
  220  *
  221  * For a slightly more orthodox text view on this:
  222  *   ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
  223  *
  224  *   port numbers are divided into three ranges:
  225  *              0 -  1023 Well Known Ports
  226  *           1024 - 49151 Registered Ports
  227  *          49152 - 65535 Dynamic and/or Private Ports
  228  */
  229 
  230 /*
  231  * Ports < IPPORT_RESERVED are reserved for
  232  * privileged processes (e.g. root).  (IP_PORTRANGE_LOW)
  233  * Ports > IPPORT_USERRESERVED are reserved
  234  * for servers, not necessarily privileged.  (IP_PORTRANGE_DEFAULT)
  235  */
  236 #define IPPORT_RESERVED         1024
  237 #define IPPORT_USERRESERVED     5000
  238 
  239 /*
  240  * Default local port range to use by setting IP_PORTRANGE_HIGH
  241  */
  242 #define IPPORT_HIFIRSTAUTO      49152
  243 #define IPPORT_HILASTAUTO       65535
  244 
  245 /*
  246  * Scanning for a free reserved port return a value below IPPORT_RESERVED,
  247  * but higher than IPPORT_RESERVEDSTART.  Traditionally the start value was
  248  * 512, but that conflicts with some well-known-services that firewalls may
  249  * have a fit if we use.
  250  */
  251 #define IPPORT_RESERVEDSTART    600
  252 
  253 #define IPPORT_MAX              65535
  254 
  255 #ifndef _STRUCT_IN_ADDR_DECLARED
  256 #define _STRUCT_IN_ADDR_DECLARED
  257 /*
  258  * Internet address (a structure for historical reasons)
  259  */
  260 struct in_addr {
  261         in_addr_t s_addr;
  262 };
  263 #endif
  264 
  265 /*
  266  * Definitions of bits in internet address integers.
  267  * On subnets, the decomposition of addresses to host and net parts
  268  * is done according to subnet mask, not the masks here.
  269  */
  270 #define IN_CLASSA(i)            (((u_int32_t)(i) & 0x80000000) == 0)
  271 #define IN_CLASSA_NET           0xff000000
  272 #define IN_CLASSA_NSHIFT        24
  273 #define IN_CLASSA_HOST          0x00ffffff
  274 #define IN_CLASSA_MAX           128
  275 
  276 #define IN_CLASSB(i)            (((u_int32_t)(i) & 0xc0000000) == 0x80000000)
  277 #define IN_CLASSB_NET           0xffff0000
  278 #define IN_CLASSB_NSHIFT        16
  279 #define IN_CLASSB_HOST          0x0000ffff
  280 #define IN_CLASSB_MAX           65536
  281 
  282 #define IN_CLASSC(i)            (((u_int32_t)(i) & 0xe0000000) == 0xc0000000)
  283 #define IN_CLASSC_NET           0xffffff00
  284 #define IN_CLASSC_NSHIFT        8
  285 #define IN_CLASSC_HOST          0x000000ff
  286 
  287 #define IN_CLASSD(i)            (((u_int32_t)(i) & 0xf0000000) == 0xe0000000)
  288 #define IN_CLASSD_NET           0xf0000000      /* These ones aren't really */
  289 #define IN_CLASSD_NSHIFT        28              /* net and host fields, but */
  290 #define IN_CLASSD_HOST          0x0fffffff      /* routing needn't know.    */
  291 #define IN_MULTICAST(i)         IN_CLASSD(i)
  292 
  293 #define IN_EXPERIMENTAL(i)      (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
  294 #define IN_BADCLASS(i)          (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
  295 
  296 #define INADDR_ANY              (u_int32_t)0x00000000
  297 #define INADDR_LOOPBACK         (u_int32_t)0x7f000001
  298 #define INADDR_BROADCAST        (u_int32_t)0xffffffff   /* must be masked */
  299 #ifndef _KERNEL
  300 #define INADDR_NONE             0xffffffff              /* -1 return */
  301 #endif
  302 
  303 #define INADDR_UNSPEC_GROUP     (u_int32_t)0xe0000000   /* 224.0.0.0 */
  304 #define INADDR_ALLHOSTS_GROUP   (u_int32_t)0xe0000001   /* 224.0.0.1 */
  305 #define INADDR_ALLRTRS_GROUP    (u_int32_t)0xe0000002   /* 224.0.0.2 */
  306 #define INADDR_CARP_GROUP       (u_int32_t)0xe0000012   /* 224.0.0.18 */
  307 #define INADDR_PFSYNC_GROUP     (u_int32_t)0xe00000f0   /* 224.0.0.240 */
  308 #define INADDR_MAX_LOCAL_GROUP  (u_int32_t)0xe00000ff   /* 224.0.0.255 */
  309 
  310 #define IN_LOOPBACKNET          127                     /* official! */
  311 
  312 /*
  313  * Socket address, internet style.
