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   1 /*
   2  * RNDIS MSG parser
   3  *
   4  * Version:     $Id: rndis.c,v 1.19 2004/03/25 21:33:46 robert Exp $
   5  *
   6  * Authors:     Benedikt Spranger, Pengutronix
   7  *              Robert Schwebel, Pengutronix
   8  *
   9  *              This program is free software; you can redistribute it and/or
  10  *              modify it under the terms of the GNU General Public License
  11  *              version 2, as published by the Free Software Foundation.
  12  *
  13  *              This software was originally developed in conformance with
  14  *              Microsoft's Remote NDIS Specification License Agreement.
  15  *
  16  * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
  17  *              Fixed message length bug in init_response
  18  *
  19  * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
  20  *              Fixed rndis_rm_hdr length bug.
  21  *
  22  * Copyright (C) 2004 by David Brownell
  23  *              updates to merge with Linux 2.6, better match RNDIS spec
  24  */
  25
  26 #include <linux/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 static int rndis_debug = 0;
  57 module_param (rndis_debug, int, 0);
  58 MODULE_PARM_DESC (rndis_debug, "enable debugging");
  59 #else
  60 #define rndis_debug             0
  61 #endif
  62
  63 #define DBG(str,args...) do { \
  64         if (rndis_debug) \
  65                 pr_debug(str , ## args); \
  66         } while (0)
  67
  68 #define RNDIS_MAX_CONFIGS       1
  69
  70
  71 static rndis_params rndis_per_dev_params [RNDIS_MAX_CONFIGS];
  72
  73 /* Driver Version */
  74 static const __le32 rndis_driver_version = __constant_cpu_to_le32 (1);
  75
  76 /* Function Prototypes */
  77 static rndis_resp_t *rndis_add_response (int configNr, u32 length);
  78
  79
  80 /* supported OIDs */
  81 static const u32 oid_supported_list [] =
  82 {
  83         /* the general stuff */
  84         OID_GEN_SUPPORTED_LIST,
  85         OID_GEN_HARDWARE_STATUS,
  86         OID_GEN_MEDIA_SUPPORTED,
  87         OID_GEN_MEDIA_IN_USE,
  88         OID_GEN_MAXIMUM_FRAME_SIZE,
  89         OID_GEN_LINK_SPEED,
  90         OID_GEN_TRANSMIT_BLOCK_SIZE,
  91         OID_GEN_RECEIVE_BLOCK_SIZE,
  92         OID_GEN_VENDOR_ID,
  93         OID_GEN_VENDOR_DESCRIPTION,
  94         OID_GEN_VENDOR_DRIVER_VERSION,
  95         OID_GEN_CURRENT_PACKET_FILTER,
  96         OID_GEN_MAXIMUM_TOTAL_SIZE,
  97         OID_GEN_MEDIA_CONNECT_STATUS,
  98         OID_GEN_PHYSICAL_MEDIUM,
  99 #if 0
 100         OID_GEN_RNDIS_CONFIG_PARAMETER,
 101 #endif
 102
 103         /* the statistical stuff */
 104         OID_GEN_XMIT_OK,
 105         OID_GEN_RCV_OK,
 106         OID_GEN_XMIT_ERROR,
 107         OID_GEN_RCV_ERROR,
 108         OID_GEN_RCV_NO_BUFFER,
 109 #ifdef  RNDIS_OPTIONAL_STATS
 110         OID_GEN_DIRECTED_BYTES_XMIT,
 111         OID_GEN_DIRECTED_FRAMES_XMIT,
 112         OID_GEN_MULTICAST_BYTES_XMIT,
 113         OID_GEN_MULTICAST_FRAMES_XMIT,
 114         OID_GEN_BROADCAST_BYTES_XMIT,
 115         OID_GEN_BROADCAST_FRAMES_XMIT,
 116         OID_GEN_DIRECTED_BYTES_RCV,
 117         OID_GEN_DIRECTED_FRAMES_RCV,
 118         OID_GEN_MULTICAST_BYTES_RCV,
 119         OID_GEN_MULTICAST_FRAMES_RCV,
 120         OID_GEN_BROADCAST_BYTES_RCV,
 121         OID_GEN_BROADCAST_FRAMES_RCV,
 122         OID_GEN_RCV_CRC_ERROR,
 123         OID_GEN_TRANSMIT_QUEUE_LENGTH,
 124 #endif  /* RNDIS_OPTIONAL_STATS */
 125
 126         /* mandatory 802.3 */
 127         /* the general stuff */
 128         OID_802_3_PERMANENT_ADDRESS,
 129         OID_802_3_CURRENT_ADDRESS,
 130         OID_802_3_MULTICAST_LIST,
 131         OID_802_3_MAC_OPTIONS,
 132         OID_802_3_MAXIMUM_LIST_SIZE,
 133
 134         /* the statistical stuff */
 135         OID_802_3_RCV_ERROR_ALIGNMENT,
 136         OID_802_3_XMIT_ONE_COLLISION,
 137         OID_802_3_XMIT_MORE_COLLISIONS,
 138 #ifdef  RNDIS_OPTIONAL_STATS
 139         OID_802_3_XMIT_DEFERRED,
 140         OID_802_3_XMIT_MAX_COLLISIONS,
 141         OID_802_3_RCV_OVERRUN,
 142         OID_802_3_XMIT_UNDERRUN,
 143         OID_802_3_XMIT_HEARTBEAT_FAILURE,
 144         OID_802_3_XMIT_TIMES_CRS_LOST,
 145         OID_802_3_XMIT_LATE_COLLISIONS,
 146 #endif  /* RNDIS_OPTIONAL_STATS */
 147
 148 #ifdef  RNDIS_PM
 149         /* PM and wakeup are mandatory for USB: */
 150
 151         /* power management */
 152         OID_PNP_CAPABILITIES,
 153         OID_PNP_QUERY_POWER,
 154         OID_PNP_SET_POWER,
 155
 156 #ifdef  RNDIS_WAKEUP
 157         /* wake up host */
 158         OID_PNP_ENABLE_WAKE_UP,
 159         OID_PNP_ADD_WAKE_UP_PATTERN,
 160         OID_PNP_REMOVE_WAKE_UP_PATTERN,
 161 #endif  /* RNDIS_WAKEUP */
 162 #endif  /* RNDIS_PM */
 163 };
 164
 165
 166 /* NDIS Functions */
 167 static int
 168 gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
 169                 rndis_resp_t *r)
 170 {
 171         int                     retval = -ENOTSUPP;
 172         u32                     length = 4;     /* usually */
 173         __le32                  *outbuf;
 174         int                     i, count;
 175         rndis_query_cmplt_type  *resp;
 176
 177         if (!r) return -ENOMEM;
 178         resp = (rndis_query_cmplt_type *) r->buf;
 179
 180         if (!resp) return -ENOMEM;
 181
 182         if (buf_len && rndis_debug > 1) {
 183                 DBG("query OID %08x value, len %d:\n", OID, buf_len);
 184                 for (i = 0; i < buf_len; i += 16) {
 185                         DBG("%03d: %08x %08x %08x %08x\n", i,
 186                                 le32_to_cpu(get_unaligned((__le32 *)
 187                                         &buf[i])),
 188                                 le32_to_cpu(get_unaligned((__le32 *)
 189                                         &buf[i + 4])),
 190                                 le32_to_cpu(get_unaligned((__le32 *)
 191                                         &buf[i + 8])),
 192                                 le32_to_cpu(get_unaligned((__le32 *)
 193                                         &buf[i + 12])));
 194                 }
 195         }
 196
 197         /* response goes here, right after the header */
 198         outbuf = (__le32 *) &resp[1];
 199         resp->InformationBufferOffset = __constant_cpu_to_le32 (16);
 200
 201         switch (OID) {
 202
 203         /* general oids (table 4-1) */
 204
 205         /* mandatory */
 206         case OID_GEN_SUPPORTED_LIST:
 207                 DBG("%s: OID_GEN_SUPPORTED_LIST\n", __FUNCTION__);
 208                 length = sizeof (oid_supported_list);
 209                 count  = length / sizeof (u32);
 210                 for (i = 0; i < count; i++)
 211                         outbuf[i] = cpu_to_le32 (oid_supported_list[i]);
 212                 retval = 0;
 213                 break;
 214
 215         /* mandatory */
 216         case OID_GEN_HARDWARE_STATUS:
 217                 DBG("%s: OID_GEN_HARDWARE_STATUS\n", __FUNCTION__);
 218                 /* Bogus question!
