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Annotation of src/sys/sys/socket.h, Revision 1.89.20.1

1.89.20.1! mjf         1: /*     $NetBSD$        */
1.44      itojun      2:
                      3: /*
                      4:  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
                      5:  * All rights reserved.
1.71      perry       6:  *
1.44      itojun      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 project 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.
1.71      perry      18:  *
1.44      itojun     19:  * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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:  */
1.10      cgd        31:
1.1       cgd        32: /*
1.8       mycroft    33:  * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
                     34:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd        35:  *
                     36:  * Redistribution and use in source and binary forms, with or without
                     37:  * modification, are permitted provided that the following conditions
                     38:  * are met:
                     39:  * 1. Redistributions of source code must retain the above copyright
                     40:  *    notice, this list of conditions and the following disclaimer.
                     41:  * 2. Redistributions in binary form must reproduce the above copyright
                     42:  *    notice, this list of conditions and the following disclaimer in the
                     43:  *    documentation and/or other materials provided with the distribution.
1.68      agc        44:  * 3. Neither the name of the University nor the names of its contributors
1.1       cgd        45:  *    may be used to endorse or promote products derived from this software
                     46:  *    without specific prior written permission.
                     47:  *
                     48:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     49:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     50:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     51:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     52:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     53:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     54:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     55:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     56:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     57:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     58:  * SUCH DAMAGE.
                     59:  *
1.28      fvdl       60:  *     @(#)socket.h    8.6 (Berkeley) 5/3/95
1.1       cgd        61:  */
                     62:
1.2       mycroft    63: #ifndef _SYS_SOCKET_H_
1.8       mycroft    64: #define        _SYS_SOCKET_H_
1.2       mycroft    65:
1.67      bjh21      66: #include <sys/featuretest.h>
                     67:
1.1       cgd        68: /*
                     69:  * Definitions related to sockets: types, address families, options.
                     70:  */
                     71:
                     72: /*
1.42      kleink     73:  * Data types.
                     74:  */
1.55      itojun     75: #include <sys/ansi.h>
1.56      kleink     76:
                     77: #ifndef sa_family_t
                     78: typedef __sa_family_t  sa_family_t;
1.58      kleink     79: #define sa_family_t    __sa_family_t
1.56      kleink     80: #endif
                     81:
1.55      itojun     82: #ifndef socklen_t
                     83: typedef __socklen_t    socklen_t;
1.58      kleink     84: #define socklen_t      __socklen_t
1.55      itojun     85: #endif
1.42      kleink     86:
1.63      kleink     87: #include <machine/ansi.h>
                     88:
                     89: #ifdef _BSD_SIZE_T_
                     90: typedef        _BSD_SIZE_T_    size_t;
                     91: #undef _BSD_SIZE_T_
                     92: #endif
                     93:
                     94: #ifdef _BSD_SSIZE_T_
                     95: typedef        _BSD_SSIZE_T_   ssize_t;
                     96: #undef _BSD_SSIZE_T_
                     97: #endif
                     98:
                     99: #include <sys/uio.h>
                    100:
1.42      kleink    101: /*
                    102:  * Socket types.
1.1       cgd       103:  */
                    104: #define        SOCK_STREAM     1               /* stream socket */
                    105: #define        SOCK_DGRAM      2               /* datagram socket */
                    106: #define        SOCK_RAW        3               /* raw-protocol interface */
                    107: #define        SOCK_RDM        4               /* reliably-delivered message */
                    108: #define        SOCK_SEQPACKET  5               /* sequenced packet stream */
                    109:
                    110: /*
                    111:  * Option flags per-socket.
