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4324fd49 DB |
1 | /* |
2 | * CDC Ethernet based networking peripherals | |
3 | * Copyright (C) 2003-2005 by David Brownell | |
ad55d71a | 4 | * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync) |
4324fd49 DB |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | ||
21 | // #define DEBUG // error path messages, extra info | |
22 | // #define VERBOSE // more; success messages | |
23 | ||
4324fd49 | 24 | #include <linux/module.h> |
4324fd49 DB |
25 | #include <linux/init.h> |
26 | #include <linux/netdevice.h> | |
27 | #include <linux/etherdevice.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/ethtool.h> | |
30 | #include <linux/workqueue.h> | |
31 | #include <linux/mii.h> | |
32 | #include <linux/usb.h> | |
a8c28f23 | 33 | #include <linux/usb/cdc.h> |
4324fd49 DB |
34 | |
35 | #include "usbnet.h" | |
36 | ||
37 | ||
ad55d71a OAVR |
38 | #if defined(CONFIG_USB_NET_RNDIS_HOST) || defined(CONFIG_USB_NET_RNDIS_HOST_MODULE) |
39 | ||
40 | static int is_rndis(struct usb_interface_descriptor *desc) | |
41 | { | |
42 | return desc->bInterfaceClass == USB_CLASS_COMM | |
43 | && desc->bInterfaceSubClass == 2 | |
44 | && desc->bInterfaceProtocol == 0xff; | |
45 | } | |
46 | ||
47 | static int is_activesync(struct usb_interface_descriptor *desc) | |
48 | { | |
49 | return desc->bInterfaceClass == USB_CLASS_MISC | |
50 | && desc->bInterfaceSubClass == 1 | |
51 | && desc->bInterfaceProtocol == 1; | |
52 | } | |
53 | ||
54 | #else | |
55 | ||
56 | #define is_rndis(desc) 0 | |
57 | #define is_activesync(desc) 0 | |
58 | ||
59 | #endif | |
60 | ||
4324fd49 DB |
61 | /* |
62 | * probes control interface, claims data interface, collects the bulk | |
63 | * endpoints, activates data interface (if needed), maybe sets MTU. | |
64 | * all pure cdc, except for certain firmware workarounds, and knowing | |
65 | * that rndis uses one different rule. | |
66 | */ | |
67 | int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf) | |
68 | { | |
69 | u8 *buf = intf->cur_altsetting->extra; | |
70 | int len = intf->cur_altsetting->extralen; | |
71 | struct usb_interface_descriptor *d; | |
72 | struct cdc_state *info = (void *) &dev->data; | |
73 | int status; | |
74 | int rndis; | |
75 | struct usb_driver *driver = driver_of(intf); | |
76 | ||
77 | if (sizeof dev->data < sizeof *info) | |
78 | return -EDOM; | |
79 | ||
80 | /* expect strict spec conformance for the descriptors, but | |
81 | * cope with firmware which stores them in the wrong place | |
82 | */ | |
83 | if (len == 0 && dev->udev->actconfig->extralen) { | |
84 | /* Motorola SB4100 (and others: Brad Hards says it's | |
85 | * from a Broadcom design) put CDC descriptors here | |
86 | */ | |
87 | buf = dev->udev->actconfig->extra; | |
88 | len = dev->udev->actconfig->extralen; | |
89 | if (len) | |
90 | dev_dbg(&intf->dev, | |
91 | "CDC descriptors on config\n"); | |
92 | } | |
93 | ||
4149b72e DB |
94 | /* Maybe CDC descriptors are after the endpoint? This bug has |
95 | * been seen on some 2Wire Inc RNDIS-ish products. | |
96 | */ | |
97 | if (len == 0) { | |
98 | struct usb_host_endpoint *hep; | |
99 | ||
100 | hep = intf->cur_altsetting->endpoint; | |
101 | if (hep) { | |
102 | buf = hep->extra; | |
103 | len = hep->extralen; | |
104 | } | |
105 | if (len) | |
106 | dev_dbg(&intf->dev, | |
107 | "CDC descriptors on endpoint\n"); | |
108 | } | |
109 | ||
4324fd49 DB |
110 | /* this assumes that if there's a non-RNDIS vendor variant |
