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   1 /*
   2  * RNDIS MSG parser
   3  *
   4  * Version:     $Id: rndis.c,v 1.19 2004/03/25 21:33:46 robert Exp $
   5  *
   6  * Authors:     Benedikt Spranger, Pengutronix
   7  *              Robert Schwebel, Pengutronix
   8  *
   9  *              This program is free software; you can redistribute it and/or
  10  *              modify it under the terms of the GNU General Public License
  11  *              version 2, as published by the Free Software Foundation.
  12  *
  13  *              This software was originally developed in conformance with
  14  *              Microsoft's Remote NDIS Specification License Agreement.
  15  *
  16  * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
  17  *              Fixed message length bug in init_response
  18  *
  19  * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
  20  *              Fixed rndis_rm_hdr length bug.
  21  *
  22  * Copyright (C) 2004 by David Brownell
  23  *              updates to merge with Linux 2.6, better match RNDIS spec
  24  */
  25
  26 #include <linux/config.h>
  27 #include <linux/module.h>
  28 #include <linux/moduleparam.h>
  29 #include <linux/kernel.h>
  30 #include <linux/errno.h>
  31 #include <linux/version.h>
  32 #include <linux/init.h>
  33 #include <linux/list.h>
  34 #include <linux/proc_fs.h>
  35 #include <linux/netdevice.h>
  36
  37 #include <asm/io.h>
  38 #include <asm/byteorder.h>
  39 #include <asm/system.h>
  40 #include <asm/unaligned.h>
  41
  42
  43 #undef  RNDIS_PM
  44 #undef  RNDIS_WAKEUP
  45 #undef  VERBOSE
  46
  47 #include "rndis.h"
  48
  49
  50 /* The driver for your USB chip needs to support ep0 OUT to work with
  51  * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
  52  *
  53  * Windows hosts need an INF file like Documentation/usb/linux.inf
  54  * and will be happier if you provide the host_addr module parameter.
  55  */
  56
  57 #if 0
  58 #define DEBUG(str,args...) do { \
  59         if (rndis_debug) \
  60                 printk(KERN_DEBUG str , ## args ); \
  61         } while (0)
  62 static int rndis_debug = 0;
  63
  64 module_param (rndis_debug, int, 0);
  65 MODULE_PARM_DESC (rndis_debug, "enable debugging");
  66
  67 #else
  68
  69 #define rndis_debug             0
  70 #define DEBUG(str,args...)      do{}while(0)
  71 #endif
  72
  73 #define RNDIS_MAX_CONFIGS       1
  74
  75
  76 static rndis_params rndis_per_dev_params [RNDIS_MAX_CONFIGS];
  77
  78 /* Driver Version */
  79 static const __le32 rndis_driver_version = __constant_cpu_to_le32 (1);
  80
  81 /* Function Prototypes */
  82 static rndis_resp_t *rndis_add_response (int configNr, u32 length);
  83
  84
  85 /* supported OIDs */
  86 static const u32 oid_supported_list [] =
  87 {
  88         /* the general stuff */
  89         OID_GEN_SUPPORTED_LIST,
  90         OID_GEN_HARDWARE_STATUS,
  91         OID_GEN_MEDIA_SUPPORTED,
  92         OID_GEN_MEDIA_IN_USE,
  93         OID_GEN_MAXIMUM_FRAME_SIZE,
  94         OID_GEN_LINK_SPEED,
  95         OID_GEN_TRANSMIT_BLOCK_SIZE,
  96         OID_GEN_RECEIVE_BLOCK_SIZE,
  97         OID_GEN_VENDOR_ID,
  98         OID_GEN_VENDOR_DESCRIPTION,
  99         OID_GEN_VENDOR_DRIVER_VERSION,
 100         OID_GEN_CURRENT_PACKET_FILTER,
 101         OID_GEN_MAXIMUM_TOTAL_SIZE,
 102         OID_GEN_MEDIA_CONNECT_STATUS,
 103         OID_GEN_PHYSICAL_MEDIUM,
 104 #if 0
 105         OID_GEN_RNDIS_CONFIG_PARAMETER,
 106 #endif
 107
 108         /* the statistical stuff */
 109         OID_GEN_XMIT_OK,
 110         OID_GEN_RCV_OK,
 111         OID_GEN_XMIT_ERROR,
 112         OID_GEN_RCV_ERROR,
 113         OID_GEN_RCV_NO_BUFFER,
 114 #ifdef  RNDIS_OPTIONAL_STATS
 115         OID_GEN_DIRECTED_BYTES_XMIT,
 116         OID_GEN_DIRECTED_FRAMES_XMIT,
 117         OID_GEN_MULTICAST_BYTES_XMIT,
 118         OID_GEN_MULTICAST_FRAMES_XMIT,
 119         OID_GEN_BROADCAST_BYTES_XMIT,
 120         OID_GEN_BROADCAST_FRAMES_XMIT,
 121         OID_GEN_DIRECTED_BYTES_RCV,
 122         OID_GEN_DIRECTED_FRAMES_RCV,
 123         OID_GEN_MULTICAST_BYTES_RCV,
 124         OID_GEN_MULTICAST_FRAMES_RCV,
 125         OID_GEN_BROADCAST_BYTES_RCV,
 126         OID_GEN_BROADCAST_FRAMES_RCV,
 127         OID_GEN_RCV_CRC_ERROR,
 128         OID_GEN_TRANSMIT_QUEUE_LENGTH,
 129 #endif  /* RNDIS_OPTIONAL_STATS */
 130
 131         /* mandatory 802.3 */
 132         /* the general stuff */
 133         OID_802_3_PERMANENT_ADDRESS,
 134         OID_802_3_CURRENT_ADDRESS,
 135         OID_802_3_MULTICAST_LIST,
 136         OID_802_3_MAC_OPTIONS,
 137         OID_802_3_MAXIMUM_LIST_SIZE,
 138
 139         /* the statistical stuff */
 140         OID_802_3_RCV_ERROR_ALIGNMENT,
 141         OID_802_3_XMIT_ONE_COLLISION,
 142         OID_802_3_XMIT_MORE_COLLISIONS,
 143 #ifdef  RNDIS_OPTIONAL_STATS
 144         OID_802_3_XMIT_DEFERRED,
 145         OID_802_3_XMIT_MAX_COLLISIONS,
 146         OID_802_3_RCV_OVERRUN,
 147         OID_802_3_XMIT_UNDERRUN,
 148         OID_802_3_XMIT_HEARTBEAT_FAILURE,
 149         OID_802_3_XMIT_TIMES_CRS_LOST,
 150         OID_802_3_XMIT_LATE_COLLISIONS,
 151 #endif  /* RNDIS_OPTIONAL_STATS */
 152
 153 #ifdef  RNDIS_PM
 154         /* PM and wakeup are mandatory for USB: */
 155
 156         /* power management */
 157         OID_PNP_CAPABILITIES,
 158         OID_PNP_QUERY_POWER,
 159         OID_PNP_SET_POWER,
 160
 161 #ifdef  RNDIS_WAKEUP
 162         /* wake up host */
 163         OID_PNP_ENABLE_WAKE_UP,
 164         OID_PNP_ADD_WAKE_UP_PATTERN,
 165         OID_PNP_REMOVE_WAKE_UP_PATTERN,
 166 #endif  /* RNDIS_WAKEUP */
 167 #endif  /* RNDIS_PM */
 168 };
 169
 170
 171 /* NDIS Functions */
 172 static int
 173 gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
 174                 rndis_resp_t *r)
 175 {
 176         int                     retval = -ENOTSUPP;
 177         u32                     length = 4;     /* usually */
 178         __le32                  *outbuf;
 179         int                     i, count;
 180         rndis_query_cmplt_type  *resp;
 181
 182         if (!r) return -ENOMEM;
 183         resp = (rndis_query_cmplt_type *) r->buf;
 184
 185         if (!resp) return -ENOMEM;
 186
 187         if (buf_len && rndis_debug > 1) {
 188                 DEBUG("query OID %08x value, len %d:\n", OID, buf_len);
 189                 for (i = 0; i < buf_len; i += 16) {
 190                         DEBUG ("%03d: %08x %08x %08x %08x\n", i,
 191                                 le32_to_cpup((__le32 *)&buf[i]),
 192                                 le32_to_cpup((__le32 *)&buf[i + 4]),
 193                                 le32_to_cpup((__le32 *)&buf[i + 8]),
 194                                 le32_to_cpup((__le32 *)&buf[i + 12]));
 195                 }
 196         }
 197
 198         /* response goes here, right after the header */
 199         outbuf = (__le32 *) &resp[1];
 200         resp->InformationBufferOffset = __constant_cpu_to_le32 (16);
 201
 202         switch (OID) {
 203
 204         /* general oids (table 4-1) */
 205
 206         /* mandatory */