                    112:  */
                    113: #define        SO_DEBUG        0x0001          /* turn on debugging info recording */
                    114: #define        SO_ACCEPTCONN   0x0002          /* socket has had listen() */
                    115: #define        SO_REUSEADDR    0x0004          /* allow local address reuse */
                    116: #define        SO_KEEPALIVE    0x0008          /* keep connections alive */
                    117: #define        SO_DONTROUTE    0x0010          /* just use interface addresses */
                    118: #define        SO_BROADCAST    0x0020          /* permit sending of broadcast msgs */
                    119: #define        SO_USELOOPBACK  0x0040          /* bypass hardware when possible */
                    120: #define        SO_LINGER       0x0080          /* linger on close if data present */
                    121: #define        SO_OOBINLINE    0x0100          /* leave received OOB data in line */
1.8       mycroft   122: #define        SO_REUSEPORT    0x0200          /* allow local address & port reuse */
1.18      thorpej   123: #define        SO_TIMESTAMP    0x0400          /* timestamp received dgram traffic */
1.1       cgd       124:
1.79      christos  125:
1.1       cgd       126: /*
                    127:  * Additional options, not kept in so_options.
                    128:  */
                    129: #define SO_SNDBUF      0x1001          /* send buffer size */
                    130: #define SO_RCVBUF      0x1002          /* receive buffer size */
                    131: #define SO_SNDLOWAT    0x1003          /* send low-water mark */
                    132: #define SO_RCVLOWAT    0x1004          /* receive low-water mark */
                    133: #define SO_SNDTIMEO    0x1005          /* send timeout */
                    134: #define SO_RCVTIMEO    0x1006          /* receive timeout */
                    135: #define        SO_ERROR        0x1007          /* get error status and clear */
                    136: #define        SO_TYPE         0x1008          /* get socket type */
1.69      darrenr   137: #define        SO_OVERFLOWED   0x1009          /* datagrams: return packets dropped */
1.1       cgd       138:
1.89      dyoung    139: #define        SO_NOHEADER     0x100a          /* user supplies no header to kernel;
                    140:                                         * kernel removes header and supplies
                    141:                                         * payload
                    142:                                         */
1.1       cgd       143: /*
                    144:  * Structure used for manipulating linger option.
                    145:  */
                    146: struct linger {
                    147:        int     l_onoff;                /* option on/off */
1.28      fvdl      148:        int     l_linger;               /* linger time in seconds */
1.1       cgd       149: };
                    150:
                    151: /*
                    152:  * Level number for (get/set)sockopt() to apply to socket itself.
                    153:  */
                    154: #define        SOL_SOCKET      0xffff          /* options for socket level */
                    155:
                    156: /*
                    157:  * Address families.
                    158:  */
                    159: #define        AF_UNSPEC       0               /* unspecified */
1.8       mycroft   160: #define        AF_LOCAL        1               /* local to host (pipes, portals) */
                    161: #define        AF_UNIX         AF_LOCAL        /* backward compatibility */
1.1       cgd       162: #define        AF_INET         2               /* internetwork: UDP, TCP, etc. */
                    163: #define        AF_IMPLINK      3               /* arpanet imp addresses */
                    164: #define        AF_PUP          4               /* pup protocols: e.g. BSP */
                    165: #define        AF_CHAOS        5               /* mit CHAOS protocols */
                    166: #define        AF_NS           6               /* XEROX NS protocols */
                    167: #define        AF_ISO          7               /* ISO protocols */
                    168: #define        AF_OSI          AF_ISO
                    169: #define        AF_ECMA         8               /* european computer manufacturers */
                    170: #define        AF_DATAKIT      9               /* datakit protocols */
                    171: #define        AF_CCITT        10              /* CCITT protocols, X.25 etc */
                    172: #define        AF_SNA          11              /* IBM SNA */
                    173: #define AF_DECnet      12              /* DECnet */
                    174: #define AF_DLI         13              /* DEC Direct data link interface */
                    175: #define AF_LAT         14              /* LAT */
                    176: #define        AF_HYLINK       15              /* NSC Hyperchannel */
