bsd/netat/aurp_rx.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  *      Copyright (c) 1996 Apple Computer, Inc.
  24  *
  25  *              Created April 8, 1996 by Tuyen Nguyen
  26  *              Modified for Kernel execution, May, 1996, Justin C. Walker
  27  *   Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
  28  *
  29  *      File: rx.c
  30  */
  31 #include <sys/errno.h>
  32 #include <sys/types.h>
  33 #include <sys/param.h>
  34 #include <machine/spl.h>
  35 #include <sys/systm.h>
  36 #include <sys/kernel.h>
  37 #include <sys/proc.h>
  38 #include <sys/filedesc.h>
  39 #include <sys/fcntl.h>
  40 #include <sys/mbuf.h>
  41 #include <sys/socket.h>
  42 #include <sys/socketvar.h>
  43 #include <net/if.h>
  44
  45 #include <netat/sysglue.h>
  46 #include <netat/appletalk.h>
  47 #include <netat/at_var.h>
  48 #include <netat/routing_tables.h>
  49 #include <netat/at_pcb.h>
  50 #include <netat/aurp.h>
  51 #include <netat/debug.h>
  52
  53 /*
  54  * Not using the stream queue for data; keep this around to handle
  55  *  requests from the user proc (mostly setup).
  56  */
  57 int
  58 aurp_wput(gref, m)
  59         gref_t *gref;
  60         gbuf_t *m;
  61 {
  62         register ioc_t *iocbp;
  63         register gbuf_t *mdata;
  64         register int temp, error;
  65
  66         switch (gbuf_type(m)) {
  67
  68         case MSG_IOCTL:
  69                 iocbp = (ioc_t *)gbuf_rptr(m);
  70                 switch (iocbp->ioc_cmd) {
  71                 case AUC_CFGTNL: /* set up a tunnel, init the AURP daemon */
  72                         mdata = gbuf_cont(m);
  73                         temp = (int)(*gbuf_rptr(mdata));
  74                         if (temp != dst_addr_cnt) {
  75                                 AURPiocnak(gref, m, ENOSPC);
  76                                 return 0;
  77                         }
  78                         if ((error = aurpd_start()) != 0) {
  79                                 AURPiocnak(gref, m, error);
  80                                 return 0;
  81                         }
  82                         if (AURPinit()) {
  83                                 AURPiocnak(gref, m, ENOMEM);
  84                                 return 0;
  85                         }
  86                         ddp_AURPfuncx(AURPCODE_AURPPROTO, 0, 0);
  87                         AURPaccess();
  88                         break;
  89
  90                 case AUC_SHTDOWN: /* shutdown AURP operation */
  91                         AURPshutdown();
  92                         break;
  93
  94                 case AUC_EXPNET: /* configure networks to be exported */
  95                 case AUC_HIDENET: /* configure networks to be hiden */
  96                         mdata = gbuf_cont(m);
  97                         net_access_cnt = (gbuf_len(mdata))/sizeof(short);
  98                         if ((net_access_cnt==0) || (net_access_cnt>AURP_MaxNetAccess)) {
  99                                 AURPiocnak(gref, m, EINVAL);
 100                                 return 0;
 101                         }
 102                         bcopy(gbuf_rptr(mdata), net_access,
 103                               gbuf_len(mdata));
 104                         if (iocbp->ioc_cmd == AUC_EXPNET)
 105                                 net_export = 1;
 106                         break;
 107
 108                 case AUC_UDPPORT:
 109                         aurp_global.udp_port = *(char *)gbuf_rptr(mdata);
 110                         break;
 111
 112                 case AUC_NETLIST:
 113                         mdata = gbuf_cont(m);
 114                         /*
 115                          * Compute # addrs, Save for later check
 116                          * We cheat with a shift.
 117                          */
 118                         dst_addr_cnt = ((gbuf_len(mdata)) >> 2)-1;
 119                         bcopy(gbuf_rptr(mdata), &aurp_global.dst_addr,
 120                               gbuf_len(mdata));
 121                         aurp_global.src_addr = aurp_global.dst_addr[0];
 122                         aurp_global.dst_addr[0] = 0;
 123                         break;
 124
 125                 default:
 126                         AURPiocnak(gref, m, EINVAL);
 127                         return 0;
 128                 }
 129                 AURPiocack(gref, m);
 130                 break;
 131
 132         default:
 133                 dPrintf(D_M_AURP, D_L_WARNING,
 134                         ("aurp_wput: bad msg type=%d\n", gbuf_type(m)));
 135                 gbuf_freem(m);
 136                 break;
 137         }
 138
 139         return 0;
 140 }
 141
 142 /*
 143  * Insert an appletalk packet into the appletalk stack.
 144  * If it's an AURP data packet, just send it up; if it's AURP protocol,
 145  *  switch out here.
 146  */
 147
 148 int
 149 at_insert(m, type, node)
 150         register gbuf_t *m;
 151         register unsigned int type, node;
 152 {
 153         register aurp_hdr_t *hdrp;
 154         register aurp_state_t *state;
 155
 156         if (type == AUD_Atalk)
 157                 /* non-AURP proto packet */
 158                 ddp_AURPfuncx(AURPCODE_DATAPKT, m, node);
 159         else
 160         {       /* AURP proto packet */
 161                 state = (aurp_state_t *)&aurp_state[node];
 162                 state->tickle_retry = 0;
 163                 hdrp = (aurp_hdr_t *)gbuf_rptr(m);
 164
 165                 switch (hdrp->command_code) {
 166                 case AURPCMD_RIUpd:
 167                         AURPrcvRIUpd(state, m); break;
 168
 169                 case AURPCMD_RIReq:
 170                         AURPrcvRIReq(state, m); break;
 171
 172                 case AURPCMD_RIRsp:
 173                         AURPrcvRIRsp(state, m); break;
 174
 175                 case AURPCMD_RIAck:
 176                         AURPrcvRIAck(state, m); break;
 177
 178                 case AURPCMD_ZReq:
 179                         AURPrcvZReq(state, m); break;
 180
 181                 case AURPCMD_ZRsp:
 182                         AURPrcvZRsp(state, m); break;
 183
 184                 case AURPCMD_OpenReq:
 185                         AURPrcvOpenReq(state, m); break;
 186
 187                 case AURPCMD_OpenRsp:
 188                         AURPrcvOpenRsp(state, m); break;
 189
 190                 case AURPCMD_Tickle:
 191                         AURPrcvTickle(state, m); break;
 192
 193                 case AURPCMD_TickleAck:
 194                         AURPrcvTickleAck(state, m); break;
 195
 196                 case AURPCMD_RDReq:
 197                         AURPrcvRDReq(state, m); break;
 198
 199                 default:
 200                         dPrintf(D_M_AURP, D_L_WARNING,
 201                                 ("at_insert: bad proto cmd=%d\n",
 202                                 hdrp->command_code));
 203                         gbuf_freem(m);
 204                 }
 205         }
 206
 207         return 0;
 208 }