 219                  * Hardware must be ready to receive high level protocols.
 220                  * BTW:
 221                  * reddite ergo quae sunt Caesaris Caesari
 222                  * et quae sunt Dei Deo!
 223                  */
 224                 *outbuf = __constant_cpu_to_le32 (0);
 225                 retval = 0;
 226                 break;
 227
 228         /* mandatory */
 229         case OID_GEN_MEDIA_SUPPORTED:
 230                 DBG("%s: OID_GEN_MEDIA_SUPPORTED\n", __FUNCTION__);
 231                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
 232                 retval = 0;
 233                 break;
 234
 235         /* mandatory */
 236         case OID_GEN_MEDIA_IN_USE:
 237                 DBG("%s: OID_GEN_MEDIA_IN_USE\n", __FUNCTION__);
 238                 /* one medium, one transport... (maybe you do it better) */
 239                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
 240                 retval = 0;
 241                 break;
 242
 243         /* mandatory */
 244         case OID_GEN_MAXIMUM_FRAME_SIZE:
 245                 DBG("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __FUNCTION__);
 246                 if (rndis_per_dev_params [configNr].dev) {
 247                         *outbuf = cpu_to_le32 (
 248                                 rndis_per_dev_params [configNr].dev->mtu);
 249                         retval = 0;
 250                 }
 251                 break;
 252
 253         /* mandatory */
 254         case OID_GEN_LINK_SPEED:
 255                 if (rndis_debug > 1)
 256                         DBG("%s: OID_GEN_LINK_SPEED\n", __FUNCTION__);
 257                 if (rndis_per_dev_params [configNr].media_state
 258                                 == NDIS_MEDIA_STATE_DISCONNECTED)
 259                         *outbuf = __constant_cpu_to_le32 (0);
 260                 else
 261                         *outbuf = cpu_to_le32 (
 262                                 rndis_per_dev_params [configNr].speed);
 263                 retval = 0;
 264                 break;
 265
 266         /* mandatory */
 267         case OID_GEN_TRANSMIT_BLOCK_SIZE:
 268                 DBG("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __FUNCTION__);
 269                 if (rndis_per_dev_params [configNr].dev) {
 270                         *outbuf = cpu_to_le32 (
 271                                 rndis_per_dev_params [configNr].dev->mtu);
 272                         retval = 0;
 273                 }
 274                 break;
 275
 276         /* mandatory */
 277         case OID_GEN_RECEIVE_BLOCK_SIZE:
 278                 DBG("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __FUNCTION__);
 279                 if (rndis_per_dev_params [configNr].dev) {
 280                         *outbuf = cpu_to_le32 (
 281                                 rndis_per_dev_params [configNr].dev->mtu);
 282                         retval = 0;
 283                 }
 284                 break;
 285
 286         /* mandatory */
 287         case OID_GEN_VENDOR_ID:
 288                 DBG("%s: OID_GEN_VENDOR_ID\n", __FUNCTION__);
 289                 *outbuf = cpu_to_le32 (
 290                         rndis_per_dev_params [configNr].vendorID);
 291                 retval = 0;
 292                 break;
 293
 294         /* mandatory */
 295         case OID_GEN_VENDOR_DESCRIPTION:
 296                 DBG("%s: OID_GEN_VENDOR_DESCRIPTION\n", __FUNCTION__);
 297                 length = strlen (rndis_per_dev_params [configNr].vendorDescr);
 298                 memcpy (outbuf,
 299                         rndis_per_dev_params [configNr].vendorDescr, length);
 300                 retval = 0;
 301                 break;
 302
 303         case OID_GEN_VENDOR_DRIVER_VERSION:
 304                 DBG("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __FUNCTION__);
 305                 /* Created as LE */
 306                 *outbuf = rndis_driver_version;
 307                 retval = 0;
 308                 break;
 309
 310         /* mandatory */
 311         case OID_GEN_CURRENT_PACKET_FILTER:
 312                 DBG("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __FUNCTION__);
 313                 *outbuf = cpu_to_le32 (*rndis_per_dev_params[configNr].filter);
 314                 retval = 0;
 315                 break;
 316
 317         /* mandatory */
 318         case OID_GEN_MAXIMUM_TOTAL_SIZE:
 319                 DBG("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __FUNCTION__);
 320                 *outbuf = __constant_cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
 321                 retval = 0;
 322                 break;
 323
 324         /* mandatory */
 325         case OID_GEN_MEDIA_CONNECT_STATUS:
 326                 if (rndis_debug > 1)
 327                         DBG("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __FUNCTION__);
 328                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 329                                                 .media_state);
 330                 retval = 0;
 331                 break;
 332
 333         case OID_GEN_PHYSICAL_MEDIUM:
 334                 DBG("%s: OID_GEN_PHYSICAL_MEDIUM\n", __FUNCTION__);
 335                 *outbuf = __constant_cpu_to_le32 (0);
 336                 retval = 0;
 337                 break;
 338
 339         /* The RNDIS specification is incomplete/wrong.   Some versions
 340          * of MS-Windows expect OIDs that aren't specified there.  Other
 341          * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
 342          */
 343         case OID_GEN_MAC_OPTIONS:               /* from WinME */
 344                 DBG("%s: OID_GEN_MAC_OPTIONS\n", __FUNCTION__);
 345                 *outbuf = __constant_cpu_to_le32(
 346                           NDIS_MAC_OPTION_RECEIVE_SERIALIZED
 347                         | NDIS_MAC_OPTION_FULL_DUPLEX);
 348                 retval = 0;
 349                 break;
 350
 351         /* statistics OIDs (table 4-2) */
 352
 353         /* mandatory */
 354         case OID_GEN_XMIT_OK:
 355                 if (rndis_debug > 1)
 356                         DBG("%s: OID_GEN_XMIT_OK\n", __FUNCTION__);
 357                 if (rndis_per_dev_params [configNr].stats) {
 358                         *outbuf = cpu_to_le32 (
 359                             rndis_per_dev_params [configNr].stats->tx_packets -
 360                             rndis_per_dev_params [configNr].stats->tx_errors -
 361                             rndis_per_dev_params [configNr].stats->tx_dropped);
 362                         retval = 0;
 363                 }
 364                 break;
 365
 366         /* mandatory */
 367         case OID_GEN_RCV_OK:
 368                 if (rndis_debug > 1)
 369                         DBG("%s: OID_GEN_RCV_OK\n", __FUNCTION__);
