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 DEBUG(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 DEBUG(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                 DEBUG("query OID %08x value, len %d:\n", OID, buf_len);
 187                 for (i = 0; i < buf_len; i += 16) {
 188                         DEBUG ("%03d: %08x %08x %08x %08x\n", i,
 189                                 le32_to_cpup((__le32 *)&buf[i]),
 190                                 le32_to_cpup((__le32 *)&buf[i + 4]),
 191                                 le32_to_cpup((__le32 *)&buf[i + 8]),
 192                                 le32_to_cpup((__le32 *)&buf[i + 12]));
 193                 }
 194         }
 195
 196         /* response goes here, right after the header */
 197         outbuf = (__le32 *) &resp[1];
 198         resp->InformationBufferOffset = __constant_cpu_to_le32 (16);
 199
 200         switch (OID) {
 201
 202         /* general oids (table 4-1) */
 203
 204         /* mandatory */
 205         case OID_GEN_SUPPORTED_LIST:
 206                 DEBUG ("%s: OID_GEN_SUPPORTED_LIST\n", __FUNCTION__);
 207                 length = sizeof (oid_supported_list);
 208                 count  = length / sizeof (u32);
 209                 for (i = 0; i < count; i++)
 210                         outbuf[i] = cpu_to_le32 (oid_supported_list[i]);
 211                 retval = 0;
 212                 break;
 213
 214         /* mandatory */
 215         case OID_GEN_HARDWARE_STATUS:
 216                 DEBUG("%s: OID_GEN_HARDWARE_STATUS\n", __FUNCTION__);
 217                 /* Bogus question!
 218                  * Hardware must be ready to receive high level protocols.
 219                  * BTW:
 220                  * reddite ergo quae sunt Caesaris Caesari
 221                  * et quae sunt Dei Deo!
 222                  */
 223                 *outbuf = __constant_cpu_to_le32 (0);
 224                 retval = 0;
 225                 break;
 226
 227         /* mandatory */
 228         case OID_GEN_MEDIA_SUPPORTED:
 229                 DEBUG("%s: OID_GEN_MEDIA_SUPPORTED\n", __FUNCTION__);
 230                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
 231                 retval = 0;
 232                 break;
 233
 234         /* mandatory */
 235         case OID_GEN_MEDIA_IN_USE:
 236                 DEBUG("%s: OID_GEN_MEDIA_IN_USE\n", __FUNCTION__);
 237                 /* one medium, one transport... (maybe you do it better) */
 238                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
 239                 retval = 0;
 240                 break;
 241
 242         /* mandatory */
 243         case OID_GEN_MAXIMUM_FRAME_SIZE:
 244                 DEBUG("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __FUNCTION__);
 245                 if (rndis_per_dev_params [configNr].dev) {
 246                         *outbuf = cpu_to_le32 (
 247                                 rndis_per_dev_params [configNr].dev->mtu);
 248                         retval = 0;
 249                 }
 250                 break;
 251
 252         /* mandatory */
 253         case OID_GEN_LINK_SPEED:
 254                 if (rndis_debug > 1)
 255                         DEBUG("%s: OID_GEN_LINK_SPEED\n", __FUNCTION__);
 256                 if (rndis_per_dev_params [configNr].media_state
 257                                 == NDIS_MEDIA_STATE_DISCONNECTED)
 258                         *outbuf = __constant_cpu_to_le32 (0);
 259                 else
 260                         *outbuf = cpu_to_le32 (
 261                                 rndis_per_dev_params [configNr].speed);
 262                 retval = 0;
 263                 break;
 264
 265         /* mandatory */
 266         case OID_GEN_TRANSMIT_BLOCK_SIZE:
 267                 DEBUG("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __FUNCTION__);
 268                 if (rndis_per_dev_params [configNr].dev) {
 269                         *outbuf = cpu_to_le32 (
 270                                 rndis_per_dev_params [configNr].dev->mtu);
 271                         retval = 0;
 272                 }
 273                 break;
 274
 275         /* mandatory */
 276         case OID_GEN_RECEIVE_BLOCK_SIZE:
 277                 DEBUG("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __FUNCTION__);
 278                 if (rndis_per_dev_params [configNr].dev) {
 279                         *outbuf = cpu_to_le32 (
 280                                 rndis_per_dev_params [configNr].dev->mtu);
 281                         retval = 0;
 282                 }
 283                 break;
 284
 285         /* mandatory */
 286         case OID_GEN_VENDOR_ID:
 287                 DEBUG("%s: OID_GEN_VENDOR_ID\n", __FUNCTION__);
 288                 *outbuf = cpu_to_le32 (
 289                         rndis_per_dev_params [configNr].vendorID);
 290                 retval = 0;
 291                 break;
 292
 293         /* mandatory */