 207         case OID_GEN_SUPPORTED_LIST:
 208                 DEBUG ("%s: OID_GEN_SUPPORTED_LIST\n", __FUNCTION__);
 209                 length = sizeof (oid_supported_list);
 210                 count  = length / sizeof (u32);
 211                 for (i = 0; i < count; i++)
 212                         outbuf[i] = cpu_to_le32 (oid_supported_list[i]);
 213                 retval = 0;
 214                 break;
 215
 216         /* mandatory */
 217         case OID_GEN_HARDWARE_STATUS:
 218                 DEBUG("%s: OID_GEN_HARDWARE_STATUS\n", __FUNCTION__);
 219                 /* Bogus question!
 220                  * Hardware must be ready to receive high level protocols.
 221                  * BTW:
 222                  * reddite ergo quae sunt Caesaris Caesari
 223                  * et quae sunt Dei Deo!
 224                  */
 225                 *outbuf = __constant_cpu_to_le32 (0);
 226                 retval = 0;
 227                 break;
 228
 229         /* mandatory */
 230         case OID_GEN_MEDIA_SUPPORTED:
 231                 DEBUG("%s: OID_GEN_MEDIA_SUPPORTED\n", __FUNCTION__);
 232                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
 233                 retval = 0;
 234                 break;
 235
 236         /* mandatory */
 237         case OID_GEN_MEDIA_IN_USE:
 238                 DEBUG("%s: OID_GEN_MEDIA_IN_USE\n", __FUNCTION__);
 239                 /* one medium, one transport... (maybe you do it better) */
 240                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
 241                 retval = 0;
 242                 break;
 243
 244         /* mandatory */
 245         case OID_GEN_MAXIMUM_FRAME_SIZE:
 246                 DEBUG("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __FUNCTION__);
 247                 if (rndis_per_dev_params [configNr].dev) {
 248                         *outbuf = cpu_to_le32 (
 249                                 rndis_per_dev_params [configNr].dev->mtu);
 250                         retval = 0;
 251                 }
 252                 break;
 253
 254         /* mandatory */
 255         case OID_GEN_LINK_SPEED:
 256                 if (rndis_debug > 1)
 257                         DEBUG("%s: OID_GEN_LINK_SPEED\n", __FUNCTION__);
 258                 if (rndis_per_dev_params [configNr].media_state
 259                                 == NDIS_MEDIA_STATE_DISCONNECTED)
 260                         *outbuf = __constant_cpu_to_le32 (0);
 261                 else
 262                         *outbuf = cpu_to_le32 (
 263                                 rndis_per_dev_params [configNr].speed);
 264                 retval = 0;
 265                 break;
 266
 267         /* mandatory */
 268         case OID_GEN_TRANSMIT_BLOCK_SIZE:
 269                 DEBUG("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __FUNCTION__);
 270                 if (rndis_per_dev_params [configNr].dev) {
 271                         *outbuf = cpu_to_le32 (
 272                                 rndis_per_dev_params [configNr].dev->mtu);
 273                         retval = 0;
 274                 }
 275                 break;
 276
 277         /* mandatory */
 278         case OID_GEN_RECEIVE_BLOCK_SIZE:
 279                 DEBUG("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __FUNCTION__);
 280                 if (rndis_per_dev_params [configNr].dev) {
 281                         *outbuf = cpu_to_le32 (
 282                                 rndis_per_dev_params [configNr].dev->mtu);
 283                         retval = 0;
 284                 }
 285                 break;
 286
 287         /* mandatory */
 288         case OID_GEN_VENDOR_ID:
 289                 DEBUG("%s: OID_GEN_VENDOR_ID\n", __FUNCTION__);
 290                 *outbuf = cpu_to_le32 (
 291                         rndis_per_dev_params [configNr].vendorID);
 292                 retval = 0;
 293                 break;
 294
 295         /* mandatory */
 296         case OID_GEN_VENDOR_DESCRIPTION:
 297                 DEBUG("%s: OID_GEN_VENDOR_DESCRIPTION\n", __FUNCTION__);
 298                 length = strlen (rndis_per_dev_params [configNr].vendorDescr);
 299                 memcpy (outbuf,
 300                         rndis_per_dev_params [configNr].vendorDescr, length);
 301                 retval = 0;
 302                 break;
 303
 304         case OID_GEN_VENDOR_DRIVER_VERSION:
 305                 DEBUG("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __FUNCTION__);
 306                 /* Created as LE */
 307                 *outbuf = rndis_driver_version;
 308                 retval = 0;
 309                 break;
 310
 311         /* mandatory */
 312         case OID_GEN_CURRENT_PACKET_FILTER:
 313                 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __FUNCTION__);
 314                 *outbuf = cpu_to_le32 (*rndis_per_dev_params[configNr].filter);
 315                 retval = 0;
 316                 break;
 317
 318         /* mandatory */
 319         case OID_GEN_MAXIMUM_TOTAL_SIZE:
 320                 DEBUG("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __FUNCTION__);
 321                 *outbuf = __constant_cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
 322                 retval = 0;
 323                 break;
 324
 325         /* mandatory */
 326         case OID_GEN_MEDIA_CONNECT_STATUS:
 327                 if (rndis_debug > 1)
 328                         DEBUG("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __FUNCTION__);
 329                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 330                                                 .media_state);
 331                 retval = 0;
 332                 break;
 333
 334         case OID_GEN_PHYSICAL_MEDIUM:
 335                 DEBUG("%s: OID_GEN_PHYSICAL_MEDIUM\n", __FUNCTION__);
 336                 *outbuf = __constant_cpu_to_le32 (0);
 337                 retval = 0;
 338                 break;
 339
 340         /* The RNDIS specification is incomplete/wrong.   Some versions
 341          * of MS-Windows expect OIDs that aren't specified there.  Other
 342          * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
 343          */
 344         case OID_GEN_MAC_OPTIONS:               /* from WinME */
 345                 DEBUG("%s: OID_GEN_MAC_OPTIONS\n", __FUNCTION__);
 346                 *outbuf = __constant_cpu_to_le32(
 347                           NDIS_MAC_OPTION_RECEIVE_SERIALIZED
 348                         | NDIS_MAC_OPTION_FULL_DUPLEX);
 349                 retval = 0;
 350                 break;
 351
 352         /* statistics OIDs (table 4-2) */
 353
 354         /* mandatory */
 355         case OID_GEN_XMIT_OK:
 356                 if (rndis_debug > 1)
 357                         DEBUG("%s: OID_GEN_XMIT_OK\n", __FUNCTION__);
 358                 if (rndis_per_dev_params [configNr].stats) {
 359                         *outbuf = cpu_to_le32 (
 360                             rndis_per_dev_params [configNr].stats->tx_packets -
 361                             rndis_per_dev_params [configNr].stats->tx_errors -
