drivers/usb/gadget/rndis.c

   1 /*
   2  * RNDIS MSG parser
   3  *
   4  * Authors:     Benedikt Spranger, Pengutronix
   5  *              Robert Schwebel, Pengutronix
   6  *
   7  *              This program is free software; you can redistribute it and/or
   8  *              modify it under the terms of the GNU General Public License
   9  *              version 2, as published by the Free Software Foundation.
  10  *
  11  *              This software was originally developed in conformance with
  12  *              Microsoft's Remote NDIS Specification License Agreement.
  13  *
  14  * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
  15  *              Fixed message length bug in init_response
  16  *
  17  * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
  18  *              Fixed rndis_rm_hdr length bug.
  19  *
  20  * Copyright (C) 2004 by David Brownell
  21  *              updates to merge with Linux 2.6, better match RNDIS spec
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/kernel.h>
  27 #include <linux/errno.h>
  28 #include <linux/list.h>
  29 #include <linux/proc_fs.h>
  30 #include <linux/slab.h>
  31 #include <linux/seq_file.h>
  32 #include <linux/netdevice.h>
  33
  34 #include <asm/io.h>
  35 #include <asm/byteorder.h>
  36 #include <asm/unaligned.h>
  37
  38
  39 #undef  VERBOSE_DEBUG
  40
  41 #include "rndis.h"
  42
  43
  44 /* The driver for your USB chip needs to support ep0 OUT to work with
  45  * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
  46  *
  47  * Windows hosts need an INF file like Documentation/usb/linux.inf
  48  * and will be happier if you provide the host_addr module parameter.
  49  */
  50
  51 #if 0
  52 static int rndis_debug = 0;
  53 module_param (rndis_debug, int, 0);
  54 MODULE_PARM_DESC (rndis_debug, "enable debugging");
  55 #else
  56 #define rndis_debug             0
  57 #endif
  58
  59 #define RNDIS_MAX_CONFIGS       1
  60
  61
  62 static rndis_params rndis_per_dev_params[RNDIS_MAX_CONFIGS];
  63
  64 /* Driver Version */
  65 static const __le32 rndis_driver_version = cpu_to_le32(1);
  66
  67 /* Function Prototypes */
  68 static rndis_resp_t *rndis_add_response(int configNr, u32 length);
  69
  70
  71 /* supported OIDs */
  72 static const u32 oid_supported_list[] =
  73 {
  74         /* the general stuff */
  75         RNDIS_OID_GEN_SUPPORTED_LIST,
  76         RNDIS_OID_GEN_HARDWARE_STATUS,
  77         RNDIS_OID_GEN_MEDIA_SUPPORTED,
  78         RNDIS_OID_GEN_MEDIA_IN_USE,
  79         RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE,
  80         RNDIS_OID_GEN_LINK_SPEED,
  81         RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE,
  82         RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE,
  83         RNDIS_OID_GEN_VENDOR_ID,
  84         RNDIS_OID_GEN_VENDOR_DESCRIPTION,
  85         RNDIS_OID_GEN_VENDOR_DRIVER_VERSION,
  86         RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
  87         RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE,
  88         RNDIS_OID_GEN_MEDIA_CONNECT_STATUS,
  89         RNDIS_OID_GEN_PHYSICAL_MEDIUM,
  90
  91         /* the statistical stuff */
  92         RNDIS_OID_GEN_XMIT_OK,
  93         RNDIS_OID_GEN_RCV_OK,
  94         RNDIS_OID_GEN_XMIT_ERROR,
  95         RNDIS_OID_GEN_RCV_ERROR,
  96         RNDIS_OID_GEN_RCV_NO_BUFFER,
  97 #ifdef  RNDIS_OPTIONAL_STATS
  98         RNDIS_OID_GEN_DIRECTED_BYTES_XMIT,
  99         RNDIS_OID_GEN_DIRECTED_FRAMES_XMIT,
 100         RNDIS_OID_GEN_MULTICAST_BYTES_XMIT,
 101         RNDIS_OID_GEN_MULTICAST_FRAMES_XMIT,
 102         RNDIS_OID_GEN_BROADCAST_BYTES_XMIT,
 103         RNDIS_OID_GEN_BROADCAST_FRAMES_XMIT,
 104         RNDIS_OID_GEN_DIRECTED_BYTES_RCV,
 105         RNDIS_OID_GEN_DIRECTED_FRAMES_RCV,
 106         RNDIS_OID_GEN_MULTICAST_BYTES_RCV,
 107         RNDIS_OID_GEN_MULTICAST_FRAMES_RCV,
 108         RNDIS_OID_GEN_BROADCAST_BYTES_RCV,
 109         RNDIS_OID_GEN_BROADCAST_FRAMES_RCV,
 110         RNDIS_OID_GEN_RCV_CRC_ERROR,
 111         RNDIS_OID_GEN_TRANSMIT_QUEUE_LENGTH,
 112 #endif  /* RNDIS_OPTIONAL_STATS */
 113
 114         /* mandatory 802.3 */
 115         /* the general stuff */
 116         RNDIS_OID_802_3_PERMANENT_ADDRESS,
 117         RNDIS_OID_802_3_CURRENT_ADDRESS,
 118         RNDIS_OID_802_3_MULTICAST_LIST,
 119         RNDIS_OID_802_3_MAC_OPTIONS,
 120         RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
 121
 122         /* the statistical stuff */
 123         RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT,
 124         RNDIS_OID_802_3_XMIT_ONE_COLLISION,
 125         RNDIS_OID_802_3_XMIT_MORE_COLLISIONS,
 126 #ifdef  RNDIS_OPTIONAL_STATS
 127         RNDIS_OID_802_3_XMIT_DEFERRED,
 128         RNDIS_OID_802_3_XMIT_MAX_COLLISIONS,
 129         RNDIS_OID_802_3_RCV_OVERRUN,
 130         RNDIS_OID_802_3_XMIT_UNDERRUN,
 131         RNDIS_OID_802_3_XMIT_HEARTBEAT_FAILURE,
 132         RNDIS_OID_802_3_XMIT_TIMES_CRS_LOST,
 133         RNDIS_OID_802_3_XMIT_LATE_COLLISIONS,
 134 #endif  /* RNDIS_OPTIONAL_STATS */
 135
 136 #ifdef  RNDIS_PM
 137         /* PM and wakeup are "mandatory" for USB, but the RNDIS specs
 138          * don't say what they mean ... and the NDIS specs are often
 139          * confusing and/or ambiguous in this context.  (That is, more
 140          * so than their specs for the other OIDs.)