 294         case OID_GEN_VENDOR_DESCRIPTION:
 295                 DEBUG("%s: OID_GEN_VENDOR_DESCRIPTION\n", __FUNCTION__);
 296                 length = strlen (rndis_per_dev_params [configNr].vendorDescr);
 297                 memcpy (outbuf,
 298                         rndis_per_dev_params [configNr].vendorDescr, length);
 299                 retval = 0;
 300                 break;
 301
 302         case OID_GEN_VENDOR_DRIVER_VERSION:
 303                 DEBUG("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __FUNCTION__);
 304                 /* Created as LE */
 305                 *outbuf = rndis_driver_version;
 306                 retval = 0;
 307                 break;
 308
 309         /* mandatory */
 310         case OID_GEN_CURRENT_PACKET_FILTER:
 311                 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __FUNCTION__);
 312                 *outbuf = cpu_to_le32 (*rndis_per_dev_params[configNr].filter);
 313                 retval = 0;
 314                 break;
 315
 316         /* mandatory */
 317         case OID_GEN_MAXIMUM_TOTAL_SIZE:
 318                 DEBUG("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __FUNCTION__);
 319                 *outbuf = __constant_cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
 320                 retval = 0;
 321                 break;
 322
 323         /* mandatory */
 324         case OID_GEN_MEDIA_CONNECT_STATUS:
 325                 if (rndis_debug > 1)
 326                         DEBUG("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __FUNCTION__);
 327                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 328                                                 .media_state);
 329                 retval = 0;
 330                 break;
 331
 332         case OID_GEN_PHYSICAL_MEDIUM:
 333                 DEBUG("%s: OID_GEN_PHYSICAL_MEDIUM\n", __FUNCTION__);
 334                 *outbuf = __constant_cpu_to_le32 (0);
 335                 retval = 0;
 336                 break;
 337
 338         /* The RNDIS specification is incomplete/wrong.   Some versions
 339          * of MS-Windows expect OIDs that aren't specified there.  Other
 340          * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
 341          */
 342         case OID_GEN_MAC_OPTIONS:               /* from WinME */
 343                 DEBUG("%s: OID_GEN_MAC_OPTIONS\n", __FUNCTION__);
 344                 *outbuf = __constant_cpu_to_le32(
 345                           NDIS_MAC_OPTION_RECEIVE_SERIALIZED
 346                         | NDIS_MAC_OPTION_FULL_DUPLEX);
 347                 retval = 0;
 348                 break;
 349
 350         /* statistics OIDs (table 4-2) */
 351
 352         /* mandatory */
 353         case OID_GEN_XMIT_OK:
 354                 if (rndis_debug > 1)
 355                         DEBUG("%s: OID_GEN_XMIT_OK\n", __FUNCTION__);
 356                 if (rndis_per_dev_params [configNr].stats) {
 357                         *outbuf = cpu_to_le32 (
 358                             rndis_per_dev_params [configNr].stats->tx_packets -
 359                             rndis_per_dev_params [configNr].stats->tx_errors -
 360                             rndis_per_dev_params [configNr].stats->tx_dropped);
 361                         retval = 0;
 362                 }
 363                 break;
 364
 365         /* mandatory */
 366         case OID_GEN_RCV_OK:
 367                 if (rndis_debug > 1)
 368                         DEBUG("%s: OID_GEN_RCV_OK\n", __FUNCTION__);
 369                 if (rndis_per_dev_params [configNr].stats) {
 370                         *outbuf = cpu_to_le32 (
 371                             rndis_per_dev_params [configNr].stats->rx_packets -
 372                             rndis_per_dev_params [configNr].stats->rx_errors -
 373                             rndis_per_dev_params [configNr].stats->rx_dropped);
 374                         retval = 0;
 375                 }
 376                 break;
 377
 378         /* mandatory */
 379         case OID_GEN_XMIT_ERROR:
 380                 if (rndis_debug > 1)
 381                         DEBUG("%s: OID_GEN_XMIT_ERROR\n", __FUNCTION__);
 382                 if (rndis_per_dev_params [configNr].stats) {
 383                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 384                                         .stats->tx_errors);
 385                         retval = 0;
 386                 }
 387                 break;
 388
 389         /* mandatory */
 390         case OID_GEN_RCV_ERROR:
 391                 if (rndis_debug > 1)
 392                         DEBUG("%s: OID_GEN_RCV_ERROR\n", __FUNCTION__);
 393                 if (rndis_per_dev_params [configNr].stats) {
 394                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 395                                         .stats->rx_errors);
 396                         retval = 0;
 397                 }
 398                 break;
 399
 400         /* mandatory */