111 | * of cdc-acm, it'll fail RNDIS requests cleanly. | |
112 | */ | |
ad55d71a OAVR |
113 | rndis = is_rndis(&intf->cur_altsetting->desc) |
114 | || is_activesync(&intf->cur_altsetting->desc); | |
4324fd49 DB |
115 | |
116 | memset(info, 0, sizeof *info); | |
117 | info->control = intf; | |
118 | while (len > 3) { | |
119 | if (buf [1] != USB_DT_CS_INTERFACE) | |
120 | goto next_desc; | |
121 | ||
122 | /* use bDescriptorSubType to identify the CDC descriptors. | |
123 | * We expect devices with CDC header and union descriptors. | |
124 | * For CDC Ethernet we need the ethernet descriptor. | |
125 | * For RNDIS, ignore two (pointless) CDC modem descriptors | |
126 | * in favor of a complicated OID-based RPC scheme doing what | |
127 | * CDC Ethernet achieves with a simple descriptor. | |
128 | */ | |
129 | switch (buf [2]) { | |
130 | case USB_CDC_HEADER_TYPE: | |
131 | if (info->header) { | |
132 | dev_dbg(&intf->dev, "extra CDC header\n"); | |
133 | goto bad_desc; | |
134 | } | |
135 | info->header = (void *) buf; | |
136 | if (info->header->bLength != sizeof *info->header) { | |
137 | dev_dbg(&intf->dev, "CDC header len %u\n", | |
138 | info->header->bLength); | |
139 | goto bad_desc; | |
140 | } | |
141 | break; | |
ad55d71a OAVR |
142 | case USB_CDC_ACM_TYPE: |
143 | /* paranoia: disambiguate a "real" vendor-specific | |
144 | * modem interface from an RNDIS non-modem. | |
145 | */ | |
146 | if (rndis) { | |
afaee82c | 147 | struct usb_cdc_acm_descriptor *acm; |
ad55d71a | 148 | |
afaee82c DB |
149 | acm = (void *) buf; |
150 | if (acm->bmCapabilities) { | |
ad55d71a OAVR |
151 | dev_dbg(&intf->dev, |
152 | "ACM capabilities %02x, " | |
153 | "not really RNDIS?\n", | |
afaee82c | 154 | acm->bmCapabilities); |
ad55d71a OAVR |
155 | goto bad_desc; |
156 | } | |
157 | } | |
158 | break; | |
4324fd49 DB |
159 | case USB_CDC_UNION_TYPE: |
160 | if (info->u) { | |
161 | dev_dbg(&intf->dev, "extra CDC union\n"); | |
162 | goto bad_desc; | |
163 | } | |
164 | info->u = (void *) buf; | |
165 | if (info->u->bLength != sizeof *info->u) { | |
166 | dev_dbg(&intf->dev, "CDC union len %u\n", | |
167 | info->u->bLength); | |
168 | goto bad_desc; | |
169 | } | |
170 | ||
171 | /* we need a master/control interface (what we're | |
172 | * probed with) and a slave/data interface; union | |
173 | * descriptors sort this all out. | |
174 | */ | |
175 | info->control = usb_ifnum_to_if(dev->udev, | |
176 | info->u->bMasterInterface0); | |
177 | info->data = usb_ifnum_to_if(dev->udev, | |
178 | info->u->bSlaveInterface0); | |
179 | if (!info->control || !info->data) { | |
180 | dev_dbg(&intf->dev, | |
181 | "master #%u/%p slave #%u/%p\n", | |
182 | info->u->bMasterInterface0, | |
183 | info->control, | |
184 | info->u->bSlaveInterface0, | |
185 | info->data); | |
186 | goto bad_desc; | |
187 | } | |
188 | if (info->control != intf) { | |
189 | dev_dbg(&intf->dev, "bogus CDC Union\n"); | |
190 | /* Ambit USB Cable Modem (and maybe others) | |
191 | * interchanges master and slave interface. | |
192 | */ | |
193 | if (info->data == intf) { | |
194 | info->data = info->control; | |
195 | info->control = intf; | |
196 | } else | |
197 | goto bad_desc; | |
198 | } | |
199 | ||
200 | /* a data interface altsetting does the real i/o */ | |
201 | d = &info->data->cur_altsetting->desc; | |
202 | if (d->bInterfaceClass != USB_CLASS_CDC_DATA) { | |
203 | dev_dbg(&intf->dev, "slave class %u\n", | |
204 | d->bInterfaceClass); | |
205 | goto bad_desc; | |
