err.no Git - linux-2.6/blob - drivers/usb/gadget/rndis.c

   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/module.h>
  27 #include <linux/moduleparam.h>
  28 #include <linux/kernel.h>
  29 #include <linux/errno.h>
  30 #include <linux/init.h>
  31 #include <linux/list.h>
  32 #include <linux/proc_fs.h>
  33 #include <linux/netdevice.h>
  34
  35 #include <asm/io.h>
  36 #include <asm/byteorder.h>
  37 #include <asm/system.h>
  38 #include <asm/unaligned.h>
  39
  40
  41 #undef  RNDIS_PM
  42 #undef  RNDIS_WAKEUP
  43 #undef  VERBOSE
  44
  45 #include "rndis.h"
  46
  47
  48 /* The driver for your USB chip needs to support ep0 OUT to work with
  49  * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
  50  *
  51  * Windows hosts need an INF file like Documentation/usb/linux.inf
  52  * and will be happier if you provide the host_addr module parameter.
  53  */
  54
  55 #if 0
  56 #define DBG(str,args...) do { \
  57         if (rndis_debug) \
  58                 printk(KERN_DEBUG str , ## args ); \
  59         } while (0)
  60 static int rndis_debug = 0;
  61
  62 module_param (rndis_debug, int, 0);
  63 MODULE_PARM_DESC (rndis_debug, "enable debugging");
  64
  65 #else
  66
  67 #define rndis_debug             0
  68 #define DBG(str,args...)        do{}while(0)
  69 #endif
  70
  71 #define RNDIS_MAX_CONFIGS       1
  72
  73
  74 static rndis_params rndis_per_dev_params [RNDIS_MAX_CONFIGS];
  75
  76 /* Driver Version */
  77 static const __le32 rndis_driver_version = __constant_cpu_to_le32 (1);
  78
  79 /* Function Prototypes */
  80 static rndis_resp_t *rndis_add_response (int configNr, u32 length);
  81
  82
  83 /* supported OIDs */
  84 static const u32 oid_supported_list [] =
  85 {
  86         /* the general stuff */
  87         OID_GEN_SUPPORTED_LIST,
  88         OID_GEN_HARDWARE_STATUS,
  89         OID_GEN_MEDIA_SUPPORTED,
  90         OID_GEN_MEDIA_IN_USE,
  91         OID_GEN_MAXIMUM_FRAME_SIZE,
  92         OID_GEN_LINK_SPEED,
  93         OID_GEN_TRANSMIT_BLOCK_SIZE,
  94         OID_GEN_RECEIVE_BLOCK_SIZE,
  95         OID_GEN_VENDOR_ID,
  96         OID_GEN_VENDOR_DESCRIPTION,
  97         OID_GEN_VENDOR_DRIVER_VERSION,
  98         OID_GEN_CURRENT_PACKET_FILTER,
  99         OID_GEN_MAXIMUM_TOTAL_SIZE,
 100         OID_GEN_MEDIA_CONNECT_STATUS,
 101         OID_GEN_PHYSICAL_MEDIUM,
 102 #if 0
 103         OID_GEN_RNDIS_CONFIG_PARAMETER,
 104 #endif
 105
 106         /* the statistical stuff */
 107         OID_GEN_XMIT_OK,
 108         OID_GEN_RCV_OK,
 109         OID_GEN_XMIT_ERROR,
 110         OID_GEN_RCV_ERROR,
 111         OID_GEN_RCV_NO_BUFFER,
 112 #ifdef  RNDIS_OPTIONAL_STATS
 113         OID_GEN_DIRECTED_BYTES_XMIT,
 114         OID_GEN_DIRECTED_FRAMES_XMIT,
 115         OID_GEN_MULTICAST_BYTES_XMIT,
 116         OID_GEN_MULTICAST_FRAMES_XMIT,
 117         OID_GEN_BROADCAST_BYTES_XMIT,
 118         OID_GEN_BROADCAST_FRAMES_XMIT,
 119         OID_GEN_DIRECTED_BYTES_RCV,
 120         OID_GEN_DIRECTED_FRAMES_RCV,
 121         OID_GEN_MULTICAST_BYTES_RCV,
 122         OID_GEN_MULTICAST_FRAMES_RCV,
 123         OID_GEN_BROADCAST_BYTES_RCV,
 124         OID_GEN_BROADCAST_FRAMES_RCV,
 125         OID_GEN_RCV_CRC_ERROR,
 126         OID_GEN_TRANSMIT_QUEUE_LENGTH,
 127 #endif  /* RNDIS_OPTIONAL_STATS */
 128
 129         /* mandatory 802.3 */
 130         /* the general stuff */
 131         OID_802_3_PERMANENT_ADDRESS,
 132         OID_802_3_CURRENT_ADDRESS,
 133         OID_802_3_MULTICAST_LIST,
 134         OID_802_3_MAC_OPTIONS,
 135         OID_802_3_MAXIMUM_LIST_SIZE,
 136
 137         /* the statistical stuff */
 138         OID_802_3_RCV_ERROR_ALIGNMENT,
 139         OID_802_3_XMIT_ONE_COLLISION,
 140         OID_802_3_XMIT_MORE_COLLISIONS,
 141 #ifdef  RNDIS_OPTIONAL_STATS
 142         OID_802_3_XMIT_DEFERRED,
 143         OID_802_3_XMIT_MAX_COLLISIONS,
 144         OID_802_3_RCV_OVERRUN,
 145         OID_802_3_XMIT_UNDERRUN,
 146         OID_802_3_XMIT_HEARTBEAT_FAILURE,
 147         OID_802_3_XMIT_TIMES_CRS_LOST,
 148         OID_802_3_XMIT_LATE_COLLISIONS,
 149 #endif  /* RNDIS_OPTIONAL_STATS */
 150
 151 #ifdef  RNDIS_PM
 152         /* PM and wakeup are mandatory for USB: */
 153
 154         /* power management */
 155         OID_PNP_CAPABILITIES,
 156         OID_PNP_QUERY_POWER,
 157         OID_PNP_SET_POWER,
 158
 159 #ifdef  RNDIS_WAKEUP
 160         /* wake up host */
 161         OID_PNP_ENABLE_WAKE_UP,
 162         OID_PNP_ADD_WAKE_UP_PATTERN,
 163         OID_PNP_REMOVE_WAKE_UP_PATTERN,
 164 #endif  /* RNDIS_WAKEUP */
 165 #endif  /* RNDIS_PM */
 166 };
 167
 168
 169 /* NDIS Functions */
 170 static int
 171 gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
 172                 rndis_resp_t *r)
 173 {
 174         int                     retval = -ENOTSUPP;
 175         u32                     length = 4;     /* usually */
 176         __le32                  *outbuf;
 177         int                     i, count;
 178         rndis_query_cmplt_type  *resp;
 179
 180         if (!r) return -ENOMEM;
 181         resp = (rndis_query_cmplt_type *) r->buf;
 182
 183         if (!resp) return -ENOMEM;
 184
 185         if (buf_len && rndis_debug > 1) {
 186                 DBG("query OID %08x value, len %d:\n", OID, buf_len);
 187                 for (i = 0; i < buf_len; i += 16) {
 188                         DBG("%03d: %08x %08x %08x %08x\n", i,
 189                                 le32_to_cpu(get_unaligned((__le32 *)
 190                                         &buf[i])),
 191                                 le32_to_cpu(get_unaligned((__le32 *)
 192                                         &buf[i + 4])),
 193                                 le32_to_cpu(get_unaligned((__le32 *)
 194                                         &buf[i + 8])),
 195                                 le32_to_cpu(get_unaligned((__le32 *)
 196                                         &buf[i + 12])));
 197                 }
 198         }
 199
 200         /* response goes here, right after the header */
 201         outbuf = (__le32 *) &resp[1];
 202         resp->InformationBufferOffset = __constant_cpu_to_le32 (16);
 203
 204         switch (OID) {
 205
 206         /* general oids (table 4-1) */
 207
 208         /* mandatory */
 209         case OID_GEN_SUPPORTED_LIST:
 210                 DBG("%s: OID_GEN_SUPPORTED_LIST\n", __FUNCTION__);
 211                 length = sizeof (oid_supported_list);
 212                 count  = length / sizeof (u32);
 213                 for (i = 0; i < count; i++)
 214                         outbuf[i] = cpu_to_le32 (oid_supported_list[i]);
 215                 retval = 0;
 216                 break;
 217
 218         /* mandatory */
 219         case OID_GEN_HARDWARE_STATUS:
 220                 DBG("%s: OID_GEN_HARDWARE_STATUS\n", __FUNCTION__);
 221                 /* Bogus question!
