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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> |
3692e94f | 34 | #include <linux/usb/usbnet.h> |
4324fd49 DB |
35 | |
36 | ||
ad55d71a OAVR |
37 | #if defined(CONFIG_USB_NET_RNDIS_HOST) || defined(CONFIG_USB_NET_RNDIS_HOST_MODULE) |
38 | ||
39 | static int is_rndis(struct usb_interface_descriptor *desc) | |
40 | { | |
41 | return desc->bInterfaceClass == USB_CLASS_COMM | |
42 | && desc->bInterfaceSubClass == 2 | |
43 | && desc->bInterfaceProtocol == 0xff; | |
44 | } | |
45 | ||
46 | static int is_activesync(struct usb_interface_descriptor *desc) | |
47 | { | |
48 | return desc->bInterfaceClass == USB_CLASS_MISC | |
49 | && desc->bInterfaceSubClass == 1 | |
50 | && desc->bInterfaceProtocol == 1; | |
51 | } | |
52 | ||
53 | #else | |
54 | ||
55 | #define is_rndis(desc) 0 | |
56 | #define is_activesync(desc) 0 | |
57 | ||
58 | #endif | |
59 | ||
4324fd49 DB |
60 | /* |
61 | * probes control interface, claims data interface, collects the bulk | |
62 | * endpoints, activates data interface (if needed), maybe sets MTU. | |
63 | * all pure cdc, except for certain firmware workarounds, and knowing | |
64 | * that rndis uses one different rule. | |
65 | */ | |
66 | int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf) | |
67 | { | |
68 | u8 *buf = intf->cur_altsetting->extra; | |
69 | int len = intf->cur_altsetting->extralen; | |
70 | struct usb_interface_descriptor *d; | |
71 | struct cdc_state *info = (void *) &dev->data; | |
72 | int status; | |
73 | int rndis; | |
74 | struct usb_driver *driver = driver_of(intf); | |
75 | ||
76 | if (sizeof dev->data < sizeof *info) | |
77 | return -EDOM; | |
78 | ||
79 | /* expect strict spec conformance for the descriptors, but | |
80 | * cope with firmware which stores them in the wrong place | |
81 | */ | |
82 | if (len == 0 && dev->udev->actconfig->extralen) { | |
83 | /* Motorola SB4100 (and others: Brad Hards says it's | |
84 | * from a Broadcom design) put CDC descriptors here | |
85 | */ | |
86 | buf = dev->udev->actconfig->extra; | |
87 | len = dev->udev->actconfig->extralen; | |
88 | if (len) | |
89 | dev_dbg(&intf->dev, | |
90 | "CDC descriptors on config\n"); | |
91 | } | |
92 | ||
4149b72e DB |
93 | /* Maybe CDC descriptors are after the endpoint? This bug has |
94 | * been seen on some 2Wire Inc RNDIS-ish products. | |
95 | */ | |
96 | if (len == 0) { | |
97 | struct usb_host_endpoint *hep; | |
98 | ||
99 | hep = intf->cur_altsetting->endpoint; | |
100 | if (hep) { | |
101 | buf = hep->extra; | |
102 | len = hep->extralen; | |
103 | } | |
104 | if (len) | |
105 | dev_dbg(&intf->dev, | |
106 | "CDC descriptors on endpoint\n"); | |
107 | } | |
108 | ||
4324fd49 DB |
109 | /* this assumes that if there's a non-RNDIS vendor variant |
110 | * of cdc-acm, it'll fail RNDIS requests cleanly. | |
111 | */ | |
ad55d71a OAVR |
112 | rndis = is_rndis(&intf->cur_altsetting->desc) |
113 | || is_activesync(&intf->cur_altsetting->desc); | |
4324fd49 DB |
114 | |
115 | memset(info, 0, sizeof *info); | |
116 | info->control = intf; | |
117 | while (len > 3) { | |
118 | if (buf [1] != USB_DT_CS_INTERFACE) | |
119 | goto next_desc; | |
120 | ||
121 | /* use bDescriptorSubType to identify the CDC descriptors. | |
122 | * We expect devices with CDC header and union descriptors. | |
123 | * For CDC Ethernet we need the ethernet descriptor. | |
