bsd/netat/aurp_rx.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 for Kernel execution, May, 1996, Justin C. Walker
  35  *   Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
  36  *
  37  *      File: rx.c
  38  */
  39 #include <sys/errno.h>
  40 #include <sys/types.h>
  41 #include <sys/param.h>
  42 #include <machine/spl.h>
  43 #include <sys/systm.h>
  44 #include <sys/kernel.h>
  45 #include <sys/proc.h>
  46 #include <sys/filedesc.h>
  47 #include <sys/fcntl.h>
  48 #include <sys/mbuf.h>
  49 #include <sys/socket.h>
  50 #include <sys/socketvar.h>
  51 #include <net/if.h>
  52
  53 #include <netat/sysglue.h>
  54 #include <netat/appletalk.h>
  55 #include <netat/at_var.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  * Not using the stream queue for data; keep this around to handle
  63  *  requests from the user proc (mostly setup).
  64  */
  65 int
  66 aurp_wput(gref, m)
  67         gref_t *gref;
  68         gbuf_t *m;
  69 {
  70         register ioc_t *iocbp;
  71         register gbuf_t *mdata;
  72         register int temp, error;
  73
  74         switch (gbuf_type(m)) {
  75
  76         case MSG_IOCTL:
  77                 iocbp = (ioc_t *)gbuf_rptr(m);
  78                 switch (iocbp->ioc_cmd) {
  79                 case AUC_CFGTNL: /* set up a tunnel, init the AURP daemon */
  80                         mdata = gbuf_cont(m);
  81                         temp = (int)(*gbuf_rptr(mdata));
  82                         if (temp != dst_addr_cnt) {
  83                                 AURPiocnak(gref, m, ENOSPC);
  84                                 return 0;
  85                         }
  86                         if ((error = aurpd_start()) != 0) {
  87                                 AURPiocnak(gref, m, error);
  88                                 return 0;
  89                         }
  90                         if (AURPinit()) {
  91                                 AURPiocnak(gref, m, ENOMEM);
  92                                 return 0;
  93                         }
  94                         ddp_AURPfuncx(AURPCODE_AURPPROTO, 0, 0);
  95                         AURPaccess();
  96                         break;
  97
  98                 case AUC_SHTDOWN: /* shutdown AURP operation */
  99                         AURPshutdown();
 100                         break;
 101
 102                 case AUC_EXPNET: /* configure networks to be exported */
 103                 case AUC_HIDENET: /* configure networks to be hiden */
 104                         mdata = gbuf_cont(m);
 105                         net_access_cnt = (gbuf_len(mdata))/sizeof(short);
 106                         if ((net_access_cnt==0) || (net_access_cnt>AURP_MaxNetAccess)) {
 107                                 AURPiocnak(gref, m, EINVAL);
 108                                 return 0;
 109                         }
 110                         bcopy(gbuf_rptr(mdata), net_access,
 111                               gbuf_len(mdata));
 112                         if (iocbp->ioc_cmd == AUC_EXPNET)
 113                                 net_export = 1;
 114                         break;
 115
 116                 case AUC_UDPPORT:
 117                         mdata = gbuf_cont(m);
 118                         aurp_global.udp_port = *(char *)gbuf_rptr(mdata);
 119                         break;
 120
 121                 case AUC_NETLIST:
 122                         mdata = gbuf_cont(m);
 123                         /*
 124                          * Compute # addrs, Save for later check
 125                          * We cheat with a shift.
 126                          */
 127                         dst_addr_cnt = ((gbuf_len(mdata)) >> 2)-1;
 128                         bcopy(gbuf_rptr(mdata), &aurp_global.dst_addr,
 129                               gbuf_len(mdata));
 130                         aurp_global.src_addr = aurp_global.dst_addr[0];
 131                         aurp_global.dst_addr[0] = 0;
 132                         break;
 133
 134                 default:
 135                         AURPiocnak(gref, m, EINVAL);
 136                         return 0;
 137                 }
 138                 AURPiocack(gref, m);
 139                 break;
 140
 141         default:
 142                 dPrintf(D_M_AURP, D_L_WARNING,
 143                         ("aurp_wput: bad msg type=%d\n", gbuf_type(m)));
 144                 gbuf_freem(m);
 145                 break;
 146         }
 147
 148         return 0;
 149 }
 150
 151 /*
 152  * Insert an appletalk packet into the appletalk stack.
 153  * If it's an AURP data packet, just send it up; if it's AURP protocol,
 154  *  switch out here.
 155  */
 156
 157 int
 158 at_insert(m, type, node)
 159         register gbuf_t *m;
 160         register unsigned int type, node;
 161 {
 162         register aurp_hdr_t *hdrp;
 163         register aurp_state_t *state;
 164
 165         if (type == AUD_Atalk)
 166                 /* non-AURP proto packet */
 167                 ddp_AURPfuncx(AURPCODE_DATAPKT, m, node);
 168         else
 169         {       /* AURP proto packet */
 170                 state = (aurp_state_t *)&aurp_state[node];
 171                 state->tickle_retry = 0;
 172                 hdrp = (aurp_hdr_t *)gbuf_rptr(m);
 173
 174                 switch (hdrp->command_code) {
 175                 case AURPCMD_RIUpd:
 176                         AURPrcvRIUpd(state, m); break;
 177
 178                 case AURPCMD_RIReq:
 179                         AURPrcvRIReq(state, m); break;
 180
 181                 case AURPCMD_RIRsp:
 182                         AURPrcvRIRsp(state, m); break;
 183
 184                 case AURPCMD_RIAck:
 185                         AURPrcvRIAck(state, m); break;
 186
 187                 case AURPCMD_ZReq:
 188                         AURPrcvZReq(state, m); break;
 189
 190                 case AURPCMD_ZRsp:
 191                         AURPrcvZRsp(state, m); break;
 192
 193                 case AURPCMD_OpenReq:
 194                         AURPrcvOpenReq(state, m); break;
 195
 196                 case AURPCMD_OpenRsp:
 197                         AURPrcvOpenRsp(state, m); break;
 198
 199                 case AURPCMD_Tickle:
 200                         AURPrcvTickle(state, m); break;
 201
 202                 case AURPCMD_TickleAck:
 203                         AURPrcvTickleAck(state, m); break;
 204
 205                 case AURPCMD_RDReq:
 206                         AURPrcvRDReq(state, m); break;
 207
 208                 default:
 209                         dPrintf(D_M_AURP, D_L_WARNING,
 210                                 ("at_insert: bad proto cmd=%d\n",
 211                                 hdrp->command_code));
 212                         gbuf_freem(m);
 213                 }
 214         }
 215
 216         return 0;
 217 }