Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / drivers / usb / gadget / rndis.c
1 /*
2  * RNDIS MSG parser
3  *
4  * Version:     $Id: rndis.c,v 1.19 2004/03/25 21:33:46 robert Exp $
5  *
6  * Authors:     Benedikt Spranger, Pengutronix
7  *              Robert Schwebel, Pengutronix
8  *
9  *              This program is free software; you can redistribute it and/or
10  *              modify it under the terms of the GNU General Public License
11  *              version 2, as published by the Free Software Foundation.
12  *
13  *              This software was originally developed in conformance with
14  *              Microsoft's Remote NDIS Specification License Agreement.
15  *
16  * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
17  *              Fixed message length bug in init_response
18  *
19  * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
20  *              Fixed rndis_rm_hdr length bug.
21  *
22  * Copyright (C) 2004 by David Brownell
23  *              updates to merge with Linux 2.6, better match RNDIS spec
24  */
25
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/kernel.h>
29 #include <linux/errno.h>
30 #include <linux/init.h>
31 #include <linux/list.h>
32 #include <linux/proc_fs.h>
33 #include <linux/netdevice.h>
34
35 #include <asm/io.h>
36 #include <asm/byteorder.h>
37 #include <asm/system.h>
38 #include <asm/unaligned.h>
39
40
41 #undef  RNDIS_PM
42 #undef  RNDIS_WAKEUP
43 #undef  VERBOSE
44
45 #include "rndis.h"
46
47
48 /* The driver for your USB chip needs to support ep0 OUT to work with
49  * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
50  *
51  * Windows hosts need an INF file like Documentation/usb/linux.inf
52  * and will be happier if you provide the host_addr module parameter.
53  */
54
55 #if 0
56 #define DEBUG(str,args...) do { \
57         if (rndis_debug) \
58                 printk(KERN_DEBUG str , ## args ); \
59         } while (0)
60 static int rndis_debug = 0;
61
62 module_param (rndis_debug, int, 0);
63 MODULE_PARM_DESC (rndis_debug, "enable debugging");
64
65 #else
66
67 #define rndis_debug             0
68 #define DEBUG(str,args...)      do{}while(0)
69 #endif
70
71 #define RNDIS_MAX_CONFIGS       1
72
73
74 static rndis_params rndis_per_dev_params [RNDIS_MAX_CONFIGS];
75
76 /* Driver Version */
77 static const __le32 rndis_driver_version = __constant_cpu_to_le32 (1);
78
79 /* Function Prototypes */
80 static rndis_resp_t *rndis_add_response (int configNr, u32 length);
81
82
83 /* supported OIDs */
84 static const u32 oid_supported_list [] =
85 {
86         /* the general stuff */
87         OID_GEN_SUPPORTED_LIST,
88         OID_GEN_HARDWARE_STATUS,
89         OID_GEN_MEDIA_SUPPORTED,
90         OID_GEN_MEDIA_IN_USE,
91         OID_GEN_MAXIMUM_FRAME_SIZE,
92         OID_GEN_LINK_SPEED,
93         OID_GEN_TRANSMIT_BLOCK_SIZE,
94         OID_GEN_RECEIVE_BLOCK_SIZE,
95         OID_GEN_VENDOR_ID,
96         OID_GEN_VENDOR_DESCRIPTION,
97         OID_GEN_VENDOR_DRIVER_VERSION,
98         OID_GEN_CURRENT_PACKET_FILTER,
99         OID_GEN_MAXIMUM_TOTAL_SIZE,
100         OID_GEN_MEDIA_CONNECT_STATUS,
101         OID_GEN_PHYSICAL_MEDIUM,
102 #if 0
103         OID_GEN_RNDIS_CONFIG_PARAMETER,
104 #endif
105
106         /* the statistical stuff */
107         OID_GEN_XMIT_OK,
108         OID_GEN_RCV_OK,
109         OID_GEN_XMIT_ERROR,
110         OID_GEN_RCV_ERROR,
111         OID_GEN_RCV_NO_BUFFER,
112 #ifdef  RNDIS_OPTIONAL_STATS
113         OID_GEN_DIRECTED_BYTES_XMIT,
114         OID_GEN_DIRECTED_FRAMES_XMIT,
115         OID_GEN_MULTICAST_BYTES_XMIT,
116         OID_GEN_MULTICAST_FRAMES_XMIT,
117         OID_GEN_BROADCAST_BYTES_XMIT,
118         OID_GEN_BROADCAST_FRAMES_XMIT,
119         OID_GEN_DIRECTED_BYTES_RCV,
120         OID_GEN_DIRECTED_FRAMES_RCV,
121         OID_GEN_MULTICAST_BYTES_RCV,
122         OID_GEN_MULTICAST_FRAMES_RCV,
123         OID_GEN_BROADCAST_BYTES_RCV,
124         OID_GEN_BROADCAST_FRAMES_RCV,
125         OID_GEN_RCV_CRC_ERROR,
126         OID_GEN_TRANSMIT_QUEUE_LENGTH,
127 #endif  /* RNDIS_OPTIONAL_STATS */
128
129         /* mandatory 802.3 */
130         /* the general stuff */
131         OID_802_3_PERMANENT_ADDRESS,
132         OID_802_3_CURRENT_ADDRESS,
133         OID_802_3_MULTICAST_LIST,
134         OID_802_3_MAC_OPTIONS,
135         OID_802_3_MAXIMUM_LIST_SIZE,
136
137         /* the statistical stuff */
138         OID_802_3_RCV_ERROR_ALIGNMENT,
139         OID_802_3_XMIT_ONE_COLLISION,
140         OID_802_3_XMIT_MORE_COLLISIONS,
141 #ifdef  RNDIS_OPTIONAL_STATS
142         OID_802_3_XMIT_DEFERRED,
143         OID_802_3_XMIT_MAX_COLLISIONS,
144         OID_802_3_RCV_OVERRUN,
145         OID_802_3_XMIT_UNDERRUN,
146         OID_802_3_XMIT_HEARTBEAT_FAILURE,
147         OID_802_3_XMIT_TIMES_CRS_LOST,
148         OID_802_3_XMIT_LATE_COLLISIONS,
149 #endif  /* RNDIS_OPTIONAL_STATS */
150
151 #ifdef  RNDIS_PM
152         /* PM and wakeup are mandatory for USB: */
153
154         /* power management */
155         OID_PNP_CAPABILITIES,
156         OID_PNP_QUERY_POWER,
157         OID_PNP_SET_POWER,
158
159 #ifdef  RNDIS_WAKEUP
160         /* wake up host */
161         OID_PNP_ENABLE_WAKE_UP,
162         OID_PNP_ADD_WAKE_UP_PATTERN,
163         OID_PNP_REMOVE_WAKE_UP_PATTERN,
164 #endif  /* RNDIS_WAKEUP */
165 #endif  /* RNDIS_PM */
166 };
167
168
169 /* NDIS Functions */
170 static int
171 gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
172                 rndis_resp_t *r)
173 {
174         int                     retval = -ENOTSUPP;
175         u32                     length = 4;     /* usually */
176         __le32                  *outbuf;
177         int                     i, count;
178         rndis_query_cmplt_type  *resp;
179
180         if (!r) return -ENOMEM;
181         resp = (rndis_query_cmplt_type *) r->buf;
182
183         if (!resp) return -ENOMEM;
184
185         if (buf_len && rndis_debug > 1) {
186                 DEBUG("query OID %08x value, len %d:\n", OID, buf_len);
187                 for (i = 0; i < buf_len; i += 16) {
188                         DEBUG ("%03d: %08x %08x %08x %08x\n", i,
189                                 le32_to_cpup((__le32 *)&buf[i]),
190                                 le32_to_cpup((__le32 *)&buf[i + 4]),
191                                 le32_to_cpup((__le32 *)&buf[i + 8]),
192                                 le32_to_cpup((__le32 *)&buf[i + 12]));
193                 }
194         }
195
196         /* response goes here, right after the header */
197         outbuf = (__le32 *) &resp[1];
198         resp->InformationBufferOffset = __constant_cpu_to_le32 (16);
199
200         switch (OID) {
201
202         /* general oids (table 4-1) */
203
204         /* mandatory */
205         case OID_GEN_SUPPORTED_LIST:
206                 DEBUG ("%s: OID_GEN_SUPPORTED_LIST\n", __FUNCTION__);
207                 length = sizeof (oid_supported_list);
