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kbuild: document howto build external modules using several directories
[linux-2.6/verdex.git] / drivers / usb / gadget / rndis.c
blob9689efeb364c20ab38a499d5106a0c122bb43d4c
1 /*
2 * RNDIS MSG parser
3 *
4 * Version: $Id: rndis.c,v 1.19 2004/03/25 21:33:46 robert Exp $
5 *
6 * Authors: Benedikt Spranger, Pengutronix
7 * Robert Schwebel, Pengutronix
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * version 2, as published by the Free Software Foundation.
12 *
13 * This software was originally developed in conformance with
14 * Microsoft's Remote NDIS Specification License Agreement.
15 *
16 * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
17 * Fixed message length bug in init_response
18 *
19 * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
20 * Fixed rndis_rm_hdr length bug.
21 *
22 * Copyright (C) 2004 by David Brownell
23 * updates to merge with Linux 2.6, better match RNDIS spec
24 */
25
26 #include <linux/config.h>
27 #include <linux/module.h>
28 #include <linux/moduleparam.h>
29 #include <linux/kernel.h>
30 #include <linux/errno.h>
31 #include <linux/init.h>
32 #include <linux/list.h>
33 #include <linux/proc_fs.h>
34 #include <linux/netdevice.h>
35
36 #include <asm/io.h>
37 #include <asm/byteorder.h>
38 #include <asm/system.h>
39 #include <asm/unaligned.h>
40
41
42 #undef RNDIS_PM
43 #undef RNDIS_WAKEUP
44 #undef VERBOSE
45
46 #include "rndis.h"
47
48
49 /* The driver for your USB chip needs to support ep0 OUT to work with
50 * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
51 *
52 * Windows hosts need an INF file like Documentation/usb/linux.inf
53 * and will be happier if you provide the host_addr module parameter.
54 */
55
56 #if 0
57 #define DEBUG(str,args...) do { \
58 if (rndis_debug) \
59 printk(KERN_DEBUG str , ## args ); \
60 } while (0)
61 static int rndis_debug = 0;
62
63 module_param (rndis_debug, int, 0);
64 MODULE_PARM_DESC (rndis_debug, "enable debugging");
65
66 #else
67
68 #define rndis_debug 0
69 #define DEBUG(str,args...) do{}while(0)
70 #endif
71
72 #define RNDIS_MAX_CONFIGS 1
73
74
75 static rndis_params rndis_per_dev_params [RNDIS_MAX_CONFIGS];
76
77 /* Driver Version */
78 static const __le32 rndis_driver_version = __constant_cpu_to_le32 (1);
79
80 /* Function Prototypes */
81 static rndis_resp_t *rndis_add_response (int configNr, u32 length);
82
83
84 /* supported OIDs */
85 static const u32 oid_supported_list [] =
86 {
87 /* the general stuff */
88 OID_GEN_SUPPORTED_LIST,
89 OID_GEN_HARDWARE_STATUS,
90 OID_GEN_MEDIA_SUPPORTED,
91 OID_GEN_MEDIA_IN_USE,
92 OID_GEN_MAXIMUM_FRAME_SIZE,
93 OID_GEN_LINK_SPEED,
94 OID_GEN_TRANSMIT_BLOCK_SIZE,
95 OID_GEN_RECEIVE_BLOCK_SIZE,
96 OID_GEN_VENDOR_ID,
97 OID_GEN_VENDOR_DESCRIPTION,
98 OID_GEN_VENDOR_DRIVER_VERSION,
99 OID_GEN_CURRENT_PACKET_FILTER,
100 OID_GEN_MAXIMUM_TOTAL_SIZE,
101 OID_GEN_MEDIA_CONNECT_STATUS,
102 OID_GEN_PHYSICAL_MEDIUM,
103 #if 0
104 OID_GEN_RNDIS_CONFIG_PARAMETER,
