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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/init.h>
  32 #include <linux/list.h>
  33 #include <linux/proc_fs.h>
  34 #include <linux/netdevice.h>
  35
  36 #include <asm/io.h>
  37 #include <asm/byteorder.h>
  38 #include <asm/system.h>
  39 #include <asm/unaligned.h>
  40
  41
  42 #undef  RNDIS_PM
  43 #undef  RNDIS_WAKEUP
  44 #undef  VERBOSE
  45
  46 #include "rndis.h"
  47
  48
  49 /* The driver for your USB chip needs to support ep0 OUT to work with
  50  * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
  51  *
  52  * Windows hosts need an INF file like Documentation/usb/linux.inf
  53  * and will be happier if you provide the host_addr module parameter.
  54  */
  55
  56 #if 0
  57 #define DEBUG(str,args...) do { \
  58         if (rndis_debug) \
  59                 printk(KERN_DEBUG str , ## args ); \
  60         } while (0)
  61 static int rndis_debug = 0;
  62
  63 module_param (rndis_debug, int, 0);
  64 MODULE_PARM_DESC (rndis_debug, "enable debugging");
  65
  66 #else
  67
  68 #define rndis_debug             0
  69 #define DEBUG(str,args...)      do{}while(0)
  70 #endif
  71
  72 #define RNDIS_MAX_CONFIGS       1
  73
  74
  75 static rndis_params rndis_per_dev_params [RNDIS_MAX_CONFIGS];
  76
  77 /* Driver Version */
  78 static const __le32 rndis_driver_version = __constant_cpu_to_le32 (1);
  79
  80 /* Function Prototypes */
  81 static rndis_resp_t *rndis_add_response (int configNr, u32 length);
  82
  83
  84 /* supported OIDs */
  85 static const u32 oid_supported_list [] =
  86 {
  87         /* the general stuff */
  88         OID_GEN_SUPPORTED_LIST,
  89         OID_GEN_HARDWARE_STATUS,
  90         OID_GEN_MEDIA_SUPPORTED,
  91         OID_GEN_MEDIA_IN_USE,
  92         OID_GEN_MAXIMUM_FRAME_SIZE,
  93         OID_GEN_LINK_SPEED,
  94         OID_GEN_TRANSMIT_BLOCK_SIZE,
  95         OID_GEN_RECEIVE_BLOCK_SIZE,
  96         OID_GEN_VENDOR_ID,
  97         OID_GEN_VENDOR_DESCRIPTION,
  98         OID_GEN_VENDOR_DRIVER_VERSION,
  99         OID_GEN_CURRENT_PACKET_FILTER,
 100         OID_GEN_MAXIMUM_TOTAL_SIZE,
 101         OID_GEN_MEDIA_CONNECT_STATUS,
 102         OID_GEN_PHYSICAL_MEDIUM,
 103 #if 0
 104         OID_GEN_RNDIS_CONFIG_PARAMETER,
 105 #endif
 106
 107         /* the statistical stuff */
 108         OID_GEN_XMIT_OK,
 109         OID_GEN_RCV_OK,
 110         OID_GEN_XMIT_ERROR,
 111         OID_GEN_RCV_ERROR,
 112         OID_GEN_RCV_NO_BUFFER,
 113 #ifdef  RNDIS_OPTIONAL_STATS
 114         OID_GEN_DIRECTED_BYTES_XMIT,
 115         OID_GEN_DIRECTED_FRAMES_XMIT,
 116         OID_GEN_MULTICAST_BYTES_XMIT,
 117         OID_GEN_MULTICAST_FRAMES_XMIT,
 118         OID_GEN_BROADCAST_BYTES_XMIT,
 119         OID_GEN_BROADCAST_FRAMES_XMIT,
 120         OID_GEN_DIRECTED_BYTES_RCV,
 121         OID_GEN_DIRECTED_FRAMES_RCV,
 122         OID_GEN_MULTICAST_BYTES_RCV,
 123         OID_GEN_MULTICAST_FRAMES_RCV,
 124         OID_GEN_BROADCAST_BYTES_RCV,
 125         OID_GEN_BROADCAST_FRAMES_RCV,
 126         OID_GEN_RCV_CRC_ERROR,
 127         OID_GEN_TRANSMIT_QUEUE_LENGTH,
 128 #endif  /* RNDIS_OPTIONAL_STATS */
 129
 130         /* mandatory 802.3 */
 131         /* the general stuff */
 132         OID_802_3_PERMANENT_ADDRESS,
 133         OID_802_3_CURRENT_ADDRESS,
 134         OID_802_3_MULTICAST_LIST,
 135         OID_802_3_MAC_OPTIONS,
 136         OID_802_3_MAXIMUM_LIST_SIZE,
 137
 138         /* the statistical stuff */
 139         OID_802_3_RCV_ERROR_ALIGNMENT,
 140         OID_802_3_XMIT_ONE_COLLISION,
 141         OID_802_3_XMIT_MORE_COLLISIONS,
 142 #ifdef  RNDIS_OPTIONAL_STATS
 143         OID_802_3_XMIT_DEFERRED,
 144         OID_802_3_XMIT_MAX_COLLISIONS,
 145         OID_802_3_RCV_OVERRUN,
 146         OID_802_3_XMIT_UNDERRUN,
 147         OID_802_3_XMIT_HEARTBEAT_FAILURE,
 148         OID_802_3_XMIT_TIMES_CRS_LOST,
 149         OID_802_3_XMIT_LATE_COLLISIONS,
 150 #endif  /* RNDIS_OPTIONAL_STATS */
 151
 152 #ifdef  RNDIS_PM
 153         /* PM and wakeup are mandatory for USB: */
 154
 155         /* power management */
 156         OID_PNP_CAPABILITIES,
 157         OID_PNP_QUERY_POWER,
 158         OID_PNP_SET_POWER,
 159
 160 #ifdef  RNDIS_WAKEUP
 161         /* wake up host */
 162         OID_PNP_ENABLE_WAKE_UP,
 163         OID_PNP_ADD_WAKE_UP_PATTERN,
 164         OID_PNP_REMOVE_WAKE_UP_PATTERN,
 165 #endif  /* RNDIS_WAKEUP */
 166 #endif  /* RNDIS_PM */
 167 };
 168
 169
 170 /* NDIS Functions */
 171 static int
 172 gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
 173                 rndis_resp_t *r)
 174 {
 175         int                     retval = -ENOTSUPP;
 176         u32                     length = 4;     /* usually */
 177         __le32                  *outbuf;
 178         int                     i, count;
 179         rndis_query_cmplt_type  *resp;
 180
 181         if (!r) return -ENOMEM;
 182         resp = (rndis_query_cmplt_type *) r->buf;
 183
 184         if (!resp) return -ENOMEM;
 185
 186         if (buf_len && rndis_debug > 1) {
 187                 DEBUG("query OID %08x value, len %d:\n", OID, buf_len);
 188                 for (i = 0; i < buf_len; i += 16) {
 189                         DEBUG ("%03d: %08x %08x %08x %08x\n", i,
 190                                 le32_to_cpup((__le32 *)&buf[i]),
 191                                 le32_to_cpup((__le32 *)&buf[i + 4]),
 192                                 le32_to_cpup((__le32 *)&buf[i + 8]),
 193                                 le32_to_cpup((__le32 *)&buf[i + 12]));
 194                 }
 195         }
 196
 197         /* response goes here, right after the header */
 198         outbuf = (__le32 *) &resp[1];
 199         resp->InformationBufferOffset = __constant_cpu_to_le32 (16);
 200
 201         switch (OID) {
 202
 203         /* general oids (table 4-1) */
 204
 205         /* mandatory */
 206         case OID_GEN_SUPPORTED_LIST:
 207                 DEBUG ("%s: OID_GEN_SUPPORTED_LIST\n", __FUNCTION__);
 208                 length = sizeof (oid_supported_list);
 209                 count  = length / sizeof (u32);
 210                 for (i = 0; i < count; i++)
 211                         outbuf[i] = cpu_to_le32 (oid_supported_list[i]);
 212                 retval = 0;
 213                 break;
 214
 215         /* mandatory */
 216         case OID_GEN_HARDWARE_STATUS:
 217                 DEBUG("%s: OID_GEN_HARDWARE_STATUS\n", __FUNCTION__);
 218                 /* Bogus question!
