1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * CDC Ethernet based networking peripherals
4 * Copyright (C) 2003-2005 by David Brownell
5 * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
6 */
7
8 // #define DEBUG // error path messages, extra info
9 // #define VERBOSE // more; success messages
10
11 #include <linux/module.h>
12 #include <linux/netdevice.h>
13 #include <linux/etherdevice.h>
14 #include <linux/ethtool.h>
15 #include <linux/workqueue.h>
16 #include <linux/mii.h>
17 #include <linux/usb.h>
18 #include <linux/usb/cdc.h>
19 #include <linux/usb/usbnet.h>
20
21
22 #if IS_ENABLED(CONFIG_USB_NET_RNDIS_HOST)
23
is_rndis(struct usb_interface_descriptor * desc)24 static int is_rndis(struct usb_interface_descriptor *desc)
25 {
26 return (desc->bInterfaceClass == USB_CLASS_COMM &&
27 desc->bInterfaceSubClass == 2 &&
28 desc->bInterfaceProtocol == 0xff);
29 }
30
is_activesync(struct usb_interface_descriptor * desc)31 static int is_activesync(struct usb_interface_descriptor *desc)
32 {
33 return (desc->bInterfaceClass == USB_CLASS_MISC &&
34 desc->bInterfaceSubClass == 1 &&
35 desc->bInterfaceProtocol == 1);
36 }
37
is_wireless_rndis(struct usb_interface_descriptor * desc)38 static int is_wireless_rndis(struct usb_interface_descriptor *desc)
39 {
40 return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER &&
41 desc->bInterfaceSubClass == 1 &&
42 desc->bInterfaceProtocol == 3);
43 }
44
is_novatel_rndis(struct usb_interface_descriptor * desc)45 static int is_novatel_rndis(struct usb_interface_descriptor *desc)
46 {
47 return (desc->bInterfaceClass == USB_CLASS_MISC &&
48 desc->bInterfaceSubClass == 4 &&
49 desc->bInterfaceProtocol == 1);
50 }
51
52 #else
53
54 #define is_rndis(desc) 0
55 #define is_activesync(desc) 0
56 #define is_wireless_rndis(desc) 0
57 #define is_novatel_rndis(desc) 0
58
59 #endif
60
61 static const u8 mbm_guid[16] = {
62 0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01,
63 0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,
64 };
65
usbnet_cdc_update_filter(struct usbnet * dev)66 void usbnet_cdc_update_filter(struct usbnet *dev)
67 {
68 struct net_device *net = dev->net;
69
70 u16 cdc_filter = USB_CDC_PACKET_TYPE_DIRECTED
71 | USB_CDC_PACKET_TYPE_BROADCAST;
72
73 /* filtering on the device is an optional feature and not worth
74 * the hassle so we just roughly care about snooping and if any
75 * multicast is requested, we take every multicast
76 */
77 if (net->flags & IFF_PROMISC)
78 cdc_filter |= USB_CDC_PACKET_TYPE_PROMISCUOUS;
79 if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI))
80 cdc_filter |= USB_CDC_PACKET_TYPE_ALL_MULTICAST;
81
82 usb_control_msg(dev->udev,
83 usb_sndctrlpipe(dev->udev, 0),
84 USB_CDC_SET_ETHERNET_PACKET_FILTER,
85 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
86 cdc_filter,
87 dev->intf->cur_altsetting->desc.bInterfaceNumber,
88 NULL,
89 0,
90 USB_CTRL_SET_TIMEOUT
91 );
92 }
93 EXPORT_SYMBOL_GPL(usbnet_cdc_update_filter);
94
95 /* We need to override usbnet_*_link_ksettings in bind() */
96 static const struct ethtool_ops cdc_ether_ethtool_ops = {
97 .get_link = usbnet_get_link,
98 .nway_reset = usbnet_nway_reset,
99 .get_drvinfo = usbnet_get_drvinfo,
100 .get_msglevel = usbnet_get_msglevel,
101 .set_msglevel = usbnet_set_msglevel,
102 .get_ts_info = ethtool_op_get_ts_info,
103 .get_link_ksettings = usbnet_get_link_ksettings_internal,
104 .set_link_ksettings = NULL,
105 };
106
107 /* probes control interface, claims data interface, collects the bulk
108 * endpoints, activates data interface (if needed), maybe sets MTU.
109 * all pure cdc, except for certain firmware workarounds, and knowing
110 * that rndis uses one different rule.
