drivers/usb/gadget/rndis.c

   1 /*
   2  * RNDIS MSG parser
   3  *
   4  * Version:     $Id: rndis.c,v 1.19 2004/03/25 21:33:46 robert Exp $
   5  *
   6  * Authors:     Benedikt Spranger, Pengutronix
   7  *              Robert Schwebel, Pengutronix
   8  *
   9  *              This program is free software; you can redistribute it and/or
  10  *              modify it under the terms of the GNU General Public License
  11  *              version 2, as published by the Free Software Foundation.
  12  *
  13  *              This software was originally developed in conformance with
  14  *              Microsoft's Remote NDIS Specification License Agreement.
  15  *
  16  * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
  17  *              Fixed message length bug in init_response
  18  *
  19  * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
  20  *              Fixed rndis_rm_hdr length bug.
  21  *
  22  * Copyright (C) 2004 by David Brownell
  23  *              updates to merge with Linux 2.6, better match RNDIS spec
  24  */
  25
  26 #include <linux/config.h>
  27 #include <linux/module.h>
  28 #include <linux/moduleparam.h>
  29 #include <linux/kernel.h>
  30 #include <linux/errno.h>
  31 #include <linux/version.h>
  32 #include <linux/init.h>
  33 #include <linux/list.h>
  34 #include <linux/proc_fs.h>
  35 #include <linux/netdevice.h>
  36
  37 #include <asm/io.h>
  38 #include <asm/byteorder.h>
  39 #include <asm/system.h>
  40
  41
  42 #undef  RNDIS_PM
  43 #undef  VERBOSE
  44
  45 #include "rndis.h"
  46
  47
  48 /* The driver for your USB chip needs to support ep0 OUT to work with
  49  * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
  50  *
  51  * Windows hosts need an INF file like Documentation/usb/linux.inf
  52  * and will be happier if you provide the host_addr module parameter.
  53  */
  54
  55 #if 0
  56 #define DEBUG(str,args...) do { \
  57         if (rndis_debug) \
  58                 printk(KERN_DEBUG str , ## args ); \
  59         } while (0)
  60 static int rndis_debug = 0;
  61
  62 module_param (rndis_debug, bool, 0);
  63 MODULE_PARM_DESC (rndis_debug, "enable debugging");
  64
  65 #else
  66
  67 #define rndis_debug             0
  68 #define DEBUG(str,args...)      do{}while(0)
  69 #endif
  70
  71 #define RNDIS_MAX_CONFIGS       1
  72
  73 static struct proc_dir_entry *rndis_connect_dir;
  74 static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
  75
  76 static rndis_params rndis_per_dev_params [RNDIS_MAX_CONFIGS];
  77
  78 /* Driver Version */
  79 static const u32 rndis_driver_version = __constant_cpu_to_le32 (1);
  80
  81 /* Function Prototypes */
  82 static int rndis_init_response (int configNr, rndis_init_msg_type *buf);
  83 static int rndis_query_response (int configNr, rndis_query_msg_type *buf);
  84 static int rndis_set_response (int configNr, rndis_set_msg_type *buf);
  85 static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf);
  86 static int rndis_keepalive_response (int configNr,
  87                                      rndis_keepalive_msg_type *buf);
  88
  89 static rndis_resp_t *rndis_add_response (int configNr, u32 length);
  90
  91
  92 /* NDIS Functions */
  93 static int gen_ndis_query_resp (int configNr, u32 OID, rndis_resp_t *r)
  94 {
  95         int                     retval = -ENOTSUPP;
  96         u32                     length = 0;
  97         u32                     *tmp;
  98         int                     i, count;
  99         rndis_query_cmplt_type  *resp;
 100
 101         if (!r) return -ENOMEM;
 102         resp = (rndis_query_cmplt_type *) r->buf;
 103
 104         if (!resp) return -ENOMEM;
 105
 106         switch (OID) {
 107
 108         /* general oids (table 4-1) */
 109
 110         /* mandatory */
 111         case OID_GEN_SUPPORTED_LIST:
 112                 DEBUG ("%s: OID_GEN_SUPPORTED_LIST\n", __FUNCTION__);
 113                 length = sizeof (oid_supported_list);
 114                 count  = length / sizeof (u32);
 115                 tmp = (u32 *) ((u8 *)resp + 24);
 116                 for (i = 0; i < count; i++)
 117                         tmp[i] = cpu_to_le32 (oid_supported_list[i]);
 118                 retval = 0;
 119                 break;
 120
 121         /* mandatory */
 122         case OID_GEN_HARDWARE_STATUS:
 123                 DEBUG("%s: OID_GEN_HARDWARE_STATUS\n", __FUNCTION__);
 124                 length = 4;
 125                 /* Bogus question!
 126                  * Hardware must be ready to recieve high level protocols.
 127                  * BTW:
 128                  * reddite ergo quae sunt Caesaris Caesari
 129                  * et quae sunt Dei Deo!