124 | * For RNDIS, ignore two (pointless) CDC modem descriptors | |
125 | * in favor of a complicated OID-based RPC scheme doing what | |
126 | * CDC Ethernet achieves with a simple descriptor. | |
127 | */ | |
128 | switch (buf [2]) { | |
129 | case USB_CDC_HEADER_TYPE: | |
130 | if (info->header) { | |
131 | dev_dbg(&intf->dev, "extra CDC header\n"); | |
132 | goto bad_desc; | |
133 | } | |
134 | info->header = (void *) buf; | |
135 | if (info->header->bLength != sizeof *info->header) { | |
136 | dev_dbg(&intf->dev, "CDC header len %u\n", | |
137 | info->header->bLength); | |
138 | goto bad_desc; | |
139 | } | |
140 | break; | |
ad55d71a OAVR |
141 | case USB_CDC_ACM_TYPE: |
142 | /* paranoia: disambiguate a "real" vendor-specific | |
143 | * modem interface from an RNDIS non-modem. | |
144 | */ | |
145 | if (rndis) { | |
afaee82c | 146 | struct usb_cdc_acm_descriptor *acm; |
ad55d71a | 147 | |
afaee82c DB |
148 | acm = (void *) buf; |
149 | if (acm->bmCapabilities) { | |
ad55d71a OAVR |
150 | dev_dbg(&intf->dev, |
151 | "ACM capabilities %02x, " | |
152 | "not really RNDIS?\n", | |
afaee82c | 153 | acm->bmCapabilities); |
ad55d71a OAVR |
154 | goto bad_desc; |
155 | } | |
156 | } | |
157 | break; | |
4324fd49 DB |
158 | case USB_CDC_UNION_TYPE: |
159 | if (info->u) { | |
160 | dev_dbg(&intf->dev, "extra CDC union\n"); | |
161 | goto bad_desc; | |
162 | } | |
163 | info->u = (void *) buf; | |
164 | if (info->u->bLength != sizeof *info->u) { | |
165 | dev_dbg(&intf->dev, "CDC union len %u\n", | |
166 | info->u->bLength); | |
167 | goto bad_desc; | |
168 | } | |
169 | ||
170 | /* we need a master/control interface (what we're | |
171 | * probed with) and a slave/data interface; union | |
172 | * descriptors sort this all out. | |
173 | */ | |
174 | info->control = usb_ifnum_to_if(dev->udev, | |
175 | info->u->bMasterInterface0); | |
176 | info->data = usb_ifnum_to_if(dev->udev, | |
177 | info->u->bSlaveInterface0); | |
178 | if (!info->control || !info->data) { | |
179 | dev_dbg(&intf->dev, | |
180 | "master #%u/%p slave #%u/%p\n", | |
181 | info->u->bMasterInterface0, | |
182 | info->control, | |
183 | info->u->bSlaveInterface0, | |
184 | info->data); | |
185 | goto bad_desc; | |
186 | } | |
187 | if (info->control != intf) { | |
188 | dev_dbg(&intf->dev, "bogus CDC Union\n"); | |
189 | /* Ambit USB Cable Modem (and maybe others) | |
190 | * interchanges master and slave interface. | |
191 | */ | |
192 | if (info->data == intf) { | |
193 | info->data = info->control; | |
194 | info->control = intf; | |
195 | } else | |
196 | goto bad_desc; | |
197 | } | |
198 | ||
199 | /* a data interface altsetting does the real i/o */ | |
200 | d = &info->data->cur_altsetting->desc; | |
201 | if (d->bInterfaceClass != USB_CLASS_CDC_DATA) { | |
202 | dev_dbg(&intf->dev, "slave class %u\n", | |
203 | d->bInterfaceClass); | |
204 | goto bad_desc; | |
205 | } | |
206 | break; | |
207 | case USB_CDC_ETHERNET_TYPE: | |
208 | if (info->ether) { | |
209 | dev_dbg(&intf->dev, "extra CDC ether\n"); | |
210 | goto bad_desc; | |
211 | } | |
212 | info->ether = (void *) buf; | |
213 | if (info->ether->bLength != sizeof *info->ether) { | |
214 | dev_dbg(&intf->dev, "CDC ether len %u\n", | |
215 | info->ether->bLength); | |
216 | goto bad_desc; | |
217 | } | |
218 | dev->hard_mtu = le16_to_cpu( | |