111 */
usbnet_generic_cdc_bind(struct usbnet * dev,struct usb_interface * intf)112 int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
113 {
114 u8 *buf = intf->cur_altsetting->extra;
115 int len = intf->cur_altsetting->extralen;
116 struct usb_interface_descriptor *d;
117 struct cdc_state *info = (void *) &dev->data;
118 int status;
119 int rndis;
120 bool android_rndis_quirk = false;
121 struct usb_driver *driver = driver_of(intf);
122 struct usb_cdc_parsed_header header;
123
124 if (sizeof(dev->data) < sizeof(*info))
125 return -EDOM;
126
127 /* expect strict spec conformance for the descriptors, but
128 * cope with firmware which stores them in the wrong place
129 */
130 if (len == 0 && dev->udev->actconfig->extralen) {
131 /* Motorola SB4100 (and others: Brad Hards says it's
132 * from a Broadcom design) put CDC descriptors here
133 */
134 buf = dev->udev->actconfig->extra;
135 len = dev->udev->actconfig->extralen;
136 dev_dbg(&intf->dev, "CDC descriptors on config\n");
137 }
138
139 /* Maybe CDC descriptors are after the endpoint? This bug has
140 * been seen on some 2Wire Inc RNDIS-ish products.
141 */
142 if (len == 0) {
143 struct usb_host_endpoint *hep;
144
145 hep = intf->cur_altsetting->endpoint;
146 if (hep) {
147 buf = hep->extra;
148 len = hep->extralen;
149 }
150 if (len)
151 dev_dbg(&intf->dev,
152 "CDC descriptors on endpoint\n");
153 }
154
155 /* this assumes that if there's a non-RNDIS vendor variant
156 * of cdc-acm, it'll fail RNDIS requests cleanly.
157 */
158 rndis = (is_rndis(&intf->cur_altsetting->desc) ||
159 is_activesync(&intf->cur_altsetting->desc) ||
160 is_wireless_rndis(&intf->cur_altsetting->desc) ||
161 is_novatel_rndis(&intf->cur_altsetting->desc));
162
163 memset(info, 0, sizeof(*info));
164 info->control = intf;
165
166 cdc_parse_cdc_header(&header, intf, buf, len);
167
168 info->u = header.usb_cdc_union_desc;
169 info->header = header.usb_cdc_header_desc;
170 info->ether = header.usb_cdc_ether_desc;
171 if (!info->u) {
172 if (rndis)
173 goto skip;
174 else /* in that case a quirk is mandatory */
175 goto bad_desc;
176 }
177 /* we need a master/control interface (what we're
178 * probed with) and a slave/data interface; union
179 * descriptors sort this all out.
180 */
181 info->control = usb_ifnum_to_if(dev->udev, info->u->bMasterInterface0);
182 info->data = usb_ifnum_to_if(dev->udev, info->u->bSlaveInterface0);
183 if (!info->control || !info->data) {
184 dev_dbg(&intf->dev,
185 "master #%u/%p slave #%u/%p\n",
186 info->u->bMasterInterface0,
187 info->control,
188 info->u->bSlaveInterface0,
189 info->data);
190 /* fall back to hard-wiring for RNDIS */
191 if (rndis) {
192 android_rndis_quirk = true;
193 goto skip;
194 }
195 goto bad_desc;
196 }
197 if (info->control != intf) {
198 dev_dbg(&intf->dev, "bogus CDC Union\n");
199 /* Ambit USB Cable Modem (and maybe others)
200 * interchanges master and slave interface.
201 */
202 if (info->data == intf) {
203 info->data = info->control;
204 info->control = intf;
205 } else
206 goto bad_desc;
207 }
208
209 /* some devices merge these - skip class check */
210 if (info->control == info->data)
211 goto skip;
212
213 /* a data interface altsetting does the real i/o */
214 d = &info->data->cur_altsetting->desc;
215 if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
216 dev_dbg(&intf->dev, "slave class %u\n", d->bInterfaceClass);
217 goto bad_desc;
218 }
219 skip:
220 /* Communication class functions with bmCapabilities are not
221 * RNDIS. But some Wireless class RNDIS functions use
222 * bmCapabilities for their own purpose. The failsafe is
223 * therefore applied only to Communication class RNDIS
224 * functions. The rndis test is redundant, but a cheap
225 * optimization.
226 */
227 if (rndis && is_rndis(&intf->cur_altsetting->desc) &&
228 header.usb_cdc_acm_descriptor &&
229 header.usb_cdc_acm_descriptor->bmCapabilities) {
230 dev_dbg(&intf->dev,
231 "ACM capabilities %02x, not really RNDIS?\n",
232 header.usb_cdc_acm_descriptor->bmCapabilities);
233 goto bad_desc;
234 }
235
236 if (header.usb_cdc_ether_desc && info->ether->wMaxSegmentSize) {
237 dev->hard_mtu = le16_to_cpu(info->ether->wMaxSegmentSize);
238 /* because of Zaurus, we may be ignoring the host
239 * side link address we were given.
240 */
241 }
242
243 if (header.usb_cdc_mdlm_desc &&
244 memcmp(header.usb_cdc_mdlm_desc->bGUID, mbm_guid, 16)) {
245 dev_dbg(&intf->dev, "GUID doesn't match\n");
246 goto bad_desc;
247 }
248
249 if (header.usb_cdc_mdlm_detail_desc &&
250 header.usb_cdc_mdlm_detail_desc->bLength <
251 (sizeof(struct usb_cdc_mdlm_detail_desc) + 1)) {
252 dev_dbg(&intf->dev, "Descriptor too short\n");
253 goto bad_desc;
254 }
255
256
257
258 /* Microsoft ActiveSync based and some regular RNDIS devices lack the
259 * CDC descriptors, so we'll hard-wire the interfaces and not check
260 * for descriptors.
