git.sur5r.net Git - u-boot/blob - drivers/usb/gadget/rndis.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * RNDIS MSG parser
   4  *
   5  * Authors:     Benedikt Spranger, Pengutronix
   6  *              Robert Schwebel, Pengutronix
   7  *
   8  *              This software was originally developed in conformance with
   9  *              Microsoft's Remote NDIS Specification License Agreement.
  10  *
  11  * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
  12  *              Fixed message length bug in init_response
  13  *
  14  * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
  15  *              Fixed rndis_rm_hdr length bug.
  16  *
  17  * Copyright (C) 2004 by David Brownell
  18  *              updates to merge with Linux 2.6, better match RNDIS spec
  19  */
  20
  21 #include <common.h>
  22 #include <net.h>
  23 #include <malloc.h>
  24 #include <linux/types.h>
  25 #include <linux/list.h>
  26 #include <linux/netdevice.h>
  27
  28 #include <asm/byteorder.h>
  29 #include <asm/unaligned.h>
  30 #include <linux/errno.h>
  31
  32 #undef  RNDIS_PM
  33 #undef  RNDIS_WAKEUP
  34 #undef  VERBOSE
  35
  36 #include "rndis.h"
  37
  38 #define ETH_ALEN        6               /* Octets in one ethernet addr   */
  39 #define ETH_HLEN        14              /* Total octets in header.       */
  40 #define ETH_ZLEN        60              /* Min. octets in frame sans FCS */
  41 #define ETH_DATA_LEN    1500            /* Max. octets in payload        */
  42 #define ETH_FRAME_LEN   PKTSIZE_ALIGN   /* Max. octets in frame sans FCS */
  43
  44 /*
  45  * The driver for your USB chip needs to support ep0 OUT to work with
  46  * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
  47  *
  48  * Windows hosts need an INF file like Documentation/usb/linux.inf
  49  * and will be happier if you provide the host_addr module parameter.
  50  */
  51
  52 #define RNDIS_MAX_CONFIGS       1
  53
  54 static rndis_params rndis_per_dev_params[RNDIS_MAX_CONFIGS];
  55
  56 /* Driver Version */
  57 static const __le32 rndis_driver_version = __constant_cpu_to_le32(1);
  58
  59 /* Function Prototypes */
  60 static rndis_resp_t *rndis_add_response(int configNr, u32 length);
  61
  62
  63 /* supported OIDs */
  64 static const u32 oid_supported_list[] = {
  65         /* the general stuff */
  66         OID_GEN_SUPPORTED_LIST,
  67         OID_GEN_HARDWARE_STATUS,
  68         OID_GEN_MEDIA_SUPPORTED,
  69         OID_GEN_MEDIA_IN_USE,
  70         OID_GEN_MAXIMUM_FRAME_SIZE,
  71         OID_GEN_LINK_SPEED,
  72         OID_GEN_TRANSMIT_BLOCK_SIZE,
  73         OID_GEN_RECEIVE_BLOCK_SIZE,
  74         OID_GEN_VENDOR_ID,
  75         OID_GEN_VENDOR_DESCRIPTION,
  76         OID_GEN_VENDOR_DRIVER_VERSION,
  77         OID_GEN_CURRENT_PACKET_FILTER,
  78         OID_GEN_MAXIMUM_TOTAL_SIZE,
  79         OID_GEN_MEDIA_CONNECT_STATUS,
  80         OID_GEN_PHYSICAL_MEDIUM,
  81 #if 0
  82         OID_GEN_RNDIS_CONFIG_PARAMETER,
  83 #endif
  84
  85         /* the statistical stuff */
  86         OID_GEN_XMIT_OK,
  87         OID_GEN_RCV_OK,
  88         OID_GEN_XMIT_ERROR,
  89         OID_GEN_RCV_ERROR,
  90         OID_GEN_RCV_NO_BUFFER,
  91 #ifdef  RNDIS_OPTIONAL_STATS
  92         OID_GEN_DIRECTED_BYTES_XMIT,
  93         OID_GEN_DIRECTED_FRAMES_XMIT,
  94         OID_GEN_MULTICAST_BYTES_XMIT,
  95         OID_GEN_MULTICAST_FRAMES_XMIT,
  96         OID_GEN_BROADCAST_BYTES_XMIT,
  97         OID_GEN_BROADCAST_FRAMES_XMIT,
  98         OID_GEN_DIRECTED_BYTES_RCV,
  99         OID_GEN_DIRECTED_FRAMES_RCV,
 100         OID_GEN_MULTICAST_BYTES_RCV,
 101         OID_GEN_MULTICAST_FRAMES_RCV,
 102         OID_GEN_BROADCAST_BYTES_RCV,
 103         OID_GEN_BROADCAST_FRAMES_RCV,
 104         OID_GEN_RCV_CRC_ERROR,
 105         OID_GEN_TRANSMIT_QUEUE_LENGTH,
 106 #endif  /* RNDIS_OPTIONAL_STATS */
 107
 108         /* mandatory 802.3 */
 109         /* the general stuff */
 110         OID_802_3_PERMANENT_ADDRESS,
 111         OID_802_3_CURRENT_ADDRESS,
 112         OID_802_3_MULTICAST_LIST,
 113         OID_802_3_MAC_OPTIONS,
 114         OID_802_3_MAXIMUM_LIST_SIZE,
 115
 116         /* the statistical stuff */
 117         OID_802_3_RCV_ERROR_ALIGNMENT,
 118         OID_802_3_XMIT_ONE_COLLISION,
 119         OID_802_3_XMIT_MORE_COLLISIONS,
 120 #ifdef  RNDIS_OPTIONAL_STATS
 121         OID_802_3_XMIT_DEFERRED,
 122         OID_802_3_XMIT_MAX_COLLISIONS,
 123         OID_802_3_RCV_OVERRUN,
 124         OID_802_3_XMIT_UNDERRUN,
 125         OID_802_3_XMIT_HEARTBEAT_FAILURE,
 126         OID_802_3_XMIT_TIMES_CRS_LOST,
 127         OID_802_3_XMIT_LATE_COLLISIONS,
 128 #endif  /* RNDIS_OPTIONAL_STATS */
 129
 130 #ifdef  RNDIS_PM
 131         /* PM and wakeup are mandatory for USB: */
 132
 133         /* power management */
 134         OID_PNP_CAPABILITIES,
 135         OID_PNP_QUERY_POWER,
 136         OID_PNP_SET_POWER,
 137
 138 #ifdef  RNDIS_WAKEUP
 139         /* wake up host */
 140         OID_PNP_ENABLE_WAKE_UP,
 141         OID_PNP_ADD_WAKE_UP_PATTERN,
 142         OID_PNP_REMOVE_WAKE_UP_PATTERN,
 143 #endif  /* RNDIS_WAKEUP */
 144 #endif  /* RNDIS_PM */
 145 };
 146
 147
 148 /* NDIS Functions */
 149 static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
 150                                 unsigned buf_len, rndis_resp_t *r)
 151 {
 152         int                             retval = -ENOTSUPP;
 153         u32                             length = 4;     /* usually */
 154         __le32                          *outbuf;
 155         int                             i, count;
 156         rndis_query_cmplt_type          *resp;
 157         rndis_params                    *params;
 158
 159         if (!r)
 160                 return -ENOMEM;
 161         resp = (rndis_query_cmplt_type *) r->buf;
 162
 163         if (!resp)
 164                 return -ENOMEM;
 165
 166 #if defined(DEBUG) && defined(DEBUG_VERBOSE)
 167         if (buf_len) {
 168                 debug("query OID %08x value, len %d:\n", OID, buf_len);
 169                 for (i = 0; i < buf_len; i += 16) {
 170                         debug("%03d: %08x %08x %08x %08x\n", i,
 171                                 get_unaligned_le32(&buf[i]),
 172                                 get_unaligned_le32(&buf[i + 4]),
 173                                 get_unaligned_le32(&buf[i + 8]),
 174                                 get_unaligned_le32(&buf[i + 12]));