219 | info->ether->wMaxSegmentSize); | |
220 | /* because of Zaurus, we may be ignoring the host | |
221 | * side link address we were given. | |
222 | */ | |
223 | break; | |
224 | } | |
225 | next_desc: | |
226 | len -= buf [0]; /* bLength */ | |
227 | buf += buf [0]; | |
228 | } | |
229 | ||
786e3dfb BD |
230 | /* Microsoft ActiveSync based and some regular RNDIS devices lack the |
231 | * CDC descriptors, so we'll hard-wire the interfaces and not check | |
232 | * for descriptors. | |
ad55d71a | 233 | */ |
786e3dfb | 234 | if (rndis && !info->u) { |
ad55d71a OAVR |
235 | info->control = usb_ifnum_to_if(dev->udev, 0); |
236 | info->data = usb_ifnum_to_if(dev->udev, 1); | |
237 | if (!info->control || !info->data) { | |
238 | dev_dbg(&intf->dev, | |
786e3dfb | 239 | "rndis: master #0/%p slave #1/%p\n", |
ad55d71a OAVR |
240 | info->control, |
241 | info->data); | |
242 | goto bad_desc; | |
243 | } | |
244 | ||
245 | } else if (!info->header || !info->u || (!rndis && !info->ether)) { | |
4324fd49 DB |
246 | dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n", |
247 | info->header ? "" : "header ", | |
248 | info->u ? "" : "union ", | |
249 | info->ether ? "" : "ether "); | |
250 | goto bad_desc; | |
251 | } | |
252 | ||
253 | /* claim data interface and set it up ... with side effects. | |
254 | * network traffic can't flow until an altsetting is enabled. | |
255 | */ | |
256 | status = usb_driver_claim_interface(driver, info->data, dev); | |
257 | if (status < 0) | |
258 | return status; | |
259 | status = usbnet_get_endpoints(dev, info->data); | |
260 | if (status < 0) { | |
261 | /* ensure immediate exit from usbnet_disconnect */ | |
262 | usb_set_intfdata(info->data, NULL); | |
263 | usb_driver_release_interface(driver, info->data); | |
264 | return status; | |
265 | } | |
266 | ||
267 | /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */ | |
268 | dev->status = NULL; | |
269 | if (info->control->cur_altsetting->desc.bNumEndpoints == 1) { | |
270 | struct usb_endpoint_descriptor *desc; | |
271 | ||
272 | dev->status = &info->control->cur_altsetting->endpoint [0]; | |
273 | desc = &dev->status->desc; | |
b333d5bf | 274 | if (!usb_endpoint_is_int_in(desc) |
4324fd49 DB |
275 | || (le16_to_cpu(desc->wMaxPacketSize) |
276 | < sizeof(struct usb_cdc_notification)) | |
277 | || !desc->bInterval) { | |
278 | dev_dbg(&intf->dev, "bad notification endpoint\n"); | |
279 | dev->status = NULL; | |
280 | } | |
281 | } | |
282 | if (rndis && !dev->status) { | |
283 | dev_dbg(&intf->dev, "missing RNDIS status endpoint\n"); | |
284 | usb_set_intfdata(info->data, NULL); | |
285 | usb_driver_release_interface(driver, info->data); | |
286 | return -ENODEV; | |
287 | } | |
288 | return 0; | |
289 | ||
290 | bad_desc: | |
291 | dev_info(&dev->udev->dev, "bad CDC descriptors\n"); | |
292 | return -ENODEV; | |
293 | } | |
294 | EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind); | |
295 | ||
296 | void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf) | |
297 | { | |
298 | struct cdc_state *info = (void *) &dev->data; | |
299 | struct usb_driver *driver = driver_of(intf); | |
300 | ||
301 | /* disconnect master --> disconnect slave */ | |
302 | if (intf == info->control && info->data) { | |
303 | /* ensure immediate exit from usbnet_disconnect */ | |
304 | usb_set_intfdata(info->data, NULL); | |