261 *
262 * Some Android RNDIS devices have a CDC Union descriptor pointing
263 * to non-existing interfaces. Ignore that and attempt the same
264 * hard-wired 0 and 1 interfaces.
265 */
266 if (rndis && (!info->u || android_rndis_quirk)) {
267 info->control = usb_ifnum_to_if(dev->udev, 0);
268 info->data = usb_ifnum_to_if(dev->udev, 1);
269 if (!info->control || !info->data || info->control != intf) {
270 dev_dbg(&intf->dev,
271 "rndis: master #0/%p slave #1/%p\n",
272 info->control,
273 info->data);
274 goto bad_desc;
275 }
276
277 } else if (!info->header || (!rndis && !info->ether)) {
278 dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
279 info->header ? "" : "header ",
280 info->u ? "" : "union ",
281 info->ether ? "" : "ether ");
282 goto bad_desc;
283 }
284
285 /* claim data interface and set it up ... with side effects.
286 * network traffic can't flow until an altsetting is enabled.
287 */
288 if (info->data != info->control) {
289 status = usb_driver_claim_interface(driver, info->data, dev);
290 if (status < 0)
291 return status;
292 }
293 status = usbnet_get_endpoints(dev, info->data);
294 if (status < 0) {
295 /* ensure immediate exit from usbnet_disconnect */
296 usb_set_intfdata(info->data, NULL);
297 if (info->data != info->control)
298 usb_driver_release_interface(driver, info->data);
299 return status;
300 }
301
302 /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
303 if (info->data != info->control)
304 dev->status = NULL;
305 if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
306 struct usb_endpoint_descriptor *desc;
307
308 dev->status = &info->control->cur_altsetting->endpoint[0];
309 desc = &dev->status->desc;
310 if (!usb_endpoint_is_int_in(desc) ||
311 (le16_to_cpu(desc->wMaxPacketSize)
312 < sizeof(struct usb_cdc_notification)) ||
313 !desc->bInterval) {
314 dev_dbg(&intf->dev, "bad notification endpoint\n");
315 dev->status = NULL;
316 }
317 }
318 if (rndis && !dev->status) {
319 dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
320 usb_set_intfdata(info->data, NULL);
321 usb_driver_release_interface(driver, info->data);
322 return -ENODEV;
323 }
324
325 /* override ethtool_ops */
326 dev->net->ethtool_ops = &cdc_ether_ethtool_ops;
327
328 return 0;
329
330 bad_desc:
331 dev_info(&dev->udev->dev, "bad CDC descriptors\n");
332 return -ENODEV;
333 }
334 EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
335
336
337 /* like usbnet_generic_cdc_bind() but handles filter initialization
338 * correctly
339 */
usbnet_ether_cdc_bind(struct usbnet * dev,struct usb_interface * intf)340 int usbnet_ether_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
341 {
342 int rv;
343
344 rv = usbnet_generic_cdc_bind(dev, intf);
345 if (rv < 0)
346 goto bail_out;
347
348 /* Some devices don't initialise properly. In particular
349 * the packet filter is not reset. There are devices that
350 * don't do reset all the way. So the packet filter should
351 * be set to a sane initial value.
352 */
353 usbnet_cdc_update_filter(dev);
354
355 bail_out:
356 return rv;
357 }
358 EXPORT_SYMBOL_GPL(usbnet_ether_cdc_bind);
359
usbnet_cdc_unbind(struct usbnet * dev,struct usb_interface * intf)360 void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
361 {
362 struct cdc_state *info = (void *) &dev->data;
363 struct usb_driver *driver = driver_of(intf);
364
365 /* combined interface - nothing to do */
366 if (info->data == info->control)
367 return;
368
369 /* disconnect master --> disconnect slave */
370 if (intf == info->control && info->data) {
371 /* ensure immediate exit from usbnet_disconnect */
372 usb_set_intfdata(info->data, NULL);
373 usb_driver_release_interface(driver, info->data);
374 info->data = NULL;
375 }
376
377 /* and vice versa (just in case) */
378 else if (intf == info->data && info->control) {
379 /* ensure immediate exit from usbnet_disconnect */
380 usb_set_intfdata(info->control, NULL);
381 usb_driver_release_interface(driver, info->control);
382 info->control = NULL;
383 }
384 }
385 EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
386
387 /* Communications Device Class, Ethernet Control model
388 *
389 * Takes two interfaces. The DATA interface is inactive till an altsetting
390 * is selected. Configuration data includes class descriptors. There's
391 * an optional status endpoint on the control interface.
