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