 175                 }
 176         }
 177 #endif
 178
 179         /* response goes here, right after the header */
 180         outbuf = (__le32 *) &resp[1];
 181         resp->InformationBufferOffset = __constant_cpu_to_le32(16);
 182
 183         params = &rndis_per_dev_params[configNr];
 184         switch (OID) {
 185
 186         /* general oids (table 4-1) */
 187
 188         /* mandatory */
 189         case OID_GEN_SUPPORTED_LIST:
 190                 debug("%s: OID_GEN_SUPPORTED_LIST\n", __func__);
 191                 length = sizeof(oid_supported_list);
 192                 count  = length / sizeof(u32);
 193                 for (i = 0; i < count; i++)
 194                         outbuf[i] = cpu_to_le32(oid_supported_list[i]);
 195                 retval = 0;
 196                 break;
 197
 198         /* mandatory */
 199         case OID_GEN_HARDWARE_STATUS:
 200                 debug("%s: OID_GEN_HARDWARE_STATUS\n", __func__);
 201                 /*
 202                  * Bogus question!
 203                  * Hardware must be ready to receive high level protocols.
 204                  * BTW:
 205                  * reddite ergo quae sunt Caesaris Caesari
 206                  * et quae sunt Dei Deo!
 207                  */
 208                 *outbuf = __constant_cpu_to_le32(0);
 209                 retval = 0;
 210                 break;
 211
 212         /* mandatory */
 213         case OID_GEN_MEDIA_SUPPORTED:
 214                 debug("%s: OID_GEN_MEDIA_SUPPORTED\n", __func__);
 215                 *outbuf = cpu_to_le32(params->medium);
 216                 retval = 0;
 217                 break;
 218
 219         /* mandatory */
 220         case OID_GEN_MEDIA_IN_USE:
 221                 debug("%s: OID_GEN_MEDIA_IN_USE\n", __func__);
 222                 /* one medium, one transport... (maybe you do it better) */
 223                 *outbuf = cpu_to_le32(params->medium);
 224                 retval = 0;
 225                 break;
 226
 227         /* mandatory */
 228         case OID_GEN_MAXIMUM_FRAME_SIZE:
 229                 debug("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__);
 230                 if (params->dev) {
 231                         *outbuf = cpu_to_le32(params->mtu);
 232                         retval = 0;
 233                 }
 234                 break;
 235
 236         /* mandatory */
 237         case OID_GEN_LINK_SPEED:
 238 #if defined(DEBUG) && defined(DEBUG_VERBOSE)
 239                 debug("%s: OID_GEN_LINK_SPEED\n", __func__);
 240 #endif
 241                 if (params->media_state == NDIS_MEDIA_STATE_DISCONNECTED)
 242                         *outbuf = __constant_cpu_to_le32(0);
 243                 else
 244                         *outbuf = cpu_to_le32(params->speed);
 245                 retval = 0;
 246                 break;
 247
 248         /* mandatory */
 249         case OID_GEN_TRANSMIT_BLOCK_SIZE:
 250                 debug("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__);
 251                 if (params->dev) {
 252                         *outbuf = cpu_to_le32(params->mtu);
 253                         retval = 0;
 254                 }
 255                 break;
 256
 257         /* mandatory */
 258         case OID_GEN_RECEIVE_BLOCK_SIZE:
 259                 debug("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__);
 260                 if (params->dev) {
 261                         *outbuf = cpu_to_le32(params->mtu);
 262                         retval = 0;
 263                 }
 264                 break;
 265
 266         /* mandatory */
 267         case OID_GEN_VENDOR_ID:
 268                 debug("%s: OID_GEN_VENDOR_ID\n", __func__);
 269                 *outbuf = cpu_to_le32(params->vendorID);
 270                 retval = 0;
 271                 break;
 272
 273         /* mandatory */
 274         case OID_GEN_VENDOR_DESCRIPTION:
 275                 debug("%s: OID_GEN_VENDOR_DESCRIPTION\n", __func__);
 276                 length = strlen(params->vendorDescr);
 277                 memcpy(outbuf, params->vendorDescr, length);
 278                 retval = 0;
 279                 break;
 280
 281         case OID_GEN_VENDOR_DRIVER_VERSION:
 282                 debug("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __func__);
 283                 /* Created as LE */
 284                 *outbuf = rndis_driver_version;
 285                 retval = 0;
 286                 break;
 287
 288         /* mandatory */
 289         case OID_GEN_CURRENT_PACKET_FILTER:
 290                 debug("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __func__);
 291                 *outbuf = cpu_to_le32(*params->filter);
 292                 retval = 0;
 293                 break;
 294
 295         /* mandatory */
 296         case OID_GEN_MAXIMUM_TOTAL_SIZE:
 297                 debug("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__);
 298                 *outbuf = __constant_cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
 299                 retval = 0;
 300                 break;
 301
 302         /* mandatory */
 303         case OID_GEN_MEDIA_CONNECT_STATUS:
 304 #if defined(DEBUG) && defined(DEBUG_VERBOSE)
 305                 debug("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __func__);
 306 #endif
 307                 *outbuf = cpu_to_le32(params->media_state);
 308                 retval = 0;
 309                 break;
 310
 311         case OID_GEN_PHYSICAL_MEDIUM:
 312                 debug("%s: OID_GEN_PHYSICAL_MEDIUM\n", __func__);
 313                 *outbuf = __constant_cpu_to_le32(0);
 314                 retval = 0;
 315                 break;
 316
 317         /*
 318          * The RNDIS specification is incomplete/wrong.   Some versions
 319          * of MS-Windows expect OIDs that aren't specified there.  Other
 320          * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
 321          */
 322         case OID_GEN_MAC_OPTIONS:               /* from WinME */
 323                 debug("%s: OID_GEN_MAC_OPTIONS\n", __func__);
 324                 *outbuf = __constant_cpu_to_le32(
 325                                   NDIS_MAC_OPTION_RECEIVE_SERIALIZED
 326                                 | NDIS_MAC_OPTION_FULL_DUPLEX);
 327                 retval = 0;
 328                 break;
 329