 222                  * Hardware must be ready to receive high level protocols.
 223                  * BTW:
 224                  * reddite ergo quae sunt Caesaris Caesari
 225                  * et quae sunt Dei Deo!
 226                  */
 227                 *outbuf = __constant_cpu_to_le32 (0);
 228                 retval = 0;
 229                 break;
 230
 231         /* mandatory */
 232         case OID_GEN_MEDIA_SUPPORTED:
 233                 DBG("%s: OID_GEN_MEDIA_SUPPORTED\n", __FUNCTION__);
 234                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
 235                 retval = 0;
 236                 break;
 237
 238         /* mandatory */
 239         case OID_GEN_MEDIA_IN_USE:
 240                 DBG("%s: OID_GEN_MEDIA_IN_USE\n", __FUNCTION__);
 241                 /* one medium, one transport... (maybe you do it better) */
 242                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
 243                 retval = 0;
 244                 break;
 245
 246         /* mandatory */
 247         case OID_GEN_MAXIMUM_FRAME_SIZE:
 248                 DBG("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __FUNCTION__);
 249                 if (rndis_per_dev_params [configNr].dev) {
 250                         *outbuf = cpu_to_le32 (
 251                                 rndis_per_dev_params [configNr].dev->mtu);
 252                         retval = 0;
 253                 }
 254                 break;
 255
 256         /* mandatory */
 257         case OID_GEN_LINK_SPEED:
 258                 if (rndis_debug > 1)
 259                         DBG("%s: OID_GEN_LINK_SPEED\n", __FUNCTION__);
 260                 if (rndis_per_dev_params [configNr].media_state
 261                                 == NDIS_MEDIA_STATE_DISCONNECTED)
 262                         *outbuf = __constant_cpu_to_le32 (0);
 263                 else
 264                         *outbuf = cpu_to_le32 (
 265                                 rndis_per_dev_params [configNr].speed);
 266                 retval = 0;
 267                 break;
 268
 269         /* mandatory */
 270         case OID_GEN_TRANSMIT_BLOCK_SIZE:
 271                 DBG("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __FUNCTION__);
 272                 if (rndis_per_dev_params [configNr].dev) {
 273                         *outbuf = cpu_to_le32 (
 274                                 rndis_per_dev_params [configNr].dev->mtu);
 275                         retval = 0;
 276                 }
 277                 break;
 278
 279         /* mandatory */
 280         case OID_GEN_RECEIVE_BLOCK_SIZE:
 281                 DBG("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __FUNCTION__);
 282                 if (rndis_per_dev_params [configNr].dev) {
 283                         *outbuf = cpu_to_le32 (
 284                                 rndis_per_dev_params [configNr].dev->mtu);
 285                         retval = 0;
 286                 }
 287                 break;
 288
 289         /* mandatory */
 290         case OID_GEN_VENDOR_ID:
 291                 DBG("%s: OID_GEN_VENDOR_ID\n", __FUNCTION__);
 292                 *outbuf = cpu_to_le32 (
 293                         rndis_per_dev_params [configNr].vendorID);
 294                 retval = 0;
 295                 break;
 296
 297         /* mandatory */
 298         case OID_GEN_VENDOR_DESCRIPTION:
 299                 DBG("%s: OID_GEN_VENDOR_DESCRIPTION\n", __FUNCTION__);
 300                 length = strlen (rndis_per_dev_params [configNr].vendorDescr);
 301                 memcpy (outbuf,
 302                         rndis_per_dev_params [configNr].vendorDescr, length);
 303                 retval = 0;
 304                 break;
 305
 306         case OID_GEN_VENDOR_DRIVER_VERSION:
 307                 DBG("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __FUNCTION__);
 308                 /* Created as LE */
 309                 *outbuf = rndis_driver_version;
 310                 retval = 0;
 311                 break;
 312
 313         /* mandatory */
 314         case OID_GEN_CURRENT_PACKET_FILTER:
 315                 DBG("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __FUNCTION__);
 316                 *outbuf = cpu_to_le32 (*rndis_per_dev_params[configNr].filter);
 317                 retval = 0;
 318                 break;
 319
 320         /* mandatory */
 321         case OID_GEN_MAXIMUM_TOTAL_SIZE:
 322                 DBG("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __FUNCTION__);
 323                 *outbuf = __constant_cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
 324                 retval = 0;
 325                 break;
 326
 327         /* mandatory */
 328         case OID_GEN_MEDIA_CONNECT_STATUS:
 329                 if (rndis_debug > 1)
 330                         DBG("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __FUNCTION__);
 331                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 332                                                 .media_state);
 333                 retval = 0;
 334                 break;
 335
 336         case OID_GEN_PHYSICAL_MEDIUM:
 337                 DBG("%s: OID_GEN_PHYSICAL_MEDIUM\n", __FUNCTION__);
 338                 *outbuf = __constant_cpu_to_le32 (0);
 339                 retval = 0;
 340                 break;
 341
 342         /* The RNDIS specification is incomplete/wrong.   Some versions
 343          * of MS-Windows expect OIDs that aren't specified there.  Other
 344          * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
 345          */
 346         case OID_GEN_MAC_OPTIONS:               /* from WinME */
 347                 DBG("%s: OID_GEN_MAC_OPTIONS\n", __FUNCTION__);
 348                 *outbuf = __constant_cpu_to_le32(
 349                           NDIS_MAC_OPTION_RECEIVE_SERIALIZED
 350                         | NDIS_MAC_OPTION_FULL_DUPLEX);
 351                 retval = 0;
 352                 break;
 353
 354         /* statistics OIDs (table 4-2) */
 355
 356         /* mandatory */
 357         case OID_GEN_XMIT_OK:
 358                 if (rndis_debug > 1)
 359                         DBG("%s: OID_GEN_XMIT_OK\n", __FUNCTION__);
 360                 if (rndis_per_dev_params [configNr].stats) {
 361                         *outbuf = cpu_to_le32 (
 362                             rndis_per_dev_params [configNr].stats->tx_packets -
 363                             rndis_per_dev_params [configNr].stats->tx_errors -
 364                             rndis_per_dev_params [configNr].stats->tx_dropped);
 365                         retval = 0;
 366                 }
 367                 break;
 368
 369         /* mandatory */
 370         case OID_GEN_RCV_OK:
 371                 if (rndis_debug > 1)
 372                         DBG("%s: OID_GEN_RCV_OK\n", __FUNCTION__);