105 #endif
106
107 /* the statistical stuff */
108 OID_GEN_XMIT_OK,
109 OID_GEN_RCV_OK,
110 OID_GEN_XMIT_ERROR,
111 OID_GEN_RCV_ERROR,
112 OID_GEN_RCV_NO_BUFFER,
113 #ifdef RNDIS_OPTIONAL_STATS
114 OID_GEN_DIRECTED_BYTES_XMIT,
115 OID_GEN_DIRECTED_FRAMES_XMIT,
116 OID_GEN_MULTICAST_BYTES_XMIT,
117 OID_GEN_MULTICAST_FRAMES_XMIT,
118 OID_GEN_BROADCAST_BYTES_XMIT,
119 OID_GEN_BROADCAST_FRAMES_XMIT,
120 OID_GEN_DIRECTED_BYTES_RCV,
121 OID_GEN_DIRECTED_FRAMES_RCV,
122 OID_GEN_MULTICAST_BYTES_RCV,
123 OID_GEN_MULTICAST_FRAMES_RCV,
124 OID_GEN_BROADCAST_BYTES_RCV,
125 OID_GEN_BROADCAST_FRAMES_RCV,
126 OID_GEN_RCV_CRC_ERROR,
127 OID_GEN_TRANSMIT_QUEUE_LENGTH,
128 #endif /* RNDIS_OPTIONAL_STATS */
129
130 /* mandatory 802.3 */
131 /* the general stuff */
132 OID_802_3_PERMANENT_ADDRESS,
133 OID_802_3_CURRENT_ADDRESS,
134 OID_802_3_MULTICAST_LIST,
135 OID_802_3_MAC_OPTIONS,
136 OID_802_3_MAXIMUM_LIST_SIZE,
137
138 /* the statistical stuff */
139 OID_802_3_RCV_ERROR_ALIGNMENT,
140 OID_802_3_XMIT_ONE_COLLISION,
141 OID_802_3_XMIT_MORE_COLLISIONS,
142 #ifdef RNDIS_OPTIONAL_STATS
143 OID_802_3_XMIT_DEFERRED,
144 OID_802_3_XMIT_MAX_COLLISIONS,
145 OID_802_3_RCV_OVERRUN,
146 OID_802_3_XMIT_UNDERRUN,
147 OID_802_3_XMIT_HEARTBEAT_FAILURE,
148 OID_802_3_XMIT_TIMES_CRS_LOST,
149 OID_802_3_XMIT_LATE_COLLISIONS,
150 #endif /* RNDIS_OPTIONAL_STATS */
151
152 #ifdef RNDIS_PM
153 /* PM and wakeup are mandatory for USB: */
154
155 /* power management */
156 OID_PNP_CAPABILITIES,
157 OID_PNP_QUERY_POWER,
158 OID_PNP_SET_POWER,
159
160 #ifdef RNDIS_WAKEUP
161 /* wake up host */
162 OID_PNP_ENABLE_WAKE_UP,
163 OID_PNP_ADD_WAKE_UP_PATTERN,
164 OID_PNP_REMOVE_WAKE_UP_PATTERN,
165 #endif /* RNDIS_WAKEUP */
166 #endif /* RNDIS_PM */
167 };
168
169
170 /* NDIS Functions */
171 static int
172 gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
173 rndis_resp_t *r)
174 {
175 int retval = -ENOTSUPP;
176 u32 length = 4; /* usually */
177 __le32 *outbuf;
178 int i, count;
179 rndis_query_cmplt_type *resp;
180
181 if (!r) return -ENOMEM;
182 resp = (rndis_query_cmplt_type *) r->buf;
183
184 if (!resp) return -ENOMEM;
185
186 if (buf_len && rndis_debug > 1) {
187 DEBUG("query OID %08x value, len %d:\n", OID, buf_len);
188 for (i = 0; i < buf_len; i += 16) {
189 DEBUG ("%03d: %08x %08x %08x %08x\n", i,
190 le32_to_cpup((__le32 *)&buf[i]),
191 le32_to_cpup((__le32 *)&buf[i + 4]),
192 le32_to_cpup((__le32 *)&buf[i + 8]),
193 le32_to_cpup((__le32 *)&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 DEBUG ("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%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 DEBUG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
623 /* TODO */
624 break;
625
626 case OID_802_3_XMIT_MAX_COLLISIONS:
627 DEBUG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
628 /* TODO */
629 break;
630
631 case OID_802_3_RCV_OVERRUN:
632 DEBUG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
633 /* TODO */
634 break;