 401         case OID_GEN_RCV_NO_BUFFER:
 402                 DEBUG("%s: OID_GEN_RCV_NO_BUFFER\n", __FUNCTION__);
 403                 if (rndis_per_dev_params [configNr].stats) {
 404                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 405                                         .stats->rx_dropped);
 406                         retval = 0;
 407                 }
 408                 break;
 409
 410 #ifdef  RNDIS_OPTIONAL_STATS
 411         case OID_GEN_DIRECTED_BYTES_XMIT:
 412                 DEBUG("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __FUNCTION__);
 413                 /*
 414                  * Aunt Tilly's size of shoes
 415                  * minus antarctica count of penguins
 416                  * divided by weight of Alpha Centauri
 417                  */
 418                 if (rndis_per_dev_params [configNr].stats) {
 419                         *outbuf = cpu_to_le32 (
 420                                 (rndis_per_dev_params [configNr]
 421                                         .stats->tx_packets -
 422                                  rndis_per_dev_params [configNr]
 423                                          .stats->tx_errors -
 424                                  rndis_per_dev_params [configNr]
 425                                          .stats->tx_dropped)
 426                                 * 123);
 427                         retval = 0;
 428                 }
 429                 break;
 430
 431         case OID_GEN_DIRECTED_FRAMES_XMIT:
 432                 DEBUG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __FUNCTION__);
 433                 /* dito */
 434                 if (rndis_per_dev_params [configNr].stats) {
 435                         *outbuf = cpu_to_le32 (
 436                                 (rndis_per_dev_params [configNr]
 437                                         .stats->tx_packets -
 438                                  rndis_per_dev_params [configNr]
 439                                          .stats->tx_errors -
 440                                  rndis_per_dev_params [configNr]
 441                                          .stats->tx_dropped)
 442                                 / 123);
 443                         retval = 0;
 444                 }
 445                 break;
 446
 447         case OID_GEN_MULTICAST_BYTES_XMIT:
 448                 DEBUG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __FUNCTION__);
 449                 if (rndis_per_dev_params [configNr].stats) {
 450                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 451                                         .stats->multicast*1234);
 452                         retval = 0;
 453                 }
 454                 break;
 455
 456         case OID_GEN_MULTICAST_FRAMES_XMIT:
 457                 DEBUG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __FUNCTION__);
 458                 if (rndis_per_dev_params [configNr].stats) {
 459                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 460                                         .stats->multicast);
 461                         retval = 0;
 462                 }
 463                 break;
 464
 465         case OID_GEN_BROADCAST_BYTES_XMIT:
 466                 DEBUG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __FUNCTION__);
 467                 if (rndis_per_dev_params [configNr].stats) {
 468                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 469                                         .stats->tx_packets/42*255);
 470                         retval = 0;
 471                 }
 472                 break;
 473
 474         case OID_GEN_BROADCAST_FRAMES_XMIT:
 475                 DEBUG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __FUNCTION__);
 476                 if (rndis_per_dev_params [configNr].stats) {
 477                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 478                                         .stats->tx_packets/42);
 479                         retval = 0;
 480                 }
 481                 break;
 482
 483         case OID_GEN_DIRECTED_BYTES_RCV:
 484                 DEBUG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __FUNCTION__);
 485                 *outbuf = __constant_cpu_to_le32 (0);
 486                 retval = 0;
 487                 break;
 488
 489         case OID_GEN_DIRECTED_FRAMES_RCV:
 490                 DEBUG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __FUNCTION__);
 491                 *outbuf = __constant_cpu_to_le32 (0);
 492                 retval = 0;
 493                 break;
 494
 495         case OID_GEN_MULTICAST_BYTES_RCV:
 496                 DEBUG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __FUNCTION__);
 497                 if (rndis_per_dev_params [configNr].stats) {
 498                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 499                                         .stats->multicast * 1111);