 141          *
 142          * FIXME someone who knows what these should do, please
 143          * implement them!
 144          */
 145
 146         /* power management */
 147         OID_PNP_CAPABILITIES,
 148         OID_PNP_QUERY_POWER,
 149         OID_PNP_SET_POWER,
 150
 151 #ifdef  RNDIS_WAKEUP
 152         /* wake up host */
 153         OID_PNP_ENABLE_WAKE_UP,
 154         OID_PNP_ADD_WAKE_UP_PATTERN,
 155         OID_PNP_REMOVE_WAKE_UP_PATTERN,
 156 #endif  /* RNDIS_WAKEUP */
 157 #endif  /* RNDIS_PM */
 158 };
 159
 160
 161 /* NDIS Functions */
 162 static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
 163                                unsigned buf_len, rndis_resp_t *r)
 164 {
 165         int retval = -ENOTSUPP;
 166         u32 length = 4; /* usually */
 167         __le32 *outbuf;
 168         int i, count;
 169         rndis_query_cmplt_type *resp;
 170         struct net_device *net;
 171         struct rtnl_link_stats64 temp;
 172         const struct rtnl_link_stats64 *stats;
 173
 174         if (!r) return -ENOMEM;
 175         resp = (rndis_query_cmplt_type *)r->buf;
 176
 177         if (!resp) return -ENOMEM;
 178
 179         if (buf_len && rndis_debug > 1) {
 180                 pr_debug("query OID %08x value, len %d:\n", OID, buf_len);
 181                 for (i = 0; i < buf_len; i += 16) {
 182                         pr_debug("%03d: %08x %08x %08x %08x\n", i,
 183                                 get_unaligned_le32(&buf[i]),
 184                                 get_unaligned_le32(&buf[i + 4]),
 185                                 get_unaligned_le32(&buf[i + 8]),
 186                                 get_unaligned_le32(&buf[i + 12]));
 187                 }
 188         }
 189
 190         /* response goes here, right after the header */
 191         outbuf = (__le32 *)&resp[1];
 192         resp->InformationBufferOffset = cpu_to_le32(16);
 193
 194         net = rndis_per_dev_params[configNr].dev;
 195         stats = dev_get_stats(net, &temp);
 196
 197         switch (OID) {
 198
 199         /* general oids (table 4-1) */
 200
 201         /* mandatory */
 202         case RNDIS_OID_GEN_SUPPORTED_LIST:
 203                 pr_debug("%s: RNDIS_OID_GEN_SUPPORTED_LIST\n", __func__);
 204                 length = sizeof(oid_supported_list);
 205                 count  = length / sizeof(u32);
 206                 for (i = 0; i < count; i++)
 207                         outbuf[i] = cpu_to_le32(oid_supported_list[i]);
 208                 retval = 0;
 209                 break;
 210
 211         /* mandatory */
 212         case RNDIS_OID_GEN_HARDWARE_STATUS:
 213                 pr_debug("%s: RNDIS_OID_GEN_HARDWARE_STATUS\n", __func__);
 214                 /* Bogus question!
 215                  * Hardware must be ready to receive high level protocols.
 216                  * BTW:
 217                  * reddite ergo quae sunt Caesaris Caesari
 218                  * et quae sunt Dei Deo!
 219                  */
 220                 *outbuf = cpu_to_le32(0);
 221                 retval = 0;
 222                 break;
 223
 224         /* mandatory */
 225         case RNDIS_OID_GEN_MEDIA_SUPPORTED:
 226                 pr_debug("%s: RNDIS_OID_GEN_MEDIA_SUPPORTED\n", __func__);
 227                 *outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium);
 228                 retval = 0;
 229                 break;
 230
 231         /* mandatory */
 232         case RNDIS_OID_GEN_MEDIA_IN_USE:
 233                 pr_debug("%s: RNDIS_OID_GEN_MEDIA_IN_USE\n", __func__);
 234                 /* one medium, one transport... (maybe you do it better) */
 235                 *outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium);
 236                 retval = 0;
 237                 break;
 238
 239         /* mandatory */
 240         case RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE:
 241                 pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__);
 242                 if (rndis_per_dev_params[configNr].dev) {
 243                         *outbuf = cpu_to_le32(
 244                                 rndis_per_dev_params[configNr].dev->mtu);
 245                         retval = 0;
 246                 }
 247                 break;
 248
 249         /* mandatory */
 250         case RNDIS_OID_GEN_LINK_SPEED:
 251                 if (rndis_debug > 1)
 252                         pr_debug("%s: RNDIS_OID_GEN_LINK_SPEED\n", __func__);
 253                 if (rndis_per_dev_params[configNr].media_state
 254                                 == RNDIS_MEDIA_STATE_DISCONNECTED)
 255                         *outbuf = cpu_to_le32(0);
 256                 else
 257                         *outbuf = cpu_to_le32(
 258                                 rndis_per_dev_params[configNr].speed);
 259                 retval = 0;
 260                 break;
 261
 262         /* mandatory */
 263         case RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE:
 264                 pr_debug("%s: RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__);
 265                 if (rndis_per_dev_params[configNr].dev) {
 266                         *outbuf = cpu_to_le32(
 267                                 rndis_per_dev_params[configNr].dev->mtu);
 268                         retval = 0;
 269                 }
 270                 break;
 271
 272         /* mandatory */
 273         case RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE:
 274                 pr_debug("%s: RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__);
 275                 if (rndis_per_dev_params[configNr].dev) {
 276                         *outbuf = cpu_to_le32(
 277                                 rndis_per_dev_params[configNr].dev->mtu);
 278                         retval = 0;
 279                 }
 280                 break;
 281
 282         /* mandatory */
 283         case RNDIS_OID_GEN_VENDOR_ID:
 284                 pr_debug("%s: RNDIS_OID_GEN_VENDOR_ID\n", __func__);
 285                 *outbuf = cpu_to_le32(
 286                         rndis_per_dev_params[configNr].vendorID);
 287                 retval = 0;
 288                 break;
 289
 290         /* mandatory */
 291         case RNDIS_OID_GEN_VENDOR_DESCRIPTION:
 292                 pr_debug("%s: RNDIS_OID_GEN_VENDOR_DESCRIPTION\n", __func__);
 293                 if (rndis_per_dev_params[configNr].vendorDescr) {
 294                         length = strlen(rndis_per_dev_params[configNr].
