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Annotation of XNU/bsd/netinet/in.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * Copyright (c) 1982, 1986, 1990, 1993
        !            24:  *     The Regents of the University of California.  All rights reserved.
        !            25:  *
        !            26:  * Redistribution and use in source and binary forms, with or without
        !            27:  * modification, are permitted provided that the following conditions
        !            28:  * are met:
        !            29:  * 1. Redistributions of source code must retain the above copyright
        !            30:  *    notice, this list of conditions and the following disclaimer.
        !            31:  * 2. Redistributions in binary form must reproduce the above copyright
        !            32:  *    notice, this list of conditions and the following disclaimer in the
        !            33:  *    documentation and/or other materials provided with the distribution.
        !            34:  * 3. All advertising materials mentioning features or use of this software
        !            35:  *    must display the following acknowledgement:
        !            36:  *     This product includes software developed by the University of
        !            37:  *     California, Berkeley and its contributors.
        !            38:  * 4. Neither the name of the University nor the names of its contributors
        !            39:  *    may be used to endorse or promote products derived from this software
        !            40:  *    without specific prior written permission.
        !            41:  *
        !            42:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            43:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            44:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            45:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            46:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            47:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            48:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            49:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            50:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            51:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            52:  * SUCH DAMAGE.
        !            53:  *
        !            54:  *     @(#)in.h        8.3 (Berkeley) 1/3/94
        !            55:  */
        !            56: 
        !            57: #ifndef _NETINET_IN_H_
        !            58: #define _NETINET_IN_H_
        !            59: 
        !            60: /*
        !            61:  * Constants and structures defined by the internet system,
        !            62:  * Per RFC 790, September 1981, and numerous additions.
        !            63:  */
        !            64: 
        !            65: /*
        !            66:  * Protocols (RFC 1700)
        !            67:  */
        !            68: #define        IPPROTO_IP              0               /* dummy for IP */
        !            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_IPIP           4               /* IP encapsulation in IP */
        !            73: #define        IPPROTO_TCP             6               /* tcp */
        !            74: #define        IPPROTO_ST              7               /* Stream protocol II */
        !            75: #define        IPPROTO_EGP             8               /* exterior gateway protocol */
        !            76: #define        IPPROTO_PIGP            9               /* private interior gateway */
        !            77: #define        IPPROTO_RCCMON          10              /* BBN RCC Monitoring */
        !            78: #define        IPPROTO_NVPII           11              /* network voice protocol*/
        !            79: #define        IPPROTO_PUP             12              /* pup */
        !            80: #define        IPPROTO_ARGUS           13              /* Argus */
        !            81: #define        IPPROTO_EMCON           14              /* EMCON */
        !            82: #define        IPPROTO_XNET            15              /* Cross Net Debugger */
        !            83: #define        IPPROTO_CHAOS           16              /* Chaos*/
        !            84: #define        IPPROTO_UDP             17              /* user datagram protocol */
        !            85: #define        IPPROTO_MUX             18              /* Multiplexing */
        !            86: #define        IPPROTO_MEAS            19              /* DCN Measurement Subsystems */
        !            87: #define        IPPROTO_HMP             20              /* Host Monitoring */
        !            88: #define        IPPROTO_PRM             21              /* Packet Radio Measurement */
        !            89: #define        IPPROTO_IDP             22              /* xns idp */
        !            90: #define        IPPROTO_TRUNK1          23              /* Trunk-1 */
        !            91: #define        IPPROTO_TRUNK2          24              /* Trunk-2 */
        !            92: #define        IPPROTO_LEAF1           25              /* Leaf-1 */
        !            93: #define        IPPROTO_LEAF2           26              /* Leaf-2 */
        !            94: #define        IPPROTO_RDP             27              /* Reliable Data */
        !            95: #define        IPPROTO_IRTP            28              /* Reliable Transaction */
        !            96: #define        IPPROTO_TP              29              /* tp-4 w/ class negotiation */
        !            97: #define        IPPROTO_BLT             30              /* Bulk Data Transfer */
        !            98: #define        IPPROTO_NSP             31              /* Network Services */
        !            99: #define        IPPROTO_INP             32              /* Merit Internodal */
        !           100: #define        IPPROTO_SEP             33              /* Sequential Exchange */
        !           101: #define        IPPROTO_3PC             34              /* Third Party Connect */
        !           102: #define        IPPROTO_IDPR            35              /* InterDomain Policy Routing */
        !           103: #define        IPPROTO_XTP             36              /* XTP */
        !           104: #define        IPPROTO_DDP             37              /* Datagram Delivery */
        !           105: #define        IPPROTO_CMTP            38              /* Control Message Transport */