208                 count  = length / sizeof (u32);
209                 for (i = 0; i < count; i++)
210                         outbuf[i] = cpu_to_le32 (oid_supported_list[i]);
211                 retval = 0;
212                 break;
213
214         /* mandatory */
215         case OID_GEN_HARDWARE_STATUS:
216                 DEBUG("%s: OID_GEN_HARDWARE_STATUS\n", __FUNCTION__);
217                 /* Bogus question!
218                  * Hardware must be ready to receive high level protocols.
219                  * BTW:
220                  * reddite ergo quae sunt Caesaris Caesari
221                  * et quae sunt Dei Deo!
222                  */
223                 *outbuf = __constant_cpu_to_le32 (0);
224                 retval = 0;
225                 break;
226
227         /* mandatory */
228         case OID_GEN_MEDIA_SUPPORTED:
229                 DEBUG("%s: OID_GEN_MEDIA_SUPPORTED\n", __FUNCTION__);
230                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
231                 retval = 0;
232                 break;
233
234         /* mandatory */
235         case OID_GEN_MEDIA_IN_USE:
236                 DEBUG("%s: OID_GEN_MEDIA_IN_USE\n", __FUNCTION__);
237                 /* one medium, one transport... (maybe you do it better) */
238                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium);
239                 retval = 0;
240                 break;
241
242         /* mandatory */
243         case OID_GEN_MAXIMUM_FRAME_SIZE:
244                 DEBUG("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __FUNCTION__);
245                 if (rndis_per_dev_params [configNr].dev) {
246                         *outbuf = cpu_to_le32 (
247                                 rndis_per_dev_params [configNr].dev->mtu);
248                         retval = 0;
249                 }
250                 break;
251
252         /* mandatory */
253         case OID_GEN_LINK_SPEED:
254                 if (rndis_debug > 1)
255                         DEBUG("%s: OID_GEN_LINK_SPEED\n", __FUNCTION__);
256                 if (rndis_per_dev_params [configNr].media_state
257                                 == NDIS_MEDIA_STATE_DISCONNECTED)
258                         *outbuf = __constant_cpu_to_le32 (0);
259                 else
260                         *outbuf = cpu_to_le32 (
261                                 rndis_per_dev_params [configNr].speed);
262                 retval = 0;
263                 break;
264
265         /* mandatory */
266         case OID_GEN_TRANSMIT_BLOCK_SIZE:
267                 DEBUG("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __FUNCTION__);
268                 if (rndis_per_dev_params [configNr].dev) {
269                         *outbuf = cpu_to_le32 (
270                                 rndis_per_dev_params [configNr].dev->mtu);
271                         retval = 0;
272                 }
273                 break;
274
275         /* mandatory */
276         case OID_GEN_RECEIVE_BLOCK_SIZE:
277                 DEBUG("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __FUNCTION__);
278                 if (rndis_per_dev_params [configNr].dev) {
279                         *outbuf = cpu_to_le32 (
280                                 rndis_per_dev_params [configNr].dev->mtu);
281                         retval = 0;
282                 }
283                 break;
284
285         /* mandatory */
286         case OID_GEN_VENDOR_ID:
287                 DEBUG("%s: OID_GEN_VENDOR_ID\n", __FUNCTION__);
288                 *outbuf = cpu_to_le32 (
289                         rndis_per_dev_params [configNr].vendorID);
290                 retval = 0;
291                 break;
292
293         /* mandatory */
294         case OID_GEN_VENDOR_DESCRIPTION:
295                 DEBUG("%s: OID_GEN_VENDOR_DESCRIPTION\n", __FUNCTION__);
296                 length = strlen (rndis_per_dev_params [configNr].vendorDescr);
297                 memcpy (outbuf,
298                         rndis_per_dev_params [configNr].vendorDescr, length);
299                 retval = 0;
300                 break;
301
302         case OID_GEN_VENDOR_DRIVER_VERSION:
303                 DEBUG("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __FUNCTION__);
304                 /* Created as LE */
305                 *outbuf = rndis_driver_version;
306                 retval = 0;
307                 break;
308
309         /* mandatory */
310         case OID_GEN_CURRENT_PACKET_FILTER:
311                 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __FUNCTION__);
312                 *outbuf = cpu_to_le32 (*rndis_per_dev_params[configNr].filter);
313                 retval = 0;
314                 break;
315
316         /* mandatory */
317         case OID_GEN_MAXIMUM_TOTAL_SIZE:
318                 DEBUG("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __FUNCTION__);
319                 *outbuf = __constant_cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
320                 retval = 0;
321                 break;
322
323         /* mandatory */
324         case OID_GEN_MEDIA_CONNECT_STATUS:
325                 if (rndis_debug > 1)
326                         DEBUG("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __FUNCTION__);
327                 *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
328                                                 .media_state);
329                 retval = 0;
330                 break;
331
332         case OID_GEN_PHYSICAL_MEDIUM:
333                 DEBUG("%s: OID_GEN_PHYSICAL_MEDIUM\n", __FUNCTION__);
334                 *outbuf = __constant_cpu_to_le32 (0);
335                 retval = 0;
336                 break;
337
338         /* The RNDIS specification is incomplete/wrong.   Some versions
339          * of MS-Windows expect OIDs that aren't specified there.  Other
340          * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
341          */
342         case OID_GEN_MAC_OPTIONS:               /* from WinME */
343                 DEBUG("%s: OID_GEN_MAC_OPTIONS\n", __FUNCTION__);
344                 *outbuf = __constant_cpu_to_le32(
345                           NDIS_MAC_OPTION_RECEIVE_SERIALIZED
346                         | NDIS_MAC_OPTION_FULL_DUPLEX);
347                 retval = 0;
348                 break;
349
350         /* statistics OIDs (table 4-2) */
351
352         /* mandatory */
353         case OID_GEN_XMIT_OK:
354                 if (rndis_debug > 1)
355                         DEBUG("%s: OID_GEN_XMIT_OK\n", __FUNCTION__);
356                 if (rndis_per_dev_params [configNr].stats) {
357                         *outbuf = cpu_to_le32 (
358                             rndis_per_dev_params [configNr].stats->tx_packets -
359                             rndis_per_dev_params [configNr].stats->tx_errors -
360                             rndis_per_dev_params [configNr].stats->tx_dropped);