 362                             rndis_per_dev_params [configNr].stats->tx_dropped);
 363                         retval = 0;
 364                 }
 365                 break;
 366
 367         /* mandatory */
 368         case OID_GEN_RCV_OK:
 369                 if (rndis_debug > 1)
 370                         DEBUG("%s: OID_GEN_RCV_OK\n", __FUNCTION__);
 371                 if (rndis_per_dev_params [configNr].stats) {
 372                         *outbuf = cpu_to_le32 (
 373                             rndis_per_dev_params [configNr].stats->rx_packets -
 374                             rndis_per_dev_params [configNr].stats->rx_errors -
 375                             rndis_per_dev_params [configNr].stats->rx_dropped);
 376                         retval = 0;
 377                 }
 378                 break;
 379
 380         /* mandatory */
 381         case OID_GEN_XMIT_ERROR:
 382                 if (rndis_debug > 1)
 383                         DEBUG("%s: OID_GEN_XMIT_ERROR\n", __FUNCTION__);
 384                 if (rndis_per_dev_params [configNr].stats) {
 385                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 386                                         .stats->tx_errors);
 387                         retval = 0;
 388                 }
 389                 break;
 390
 391         /* mandatory */
 392         case OID_GEN_RCV_ERROR:
 393                 if (rndis_debug > 1)
 394                         DEBUG("%s: OID_GEN_RCV_ERROR\n", __FUNCTION__);
 395                 if (rndis_per_dev_params [configNr].stats) {
 396                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 397                                         .stats->rx_errors);
 398                         retval = 0;
 399                 }
 400                 break;
 401
 402         /* mandatory */
 403         case OID_GEN_RCV_NO_BUFFER:
 404                 DEBUG("%s: OID_GEN_RCV_NO_BUFFER\n", __FUNCTION__);
 405                 if (rndis_per_dev_params [configNr].stats) {
 406                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 407                                         .stats->rx_dropped);
 408                         retval = 0;
 409                 }
 410                 break;
 411
 412 #ifdef  RNDIS_OPTIONAL_STATS
 413         case OID_GEN_DIRECTED_BYTES_XMIT:
 414                 DEBUG("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __FUNCTION__);
 415                 /*
 416                  * Aunt Tilly's size of shoes
 417                  * minus antarctica count of penguins
 418                  * divided by weight of Alpha Centauri
 419                  */
 420                 if (rndis_per_dev_params [configNr].stats) {
 421                         *outbuf = cpu_to_le32 (
 422                                 (rndis_per_dev_params [configNr]
 423                                         .stats->tx_packets -
 424                                  rndis_per_dev_params [configNr]
 425                                          .stats->tx_errors -
 426                                  rndis_per_dev_params [configNr]
 427                                          .stats->tx_dropped)
 428                                 * 123);
 429                         retval = 0;
 430                 }
 431                 break;
 432
 433         case OID_GEN_DIRECTED_FRAMES_XMIT:
 434                 DEBUG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __FUNCTION__);
 435                 /* dito */
 436                 if (rndis_per_dev_params [configNr].stats) {
 437                         *outbuf = cpu_to_le32 (
 438                                 (rndis_per_dev_params [configNr]
 439                                         .stats->tx_packets -
 440                                  rndis_per_dev_params [configNr]
 441                                          .stats->tx_errors -
 442                                  rndis_per_dev_params [configNr]
 443                                          .stats->tx_dropped)
 444                                 / 123);
 445                         retval = 0;
 446                 }
 447                 break;
 448
 449         case OID_GEN_MULTICAST_BYTES_XMIT:
 450                 DEBUG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __FUNCTION__);
 451                 if (rndis_per_dev_params [configNr].stats) {
 452                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 453                                         .stats->multicast*1234);
 454                         retval = 0;
 455                 }
 456                 break;
 457
 458         case OID_GEN_MULTICAST_FRAMES_XMIT:
 459                 DEBUG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __FUNCTION__);
 460                 if (rndis_per_dev_params [configNr].stats) {
 461                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 462                                         .stats->multicast);
 463                         retval = 0;
 464                 }
 465                 break;
 466
 467         case OID_GEN_BROADCAST_BYTES_XMIT:
 468                 DEBUG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __FUNCTION__);
 469                 if (rndis_per_dev_params [configNr].stats) {
 470                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 471                                         .stats->tx_packets/42*255);
 472                         retval = 0;
 473                 }
 474                 break;
 475
 476         case OID_GEN_BROADCAST_FRAMES_XMIT:
 477                 DEBUG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __FUNCTION__);
 478                 if (rndis_per_dev_params [configNr].stats) {
 479                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 480                                         .stats->tx_packets/42);
 481                         retval = 0;
 482                 }
 483                 break;
 484
 485         case OID_GEN_DIRECTED_BYTES_RCV:
 486                 DEBUG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __FUNCTION__);
 487                 *outbuf = __constant_cpu_to_le32 (0);
 488                 retval = 0;
 489                 break;
 490
 491         case OID_GEN_DIRECTED_FRAMES_RCV:
 492                 DEBUG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __FUNCTION__);
 493                 *outbuf = __constant_cpu_to_le32 (0);
 494                 retval = 0;
 495                 break;
 496
 497         case OID_GEN_MULTICAST_BYTES_RCV:
 498                 DEBUG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __FUNCTION__);
 499                 if (rndis_per_dev_params [configNr].stats) {
 500                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 501                                         .stats->multicast * 1111);
 502                         retval = 0;
 503                 }
 504                 break;
 505
 506         case OID_GEN_MULTICAST_FRAMES_RCV:
 507                 DEBUG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __FUNCTION__);
 508                 if (rndis_per_dev_params [configNr].stats) {