 130                  */
 131                 *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 132                 retval = 0;
 133                 break;
 134
 135         /* mandatory */
 136         case OID_GEN_MEDIA_SUPPORTED:
 137                 DEBUG("%s: OID_GEN_MEDIA_SUPPORTED\n", __FUNCTION__);
 138                 length = 4;
 139                 *((u32 *) resp + 6) = cpu_to_le32 (
 140                                         rndis_per_dev_params [configNr].medium);
 141                 retval = 0;
 142                 break;
 143
 144         /* mandatory */
 145         case OID_GEN_MEDIA_IN_USE:
 146                 DEBUG("%s: OID_GEN_MEDIA_IN_USE\n", __FUNCTION__);
 147                 length = 4;
 148                 /* one medium, one transport... (maybe you do it better) */
 149                 *((u32 *) resp + 6) = cpu_to_le32 (
 150                                         rndis_per_dev_params [configNr].medium);
 151                 retval = 0;
 152                 break;
 153
 154         /* mandatory */
 155         case OID_GEN_MAXIMUM_FRAME_SIZE:
 156                 DEBUG("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __FUNCTION__);
 157                 if (rndis_per_dev_params [configNr].dev) {
 158                         length = 4;
 159                         *((u32 *) resp + 6) = cpu_to_le32 (
 160                                 rndis_per_dev_params [configNr].dev->mtu);
 161                         retval = 0;
 162                 } else {
 163                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 164                         retval = 0;
 165                 }
 166                 break;
 167
 168         /* mandatory */
 169         case OID_GEN_LINK_SPEED:
 170                 DEBUG("%s: OID_GEN_LINK_SPEED\n", __FUNCTION__);
 171                 length = 4;
 172                 if (rndis_per_dev_params [configNr].media_state
 173                         == NDIS_MEDIA_STATE_DISCONNECTED)
 174                     *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 175                 else
 176                     *((u32 *) resp + 6) = cpu_to_le32 (
 177                                 rndis_per_dev_params [configNr].speed);
 178                 retval = 0;
 179                 break;
 180
 181         /* mandatory */
 182         case OID_GEN_TRANSMIT_BLOCK_SIZE:
 183                 DEBUG("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __FUNCTION__);
 184                 if (rndis_per_dev_params [configNr].dev) {
 185                         length = 4;
 186                         *((u32 *) resp + 6) = cpu_to_le32 (
 187                                 rndis_per_dev_params [configNr].dev->mtu);
 188                         retval = 0;
 189                 }
 190                 break;
 191
 192         /* mandatory */
 193         case OID_GEN_RECEIVE_BLOCK_SIZE:
 194                 DEBUG("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __FUNCTION__);
 195                 if (rndis_per_dev_params [configNr].dev) {
 196                         length = 4;
 197                         *((u32 *) resp + 6) = cpu_to_le32 (
 198                                 rndis_per_dev_params [configNr].dev->mtu);
 199                         retval = 0;
 200                 }
 201                 break;
 202
 203         /* mandatory */
 204         case OID_GEN_VENDOR_ID:
 205                 DEBUG("%s: OID_GEN_VENDOR_ID\n", __FUNCTION__);
 206                 length = 4;
 207                 *((u32 *) resp + 6) = cpu_to_le32 (
 208                         rndis_per_dev_params [configNr].vendorID);
 209                 retval = 0;
 210                 break;
 211
 212         /* mandatory */
 213         case OID_GEN_VENDOR_DESCRIPTION:
 214                 DEBUG("%s: OID_GEN_VENDOR_DESCRIPTION\n", __FUNCTION__);
 215                 length = strlen (rndis_per_dev_params [configNr].vendorDescr);
 216                 memcpy ((u8 *) resp + 24,
 217                         rndis_per_dev_params [configNr].vendorDescr, length);
 218                 retval = 0;
 219                 break;
 220
 221         case OID_GEN_VENDOR_DRIVER_VERSION:
 222                 DEBUG("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __FUNCTION__);
 223                 length = 4;
 224                 /* Created as LE */
 225                 *((u32 *) resp + 6) = rndis_driver_version;
 226                 retval = 0;
 227                 break;
 228
 229         /* mandatory */
 230         case OID_GEN_CURRENT_PACKET_FILTER:
 231                 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __FUNCTION__);
 232                 length = 4;
 233                 *((u32 *) resp + 6) = cpu_to_le32 (
 234                                         rndis_per_dev_params[configNr].filter);
 235                 retval = 0;
 236                 break;
 237
 238         /* mandatory */
 239         case OID_GEN_MAXIMUM_TOTAL_SIZE:
 240                 DEBUG("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __FUNCTION__);
 241                 length = 4;
 242                 *((u32 *) resp + 6) = __constant_cpu_to_le32(
 243                                         RNDIS_MAX_TOTAL_SIZE);
 244                 retval = 0;
 245                 break;
 246
 247         /* mandatory */
 248         case OID_GEN_MEDIA_CONNECT_STATUS:
 249                 DEBUG("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __FUNCTION__);
 250                 length = 4;
 251                 *((u32 *) resp + 6) = cpu_to_le32 (
 252                                         rndis_per_dev_params [configNr]
 253                                                 .media_state);
 254                 retval = 0;
 255                 break;
 256
 257         case OID_GEN_PHYSICAL_MEDIUM:
 258                 DEBUG("%s: OID_GEN_PHYSICAL_MEDIUM\n", __FUNCTION__);
 259                 length = 4;
 260                 *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 261                 retval = 0;
 262                 break;
 263
 264         /* The RNDIS specification is incomplete/wrong.   Some versions
 265          * of MS-Windows expect OIDs that aren't specified there.  Other
 266          * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
 267          */
 268         case OID_GEN_MAC_OPTIONS:               /* from WinME */
 269                 DEBUG("%s: OID_GEN_MAC_OPTIONS\n", __FUNCTION__);
 270                 length = 4;
 271                 *((u32 *) resp + 6) = __constant_cpu_to_le32(
 272                           NDIS_MAC_OPTION_RECEIVE_SERIALIZED
 273                         | NDIS_MAC_OPTION_FULL_DUPLEX);
 274                 retval = 0;
 275                 break;
 276
 277         /* statistics OIDs (table 4-2) */
 278
 279         /* mandatory */
 280         case OID_GEN_XMIT_OK:
 281                 DEBUG("%s: OID_GEN_XMIT_OK\n", __FUNCTION__);
 282                 if (rndis_per_dev_params [configNr].stats) {
 283                         length = 4;
 284                         *((u32 *) resp + 6) = cpu_to_le32 (
 285                             rndis_per_dev_params [configNr].stats->tx_packets -
 286                             rndis_per_dev_params [configNr].stats->tx_errors -
 287                             rndis_per_dev_params [configNr].stats->tx_dropped);
 288                         retval = 0;
 289                 } else {
 290                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 291                         retval = 0;
 292                 }
 293                 break;
 294
 295         /* mandatory */
 296         case OID_GEN_RCV_OK:
 297                 DEBUG("%s: OID_GEN_RCV_OK\n", __FUNCTION__);
 298                 if (rndis_per_dev_params [configNr].stats) {
