bsd/netat/aurp_misc.c

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  *      Copyright (c) 1996 Apple Computer, Inc.
  32  *
  33  *              Created April 8, 1996 by Tuyen Nguyen
  34  *   Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
  35  *
  36  *      File: misc.c
  37  */
  38 #include <sys/errno.h>
  39 #include <sys/types.h>
  40 #include <sys/param.h>
  41 #include <machine/spl.h>
  42 #include <sys/systm.h>
  43 #include <sys/kernel.h>
  44 #include <sys/proc.h>
  45 #include <sys/filedesc.h>
  46 #include <sys/fcntl.h>
  47 #include <sys/mbuf.h>
  48 #include <sys/socket.h>
  49 #include <sys/socketvar.h>
  50 #include <net/if.h>
  51
  52 #include <netat/sysglue.h>
  53 #include <netat/appletalk.h>
  54 #include <netat/at_var.h>
  55 #include <netat/rtmp.h>
  56 #include <netat/routing_tables.h>
  57 #include <netat/at_pcb.h>
  58 #include <netat/aurp.h>
  59 #include <netat/debug.h>
  60
  61 /* */
  62 void AURPiocack(gref, m)
  63         gref_t *gref;
  64         gbuf_t *m;
  65 {
  66         /* send ok reply to ioctl command */
  67         gbuf_set_type(m, MSG_IOCACK);
  68         atalk_putnext(gref, m);
  69 }
  70
  71 void AURPiocnak(gref, m, error)
  72         gref_t *gref;
  73         gbuf_t *m;
  74         int error;
  75 {
  76         ioc_t *iocbp = (ioc_t *)gbuf_rptr(m);
  77
  78         /* send error reply to ioctl command */
  79         if (gbuf_cont(m)) {
  80         gbuf_freem(gbuf_cont(m));
  81         gbuf_cont(m) = 0;
  82         }
  83         iocbp->ioc_error = error;
  84         iocbp->ioc_count = 0;
  85         iocbp->ioc_rval = -1;
  86         gbuf_set_type(m, MSG_IOCNAK);
  87         atalk_putnext(gref, m);
  88 }
  89
  90 /* */
  91 void AURPupdate(arg)
  92         void *arg;
  93 {
  94         unsigned char node;
  95         aurp_state_t *state;
  96
  97         atalk_lock();
  98
  99         state = (aurp_state_t *)&aurp_state[1];
 100
 101         if (aurp_gref == 0) {
 102                 atalk_unlock();
 103                 return;
 104         }
 105         /*
 106          * for every tunnel peer, do the following periodically:
 107          * 1. send zone requests to determine zone names of networks
 108          *    that still do not have asssociated zone names.
 109          * 2. send any RI update that are pending
 110          */
 111         for (node=1; node <= dst_addr_cnt; node++, state++) {
 112                 AURPsndZReq(state);
 113                 AURPsndRIUpd(state);
 114         }
 115
 116         /* restart the periodic update timer */
 117         timeout(AURPupdate, arg, AURP_UpdateRate*10*HZ);
 118         update_tmo = 1;
 119
 120         atalk_unlock();
 121 }
 122
 123 /* */
 124 void AURPfreemsg(m)
 125         gbuf_t *m;
 126 {
 127         gbuf_t *tmp_m;
 128
 129         while ((tmp_m = m) != 0) {
 130                 m = gbuf_next(m);
 131                 gbuf_next(tmp_m) = 0;
 132                 gbuf_freem(tmp_m);
 133         }
 134 }
 135
 136 /* */
 137 int AURPinit()
 138 {
 139         unsigned char node;
 140         aurp_state_t *state = (aurp_state_t *)&aurp_state[1];
 141         short entry_num;
 142         RT_entry *entry = (RT_entry *)RT_table;
 143
 144         /* start the periodic update timer */
 145         timeout(AURPupdate, 0, AURP_UpdateRate*10*HZ);
 146         update_tmo = 1;
 147
 148         /* initialize AURP flags for entries in the RT table */
 149         for (entry_num=0; entry_num < RT_maxentry; entry_num++,entry++)
 150                 entry->AURPFlag = 0;
 151
 152         /* initiate connections to peers */
 153         for (node=1; node <= dst_addr_cnt; node++, state++) {
 154                 bzero((char *)state, sizeof(*state));
 155                 state->rem_node = node;
 156                 state->snd_state = AURPSTATE_Unconnected;
 157                 state->rcv_state = AURPSTATE_Unconnected;
 158                 dPrintf(D_M_AURP, D_L_STARTUP_INFO,
 159                         ("AURPinit: sending OpenReq to node %u\n", node));
 160                 AURPsndOpenReq(state);
 161         }
 162
 163         return 0;
 164 }
 165
 166 /* */
 167 void AURPcleanup(state)
 168         aurp_state_t *state;
 169 {
 170         if (state->rsp_m) {
 171                 gbuf_freem(state->rsp_m);
 172                 state->rsp_m = 0;
 173         }
 174
 175         if (state->upd_m) {
 176                 gbuf_freem(state->upd_m);
 177                 state->upd_m = 0;
 178         }
 179 }
 180
 181 /*
 182  *
 183  */
 184 void AURPshutdown()
 185 {
 186         unsigned char node;
 187         aurp_state_t *state = (aurp_state_t *)&aurp_state[1];
 188
 189         /* cancel the periodic update timer */
 190         untimeout(AURPupdate, 0);
 191         update_tmo = 0;
 192
 193         /* notify tunnel peers of router going-down */
 194         for (node=1; node <= dst_addr_cnt; node++, state++) {
 195                 AURPcleanup(state);
 196                 AURPsndRDReq(state);
 197         }
 198
 199         /* bring down the router */
 200         aurp_wakeup(NULL, (caddr_t) AE_SHUTDOWN, 0);
 201 }
 202
 203 void AURPaccess()
 204 {
 205         unsigned char i;
 206         short entry_num;
 207         RT_entry *entry;
 208
 209                 entry = (RT_entry *)RT_table;
 210                 for (entry_num=0; entry_num < RT_maxentry; entry_num++,entry++)
 211                         entry->AURPFlag = net_export ? AURP_NetHiden : 0;
 212
 213         for (i=0; i < net_access_cnt; i++) {
 214                 /* export or hide networks as configured */
 215                 if ((entry = rt_blookup(net_access[i])) != 0)
 216                         entry->AURPFlag = net_export ? 0 : AURP_NetHiden;
 217         }
 218 }