635
636 case OID_802_3_XMIT_UNDERRUN:
637 DEBUG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
638 /* TODO */
639 break;
640
641 case OID_802_3_XMIT_HEARTBEAT_FAILURE:
642 DEBUG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
643 /* TODO */
644 break;
645
646 case OID_802_3_XMIT_TIMES_CRS_LOST:
647 DEBUG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
648 /* TODO */
649 break;
650
651 case OID_802_3_XMIT_LATE_COLLISIONS:
652 DEBUG("%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 DEBUG("%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 DEBUG("%s: OID_PNP_QUERY_POWER D%d\n", __FUNCTION__,
669 le32_to_cpup((__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 printk (KERN_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 DEBUG("set OID %08x value, len %d:\n", OID, buf_len);
706 for (i = 0; i < buf_len; i += 16) {
707 DEBUG ("%03d: %08x %08x %08x %08x\n", i,
708 le32_to_cpup((__le32 *)&buf[i]),
709 le32_to_cpup((__le32 *)&buf[i + 4]),
710 le32_to_cpup((__le32 *)&buf[i + 8]),
711 le32_to_cpup((__le32 *)&buf[i + 12]));
712 }
713 }
714
715 params = &rndis_per_dev_params [configNr];
716 switch (OID) {
717 case OID_GEN_CURRENT_PACKET_FILTER:
718
719 /* these NDIS_PACKET_TYPE_* bitflags are shared with
720 * cdc_filter; it's not RNDIS-specific
721 * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
722 * PROMISCUOUS, DIRECTED,
723 * MULTICAST, ALL_MULTICAST, BROADCAST
724 */
725 *params->filter = (u16) le32_to_cpup((__le32 *)buf);
726 DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
727 __FUNCTION__, *params->filter);
728
729 /* this call has a significant side effect: it's
730 * what makes the packet flow start and stop, like
731 * activating the CDC Ethernet altsetting.
732 */
733 #ifdef RNDIS_PM
734 update_linkstate:
735 #endif
736 retval = 0;
737 if (*params->filter) {
738 params->state = RNDIS_DATA_INITIALIZED;
739 netif_carrier_on(params->dev);
740 if (netif_running(params->dev))
741 netif_wake_queue (params->dev);
742 } else {
743 params->state = RNDIS_INITIALIZED;
744 netif_carrier_off (params->dev);
745 netif_stop_queue (params->dev);
746 }
747 break;
748
749 case OID_802_3_MULTICAST_LIST:
750 /* I think we can ignore this */
751 DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
752 retval = 0;
753 break;
754 #if 0
755 case OID_GEN_RNDIS_CONFIG_PARAMETER:
756 {
757 struct rndis_config_parameter *param;
758 param = (struct rndis_config_parameter *) buf;
759 DEBUG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
760 __FUNCTION__,
761 min(cpu_to_le32(param->ParameterNameLength),80),
762 buf + param->ParameterNameOffset);
763 retval = 0;
764 }
765 break;
766 #endif
767
768 #ifdef RNDIS_PM
769 case OID_PNP_SET_POWER:
770 /* The only real power state is USB suspend, and RNDIS requests
771 * can't enter it; this one isn't really about power. After
772 * resuming, Windows forces a reset, and then SET_POWER D0.
773 * FIXME ... then things go batty; Windows wedges itself.