        !           106: #define        IPPROTO_TPXX            39              /* TP++ Transport */
        !           107: #define        IPPROTO_IL              40              /* IL transport protocol */
        !           108: #define        IPPROTO_SIP             41              /* Simple Internet Protocol */
        !           109: #define        IPPROTO_SDRP            42              /* Source Demand Routing */
        !           110: #define        IPPROTO_SIPSR           43              /* SIP Source Route */
        !           111: #define        IPPROTO_SIPFRAG         44              /* SIP Fragment */
        !           112: #define        IPPROTO_IDRP            45              /* InterDomain Routing*/
        !           113: #define IPPROTO_RSVP           46              /* resource reservation */
        !           114: #define        IPPROTO_GRE             47              /* General Routing Encap. */
        !           115: #define        IPPROTO_MHRP            48              /* Mobile Host Routing */
        !           116: #define        IPPROTO_BHA             49              /* BHA */
        !           117: #define        IPPROTO_ESP             50              /* SIPP Encap Sec. Payload */
        !           118: #define        IPPROTO_AH              51              /* SIPP Auth Header */
        !           119: #define        IPPROTO_INLSP           52              /* Integ. Net Layer Security */
        !           120: #define        IPPROTO_SWIPE           53              /* IP with encryption */
        !           121: #define        IPPROTO_NHRP            54              /* Next Hop Resolution */
        !           122: /* 55-60: Unassigned */
        !           123: #define        IPPROTO_AHIP            61              /* any host internal protocol */
        !           124: #define        IPPROTO_CFTP            62              /* CFTP */
        !           125: #define        IPPROTO_HELLO           63              /* "hello" routing protocol */
        !           126: #define        IPPROTO_SATEXPAK        64              /* SATNET/Backroom EXPAK */
        !           127: #define        IPPROTO_KRYPTOLAN       65              /* Kryptolan */
        !           128: #define        IPPROTO_RVD             66              /* Remote Virtual Disk */
        !           129: #define        IPPROTO_IPPC            67              /* Pluribus Packet Core */
        !           130: #define        IPPROTO_ADFS            68              /* Any distributed FS */
        !           131: #define        IPPROTO_SATMON          69              /* Satnet Monitoring */
        !           132: #define        IPPROTO_VISA            70              /* VISA Protocol */
        !           133: #define        IPPROTO_IPCV            71              /* Packet Core Utility */
        !           134: #define        IPPROTO_CPNX            72              /* Comp. Prot. Net. Executive */
        !           135: #define        IPPROTO_CPHB            73              /* Comp. Prot. HeartBeat */
        !           136: #define        IPPROTO_WSN             74              /* Wang Span Network */
        !           137: #define        IPPROTO_PVP             75              /* Packet Video Protocol */
        !           138: #define        IPPROTO_BRSATMON        76              /* BackRoom SATNET Monitoring */
        !           139: #define        IPPROTO_ND              77              /* Sun net disk proto (temp.) */
        !           140: #define        IPPROTO_WBMON           78              /* WIDEBAND Monitoring */
        !           141: #define        IPPROTO_WBEXPAK         79              /* WIDEBAND EXPAK */
        !           142: #define        IPPROTO_EON             80              /* ISO cnlp */
        !           143: #define        IPPROTO_VMTP            81              /* VMTP */
        !           144: #define        IPPROTO_SVMTP           82              /* Secure VMTP */
        !           145: #define        IPPROTO_VINES           83              /* Banyon VINES */
        !           146: #define        IPPROTO_TTP             84              /* TTP */
        !           147: #define        IPPROTO_IGP             85              /* NSFNET-IGP */
        !           148: #define        IPPROTO_DGP             86              /* dissimilar gateway prot. */
        !           149: #define        IPPROTO_TCF             87              /* TCF */
        !           150: #define        IPPROTO_IGRP            88              /* Cisco/GXS IGRP */
        !           151: #define        IPPROTO_OSPFIGP         89              /* OSPFIGP */
        !           152: #define        IPPROTO_SRPC            90              /* Strite RPC protocol */
        !           153: #define        IPPROTO_LARP            91              /* Locus Address Resoloution */
        !           154: #define        IPPROTO_MTP             92              /* Multicast Transport */
        !           155: #define        IPPROTO_AX25            93              /* AX.25 Frames */
        !           156: #define        IPPROTO_IPEIP           94              /* IP encapsulated in IP */
        !           157: #define        IPPROTO_MICP            95              /* Mobile Int.ing control */
        !           158: #define        IPPROTO_SCCSP           96              /* Semaphore Comm. security */
        !           159: #define        IPPROTO_ETHERIP         97              /* Ethernet IP encapsulation */
        !           160: #define        IPPROTO_ENCAP           98              /* encapsulation header */
        !           161: #define        IPPROTO_APES            99              /* any private encr. scheme */
        !           162: #define        IPPROTO_GMTP            100             /* GMTP*/
        !           163: /* 101-254: Unassigned */
        !           164: /* 255: Reserved */
        !           165: /* BSD Private, local use, namespace incursion */
        !           166: #define        IPPROTO_DIVERT          254             /* divert pseudo-protocol */
        !           167: #define        IPPROTO_RAW             255             /* raw IP packet */
        !           168: #define        IPPROTO_MAX             256
        !           169: 
        !           170: 
        !           171: /*
        !           172:  * Local port number conventions:
        !           173:  *
        !           174:  * When a user does a bind(2) or connect(2) with a port number of zero,
        !           175:  * a non-conflicting local port address is chosen.
