workbench/devs/networks/via-rhine/handler.c

   1 /*
   2  * $Id$
   3  */
   4
   5 /*
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful, but
  12     WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14     General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  19     MA 02111-1307, USA.
  20 */
  21
  22 #include <exec/types.h>
  23 #include <exec/resident.h>
  24 #include <exec/io.h>
  25 #include <exec/ports.h>
  26 #include <exec/errors.h>
  27
  28 #include <devices/sana2.h>
  29 #include <devices/sana2specialstats.h>
  30 #include <devices/newstyle.h>
  31
  32 #include <utility/utility.h>
  33 #include <utility/tagitem.h>
  34 #include <utility/hooks.h>
  35
  36 #include <proto/exec.h>
  37 #include <proto/dos.h>
  38 #include <proto/battclock.h>
  39
  40 #include <stdlib.h>
  41
  42 #include "via-rhine.h"
  43 #include "unit.h"
  44 #include LC_LIBDEFS_FILE
  45
  46 #define KNOWN_EVENTS \
  47     (S2EVENT_ERROR | S2EVENT_TX | S2EVENT_RX | S2EVENT_ONLINE \
  48     | S2EVENT_OFFLINE | S2EVENT_BUFF | S2EVENT_HARDWARE | S2EVENT_SOFTWARE)
  49
  50 static BOOL CmdInvalid(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  51 static BOOL CmdRead(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  52 static BOOL CmdWrite(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  53 static BOOL CmdFlush(LIBBASETYPEPTR LIBBASE, struct IORequest *request);
  54 static BOOL CmdS2DeviceQuery(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  55 static BOOL CmdGetStationAddress(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  56 static BOOL CmdConfigInterface(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  57 static BOOL CmdBroadcast(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  58 static BOOL CmdTrackType(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  59 static BOOL CmdUntrackType(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  60 static BOOL CmdGetTypeStats(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  61 static BOOL CmdGetGlobalStats(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  62 static BOOL CmdDeviceQuery(LIBBASETYPEPTR LIBBASE, struct IOStdReq *request);
  63 static BOOL CmdOnEvent(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  64 static BOOL CmdReadOrphan(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  65 static BOOL CmdOnline(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  66 static BOOL CmdOffline(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  67 static BOOL CmdAddMulticastAddresses(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  68 static BOOL CmdDelMulticastAddresses(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request);
  69
  70 static const UWORD supported_commands[] =
  71 {
  72     CMD_READ,
  73     CMD_WRITE,
  74     CMD_FLUSH,
  75     S2_DEVICEQUERY,
  76     S2_GETSTATIONADDRESS,
  77     S2_CONFIGINTERFACE,
  78     S2_ADDMULTICASTADDRESS,
  79     S2_DELMULTICASTADDRESS,
  80     S2_MULTICAST,
  81     S2_BROADCAST,
  82     S2_TRACKTYPE,
  83     S2_UNTRACKTYPE,
  84     S2_GETTYPESTATS,
  85 //    S2_GETSPECIALSTATS,
  86     S2_GETGLOBALSTATS,
  87     S2_ONEVENT,
  88     S2_READORPHAN,
  89     S2_ONLINE,
  90     S2_OFFLINE,
  91     NSCMD_DEVICEQUERY,
  92     S2_ADDMULTICASTADDRESSES,
  93     S2_DELMULTICASTADDRESSES,
  94     0
  95 };
  96
  97 void handle_request(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
  98 {
  99     BOOL complete;
 100
 101     switch(request->ios2_Req.io_Command)
 102     {
 103         case CMD_READ:
 104             complete = CmdRead(LIBBASE, request);
 105             break;
 106
 107         case CMD_WRITE:
 108         case S2_MULTICAST:
 109             complete = CmdWrite(LIBBASE, request);
 110             break;
 111
 112         case CMD_FLUSH:
 113             complete = CmdFlush(LIBBASE, (struct IORequest *)request);