 370                 if (rndis_per_dev_params [configNr].stats) {
 371                         *outbuf = cpu_to_le32 (
 372                             rndis_per_dev_params [configNr].stats->rx_packets -
 373                             rndis_per_dev_params [configNr].stats->rx_errors -
 374                             rndis_per_dev_params [configNr].stats->rx_dropped);
 375                         retval = 0;
 376                 }
 377                 break;
 378
 379         /* mandatory */
 380         case OID_GEN_XMIT_ERROR:
 381                 if (rndis_debug > 1)
 382                         DBG("%s: OID_GEN_XMIT_ERROR\n", __FUNCTION__);
 383                 if (rndis_per_dev_params [configNr].stats) {
 384                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 385                                         .stats->tx_errors);
 386                         retval = 0;
 387                 }
 388                 break;
 389
 390         /* mandatory */
 391         case OID_GEN_RCV_ERROR:
 392                 if (rndis_debug > 1)
 393                         DBG("%s: OID_GEN_RCV_ERROR\n", __FUNCTION__);
 394                 if (rndis_per_dev_params [configNr].stats) {
 395                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 396                                         .stats->rx_errors);
 397                         retval = 0;
 398                 }
 399                 break;
 400
 401         /* mandatory */
 402         case OID_GEN_RCV_NO_BUFFER:
 403                 DBG("%s: OID_GEN_RCV_NO_BUFFER\n", __FUNCTION__);
 404                 if (rndis_per_dev_params [configNr].stats) {
 405                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 406                                         .stats->rx_dropped);
 407                         retval = 0;
 408                 }
 409                 break;
 410
 411 #ifdef  RNDIS_OPTIONAL_STATS
 412         case OID_GEN_DIRECTED_BYTES_XMIT:
 413                 DBG("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __FUNCTION__);
 414                 /*
 415                  * Aunt Tilly's size of shoes
 416                  * minus antarctica count of penguins
 417                  * divided by weight of Alpha Centauri
 418                  */
 419                 if (rndis_per_dev_params [configNr].stats) {
 420                         *outbuf = cpu_to_le32 (
 421                                 (rndis_per_dev_params [configNr]
 422                                         .stats->tx_packets -
 423                                  rndis_per_dev_params [configNr]
 424                                          .stats->tx_errors -
 425                                  rndis_per_dev_params [configNr]
 426                                          .stats->tx_dropped)
 427                                 * 123);
 428                         retval = 0;
 429                 }
 430                 break;
 431
 432         case OID_GEN_DIRECTED_FRAMES_XMIT:
 433                 DBG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __FUNCTION__);
 434                 /* dito */
 435                 if (rndis_per_dev_params [configNr].stats) {
 436                         *outbuf = cpu_to_le32 (
 437                                 (rndis_per_dev_params [configNr]
 438                                         .stats->tx_packets -
 439                                  rndis_per_dev_params [configNr]
 440                                          .stats->tx_errors -
 441                                  rndis_per_dev_params [configNr]
 442                                          .stats->tx_dropped)
 443                                 / 123);
 444                         retval = 0;
 445                 }
 446                 break;
 447
 448         case OID_GEN_MULTICAST_BYTES_XMIT:
 449                 DBG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __FUNCTION__);
 450                 if (rndis_per_dev_params [configNr].stats) {
 451                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 452                                         .stats->multicast*1234);
 453                         retval = 0;
 454                 }
 455                 break;
 456
 457         case OID_GEN_MULTICAST_FRAMES_XMIT:
 458                 DBG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __FUNCTION__);
 459                 if (rndis_per_dev_params [configNr].stats) {
 460                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 461                                         .stats->multicast);
 462                         retval = 0;
 463                 }
 464                 break;
 465
 466         case OID_GEN_BROADCAST_BYTES_XMIT:
 467                 DBG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __FUNCTION__);
 468                 if (rndis_per_dev_params [configNr].stats) {
 469                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 470                                         .stats->tx_packets/42*255);
 471                         retval = 0;
 472                 }
 473                 break;
 474
 475         case OID_GEN_BROADCAST_FRAMES_XMIT:
 476                 DBG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __FUNCTION__);
 477                 if (rndis_per_dev_params [configNr].stats) {
 478                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 479                                         .stats->tx_packets/42);
 480                         retval = 0;
 481                 }
 482                 break;
 483
 484         case OID_GEN_DIRECTED_BYTES_RCV:
 485                 DBG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __FUNCTION__);
 486                 *outbuf = __constant_cpu_to_le32 (0);
 487                 retval = 0;
 488                 break;
 489
 490         case OID_GEN_DIRECTED_FRAMES_RCV:
 491                 DBG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __FUNCTION__);
 492                 *outbuf = __constant_cpu_to_le32 (0);
 493                 retval = 0;
 494                 break;
 495
 496         case OID_GEN_MULTICAST_BYTES_RCV:
 497                 DBG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __FUNCTION__);
 498                 if (rndis_per_dev_params [configNr].stats) {
 499                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 500                                         .stats->multicast * 1111);
 501                         retval = 0;
 502                 }
 503                 break;
 504
 505         case OID_GEN_MULTICAST_FRAMES_RCV:
 506                 DBG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __FUNCTION__);
 507                 if (rndis_per_dev_params [configNr].stats) {
 508                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 509                                         .stats->multicast);
 510                         retval = 0;