 219                  * Hardware must be ready to receive high level protocols.
 220                  * BTW:
 221                  * reddite ergo quae sunt Caesaris Caesari
 222                  * et quae sunt Dei Deo!
 223                  */
 224                 *outbuf = __constant_cpu_to_le32 (0);
 225                 retval = 0;
 226                 break;
 227
 228         /* mandatory */
 229         case OID_GEN_MEDIA_SUPPORTED:
 230                 DEBUG("%s: OID_GEN_MEDIA_SUPPORTED\n", __FUNCTION__);
 231                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
 232                 retval = 0;
 233                 break;
 234
 235         /* mandatory */
 236         case OID_GEN_MEDIA_IN_USE:
 237                 DEBUG("%s: OID_GEN_MEDIA_IN_USE\n", __FUNCTION__);
 238                 /* one medium, one transport... (maybe you do it better) */
 239                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
 240                 retval = 0;
 241                 break;
 242
 243         /* mandatory */
 244         case OID_GEN_MAXIMUM_FRAME_SIZE:
 245                 DEBUG("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __FUNCTION__);
 246                 if (rndis_per_dev_params [configNr].dev) {
 247                         *outbuf = cpu_to_le32 (
 248                                 rndis_per_dev_params [configNr].dev->mtu);
 249                         retval = 0;
 250                 }
 251                 break;
 252
 253         /* mandatory */
 254         case OID_GEN_LINK_SPEED:
 255                 if (rndis_debug > 1)
 256                         DEBUG("%s: OID_GEN_LINK_SPEED\n", __FUNCTION__);
 257                 if (rndis_per_dev_params [configNr].media_state
 258                                 == NDIS_MEDIA_STATE_DISCONNECTED)
 259                         *outbuf = __constant_cpu_to_le32 (0);
 260                 else
 261                         *outbuf = cpu_to_le32 (
 262                                 rndis_per_dev_params [configNr].speed);
 263                 retval = 0;
 264                 break;
 265
 266         /* mandatory */
 267         case OID_GEN_TRANSMIT_BLOCK_SIZE:
 268                 DEBUG("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __FUNCTION__);
 269                 if (rndis_per_dev_params [configNr].dev) {
 270                         *outbuf = cpu_to_le32 (
 271                                 rndis_per_dev_params [configNr].dev->mtu);
 272                         retval = 0;
 273                 }
 274                 break;
 275
 276         /* mandatory */
 277         case OID_GEN_RECEIVE_BLOCK_SIZE:
 278                 DEBUG("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __FUNCTION__);
 279                 if (rndis_per_dev_params [configNr].dev) {
 280                         *outbuf = cpu_to_le32 (
 281                                 rndis_per_dev_params [configNr].dev->mtu);
 282                         retval = 0;
 283                 }
 284                 break;
 285
 286         /* mandatory */
 287         case OID_GEN_VENDOR_ID:
 288                 DEBUG("%s: OID_GEN_VENDOR_ID\n", __FUNCTION__);
 289                 *outbuf = cpu_to_le32 (
 290                         rndis_per_dev_params [configNr].vendorID);
 291                 retval = 0;
 292                 break;
 293
 294         /* mandatory */
 295         case OID_GEN_VENDOR_DESCRIPTION:
 296                 DEBUG("%s: OID_GEN_VENDOR_DESCRIPTION\n", __FUNCTION__);
 297                 length = strlen (rndis_per_dev_params [configNr].vendorDescr);
 298                 memcpy (outbuf,
 299                         rndis_per_dev_params [configNr].vendorDescr, length);
 300                 retval = 0;
 301                 break;
 302
 303         case OID_GEN_VENDOR_DRIVER_VERSION:
 304                 DEBUG("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __FUNCTION__);
 305                 /* Created as LE */
 306                 *outbuf = rndis_driver_version;
 307                 retval = 0;
 308                 break;
 309
 310         /* mandatory */
 311         case OID_GEN_CURRENT_PACKET_FILTER:
 312                 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __FUNCTION__);
 313                 *outbuf = cpu_to_le32 (*rndis_per_dev_params[configNr].filter);
 314                 retval = 0;
 315                 break;
 316
 317         /* mandatory */
 318         case OID_GEN_MAXIMUM_TOTAL_SIZE:
 319                 DEBUG("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __FUNCTION__);
 320                 *outbuf = __constant_cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
 321                 retval = 0;
 322                 break;
 323
 324         /* mandatory */
 325         case OID_GEN_MEDIA_CONNECT_STATUS:
 326                 if (rndis_debug > 1)
 327                         DEBUG("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __FUNCTION__);
 328                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 329                                                 .media_state);
 330                 retval = 0;
 331                 break;
 332
 333         case OID_GEN_PHYSICAL_MEDIUM:
 334                 DEBUG("%s: OID_GEN_PHYSICAL_MEDIUM\n", __FUNCTION__);
 335                 *outbuf = __constant_cpu_to_le32 (0);
 336                 retval = 0;
 337                 break;
 338
 339         /* The RNDIS specification is incomplete/wrong.   Some versions
 340          * of MS-Windows expect OIDs that aren't specified there.  Other
 341          * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
 342          */
 343         case OID_GEN_MAC_OPTIONS:               /* from WinME */
 344                 DEBUG("%s: OID_GEN_MAC_OPTIONS\n", __FUNCTION__);
 345                 *outbuf = __constant_cpu_to_le32(
 346                           NDIS_MAC_OPTION_RECEIVE_SERIALIZED
 347                         | NDIS_MAC_OPTION_FULL_DUPLEX);
 348                 retval = 0;
 349                 break;
 350
 351         /* statistics OIDs (table 4-2) */
 352
 353         /* mandatory */
 354         case OID_GEN_XMIT_OK:
 355                 if (rndis_debug > 1)
 356                         DEBUG("%s: OID_GEN_XMIT_OK\n", __FUNCTION__);
 357                 if (rndis_per_dev_params [configNr].stats) {
 358                         *outbuf = cpu_to_le32 (
 359                             rndis_per_dev_params [configNr].stats->tx_packets -
 360                             rndis_per_dev_params [configNr].stats->tx_errors -
 361                             rndis_per_dev_params [configNr].stats->tx_dropped);
 362                         retval = 0;
 363                 }
 364                 break;
 365
 366         /* mandatory */
 367         case OID_GEN_RCV_OK:
 368                 if (rndis_debug > 1)
 369                         DEBUG("%s: OID_GEN_RCV_OK\n", __FUNCTION__);