361                         retval = 0;
362                 }
363                 break;
364
365         /* mandatory */
366         case OID_GEN_RCV_OK:
367                 if (rndis_debug > 1)
368                         DEBUG("%s: OID_GEN_RCV_OK\n", __FUNCTION__);
369                 if (rndis_per_dev_params [configNr].stats) {
370                         *outbuf = cpu_to_le32 (
371                             rndis_per_dev_params [configNr].stats->rx_packets -
372                             rndis_per_dev_params [configNr].stats->rx_errors -
373                             rndis_per_dev_params [configNr].stats->rx_dropped);
374                         retval = 0;
375                 }
376                 break;
377
378         /* mandatory */
379         case OID_GEN_XMIT_ERROR:
380                 if (rndis_debug > 1)
381                         DEBUG("%s: OID_GEN_XMIT_ERROR\n", __FUNCTION__);
382                 if (rndis_per_dev_params [configNr].stats) {
383                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
384                                         .stats->tx_errors);
385                         retval = 0;
386                 }
387                 break;
388
389         /* mandatory */
390         case OID_GEN_RCV_ERROR:
391                 if (rndis_debug > 1)
392                         DEBUG("%s: OID_GEN_RCV_ERROR\n", __FUNCTION__);
393                 if (rndis_per_dev_params [configNr].stats) {
394                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
395                                         .stats->rx_errors);
396                         retval = 0;
397                 }
398                 break;
399
400         /* mandatory */
401         case OID_GEN_RCV_NO_BUFFER:
402                 DEBUG("%s: OID_GEN_RCV_NO_BUFFER\n", __FUNCTION__);
403                 if (rndis_per_dev_params [configNr].stats) {
404                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
405                                         .stats->rx_dropped);
406                         retval = 0;
407                 }
408                 break;
409
410 #ifdef  RNDIS_OPTIONAL_STATS
411         case OID_GEN_DIRECTED_BYTES_XMIT:
412                 DEBUG("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __FUNCTION__);
413                 /*
414                  * Aunt Tilly's size of shoes
415                  * minus antarctica count of penguins
416                  * divided by weight of Alpha Centauri
417                  */
418                 if (rndis_per_dev_params [configNr].stats) {
419                         *outbuf = cpu_to_le32 (
420                                 (rndis_per_dev_params [configNr]
421                                         .stats->tx_packets -
422                                  rndis_per_dev_params [configNr]
423                                          .stats->tx_errors -
424                                  rndis_per_dev_params [configNr]
425                                          .stats->tx_dropped)
426                                 * 123);
427                         retval = 0;
428                 }
429                 break;
430
431         case OID_GEN_DIRECTED_FRAMES_XMIT:
432                 DEBUG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __FUNCTION__);
433                 /* dito */
434                 if (rndis_per_dev_params [configNr].stats) {
435                         *outbuf = cpu_to_le32 (
436                                 (rndis_per_dev_params [configNr]
437                                         .stats->tx_packets -
438                                  rndis_per_dev_params [configNr]
439                                          .stats->tx_errors -
440                                  rndis_per_dev_params [configNr]
441                                          .stats->tx_dropped)
442                                 / 123);
443                         retval = 0;
444                 }
445                 break;
446
447         case OID_GEN_MULTICAST_BYTES_XMIT:
448                 DEBUG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __FUNCTION__);
449                 if (rndis_per_dev_params [configNr].stats) {
450                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
451                                         .stats->multicast*1234);
452                         retval = 0;
453                 }
454                 break;
455
456         case OID_GEN_MULTICAST_FRAMES_XMIT:
457                 DEBUG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __FUNCTION__);
458                 if (rndis_per_dev_params [configNr].stats) {
459                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
460                                         .stats->multicast);
461                         retval = 0;
462                 }
463                 break;
464
465         case OID_GEN_BROADCAST_BYTES_XMIT:
466                 DEBUG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __FUNCTION__);
467                 if (rndis_per_dev_params [configNr].stats) {
468                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
469                                         .stats->tx_packets/42*255);
470                         retval = 0;
471                 }
472                 break;
473
474         case OID_GEN_BROADCAST_FRAMES_XMIT:
475                 DEBUG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __FUNCTION__);
476                 if (rndis_per_dev_params [configNr].stats) {
477                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
478                                         .stats->tx_packets/42);
479                         retval = 0;
480                 }
481                 break;
482
483         case OID_GEN_DIRECTED_BYTES_RCV:
484                 DEBUG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __FUNCTION__);
485                 *outbuf = __constant_cpu_to_le32 (0);
486                 retval = 0;
487                 break;
488
489         case OID_GEN_DIRECTED_FRAMES_RCV:
490                 DEBUG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __FUNCTION__);
491                 *outbuf = __constant_cpu_to_le32 (0);
492                 retval = 0;
493                 break;
494
495         case OID_GEN_MULTICAST_BYTES_RCV:
496                 DEBUG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __FUNCTION__);
497                 if (rndis_per_dev_params [configNr].stats) {
498                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
499                                         .stats->multicast * 1111);
500                         retval = 0;
501                 }
502                 break;
503
504         case OID_GEN_MULTICAST_FRAMES_RCV:
505                 DEBUG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __FUNCTION__);
506                 if (rndis_per_dev_params [configNr].stats) {