305 | usb_driver_release_interface(driver, info->data); | |
306 | info->data = NULL; | |
307 | } | |
308 | ||
309 | /* and vice versa (just in case) */ | |
310 | else if (intf == info->data && info->control) { | |
311 | /* ensure immediate exit from usbnet_disconnect */ | |
312 | usb_set_intfdata(info->control, NULL); | |
313 | usb_driver_release_interface(driver, info->control); | |
314 | info->control = NULL; | |
315 | } | |
316 | } | |
317 | EXPORT_SYMBOL_GPL(usbnet_cdc_unbind); | |
318 | ||
4324fd49 DB |
319 | /*------------------------------------------------------------------------- |
320 | * | |
321 | * Communications Device Class, Ethernet Control model | |
322 | * | |
323 | * Takes two interfaces. The DATA interface is inactive till an altsetting | |
324 | * is selected. Configuration data includes class descriptors. There's | |
325 | * an optional status endpoint on the control interface. | |
326 | * | |
327 | * This should interop with whatever the 2.4 "CDCEther.c" driver | |
328 | * (by Brad Hards) talked with, with more functionality. | |
329 | * | |
330 | *-------------------------------------------------------------------------*/ | |
331 | ||
332 | static void dumpspeed(struct usbnet *dev, __le32 *speeds) | |
333 | { | |
334 | if (netif_msg_timer(dev)) | |
335 | devinfo(dev, "link speeds: %u kbps up, %u kbps down", | |
336 | __le32_to_cpu(speeds[0]) / 1000, | |
337 | __le32_to_cpu(speeds[1]) / 1000); | |
338 | } | |
339 | ||
340 | static void cdc_status(struct usbnet *dev, struct urb *urb) | |
341 | { | |
342 | struct usb_cdc_notification *event; | |
343 | ||
344 | if (urb->actual_length < sizeof *event) | |
345 | return; | |
346 | ||
347 | /* SPEED_CHANGE can get split into two 8-byte packets */ | |
348 | if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) { | |
349 | dumpspeed(dev, (__le32 *) urb->transfer_buffer); | |
350 | return; | |
351 | } | |
352 | ||
353 | event = urb->transfer_buffer; | |
354 | switch (event->bNotificationType) { | |
355 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: | |
356 | if (netif_msg_timer(dev)) | |
357 | devdbg(dev, "CDC: carrier %s", | |
358 | event->wValue ? "on" : "off"); | |
359 | if (event->wValue) | |
360 | netif_carrier_on(dev->net); | |
361 | else | |
362 | netif_carrier_off(dev->net); | |
363 | break; | |
364 | case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */ | |
365 | if (netif_msg_timer(dev)) | |
366 | devdbg(dev, "CDC: speed change (len %d)", | |
367 | urb->actual_length); | |
368 | if (urb->actual_length != (sizeof *event + 8)) | |
369 | set_bit(EVENT_STS_SPLIT, &dev->flags); | |
370 | else | |
371 | dumpspeed(dev, (__le32 *) &event[1]); | |
372 | break; | |
373 | /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS), | |
374 | * but there are no standard formats for the response data. | |
375 | */ | |
376 | default: | |
377 | deverr(dev, "CDC: unexpected notification %02x!", | |
378 | event->bNotificationType); | |
379 | break; | |
380 | } | |
381 | } | |
382 | ||
383 | static u8 nibble(unsigned char c) | |
384 | { | |
385 | if (likely(isdigit(c))) | |
386 | return c - '0'; | |
387 | c = toupper(c); | |
388 | if (likely(isxdigit(c))) | |
389 | return 10 + c - 'A'; | |
390 | return 0; | |
391 | } | |
392 | ||
393 | static inline int | |
394 | get_ethernet_addr(struct usbnet *dev, struct usb_cdc_ether_desc *e) | |
395 | { | |
396 | int tmp, i; | |