 373                 if (rndis_per_dev_params [configNr].stats) {
 374                         *outbuf = cpu_to_le32 (
 375                             rndis_per_dev_params [configNr].stats->rx_packets -
 376                             rndis_per_dev_params [configNr].stats->rx_errors -
 377                             rndis_per_dev_params [configNr].stats->rx_dropped);
 378                         retval = 0;
 379                 }
 380                 break;
 381
 382         /* mandatory */
 383         case OID_GEN_XMIT_ERROR:
 384                 if (rndis_debug > 1)
 385                         DBG("%s: OID_GEN_XMIT_ERROR\n", __FUNCTION__);
 386                 if (rndis_per_dev_params [configNr].stats) {
 387                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 388                                         .stats->tx_errors);
 389                         retval = 0;
 390                 }
 391                 break;
 392
 393         /* mandatory */
 394         case OID_GEN_RCV_ERROR:
 395                 if (rndis_debug > 1)
 396                         DBG("%s: OID_GEN_RCV_ERROR\n", __FUNCTION__);
 397                 if (rndis_per_dev_params [configNr].stats) {
 398                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 399                                         .stats->rx_errors);
 400                         retval = 0;
 401                 }
 402                 break;
 403
 404         /* mandatory */
 405         case OID_GEN_RCV_NO_BUFFER:
 406                 DBG("%s: OID_GEN_RCV_NO_BUFFER\n", __FUNCTION__);
 407                 if (rndis_per_dev_params [configNr].stats) {
 408                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 409                                         .stats->rx_dropped);
 410                         retval = 0;
 411                 }
 412                 break;
 413
 414 #ifdef  RNDIS_OPTIONAL_STATS
 415         case OID_GEN_DIRECTED_BYTES_XMIT:
 416                 DBG("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __FUNCTION__);
 417                 /*
 418                  * Aunt Tilly's size of shoes
 419                  * minus antarctica count of penguins
 420                  * divided by weight of Alpha Centauri
 421                  */
 422                 if (rndis_per_dev_params [configNr].stats) {
 423                         *outbuf = cpu_to_le32 (
 424                                 (rndis_per_dev_params [configNr]
 425                                         .stats->tx_packets -
 426                                  rndis_per_dev_params [configNr]
 427                                          .stats->tx_errors -
 428                                  rndis_per_dev_params [configNr]
 429                                          .stats->tx_dropped)
 430                                 * 123);
 431                         retval = 0;
 432                 }
 433                 break;
 434
 435         case OID_GEN_DIRECTED_FRAMES_XMIT:
 436                 DBG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __FUNCTION__);
 437                 /* dito */
 438                 if (rndis_per_dev_params [configNr].stats) {
 439                         *outbuf = cpu_to_le32 (
 440                                 (rndis_per_dev_params [configNr]
 441                                         .stats->tx_packets -
 442                                  rndis_per_dev_params [configNr]
 443                                          .stats->tx_errors -
 444                                  rndis_per_dev_params [configNr]
 445                                          .stats->tx_dropped)
 446                                 / 123);
 447                         retval = 0;
 448                 }
 449                 break;
 450
 451         case OID_GEN_MULTICAST_BYTES_XMIT:
 452                 DBG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __FUNCTION__);
 453                 if (rndis_per_dev_params [configNr].stats) {
 454                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 455                                         .stats->multicast*1234);
 456                         retval = 0;
 457                 }
 458                 break;
 459
 460         case OID_GEN_MULTICAST_FRAMES_XMIT:
 461                 DBG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __FUNCTION__);
 462                 if (rndis_per_dev_params [configNr].stats) {
 463                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 464                                         .stats->multicast);
 465                         retval = 0;
 466                 }
 467                 break;
 468
 469         case OID_GEN_BROADCAST_BYTES_XMIT:
 470                 DBG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __FUNCTION__);
 471                 if (rndis_per_dev_params [configNr].stats) {
 472                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 473                                         .stats->tx_packets/42*255);
 474                         retval = 0;
 475                 }
 476                 break;
 477
 478         case OID_GEN_BROADCAST_FRAMES_XMIT:
 479                 DBG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __FUNCTION__);
 480                 if (rndis_per_dev_params [configNr].stats) {
 481                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 482                                         .stats->tx_packets/42);
 483                         retval = 0;
 484                 }
 485                 break;
 486
 487         case OID_GEN_DIRECTED_BYTES_RCV:
 488                 DBG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __FUNCTION__);
 489                 *outbuf = __constant_cpu_to_le32 (0);
 490                 retval = 0;
 491                 break;
 492
 493         case OID_GEN_DIRECTED_FRAMES_RCV:
 494                 DBG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __FUNCTION__);
 495                 *outbuf = __constant_cpu_to_le32 (0);
 496                 retval = 0;
 497                 break;
 498
 499         case OID_GEN_MULTICAST_BYTES_RCV:
 500                 DBG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __FUNCTION__);
 501                 if (rndis_per_dev_params [configNr].stats) {
 502                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 503                                         .stats->multicast * 1111);
 504                         retval = 0;
 505                 }
 506                 break;
 507
 508         case OID_GEN_MULTICAST_FRAMES_RCV:
 509                 DBG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __FUNCTION__);
 510                 if (rndis_per_dev_params [configNr].stats) {
 511                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 512                                         .stats->multicast);
 513                         retval = 0;