507                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
508                                         .stats->multicast);
509                         retval = 0;
510                 }
511                 break;
512
513         case OID_GEN_BROADCAST_BYTES_RCV:
514                 DEBUG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __FUNCTION__);
515                 if (rndis_per_dev_params [configNr].stats) {
516                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
517                                         .stats->rx_packets/42*255);
518                         retval = 0;
519                 }
520                 break;
521
522         case OID_GEN_BROADCAST_FRAMES_RCV:
523                 DEBUG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __FUNCTION__);
524                 if (rndis_per_dev_params [configNr].stats) {
525                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
526                                         .stats->rx_packets/42);
527                         retval = 0;
528                 }
529                 break;
530
531         case OID_GEN_RCV_CRC_ERROR:
532                 DEBUG("%s: OID_GEN_RCV_CRC_ERROR\n", __FUNCTION__);
533                 if (rndis_per_dev_params [configNr].stats) {
534                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
535                                         .stats->rx_crc_errors);
536                         retval = 0;
537                 }
538                 break;
539
540         case OID_GEN_TRANSMIT_QUEUE_LENGTH:
541                 DEBUG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __FUNCTION__);
542                 *outbuf = __constant_cpu_to_le32 (0);
543                 retval = 0;
544                 break;
545 #endif  /* RNDIS_OPTIONAL_STATS */
546
547         /* ieee802.3 OIDs (table 4-3) */
548
549         /* mandatory */
550         case OID_802_3_PERMANENT_ADDRESS:
551                 DEBUG("%s: OID_802_3_PERMANENT_ADDRESS\n", __FUNCTION__);
552                 if (rndis_per_dev_params [configNr].dev) {
553                         length = ETH_ALEN;
554                         memcpy (outbuf,
555                                 rndis_per_dev_params [configNr].host_mac,
556                                 length);
557                         retval = 0;
558                 }
559                 break;
560
561         /* mandatory */
562         case OID_802_3_CURRENT_ADDRESS:
563                 DEBUG("%s: OID_802_3_CURRENT_ADDRESS\n", __FUNCTION__);
564                 if (rndis_per_dev_params [configNr].dev) {
565                         length = ETH_ALEN;
566                         memcpy (outbuf,
567                                 rndis_per_dev_params [configNr].host_mac,
568                                 length);
569                         retval = 0;
570                 }
571                 break;
572
573         /* mandatory */
574         case OID_802_3_MULTICAST_LIST:
575                 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
576                 /* Multicast base address only */
577                 *outbuf = __constant_cpu_to_le32 (0xE0000000);
578                 retval = 0;
579                 break;
580
581         /* mandatory */
582         case OID_802_3_MAXIMUM_LIST_SIZE:
583                 DEBUG("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __FUNCTION__);
584                 /* Multicast base address only */
585                 *outbuf = __constant_cpu_to_le32 (1);
586                 retval = 0;
587                 break;
588
589         case OID_802_3_MAC_OPTIONS:
590                 DEBUG("%s: OID_802_3_MAC_OPTIONS\n", __FUNCTION__);
591                 break;
592
593         /* ieee802.3 statistics OIDs (table 4-4) */
594
595         /* mandatory */
596         case OID_802_3_RCV_ERROR_ALIGNMENT:
597                 DEBUG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __FUNCTION__);
598                 if (rndis_per_dev_params [configNr].stats) {
599                         *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr]
600                                         .stats->rx_frame_errors);
601                         retval = 0;
602                 }
603                 break;
604
605         /* mandatory */
606         case OID_802_3_XMIT_ONE_COLLISION:
607                 DEBUG("%s: OID_802_3_XMIT_ONE_COLLISION\n", __FUNCTION__);
608                 *outbuf = __constant_cpu_to_le32 (0);
609                 retval = 0;
610                 break;
611
612         /* mandatory */
613         case OID_802_3_XMIT_MORE_COLLISIONS:
614                 DEBUG("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __FUNCTION__);
615                 *outbuf = __constant_cpu_to_le32 (0);
616                 retval = 0;
617                 break;
618
619 #ifdef  RNDIS_OPTIONAL_STATS
620         case OID_802_3_XMIT_DEFERRED:
621                 DEBUG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
622                 /* TODO */
623                 break;
624
625         case OID_802_3_XMIT_MAX_COLLISIONS:
626                 DEBUG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
627                 /* TODO */
628                 break;
629
630         case OID_802_3_RCV_OVERRUN:
631                 DEBUG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
632                 /* TODO */
633                 break;
634
635         case OID_802_3_XMIT_UNDERRUN:
636                 DEBUG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
637                 /* TODO */
638                 break;
639
640         case OID_802_3_XMIT_HEARTBEAT_FAILURE:
641                 DEBUG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
642                 /* TODO */
643                 break;
644
645         case OID_802_3_XMIT_TIMES_CRS_LOST:
646                 DEBUG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
647                 /* TODO */
648                 break;
649
650         case OID_802_3_XMIT_LATE_COLLISIONS:
651                 DEBUG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __FUNCTION__);
652                 /* TODO */
653                 break;
654 #endif  /* RNDIS_OPTIONAL_STATS */
655
656 #ifdef  RNDIS_PM
657         /* power management OIDs (table 4-5) */
658         case OID_PNP_CAPABILITIES:
659                 DEBUG("%s: OID_PNP_CAPABILITIES\n", __FUNCTION__);
660
661                 /* for now, no wakeup capabilities */
662                 length = sizeof (struct NDIS_PNP_CAPABILITIES);
663                 memset(outbuf, 0, length);
664                 retval = 0;
665                 break;
666         case OID_PNP_QUERY_POWER:
667                 DEBUG("%s: OID_PNP_QUERY_POWER D%d\n", __FUNCTION__,
668                                 le32_to_cpup((__le32 *) buf) - 1);
669                 /* only suspend is a real power state, and
670                  * it can't be entered by OID_PNP_SET_POWER...