206 | } | |
207 | break; | |
208 | case USB_CDC_ETHERNET_TYPE: | |
209 | if (info->ether) { | |
210 | dev_dbg(&intf->dev, "extra CDC ether\n"); | |
211 | goto bad_desc; | |
212 | } | |
213 | info->ether = (void *) buf; | |
214 | if (info->ether->bLength != sizeof *info->ether) { | |
215 | dev_dbg(&intf->dev, "CDC ether len %u\n", | |
216 | info->ether->bLength); | |
217 | goto bad_desc; | |
218 | } | |
219 | dev->hard_mtu = le16_to_cpu( | |
220 | info->ether->wMaxSegmentSize); | |
221 | /* because of Zaurus, we may be ignoring the host | |
222 | * side link address we were given. | |
223 | */ | |
224 | break; | |
225 | } | |
226 | next_desc: | |
227 | len -= buf [0]; /* bLength */ | |
228 | buf += buf [0]; | |
229 | } | |
230 | ||
786e3dfb BD |
231 | /* Microsoft ActiveSync based and some regular RNDIS devices lack the |
232 | * CDC descriptors, so we'll hard-wire the interfaces and not check | |
233 | * for descriptors. | |
ad55d71a | 234 | */ |
786e3dfb | 235 | if (rndis && !info->u) { |
ad55d71a OAVR |
236 | info->control = usb_ifnum_to_if(dev->udev, 0); |
237 | info->data = usb_ifnum_to_if(dev->udev, 1); | |
238 | if (!info->control || !info->data) { | |
239 | dev_dbg(&intf->dev, | |
786e3dfb | 240 | "rndis: master #0/%p slave #1/%p\n", |
ad55d71a OAVR |
241 | info->control, |
242 | info->data); | |
243 | goto bad_desc; | |
244 | } | |
245 | ||
246 | } else if (!info->header || !info->u || (!rndis && !info->ether)) { | |
4324fd49 DB |
247 | dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n", |
248 | info->header ? "" : "header ", | |
249 | info->u ? "" : "union ", | |
250 | info->ether ? "" : "ether "); | |
251 | goto bad_desc; | |
252 | } | |
253 | ||
254 | /* claim data interface and set it up ... with side effects. | |
255 | * network traffic can't flow until an altsetting is enabled. | |
256 | */ | |
257 | status = usb_driver_claim_interface(driver, info->data, dev); | |
258 | if (status < 0) | |
259 | return status; | |
260 | status = usbnet_get_endpoints(dev, info->data); | |
261 | if (status < 0) { | |
262 | /* ensure immediate exit from usbnet_disconnect */ | |
263 | usb_set_intfdata(info->data, NULL); | |
264 | usb_driver_release_interface(driver, info->data); | |
265 | return status; | |
266 | } | |
267 | ||
268 | /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */ | |
269 | dev->status = NULL; | |
270 | if (info->control->cur_altsetting->desc.bNumEndpoints == 1) { | |
271 | struct usb_endpoint_descriptor *desc; | |
272 | ||
273 | dev->status = &info->control->cur_altsetting->endpoint [0]; | |
274 | desc = &dev->status->desc; | |
b333d5bf | 275 | if (!usb_endpoint_is_int_in(desc) |
4324fd49 DB |
276 | || (le16_to_cpu(desc->wMaxPacketSize) |
277 | < sizeof(struct usb_cdc_notification)) | |
278 | || !desc->bInterval) { | |
279 | dev_dbg(&intf->dev, "bad notification endpoint\n"); | |
280 | dev->status = NULL; | |
281 | } | |
282 | } | |
283 | if (rndis && !dev->status) { | |
284 | dev_dbg(&intf->dev, "missing RNDIS status endpoint\n"); | |
285 | usb_set_intfdata(info->data, NULL); | |
286 | usb_driver_release_interface(driver, info->data); | |
287 | return -ENODEV; | |
288 | } | |
289 | return 0; | |
290 | ||
291 | bad_desc: | |
292 | dev_info(&dev->udev->dev, "bad CDC descriptors\n"); | |
293 | return -ENODEV; | |
294 | } | |
295 | EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind); | |
296 | ||
297 | void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf) | |
298 | { | |