 330         /* statistics OIDs (table 4-2) */
 331
 332         /* mandatory */
 333         case OID_GEN_XMIT_OK:
 334 #if defined(DEBUG) && defined(DEBUG_VERBOSE)
 335                 debug("%s: OID_GEN_XMIT_OK\n", __func__);
 336 #endif
 337                 if (params->stats) {
 338                         *outbuf = cpu_to_le32(
 339                                         params->stats->tx_packets -
 340                                         params->stats->tx_errors -
 341                                         params->stats->tx_dropped);
 342                         retval = 0;
 343                 }
 344                 break;
 345
 346         /* mandatory */
 347         case OID_GEN_RCV_OK:
 348 #if defined(DEBUG) && defined(DEBUG_VERBOSE)
 349                 debug("%s: OID_GEN_RCV_OK\n", __func__);
 350 #endif
 351                 if (params->stats) {
 352                         *outbuf = cpu_to_le32(
 353                                         params->stats->rx_packets -
 354                                         params->stats->rx_errors -
 355                                         params->stats->rx_dropped);
 356                         retval = 0;
 357                 }
 358                 break;
 359
 360         /* mandatory */
 361         case OID_GEN_XMIT_ERROR:
 362 #if defined(DEBUG) && defined(DEBUG_VERBOSE)
 363                 debug("%s: OID_GEN_XMIT_ERROR\n", __func__);
 364 #endif
 365                 if (params->stats) {
 366                         *outbuf = cpu_to_le32(params->stats->tx_errors);
 367                         retval = 0;
 368                 }
 369                 break;
 370
 371         /* mandatory */
 372         case OID_GEN_RCV_ERROR:
 373 #if defined(DEBUG) && defined(DEBUG_VERBOSE)
 374                 debug("%s: OID_GEN_RCV_ERROR\n", __func__);
 375 #endif
 376                 if (params->stats) {
 377                         *outbuf = cpu_to_le32(params->stats->rx_errors);
 378                         retval = 0;
 379                 }
 380                 break;
 381
 382         /* mandatory */
 383         case OID_GEN_RCV_NO_BUFFER:
 384                 debug("%s: OID_GEN_RCV_NO_BUFFER\n", __func__);
 385                 if (params->stats) {
 386                         *outbuf = cpu_to_le32(params->stats->rx_dropped);
 387                         retval = 0;
 388                 }
 389                 break;
 390
 391 #ifdef  RNDIS_OPTIONAL_STATS
 392         case OID_GEN_DIRECTED_BYTES_XMIT:
 393                 debug("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __func__);
 394                 /*
 395                  * Aunt Tilly's size of shoes
 396                  * minus antarctica count of penguins
 397                  * divided by weight of Alpha Centauri
 398                  */
 399                 if (params->stats) {
 400                         *outbuf = cpu_to_le32(
 401                                         (params->stats->tx_packets -
 402                                          params->stats->tx_errors -
 403                                          params->stats->tx_dropped)
 404                                         * 123);
 405                         retval = 0;
 406                 }
 407                 break;
 408
 409         case OID_GEN_DIRECTED_FRAMES_XMIT:
 410                 debug("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __func__);
 411                 /* dito */
 412                 if (params->stats) {
 413                         *outbuf = cpu_to_le32(
 414                                         (params->stats->tx_packets -
 415                                          params->stats->tx_errors -
 416                                          params->stats->tx_dropped)
 417                                         / 123);
 418                         retval = 0;
 419                 }
 420                 break;
 421
 422         case OID_GEN_MULTICAST_BYTES_XMIT:
 423                 debug("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __func__);
 424                 if (params->stats) {
 425                         *outbuf = cpu_to_le32(params->stats->multicast * 1234);
 426                         retval = 0;
 427                 }
 428                 break;
 429
 430         case OID_GEN_MULTICAST_FRAMES_XMIT:
 431                 debug("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __func__);
 432                 if (params->stats) {
 433                         *outbuf = cpu_to_le32(params->stats->multicast);
 434                         retval = 0;
 435                 }
 436                 break;
 437
 438         case OID_GEN_BROADCAST_BYTES_XMIT:
 439                 debug("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __func__);
 440                 if (params->stats) {
 441                         *outbuf = cpu_to_le32(params->stats->tx_packets/42*255);
 442                         retval = 0;
 443                 }
 444                 break;
 445
 446         case OID_GEN_BROADCAST_FRAMES_XMIT:
 447                 debug("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __func__);
 448                 if (params->stats) {
 449                         *outbuf = cpu_to_le32(params->stats->tx_packets / 42);
 450                         retval = 0;
 451                 }
 452                 break;
 453
 454         case OID_GEN_DIRECTED_BYTES_RCV:
 455                 debug("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __func__);
 456                 *outbuf = __constant_cpu_to_le32(0);
 457                 retval = 0;
 458                 break;
 459
 460         case OID_GEN_DIRECTED_FRAMES_RCV:
 461                 debug("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __func__);
 462                 *outbuf = __constant_cpu_to_le32(0);
 463                 retval = 0;
 464                 break;
 465
 466         case OID_GEN_MULTICAST_BYTES_RCV:
 467                 debug("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __func__);
 468                 if (params->stats) {
 469                         *outbuf = cpu_to_le32(params->stats->multicast * 1111);
 470                         retval = 0;
 471                 }
 472                 break;
 473
 474         case OID_GEN_MULTICAST_FRAMES_RCV:
 475                 debug("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __func__);
 476                 if (params->stats) {