 514                 }
 515                 break;
 516
 517         case OID_GEN_BROADCAST_BYTES_RCV:
 518                 DBG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __FUNCTION__);
 519                 if (rndis_per_dev_params [configNr].stats) {
 520                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 521                                         .stats->rx_packets/42*255);
 522                         retval = 0;
 523                 }
 524                 break;
 525
 526         case OID_GEN_BROADCAST_FRAMES_RCV:
 527                 DBG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __FUNCTION__);
 528                 if (rndis_per_dev_params [configNr].stats) {
 529                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 530                                         .stats->rx_packets/42);
 531                         retval = 0;
 532                 }
 533                 break;
 534
 535         case OID_GEN_RCV_CRC_ERROR:
 536                 DBG("%s: OID_GEN_RCV_CRC_ERROR\n", __FUNCTION__);
 537                 if (rndis_per_dev_params [configNr].stats) {
 538                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 539                                         .stats->rx_crc_errors);
 540                         retval = 0;
 541                 }
 542                 break;
 543
 544         case OID_GEN_TRANSMIT_QUEUE_LENGTH:
 545                 DBG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __FUNCTION__);
 546                 *outbuf = __constant_cpu_to_le32 (0);
 547                 retval = 0;
 548                 break;
 549 #endif  /* RNDIS_OPTIONAL_STATS */
 550
 551         /* ieee802.3 OIDs (table 4-3) */
 552
 553         /* mandatory */
 554         case OID_802_3_PERMANENT_ADDRESS:
 555                 DBG("%s: OID_802_3_PERMANENT_ADDRESS\n", __FUNCTION__);
 556                 if (rndis_per_dev_params [configNr].dev) {
 557                         length = ETH_ALEN;
 558                         memcpy (outbuf,
 559                                 rndis_per_dev_params [configNr].host_mac,
 560                                 length);
 561                         retval = 0;
 562                 }
 563                 break;
 564
 565         /* mandatory */
 566         case OID_802_3_CURRENT_ADDRESS:
 567                 DBG("%s: OID_802_3_CURRENT_ADDRESS\n", __FUNCTION__);
 568                 if (rndis_per_dev_params [configNr].dev) {
 569                         length = ETH_ALEN;
 570                         memcpy (outbuf,
 571                                 rndis_per_dev_params [configNr].host_mac,
 572                                 length);
 573                         retval = 0;
 574                 }
 575                 break;
 576
 577         /* mandatory */
 578         case OID_802_3_MULTICAST_LIST:
 579                 DBG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 580                 /* Multicast base address only */
 581                 *outbuf = __constant_cpu_to_le32 (0xE0000000);
 582                 retval = 0;
 583                 break;
 584
 585         /* mandatory */
 586         case OID_802_3_MAXIMUM_LIST_SIZE:
 587                 DBG("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __FUNCTION__);
 588                 /* Multicast base address only */
 589                 *outbuf = __constant_cpu_to_le32 (1);
 590                 retval = 0;
 591                 break;
 592
 593         case OID_802_3_MAC_OPTIONS:
 594                 DBG("%s: OID_802_3_MAC_OPTIONS\n", __FUNCTION__);
 595                 break;
 596
 597         /* ieee802.3 statistics OIDs (table 4-4) */
 598
 599         /* mandatory */
 600         case OID_802_3_RCV_ERROR_ALIGNMENT:
 601                 DBG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __FUNCTION__);
 602                 if (rndis_per_dev_params [configNr].stats) {
 603                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 604                                         .stats->rx_frame_errors);
 605                         retval = 0;
 606                 }
 607                 break;
 608
 609         /* mandatory */
 610         case OID_802_3_XMIT_ONE_COLLISION:
 611                 DBG("%s: OID_802_3_XMIT_ONE_COLLISION\n", __FUNCTION__);
 612                 *outbuf = __constant_cpu_to_le32 (0);
 613                 retval = 0;
 614                 break;
 615
 616         /* mandatory */
 617         case OID_802_3_XMIT_MORE_COLLISIONS:
 618                 DBG("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __FUNCTION__);
 619                 *outbuf = __constant_cpu_to_le32 (0);
 620                 retval = 0;
 621                 break;
 622
 623 #ifdef  RNDIS_OPTIONAL_STATS
 624         case OID_802_3_XMIT_DEFERRED:
 625                 DBG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
 626                 /* TODO */
 627                 break;
 628
 629         case OID_802_3_XMIT_MAX_COLLISIONS:
 630                 DBG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
 631                 /* TODO */
 632                 break;
 633
 634         case OID_802_3_RCV_OVERRUN:
 635                 DBG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
 636                 /* TODO */
 637                 break;
 638
 639         case OID_802_3_XMIT_UNDERRUN:
 640                 DBG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
 641                 /* TODO */
 642                 break;
 643
 644         case OID_802_3_XMIT_HEARTBEAT_FAILURE:
 645                 DBG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
 646                 /* TODO */
 647                 break;
 648
 649         case OID_802_3_XMIT_TIMES_CRS_LOST:
 650                 DBG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
 651                 /* TODO */
 652                 break;
 653
 654         case OID_802_3_XMIT_LATE_COLLISIONS:
 655                 DBG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __FUNCTION__);
 656                 /* TODO */
 657                 break;
 658 #endif  /* RNDIS_OPTIONAL_STATS */
 659
 660 #ifdef  RNDIS_PM
 661         /* power management OIDs (table 4-5) */
 662         case OID_PNP_CAPABILITIES:
 663                 DBG("%s: OID_PNP_CAPABILITIES\n", __FUNCTION__);
 664
 665                 /* for now, no wakeup capabilities */
 666                 length = sizeof (struct NDIS_PNP_CAPABILITIES);
 667                 memset(outbuf, 0, length);
 668                 retval = 0;
 669                 break;
 670         case OID_PNP_QUERY_POWER:
 671                 DBG("%s: OID_PNP_QUERY_POWER D%d\n", __FUNCTION__,
 672                                 le32_to_cpu(get_unaligned((__le32 *)buf)) - 1);
 673                 /* only suspend is a real power state, and
 674                  * it can't be entered by OID_PNP_SET_POWER...