 511                 }
 512                 break;
 513
 514         case OID_GEN_BROADCAST_BYTES_RCV:
 515                 DBG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __FUNCTION__);
 516                 if (rndis_per_dev_params [configNr].stats) {
 517                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 518                                         .stats->rx_packets/42*255);
 519                         retval = 0;
 520                 }
 521                 break;
 522
 523         case OID_GEN_BROADCAST_FRAMES_RCV:
 524                 DBG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __FUNCTION__);
 525                 if (rndis_per_dev_params [configNr].stats) {
 526                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 527                                         .stats->rx_packets/42);
 528                         retval = 0;
 529                 }
 530                 break;
 531
 532         case OID_GEN_RCV_CRC_ERROR:
 533                 DBG("%s: OID_GEN_RCV_CRC_ERROR\n", __FUNCTION__);
 534                 if (rndis_per_dev_params [configNr].stats) {
 535                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 536                                         .stats->rx_crc_errors);
 537                         retval = 0;
 538                 }
 539                 break;
 540
 541         case OID_GEN_TRANSMIT_QUEUE_LENGTH:
 542                 DBG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __FUNCTION__);
 543                 *outbuf = __constant_cpu_to_le32 (0);
 544                 retval = 0;
 545                 break;
 546 #endif  /* RNDIS_OPTIONAL_STATS */
 547
 548         /* ieee802.3 OIDs (table 4-3) */
 549
 550         /* mandatory */
 551         case OID_802_3_PERMANENT_ADDRESS:
 552                 DBG("%s: OID_802_3_PERMANENT_ADDRESS\n", __FUNCTION__);
 553                 if (rndis_per_dev_params [configNr].dev) {
 554                         length = ETH_ALEN;
 555                         memcpy (outbuf,
 556                                 rndis_per_dev_params [configNr].host_mac,
 557                                 length);
 558                         retval = 0;
 559                 }
 560                 break;
 561
 562         /* mandatory */
 563         case OID_802_3_CURRENT_ADDRESS:
 564                 DBG("%s: OID_802_3_CURRENT_ADDRESS\n", __FUNCTION__);
 565                 if (rndis_per_dev_params [configNr].dev) {
 566                         length = ETH_ALEN;
 567                         memcpy (outbuf,
 568                                 rndis_per_dev_params [configNr].host_mac,
 569                                 length);
 570                         retval = 0;
 571                 }
 572                 break;
 573
 574         /* mandatory */
 575         case OID_802_3_MULTICAST_LIST:
 576                 DBG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 577                 /* Multicast base address only */
 578                 *outbuf = __constant_cpu_to_le32 (0xE0000000);
 579                 retval = 0;
 580                 break;
 581
 582         /* mandatory */
 583         case OID_802_3_MAXIMUM_LIST_SIZE:
 584                 DBG("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __FUNCTION__);
 585                 /* Multicast base address only */
 586                 *outbuf = __constant_cpu_to_le32 (1);
 587                 retval = 0;
 588                 break;
 589
 590         case OID_802_3_MAC_OPTIONS:
 591                 DBG("%s: OID_802_3_MAC_OPTIONS\n", __FUNCTION__);
 592                 break;
 593
 594         /* ieee802.3 statistics OIDs (table 4-4) */
 595
 596         /* mandatory */
 597         case OID_802_3_RCV_ERROR_ALIGNMENT:
 598                 DBG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __FUNCTION__);
 599                 if (rndis_per_dev_params [configNr].stats) {
 600                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
 601                                         .stats->rx_frame_errors);
 602                         retval = 0;
 603                 }
 604                 break;
 605
 606         /* mandatory */
 607         case OID_802_3_XMIT_ONE_COLLISION:
 608                 DBG("%s: OID_802_3_XMIT_ONE_COLLISION\n", __FUNCTION__);
 609                 *outbuf = __constant_cpu_to_le32 (0);
 610                 retval = 0;
 611                 break;
 612
 613         /* mandatory */
 614         case OID_802_3_XMIT_MORE_COLLISIONS:
 615                 DBG("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __FUNCTION__);
 616                 *outbuf = __constant_cpu_to_le32 (0);
 617                 retval = 0;
 618                 break;
 619
 620 #ifdef  RNDIS_OPTIONAL_STATS
 621         case OID_802_3_XMIT_DEFERRED:
 622                 DBG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
 623                 /* TODO */
 624                 break;
 625
 626         case OID_802_3_XMIT_MAX_COLLISIONS:
 627                 DBG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
 628                 /* TODO */
 629                 break;
 630
 631         case OID_802_3_RCV_OVERRUN:
 632                 DBG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
 633                 /* TODO */
 634                 break;
 635
 636         case OID_802_3_XMIT_UNDERRUN:
 637                 DBG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
 638                 /* TODO */
 639                 break;
 640
 641         case OID_802_3_XMIT_HEARTBEAT_FAILURE:
 642                 DBG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
 643                 /* TODO */
 644                 break;
 645
 646         case OID_802_3_XMIT_TIMES_CRS_LOST:
 647                 DBG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
 648                 /* TODO */
 649                 break;
 650
 651         case OID_802_3_XMIT_LATE_COLLISIONS:
 652                 DBG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __FUNCTION__);
 653                 /* TODO */
 654                 break;
 655 #endif  /* RNDIS_OPTIONAL_STATS */
 656
 657 #ifdef  RNDIS_PM
 658         /* power management OIDs (table 4-5) */
 659         case OID_PNP_CAPABILITIES:
 660                 DBG("%s: OID_PNP_CAPABILITIES\n", __FUNCTION__);
 661
 662                 /* for now, no wakeup capabilities */
 663                 length = sizeof (struct NDIS_PNP_CAPABILITIES);
 664                 memset(outbuf, 0, length);
 665                 retval = 0;
 666                 break;
 667         case OID_PNP_QUERY_POWER:
 668                 DBG("%s: OID_PNP_QUERY_POWER D%d\n", __FUNCTION__,
 669                                 le32_to_cpu(get_unaligned((__le32 *)buf)) - 1);
 670                 /* only suspend is a real power state, and
 671                  * it can't be entered by OID_PNP_SET_POWER...