774 */
775 i = le32_to_cpup((__force __le32 *)buf);
776 DEBUG("%s: OID_PNP_SET_POWER D%d\n", __FUNCTION__, i - 1);
777 switch (i) {
778 case NdisDeviceStateD0:
779 *params->filter = params->saved_filter;
780 goto update_linkstate;
781 case NdisDeviceStateD3:
782 case NdisDeviceStateD2:
783 case NdisDeviceStateD1:
784 params->saved_filter = *params->filter;
785 retval = 0;
786 break;
787 }
788 break;
789
790 #ifdef RNDIS_WAKEUP
791 // no wakeup support advertised, so wakeup OIDs always fail:
792 // - OID_PNP_ENABLE_WAKE_UP
793 // - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN
794 #endif
795
796 #endif /* RNDIS_PM */
797
798 default:
799 printk (KERN_WARNING "%s: set unknown OID 0x%08X, size %d\n",
800 __FUNCTION__, OID, buf_len);
801 }
802
803 return retval;
804 }
805
806 /*
807 * Response Functions
808 */
809
810 static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
811 {
812 rndis_init_cmplt_type *resp;
813 rndis_resp_t *r;
814
815 if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
816
817 r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
818 if (!r)
819 return -ENOMEM;
820 resp = (rndis_init_cmplt_type *) r->buf;
821
822 resp->MessageType = __constant_cpu_to_le32 (
823 REMOTE_NDIS_INITIALIZE_CMPLT);
824 resp->MessageLength = __constant_cpu_to_le32 (52);
825 resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
826 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
827 resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
828 resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
829 resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
830 resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
831 resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
832 resp->MaxTransferSize = cpu_to_le32 (
833 rndis_per_dev_params [configNr].dev->mtu
834 + sizeof (struct ethhdr)
835 + sizeof (struct rndis_packet_msg_type)
836 + 22);
837 resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
838 resp->AFListOffset = __constant_cpu_to_le32 (0);
839 resp->AFListSize = __constant_cpu_to_le32 (0);
840
841 if (rndis_per_dev_params [configNr].ack)
842 rndis_per_dev_params [configNr].ack (
843 rndis_per_dev_params [configNr].dev);
844
845 return 0;
846 }
847
848 static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
849 {
850 rndis_query_cmplt_type *resp;
851 rndis_resp_t *r;
852
853 // DEBUG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
854 if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
855
856 /*
857 * we need more memory:
858 * oid_supported_list is the largest answer
859 */
860 r = rndis_add_response (configNr, sizeof (oid_supported_list));
861 if (!r)
862 return -ENOMEM;
863 resp = (rndis_query_cmplt_type *) r->buf;
864
865 resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
866 resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
867
868 if (gen_ndis_query_resp (configNr, le32_to_cpu (buf->OID),
869 le32_to_cpu(buf->InformationBufferOffset)
870 + 8 + (u8 *) buf,
871 le32_to_cpu(buf->InformationBufferLength),
872 r)) {
873 /* OID not supported */
874 resp->Status = __constant_cpu_to_le32 (
875 RNDIS_STATUS_NOT_SUPPORTED);
876 resp->MessageLength = __constant_cpu_to_le32 (sizeof *resp);
877 resp->InformationBufferLength = __constant_cpu_to_le32 (0);
878 resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
879 } else
880 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
881
882 if (rndis_per_dev_params [configNr].ack)
883 rndis_per_dev_params [configNr].ack (
884 rndis_per_dev_params [configNr].dev);
885 return 0;
886 }
887
888 static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
889 {
890 u32 BufLength, BufOffset;
891 rndis_set_cmplt_type *resp;
892 rndis_resp_t *r;
893
894 r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
895 if (!r)
896 return -ENOMEM;
897 resp = (rndis_set_cmplt_type *) r->buf;
898
899 BufLength = le32_to_cpu (buf->InformationBufferLength);
900 BufOffset = le32_to_cpu (buf->InformationBufferOffset);
901
902 #ifdef VERBOSE
903 DEBUG("%s: Length: %d\n", __FUNCTION__, BufLength);
904 DEBUG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
905 DEBUG("%s: InfoBuffer: ", __FUNCTION__);
906
907 for (i = 0; i < BufLength; i++) {
908 DEBUG ("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
909 }
910
911 DEBUG ("\n");
912 #endif
913
914 resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
915 resp->MessageLength = __constant_cpu_to_le32 (16);
916 resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