  314  */
  315 struct sockaddr_in {
  316         u_char  sin_len;
  317         u_char  sin_family;
  318         u_short sin_port;
  319         struct  in_addr sin_addr;
  320         char    sin_zero[8];
  321 };
  322 
  323 #define INET_ADDRSTRLEN         16
  324 
  325 /*
  326  * Options for use with [gs]etsockopt at the IP level.
  327  * First word of comment is data type; bool is stored in int.
  328  */
  329 #define IP_OPTIONS              1    /* buf/ip_opts; set/get IP options */
  330 #define IP_HDRINCL              2    /* int; header is included with data */
  331 #define IP_TOS                  3    /* int; IP type of service and preced. */
  332 #define IP_TTL                  4    /* int; IP time to live */
  333 #define IP_RECVOPTS             5    /* bool; receive all IP opts w/dgram */
  334 #define IP_RECVRETOPTS          6    /* bool; receive IP opts for response */
  335 #define IP_RECVDSTADDR          7    /* bool; receive IP dst addr w/dgram */
  336 #define IP_RETOPTS              8    /* ip_opts; set/get IP options */
  337 #define IP_MULTICAST_IF         9    /* u_char; set/get IP multicast i/f  */
  338 #define IP_MULTICAST_TTL        10   /* u_char; set/get IP multicast ttl */
  339 #define IP_MULTICAST_LOOP       11   /* u_char; set/get IP multicast loopback */
  340 #define IP_ADD_MEMBERSHIP       12   /* ip_mreq; add an IP group membership */
  341 #define IP_DROP_MEMBERSHIP      13   /* ip_mreq; drop an IP group membership */
  342 #define IP_MULTICAST_VIF        14   /* set/get IP mcast virt. iface */
  343 #define IP_RSVP_ON              15   /* enable RSVP in kernel */
  344 #define IP_RSVP_OFF             16   /* disable RSVP in kernel */
  345 #define IP_RSVP_VIF_ON          17   /* set RSVP per-vif socket */
  346 #define IP_RSVP_VIF_OFF         18   /* unset RSVP per-vif socket */
  347 #define IP_PORTRANGE            19   /* int; range to choose for unspec port */
  348 #define IP_RECVIF               20   /* bool; receive reception if w/dgram */
  349 /* for IPSEC */
  350 #define IP_IPSEC_POLICY         21   /* int; set/get security policy */
  351 #define IP_FAITH                22   /* bool; accept FAITH'ed connections */
  352 
  353 #define IP_FW_ADD               50   /* add a firewall rule to chain */
  354 #define IP_FW_DEL               51   /* delete a firewall rule from chain */
  355 #define IP_FW_FLUSH             52   /* flush firewall rule chain */
  356 #define IP_FW_ZERO              53   /* clear single/all firewall counter(s) */
  357 #define IP_FW_GET               54   /* get entire firewall rule chain */
  358 #define IP_FW_RESETLOG          55   /* reset logging counters */
  359 
  360 #define IP_DUMMYNET_CONFIGURE   60   /* add/configure a dummynet pipe */
  361 #define IP_DUMMYNET_DEL         61   /* delete a dummynet pipe from chain */
  362 #define IP_DUMMYNET_FLUSH       62   /* flush dummynet */
  363 #define IP_DUMMYNET_GET         64   /* get entire dummynet pipes */
  364 
  365 #define IP_RECVTTL              65   /* bool; receive IP TTL w/dgram */
  366 #define IP_MINTTL               66   /* minimum TTL for packet or drop */
  367 