 295                                         vendorDescr);
 296                         memcpy(outbuf,
 297                                 rndis_per_dev_params[configNr].vendorDescr,
 298                                 length);
 299                 } else {
 300                         outbuf[0] = 0;
 301                 }
 302                 retval = 0;
 303                 break;
 304
 305         case RNDIS_OID_GEN_VENDOR_DRIVER_VERSION:
 306                 pr_debug("%s: RNDIS_OID_GEN_VENDOR_DRIVER_VERSION\n", __func__);
 307                 /* Created as LE */
 308                 *outbuf = rndis_driver_version;
 309                 retval = 0;
 310                 break;
 311
 312         /* mandatory */
 313         case RNDIS_OID_GEN_CURRENT_PACKET_FILTER:
 314                 pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER\n", __func__);
 315                 *outbuf = cpu_to_le32(*rndis_per_dev_params[configNr].filter);
 316                 retval = 0;
 317                 break;
 318
 319         /* mandatory */
 320         case RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE:
 321                 pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__);
 322                 *outbuf = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
 323                 retval = 0;
 324                 break;
 325
 326         /* mandatory */
 327         case RNDIS_OID_GEN_MEDIA_CONNECT_STATUS:
 328                 if (rndis_debug > 1)
 329                         pr_debug("%s: RNDIS_OID_GEN_MEDIA_CONNECT_STATUS\n", __func__);
 330                 *outbuf = cpu_to_le32(rndis_per_dev_params[configNr]
 331                                                 .media_state);
 332                 retval = 0;
 333                 break;
 334
 335         case RNDIS_OID_GEN_PHYSICAL_MEDIUM:
 336                 pr_debug("%s: RNDIS_OID_GEN_PHYSICAL_MEDIUM\n", __func__);
 337                 *outbuf = cpu_to_le32(0);
 338                 retval = 0;
 339                 break;
 340
 341         /* The RNDIS specification is incomplete/wrong.   Some versions
 342          * of MS-Windows expect OIDs that aren't specified there.  Other
 343          * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
 344          */
 345         case RNDIS_OID_GEN_MAC_OPTIONS:         /* from WinME */
 346                 pr_debug("%s: RNDIS_OID_GEN_MAC_OPTIONS\n", __func__);
 347                 *outbuf = cpu_to_le32(
 348                           RNDIS_MAC_OPTION_RECEIVE_SERIALIZED
 349                         | RNDIS_MAC_OPTION_FULL_DUPLEX);
 350                 retval = 0;
 351                 break;
 352
 353         /* statistics OIDs (table 4-2) */
 354
 355         /* mandatory */
 356         case RNDIS_OID_GEN_XMIT_OK:
 357                 if (rndis_debug > 1)
 358                         pr_debug("%s: RNDIS_OID_GEN_XMIT_OK\n", __func__);
 359                 if (stats) {
 360                         *outbuf = cpu_to_le32(stats->tx_packets
 361                                 - stats->tx_errors - stats->tx_dropped);
 362                         retval = 0;
 363                 }
 364                 break;
 365
 366         /* mandatory */
 367         case RNDIS_OID_GEN_RCV_OK:
 368                 if (rndis_debug > 1)
 369                         pr_debug("%s: RNDIS_OID_GEN_RCV_OK\n", __func__);
 370                 if (stats) {
 371                         *outbuf = cpu_to_le32(stats->rx_packets
 372                                 - stats->rx_errors - stats->rx_dropped);
 373                         retval = 0;
 374                 }
 375                 break;
 376
 377         /* mandatory */
 378         case RNDIS_OID_GEN_XMIT_ERROR:
 379                 if (rndis_debug > 1)
 380                         pr_debug("%s: RNDIS_OID_GEN_XMIT_ERROR\n", __func__);
 381                 if (stats) {
 382                         *outbuf = cpu_to_le32(stats->tx_errors);
 383                         retval = 0;
 384                 }
 385                 break;
 386
 387         /* mandatory */
 388         case RNDIS_OID_GEN_RCV_ERROR:
 389                 if (rndis_debug > 1)
 390                         pr_debug("%s: RNDIS_OID_GEN_RCV_ERROR\n", __func__);
 391                 if (stats) {
 392                         *outbuf = cpu_to_le32(stats->rx_errors);
 393                         retval = 0;
 394                 }
 395                 break;
 396
 397         /* mandatory */
 398         case RNDIS_OID_GEN_RCV_NO_BUFFER:
 399                 pr_debug("%s: RNDIS_OID_GEN_RCV_NO_BUFFER\n", __func__);
 400                 if (stats) {
 401                         *outbuf = cpu_to_le32(stats->rx_dropped);
 402                         retval = 0;
 403                 }
 404                 break;
 405
 406         /* ieee802.3 OIDs (table 4-3) */
 407
 408         /* mandatory */
 409         case RNDIS_OID_802_3_PERMANENT_ADDRESS:
 410                 pr_debug("%s: RNDIS_OID_802_3_PERMANENT_ADDRESS\n", __func__);
 411                 if (rndis_per_dev_params[configNr].dev) {
 412                         length = ETH_ALEN;