 675                  */
 676                 length = 0;
 677                 retval = 0;
 678                 break;
 679 #endif
 680
 681         default:
 682                 printk (KERN_WARNING "%s: query unknown OID 0x%08X\n",
 683                          __FUNCTION__, OID);
 684         }
 685         if (retval < 0)
 686                 length = 0;
 687
 688         resp->InformationBufferLength = cpu_to_le32 (length);
 689         r->length = length + sizeof *resp;
 690         resp->MessageLength = cpu_to_le32 (r->length);
 691         return retval;
 692 }
 693
 694 static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len,
 695                         rndis_resp_t *r)
 696 {
 697         rndis_set_cmplt_type            *resp;
 698         int                             i, retval = -ENOTSUPP;
 699         struct rndis_params             *params;
 700
 701         if (!r)
 702                 return -ENOMEM;
 703         resp = (rndis_set_cmplt_type *) r->buf;
 704         if (!resp)
 705                 return -ENOMEM;
 706
 707         if (buf_len && rndis_debug > 1) {
 708                 DBG("set OID %08x value, len %d:\n", OID, buf_len);
 709                 for (i = 0; i < buf_len; i += 16) {
 710                         DBG("%03d: %08x %08x %08x %08x\n", i,
 711                                 le32_to_cpu(get_unaligned((__le32 *)
 712                                         &buf[i])),
 713                                 le32_to_cpu(get_unaligned((__le32 *)
 714                                         &buf[i + 4])),
 715                                 le32_to_cpu(get_unaligned((__le32 *)
 716                                         &buf[i + 8])),
 717                                 le32_to_cpu(get_unaligned((__le32 *)
 718                                         &buf[i + 12])));
 719                 }
 720         }
 721
 722         params = &rndis_per_dev_params [configNr];
 723         switch (OID) {
 724         case OID_GEN_CURRENT_PACKET_FILTER:
 725
 726                 /* these NDIS_PACKET_TYPE_* bitflags are shared with
 727                  * cdc_filter; it's not RNDIS-specific
 728                  * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
 729                  *      PROMISCUOUS, DIRECTED,
 730                  *      MULTICAST, ALL_MULTICAST, BROADCAST
 731                  */
 732                 *params->filter = (u16) le32_to_cpu(get_unaligned(
 733                                 (__le32 *)buf));
 734                 DBG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
 735                         __FUNCTION__, *params->filter);
 736
 737                 /* this call has a significant side effect:  it's
 738                  * what makes the packet flow start and stop, like
 739                  * activating the CDC Ethernet altsetting.
 740                  */
 741 #ifdef  RNDIS_PM
 742 update_linkstate:
 743 #endif
 744                 retval = 0;
 745                 if (*params->filter) {
 746                         params->state = RNDIS_DATA_INITIALIZED;
 747                         netif_carrier_on(params->dev);
 748                         if (netif_running(params->dev))
 749                                 netif_wake_queue (params->dev);
 750                 } else {
 751                         params->state = RNDIS_INITIALIZED;
 752                         netif_carrier_off (params->dev);
 753                         netif_stop_queue (params->dev);
 754                 }
 755                 break;
 756
 757         case OID_802_3_MULTICAST_LIST:
 758                 /* I think we can ignore this */
 759                 DBG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 760                 retval = 0;
 761                 break;
 762 #if 0
 763         case OID_GEN_RNDIS_CONFIG_PARAMETER:
 764                 {
 765                 struct rndis_config_parameter   *param;
 766                 param = (struct rndis_config_parameter *) buf;
 767                 DBG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
 768                         __FUNCTION__,
 769                         min(cpu_to_le32(param->ParameterNameLength),80),
 770                         buf + param->ParameterNameOffset);
 771                 retval = 0;
 772                 }
 773                 break;
 774 #endif
 775
 776 #ifdef  RNDIS_PM
 777         case OID_PNP_SET_POWER:
 778                 /* The only real power state is USB suspend, and RNDIS requests
 779                  * can't enter it; this one isn't really about power.  After
 780                  * resuming, Windows forces a reset, and then SET_POWER D0.
 781                  * FIXME ... then things go batty; Windows wedges itself.
 782                  */
 783                 i = le32_to_cpu(get_unaligned((__le32 *)buf));
 784                 DBG("%s: OID_PNP_SET_POWER D%d\n", __FUNCTION__, i - 1);
 785                 switch (i) {
 786                 case NdisDeviceStateD0:
 787                         *params->filter = params->saved_filter;
 788                         goto update_linkstate;
 789                 case NdisDeviceStateD3:
 790                 case NdisDeviceStateD2:
 791                 case NdisDeviceStateD1:
 792                         params->saved_filter = *params->filter;
 793                         retval = 0;
 794                         break;
 795                 }
 796                 break;
 797
 798 #ifdef  RNDIS_WAKEUP
 799         // no wakeup support advertised, so wakeup OIDs always fail:
 800         //  - OID_PNP_ENABLE_WAKE_UP
 801         //  - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN
 802 #endif
 803
 804 #endif  /* RNDIS_PM */
 805
 806         default:
 807                 printk (KERN_WARNING "%s: set unknown OID 0x%08X, size %d\n",
 808                          __FUNCTION__, OID, buf_len);
 809         }
 810
 811         return retval;
 812 }
 813
 814 /*
 815  * Response Functions
 816  */
 817
 818 static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
 819 {
 820         rndis_init_cmplt_type   *resp;
 821         rndis_resp_t            *r;
 822
 823         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 824
 825         r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
 826         if (!r)
 827                 return -ENOMEM;
 828         resp = (rndis_init_cmplt_type *) r->buf;
 829
 830         resp->MessageType = __constant_cpu_to_le32 (
 831                         REMOTE_NDIS_INITIALIZE_CMPLT);
 832         resp->MessageLength = __constant_cpu_to_le32 (52);
 833         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 834         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 835         resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
 836         resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
 837         resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
 838         resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
 839         resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
 840         resp->MaxTransferSize = cpu_to_le32 (
 841                   rndis_per_dev_params [configNr].dev->mtu
 842                 + sizeof (struct ethhdr)
 843                 + sizeof (struct rndis_packet_msg_type)
 844                 + 22);
 845         resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
 846         resp->AFListOffset = __constant_cpu_to_le32 (0);
 847         resp->AFListSize = __constant_cpu_to_le32 (0);
 848
 849         if (rndis_per_dev_params [configNr].ack)
 850                 rndis_per_dev_params [configNr].ack (
 851                         rndis_per_dev_params [configNr].dev);
 852
 853         return 0;
 854 }
 855
 856 static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
 857 {
 858         rndis_query_cmplt_type *resp;
 859         rndis_resp_t            *r;
 860
 861         // DBG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
 862         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 863
 864         /*
 865          * we need more memory:
 866          * gen_ndis_query_resp expects enough space for
 867          * rndis_query_cmplt_type followed by data.