 509                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 510                                         .stats->multicast);
 511                         retval = 0;
 512                 }
 513                 break;
 514
 515         case OID_GEN_BROADCAST_BYTES_RCV:
 516                 DEBUG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __FUNCTION__);
 517                 if (rndis_per_dev_params [configNr].stats) {
 518                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 519                                         .stats->rx_packets/42*255);
 520                         retval = 0;
 521                 }
 522                 break;
 523
 524         case OID_GEN_BROADCAST_FRAMES_RCV:
 525                 DEBUG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __FUNCTION__);
 526                 if (rndis_per_dev_params [configNr].stats) {
 527                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 528                                         .stats->rx_packets/42);
 529                         retval = 0;
 530                 }
 531                 break;
 532
 533         case OID_GEN_RCV_CRC_ERROR:
 534                 DEBUG("%s: OID_GEN_RCV_CRC_ERROR\n", __FUNCTION__);
 535                 if (rndis_per_dev_params [configNr].stats) {
 536                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 537                                         .stats->rx_crc_errors);
 538                         retval = 0;
 539                 }
 540                 break;
 541
 542         case OID_GEN_TRANSMIT_QUEUE_LENGTH:
 543                 DEBUG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __FUNCTION__);
 544                 *outbuf = __constant_cpu_to_le32 (0);
 545                 retval = 0;
 546                 break;
 547 #endif  /* RNDIS_OPTIONAL_STATS */
 548
 549         /* ieee802.3 OIDs (table 4-3) */
 550
 551         /* mandatory */
 552         case OID_802_3_PERMANENT_ADDRESS:
 553                 DEBUG("%s: OID_802_3_PERMANENT_ADDRESS\n", __FUNCTION__);
 554                 if (rndis_per_dev_params [configNr].dev) {
 555                         length = ETH_ALEN;
 556                         memcpy (outbuf,
 557                                 rndis_per_dev_params [configNr].host_mac,
 558                                 length);
 559                         retval = 0;
 560                 }
 561                 break;
 562
 563         /* mandatory */
 564         case OID_802_3_CURRENT_ADDRESS:
 565                 DEBUG("%s: OID_802_3_CURRENT_ADDRESS\n", __FUNCTION__);
 566                 if (rndis_per_dev_params [configNr].dev) {
 567                         length = ETH_ALEN;
 568                         memcpy (outbuf,
 569                                 rndis_per_dev_params [configNr].host_mac,
 570                                 length);
 571                         retval = 0;
 572                 }
 573                 break;
 574
 575         /* mandatory */
 576         case OID_802_3_MULTICAST_LIST:
 577                 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 578                 /* Multicast base address only */
 579                 *outbuf = __constant_cpu_to_le32 (0xE0000000);
 580                 retval = 0;
 581                 break;
 582
 583         /* mandatory */
 584         case OID_802_3_MAXIMUM_LIST_SIZE:
 585                 DEBUG("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __FUNCTION__);
 586                 /* Multicast base address only */
 587                 *outbuf = __constant_cpu_to_le32 (1);
 588                 retval = 0;
 589                 break;
 590
 591         case OID_802_3_MAC_OPTIONS:
 592                 DEBUG("%s: OID_802_3_MAC_OPTIONS\n", __FUNCTION__);
 593                 break;
 594
 595         /* ieee802.3 statistics OIDs (table 4-4) */
 596
 597         /* mandatory */
 598         case OID_802_3_RCV_ERROR_ALIGNMENT:
 599                 DEBUG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __FUNCTION__);
 600                 if (rndis_per_dev_params [configNr].stats) {
 601                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 602                                         .stats->rx_frame_errors);
 603                         retval = 0;
 604                 }
 605                 break;
 606
 607         /* mandatory */
 608         case OID_802_3_XMIT_ONE_COLLISION:
 609                 DEBUG("%s: OID_802_3_XMIT_ONE_COLLISION\n", __FUNCTION__);
 610                 *outbuf = __constant_cpu_to_le32 (0);
 611                 retval = 0;
 612                 break;
 613
 614         /* mandatory */
 615         case OID_802_3_XMIT_MORE_COLLISIONS:
 616                 DEBUG("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __FUNCTION__);
 617                 *outbuf = __constant_cpu_to_le32 (0);
 618                 retval = 0;
 619                 break;
 620
 621 #ifdef  RNDIS_OPTIONAL_STATS
 622         case OID_802_3_XMIT_DEFERRED:
 623                 DEBUG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
 624                 /* TODO */
 625                 break;
 626
 627         case OID_802_3_XMIT_MAX_COLLISIONS:
 628                 DEBUG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
 629                 /* TODO */
 630                 break;
 631
 632         case OID_802_3_RCV_OVERRUN:
 633                 DEBUG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
 634                 /* TODO */
 635                 break;
 636
 637         case OID_802_3_XMIT_UNDERRUN:
 638                 DEBUG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
 639                 /* TODO */
 640                 break;
 641
 642         case OID_802_3_XMIT_HEARTBEAT_FAILURE:
 643                 DEBUG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
 644                 /* TODO */
 645                 break;
 646
 647         case OID_802_3_XMIT_TIMES_CRS_LOST:
 648                 DEBUG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
 649                 /* TODO */
 650                 break;
 651
 652         case OID_802_3_XMIT_LATE_COLLISIONS:
 653                 DEBUG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __FUNCTION__);
 654                 /* TODO */
 655                 break;
 656 #endif  /* RNDIS_OPTIONAL_STATS */
 657
 658 #ifdef  RNDIS_PM
 659         /* power management OIDs (table 4-5) */
 660         case OID_PNP_CAPABILITIES:
 661                 DEBUG("%s: OID_PNP_CAPABILITIES\n", __FUNCTION__);
 662
 663                 /* for now, no wakeup capabilities */
 664                 length = sizeof (struct NDIS_PNP_CAPABILITIES);
 665                 memset(outbuf, 0, length);
 666                 retval = 0;
 667                 break;
 668         case OID_PNP_QUERY_POWER:
 669                 DEBUG("%s: OID_PNP_QUERY_POWER D%d\n", __FUNCTION__,
 670                                 le32_to_cpup((__le32 *) buf) - 1);
 671                 /* only suspend is a real power state, and
 672                  * it can't be entered by OID_PNP_SET_POWER...