917 if (gen_ndis_set_resp (configNr, le32_to_cpu (buf->OID),
918 ((u8 *) buf) + 8 + BufOffset, BufLength, r))
919 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
920 else resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
921
922 if (rndis_per_dev_params [configNr].ack)
923 rndis_per_dev_params [configNr].ack (
924 rndis_per_dev_params [configNr].dev);
925
926 return 0;
927 }
928
929 static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
930 {
931 rndis_reset_cmplt_type *resp;
932 rndis_resp_t *r;
933
934 r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type));
935 if (!r)
936 return -ENOMEM;
937 resp = (rndis_reset_cmplt_type *) r->buf;
938
939 resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
940 resp->MessageLength = __constant_cpu_to_le32 (16);
941 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
942 /* resent information */
943 resp->AddressingReset = __constant_cpu_to_le32 (1);
944
945 if (rndis_per_dev_params [configNr].ack)
946 rndis_per_dev_params [configNr].ack (
947 rndis_per_dev_params [configNr].dev);
948
949 return 0;
950 }
951
952 static int rndis_keepalive_response (int configNr,
953 rndis_keepalive_msg_type *buf)
954 {
955 rndis_keepalive_cmplt_type *resp;
956 rndis_resp_t *r;
957
958 /* host "should" check only in RNDIS_DATA_INITIALIZED state */
959
960 r = rndis_add_response (configNr, sizeof (rndis_keepalive_cmplt_type));
961 if (!r)
962 return -ENOMEM;
963 resp = (rndis_keepalive_cmplt_type *) r->buf;
964
965 resp->MessageType = __constant_cpu_to_le32 (
966 REMOTE_NDIS_KEEPALIVE_CMPLT);
967 resp->MessageLength = __constant_cpu_to_le32 (16);
968 resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
969 resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
970
971 if (rndis_per_dev_params [configNr].ack)
972 rndis_per_dev_params [configNr].ack (
973 rndis_per_dev_params [configNr].dev);
974
975 return 0;
976 }
977
978
979 /*
980 * Device to Host Comunication
981 */
982 static int rndis_indicate_status_msg (int configNr, u32 status)
983 {
984 rndis_indicate_status_msg_type *resp;
985 rndis_resp_t *r;
986
987 if (rndis_per_dev_params [configNr].state == RNDIS_UNINITIALIZED)
988 return -ENOTSUPP;
989
990 r = rndis_add_response (configNr,
991 sizeof (rndis_indicate_status_msg_type));
992 if (!r)
993 return -ENOMEM;
994 resp = (rndis_indicate_status_msg_type *) r->buf;
995
996 resp->MessageType = __constant_cpu_to_le32 (
997 REMOTE_NDIS_INDICATE_STATUS_MSG);
998 resp->MessageLength = __constant_cpu_to_le32 (20);
999 resp->Status = cpu_to_le32 (status);
1000 resp->StatusBufferLength = __constant_cpu_to_le32 (0);
1001 resp->StatusBufferOffset = __constant_cpu_to_le32 (0);
1002
1003 if (rndis_per_dev_params [configNr].ack)
1004 rndis_per_dev_params [configNr].ack (
1005 rndis_per_dev_params [configNr].dev);
1006 return 0;
1007 }
1008
1009 int rndis_signal_connect (int configNr)
1010 {
1011 rndis_per_dev_params [configNr].media_state
1012 = NDIS_MEDIA_STATE_CONNECTED;
1013 return rndis_indicate_status_msg (configNr,
1014 RNDIS_STATUS_MEDIA_CONNECT);
1015 }
1016
1017 int rndis_signal_disconnect (int configNr)
1018 {
1019 rndis_per_dev_params [configNr].media_state
1020 = NDIS_MEDIA_STATE_DISCONNECTED;
1021 return rndis_indicate_status_msg (configNr,
1022 RNDIS_STATUS_MEDIA_DISCONNECT);
1023 }
1024
1025 void rndis_uninit (int configNr)
1026 {
1027 u8 *buf;
1028 u32 length;
1029
1030 if (configNr >= RNDIS_MAX_CONFIGS)
1031 return;
1032 rndis_per_dev_params [configNr].used = 0;
1033 rndis_per_dev_params [configNr].state = RNDIS_UNINITIALIZED;
1034
1035 /* drain the response queue */
1036 while ((buf = rndis_get_next_response(configNr, &length)))
1037 rndis_free_response(configNr, buf);
1038 }
1039
1040 void rndis_set_host_mac (int configNr, const u8 *addr)
1041 {
1042 rndis_per_dev_params [configNr].host_mac = addr;
1043 }
1044
1045 /*
1046 * Message Parser
1047 */
1048 int rndis_msg_parser (u8 configNr, u8 *buf)
1049 {
1050 u32 MsgType, MsgLength;
1051 __le32 *tmp;
1052 struct rndis_params *params;
1053
1054 if (!buf)
1055 return -ENOMEM;
1056
1057 tmp = (__le32 *) buf;
1058 MsgType = le32_to_cpup(tmp++);
1059 MsgLength = le32_to_cpup(tmp++);
1060
1061 if (configNr >= RNDIS_MAX_CONFIGS)
1062 return -ENOTSUPP;
1063 params = &rndis_per_dev_params [configNr];
1064
1065 /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
1066 * rx/tx statistics and link status, in addition to KEEPALIVE traffic
1067 * and normal HC level polling to see if there's any IN traffic.