 114             break;
 115
 116         case S2_DEVICEQUERY:
 117             complete = CmdS2DeviceQuery(LIBBASE, request);
 118             break;
 119
 120         case S2_GETSTATIONADDRESS:
 121             complete = CmdGetStationAddress(LIBBASE, request);
 122             break;
 123
 124         case S2_CONFIGINTERFACE:
 125             complete = CmdConfigInterface(LIBBASE, request);
 126             break;
 127
 128         case S2_BROADCAST:
 129             complete = CmdBroadcast(LIBBASE, request);
 130             break;
 131
 132         case S2_TRACKTYPE:
 133             complete = CmdTrackType(LIBBASE, request);
 134             break;
 135
 136         case S2_UNTRACKTYPE:
 137             complete = CmdUntrackType(LIBBASE, request);
 138             break;
 139
 140         case S2_GETTYPESTATS:
 141             complete = CmdGetTypeStats(LIBBASE, request);
 142             break;
 143
 144         case S2_GETGLOBALSTATS:
 145             complete = CmdGetGlobalStats(LIBBASE, request);
 146             break;
 147
 148         case S2_ONEVENT:
 149             complete = CmdOnEvent(LIBBASE, request);
 150             break;
 151
 152         case S2_READORPHAN:
 153             complete = CmdReadOrphan(LIBBASE, request);
 154             break;
 155
 156         case S2_ONLINE:
 157             complete = CmdOnline(LIBBASE, request);
 158             break;
 159
 160         case S2_OFFLINE:
 161             complete = CmdOffline(LIBBASE, request);
 162             break;
 163
 164         case S2_ADDMULTICASTADDRESS:
 165         case S2_ADDMULTICASTADDRESSES:
 166             complete = CmdAddMulticastAddresses(LIBBASE, request);
 167             break;
 168
 169         case S2_DELMULTICASTADDRESS:
 170         case S2_DELMULTICASTADDRESSES:
 171             complete = CmdDelMulticastAddresses(LIBBASE, request);
 172             break;
 173
 174         case NSCMD_DEVICEQUERY:
 175             complete = CmdDeviceQuery(LIBBASE, (struct IOStdReq *)request);
 176             break;
 177
 178         default:
 179             complete = CmdInvalid(LIBBASE, request);
 180     }
 181
 182     if(complete && (request->ios2_Req.io_Flags & IOF_QUICK) == 0)
 183         ReplyMsg((APTR)request);
 184
 185     ReleaseSemaphore(&((struct VIARHINEUnit *)request->ios2_Req.io_Unit)->rhineu_unit_lock);
 186 }
 187
 188 static BOOL CmdInvalid(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 189 {
 190     request->ios2_Req.io_Error = IOERR_NOCMD;
 191     request->ios2_WireError = S2WERR_GENERIC_ERROR;
 192
 193     return TRUE;
 194 }
 195
 196 static BOOL CmdRead(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 197 {
 198     struct VIARHINEUnit *unit;
 199     struct Opener *opener;
 200     BOOL complete = FALSE;
 201
 202     unit = (APTR)request->ios2_Req.io_Unit;
 203
 204 D(bug("%s: S2CmdRead()\n", unit->rhineu_name));
 205
 206     if((unit->rhineu_flags & IFF_UP) != 0)
 207     {
 208         opener = request->ios2_BufferManagement;
 209         request->ios2_Req.io_Flags &= ~IOF_QUICK;
 210         PutMsg(&opener->read_port, (struct Message *)request);
 211     }
 212     else
 213     {
 214         request->ios2_Req.io_Error = S2ERR_OUTOFSERVICE;
 215         request->ios2_WireError = S2WERR_UNIT_OFFLINE;
 216         complete = TRUE;
 217     }
 218
 219     /* Return */
 220
 221     return complete;
 222 }
 223
 224 static BOOL CmdWrite(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 225 {
 226     struct VIARHINEUnit *unit;
 227     BYTE error = 0;
 228     ULONG wire_error = S2WERR_GENERIC_ERROR;
 229     BOOL complete = FALSE;
 230
 231     /* Check request is valid */
 232
 233     unit = (APTR)request->ios2_Req.io_Unit;
 234
 235 D(bug("%s: S2CmdWrite()\n", unit->rhineu_name));
 236
 237     if((unit->rhineu_flags & IFF_UP) == 0)
 238     {
 239         error = S2ERR_OUTOFSERVICE;