 500                         retval = 0;
 501                 }
 502                 break;
 503
 504         case OID_GEN_MULTICAST_FRAMES_RCV:
 505                 DEBUG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __FUNCTION__);
 506                 if (rndis_per_dev_params [configNr].stats) {
 507                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 508                                         .stats->multicast);
 509                         retval = 0;
 510                 }
 511                 break;
 512
 513         case OID_GEN_BROADCAST_BYTES_RCV:
 514                 DEBUG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __FUNCTION__);
 515                 if (rndis_per_dev_params [configNr].stats) {
 516                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 517                                         .stats->rx_packets/42*255);
 518                         retval = 0;
 519                 }
 520                 break;
 521
 522         case OID_GEN_BROADCAST_FRAMES_RCV:
 523                 DEBUG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __FUNCTION__);
 524                 if (rndis_per_dev_params [configNr].stats) {
 525                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 526                                         .stats->rx_packets/42);
 527                         retval = 0;
 528                 }
 529                 break;
 530
 531         case OID_GEN_RCV_CRC_ERROR:
 532                 DEBUG("%s: OID_GEN_RCV_CRC_ERROR\n", __FUNCTION__);
 533                 if (rndis_per_dev_params [configNr].stats) {
 534                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 535                                         .stats->rx_crc_errors);
 536                         retval = 0;
 537                 }
 538                 break;
 539
 540         case OID_GEN_TRANSMIT_QUEUE_LENGTH:
 541                 DEBUG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __FUNCTION__);
 542                 *outbuf = __constant_cpu_to_le32 (0);
 543                 retval = 0;
 544                 break;
 545 #endif  /* RNDIS_OPTIONAL_STATS */
 546
 547         /* ieee802.3 OIDs (table 4-3) */
 548
 549         /* mandatory */
 550         case OID_802_3_PERMANENT_ADDRESS:
 551                 DEBUG("%s: OID_802_3_PERMANENT_ADDRESS\n", __FUNCTION__);
 552                 if (rndis_per_dev_params [configNr].dev) {
 553                         length = ETH_ALEN;
 554                         memcpy (outbuf,
 555                                 rndis_per_dev_params [configNr].host_mac,
 556                                 length);
 557                         retval = 0;
 558                 }
 559                 break;
 560
 561         /* mandatory */
 562         case OID_802_3_CURRENT_ADDRESS:
 563                 DEBUG("%s: OID_802_3_CURRENT_ADDRESS\n", __FUNCTION__);
 564                 if (rndis_per_dev_params [configNr].dev) {
 565                         length = ETH_ALEN;
 566                         memcpy (outbuf,
 567                                 rndis_per_dev_params [configNr].host_mac,
 568                                 length);
 569                         retval = 0;
 570                 }
 571                 break;
 572
 573         /* mandatory */
 574         case OID_802_3_MULTICAST_LIST:
 575                 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 576                 /* Multicast base address only */
 577                 *outbuf = __constant_cpu_to_le32 (0xE0000000);
 578                 retval = 0;
 579                 break;
 580
 581         /* mandatory */
 582         case OID_802_3_MAXIMUM_LIST_SIZE:
 583                 DEBUG("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __FUNCTION__);
 584                 /* Multicast base address only */
 585                 *outbuf = __constant_cpu_to_le32 (1);
 586                 retval = 0;
 587                 break;
 588
 589         case OID_802_3_MAC_OPTIONS:
 590                 DEBUG("%s: OID_802_3_MAC_OPTIONS\n", __FUNCTION__);
 591                 break;
 592
 593         /* ieee802.3 statistics OIDs (table 4-4) */
 594
 595         /* mandatory */
 596         case OID_802_3_RCV_ERROR_ALIGNMENT:
 597                 DEBUG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __FUNCTION__);
 598                 if (rndis_per_dev_params [configNr].stats) {
 599                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 600                                         .stats->rx_frame_errors);
 601                         retval = 0;
 602                 }
 603                 break;
 604
 605         /* mandatory */
 606         case OID_802_3_XMIT_ONE_COLLISION:
 607                 DEBUG("%s: OID_802_3_XMIT_ONE_COLLISION\n", __FUNCTION__);
 608                 *outbuf = __constant_cpu_to_le32 (0);
 609                 retval = 0;
 610                 break;
 611
 612         /* mandatory */