 672                  */
 673                 length = 0;
 674                 retval = 0;
 675                 break;
 676 #endif
 677
 678         default:
 679                 pr_warning("%s: query unknown OID 0x%08X\n",
 680                          __FUNCTION__, OID);
 681         }
 682         if (retval < 0)
 683                 length = 0;
 684
 685         resp->InformationBufferLength = cpu_to_le32 (length);
 686         r->length = length + sizeof *resp;
 687         resp->MessageLength = cpu_to_le32 (r->length);
 688         return retval;
 689 }
 690
 691 static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len,
 692                         rndis_resp_t *r)
 693 {
 694         rndis_set_cmplt_type            *resp;
 695         int                             i, retval = -ENOTSUPP;
 696         struct rndis_params             *params;
 697
 698         if (!r)
 699                 return -ENOMEM;
 700         resp = (rndis_set_cmplt_type *) r->buf;
 701         if (!resp)
 702                 return -ENOMEM;
 703
 704         if (buf_len && rndis_debug > 1) {
 705                 DBG("set OID %08x value, len %d:\n", OID, buf_len);
 706                 for (i = 0; i < buf_len; i += 16) {
 707                         DBG("%03d: %08x %08x %08x %08x\n", i,
 708                                 le32_to_cpu(get_unaligned((__le32 *)
 709                                         &buf[i])),
 710                                 le32_to_cpu(get_unaligned((__le32 *)
 711                                         &buf[i + 4])),
 712                                 le32_to_cpu(get_unaligned((__le32 *)
 713                                         &buf[i + 8])),
 714                                 le32_to_cpu(get_unaligned((__le32 *)
 715                                         &buf[i + 12])));
 716                 }
 717         }
 718
 719         params = &rndis_per_dev_params [configNr];
 720         switch (OID) {
 721         case OID_GEN_CURRENT_PACKET_FILTER:
 722
 723                 /* these NDIS_PACKET_TYPE_* bitflags are shared with
 724                  * cdc_filter; it's not RNDIS-specific
 725                  * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
 726                  *      PROMISCUOUS, DIRECTED,
 727                  *      MULTICAST, ALL_MULTICAST, BROADCAST
 728                  */
 729                 *params->filter = (u16) le32_to_cpu(get_unaligned(
 730                                 (__le32 *)buf));
 731                 DBG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
 732                         __FUNCTION__, *params->filter);
 733
 734                 /* this call has a significant side effect:  it's
 735                  * what makes the packet flow start and stop, like
 736                  * activating the CDC Ethernet altsetting.
 737                  */
 738 #ifdef  RNDIS_PM
 739 update_linkstate:
 740 #endif
 741                 retval = 0;
 742                 if (*params->filter) {
 743                         params->state = RNDIS_DATA_INITIALIZED;
 744                         netif_carrier_on(params->dev);
 745                         if (netif_running(params->dev))
 746                                 netif_wake_queue (params->dev);
 747                 } else {
 748                         params->state = RNDIS_INITIALIZED;
 749                         netif_carrier_off (params->dev);
 750                         netif_stop_queue (params->dev);
 751                 }
 752                 break;
 753
 754         case OID_802_3_MULTICAST_LIST:
 755                 /* I think we can ignore this */
 756                 DBG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 757                 retval = 0;
 758                 break;
 759 #if 0
 760         case OID_GEN_RNDIS_CONFIG_PARAMETER:
 761                 {
 762                 struct rndis_config_parameter   *param;
 763                 param = (struct rndis_config_parameter *) buf;
 764                 DBG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
 765                         __FUNCTION__,
 766                         min(cpu_to_le32(param->ParameterNameLength),80),
 767                         buf + param->ParameterNameOffset);
 768                 retval = 0;
 769                 }
 770                 break;
 771 #endif
 772
 773 #ifdef  RNDIS_PM
 774         case OID_PNP_SET_POWER:
 775                 /* The only real power state is USB suspend, and RNDIS requests
 776                  * can't enter it; this one isn't really about power.  After
 777                  * resuming, Windows forces a reset, and then SET_POWER D0.
 778                  * FIXME ... then things go batty; Windows wedges itself.
 779                  */
 780                 i = le32_to_cpu(get_unaligned((__le32 *)buf));
 781                 DBG("%s: OID_PNP_SET_POWER D%d\n", __FUNCTION__, i - 1);
 782                 switch (i) {
 783                 case NdisDeviceStateD0:
 784                         *params->filter = params->saved_filter;
 785                         goto update_linkstate;
 786                 case NdisDeviceStateD3:
 787                 case NdisDeviceStateD2:
 788                 case NdisDeviceStateD1:
 789                         params->saved_filter = *params->filter;
 790                         retval = 0;
 791                         break;
 792                 }
 793                 break;
 794
 795 #ifdef  RNDIS_WAKEUP
 796         // no wakeup support advertised, so wakeup OIDs always fail:
 797         //  - OID_PNP_ENABLE_WAKE_UP
 798         //  - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN
 799 #endif
 800
 801 #endif  /* RNDIS_PM */
 802
 803         default:
 804                 pr_warning("%s: set unknown OID 0x%08X, size %d\n",
 805                          __FUNCTION__, OID, buf_len);
 806         }
 807
 808         return retval;
 809 }
 810
 811 /*
 812  * Response Functions
 813  */
 814
 815 static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
 816 {
 817         rndis_init_cmplt_type   *resp;
 818         rndis_resp_t            *r;
 819
 820         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 821
 822         r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
 823         if (!r)
 824                 return -ENOMEM;
 825         resp = (rndis_init_cmplt_type *) r->buf;
 826
 827         resp->MessageType = __constant_cpu_to_le32 (
 828                         REMOTE_NDIS_INITIALIZE_CMPLT);
 829         resp->MessageLength = __constant_cpu_to_le32 (52);
 830         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 831         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 832         resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
 833         resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
 834         resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
 835         resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
 836         resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
 837         resp->MaxTransferSize = cpu_to_le32 (
 838                   rndis_per_dev_params [configNr].dev->mtu
 839                 + sizeof (struct ethhdr)
 840                 + sizeof (struct rndis_packet_msg_type)
 841                 + 22);
 842         resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
 843         resp->AFListOffset = __constant_cpu_to_le32 (0);
 844         resp->AFListSize = __constant_cpu_to_le32 (0);
 845
 846         if (rndis_per_dev_params [configNr].ack)
 847                 rndis_per_dev_params [configNr].ack (
 848                         rndis_per_dev_params [configNr].dev);
 849
 850         return 0;
 851 }
 852
 853 static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
 854 {
 855         rndis_query_cmplt_type *resp;
 856         rndis_resp_t            *r;
 857
 858         // DBG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
 859         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 860
 861         /*
 862          * we need more memory:
 863          * gen_ndis_query_resp expects enough space for
 864          * rndis_query_cmplt_type followed by data.