  368 /*
  369  * Defaults and limits for options
  370  */
  371 #define IP_DEFAULT_MULTICAST_TTL  1     /* normally limit m'casts to 1 hop  */
  372 #define IP_DEFAULT_MULTICAST_LOOP 1     /* normally hear sends if a member  */
  373 #define IP_MAX_MEMBERSHIPS      20      /* per socket */
  374 
  375 /*
  376  * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
  377  */
  378 struct ip_mreq {
  379         struct  in_addr imr_multiaddr;  /* IP multicast address of group */
  380         struct  in_addr imr_interface;  /* local IP address of interface */
  381 };
  382 
  383 /*
  384  * Argument for IP_PORTRANGE:
  385  * - which range to search when port is unspecified at bind() or connect()
  386  */
  387 #define IP_PORTRANGE_DEFAULT    0       /* default range */
  388 #define IP_PORTRANGE_HIGH       1       /* "high" - request firewall bypass */
  389 #define IP_PORTRANGE_LOW        2       /* "low" - vouchsafe security */
  390 
  391 /*
  392  * Definitions for inet sysctl operations.
  393  *
  394  * Third level is protocol number.
  395  * Fourth level is desired variable within that protocol.
  396  */
  397 #define IPPROTO_MAXID   (IPPROTO_AH + 1)        /* don't list to IPPROTO_MAX */
  398 
  399 #define CTL_IPPROTO_NAMES { \
  400         { "ip", CTLTYPE_NODE }, \
  401         { "icmp", CTLTYPE_NODE }, \
  402         { "igmp", CTLTYPE_NODE }, \
  403         { "ggp", CTLTYPE_NODE }, \
  404         { 0, 0 }, \
  405         { 0, 0 }, \
  406         { "tcp", CTLTYPE_NODE }, \
  407         { 0, 0 }, \
  408         { "egp", CTLTYPE_NODE }, \
  409         { 0, 0 }, \
  410         { 0, 0 }, \
  411         { 0, 0 }, \
  412         { "pup", CTLTYPE_NODE }, \
  413         { 0, 0 }, \
  414         { 0, 0 }, \
  415         { 0, 0 }, \
  416         { 0, 0 }, \
  417         { "udp", CTLTYPE_NODE }, \
  418         { 0, 0 }, \
  419         { 0, 0 }, \
  420         { 0, 0 }, \
  421         { 0, 0 }, \
  422         { "idp", CTLTYPE_NODE }, \
  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         { 0, 0 }, \
  444         { 0, 0 }, \
  445         { 0, 0 }, \
  446         { 0, 0 }, \
  447         { 0, 0 }, \
  448         { 0, 0 }, \
  449         { 0, 0 }, \
  450         { 0, 0 }, \
  451         { "ipsec", CTLTYPE_NODE }, \
  452         { 0, 0 }, \
  453         { 0, 0 }, \
  454         { 0, 0 }, \
  455         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
  456         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
  457         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
  458         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
  459         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
  460         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
  461         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
  462         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
  463         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
  464         { 0, 0 }, \
  465         { 0, 0 }, \
  466         { 0, 0 }, \
  467         { "pim", CTLTYPE_NODE }, \
  468 }
  469 
  470 /*
  471  * Names for IP sysctl objects
  472  */