392 *
393 * This should interop with whatever the 2.4 "CDCEther.c" driver
394 * (by Brad Hards) talked with, with more functionality.
395 */
396
speed_change(struct usbnet * dev,__le32 * speeds)397 static void speed_change(struct usbnet *dev, __le32 *speeds)
398 {
399 dev->tx_speed = __le32_to_cpu(speeds[0]);
400 dev->rx_speed = __le32_to_cpu(speeds[1]);
401 }
402
usbnet_cdc_status(struct usbnet * dev,struct urb * urb)403 void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
404 {
405 struct usb_cdc_notification *event;
406
407 if (urb->actual_length < sizeof(*event))
408 return;
409
410 /* SPEED_CHANGE can get split into two 8-byte packets */
411 if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
412 speed_change(dev, (__le32 *) urb->transfer_buffer);
413 return;
414 }
415
416 event = urb->transfer_buffer;
417 switch (event->bNotificationType) {
418 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
419 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
420 event->wValue ? "on" : "off");
421 usbnet_link_change(dev, !!event->wValue, 0);
422 break;
423 case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */
424 netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
425 urb->actual_length);
426 if (urb->actual_length != (sizeof(*event) + 8))
427 set_bit(EVENT_STS_SPLIT, &dev->flags);
428 else
429 speed_change(dev, (__le32 *) &event[1]);
430 break;
431 /* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
432 * but there are no standard formats for the response data.
433 */
434 default:
435 netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
436 event->bNotificationType);
437 break;
438 }
439 }
440 EXPORT_SYMBOL_GPL(usbnet_cdc_status);
441
usbnet_cdc_bind(struct usbnet * dev,struct usb_interface * intf)442 int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
443 {
444 int status;
445 struct cdc_state *info = (void *) &dev->data;
446
447 BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
448 < sizeof(struct cdc_state)));
449
450 status = usbnet_ether_cdc_bind(dev, intf);
451 if (status < 0)
452 return status;
453
454 status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
455 if (status < 0) {
456 usb_set_intfdata(info->data, NULL);
457 usb_driver_release_interface(driver_of(intf), info->data);
458 return status;
459 }
460
461 return 0;
462 }
463 EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
464
usbnet_cdc_zte_bind(struct usbnet * dev,struct usb_interface * intf)465 static int usbnet_cdc_zte_bind(struct usbnet *dev, struct usb_interface *intf)
466 {
467 int status = usbnet_cdc_bind(dev, intf);
468
469 if (!status && (dev->net->dev_addr[0] & 0x02))
470 eth_hw_addr_random(dev->net);
471
472 return status;
473 }
474
475 /* Make sure packets have correct destination MAC address
476 *
477 * A firmware bug observed on some devices (ZTE MF823/831/910) is that the
478 * device sends packets with a static, bogus, random MAC address (event if
479 * device MAC address has been updated). Always set MAC address to that of the
480 * device.
481 */
usbnet_cdc_zte_rx_fixup(struct usbnet * dev,struct sk_buff * skb)482 static int usbnet_cdc_zte_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
483 {
484 if (skb->len < ETH_HLEN || !(skb->data[0] & 0x02))
485 return 1;
486
487 skb_reset_mac_header(skb);
488 ether_addr_copy(eth_hdr(skb)->h_dest, dev->net->dev_addr);
489
490 return 1;
491 }
492
493 /* Ensure correct link state
494 *
495 * Some devices (ZTE MF823/831/910) export two carrier on notifications when
496 * connected. This causes the link state to be incorrect. Work around this by
497 * always setting the state to off, then on.
