bsd/netat/aurp_rx.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  *      Copyright (c) 1996 Apple Computer, Inc.
  25  *
  26  *              Created April 8, 1996 by Tuyen Nguyen
  27  *              Modified for Kernel execution, May, 1996, Justin C. Walker
  28  *   Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
  29  *
  30  *      File: rx.c
  31  */
  32 #include <sys/errno.h>
  33 #include <sys/types.h>
  34 #include <sys/param.h>
  35 #include <machine/spl.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/proc.h>
  39 #include <sys/filedesc.h>
  40 #include <sys/fcntl.h>
  41 #include <sys/mbuf.h>
  42 #include <sys/socket.h>
  43 #include <sys/socketvar.h>
  44 #include <net/if.h>
  45
  46 #include <netat/sysglue.h>
  47 #include <netat/appletalk.h>
  48 #include <netat/at_var.h>
  49 #include <netat/routing_tables.h>
  50 #include <netat/at_pcb.h>
  51 #include <netat/aurp.h>
  52 #include <netat/debug.h>
  53
  54 /*
  55  * Not using the stream queue for data; keep this around to handle
  56  *  requests from the user proc (mostly setup).
  57  */
  58 int
  59 aurp_wput(gref, m)
  60         gref_t *gref;
  61         gbuf_t *m;
  62 {
  63         register ioc_t *iocbp;
  64         register gbuf_t *mdata;
  65         register int temp, error;
  66
  67         switch (gbuf_type(m)) {
  68
  69         case MSG_IOCTL:
  70                 iocbp = (ioc_t *)gbuf_rptr(m);
  71                 switch (iocbp->ioc_cmd) {
  72                 case AUC_CFGTNL: /* set up a tunnel, init the AURP daemon */
  73                         mdata = gbuf_cont(m);
  74                         temp = (int)(*gbuf_rptr(mdata));
  75                         if (temp != dst_addr_cnt) {
  76                                 AURPiocnak(gref, m, ENOSPC);
  77                                 return 0;
  78                         }
  79                         if ((error = aurpd_start()) != 0) {
  80                                 AURPiocnak(gref, m, error);
  81                                 return 0;
  82                         }
  83                         if (AURPinit()) {
  84                                 AURPiocnak(gref, m, ENOMEM);
  85                                 return 0;
  86                         }
  87                         ddp_AURPfuncx(AURPCODE_AURPPROTO, 0, 0);
  88                         AURPaccess();
  89                         break;
  90
  91                 case AUC_SHTDOWN: /* shutdown AURP operation */
  92                         AURPshutdown();
  93                         break;
  94
  95                 case AUC_EXPNET: /* configure networks to be exported */
  96                 case AUC_HIDENET: /* configure networks to be hiden */
  97                         mdata = gbuf_cont(m);
  98                         net_access_cnt = (gbuf_len(mdata))/sizeof(short);
  99                         if ((net_access_cnt==0) || (net_access_cnt>AURP_MaxNetAccess)) {
 100                                 AURPiocnak(gref, m, EINVAL);
 101                                 return 0;
 102                         }
 103                         bcopy(gbuf_rptr(mdata), net_access,
 104                               gbuf_len(mdata));
 105                         if (iocbp->ioc_cmd == AUC_EXPNET)
 106                                 net_export = 1;
 107                         break;
 108
 109                 case AUC_UDPPORT:
 110                         mdata = gbuf_cont(m);
 111                         aurp_global.udp_port = *(char *)gbuf_rptr(mdata);
 112                         break;
 113
 114                 case AUC_NETLIST:
 115                         mdata = gbuf_cont(m);
 116                         /*
 117                          * Compute # addrs, Save for later check
 118                          * We cheat with a shift.
 119                          */
 120                         dst_addr_cnt = ((gbuf_len(mdata)) >> 2)-1;
 121                         bcopy(gbuf_rptr(mdata), &aurp_global.dst_addr,
 122                               gbuf_len(mdata));
 123                         aurp_global.src_addr = aurp_global.dst_addr[0];
 124                         aurp_global.dst_addr[0] = 0;
 125                         break;
 126
 127                 default:
 128                         AURPiocnak(gref, m, EINVAL);
 129                         return 0;
 130                 }
 131                 AURPiocack(gref, m);
 132                 break;
 133
 134         default:
 135                 dPrintf(D_M_AURP, D_L_WARNING,
 136                         ("aurp_wput: bad msg type=%d\n", gbuf_type(m)));
 137                 gbuf_freem(m);
 138                 break;
 139         }
 140
 141         return 0;
 142 }
 143
 144 /*
 145  * Insert an appletalk packet into the appletalk stack.
 146  * If it's an AURP data packet, just send it up; if it's AURP protocol,
 147  *  switch out here.
 148  */
 149
 150 int
 151 at_insert(m, type, node)
 152         register gbuf_t *m;
 153         register unsigned int type, node;
 154 {
 155         register aurp_hdr_t *hdrp;
 156         register aurp_state_t *state;
 157
 158         if (type == AUD_Atalk)
 159                 /* non-AURP proto packet */
 160                 ddp_AURPfuncx(AURPCODE_DATAPKT, m, node);
 161         else
 162         {       /* AURP proto packet */
 163                 state = (aurp_state_t *)&aurp_state[node];
 164                 state->tickle_retry = 0;
 165                 hdrp = (aurp_hdr_t *)gbuf_rptr(m);
 166
 167                 switch (hdrp->command_code) {
 168                 case AURPCMD_RIUpd:
 169                         AURPrcvRIUpd(state, m); break;
 170
 171                 case AURPCMD_RIReq:
 172                         AURPrcvRIReq(state, m); break;
 173
 174                 case AURPCMD_RIRsp:
 175                         AURPrcvRIRsp(state, m); break;
 176
 177                 case AURPCMD_RIAck:
 178                         AURPrcvRIAck(state, m); break;
 179
 180                 case AURPCMD_ZReq:
 181                         AURPrcvZReq(state, m); break;
 182
 183                 case AURPCMD_ZRsp:
 184                         AURPrcvZRsp(state, m); break;
 185
 186                 case AURPCMD_OpenReq:
 187                         AURPrcvOpenReq(state, m); break;
 188
 189                 case AURPCMD_OpenRsp:
 190                         AURPrcvOpenRsp(state, m); break;
 191
 192                 case AURPCMD_Tickle:
 193                         AURPrcvTickle(state, m); break;
 194
 195                 case AURPCMD_TickleAck:
 196                         AURPrcvTickleAck(state, m); break;
 197
 198                 case AURPCMD_RDReq:
 199                         AURPrcvRDReq(state, m); break;
 200
 201                 default:
 202                         dPrintf(D_M_AURP, D_L_WARNING,
 203                                 ("at_insert: bad proto cmd=%d\n",
 204                                 hdrp->command_code));
 205                         gbuf_freem(m);
 206                 }
 207         }
 208
 209         return 0;
 210 }