1068 */
1069
1070 /* For USB: responses may take up to 10 seconds */
1071 switch (MsgType) {
1072 case REMOTE_NDIS_INITIALIZE_MSG:
1073 DEBUG("%s: REMOTE_NDIS_INITIALIZE_MSG\n",
1074 __FUNCTION__ );
1075 params->state = RNDIS_INITIALIZED;
1076 return rndis_init_response (configNr,
1077 (rndis_init_msg_type *) buf);
1078
1079 case REMOTE_NDIS_HALT_MSG:
1080 DEBUG("%s: REMOTE_NDIS_HALT_MSG\n",
1081 __FUNCTION__ );
1082 params->state = RNDIS_UNINITIALIZED;
1083 if (params->dev) {
1084 netif_carrier_off (params->dev);
1085 netif_stop_queue (params->dev);
1086 }
1087 return 0;
1088
1089 case REMOTE_NDIS_QUERY_MSG:
1090 return rndis_query_response (configNr,
1091 (rndis_query_msg_type *) buf);
1092
1093 case REMOTE_NDIS_SET_MSG:
1094 return rndis_set_response (configNr,
1095 (rndis_set_msg_type *) buf);
1096
1097 case REMOTE_NDIS_RESET_MSG:
1098 DEBUG("%s: REMOTE_NDIS_RESET_MSG\n",
1099 __FUNCTION__ );
1100 return rndis_reset_response (configNr,
1101 (rndis_reset_msg_type *) buf);
1102
1103 case REMOTE_NDIS_KEEPALIVE_MSG:
1104 /* For USB: host does this every 5 seconds */
1105 if (rndis_debug > 1)
1106 DEBUG("%s: REMOTE_NDIS_KEEPALIVE_MSG\n",
1107 __FUNCTION__ );
1108 return rndis_keepalive_response (configNr,
1109 (rndis_keepalive_msg_type *)
1110 buf);
1111
1112 default:
1113 /* At least Windows XP emits some undefined RNDIS messages.
1114 * In one case those messages seemed to relate to the host
1115 * suspending itself.
1116 */
1117 printk (KERN_WARNING
1118 "%s: unknown RNDIS message 0x%08X len %d\n",
1119 __FUNCTION__ , MsgType, MsgLength);
1120 {
1121 unsigned i;
1122 for (i = 0; i < MsgLength; i += 16) {
1123 DEBUG ("%03d: "
1124 " %02x %02x %02x %02x"
1125 " %02x %02x %02x %02x"
1126 " %02x %02x %02x %02x"
1127 " %02x %02x %02x %02x"
1128 "\n",
1129 i,
1130 buf[i], buf [i+1],
1131 buf[i+2], buf[i+3],
1132 buf[i+4], buf [i+5],
1133 buf[i+6], buf[i+7],
1134 buf[i+8], buf [i+9],
1135 buf[i+10], buf[i+11],
1136 buf[i+12], buf [i+13],
1137 buf[i+14], buf[i+15]);
1138 }
1139 }
1140 break;
1141 }
1142
1143 return -ENOTSUPP;
1144 }
1145
1146 int rndis_register (int (* rndis_control_ack) (struct net_device *))
1147 {
1148 u8 i;
1149
1150 for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1151 if (!rndis_per_dev_params [i].used) {
1152 rndis_per_dev_params [i].used = 1;
1153 rndis_per_dev_params [i].ack = rndis_control_ack;
1154 DEBUG("%s: configNr = %d\n", __FUNCTION__, i);
1155 return i;
1156 }
1157 }
1158 DEBUG("failed\n");
1159
1160 return -1;
1161 }
1162
1163 void rndis_deregister (int configNr)
1164 {
1165 DEBUG("%s: \n", __FUNCTION__ );
1166
1167 if (configNr >= RNDIS_MAX_CONFIGS) return;
1168 rndis_per_dev_params [configNr].used = 0;
1169
1170 return;
1171 }
1172
1173 int rndis_set_param_dev (u8 configNr, struct net_device *dev,
1174 struct net_device_stats *stats,
1175 u16 *cdc_filter)
1176 {
1177 DEBUG("%s:\n", __FUNCTION__ );
1178 if (!dev || !stats) return -1;
1179 if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1180
1181 rndis_per_dev_params [configNr].dev = dev;
1182 rndis_per_dev_params [configNr].stats = stats;
1183 rndis_per_dev_params [configNr].filter = cdc_filter;
1184
1185 return 0;
1186 }
1187
1188 int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr)
1189 {
1190 DEBUG("%s:\n", __FUNCTION__ );