 240         wire_error = S2WERR_UNIT_OFFLINE;
 241     }
 242     else if((request->ios2_Req.io_Command == S2_MULTICAST) &&
 243             ((request->ios2_DstAddr[0] & 0x1) == 0))
 244     {
 245         error = S2ERR_BAD_ADDRESS;
 246         wire_error = S2WERR_BAD_MULTICAST;
 247     }
 248
 249     /* Queue request for sending */
 250
 251     if(error == 0) {
 252         request->ios2_Req.io_Flags &= ~IOF_QUICK;
 253         PutMsg(unit->rhineu_request_ports[WRITE_QUEUE], (APTR)request);
 254     }
 255     else
 256     {
 257         request->ios2_Req.io_Error = error;
 258         request->ios2_WireError = wire_error;
 259         complete = TRUE;
 260     }
 261
 262     /* Return */
 263
 264     return complete;
 265 }
 266
 267 static BOOL CmdFlush(LIBBASETYPEPTR LIBBASE, struct IORequest *request)
 268 {
 269     FlushUnit(LIBBASE, (APTR)request->io_Unit, EVENT_QUEUE, IOERR_ABORTED);
 270     return TRUE;
 271 }
 272
 273 static BOOL CmdS2DeviceQuery(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 274 {
 275     D(struct VIARHINEUnit *unit = (APTR)request->ios2_Req.io_Unit);
 276     // struct fe_priv *np = unit->rhineu_fe_priv;
 277     struct Sana2DeviceQuery *info;
 278     ULONG size_available, size;
 279
 280 D(bug("%s: S2CmdDeviceQuery()\n", unit->rhineu_name));
 281
 282     /* Copy device info */
 283
 284     info = request->ios2_StatData;
 285     size = size_available = info->SizeAvailable;
 286     if(size > sizeof(struct Sana2DeviceQuery))
 287         size = sizeof(struct Sana2DeviceQuery);
 288
 289     CopyMem(&LIBBASE->rhineb_Sana2Info, info, size);
 290
 291     info->BPS = 100000000;
 292     info->MTU = ETH_MTU;
 293     info->HardwareType = S2WireType_Ethernet;
 294     info->SizeAvailable = size_available;
 295     info->SizeSupplied = size;
 296
 297     /* Return */
 298
 299     return TRUE;
 300 }
 301
 302 static BOOL CmdGetStationAddress(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 303 {
 304     struct VIARHINEUnit *unit;
 305
 306     /* Copy addresses */
 307
 308     unit = (APTR)request->ios2_Req.io_Unit;
 309
 310 D(bug("%s: S2CmdGetStationAddress()\n", unit->rhineu_name));
 311
 312     CopyMem(unit->rhineu_dev_addr, request->ios2_SrcAddr, ETH_ADDRESSSIZE);
 313     CopyMem(unit->rhineu_org_addr, request->ios2_DstAddr, ETH_ADDRESSSIZE);
 314
 315     /* Return */
 316
 317     return TRUE;
 318 }
 319
 320 static BOOL CmdConfigInterface(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 321 {
 322     struct VIARHINEUnit *unit;
 323
 324     /* Configure adapter */
 325
 326     unit = (APTR)request->ios2_Req.io_Unit;
 327
 328 D(bug("%s: S2CmdConfigInterface()\n", unit->rhineu_name));
 329
 330     if((unit->rhineu_flags & IFF_CONFIGURED) == 0)
 331     {
 332         CopyMem(request->ios2_SrcAddr, unit->rhineu_dev_addr, ETH_ADDRESSSIZE);
 333         unit->set_mac_address(unit);
 334         unit->rhineu_flags |= IFF_CONFIGURED;
 335     }
 336     else
 337     {
 338         request->ios2_Req.io_Error = S2ERR_BAD_STATE;
 339         request->ios2_WireError = S2WERR_IS_CONFIGURED;
 340     }
 341
 342     /* Return */
 343
 344     return TRUE;
 345 }
 346
 347 static BOOL CmdBroadcast(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 348 {
 349     /* Fill in the broadcast address as destination */
 350
 351     *((ULONG *)request->ios2_DstAddr) = 0xffffffff;
 352     *((UWORD *)(request->ios2_DstAddr + 4)) = 0xffff;
 353
 354     /* Queue the write as normal */
 355
 356     return CmdWrite(LIBBASE, request);
 357 }
 358
 359 static BOOL CmdTrackType(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 360 {
 361     struct VIARHINEUnit *unit;
 362     struct Opener *opener;
 363     ULONG packet_type, wire_error=0;
 364     struct TypeTracker *tracker;
 365     struct TypeStats *initial_stats;
 366     BYTE error = 0;
 367