299 | struct cdc_state *info = (void *) &dev->data; | |
300 | struct usb_driver *driver = driver_of(intf); | |
301 | ||
302 | /* disconnect master --> disconnect slave */ | |
303 | if (intf == info->control && info->data) { | |
304 | /* ensure immediate exit from usbnet_disconnect */ | |
305 | usb_set_intfdata(info->data, NULL); | |
306 | usb_driver_release_interface(driver, info->data); | |
307 | info->data = NULL; | |
308 | } | |
309 | ||
310 | /* and vice versa (just in case) */ | |
311 | else if (intf == info->data && info->control) { | |
312 | /* ensure immediate exit from usbnet_disconnect */ | |
313 | usb_set_intfdata(info->control, NULL); | |
314 | usb_driver_release_interface(driver, info->control); | |
315 | info->control = NULL; | |
316 | } | |
317 | } | |
318 | EXPORT_SYMBOL_GPL(usbnet_cdc_unbind); | |
319 | ||
4324fd49 DB |
320 | /*------------------------------------------------------------------------- |
321 | * | |
322 | * Communications Device Class, Ethernet Control model | |
323 | * | |
324 | * Takes two interfaces. The DATA interface is inactive till an altsetting | |
325 | * is selected. Configuration data includes class descriptors. There's | |
326 | * an optional status endpoint on the control interface. | |
327 | * | |
328 | * This should interop with whatever the 2.4 "CDCEther.c" driver | |
329 | * (by Brad Hards) talked with, with more functionality. | |
330 | * | |
331 | *-------------------------------------------------------------------------*/ | |
332 | ||
333 | static void dumpspeed(struct usbnet *dev, __le32 *speeds) | |
334 | { | |
335 | if (netif_msg_timer(dev)) | |
336 | devinfo(dev, "link speeds: %u kbps up, %u kbps down", | |
337 | __le32_to_cpu(speeds[0]) / 1000, | |
338 | __le32_to_cpu(speeds[1]) / 1000); | |
339 | } | |
340 | ||
341 | static void cdc_status(struct usbnet *dev, struct urb *urb) | |
342 | { | |
343 | struct usb_cdc_notification *event; | |
344 | ||
345 | if (urb->actual_length < sizeof *event) | |
346 | return; | |
347 | ||
348 | /* SPEED_CHANGE can get split into two 8-byte packets */ | |
349 | if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) { | |
350 | dumpspeed(dev, (__le32 *) urb->transfer_buffer); | |
351 | return; | |
352 | } | |
353 | ||
354 | event = urb->transfer_buffer; | |
355 | switch (event->bNotificationType) { | |
356 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: | |
357 | if (netif_msg_timer(dev)) | |
358 | devdbg(dev, "CDC: carrier %s", | |
359 | event->wValue ? "on" : "off"); | |
360 | if (event->wValue) | |
361 | netif_carrier_on(dev->net); | |
362 | else | |
363 | netif_carrier_off(dev->net); | |
364 | break; | |
365 | case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */ | |
366 | if (netif_msg_timer(dev)) | |
367 | devdbg(dev, "CDC: speed change (len %d)", | |
368 | urb->actual_length); | |
369 | if (urb->actual_length != (sizeof *event + 8)) | |
370 | set_bit(EVENT_STS_SPLIT, &dev->flags); | |
371 | else | |
372 | dumpspeed(dev, (__le32 *) &event[1]); | |
373 | break; | |
374 | /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS), | |
375 | * but there are no standard formats for the response data. | |
376 | */ | |
377 | default: | |
378 | deverr(dev, "CDC: unexpected notification %02x!", | |
379 | event->bNotificationType); | |
380 | break; | |
381 | } | |
382 | } | |
383 | ||
384 | static u8 nibble(unsigned char c) | |
385 | { | |
386 | if (likely(isdigit(c))) | |
387 | return c - '0'; | |
388 | c = toupper(c); | |