 299                         length = 4;
 300                         *((u32 *) resp + 6) = cpu_to_le32 (
 301                             rndis_per_dev_params [configNr].stats->rx_packets -
 302                             rndis_per_dev_params [configNr].stats->rx_errors -
 303                             rndis_per_dev_params [configNr].stats->rx_dropped);
 304                         retval = 0;
 305                 } else {
 306                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 307                         retval = 0;
 308                 }
 309                 break;
 310
 311         /* mandatory */
 312         case OID_GEN_XMIT_ERROR:
 313                 DEBUG("%s: OID_GEN_XMIT_ERROR\n", __FUNCTION__);
 314                 if (rndis_per_dev_params [configNr].stats) {
 315                         length = 4;
 316                         *((u32 *) resp + 6) = cpu_to_le32 (
 317                                 rndis_per_dev_params [configNr]
 318                                         .stats->tx_errors);
 319                         retval = 0;
 320                 } else {
 321                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 322                         retval = 0;
 323                 }
 324                 break;
 325
 326         /* mandatory */
 327         case OID_GEN_RCV_ERROR:
 328                 DEBUG("%s: OID_GEN_RCV_ERROR\n", __FUNCTION__);
 329                 if (rndis_per_dev_params [configNr].stats) {
 330                         *((u32 *) resp + 6) = cpu_to_le32 (
 331                                 rndis_per_dev_params [configNr]
 332                                         .stats->rx_errors);
 333                         retval = 0;
 334                 } else {
 335                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 336                         retval = 0;
 337                 }
 338                 break;
 339
 340         /* mandatory */
 341         case OID_GEN_RCV_NO_BUFFER:
 342                 DEBUG("%s: OID_GEN_RCV_NO_BUFFER\n", __FUNCTION__);
 343                 if (rndis_per_dev_params [configNr].stats) {
 344                         *((u32 *) resp + 6) = cpu_to_le32 (
 345                                 rndis_per_dev_params [configNr]
 346                                         .stats->rx_dropped);
 347                         retval = 0;
 348                 } else {
 349                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 350                         retval = 0;
 351                 }
 352                 break;
 353
 354 #ifdef  RNDIS_OPTIONAL_STATS
 355         case OID_GEN_DIRECTED_BYTES_XMIT:
 356                 DEBUG("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __FUNCTION__);
 357                 /*
 358                  * Aunt Tilly's size of shoes
 359                  * minus antarctica count of penguins
 360                  * divided by weight of Alpha Centauri
 361                  */
 362                 if (rndis_per_dev_params [configNr].stats) {
 363                         length = 4;
 364                         *((u32 *) resp + 6) = cpu_to_le32 (
 365                                 (rndis_per_dev_params [configNr]
 366                                         .stats->tx_packets -
 367                                  rndis_per_dev_params [configNr]
 368                                          .stats->tx_errors -
 369                                  rndis_per_dev_params [configNr]
 370                                          .stats->tx_dropped)
 371                                 * 123);
 372                         retval = 0;
 373                 } else {
 374                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 375                         retval = 0;
 376                 }
 377                 break;
 378
 379         case OID_GEN_DIRECTED_FRAMES_XMIT:
 380                 DEBUG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __FUNCTION__);
 381                 /* dito */
 382                 if (rndis_per_dev_params [configNr].stats) {
 383                         length = 4;
 384                         *((u32 *) resp + 6) = cpu_to_le32 (
 385                                 (rndis_per_dev_params [configNr]
 386                                         .stats->tx_packets -
 387                                  rndis_per_dev_params [configNr]
 388                                          .stats->tx_errors -
 389                                  rndis_per_dev_params [configNr]
 390                                          .stats->tx_dropped)
 391                                 / 123);
 392                         retval = 0;
 393                 } else {
 394                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 395                         retval = 0;
 396                 }
 397                 break;
 398
 399         case OID_GEN_MULTICAST_BYTES_XMIT:
 400                 DEBUG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __FUNCTION__);
 401                 if (rndis_per_dev_params [configNr].stats) {
 402                         *((u32 *) resp + 6) = cpu_to_le32 (
 403                                 rndis_per_dev_params [configNr]
 404                                         .stats->multicast*1234);
 405                         retval = 0;
 406                 } else {
 407                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 408                         retval = 0;
 409                 }
 410                 break;
 411
 412         case OID_GEN_MULTICAST_FRAMES_XMIT:
 413                 DEBUG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __FUNCTION__);
 414                 if (rndis_per_dev_params [configNr].stats) {
 415                         *((u32 *) resp + 6) = cpu_to_le32 (
 416                                 rndis_per_dev_params [configNr]
 417                                         .stats->multicast);
 418                         retval = 0;
 419                 } else {
 420                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 421                         retval = 0;
 422                 }
 423                 break;
 424
 425         case OID_GEN_BROADCAST_BYTES_XMIT:
 426                 DEBUG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __FUNCTION__);
 427                 if (rndis_per_dev_params [configNr].stats) {
 428                         *((u32 *) resp + 6) = cpu_to_le32 (
 429                                 rndis_per_dev_params [configNr]
 430                                         .stats->tx_packets/42*255);
 431                         retval = 0;
 432                 } else {
 433                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 434                         retval = 0;
 435                 }
 436                 break;
 437
 438         case OID_GEN_BROADCAST_FRAMES_XMIT:
 439                 DEBUG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __FUNCTION__);
 440                 if (rndis_per_dev_params [configNr].stats) {
 441                         *((u32 *) resp + 6) = cpu_to_le32 (
 442                                 rndis_per_dev_params [configNr]
 443                                         .stats->tx_packets/42);
 444                         retval = 0;
 445                 } else {
 446                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 447                         retval = 0;
 448                 }
 449                 break;
 450
 451         case OID_GEN_DIRECTED_BYTES_RCV:
 452                 DEBUG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __FUNCTION__);
 453                 *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 454                 retval = 0;
 455                 break;
 456
 457         case OID_GEN_DIRECTED_FRAMES_RCV:
 458                 DEBUG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __FUNCTION__);
 459                 *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 460                 retval = 0;
 461                 break;
 462
 463         case OID_GEN_MULTICAST_BYTES_RCV:
 464                 DEBUG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __FUNCTION__);
 465                 if (rndis_per_dev_params [configNr].stats) {
 466                         *((u32 *) resp + 6) = cpu_to_le32 (
 467                                 rndis_per_dev_params [configNr]
 468                                         .stats->multicast * 1111);
 469                         retval = 0;
 470                 } else {
 471                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 472                         retval = 0;
 473                 }
 474                 break;
 475
 476         case OID_GEN_MULTICAST_FRAMES_RCV:
 477                 DEBUG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __FUNCTION__);
 478                 if (rndis_per_dev_params [configNr].stats) {
 479                         *((u32 *) resp + 6) = cpu_to_le32 (
 480                                 rndis_per_dev_params [configNr]
 481                                         .stats->multicast);
 482                         retval = 0;
 483                 } else {
 484                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 485                         retval = 0;
 486                 }
 487                 break;
 488
 489         case OID_GEN_BROADCAST_BYTES_RCV:
 490                 DEBUG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __FUNCTION__);
 491                 if (rndis_per_dev_params [configNr].stats) {
 492                         *((u32 *) resp + 6) = cpu_to_le32 (
 493                                 rndis_per_dev_params [configNr]
 494                                         .stats->rx_packets/42*255);
 495                         retval = 0;
 496                 } else {
 497                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 498                         retval = 0;
 499                 }
 500                 break;
 501
 502         case OID_GEN_BROADCAST_FRAMES_RCV:
 503                 DEBUG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __FUNCTION__);
 504                 if (rndis_per_dev_params [configNr].stats) {
 505                         *((u32 *) resp + 6) = cpu_to_le32 (
 506                                 rndis_per_dev_params [configNr]
 507                                         .stats->rx_packets/42);
 508                         retval = 0;
 509                 } else {
 510                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 511                         retval = 0;
 512                 }
 513                 break;
 514
 515         case OID_GEN_RCV_CRC_ERROR:
 516                 DEBUG("%s: OID_GEN_RCV_CRC_ERROR\n", __FUNCTION__);
 517                 if (rndis_per_dev_params [configNr].stats) {
 518                         *((u32 *) resp + 6) = cpu_to_le32 (
 519                                 rndis_per_dev_params [configNr]
 520                                         .stats->rx_crc_errors);
 521                         retval = 0;
 522                 } else {
 523                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 524                         retval = 0;
 525                 }
 526                 break;
 527
 528         case OID_GEN_TRANSMIT_QUEUE_LENGTH:
 529                 DEBUG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __FUNCTION__);
 530                 *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 531                 retval = 0;
 532                 break;
 533 #endif  /* RNDIS_OPTIONAL_STATS */
 534
 535         /* ieee802.3 OIDs (table 4-3) */
 536
 537         /* mandatory */
 538         case OID_802_3_PERMANENT_ADDRESS:
 539                 DEBUG("%s: OID_802_3_PERMANENT_ADDRESS\n", __FUNCTION__);
 540                 if (rndis_per_dev_params [configNr].dev) {
 541                         length = ETH_ALEN;
 542                         memcpy ((u8 *) resp + 24,
 543                                 rndis_per_dev_params [configNr].host_mac,
 544                                 length);
 545                         retval = 0;
 546                 } else {
 547                         *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 548                         retval = 0;
 549                 }
 550                 break;
 551
 552         /* mandatory */
 553         case OID_802_3_CURRENT_ADDRESS:
 554                 DEBUG("%s: OID_802_3_CURRENT_ADDRESS\n", __FUNCTION__);
 555                 if (rndis_per_dev_params [configNr].dev) {
 556                         length = ETH_ALEN;
 557                         memcpy ((u8 *) resp + 24,
 558                                 rndis_per_dev_params [configNr].host_mac,
 559                                 length);
 560                         retval = 0;
 561                 }
 562                 break;
 563
 564         /* mandatory */
 565         case OID_802_3_MULTICAST_LIST:
 566                 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 567                 length = 4;
 568                 /* Multicast base address only */
 569                 *((u32 *) resp + 6) = __constant_cpu_to_le32 (0xE0000000);
 570                 retval = 0;
 571                 break;
 572
 573         /* mandatory */
 574         case OID_802_3_MAXIMUM_LIST_SIZE:
 575                 DEBUG("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __FUNCTION__);
 576                  length = 4;
 577                 /* Multicast base address only */
 578                 *((u32 *) resp + 6) = __constant_cpu_to_le32 (1);
 579                 retval = 0;
 580                 break;
 581
 582         case OID_802_3_MAC_OPTIONS:
 583                 DEBUG("%s: OID_802_3_MAC_OPTIONS\n", __FUNCTION__);
 584                 break;
 585
 586         /* ieee802.3 statistics OIDs (table 4-4) */
 587
 588         /* mandatory */
 589         case OID_802_3_RCV_ERROR_ALIGNMENT:
 590                 DEBUG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __FUNCTION__);
 591                 if (rndis_per_dev_params [configNr].stats)
 592                 {
 593                         length = 4;
 594                         *((u32 *) resp + 6) = cpu_to_le32 (
 595                                 rndis_per_dev_params [configNr]
 596                                         .stats->rx_frame_errors);
 597                         retval = 0;
 598                 }
 599                 break;
 600
 601         /* mandatory */
 602         case OID_802_3_XMIT_ONE_COLLISION:
 603                 DEBUG("%s: OID_802_3_XMIT_ONE_COLLISION\n", __FUNCTION__);
 604                 length = 4;
 605                 *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 606                 retval = 0;
 607                 break;
 608
 609         /* mandatory */
 610         case OID_802_3_XMIT_MORE_COLLISIONS:
 611                 DEBUG("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __FUNCTION__);
 612                 length = 4;
 613                 *((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
 614                 retval = 0;
 615                 break;
 616
 617 #ifdef  RNDIS_OPTIONAL_STATS
 618         case OID_802_3_XMIT_DEFERRED:
 619                 DEBUG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
 620                 /* TODO */
 621                 break;
 622
 623         case OID_802_3_XMIT_MAX_COLLISIONS:
 624                 DEBUG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
 625                 /* TODO */
 626                 break;
 627