 673                  */
 674                 length = 0;
 675                 retval = 0;
 676                 break;
 677 #endif
 678
 679         default:
 680                 printk (KERN_WARNING "%s: query unknown OID 0x%08X\n",
 681                          __FUNCTION__, OID);
 682         }
 683         if (retval < 0)
 684                 length = 0;
 685
 686         resp->InformationBufferLength = cpu_to_le32 (length);
 687         r->length = length + sizeof *resp;
 688         resp->MessageLength = cpu_to_le32 (r->length);
 689         return retval;
 690 }
 691
 692 static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len,
 693                               rndis_resp_t *r)
 694 {
 695         rndis_set_cmplt_type            *resp;
 696         int                             i, retval = -ENOTSUPP;
 697         struct rndis_params             *params;
 698
 699         if (!r)
 700                 return -ENOMEM;
 701         resp = (rndis_set_cmplt_type *) r->buf;
 702         if (!resp)
 703                 return -ENOMEM;
 704
 705         if (buf_len && rndis_debug > 1) {
 706                 DEBUG("set OID %08x value, len %d:\n", OID, buf_len);
 707                 for (i = 0; i < buf_len; i += 16) {
 708                         DEBUG ("%03d: %08x %08x %08x %08x\n", i,
 709                                 le32_to_cpup((__le32 *)&buf[i]),
 710                                 le32_to_cpup((__le32 *)&buf[i + 4]),
 711                                 le32_to_cpup((__le32 *)&buf[i + 8]),
 712                                 le32_to_cpup((__le32 *)&buf[i + 12]));
 713                 }
 714         }
 715
 716         params = &rndis_per_dev_params [configNr];
 717         switch (OID) {
 718         case OID_GEN_CURRENT_PACKET_FILTER:
 719
 720                 /* these NDIS_PACKET_TYPE_* bitflags are shared with
 721                  * cdc_filter; it's not RNDIS-specific
 722                  * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
 723                  *      PROMISCUOUS, DIRECTED,
 724                  *      MULTICAST, ALL_MULTICAST, BROADCAST
 725                  */
 726                 *params->filter = (u16) le32_to_cpup((__le32 *)buf);
 727                 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
 728                         __FUNCTION__, *params->filter);
 729
 730                 /* this call has a significant side effect:  it's
 731                  * what makes the packet flow start and stop, like
 732                  * activating the CDC Ethernet altsetting.
 733                  */
 734 #ifdef  RNDIS_PM
 735 update_linkstate:
 736 #endif
 737                 retval = 0;
 738                 if (*params->filter) {
 739                         params->state = RNDIS_DATA_INITIALIZED;
 740                         netif_carrier_on(params->dev);
 741                         if (netif_running(params->dev))
 742                                 netif_wake_queue (params->dev);
 743                 } else {
 744                         params->state = RNDIS_INITIALIZED;
 745                         netif_carrier_off (params->dev);
 746                         netif_stop_queue (params->dev);
 747                 }
 748                 break;
 749
 750         case OID_802_3_MULTICAST_LIST:
 751                 /* I think we can ignore this */
 752                 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 753                 retval = 0;
 754                 break;
 755 #if 0
 756         case OID_GEN_RNDIS_CONFIG_PARAMETER:
 757                 {
 758                 struct rndis_config_parameter   *param;
 759                 param = (struct rndis_config_parameter *) buf;
 760                 DEBUG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
 761                         __FUNCTION__,
 762                         min(cpu_to_le32(param->ParameterNameLength),80),
 763                         buf + param->ParameterNameOffset);
 764                 retval = 0;
 765                 }
 766                 break;
 767 #endif
 768
 769 #ifdef  RNDIS_PM
 770         case OID_PNP_SET_POWER:
 771                 /* The only real power state is USB suspend, and RNDIS requests
 772                  * can't enter it; this one isn't really about power.  After
 773                  * resuming, Windows forces a reset, and then SET_POWER D0.
 774                  * FIXME ... then things go batty; Windows wedges itself.
 775                  */
 776                 i = le32_to_cpup((__force __le32 *)buf);
 777                 DEBUG("%s: OID_PNP_SET_POWER D%d\n", __FUNCTION__, i - 1);
 778                 switch (i) {
 779                 case NdisDeviceStateD0:
 780                         *params->filter = params->saved_filter;
 781                         goto update_linkstate;
 782                 case NdisDeviceStateD3:
 783                 case NdisDeviceStateD2:
 784                 case NdisDeviceStateD1:
 785                         params->saved_filter = *params->filter;
 786                         retval = 0;
 787                         break;
 788                 }
 789                 break;
 790
 791 #ifdef  RNDIS_WAKEUP
 792         // no wakeup support advertised, so wakeup OIDs always fail:
 793         //  - OID_PNP_ENABLE_WAKE_UP
 794         //  - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN
 795 #endif
 796
 797 #endif  /* RNDIS_PM */
 798
 799         default:
 800                 printk (KERN_WARNING "%s: set unknown OID 0x%08X, size %d\n",
 801                          __FUNCTION__, OID, buf_len);
 802         }
 803
 804         return retval;
 805 }
 806
 807 /*
 808  * Response Functions
 809  */
 810
 811 static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
 812 {
 813         rndis_init_cmplt_type   *resp;
 814         rndis_resp_t            *r;
 815
 816         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 817
 818         r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
 819         if (!r)
 820                 return -ENOMEM;
 821         resp = (rndis_init_cmplt_type *) r->buf;
 822
 823         resp->MessageType = __constant_cpu_to_le32 (
 824                         REMOTE_NDIS_INITIALIZE_CMPLT);
 825         resp->MessageLength = __constant_cpu_to_le32 (52);
 826         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 827         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 828         resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
 829         resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
 830         resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
 831         resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
 832         resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
 833         resp->MaxTransferSize = cpu_to_le32 (
 834                   rndis_per_dev_params [configNr].dev->mtu
 835                 + sizeof (struct ethhdr)
 836                 + sizeof (struct rndis_packet_msg_type)
 837                 + 22);
 838         resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
 839         resp->AFListOffset = __constant_cpu_to_le32 (0);
 840         resp->AFListSize = __constant_cpu_to_le32 (0);
 841
 842         if (rndis_per_dev_params [configNr].ack)
 843             rndis_per_dev_params [configNr].ack (
 844                         rndis_per_dev_params [configNr].dev);
 845
 846         return 0;
 847 }
 848
 849 static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
 850 {
 851         rndis_query_cmplt_type *resp;
 852         rndis_resp_t            *r;
 853
 854         // DEBUG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
 855         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 856
 857         /*
 858          * we need more memory:
 859          * oid_supported_list is the largest answer
 860          */
 861         r = rndis_add_response (configNr, sizeof (oid_supported_list));
 862         if (!r)
 863                 return -ENOMEM;
 864         resp = (rndis_query_cmplt_type *) r->buf;