 370                 if (rndis_per_dev_params [configNr].stats) {
 371                         *outbuf = cpu_to_le32 (
 372                             rndis_per_dev_params [configNr].stats->rx_packets -
 373                             rndis_per_dev_params [configNr].stats->rx_errors -
 374                             rndis_per_dev_params [configNr].stats->rx_dropped);
 375                         retval = 0;
 376                 }
 377                 break;
 378
 379         /* mandatory */
 380         case OID_GEN_XMIT_ERROR:
 381                 if (rndis_debug > 1)
 382                         DEBUG("%s: OID_GEN_XMIT_ERROR\n", __FUNCTION__);
 383                 if (rndis_per_dev_params [configNr].stats) {
 384                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 385                                         .stats->tx_errors);
 386                         retval = 0;
 387                 }
 388                 break;
 389
 390         /* mandatory */
 391         case OID_GEN_RCV_ERROR:
 392                 if (rndis_debug > 1)
 393                         DEBUG("%s: OID_GEN_RCV_ERROR\n", __FUNCTION__);
 394                 if (rndis_per_dev_params [configNr].stats) {
 395                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 396                                         .stats->rx_errors);
 397                         retval = 0;
 398                 }
 399                 break;
 400
 401         /* mandatory */
 402         case OID_GEN_RCV_NO_BUFFER:
 403                 DEBUG("%s: OID_GEN_RCV_NO_BUFFER\n", __FUNCTION__);
 404                 if (rndis_per_dev_params [configNr].stats) {
 405                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 406                                         .stats->rx_dropped);
 407                         retval = 0;
 408                 }
 409                 break;
 410
 411 #ifdef  RNDIS_OPTIONAL_STATS
 412         case OID_GEN_DIRECTED_BYTES_XMIT:
 413                 DEBUG("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __FUNCTION__);
 414                 /*
 415                  * Aunt Tilly's size of shoes
 416                  * minus antarctica count of penguins
 417                  * divided by weight of Alpha Centauri
 418                  */
 419                 if (rndis_per_dev_params [configNr].stats) {
 420                         *outbuf = cpu_to_le32 (
 421                                 (rndis_per_dev_params [configNr]
 422                                         .stats->tx_packets -
 423                                  rndis_per_dev_params [configNr]
 424                                          .stats->tx_errors -
 425                                  rndis_per_dev_params [configNr]
 426                                          .stats->tx_dropped)
 427                                 * 123);
 428                         retval = 0;
 429                 }
 430                 break;
 431
 432         case OID_GEN_DIRECTED_FRAMES_XMIT:
 433                 DEBUG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __FUNCTION__);
 434                 /* dito */
 435                 if (rndis_per_dev_params [configNr].stats) {
 436                         *outbuf = cpu_to_le32 (
 437                                 (rndis_per_dev_params [configNr]
 438                                         .stats->tx_packets -
 439                                  rndis_per_dev_params [configNr]
 440                                          .stats->tx_errors -
 441                                  rndis_per_dev_params [configNr]
 442                                          .stats->tx_dropped)
 443                                 / 123);
 444                         retval = 0;
 445                 }
 446                 break;
 447
 448         case OID_GEN_MULTICAST_BYTES_XMIT:
 449                 DEBUG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __FUNCTION__);
 450                 if (rndis_per_dev_params [configNr].stats) {
 451                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 452                                         .stats->multicast*1234);
 453                         retval = 0;
 454                 }
 455                 break;
 456
 457         case OID_GEN_MULTICAST_FRAMES_XMIT:
 458                 DEBUG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __FUNCTION__);
 459                 if (rndis_per_dev_params [configNr].stats) {
 460                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 461                                         .stats->multicast);
 462                         retval = 0;
 463                 }
 464                 break;
 465
 466         case OID_GEN_BROADCAST_BYTES_XMIT:
 467                 DEBUG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __FUNCTION__);
 468                 if (rndis_per_dev_params [configNr].stats) {
 469                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 470                                         .stats->tx_packets/42*255);
 471                         retval = 0;
 472                 }
 473                 break;
 474
 475         case OID_GEN_BROADCAST_FRAMES_XMIT:
 476                 DEBUG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __FUNCTION__);
 477                 if (rndis_per_dev_params [configNr].stats) {
 478                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 479                                         .stats->tx_packets/42);
 480                         retval = 0;
 481                 }
 482                 break;
 483
 484         case OID_GEN_DIRECTED_BYTES_RCV:
 485                 DEBUG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __FUNCTION__);
 486                 *outbuf = __constant_cpu_to_le32 (0);
 487                 retval = 0;
 488                 break;
 489
 490         case OID_GEN_DIRECTED_FRAMES_RCV:
 491                 DEBUG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __FUNCTION__);
 492                 *outbuf = __constant_cpu_to_le32 (0);
 493                 retval = 0;
 494                 break;
 495
 496         case OID_GEN_MULTICAST_BYTES_RCV:
 497                 DEBUG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __FUNCTION__);
 498                 if (rndis_per_dev_params [configNr].stats) {
 499                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 500                                         .stats->multicast * 1111);
 501                         retval = 0;
 502                 }
 503                 break;
 504
 505         case OID_GEN_MULTICAST_FRAMES_RCV:
 506                 DEBUG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __FUNCTION__);
 507                 if (rndis_per_dev_params [configNr].stats) {
 508                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 509                                         .stats->multicast);
 510                         retval = 0;