1191 if (!vendorDescr) return -1;
1192 if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1193
1194 rndis_per_dev_params [configNr].vendorID = vendorID;
1195 rndis_per_dev_params [configNr].vendorDescr = vendorDescr;
1196
1197 return 0;
1198 }
1199
1200 int rndis_set_param_medium (u8 configNr, u32 medium, u32 speed)
1201 {
1202 DEBUG("%s: %u %u\n", __FUNCTION__, medium, speed);
1203 if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1204
1205 rndis_per_dev_params [configNr].medium = medium;
1206 rndis_per_dev_params [configNr].speed = speed;
1207
1208 return 0;
1209 }
1210
1211 void rndis_add_hdr (struct sk_buff *skb)
1212 {
1213 struct rndis_packet_msg_type *header;
1214
1215 if (!skb)
1216 return;
1217 header = (void *) skb_push (skb, sizeof *header);
1218 memset (header, 0, sizeof *header);
1219 header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
1220 header->MessageLength = cpu_to_le32(skb->len);
1221 header->DataOffset = __constant_cpu_to_le32 (36);
1222 header->DataLength = cpu_to_le32(skb->len - sizeof *header);
1223 }
1224
1225 void rndis_free_response (int configNr, u8 *buf)
1226 {
1227 rndis_resp_t *r;
1228 struct list_head *act, *tmp;
1229
1230 list_for_each_safe (act, tmp,
1231 &(rndis_per_dev_params [configNr].resp_queue))
1232 {
1233 r = list_entry (act, rndis_resp_t, list);
1234 if (r && r->buf == buf) {
1235 list_del (&r->list);
1236 kfree (r);
1237 }
1238 }
1239 }
1240
1241 u8 *rndis_get_next_response (int configNr, u32 *length)
1242 {
1243 rndis_resp_t *r;
1244 struct list_head *act, *tmp;
1245
1246 if (!length) return NULL;
1247
1248 list_for_each_safe (act, tmp,
1249 &(rndis_per_dev_params [configNr].resp_queue))
1250 {
1251 r = list_entry (act, rndis_resp_t, list);
1252 if (!r->send) {
1253 r->send = 1;
1254 *length = r->length;
1255 return r->buf;
1256 }
1257 }
1258
1259 return NULL;
1260 }
1261
1262 static rndis_resp_t *rndis_add_response (int configNr, u32 length)
1263 {
1264 rndis_resp_t *r;
1265
1266 /* NOTE: this gets copied into ether.c USB_BUFSIZ bytes ... */
1267 r = kmalloc (sizeof (rndis_resp_t) + length, GFP_ATOMIC);
1268 if (!r) return NULL;
1269
1270 r->buf = (u8 *) (r + 1);
1271 r->length = length;
1272 r->send = 0;
1273
1274 list_add_tail (&r->list,
1275 &(rndis_per_dev_params [configNr].resp_queue));
1276 return r;
1277 }
1278
1279 int rndis_rm_hdr(struct sk_buff *skb)
1280 {
1281 /* tmp points to a struct rndis_packet_msg_type */
1282 __le32 *tmp = (void *) skb->data;
1283
1284 /* MessageType, MessageLength */
1285 if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
1286 != get_unaligned(tmp++))
1287 return -EINVAL;
1288 tmp++;
1289
1290 /* DataOffset, DataLength */
1291 if (!skb_pull(skb, le32_to_cpu(get_unaligned(tmp++))
1292 + 8 /* offset of DataOffset */))
1293 return -EOVERFLOW;
1294 skb_trim(skb, le32_to_cpu(get_unaligned(tmp++)));
1295
1296 return 0;
1297 }
1298
1299 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1300
1301 static int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof,
1302 void *data)
1303 {
1304 char *out = page;
1305 int len;
1306 rndis_params *param = (rndis_params *) data;
1307
1308 out += snprintf (out, count,
1309 "Config Nr. %d\n"
1310 "used : %s\n"
1311 "state : %s\n"
1312 "medium : 0x%08X\n"
1313 "speed : %d\n"
1314 "cable : %s\n"
