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Annotation of XNU/bsd/netat/aurp_misc.c, 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) 1996 Apple Computer, Inc. 
        !            24:  *
        !            25:  *             Created April 8, 1996 by Tuyen Nguyen
        !            26:  *   Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
        !            27:  *
        !            28:  *     File: misc.c
        !            29:  */
        !            30: #include <sys/errno.h>
        !            31: #include <sys/types.h>
        !            32: #include <sys/param.h>
        !            33: #include <machine/spl.h>
        !            34: #include <sys/systm.h>
        !            35: #include <sys/kernel.h>
        !            36: #include <sys/proc.h>
        !            37: #include <sys/filedesc.h>
        !            38: #include <sys/fcntl.h>
        !            39: #include <sys/mbuf.h>
        !            40: #include <sys/socket.h>
        !            41: #include <sys/socketvar.h>
        !            42: #include <net/if.h>
        !            43: 
        !            44: #include <netat/sysglue.h>
        !            45: #include <netat/appletalk.h>
        !            46: #include <netat/at_var.h>
        !            47: #include <netat/rtmp.h>
        !            48: #include <netat/routing_tables.h>
        !            49: #include <netat/at_pcb.h>
        !            50: #include <netat/aurp.h>
        !            51: #include <netat/debug.h>
        !            52: 
        !            53: /* */
        !            54: void AURPiocack(gref, m)
        !            55:        gref_t *gref;
        !            56:        gbuf_t *m;
        !            57: {
        !            58:        /* send ok reply to ioctl command */
        !            59:        gbuf_set_type(m, MSG_IOCACK);
        !            60:        atalk_putnext(gref, m);
        !            61: }
        !            62: 
        !            63: void AURPiocnak(gref, m, error)
        !            64:        gref_t *gref;
        !            65:        gbuf_t *m;
        !            66:        int error;
        !            67: {
        !            68:        ioc_t *iocbp = (ioc_t *)gbuf_rptr(m);
        !            69: 
        !            70:        /* send error reply to ioctl command */
        !            71:        if (gbuf_cont(m)) {
        !            72:         gbuf_freem(gbuf_cont(m));
        !            73:         gbuf_cont(m) = 0;
        !            74:        }
        !            75:        iocbp->ioc_error = error;
        !            76:        iocbp->ioc_count = 0;
        !            77:        iocbp->ioc_rval = -1;
        !            78:        gbuf_set_type(m, MSG_IOCNAK);
        !            79:        atalk_putnext(gref, m);
        !            80: }
        !            81: 
        !            82: /* */
        !            83: void AURPupdate(arg)
        !            84:        void *arg;
        !            85: {
        !            86:        unsigned char node;
        !            87:        aurp_state_t *state = (aurp_state_t *)&aurp_state[1];
        !            88: 
        !            89:        if (aurp_gref == 0)
        !            90:                return;
        !            91: 
        !            92:        /*
        !            93:         * for every tunnel peer, do the following periodically:
        !            94:         * 1. send zone requests to determine zone names of networks
        !            95:         *    that still do not have asssociated zone names.
        !            96:         * 2. send any RI update that are pending
        !            97:         */
        !            98:        for (node=1; node <= dst_addr_cnt; node++, state++) {
        !            99:                AURPsndZReq(state);
        !           100:                AURPsndRIUpd(state);
        !           101:        }
        !           102: 
        !           103:        /* restart the periodic update timer */
        !           104:        timeout(AURPupdate, arg, AURP_UpdateRate*10*HZ);
        !           105:        update_tmo = 1;
        !           106: }
        !           107: 
        !           108: /* */
        !           109: void AURPfreemsg(m)
        !           110:        gbuf_t *m;
        !           111: {
        !           112:        gbuf_t *tmp_m;
        !           113: 
        !           114:        while ((tmp_m = m) != 0) {
        !           115:                m = gbuf_next(m);
        !           116:                gbuf_next(tmp_m) = 0;
        !           117:                gbuf_freem(tmp_m);
        !           118:        }
        !           119: }
        !           120: 
        !           121: /* */
        !           122: int AURPinit()
        !           123: {
        !           124:        unsigned char node;
        !           125:        aurp_state_t *state = (aurp_state_t *)&aurp_state[1];
        !           126:        short entry_num;
        !           127:        RT_entry *entry = (RT_entry *)RT_table;
        !           128: 
        !           129:        /* start the periodic update timer */
        !           130:        timeout(AURPupdate, 0, AURP_UpdateRate*10*HZ);
        !           131:        update_tmo = 1;
        !           132: 
        !           133:        /* initialize AURP flags for entries in the RT table */
        !           134:        for (entry_num=0; entry_num < RT_maxentry; entry_num++,entry++)
        !           135:                entry->AURPFlag = 0;
        !           136: 
        !           137:        /* initiate connections to peers */
        !           138:        for (node=1; node <= dst_addr_cnt; node++, state++) {
        !           139:                bzero((char *)state, sizeof(*state));
        !           140:                state->rem_node = node;
        !           141:                state->snd_state = AURPSTATE_Unconnected;
        !           142:                state->rcv_state = AURPSTATE_Unconnected;
        !           143:                dPrintf(D_M_AURP, D_L_STARTUP_INFO,
        !           144:                        ("AURPinit: sending OpenReq to node %u\n", node));
        !           145:                AURPsndOpenReq(state);
        !           146:        }
        !           147: 
        !           148:        return 0;
        !           149: }
        !           150: 
        !           151: /* */
        !           152: void AURPcleanup(state)
        !           153:        aurp_state_t *state;
        !           154: {
        !           155:        if (state->rsp_m) {
        !           156:                gbuf_freem(state->rsp_m);
        !           157:                state->rsp_m = 0;
        !           158:        }
        !           159: 
        !           160:        if (state->upd_m) {
        !           161:                gbuf_freem(state->upd_m);
        !           162:                state->upd_m = 0;
        !           163:        }
        !           164: }
        !           165: 
        !           166: /*
        !           167:  *
        !           168:  */
        !           169: void AURPshutdown()
        !           170: {
        !           171:        unsigned char node;
        !           172:        aurp_state_t *state = (aurp_state_t *)&aurp_state[1];
        !           173: 
        !           174:        /* cancel the periodic update timer */
        !           175:        untimeout(AURPupdate, 0);
        !           176:        update_tmo = 0;
        !           177: 
        !           178:        /* notify tunnel peers of router going-down */
        !           179:        for (node=1; node <= dst_addr_cnt; node++, state++) {
        !           180:                AURPcleanup(state);
        !           181:                AURPsndRDReq(state);
        !           182:        }
        !           183: 
        !           184:        /* bring down the router */ 
        !           185:        aurp_wakeup(NULL, (caddr_t) AE_SHUTDOWN, 0);
        !           186: }
        !           187: 
        !           188: void AURPaccess()
        !           189: {
        !           190:        unsigned char i;
        !           191:        short entry_num;
        !           192:        RT_entry *entry;
        !           193: 
        !           194:                entry = (RT_entry *)RT_table;
        !           195:                for (entry_num=0; entry_num < RT_maxentry; entry_num++,entry++)
        !           196:                        entry->AURPFlag = net_export ? AURP_NetHiden : 0;
        !           197: 
        !           198:        for (i=0; i < net_access_cnt; i++) {
        !           199:                /* export or hide networks as configured */
        !           200:                if ((entry = rt_blookup(net_access[i])) != 0)
        !           201:                        entry->AURPFlag = net_export ? 0 : AURP_NetHiden;
        !           202:        }
        !           203: }

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