 511                 }
 512                 break;
 513
 514         case OID_GEN_BROADCAST_BYTES_RCV:
 515                 DEBUG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __FUNCTION__);
 516                 if (rndis_per_dev_params [configNr].stats) {
 517                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 518                                         .stats->rx_packets/42*255);
 519                         retval = 0;
 520                 }
 521                 break;
 522
 523         case OID_GEN_BROADCAST_FRAMES_RCV:
 524                 DEBUG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __FUNCTION__);
 525                 if (rndis_per_dev_params [configNr].stats) {
 526                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 527                                         .stats->rx_packets/42);
 528                         retval = 0;
 529                 }
 530                 break;
 531
 532         case OID_GEN_RCV_CRC_ERROR:
 533                 DEBUG("%s: OID_GEN_RCV_CRC_ERROR\n", __FUNCTION__);
 534                 if (rndis_per_dev_params [configNr].stats) {
 535                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 536                                         .stats->rx_crc_errors);
 537                         retval = 0;
 538                 }
 539                 break;
 540
 541         case OID_GEN_TRANSMIT_QUEUE_LENGTH:
 542                 DEBUG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __FUNCTION__);
 543                 *outbuf = __constant_cpu_to_le32 (0);
 544                 retval = 0;
 545                 break;
 546 #endif  /* RNDIS_OPTIONAL_STATS */
 547
 548         /* ieee802.3 OIDs (table 4-3) */
 549
 550         /* mandatory */
 551         case OID_802_3_PERMANENT_ADDRESS:
 552                 DEBUG("%s: OID_802_3_PERMANENT_ADDRESS\n", __FUNCTION__);
 553                 if (rndis_per_dev_params [configNr].dev) {
 554                         length = ETH_ALEN;
 555                         memcpy (outbuf,
 556                                 rndis_per_dev_params [configNr].host_mac,
 557                                 length);
 558                         retval = 0;
 559                 }
 560                 break;
 561
 562         /* mandatory */
 563         case OID_802_3_CURRENT_ADDRESS:
 564                 DEBUG("%s: OID_802_3_CURRENT_ADDRESS\n", __FUNCTION__);
 565                 if (rndis_per_dev_params [configNr].dev) {
 566                         length = ETH_ALEN;
 567                         memcpy (outbuf,
 568                                 rndis_per_dev_params [configNr].host_mac,
 569                                 length);
 570                         retval = 0;
 571                 }
 572                 break;
 573
 574         /* mandatory */
 575         case OID_802_3_MULTICAST_LIST:
 576                 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 577                 /* Multicast base address only */
 578                 *outbuf = __constant_cpu_to_le32 (0xE0000000);
 579                 retval = 0;
 580                 break;
 581
 582         /* mandatory */
 583         case OID_802_3_MAXIMUM_LIST_SIZE:
 584                 DEBUG("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __FUNCTION__);
 585                 /* Multicast base address only */
 586                 *outbuf = __constant_cpu_to_le32 (1);
 587                 retval = 0;
 588                 break;
 589
 590         case OID_802_3_MAC_OPTIONS:
 591                 DEBUG("%s: OID_802_3_MAC_OPTIONS\n", __FUNCTION__);
 592                 break;
 593
 594         /* ieee802.3 statistics OIDs (table 4-4) */
 595
 596         /* mandatory */
 597         case OID_802_3_RCV_ERROR_ALIGNMENT:
 598                 DEBUG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __FUNCTION__);
 599                 if (rndis_per_dev_params [configNr].stats) {
 600                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 601                                         .stats->rx_frame_errors);
 602                         retval = 0;
 603                 }
 604                 break;
 605
 606         /* mandatory */
 607         case OID_802_3_XMIT_ONE_COLLISION:
 608                 DEBUG("%s: OID_802_3_XMIT_ONE_COLLISION\n", __FUNCTION__);
 609                 *outbuf = __constant_cpu_to_le32 (0);
 610                 retval = 0;
 611                 break;
 612
 613         /* mandatory */
 614         case OID_802_3_XMIT_MORE_COLLISIONS:
 615                 DEBUG("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __FUNCTION__);
 616                 *outbuf = __constant_cpu_to_le32 (0);
 617                 retval = 0;
 618                 break;
 619
 620 #ifdef  RNDIS_OPTIONAL_STATS
 621         case OID_802_3_XMIT_DEFERRED:
 622                 DEBUG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
 623                 /* TODO */
 624                 break;
 625
 626         case OID_802_3_XMIT_MAX_COLLISIONS:
 627                 DEBUG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
 628                 /* TODO */
 629                 break;
 630
 631         case OID_802_3_RCV_OVERRUN:
 632                 DEBUG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
 633                 /* TODO */
 634                 break;
 635
 636         case OID_802_3_XMIT_UNDERRUN:
 637                 DEBUG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
 638                 /* TODO */
 639                 break;
 640
 641         case OID_802_3_XMIT_HEARTBEAT_FAILURE:
 642                 DEBUG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
 643                 /* TODO */
 644                 break;
 645
 646         case OID_802_3_XMIT_TIMES_CRS_LOST:
 647                 DEBUG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
 648                 /* TODO */
 649                 break;
 650
 651         case OID_802_3_XMIT_LATE_COLLISIONS:
 652                 DEBUG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __FUNCTION__);
 653                 /* TODO */
 654                 break;
 655 #endif  /* RNDIS_OPTIONAL_STATS */
 656
 657 #ifdef  RNDIS_PM
 658         /* power management OIDs (table 4-5) */
 659         case OID_PNP_CAPABILITIES:
 660                 DEBUG("%s: OID_PNP_CAPABILITIES\n", __FUNCTION__);
 661
 662                 /* for now, no wakeup capabilities */
 663                 length = sizeof (struct NDIS_PNP_CAPABILITIES);
 664                 memset(outbuf, 0, length);
 665                 retval = 0;
 666                 break;
 667         case OID_PNP_QUERY_POWER:
 668                 DEBUG("%s: OID_PNP_QUERY_POWER D%d\n", __FUNCTION__,
 669                                 le32_to_cpup((__le32 *) buf) - 1);
 670                 /* only suspend is a real power state, and
 671                  * it can't be entered by OID_PNP_SET_POWER...
