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Merge tag 'v3.10.105' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / gadget / rndis.c
1 /*
2 * RNDIS MSG parser
3 *
4 * Authors: Benedikt Spranger, Pengutronix
5 * Robert Schwebel, Pengutronix
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2, as published by the Free Software Foundation.
10 *
11 * This software was originally developed in conformance with
12 * Microsoft's Remote NDIS Specification License Agreement.
13 *
14 * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
15 * Fixed message length bug in init_response
16 *
17 * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
18 * Fixed rndis_rm_hdr length bug.
19 *
20 * Copyright (C) 2004 by David Brownell
21 * updates to merge with Linux 2.6, better match RNDIS spec
22 */
23
24 #include <linux/module.h>
25 #include <linux/moduleparam.h>
26 #include <linux/kernel.h>
27 #include <linux/errno.h>
28 #include <linux/init.h>
29 #include <linux/list.h>
30 #include <linux/proc_fs.h>
31 #include <linux/slab.h>
32 #include <linux/seq_file.h>
33 #include <linux/netdevice.h>
34
35 #include <asm/io.h>
36 #include <asm/byteorder.h>
37 #include <asm/unaligned.h>
38
39
40 #undef VERBOSE_DEBUG
41
42 #include "rndis.h"
43
44
45 /* The driver for your USB chip needs to support ep0 OUT to work with
46 * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
47 *
48 * Windows hosts need an INF file like Documentation/usb/linux.inf
49 * and will be happier if you provide the host_addr module parameter.
50 */
51
52 #if 0
53 static int rndis_debug = 0;
54 module_param (rndis_debug, int, 0);
55 MODULE_PARM_DESC (rndis_debug, "enable debugging");
56 #else
57 #define rndis_debug 0
58 #endif
59
60 #define RNDIS_MAX_CONFIGS 1
61
62 int rndis_ul_max_pkt_per_xfer_rcvd;
63 module_param(rndis_ul_max_pkt_per_xfer_rcvd, int, S_IRUGO);
64 MODULE_PARM_DESC(rndis_ul_max_pkt_per_xfer_rcvd,
65 "Max num of REMOTE_NDIS_PACKET_MSGs received in a single transfer");
66
67 int rndis_ul_max_xfer_size_rcvd;
68 module_param(rndis_ul_max_xfer_size_rcvd, int, S_IRUGO);
69 MODULE_PARM_DESC(rndis_ul_max_xfer_size_rcvd,
70 "Max size of bus transfer received");
71
72
73 static rndis_params rndis_per_dev_params[RNDIS_MAX_CONFIGS];
74
75 /* Driver Version */
76 static const __le32 rndis_driver_version = cpu_to_le32(1);
77
78 /* Function Prototypes */
79 static rndis_resp_t *rndis_add_response(int configNr, u32 length);
80
81
82 /* supported OIDs */
83 static const u32 oid_supported_list[] =
84 {
85 /* the general stuff */
86 RNDIS_OID_GEN_SUPPORTED_LIST,
87 RNDIS_OID_GEN_HARDWARE_STATUS,
88 RNDIS_OID_GEN_MEDIA_SUPPORTED,
89 RNDIS_OID_GEN_MEDIA_IN_USE,
90 RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE,
91 RNDIS_OID_GEN_LINK_SPEED,
92 RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE,
93 RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE,
94 RNDIS_OID_GEN_VENDOR_ID,
95 RNDIS_OID_GEN_VENDOR_DESCRIPTION,
96 RNDIS_OID_GEN_VENDOR_DRIVER_VERSION,
97 RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
98 RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE,
99 RNDIS_OID_GEN_MEDIA_CONNECT_STATUS,
100 RNDIS_OID_GEN_PHYSICAL_MEDIUM,
101
102 /* the statistical stuff */
103 RNDIS_OID_GEN_XMIT_OK,
104 RNDIS_OID_GEN_RCV_OK,
105 RNDIS_OID_GEN_XMIT_ERROR,
106 RNDIS_OID_GEN_RCV_ERROR,
107 RNDIS_OID_GEN_RCV_NO_BUFFER,
108 #ifdef RNDIS_OPTIONAL_STATS
109 RNDIS_OID_GEN_DIRECTED_BYTES_XMIT,
110 RNDIS_OID_GEN_DIRECTED_FRAMES_XMIT,
111 RNDIS_OID_GEN_MULTICAST_BYTES_XMIT,
112 RNDIS_OID_GEN_MULTICAST_FRAMES_XMIT,
113 RNDIS_OID_GEN_BROADCAST_BYTES_XMIT,
114 RNDIS_OID_GEN_BROADCAST_FRAMES_XMIT,
115 RNDIS_OID_GEN_DIRECTED_BYTES_RCV,
116 RNDIS_OID_GEN_DIRECTED_FRAMES_RCV,
117 RNDIS_OID_GEN_MULTICAST_BYTES_RCV,
118 RNDIS_OID_GEN_MULTICAST_FRAMES_RCV,
119 RNDIS_OID_GEN_BROADCAST_BYTES_RCV,
120 RNDIS_OID_GEN_BROADCAST_FRAMES_RCV,
121 RNDIS_OID_GEN_RCV_CRC_ERROR,
122 RNDIS_OID_GEN_TRANSMIT_QUEUE_LENGTH,
123 #endif /* RNDIS_OPTIONAL_STATS */
124
125 /* mandatory 802.3 */
126 /* the general stuff */
127 RNDIS_OID_802_3_PERMANENT_ADDRESS,
128 RNDIS_OID_802_3_CURRENT_ADDRESS,
129 RNDIS_OID_802_3_MULTICAST_LIST,
130 RNDIS_OID_802_3_MAC_OPTIONS,
131 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
132
133 /* the statistical stuff */
134 RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT,
135 RNDIS_OID_802_3_XMIT_ONE_COLLISION,
136 RNDIS_OID_802_3_XMIT_MORE_COLLISIONS,
137 #ifdef RNDIS_OPTIONAL_STATS
138 RNDIS_OID_802_3_XMIT_DEFERRED,
139 RNDIS_OID_802_3_XMIT_MAX_COLLISIONS,
140 RNDIS_OID_802_3_RCV_OVERRUN,
141 RNDIS_OID_802_3_XMIT_UNDERRUN,
142 RNDIS_OID_802_3_XMIT_HEARTBEAT_FAILURE,
143 RNDIS_OID_802_3_XMIT_TIMES_CRS_LOST,
144 RNDIS_OID_802_3_XMIT_LATE_COLLISIONS,
145 #endif /* RNDIS_OPTIONAL_STATS */
146
147 #ifdef RNDIS_PM
148 /* PM and wakeup are "mandatory" for USB, but the RNDIS specs
149 * don't say what they mean ... and the NDIS specs are often
150 * confusing and/or ambiguous in this context. (That is, more
151 * so than their specs for the other OIDs.)
152 *
153 * FIXME someone who knows what these should do, please
154 * implement them!
