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     UWORD i;
 350
 351     /* Fill in the broadcast address as destination */
 352
 353     for(i = 0; i < ETH_ADDRESSSIZE; i++)
 354         request->ios2_DstAddr[i] = 0xff;
 355
 356     /* Queue the write as normal */
 357
 358     return CmdWrite(LIBBASE, request);
 359 }
 360
 361 static BOOL CmdTrackType(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 362 {
 363     struct VIARHINEUnit *unit;
 364     struct Opener *opener;
 365     ULONG packet_type, wire_error=0;
 366     struct TypeTracker *tracker;
 367     struct TypeStats *initial_stats;
 368     BYTE error = 0;
 369
 370     unit = (APTR)request->ios2_Req.io_Unit;
 371
 372 D(bug("%s: S2CmdTrackType()\n", unit->rhineu_name));
 373
 374     packet_type = request->ios2_PacketType;
 375
 376     /* Get global tracker */
 377
 378     tracker = (struct TypeTracker *)
 379         FindTypeStats(LIBBASE, unit, &unit->rhineu_type_trackers, packet_type);
 380
 381     if(tracker != NULL)
 382         tracker->user_count++;
 383     else
 384     {
 385         tracker =
 386             AllocMem(sizeof(struct TypeTracker), MEMF_PUBLIC|MEMF_CLEAR);
 387         if(tracker != NULL)
 388         {
 389             tracker->packet_type = packet_type;
 390             tracker->user_count = 1;
 391
 392             Disable();
 393             AddTail((APTR)&unit->rhineu_type_trackers, (APTR)tracker);
 394             Enable();
 395         }
 396    }
 397
 398     /* Store initial figures for this opener */
 399
 400     opener = request->ios2_BufferManagement;
 401     initial_stats = FindTypeStats(LIBBASE, unit, &opener->initial_stats, packet_type);
 402
 403     if(initial_stats != NULL)
 404     {
 405         error = S2ERR_BAD_STATE;
 406         wire_error = S2WERR_ALREADY_TRACKED;
 407     }
 408
 409     if(error == 0)
 410     {
 411         initial_stats = AllocMem(sizeof(struct TypeStats), MEMF_PUBLIC);
 412         if(initial_stats == NULL)
 413         {
 414             error = S2ERR_NO_RESOURCES;
 415             wire_error = S2WERR_GENERIC_ERROR;
 416         }
 417     }
 418
 419     if(error == 0)
 420     {
 421         CopyMem(tracker, initial_stats, sizeof(struct TypeStats));
 422         AddTail((APTR)&opener->initial_stats, (APTR)initial_stats);
 423     }
 424
 425     /* Return */
 426
 427     request->ios2_Req.io_Error = error;
 428     request->ios2_WireError = wire_error;
 429     return TRUE;
 430 }
 431
 432 static BOOL CmdUntrackType(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 433 {
 434     struct VIARHINEUnit *unit;
 435     struct Opener *opener;
 436     ULONG packet_type;
 437     struct TypeTracker *tracker;
 438     struct TypeStats *initial_stats;
 439
 440     unit = (APTR)request->ios2_Req.io_Unit;
 441
 442 D(bug("%s: S2CmdUntrackType()\n", unit->rhineu_name));
 443
 444     packet_type = request->ios2_PacketType;
 445
 446     /* Get global tracker and initial figures */
 447
 448     tracker = (struct TypeTracker *)
 449         FindTypeStats(LIBBASE, unit, &unit->rhineu_type_trackers, packet_type);
 450     opener = request->ios2_BufferManagement;
 451     initial_stats = FindTypeStats(LIBBASE, unit, &opener->initial_stats, packet_type);
 452
 453     /* Decrement tracker usage and free unused structures */
 454
 455     if(initial_stats != NULL)
 456     {
 457         if((--tracker->user_count) == 0)
 458         {
 459             Disable();
 460             Remove((APTR)tracker);
 461             Enable();
 462             FreeMem(tracker, sizeof(struct TypeTracker));
 463         }
 464
 465         Remove((APTR)initial_stats);
 466         FreeMem(initial_stats, sizeof(struct TypeStats));
 467     }
 468     else
 469     {
 470         request->ios2_Req.io_Error = S2ERR_BAD_STATE;
 471         request->ios2_WireError = S2WERR_NOT_TRACKED;
 472     }
 473
 474     /* Return */
 475
 476     return TRUE;
 477 }
 478
 479 static BOOL CmdGetTypeStats(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 480 {
 481     struct VIARHINEUnit *unit;
 482     struct Opener *opener;