                    177: #define        AF_APPLETALK    16              /* Apple Talk */
                    178: #define        AF_ROUTE        17              /* Internal Routing Protocol */
                    179: #define        AF_LINK         18              /* Link layer interface */
1.67      bjh21     180: #if defined(_NETBSD_SOURCE)
1.1       cgd       181: #define        pseudo_AF_XTP   19              /* eXpress Transfer Protocol (no AF) */
1.42      kleink    182: #endif
1.8       mycroft   183: #define        AF_COIP         20              /* connection-oriented IP, aka ST II */
                    184: #define        AF_CNT          21              /* Computer Network Technology */
1.67      bjh21     185: #if defined(_NETBSD_SOURCE)
1.8       mycroft   186: #define pseudo_AF_RTIP 22              /* Help Identify RTIP packets */
1.42      kleink    187: #endif
1.8       mycroft   188: #define        AF_IPX          23              /* Novell Internet Protocol */
1.21      sommerfe  189: #define        AF_INET6        24              /* IP version 6 */
1.67      bjh21     190: #if defined(_NETBSD_SOURCE)
1.8       mycroft   191: #define pseudo_AF_PIP  25              /* Help Identify PIP packets */
1.42      kleink    192: #endif
1.17      chuck     193: #define AF_ISDN                26              /* Integrated Services Digital Network*/
                    194: #define AF_E164                AF_ISDN         /* CCITT E.164 recommendation */
                    195: #define AF_NATM                27              /* native ATM access */
1.19      is        196: #define AF_ARP         28              /* (rev.) addr. res. prot. (RFC 826) */
1.67      bjh21     197: #if defined(_NETBSD_SOURCE)
1.21      sommerfe  198: #define pseudo_AF_KEY  29              /* Internal key management protocol  */
1.31      thorpej   199: #define        pseudo_AF_HDRCMPLT 30           /* Used by BPF to not rewrite hdrs
                    200:                                           in interface output routine */
1.42      kleink    201: #endif
1.83      plunky    202: #define AF_BLUETOOTH   31              /* Bluetooth: HCI, SCO, L2CAP, RFCOMM */
1.89.20.1! mjf       203: #define        AF_IEEE80211    32              /* IEEE80211 */
1.1       cgd       204:
1.89.20.1! mjf       205: #define        AF_MAX          33
1.1       cgd       206:
                    207: /*
1.26      thorpej   208:  * Structure used by kernel to store most
                    209:  * addresses.
1.1       cgd       210:  */
                    211: struct sockaddr {
1.63      kleink    212:        __uint8_t       sa_len;         /* total length */
1.56      kleink    213:        sa_family_t     sa_family;      /* address family */
                    214:        char            sa_data[14];    /* actually longer; address value */
1.26      thorpej   215: };
1.1       cgd       216:
1.42      kleink    217: #if defined(_KERNEL)
1.1       cgd       218: /*
                    219:  * Structure used by kernel to pass protocol
                    220:  * information in raw sockets.
                    221:  */
                    222: struct sockproto {
                    223:        u_short sp_family;              /* address family */
                    224:        u_short sp_protocol;            /* protocol */
                    225: };
1.42      kleink    226: #endif /* _KERNEL */
1.1       cgd       227:
1.44      itojun    228: #if 1
                    229: /*
                    230:  * RFC 2553: protocol-independent placeholder for socket addresses
                    231:  */
                    232: #define _SS_MAXSIZE    128
1.63      kleink    233: #define _SS_ALIGNSIZE  (sizeof(__int64_t))
1.60      kleink    234: #define _SS_PAD1SIZE   (_SS_ALIGNSIZE - 2)
                    235: #define _SS_PAD2SIZE   (_SS_MAXSIZE - 2 - \
1.44      itojun    236:                                _SS_PAD1SIZE - _SS_ALIGNSIZE)
                    237:
1.67      bjh21     238: #if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
1.44      itojun    239: struct sockaddr_storage {
1.63      kleink    240:        __uint8_t       ss_len;         /* address length */
1.56      kleink    241:        sa_family_t     ss_family;      /* address family */
                    242:        char            __ss_pad1[_SS_PAD1SIZE];
1.63      kleink    243:        __int64_t     __ss_align;/* force desired structure storage alignment */
1.56      kleink    244:        char            __ss_pad2[_SS_PAD2SIZE];
1.44      itojun    245: };
1.89      dyoung    246: #define        sstosa(__ss)    ((struct sockaddr *)(__ss))
                    247: #define        sstocsa(__ss)   ((const struct sockaddr *)(__ss))
1.67      bjh21     248: #endif /* _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
1.46      kleink    249: #endif /* 1 */
1.44      itojun    250:
1.1       cgd       251: /*
                    252:  * Protocol families, same as address families for now.