 672                  */
 673                 length = 0;
 674                 retval = 0;
 675                 break;
 676 #endif
 677
 678         default:
 679                 printk (KERN_WARNING "%s: query unknown OID 0x%08X\n",
 680                          __FUNCTION__, OID);
 681         }
 682         if (retval < 0)
 683                 length = 0;
 684
 685         resp->InformationBufferLength = cpu_to_le32 (length);
 686         r->length = length + sizeof *resp;
 687         resp->MessageLength = cpu_to_le32 (r->length);
 688         return retval;
 689 }
 690
 691 static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len,
 692                               rndis_resp_t *r)
 693 {
 694         rndis_set_cmplt_type            *resp;
 695         int                             i, retval = -ENOTSUPP;
 696         struct rndis_params             *params;
 697
 698         if (!r)
 699                 return -ENOMEM;
 700         resp = (rndis_set_cmplt_type *) r->buf;
 701         if (!resp)
 702                 return -ENOMEM;
 703
 704         if (buf_len && rndis_debug > 1) {
 705                 DEBUG("set OID %08x value, len %d:\n", OID, buf_len);
 706                 for (i = 0; i < buf_len; i += 16) {
 707                         DEBUG ("%03d: %08x %08x %08x %08x\n", i,
 708                                 le32_to_cpup((__le32 *)&buf[i]),
 709                                 le32_to_cpup((__le32 *)&buf[i + 4]),
 710                                 le32_to_cpup((__le32 *)&buf[i + 8]),
 711                                 le32_to_cpup((__le32 *)&buf[i + 12]));
 712                 }
 713         }
 714
 715         params = &rndis_per_dev_params [configNr];
 716         switch (OID) {
 717         case OID_GEN_CURRENT_PACKET_FILTER:
 718
 719                 /* these NDIS_PACKET_TYPE_* bitflags are shared with
 720                  * cdc_filter; it's not RNDIS-specific
 721                  * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
 722                  *      PROMISCUOUS, DIRECTED,
 723                  *      MULTICAST, ALL_MULTICAST, BROADCAST
 724                  */
 725                 *params->filter = (u16) le32_to_cpup((__le32 *)buf);
 726                 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
 727                         __FUNCTION__, *params->filter);
 728
 729                 /* this call has a significant side effect:  it's
 730                  * what makes the packet flow start and stop, like
 731                  * activating the CDC Ethernet altsetting.
 732                  */
 733 #ifdef  RNDIS_PM
 734 update_linkstate:
 735 #endif
 736                 retval = 0;
 737                 if (*params->filter) {
 738                         params->state = RNDIS_DATA_INITIALIZED;
 739                         netif_carrier_on(params->dev);
 740                         if (netif_running(params->dev))
 741                                 netif_wake_queue (params->dev);
 742                 } else {
 743                         params->state = RNDIS_INITIALIZED;
 744                         netif_carrier_off (params->dev);
 745                         netif_stop_queue (params->dev);
 746                 }
 747                 break;
 748
 749         case OID_802_3_MULTICAST_LIST:
 750                 /* I think we can ignore this */
 751                 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 752                 retval = 0;
 753                 break;
 754 #if 0
 755         case OID_GEN_RNDIS_CONFIG_PARAMETER:
 756                 {
 757                 struct rndis_config_parameter   *param;
 758                 param = (struct rndis_config_parameter *) buf;
 759                 DEBUG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
 760                         __FUNCTION__,
 761                         min(cpu_to_le32(param->ParameterNameLength),80),
 762                         buf + param->ParameterNameOffset);
 763                 retval = 0;
 764                 }
 765                 break;
 766 #endif
 767
 768 #ifdef  RNDIS_PM
 769         case OID_PNP_SET_POWER:
 770                 /* The only real power state is USB suspend, and RNDIS requests
 771                  * can't enter it; this one isn't really about power.  After
 772                  * resuming, Windows forces a reset, and then SET_POWER D0.
 773                  * FIXME ... then things go batty; Windows wedges itself.
 774                  */
 775                 i = le32_to_cpup((__force __le32 *)buf);
 776                 DEBUG("%s: OID_PNP_SET_POWER D%d\n", __FUNCTION__, i - 1);
 777                 switch (i) {
 778                 case NdisDeviceStateD0:
 779                         *params->filter = params->saved_filter;
 780                         goto update_linkstate;
 781                 case NdisDeviceStateD3:
 782                 case NdisDeviceStateD2:
 783                 case NdisDeviceStateD1:
 784                         params->saved_filter = *params->filter;
 785                         retval = 0;
 786                         break;
 787                 }
 788                 break;
 789
 790 #ifdef  RNDIS_WAKEUP
 791         // no wakeup support advertised, so wakeup OIDs always fail:
 792         //  - OID_PNP_ENABLE_WAKE_UP
 793         //  - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN
 794 #endif
 795
 796 #endif  /* RNDIS_PM */
 797
 798         default:
 799                 printk (KERN_WARNING "%s: set unknown OID 0x%08X, size %d\n",
 800                          __FUNCTION__, OID, buf_len);
 801         }
 802
 803         return retval;
 804 }
 805
 806 /*
 807  * Response Functions
 808  */
 809
 810 static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
 811 {
 812         rndis_init_cmplt_type   *resp;
 813         rndis_resp_t            *r;
 814
 815         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 816
 817         r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
 818         if (!r)
 819                 return -ENOMEM;
 820         resp = (rndis_init_cmplt_type *) r->buf;
 821
 822         resp->MessageType = __constant_cpu_to_le32 (
 823                         REMOTE_NDIS_INITIALIZE_CMPLT);
 824         resp->MessageLength = __constant_cpu_to_le32 (52);
 825         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 826         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 827         resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
 828         resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
 829         resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
 830         resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
 831         resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
 832         resp->MaxTransferSize = cpu_to_le32 (
 833                   rndis_per_dev_params [configNr].dev->mtu
 834                 + sizeof (struct ethhdr)
 835                 + sizeof (struct rndis_packet_msg_type)
 836                 + 22);
 837         resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
 838         resp->AFListOffset = __constant_cpu_to_le32 (0);
 839         resp->AFListSize = __constant_cpu_to_le32 (0);
 840
 841         if (rndis_per_dev_params [configNr].ack)
 842             rndis_per_dev_params [configNr].ack (
 843                         rndis_per_dev_params [configNr].dev);
 844
 845         return 0;
 846 }
 847
 848 static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
 849 {
 850         rndis_query_cmplt_type *resp;
 851         rndis_resp_t            *r;
 852
 853         // DEBUG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
 854         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 855
 856         /*
 857          * we need more memory:
 858          * gen_ndis_query_resp expects enough space for
 859          * rndis_query_cmplt_type followed by data.