389 | if (likely(isxdigit(c))) | |
390 | return 10 + c - 'A'; | |
391 | return 0; | |
392 | } | |
393 | ||
394 | static inline int | |
395 | get_ethernet_addr(struct usbnet *dev, struct usb_cdc_ether_desc *e) | |
396 | { | |
397 | int tmp, i; | |
398 | unsigned char buf [13]; | |
399 | ||
400 | tmp = usb_string(dev->udev, e->iMACAddress, buf, sizeof buf); | |
401 | if (tmp != 12) { | |
402 | dev_dbg(&dev->udev->dev, | |
403 | "bad MAC string %d fetch, %d\n", e->iMACAddress, tmp); | |
404 | if (tmp >= 0) | |
405 | tmp = -EINVAL; | |
406 | return tmp; | |
407 | } | |
408 | for (i = tmp = 0; i < 6; i++, tmp += 2) | |
409 | dev->net->dev_addr [i] = | |
410 | (nibble(buf [tmp]) << 4) + nibble(buf [tmp + 1]); | |
411 | return 0; | |
412 | } | |
413 | ||
414 | static int cdc_bind(struct usbnet *dev, struct usb_interface *intf) | |
415 | { | |
416 | int status; | |
417 | struct cdc_state *info = (void *) &dev->data; | |
418 | ||
419 | status = usbnet_generic_cdc_bind(dev, intf); | |
420 | if (status < 0) | |
421 | return status; | |
422 | ||
423 | status = get_ethernet_addr(dev, info->ether); | |
424 | if (status < 0) { | |
425 | usb_set_intfdata(info->data, NULL); | |
426 | usb_driver_release_interface(driver_of(intf), info->data); | |
427 | return status; | |
428 | } | |
429 | ||
430 | /* FIXME cdc-ether has some multicast code too, though it complains | |
431 | * in routine cases. info->ether describes the multicast support. | |
432 | * Implement that here, manipulating the cdc filter as needed. | |
433 | */ | |
434 | return 0; | |
435 | } | |
436 | ||
437 | static const struct driver_info cdc_info = { | |
438 | .description = "CDC Ethernet Device", | |
439 | .flags = FLAG_ETHER, | |
440 | // .check_connect = cdc_check_connect, | |
441 | .bind = cdc_bind, | |
442 | .unbind = usbnet_cdc_unbind, | |
443 | .status = cdc_status, | |
444 | }; | |
445 | ||
446 | /*-------------------------------------------------------------------------*/ | |
447 | ||
448 | ||
449 | static const struct usb_device_id products [] = { | |
450 | /* | |
451 | * BLACKLIST !! | |
452 | * | |
453 | * First blacklist any products that are egregiously nonconformant | |
454 | * with the CDC Ethernet specs. Minor braindamage we cope with; when | |
455 | * they're not even trying, needing a separate driver is only the first | |
456 | * of the differences to show up. | |
457 | */ | |
458 | ||
459 | #define ZAURUS_MASTER_INTERFACE \ | |
460 | .bInterfaceClass = USB_CLASS_COMM, \ | |
461 | .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \ | |
462 | .bInterfaceProtocol = USB_CDC_PROTO_NONE | |
463 | ||
464 | /* SA-1100 based Sharp Zaurus ("collie"), or compatible; | |
465 | * wire-incompatible with true CDC Ethernet implementations. | |
466 | * (And, it seems, needlessly so...) | |
467 | */ | |
468 | { | |
469 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
470 | | USB_DEVICE_ID_MATCH_DEVICE, | |
471 | .idVendor = 0x04DD, | |
472 | .idProduct = 0x8004, | |
473 | ZAURUS_MASTER_INTERFACE, | |
474 | .driver_info = 0, | |
475 | }, | |
476 | ||
477 | /* PXA-25x based Sharp Zaurii. Note that it seems some of these | |
478 | * (later models especially) may have shipped only with firmware | |
479 | * advertising false "CDC MDLM" compatibility ... but we're not | |
480 | * clear which models did that, so for now let's assume the worst. | |
481 | */ | |
482 | { | |
483 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
484 | | USB_DEVICE_ID_MATCH_DEVICE, | |