 865
 866         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
 867         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 868
 869         if (gen_ndis_query_resp (configNr, le32_to_cpu (buf->OID),
 870                         le32_to_cpu(buf->InformationBufferOffset)
 871                                         + 8 + (u8 *) buf,
 872                         le32_to_cpu(buf->InformationBufferLength),
 873                         r)) {
 874                 /* OID not supported */
 875                 resp->Status = __constant_cpu_to_le32 (
 876                                 RNDIS_STATUS_NOT_SUPPORTED);
 877                 resp->MessageLength = __constant_cpu_to_le32 (sizeof *resp);
 878                 resp->InformationBufferLength = __constant_cpu_to_le32 (0);
 879                 resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
 880         } else
 881                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 882
 883         if (rndis_per_dev_params [configNr].ack)
 884             rndis_per_dev_params [configNr].ack (
 885                         rndis_per_dev_params [configNr].dev);
 886         return 0;
 887 }
 888
 889 static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
 890 {
 891         u32                     BufLength, BufOffset;
 892         rndis_set_cmplt_type    *resp;
 893         rndis_resp_t            *r;
 894
 895         r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
 896         if (!r)
 897                 return -ENOMEM;
 898         resp = (rndis_set_cmplt_type *) r->buf;
 899
 900         BufLength = le32_to_cpu (buf->InformationBufferLength);
 901         BufOffset = le32_to_cpu (buf->InformationBufferOffset);
 902
 903 #ifdef  VERBOSE
 904         DEBUG("%s: Length: %d\n", __FUNCTION__, BufLength);
 905         DEBUG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
 906         DEBUG("%s: InfoBuffer: ", __FUNCTION__);
 907
 908         for (i = 0; i < BufLength; i++) {
 909                 DEBUG ("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
 910         }
 911
 912         DEBUG ("\n");
 913 #endif
 914
 915         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
 916         resp->MessageLength = __constant_cpu_to_le32 (16);
 917         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 918         if (gen_ndis_set_resp (configNr, le32_to_cpu (buf->OID),
 919                                ((u8 *) buf) + 8 + BufOffset, BufLength, r))
 920             resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
 921         else resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 922
 923         if (rndis_per_dev_params [configNr].ack)
 924             rndis_per_dev_params [configNr].ack (
 925                         rndis_per_dev_params [configNr].dev);
 926
 927         return 0;
 928 }
 929
 930 static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
 931 {
 932         rndis_reset_cmplt_type  *resp;
 933         rndis_resp_t            *r;
 934
 935         r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type));
 936         if (!r)
 937                 return -ENOMEM;
 938         resp = (rndis_reset_cmplt_type *) r->buf;
 939
 940         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
 941         resp->MessageLength = __constant_cpu_to_le32 (16);
 942         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 943         /* resent information */
 944         resp->AddressingReset = __constant_cpu_to_le32 (1);
 945
 946         if (rndis_per_dev_params [configNr].ack)
 947             rndis_per_dev_params [configNr].ack (
 948                         rndis_per_dev_params [configNr].dev);
 949
 950         return 0;
 951 }
 952
 953 static int rndis_keepalive_response (int configNr,
 954                                      rndis_keepalive_msg_type *buf)
 955 {
 956         rndis_keepalive_cmplt_type      *resp;
 957         rndis_resp_t                    *r;
 958
 959         /* host "should" check only in RNDIS_DATA_INITIALIZED state */
 960
 961         r = rndis_add_response (configNr, sizeof (rndis_keepalive_cmplt_type));
 962         if (!r)
 963                 return -ENOMEM;
 964         resp = (rndis_keepalive_cmplt_type *) r->buf;
 965
 966         resp->MessageType = __constant_cpu_to_le32 (
 967                         REMOTE_NDIS_KEEPALIVE_CMPLT);
 968         resp->MessageLength = __constant_cpu_to_le32 (16);
 969         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 970         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 971
 972         if (rndis_per_dev_params [configNr].ack)
 973             rndis_per_dev_params [configNr].ack (
 974                         rndis_per_dev_params [configNr].dev);
 975
 976         return 0;
 977 }
 978
 979
 980 /*
 981  * Device to Host Comunication
 982  */
 983 static int rndis_indicate_status_msg (int configNr, u32 status)
 984 {
 985         rndis_indicate_status_msg_type  *resp;
 986         rndis_resp_t                    *r;
 987
 988         if (rndis_per_dev_params [configNr].state == RNDIS_UNINITIALIZED)
 989             return -ENOTSUPP;
 990
 991         r = rndis_add_response (configNr,
 992                                 sizeof (rndis_indicate_status_msg_type));
 993         if (!r)
 994                 return -ENOMEM;
 995         resp = (rndis_indicate_status_msg_type *) r->buf;
 996
 997         resp->MessageType = __constant_cpu_to_le32 (
 998                         REMOTE_NDIS_INDICATE_STATUS_MSG);
 999         resp->MessageLength = __constant_cpu_to_le32 (20);
1000         resp->Status = cpu_to_le32 (status);
1001         resp->StatusBufferLength = __constant_cpu_to_le32 (0);
1002         resp->StatusBufferOffset = __constant_cpu_to_le32 (0);
1003
1004         if (rndis_per_dev_params [configNr].ack)
1005             rndis_per_dev_params [configNr].ack (
1006                         rndis_per_dev_params [configNr].dev);
1007         return 0;
1008 }
1009
1010 int rndis_signal_connect (int configNr)
1011 {
1012         rndis_per_dev_params [configNr].media_state
1013                         = NDIS_MEDIA_STATE_CONNECTED;
1014         return rndis_indicate_status_msg (configNr,
1015                                           RNDIS_STATUS_MEDIA_CONNECT);
1016 }
1017
1018 int rndis_signal_disconnect (int configNr)
1019 {
1020         rndis_per_dev_params [configNr].media_state
1021                         = NDIS_MEDIA_STATE_DISCONNECTED;
1022         return rndis_indicate_status_msg (configNr,
1023                                           RNDIS_STATUS_MEDIA_DISCONNECT);
1024 }
1025
1026 void rndis_uninit (int configNr)
1027 {
1028         u8 *buf;
1029         u32 length;
1030
1031         if (configNr >= RNDIS_MAX_CONFIGS)
1032                 return;
1033         rndis_per_dev_params [configNr].used = 0;
1034         rndis_per_dev_params [configNr].state = RNDIS_UNINITIALIZED;
1035
1036         /* drain the response queue */
1037         while ((buf = rndis_get_next_response(configNr, &length)))
1038                 rndis_free_response(configNr, buf);
1039 }
1040
1041 void rndis_set_host_mac (int configNr, const u8 *addr)
1042 {
1043         rndis_per_dev_params [configNr].host_mac = addr;
1044 }
1045
1046 /*
1047  * Message Parser
1048  */
1049 int rndis_msg_parser (u8 configNr, u8 *buf)
1050 {
1051         u32 MsgType, MsgLength;
1052         __le32 *tmp;
1053         struct rndis_params             *params;
1054
1055         if (!buf)
1056                 return -ENOMEM;
1057
1058         tmp = (__le32 *) buf;
1059         MsgType   = le32_to_cpup(tmp++);
1060         MsgLength = le32_to_cpup(tmp++);
1061
1062         if (configNr >= RNDIS_MAX_CONFIGS)
1063                 return -ENOTSUPP;
1064         params = &rndis_per_dev_params [configNr];
1065
1066         /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
1067          * rx/tx statistics and link status, in addition to KEEPALIVE traffic
1068          * and normal HC level polling to see if there's any IN traffic.