 860          * oid_supported_list is the largest data reply
 861          */
 862         r = rndis_add_response (configNr,
 863                 sizeof (oid_supported_list) + sizeof(rndis_query_cmplt_type));
 864         if (!r)
 865                 return -ENOMEM;
 866         resp = (rndis_query_cmplt_type *) r->buf;
 867
 868         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
 869         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 870
 871         if (gen_ndis_query_resp (configNr, le32_to_cpu (buf->OID),
 872                         le32_to_cpu(buf->InformationBufferOffset)
 873                                         + 8 + (u8 *) buf,
 874                         le32_to_cpu(buf->InformationBufferLength),
 875                         r)) {
 876                 /* OID not supported */
 877                 resp->Status = __constant_cpu_to_le32 (
 878                                 RNDIS_STATUS_NOT_SUPPORTED);
 879                 resp->MessageLength = __constant_cpu_to_le32 (sizeof *resp);
 880                 resp->InformationBufferLength = __constant_cpu_to_le32 (0);
 881                 resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
 882         } else
 883                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 884
 885         if (rndis_per_dev_params [configNr].ack)
 886             rndis_per_dev_params [configNr].ack (
 887                         rndis_per_dev_params [configNr].dev);
 888         return 0;
 889 }
 890
 891 static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
 892 {
 893         u32                     BufLength, BufOffset;
 894         rndis_set_cmplt_type    *resp;
 895         rndis_resp_t            *r;
 896
 897         r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
 898         if (!r)
 899                 return -ENOMEM;
 900         resp = (rndis_set_cmplt_type *) r->buf;
 901
 902         BufLength = le32_to_cpu (buf->InformationBufferLength);
 903         BufOffset = le32_to_cpu (buf->InformationBufferOffset);
 904
 905 #ifdef  VERBOSE
 906         DEBUG("%s: Length: %d\n", __FUNCTION__, BufLength);
 907         DEBUG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
 908         DEBUG("%s: InfoBuffer: ", __FUNCTION__);
 909
 910         for (i = 0; i < BufLength; i++) {
 911                 DEBUG ("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
 912         }
 913
 914         DEBUG ("\n");
 915 #endif
 916
 917         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
 918         resp->MessageLength = __constant_cpu_to_le32 (16);
 919         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 920         if (gen_ndis_set_resp (configNr, le32_to_cpu (buf->OID),
 921                                ((u8 *) buf) + 8 + BufOffset, BufLength, r))
 922             resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
 923         else resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 924
 925         if (rndis_per_dev_params [configNr].ack)
 926             rndis_per_dev_params [configNr].ack (
 927                         rndis_per_dev_params [configNr].dev);
 928
 929         return 0;
 930 }
 931
 932 static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
 933 {
 934         rndis_reset_cmplt_type  *resp;
 935         rndis_resp_t            *r;
 936
 937         r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type));
 938         if (!r)
 939                 return -ENOMEM;
 940         resp = (rndis_reset_cmplt_type *) r->buf;
 941
 942         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
 943         resp->MessageLength = __constant_cpu_to_le32 (16);
 944         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 945         /* resent information */
 946         resp->AddressingReset = __constant_cpu_to_le32 (1);
 947
 948         if (rndis_per_dev_params [configNr].ack)
 949             rndis_per_dev_params [configNr].ack (
 950                         rndis_per_dev_params [configNr].dev);
 951
 952         return 0;
 953 }
 954
 955 static int rndis_keepalive_response (int configNr,
 956                                      rndis_keepalive_msg_type *buf)
 957 {
 958         rndis_keepalive_cmplt_type      *resp;
 959         rndis_resp_t                    *r;
 960
 961         /* host "should" check only in RNDIS_DATA_INITIALIZED state */
 962
 963         r = rndis_add_response (configNr, sizeof (rndis_keepalive_cmplt_type));
 964         if (!r)
 965                 return -ENOMEM;
 966         resp = (rndis_keepalive_cmplt_type *) r->buf;
 967
 968         resp->MessageType = __constant_cpu_to_le32 (
 969                         REMOTE_NDIS_KEEPALIVE_CMPLT);
 970         resp->MessageLength = __constant_cpu_to_le32 (16);
 971         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 972         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 973
 974         if (rndis_per_dev_params [configNr].ack)
 975             rndis_per_dev_params [configNr].ack (
 976                         rndis_per_dev_params [configNr].dev);
 977
 978         return 0;
 979 }
 980
 981
 982 /*
 983  * Device to Host Comunication
 984  */
 985 static int rndis_indicate_status_msg (int configNr, u32 status)
 986 {
 987         rndis_indicate_status_msg_type  *resp;
 988         rndis_resp_t                    *r;
 989
 990         if (rndis_per_dev_params [configNr].state == RNDIS_UNINITIALIZED)
 991             return -ENOTSUPP;
 992
 993         r = rndis_add_response (configNr,
 994                                 sizeof (rndis_indicate_status_msg_type));
 995         if (!r)
 996                 return -ENOMEM;
 997         resp = (rndis_indicate_status_msg_type *) r->buf;
 998
 999         resp->MessageType = __constant_cpu_to_le32 (
1000                         REMOTE_NDIS_INDICATE_STATUS_MSG);
1001         resp->MessageLength = __constant_cpu_to_le32 (20);
1002         resp->Status = cpu_to_le32 (status);
1003         resp->StatusBufferLength = __constant_cpu_to_le32 (0);
1004         resp->StatusBufferOffset = __constant_cpu_to_le32 (0);
1005
1006         if (rndis_per_dev_params [configNr].ack)
1007             rndis_per_dev_params [configNr].ack (
1008                         rndis_per_dev_params [configNr].dev);
1009         return 0;
1010 }
1011
1012 int rndis_signal_connect (int configNr)
1013 {
1014         rndis_per_dev_params [configNr].media_state
1015                         = NDIS_MEDIA_STATE_CONNECTED;
1016         return rndis_indicate_status_msg (configNr,
1017                                           RNDIS_STATUS_MEDIA_CONNECT);
1018 }
1019
1020 int rndis_signal_disconnect (int configNr)
1021 {
1022         rndis_per_dev_params [configNr].media_state
1023                         = NDIS_MEDIA_STATE_DISCONNECTED;
1024         return rndis_indicate_status_msg (configNr,
1025                                           RNDIS_STATUS_MEDIA_DISCONNECT);
1026 }
1027
1028 void rndis_uninit (int configNr)
1029 {
1030         u8 *buf;
1031         u32 length;
1032
1033         if (configNr >= RNDIS_MAX_CONFIGS)
1034                 return;
1035         rndis_per_dev_params [configNr].used = 0;
1036         rndis_per_dev_params [configNr].state = RNDIS_UNINITIALIZED;
1037
1038         /* drain the response queue */
1039         while ((buf = rndis_get_next_response(configNr, &length)))
1040                 rndis_free_response(configNr, buf);
1041 }
1042
1043 void rndis_set_host_mac (int configNr, const u8 *addr)
1044 {
1045         rndis_per_dev_params [configNr].host_mac = addr;
1046 }
1047
1048 /*
1049  * Message Parser
1050  */
1051 int rndis_msg_parser (u8 configNr, u8 *buf)
1052 {
1053         u32 MsgType, MsgLength;
1054         __le32 *tmp;
1055         struct rndis_params             *params;
1056
1057         if (!buf)
1058                 return -ENOMEM;
1059
1060         tmp = (__le32 *) buf;
1061         MsgType   = le32_to_cpup(tmp++);
1062         MsgLength = le32_to_cpup(tmp++);
1063
1064         if (configNr >= RNDIS_MAX_CONFIGS)
1065                 return -ENOTSUPP;
1066         params = &rndis_per_dev_params [configNr];
1067
1068         /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
1069          * rx/tx statistics and link status, in addition to KEEPALIVE traffic
1070          * and normal HC level polling to see if there's any IN traffic.
