bsd/netat/aurp_rx.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  *      Copyright (c) 1996 Apple Computer, Inc.
  27  *
  28  *              Created April 8, 1996 by Tuyen Nguyen
  29  *              Modified for Kernel execution, May, 1996, Justin C. Walker
  30  *   Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
  31  *
  32  *      File: rx.c
  33  */
  34 #include <sys/errno.h>
  35 #include <sys/types.h>
  36 #include <sys/param.h>
  37 #include <machine/spl.h>
  38 #include <sys/systm.h>
  39 #include <sys/kernel.h>
  40 #include <sys/proc.h>
  41 #include <sys/filedesc.h>
  42 #include <sys/fcntl.h>
  43 #include <sys/mbuf.h>
  44 #include <sys/socket.h>
  45 #include <sys/socketvar.h>
  46 #include <net/if.h>
  47
  48 #include <netat/sysglue.h>
  49 #include <netat/appletalk.h>
  50 #include <netat/at_var.h>
  51 #include <netat/routing_tables.h>
  52 #include <netat/at_pcb.h>
  53 #include <netat/aurp.h>
  54 #include <netat/debug.h>
  55
  56 /*
  57  * Not using the stream queue for data; keep this around to handle
  58  *  requests from the user proc (mostly setup).
  59  */
  60 int
  61 aurp_wput(gref, m)
  62         gref_t *gref;
  63         gbuf_t *m;
  64 {
  65         register ioc_t *iocbp;
  66         register gbuf_t *mdata;
  67         register int temp, error;
  68
  69         switch (gbuf_type(m)) {
  70
  71         case MSG_IOCTL:
  72                 iocbp = (ioc_t *)gbuf_rptr(m);
  73                 switch (iocbp->ioc_cmd) {
  74                 case AUC_CFGTNL: /* set up a tunnel, init the AURP daemon */
  75                         mdata = gbuf_cont(m);
  76                         temp = (int)(*gbuf_rptr(mdata));
  77                         if (temp != dst_addr_cnt) {
  78                                 AURPiocnak(gref, m, ENOSPC);
  79                                 return 0;
  80                         }
  81                         if ((error = aurpd_start()) != 0) {
  82                                 AURPiocnak(gref, m, error);
  83                                 return 0;
  84                         }
  85                         if (AURPinit()) {
  86                                 AURPiocnak(gref, m, ENOMEM);
  87                                 return 0;
  88                         }
  89                         ddp_AURPfuncx(AURPCODE_AURPPROTO, 0, 0);
  90                         AURPaccess();
  91                         break;
  92
  93                 case AUC_SHTDOWN: /* shutdown AURP operation */
  94                         AURPshutdown();
  95                         break;
  96
  97                 case AUC_EXPNET: /* configure networks to be exported */
  98                 case AUC_HIDENET: /* configure networks to be hiden */
  99                         mdata = gbuf_cont(m);
 100                         net_access_cnt = (gbuf_len(mdata))/sizeof(short);
 101                         if ((net_access_cnt==0) || (net_access_cnt>AURP_MaxNetAccess)) {
 102                                 AURPiocnak(gref, m, EINVAL);
 103                                 return 0;
 104                         }
 105                         bcopy(gbuf_rptr(mdata), net_access,
 106                               gbuf_len(mdata));
 107                         if (iocbp->ioc_cmd == AUC_EXPNET)
 108                                 net_export = 1;
 109                         break;
 110
 111                 case AUC_UDPPORT:
 112                         aurp_global.udp_port = *(char *)gbuf_rptr(mdata);
 113                         break;
 114
 115                 case AUC_NETLIST:
 116                         mdata = gbuf_cont(m);
 117                         /*
 118                          * Compute # addrs, Save for later check
 119                          * We cheat with a shift.
 120                          */
 121                         dst_addr_cnt = ((gbuf_len(mdata)) >> 2)-1;
 122                         bcopy(gbuf_rptr(mdata), &aurp_global.dst_addr,
 123                               gbuf_len(mdata));
 124                         aurp_global.src_addr = aurp_global.dst_addr[0];
 125                         aurp_global.dst_addr[0] = 0;
 126                         break;
 127
 128                 default:
 129                         AURPiocnak(gref, m, EINVAL);
 130                         return 0;
 131                 }
 132                 AURPiocack(gref, m);
 133                 break;
 134
 135         default:
 136                 dPrintf(D_M_AURP, D_L_WARNING,
 137                         ("aurp_wput: bad msg type=%d\n", gbuf_type(m)));
 138                 gbuf_freem(m);
 139                 break;
 140         }
 141
 142         return 0;
 143 }
 144
 145 /*
 146  * Insert an appletalk packet into the appletalk stack.
 147  * If it's an AURP data packet, just send it up; if it's AURP protocol,
 148  *  switch out here.
 149  */
 150
 151 int
 152 at_insert(m, type, node)
 153         register gbuf_t *m;
 154         register unsigned int type, node;
 155 {
 156         register aurp_hdr_t *hdrp;
 157         register aurp_state_t *state;
 158
 159         if (type == AUD_Atalk)
 160                 /* non-AURP proto packet */
 161                 ddp_AURPfuncx(AURPCODE_DATAPKT, m, node);
 162         else
 163         {       /* AURP proto packet */
 164                 state = (aurp_state_t *)&aurp_state[node];
 165                 state->tickle_retry = 0;
 166                 hdrp = (aurp_hdr_t *)gbuf_rptr(m);
 167
 168                 switch (hdrp->command_code) {
 169                 case AURPCMD_RIUpd:
 170                         AURPrcvRIUpd(state, m); break;
 171
 172                 case AURPCMD_RIReq:
 173                         AURPrcvRIReq(state, m); break;
 174
 175                 case AURPCMD_RIRsp:
 176                         AURPrcvRIRsp(state, m); break;
 177
 178                 case AURPCMD_RIAck:
 179                         AURPrcvRIAck(state, m); break;
 180
 181                 case AURPCMD_ZReq:
 182                         AURPrcvZReq(state, m); break;
 183
 184                 case AURPCMD_ZRsp:
 185                         AURPrcvZRsp(state, m); break;
 186
 187                 case AURPCMD_OpenReq:
 188                         AURPrcvOpenReq(state, m); break;
 189
 190                 case AURPCMD_OpenRsp:
 191                         AURPrcvOpenRsp(state, m); break;
 192
 193                 case AURPCMD_Tickle:
 194                         AURPrcvTickle(state, m); break;
 195
 196                 case AURPCMD_TickleAck:
 197                         AURPrcvTickleAck(state, m); break;
 198
 199                 case AURPCMD_RDReq:
 200                         AURPrcvRDReq(state, m); break;
 201
 202                 default:
 203                         dPrintf(D_M_AURP, D_L_WARNING,
 204                                 ("at_insert: bad proto cmd=%d\n",
 205                                 hdrp->command_code));
 206                         gbuf_freem(m);
 207                 }
 208         }
 209
 210         return 0;
 211 }