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Annotation of 43BSD/sys/net/af.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)af.c        7.1 (Berkeley) 6/4/86
        !             7:  */
        !             8: 
        !             9: #include "param.h"
        !            10: #include "mbuf.h"
        !            11: #include "protosw.h"
        !            12: #include "socket.h"
        !            13: #include "socketvar.h"
        !            14: #include "af.h"
        !            15: 
        !            16: /*
        !            17:  * Address family support routines
        !            18:  */
        !            19: int    null_hash(), null_netmatch();
        !            20: #define        AFNULL \
        !            21:        { null_hash,    null_netmatch }
        !            22: 
        !            23: #ifdef INET
        !            24: extern int inet_hash(), inet_netmatch();
        !            25: #define        AFINET \
        !            26:        { inet_hash,    inet_netmatch }
        !            27: #else
        !            28: #define        AFINET  AFNULL
        !            29: #endif
        !            30: 
        !            31: #ifdef NS
        !            32: extern int ns_hash(), ns_netmatch();
        !            33: #define        AFNS \
        !            34:        { ns_hash,      ns_netmatch }
        !            35: #else
        !            36: #define        AFNS    AFNULL
        !            37: #endif
        !            38: 
        !            39: struct afswitch afswitch[AF_MAX] = {
        !            40:        AFNULL, AFNULL, AFINET, AFINET, AFNULL,
        !            41:        AFNULL, AFNS,   AFNULL, AFNULL, AFNULL,
        !            42:        AFNULL, AFNULL, AFNULL, AFNULL, AFNULL,
        !            43:        AFNULL, AFNULL,                                 /* through 16 */
        !            44: };
        !            45: 
        !            46: null_init()
        !            47: {
        !            48:        register struct afswitch *af;
        !            49: 
        !            50:        for (af = afswitch; af < &afswitch[AF_MAX]; af++)
        !            51:                if (af->af_hash == (int (*)())NULL) {
        !            52:                        af->af_hash = null_hash;
        !            53:                        af->af_hash = null_hash;
        !            54:                }
        !            55: }
        !            56: 
        !            57: /*ARGSUSED*/
        !            58: null_hash(addr, hp)
        !            59:        struct sockaddr *addr;
        !            60:        struct afhash *hp;
        !            61: {
        !            62: 
        !            63:        hp->afh_nethash = hp->afh_hosthash = 0;
        !            64: }
        !            65: 
        !            66: /*ARGSUSED*/
        !            67: null_netmatch(a1, a2)
        !            68:        struct sockaddr *a1, *a2;
        !            69: {
        !            70: 
        !            71:        return (0);
        !            72: }

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