                    253:  */
                    254: #define        PF_UNSPEC       AF_UNSPEC
1.8       mycroft   255: #define        PF_LOCAL        AF_LOCAL
                    256: #define        PF_UNIX         PF_LOCAL        /* backward compatibility */
1.1       cgd       257: #define        PF_INET         AF_INET
                    258: #define        PF_IMPLINK      AF_IMPLINK
                    259: #define        PF_PUP          AF_PUP
                    260: #define        PF_CHAOS        AF_CHAOS
                    261: #define        PF_NS           AF_NS
                    262: #define        PF_ISO          AF_ISO
                    263: #define        PF_OSI          AF_ISO
                    264: #define        PF_ECMA         AF_ECMA
                    265: #define        PF_DATAKIT      AF_DATAKIT
                    266: #define        PF_CCITT        AF_CCITT
                    267: #define        PF_SNA          AF_SNA
                    268: #define PF_DECnet      AF_DECnet
                    269: #define PF_DLI         AF_DLI
                    270: #define PF_LAT         AF_LAT
                    271: #define        PF_HYLINK       AF_HYLINK
                    272: #define        PF_APPLETALK    AF_APPLETALK
                    273: #define        PF_ROUTE        AF_ROUTE
                    274: #define        PF_LINK         AF_LINK
1.67      bjh21     275: #if defined(_NETBSD_SOURCE)
1.1       cgd       276: #define        PF_XTP          pseudo_AF_XTP   /* really just proto family, no AF */
1.42      kleink    277: #endif
1.8       mycroft   278: #define        PF_COIP         AF_COIP
                    279: #define        PF_CNT          AF_CNT
1.21      sommerfe  280: #define        PF_INET6        AF_INET6
1.8       mycroft   281: #define        PF_IPX          AF_IPX          /* same format as AF_NS */
1.67      bjh21     282: #if defined(_NETBSD_SOURCE)
1.72      kleink    283: #define PF_RTIP                pseudo_AF_RTIP  /* same format as AF_INET */
1.8       mycroft   284: #define PF_PIP         pseudo_AF_PIP
1.42      kleink    285: #endif
1.20      is        286: #define PF_ISDN                AF_ISDN         /* same as E164 */
                    287: #define PF_E164                AF_E164
1.17      chuck     288: #define PF_NATM                AF_NATM
1.19      is        289: #define PF_ARP         AF_ARP
1.67      bjh21     290: #if defined(_NETBSD_SOURCE)
1.21      sommerfe  291: #define PF_KEY                 pseudo_AF_KEY   /* like PF_ROUTE, only for key mgmt */
1.42      kleink    292: #endif
1.80      gdamore   293: #define PF_BLUETOOTH   AF_BLUETOOTH
1.1       cgd       294:
                    295: #define        PF_MAX          AF_MAX
                    296:
1.67      bjh21     297: #if defined(_NETBSD_SOURCE)
1.63      kleink    298:
                    299: #ifndef        gid_t
                    300: typedef        __gid_t         gid_t;          /* group id */
                    301: #define        gid_t           __gid_t
                    302: #endif
                    303:
                    304: #ifndef        uid_t
                    305: typedef        __uid_t         uid_t;          /* user id */
                    306: #define        uid_t           __uid_t
                    307: #endif
                    308:
1.1       cgd       309: /*
1.27      thorpej   310:  * Socket credentials.
                    311:  */
                    312: struct sockcred {
                    313:        uid_t   sc_uid;                 /* real user id */
                    314:        uid_t   sc_euid;                /* effective user id */
                    315:        gid_t   sc_gid;                 /* real group id */
                    316:        gid_t   sc_egid;                /* effective group id */
                    317:        int     sc_ngroups;             /* number of supplemental groups */
                    318:        gid_t   sc_groups[1];           /* variable length */
                    319: };
                    320:
                    321: /*
                    322:  * Compute size of a sockcred structure with groups.
                    323:  */
                    324: #define        SOCKCREDSIZE(ngrps) \
                    325:        (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
1.67      bjh21     326: #endif /* _NETBSD_SOURCE */
1.27      thorpej   327:
1.38      kleink    328:
1.67      bjh21     329: #if defined(_NETBSD_SOURCE)
1.27      thorpej   330: /*
1.8       mycroft   331:  * Definitions for network related sysctl, CTL_NET.