 368     unit = (APTR)request->ios2_Req.io_Unit;
 369
 370 D(bug("%s: S2CmdTrackType()\n", unit->rhineu_name));
 371
 372     packet_type = request->ios2_PacketType;
 373
 374     /* Get global tracker */
 375
 376     tracker = (struct TypeTracker *)
 377         FindTypeStats(LIBBASE, unit, &unit->rhineu_type_trackers, packet_type);
 378
 379     if(tracker != NULL)
 380         tracker->user_count++;
 381     else
 382     {
 383         tracker =
 384             AllocMem(sizeof(struct TypeTracker), MEMF_PUBLIC|MEMF_CLEAR);
 385         if(tracker != NULL)
 386         {
 387             tracker->packet_type = packet_type;
 388             tracker->user_count = 1;
 389
 390             Disable();
 391             AddTail((APTR)&unit->rhineu_type_trackers, (APTR)tracker);
 392             Enable();
 393         }
 394    }
 395
 396     /* Store initial figures for this opener */
 397
 398     opener = request->ios2_BufferManagement;
 399     initial_stats = FindTypeStats(LIBBASE, unit, &opener->initial_stats, packet_type);
 400
 401     if(initial_stats != NULL)
 402     {
 403         error = S2ERR_BAD_STATE;
 404         wire_error = S2WERR_ALREADY_TRACKED;
 405     }
 406
 407     if(error == 0)
 408     {
 409         initial_stats = AllocMem(sizeof(struct TypeStats), MEMF_PUBLIC);
 410         if(initial_stats == NULL)
 411         {
 412             error = S2ERR_NO_RESOURCES;
 413             wire_error = S2WERR_GENERIC_ERROR;
 414         }
 415     }
 416
 417     if(error == 0)
 418     {
 419         CopyMem(tracker, initial_stats, sizeof(struct TypeStats));
 420         AddTail((APTR)&opener->initial_stats, (APTR)initial_stats);
 421     }
 422
 423     /* Return */
 424
 425     request->ios2_Req.io_Error = error;
 426     request->ios2_WireError = wire_error;
 427     return TRUE;
 428 }
 429
 430 static BOOL CmdUntrackType(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 431 {
 432     struct VIARHINEUnit *unit;
 433     struct Opener *opener;
 434     ULONG packet_type;
 435     struct TypeTracker *tracker;
 436     struct TypeStats *initial_stats;
 437
 438     unit = (APTR)request->ios2_Req.io_Unit;
 439
 440 D(bug("%s: S2CmdUntrackType()\n", unit->rhineu_name));
 441
 442     packet_type = request->ios2_PacketType;
 443
 444     /* Get global tracker and initial figures */
 445
 446     tracker = (struct TypeTracker *)
 447         FindTypeStats(LIBBASE, unit, &unit->rhineu_type_trackers, packet_type);
 448     opener = request->ios2_BufferManagement;
 449     initial_stats = FindTypeStats(LIBBASE, unit, &opener->initial_stats, packet_type);
 450
 451     /* Decrement tracker usage and free unused structures */
 452
 453     if(initial_stats != NULL)
 454     {
 455         if((--tracker->user_count) == 0)
 456         {
 457             Disable();
 458             Remove((APTR)tracker);
 459             Enable();
 460             FreeMem(tracker, sizeof(struct TypeTracker));
 461         }
 462
 463         Remove((APTR)initial_stats);
 464         FreeMem(initial_stats, sizeof(struct TypeStats));
 465     }
 466     else
 467     {
 468         request->ios2_Req.io_Error = S2ERR_BAD_STATE;
 469         request->ios2_WireError = S2WERR_NOT_TRACKED;
 470     }
 471
 472     /* Return */
 473
 474     return TRUE;
 475 }
 476
 477 static BOOL CmdGetTypeStats(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 478 {
 479     struct VIARHINEUnit *unit;
 480     struct Opener *opener;
 481     ULONG packet_type;
 482     struct TypeStats *initial_stats, *tracker;
 483     struct Sana2PacketTypeStats *stats;
 484
 485     unit = (APTR)request->ios2_Req.io_Unit;
 486
 487 D(bug("%s: S2CmdGetTypeStats()\n", unit->rhineu_name));
 488
 489     packet_type = request->ios2_PacketType;
 490
 491     /* Get global tracker and initial figures */
 492
 493     tracker = FindTypeStats(LIBBASE, unit, &unit->rhineu_type_trackers, packet_type);