        !           176:  * The default range is IPPORT_RESERVED through
        !           177:  * IPPORT_USERRESERVED, although that is settable by sysctl.
        !           178:  *
        !           179:  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
        !           180:  * default assignment range.
        !           181:  *
        !           182:  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
        !           183:  *
        !           184:  * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
        !           185:  * into the "high" range.  These are reserved for client outbound connections
        !           186:  * which do not want to be filtered by any firewalls.
        !           187:  *
        !           188:  * The value IP_PORTRANGE_LOW changes the range to the "low" are
        !           189:  * that is (by convention) restricted to privileged processes.  This
        !           190:  * convention is based on "vouchsafe" principles only.  It is only secure
        !           191:  * if you trust the remote host to restrict these ports.
        !           192:  *
        !           193:  * The default range of ports and the high range can be changed by
        !           194:  * sysctl(3).  (net.inet.ip.port{hi,low}{first,last}_auto)
        !           195:  *
        !           196:  * Changing those values has bad security implications if you are
        !           197:  * using a a stateless firewall that is allowing packets outside of that
        !           198:  * range in order to allow transparent outgoing connections.
        !           199:  *
        !           200:  * Such a firewall configuration will generally depend on the use of these
        !           201:  * default values.  If you change them, you may find your Security
        !           202:  * Administrator looking for you with a heavy object.
        !           203:  *
        !           204:  * For a slightly more orthodox text view on this:
        !           205:  *
        !           206:  *            ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
        !           207:  *
        !           208:  *    port numbers are divided into three ranges:
        !           209:  *
        !           210:  *                0 -  1023 Well Known Ports
        !           211:  *             1024 - 49151 Registered Ports
        !           212:  *            49152 - 65535 Dynamic and/or Private Ports
        !           213:  *
        !           214:  */
        !           215: 
        !           216: /*
        !           217:  * Ports < IPPORT_RESERVED are reserved for
        !           218:  * privileged processes (e.g. root).         (IP_PORTRANGE_LOW)
        !           219:  * Ports > IPPORT_USERRESERVED are reserved
        !           220:  * for servers, not necessarily privileged.  (IP_PORTRANGE_DEFAULT)
        !           221:  */
        !           222: #define        IPPORT_RESERVED         1024
        !           223: #define        IPPORT_USERRESERVED     5000
        !           224: 
        !           225: /*
        !           226:  * Default local port range to use by setting IP_PORTRANGE_HIGH
        !           227:  */
        !           228: #define        IPPORT_HIFIRSTAUTO      49152
        !           229: #define        IPPORT_HILASTAUTO       65535
        !           230: 
        !           231: /*
        !           232:  * Scanning for a free reserved port return a value below IPPORT_RESERVED,
        !           233:  * but higher than IPPORT_RESERVEDSTART.  Traditionally the start value was
        !           234:  * 512, but that conflicts with some well-known-services that firewalls may
        !           235:  * have a fit if we use.
        !           236:  */
        !           237: #define IPPORT_RESERVEDSTART   600
        !           238: 
        !           239: /*
        !           240:  * Internet address (a structure for historical reasons)
        !           241:  */
        !           242: struct in_addr {
        !           243:        u_int32_t s_addr;
        !           244: };
        !           245: 
        !           246: /*
        !           247:  * Definitions of bits in internet address integers.