155 */
156
157 /* power management */
158 OID_PNP_CAPABILITIES,
159 OID_PNP_QUERY_POWER,
160 OID_PNP_SET_POWER,
161
162 #ifdef RNDIS_WAKEUP
163 /* wake up host */
164 OID_PNP_ENABLE_WAKE_UP,
165 OID_PNP_ADD_WAKE_UP_PATTERN,
166 OID_PNP_REMOVE_WAKE_UP_PATTERN,
167 #endif /* RNDIS_WAKEUP */
168 #endif /* RNDIS_PM */
169 };
170
171 unsigned long rndis_test_reset_msg_cnt = 0;
172 u32 rndis_test_last_msg_id = 0;
173 extern u32 rndis_test_last_resp_id;
174
175 extern unsigned long rndis_test_rx_usb_in;
176 extern unsigned long rndis_test_rx_net_out;
177 extern unsigned long rndis_test_rx_nomem;
178 extern unsigned long rndis_test_rx_error;
179
180 extern unsigned long rndis_test_tx_net_in;
181 extern unsigned long rndis_test_tx_busy;
182 extern unsigned long rndis_test_tx_usb_out;
183 extern unsigned long rndis_test_tx_complete;
184
185 /* NDIS Functions */
186 static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
187 unsigned buf_len, rndis_resp_t *r)
188 {
189 int retval = -ENOTSUPP;
190 u32 length = 4; /* usually */
191 __le32 *outbuf;
192 int i, count;
193 rndis_query_cmplt_type *resp;
194 struct net_device *net;
195 struct rtnl_link_stats64 temp;
196 const struct rtnl_link_stats64 *stats;
197
198 if (!r) return -ENOMEM;
199 resp = (rndis_query_cmplt_type *)r->buf;
200
201 if (!resp) return -ENOMEM;
202
203 if (buf_len && rndis_debug > 1) {
204 pr_debug("query OID %08x value, len %d:\n", OID, buf_len);
205 for (i = 0; i < buf_len; i += 16) {
206 pr_debug("%03d: %08x %08x %08x %08x\n", i,
207 get_unaligned_le32(&buf[i]),
208 get_unaligned_le32(&buf[i + 4]),
209 get_unaligned_le32(&buf[i + 8]),
210 get_unaligned_le32(&buf[i + 12]));
211 }
212 }
213
214 /* response goes here, right after the header */
215 outbuf = (__le32 *)&resp[1];
216 resp->InformationBufferOffset = cpu_to_le32(16);
217
218 net = rndis_per_dev_params[configNr].dev;
219 stats = dev_get_stats(net, &temp);
220
221 if (rndis_debug){
222 pr_debug("gen_ndis_query_resp, OID is 0x%x, configNr is %d\n", OID, configNr) ;
223 }
224
225 switch (OID) {
226
227 /* general oids (table 4-1) */
228
229 /* mandatory */
230 case RNDIS_OID_GEN_SUPPORTED_LIST:
231 pr_debug("%s: RNDIS_OID_GEN_SUPPORTED_LIST\n", __func__);
232 length = sizeof(oid_supported_list);
233 count = length / sizeof(u32);
234 for (i = 0; i < count; i++)
235 outbuf[i] = cpu_to_le32(oid_supported_list[i]);
236 retval = 0;
237 break;
238
239 /* mandatory */
240 case RNDIS_OID_GEN_HARDWARE_STATUS:
241 pr_debug("%s: RNDIS_OID_GEN_HARDWARE_STATUS\n", __func__);
242 /* Bogus question!
243 * Hardware must be ready to receive high level protocols.
244 * BTW:
245 * reddite ergo quae sunt Caesaris Caesari
246 * et quae sunt Dei Deo!
247 */
248 *outbuf = cpu_to_le32(0);
249 retval = 0;
250 break;
251
252 /* mandatory */
253 case RNDIS_OID_GEN_MEDIA_SUPPORTED:
254 pr_debug("%s: RNDIS_OID_GEN_MEDIA_SUPPORTED\n", __func__);
255 *outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium);
256 retval = 0;
257 break;
258
259 /* mandatory */
260 case RNDIS_OID_GEN_MEDIA_IN_USE:
261 pr_debug("%s: RNDIS_OID_GEN_MEDIA_IN_USE\n", __func__);
262 /* one medium, one transport... (maybe you do it better) */
263 *outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium);
264 retval = 0;
265 break;
266
267 /* mandatory */
268 case RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE:
269 pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__);
270 if (rndis_per_dev_params[configNr].dev) {
271 *outbuf = cpu_to_le32(
272 rndis_per_dev_params[configNr].dev->mtu);
273 retval = 0;
274 }
275 break;
276
277 /* mandatory */
278 case RNDIS_OID_GEN_LINK_SPEED:
279 if (rndis_debug > 1)
280 pr_debug("%s: RNDIS_OID_GEN_LINK_SPEED\n", __func__);
281 if (rndis_per_dev_params[configNr].media_state
282 == RNDIS_MEDIA_STATE_DISCONNECTED)
283 *outbuf = cpu_to_le32(0);
284 else
285 *outbuf = cpu_to_le32(
286 rndis_per_dev_params[configNr].speed);
287
288 if (rndis_debug){
289 pr_debug("OID_GEN_LINK_SPEED, speed %d. data: rx_in %lu, rx_out %lu, rx_nomem %lu, rx_error %lu, tx_in %lu, tx_out %lu, tx_busy %lu, tx_complete %lu, last_msg_id: 0x%x, last_resp_id: 0x%x, RNDIS reset cnt: 0x%lu, queue stopped? %d\n",
290 rndis_per_dev_params[configNr].speed, rndis_test_rx_usb_in, rndis_test_rx_net_out, rndis_test_rx_nomem, rndis_test_rx_error, rndis_test_tx_net_in,
291 rndis_test_tx_usb_out, rndis_test_tx_busy , rndis_test_tx_complete, rndis_test_last_msg_id, rndis_test_last_resp_id, rndis_test_reset_msg_cnt,
292 netif_queue_stopped(rndis_per_dev_params[configNr].dev)) ;
293 }
294
295 retval = 0;
296 break;
297
298 /* mandatory */
299 case RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE:
300 pr_debug("%s: RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__);
301 if (rndis_per_dev_params[configNr].dev) {
302 *outbuf = cpu_to_le32(
303 rndis_per_dev_params[configNr].dev->mtu);
304 retval = 0;
305 }
306 break;
307
308 /* mandatory */
309 case RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE:
310 pr_debug("%s: RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__);
311 if (rndis_per_dev_params[configNr].dev) {
312 *outbuf = cpu_to_le32(
313 rndis_per_dev_params[configNr].dev->mtu);
314 retval = 0;
315 }
316 break;
317
318 /* mandatory */
319 case RNDIS_OID_GEN_VENDOR_ID:
320 pr_debug("%s: RNDIS_OID_GEN_VENDOR_ID\n", __func__);
321 *outbuf = cpu_to_le32(
322 rndis_per_dev_params[configNr].vendorID);
323 retval = 0;
324 break;
325
326 /* mandatory */
327 case RNDIS_OID_GEN_VENDOR_DESCRIPTION:
328 pr_debug("%s: RNDIS_OID_GEN_VENDOR_DESCRIPTION\n", __func__);
329 if (rndis_per_dev_params[configNr].vendorDescr) {
330 length = strlen(rndis_per_dev_params[configNr].