671                  */
672                 length = 0;
673                 retval = 0;
674                 break;
675 #endif
676
677         default:
678                 printk (KERN_WARNING "%s: query unknown OID 0x%08X\n",
679                          __FUNCTION__, OID);
680         }
681         if (retval < 0)
682                 length = 0;
683
684         resp->InformationBufferLength = cpu_to_le32 (length);
685         r->length = length + sizeof *resp;
686         resp->MessageLength = cpu_to_le32 (r->length);
687         return retval;
688 }
689
690 static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len,
691                         rndis_resp_t *r)
692 {
693         rndis_set_cmplt_type            *resp;
694         int                             i, retval = -ENOTSUPP;
695         struct rndis_params             *params;
696
697         if (!r)
698                 return -ENOMEM;
699         resp = (rndis_set_cmplt_type *) r->buf;
700         if (!resp)
701                 return -ENOMEM;
702
703         if (buf_len && rndis_debug > 1) {
704                 DEBUG("set OID %08x value, len %d:\n", OID, buf_len);
705                 for (i = 0; i < buf_len; i += 16) {
706                         DEBUG ("%03d: %08x %08x %08x %08x\n", i,
707                                 le32_to_cpup((__le32 *)&buf[i]),
708                                 le32_to_cpup((__le32 *)&buf[i + 4]),
709                                 le32_to_cpup((__le32 *)&buf[i + 8]),
710                                 le32_to_cpup((__le32 *)&buf[i + 12]));
711                 }
712         }
713
714         params = &rndis_per_dev_params [configNr];
715         switch (OID) {
716         case OID_GEN_CURRENT_PACKET_FILTER:
717
718                 /* these NDIS_PACKET_TYPE_* bitflags are shared with
719                  * cdc_filter; it's not RNDIS-specific
720                  * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
721                  *      PROMISCUOUS, DIRECTED,
722                  *      MULTICAST, ALL_MULTICAST, BROADCAST
723                  */
724                 *params->filter = (u16) le32_to_cpup((__le32 *)buf);
725                 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
726                         __FUNCTION__, *params->filter);
727
728                 /* this call has a significant side effect:  it's
729                  * what makes the packet flow start and stop, like
730                  * activating the CDC Ethernet altsetting.
731                  */
732 #ifdef  RNDIS_PM
733 update_linkstate:
734 #endif
735                 retval = 0;
736                 if (*params->filter) {
737                         params->state = RNDIS_DATA_INITIALIZED;
738                         netif_carrier_on(params->dev);
739                         if (netif_running(params->dev))
740                                 netif_wake_queue (params->dev);
741                 } else {
742                         params->state = RNDIS_INITIALIZED;
743                         netif_carrier_off (params->dev);
744                         netif_stop_queue (params->dev);
745                 }
746                 break;
747
748         case OID_802_3_MULTICAST_LIST:
749                 /* I think we can ignore this */
750                 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
751                 retval = 0;
752                 break;
753 #if 0
754         case OID_GEN_RNDIS_CONFIG_PARAMETER:
755                 {
756                 struct rndis_config_parameter   *param;
757                 param = (struct rndis_config_parameter *) buf;
758                 DEBUG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
759                         __FUNCTION__,
760                         min(cpu_to_le32(param->ParameterNameLength),80),
761                         buf + param->ParameterNameOffset);
762                 retval = 0;
763                 }
764                 break;
765 #endif
766
767 #ifdef  RNDIS_PM
768         case OID_PNP_SET_POWER:
769                 /* The only real power state is USB suspend, and RNDIS requests
770                  * can't enter it; this one isn't really about power.  After
771                  * resuming, Windows forces a reset, and then SET_POWER D0.
772                  * FIXME ... then things go batty; Windows wedges itself.
773                  */
774                 i = le32_to_cpup((__force __le32 *)buf);
775                 DEBUG("%s: OID_PNP_SET_POWER D%d\n", __FUNCTION__, i - 1);
776                 switch (i) {
777                 case NdisDeviceStateD0:
778                         *params->filter = params->saved_filter;
779                         goto update_linkstate;
780                 case NdisDeviceStateD3:
781                 case NdisDeviceStateD2:
782                 case NdisDeviceStateD1:
783                         params->saved_filter = *params->filter;
784                         retval = 0;
785                         break;
786                 }
787                 break;
788
789 #ifdef  RNDIS_WAKEUP
790         // no wakeup support advertised, so wakeup OIDs always fail:
791         //  - OID_PNP_ENABLE_WAKE_UP
792         //  - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN
793 #endif
794
795 #endif  /* RNDIS_PM */
796
797         default:
798                 printk (KERN_WARNING "%s: set unknown OID 0x%08X, size %d\n",
799                          __FUNCTION__, OID, buf_len);
800         }
801
802         return retval;
803 }
804
805 /*
806  * Response Functions
807  */
808
809 static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
810 {
811         rndis_init_cmplt_type   *resp;
812         rndis_resp_t            *r;
813
814         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
815
816         r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
817         if (!r)
818                 return -ENOMEM;
819         resp = (rndis_init_cmplt_type *) r->buf;
820
821         resp->MessageType = __constant_cpu_to_le32 (
822                         REMOTE_NDIS_INITIALIZE_CMPLT);
823         resp->MessageLength = __constant_cpu_to_le32 (52);
824         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
825         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
826         resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
827         resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
828         resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
829         resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
830         resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
831         resp->MaxTransferSize = cpu_to_le32 (
832                   rndis_per_dev_params [configNr].dev->mtu
833                 + sizeof (struct ethhdr)
834                 + sizeof (struct rndis_packet_msg_type)
835                 + 22);
836         resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
837         resp->AFListOffset = __constant_cpu_to_le32 (0);
838         resp->AFListSize = __constant_cpu_to_le32 (0);
839
840         if (rndis_per_dev_params [configNr].ack)
841                 rndis_per_dev_params [configNr].ack (
842                         rndis_per_dev_params [configNr].dev);
843
844         return 0;
845 }
846
847 static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
848 {
849         rndis_query_cmplt_type *resp;
850         rndis_resp_t            *r;
851
852         // DEBUG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
853         if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
854
855         /*
856          * we need more memory:
857          * gen_ndis_query_resp expects enough space for
858          * rndis_query_cmplt_type followed by data.