397 | unsigned char buf [13]; | |
398 | ||
399 | tmp = usb_string(dev->udev, e->iMACAddress, buf, sizeof buf); | |
400 | if (tmp != 12) { | |
401 | dev_dbg(&dev->udev->dev, | |
402 | "bad MAC string %d fetch, %d\n", e->iMACAddress, tmp); | |
403 | if (tmp >= 0) | |
404 | tmp = -EINVAL; | |
405 | return tmp; | |
406 | } | |
407 | for (i = tmp = 0; i < 6; i++, tmp += 2) | |
408 | dev->net->dev_addr [i] = | |
409 | (nibble(buf [tmp]) << 4) + nibble(buf [tmp + 1]); | |
410 | return 0; | |
411 | } | |
412 | ||
413 | static int cdc_bind(struct usbnet *dev, struct usb_interface *intf) | |
414 | { | |
415 | int status; | |
416 | struct cdc_state *info = (void *) &dev->data; | |
417 | ||
418 | status = usbnet_generic_cdc_bind(dev, intf); | |
419 | if (status < 0) | |
420 | return status; | |
421 | ||
422 | status = get_ethernet_addr(dev, info->ether); | |
423 | if (status < 0) { | |
424 | usb_set_intfdata(info->data, NULL); | |
425 | usb_driver_release_interface(driver_of(intf), info->data); | |
426 | return status; | |
427 | } | |
428 | ||
429 | /* FIXME cdc-ether has some multicast code too, though it complains | |
430 | * in routine cases. info->ether describes the multicast support. | |
431 | * Implement that here, manipulating the cdc filter as needed. | |
432 | */ | |
433 | return 0; | |
434 | } | |
435 | ||
436 | static const struct driver_info cdc_info = { | |
437 | .description = "CDC Ethernet Device", | |
438 | .flags = FLAG_ETHER, | |
439 | // .check_connect = cdc_check_connect, | |
440 | .bind = cdc_bind, | |
441 | .unbind = usbnet_cdc_unbind, | |
442 | .status = cdc_status, | |
443 | }; | |
444 | ||
445 | /*-------------------------------------------------------------------------*/ | |
446 | ||
447 | ||
448 | static const struct usb_device_id products [] = { | |
449 | /* | |
450 | * BLACKLIST !! | |
451 | * | |
452 | * First blacklist any products that are egregiously nonconformant | |
453 | * with the CDC Ethernet specs. Minor braindamage we cope with; when | |
454 | * they're not even trying, needing a separate driver is only the first | |
455 | * of the differences to show up. | |
456 | */ | |
457 | ||
458 | #define ZAURUS_MASTER_INTERFACE \ | |
459 | .bInterfaceClass = USB_CLASS_COMM, \ | |
460 | .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \ | |
461 | .bInterfaceProtocol = USB_CDC_PROTO_NONE | |
462 | ||
463 | /* SA-1100 based Sharp Zaurus ("collie"), or compatible; | |
464 | * wire-incompatible with true CDC Ethernet implementations. | |
465 | * (And, it seems, needlessly so...) | |
466 | */ | |
467 | { | |
468 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
469 | | USB_DEVICE_ID_MATCH_DEVICE, | |
470 | .idVendor = 0x04DD, | |
471 | .idProduct = 0x8004, | |
472 | ZAURUS_MASTER_INTERFACE, | |
473 | .driver_info = 0, | |
474 | }, | |
475 | ||
476 | /* PXA-25x based Sharp Zaurii. Note that it seems some of these | |
477 | * (later models especially) may have shipped only with firmware | |
478 | * advertising false "CDC MDLM" compatibility ... but we're not | |
479 | * clear which models did that, so for now let's assume the worst. | |
480 | */ | |
481 | { | |
482 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
483 | | USB_DEVICE_ID_MATCH_DEVICE, | |
484 | .idVendor = 0x04DD, | |
485 | .idProduct = 0x8005, /* A-300 */ | |
486 | ZAURUS_MASTER_INTERFACE, | |
487 | .driver_info = 0, | |