 413                         memcpy(outbuf,
 414                                 rndis_per_dev_params[configNr].host_mac,
 415                                 length);
 416                         retval = 0;
 417                 }
 418                 break;
 419
 420         /* mandatory */
 421         case RNDIS_OID_802_3_CURRENT_ADDRESS:
 422                 pr_debug("%s: RNDIS_OID_802_3_CURRENT_ADDRESS\n", __func__);
 423                 if (rndis_per_dev_params[configNr].dev) {
 424                         length = ETH_ALEN;
 425                         memcpy(outbuf,
 426                                 rndis_per_dev_params [configNr].host_mac,
 427                                 length);
 428                         retval = 0;
 429                 }
 430                 break;
 431
 432         /* mandatory */
 433         case RNDIS_OID_802_3_MULTICAST_LIST:
 434                 pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__);
 435                 /* Multicast base address only */
 436                 *outbuf = cpu_to_le32(0xE0000000);
 437                 retval = 0;
 438                 break;
 439
 440         /* mandatory */
 441         case RNDIS_OID_802_3_MAXIMUM_LIST_SIZE:
 442                 pr_debug("%s: RNDIS_OID_802_3_MAXIMUM_LIST_SIZE\n", __func__);
 443                 /* Multicast base address only */
 444                 *outbuf = cpu_to_le32(1);
 445                 retval = 0;
 446                 break;
 447
 448         case RNDIS_OID_802_3_MAC_OPTIONS:
 449                 pr_debug("%s: RNDIS_OID_802_3_MAC_OPTIONS\n", __func__);
 450                 *outbuf = cpu_to_le32(0);
 451                 retval = 0;
 452                 break;
 453
 454         /* ieee802.3 statistics OIDs (table 4-4) */
 455
 456         /* mandatory */
 457         case RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT:
 458                 pr_debug("%s: RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__);
 459                 if (stats) {
 460                         *outbuf = cpu_to_le32(stats->rx_frame_errors);
 461                         retval = 0;
 462                 }
 463                 break;
 464
 465         /* mandatory */
 466         case RNDIS_OID_802_3_XMIT_ONE_COLLISION:
 467                 pr_debug("%s: RNDIS_OID_802_3_XMIT_ONE_COLLISION\n", __func__);
 468                 *outbuf = cpu_to_le32(0);
 469                 retval = 0;
 470                 break;
 471
 472         /* mandatory */
 473         case RNDIS_OID_802_3_XMIT_MORE_COLLISIONS:
 474                 pr_debug("%s: RNDIS_OID_802_3_XMIT_MORE_COLLISIONS\n", __func__);
 475                 *outbuf = cpu_to_le32(0);
 476                 retval = 0;
 477                 break;
 478
 479         default:
 480                 pr_warning("%s: query unknown OID 0x%08X\n",
 481                          __func__, OID);
 482         }
 483         if (retval < 0)
 484                 length = 0;
 485
 486         resp->InformationBufferLength = cpu_to_le32(length);
 487         r->length = length + sizeof(*resp);
 488         resp->MessageLength = cpu_to_le32(r->length);
 489         return retval;
 490 }
 491
 492 static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len,
 493                              rndis_resp_t *r)
 494 {
 495         rndis_set_cmplt_type *resp;
 496         int i, retval = -ENOTSUPP;
 497         struct rndis_params *params;
 498
 499         if (!r)
 500                 return -ENOMEM;
 501         resp = (rndis_set_cmplt_type *)r->buf;
 502         if (!resp)
 503                 return -ENOMEM;
 504
 505         if (buf_len && rndis_debug > 1) {
 506                 pr_debug("set OID %08x value, len %d:\n", OID, buf_len);
 507                 for (i = 0; i < buf_len; i += 16) {
 508                         pr_debug("%03d: %08x %08x %08x %08x\n", i,
 509                                 get_unaligned_le32(&buf[i]),
 510                                 get_unaligned_le32(&buf[i + 4]),
 511                                 get_unaligned_le32(&buf[i + 8]),
 512                                 get_unaligned_le32(&buf[i + 12]));
 513                 }
 514         }
 515
 516         params = &rndis_per_dev_params[configNr];
 517         switch (OID) {
 518         case RNDIS_OID_GEN_CURRENT_PACKET_FILTER:
 519
 520                 /* these NDIS_PACKET_TYPE_* bitflags are shared with
 521                  * cdc_filter; it's not RNDIS-specific
 522                  * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
 523                  *      PROMISCUOUS, DIRECTED,
 524                  *      MULTICAST, ALL_MULTICAST, BROADCAST
 525                  */
 526                 *params->filter = (u16)get_unaligned_le32(buf);
 527                 pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER %08x\n",
 528                         __func__, *params->filter);
 529
 530                 /* this call has a significant side effect:  it's
 531                  * what makes the packet flow start and stop, like
 532                  * activating the CDC Ethernet altsetting.