498 */
usbnet_cdc_zte_status(struct usbnet * dev,struct urb * urb)499 static void usbnet_cdc_zte_status(struct usbnet *dev, struct urb *urb)
500 {
501 struct usb_cdc_notification *event;
502
503 if (urb->actual_length < sizeof(*event))
504 return;
505
506 event = urb->transfer_buffer;
507
508 if (event->bNotificationType != USB_CDC_NOTIFY_NETWORK_CONNECTION) {
509 usbnet_cdc_status(dev, urb);
510 return;
511 }
512
513 netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
514 event->wValue ? "on" : "off");
515
516 if (event->wValue &&
517 netif_carrier_ok(dev->net))
518 netif_carrier_off(dev->net);
519
520 usbnet_link_change(dev, !!event->wValue, 0);
521 }
522
523 static const struct driver_info cdc_info = {
524 .description = "CDC Ethernet Device",
525 .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
526 .bind = usbnet_cdc_bind,
527 .unbind = usbnet_cdc_unbind,
528 .status = usbnet_cdc_status,
529 .set_rx_mode = usbnet_cdc_update_filter,
530 .manage_power = usbnet_manage_power,
531 };
532
533 static const struct driver_info zte_cdc_info = {
534 .description = "ZTE CDC Ethernet Device",
535 .flags = FLAG_ETHER | FLAG_POINTTOPOINT,
536 .bind = usbnet_cdc_zte_bind,
537 .unbind = usbnet_cdc_unbind,
538 .status = usbnet_cdc_zte_status,
539 .set_rx_mode = usbnet_cdc_update_filter,
540 .manage_power = usbnet_manage_power,
541 .rx_fixup = usbnet_cdc_zte_rx_fixup,
542 };
543
544 static const struct driver_info wwan_info = {
545 .description = "Mobile Broadband Network Device",
546 .flags = FLAG_WWAN,
547 .bind = usbnet_cdc_bind,
548 .unbind = usbnet_cdc_unbind,
549 .status = usbnet_cdc_status,
550 .set_rx_mode = usbnet_cdc_update_filter,
551 .manage_power = usbnet_manage_power,
552 };
553
554 /*-------------------------------------------------------------------------*/
555
556 #define HUAWEI_VENDOR_ID 0x12D1
557 #define NOVATEL_VENDOR_ID 0x1410
558 #define ZTE_VENDOR_ID 0x19D2
559 #define DELL_VENDOR_ID 0x413C
560 #define REALTEK_VENDOR_ID 0x0bda
561 #define SAMSUNG_VENDOR_ID 0x04e8
562 #define LENOVO_VENDOR_ID 0x17ef
563 #define LINKSYS_VENDOR_ID 0x13b1
564 #define NVIDIA_VENDOR_ID 0x0955
565 #define HP_VENDOR_ID 0x03f0
566 #define MICROSOFT_VENDOR_ID 0x045e
567 #define UBLOX_VENDOR_ID 0x1546
568 #define TPLINK_VENDOR_ID 0x2357
569 #define AQUANTIA_VENDOR_ID 0x2eca
570 #define ASIX_VENDOR_ID 0x0b95
571
572 static const struct usb_device_id products[] = {
573 /* BLACKLIST !!
574 *
575 * First blacklist any products that are egregiously nonconformant
576 * with the CDC Ethernet specs. Minor braindamage we cope with; when
577 * they're not even trying, needing a separate driver is only the first
578 * of the differences to show up.
579 */
580
581 #define ZAURUS_MASTER_INTERFACE \
582 .bInterfaceClass = USB_CLASS_COMM, \
583 .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
584 .bInterfaceProtocol = USB_CDC_PROTO_NONE
585
586 #define ZAURUS_FAKE_INTERFACE \
587 .bInterfaceClass = USB_CLASS_COMM, \
588 .bInterfaceSubClass = USB_CDC_SUBCLASS_MDLM, \
589 .bInterfaceProtocol = USB_CDC_PROTO_NONE
590
591 /* SA-1100 based Sharp Zaurus ("collie"), or compatible;
592 * wire-incompatible with true CDC Ethernet implementations.
593 * (And, it seems, needlessly so...)
594 */
595 {
596 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
597 | USB_DEVICE_ID_MATCH_DEVICE,
598 .idVendor = 0x04DD,
599 .idProduct = 0x8004,
600 ZAURUS_MASTER_INTERFACE,
601 .driver_info = 0,
602 },
603
604 /* PXA-25x based Sharp Zaurii. Note that it seems some of these
605 * (later models especially) may have shipped only with firmware
606 * advertising false "CDC MDLM" compatibility ... but we're not
607 * clear which models did that, so for now let's assume the worst.
608 */
609 {
610 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
611 | USB_DEVICE_ID_MATCH_DEVICE,
612 .idVendor = 0x04DD,
613 .idProduct = 0x8005, /* A-300 */
614 ZAURUS_MASTER_INTERFACE,
615 .driver_info = 0,
616 }, {
617 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
618 | USB_DEVICE_ID_MATCH_DEVICE,
619 .idVendor = 0x04DD,
620 .idProduct = 0x8005, /* A-300 */
621 ZAURUS_FAKE_INTERFACE,
622 .driver_info = 0,
623 }, {
624 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
625 | USB_DEVICE_ID_MATCH_DEVICE,
626 .idVendor = 0x04DD,
627 .idProduct = 0x8006, /* B-500/SL-5600 */
628 ZAURUS_MASTER_INTERFACE,
629 .driver_info = 0,
630 }, {
631 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
632 | USB_DEVICE_ID_MATCH_DEVICE,
633 .idVendor = 0x04DD,
634 .idProduct = 0x8006, /* B-500/SL-5600 */
635 ZAURUS_FAKE_INTERFACE,
636 .driver_info = 0,
637 }, {
638 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
639 | USB_DEVICE_ID_MATCH_DEVICE,
640 .idVendor = 0x04DD,
641 .idProduct = 0x8007, /* C-700 */
642 ZAURUS_MASTER_INTERFACE,
643 .driver_info = 0,
644 }, {
645 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
646 | USB_DEVICE_ID_MATCH_DEVICE,
647 .idVendor = 0x04DD,
648 .idProduct = 0x8007, /* C-700 */
649 ZAURUS_FAKE_INTERFACE,
650 .driver_info = 0,
651 }, {
652 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
653 | USB_DEVICE_ID_MATCH_DEVICE,
654 .idVendor = 0x04DD,
655 .idProduct = 0x9031, /* C-750 C-760 */
656 ZAURUS_MASTER_INTERFACE,
657 .driver_info = 0,
658 }, {
659 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
660 | USB_DEVICE_ID_MATCH_DEVICE,
661 .idVendor = 0x04DD,
662 .idProduct = 0x9032, /* SL-6000 */
663 ZAURUS_MASTER_INTERFACE,
664 .driver_info = 0,
665 }, {
666 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
667 | USB_DEVICE_ID_MATCH_DEVICE,
668 .idVendor = 0x04DD,
669 .idProduct = 0x9032, /* SL-6000 */
670 ZAURUS_FAKE_INTERFACE,
671 .driver_info = 0,
672 }, {
673 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
674 | USB_DEVICE_ID_MATCH_DEVICE,
675 .idVendor = 0x04DD,
676 /* reported with some C860 units */
677 .idProduct = 0x9050, /* C-860 */
678 ZAURUS_MASTER_INTERFACE,
679 .driver_info = 0,
680 },
681
682 /* Olympus has some models with a Zaurus-compatible option.