331 vendorDescr);
332 memcpy(outbuf,
333 rndis_per_dev_params[configNr].vendorDescr,
334 length);
335 } else {
336 outbuf[0] = 0;
337 }
338 retval = 0;
339 break;
340
341 case RNDIS_OID_GEN_VENDOR_DRIVER_VERSION:
342 pr_debug("%s: RNDIS_OID_GEN_VENDOR_DRIVER_VERSION\n", __func__);
343 /* Created as LE */
344 *outbuf = rndis_driver_version;
345 retval = 0;
346 break;
347
348 /* mandatory */
349 case RNDIS_OID_GEN_CURRENT_PACKET_FILTER:
350 pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER\n", __func__);
351 *outbuf = cpu_to_le32(*rndis_per_dev_params[configNr].filter);
352 retval = 0;
353 break;
354
355 /* mandatory */
356 case RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE:
357 pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__);
358 *outbuf = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
359 retval = 0;
360 break;
361
362 /* mandatory */
363 case RNDIS_OID_GEN_MEDIA_CONNECT_STATUS:
364 if (rndis_debug > 1)
365 pr_debug("%s: RNDIS_OID_GEN_MEDIA_CONNECT_STATUS\n", __func__);
366 *outbuf = cpu_to_le32(rndis_per_dev_params[configNr]
367 .media_state);
368 if (rndis_debug){
369 pr_debug("OID_GEN_MEDIA_CONNECT_STATUS, media_state %d\n", rndis_per_dev_params[configNr].media_state) ;
370 }
371 retval = 0;
372 break;
373
374 case RNDIS_OID_GEN_PHYSICAL_MEDIUM:
375 pr_debug("%s: RNDIS_OID_GEN_PHYSICAL_MEDIUM\n", __func__);
376 *outbuf = cpu_to_le32(0);
377 retval = 0;
378 break;
379
380 /* The RNDIS specification is incomplete/wrong. Some versions
381 * of MS-Windows expect OIDs that aren't specified there. Other
382 * versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
383 */
384 case RNDIS_OID_GEN_MAC_OPTIONS: /* from WinME */
385 pr_debug("%s: RNDIS_OID_GEN_MAC_OPTIONS\n", __func__);
386 *outbuf = cpu_to_le32(
387 RNDIS_MAC_OPTION_RECEIVE_SERIALIZED
388 | RNDIS_MAC_OPTION_FULL_DUPLEX);
389 retval = 0;
390 break;
391
392 /* statistics OIDs (table 4-2) */
393
394 /* mandatory */
395 case RNDIS_OID_GEN_XMIT_OK:
396 if (rndis_debug > 1)
397 pr_debug("%s: RNDIS_OID_GEN_XMIT_OK\n", __func__);
398 if (stats) {
399 *outbuf = cpu_to_le32(stats->tx_packets
400 - stats->tx_errors - stats->tx_dropped);
401 retval = 0;
402 }
403 break;
404
405 /* mandatory */
406 case RNDIS_OID_GEN_RCV_OK:
407 if (rndis_debug > 1)
408 pr_debug("%s: RNDIS_OID_GEN_RCV_OK\n", __func__);
409 if (stats) {
410 *outbuf = cpu_to_le32(stats->rx_packets
411 - stats->rx_errors - stats->rx_dropped);
412 retval = 0;
413 }
414 break;
415
416 /* mandatory */
417 case RNDIS_OID_GEN_XMIT_ERROR:
418 if (rndis_debug > 1)
419 pr_debug("%s: RNDIS_OID_GEN_XMIT_ERROR\n", __func__);
420 if (stats) {
421 *outbuf = cpu_to_le32(stats->tx_errors);
422 if (rndis_debug){
423 pr_err("OID_GEN_XMIT_ERROR, stats->tx_errors %llu\n", stats->tx_errors) ;
424 }
425 retval = 0;
426 }
427 break;
428
429 /* mandatory */
430 case RNDIS_OID_GEN_RCV_ERROR:
431 if (rndis_debug > 1)
432 pr_debug("%s: RNDIS_OID_GEN_RCV_ERROR\n", __func__);
433 if (stats) {
434 *outbuf = cpu_to_le32(stats->rx_errors);
435 if (rndis_debug){
436 pr_err("OID_GEN_RCV_ERROR, stats->rx_errors %llu\n", stats->rx_errors) ;
437 }
438 retval = 0;
439 }
440 break;
441
442 /* mandatory */
443 case RNDIS_OID_GEN_RCV_NO_BUFFER:
444 pr_debug("%s: RNDIS_OID_GEN_RCV_NO_BUFFER\n", __func__);
445 if (stats) {
446 *outbuf = cpu_to_le32(stats->rx_dropped);
447 if (rndis_debug){
448 pr_err("OID_GEN_RCV_NO_BUFFER, stats->rx_dropped %llu\n", stats->rx_dropped) ;
449 }
450 retval = 0;
451 }
452 break;
453
454 /* ieee802.3 OIDs (table 4-3) */
455
456 /* mandatory */
457 case RNDIS_OID_802_3_PERMANENT_ADDRESS:
458 pr_debug("%s: RNDIS_OID_802_3_PERMANENT_ADDRESS\n", __func__);
459 if (rndis_per_dev_params[configNr].dev) {
460 length = ETH_ALEN;
461 memcpy(outbuf,
462 rndis_per_dev_params[configNr].host_mac,
463 length);
464 retval = 0;
465 if (rndis_debug){
466 pr_debug("OID_802_3_PERMANENT_ADDRESS, host_mac is %x %x ....\n",
467 rndis_per_dev_params [configNr].host_mac[0],
468 rndis_per_dev_params [configNr].host_mac[1]) ;
469 }
470 }
471 break;
472
473 /* mandatory */
474 case RNDIS_OID_802_3_CURRENT_ADDRESS:
475 pr_debug("%s: RNDIS_OID_802_3_CURRENT_ADDRESS\n", __func__);
476 if (rndis_per_dev_params[configNr].dev) {
477 length = ETH_ALEN;
478 memcpy(outbuf,
479 rndis_per_dev_params [configNr].host_mac,
480 length);
481
482 if (rndis_debug){
483 pr_debug("OID_802_3_CURRENT_ADDRESS, host_mac is %x %x ....\n",
484 rndis_per_dev_params [configNr].host_mac[0],
485 rndis_per_dev_params [configNr].host_mac[1]) ;
486 }
487
488 retval = 0;
489 }
490 break;
491
492 /* mandatory */
493 case RNDIS_OID_802_3_MULTICAST_LIST:
494 pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__);
495 /* Multicast base address only */
496 *outbuf = cpu_to_le32(0xE0000000);
497 retval = 0;
498 break;
499
500 /* mandatory */
501 case RNDIS_OID_802_3_MAXIMUM_LIST_SIZE:
502 pr_debug("%s: RNDIS_OID_802_3_MAXIMUM_LIST_SIZE\n", __func__);
503 /* Multicast base address only */
504 *outbuf = cpu_to_le32(1);
505 retval = 0;
506 break;
507
508 case RNDIS_OID_802_3_MAC_OPTIONS:
509 pr_debug("%s: RNDIS_OID_802_3_MAC_OPTIONS\n", __func__);
510 *outbuf = cpu_to_le32(0);
511 retval = 0;
512 break;
513