 533                  */
 534                 retval = 0;
 535                 if (*params->filter) {
 536                         params->state = RNDIS_DATA_INITIALIZED;
 537                         netif_carrier_on(params->dev);
 538                         if (netif_running(params->dev))
 539                                 netif_wake_queue(params->dev);
 540                 } else {
 541                         params->state = RNDIS_INITIALIZED;
 542                         netif_carrier_off(params->dev);
 543                         netif_stop_queue(params->dev);
 544                 }
 545                 break;
 546
 547         case RNDIS_OID_802_3_MULTICAST_LIST:
 548                 /* I think we can ignore this */
 549                 pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__);
 550                 retval = 0;
 551                 break;
 552
 553         default:
 554                 pr_warning("%s: set unknown OID 0x%08X, size %d\n",
 555                          __func__, OID, buf_len);
 556         }
 557
 558         return retval;
 559 }
 560
 561 /*
 562  * Response Functions
 563  */
 564
 565 static int rndis_init_response(int configNr, rndis_init_msg_type *buf)
 566 {
 567         rndis_init_cmplt_type *resp;
 568         rndis_resp_t *r;
 569         struct rndis_params *params = rndis_per_dev_params + configNr;
 570
 571         if (!params->dev)
 572                 return -ENOTSUPP;
 573
 574         r = rndis_add_response(configNr, sizeof(rndis_init_cmplt_type));
 575         if (!r)
 576                 return -ENOMEM;
 577         resp = (rndis_init_cmplt_type *)r->buf;
 578
 579         resp->MessageType = cpu_to_le32(RNDIS_MSG_INIT_C);
 580         resp->MessageLength = cpu_to_le32(52);
 581         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 582         resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
 583         resp->MajorVersion = cpu_to_le32(RNDIS_MAJOR_VERSION);
 584         resp->MinorVersion = cpu_to_le32(RNDIS_MINOR_VERSION);
 585         resp->DeviceFlags = cpu_to_le32(RNDIS_DF_CONNECTIONLESS);
 586         resp->Medium = cpu_to_le32(RNDIS_MEDIUM_802_3);
 587         resp->MaxPacketsPerTransfer = cpu_to_le32(1);
 588         resp->MaxTransferSize = cpu_to_le32(
 589                   params->dev->mtu
 590                 + sizeof(struct ethhdr)
 591                 + sizeof(struct rndis_packet_msg_type)
 592                 + 22);
 593         resp->PacketAlignmentFactor = cpu_to_le32(0);
 594         resp->AFListOffset = cpu_to_le32(0);
 595         resp->AFListSize = cpu_to_le32(0);
 596
 597         params->resp_avail(params->v);
 598         return 0;
 599 }
 600
 601 static int rndis_query_response(int configNr, rndis_query_msg_type *buf)
 602 {
 603         rndis_query_cmplt_type *resp;
 604         rndis_resp_t *r;
 605         struct rndis_params *params = rndis_per_dev_params + configNr;
 606
 607         /* pr_debug("%s: OID = %08X\n", __func__, cpu_to_le32(buf->OID)); */
 608         if (!params->dev)
 609                 return -ENOTSUPP;
 610
 611         /*
 612          * we need more memory:
 613          * gen_ndis_query_resp expects enough space for
 614          * rndis_query_cmplt_type followed by data.
 615          * oid_supported_list is the largest data reply
 616          */
 617         r = rndis_add_response(configNr,
 618                 sizeof(oid_supported_list) + sizeof(rndis_query_cmplt_type));
 619         if (!r)
 620                 return -ENOMEM;
 621         resp = (rndis_query_cmplt_type *)r->buf;
 622
 623         resp->MessageType = cpu_to_le32(RNDIS_MSG_QUERY_C);
 624         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 625
 626         if (gen_ndis_query_resp(configNr, le32_to_cpu(buf->OID),
 627                         le32_to_cpu(buf->InformationBufferOffset)
 628                                         + 8 + (u8 *)buf,
 629                         le32_to_cpu(buf->InformationBufferLength),
 630                         r)) {
 631                 /* OID not supported */
 632                 resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED);
 633                 resp->MessageLength = cpu_to_le32(sizeof *resp);
 634                 resp->InformationBufferLength = cpu_to_le32(0);
 635                 resp->InformationBufferOffset = cpu_to_le32(0);
 636         } else
 637                 resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
 638
 639         params->resp_avail(params->v);
 640         return 0;
 641 }
 642
 643 static int rndis_set_response(int configNr, rndis_set_msg_type *buf)
 644 {
 645         u32 BufLength, BufOffset;
 646         rndis_set_cmplt_type *resp;
 647         rndis_resp_t *r;
 648         struct rndis_params *params = rndis_per_dev_params + configNr;
 649
 650         r = rndis_add_response(configNr, sizeof(rndis_set_cmplt_type));
 651         if (!r)
 652                 return -ENOMEM;
 653         resp = (rndis_set_cmplt_type *)r->buf;
 654
 655         BufLength = le32_to_cpu(buf->InformationBufferLength);
 656         BufOffset = le32_to_cpu(buf->InformationBufferOffset);
 657
 658 #ifdef  VERBOSE_DEBUG
 659         pr_debug("%s: Length: %d\n", __func__, BufLength);
 660         pr_debug("%s: Offset: %d\n", __func__, BufOffset);
 661         pr_debug("%s: InfoBuffer: ", __func__);
 662
 663         for (i = 0; i < BufLength; i++) {
 664                 pr_debug("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
 665         }
 666
 667         pr_debug("\n");
 668 #endif
 669
 670         resp->MessageType = cpu_to_le32(RNDIS_MSG_SET_C);
 671         resp->MessageLength = cpu_to_le32(16);
 672         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 673         if (gen_ndis_set_resp(configNr, le32_to_cpu(buf->OID),
 674                         ((u8 *)buf) + 8 + BufOffset, BufLength, r))
 675                 resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED);
 676         else
 677                 resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
 678
 679         params->resp_avail(params->v);
 680         return 0;
 681 }
 682
 683 static int rndis_reset_response(int configNr, rndis_reset_msg_type *buf)
 684 {
 685         rndis_reset_cmplt_type *resp;
 686         rndis_resp_t *r;
 687         struct rndis_params *params = rndis_per_dev_params + configNr;
 688
 689         r = rndis_add_response(configNr, sizeof(rndis_reset_cmplt_type));
 690         if (!r)
 691                 return -ENOMEM;