683 * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
684 */
685 {
686 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
687 | USB_DEVICE_ID_MATCH_DEVICE,
688 .idVendor = 0x07B4,
689 .idProduct = 0x0F02, /* R-1000 */
690 ZAURUS_MASTER_INTERFACE,
691 .driver_info = 0,
692 },
693
694 /* LG Electronics VL600 wants additional headers on every frame */
695 {
696 USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
697 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
698 .driver_info = 0,
699 },
700
701 /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
702 {
703 USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
704 USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
705 .driver_info = 0,
706 },
707
708 /* Novatel USB551L and MC551 - handled by qmi_wwan */
709 {
710 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
711 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
712 .driver_info = 0,
713 },
714
715 /* Novatel E362 - handled by qmi_wwan */
716 {
717 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
718 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
719 .driver_info = 0,
720 },
721
722 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
723 {
724 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
725 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
726 .driver_info = 0,
727 },
728
729 /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
730 {
731 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
732 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
733 .driver_info = 0,
734 },
735
736 /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
737 {
738 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
739 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
740 .driver_info = 0,
741 },
742
743 /* Novatel Expedite E371 - handled by qmi_wwan */
744 {
745 USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
746 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
747 .driver_info = 0,
748 },
749
750 /* HP lt2523 (Novatel E371) - handled by qmi_wwan */
751 {
752 USB_DEVICE_AND_INTERFACE_INFO(HP_VENDOR_ID, 0x421d, USB_CLASS_COMM,
753 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
754 .driver_info = 0,
755 },
756
757 /* AnyDATA ADU960S - handled by qmi_wwan */
758 {
759 USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
760 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
761 .driver_info = 0,
762 },
763
764 /* Huawei E1820 - handled by qmi_wwan */
765 {
766 USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
767 .driver_info = 0,
768 },
769
770 /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
771 {
772 USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
773 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
774 .driver_info = 0,
775 },
776
777 /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
778 {
779 USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
780 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
781 .driver_info = 0,
782 },
783
784 /* Samsung USB Ethernet Adapters */
785 {
786 USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
787 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
788 .driver_info = 0,
789 },
790
791 #if IS_ENABLED(CONFIG_USB_RTL8152)
792 /* Linksys USB3GIGV1 Ethernet Adapter */
793 {
794 USB_DEVICE_AND_INTERFACE_INFO(LINKSYS_VENDOR_ID, 0x0041, USB_CLASS_COMM,
795 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
796 .driver_info = 0,
797 },
798 #endif
799
800 /* Lenovo ThinkPad OneLink+ Dock (based on Realtek RTL8153) */
801 {
802 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3054, USB_CLASS_COMM,
803 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
804 .driver_info = 0,
805 },
806
807 /* ThinkPad USB-C Dock (based on Realtek RTL8153) */
808 {
809 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3062, USB_CLASS_COMM,
810 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
811 .driver_info = 0,
812 },
813
814 /* ThinkPad Thunderbolt 3 Dock (based on Realtek RTL8153) */
815 {
816 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3069, USB_CLASS_COMM,
817 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
818 .driver_info = 0,
819 },
820
821 /* ThinkPad Thunderbolt 3 Dock Gen 2 (based on Realtek RTL8153) */