 628         case OID_802_3_RCV_OVERRUN:
 629                 DEBUG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
 630                 /* TODO */
 631                 break;
 632
 633         case OID_802_3_XMIT_UNDERRUN:
 634                 DEBUG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
 635                 /* TODO */
 636                 break;
 637
 638         case OID_802_3_XMIT_HEARTBEAT_FAILURE:
 639                 DEBUG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
 640                 /* TODO */
 641                 break;
 642
 643         case OID_802_3_XMIT_TIMES_CRS_LOST:
 644                 DEBUG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
 645                 /* TODO */
 646                 break;
 647
 648         case OID_802_3_XMIT_LATE_COLLISIONS:
 649                 DEBUG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __FUNCTION__);
 650                 /* TODO */
 651                 break;
 652 #endif  /* RNDIS_OPTIONAL_STATS */
 653
 654 #ifdef  RNDIS_PM
 655         /* power management OIDs (table 4-5) */
 656         case OID_PNP_CAPABILITIES:
 657                 DEBUG("%s: OID_PNP_CAPABILITIES\n", __FUNCTION__);
 658
 659                 /* just PM, and remote wakeup on link status change
 660                  * (not magic packet or pattern match)
 661                  */
 662                 length = sizeof (struct NDIS_PNP_CAPABILITIES);
 663                 memset (resp, 0, length);
 664                 {
 665                         struct NDIS_PNP_CAPABILITIES *caps = (void *) resp;
 666
 667                         caps->Flags = NDIS_DEVICE_WAKE_UP_ENABLE;
 668                         caps->WakeUpCapabilities.MinLinkChangeWakeUp
 669                                  = NdisDeviceStateD3;
 670
 671                         /* FIXME then use usb_gadget_wakeup(), and
 672                          * set USB_CONFIG_ATT_WAKEUP in config desc
 673                          */
 674                 }
 675                 retval = 0;
 676                 break;
 677         case OID_PNP_QUERY_POWER:
 678                 DEBUG("%s: OID_PNP_QUERY_POWER\n", __FUNCTION__);
 679                 /* sure, handle any power state that maps to USB suspend */
 680                 retval = 0;
 681                 break;
 682 #endif
 683
 684         default:
 685                 printk (KERN_WARNING "%s: query unknown OID 0x%08X\n",
 686                          __FUNCTION__, OID);
 687         }
 688
 689         resp->InformationBufferOffset = __constant_cpu_to_le32 (16);
 690         resp->InformationBufferLength = cpu_to_le32 (length);
 691         resp->MessageLength = cpu_to_le32 (24 + length);
 692         r->length = 24 + length;
 693         return retval;
 694 }
 695
 696 static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len,
 697                               rndis_resp_t *r)
 698 {
 699         rndis_set_cmplt_type            *resp;
 700         int                             i, retval = -ENOTSUPP;
 701         struct rndis_params             *params;
 702
 703         if (!r)
 704                 return -ENOMEM;
 705         resp = (rndis_set_cmplt_type *) r->buf;
 706         if (!resp)
 707                 return -ENOMEM;
 708
 709         DEBUG("set OID %08x value, len %d:\n", OID, buf_len);
 710         for (i = 0; i < buf_len; i += 16) {
 711                 DEBUG ("%03d: "
 712                         " %02x %02x %02x %02x"
 713                         " %02x %02x %02x %02x"
 714                         " %02x %02x %02x %02x"
 715                         " %02x %02x %02x %02x"
 716                         "\n",
 717                         i,
 718                         buf[i], buf [i+1],
 719                                 buf[i+2], buf[i+3],
 720                         buf[i+4], buf [i+5],
 721                                 buf[i+6], buf[i+7],
 722                         buf[i+8], buf [i+9],
 723                                 buf[i+10], buf[i+11],
 724                         buf[i+12], buf [i+13],
 725                                 buf[i+14], buf[i+15]);
 726         }
 727
 728         switch (OID) {
 729         case OID_GEN_CURRENT_PACKET_FILTER:
 730                 params = &rndis_per_dev_params [configNr];
 731                 retval = 0;
 732
 733                 /* FIXME use these NDIS_PACKET_TYPE_* bitflags to
 734                  * filter packets in hard_start_xmit()
 735                  * NDIS_PACKET_TYPE_x == CDC_PACKET_TYPE_x for x in:
 736                  *      PROMISCUOUS, DIRECTED,
 737                  *      MULTICAST, ALL_MULTICAST, BROADCAST
 738                  */
 739                 params->filter = cpu_to_le32p((u32 *)buf);
 740                 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
 741                         __FUNCTION__, params->filter);
 742
 743                 /* this call has a significant side effect:  it's
 744                  * what makes the packet flow start and stop, like
 745                  * activating the CDC Ethernet altsetting.
 746                  */
 747                 if (params->filter) {
 748                         params->state = RNDIS_DATA_INITIALIZED;
 749                         netif_carrier_on(params->dev);
 750                         if (netif_running(params->dev))
 751                                 netif_wake_queue (params->dev);
 752                 } else {
 753                         params->state = RNDIS_INITIALIZED;
 754                         netif_carrier_off (params->dev);
 755                         netif_stop_queue (params->dev);
 756                 }
 757                 break;
 758
 759         case OID_802_3_MULTICAST_LIST:
 760                 /* I think we can ignore this */
 761                 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
 762                 retval = 0;
 763                 break;
 764 #if 0
 765         case OID_GEN_RNDIS_CONFIG_PARAMETER:
 766                 {
 767                 struct rndis_config_parameter   *param;
 768                 param = (struct rndis_config_parameter *) buf;
 769                 DEBUG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
 770                         __FUNCTION__,
 771                         min(cpu_to_le32(param->ParameterNameLength),80),
 772                         buf + param->ParameterNameOffset);
 773                 retval = 0;
 774                 }
 775                 break;
 776 #endif
 777
 778 #ifdef  RNDIS_PM
 779         case OID_PNP_SET_POWER:
 780                 DEBUG ("OID_PNP_SET_POWER\n");
 781                 /* sure, handle any power state that maps to USB suspend */
 782                 retval = 0;
 783                 break;
 784
 785         case OID_PNP_ENABLE_WAKE_UP:
 786                 /* always-connected ... */
 787                 DEBUG ("OID_PNP_ENABLE_WAKE_UP\n");
 788                 retval = 0;
 789                 break;
 790
 791         // no PM resume patterns supported (specified where?)
 792         // so OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN always fails
 793 #endif
 794
 795         default:
 796                 printk (KERN_WARNING "%s: set unknown OID 0x%08X, size %d\n",
 797                          __FUNCTION__, OID, buf_len);
 798         }
 799
 800         return retval;
 801 }
 802
 803 /*
 804  * Response Functions
 805  */
 806
 807 static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
 808 {
 809         rndis_init_cmplt_type   *resp;
 810         rndis_resp_t            *r;
 811
 812         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 813
 814         r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
 815
 816         if (!r) return -ENOMEM;
 817
 818         resp = (rndis_init_cmplt_type *) r->buf;