 865          * oid_supported_list is the largest data reply
 866          */
 867         r = rndis_add_response (configNr,
 868                 sizeof (oid_supported_list) + sizeof(rndis_query_cmplt_type));
 869         if (!r)
 870                 return -ENOMEM;
 871         resp = (rndis_query_cmplt_type *) r->buf;
 872
 873         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
 874         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 875
 876         if (gen_ndis_query_resp (configNr, le32_to_cpu (buf->OID),
 877                         le32_to_cpu(buf->InformationBufferOffset)
 878                                         + 8 + (u8 *) buf,
 879                         le32_to_cpu(buf->InformationBufferLength),
 880                         r)) {
 881                 /* OID not supported */
 882                 resp->Status = __constant_cpu_to_le32 (
 883                                 RNDIS_STATUS_NOT_SUPPORTED);
 884                 resp->MessageLength = __constant_cpu_to_le32 (sizeof *resp);
 885                 resp->InformationBufferLength = __constant_cpu_to_le32 (0);
 886                 resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
 887         } else
 888                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 889
 890         if (rndis_per_dev_params [configNr].ack)
 891                 rndis_per_dev_params [configNr].ack (
 892                         rndis_per_dev_params [configNr].dev);
 893         return 0;
 894 }
 895
 896 static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
 897 {
 898         u32                     BufLength, BufOffset;
 899         rndis_set_cmplt_type    *resp;
 900         rndis_resp_t            *r;
 901
 902         r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
 903         if (!r)
 904                 return -ENOMEM;
 905         resp = (rndis_set_cmplt_type *) r->buf;
 906
 907         BufLength = le32_to_cpu (buf->InformationBufferLength);
 908         BufOffset = le32_to_cpu (buf->InformationBufferOffset);
 909
 910 #ifdef  VERBOSE
 911         DBG("%s: Length: %d\n", __FUNCTION__, BufLength);
 912         DBG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
 913         DBG("%s: InfoBuffer: ", __FUNCTION__);
 914
 915         for (i = 0; i < BufLength; i++) {
 916                 DBG("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
 917         }
 918
 919         DBG("\n");
 920 #endif
 921
 922         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
 923         resp->MessageLength = __constant_cpu_to_le32 (16);
 924         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 925         if (gen_ndis_set_resp (configNr, le32_to_cpu (buf->OID),
 926                         ((u8 *) buf) + 8 + BufOffset, BufLength, r))
 927                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
 928         else
 929                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 930
 931         if (rndis_per_dev_params [configNr].ack)
 932                 rndis_per_dev_params [configNr].ack (
 933                         rndis_per_dev_params [configNr].dev);
 934
 935         return 0;
 936 }
 937
 938 static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
 939 {
 940         rndis_reset_cmplt_type  *resp;
 941         rndis_resp_t            *r;
 942
 943         r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type));
 944         if (!r)
 945                 return -ENOMEM;
 946         resp = (rndis_reset_cmplt_type *) r->buf;
 947
 948         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
 949         resp->MessageLength = __constant_cpu_to_le32 (16);
 950         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 951         /* resent information */
 952         resp->AddressingReset = __constant_cpu_to_le32 (1);
 953
 954         if (rndis_per_dev_params [configNr].ack)
 955                 rndis_per_dev_params [configNr].ack (
 956                         rndis_per_dev_params [configNr].dev);
 957
 958         return 0;
 959 }
 960
 961 static int rndis_keepalive_response (int configNr,
 962                                 rndis_keepalive_msg_type *buf)
 963 {
 964         rndis_keepalive_cmplt_type      *resp;
 965         rndis_resp_t                    *r;
 966
 967         /* host "should" check only in RNDIS_DATA_INITIALIZED state */
 968
 969         r = rndis_add_response (configNr, sizeof (rndis_keepalive_cmplt_type));
 970         if (!r)
 971                 return -ENOMEM;
 972         resp = (rndis_keepalive_cmplt_type *) r->buf;
 973
 974         resp->MessageType = __constant_cpu_to_le32 (
 975                         REMOTE_NDIS_KEEPALIVE_CMPLT);
 976         resp->MessageLength = __constant_cpu_to_le32 (16);
 977         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 978         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 979
 980         if (rndis_per_dev_params [configNr].ack)
 981                 rndis_per_dev_params [configNr].ack (
 982                         rndis_per_dev_params [configNr].dev);
 983
 984         return 0;
 985 }
 986
 987
 988 /*
 989  * Device to Host Comunication
 990  */
 991 static int rndis_indicate_status_msg (int configNr, u32 status)
 992 {
 993         rndis_indicate_status_msg_type  *resp;
 994         rndis_resp_t                    *r;
 995
 996         if (rndis_per_dev_params [configNr].state == RNDIS_UNINITIALIZED)
 997                 return -ENOTSUPP;
 998
 999         r = rndis_add_response (configNr,
1000                                 sizeof (rndis_indicate_status_msg_type));
1001         if (!r)
1002                 return -ENOMEM;
1003         resp = (rndis_indicate_status_msg_type *) r->buf;
1004
1005         resp->MessageType = __constant_cpu_to_le32 (
1006                         REMOTE_NDIS_INDICATE_STATUS_MSG);
1007         resp->MessageLength = __constant_cpu_to_le32 (20);
1008         resp->Status = cpu_to_le32 (status);
1009         resp->StatusBufferLength = __constant_cpu_to_le32 (0);
1010         resp->StatusBufferOffset = __constant_cpu_to_le32 (0);
1011
1012         if (rndis_per_dev_params [configNr].ack)
1013                 rndis_per_dev_params [configNr].ack (
1014                         rndis_per_dev_params [configNr].dev);
1015         return 0;
1016 }
1017
1018 int rndis_signal_connect (int configNr)
1019 {
1020         rndis_per_dev_params [configNr].media_state
1021                         = NDIS_MEDIA_STATE_CONNECTED;
1022         return rndis_indicate_status_msg (configNr,
1023                                           RNDIS_STATUS_MEDIA_CONNECT);
1024 }
1025
1026 int rndis_signal_disconnect (int configNr)
1027 {
1028         rndis_per_dev_params [configNr].media_state
1029                         = NDIS_MEDIA_STATE_DISCONNECTED;
1030         return rndis_indicate_status_msg (configNr,
1031                                           RNDIS_STATUS_MEDIA_DISCONNECT);
1032 }
1033
1034 void rndis_uninit (int configNr)
1035 {
1036         u8 *buf;
1037         u32 length;
1038
1039         if (configNr >= RNDIS_MAX_CONFIGS)
1040                 return;
1041         rndis_per_dev_params [configNr].used = 0;
1042         rndis_per_dev_params [configNr].state = RNDIS_UNINITIALIZED;
1043
1044         /* drain the response queue */
1045         while ((buf = rndis_get_next_response(configNr, &length)))
1046                 rndis_free_response(configNr, buf);
1047 }
1048
1049 void rndis_set_host_mac (int configNr, const u8 *addr)
1050 {
1051         rndis_per_dev_params [configNr].host_mac = addr;
1052 }
1053
1054 /*
1055  * Message Parser
1056  */
1057 int rndis_msg_parser (u8 configNr, u8 *buf)
1058 {
1059         u32 MsgType, MsgLength;
1060         __le32 *tmp;
1061         struct rndis_params             *params;
1062
1063         if (!buf)
1064                 return -ENOMEM;
1065
1066         tmp = (__le32 *) buf;
1067         MsgType   = le32_to_cpu(get_unaligned(tmp++));
1068         MsgLength = le32_to_cpu(get_unaligned(tmp++));
1069
1070         if (configNr >= RNDIS_MAX_CONFIGS)
1071                 return -ENOTSUPP;
1072         params = &rndis_per_dev_params [configNr];
1073
1074         /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
1075          * rx/tx statistics and link status, in addition to KEEPALIVE traffic
1076          * and normal HC level polling to see if there's any IN traffic.