 868          * oid_supported_list is the largest data reply
 869          */
 870         r = rndis_add_response (configNr,
 871                 sizeof (oid_supported_list) + sizeof(rndis_query_cmplt_type));
 872         if (!r)
 873                 return -ENOMEM;
 874         resp = (rndis_query_cmplt_type *) r->buf;
 875
 876         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
 877         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 878
 879         if (gen_ndis_query_resp (configNr, le32_to_cpu (buf->OID),
 880                         le32_to_cpu(buf->InformationBufferOffset)
 881                                         + 8 + (u8 *) buf,
 882                         le32_to_cpu(buf->InformationBufferLength),
 883                         r)) {
 884                 /* OID not supported */
 885                 resp->Status = __constant_cpu_to_le32 (
 886                                 RNDIS_STATUS_NOT_SUPPORTED);
 887                 resp->MessageLength = __constant_cpu_to_le32 (sizeof *resp);
 888                 resp->InformationBufferLength = __constant_cpu_to_le32 (0);
 889                 resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
 890         } else
 891                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 892
 893         if (rndis_per_dev_params [configNr].ack)
 894                 rndis_per_dev_params [configNr].ack (
 895                         rndis_per_dev_params [configNr].dev);
 896         return 0;
 897 }
 898
 899 static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
 900 {
 901         u32                     BufLength, BufOffset;
 902         rndis_set_cmplt_type    *resp;
 903         rndis_resp_t            *r;
 904
 905         r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
 906         if (!r)
 907                 return -ENOMEM;
 908         resp = (rndis_set_cmplt_type *) r->buf;
 909
 910         BufLength = le32_to_cpu (buf->InformationBufferLength);
 911         BufOffset = le32_to_cpu (buf->InformationBufferOffset);
 912
 913 #ifdef  VERBOSE
 914         DBG("%s: Length: %d\n", __FUNCTION__, BufLength);
 915         DBG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
 916         DBG("%s: InfoBuffer: ", __FUNCTION__);
 917
 918         for (i = 0; i < BufLength; i++) {
 919                 DBG("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
 920         }
 921
 922         DBG("\n");
 923 #endif
 924
 925         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
 926         resp->MessageLength = __constant_cpu_to_le32 (16);
 927         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 928         if (gen_ndis_set_resp (configNr, le32_to_cpu (buf->OID),
 929                         ((u8 *) buf) + 8 + BufOffset, BufLength, r))
 930                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
 931         else
 932                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 933
 934         if (rndis_per_dev_params [configNr].ack)
 935                 rndis_per_dev_params [configNr].ack (
 936                         rndis_per_dev_params [configNr].dev);
 937
 938         return 0;
 939 }
 940
 941 static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
 942 {
 943         rndis_reset_cmplt_type  *resp;
 944         rndis_resp_t            *r;
 945
 946         r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type));
 947         if (!r)
 948                 return -ENOMEM;
 949         resp = (rndis_reset_cmplt_type *) r->buf;
 950
 951         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
 952         resp->MessageLength = __constant_cpu_to_le32 (16);
 953         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 954         /* resent information */
 955         resp->AddressingReset = __constant_cpu_to_le32 (1);
 956
 957         if (rndis_per_dev_params [configNr].ack)
 958                 rndis_per_dev_params [configNr].ack (
 959                         rndis_per_dev_params [configNr].dev);
 960
 961         return 0;
 962 }
 963
 964 static int rndis_keepalive_response (int configNr,
 965                                 rndis_keepalive_msg_type *buf)
 966 {
 967         rndis_keepalive_cmplt_type      *resp;
 968         rndis_resp_t                    *r;
 969
 970         /* host "should" check only in RNDIS_DATA_INITIALIZED state */
 971
 972         r = rndis_add_response (configNr, sizeof (rndis_keepalive_cmplt_type));
 973         if (!r)
 974                 return -ENOMEM;
 975         resp = (rndis_keepalive_cmplt_type *) r->buf;
 976
 977         resp->MessageType = __constant_cpu_to_le32 (
 978                         REMOTE_NDIS_KEEPALIVE_CMPLT);
 979         resp->MessageLength = __constant_cpu_to_le32 (16);
 980         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 981         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 982
 983         if (rndis_per_dev_params [configNr].ack)
 984                 rndis_per_dev_params [configNr].ack (
 985                         rndis_per_dev_params [configNr].dev);
 986
 987         return 0;
 988 }
 989
 990
 991 /*
 992  * Device to Host Comunication
 993  */
 994 static int rndis_indicate_status_msg (int configNr, u32 status)
 995 {
 996         rndis_indicate_status_msg_type  *resp;
 997         rndis_resp_t                    *r;
 998
 999         if (rndis_per_dev_params [configNr].state == RNDIS_UNINITIALIZED)
1000                 return -ENOTSUPP;
1001
1002         r = rndis_add_response (configNr,
1003                                 sizeof (rndis_indicate_status_msg_type));
1004         if (!r)
1005                 return -ENOMEM;
1006         resp = (rndis_indicate_status_msg_type *) r->buf;
1007
1008         resp->MessageType = __constant_cpu_to_le32 (
1009                         REMOTE_NDIS_INDICATE_STATUS_MSG);
1010         resp->MessageLength = __constant_cpu_to_le32 (20);
1011         resp->Status = cpu_to_le32 (status);
1012         resp->StatusBufferLength = __constant_cpu_to_le32 (0);
1013         resp->StatusBufferOffset = __constant_cpu_to_le32 (0);
1014
1015         if (rndis_per_dev_params [configNr].ack)
1016                 rndis_per_dev_params [configNr].ack (
1017                         rndis_per_dev_params [configNr].dev);
1018         return 0;
1019 }
1020
1021 int rndis_signal_connect (int configNr)
1022 {
1023         rndis_per_dev_params [configNr].media_state
1024                         = NDIS_MEDIA_STATE_CONNECTED;
1025         return rndis_indicate_status_msg (configNr,
1026                                           RNDIS_STATUS_MEDIA_CONNECT);
1027 }
1028
1029 int rndis_signal_disconnect (int configNr)
1030 {
1031         rndis_per_dev_params [configNr].media_state
1032                         = NDIS_MEDIA_STATE_DISCONNECTED;
1033         return rndis_indicate_status_msg (configNr,
1034                                           RNDIS_STATUS_MEDIA_DISCONNECT);
1035 }
1036
1037 void rndis_uninit (int configNr)
1038 {
1039         u8 *buf;
1040         u32 length;
1041
1042         if (configNr >= RNDIS_MAX_CONFIGS)
1043                 return;
1044         rndis_per_dev_params [configNr].used = 0;
1045         rndis_per_dev_params [configNr].state = RNDIS_UNINITIALIZED;
1046
1047         /* drain the response queue */
1048         while ((buf = rndis_get_next_response(configNr, &length)))
1049                 rndis_free_response(configNr, buf);
1050 }
1051
1052 void rndis_set_host_mac (int configNr, const u8 *addr)
1053 {
1054         rndis_per_dev_params [configNr].host_mac = addr;
1055 }
1056
1057 /*
1058  * Message Parser
1059  */
1060 int rndis_msg_parser (u8 configNr, u8 *buf)
1061 {
1062         u32 MsgType, MsgLength;
1063         __le32 *tmp;
1064         struct rndis_params             *params;
1065
1066         if (!buf)
1067                 return -ENOMEM;
1068
1069         tmp = (__le32 *) buf;
1070         MsgType   = le32_to_cpu(get_unaligned(tmp++));
1071         MsgLength = le32_to_cpu(get_unaligned(tmp++));
1072
1073         if (configNr >= RNDIS_MAX_CONFIGS)
1074                 return -ENOTSUPP;
1075         params = &rndis_per_dev_params [configNr];
1076
1077         /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
1078          * rx/tx statistics and link status, in addition to KEEPALIVE traffic
1079          * and normal HC level polling to see if there's any IN traffic.