822 {
823 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3082, USB_CLASS_COMM,
824 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
825 .driver_info = 0,
826 },
827
828 /* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
829 {
830 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM,
831 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
832 .driver_info = 0,
833 },
834
835 /* Lenovo USB C to Ethernet Adapter (based on Realtek RTL8153) */
836 {
837 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x720c, USB_CLASS_COMM,
838 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
839 .driver_info = 0,
840 },
841
842 /* Lenovo USB-C Travel Hub (based on Realtek RTL8153) */
843 {
844 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7214, USB_CLASS_COMM,
845 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
846 .driver_info = 0,
847 },
848
849 /* Lenovo Powered USB-C Travel Hub (4X90S92381, based on Realtek RTL8153) */
850 {
851 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x721e, USB_CLASS_COMM,
852 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
853 .driver_info = 0,
854 },
855
856 /* ThinkPad USB-C Dock Gen 2 (based on Realtek RTL8153) */
857 {
858 USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0xa387, USB_CLASS_COMM,
859 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
860 .driver_info = 0,
861 },
862
863 /* NVIDIA Tegra USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
864 {
865 USB_DEVICE_AND_INTERFACE_INFO(NVIDIA_VENDOR_ID, 0x09ff, USB_CLASS_COMM,
866 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
867 .driver_info = 0,
868 },
869
870 /* Microsoft Surface 2 dock (based on Realtek RTL8152) */
871 {
872 USB_DEVICE_AND_INTERFACE_INFO(MICROSOFT_VENDOR_ID, 0x07ab, USB_CLASS_COMM,
873 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
874 .driver_info = 0,
875 },
876
877 /* Microsoft Surface Ethernet Adapter (based on Realtek RTL8153) */
878 {
879 USB_DEVICE_AND_INTERFACE_INFO(MICROSOFT_VENDOR_ID, 0x07c6, USB_CLASS_COMM,
880 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
881 .driver_info = 0,
882 },
883
884 /* Microsoft Surface Ethernet Adapter (based on Realtek RTL8153B) */
885 {
886 USB_DEVICE_AND_INTERFACE_INFO(MICROSOFT_VENDOR_ID, 0x0927, USB_CLASS_COMM,
887 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
888 .driver_info = 0,
889 },
890
891 /* TP-LINK UE300 USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */
892 {
893 USB_DEVICE_AND_INTERFACE_INFO(TPLINK_VENDOR_ID, 0x0601, USB_CLASS_COMM,
894 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
895 .driver_info = 0,
896 },
897
898 /* Aquantia AQtion USB to 5GbE Controller (based on AQC111U) */
899 {
900 USB_DEVICE_AND_INTERFACE_INFO(AQUANTIA_VENDOR_ID, 0xc101,
901 USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
902 USB_CDC_PROTO_NONE),
903 .driver_info = 0,
904 },
905
906 /* ASIX USB 3.1 Gen1 to 5G Multi-Gigabit Ethernet Adapter(based on AQC111U) */
907 {
908 USB_DEVICE_AND_INTERFACE_INFO(ASIX_VENDOR_ID, 0x2790, USB_CLASS_COMM,
909 USB_CDC_SUBCLASS_ETHERNET,
910 USB_CDC_PROTO_NONE),
911 .driver_info = 0,
912 },
913
914 /* ASIX USB 3.1 Gen1 to 2.5G Multi-Gigabit Ethernet Adapter(based on AQC112U) */
915 {
916 USB_DEVICE_AND_INTERFACE_INFO(ASIX_VENDOR_ID, 0x2791, USB_CLASS_COMM,
917 USB_CDC_SUBCLASS_ETHERNET,
918 USB_CDC_PROTO_NONE),
919 .driver_info = 0,
920 },
921
922 /* USB-C 3.1 to 5GBASE-T Ethernet Adapter (based on AQC111U) */
923 {
924 USB_DEVICE_AND_INTERFACE_INFO(0x20f4, 0xe05a, USB_CLASS_COMM,
925 USB_CDC_SUBCLASS_ETHERNET,
926 USB_CDC_PROTO_NONE),
927 .driver_info = 0,
928 },
929
930 /* QNAP QNA-UC5G1T USB to 5GbE Adapter (based on AQC111U) */
931 {
932 USB_DEVICE_AND_INTERFACE_INFO(0x1c04, 0x0015, USB_CLASS_COMM,
933 USB_CDC_SUBCLASS_ETHERNET,
934 USB_CDC_PROTO_NONE),
935 .driver_info = 0,
936 },
937
938 /* WHITELIST!!!
939 *
940 * CDC Ether uses two interfaces, not necessarily consecutive.
941 * We match the main interface, ignoring the optional device
942 * class so we could handle devices that aren't exclusively
943 * CDC ether.
944 *
945 * NOTE: this match must come AFTER entries blacklisting devices
946 * because of bugs/quirks in a given product (like Zaurus, above).