1077          */
1078
1079         /* For USB: responses may take up to 10 seconds */
1080         switch (MsgType) {
1081         case REMOTE_NDIS_INITIALIZE_MSG:
1082                 DBG("%s: REMOTE_NDIS_INITIALIZE_MSG\n",
1083                         __FUNCTION__ );
1084                 params->state = RNDIS_INITIALIZED;
1085                 return  rndis_init_response (configNr,
1086                                         (rndis_init_msg_type *) buf);
1087
1088         case REMOTE_NDIS_HALT_MSG:
1089                 DBG("%s: REMOTE_NDIS_HALT_MSG\n",
1090                         __FUNCTION__ );
1091                 params->state = RNDIS_UNINITIALIZED;
1092                 if (params->dev) {
1093                         netif_carrier_off (params->dev);
1094                         netif_stop_queue (params->dev);
1095                 }
1096                 return 0;
1097
1098         case REMOTE_NDIS_QUERY_MSG:
1099                 return rndis_query_response (configNr,
1100                                         (rndis_query_msg_type *) buf);
1101
1102         case REMOTE_NDIS_SET_MSG:
1103                 return rndis_set_response (configNr,
1104                                         (rndis_set_msg_type *) buf);
1105
1106         case REMOTE_NDIS_RESET_MSG:
1107                 DBG("%s: REMOTE_NDIS_RESET_MSG\n",
1108                         __FUNCTION__ );
1109                 return rndis_reset_response (configNr,
1110                                         (rndis_reset_msg_type *) buf);
1111
1112         case REMOTE_NDIS_KEEPALIVE_MSG:
1113                 /* For USB: host does this every 5 seconds */
1114                 if (rndis_debug > 1)
1115                         DBG("%s: REMOTE_NDIS_KEEPALIVE_MSG\n",
1116                                 __FUNCTION__ );
1117                 return rndis_keepalive_response (configNr,
1118                                                  (rndis_keepalive_msg_type *)
1119                                                  buf);
1120
1121         default:
1122                 /* At least Windows XP emits some undefined RNDIS messages.
1123                  * In one case those messages seemed to relate to the host
1124                  * suspending itself.
1125                  */
1126                 pr_warning("%s: unknown RNDIS message 0x%08X len %d\n",
1127                         __FUNCTION__ , MsgType, MsgLength);
1128                 {
1129                         unsigned i;
1130                         for (i = 0; i < MsgLength; i += 16) {
1131                                 DBG("%03d: "
1132                                         " %02x %02x %02x %02x"
1133                                         " %02x %02x %02x %02x"
1134                                         " %02x %02x %02x %02x"
1135                                         " %02x %02x %02x %02x"
1136                                         "\n",
1137                                         i,
1138                                         buf[i], buf [i+1],
1139                                                 buf[i+2], buf[i+3],
1140                                         buf[i+4], buf [i+5],
1141                                                 buf[i+6], buf[i+7],
1142                                         buf[i+8], buf [i+9],
1143                                                 buf[i+10], buf[i+11],
1144                                         buf[i+12], buf [i+13],
1145                                                 buf[i+14], buf[i+15]);
1146                         }
1147                 }
1148                 break;
1149         }
1150
1151         return -ENOTSUPP;
1152 }
1153
1154 int rndis_register (int (* rndis_control_ack) (struct net_device *))
1155 {
1156         u8 i;
1157
1158         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1159                 if (!rndis_per_dev_params [i].used) {
1160                         rndis_per_dev_params [i].used = 1;
1161                         rndis_per_dev_params [i].ack = rndis_control_ack;
1162                         DBG("%s: configNr = %d\n", __FUNCTION__, i);
1163                         return i;
1164                 }
1165         }
1166         DBG("failed\n");
1167
1168         return -1;
1169 }
1170
1171 void rndis_deregister (int configNr)
1172 {
1173         DBG("%s: \n", __FUNCTION__ );
1174
1175         if (configNr >= RNDIS_MAX_CONFIGS) return;
1176         rndis_per_dev_params [configNr].used = 0;
1177
1178         return;
1179 }
1180
1181 int rndis_set_param_dev (u8 configNr, struct net_device *dev,
1182                          struct net_device_stats *stats,
1183                          u16 *cdc_filter)
1184 {
1185         DBG("%s:\n", __FUNCTION__ );
1186         if (!dev || !stats) return -1;
1187         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1188
1189         rndis_per_dev_params [configNr].dev = dev;
1190         rndis_per_dev_params [configNr].stats = stats;
1191         rndis_per_dev_params [configNr].filter = cdc_filter;
1192
1193         return 0;
1194 }
1195
1196 int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr)
1197 {
1198         DBG("%s:\n", __FUNCTION__ );
1199         if (!vendorDescr) return -1;
1200         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1201
1202         rndis_per_dev_params [configNr].vendorID = vendorID;
1203         rndis_per_dev_params [configNr].vendorDescr = vendorDescr;
1204
1205         return 0;
1206 }
1207
1208 int rndis_set_param_medium (u8 configNr, u32 medium, u32 speed)
1209 {
1210         DBG("%s: %u %u\n", __FUNCTION__, medium, speed);
1211         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1212
1213         rndis_per_dev_params [configNr].medium = medium;
1214         rndis_per_dev_params [configNr].speed = speed;
1215
1216         return 0;
1217 }
1218
1219 void rndis_add_hdr (struct sk_buff *skb)
1220 {
1221         struct rndis_packet_msg_type    *header;
1222
1223         if (!skb)
1224                 return;
1225         header = (void *) skb_push (skb, sizeof *header);
1226         memset (header, 0, sizeof *header);
1227         header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
1228         header->MessageLength = cpu_to_le32(skb->len);
1229         header->DataOffset = __constant_cpu_to_le32 (36);
1230         header->DataLength = cpu_to_le32(skb->len - sizeof *header);
1231 }
1232
1233 void rndis_free_response (int configNr, u8 *buf)
1234 {
1235         rndis_resp_t            *r;
1236         struct list_head        *act, *tmp;
1237
1238         list_for_each_safe (act, tmp,
1239                         &(rndis_per_dev_params [configNr].resp_queue))
1240         {
1241                 r = list_entry (act, rndis_resp_t, list);
1242                 if (r && r->buf == buf) {
1243                         list_del (&r->list);
1244                         kfree (r);
1245                 }
1246         }
1247 }
1248
1249 u8 *rndis_get_next_response (int configNr, u32 *length)
1250 {
1251         rndis_resp_t            *r;
1252         struct list_head        *act, *tmp;
1253
1254         if (!length) return NULL;
1255
1256         list_for_each_safe (act, tmp,