 819
 820         if (!resp) return -ENOMEM;
 821
 822         resp->MessageType = __constant_cpu_to_le32 (
 823                         REMOTE_NDIS_INITIALIZE_CMPLT);
 824         resp->MessageLength = __constant_cpu_to_le32 (52);
 825         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 826         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 827         resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
 828         resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
 829         resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
 830         resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
 831         resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
 832         resp->MaxTransferSize = cpu_to_le32 (
 833                   rndis_per_dev_params [configNr].dev->mtu
 834                 + sizeof (struct ethhdr)
 835                 + sizeof (struct rndis_packet_msg_type)
 836                 + 22);
 837         resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
 838         resp->AFListOffset = __constant_cpu_to_le32 (0);
 839         resp->AFListSize = __constant_cpu_to_le32 (0);
 840
 841         if (rndis_per_dev_params [configNr].ack)
 842             rndis_per_dev_params [configNr].ack (
 843                         rndis_per_dev_params [configNr].dev);
 844
 845         return 0;
 846 }
 847
 848 static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
 849 {
 850         rndis_query_cmplt_type *resp;
 851         rndis_resp_t            *r;
 852
 853         // DEBUG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
 854         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
 855
 856         /*
 857          * we need more memory:
 858          * oid_supported_list is the largest answer
 859          */
 860         r = rndis_add_response (configNr, sizeof (oid_supported_list));
 861
 862         if (!r) return -ENOMEM;
 863         resp = (rndis_query_cmplt_type *) r->buf;
 864
 865         if (!resp) return -ENOMEM;
 866
 867         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
 868         resp->MessageLength = __constant_cpu_to_le32 (24);
 869         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 870
 871         if (gen_ndis_query_resp (configNr, cpu_to_le32 (buf->OID), r)) {
 872                 /* OID not supported */
 873                 resp->Status = __constant_cpu_to_le32 (
 874                                 RNDIS_STATUS_NOT_SUPPORTED);
 875                 resp->InformationBufferLength = __constant_cpu_to_le32 (0);
 876                 resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
 877         } else
 878                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 879
 880         if (rndis_per_dev_params [configNr].ack)
 881             rndis_per_dev_params [configNr].ack (
 882                         rndis_per_dev_params [configNr].dev);
 883         return 0;
 884 }
 885
 886 static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
 887 {
 888         u32                     BufLength, BufOffset;
 889         rndis_set_cmplt_type    *resp;
 890         rndis_resp_t            *r;
 891
 892         r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
 893
 894         if (!r) return -ENOMEM;
 895         resp = (rndis_set_cmplt_type *) r->buf;
 896         if (!resp) return -ENOMEM;
 897
 898         BufLength = cpu_to_le32 (buf->InformationBufferLength);
 899         BufOffset = cpu_to_le32 (buf->InformationBufferOffset);
 900
 901 #ifdef  VERBOSE
 902         DEBUG("%s: Length: %d\n", __FUNCTION__, BufLength);
 903         DEBUG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
 904         DEBUG("%s: InfoBuffer: ", __FUNCTION__);
 905
 906         for (i = 0; i < BufLength; i++) {
 907                 DEBUG ("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
 908         }
 909
 910         DEBUG ("\n");
 911 #endif
 912
 913         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
 914         resp->MessageLength = __constant_cpu_to_le32 (16);
 915         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 916         if (gen_ndis_set_resp (configNr, cpu_to_le32 (buf->OID),
 917                                ((u8 *) buf) + 8 + BufOffset, BufLength, r))
 918             resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
 919         else resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 920
 921         if (rndis_per_dev_params [configNr].ack)
 922             rndis_per_dev_params [configNr].ack (
 923                         rndis_per_dev_params [configNr].dev);
 924
 925         return 0;
 926 }
 927
 928 static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
 929 {
 930         rndis_reset_cmplt_type  *resp;
 931         rndis_resp_t            *r;
 932
 933         r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type));
 934
 935         if (!r) return -ENOMEM;
 936         resp = (rndis_reset_cmplt_type *) r->buf;
 937         if (!resp) return -ENOMEM;
 938
 939         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
 940         resp->MessageLength = __constant_cpu_to_le32 (16);
 941         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 942         /* resent information */
 943         resp->AddressingReset = __constant_cpu_to_le32 (1);
 944
 945         if (rndis_per_dev_params [configNr].ack)
 946             rndis_per_dev_params [configNr].ack (
 947                         rndis_per_dev_params [configNr].dev);
 948
 949         return 0;
 950 }
 951
 952 static int rndis_keepalive_response (int configNr,
 953                                      rndis_keepalive_msg_type *buf)
 954 {
 955         rndis_keepalive_cmplt_type      *resp;
 956         rndis_resp_t                    *r;
 957
 958         /* host "should" check only in RNDIS_DATA_INITIALIZED state */
 959
 960         r = rndis_add_response (configNr, sizeof (rndis_keepalive_cmplt_type));
 961         resp = (rndis_keepalive_cmplt_type *) r->buf;
 962         if (!resp) return -ENOMEM;
 963
 964         resp->MessageType = __constant_cpu_to_le32 (
 965                         REMOTE_NDIS_KEEPALIVE_CMPLT);
 966         resp->MessageLength = __constant_cpu_to_le32 (16);
 967         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
 968         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
 969
 970         if (rndis_per_dev_params [configNr].ack)
 971             rndis_per_dev_params [configNr].ack (
 972                         rndis_per_dev_params [configNr].dev);
 973
 974         return 0;
 975 }
 976
 977
 978 /*
 979  * Device to Host Comunication
 980  */
 981 static int rndis_indicate_status_msg (int configNr, u32 status)
 982 {
 983         rndis_indicate_status_msg_type  *resp;
 984         rndis_resp_t                    *r;
 985
 986         if (rndis_per_dev_params [configNr].state == RNDIS_UNINITIALIZED)
 987             return -ENOTSUPP;
 988
 989         r = rndis_add_response (configNr,
 990                                 sizeof (rndis_indicate_status_msg_type));
 991         if (!r) return -ENOMEM;
 992
 993         resp = (rndis_indicate_status_msg_type *) r->buf;
 994         if (!resp) return -ENOMEM;
 995
 996         resp->MessageType = __constant_cpu_to_le32 (
 997                         REMOTE_NDIS_INDICATE_STATUS_MSG);
 998         resp->MessageLength = __constant_cpu_to_le32 (20);
 999         resp->Status = cpu_to_le32 (status);
1000         resp->StatusBufferLength = __constant_cpu_to_le32 (0);
1001         resp->StatusBufferOffset = __constant_cpu_to_le32 (0);
1002
1003         if (rndis_per_dev_params [configNr].ack)
1004             rndis_per_dev_params [configNr].ack (
1005                         rndis_per_dev_params [configNr].dev);