        !           248:  * On subnets, the decomposition of addresses to host and net parts
        !           249:  * is done according to subnet mask, not the masks here.
        !           250:  */
        !           251: #define        IN_CLASSA(i)            (((u_int32_t)(i) & 0x80000000) == 0)
        !           252: #define        IN_CLASSA_NET           0xff000000
        !           253: #define        IN_CLASSA_NSHIFT        24
        !           254: #define        IN_CLASSA_HOST          0x00ffffff
        !           255: #define        IN_CLASSA_MAX           128
        !           256: 
        !           257: #define        IN_CLASSB(i)            (((u_int32_t)(i) & 0xc0000000) == 0x80000000)
        !           258: #define        IN_CLASSB_NET           0xffff0000
        !           259: #define        IN_CLASSB_NSHIFT        16
        !           260: #define        IN_CLASSB_HOST          0x0000ffff
        !           261: #define        IN_CLASSB_MAX           65536
        !           262: 
        !           263: #define        IN_CLASSC(i)            (((u_int32_t)(i) & 0xe0000000) == 0xc0000000)
        !           264: #define        IN_CLASSC_NET           0xffffff00
        !           265: #define        IN_CLASSC_NSHIFT        8
        !           266: #define        IN_CLASSC_HOST          0x000000ff
        !           267: 
        !           268: #define        IN_CLASSD(i)            (((u_int32_t)(i) & 0xf0000000) == 0xe0000000)
        !           269: #define        IN_CLASSD_NET           0xf0000000      /* These ones aren't really */
        !           270: #define        IN_CLASSD_NSHIFT        28              /* net and host fields, but */
        !           271: #define        IN_CLASSD_HOST          0x0fffffff      /* routing needn't know.    */
        !           272: #define        IN_MULTICAST(i)         IN_CLASSD(i)
        !           273: 
        !           274: #define        IN_EXPERIMENTAL(i)      (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
        !           275: #define        IN_BADCLASS(i)          (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
        !           276: 
        !           277: #define        INADDR_ANY              (u_int32_t)0x00000000
        !           278: #define        INADDR_LOOPBACK         (u_int32_t)0x7f000001
        !           279: #define        INADDR_BROADCAST        (u_int32_t)0xffffffff   /* must be masked */
        !           280: #ifndef KERNEL
        !           281: #define        INADDR_NONE             0xffffffff              /* -1 return */
        !           282: #endif
        !           283: 
        !           284: #define        INADDR_UNSPEC_GROUP     (u_int32_t)0xe0000000   /* 224.0.0.0 */
        !           285: #define        INADDR_ALLHOSTS_GROUP   (u_int32_t)0xe0000001   /* 224.0.0.1 */
        !           286: #define        INADDR_ALLRTRS_GROUP    (u_int32_t)0xe0000002   /* 224.0.0.2 */
        !           287: #define        INADDR_MAX_LOCAL_GROUP  (u_int32_t)0xe00000ff   /* 224.0.0.255 */
        !           288: 
        !           289: #define        IN_LOOPBACKNET          127                     /* official! */
        !           290: 
        !           291: /*
        !           292:  * Socket address, internet style.
        !           293:  */
        !           294: struct sockaddr_in {
        !           295:        u_char  sin_len;
        !           296:        u_char  sin_family;
        !           297:        u_short sin_port;
        !           298:        struct  in_addr sin_addr;
        !           299:        char    sin_zero[8];
        !           300: };
        !           301: 
        !           302: /*
        !           303:  * Structure used to describe IP options.
        !           304:  * Used to store options internally, to pass them to a process,
        !           305:  * or to restore options retrieved earlier.
        !           306:  * The ip_dst is used for the first-hop gateway when using a source route
        !           307:  * (this gets put into the header proper).
        !           308:  */
        !           309: struct ip_opts {
        !           310:        struct  in_addr ip_dst;         /* first hop, 0 w/o src rt */
        !           311:        char    ip_opts[40];            /* actually variable in size */
        !           312: };
        !           313: 
        !           314: /*
        !           315:  * Options for use with [gs]etsockopt at the IP level.
        !           316:  * First word of comment is data type; bool is stored in int.