 692         resp = (rndis_reset_cmplt_type *)r->buf;
 693
 694         resp->MessageType = cpu_to_le32(RNDIS_MSG_RESET_C);
 695         resp->MessageLength = cpu_to_le32(16);
 696         resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
 697         /* resent information */
 698         resp->AddressingReset = cpu_to_le32(1);
 699
 700         params->resp_avail(params->v);
 701         return 0;
 702 }
 703
 704 static int rndis_keepalive_response(int configNr,
 705                                     rndis_keepalive_msg_type *buf)
 706 {
 707         rndis_keepalive_cmplt_type *resp;
 708         rndis_resp_t *r;
 709         struct rndis_params *params = rndis_per_dev_params + configNr;
 710
 711         /* host "should" check only in RNDIS_DATA_INITIALIZED state */
 712
 713         r = rndis_add_response(configNr, sizeof(rndis_keepalive_cmplt_type));
 714         if (!r)
 715                 return -ENOMEM;
 716         resp = (rndis_keepalive_cmplt_type *)r->buf;
 717
 718         resp->MessageType = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C);
 719         resp->MessageLength = cpu_to_le32(16);
 720         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 721         resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
 722
 723         params->resp_avail(params->v);
 724         return 0;
 725 }
 726
 727
 728 /*
 729  * Device to Host Comunication
 730  */
 731 static int rndis_indicate_status_msg(int configNr, u32 status)
 732 {
 733         rndis_indicate_status_msg_type *resp;
 734         rndis_resp_t *r;
 735         struct rndis_params *params = rndis_per_dev_params + configNr;
 736
 737         if (params->state == RNDIS_UNINITIALIZED)
 738                 return -ENOTSUPP;
 739
 740         r = rndis_add_response(configNr,
 741                                 sizeof(rndis_indicate_status_msg_type));
 742         if (!r)
 743                 return -ENOMEM;
 744         resp = (rndis_indicate_status_msg_type *)r->buf;
 745
 746         resp->MessageType = cpu_to_le32(RNDIS_MSG_INDICATE);
 747         resp->MessageLength = cpu_to_le32(20);
 748         resp->Status = cpu_to_le32(status);
 749         resp->StatusBufferLength = cpu_to_le32(0);
 750         resp->StatusBufferOffset = cpu_to_le32(0);
 751
 752         params->resp_avail(params->v);
 753         return 0;
 754 }
 755
 756 int rndis_signal_connect(int configNr)
 757 {
 758         rndis_per_dev_params[configNr].media_state
 759                         = RNDIS_MEDIA_STATE_CONNECTED;
 760         return rndis_indicate_status_msg(configNr,
 761                                           RNDIS_STATUS_MEDIA_CONNECT);
 762 }
 763 EXPORT_SYMBOL(rndis_signal_connect);
 764
 765 int rndis_signal_disconnect(int configNr)
 766 {
 767         rndis_per_dev_params[configNr].media_state
 768                         = RNDIS_MEDIA_STATE_DISCONNECTED;
 769         return rndis_indicate_status_msg(configNr,
 770                                           RNDIS_STATUS_MEDIA_DISCONNECT);
 771 }
 772 EXPORT_SYMBOL(rndis_signal_disconnect);
 773
 774 void rndis_uninit(int configNr)
 775 {
 776         u8 *buf;
 777         u32 length;
 778
 779         if (configNr >= RNDIS_MAX_CONFIGS)
 780                 return;
 781         rndis_per_dev_params[configNr].state = RNDIS_UNINITIALIZED;
 782
 783         /* drain the response queue */
 784         while ((buf = rndis_get_next_response(configNr, &length)))
 785                 rndis_free_response(configNr, buf);
 786 }
 787 EXPORT_SYMBOL(rndis_uninit);
 788
 789 void rndis_set_host_mac(int configNr, const u8 *addr)
 790 {
 791         rndis_per_dev_params[configNr].host_mac = addr;
 792 }
 793 EXPORT_SYMBOL(rndis_set_host_mac);
 794
 795 /*
 796  * Message Parser
 797  */
 798 int rndis_msg_parser(u8 configNr, u8 *buf)
 799 {
 800         u32 MsgType, MsgLength;
 801         __le32 *tmp;
 802         struct rndis_params *params;
 803
 804         if (!buf)
 805                 return -ENOMEM;
 806
 807         tmp = (__le32 *)buf;
 808         MsgType   = get_unaligned_le32(tmp++);
 809         MsgLength = get_unaligned_le32(tmp++);
 810
 811         if (configNr >= RNDIS_MAX_CONFIGS)
 812                 return -ENOTSUPP;
 813         params = &rndis_per_dev_params[configNr];
 814
 815         /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
 816          * rx/tx statistics and link status, in addition to KEEPALIVE traffic
 817          * and normal HC level polling to see if there's any IN traffic.
 818          */
 819
 820         /* For USB: responses may take up to 10 seconds */
 821         switch (MsgType) {
 822         case RNDIS_MSG_INIT:
 823                 pr_debug("%s: RNDIS_MSG_INIT\n",
 824                         __func__);
 825                 params->state = RNDIS_INITIALIZED;
 826                 return rndis_init_response(configNr,
 827                                         (rndis_init_msg_type *)buf);
 828
 829         case RNDIS_MSG_HALT:
 830                 pr_debug("%s: RNDIS_MSG_HALT\n",
 831                         __func__);
 832                 params->state = RNDIS_UNINITIALIZED;
 833                 if (params->dev) {
 834                         netif_carrier_off(params->dev);
 835                         netif_stop_queue(params->dev);
 836                 }
 837                 return 0;
 838
 839         case RNDIS_MSG_QUERY:
 840                 return rndis_query_response(configNr,
 841                                         (rndis_query_msg_type *)buf);
 842
 843         case RNDIS_MSG_SET:
 844                 return rndis_set_response(configNr,
 845                                         (rndis_set_msg_type *)buf);
 846
 847         case RNDIS_MSG_RESET:
 848                 pr_debug("%s: RNDIS_MSG_RESET\n",
 849                         __func__);
 850                 return rndis_reset_response(configNr,
 851                                         (rndis_reset_msg_type *)buf);
 852
 853         case RNDIS_MSG_KEEPALIVE:
 854                 /* For USB: host does this every 5 seconds */
 855                 if (rndis_debug > 1)
 856                         pr_debug("%s: RNDIS_MSG_KEEPALIVE\n",
 857                                 __func__);
 858                 return rndis_keepalive_response(configNr,
 859                                                  (rndis_keepalive_msg_type *)
 860                                                  buf);
 861
 862         default:
 863                 /* At least Windows XP emits some undefined RNDIS messages.