 477                         *outbuf = cpu_to_le32(params->stats->multicast);
 478                         retval = 0;
 479                 }
 480                 break;
 481
 482         case OID_GEN_BROADCAST_BYTES_RCV:
 483                 debug("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __func__);
 484                 if (params->stats) {
 485                         *outbuf = cpu_to_le32(params->stats->rx_packets/42*255);
 486                         retval = 0;
 487                 }
 488                 break;
 489
 490         case OID_GEN_BROADCAST_FRAMES_RCV:
 491                 debug("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __func__);
 492                 if (params->stats) {
 493                         *outbuf = cpu_to_le32(params->stats->rx_packets / 42);
 494                         retval = 0;
 495                 }
 496                 break;
 497
 498         case OID_GEN_RCV_CRC_ERROR:
 499                 debug("%s: OID_GEN_RCV_CRC_ERROR\n", __func__);
 500                 if (params->stats) {
 501                         *outbuf = cpu_to_le32(params->stats->rx_crc_errors);
 502                         retval = 0;
 503                 }
 504                 break;
 505
 506         case OID_GEN_TRANSMIT_QUEUE_LENGTH:
 507                 debug("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __func__);
 508                 *outbuf = __constant_cpu_to_le32(0);
 509                 retval = 0;
 510                 break;
 511 #endif  /* RNDIS_OPTIONAL_STATS */
 512
 513         /* ieee802.3 OIDs (table 4-3) */
 514
 515         /* mandatory */
 516         case OID_802_3_PERMANENT_ADDRESS:
 517                 debug("%s: OID_802_3_PERMANENT_ADDRESS\n", __func__);
 518                 if (params->dev) {
 519                         length = ETH_ALEN;
 520                         memcpy(outbuf, params->host_mac, length);
 521                         retval = 0;
 522                 }
 523                 break;
 524
 525         /* mandatory */
 526         case OID_802_3_CURRENT_ADDRESS:
 527                 debug("%s: OID_802_3_CURRENT_ADDRESS\n", __func__);
 528                 if (params->dev) {
 529                         length = ETH_ALEN;
 530                         memcpy(outbuf, params->host_mac, length);
 531                         retval = 0;
 532                 }
 533                 break;
 534
 535         /* mandatory */
 536         case OID_802_3_MULTICAST_LIST:
 537                 debug("%s: OID_802_3_MULTICAST_LIST\n", __func__);
 538                 /* Multicast base address only */
 539                 *outbuf = __constant_cpu_to_le32(0xE0000000);
 540                 retval = 0;
 541                 break;
 542
 543         /* mandatory */
 544         case OID_802_3_MAXIMUM_LIST_SIZE:
 545                 debug("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __func__);
 546                 /* Multicast base address only */
 547                 *outbuf = __constant_cpu_to_le32(1);
 548                 retval = 0;
 549                 break;
 550
 551         case OID_802_3_MAC_OPTIONS:
 552                 debug("%s: OID_802_3_MAC_OPTIONS\n", __func__);
 553                 break;
 554
 555         /* ieee802.3 statistics OIDs (table 4-4) */
 556
 557         /* mandatory */
 558         case OID_802_3_RCV_ERROR_ALIGNMENT:
 559                 debug("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__);
 560                 if (params->stats) {
 561                         *outbuf = cpu_to_le32(params->stats->rx_frame_errors);
 562                         retval = 0;
 563                 }
 564                 break;
 565
 566         /* mandatory */
 567         case OID_802_3_XMIT_ONE_COLLISION:
 568                 debug("%s: OID_802_3_XMIT_ONE_COLLISION\n", __func__);
 569                 *outbuf = __constant_cpu_to_le32(0);
 570                 retval = 0;
 571                 break;
 572
 573         /* mandatory */
 574         case OID_802_3_XMIT_MORE_COLLISIONS:
 575                 debug("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __func__);
 576                 *outbuf = __constant_cpu_to_le32(0);
 577                 retval = 0;
 578                 break;
 579
 580 #ifdef  RNDIS_OPTIONAL_STATS
 581         case OID_802_3_XMIT_DEFERRED:
 582                 debug("%s: OID_802_3_XMIT_DEFERRED\n", __func__);
 583                 /* TODO */
 584                 break;
 585
 586         case OID_802_3_XMIT_MAX_COLLISIONS:
 587                 debug("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __func__);
 588                 /* TODO */
 589                 break;
 590
 591         case OID_802_3_RCV_OVERRUN:
 592                 debug("%s: OID_802_3_RCV_OVERRUN\n", __func__);
 593                 /* TODO */
 594                 break;
 595
 596         case OID_802_3_XMIT_UNDERRUN:
 597                 debug("%s: OID_802_3_XMIT_UNDERRUN\n", __func__);
 598                 /* TODO */
 599                 break;
 600
 601         case OID_802_3_XMIT_HEARTBEAT_FAILURE:
 602                 debug("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __func__);
 603                 /* TODO */
 604                 break;
 605
 606         case OID_802_3_XMIT_TIMES_CRS_LOST:
 607                 debug("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __func__);
 608                 /* TODO */
 609                 break;
 610
 611         case OID_802_3_XMIT_LATE_COLLISIONS:
 612                 debug("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __func__);
 613                 /* TODO */
 614                 break;
 615 #endif  /* RNDIS_OPTIONAL_STATS */
 616
 617 #ifdef  RNDIS_PM
 618         /* power management OIDs (table 4-5) */
 619         case OID_PNP_CAPABILITIES:
 620                 debug("%s: OID_PNP_CAPABILITIES\n", __func__);
 621
 622                 /* for now, no wakeup capabilities */
 623                 length = sizeof(struct NDIS_PNP_CAPABILITIES);
 624                 memset(outbuf, 0, length);
 625                 retval = 0;
 626                 break;
 627         case OID_PNP_QUERY_POWER:
 628                 debug("%s: OID_PNP_QUERY_POWER D%d\n", __func__,
 629                                 get_unaligned_le32(buf) - 1);
 630                 /*
 631                  * only suspend is a real power state, and
 632                  * it can't be entered by OID_PNP_SET_POWER...