1071          */
1072
1073         /* For USB: responses may take up to 10 seconds */
1074         switch (MsgType) {
1075         case REMOTE_NDIS_INITIALIZE_MSG:
1076                 DEBUG("%s: REMOTE_NDIS_INITIALIZE_MSG\n",
1077                         __FUNCTION__ );
1078                 params->state = RNDIS_INITIALIZED;
1079                 return  rndis_init_response (configNr,
1080                                              (rndis_init_msg_type *) buf);
1081
1082         case REMOTE_NDIS_HALT_MSG:
1083                 DEBUG("%s: REMOTE_NDIS_HALT_MSG\n",
1084                         __FUNCTION__ );
1085                 params->state = RNDIS_UNINITIALIZED;
1086                 if (params->dev) {
1087                         netif_carrier_off (params->dev);
1088                         netif_stop_queue (params->dev);
1089                 }
1090                 return 0;
1091
1092         case REMOTE_NDIS_QUERY_MSG:
1093                 return rndis_query_response (configNr,
1094                                              (rndis_query_msg_type *) buf);
1095
1096         case REMOTE_NDIS_SET_MSG:
1097                 return rndis_set_response (configNr,
1098                                            (rndis_set_msg_type *) buf);
1099
1100         case REMOTE_NDIS_RESET_MSG:
1101                 DEBUG("%s: REMOTE_NDIS_RESET_MSG\n",
1102                         __FUNCTION__ );
1103                 return rndis_reset_response (configNr,
1104                                              (rndis_reset_msg_type *) buf);
1105
1106         case REMOTE_NDIS_KEEPALIVE_MSG:
1107                 /* For USB: host does this every 5 seconds */
1108                 if (rndis_debug > 1)
1109                         DEBUG("%s: REMOTE_NDIS_KEEPALIVE_MSG\n",
1110                                 __FUNCTION__ );
1111                 return rndis_keepalive_response (configNr,
1112                                                  (rndis_keepalive_msg_type *)
1113                                                  buf);
1114
1115         default:
1116                 /* At least Windows XP emits some undefined RNDIS messages.
1117                  * In one case those messages seemed to relate to the host
1118                  * suspending itself.
1119                  */
1120                 printk (KERN_WARNING
1121                         "%s: unknown RNDIS message 0x%08X len %d\n",
1122                         __FUNCTION__ , MsgType, MsgLength);
1123                 {
1124                         unsigned i;
1125                         for (i = 0; i < MsgLength; i += 16) {
1126                                 DEBUG ("%03d: "
1127                                         " %02x %02x %02x %02x"
1128                                         " %02x %02x %02x %02x"
1129                                         " %02x %02x %02x %02x"
1130                                         " %02x %02x %02x %02x"
1131                                         "\n",
1132                                         i,
1133                                         buf[i], buf [i+1],
1134                                                 buf[i+2], buf[i+3],
1135                                         buf[i+4], buf [i+5],
1136                                                 buf[i+6], buf[i+7],
1137                                         buf[i+8], buf [i+9],
1138                                                 buf[i+10], buf[i+11],
1139                                         buf[i+12], buf [i+13],
1140                                                 buf[i+14], buf[i+15]);
1141                         }
1142                 }
1143                 break;
1144         }
1145
1146         return -ENOTSUPP;
1147 }
1148
1149 int rndis_register (int (* rndis_control_ack) (struct net_device *))
1150 {
1151         u8 i;
1152
1153         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1154                 if (!rndis_per_dev_params [i].used) {
1155                         rndis_per_dev_params [i].used = 1;
1156                         rndis_per_dev_params [i].ack = rndis_control_ack;
1157                         DEBUG("%s: configNr = %d\n", __FUNCTION__, i);
1158                         return i;
1159                 }
1160         }
1161         DEBUG("failed\n");
1162
1163         return -1;
1164 }
1165
1166 void rndis_deregister (int configNr)
1167 {
1168         DEBUG("%s: \n", __FUNCTION__ );
1169
1170         if (configNr >= RNDIS_MAX_CONFIGS) return;
1171         rndis_per_dev_params [configNr].used = 0;
1172
1173         return;
1174 }
1175
1176 int rndis_set_param_dev (u8 configNr, struct net_device *dev,
1177                          struct net_device_stats *stats,
1178                          u16 *cdc_filter)
1179 {
1180         DEBUG("%s:\n", __FUNCTION__ );
1181         if (!dev || !stats) return -1;
1182         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1183
1184         rndis_per_dev_params [configNr].dev = dev;
1185         rndis_per_dev_params [configNr].stats = stats;
1186         rndis_per_dev_params [configNr].filter = cdc_filter;
1187
1188         return 0;
1189 }
1190
1191 int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr)
1192 {
1193         DEBUG("%s:\n", __FUNCTION__ );
1194         if (!vendorDescr) return -1;
1195         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1196
1197         rndis_per_dev_params [configNr].vendorID = vendorID;
1198         rndis_per_dev_params [configNr].vendorDescr = vendorDescr;
1199
1200         return 0;
1201 }
1202
1203 int rndis_set_param_medium (u8 configNr, u32 medium, u32 speed)
1204 {
1205         DEBUG("%s: %u %u\n", __FUNCTION__, medium, speed);
1206         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1207
1208         rndis_per_dev_params [configNr].medium = medium;
1209         rndis_per_dev_params [configNr].speed = speed;
1210
1211         return 0;
1212 }
1213
1214 void rndis_add_hdr (struct sk_buff *skb)
1215 {
1216         struct rndis_packet_msg_type    *header;
1217
1218         if (!skb)
1219                 return;
1220         header = (void *) skb_push (skb, sizeof *header);
1221         memset (header, 0, sizeof *header);
1222         header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
1223         header->MessageLength = cpu_to_le32(skb->len);
1224         header->DataOffset = __constant_cpu_to_le32 (36);
1225         header->DataLength = cpu_to_le32(skb->len - sizeof *header);
1226 }
1227
1228 void rndis_free_response (int configNr, u8 *buf)
1229 {
1230         rndis_resp_t            *r;
1231         struct list_head        *act, *tmp;
1232
1233         list_for_each_safe (act, tmp,
1234                             &(rndis_per_dev_params [configNr].resp_queue))
1235         {
1236                 r = list_entry (act, rndis_resp_t, list);
1237                 if (r && r->buf == buf) {
1238                         list_del (&r->list);
1239                         kfree (r);
1240                 }
1241         }
1242 }
1243
1244 u8 *rndis_get_next_response (int configNr, u32 *length)
1245 {
1246         rndis_resp_t            *r;
1247         struct list_head        *act, *tmp;
1248
1249         if (!length) return NULL;
1250
1251         list_for_each_safe (act, tmp,