514 /* ieee802.3 statistics OIDs (table 4-4) */
515
516 /* mandatory */
517 case RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT:
518 pr_debug("%s: RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__);
519 if (stats) {
520 if (rndis_debug){
521 pr_debug("OID_802_3_RCV_ERROR_ALIGNMENT, stats->rx_frame_errors is %llu\n", stats->rx_frame_errors) ;
522 }
523 *outbuf = cpu_to_le32(stats->rx_frame_errors);
524 retval = 0;
525 }
526 break;
527
528 /* mandatory */
529 case RNDIS_OID_802_3_XMIT_ONE_COLLISION:
530 pr_debug("%s: RNDIS_OID_802_3_XMIT_ONE_COLLISION\n", __func__);
531 *outbuf = cpu_to_le32(0);
532 retval = 0;
533 break;
534
535 /* mandatory */
536 case RNDIS_OID_802_3_XMIT_MORE_COLLISIONS:
537 pr_debug("%s: RNDIS_OID_802_3_XMIT_MORE_COLLISIONS\n", __func__);
538 *outbuf = cpu_to_le32(0);
539 retval = 0;
540 break;
541
542 default:
543 pr_warning("%s: query unknown OID 0x%08X\n",
544 __func__, OID);
545 }
546 if (retval < 0){
547 length = 0;
548 pr_warning("%s: bad gen_ndis_query_resp, retval is 0x%d\n", __func__, retval) ;
549 }
550
551 resp->InformationBufferLength = cpu_to_le32(length);
552 r->length = length + sizeof(*resp);
553 resp->MessageLength = cpu_to_le32(r->length);
554 return retval;
555 }
556
557 static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len,
558 rndis_resp_t *r)
559 {
560 rndis_set_cmplt_type *resp;
561 int i, retval = -ENOTSUPP;
562 struct rndis_params *params;
563
564 if (!r)
565 return -ENOMEM;
566 resp = (rndis_set_cmplt_type *)r->buf;
567 if (!resp)
568 return -ENOMEM;
569
570 if (buf_len && rndis_debug > 1) {
571 pr_debug("set OID %08x value, len %d:\n", OID, buf_len);
572 for (i = 0; i < buf_len; i += 16) {
573 pr_debug("%03d: %08x %08x %08x %08x\n", i,
574 get_unaligned_le32(&buf[i]),
575 get_unaligned_le32(&buf[i + 4]),
576 get_unaligned_le32(&buf[i + 8]),
577 get_unaligned_le32(&buf[i + 12]));
578 }
579 }
580
581 if (rndis_debug){
582 pr_debug("gen_ndis_set_resp, OID is 0x%x\n", OID) ;
583 }
584
585 params = &rndis_per_dev_params[configNr];
586 switch (OID) {
587 case RNDIS_OID_GEN_CURRENT_PACKET_FILTER:
588
589 /* these NDIS_PACKET_TYPE_* bitflags are shared with
590 * cdc_filter; it's not RNDIS-specific
591 * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
592 * PROMISCUOUS, DIRECTED,
593 * MULTICAST, ALL_MULTICAST, BROADCAST
594 */
595 *params->filter = (u16)get_unaligned_le32(buf);
596 pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER %08x\n",
597 __func__, *params->filter);
598
599 /* this call has a significant side effect: it's
600 * what makes the packet flow start and stop, like
601 * activating the CDC Ethernet altsetting.
602 */
603 retval = 0;
604 if (*params->filter) {
605 params->state = RNDIS_DATA_INITIALIZED;
606 netif_carrier_on(params->dev);
607 if (netif_running(params->dev))
608 netif_wake_queue(params->dev);
609 } else {
610 params->state = RNDIS_INITIALIZED;
611 netif_carrier_off(params->dev);
612 netif_stop_queue(params->dev);
613 }
614 break;
615
616 case RNDIS_OID_802_3_MULTICAST_LIST:
617 /* I think we can ignore this */
618 pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__);
619 retval = 0;
620 break;
621
622 default:
623 pr_warning("%s: set unknown OID 0x%08X, size %d\n",
624 __func__, OID, buf_len);
625 }
626
627 if (retval){
628 pr_debug("gen_ndis_set_resp, <==== retval is 0x%d\n", retval) ;
629 }
630
631 return retval;
632 }
633
634 /*
635 * Response Functions
636 */
637
638 static int rndis_init_response(int configNr, rndis_init_msg_type *buf)
639 {
640 rndis_init_cmplt_type *resp;
641 rndis_resp_t *r;
642 struct rndis_params *params = rndis_per_dev_params + configNr;
643
644 if (!params->dev)
645 return -ENOTSUPP;
646
647 r = rndis_add_response(configNr, sizeof(rndis_init_cmplt_type));
648 if (!r)
649 return -ENOMEM;
650 resp = (rndis_init_cmplt_type *)r->buf;
651
652 resp->MessageType = cpu_to_le32(RNDIS_MSG_INIT_C);
653 resp->MessageLength = cpu_to_le32(52);
654 resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
655 resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
656 resp->MajorVersion = cpu_to_le32(RNDIS_MAJOR_VERSION);
657 resp->MinorVersion = cpu_to_le32(RNDIS_MINOR_VERSION);
658 resp->DeviceFlags = cpu_to_le32(RNDIS_DF_CONNECTIONLESS);
659 resp->Medium = cpu_to_le32(RNDIS_MEDIUM_802_3);
660 resp->MaxPacketsPerTransfer = cpu_to_le32(params->max_pkt_per_xfer);
661 resp->MaxTransferSize = cpu_to_le32(params->max_pkt_per_xfer *
662 (params->dev->mtu
663 + sizeof(struct ethhdr)
664 + sizeof(struct rndis_packet_msg_type)
665 + 22));
666 resp->PacketAlignmentFactor = cpu_to_le32(0);
667 resp->AFListOffset = cpu_to_le32(0);
668 resp->AFListSize = cpu_to_le32(0);
669
670 params->resp_avail(params->v);
671 return 0;
672 }
673
674 static int rndis_query_response(int configNr, rndis_query_msg_type *buf)
675 {
676 rndis_query_cmplt_type *resp;
677 rndis_resp_t *r;
678 struct rndis_params *params = rndis_per_dev_params + configNr;
679
680 /* pr_debug("%s: OID = %08X\n", __func__, cpu_to_le32(buf->OID)); */
681 if (!params->dev)
682 return -ENOTSUPP;
683
684 /*
685 * we need more memory:
686 * gen_ndis_query_resp expects enough space for
687 * rndis_query_cmplt_type followed by data.
