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