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Annotation of 43BSDTahoe/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.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  *
        !            17:  *     @(#)af.c        7.4 (Berkeley) 6/27/88
        !            18:  */
        !            19: 
        !            20: #include "param.h"
        !            21: #include "mbuf.h"
        !            22: #include "protosw.h"
        !            23: #include "socket.h"
        !            24: #include "socketvar.h"
        !            25: #include "af.h"
        !            26: 
        !            27: /*
        !            28:  * Address family support routines
        !            29:  */
        !            30: int    null_hash(), null_netmatch();
        !            31: #define        AFNULL \
        !            32:        { null_hash,    null_netmatch }
        !            33: 
        !            34: #ifdef INET
        !            35: extern int inet_hash(), inet_netmatch();
        !            36: #define        AFINET \
        !            37:        { inet_hash,    inet_netmatch }
        !            38: #else
        !            39: #define        AFINET  AFNULL
        !            40: #endif
        !            41: 
        !            42: #ifdef NS
        !            43: extern int ns_hash(), ns_netmatch();
        !            44: #define        AFNS \
        !            45:        { ns_hash,      ns_netmatch }
        !            46: #else
        !            47: #define        AFNS    AFNULL
        !            48: #endif
        !            49: 
        !            50: struct afswitch afswitch[AF_MAX] = {
        !            51:        AFNULL, AFNULL, AFINET, AFINET, AFNULL,
        !            52:        AFNULL, AFNS,   AFNULL, AFNULL, AFNULL,
        !            53:        AFNULL, AFNULL, AFNULL, AFNULL, AFNULL,
        !            54:        AFNULL, AFNULL,                                 /* through 16 */
        !            55: };
        !            56: 
        !            57: null_init()
        !            58: {
        !            59:        register struct afswitch *af;
        !            60: 
        !            61:        for (af = afswitch; af < &afswitch[AF_MAX]; af++)
        !            62:                if (af->af_hash == (int (*)())NULL) {
        !            63:                        af->af_hash = null_hash;
        !            64:                        af->af_netmatch = null_netmatch;
        !            65:                }
        !            66: }
        !            67: 
        !            68: /*ARGSUSED*/
        !            69: null_hash(addr, hp)
        !            70:        struct sockaddr *addr;
        !            71:        struct afhash *hp;
        !            72: {
        !            73: 
        !            74:        hp->afh_nethash = hp->afh_hosthash = 0;
        !            75: }
        !            76: 
        !            77: /*ARGSUSED*/
        !            78: null_netmatch(a1, a2)
        !            79:        struct sockaddr *a1, *a2;
        !            80: {
        !            81: 
        !            82:        return (0);
        !            83: }

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