bsd/netat/aurp_rx.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_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. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  *      Copyright (c) 1996 Apple Computer, Inc.
  30  *
  31  *              Created April 8, 1996 by Tuyen Nguyen
  32  *              Modified for Kernel execution, May, 1996, Justin C. Walker
  33  *   Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
  34  *
  35  *      File: rx.c
  36  */
  37 #include <sys/errno.h>
  38 #include <sys/types.h>
  39 #include <sys/param.h>
  40 #include <machine/spl.h>
  41 #include <sys/systm.h>
  42 #include <sys/kernel.h>
  43 #include <sys/proc.h>
  44 #include <sys/filedesc.h>
  45 #include <sys/fcntl.h>
  46 #include <sys/mbuf.h>
  47 #include <sys/socket.h>
  48 #include <sys/socketvar.h>
  49 #include <net/if.h>
  50
  51 #include <netat/sysglue.h>
  52 #include <netat/appletalk.h>
  53 #include <netat/at_var.h>
  54 #include <netat/routing_tables.h>
  55 #include <netat/at_pcb.h>
  56 #include <netat/aurp.h>
  57 #include <netat/debug.h>
  58
  59 /*
  60  * Not using the stream queue for data; keep this around to handle
  61  *  requests from the user proc (mostly setup).
  62  */
  63 int
  64 aurp_wput(gref, m)
  65         gref_t *gref;
  66         gbuf_t *m;
  67 {
  68         register ioc_t *iocbp;
  69         register gbuf_t *mdata;
  70         register int temp, error;
  71
  72         switch (gbuf_type(m)) {
  73
  74         case MSG_IOCTL:
  75                 iocbp = (ioc_t *)gbuf_rptr(m);
  76                 switch (iocbp->ioc_cmd) {
  77                 case AUC_CFGTNL: /* set up a tunnel, init the AURP daemon */
  78                         mdata = gbuf_cont(m);
  79                         temp = (int)(*gbuf_rptr(mdata));
  80                         if (temp != dst_addr_cnt) {
  81                                 AURPiocnak(gref, m, ENOSPC);
  82                                 return 0;
  83                         }
  84                         if ((error = aurpd_start()) != 0) {
  85                                 AURPiocnak(gref, m, error);
  86                                 return 0;
  87                         }
  88                         if (AURPinit()) {
  89                                 AURPiocnak(gref, m, ENOMEM);
  90                                 return 0;
  91                         }
  92                         ddp_AURPfuncx(AURPCODE_AURPPROTO, 0, 0);
  93                         AURPaccess();
  94                         break;
  95
  96                 case AUC_SHTDOWN: /* shutdown AURP operation */
  97                         AURPshutdown();
  98                         break;
  99
 100                 case AUC_EXPNET: /* configure networks to be exported */
 101                 case AUC_HIDENET: /* configure networks to be hiden */
 102                         mdata = gbuf_cont(m);
 103                         net_access_cnt = (gbuf_len(mdata))/sizeof(short);
 104                         if ((net_access_cnt==0) || (net_access_cnt>AURP_MaxNetAccess)) {
 105                                 AURPiocnak(gref, m, EINVAL);
 106                                 return 0;
 107                         }
 108                         bcopy(gbuf_rptr(mdata), net_access,
 109                               gbuf_len(mdata));
 110                         if (iocbp->ioc_cmd == AUC_EXPNET)
 111                                 net_export = 1;
 112                         break;
 113
 114                 case AUC_UDPPORT:
 115                         mdata = gbuf_cont(m);
 116                         aurp_global.udp_port = *(char *)gbuf_rptr(mdata);
 117                         break;
 118
 119                 case AUC_NETLIST:
 120                         mdata = gbuf_cont(m);
 121                         /*
 122                          * Compute # addrs, Save for later check
 123                          * We cheat with a shift.
 124                          */
 125                         dst_addr_cnt = ((gbuf_len(mdata)) >> 2)-1;
 126                         bcopy(gbuf_rptr(mdata), &aurp_global.dst_addr,
 127                               gbuf_len(mdata));
 128                         aurp_global.src_addr = aurp_global.dst_addr[0];
 129                         aurp_global.dst_addr[0] = 0;
 130                         break;
 131
 132                 default:
 133                         AURPiocnak(gref, m, EINVAL);
 134                         return 0;
 135                 }
 136                 AURPiocack(gref, m);
 137                 break;
 138
 139         default:
 140                 dPrintf(D_M_AURP, D_L_WARNING,
 141                         ("aurp_wput: bad msg type=%d\n", gbuf_type(m)));
 142                 gbuf_freem(m);
 143                 break;
 144         }
 145
 146         return 0;
 147 }
 148
 149 /*
 150  * Insert an appletalk packet into the appletalk stack.
 151  * If it's an AURP data packet, just send it up; if it's AURP protocol,
 152  *  switch out here.
 153  */
 154
 155 int
 156 at_insert(m, type, node)
 157         register gbuf_t *m;
 158         register unsigned int type, node;
 159 {
 160         register aurp_hdr_t *hdrp;
 161         register aurp_state_t *state;
 162
 163         if (type == AUD_Atalk)
 164                 /* non-AURP proto packet */
 165                 ddp_AURPfuncx(AURPCODE_DATAPKT, m, node);
 166         else
 167         {       /* AURP proto packet */
 168                 state = (aurp_state_t *)&aurp_state[node];
 169                 state->tickle_retry = 0;
 170                 hdrp = (aurp_hdr_t *)gbuf_rptr(m);
 171
 172                 switch (hdrp->command_code) {
 173                 case AURPCMD_RIUpd:
 174                         AURPrcvRIUpd(state, m); break;
 175
 176                 case AURPCMD_RIReq:
 177                         AURPrcvRIReq(state, m); break;
 178
 179                 case AURPCMD_RIRsp:
 180                         AURPrcvRIRsp(state, m); break;
 181
 182                 case AURPCMD_RIAck:
 183                         AURPrcvRIAck(state, m); break;
 184
 185                 case AURPCMD_ZReq:
 186                         AURPrcvZReq(state, m); break;
 187
 188                 case AURPCMD_ZRsp:
 189                         AURPrcvZRsp(state, m); break;
 190
 191                 case AURPCMD_OpenReq:
 192                         AURPrcvOpenReq(state, m); break;
 193
 194                 case AURPCMD_OpenRsp:
 195                         AURPrcvOpenRsp(state, m); break;
 196
 197                 case AURPCMD_Tickle:
 198                         AURPrcvTickle(state, m); break;
 199
 200                 case AURPCMD_TickleAck:
 201                         AURPrcvTickleAck(state, m); break;
 202
 203                 case AURPCMD_RDReq:
 204                         AURPrcvRDReq(state, m); break;
 205
 206                 default:
 207                         dPrintf(D_M_AURP, D_L_WARNING,
 208                                 ("at_insert: bad proto cmd=%d\n",
 209                                 hdrp->command_code));
 210                         gbuf_freem(m);
 211                 }
 212         }
 213
 214         return 0;
 215 }