1315 "vendor ID : 0x%08X\n"
1316 "vendor : %s\n",
1317 param->confignr, (param->used) ? "y" : "n",
1318 ({ char *s = "?";
1319 switch (param->state) {
1320 case RNDIS_UNINITIALIZED:
1321 s = "RNDIS_UNINITIALIZED"; break;
1322 case RNDIS_INITIALIZED:
1323 s = "RNDIS_INITIALIZED"; break;
1324 case RNDIS_DATA_INITIALIZED:
1325 s = "RNDIS_DATA_INITIALIZED"; break;
1326 }; s; }),
1327 param->medium,
1328 (param->media_state) ? 0 : param->speed*100,
1329 (param->media_state) ? "disconnected" : "connected",
1330 param->vendorID, param->vendorDescr);
1331
1332 len = out - page;
1333 len -= off;
1334
1335 if (len < count) {
1336 *eof = 1;
1337 if (len <= 0)
1338 return 0;
1339 } else
1340 len = count;
1341
1342 *start = page + off;
1343 return len;
1344 }
1345
1346 static int rndis_proc_write (struct file *file, const char __user *buffer,
1347 unsigned long count, void *data)
1348 {
1349 rndis_params *p = data;
1350 u32 speed = 0;
1351 int i, fl_speed = 0;
1352
1353 for (i = 0; i < count; i++) {
1354 char c;
1355 if (get_user(c, buffer))
1356 return -EFAULT;
1357 switch (c) {
1358 case '0':
1359 case '1':
1360 case '2':
1361 case '3':
1362 case '4':
1363 case '5':
1364 case '6':
1365 case '7':
1366 case '8':
1367 case '9':
1368 fl_speed = 1;
1369 speed = speed*10 + c - '0';
1370 break;
1371 case 'C':
1372 case 'c':
1373 rndis_signal_connect (p->confignr);
1374 break;
1375 case 'D':
1376 case 'd':
1377 rndis_signal_disconnect(p->confignr);
1378 break;
1379 default:
1380 if (fl_speed) p->speed = speed;
1381 else DEBUG ("%c is not valid\n", c);
1382 break;
1383 }
1384
1385 buffer++;
1386 }
1387
1388 return count;
1389 }
1390
1391 #define NAME_TEMPLATE "driver/rndis-%03d"
1392
1393 static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
1394
1395 #endif /* CONFIG_USB_GADGET_DEBUG_FILES */
1396
1397
1398 int __init rndis_init (void)
1399 {
1400 u8 i;
1401
1402 for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1403 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1404 char name [20];
1405
1406 sprintf (name, NAME_TEMPLATE, i);
1407 if (!(rndis_connect_state [i]
1408 = create_proc_entry (name, 0660, NULL)))
1409 {
1410 DEBUG ("%s :remove entries", __FUNCTION__);
1411 while (i) {
1412 sprintf (name, NAME_TEMPLATE, --i);
1413 remove_proc_entry (name, NULL);
1414 }
1415 DEBUG ("\n");
1416 return -EIO;
1417 }
1418
1419 rndis_connect_state [i]->nlink = 1;
1420 rndis_connect_state [i]->write_proc = rndis_proc_write;
1421 rndis_connect_state [i]->read_proc = rndis_proc_read;
1422 rndis_connect_state [i]->data = (void *)
1423 (rndis_per_dev_params + i);
1424 #endif
1425 rndis_per_dev_params [i].confignr = i;
1426 rndis_per_dev_params [i].used = 0;
1427 rndis_per_dev_params [i].state = RNDIS_UNINITIALIZED;
1428 rndis_per_dev_params [i].media_state
1429 = NDIS_MEDIA_STATE_DISCONNECTED;
1430 INIT_LIST_HEAD (&(rndis_per_dev_params [i].resp_queue));
1431 }
1432
1433 return 0;
1434 }
1435
1436 void rndis_exit (void)
1437 {
1438 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1439 u8 i;
1440 char name [20];
1441
1442 for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1443 sprintf (name, NAME_TEMPLATE, i);
1444 remove_proc_entry (name, NULL);
1445 }
1446 #endif
1447 }
1448
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