 494     opener = request->ios2_BufferManagement;
 495     initial_stats = FindTypeStats(LIBBASE, unit, &opener->initial_stats, packet_type);
 496
 497     /* Copy and adjust figures */
 498     if(initial_stats != NULL)
 499     {
 500         stats = request->ios2_StatData;
 501         CopyMem(&tracker->stats, stats, sizeof(struct Sana2PacketTypeStats));
 502         stats->PacketsSent -= initial_stats->stats.PacketsSent;
 503         stats->PacketsReceived -= initial_stats->stats.PacketsReceived;
 504         stats->BytesSent -= initial_stats->stats.BytesSent;
 505         stats->BytesReceived -= initial_stats->stats.BytesReceived;
 506         stats->PacketsDropped -= initial_stats->stats.PacketsDropped;
 507     }
 508     else
 509     {
 510         request->ios2_Req.io_Error = S2ERR_BAD_STATE;
 511         request->ios2_WireError = S2WERR_NOT_TRACKED;
 512     }
 513
 514     /* Return */
 515
 516     return TRUE;
 517 }
 518
 519 static BOOL CmdGetGlobalStats(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 520 {
 521     struct VIARHINEUnit *unit;
 522
 523     /* Update and copy stats */
 524
 525     unit = (APTR)request->ios2_Req.io_Unit;
 526
 527 D(bug("%s: S2CmdGetGlobalStats()\n", unit->rhineu_name));
 528
 529     CopyMem(&unit->rhineu_stats, request->ios2_StatData,
 530         sizeof(struct Sana2DeviceStats));
 531
 532     /* Return */
 533
 534     return TRUE;
 535 }
 536
 537 static BOOL CmdDeviceQuery(LIBBASETYPEPTR LIBBASE, struct IOStdReq *request)
 538 {
 539     struct NSDeviceQueryResult *info;
 540
 541     /* Set structure size twice */
 542
 543     info = request->io_Data;
 544     request->io_Actual = info->SizeAvailable =
 545         offsetof(struct NSDeviceQueryResult, SupportedCommands) + sizeof(APTR);
 546
 547     /* Report device details */
 548
 549     info->DeviceType = NSDEVTYPE_SANA2;
 550     info->DeviceSubType = 0;
 551
 552     info->SupportedCommands = (APTR)supported_commands;
 553
 554     /* Return */
 555
 556     return TRUE;
 557 }
 558
 559 static BOOL CmdOnEvent(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 560 {
 561     struct VIARHINEUnit *unit;
 562     ULONG events, wanted_events;
 563     BOOL complete = FALSE;
 564
 565     /* Check if we understand the event types */
 566
 567     unit = (APTR)request->ios2_Req.io_Unit;
 568
 569 D(bug("%s: S2CmdOnEvent()\n", unit->rhineu_name));
 570
 571     wanted_events = request->ios2_WireError;
 572     if((wanted_events & ~KNOWN_EVENTS) != 0)
 573     {
 574         request->ios2_Req.io_Error = S2ERR_NOT_SUPPORTED;
 575         events = S2WERR_BAD_EVENT;
 576     }
 577     else
 578     {
 579         if((unit->rhineu_flags & IFF_UP) != 0)
 580             events = S2EVENT_ONLINE;
 581         else
 582             events = S2EVENT_OFFLINE;
 583
 584         events &= wanted_events;
 585     }
 586
 587     /* Reply request if a wanted event has already occurred */
 588
 589     if(events != 0)
 590     {
 591         request->ios2_WireError = events;
 592         complete = TRUE;
 593     }
 594     else
 595     {
 596         request->ios2_Req.io_Flags &= ~IOF_QUICK;
 597         PutMsg(unit->rhineu_request_ports[EVENT_QUEUE], (APTR)request);
 598     }
 599
 600     /* Return */
 601
 602     return complete;
 603 }
 604
 605 static BOOL CmdReadOrphan(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 606 {
 607     struct VIARHINEUnit *unit;
 608     BYTE error = 0;
 609     ULONG wire_error;
 610     BOOL complete = FALSE;
 611
 612     /* Check request is valid */
 613
 614     unit = (APTR)request->ios2_Req.io_Unit;
 615 D(bug("%s: S2CmdReadOrphan()\n", unit->rhineu_name));
 616
 617     if((unit->rhineu_flags & IFF_UP) == 0)
 618     {
 619         error = S2ERR_OUTOFSERVICE;
 620         wire_error = S2WERR_UNIT_OFFLINE;
 621     }
 622
 623     /* Queue request */
 624