                    332:  *
                    333:  * Second level is protocol family.
                    334:  * Third level is protocol number.
                    335:  *
                    336:  * Further levels are defined by the individual families below.
                    337:  */
                    338: #define NET_MAXID      AF_MAX
                    339:
                    340: #define CTL_NET_NAMES { \
                    341:        { 0, 0 }, \
1.28      fvdl      342:        { "local", CTLTYPE_NODE }, \
1.8       mycroft   343:        { "inet", CTLTYPE_NODE }, \
                    344:        { "implink", CTLTYPE_NODE }, \
                    345:        { "pup", CTLTYPE_NODE }, \
                    346:        { "chaos", CTLTYPE_NODE }, \
                    347:        { "xerox_ns", CTLTYPE_NODE }, \
                    348:        { "iso", CTLTYPE_NODE }, \
                    349:        { "emca", CTLTYPE_NODE }, \
                    350:        { "datakit", CTLTYPE_NODE }, \
                    351:        { "ccitt", CTLTYPE_NODE }, \
                    352:        { "ibm_sna", CTLTYPE_NODE }, \
                    353:        { "decnet", CTLTYPE_NODE }, \
                    354:        { "dec_dli", CTLTYPE_NODE }, \
                    355:        { "lat", CTLTYPE_NODE }, \
                    356:        { "hylink", CTLTYPE_NODE }, \
                    357:        { "appletalk", CTLTYPE_NODE }, \
                    358:        { "route", CTLTYPE_NODE }, \
                    359:        { "link_layer", CTLTYPE_NODE }, \
                    360:        { "xtp", CTLTYPE_NODE }, \
                    361:        { "coip", CTLTYPE_NODE }, \
                    362:        { "cnt", CTLTYPE_NODE }, \
                    363:        { "rtip", CTLTYPE_NODE }, \
                    364:        { "ipx", CTLTYPE_NODE }, \
1.21      sommerfe  365:        { "inet6", CTLTYPE_NODE }, \
1.8       mycroft   366:        { "pip", CTLTYPE_NODE }, \
1.20      is        367:        { "isdn", CTLTYPE_NODE }, \
1.17      chuck     368:        { "natm", CTLTYPE_NODE }, \
1.20      is        369:        { "arp", CTLTYPE_NODE }, \
1.21      sommerfe  370:        { "key", CTLTYPE_NODE }, \
1.8       mycroft   371: }
1.73      atatat    372:
                    373: struct kinfo_pcb {
1.75      tron      374:        __uint64_t      ki_pcbaddr;     /* PTR: pcb addr */
                    375:        __uint64_t      ki_ppcbaddr;    /* PTR: ppcb addr */
                    376:        __uint64_t      ki_sockaddr;    /* PTR: socket addr */
                    377:
                    378:        __uint32_t      ki_family;      /* INT: protocol family */
                    379:        __uint32_t      ki_type;        /* INT: socket type */
                    380:        __uint32_t      ki_protocol;    /* INT: protocol */
                    381:        __uint32_t      ki_pflags;      /* INT: generic protocol flags */
                    382:
                    383:        __uint32_t      ki_sostate;     /* INT: socket state */
                    384:        __uint32_t      ki_prstate;     /* INT: protocol state */
                    385:        __int32_t       ki_tstate;      /* INT: tcp state */
                    386:        __uint32_t      ki_tflags;      /* INT: tcp flags */
1.73      atatat    387:
1.75      tron      388:        __uint64_t      ki_rcvq;        /* U_LONG: receive queue len */
                    389:        __uint64_t      ki_sndq;        /* U_LONG: send queue len */
1.73      atatat    390:
                    391:        union {
                    392:                struct sockaddr _kis_src; /* STRUCT: local address */
                    393:                char _kis_pad[256 + 8];         /* pad to max addr length */
                    394:        } ki_s;
                    395:        union {
                    396:                struct sockaddr _kid_dst; /* STRUCT: remote address */
                    397:                char _kid_pad[256 + 8];         /* pad to max addr length */
                    398:        } ki_d;
                    399:
1.75      tron      400:        __uint64_t      ki_inode;       /* INO_T: fake inode number */
                    401:        __uint64_t      ki_vnode;       /* PTR: if associated with file */
                    402:        __uint64_t      ki_conn;        /* PTR: control block of peer */
                    403:        __uint64_t      ki_refs;        /* PTR: referencing socket */
                    404:        __uint64_t      ki_nextref;     /* PTR: link in refs list */
1.73      atatat    405: };
                    406:
                    407: #define ki_src ki_s._kis_src
                    408: #define ki_dst ki_d._kid_dst