1006         return 0;
1007 }
1008
1009 int rndis_signal_connect (int configNr)
1010 {
1011         rndis_per_dev_params [configNr].media_state
1012                         = NDIS_MEDIA_STATE_CONNECTED;
1013         return rndis_indicate_status_msg (configNr,
1014                                           RNDIS_STATUS_MEDIA_CONNECT);
1015 }
1016
1017 int rndis_signal_disconnect (int configNr)
1018 {
1019         rndis_per_dev_params [configNr].media_state
1020                         = NDIS_MEDIA_STATE_DISCONNECTED;
1021         return rndis_indicate_status_msg (configNr,
1022                                           RNDIS_STATUS_MEDIA_DISCONNECT);
1023 }
1024
1025 void rndis_set_host_mac (int configNr, const u8 *addr)
1026 {
1027         rndis_per_dev_params [configNr].host_mac = addr;
1028 }
1029
1030 /*
1031  * Message Parser
1032  */
1033 int rndis_msg_parser (u8 configNr, u8 *buf)
1034 {
1035         u32 MsgType, MsgLength, *tmp;
1036         struct rndis_params             *params;
1037
1038         if (!buf)
1039                 return -ENOMEM;
1040
1041         tmp = (u32 *) buf;
1042         MsgType   = cpu_to_le32p(tmp++);
1043         MsgLength = cpu_to_le32p(tmp++);
1044
1045         if (configNr >= RNDIS_MAX_CONFIGS)
1046                 return -ENOTSUPP;
1047         params = &rndis_per_dev_params [configNr];
1048
1049         /* For USB: responses may take up to 10 seconds */
1050         switch (MsgType)
1051         {
1052         case REMOTE_NDIS_INITIALIZE_MSG:
1053                 DEBUG("%s: REMOTE_NDIS_INITIALIZE_MSG\n",
1054                         __FUNCTION__ );
1055                 params->state = RNDIS_INITIALIZED;
1056                 return  rndis_init_response (configNr,
1057                                              (rndis_init_msg_type *) buf);
1058
1059         case REMOTE_NDIS_HALT_MSG:
1060                 DEBUG("%s: REMOTE_NDIS_HALT_MSG\n",
1061                         __FUNCTION__ );
1062                 params->state = RNDIS_UNINITIALIZED;
1063                 if (params->dev) {
1064                         netif_carrier_off (params->dev);
1065                         netif_stop_queue (params->dev);
1066                 }
1067                 return 0;
1068
1069         case REMOTE_NDIS_QUERY_MSG:
1070                 return rndis_query_response (configNr,
1071                                              (rndis_query_msg_type *) buf);
1072
1073         case REMOTE_NDIS_SET_MSG:
1074                 return rndis_set_response (configNr,
1075                                            (rndis_set_msg_type *) buf);
1076
1077         case REMOTE_NDIS_RESET_MSG:
1078                 DEBUG("%s: REMOTE_NDIS_RESET_MSG\n",
1079                         __FUNCTION__ );
1080                 return rndis_reset_response (configNr,
1081                                              (rndis_reset_msg_type *) buf);
1082
1083         case REMOTE_NDIS_KEEPALIVE_MSG:
1084                 /* For USB: host does this every 5 seconds */
1085 #ifdef  VERBOSE
1086                 DEBUG("%s: REMOTE_NDIS_KEEPALIVE_MSG\n",
1087                         __FUNCTION__ );
1088 #endif
1089                 return rndis_keepalive_response (configNr,
1090                                                  (rndis_keepalive_msg_type *)
1091                                                  buf);
1092
1093         default:
1094                 /* At least Windows XP emits some undefined RNDIS messages.
1095                  * In one case those messages seemed to relate to the host
1096                  * suspending itself.
1097                  */
1098                 printk (KERN_WARNING
1099                         "%s: unknown RNDIS message 0x%08X len %d\n",
1100                         __FUNCTION__ , MsgType, MsgLength);
1101                 {
1102                         unsigned i;
1103                         for (i = 0; i < MsgLength; i += 16) {
1104                                 DEBUG ("%03d: "
1105                                         " %02x %02x %02x %02x"
1106                                         " %02x %02x %02x %02x"
1107                                         " %02x %02x %02x %02x"
1108                                         " %02x %02x %02x %02x"
1109                                         "\n",
1110                                         i,
1111                                         buf[i], buf [i+1],
1112                                                 buf[i+2], buf[i+3],
1113                                         buf[i+4], buf [i+5],
1114                                                 buf[i+6], buf[i+7],
1115                                         buf[i+8], buf [i+9],
1116                                                 buf[i+10], buf[i+11],
1117                                         buf[i+12], buf [i+13],
1118                                                 buf[i+14], buf[i+15]);
1119                         }
1120                 }
1121                 break;
1122         }
1123
1124         return -ENOTSUPP;
1125 }
1126
1127 int rndis_register (int (* rndis_control_ack) (struct net_device *))
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", __FUNCTION__, i);
1136                         return i;
1137                 }
1138         }
1139         DEBUG("failed\n");
1140
1141         return -1;
1142 }
1143
1144 void rndis_deregister (int configNr)
1145 {
1146         DEBUG("%s: \n", __FUNCTION__ );
1147
1148         if (configNr >= RNDIS_MAX_CONFIGS) return;
1149         rndis_per_dev_params [configNr].used = 0;
1150
1151         return;
1152 }
1153
1154 int rndis_set_param_dev (u8 configNr, struct net_device *dev,
1155                          struct net_device_stats *stats)
1156 {
1157         DEBUG("%s:\n", __FUNCTION__ );
1158         if (!dev || !stats) return -1;
1159         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1160
1161         rndis_per_dev_params [configNr].dev = dev;
1162         rndis_per_dev_params [configNr].stats = stats;
1163
1164         return 0;
1165 }
1166
1167 int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr)
1168 {
1169         DEBUG("%s:\n", __FUNCTION__ );
1170         if (!vendorDescr) return -1;
1171         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1172
1173         rndis_per_dev_params [configNr].vendorID = vendorID;
1174         rndis_per_dev_params [configNr].vendorDescr = vendorDescr;
1175
1176         return 0;
1177 }
1178
1179 int rndis_set_param_medium (u8 configNr, u32 medium, u32 speed)
1180 {
1181         DEBUG("%s:\n", __FUNCTION__ );
1182         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1183
1184         rndis_per_dev_params [configNr].medium = medium;
1185         rndis_per_dev_params [configNr].speed = speed;
1186
1187         return 0;
1188 }
1189
1190 void rndis_add_hdr (struct sk_buff *skb)
1191 {
1192         if (!skb) return;
1193         skb_push (skb, sizeof (struct rndis_packet_msg_type));
1194         memset (skb->data, 0, sizeof (struct rndis_packet_msg_type));
1195         *((u32 *) skb->data) = __constant_cpu_to_le32 (1);
1196         *((u32 *) skb->data + 1) = cpu_to_le32(skb->len);
1197         *((u32 *) skb->data + 2) = __constant_cpu_to_le32 (36);
1198         *((u32 *) skb->data + 3) = cpu_to_le32(skb->len - 44);
1199
1200         return;
1201 }
1202
1203 void rndis_free_response (int configNr, u8 *buf)
1204 {
1205         rndis_resp_t            *r;
1206         struct list_head        *act, *tmp;
1207
1208         list_for_each_safe (act, tmp,
1209                             &(rndis_per_dev_params [configNr].resp_queue))
1210         {
1211                 r = list_entry (act, rndis_resp_t, list);
1212                 if (r && r->buf == buf) {
1213                         list_del (&r->list);