1069          */
1070
1071         /* For USB: responses may take up to 10 seconds */
1072         switch (MsgType) {
1073         case REMOTE_NDIS_INITIALIZE_MSG:
1074                 DEBUG("%s: REMOTE_NDIS_INITIALIZE_MSG\n",
1075                         __FUNCTION__ );
1076                 params->state = RNDIS_INITIALIZED;
1077                 return  rndis_init_response (configNr,
1078                                              (rndis_init_msg_type *) buf);
1079
1080         case REMOTE_NDIS_HALT_MSG:
1081                 DEBUG("%s: REMOTE_NDIS_HALT_MSG\n",
1082                         __FUNCTION__ );
1083                 params->state = RNDIS_UNINITIALIZED;
1084                 if (params->dev) {
1085                         netif_carrier_off (params->dev);
1086                         netif_stop_queue (params->dev);
1087                 }
1088                 return 0;
1089
1090         case REMOTE_NDIS_QUERY_MSG:
1091                 return rndis_query_response (configNr,
1092                                              (rndis_query_msg_type *) buf);
1093
1094         case REMOTE_NDIS_SET_MSG:
1095                 return rndis_set_response (configNr,
1096                                            (rndis_set_msg_type *) buf);
1097
1098         case REMOTE_NDIS_RESET_MSG:
1099                 DEBUG("%s: REMOTE_NDIS_RESET_MSG\n",
1100                         __FUNCTION__ );
1101                 return rndis_reset_response (configNr,
1102                                              (rndis_reset_msg_type *) buf);
1103
1104         case REMOTE_NDIS_KEEPALIVE_MSG:
1105                 /* For USB: host does this every 5 seconds */
1106                 if (rndis_debug > 1)
1107                         DEBUG("%s: REMOTE_NDIS_KEEPALIVE_MSG\n",
1108                                 __FUNCTION__ );
1109                 return rndis_keepalive_response (configNr,
1110                                                  (rndis_keepalive_msg_type *)
1111                                                  buf);
1112
1113         default:
1114                 /* At least Windows XP emits some undefined RNDIS messages.
1115                  * In one case those messages seemed to relate to the host
1116                  * suspending itself.
1117                  */
1118                 printk (KERN_WARNING
1119                         "%s: unknown RNDIS message 0x%08X len %d\n",
1120                         __FUNCTION__ , MsgType, MsgLength);
1121                 {
1122                         unsigned i;
1123                         for (i = 0; i < MsgLength; i += 16) {
1124                                 DEBUG ("%03d: "
1125                                         " %02x %02x %02x %02x"
1126                                         " %02x %02x %02x %02x"
1127                                         " %02x %02x %02x %02x"
1128                                         " %02x %02x %02x %02x"
1129                                         "\n",
1130                                         i,
1131                                         buf[i], buf [i+1],
1132                                                 buf[i+2], buf[i+3],
1133                                         buf[i+4], buf [i+5],
1134                                                 buf[i+6], buf[i+7],
1135                                         buf[i+8], buf [i+9],
1136                                                 buf[i+10], buf[i+11],
1137                                         buf[i+12], buf [i+13],
1138                                                 buf[i+14], buf[i+15]);
1139                         }
1140                 }
1141                 break;
1142         }
1143
1144         return -ENOTSUPP;
1145 }
1146
1147 int rndis_register (int (* rndis_control_ack) (struct net_device *))
1148 {
1149         u8 i;
1150
1151         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1152                 if (!rndis_per_dev_params [i].used) {
1153                         rndis_per_dev_params [i].used = 1;
1154                         rndis_per_dev_params [i].ack = rndis_control_ack;
1155                         DEBUG("%s: configNr = %d\n", __FUNCTION__, i);
1156                         return i;
1157                 }
1158         }
1159         DEBUG("failed\n");
1160
1161         return -1;
1162 }
1163
1164 void rndis_deregister (int configNr)
1165 {
1166         DEBUG("%s: \n", __FUNCTION__ );
1167
1168         if (configNr >= RNDIS_MAX_CONFIGS) return;
1169         rndis_per_dev_params [configNr].used = 0;
1170
1171         return;
1172 }
1173
1174 int rndis_set_param_dev (u8 configNr, struct net_device *dev,
1175                          struct net_device_stats *stats,
1176                          u16 *cdc_filter)
1177 {
1178         DEBUG("%s:\n", __FUNCTION__ );
1179         if (!dev || !stats) return -1;
1180         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1181
1182         rndis_per_dev_params [configNr].dev = dev;
1183         rndis_per_dev_params [configNr].stats = stats;
1184         rndis_per_dev_params [configNr].filter = cdc_filter;
1185
1186         return 0;
1187 }
1188
1189 int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr)
1190 {
1191         DEBUG("%s:\n", __FUNCTION__ );
1192         if (!vendorDescr) return -1;
1193         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1194
1195         rndis_per_dev_params [configNr].vendorID = vendorID;
1196         rndis_per_dev_params [configNr].vendorDescr = vendorDescr;
1197
1198         return 0;
1199 }
1200
1201 int rndis_set_param_medium (u8 configNr, u32 medium, u32 speed)
1202 {
1203         DEBUG("%s: %u %u\n", __FUNCTION__, medium, speed);
1204         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1205
1206         rndis_per_dev_params [configNr].medium = medium;
1207         rndis_per_dev_params [configNr].speed = speed;
1208
1209         return 0;
1210 }
1211
1212 void rndis_add_hdr (struct sk_buff *skb)
1213 {
1214         struct rndis_packet_msg_type    *header;
1215
1216         if (!skb)
1217                 return;
1218         header = (void *) skb_push (skb, sizeof *header);
1219         memset (header, 0, sizeof *header);
1220         header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
1221         header->MessageLength = cpu_to_le32(skb->len);
1222         header->DataOffset = __constant_cpu_to_le32 (36);
1223         header->DataLength = cpu_to_le32(skb->len - sizeof *header);
1224 }
1225
1226 void rndis_free_response (int configNr, u8 *buf)
1227 {
1228         rndis_resp_t            *r;
1229         struct list_head        *act, *tmp;
1230
1231         list_for_each_safe (act, tmp,
1232                             &(rndis_per_dev_params [configNr].resp_queue))
1233         {
1234                 r = list_entry (act, rndis_resp_t, list);
1235                 if (r && r->buf == buf) {
1236                         list_del (&r->list);
1237                         kfree (r);
1238                 }
1239         }
1240 }
1241
1242 u8 *rndis_get_next_response (int configNr, u32 *length)
1243 {
1244         rndis_resp_t            *r;
1245         struct list_head        *act, *tmp;
1246
1247         if (!length) return NULL;
1248
1249         list_for_each_safe (act, tmp,