 613         case OID_802_3_XMIT_MORE_COLLISIONS:
 614                 DEBUG("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __FUNCTION__);
 615                 *outbuf = __constant_cpu_to_le32 (0);
 616                 retval = 0;
 617                 break;
 618
 619 #ifdef  RNDIS_OPTIONAL_STATS
 620         case OID_802_3_XMIT_DEFERRED:
 621                 DEBUG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
 622                 /* TODO */
 623                 break;
 624
 625         case OID_802_3_XMIT_MAX_COLLISIONS:
 626                 DEBUG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
 627                 /* TODO */
 628                 break;
 629
 630         case OID_802_3_RCV_OVERRUN:
 631                 DEBUG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
 632                 /* TODO */
 633                 break;
 634
 635         case OID_802_3_XMIT_UNDERRUN:
 636                 DEBUG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
 637                 /* TODO */
 638                 break;
 639
 640         case OID_802_3_XMIT_HEARTBEAT_FAILURE:
 641                 DEBUG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
 642                 /* TODO */
 643                 break;
 644
 645         case OID_802_3_XMIT_TIMES_CRS_LOST:
 646                 DEBUG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
 647                 /* TODO */
 648                 break;
 649
 650         case OID_802_3_XMIT_LATE_COLLISIONS:
 651                 DEBUG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __FUNCTION__);
 652                 /* TODO */
 653                 break;
 654 #endif  /* RNDIS_OPTIONAL_STATS */
 655
 656 #ifdef  RNDIS_PM
 657         /* power management OIDs (table 4-5) */
 658         case OID_PNP_CAPABILITIES:
 659                 DEBUG("%s: OID_PNP_CAPABILITIES\n", __FUNCTION__);
 660
 661                 /* for now, no wakeup capabilities */
 662                 length = sizeof (struct NDIS_PNP_CAPABILITIES);
 663                 memset(outbuf, 0, length);
 664                 retval = 0;
 665                 break;
 666         case OID_PNP_QUERY_POWER:
 667                 DEBUG("%s: OID_PNP_QUERY_POWER D%d\n", __FUNCTION__,
 668                                 le32_to_cpup((__le32 *) buf) - 1);
 669                 /* only suspend is a real power state, and
 670                  * it can't be entered by OID_PNP_SET_POWER...
 671                  */
 672                 length = 0;
 673                 retval = 0;
 674                 break;
 675 #endif
 676
 677         default:
 678                 printk (KERN_WARNING "%s: query unknown OID 0x%08X\n",
 679                          __FUNCTION__, OID);
 680         }
 681         if (retval < 0)
 682                 length = 0;
 683
 684         resp->InformationBufferLength = cpu_to_le32 (length);
 685         r->length = length + sizeof *resp;
 686         resp->MessageLength = cpu_to_le32 (r->length);
 687         return retval;
 688 }
 689
 690 static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len,
 691                         rndis_resp_t *r)
 692 {
 693         rndis_set_cmplt_type            *resp;
 694         int                             i, retval = -ENOTSUPP;
 695         struct rndis_params             *params;
 696
 697         if (!r)
 698                 return -ENOMEM;
 699         resp = (rndis_set_cmplt_type *) r->buf;
 700         if (!resp)
 701                 return -ENOMEM;
 702
 703         if (buf_len && rndis_debug > 1) {
 704                 DEBUG("set OID %08x value, len %d:\n", OID, buf_len);
 705                 for (i = 0; i < buf_len; i += 16) {
 706                         DEBUG ("%03d: %08x %08x %08x %08x\n", i,
 707                                 le32_to_cpup((__le32 *)&buf[i]),
 708                                 le32_to_cpup((__le32 *)&buf[i + 4]),
 709                                 le32_to_cpup((__le32 *)&buf[i + 8]),
 710                                 le32_to_cpup((__le32 *)&buf[i + 12]));
 711                 }
 712         }
 713
 714         params = &rndis_per_dev_params [configNr];
 715         switch (OID) {
 716         case OID_GEN_CURRENT_PACKET_FILTER:
 717
 718                 /* these NDIS_PACKET_TYPE_* bitflags are shared with
 719                  * cdc_filter; it's not RNDIS-specific
 720                  * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
 721                  *      PROMISCUOUS, DIRECTED,
 722                  *      MULTICAST, ALL_MULTICAST, BROADCAST
 723                  */
 724                 *params->filter = (u16) le32_to_cpup((__le32 *)buf);
 725                 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
 726                         __FUNCTION__, *params->filter);
 727
 728                 /* this call has a significant side effect:  it's
 729                  * what makes the packet flow start and stop, like
 730                  * activating the CDC Ethernet altsetting.