 864                  * In one case those messages seemed to relate to the host
 865                  * suspending itself.
 866                  */
 867                 pr_warning("%s: unknown RNDIS message 0x%08X len %d\n",
 868                         __func__, MsgType, MsgLength);
 869                 print_hex_dump_bytes(__func__, DUMP_PREFIX_OFFSET,
 870                                      buf, MsgLength);
 871                 break;
 872         }
 873
 874         return -ENOTSUPP;
 875 }
 876 EXPORT_SYMBOL(rndis_msg_parser);
 877
 878 int rndis_register(void (*resp_avail)(void *v), void *v)
 879 {
 880         u8 i;
 881
 882         if (!resp_avail)
 883                 return -EINVAL;
 884
 885         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
 886                 if (!rndis_per_dev_params[i].used) {
 887                         rndis_per_dev_params[i].used = 1;
 888                         rndis_per_dev_params[i].resp_avail = resp_avail;
 889                         rndis_per_dev_params[i].v = v;
 890                         pr_debug("%s: configNr = %d\n", __func__, i);
 891                         return i;
 892                 }
 893         }
 894         pr_debug("failed\n");
 895
 896         return -ENODEV;
 897 }
 898 EXPORT_SYMBOL(rndis_register);
 899
 900 void rndis_deregister(int configNr)
 901 {
 902         pr_debug("%s:\n", __func__);
 903
 904         if (configNr >= RNDIS_MAX_CONFIGS) return;
 905         rndis_per_dev_params[configNr].used = 0;
 906 }
 907 EXPORT_SYMBOL(rndis_deregister);
 908
 909 int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter)
 910 {
 911         pr_debug("%s:\n", __func__);
 912         if (!dev)
 913                 return -EINVAL;
 914         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
 915
 916         rndis_per_dev_params[configNr].dev = dev;
 917         rndis_per_dev_params[configNr].filter = cdc_filter;
 918
 919         return 0;
 920 }
 921 EXPORT_SYMBOL(rndis_set_param_dev);
 922
 923 int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr)
 924 {
 925         pr_debug("%s:\n", __func__);
 926         if (!vendorDescr) return -1;
 927         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
 928
 929         rndis_per_dev_params[configNr].vendorID = vendorID;
 930         rndis_per_dev_params[configNr].vendorDescr = vendorDescr;
 931
 932         return 0;
 933 }
 934 EXPORT_SYMBOL(rndis_set_param_vendor);
 935
 936 int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed)
 937 {
 938         pr_debug("%s: %u %u\n", __func__, medium, speed);
 939         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
 940
 941         rndis_per_dev_params[configNr].medium = medium;
 942         rndis_per_dev_params[configNr].speed = speed;
 943
 944         return 0;
 945 }
 946 EXPORT_SYMBOL(rndis_set_param_medium);
 947
 948 void rndis_add_hdr(struct sk_buff *skb)
 949 {
 950         struct rndis_packet_msg_type *header;
 951
 952         if (!skb)
 953                 return;
 954         header = (void *)skb_push(skb, sizeof(*header));
 955         memset(header, 0, sizeof *header);
 956         header->MessageType = cpu_to_le32(RNDIS_MSG_PACKET);
 957         header->MessageLength = cpu_to_le32(skb->len);
 958         header->DataOffset = cpu_to_le32(36);
 959         header->DataLength = cpu_to_le32(skb->len - sizeof(*header));
 960 }
 961 EXPORT_SYMBOL(rndis_add_hdr);
 962
 963 void rndis_free_response(int configNr, u8 *buf)
 964 {
 965         rndis_resp_t *r;
 966         struct list_head *act, *tmp;
 967
 968         list_for_each_safe(act, tmp,
 969                         &(rndis_per_dev_params[configNr].resp_queue))
 970         {
 971                 r = list_entry(act, rndis_resp_t, list);
 972                 if (r && r->buf == buf) {
 973                         list_del(&r->list);
 974                         kfree(r);
 975                 }
 976         }
 977 }
 978 EXPORT_SYMBOL(rndis_free_response);
 979
 980 u8 *rndis_get_next_response(int configNr, u32 *length)
 981 {
 982         rndis_resp_t *r;
 983         struct list_head *act, *tmp;
 984
 985         if (!length) return NULL;
 986
 987         list_for_each_safe(act, tmp,
 988                         &(rndis_per_dev_params[configNr].resp_queue))
 989         {
 990                 r = list_entry(act, rndis_resp_t, list);
 991                 if (!r->send) {
 992                         r->send = 1;
 993                         *length = r->length;
 994                         return r->buf;
 995                 }
 996         }
 997
 998         return NULL;
 999 }
1000 EXPORT_SYMBOL(rndis_get_next_response);
1001
1002 static rndis_resp_t *rndis_add_response(int configNr, u32 length)
1003 {
1004         rndis_resp_t *r;
1005
1006         /* NOTE: this gets copied into ether.c USB_BUFSIZ bytes ... */
1007         r = kmalloc(sizeof(rndis_resp_t) + length, GFP_ATOMIC);
1008         if (!r) return NULL;
1009
1010         r->buf = (u8 *)(r + 1);
1011         r->length = length;
1012         r->send = 0;
1013
1014         list_add_tail(&r->list,
1015                 &(rndis_per_dev_params[configNr].resp_queue));
1016         return r;
1017 }
1018
1019 int rndis_rm_hdr(struct gether *port,
1020                         struct sk_buff *skb,
1021                         struct sk_buff_head *list)
1022 {
1023         /* tmp points to a struct rndis_packet_msg_type */
1024         __le32 *tmp = (void *)skb->data;
1025
1026         /* MessageType, MessageLength */
1027         if (cpu_to_le32(RNDIS_MSG_PACKET)
1028                         != get_unaligned(tmp++)) {
1029                 dev_kfree_skb_any(skb);
1030                 return -EINVAL;
1031         }
1032         tmp++;
1033
1034         /* DataOffset, DataLength */
1035         if (!skb_pull(skb, get_unaligned_le32(tmp++) + 8)) {