1250                             &(rndis_per_dev_params [configNr].resp_queue))
1251         {
1252                 r = list_entry (act, rndis_resp_t, list);
1253                 if (!r->send) {
1254                         r->send = 1;
1255                         *length = r->length;
1256                         return r->buf;
1257                 }
1258         }
1259
1260         return NULL;
1261 }
1262
1263 static rndis_resp_t *rndis_add_response (int configNr, u32 length)
1264 {
1265         rndis_resp_t    *r;
1266
1267         /* NOTE:  this gets copied into ether.c USB_BUFSIZ bytes ... */
1268         r = kmalloc (sizeof (rndis_resp_t) + length, GFP_ATOMIC);
1269         if (!r) return NULL;
1270
1271         r->buf = (u8 *) (r + 1);
1272         r->length = length;
1273         r->send = 0;
1274
1275         list_add_tail (&r->list,
1276                        &(rndis_per_dev_params [configNr].resp_queue));
1277         return r;
1278 }
1279
1280 int rndis_rm_hdr(struct sk_buff *skb)
1281 {
1282         /* tmp points to a struct rndis_packet_msg_type */
1283         __le32          *tmp = (void *) skb->data;
1284
1285         /* MessageType, MessageLength */
1286         if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
1287                         != get_unaligned(tmp++))
1288                 return -EINVAL;
1289         tmp++;
1290
1291         /* DataOffset, DataLength */
1292         if (!skb_pull(skb, le32_to_cpu(get_unaligned(tmp++))
1293                         + 8 /* offset of DataOffset */))
1294                 return -EOVERFLOW;
1295         skb_trim(skb, le32_to_cpu(get_unaligned(tmp++)));
1296
1297         return 0;
1298 }
1299
1300 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1301
1302 static int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof,
1303                      void *data)
1304 {
1305         char *out = page;
1306         int len;
1307         rndis_params *param = (rndis_params *) data;
1308
1309         out += snprintf (out, count,
1310                          "Config Nr. %d\n"
1311                          "used      : %s\n"
1312                          "state     : %s\n"
1313                          "medium    : 0x%08X\n"
1314                          "speed     : %d\n"
1315                          "cable     : %s\n"
1316                          "vendor ID : 0x%08X\n"
1317                          "vendor    : %s\n",
1318                          param->confignr, (param->used) ? "y" : "n",
1319                          ({ char *s = "?";
1320                          switch (param->state) {
1321                          case RNDIS_UNINITIALIZED:
1322                                 s = "RNDIS_UNINITIALIZED"; break;
1323                          case RNDIS_INITIALIZED:
1324                                 s = "RNDIS_INITIALIZED"; break;
1325                          case RNDIS_DATA_INITIALIZED:
1326                                 s = "RNDIS_DATA_INITIALIZED"; break;
1327                         }; s; }),
1328                          param->medium,
1329                          (param->media_state) ? 0 : param->speed*100,
1330                          (param->media_state) ? "disconnected" : "connected",
1331                          param->vendorID, param->vendorDescr);
1332
1333         len = out - page;
1334         len -= off;
1335
1336         if (len < count) {
1337                 *eof = 1;
1338                 if (len <= 0)
1339                         return 0;
1340         } else
1341                 len = count;
1342
1343         *start = page + off;
1344         return len;
1345 }
1346
1347 static int rndis_proc_write (struct file *file, const char __user *buffer,
1348                       unsigned long count, void *data)
1349 {
1350         rndis_params *p = data;
1351         u32 speed = 0;
1352         int i, fl_speed = 0;
1353
1354         for (i = 0; i < count; i++) {
1355                 char c;
1356                 if (get_user(c, buffer))
1357                         return -EFAULT;
1358                 switch (c) {
1359                 case '0':
1360                 case '1':
1361                 case '2':
1362                 case '3':
1363                 case '4':
1364                 case '5':
1365                 case '6':
1366                 case '7':
1367                 case '8':
1368                 case '9':
1369                         fl_speed = 1;
1370                         speed = speed*10 + c - '0';
1371                         break;
1372                 case 'C':
1373                 case 'c':
1374                         rndis_signal_connect (p->confignr);
1375                         break;
1376                 case 'D':
1377                 case 'd':
1378                         rndis_signal_disconnect(p->confignr);
1379                         break;
1380                 default:
1381                         if (fl_speed) p->speed = speed;
1382                         else DEBUG ("%c is not valid\n", c);
1383                         break;
1384                 }
1385
1386                 buffer++;
1387         }
1388
1389         return count;
1390 }
1391
1392 #define NAME_TEMPLATE   "driver/rndis-%03d"
1393
1394 static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
1395
1396 #endif  /* CONFIG_USB_GADGET_DEBUG_FILES */
1397
1398
1399 int __init rndis_init (void)
1400 {
1401         u8 i;
1402
1403         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1404 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1405                 char name [20];
1406
1407                 sprintf (name, NAME_TEMPLATE, i);
1408                 if (!(rndis_connect_state [i]
1409                                 = create_proc_entry (name, 0660, NULL)))
1410                 {
1411                         DEBUG ("%s :remove entries", __FUNCTION__);
1412                         while (i) {
1413                                 sprintf (name, NAME_TEMPLATE, --i);
1414                                 remove_proc_entry (name, NULL);
1415                         }
1416                         DEBUG ("\n");
1417                         return -EIO;
1418                 }
1419
1420                 rndis_connect_state [i]->nlink = 1;
1421                 rndis_connect_state [i]->write_proc = rndis_proc_write;
1422                 rndis_connect_state [i]->read_proc = rndis_proc_read;
1423                 rndis_connect_state [i]->data = (void *)
1424                                 (rndis_per_dev_params + i);
1425 #endif
1426                 rndis_per_dev_params [i].confignr = i;
1427                 rndis_per_dev_params [i].used = 0;
1428                 rndis_per_dev_params [i].state = RNDIS_UNINITIALIZED;
1429                 rndis_per_dev_params [i].media_state
1430                                 = NDIS_MEDIA_STATE_DISCONNECTED;
1431                 INIT_LIST_HEAD (&(rndis_per_dev_params [i].resp_queue));
1432         }
1433
1434         return 0;
1435 }
1436
1437 void rndis_exit (void)
1438 {
1439 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1440         u8 i;
1441         char name [20];
1442
1443         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1444                 sprintf (name, NAME_TEMPLATE, i);
1445                 remove_proc_entry (name, NULL);
1446         }
1447 #endif
1448 }
1449