 731                  */
 732 #ifdef  RNDIS_PM
 733 update_linkstate:
 734 #endif
 735                 retval = 0;
 736                 if (*params->filter) {
 737                         params->state = RNDIS_DATA_INITIALIZED;
 738                         netif_carrier_on(params->dev);
 739                         if (netif_running(params->dev))
 740                                 netif_wake_queue (params->dev);
 741                 } else {
 742                         params->state = RNDIS_INITIALIZED;
 743                         netif_carrier_off (params->dev);
 744                         netif_stop_queue (params->dev);
 745                 }
 746                 break;
 747
 748         case OID_802_3_MULTICAST_LIST:
 749                 /* I think we can ignore this */
 750                 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 751                 retval = 0;
 752                 break;
 753 #if 0
 754         case OID_GEN_RNDIS_CONFIG_PARAMETER:
 755                 {
 756                 struct rndis_config_parameter   *param;
 757                 param = (struct rndis_config_parameter *) buf;
 758                 DEBUG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
 759                         __FUNCTION__,
 760                         min(cpu_to_le32(param->ParameterNameLength),80),
 761                         buf + param->ParameterNameOffset);
 762                 retval = 0;
 763                 }
 764                 break;
 765 #endif
 766
 767 #ifdef  RNDIS_PM
 768         case OID_PNP_SET_POWER:
 769                 /* The only real power state is USB suspend, and RNDIS requests
 770                  * can't enter it; this one isn't really about power.  After
 771                  * resuming, Windows forces a reset, and then SET_POWER D0.
 772                  * FIXME ... then things go batty; Windows wedges itself.
 773                  */
 774                 i = le32_to_cpup((__force __le32 *)buf);
 775                 DEBUG("%s: OID_PNP_SET_POWER D%d\n", __FUNCTION__, i - 1);
 776                 switch (i) {
 777                 case NdisDeviceStateD0:
 778                         *params->filter = params->saved_filter;
 779                         goto update_linkstate;
 780                 case NdisDeviceStateD3:
 781                 case NdisDeviceStateD2:
 782                 case NdisDeviceStateD1:
 783                         params->saved_filter = *params->filter;
 784                         retval = 0;
 785                         break;
 786                 }
 787                 break;
 788
 789 #ifdef  RNDIS_WAKEUP
 790         // no wakeup support advertised, so wakeup OIDs always fail:
 791         //  - OID_PNP_ENABLE_WAKE_UP
 792         //  - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN
 793 #endif
 794
 795 #endif  /* RNDIS_PM */
 796
 797         default:
 798                 printk (KERN_WARNING "%s: set unknown OID 0x%08X, size %d\n",
 799                          __FUNCTION__, OID, buf_len);
 800         }
 801
 802         return retval;
 803 }
 804
 805 /*
 806  * Response Functions
 807  */
 808
 809 static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
 810 {
 811         rndis_init_cmplt_type   *resp;
 812         rndis_resp_t            *r;
 813
 814         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 815
 816         r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
 817         if (!r)
 818                 return -ENOMEM;
 819         resp = (rndis_init_cmplt_type *) r->buf;
 820
 821         resp->MessageType = __constant_cpu_to_le32 (
 822                         REMOTE_NDIS_INITIALIZE_CMPLT);
 823         resp->MessageLength = __constant_cpu_to_le32 (52);
 824         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 825         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 826         resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
 827         resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
 828         resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
 829         resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
 830         resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
 831         resp->MaxTransferSize = cpu_to_le32 (
 832                   rndis_per_dev_params [configNr].dev->mtu
 833                 + sizeof (struct ethhdr)
 834                 + sizeof (struct rndis_packet_msg_type)
 835                 + 22);
 836         resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
 837         resp->AFListOffset = __constant_cpu_to_le32 (0);
 838         resp->AFListSize = __constant_cpu_to_le32 (0);
 839
 840         if (rndis_per_dev_params [configNr].ack)
 841                 rndis_per_dev_params [configNr].ack (
 842                         rndis_per_dev_params [configNr].dev);
 843
 844         return 0;
 845 }
 846
 847 static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
 848 {
 849         rndis_query_cmplt_type *resp;
 850         rndis_resp_t            *r;
 851
 852         // DEBUG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
 853         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 854
 855         /*
 856          * we need more memory:
 857          * gen_ndis_query_resp expects enough space for
 858          * rndis_query_cmplt_type followed by data.