688 * oid_supported_list is the largest data reply
689 */
690 r = rndis_add_response(configNr,
691 sizeof(oid_supported_list) + sizeof(rndis_query_cmplt_type));
692
693 if (!r){
694 pr_err("rndis_query_response, rndis_add_response return NULL\n") ;
695 return -ENOMEM;
696 }
697 resp = (rndis_query_cmplt_type *)r->buf;
698
699 resp->MessageType = cpu_to_le32(RNDIS_MSG_QUERY_C);
700 resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
701
702 if (gen_ndis_query_resp(configNr, le32_to_cpu(buf->OID),
703 le32_to_cpu(buf->InformationBufferOffset)
704 + 8 + (u8 *)buf,
705 le32_to_cpu(buf->InformationBufferLength),
706 r)) {
707 /* OID not supported */
708 resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED);
709 resp->MessageLength = cpu_to_le32(sizeof *resp);
710 resp->InformationBufferLength = cpu_to_le32(0);
711 resp->InformationBufferOffset = cpu_to_le32(0);
712 } else
713 resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
714
715 params->resp_avail(params->v);
716 return 0;
717 }
718
719 static int rndis_set_response(int configNr, rndis_set_msg_type *buf)
720 {
721 u32 BufLength, BufOffset;
722 rndis_set_cmplt_type *resp;
723 rndis_resp_t *r;
724 struct rndis_params *params = rndis_per_dev_params + configNr;
725
726 r = rndis_add_response(configNr, sizeof(rndis_set_cmplt_type));
727
728 if (!r){
729 pr_err("rndis_set_response, rndis_add_response return NULL\n") ;
730 return -ENOMEM;
731 }
732 resp = (rndis_set_cmplt_type *)r->buf;
733
734 BufLength = le32_to_cpu(buf->InformationBufferLength);
735 BufOffset = le32_to_cpu(buf->InformationBufferOffset);
736
737 #ifdef VERBOSE_DEBUG
738 pr_debug("%s: Length: %d\n", __func__, BufLength);
739 pr_debug("%s: Offset: %d\n", __func__, BufOffset);
740 pr_debug("%s: InfoBuffer: ", __func__);
741
742 for (i = 0; i < BufLength; i++) {
743 pr_debug("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
744 }
745
746 pr_debug("\n");
747 #endif
748
749 resp->MessageType = cpu_to_le32(RNDIS_MSG_SET_C);
750 resp->MessageLength = cpu_to_le32(16);
751 resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
752 if (gen_ndis_set_resp(configNr, le32_to_cpu(buf->OID),
753 ((u8 *)buf) + 8 + BufOffset, BufLength, r))
754 resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED);
755 else
756 resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
757
758 params->resp_avail(params->v);
759 return 0;
760 }
761
762 static int rndis_reset_response(int configNr, rndis_reset_msg_type *buf)
763 {
764 rndis_reset_cmplt_type *resp;
765 rndis_resp_t *r;
766 struct rndis_params *params = rndis_per_dev_params + configNr;
767
768 /* patch for RNDIS reset msg : clear the previous response ~*/
769 u8 *buf_legacy;
770 u32 length;
771
772 pr_debug("%s: rndis reset !! clean the old resposes...\n", __func__);
773 while ((buf_legacy = rndis_get_next_response(configNr, &length)))
774 rndis_free_response(configNr, buf_legacy);
775
776 rndis_test_reset_msg_cnt ++ ;
777 /* patch for RNDIS reset msg */
778
779 r = rndis_add_response(configNr, sizeof(rndis_reset_cmplt_type));
780 if (!r)
781 return -ENOMEM;
782 resp = (rndis_reset_cmplt_type *)r->buf;
783
784 resp->MessageType = cpu_to_le32(RNDIS_MSG_RESET_C);
785 resp->MessageLength = cpu_to_le32(16);
786 resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
787 /* resent information */
788 resp->AddressingReset = cpu_to_le32(1);
789
790 params->resp_avail(params->v);
791 return 0;
792 }
793
794 static int rndis_keepalive_response(int configNr,
795 rndis_keepalive_msg_type *buf)
796 {
797 rndis_keepalive_cmplt_type *resp;
798 rndis_resp_t *r;
799 struct rndis_params *params = rndis_per_dev_params + configNr;
800
801 /* host "should" check only in RNDIS_DATA_INITIALIZED state */
802
803 r = rndis_add_response(configNr, sizeof(rndis_keepalive_cmplt_type));
804
805 if (!r){
806 pr_err("rndis_keepalive_response, rndis_add_response return NULL\n") ;
807 return -ENOMEM;
808 }
809
810 resp = (rndis_keepalive_cmplt_type *)r->buf;
811
812 resp->MessageType = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C);
813 resp->MessageLength = cpu_to_le32(16);
814 resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
815 resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
816
817 params->resp_avail(params->v);
818
819 if (rndis_debug){
820 pr_debug("rndis_keepalive_response, data: rx_in %lu, rx_out %lu, rx_nomem %lu, rx_error %lu, tx_in %lu, tx_out %lu, tx_busy %lu, tx_complete %lu, last_msg_id: 0x%x, last_resp_id: 0x%x, RNDIS reset cnt: 0x%lu, queue stopped? %d\n",
821 rndis_test_rx_usb_in, rndis_test_rx_net_out, rndis_test_rx_nomem, rndis_test_rx_error, rndis_test_tx_net_in,
822 rndis_test_tx_usb_out, rndis_test_tx_busy , rndis_test_tx_complete, rndis_test_last_msg_id, rndis_test_last_resp_id, rndis_test_reset_msg_cnt,
823 netif_queue_stopped(params->dev)) ;
824 }
825
826 return 0;
827 }
828
829
830 /*
831 * Device to Host Comunication
832 */
833 static int rndis_indicate_status_msg(int configNr, u32 status)
834 {
835 rndis_indicate_status_msg_type *resp;
836 rndis_resp_t *r;
837 struct rndis_params *params = rndis_per_dev_params + configNr;
838
839 if (params->state == RNDIS_UNINITIALIZED)
840 return -ENOTSUPP;
841
842 r = rndis_add_response(configNr,
843 sizeof(rndis_indicate_status_msg_type));