488 | }, { | |
489 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
490 | | USB_DEVICE_ID_MATCH_DEVICE, | |
491 | .idVendor = 0x04DD, | |
492 | .idProduct = 0x8006, /* B-500/SL-5600 */ | |
493 | ZAURUS_MASTER_INTERFACE, | |
494 | .driver_info = 0, | |
495 | }, { | |
496 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
497 | | USB_DEVICE_ID_MATCH_DEVICE, | |
498 | .idVendor = 0x04DD, | |
499 | .idProduct = 0x8007, /* C-700 */ | |
500 | ZAURUS_MASTER_INTERFACE, | |
501 | .driver_info = 0, | |
502 | }, { | |
503 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
504 | | USB_DEVICE_ID_MATCH_DEVICE, | |
505 | .idVendor = 0x04DD, | |
506 | .idProduct = 0x9031, /* C-750 C-760 */ | |
507 | ZAURUS_MASTER_INTERFACE, | |
508 | .driver_info = 0, | |
509 | }, { | |
510 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
511 | | USB_DEVICE_ID_MATCH_DEVICE, | |
512 | .idVendor = 0x04DD, | |
513 | .idProduct = 0x9032, /* SL-6000 */ | |
514 | ZAURUS_MASTER_INTERFACE, | |
515 | .driver_info = 0, | |
516 | }, { | |
517 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
518 | | USB_DEVICE_ID_MATCH_DEVICE, | |
519 | .idVendor = 0x04DD, | |
520 | /* reported with some C860 units */ | |
521 | .idProduct = 0x9050, /* C-860 */ | |
522 | ZAURUS_MASTER_INTERFACE, | |
523 | .driver_info = 0, | |
524 | }, | |
525 | ||
efcaa205 DB |
526 | /* Olympus has some models with a Zaurus-compatible option. |
527 | * R-1000 uses a FreeScale i.MXL cpu (ARMv4T) | |
528 | */ | |
529 | { | |
530 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
531 | | USB_DEVICE_ID_MATCH_DEVICE, | |
532 | .idVendor = 0x07B4, | |
533 | .idProduct = 0x0F02, /* R-1000 */ | |
534 | ZAURUS_MASTER_INTERFACE, | |
535 | .driver_info = 0, | |
536 | }, | |
537 | ||
4324fd49 DB |
538 | /* |
539 | * WHITELIST!!! | |
540 | * | |
541 | * CDC Ether uses two interfaces, not necessarily consecutive. | |
542 | * We match the main interface, ignoring the optional device | |
543 | * class so we could handle devices that aren't exclusively | |
544 | * CDC ether. | |
545 | * | |
546 | * NOTE: this match must come AFTER entries blacklisting devices | |
547 | * because of bugs/quirks in a given product (like Zaurus, above). | |
548 | */ | |
549 | { | |
550 | USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET, | |
551 | USB_CDC_PROTO_NONE), | |
552 | .driver_info = (unsigned long) &cdc_info, | |
553 | }, | |
554 | { }, // END | |
555 | }; | |
556 | MODULE_DEVICE_TABLE(usb, products); | |
557 | ||
558 | static struct usb_driver cdc_driver = { | |
4324fd49 DB |
559 | .name = "cdc_ether", |
560 | .id_table = products, | |
561 | .probe = usbnet_probe, | |
562 | .disconnect = usbnet_disconnect, | |
563 | .suspend = usbnet_suspend, | |
564 | .resume = usbnet_resume, | |
565 | }; | |
566 | ||
567 | ||
568 | static int __init cdc_init(void) | |
569 | { | |
f8ac232a | 570 | BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) |
4324fd49 DB |
571 | < sizeof(struct cdc_state))); |
572 | ||
573 | return usb_register(&cdc_driver); | |
574 | } | |
575 | module_init(cdc_init); | |
576 | ||
577 | static void __exit cdc_exit(void) | |
578 | { | |
579 | usb_deregister(&cdc_driver); | |
580 | } | |
581 | module_exit(cdc_exit); | |
582 | ||
583 | MODULE_AUTHOR("David Brownell"); | |
584 | MODULE_DESCRIPTION("USB CDC Ethernet devices"); | |
585 | MODULE_LICENSE("GPL"); |