1252                             &(rndis_per_dev_params [configNr].resp_queue))
1253         {
1254                 r = list_entry (act, rndis_resp_t, list);
1255                 if (!r->send) {
1256                         r->send = 1;
1257                         *length = r->length;
1258                         return r->buf;
1259                 }
1260         }
1261
1262         return NULL;
1263 }
1264
1265 static rndis_resp_t *rndis_add_response (int configNr, u32 length)
1266 {
1267         rndis_resp_t    *r;
1268
1269         /* NOTE:  this gets copied into ether.c USB_BUFSIZ bytes ... */
1270         r = kmalloc (sizeof (rndis_resp_t) + length, GFP_ATOMIC);
1271         if (!r) return NULL;
1272
1273         r->buf = (u8 *) (r + 1);
1274         r->length = length;
1275         r->send = 0;
1276
1277         list_add_tail (&r->list,
1278                        &(rndis_per_dev_params [configNr].resp_queue));
1279         return r;
1280 }
1281
1282 int rndis_rm_hdr(struct sk_buff *skb)
1283 {
1284         /* tmp points to a struct rndis_packet_msg_type */
1285         __le32          *tmp = (void *) skb->data;
1286
1287         /* MessageType, MessageLength */
1288         if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
1289                         != get_unaligned(tmp++))
1290                 return -EINVAL;
1291         tmp++;
1292
1293         /* DataOffset, DataLength */
1294         if (!skb_pull(skb, le32_to_cpu(get_unaligned(tmp++))
1295                         + 8 /* offset of DataOffset */))
1296                 return -EOVERFLOW;
1297         skb_trim(skb, le32_to_cpu(get_unaligned(tmp++)));
1298
1299         return 0;
1300 }
1301
1302 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1303
1304 static int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof,
1305                      void *data)
1306 {
1307         char *out = page;
1308         int len;
1309         rndis_params *param = (rndis_params *) data;
1310
1311         out += snprintf (out, count,
1312                          "Config Nr. %d\n"
1313                          "used      : %s\n"
1314                          "state     : %s\n"
1315                          "medium    : 0x%08X\n"
1316                          "speed     : %d\n"
1317                          "cable     : %s\n"
1318                          "vendor ID : 0x%08X\n"
1319                          "vendor    : %s\n",
1320                          param->confignr, (param->used) ? "y" : "n",
1321                          ({ char *s = "?";
1322                          switch (param->state) {
1323                          case RNDIS_UNINITIALIZED:
1324                                 s = "RNDIS_UNINITIALIZED"; break;
1325                          case RNDIS_INITIALIZED:
1326                                 s = "RNDIS_INITIALIZED"; break;
1327                          case RNDIS_DATA_INITIALIZED:
1328                                 s = "RNDIS_DATA_INITIALIZED"; break;
1329                         }; s; }),
1330                          param->medium,
1331                          (param->media_state) ? 0 : param->speed*100,
1332                          (param->media_state) ? "disconnected" : "connected",
1333                          param->vendorID, param->vendorDescr);
1334
1335         len = out - page;
1336         len -= off;
1337
1338         if (len < count) {
1339                 *eof = 1;
1340                 if (len <= 0)
1341                         return 0;
1342         } else
1343                 len = count;
1344
1345         *start = page + off;
1346         return len;
1347 }
1348
1349 static int rndis_proc_write (struct file *file, const char __user *buffer,
1350                       unsigned long count, void *data)
1351 {
1352         rndis_params *p = data;
1353         u32 speed = 0;
1354         int i, fl_speed = 0;
1355
1356         for (i = 0; i < count; i++) {
1357                 char c;
1358                 if (get_user(c, buffer))
1359                         return -EFAULT;
1360                 switch (c) {
1361                 case '0':
1362                 case '1':
1363                 case '2':
1364                 case '3':
1365                 case '4':
1366                 case '5':
1367                 case '6':
1368                 case '7':
1369                 case '8':
1370                 case '9':
1371                         fl_speed = 1;
1372                         speed = speed*10 + c - '0';
1373                         break;
1374                 case 'C':
1375                 case 'c':
1376                         rndis_signal_connect (p->confignr);
1377                         break;
1378                 case 'D':
1379                 case 'd':
1380                         rndis_signal_disconnect(p->confignr);
1381                         break;
1382                 default:
1383                         if (fl_speed) p->speed = speed;
1384                         else DEBUG ("%c is not valid\n", c);
1385                         break;
1386                 }
1387
1388                 buffer++;
1389         }
1390
1391         return count;
1392 }
1393
1394 #define NAME_TEMPLATE   "driver/rndis-%03d"
1395
1396 static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
1397
1398 #endif  /* CONFIG_USB_GADGET_DEBUG_FILES */
1399
1400
1401 int __init rndis_init (void)
1402 {
1403         u8 i;
1404
1405         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1406 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1407                 char name [20];
1408
1409                 sprintf (name, NAME_TEMPLATE, i);
1410                 if (!(rndis_connect_state [i]
1411                                 = create_proc_entry (name, 0660, NULL)))
1412                 {
1413                         DEBUG ("%s :remove entries", __FUNCTION__);
1414                         while (i) {
1415                                 sprintf (name, NAME_TEMPLATE, --i);
1416                                 remove_proc_entry (name, NULL);
1417                         }
1418                         DEBUG ("\n");
1419                         return -EIO;
1420                 }
1421
1422                 rndis_connect_state [i]->nlink = 1;
1423                 rndis_connect_state [i]->write_proc = rndis_proc_write;
1424                 rndis_connect_state [i]->read_proc = rndis_proc_read;
1425                 rndis_connect_state [i]->data = (void *)
1426                                 (rndis_per_dev_params + i);
1427 #endif
1428                 rndis_per_dev_params [i].confignr = i;
1429                 rndis_per_dev_params [i].used = 0;
1430                 rndis_per_dev_params [i].state = RNDIS_UNINITIALIZED;
1431                 rndis_per_dev_params [i].media_state
1432                                 = NDIS_MEDIA_STATE_DISCONNECTED;
1433                 INIT_LIST_HEAD (&(rndis_per_dev_params [i].resp_queue));
1434         }
1435
1436         return 0;
1437 }
1438
1439 void rndis_exit (void)
1440 {
1441 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1442         u8 i;
1443         char name [20];
1444
1445         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1446                 sprintf (name, NAME_TEMPLATE, i);
1447                 remove_proc_entry (name, NULL);
1448         }
1449 #endif
1450 }
1451