947 */
948 {
949 /* ZTE (Vodafone) K3805-Z */
950 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
951 USB_CDC_SUBCLASS_ETHERNET,
952 USB_CDC_PROTO_NONE),
953 .driver_info = (unsigned long)&wwan_info,
954 }, {
955 /* ZTE (Vodafone) K3806-Z */
956 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
957 USB_CDC_SUBCLASS_ETHERNET,
958 USB_CDC_PROTO_NONE),
959 .driver_info = (unsigned long)&wwan_info,
960 }, {
961 /* ZTE (Vodafone) K4510-Z */
962 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
963 USB_CDC_SUBCLASS_ETHERNET,
964 USB_CDC_PROTO_NONE),
965 .driver_info = (unsigned long)&wwan_info,
966 }, {
967 /* ZTE (Vodafone) K3770-Z */
968 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
969 USB_CDC_SUBCLASS_ETHERNET,
970 USB_CDC_PROTO_NONE),
971 .driver_info = (unsigned long)&wwan_info,
972 }, {
973 /* ZTE (Vodafone) K3772-Z */
974 USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
975 USB_CDC_SUBCLASS_ETHERNET,
976 USB_CDC_PROTO_NONE),
977 .driver_info = (unsigned long)&wwan_info,
978 }, {
979 /* Telit modules */
980 USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
981 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
982 .driver_info = (kernel_ulong_t) &wwan_info,
983 }, {
984 /* Dell DW5580 modules */
985 USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x81ba, USB_CLASS_COMM,
986 USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
987 .driver_info = (kernel_ulong_t)&wwan_info,
988 }, {
989 /* Huawei ME906 and ME909 */
990 USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x15c1, USB_CLASS_COMM,
991 USB_CDC_SUBCLASS_ETHERNET,
992 USB_CDC_PROTO_NONE),
993 .driver_info = (unsigned long)&wwan_info,
994 }, {
995 /* ZTE modules */
996 USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, USB_CLASS_COMM,
997 USB_CDC_SUBCLASS_ETHERNET,
998 USB_CDC_PROTO_NONE),
999 .driver_info = (unsigned long)&zte_cdc_info,
1000 }, {
1001 /* U-blox TOBY-L2 */
1002 USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1143, USB_CLASS_COMM,
1003 USB_CDC_SUBCLASS_ETHERNET,
1004 USB_CDC_PROTO_NONE),
1005 .driver_info = (unsigned long)&wwan_info,
1006 }, {
1007 /* U-blox SARA-U2 */
1008 USB_DEVICE_AND_INTERFACE_INFO(UBLOX_VENDOR_ID, 0x1104, USB_CLASS_COMM,
1009 USB_CDC_SUBCLASS_ETHERNET,
1010 USB_CDC_PROTO_NONE),
1011 .driver_info = (unsigned long)&wwan_info,
1012 }, {
1013 /* Cinterion PLS8 modem by GEMALTO */
1014 USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0061, USB_CLASS_COMM,
1015 USB_CDC_SUBCLASS_ETHERNET,
1016 USB_CDC_PROTO_NONE),
1017 .driver_info = (unsigned long)&wwan_info,
1018 }, {
1019 /* Cinterion AHS3 modem by GEMALTO */
1020 USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0055, USB_CLASS_COMM,
1021 USB_CDC_SUBCLASS_ETHERNET,
1022 USB_CDC_PROTO_NONE),
1023 .driver_info = (unsigned long)&wwan_info,
1024 }, {
1025 /* Cinterion PLS62-W modem by GEMALTO/THALES */
1026 USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x005b, USB_CLASS_COMM,
1027 USB_CDC_SUBCLASS_ETHERNET,
1028 USB_CDC_PROTO_NONE),
1029 .driver_info = (unsigned long)&wwan_info,
1030 }, {
1031 /* Cinterion PLS83/PLS63 modem by GEMALTO/THALES */
1032 USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0069, USB_CLASS_COMM,
1033 USB_CDC_SUBCLASS_ETHERNET,
1034 USB_CDC_PROTO_NONE),
1035 .driver_info = (unsigned long)&wwan_info,
1036 }, {
1037 USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
1038 USB_CDC_PROTO_NONE),
1039 .driver_info = (unsigned long) &cdc_info,
1040 }, {
1041 USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
1042 USB_CDC_PROTO_NONE),
1043 .driver_info = (unsigned long)&wwan_info,
1044
1045 }, {
1046 /* Various Huawei modems with a network port like the UMG1831 */
1047 USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
1048 USB_CDC_SUBCLASS_ETHERNET, 255),
1049 .driver_info = (unsigned long)&wwan_info,
1050 },
1051 { }, /* END */
1052 };
1053 MODULE_DEVICE_TABLE(usb, products);
1054
1055 static struct usb_driver cdc_driver = {
1056 .name = "cdc_ether",
1057 .id_table = products,
1058 .probe = usbnet_probe,
1059 .disconnect = usbnet_disconnect,
1060 .suspend = usbnet_suspend,
1061 .resume = usbnet_resume,
1062 .reset_resume = usbnet_resume,
1063 .supports_autosuspend = 1,
1064 .disable_hub_initiated_lpm = 1,
1065 };
1066
1067 module_usb_driver(cdc_driver);
1068
1069 MODULE_AUTHOR("David Brownell");
1070 MODULE_DESCRIPTION("USB CDC Ethernet devices");
1071 MODULE_LICENSE("GPL");
1072