 859          * oid_supported_list is the largest data reply
 860          */
 861         r = rndis_add_response (configNr,
 862                 sizeof (oid_supported_list) + sizeof(rndis_query_cmplt_type));
 863         if (!r)
 864                 return -ENOMEM;
 865         resp = (rndis_query_cmplt_type *) r->buf;
 866
 867         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
 868         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 869
 870         if (gen_ndis_query_resp (configNr, le32_to_cpu (buf->OID),
 871                         le32_to_cpu(buf->InformationBufferOffset)
 872                                         + 8 + (u8 *) buf,
 873                         le32_to_cpu(buf->InformationBufferLength),
 874                         r)) {
 875                 /* OID not supported */
 876                 resp->Status = __constant_cpu_to_le32 (
 877                                 RNDIS_STATUS_NOT_SUPPORTED);
 878                 resp->MessageLength = __constant_cpu_to_le32 (sizeof *resp);
 879                 resp->InformationBufferLength = __constant_cpu_to_le32 (0);
 880                 resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
 881         } else
 882                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 883
 884         if (rndis_per_dev_params [configNr].ack)
 885                 rndis_per_dev_params [configNr].ack (
 886                         rndis_per_dev_params [configNr].dev);
 887         return 0;
 888 }
 889
 890 static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
 891 {
 892         u32                     BufLength, BufOffset;
 893         rndis_set_cmplt_type    *resp;
 894         rndis_resp_t            *r;
 895
 896         r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
 897         if (!r)
 898                 return -ENOMEM;
 899         resp = (rndis_set_cmplt_type *) r->buf;
 900
 901         BufLength = le32_to_cpu (buf->InformationBufferLength);
 902         BufOffset = le32_to_cpu (buf->InformationBufferOffset);
 903
 904 #ifdef  VERBOSE
 905         DEBUG("%s: Length: %d\n", __FUNCTION__, BufLength);
 906         DEBUG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
 907         DEBUG("%s: InfoBuffer: ", __FUNCTION__);
 908
 909         for (i = 0; i < BufLength; i++) {
 910                 DEBUG ("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
 911         }
 912
 913         DEBUG ("\n");
 914 #endif
 915
 916         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
 917         resp->MessageLength = __constant_cpu_to_le32 (16);
 918         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 919         if (gen_ndis_set_resp (configNr, le32_to_cpu (buf->OID),
 920                         ((u8 *) buf) + 8 + BufOffset, BufLength, r))
 921                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
 922         else
 923                 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 __devinit 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]->write_proc = rndis_proc_write;
1423                 rndis_connect_state [i]->read_proc = rndis_proc_read;
1424                 rndis_connect_state [i]->data = (void *)
1425                                 (rndis_per_dev_params + i);
1426 #endif
1427                 rndis_per_dev_params [i].confignr = i;
1428                 rndis_per_dev_params [i].used = 0;
1429                 rndis_per_dev_params [i].state = RNDIS_UNINITIALIZED;
1430                 rndis_per_dev_params [i].media_state
1431                                 = NDIS_MEDIA_STATE_DISCONNECTED;
1432                 INIT_LIST_HEAD (&(rndis_per_dev_params [i].resp_queue));
1433         }
1434
1435         return 0;
1436 }
1437
1438 void rndis_exit (void)
1439 {
1440 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1441         u8 i;
1442         char name [20];
1443
1444         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1445                 sprintf (name, NAME_TEMPLATE, i);
1446                 remove_proc_entry (name, NULL);
1447         }
1448 #endif
1449 }
1450