859          * oid_supported_list is the largest data reply
860          */
861         r = rndis_add_response (configNr,
862                 sizeof (oid_supported_list) + sizeof(rndis_query_cmplt_type));
863         if (!r)
864                 return -ENOMEM;
865         resp = (rndis_query_cmplt_type *) r->buf;
866
867         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
868         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
869
870         if (gen_ndis_query_resp (configNr, le32_to_cpu (buf->OID),
871                         le32_to_cpu(buf->InformationBufferOffset)
872                                         + 8 + (u8 *) buf,
873                         le32_to_cpu(buf->InformationBufferLength),
874                         r)) {
875                 /* OID not supported */
876                 resp->Status = __constant_cpu_to_le32 (
877                                 RNDIS_STATUS_NOT_SUPPORTED);
878                 resp->MessageLength = __constant_cpu_to_le32 (sizeof *resp);
879                 resp->InformationBufferLength = __constant_cpu_to_le32 (0);
880                 resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
881         } else
882                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
883
884         if (rndis_per_dev_params [configNr].ack)
885                 rndis_per_dev_params [configNr].ack (
886                         rndis_per_dev_params [configNr].dev);
887         return 0;
888 }
889
890 static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
891 {
892         u32                     BufLength, BufOffset;
893         rndis_set_cmplt_type    *resp;
894         rndis_resp_t            *r;
895
896         r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
897         if (!r)
898                 return -ENOMEM;
899         resp = (rndis_set_cmplt_type *) r->buf;
900
901         BufLength = le32_to_cpu (buf->InformationBufferLength);
902         BufOffset = le32_to_cpu (buf->InformationBufferOffset);
903
904 #ifdef  VERBOSE
905         DEBUG("%s: Length: %d\n", __FUNCTION__, BufLength);
906         DEBUG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
907         DEBUG("%s: InfoBuffer: ", __FUNCTION__);
908
909         for (i = 0; i < BufLength; i++) {
910                 DEBUG ("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
911         }
912
913         DEBUG ("\n");
914 #endif
915
916         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
917         resp->MessageLength = __constant_cpu_to_le32 (16);
918         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
919         if (gen_ndis_set_resp (configNr, le32_to_cpu (buf->OID),
920                         ((u8 *) buf) + 8 + BufOffset, BufLength, r))
921                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
922         else
923                 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
924
925         if (rndis_per_dev_params [configNr].ack)
926                 rndis_per_dev_params [configNr].ack (
927                         rndis_per_dev_params [configNr].dev);
928
929         return 0;
930 }
931
932 static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
933 {
934         rndis_reset_cmplt_type  *resp;
935         rndis_resp_t            *r;
936
937         r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type));
938         if (!r)
939                 return -ENOMEM;
940         resp = (rndis_reset_cmplt_type *) r->buf;
941
942         resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
943         resp->MessageLength = __constant_cpu_to_le32 (16);
944         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
945         /* resent information */
946         resp->AddressingReset = __constant_cpu_to_le32 (1);
947
948         if (rndis_per_dev_params [configNr].ack)
949                 rndis_per_dev_params [configNr].ack (
950                         rndis_per_dev_params [configNr].dev);
951
952         return 0;
953 }
954
955 static int rndis_keepalive_response (int configNr,
956                                 rndis_keepalive_msg_type *buf)
957 {
958         rndis_keepalive_cmplt_type      *resp;
959         rndis_resp_t                    *r;
960
961         /* host "should" check only in RNDIS_DATA_INITIALIZED state */
962
963         r = rndis_add_response (configNr, sizeof (rndis_keepalive_cmplt_type));
964         if (!r)
965                 return -ENOMEM;
966         resp = (rndis_keepalive_cmplt_type *) r->buf;
967
968         resp->MessageType = __constant_cpu_to_le32 (
969                         REMOTE_NDIS_KEEPALIVE_CMPLT);
970         resp->MessageLength = __constant_cpu_to_le32 (16);
971         resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
972         resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
973
974         if (rndis_per_dev_params [configNr].ack)
975                 rndis_per_dev_params [configNr].ack (
976                         rndis_per_dev_params [configNr].dev);
977
978         return 0;
979 }
980
981
982 /*
983  * Device to Host Comunication
984  */
985 static int rndis_indicate_status_msg (int configNr, u32 status)
986 {
987         rndis_indicate_status_msg_type  *resp;
988         rndis_resp_t                    *r;
989
990         if (rndis_per_dev_params [configNr].state == RNDIS_UNINITIALIZED)
991                 return -ENOTSUPP;
992
993         r = rndis_add_response (configNr,
994                                 sizeof (rndis_indicate_status_msg_type));
995         if (!r)
996                 return -ENOMEM;
997         resp = (rndis_indicate_status_msg_type *) r->buf;
998
999         resp->MessageType = __constant_cpu_to_le32 (
1000                         REMOTE_NDIS_INDICATE_STATUS_MSG);
1001         resp->MessageLength = __constant_cpu_to_le32 (20);
1002         resp->Status = cpu_to_le32 (status);
1003         resp->StatusBufferLength = __constant_cpu_to_le32 (0);
1004         resp->StatusBufferOffset = __constant_cpu_to_le32 (0);
1005
1006         if (rndis_per_dev_params [configNr].ack)
1007                 rndis_per_dev_params [configNr].ack (
1008                         rndis_per_dev_params [configNr].dev);
1009         return 0;
1010 }
1011
1012 int rndis_signal_connect (int configNr)
1013 {
1014         rndis_per_dev_params [configNr].media_state
1015                         = NDIS_MEDIA_STATE_CONNECTED;
1016         return rndis_indicate_status_msg (configNr,
1017                                           RNDIS_STATUS_MEDIA_CONNECT);
1018 }
1019
1020 int rndis_signal_disconnect (int configNr)
1021 {
1022         rndis_per_dev_params [configNr].media_state
1023                         = NDIS_MEDIA_STATE_DISCONNECTED;
1024         return rndis_indicate_status_msg (configNr,
1025                                           RNDIS_STATUS_MEDIA_DISCONNECT);
1026 }
1027
1028 void rndis_uninit (int configNr)
1029 {
1030         u8 *buf;
1031         u32 length;
1032
1033         if (configNr >= RNDIS_MAX_CONFIGS)
1034                 return;
1035         rndis_per_dev_params [configNr].used = 0;
1036         rndis_per_dev_params [configNr].state = RNDIS_UNINITIALIZED;
1037
1038         /* drain the response queue */
1039         while ((buf = rndis_get_next_response(configNr, &length)))
1040                 rndis_free_response(configNr, buf);
1041 }
1042
1043 void rndis_set_host_mac (int configNr, const u8 *addr)
1044 {
1045         rndis_per_dev_params [configNr].host_mac = addr;
1046 }
1047
1048 /*
1049  * Message Parser
1050  */
1051 int rndis_msg_parser (u8 configNr, u8 *buf)
1052 {
1053         u32 MsgType, MsgLength;
1054         __le32 *tmp;
1055         struct rndis_params             *params;
1056
1057         if (!buf)
1058                 return -ENOMEM;
1059
1060         tmp = (__le32 *) buf;
1061         MsgType   = le32_to_cpup(tmp++);
1062         MsgLength = le32_to_cpup(tmp++);
1063
1064         if (configNr >= RNDIS_MAX_CONFIGS)
1065                 return -ENOTSUPP;
1066         params = &rndis_per_dev_params [configNr];
1067
1068         /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
1069          * rx/tx statistics and link status, in addition to KEEPALIVE traffic
1070          * and normal HC level polling to see if there's any IN traffic.