1036                 dev_kfree_skb_any(skb);
1037                 return -EOVERFLOW;
1038         }
1039         skb_trim(skb, get_unaligned_le32(tmp++));
1040
1041         skb_queue_tail(list, skb);
1042         return 0;
1043 }
1044 EXPORT_SYMBOL(rndis_rm_hdr);
1045
1046 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1047
1048 static int rndis_proc_show(struct seq_file *m, void *v)
1049 {
1050         rndis_params *param = m->private;
1051
1052         seq_printf(m,
1053                          "Config Nr. %d\n"
1054                          "used      : %s\n"
1055                          "state     : %s\n"
1056                          "medium    : 0x%08X\n"
1057                          "speed     : %d\n"
1058                          "cable     : %s\n"
1059                          "vendor ID : 0x%08X\n"
1060                          "vendor    : %s\n",
1061                          param->confignr, (param->used) ? "y" : "n",
1062                          ({ char *s = "?";
1063                          switch (param->state) {
1064                          case RNDIS_UNINITIALIZED:
1065                                 s = "RNDIS_UNINITIALIZED"; break;
1066                          case RNDIS_INITIALIZED:
1067                                 s = "RNDIS_INITIALIZED"; break;
1068                          case RNDIS_DATA_INITIALIZED:
1069                                 s = "RNDIS_DATA_INITIALIZED"; break;
1070                         } s; }),
1071                          param->medium,
1072                          (param->media_state) ? 0 : param->speed*100,
1073                          (param->media_state) ? "disconnected" : "connected",
1074                          param->vendorID, param->vendorDescr);
1075         return 0;
1076 }
1077
1078 static ssize_t rndis_proc_write(struct file *file, const char __user *buffer,
1079                                 size_t count, loff_t *ppos)
1080 {
1081         rndis_params *p = PDE_DATA(file_inode(file));
1082         u32 speed = 0;
1083         int i, fl_speed = 0;
1084
1085         for (i = 0; i < count; i++) {
1086                 char c;
1087                 if (get_user(c, buffer))
1088                         return -EFAULT;
1089                 switch (c) {
1090                 case '0':
1091                 case '1':
1092                 case '2':
1093                 case '3':
1094                 case '4':
1095                 case '5':
1096                 case '6':
1097                 case '7':
1098                 case '8':
1099                 case '9':
1100                         fl_speed = 1;
1101                         speed = speed * 10 + c - '0';
1102                         break;
1103                 case 'C':
1104                 case 'c':
1105                         rndis_signal_connect(p->confignr);
1106                         break;
1107                 case 'D':
1108                 case 'd':
1109                         rndis_signal_disconnect(p->confignr);
1110                         break;
1111                 default:
1112                         if (fl_speed) p->speed = speed;
1113                         else pr_debug("%c is not valid\n", c);
1114                         break;
1115                 }
1116
1117                 buffer++;
1118         }
1119
1120         return count;
1121 }
1122
1123 static int rndis_proc_open(struct inode *inode, struct file *file)
1124 {
1125         return single_open(file, rndis_proc_show, PDE_DATA(inode));
1126 }
1127
1128 static const struct file_operations rndis_proc_fops = {
1129         .owner          = THIS_MODULE,
1130         .open           = rndis_proc_open,
1131         .read           = seq_read,
1132         .llseek         = seq_lseek,
1133         .release        = single_release,
1134         .write          = rndis_proc_write,
1135 };
1136
1137 #define NAME_TEMPLATE "driver/rndis-%03d"
1138
1139 static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
1140
1141 #endif /* CONFIG_USB_GADGET_DEBUG_FILES */
1142
1143
1144 int rndis_init(void)
1145 {
1146         u8 i;
1147
1148         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1149 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1150                 char name [20];
1151
1152                 sprintf(name, NAME_TEMPLATE, i);
1153                 rndis_connect_state[i] = proc_create_data(name, 0660, NULL,
1154                                         &rndis_proc_fops,
1155                                         (void *)(rndis_per_dev_params + i));
1156                 if (!rndis_connect_state[i]) {
1157                         pr_debug("%s: remove entries", __func__);
1158                         while (i) {
1159                                 sprintf(name, NAME_TEMPLATE, --i);
1160                                 remove_proc_entry(name, NULL);
1161                         }
1162                         pr_debug("\n");
1163                         return -EIO;
1164                 }
1165 #endif
1166                 rndis_per_dev_params[i].confignr = i;
1167                 rndis_per_dev_params[i].used = 0;
1168                 rndis_per_dev_params[i].state = RNDIS_UNINITIALIZED;
1169                 rndis_per_dev_params[i].media_state
1170                                 = RNDIS_MEDIA_STATE_DISCONNECTED;
1171                 INIT_LIST_HEAD(&(rndis_per_dev_params[i].resp_queue));
1172         }
1173
1174         return 0;
1175 }
1176
1177 void rndis_exit(void)
1178 {
1179 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1180         u8 i;
1181         char name[20];
1182
1183         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1184                 sprintf(name, NAME_TEMPLATE, i);
1185                 remove_proc_entry(name, NULL);
1186         }
1187 #endif
1188 }
1189