844 if (!r)
845 return -ENOMEM;
846 resp = (rndis_indicate_status_msg_type *)r->buf;
847
848 resp->MessageType = cpu_to_le32(RNDIS_MSG_INDICATE);
849 resp->MessageLength = cpu_to_le32(20);
850 resp->Status = cpu_to_le32(status);
851 resp->StatusBufferLength = cpu_to_le32(0);
852 resp->StatusBufferOffset = cpu_to_le32(0);
853
854 params->resp_avail(params->v);
855 return 0;
856 }
857
858 int rndis_signal_connect(int configNr)
859 {
860 rndis_per_dev_params[configNr].media_state
861 = RNDIS_MEDIA_STATE_CONNECTED;
862 return rndis_indicate_status_msg(configNr,
863 RNDIS_STATUS_MEDIA_CONNECT);
864 }
865
866 int rndis_signal_disconnect(int configNr)
867 {
868 rndis_per_dev_params[configNr].media_state
869 = RNDIS_MEDIA_STATE_DISCONNECTED;
870 return rndis_indicate_status_msg(configNr,
871 RNDIS_STATUS_MEDIA_DISCONNECT);
872 }
873
874 void rndis_uninit(int configNr)
875 {
876 u8 *buf;
877 u32 length;
878
879 if (configNr >= RNDIS_MAX_CONFIGS)
880 return;
881 rndis_per_dev_params[configNr].state = RNDIS_UNINITIALIZED;
882
883 /* drain the response queue */
884 while ((buf = rndis_get_next_response(configNr, &length)))
885 rndis_free_response(configNr, buf);
886 }
887
888 void rndis_set_host_mac(int configNr, const u8 *addr)
889 {
890 rndis_per_dev_params[configNr].host_mac = addr;
891 }
892
893 /*
894 * Message Parser
895 */
896 int rndis_msg_parser(u8 configNr, u8 *buf)
897 {
898 u32 MsgType, MsgLength, MsgID;
899 __le32 *tmp;
900 struct rndis_params *params;
901
902 if (!buf)
903 return -ENOMEM;
904
905 tmp = (__le32 *)buf;
906 MsgType = get_unaligned_le32(tmp++);
907 MsgLength = get_unaligned_le32(tmp++);
908 MsgID = get_unaligned_le32(tmp++);
909 if (rndis_debug){
910 pr_debug("rndis_msg_parser, MsgType is %d,configNr is %d, RequestID is 0x%x\n", MsgType ,configNr, MsgID) ;
911 }
912 rndis_test_last_msg_id = MsgID ;
913
914 if (configNr >= RNDIS_MAX_CONFIGS)
915 return -ENOTSUPP;
916 params = &rndis_per_dev_params[configNr];
917
918 /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
919 * rx/tx statistics and link status, in addition to KEEPALIVE traffic
920 * and normal HC level polling to see if there's any IN traffic.
921 */
922
923 /* For USB: responses may take up to 10 seconds */
924 switch (MsgType) {
925 case RNDIS_MSG_INIT:
926 pr_debug("%s: RNDIS_MSG_INIT\n",
927 __func__);
928 params->state = RNDIS_INITIALIZED;
929 return rndis_init_response(configNr,
930 (rndis_init_msg_type *)buf);
931
932 case RNDIS_MSG_HALT:
933 pr_debug("%s: RNDIS_MSG_HALT\n",
934 __func__);
935 params->state = RNDIS_UNINITIALIZED;
936 if (params->dev) {
937 netif_carrier_off(params->dev);
938 netif_stop_queue(params->dev);
939 }
940 return 0;
941
942 case RNDIS_MSG_QUERY:
943 return rndis_query_response(configNr,
944 (rndis_query_msg_type *)buf);
945
946 case RNDIS_MSG_SET:
947 return rndis_set_response(configNr,
948 (rndis_set_msg_type *)buf);
949
950 case RNDIS_MSG_RESET:
951 pr_debug("%s: RNDIS_MSG_RESET\n",
952 __func__);
953 return rndis_reset_response(configNr,
954 (rndis_reset_msg_type *)buf);
955
956 case RNDIS_MSG_KEEPALIVE:
957 /* For USB: host does this every 5 seconds */
958 if (rndis_debug > 1)
959 pr_debug("%s: RNDIS_MSG_KEEPALIVE\n",
960 __func__);
961 return rndis_keepalive_response(configNr,
962 (rndis_keepalive_msg_type *)
963 buf);
964
965 default:
966 /* At least Windows XP emits some undefined RNDIS messages.
967 * In one case those messages seemed to relate to the host
968 * suspending itself.
969 */
970 pr_warning("%s: unknown RNDIS message 0x%08X len %d\n",
971 __func__, MsgType, MsgLength);
972
973 {
974 unsigned i;
975 for (i = 0; i < MsgLength; i += 16) {
976 pr_debug("%03d: "
977 " %02x %02x %02x %02x"
978 " %02x %02x %02x %02x"
979 " %02x %02x %02x %02x"
980 " %02x %02x %02x %02x"
981 "\n",
982 i,
983 buf[i], buf [i+1],
984 buf[i+2], buf[i+3],
985 buf[i+4], buf [i+5],
986 buf[i+6], buf[i+7],
987 buf[i+8], buf [i+9],
988 buf[i+10], buf[i+11],
989 buf[i+12], buf [i+13],
990 buf[i+14], buf[i+15]);
991 }
992 }
993 //print_hex_dump_bytes(__func__, DUMP_PREFIX_OFFSET,
994 // buf, MsgLength);
995 break;
996 }
997
998 return -ENOTSUPP;
999 }
1000
1001 int rndis_register(void (*resp_avail)(void *v), void *v)
1002 {
1003 u8 i;
1004
1005 if (!resp_avail)
1006 return -EINVAL;
1007
1008 for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1009 if (!rndis_per_dev_params[i].used) {
1010 rndis_per_dev_params[i].used = 1;
1011 rndis_per_dev_params[i].resp_avail = resp_avail;
1012 rndis_per_dev_params[i].v = v;
1013 rndis_per_dev_params[i].max_pkt_per_xfer = 1;
1014 pr_debug("%s: configNr = %d\n", __func__, i);
1015 return i;
1016 }
1017 }
1018 pr_debug("failed\n");
1019
1020 return -ENODEV;
1021 }
1022
1023 void rndis_deregister(int configNr)
1024 {
1025 pr_debug("%s:\n", __func__);
1026
1027 if (configNr >= RNDIS_MAX_CONFIGS) return;
1028 rndis_per_dev_params[configNr].used = 0;
1029 }
1030
1031 int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter)
1032 {
1033 pr_debug("%s:\n", __func__);
1034 if (!dev)
1035 return -EINVAL;
1036 if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1037
1038 rndis_per_dev_params[configNr].dev = dev;
1039 rndis_per_dev_params[configNr].filter = cdc_filter;
1040
1041 /* reset aggregation stats for every set_alt */
1042 rndis_ul_max_xfer_size_rcvd = 0;