 625     if(error == 0)
 626     {
 627         request->ios2_Req.io_Flags &= ~IOF_QUICK;
 628         PutMsg(unit->rhineu_request_ports[ADOPT_QUEUE], (struct Message *)request);
 629     }
 630     else
 631     {
 632         request->ios2_Req.io_Error = error;
 633         request->ios2_WireError = wire_error;
 634         complete = TRUE;
 635     }
 636
 637     /* Return */
 638
 639     return complete;
 640 }
 641
 642 static BOOL CmdOnline(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 643 {
 644     struct VIARHINEUnit *unit = (struct VIARHINEUnit *)request->ios2_Req.io_Unit;
 645     BYTE error = 0;
 646     ULONG wire_error = 0;
 647     UWORD i;
 648
 649 D(bug("%s: S2CmdOnline()\n", unit->rhineu_name));
 650
 651     /* Check request is valid */
 652     if((unit->rhineu_flags & IFF_CONFIGURED) == 0)
 653     {
 654         error = S2ERR_BAD_STATE;
 655         wire_error = S2WERR_NOT_CONFIGURED;
 656     }
 657
 658     /* Clear global and special stats and put adapter back online */
 659
 660     if((error == 0) && ((unit->rhineu_flags & IFF_UP) == 0))
 661     {
 662         unit->rhineu_stats.PacketsReceived = 0;
 663         unit->rhineu_stats.PacketsSent = 0;
 664         unit->rhineu_stats.BadData = 0;
 665         unit->rhineu_stats.Overruns = 0;
 666         unit->rhineu_stats.UnknownTypesReceived = 0;
 667         unit->rhineu_stats.Reconfigurations = 0;
 668
 669         for(i = 0; i < STAT_COUNT; i++)
 670             unit->rhineu_special_stats[i] = 0;
 671
 672         if (unit->start(unit))
 673         {
 674             error = S2ERR_OUTOFSERVICE;
 675             wire_error = S2WERR_GENERIC_ERROR;
 676         }
 677     }
 678
 679     /* Return */
 680
 681     request->ios2_Req.io_Error = error;
 682     request->ios2_WireError = wire_error;
 683     return TRUE;
 684 }
 685
 686 static BOOL CmdOffline(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 687 {
 688     struct VIARHINEUnit *unit;
 689
 690     /* Put adapter offline */
 691
 692     unit = (APTR)request->ios2_Req.io_Unit;
 693
 694 D(bug("%s: S2CmdOffline()\n", unit->rhineu_name));
 695
 696     if((unit->rhineu_flags & IFF_UP) != 0)
 697         unit->stop(unit);
 698
 699     /* Return */
 700     return TRUE;
 701 }
 702
 703 static BOOL CmdAddMulticastAddresses(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 704 {
 705     struct VIARHINEUnit *unit;
 706     UBYTE *lower_bound, *upper_bound;
 707
 708     unit = (APTR)request->ios2_Req.io_Unit;
 709
 710 D(bug("%s: S2CmdAddMulticastAddresses()\n", unit->rhineu_name));
 711
 712     lower_bound = request->ios2_SrcAddr;
 713     if(request->ios2_Req.io_Command == S2_ADDMULTICASTADDRESS)
 714         upper_bound = lower_bound;
 715     else
 716         upper_bound = request->ios2_DstAddr;
 717
 718     if(!AddMulticastRange(LIBBASE, unit, lower_bound, upper_bound))
 719     {
 720         request->ios2_Req.io_Error = S2ERR_NO_RESOURCES;
 721         request->ios2_WireError = S2WERR_GENERIC_ERROR;
 722     }
 723
 724     /* Return */
 725
 726     return TRUE;
 727 }
 728
 729 static BOOL CmdDelMulticastAddresses(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 730 {
 731     struct VIARHINEUnit *unit;
 732     UBYTE *lower_bound, *upper_bound;
 733
 734     unit = (APTR)request->ios2_Req.io_Unit;
 735
 736 D(bug("%s: S2CmdDelMulticastAddresses()\n", unit->rhineu_name));
 737
 738     lower_bound = request->ios2_SrcAddr;
 739     if(request->ios2_Req.io_Command == S2_DELMULTICASTADDRESS)
 740         upper_bound = lower_bound;
 741     else
 742         upper_bound = request->ios2_DstAddr;
 743
 744     if(!RemMulticastRange(LIBBASE, unit, lower_bound, upper_bound))
 745     {
 746         request->ios2_Req.io_Error = S2ERR_BAD_STATE;
 747         request->ios2_WireError = S2WERR_BAD_MULTICAST;
 748     }
 749
 750     /* Return */
 751
 752     return TRUE;
 753 }