1071          */
1072
1073         /* For USB: responses may take up to 10 seconds */
1074         switch (MsgType) {
1075         case REMOTE_NDIS_INITIALIZE_MSG:
1076                 DEBUG("%s: REMOTE_NDIS_INITIALIZE_MSG\n",
1077                         __FUNCTION__ );
1078                 params->state = RNDIS_INITIALIZED;
1079                 return  rndis_init_response (configNr,
1080                                         (rndis_init_msg_type *) buf);
1081
1082         case REMOTE_NDIS_HALT_MSG:
1083                 DEBUG("%s: REMOTE_NDIS_HALT_MSG\n",
1084                         __FUNCTION__ );
1085                 params->state = RNDIS_UNINITIALIZED;
1086                 if (params->dev) {
1087                         netif_carrier_off (params->dev);
1088                         netif_stop_queue (params->dev);
1089                 }
1090                 return 0;
1091
1092         case REMOTE_NDIS_QUERY_MSG:
1093                 return rndis_query_response (configNr,
1094                                         (rndis_query_msg_type *) buf);
1095
1096         case REMOTE_NDIS_SET_MSG:
1097                 return rndis_set_response (configNr,
1098                                         (rndis_set_msg_type *) buf);
1099
1100         case REMOTE_NDIS_RESET_MSG:
1101                 DEBUG("%s: REMOTE_NDIS_RESET_MSG\n",
1102                         __FUNCTION__ );
1103                 return rndis_reset_response (configNr,
1104                                         (rndis_reset_msg_type *) buf);
1105
1106         case REMOTE_NDIS_KEEPALIVE_MSG:
1107                 /* For USB: host does this every 5 seconds */
1108                 if (rndis_debug > 1)
1109                         DEBUG("%s: REMOTE_NDIS_KEEPALIVE_MSG\n",
1110                                 __FUNCTION__ );
1111                 return rndis_keepalive_response (configNr,
1112                                                  (rndis_keepalive_msg_type *)
1113                                                  buf);
1114
1115         default:
1116                 /* At least Windows XP emits some undefined RNDIS messages.
1117                  * In one case those messages seemed to relate to the host
1118                  * suspending itself.
1119                  */
1120                 printk (KERN_WARNING
1121                         "%s: unknown RNDIS message 0x%08X len %d\n",
1122                         __FUNCTION__ , MsgType, MsgLength);
1123                 {
1124                         unsigned i;
1125                         for (i = 0; i < MsgLength; i += 16) {
1126                                 DEBUG ("%03d: "
1127                                         " %02x %02x %02x %02x"
1128                                         " %02x %02x %02x %02x"
1129                                         " %02x %02x %02x %02x"
1130                                         " %02x %02x %02x %02x"
1131                                         "\n",
1132                                         i,
1133                                         buf[i], buf [i+1],
1134                                                 buf[i+2], buf[i+3],
1135                                         buf[i+4], buf [i+5],
1136                                                 buf[i+6], buf[i+7],
1137                                         buf[i+8], buf [i+9],
1138                                                 buf[i+10], buf[i+11],
1139                                         buf[i+12], buf [i+13],
1140                                                 buf[i+14], buf[i+15]);
1141                         }
1142                 }
1143                 break;
1144         }
1145
1146         return -ENOTSUPP;
1147 }
1148
1149 int rndis_register (int (* rndis_control_ack) (struct net_device *))
1150 {
1151         u8 i;
1152
1153         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1154                 if (!rndis_per_dev_params [i].used) {
1155                         rndis_per_dev_params [i].used = 1;
1156                         rndis_per_dev_params [i].ack = rndis_control_ack;
1157                         DEBUG("%s: configNr = %d\n", __FUNCTION__, i);
1158                         return i;
1159                 }
1160         }
1161         DEBUG("failed\n");
1162
1163         return -1;
1164 }
1165
1166 void rndis_deregister (int configNr)
1167 {
1168         DEBUG("%s: \n", __FUNCTION__ );
1169
1170         if (configNr >= RNDIS_MAX_CONFIGS) return;
1171         rndis_per_dev_params [configNr].used = 0;
1172
1173         return;
1174 }
1175
1176 int rndis_set_param_dev (u8 configNr, struct net_device *dev,
1177                          struct net_device_stats *stats,
1178                          u16 *cdc_filter)
1179 {
1180         DEBUG("%s:\n", __FUNCTION__ );
1181         if (!dev || !stats) return -1;
1182         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1183
1184         rndis_per_dev_params [configNr].dev = dev;
1185         rndis_per_dev_params [configNr].stats = stats;
1186         rndis_per_dev_params [configNr].filter = cdc_filter;
1187
1188         return 0;
1189 }
1190
1191 int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr)
1192 {
1193         DEBUG("%s:\n", __FUNCTION__ );
1194         if (!vendorDescr) return -1;
1195         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1196
1197         rndis_per_dev_params [configNr].vendorID = vendorID;
1198         rndis_per_dev_params [configNr].vendorDescr = vendorDescr;
1199
1200         return 0;
1201 }
1202
1203 int rndis_set_param_medium (u8 configNr, u32 medium, u32 speed)
1204 {
1205         DEBUG("%s: %u %u\n", __FUNCTION__, medium, speed);
1206         if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1207
1208         rndis_per_dev_params [configNr].medium = medium;
1209         rndis_per_dev_params [configNr].speed = speed;
1210
1211         return 0;
1212 }
1213
1214 void rndis_add_hdr (struct sk_buff *skb)
1215 {
1216         struct rndis_packet_msg_type    *header;
1217
1218         if (!skb)
1219                 return;
1220         header = (void *) skb_push (skb, sizeof *header);
1221         memset (header, 0, sizeof *header);
1222         header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
1223         header->MessageLength = cpu_to_le32(skb->len);
1224         header->DataOffset = __constant_cpu_to_le32 (36);
1225         header->DataLength = cpu_to_le32(skb->len - sizeof *header);
1226 }
1227
1228 void rndis_free_response (int configNr, u8 *buf)
1229 {
1230         rndis_resp_t            *r;
1231         struct list_head        *act, *tmp;
1232
1233         list_for_each_safe (act, tmp,
1234                         &(rndis_per_dev_params [configNr].resp_queue))
1235         {
1236                 r = list_entry (act, rndis_resp_t, list);
1237                 if (r && r->buf == buf) {
1238                         list_del (&r->list);
1239                         kfree (r);
1240                 }
1241         }
1242 }
1243
1244 u8 *rndis_get_next_response (int configNr, u32 *length)
1245 {
1246         rndis_resp_t            *r;
1247         struct list_head        *act, *tmp;
1248
1249         if (!length) return NULL;
1250
1251         list_for_each_safe (act, tmp,