1257                         &(rndis_per_dev_params [configNr].resp_queue))
1258         {
1259                 r = list_entry (act, rndis_resp_t, list);
1260                 if (!r->send) {
1261                         r->send = 1;
1262                         *length = r->length;
1263                         return r->buf;
1264                 }
1265         }
1266
1267         return NULL;
1268 }
1269
1270 static rndis_resp_t *rndis_add_response (int configNr, u32 length)
1271 {
1272         rndis_resp_t    *r;
1273
1274         /* NOTE:  this gets copied into ether.c USB_BUFSIZ bytes ... */
1275         r = kmalloc (sizeof (rndis_resp_t) + length, GFP_ATOMIC);
1276         if (!r) return NULL;
1277
1278         r->buf = (u8 *) (r + 1);
1279         r->length = length;
1280         r->send = 0;
1281
1282         list_add_tail (&r->list,
1283                 &(rndis_per_dev_params [configNr].resp_queue));
1284         return r;
1285 }
1286
1287 int rndis_rm_hdr(struct sk_buff *skb)
1288 {
1289         /* tmp points to a struct rndis_packet_msg_type */
1290         __le32          *tmp = (void *) skb->data;
1291
1292         /* MessageType, MessageLength */
1293         if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
1294                         != get_unaligned(tmp++))
1295                 return -EINVAL;
1296         tmp++;
1297
1298         /* DataOffset, DataLength */
1299         if (!skb_pull(skb, le32_to_cpu(get_unaligned(tmp++))
1300                         + 8 /* offset of DataOffset */))
1301                 return -EOVERFLOW;
1302         skb_trim(skb, le32_to_cpu(get_unaligned(tmp++)));
1303
1304         return 0;
1305 }
1306
1307 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1308
1309 static int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof,
1310                 void *data)
1311 {
1312         char *out = page;
1313         int len;
1314         rndis_params *param = (rndis_params *) data;
1315
1316         out += snprintf (out, count,
1317                          "Config Nr. %d\n"
1318                          "used      : %s\n"
1319                          "state     : %s\n"
1320                          "medium    : 0x%08X\n"
1321                          "speed     : %d\n"
1322                          "cable     : %s\n"
1323                          "vendor ID : 0x%08X\n"
1324                          "vendor    : %s\n",
1325                          param->confignr, (param->used) ? "y" : "n",
1326                          ({ char *s = "?";
1327                          switch (param->state) {
1328                          case RNDIS_UNINITIALIZED:
1329                                 s = "RNDIS_UNINITIALIZED"; break;
1330                          case RNDIS_INITIALIZED:
1331                                 s = "RNDIS_INITIALIZED"; break;
1332                          case RNDIS_DATA_INITIALIZED:
1333                                 s = "RNDIS_DATA_INITIALIZED"; break;
1334                         }; s; }),
1335                          param->medium,
1336                          (param->media_state) ? 0 : param->speed*100,
1337                          (param->media_state) ? "disconnected" : "connected",
1338                          param->vendorID, param->vendorDescr);
1339
1340         len = out - page;
1341         len -= off;
1342
1343         if (len < count) {
1344                 *eof = 1;
1345                 if (len <= 0)
1346                         return 0;
1347         } else
1348                 len = count;
1349
1350         *start = page + off;
1351         return len;
1352 }
1353
1354 static int rndis_proc_write (struct file *file, const char __user *buffer,
1355                 unsigned long count, void *data)
1356 {
1357         rndis_params *p = data;
1358         u32 speed = 0;
1359         int i, fl_speed = 0;
1360
1361         for (i = 0; i < count; i++) {
1362                 char c;
1363                 if (get_user(c, buffer))
1364                         return -EFAULT;
1365                 switch (c) {
1366                 case '0':
1367                 case '1':
1368                 case '2':
1369                 case '3':
1370                 case '4':
1371                 case '5':
1372                 case '6':
1373                 case '7':
1374                 case '8':
1375                 case '9':
1376                         fl_speed = 1;
1377                         speed = speed*10 + c - '0';
1378                         break;
1379                 case 'C':
1380                 case 'c':
1381                         rndis_signal_connect (p->confignr);
1382                         break;
1383                 case 'D':
1384                 case 'd':
1385                         rndis_signal_disconnect(p->confignr);
1386                         break;
1387                 default:
1388                         if (fl_speed) p->speed = speed;
1389                         else DBG("%c is not valid\n", c);
1390                         break;
1391                 }
1392
1393                 buffer++;
1394         }
1395
1396         return count;
1397 }
1398
1399 #define NAME_TEMPLATE   "driver/rndis-%03d"
1400
1401 static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
1402
1403 #endif  /* CONFIG_USB_GADGET_DEBUG_FILES */
1404
1405
1406 int __devinit rndis_init (void)
1407 {
1408         u8 i;
1409
1410         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1411 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1412                 char name [20];
1413
1414                 sprintf (name, NAME_TEMPLATE, i);
1415                 if (!(rndis_connect_state [i]
1416                                 = create_proc_entry (name, 0660, NULL)))
1417                 {
1418                         DBG("%s :remove entries", __FUNCTION__);
1419                         while (i) {
1420                                 sprintf (name, NAME_TEMPLATE, --i);
1421                                 remove_proc_entry (name, NULL);
1422                         }
1423                         DBG("\n");
1424                         return -EIO;
1425                 }
1426
1427                 rndis_connect_state [i]->write_proc = rndis_proc_write;
1428                 rndis_connect_state [i]->read_proc = rndis_proc_read;
1429                 rndis_connect_state [i]->data = (void *)
1430                                 (rndis_per_dev_params + i);
1431 #endif
1432                 rndis_per_dev_params [i].confignr = i;
1433                 rndis_per_dev_params [i].used = 0;
1434                 rndis_per_dev_params [i].state = RNDIS_UNINITIALIZED;
1435                 rndis_per_dev_params [i].media_state
1436                                 = NDIS_MEDIA_STATE_DISCONNECTED;
1437                 INIT_LIST_HEAD (&(rndis_per_dev_params [i].resp_queue));
1438         }
1439
1440         return 0;
1441 }
1442
1443 void rndis_exit (void)
1444 {
1445 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1446         u8 i;
1447         char name [20];
1448
1449         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1450                 sprintf (name, NAME_TEMPLATE, i);
1451                 remove_proc_entry (name, NULL);
1452         }
1453 #endif
1454 }
1455