  473 #define IPCTL_FORWARDING        1       /* act as router */
  474 #define IPCTL_SENDREDIRECTS     2       /* may send redirects when forwarding */
  475 #define IPCTL_DEFTTL            3       /* default TTL */
  476 #ifdef notyet
  477 #define IPCTL_DEFMTU            4       /* default MTU */
  478 #endif
  479 #define IPCTL_RTEXPIRE          5       /* cloned route expiration time */
  480 #define IPCTL_RTMINEXPIRE       6       /* min value for expiration time */
  481 #define IPCTL_RTMAXCACHE        7       /* trigger level for dynamic expire */
  482 #define IPCTL_SOURCEROUTE       8       /* may perform source routes */
  483 #define IPCTL_DIRECTEDBROADCAST 9       /* may re-broadcast received packets */
  484 #define IPCTL_INTRQMAXLEN       10      /* max length of netisr queue */
  485 #define IPCTL_INTRQDROPS        11      /* number of netisr q drops */
  486 #define IPCTL_STATS             12      /* ipstat structure */
  487 #define IPCTL_ACCEPTSOURCEROUTE 13      /* may accept source routed packets */
  488 #define IPCTL_FASTFORWARDING    14      /* use fast IP forwarding code */
  489 #define IPCTL_KEEPFAITH         15      /* FAITH IPv4->IPv6 translater ctl */
  490 #define IPCTL_GIF_TTL           16      /* default TTL for gif encap packet */
  491 #define IPCTL_MAXID             17
  492 
  493 #define IPCTL_NAMES { \
  494         { 0, 0 }, \
  495         { "forwarding", CTLTYPE_INT }, \
  496         { "redirect", CTLTYPE_INT }, \
  497         { "ttl", CTLTYPE_INT }, \
  498         { "mtu", CTLTYPE_INT }, \
  499         { "rtexpire", CTLTYPE_INT }, \
  500         { "rtminexpire", CTLTYPE_INT }, \
  501         { "rtmaxcache", CTLTYPE_INT }, \
  502         { "sourceroute", CTLTYPE_INT }, \
  503         { "directed-broadcast", CTLTYPE_INT }, \
  504         { "intr-queue-maxlen", CTLTYPE_INT }, \
  505         { "intr-queue-drops", CTLTYPE_INT }, \
  506         { "stats", CTLTYPE_STRUCT }, \
  507         { "accept_sourceroute", CTLTYPE_INT }, \
  508         { "fastforwarding", CTLTYPE_INT }, \
  509 }
  510 
  511 #ifdef _KERNEL
  512 struct ifnet; struct mbuf;      /* forward declarations for Standard C */
  513 #endif
  514 
  515 /* INET6 stuff */
  516 #define __KAME_NETINET_IN_H_INCLUDED_
  517 #include <netinet6/in6.h>
  518 #undef __KAME_NETINET_IN_H_INCLUDED_
  519 
  520 #ifdef _KERNEL
  521 
  522 struct thread;
  523 
  524 int      in_broadcast (struct in_addr, struct ifnet *);
  525 int      in_canforward (struct in_addr);
  526 int      in_localaddr (struct in_addr);
  527 char    *inet_ntoa (struct in_addr); /* in libkern */
  528 
  529 int     prison_replace_wildcards (struct thread *td, struct sockaddr *ip);
  530 int     prison_remote_ip (struct thread *td, struct sockaddr *ip);
  531 
  532 #define in_hosteq(s, t) ((s).s_addr == (t).s_addr)
  533 #define in_nullhost(x)  ((x).s_addr == INADDR_ANY)
  534 
  535 #define satosin(sa)     ((struct sockaddr_in *)(sa))
  536 #define sintosa(sin)    ((struct sockaddr *)(sin))
  537 #define ifatoia(ifa)    ((struct in_ifaddr *)(ifa))
  538 
  539 #endif
  540 
  541 #endif

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