1252                         &(rndis_per_dev_params [configNr].resp_queue))
1253         {
1254                 r = list_entry (act, rndis_resp_t, list);
1255                 if (!r->send) {
1256                         r->send = 1;
1257                         *length = r->length;
1258                         return r->buf;
1259                 }
1260         }
1261
1262         return NULL;
1263 }
1264
1265 static rndis_resp_t *rndis_add_response (int configNr, u32 length)
1266 {
1267         rndis_resp_t    *r;
1268
1269         /* NOTE:  this gets copied into ether.c USB_BUFSIZ bytes ... */
1270         r = kmalloc (sizeof (rndis_resp_t) + length, GFP_ATOMIC);
1271         if (!r) return NULL;
1272
1273         r->buf = (u8 *) (r + 1);
1274         r->length = length;
1275         r->send = 0;
1276
1277         list_add_tail (&r->list,
1278                 &(rndis_per_dev_params [configNr].resp_queue));
1279         return r;
1280 }
1281
1282 int rndis_rm_hdr(struct sk_buff *skb)
1283 {
1284         /* tmp points to a struct rndis_packet_msg_type */
1285         __le32          *tmp = (void *) skb->data;
1286
1287         /* MessageType, MessageLength */
1288         if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
1289                         != get_unaligned(tmp++))
1290                 return -EINVAL;
1291         tmp++;
1292
1293         /* DataOffset, DataLength */
1294         if (!skb_pull(skb, le32_to_cpu(get_unaligned(tmp++))
1295                         + 8 /* offset of DataOffset */))
1296                 return -EOVERFLOW;
1297         skb_trim(skb, le32_to_cpu(get_unaligned(tmp++)));
1298
1299         return 0;
1300 }
1301
1302 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1303
1304 static int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof,
1305                 void *data)
1306 {
1307         char *out = page;
1308         int len;
1309         rndis_params *param = (rndis_params *) data;
1310
1311         out += snprintf (out, count,
1312                          "Config Nr. %d\n"
1313                          "used      : %s\n"
1314                          "state     : %s\n"
1315                          "medium    : 0x%08X\n"
1316                          "speed     : %d\n"
1317                          "cable     : %s\n"
1318                          "vendor ID : 0x%08X\n"
1319                          "vendor    : %s\n",
1320                          param->confignr, (param->used) ? "y" : "n",
1321                          ({ char *s = "?";
1322                          switch (param->state) {
1323                          case RNDIS_UNINITIALIZED:
1324                                 s = "RNDIS_UNINITIALIZED"; break;
1325                          case RNDIS_INITIALIZED:
1326                                 s = "RNDIS_INITIALIZED"; break;
1327                          case RNDIS_DATA_INITIALIZED:
1328                                 s = "RNDIS_DATA_INITIALIZED"; break;
1329                         }; s; }),
1330                          param->medium,
1331                          (param->media_state) ? 0 : param->speed*100,
1332                          (param->media_state) ? "disconnected" : "connected",
1333                          param->vendorID, param->vendorDescr);
1334
1335         len = out - page;
1336         len -= off;
1337
1338         if (len < count) {
1339                 *eof = 1;
1340                 if (len <= 0)
1341                         return 0;
1342         } else
1343                 len = count;
1344
1345         *start = page + off;
1346         return len;
1347 }
1348
1349 static int rndis_proc_write (struct file *file, const char __user *buffer,
1350                 unsigned long count, void *data)
1351 {
1352         rndis_params *p = data;
1353         u32 speed = 0;
1354         int i, fl_speed = 0;
1355
1356         for (i = 0; i < count; i++) {
1357                 char c;
1358                 if (get_user(c, buffer))
1359                         return -EFAULT;
1360                 switch (c) {
1361                 case '0':
1362                 case '1':
1363                 case '2':
1364                 case '3':
1365                 case '4':
1366                 case '5':
1367                 case '6':
1368                 case '7':
1369                 case '8':
1370                 case '9':
1371                         fl_speed = 1;
1372                         speed = speed*10 + c - '0';
1373                         break;
1374                 case 'C':
1375                 case 'c':
1376                         rndis_signal_connect (p->confignr);
1377                         break;
1378                 case 'D':
1379                 case 'd':
1380                         rndis_signal_disconnect(p->confignr);
1381                         break;
1382                 default:
1383                         if (fl_speed) p->speed = speed;
1384                         else DEBUG ("%c is not valid\n", c);
1385                         break;
1386                 }
1387
1388                 buffer++;
1389         }
1390
1391         return count;
1392 }
1393
1394 #define NAME_TEMPLATE   "driver/rndis-%03d"
1395
1396 static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
1397
1398 #endif  /* CONFIG_USB_GADGET_DEBUG_FILES */
1399
1400
1401 int __devinit rndis_init (void)
1402 {
1403         u8 i;
1404
1405         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1406 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1407                 char name [20];
1408
1409                 sprintf (name, NAME_TEMPLATE, i);
1410                 if (!(rndis_connect_state [i]
1411                                 = create_proc_entry (name, 0660, NULL)))
1412                 {
1413                         DEBUG ("%s :remove entries", __FUNCTION__);
1414                         while (i) {
1415                                 sprintf (name, NAME_TEMPLATE, --i);
1416                                 remove_proc_entry (name, NULL);
1417                         }
1418                         DEBUG ("\n");
1419                         return -EIO;
1420                 }
1421
1422                 rndis_connect_state [i]->nlink = 1;
1423                 rndis_connect_state [i]->write_proc = rndis_proc_write;
1424                 rndis_connect_state [i]->read_proc = rndis_proc_read;
1425                 rndis_connect_state [i]->data = (void *)
1426                                 (rndis_per_dev_params + i);
1427 #endif
1428                 rndis_per_dev_params [i].confignr = i;
1429                 rndis_per_dev_params [i].used = 0;
1430                 rndis_per_dev_params [i].state = RNDIS_UNINITIALIZED;
1431                 rndis_per_dev_params [i].media_state
1432                                 = NDIS_MEDIA_STATE_DISCONNECTED;
1433                 INIT_LIST_HEAD (&(rndis_per_dev_params [i].resp_queue));
1434         }
1435
1436         return 0;
1437 }
1438
1439 void rndis_exit (void)
1440 {
1441 #ifdef  CONFIG_USB_GADGET_DEBUG_FILES
1442         u8 i;
1443         char name [20];
1444
1445         for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1446                 sprintf (name, NAME_TEMPLATE, i);
1447                 remove_proc_entry (name, NULL);
1448         }
1449 #endif
1450 }
1451