1043 rndis_ul_max_pkt_per_xfer_rcvd = 0;
1044
1045 return 0;
1046 }
1047
1048 int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr)
1049 {
1050 pr_debug("%s:\n", __func__);
1051 if (!vendorDescr) return -1;
1052 if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1053
1054 rndis_per_dev_params[configNr].vendorID = vendorID;
1055 rndis_per_dev_params[configNr].vendorDescr = vendorDescr;
1056
1057 return 0;
1058 }
1059
1060 int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed)
1061 {
1062 pr_debug("%s: %u %u\n", __func__, medium, speed);
1063 if (configNr >= RNDIS_MAX_CONFIGS) return -1;
1064
1065 rndis_per_dev_params[configNr].medium = medium;
1066 rndis_per_dev_params[configNr].speed = speed;
1067
1068 return 0;
1069 }
1070
1071 void rndis_set_max_pkt_xfer(u8 configNr, u8 max_pkt_per_xfer)
1072 {
1073 pr_debug("%s:\n", __func__);
1074
1075 rndis_per_dev_params[configNr].max_pkt_per_xfer = max_pkt_per_xfer;
1076 }
1077
1078 void rndis_add_hdr(struct sk_buff *skb)
1079 {
1080 struct rndis_packet_msg_type *header;
1081
1082 if (!skb)
1083 return;
1084 header = (void *)skb_push(skb, sizeof(*header));
1085 memset(header, 0, sizeof *header);
1086 header->MessageType = cpu_to_le32(RNDIS_MSG_PACKET);
1087 header->MessageLength = cpu_to_le32(skb->len);
1088 header->DataOffset = cpu_to_le32(36);
1089 header->DataLength = cpu_to_le32(skb->len - sizeof(*header));
1090 }
1091
1092 void rndis_free_response(int configNr, u8 *buf)
1093 {
1094 rndis_resp_t *r;
1095 struct list_head *act, *tmp;
1096
1097 list_for_each_safe(act, tmp,
1098 &(rndis_per_dev_params[configNr].resp_queue))
1099 {
1100 if (!act)
1101 continue;
1102
1103 r = list_entry(act, rndis_resp_t, list);
1104 if (r && r->buf == buf) {
1105 list_del(&r->list);
1106 kfree(r);
1107 }
1108 }
1109 }
1110
1111 u8 *rndis_get_next_response(int configNr, u32 *length)
1112 {
1113 rndis_resp_t *r;
1114 struct list_head *act, *tmp;
1115
1116 if (!length) return NULL;
1117
1118 list_for_each_safe(act, tmp,
1119 &(rndis_per_dev_params[configNr].resp_queue))
1120 {
1121 r = list_entry(act, rndis_resp_t, list);
1122 if (!r->send) {
1123 r->send = 1;
1124 *length = r->length;
1125 return r->buf;
1126 }
1127 }
1128
1129 return NULL;
1130 }
1131
1132 static rndis_resp_t *rndis_add_response(int configNr, u32 length)
1133 {
1134 rndis_resp_t *r;
1135
1136 /* NOTE: this gets copied into ether.c USB_BUFSIZ bytes ... */
1137 r = kmalloc(sizeof(rndis_resp_t) + length, GFP_ATOMIC);
1138 if (!r) return NULL;
1139
1140 r->buf = (u8 *)(r + 1);
1141 r->length = length;
1142 r->send = 0;
1143
1144 list_add_tail(&r->list,
1145 &(rndis_per_dev_params[configNr].resp_queue));
1146 return r;
1147 }
1148
1149 int rndis_rm_hdr(struct gether *port,
1150 struct sk_buff *skb,
1151 struct sk_buff_head *list)
1152 {
1153 int num_pkts = 0;
1154
1155 if (skb->len > rndis_ul_max_xfer_size_rcvd)
1156 rndis_ul_max_xfer_size_rcvd = skb->len;
1157
1158 while (skb->len) {
1159 struct rndis_packet_msg_type *hdr;
1160 struct sk_buff *skb2;
1161 u32 msg_len, data_offset, data_len;
1162
1163 if (skb->len < sizeof *hdr) {
1164 pr_err("invalid rndis pkt: skblen:%u hdr_len:%lu",
1165 skb->len, (long)sizeof *hdr);
1166 dev_kfree_skb_any(skb);
1167 return -EINVAL;
1168 }
1169
1170 hdr = (void *)skb->data;
1171 msg_len = le32_to_cpu(hdr->MessageLength);
1172 data_offset = le32_to_cpu(hdr->DataOffset);
1173 data_len = le32_to_cpu(hdr->DataLength);
1174
1175 if (skb->len < msg_len ||
1176 ((data_offset + data_len + 8) > msg_len)) {
1177 pr_err("invalid rndis message: %d/%d/%d/%d, len:%d\n",
1178 le32_to_cpu(hdr->MessageType),
1179 msg_len, data_offset, data_len, skb->len);
1180 dev_kfree_skb_any(skb);
1181 return -EOVERFLOW;
1182 }
1183
1184 if (le32_to_cpu(hdr->MessageType) != RNDIS_MSG_PACKET) {
1185 pr_err("invalid rndis message: %d/%d/%d/%d, len:%d\n",
1186 le32_to_cpu(hdr->MessageType),
1187 msg_len, data_offset, data_len, skb->len);
1188 dev_kfree_skb_any(skb);
1189 return -EINVAL;
1190 }
1191
1192 num_pkts++;
1193
1194 skb_pull(skb, data_offset + 8);
1195
1196 if (data_len == skb->len ||
1197 data_len == (skb->len - 1)) {
1198 skb_trim(skb, data_len);
1199 break;
1200 }
1201
1202 skb2 = skb_clone(skb, GFP_ATOMIC);
1203 if (!skb2) {
1204 pr_err("%s:skb clone failed\n", __func__);
1205 dev_kfree_skb_any(skb);
1206 return -ENOMEM;
1207 }
1208
1209 skb_pull(skb, msg_len - sizeof *hdr);
1210 skb_trim(skb2, data_len);
1211 skb_queue_tail(list, skb2);
1212 }
1213
1214 if (num_pkts > rndis_ul_max_pkt_per_xfer_rcvd)
1215 rndis_ul_max_pkt_per_xfer_rcvd = num_pkts;
1216
1217 skb_queue_tail(list, skb);
1218
1219 return 0;
1220 }
1221
1222 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1223
1224 static int rndis_proc_show(struct seq_file *m, void *v)
1225 {
1226 rndis_params *param = m->private;
1227
1228 seq_printf(m,
1229 "Config Nr. %d\n"
1230 "used : %s\n"
1231 "state : %s\n"
1232 "medium : 0x%08X\n"
1233 "speed : %d\n"
1234 "cable : %s\n"
1235 "vendor ID : 0x%08X\n"
1236 "vendor : %s\n"
1237 "ul-max-xfer-size:%d max-xfer-size-rcvd: %d\n"
1238 "ul-max-pkts-per-xfer:%d max-pkts-per-xfer-rcvd:%d\n",
1239 param->confignr, (param->used) ? "y" : "n",
1240 ({ char *s = "?";
1241 switch (param->state) {
1242 case RNDIS_UNINITIALIZED:
1243 s = "RNDIS_UNINITIALIZED"; break;
