bsd/netat/aurp_rx.c

   1 /*
   2  * Copyright (c) 2000 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 #ifdef AURP_SUPPORT
  40
  41 #include <sys/errno.h>
  42 #include <sys/types.h>
  43 #include <sys/param.h>
  44 #include <machine/spl.h>
  45 #include <sys/systm.h>
  46 #include <sys/kernel.h>
  47 #include <sys/proc.h>
  48 #include <sys/filedesc.h>
  49 #include <sys/fcntl.h>
  50 #include <sys/mbuf.h>
  51 #include <sys/socket.h>
  52 #include <sys/socketvar.h>
  53 #include <net/if.h>
  54
  55 #include <netat/sysglue.h>
  56 #include <netat/appletalk.h>
  57 #include <netat/at_var.h>
  58 #include <netat/routing_tables.h>
  59 #include <netat/at_pcb.h>
  60 #include <netat/aurp.h>
  61 #include <netat/debug.h>
  62
  63 /*
  64  * Not using the stream queue for data; keep this around to handle
  65  *  requests from the user proc (mostly setup).
  66  */
  67 int
  68 aurp_wput(gref, m)
  69         gref_t *gref;
  70         gbuf_t *m;
  71 {
  72         register ioc_t *iocbp;
  73         register gbuf_t *mdata;
  74         register int temp, error;
  75
  76         switch (gbuf_type(m)) {
  77
  78         case MSG_IOCTL:
  79                 iocbp = (ioc_t *)gbuf_rptr(m);
  80                 switch (iocbp->ioc_cmd) {
  81                 case AUC_CFGTNL: /* set up a tunnel, init the AURP daemon */
  82                         mdata = gbuf_cont(m);
  83                         temp = (int)(*gbuf_rptr(mdata));
  84                         if (temp != dst_addr_cnt) {
  85                                 AURPiocnak(gref, m, ENOSPC);
  86                                 return 0;
  87                         }
  88                         if ((error = aurpd_start()) != 0) {
  89                                 AURPiocnak(gref, m, error);
  90                                 return 0;
  91                         }
  92                         if (AURPinit()) {
  93                                 AURPiocnak(gref, m, ENOMEM);
  94                                 return 0;
  95                         }
  96                         ddp_AURPfuncx(AURPCODE_AURPPROTO, 0, 0);
  97                         AURPaccess();
  98                         break;
  99
 100                 case AUC_SHTDOWN: /* shutdown AURP operation */
 101                         AURPshutdown();
 102                         break;
 103
 104                 case AUC_EXPNET: /* configure networks to be exported */
 105                 case AUC_HIDENET: /* configure networks to be hiden */
 106                         mdata = gbuf_cont(m);
 107                         net_access_cnt = (gbuf_len(mdata))/sizeof(short);
 108                         if ((net_access_cnt==0) || (net_access_cnt>AURP_MaxNetAccess)) {
 109                                 AURPiocnak(gref, m, EINVAL);
 110                                 return 0;
 111                         }
 112                         bcopy(gbuf_rptr(mdata), net_access,
 113                               gbuf_len(mdata));
 114                         if (iocbp->ioc_cmd == AUC_EXPNET)
 115                                 net_export = 1;
 116                         break;
 117
 118                 case AUC_UDPPORT:
 119                         mdata = gbuf_cont(m);
 120                         aurp_global.udp_port = *(char *)gbuf_rptr(mdata);
 121                         break;
 122
 123                 case AUC_NETLIST:
 124                         mdata = gbuf_cont(m);
 125                         /*
 126                          * Compute # addrs, Save for later check
 127                          * We cheat with a shift.
 128                          */
 129                         dst_addr_cnt = ((gbuf_len(mdata)) >> 2)-1;
 130                         bcopy(gbuf_rptr(mdata), &aurp_global.dst_addr,
 131                               gbuf_len(mdata));
 132                         aurp_global.src_addr = aurp_global.dst_addr[0];
 133                         aurp_global.dst_addr[0] = 0;
 134                         break;
 135
 136                 default:
 137                         AURPiocnak(gref, m, EINVAL);
 138                         return 0;
 139                 }
 140                 AURPiocack(gref, m);
 141                 break;
 142
 143         default:
 144                 dPrintf(D_M_AURP, D_L_WARNING,
 145                         ("aurp_wput: bad msg type=%d\n", gbuf_type(m)));
 146                 gbuf_freem(m);
 147                 break;
 148         }
 149
 150         return 0;
 151 }
 152
 153 /*
 154  * Insert an appletalk packet into the appletalk stack.
 155  * If it's an AURP data packet, just send it up; if it's AURP protocol,
 156  *  switch out here.
 157  */
 158
 159 int
 160 at_insert(m, type, node)
 161         register gbuf_t *m;
 162         register unsigned int type, node;
 163 {
 164         register aurp_hdr_t *hdrp;
 165         register aurp_state_t *state;
 166
 167         if (type == AUD_Atalk)
 168                 /* non-AURP proto packet */
 169                 ddp_AURPfuncx(AURPCODE_DATAPKT, m, node);
 170         else
 171         {       /* AURP proto packet */
 172                 state = (aurp_state_t *)&aurp_state[node];
 173                 state->tickle_retry = 0;
 174                 hdrp = (aurp_hdr_t *)gbuf_rptr(m);
 175
 176                 switch (hdrp->command_code) {
 177                 case AURPCMD_RIUpd:
 178                         AURPrcvRIUpd(state, m); break;
 179
 180                 case AURPCMD_RIReq:
 181                         AURPrcvRIReq(state, m); break;
 182
 183                 case AURPCMD_RIRsp:
 184                         AURPrcvRIRsp(state, m); break;
 185
 186                 case AURPCMD_RIAck:
 187                         AURPrcvRIAck(state, m); break;
 188
 189                 case AURPCMD_ZReq:
 190                         AURPrcvZReq(state, m); break;
 191
 192                 case AURPCMD_ZRsp:
 193                         AURPrcvZRsp(state, m); break;
 194
 195                 case AURPCMD_OpenReq:
 196                         AURPrcvOpenReq(state, m); break;
 197
 198                 case AURPCMD_OpenRsp:
 199                         AURPrcvOpenRsp(state, m); break;
 200
 201                 case AURPCMD_Tickle:
 202                         AURPrcvTickle(state, m); break;
 203
 204                 case AURPCMD_TickleAck:
 205                         AURPrcvTickleAck(state, m); break;
 206
 207                 case AURPCMD_RDReq:
 208                         AURPrcvRDReq(state, m); break;
 209
 210                 default:
 211                         dPrintf(D_M_AURP, D_L_WARNING,
 212                                 ("at_insert: bad proto cmd=%d\n",
 213                                 hdrp->command_code));
 214                         gbuf_freem(m);
 215                 }
 216         }
 217
 218         return 0;
 219 }
 220
 221 #endif  /* AURP_SUPPORT */