1080          */
1081
1082         /* For USB: responses may take up to 10 seconds */
1083         switch (MsgType) {
1084         case REMOTE_NDIS_INITIALIZE_MSG:
1085                 DBG("%s: REMOTE_NDIS_INITIALIZE_MSG\n",
1086                         __FUNCTION__ );
1087                 params->state = RNDIS_INITIALIZED;
1088                 return  rndis_init_response (configNr,
1089                                         (rndis_init_msg_type *) buf);
1090
1091         case REMOTE_NDIS_HALT_MSG:
1092                 DBG("%s: REMOTE_NDIS_HALT_MSG\n",
1093                         __FUNCTION__ );
1094                 params->state = RNDIS_UNINITIALIZED;
1095                 if (params->dev) {
1096                         netif_carrier_off (params->dev);
1097                         netif_stop_queue (params->dev);
1098                 }
1099                 return 0;
1100
1101         case REMOTE_NDIS_QUERY_MSG:
1102                 return rndis_query_response (configNr,
1103                                         (rndis_query_msg_type *) buf);
1104
1105         case REMOTE_NDIS_SET_MSG:
1106                 return rndis_set_response (configNr,
1107                                         (rndis_set_msg_type *) buf);
1108
1109         case REMOTE_NDIS_RESET_MSG:
1110                 DBG("%s: REMOTE_NDIS_RESET_MSG\n",
1111                         __FUNCTION__ );
1112                 return rndis_reset_response (configNr,
1113                                         (rndis_reset_msg_type *) buf);
1114
1115         case REMOTE_NDIS_KEEPALIVE_MSG:
1116                 /* For USB: host does this every 5 seconds */
1117                 if (rndis_debug > 1)
1118                         DBG("%s: REMOTE_NDIS_KEEPALIVE_MSG\n",
1119                                 __FUNCTION__ );
1120                 return rndis_keepalive_response (configNr,
1121                                                  (rndis_keepalive_msg_type *)
1122                                                  buf);
1123
1124         default:
1125                 /* At least Windows XP emits some undefined RNDIS messages.
1126                  * In one case those messages seemed to relate to the host
1127                  * suspending itself.
1128                  */
1129                 printk (KERN_WARNING
1130                         "%s: unknown RNDIS message 0x%08X len %d\n",
1131                         __FUNCTION__ , MsgType, MsgLength);
1132                 {
1133                         unsigned i;
1134                         for (i = 0; i < MsgLength; i += 16) {
1135                                 DBG("%03d: "
1136                                         " %02x %02x %02x %02x"
1137                                         " %02x %02x %02x %02x"
1138                                         " %02x %02x %02x %02x"
1139                                         " %02x %02x %02x %02x"
1140                                         "\n",
1141                                         i,
1142                                         buf[i], buf [i+1],
1143                                                 buf[i+2], buf[i+3],
1144                                         buf[i+4], buf [i+5],
1145                                                 buf[i+6], buf[i+7],
1146                                         buf[i+8], buf [i+9],
1147                                                 buf[i+10], buf[i+11],
1148                                         buf[i+12], buf [i+13],
1149                                                 buf[i+14], buf[i+15]);
1150                         }
1151                 }
1152                 break;
1153         }
1154
1155         return -ENOTSUPP;
1156 }
1157
1158 int rndis_register (int (* rndis_control_ack) (struct net_device *))
1159 {
1160         u8 i;
1161
1162         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1163                 if (!rndis_per_dev_params [i].used) {
1164                         rndis_per_dev_params [i].used = 1;
1165                         rndis_per_dev_params [i].ack = rndis_control_ack;
1166                         DBG("%s: configNr = %d\n", __FUNCTION__, i);
1167                         return i;
1168                 }
1169         }
1170         DBG("failed\n");
1171
1172         return -1;
1173 }
1174
1175 void rndis_deregister (int configNr)
1176 {
1177         DBG("%s: \n", __FUNCTION__ );
1178
1179         if (configNr >= RNDIS_MAX_CONFIGS) return;
1180         rndis_per_dev_params [configNr].used = 0;
1181
1182         return;
1183 }
1184
1185 int rndis_set_param_dev (u8 configNr, struct net_device *dev,
1186                          struct net_device_stats *stats,
1187                          u16 *cdc_filter)
1188 {
1189         DBG("%s:\n", __FUNCTION__ );
1190         if (!dev || !stats) return -1;
1191         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1192
1193         rndis_per_dev_params [configNr].dev = dev;
1194         rndis_per_dev_params [configNr].stats = stats;
1195         rndis_per_dev_params [configNr].filter = cdc_filter;
1196
1197         return 0;
1198 }
1199
1200 int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr)
1201 {
1202         DBG("%s:\n", __FUNCTION__ );
1203         if (!vendorDescr) return -1;
1204         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1205
1206         rndis_per_dev_params [configNr].vendorID = vendorID;
1207         rndis_per_dev_params [configNr].vendorDescr = vendorDescr;
1208
1209         return 0;
1210 }
1211
1212 int rndis_set_param_medium (u8 configNr, u32 medium, u32 speed)
1213 {
1214         DBG("%s: %u %u\n", __FUNCTION__, medium, speed);
1215         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1216
1217         rndis_per_dev_params [configNr].medium = medium;
1218         rndis_per_dev_params [configNr].speed = speed;
1219
1220         return 0;
1221 }
1222
1223 void rndis_add_hdr (struct sk_buff *skb)
1224 {
1225         struct rndis_packet_msg_type    *header;
1226
1227         if (!skb)
1228                 return;
1229         header = (void *) skb_push (skb, sizeof *header);
1230         memset (header, 0, sizeof *header);
1231         header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
1232         header->MessageLength = cpu_to_le32(skb->len);
1233         header->DataOffset = __constant_cpu_to_le32 (36);
1234         header->DataLength = cpu_to_le32(skb->len - sizeof *header);
1235 }
1236
1237 void rndis_free_response (int configNr, u8 *buf)
1238 {
1239         rndis_resp_t            *r;
1240         struct list_head        *act, *tmp;
1241
1242         list_for_each_safe (act, tmp,
1243                         &(rndis_per_dev_params [configNr].resp_queue))
1244         {
1245                 r = list_entry (act, rndis_resp_t, list);
1246                 if (r && r->buf == buf) {
1247                         list_del (&r->list);
1248                         kfree (r);
1249                 }
1250         }
1251 }
1252
1253 u8 *rndis_get_next_response (int configNr, u32 *length)
1254 {
1255         rndis_resp_t            *r;
1256         struct list_head        *act, *tmp;
1257
1258         if (!length) return NULL;
1259
1260         list_for_each_safe (act, tmp,