 483     ULONG packet_type;
 484     struct TypeStats *initial_stats, *tracker;
 485     struct Sana2PacketTypeStats *stats;
 486
 487     unit = (APTR)request->ios2_Req.io_Unit;
 488
 489 D(bug("%s: S2CmdGetTypeStats()\n", unit->rhineu_name));
 490
 491     packet_type = request->ios2_PacketType;
 492
 493     /* Get global tracker and initial figures */
 494
 495     tracker = FindTypeStats(LIBBASE, unit, &unit->rhineu_type_trackers, packet_type);
 496     opener = request->ios2_BufferManagement;
 497     initial_stats = FindTypeStats(LIBBASE, unit, &opener->initial_stats, packet_type);
 498
 499     /* Copy and adjust figures */
 500     if(initial_stats != NULL)
 501     {
 502         stats = request->ios2_StatData;
 503         CopyMem(&tracker->stats, stats, sizeof(struct Sana2PacketTypeStats));
 504         stats->PacketsSent -= initial_stats->stats.PacketsSent;
 505         stats->PacketsReceived -= initial_stats->stats.PacketsReceived;
 506         stats->BytesSent -= initial_stats->stats.BytesSent;
 507         stats->BytesReceived -= initial_stats->stats.BytesReceived;
 508         stats->PacketsDropped -= initial_stats->stats.PacketsDropped;
 509     }
 510     else
 511     {
 512         request->ios2_Req.io_Error = S2ERR_BAD_STATE;
 513         request->ios2_WireError = S2WERR_NOT_TRACKED;
 514     }
 515
 516     /* Return */
 517
 518     return TRUE;
 519 }
 520
 521 static BOOL CmdGetGlobalStats(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 522 {
 523     struct VIARHINEUnit *unit;
 524
 525     /* Update and copy stats */
 526
 527     unit = (APTR)request->ios2_Req.io_Unit;
 528
 529 D(bug("%s: S2CmdGetGlobalStats()\n", unit->rhineu_name));
 530
 531     CopyMem(&unit->rhineu_stats, request->ios2_StatData,
 532         sizeof(struct Sana2DeviceStats));
 533
 534     /* Return */
 535
 536     return TRUE;
 537 }
 538
 539 static BOOL CmdDeviceQuery(LIBBASETYPEPTR LIBBASE, struct IOStdReq *request)
 540 {
 541     struct NSDeviceQueryResult *info;
 542
 543     /* Set structure size twice */
 544
 545     info = request->io_Data;
 546     request->io_Actual = info->SizeAvailable =
 547         offsetof(struct NSDeviceQueryResult, SupportedCommands) + sizeof(APTR);
 548
 549     /* Report device details */
 550
 551     info->DeviceType = NSDEVTYPE_SANA2;
 552     info->DeviceSubType = 0;
 553
 554     info->SupportedCommands = (APTR)supported_commands;
 555
 556     /* Return */
 557
 558     return TRUE;
 559 }
 560
 561 static BOOL CmdOnEvent(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 562 {
 563     struct VIARHINEUnit *unit;
 564     ULONG events, wanted_events;
 565     BOOL complete = FALSE;
 566
 567     /* Check if we understand the event types */
 568
 569     unit = (APTR)request->ios2_Req.io_Unit;
 570
 571 D(bug("%s: S2CmdOnEvent()\n", unit->rhineu_name));
 572
 573     wanted_events = request->ios2_WireError;
 574     if((wanted_events & ~KNOWN_EVENTS) != 0)
 575     {
 576         request->ios2_Req.io_Error = S2ERR_NOT_SUPPORTED;
 577         events = S2WERR_BAD_EVENT;
 578     }
 579     else
 580     {
 581         if((unit->rhineu_flags & IFF_UP) != 0)
 582             events = S2EVENT_ONLINE;
 583         else
 584             events = S2EVENT_OFFLINE;
 585
 586         events &= wanted_events;
 587     }
 588
 589     /* Reply request if a wanted event has already occurred */
 590
 591     if(events != 0)
 592     {
 593         request->ios2_WireError = events;
 594         complete = TRUE;
 595     }
 596     else
 597     {
 598         request->ios2_Req.io_Flags &= ~IOF_QUICK;
 599         PutMsg(unit->rhineu_request_ports[EVENT_QUEUE], (APTR)request);
 600     }
 601
 602     /* Return */
 603
 604     return complete;
 605 }
 606
 607 static BOOL CmdReadOrphan(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 608 {
 609     struct VIARHINEUnit *unit;
 610     BYTE error = 0;
 611     ULONG wire_error;
 612     BOOL complete = FALSE;
 613
 614     /* Check request is valid */
 615
 616     unit = (APTR)request->ios2_Req.io_Unit;
 617 D(bug("%s: S2CmdReadOrphan()\n", unit->rhineu_name));