1244 case RNDIS_INITIALIZED:
1245 s = "RNDIS_INITIALIZED"; break;
1246 case RNDIS_DATA_INITIALIZED:
1247 s = "RNDIS_DATA_INITIALIZED"; break;
1248 }; s; }),
1249 param->medium,
1250 (param->media_state) ? 0 : param->speed*100,
1251 (param->media_state) ? "disconnected" : "connected",
1252 param->vendorID, param->vendorDescr,
1253 param->max_pkt_per_xfer *
1254 (param->dev->mtu + sizeof(struct ethhdr) +
1255 sizeof(struct rndis_packet_msg_type) + 22),
1256 rndis_ul_max_xfer_size_rcvd,
1257 param->max_pkt_per_xfer,
1258 rndis_ul_max_pkt_per_xfer_rcvd);
1259 return 0;
1260 }
1261
1262 static ssize_t rndis_proc_write(struct file *file, const char __user *buffer,
1263 size_t count, loff_t *ppos)
1264 {
1265 rndis_params *p = PDE_DATA(file_inode(file));
1266 u32 speed = 0;
1267 int i, fl_speed = 0;
1268
1269 for (i = 0; i < count; i++) {
1270 char c;
1271 if (get_user(c, buffer))
1272 return -EFAULT;
1273 switch (c) {
1274 case '0':
1275 case '1':
1276 case '2':
1277 case '3':
1278 case '4':
1279 case '5':
1280 case '6':
1281 case '7':
1282 case '8':
1283 case '9':
1284 fl_speed = 1;
1285 speed = speed * 10 + c - '0';
1286 break;
1287 case 'C':
1288 case 'c':
1289 rndis_signal_connect(p->confignr);
1290 break;
1291 case 'D':
1292 case 'd':
1293 rndis_signal_disconnect(p->confignr);
1294 break;
1295 default:
1296 if (fl_speed) p->speed = speed;
1297 else pr_debug("%c is not valid\n", c);
1298 break;
1299 }
1300
1301 buffer++;
1302 }
1303
1304 return count;
1305 }
1306
1307 static int rndis_proc_open(struct inode *inode, struct file *file)
1308 {
1309 return single_open(file, rndis_proc_show, PDE_DATA(inode));
1310 }
1311
1312 static const struct file_operations rndis_proc_fops = {
1313 .owner = THIS_MODULE,
1314 .open = rndis_proc_open,
1315 .read = seq_read,
1316 .llseek = seq_lseek,
1317 .release = single_release,
1318 .write = rndis_proc_write,
1319 };
1320
1321 #define NAME_TEMPLATE "driver/rndis-%03d"
1322
1323 static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
1324
1325 #endif /* CONFIG_USB_GADGET_DEBUG_FILES */
1326
1327 static int rndis_test_proc_show(struct seq_file *m, void *v)
1328 {
1329 seq_printf(m, "[RNDIS] rx_in %lu, rx_out %lu, rx_nomem %lu, rx_error %lu, tx_in %lu, tx_out %lu, tx_busy %lu, tx_complete %lu, last_msg_id: 0x%x, last_resp_id: 0x%x, RNDIS reset cnt: %lu, queue stopped? %d\n",
1330 rndis_test_rx_usb_in, rndis_test_rx_net_out, rndis_test_rx_nomem, rndis_test_rx_error, rndis_test_tx_net_in,
1331 rndis_test_tx_usb_out, rndis_test_tx_busy , rndis_test_tx_complete, rndis_test_last_msg_id, rndis_test_last_resp_id, rndis_test_reset_msg_cnt,
1332 netif_queue_stopped(rndis_per_dev_params[0].dev)) ;
1333
1334 return 0;
1335 }
1336
1337 static int rndis_test_proc_open(struct inode *inode, struct file *file)
1338 {
1339 //return single_open(file, rndis_test_proc_show, inode->i_private);
1340 return single_open(file, rndis_test_proc_show, inode->i_private);
1341 }
1342
1343 static ssize_t rndis_test_proc_write(struct file *file, const char __user *buf, size_t length, loff_t *ppos)
1344 {
1345 char msg[32];
1346
1347 if (length >= sizeof(msg)) {
1348 return -EINVAL;
1349 }
1350 if (copy_from_user(msg, buf, length))
1351 return -EFAULT;
1352
1353 msg[length] = 0 ;
1354
1355 return length;
1356 }
1357
1358 static bool rndis_initialized;
1359
1360 static const struct file_operations rndis_test_proc_fops = {
1361 .owner = THIS_MODULE,
1362 .open = rndis_test_proc_open,
1363 .write = rndis_test_proc_write,
1364 .read = seq_read,
1365 .llseek = seq_lseek,
1366
1367 };
1368
1369
1370 static struct proc_dir_entry *rndis_test_proc ;
1371
1372 int rndis_init(void)
1373 {
1374 u8 i;
1375
1376 if (rndis_initialized)
1377 return 0;
1378
1379 rndis_test_proc = proc_create("rndis_test_proc", 0444, NULL,
1380 &rndis_test_proc_fops);
1381
1382 for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1383 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1384 char name [20];
1385
1386 sprintf(name, NAME_TEMPLATE, i);
1387 rndis_connect_state[i] = proc_create_data(name, 0660, NULL,
1388 &rndis_proc_fops,
1389 (void *)(rndis_per_dev_params + i));
1390 if (!rndis_connect_state[i]) {
1391 pr_debug("%s: remove entries", __func__);
1392 while (i) {
1393 sprintf(name, NAME_TEMPLATE, --i);
1394 remove_proc_entry(name, NULL);
1395 }
1396 pr_debug("\n");
1397 return -EIO;
1398 }
1399 #endif
1400 rndis_per_dev_params[i].confignr = i;
1401 rndis_per_dev_params[i].used = 0;
1402 rndis_per_dev_params[i].state = RNDIS_UNINITIALIZED;
1403 rndis_per_dev_params[i].media_state
1404 = RNDIS_MEDIA_STATE_DISCONNECTED;
1405 INIT_LIST_HEAD(&(rndis_per_dev_params[i].resp_queue));
1406 }
1407
1408 rndis_initialized = true;
1409 return 0;
1410 }
1411
1412 void rndis_exit(void)
1413 {
1414 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1415 u8 i;
1416 char name[20];
1417 #endif
1418
1419 if (!rndis_initialized)
1420 return;
1421 rndis_initialized = false;
1422
1423 remove_proc_entry("rndis_test_proc", NULL);
1424
1425 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1426 for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
1427 sprintf(name, NAME_TEMPLATE, i);
1428 remove_proc_entry(name, NULL);
1429 }
1430 #endif
1431 }
kernel source for telekom puls (alcatel/mediatek)