1261                         &(rndis_per_dev_params [configNr].resp_queue))
1262         {
1263                 r = list_entry (act, rndis_resp_t, list);
1264                 if (!r->send) {
1265                         r->send = 1;
1266                         *length = r->length;
1267                         return r->buf;
1268                 }
1269         }
1270
1271         return NULL;
1272 }
1273
1274 static rndis_resp_t *rndis_add_response (int configNr, u32 length)
1275 {
1276         rndis_resp_t    *r;
1277
1278         /* NOTE:  this gets copied into ether.c USB_BUFSIZ bytes ... */
1279         r = kmalloc (sizeof (rndis_resp_t) + length, GFP_ATOMIC);
1280         if (!r) return NULL;
1281
1282         r->buf = (u8 *) (r + 1);
1283         r->length = length;
1284         r->send = 0;
1285
1286         list_add_tail (&r->list,
1287                 &(rndis_per_dev_params [configNr].resp_queue));
1288         return r;
1289 }
1290
1291 int rndis_rm_hdr(struct sk_buff *skb)
1292 {
1293         /* tmp points to a struct rndis_packet_msg_type */
1294         __le32          *tmp = (void *) skb->data;
1295
1296         /* MessageType, MessageLength */
1297         if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
1298                         != get_unaligned(tmp++))
1299                 return -EINVAL;
1300         tmp++;
1301
1302         /* DataOffset, DataLength */
1303         if (!skb_pull(skb, le32_to_cpu(get_unaligned(tmp++))
1304                         + 8 /* offset of DataOffset */))
1305                 return -EOVERFLOW;
1306         skb_trim(skb, le32_to_cpu(get_unaligned(tmp++)));
1307
1308         return 0;
1309 }
1310
1311 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1312
1313 static int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof,
1314                 void *data)
1315 {
1316         char *out = page;
1317         int len;
1318         rndis_params *param = (rndis_params *) data;
1319
1320         out += snprintf (out, count,
1321                          "Config Nr. %d\n"
1322                          "used      : %s\n"
1323                          "state     : %s\n"
1324                          "medium    : 0x%08X\n"
1325                          "speed     : %d\n"
1326                          "cable     : %s\n"
1327                          "vendor ID : 0x%08X\n"
1328                          "vendor    : %s\n",
1329                          param->confignr, (param->used) ? "y" : "n",
1330                          ({ char *s = "?";
1331                          switch (param->state) {
1332                          case RNDIS_UNINITIALIZED:
1333                                 s = "RNDIS_UNINITIALIZED"; break;
1334                          case RNDIS_INITIALIZED:
1335                                 s = "RNDIS_INITIALIZED"; break;
1336                          case RNDIS_DATA_INITIALIZED:
1337                                 s = "RNDIS_DATA_INITIALIZED"; break;
1338                         }; s; }),
1339                          param->medium,
1340                          (param->media_state) ? 0 : param->speed*100,
1341                          (param->media_state) ? "disconnected" : "connected",
1342                          param->vendorID, param->vendorDescr);
1343
1344         len = out - page;
1345         len -= off;
1346
1347         if (len < count) {
1348                 *eof = 1;
1349                 if (len <= 0)
1350                         return 0;
1351         } else
1352                 len = count;
1353
1354         *start = page + off;
1355         return len;
1356 }
1357
1358 static int rndis_proc_write (struct file *file, const char __user *buffer,
1359                 unsigned long count, void *data)
1360 {
1361         rndis_params *p = data;
1362         u32 speed = 0;
1363         int i, fl_speed = 0;
1364
1365         for (i = 0; i < count; i++) {
1366                 char c;
1367                 if (get_user(c, buffer))
1368                         return -EFAULT;
1369                 switch (c) {
1370                 case '0':
1371                 case '1':
1372                 case '2':
1373                 case '3':
1374                 case '4':
1375                 case '5':
1376                 case '6':
1377                 case '7':
1378                 case '8':
1379                 case '9':
1380                         fl_speed = 1;
1381                         speed = speed*10 + c - '0';
1382                         break;
1383                 case 'C':
1384                 case 'c':
1385                         rndis_signal_connect (p->confignr);
1386                         break;
1387                 case 'D':
1388                 case 'd':
1389                         rndis_signal_disconnect(p->confignr);
1390                         break;
1391                 default:
1392                         if (fl_speed) p->speed = speed;
1393                         else DBG("%c is not valid\n", c);
1394                         break;
1395                 }
1396
1397                 buffer++;
1398         }
1399
1400         return count;
1401 }
1402
1403 #define NAME_TEMPLATE   "driver/rndis-%03d"
1404
1405 static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
1406
1407 #endif  /* CONFIG_USB_GADGET_DEBUG_FILES */
1408
1409
1410 int __devinit rndis_init (void)
1411 {
1412         u8 i;
1413
1414         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1415 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1416                 char name [20];
1417
1418                 sprintf (name, NAME_TEMPLATE, i);
1419                 if (!(rndis_connect_state [i]
1420                                 = create_proc_entry (name, 0660, NULL)))
1421                 {
1422                         DBG("%s :remove entries", __FUNCTION__);
1423                         while (i) {
1424                                 sprintf (name, NAME_TEMPLATE, --i);
1425                                 remove_proc_entry (name, NULL);
1426                         }
1427                         DBG("\n");
1428                         return -EIO;
1429                 }
1430
1431                 rndis_connect_state [i]->write_proc = rndis_proc_write;
1432                 rndis_connect_state [i]->read_proc = rndis_proc_read;
1433                 rndis_connect_state [i]->data = (void *)
1434                                 (rndis_per_dev_params + i);
1435 #endif
1436                 rndis_per_dev_params [i].confignr = i;
1437                 rndis_per_dev_params [i].used = 0;
1438                 rndis_per_dev_params [i].state = RNDIS_UNINITIALIZED;
1439                 rndis_per_dev_params [i].media_state
1440                                 = NDIS_MEDIA_STATE_DISCONNECTED;
1441                 INIT_LIST_HEAD (&(rndis_per_dev_params [i].resp_queue));
1442         }
1443
1444         return 0;
1445 }
1446
1447 void rndis_exit (void)
1448 {
1449 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1450         u8 i;
1451         char name [20];
1452
1453         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1454                 sprintf (name, NAME_TEMPLATE, i);
1455                 remove_proc_entry (name, NULL);
1456         }
1457 #endif
1458 }
1459