        !           317:  */
        !           318: #define        IP_OPTIONS              1    /* buf/ip_opts; set/get IP options */
        !           319: #define        IP_HDRINCL              2    /* int; header is included with data */
        !           320: #define        IP_TOS                  3    /* int; IP type of service and preced. */
        !           321: #define        IP_TTL                  4    /* int; IP time to live */
        !           322: #define        IP_RECVOPTS             5    /* bool; receive all IP opts w/dgram */
        !           323: #define        IP_RECVRETOPTS          6    /* bool; receive IP opts for response */
        !           324: #define        IP_RECVDSTADDR          7    /* bool; receive IP dst addr w/dgram */
        !           325: #define        IP_RETOPTS              8    /* ip_opts; set/get IP options */
        !           326: #define        IP_MULTICAST_IF         9    /* u_char; set/get IP multicast i/f  */
        !           327: #define        IP_MULTICAST_TTL        10   /* u_char; set/get IP multicast ttl */
        !           328: #define        IP_MULTICAST_LOOP       11   /* u_char; set/get IP multicast loopback */
        !           329: #define        IP_ADD_MEMBERSHIP       12   /* ip_mreq; add an IP group membership */
        !           330: #define        IP_DROP_MEMBERSHIP      13   /* ip_mreq; drop an IP group membership */
        !           331: #define IP_MULTICAST_VIF       14   /* set/get IP mcast virt. iface */
        !           332: #define IP_RSVP_ON             15   /* enable RSVP in kernel */
        !           333: #define IP_RSVP_OFF            16   /* disable RSVP in kernel */
        !           334: #define IP_RSVP_VIF_ON         17   /* set RSVP per-vif socket */
        !           335: #define IP_RSVP_VIF_OFF                18   /* unset RSVP per-vif socket */
        !           336: #define IP_PORTRANGE           19   /* int; range to choose for unspec port */
        !           337: #define        IP_RECVIF               20   /* bool; receive reception if w/dgram */
        !           338: #define IP_STRIPHDR            21   /* bool: drop receive of raw IP header */
        !           339: 
        !           340: #define IP_FW_ADD              50   /* add a firewall rule to chain */
        !           341: #define IP_FW_DEL              51   /* delete a firewall rule from chain */
        !           342: #define IP_FW_FLUSH            52   /* flush firewall rule chain */
        !           343: #define IP_FW_ZERO             53   /* clear single/all firewall counter(s) */
        !           344: #define IP_FW_GET              54   /* get entire firewall rule chain */
        !           345: #define IP_NAT                 55   /* set/get NAT opts */
        !           346: 
        !           347: #define        IP_DUMMYNET_CONFIGURE   60   /* add/configure a dummynet pipe */
        !           348: #define        IP_DUMMYNET_DEL         61   /* delete a dummynet pipe from chain */
        !           349: #define        IP_DUMMYNET_FLUSH       62   /* flush dummynet */
        !           350: #define        IP_DUMMYNET_GET         64   /* get entire dummynet pipes */
        !           351: 
        !           352: /*
        !           353:  * Defaults and limits for options
        !           354:  */
        !           355: #define        IP_DEFAULT_MULTICAST_TTL  1     /* normally limit m'casts to 1 hop  */
        !           356: #define        IP_DEFAULT_MULTICAST_LOOP 1     /* normally hear sends if a member  */
        !           357: #define        IP_MAX_MEMBERSHIPS      20      /* per socket */
        !           358: 
        !           359: /*
        !           360:  * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
        !           361:  */
        !           362: struct ip_mreq {
        !           363:        struct  in_addr imr_multiaddr;  /* IP multicast address of group */
        !           364:        struct  in_addr imr_interface;  /* local IP address of interface */
        !           365: };
        !           366: 
        !           367: /*
        !           368:  * Argument for IP_PORTRANGE:
        !           369:  * - which range to search when port is unspecified at bind() or connect()
        !           370:  */
        !           371: #define        IP_PORTRANGE_DEFAULT    0       /* default range */
        !           372: #define        IP_PORTRANGE_HIGH       1       /* "high" - request firewall bypass */
        !           373: #define        IP_PORTRANGE_LOW        2       /* "low" - vouchsafe security */
        !           374: 
        !           375: /*
        !           376:  * Definitions for inet sysctl operations.
        !           377:  *
        !           378:  * Third level is protocol number.
        !           379:  * Fourth level is desired variable within that protocol.
