Annotation of kernel/bsd/netat/aurp_misc.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  *     Copyright (c) 1996 Apple Computer, Inc. 
        !            27:  *
        !            28:  *     The information contained herein is subject to change without
        !            29:  *     notice and  should not be  construed as a commitment by Apple
        !            30:  *     Computer, Inc. Apple Computer, Inc. assumes no responsibility
        !            31:  *     for any errors that may appear.
        !            32:  *
        !            33:  *     Confidential and Proprietary to Apple Computer, Inc.
        !            34:  *
        !            35:  *     File: misc.c
        !            36:  */
        !            37: #include <sys/socketvar.h>
        !            38: #include <sysglue.h>
        !            39: #include <at/appletalk.h>
        !            40: #include <lap.h>
        !            41: #include <rtmp.h>
        !            42: #include <routing_tables.h>
        !            43: #include <at/aurp.h>
        !            44: #define _AURP
        !            45: #define _KERNSYS
        !            46: #include <at_aurp.h>
        !            47: 
        !            48: /* */
        !            49: void AURPiocack(gref, m)
        !            50:        gref_t *gref;
        !            51:        gbuf_t *m;
        !            52: {
        !            53:        /* send ok reply to ioctl command */
        !            54:        gbuf_set_type(m, MSG_IOCACK);
        !            55:        atalk_putnext(gref, m);
        !            56: }
        !            57: 
        !            58: void AURPiocnak(gref, m, error)
        !            59:        gref_t *gref;
        !            60:        gbuf_t *m;
        !            61:        int error;
        !            62: {
        !            63:        ioc_t *iocbp = (ioc_t *)gbuf_rptr(m);
        !            64: 
        !            65:        /* send error reply to ioctl command */
        !            66:        if (gbuf_cont(m)) {
        !            67:         gbuf_freem(gbuf_cont(m));
        !            68:         gbuf_cont(m) = 0;
        !            69:        }
        !            70:        iocbp->ioc_error = error;
        !            71:        iocbp->ioc_count = 0;
        !            72:        iocbp->ioc_rval = -1;
        !            73:        gbuf_set_type(m, MSG_IOCNAK);
        !            74:        atalk_putnext(gref, m);
        !            75: }
        !            76: 
        !            77: /* */
        !            78: void AURPupdate(arg)
        !            79:        void *arg;
        !            80: {
        !            81:        unsigned char node;
        !            82:        aurp_state_t *state = (aurp_state_t *)&aurp_state[1];
        !            83: 
        !            84:        if (aurp_gref == 0)
        !            85:                return;
        !            86: 
        !            87:        /*
        !            88:         * for every tunnel peer, do the following periodically:
        !            89:         * 1. send zone requests to determine zone names of networks
        !            90:         *    that still do not have asssociated zone names.
        !            91:         * 2. send any RI update that are pending
        !            92:         */
        !            93:        for (node=1; node <= dst_addr_cnt; node++, state++) {
        !            94:                AURPsndZReq(state);
        !            95:                AURPsndRIUpd(state);
        !            96:        }
        !            97: 
        !            98:        /* restart the periodic update timer */
        !            99:        update_tmo = (void *)atalk_timeout(AURPupdate, arg, AURP_UpdateRate*10*HZ);
        !           100: }
        !           101: 
        !           102: /* */
        !           103: void AURPfreemsg(m)
        !           104:        gbuf_t *m;
        !           105: {
        !           106:        gbuf_t *tmp_m;
        !           107: 
        !           108:        while ((tmp_m = m) != 0) {
        !           109:                m = gbuf_next(m);
        !           110:                gbuf_next(tmp_m) = 0;
        !           111:                gbuf_freem(tmp_m);
        !           112:        }
        !           113: }
        !           114: 
        !           115: /* */
        !           116: int AURPinit()
        !           117: {
        !           118:        unsigned char node;
        !           119:        aurp_state_t *state = (aurp_state_t *)&aurp_state[1];
        !           120:        short entry_num;
        !           121:        RT_entry *entry = (RT_entry *)RT_table;
        !           122: 
        !           123:        /* start the periodic update timer */
        !           124:        update_tmo = (void *)atalk_timeout(AURPupdate, 0, AURP_UpdateRate*10*HZ);
        !           125: 
        !           126:        /* initialize AURP flags for entries in the RT table */
        !           127:        for (entry_num=0; entry_num < RT_maxentry; entry_num++,entry++)
        !           128:                entry->AURPFlag = 0;
        !           129: 
        !           130:        /* initiate connections to peers */
        !           131:        for (node=1; node <= dst_addr_cnt; node++, state++) {
        !           132:                bzero((char *)state, sizeof(*state));
        !           133:                state->rem_node = node;
        !           134:                state->snd_state = AURPSTATE_Unconnected;
        !           135:                state->rcv_state = AURPSTATE_Unconnected;
        !           136:                AURPsndOpenReq(state);
        !           137:        }
        !           138: 
        !           139:        return 0;
        !           140: }
        !           141: 
        !           142: /* */
        !           143: void AURPcleanup(state)
        !           144:        aurp_state_t *state;
        !           145: {
        !           146:        if (state->rsp_m) {
        !           147:                gbuf_freem(state->rsp_m);
        !           148:                state->rsp_m = 0;
        !           149:        }
        !           150: 
        !           151:        if (state->upd_m) {
        !           152:                gbuf_freem(state->upd_m);
        !           153:                state->upd_m = 0;
        !           154:        }
        !           155: }
        !           156: 
        !           157: /*
        !           158:  *
        !           159:  */
        !           160: void AURPshutdown()
        !           161: {
        !           162:        unsigned char node;
        !           163:        aurp_state_t *state = (aurp_state_t *)&aurp_state[1];
        !           164: 
        !           165:        /* cancel the periodic update timer */
        !           166:        atalk_untimeout(AURPupdate, 0, update_tmo);
        !           167:        update_tmo = 0;
        !           168: 
        !           169:        /* notify tunnel peers of router going-down */
        !           170:        for (node=1; node <= dst_addr_cnt; node++, state++) {
        !           171:                AURPcleanup(state);
        !           172:                AURPsndRDReq(state);
        !           173:        }
        !           174: 
        !           175:        /* bring down the router */ 
        !           176:        aurp_wakeup(AE_SHUTDOWN, 0);
        !           177: }
        !           178: 
        !           179: void AURPaccess()
        !           180: {
        !           181:        unsigned char i;
        !           182:        short entry_num;
        !           183:        RT_entry *entry;
        !           184: 
        !           185:                entry = (RT_entry *)RT_table;
        !           186:                for (entry_num=0; entry_num < RT_maxentry; entry_num++,entry++)
        !           187:                        entry->AURPFlag = net_export ? AURP_NetHiden : 0;
        !           188: 
        !           189:        for (i=0; i < net_access_cnt; i++) {
        !           190:                /* export or hide networks as configured */
        !           191:                if ((entry = RT_lookup(net_access[i])) != 0)
        !           192:                        entry->AURPFlag = net_export ? 0 : AURP_NetHiden;
        !           193:        }
        !           194: }

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