1214                         kfree (r);
1215                 }
1216         }
1217 }
1218
1219 u8 *rndis_get_next_response (int configNr, u32 *length)
1220 {
1221         rndis_resp_t            *r;
1222         struct list_head        *act, *tmp;
1223
1224         if (!length) return NULL;
1225
1226         list_for_each_safe (act, tmp,
1227                             &(rndis_per_dev_params [configNr].resp_queue))
1228         {
1229                 r = list_entry (act, rndis_resp_t, list);
1230                 if (!r->send) {
1231                         r->send = 1;
1232                         *length = r->length;
1233                         return r->buf;
1234                 }
1235         }
1236
1237         return NULL;
1238 }
1239
1240 static rndis_resp_t *rndis_add_response (int configNr, u32 length)
1241 {
1242         rndis_resp_t    *r;
1243
1244         r = kmalloc (sizeof (rndis_resp_t) + length, GFP_ATOMIC);
1245         if (!r) return NULL;
1246
1247         r->buf = (u8 *) (r + 1);
1248         r->length = length;
1249         r->send = 0;
1250
1251         list_add_tail (&r->list,
1252                        &(rndis_per_dev_params [configNr].resp_queue));
1253         return r;
1254 }
1255
1256 int rndis_rm_hdr (u8 *buf, u32 *length)
1257 {
1258         u32 i, messageLen, dataOffset, *tmp;
1259
1260         tmp = (u32 *) buf;
1261
1262         if (!buf || !length) return -1;
1263         if (cpu_to_le32p(tmp++) != 1) return -1;
1264
1265         messageLen = cpu_to_le32p(tmp++);
1266         dataOffset = cpu_to_le32p(tmp++) + 8;
1267
1268         if (messageLen < dataOffset || messageLen > *length) return -1;
1269
1270         for (i = dataOffset; i < messageLen; i++)
1271                 buf [i - dataOffset] = buf [i];
1272
1273         *length = messageLen - dataOffset;
1274
1275         return 0;
1276 }
1277
1278 int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof,
1279                      void *data)
1280 {
1281         char *out = page;
1282         int len;
1283         rndis_params *param = (rndis_params *) data;
1284
1285         out += snprintf (out, count,
1286                          "Config Nr. %d\n"
1287                          "used      : %s\n"
1288                          "state     : %s\n"
1289                          "medium    : 0x%08X\n"
1290                          "speed     : %d\n"
1291                          "cable     : %s\n"
1292                          "vendor ID : 0x%08X\n"
1293                          "vendor    : %s\n",
1294                          param->confignr, (param->used) ? "y" : "n",
1295                          ({ char *s = "?";
1296                          switch (param->state) {
1297                          case RNDIS_UNINITIALIZED:
1298                                 s = "RNDIS_UNINITIALIZED"; break;
1299                          case RNDIS_INITIALIZED:
1300                                 s = "RNDIS_INITIALIZED"; break;
1301                          case RNDIS_DATA_INITIALIZED:
1302                                 s = "RNDIS_DATA_INITIALIZED"; break;
1303                         }; s; }),
1304                          param->medium,
1305                          (param->media_state) ? 0 : param->speed*100,
1306                          (param->media_state) ? "disconnected" : "connected",
1307                          param->vendorID, param->vendorDescr);
1308
1309         len = out - page;
1310         len -= off;
1311
1312         if (len < count) {
1313                 *eof = 1;
1314                 if (len <= 0)
1315                         return 0;
1316         } else
1317                 len = count;
1318
1319         *start = page + off;
1320         return len;
1321 }
1322
1323 int rndis_proc_write (struct file *file, const char __user *buffer,
1324                       unsigned long count, void *data)
1325 {
1326         rndis_params *p = data;
1327         u32 speed = 0;
1328         int i, fl_speed = 0;
1329
1330         for (i = 0; i < count; i++) {
1331                 char c;
1332                 if (get_user(c, buffer))
1333                         return -EFAULT;
1334                 switch (c) {
1335                 case '0':
1336                 case '1':
1337                 case '2':
1338                 case '3':
1339                 case '4':
1340                 case '5':
1341                 case '6':
1342                 case '7':
1343                 case '8':
1344                 case '9':
1345                         fl_speed = 1;
1346                         speed = speed*10 + c - '0';
1347                         break;
1348                 case 'C':
1349                 case 'c':
1350                         rndis_signal_connect (p->confignr);
1351                         break;
1352                 case 'D':
1353                 case 'd':
1354                         rndis_signal_disconnect(p->confignr);
1355                         break;
1356                 default:
1357                         if (fl_speed) p->speed = speed;
1358                         else DEBUG ("%c is not valid\n", c);
1359                         break;
1360                 }
1361
1362                 buffer++;
1363         }
1364
1365         return count;
1366 }
1367
1368 int __init rndis_init (void)
1369 {
1370         u8 i;
1371         char name [4];
1372
1373         /* FIXME this should probably be /proc/driver/rndis,
1374          * and only if debugging is enabled
1375          */
1376
1377         if (!(rndis_connect_dir =  proc_mkdir ("rndis", NULL))) {
1378                 printk (KERN_ERR "%s: couldn't create /proc/rndis entry",
1379                         __FUNCTION__);
1380                 return -EIO;
1381         }
1382
1383         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1384                 sprintf (name, "%03d", i);
1385                 if (!(rndis_connect_state [i]
1386                                 = create_proc_entry (name, 0660,
1387                                                 rndis_connect_dir)))
1388                 {
1389                         DEBUG ("%s :remove entries", __FUNCTION__);
1390                         for (i--; i > 0; i--) {
1391                                 sprintf (name, "%03d", i);
1392                                 remove_proc_entry (name, rndis_connect_dir);
1393                         }
1394                         DEBUG ("\n");
1395
1396                         remove_proc_entry ("000", rndis_connect_dir);
1397                         remove_proc_entry ("rndis", NULL);
1398                         return -EIO;
1399                 }
1400                 rndis_connect_state [i]->nlink = 1;
1401                 rndis_connect_state [i]->write_proc = rndis_proc_write;
1402                 rndis_connect_state [i]->read_proc = rndis_proc_read;
1403                 rndis_connect_state [i]->data = (void *)
1404                                 (rndis_per_dev_params + i);
1405                 rndis_per_dev_params [i].confignr = i;
1406                 rndis_per_dev_params [i].used = 0;
1407                 rndis_per_dev_params [i].state = RNDIS_UNINITIALIZED;
1408                 rndis_per_dev_params [i].media_state
1409                                 = NDIS_MEDIA_STATE_DISCONNECTED;
1410                 INIT_LIST_HEAD (&(rndis_per_dev_params [i].resp_queue));
1411         }
1412
1413         return 0;
1414 }
1415
1416 void rndis_exit (void)
1417 {
1418         u8 i;
1419         char name [4];
1420
1421         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1422                 sprintf (name, "%03d", i);
1423                 remove_proc_entry (name, rndis_connect_dir);
1424         }
1425         remove_proc_entry ("rndis", NULL);
1426         return;
1427 }
1428