                    409:
                    410: #define PCB_SLOP               20
                    411: #define PCB_ALL                        0
                    412:
1.67      bjh21     413: #endif /* _NETBSD_SOURCE */
1.8       mycroft   414:
1.67      bjh21     415: #if defined(_NETBSD_SOURCE)
1.8       mycroft   416: /*
                    417:  * PF_ROUTE - Routing table
                    418:  *
                    419:  * Three additional levels are defined:
                    420:  *     Fourth: address family, 0 is wildcard
                    421:  *     Fifth: type of info, defined below
                    422:  *     Sixth: flag(s) to mask with for NET_RT_FLAGS
                    423:  */
                    424: #define NET_RT_DUMP    1               /* dump; may limit to a.f. */
                    425: #define NET_RT_FLAGS   2               /* by flags, e.g. RESOLVING */
1.47      bouyer    426: #define NET_RT_OIFLIST 3               /* old NET_RT_IFLIST (pre 1.5) */
                    427: #define NET_RT_IFLIST  4               /* survey interface list */
                    428: #define        NET_RT_MAXID    5
1.8       mycroft   429:
                    430: #define CTL_NET_RT_NAMES { \
                    431:        { 0, 0 }, \
                    432:        { "dump", CTLTYPE_STRUCT }, \
                    433:        { "flags", CTLTYPE_STRUCT }, \
1.47      bouyer    434:        { 0, 0 }, \
1.8       mycroft   435:        { "iflist", CTLTYPE_STRUCT }, \
                    436: }
1.67      bjh21     437: #endif /* _NETBSD_SOURCE */
1.8       mycroft   438:
                    439: /*
1.13      mycroft   440:  * Maximum queue length specifiable by listen(2).
1.1       cgd       441:  */
1.66      christos  442: #ifndef SOMAXCONN
1.13      mycroft   443: #define        SOMAXCONN       128
1.66      christos  444: #endif
1.16      neil      445:
1.1       cgd       446: /*
                    447:  * Message header for recvmsg and sendmsg calls.
                    448:  * Used value-result for recvmsg, value only for sendmsg.
                    449:  */
                    450: struct msghdr {
1.42      kleink    451:        void            *msg_name;      /* optional address */
                    452:        socklen_t       msg_namelen;    /* size of address */
                    453:        struct iovec    *msg_iov;       /* scatter/gather array */
                    454:        int             msg_iovlen;     /* # elements in msg_iov */
                    455:        void            *msg_control;   /* ancillary data, see below */
                    456:        socklen_t       msg_controllen; /* ancillary data buffer len */
                    457:        int             msg_flags;      /* flags on received message */
1.1       cgd       458: };
                    459:
1.79      christos  460: #define        MSG_OOB         0x0001          /* process out-of-band data */
                    461: #define        MSG_PEEK        0x0002          /* peek at incoming message */
                    462: #define        MSG_DONTROUTE   0x0004          /* send without using routing tables */
                    463: #define        MSG_EOR         0x0008          /* data completes record */
                    464: #define        MSG_TRUNC       0x0010          /* data discarded before delivery */
                    465: #define        MSG_CTRUNC      0x0020          /* control data lost before delivery */
                    466: #define        MSG_WAITALL     0x0040          /* wait for full request or error */
                    467: #define        MSG_DONTWAIT    0x0080          /* this message should be nonblocking */
                    468: #define        MSG_BCAST       0x0100          /* this message was rcvd using link-level brdcst */
                    469: #define        MSG_MCAST       0x0200          /* this message was rcvd using link-level mcast */
                    470: #define        MSG_NOSIGNAL    0x0400          /* do not generate SIGPIPE on EOF */
1.1       cgd       471:
1.86      dsl       472: /* Extra flags used internally only */
                    473: #define        MSG_USERFLAGS   0x0ffffff
                    474: #define MSG_NAMEMBUF   0x1000000       /* msg_name is an mbuf */
                    475: #define MSG_CONTROLMBUF        0x2000000       /* msg_control is an mbuf */
                    476: #define MSG_IOVUSRSPACE        0x4000000       /* msg_iov is in user space */
1.87      dsl       477: #define MSG_LENUSRSPACE        0x8000000       /* address length is in user space */
1.86      dsl       478:
1.1       cgd       479: /*
                    480:  * Header for ancillary data objects in msg_control buffer.