 633                  */
 634                 length = 0;
 635                 retval = 0;
 636                 break;
 637 #endif
 638
 639         default:
 640                 debug("%s: query unknown OID 0x%08X\n", __func__, OID);
 641         }
 642         if (retval < 0)
 643                 length = 0;
 644
 645         resp->InformationBufferLength = cpu_to_le32(length);
 646         r->length = length + sizeof *resp;
 647         resp->MessageLength = cpu_to_le32(r->length);
 648         return retval;
 649 }
 650
 651 static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len,
 652                                 rndis_resp_t *r)
 653 {
 654         rndis_set_cmplt_type            *resp;
 655         int                             retval = -ENOTSUPP;
 656         struct rndis_params             *params;
 657 #if (defined(DEBUG) && defined(DEBUG_VERBOSE)) || defined(RNDIS_PM)
 658         int                             i;
 659 #endif
 660
 661         if (!r)
 662                 return -ENOMEM;
 663         resp = (rndis_set_cmplt_type *) r->buf;
 664         if (!resp)
 665                 return -ENOMEM;
 666
 667 #if defined(DEBUG) && defined(DEBUG_VERBOSE)
 668         if (buf_len) {
 669                 debug("set OID %08x value, len %d:\n", OID, buf_len);
 670                 for (i = 0; i < buf_len; i += 16) {
 671                         debug("%03d: %08x %08x %08x %08x\n", i,
 672                                 get_unaligned_le32(&buf[i]),
 673                                 get_unaligned_le32(&buf[i + 4]),
 674                                 get_unaligned_le32(&buf[i + 8]),
 675                                 get_unaligned_le32(&buf[i + 12]));
 676                 }
 677         }
 678 #endif
 679
 680         params = &rndis_per_dev_params[configNr];
 681         switch (OID) {
 682         case OID_GEN_CURRENT_PACKET_FILTER:
 683
 684                 /*
 685                  * these NDIS_PACKET_TYPE_* bitflags are shared with
 686                  * cdc_filter; it's not RNDIS-specific
 687                  * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
 688                  *      PROMISCUOUS, DIRECTED,
 689                  *      MULTICAST, ALL_MULTICAST, BROADCAST
 690                  */
 691                 *params->filter = (u16) get_unaligned_le32(buf);
 692                 debug("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
 693                         __func__, *params->filter);
 694
 695                 /*
 696                  * this call has a significant side effect:  it's
 697                  * what makes the packet flow start and stop, like
 698                  * activating the CDC Ethernet altsetting.
 699                  */
 700 #ifdef  RNDIS_PM
 701 update_linkstate:
 702 #endif
 703                 retval = 0;
 704                 if (*params->filter)
 705                         params->state = RNDIS_DATA_INITIALIZED;
 706                 else
 707                         params->state = RNDIS_INITIALIZED;
 708                 break;
 709
 710         case OID_802_3_MULTICAST_LIST:
 711                 /* I think we can ignore this */
 712                 debug("%s: OID_802_3_MULTICAST_LIST\n", __func__);
 713                 retval = 0;
 714                 break;
 715 #if 0
 716         case OID_GEN_RNDIS_CONFIG_PARAMETER:
 717                 {
 718                 struct rndis_config_parameter   *param;
 719                 param = (struct rndis_config_parameter *) buf;
 720                 debug("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
 721                         __func__,
 722                         min(cpu_to_le32(param->ParameterNameLength), 80),
 723                         buf + param->ParameterNameOffset);
 724                 retval = 0;
 725                 }
 726                 break;
 727 #endif
 728
 729 #ifdef  RNDIS_PM
 730         case OID_PNP_SET_POWER:
 731                 /*
 732                  * The only real power state is USB suspend, and RNDIS requests
 733                  * can't enter it; this one isn't really about power.  After
 734                  * resuming, Windows forces a reset, and then SET_POWER D0.
 735                  * FIXME ... then things go batty; Windows wedges itself.
 736                  */
 737                 i = get_unaligned_le32(buf);
 738                 debug("%s: OID_PNP_SET_POWER D%d\n", __func__, i - 1);
 739                 switch (i) {
 740                 case NdisDeviceStateD0:
 741                         *params->filter = params->saved_filter;
 742                         goto update_linkstate;
 743                 case NdisDeviceStateD3:
 744                 case NdisDeviceStateD2:
 745                 case NdisDeviceStateD1:
 746                         params->saved_filter = *params->filter;
 747                         retval = 0;
 748                         break;
 749                 }
 750                 break;
 751
 752 #ifdef  RNDIS_WAKEUP
 753         /*
 754          * no wakeup support advertised, so wakeup OIDs always fail:
 755          *  - OID_PNP_ENABLE_WAKE_UP
 756          *  - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN
 757          */
 758 #endif
 759
 760 #endif  /* RNDIS_PM */
 761
 762         default:
 763                 debug("%s: set unknown OID 0x%08X, size %d\n",
 764                         __func__, OID, buf_len);
 765         }
 766
 767         return retval;
 768 }
 769
 770 /*
 771  * Response Functions
 772  */
 773
 774 static int rndis_init_response(int configNr, rndis_init_msg_type *buf)
 775 {
 776         rndis_init_cmplt_type   *resp;
 777         rndis_resp_t            *r;
 778
 779         if (!rndis_per_dev_params[configNr].dev)
 780                 return -ENOTSUPP;
 781
 782         r = rndis_add_response(configNr, sizeof(rndis_init_cmplt_type));
 783         if (!r)
 784                 return -ENOMEM;
 785         resp = (rndis_init_cmplt_type *) r->buf;
 786
 787         resp->MessageType = __constant_cpu_to_le32(
 788                         REMOTE_NDIS_INITIALIZE_CMPLT);
 789         resp->MessageLength = __constant_cpu_to_le32(52);
 790         resp->RequestID = get_unaligned(&buf->RequestID); /* Still LE in msg buffer */
 791         resp->Status = __constant_cpu_to_le32(RNDIS_STATUS_SUCCESS);
 792         resp->MajorVersion = __constant_cpu_to_le32(RNDIS_MAJOR_VERSION);
 793         resp->MinorVersion = __constant_cpu_to_le32(RNDIS_MINOR_VERSION);
 794         resp->DeviceFlags = __constant_cpu_to_le32(RNDIS_DF_CONNECTIONLESS);
 795         resp->Medium = __constant_cpu_to_le32(RNDIS_MEDIUM_802_3);
 796         resp->MaxPacketsPerTransfer = __constant_cpu_to_le32(1);
 797         resp->MaxTransferSize = cpu_to_le32(
 798                   rndis_per_dev_params[configNr].mtu
 799                 + ETHER_HDR_SIZE
 800                 + sizeof(struct rndis_packet_msg_type)
 801                 + 22);
 802         resp->PacketAlignmentFactor = __constant_cpu_to_le32(0);
 803         resp->AFListOffset = __constant_cpu_to_le32(0);
 804         resp->AFListSize = __constant_cpu_to_le32(0);
 805
 806         if (rndis_per_dev_params[configNr].ack)
 807                 rndis_per_dev_params[configNr].ack(
 808                         rndis_per_dev_params[configNr].dev);
 809
 810         return 0;
 811 }
 812
 813 static int rndis_query_response(int configNr, rndis_query_msg_type *buf)
 814 {
 815         rndis_query_cmplt_type *resp;
 816         rndis_resp_t            *r;
 817
 818         debug("%s: OID = %08X\n", __func__, get_unaligned_le32(&buf->OID));
 819         if (!rndis_per_dev_params[configNr].dev)
 820                 return -ENOTSUPP;
 821
 822         /*
 823          * we need more memory:
 824          * gen_ndis_query_resp expects enough space for
 825          * rndis_query_cmplt_type followed by data.