        !           380:  */
        !           381: #define        IPPROTO_MAXID   (IPPROTO_IDP + 1)       /* don't list to IPPROTO_MAX */
        !           382: 
        !           383: #define        CTL_IPPROTO_NAMES { \
        !           384:        { "ip", CTLTYPE_NODE }, \
        !           385:        { "icmp", CTLTYPE_NODE }, \
        !           386:        { "igmp", CTLTYPE_NODE }, \
        !           387:        { "ggp", CTLTYPE_NODE }, \
        !           388:        { 0, 0 }, \
        !           389:        { 0, 0 }, \
        !           390:        { "tcp", CTLTYPE_NODE }, \
        !           391:        { 0, 0 }, \
        !           392:        { "egp", CTLTYPE_NODE }, \
        !           393:        { 0, 0 }, \
        !           394:        { 0, 0 }, \
        !           395:        { 0, 0 }, \
        !           396:        { "pup", CTLTYPE_NODE }, \
        !           397:        { 0, 0 }, \
        !           398:        { 0, 0 }, \
        !           399:        { 0, 0 }, \
        !           400:        { 0, 0 }, \
        !           401:        { "udp", CTLTYPE_NODE }, \
        !           402:        { 0, 0 }, \
        !           403:        { 0, 0 }, \
        !           404:        { 0, 0 }, \
        !           405:        { 0, 0 }, \
        !           406:        { "idp", CTLTYPE_NODE }, \
        !           407: }
        !           408: 
        !           409: /*
        !           410:  * Names for IP sysctl objects
        !           411:  */
        !           412: #define        IPCTL_FORWARDING        1       /* act as router */
        !           413: #define        IPCTL_SENDREDIRECTS     2       /* may send redirects when forwarding */
        !           414: #define        IPCTL_DEFTTL            3       /* default TTL */
        !           415: #ifdef notyet
        !           416: #define        IPCTL_DEFMTU            4       /* default MTU */
        !           417: #endif
        !           418: #define IPCTL_RTEXPIRE         5       /* cloned route expiration time */
        !           419: #define IPCTL_RTMINEXPIRE      6       /* min value for expiration time */
        !           420: #define IPCTL_RTMAXCACHE       7       /* trigger level for dynamic expire */
        !           421: #define        IPCTL_SOURCEROUTE       8       /* may perform source routes */
        !           422: #define        IPCTL_DIRECTEDBROADCAST 9       /* may re-broadcast received packets */
        !           423: #define IPCTL_INTRQMAXLEN      10      /* max length of netisr queue */
        !           424: #define IPCTL_INTRQDROPS       11      /* number of netisr q drops */
        !           425: #define        IPCTL_STATS             12      /* ipstat structure */
        !           426: #define        IPCTL_ACCEPTSOURCEROUTE 13      /* may accept source routed packets */
        !           427: #define IPCTL_FASTFORWARDING   14      /* use fast IP forwarding code */
        !           428: #define        IPCTL_MAXID             15
        !           429: 
        !           430: #define        IPCTL_NAMES { \
        !           431:        { 0, 0 }, \
        !           432:        { "forwarding", CTLTYPE_INT }, \
        !           433:        { "redirect", CTLTYPE_INT }, \
        !           434:        { "ttl", CTLTYPE_INT }, \
        !           435:        { "mtu", CTLTYPE_INT }, \
        !           436:        { "rtexpire", CTLTYPE_INT }, \
        !           437:        { "rtminexpire", CTLTYPE_INT }, \
        !           438:        { "rtmaxcache", CTLTYPE_INT }, \
        !           439:        { "sourceroute", CTLTYPE_INT }, \
        !           440:        { "directed-broadcast", CTLTYPE_INT }, \
        !           441:        { "intr-queue-maxlen", CTLTYPE_INT }, \
        !           442:        { "intr-queue-drops", CTLTYPE_INT }, \
        !           443:        { "stats", CTLTYPE_STRUCT }, \
        !           444:        { "accept_sourceroute", CTLTYPE_INT }, \
        !           445:        { "fastforwarding", CTLTYPE_INT }, \
        !           446: }
        !           447: 
        !           448: 
        !           449: #ifdef KERNEL
        !           450: struct ifnet; struct mbuf;     /* forward declarations for Standard C */
        !           451: 
        !           452: int     in_broadcast __P((struct in_addr, struct ifnet *));
        !           453: int     in_canforward __P((struct in_addr));
        !           454: int     in_cksum __P((struct mbuf *, int));
        !           455: int     in_localaddr __P((struct in_addr));
        !           456: char   *inet_ntoa __P((struct in_addr)); /* in libkern */
        !           457: 
        !           458: #endif /* KERNEL */
        !           459: 
        !           460: #endif

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