                    481:  * Used for additional information with/about a datagram
                    482:  * not expressible by flags.  The format is a sequence
                    483:  * of message elements headed by cmsghdr structures.
                    484:  */
                    485: struct cmsghdr {
1.42      kleink    486:        socklen_t       cmsg_len;       /* data byte count, including hdr */
                    487:        int             cmsg_level;     /* originating protocol */
                    488:        int             cmsg_type;      /* protocol-specific type */
1.1       cgd       489: /* followed by u_char  cmsg_data[]; */
                    490: };
                    491:
1.8       mycroft   492: /* given pointer to struct cmsghdr, return pointer to data */
1.50      itojun    493: #define        CMSG_DATA(cmsg) \
1.57      christos  494:        ((u_char *)(void *)(cmsg) + __CMSG_ALIGN(sizeof(struct cmsghdr)))
1.77      christos  495: #define        CCMSG_DATA(cmsg) \
                    496:        ((const u_char *)(const void *)(cmsg) + \
                    497:        __CMSG_ALIGN(sizeof(struct cmsghdr)))
1.1       cgd       498:
1.44      itojun    499: /*
                    500:  * Alignment requirement for CMSG struct manipulation.
1.51      itojun    501:  * This basically behaves the same as ALIGN() ARCH/include/param.h.
                    502:  * We declare it separately for two reasons:
                    503:  * (1) avoid dependency between machine/param.h, and (2) to sync with kernel's
                    504:  * idea of ALIGNBYTES at runtime.
                    505:  * without (2), we can't guarantee binary compatibility in case of future
                    506:  * changes in ALIGNBYTES.
1.44      itojun    507:  */
1.53      itojun    508: #define __CMSG_ALIGN(n)        (((n) + __cmsg_alignbytes()) & ~__cmsg_alignbytes())
                    509: #ifdef _KERNEL
1.54      augustss  510: #define CMSG_ALIGN(n)  __CMSG_ALIGN(n)
1.53      itojun    511: #endif
1.44      itojun    512:
1.8       mycroft   513: /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
1.1       cgd       514: #define        CMSG_NXTHDR(mhdr, cmsg) \
1.84      christos  515:        (((char *)(cmsg) + __CMSG_ALIGN((cmsg)->cmsg_len) + \
1.53      itojun    516:                            __CMSG_ALIGN(sizeof(struct cmsghdr)) > \
1.84      christos  517:            (((char *)(mhdr)->msg_control) + (mhdr)->msg_controllen)) ? \
1.78      kleink    518:            (struct cmsghdr *)0 : \
1.84      christos  519:            (struct cmsghdr *)((char *)(cmsg) + \
1.63      kleink    520:                __CMSG_ALIGN((cmsg)->cmsg_len)))
1.1       cgd       521:
1.62      itojun    522: /*
                    523:  * RFC 2292 requires to check msg_controllen, in case that the kernel returns
                    524:  * an empty list for some reasons.
                    525:  */
                    526: #define        CMSG_FIRSTHDR(mhdr) \
                    527:        ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
                    528:         (struct cmsghdr *)(mhdr)->msg_control : \
1.78      kleink    529:         (struct cmsghdr *)0)
1.1       cgd       530:
1.53      itojun    531: #define CMSG_SPACE(l)  (__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(l))
                    532: #define CMSG_LEN(l)    (__CMSG_ALIGN(sizeof(struct cmsghdr)) + (l))
1.44      itojun    533:
1.1       cgd       534: /* "Socket"-level control message types: */
                    535: #define        SCM_RIGHTS      0x01            /* access rights (array of int) */
1.67      bjh21     536: #if defined(_NETBSD_SOURCE)
1.18      thorpej   537: #define        SCM_TIMESTAMP   0x02            /* timestamp (struct timeval) */
1.42      kleink    538: #define        SCM_CREDS       0x04            /* credentials (struct sockcred) */
                    539: #endif
1.29      kleink    540:
                    541: /*
                    542:  * Types of socket shutdown(2).