 826          * oid_supported_list is the largest data reply
 827          */
 828         r = rndis_add_response(configNr,
 829                 sizeof(oid_supported_list) + sizeof(rndis_query_cmplt_type));
 830         if (!r)
 831                 return -ENOMEM;
 832         resp = (rndis_query_cmplt_type *) r->buf;
 833
 834         resp->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_QUERY_CMPLT);
 835         resp->RequestID = get_unaligned(&buf->RequestID); /* Still LE in msg buffer */
 836
 837         if (gen_ndis_query_resp(configNr, get_unaligned_le32(&buf->OID),
 838                         get_unaligned_le32(&buf->InformationBufferOffset)
 839                                         + 8 + (u8 *) buf,
 840                         get_unaligned_le32(&buf->InformationBufferLength),
 841                         r)) {
 842                 /* OID not supported */
 843                 resp->Status = __constant_cpu_to_le32(
 844                                                 RNDIS_STATUS_NOT_SUPPORTED);
 845                 resp->MessageLength = __constant_cpu_to_le32(sizeof *resp);
 846                 resp->InformationBufferLength = __constant_cpu_to_le32(0);
 847                 resp->InformationBufferOffset = __constant_cpu_to_le32(0);
 848         } else
 849                 resp->Status = __constant_cpu_to_le32(RNDIS_STATUS_SUCCESS);
 850
 851         if (rndis_per_dev_params[configNr].ack)
 852                 rndis_per_dev_params[configNr].ack(
 853                         rndis_per_dev_params[configNr].dev);
 854         return 0;
 855 }
 856
 857 static int rndis_set_response(int configNr, rndis_set_msg_type *buf)
 858 {
 859         u32                     BufLength, BufOffset;
 860         rndis_set_cmplt_type    *resp;
 861         rndis_resp_t            *r;
 862
 863         r = rndis_add_response(configNr, sizeof(rndis_set_cmplt_type));
 864         if (!r)
 865                 return -ENOMEM;
 866         resp = (rndis_set_cmplt_type *) r->buf;
 867
 868         BufLength = get_unaligned_le32(&buf->InformationBufferLength);
 869         BufOffset = get_unaligned_le32(&buf->InformationBufferOffset);
 870
 871 #ifdef  VERBOSE
 872         debug("%s: Length: %d\n", __func__, BufLength);
 873         debug("%s: Offset: %d\n", __func__, BufOffset);
 874         debug("%s: InfoBuffer: ", __func__);
 875
 876         for (i = 0; i < BufLength; i++)
 877                 debug("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
 878
 879         debug("\n");
 880 #endif
 881
 882         resp->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_SET_CMPLT);
 883         resp->MessageLength = __constant_cpu_to_le32(16);
 884         resp->RequestID = get_unaligned(&buf->RequestID); /* Still LE in msg buffer */
 885         if (gen_ndis_set_resp(configNr, get_unaligned_le32(&buf->OID),
 886                         ((u8 *) buf) + 8 + BufOffset, BufLength, r))
 887                 resp->Status = __constant_cpu_to_le32(
 888                                                 RNDIS_STATUS_NOT_SUPPORTED);
 889         else
 890                 resp->Status = __constant_cpu_to_le32(RNDIS_STATUS_SUCCESS);
 891
 892         if (rndis_per_dev_params[configNr].ack)
 893                 rndis_per_dev_params[configNr].ack(
 894                         rndis_per_dev_params[configNr].dev);
 895
 896         return 0;
 897 }
 898
 899 static int rndis_reset_response(int configNr, rndis_reset_msg_type *buf)
 900 {
 901         rndis_reset_cmplt_type  *resp;
 902         rndis_resp_t            *r;
 903
 904         r = rndis_add_response(configNr, sizeof(rndis_reset_cmplt_type));
 905         if (!r)
 906                 return -ENOMEM;
 907         resp = (rndis_reset_cmplt_type *) r->buf;
 908
 909         resp->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_RESET_CMPLT);
 910         resp->MessageLength = __constant_cpu_to_le32(16);
 911         resp->Status = __constant_cpu_to_le32(RNDIS_STATUS_SUCCESS);
 912         /* resent information */
 913         resp->AddressingReset = __constant_cpu_to_le32(1);
 914
 915         if (rndis_per_dev_params[configNr].ack)
 916                 rndis_per_dev_params[configNr].ack(
 917                         rndis_per_dev_params[configNr].dev);
 918
 919         return 0;
 920 }
 921
 922 static int rndis_keepalive_response(int configNr,
 923                                         rndis_keepalive_msg_type *buf)
 924 {
 925         rndis_keepalive_cmplt_type      *resp;
 926         rndis_resp_t                    *r;
 927
 928         /* host "should" check only in RNDIS_DATA_INITIALIZED state */
 929
 930         r = rndis_add_response(configNr, sizeof(rndis_keepalive_cmplt_type));
 931         if (!r)
 932                 return -ENOMEM;
 933         resp = (rndis_keepalive_cmplt_type *) r->buf;
 934
 935         resp->MessageType = __constant_cpu_to_le32(
 936                         REMOTE_NDIS_KEEPALIVE_CMPLT);
 937         resp->MessageLength = __constant_cpu_to_le32(16);
 938         resp->RequestID = get_unaligned(&buf->RequestID); /* Still LE in msg buffer */
 939         resp->Status = __constant_cpu_to_le32(RNDIS_STATUS_SUCCESS);
 940
 941         if (rndis_per_dev_params[configNr].ack)
 942                 rndis_per_dev_params[configNr].ack(
 943                         rndis_per_dev_params[configNr].dev);
 944
 945         return 0;
 946 }
 947
 948
 949 /*
 950  * Device to Host Comunication
 951  */
 952 static int rndis_indicate_status_msg(int configNr, u32 status)