485 | .idVendor = 0x04DD, | |
486 | .idProduct = 0x8005, /* A-300 */ | |
487 | ZAURUS_MASTER_INTERFACE, | |
488 | .driver_info = 0, | |
489 | }, { | |
490 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
491 | | USB_DEVICE_ID_MATCH_DEVICE, | |
492 | .idVendor = 0x04DD, | |
493 | .idProduct = 0x8006, /* B-500/SL-5600 */ | |
494 | ZAURUS_MASTER_INTERFACE, | |
495 | .driver_info = 0, | |
496 | }, { | |
497 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
498 | | USB_DEVICE_ID_MATCH_DEVICE, | |
499 | .idVendor = 0x04DD, | |
500 | .idProduct = 0x8007, /* C-700 */ | |
501 | ZAURUS_MASTER_INTERFACE, | |
502 | .driver_info = 0, | |
503 | }, { | |
504 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
505 | | USB_DEVICE_ID_MATCH_DEVICE, | |
506 | .idVendor = 0x04DD, | |
507 | .idProduct = 0x9031, /* C-750 C-760 */ | |
508 | ZAURUS_MASTER_INTERFACE, | |
509 | .driver_info = 0, | |
510 | }, { | |
511 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
512 | | USB_DEVICE_ID_MATCH_DEVICE, | |
513 | .idVendor = 0x04DD, | |
514 | .idProduct = 0x9032, /* SL-6000 */ | |
515 | ZAURUS_MASTER_INTERFACE, | |
516 | .driver_info = 0, | |
517 | }, { | |
518 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
519 | | USB_DEVICE_ID_MATCH_DEVICE, | |
520 | .idVendor = 0x04DD, | |
521 | /* reported with some C860 units */ | |
522 | .idProduct = 0x9050, /* C-860 */ | |
523 | ZAURUS_MASTER_INTERFACE, | |
524 | .driver_info = 0, | |
525 | }, | |
526 | ||
efcaa205 DB |
527 | /* Olympus has some models with a Zaurus-compatible option. |
528 | * R-1000 uses a FreeScale i.MXL cpu (ARMv4T) | |
529 | */ | |
530 | { | |
531 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
532 | | USB_DEVICE_ID_MATCH_DEVICE, | |
533 | .idVendor = 0x07B4, | |
534 | .idProduct = 0x0F02, /* R-1000 */ | |
535 | ZAURUS_MASTER_INTERFACE, | |
536 | .driver_info = 0, | |
537 | }, | |
538 | ||
4324fd49 DB |
539 | /* |
540 | * WHITELIST!!! | |
541 | * | |
542 | * CDC Ether uses two interfaces, not necessarily consecutive. | |
543 | * We match the main interface, ignoring the optional device | |
544 | * class so we could handle devices that aren't exclusively | |
545 | * CDC ether. | |
546 | * | |
547 | * NOTE: this match must come AFTER entries blacklisting devices | |
548 | * because of bugs/quirks in a given product (like Zaurus, above). | |
549 | */ | |
550 | { | |
551 | USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET, | |
552 | USB_CDC_PROTO_NONE), | |
553 | .driver_info = (unsigned long) &cdc_info, | |
554 | }, | |
555 | { }, // END | |
556 | }; | |
557 | MODULE_DEVICE_TABLE(usb, products); | |
558 | ||
559 | static struct usb_driver cdc_driver = { | |
4324fd49 DB |
560 | .name = "cdc_ether", |
561 | .id_table = products, | |
562 | .probe = usbnet_probe, | |
563 | .disconnect = usbnet_disconnect, | |
564 | .suspend = usbnet_suspend, | |
565 | .resume = usbnet_resume, | |
566 | }; | |
567 | ||
568 | ||
569 | static int __init cdc_init(void) | |
570 | { | |
f8ac232a | 571 | BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) |
4324fd49 DB |
572 | < sizeof(struct cdc_state))); |
573 | ||
574 | return usb_register(&cdc_driver); | |
575 | } | |
576 | module_init(cdc_init); | |
577 | ||
578 | static void __exit cdc_exit(void) | |
579 | { | |
580 | usb_deregister(&cdc_driver); | |
581 | } | |
582 | module_exit(cdc_exit); | |
583 | ||
584 | MODULE_AUTHOR("David Brownell"); | |
585 | MODULE_DESCRIPTION("USB CDC Ethernet devices"); | |
586 | MODULE_LICENSE("GPL"); |