                    543:  */
                    544: #define        SHUT_RD         0               /* Disallow further receives. */
                    545: #define        SHUT_WR         1               /* Disallow further sends. */
                    546: #define        SHUT_RDWR       2               /* Disallow further sends/receives. */
1.1       cgd       547:
1.59      toshii    548: #include <sys/cdefs.h>
                    549:
                    550: __BEGIN_DECLS
1.70      perry     551: int    __cmsg_alignbytes(void);
1.59      toshii    552: __END_DECLS
1.1       cgd       553:
1.85      dyoung    554: #ifdef _KERNEL
1.89      dyoung    555: static inline socklen_t
                    556: sockaddr_getlen(const struct sockaddr *sa)
                    557: {
                    558:        return sa->sa_len;
                    559: }
                    560:
1.85      dyoung    561: __BEGIN_DECLS
1.88      dyoung    562: struct sockaddr *sockaddr_copy(struct sockaddr *, socklen_t,
                    563:     const struct sockaddr *);
                    564: struct sockaddr *sockaddr_alloc(sa_family_t, socklen_t, int);
1.89      dyoung    565: const void *sockaddr_const_addr(const struct sockaddr *, socklen_t *);
                    566: void *sockaddr_addr(struct sockaddr *, socklen_t *);
                    567: const struct sockaddr *sockaddr_any(const struct sockaddr *);
                    568: const void *sockaddr_anyaddr(const struct sockaddr *, socklen_t *);
1.85      dyoung    569: int sockaddr_cmp(const struct sockaddr *, const struct sockaddr *);
                    570: struct sockaddr *sockaddr_dup(const struct sockaddr *, int);
                    571: void sockaddr_free(struct sockaddr *);
                    572: __END_DECLS
                    573: #endif /* _KERNEL */
                    574:
1.12      briggs    575: #ifndef        _KERNEL
1.1       cgd       576:
                    577: __BEGIN_DECLS
1.70      perry     578: int    accept(int, struct sockaddr * __restrict, socklen_t * __restrict);
                    579: int    bind(int, const struct sockaddr *, socklen_t);
                    580: int    connect(int, const struct sockaddr *, socklen_t);
                    581: int    getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict);
                    582: int    getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict);
1.84      christos  583: int    getsockopt(int, int, int, void *__restrict, socklen_t * __restrict);
1.70      perry     584: int    listen(int, int);
                    585: ssize_t        recv(int, void *, size_t, int);
1.84      christos  586: ssize_t        recvfrom(int, void *__restrict, size_t, int,
1.70      perry     587:            struct sockaddr * __restrict, socklen_t * __restrict);
                    588: ssize_t        recvmsg(int, struct msghdr *, int);
                    589: ssize_t        send(int, const void *, size_t, int);
                    590: ssize_t        sendto(int, const void *,
                    591:            size_t, int, const struct sockaddr *, socklen_t);
                    592: ssize_t        sendmsg(int, const struct msghdr *, int);
                    593: int    setsockopt(int, int, int, const void *, socklen_t);
                    594: int    shutdown(int, int);
                    595: int    sockatmark(int);
1.81      mrg       596: int    socket(int, int, int)
1.82      mrg       597: #if !defined(__LIBC12_SOURCE__) && !defined(_STANDALONE)
1.81      mrg       598: __RENAME(__socket30)
                    599: #endif
                    600:                             ;
1.70      perry     601: int    socketpair(int, int, int, int *);
1.1       cgd       602: __END_DECLS
1.14      christos  603: #endif /* !_KERNEL */
1.1       cgd       604:
1.2       mycroft   605: #endif /* !_SYS_SOCKET_H_ */

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