 953 {
 954         rndis_indicate_status_msg_type  *resp;
 955         rndis_resp_t                    *r;
 956
 957         if (rndis_per_dev_params[configNr].state == RNDIS_UNINITIALIZED)
 958                 return -ENOTSUPP;
 959
 960         r = rndis_add_response(configNr,
 961                                 sizeof(rndis_indicate_status_msg_type));
 962         if (!r)
 963                 return -ENOMEM;
 964         resp = (rndis_indicate_status_msg_type *) r->buf;
 965
 966         resp->MessageType = __constant_cpu_to_le32(
 967                         REMOTE_NDIS_INDICATE_STATUS_MSG);
 968         resp->MessageLength = __constant_cpu_to_le32(20);
 969         resp->Status = cpu_to_le32(status);
 970         resp->StatusBufferLength = __constant_cpu_to_le32(0);
 971         resp->StatusBufferOffset = __constant_cpu_to_le32(0);
 972
 973         if (rndis_per_dev_params[configNr].ack)
 974                 rndis_per_dev_params[configNr].ack(
 975                         rndis_per_dev_params[configNr].dev);
 976         return 0;
 977 }
 978
 979 int rndis_signal_connect(int configNr)
 980 {
 981         rndis_per_dev_params[configNr].media_state
 982                         = NDIS_MEDIA_STATE_CONNECTED;
 983         return rndis_indicate_status_msg(configNr,
 984                                           RNDIS_STATUS_MEDIA_CONNECT);
 985 }
 986
 987 int rndis_signal_disconnect(int configNr)
 988 {
 989         rndis_per_dev_params[configNr].media_state
 990                         = NDIS_MEDIA_STATE_DISCONNECTED;
 991
 992 #ifdef RNDIS_COMPLETE_SIGNAL_DISCONNECT
 993         return rndis_indicate_status_msg(configNr,
 994                                           RNDIS_STATUS_MEDIA_DISCONNECT);
 995 #else
 996         return 0;
 997 #endif
 998 }
 999
1000 void rndis_uninit(int configNr)
1001 {
1002         u8 *buf;
1003         u32 length;
1004
1005         if (configNr >= RNDIS_MAX_CONFIGS)
1006                 return;
1007         rndis_per_dev_params[configNr].used = 0;
1008         rndis_per_dev_params[configNr].state = RNDIS_UNINITIALIZED;
1009
1010         /* drain the response queue */
1011         while ((buf = rndis_get_next_response(configNr, &length)))
1012                 rndis_free_response(configNr, buf);
1013 }
1014
1015 void rndis_set_host_mac(int configNr, const u8 *addr)
1016 {
1017         rndis_per_dev_params[configNr].host_mac = addr;
1018 }
1019
1020 enum rndis_state rndis_get_state(int configNr)
1021 {
1022         if (configNr >= RNDIS_MAX_CONFIGS || configNr < 0)
1023                 return -ENOTSUPP;
1024         return rndis_per_dev_params[configNr].state;
1025 }
1026
1027 /*
1028  * Message Parser
1029  */
1030 int rndis_msg_parser(u8 configNr, u8 *buf)
1031 {
1032         u32                             MsgType, MsgLength;
1033         __le32                          *tmp;
1034         struct rndis_params             *params;
1035
1036         debug("%s: configNr = %d, %p\n", __func__, configNr, buf);
1037
1038         if (!buf)
1039                 return -ENOMEM;
1040
1041         tmp = (__le32 *) buf;
1042         MsgType   = get_unaligned_le32(tmp++);
1043         MsgLength = get_unaligned_le32(tmp++);
1044
1045         if (configNr >= RNDIS_MAX_CONFIGS)
1046                 return -ENOTSUPP;
1047         params = &rndis_per_dev_params[configNr];
1048
1049         /*
1050          * NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
1051          * rx/tx statistics and link status, in addition to KEEPALIVE traffic
1052          * and normal HC level polling to see if there's any IN traffic.
1053          */
1054
1055         /* For USB: responses may take up to 10 seconds */
1056         switch (MsgType) {
1057         case REMOTE_NDIS_INITIALIZE_MSG:
1058                 debug("%s: REMOTE_NDIS_INITIALIZE_MSG\n", __func__);
1059                 params->state = RNDIS_INITIALIZED;
1060                 return  rndis_init_response(configNr,
1061                                         (rndis_init_msg_type *) buf);
1062
1063         case REMOTE_NDIS_HALT_MSG:
1064                 debug("%s: REMOTE_NDIS_HALT_MSG\n", __func__);
1065                 params->state = RNDIS_UNINITIALIZED;
1066                 return 0;
1067
1068         case REMOTE_NDIS_QUERY_MSG:
1069                 return rndis_query_response(configNr,
1070                                         (rndis_query_msg_type *) buf);
1071
1072         case REMOTE_NDIS_SET_MSG:
1073                 return rndis_set_response(configNr,
1074                                         (rndis_set_msg_type *) buf);
1075
1076         case REMOTE_NDIS_RESET_MSG:
1077                 debug("%s: REMOTE_NDIS_RESET_MSG\n", __func__);
1078                 return rndis_reset_response(configNr,
1079                                         (rndis_reset_msg_type *) buf);
1080
1081         case REMOTE_NDIS_KEEPALIVE_MSG:
1082                 /* For USB: host does this every 5 seconds */
1083 #if defined(DEBUG) && defined(DEBUG_VERBOSE)
1084                 debug("%s: REMOTE_NDIS_KEEPALIVE_MSG\n", __func__);
1085 #endif
1086                 return rndis_keepalive_response(configNr,
1087                                         (rndis_keepalive_msg_type *) buf);
1088
1089         default:
1090                 /*
1091                  * At least Windows XP emits some undefined RNDIS messages.
1092                  * In one case those messages seemed to relate to the host
1093                  * suspending itself.