 618
 619     if((unit->rhineu_flags & IFF_UP) == 0)
 620     {
 621         error = S2ERR_OUTOFSERVICE;
 622         wire_error = S2WERR_UNIT_OFFLINE;
 623     }
 624
 625     /* Queue request */
 626
 627     if(error == 0)
 628     {
 629         request->ios2_Req.io_Flags &= ~IOF_QUICK;
 630         PutMsg(unit->rhineu_request_ports[ADOPT_QUEUE], (struct Message *)request);
 631     }
 632     else
 633     {
 634         request->ios2_Req.io_Error = error;
 635         request->ios2_WireError = wire_error;
 636         complete = TRUE;
 637     }
 638
 639     /* Return */
 640
 641     return complete;
 642 }
 643
 644 static BOOL CmdOnline(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 645 {
 646     struct VIARHINEUnit *unit = (struct VIARHINEUnit *)request->ios2_Req.io_Unit;
 647     BYTE error = 0;
 648     ULONG wire_error = 0;
 649     UWORD i;
 650
 651 D(bug("%s: S2CmdOnline()\n", unit->rhineu_name));
 652
 653     /* Check request is valid */
 654     if((unit->rhineu_flags & IFF_CONFIGURED) == 0)
 655     {
 656         error = S2ERR_BAD_STATE;
 657         wire_error = S2WERR_NOT_CONFIGURED;
 658     }
 659
 660     /* Clear global and special stats and put adapter back online */
 661
 662     if((error == 0) && ((unit->rhineu_flags & IFF_UP) == 0))
 663     {
 664         unit->rhineu_stats.PacketsReceived = 0;
 665         unit->rhineu_stats.PacketsSent = 0;
 666         unit->rhineu_stats.BadData = 0;
 667         unit->rhineu_stats.Overruns = 0;
 668         unit->rhineu_stats.UnknownTypesReceived = 0;
 669         unit->rhineu_stats.Reconfigurations = 0;
 670
 671         for(i = 0; i < STAT_COUNT; i++)
 672             unit->rhineu_special_stats[i] = 0;
 673
 674         if (unit->start(unit))
 675         {
 676             error = S2ERR_OUTOFSERVICE;
 677             wire_error = S2WERR_GENERIC_ERROR;
 678         }
 679     }
 680
 681     /* Return */
 682
 683     request->ios2_Req.io_Error = error;
 684     request->ios2_WireError = wire_error;
 685     return TRUE;
 686 }
 687
 688 static BOOL CmdOffline(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 689 {
 690     struct VIARHINEUnit *unit;
 691
 692     /* Put adapter offline */
 693
 694     unit = (APTR)request->ios2_Req.io_Unit;
 695
 696 D(bug("%s: S2CmdOffline()\n", unit->rhineu_name));
 697
 698     if((unit->rhineu_flags & IFF_UP) != 0)
 699         unit->stop(unit);
 700
 701     /* Return */
 702     return TRUE;
 703 }
 704
 705 static BOOL CmdAddMulticastAddresses(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 706 {
 707     struct VIARHINEUnit *unit;
 708     UBYTE *lower_bound, *upper_bound;
 709
 710     unit = (APTR)request->ios2_Req.io_Unit;
 711
 712 D(bug("%s: S2CmdAddMulticastAddresses()\n", unit->rhineu_name));
 713
 714     lower_bound = request->ios2_SrcAddr;
 715     if(request->ios2_Req.io_Command == S2_ADDMULTICASTADDRESS)
 716         upper_bound = lower_bound;
 717     else
 718         upper_bound = request->ios2_DstAddr;
 719
 720     if(!AddMulticastRange(LIBBASE, unit, lower_bound, upper_bound))
 721     {
 722         request->ios2_Req.io_Error = S2ERR_NO_RESOURCES;
 723         request->ios2_WireError = S2WERR_GENERIC_ERROR;
 724     }
 725
 726     /* Return */
 727
 728     return TRUE;
 729 }
 730
 731 static BOOL CmdDelMulticastAddresses(LIBBASETYPEPTR LIBBASE, struct IOSana2Req *request)
 732 {
 733     struct VIARHINEUnit *unit;
 734     UBYTE *lower_bound, *upper_bound;
 735
 736     unit = (APTR)request->ios2_Req.io_Unit;
 737
 738 D(bug("%s: S2CmdDelMulticastAddresses()\n", unit->rhineu_name));
 739
 740     lower_bound = request->ios2_SrcAddr;
 741     if(request->ios2_Req.io_Command == S2_DELMULTICASTADDRESS)
 742         upper_bound = lower_bound;
 743     else
 744         upper_bound = request->ios2_DstAddr;
 745
 746     if(!RemMulticastRange(LIBBASE, unit, lower_bound, upper_bound))
 747     {
 748         request->ios2_Req.io_Error = S2ERR_BAD_STATE;
 749         request->ios2_WireError = S2WERR_BAD_MULTICAST;
 750     }
 751
 752     /* Return */
 753
 754     return TRUE;
 755 }