1094                  */
1095                 debug("%s: unknown RNDIS message 0x%08X len %d\n",
1096                         __func__ , MsgType, MsgLength);
1097                 {
1098                         unsigned i;
1099                         for (i = 0; i < MsgLength; i += 16) {
1100                                 debug("%03d: "
1101                                         " %02x %02x %02x %02x"
1102                                         " %02x %02x %02x %02x"
1103                                         " %02x %02x %02x %02x"
1104                                         " %02x %02x %02x %02x"
1105                                         "\n",
1106                                         i,
1107                                         buf[i], buf[i+1],
1108                                                 buf[i+2], buf[i+3],
1109                                         buf[i+4], buf[i+5],
1110                                                 buf[i+6], buf[i+7],
1111                                         buf[i+8], buf[i+9],
1112                                                 buf[i+10], buf[i+11],
1113                                         buf[i+12], buf[i+13],
1114                                                 buf[i+14], buf[i+15]);
1115                         }
1116                 }
1117                 break;
1118         }
1119
1120         return -ENOTSUPP;
1121 }
1122
1123 #ifndef CONFIG_DM_ETH
1124 int rndis_register(int (*rndis_control_ack)(struct eth_device *))
1125 #else
1126 int rndis_register(int (*rndis_control_ack)(struct udevice *))
1127 #endif
1128 {
1129         u8 i;
1130
1131         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1132                 if (!rndis_per_dev_params[i].used) {
1133                         rndis_per_dev_params[i].used = 1;
1134                         rndis_per_dev_params[i].ack = rndis_control_ack;
1135                         debug("%s: configNr = %d\n", __func__, i);
1136                         return i;
1137                 }
1138         }
1139         debug("%s failed\n", __func__);
1140
1141         return -1;
1142 }
1143
1144 void rndis_deregister(int configNr)
1145 {
1146         debug("%s: configNr = %d\n", __func__, configNr);
1147
1148         if (configNr >= RNDIS_MAX_CONFIGS)
1149                 return;
1150         rndis_per_dev_params[configNr].used = 0;
1151
1152         return;
1153 }
1154
1155 #ifndef CONFIG_DM_ETH
1156 int  rndis_set_param_dev(u8 configNr, struct eth_device *dev, int mtu,
1157                          struct net_device_stats *stats, u16 *cdc_filter)
1158 #else
1159 int  rndis_set_param_dev(u8 configNr, struct udevice *dev, int mtu,
1160                          struct net_device_stats *stats, u16 *cdc_filter)
1161 #endif
1162 {
1163         debug("%s: configNr = %d\n", __func__, configNr);
1164         if (!dev || !stats)
1165                 return -1;
1166         if (configNr >= RNDIS_MAX_CONFIGS)
1167                 return -1;
1168
1169         rndis_per_dev_params[configNr].dev = dev;
1170         rndis_per_dev_params[configNr].stats = stats;
1171         rndis_per_dev_params[configNr].mtu = mtu;
1172         rndis_per_dev_params[configNr].filter = cdc_filter;
1173
1174         return 0;
1175 }
1176
1177 int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr)
1178 {
1179         debug("%s: configNr = %d\n", __func__, configNr);
1180         if (!vendorDescr)
1181                 return -1;
1182         if (configNr >= RNDIS_MAX_CONFIGS)
1183                 return -1;
1184
1185         rndis_per_dev_params[configNr].vendorID = vendorID;
1186         rndis_per_dev_params[configNr].vendorDescr = vendorDescr;
1187
1188         return 0;
1189 }
1190
1191 int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed)
1192 {
1193         debug("%s: configNr = %d, %u %u\n", __func__, configNr, medium, speed);
1194         if (configNr >= RNDIS_MAX_CONFIGS)
1195                 return -1;
1196
1197         rndis_per_dev_params[configNr].medium = medium;
1198         rndis_per_dev_params[configNr].speed = speed;
1199
1200         return 0;
1201 }
1202
1203 void rndis_add_hdr(void *buf, int length)
1204 {
1205         struct rndis_packet_msg_type    *header;
1206
1207         header = buf;
1208         memset(header, 0, sizeof *header);
1209         header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
1210         header->MessageLength = cpu_to_le32(length + sizeof *header);
1211         header->DataOffset = __constant_cpu_to_le32(36);
1212         header->DataLength = cpu_to_le32(length);
1213 }
1214
1215 void rndis_free_response(int configNr, u8 *buf)
1216 {
1217         rndis_resp_t            *r;
1218         struct list_head        *act, *tmp;
1219
1220         list_for_each_safe(act, tmp,
1221                         &(rndis_per_dev_params[configNr].resp_queue))
1222         {
1223                 r = list_entry(act, rndis_resp_t, list);
1224                 if (r && r->buf == buf) {
1225                         list_del(&r->list);
1226                         free(r);
1227                 }
1228         }
1229 }
1230
1231 u8 *rndis_get_next_response(int configNr, u32 *length)
1232 {
1233         rndis_resp_t            *r;
1234         struct list_head        *act, *tmp;
1235
1236         if (!length)
1237                 return NULL;
1238
1239         list_for_each_safe(act, tmp,
1240                         &(rndis_per_dev_params[configNr].resp_queue))
1241         {
1242                 r = list_entry(act, rndis_resp_t, list);
1243                 if (!r->send) {
1244                         r->send = 1;
1245                         *length = r->length;
1246                         return r->buf;
1247                 }
1248         }
1249
1250         return NULL;
1251 }
1252
1253 static rndis_resp_t *rndis_add_response(int configNr, u32 length)
1254 {
1255         rndis_resp_t    *r;
1256
1257         /* NOTE:  this gets copied into ether.c USB_BUFSIZ bytes ... */
1258         r = malloc(sizeof(rndis_resp_t) + length);
1259         if (!r)
1260                 return NULL;
1261
1262         r->buf = (u8 *) (r + 1);
1263         r->length = length;
1264         r->send = 0;
1265
1266         list_add_tail(&r->list,
1267                 &(rndis_per_dev_params[configNr].resp_queue));
1268         return r;
1269 }
1270
1271 int rndis_rm_hdr(void *buf, int length)
1272 {
1273         /* tmp points to a struct rndis_packet_msg_type */
1274         __le32          *tmp = buf;
1275         int             offs, len;
1276
1277         /* MessageType, MessageLength */
1278         if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
1279                         != get_unaligned(tmp++))
1280                 return -EINVAL;
1281         tmp++;
1282
1283         /* DataOffset, DataLength */
1284         offs = get_unaligned_le32(tmp++) + 8 /* offset of DataOffset */;
1285         if (offs != sizeof(struct rndis_packet_msg_type))
1286                 debug("%s: unexpected DataOffset: %d\n", __func__, offs);
1287         if (offs >= length)
1288                 return -EOVERFLOW;
1289
1290         len = get_unaligned_le32(tmp++);
1291         if (len + sizeof(struct rndis_packet_msg_type) != length)
1292                 debug("%s: unexpected DataLength: %d, packet length=%d\n",
1293                                 __func__, len, length);
1294
1295         memmove(buf, buf + offs, len);
1296
1297         return offs;
1298 }
1299
1300 int rndis_init(void)
1301 {
1302         u8 i;
1303
1304         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1305                 rndis_per_dev_params[i].confignr = i;
1306                 rndis_per_dev_params[i].used = 0;
1307                 rndis_per_dev_params[i].state = RNDIS_UNINITIALIZED;
1308                 rndis_per_dev_params[i].media_state
1309                                 = NDIS_MEDIA_STATE_DISCONNECTED;
1310                 INIT_LIST_HEAD(&(rndis_per_dev_params[i].resp_queue));
1311         }
1312
1313         return 0;
1314 }
1315
1316 void rndis_exit(void)
1317 {
1318         /* Nothing to do */
1319 }