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Commit | Line | Data |
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4324fd49 DB |
1 | /* |
2 | * CDC Ethernet based networking peripherals | |
3 | * Copyright (C) 2003-2005 by David Brownell | |
ad55d71a | 4 | * Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync) |
4324fd49 DB |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
9cb00073 | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
4324fd49 DB |
18 | */ |
19 | ||
20 | // #define DEBUG // error path messages, extra info | |
21 | // #define VERBOSE // more; success messages | |
22 | ||
4324fd49 | 23 | #include <linux/module.h> |
4324fd49 DB |
24 | #include <linux/netdevice.h> |
25 | #include <linux/etherdevice.h> | |
4324fd49 DB |
26 | #include <linux/ethtool.h> |
27 | #include <linux/workqueue.h> | |
28 | #include <linux/mii.h> | |
29 | #include <linux/usb.h> | |
a8c28f23 | 30 | #include <linux/usb/cdc.h> |
3692e94f | 31 | #include <linux/usb/usbnet.h> |
4324fd49 DB |
32 | |
33 | ||
8857ec28 | 34 | #if IS_ENABLED(CONFIG_USB_NET_RNDIS_HOST) |
ad55d71a OAVR |
35 | |
36 | static int is_rndis(struct usb_interface_descriptor *desc) | |
37 | { | |
8e95a202 JP |
38 | return (desc->bInterfaceClass == USB_CLASS_COMM && |
39 | desc->bInterfaceSubClass == 2 && | |
40 | desc->bInterfaceProtocol == 0xff); | |
ad55d71a OAVR |
41 | } |
42 | ||
43 | static int is_activesync(struct usb_interface_descriptor *desc) | |
44 | { | |
8e95a202 JP |
45 | return (desc->bInterfaceClass == USB_CLASS_MISC && |
46 | desc->bInterfaceSubClass == 1 && | |
47 | desc->bInterfaceProtocol == 1); | |
ad55d71a OAVR |
48 | } |
49 | ||
7e99eedd TB |
50 | static int is_wireless_rndis(struct usb_interface_descriptor *desc) |
51 | { | |
8e95a202 JP |
52 | return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER && |
53 | desc->bInterfaceSubClass == 1 && | |
54 | desc->bInterfaceProtocol == 3); | |
7e99eedd TB |
55 | } |
56 | ||
ad55d71a OAVR |
57 | #else |
58 | ||
59 | #define is_rndis(desc) 0 | |
60 | #define is_activesync(desc) 0 | |
7e99eedd | 61 | #define is_wireless_rndis(desc) 0 |
ad55d71a OAVR |
62 | |
63 | #endif | |
64 | ||
21851264 JS |
65 | static const u8 mbm_guid[16] = { |
66 | 0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01, | |
67 | 0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a, | |
68 | }; | |
69 | ||
d80c679b OB |
70 | static void usbnet_cdc_update_filter(struct usbnet *dev) |
71 | { | |
72 | struct cdc_state *info = (void *) &dev->data; | |
73 | struct usb_interface *intf = info->control; | |
f46ad73a | 74 | struct net_device *net = dev->net; |
d80c679b | 75 | |
f46ad73a ON |
76 | u16 cdc_filter = USB_CDC_PACKET_TYPE_DIRECTED |
77 | | USB_CDC_PACKET_TYPE_BROADCAST; | |
d80c679b | 78 | |
f46ad73a ON |
79 | /* filtering on the device is an optional feature and not worth |
80 | * the hassle so we just roughly care about snooping and if any | |
81 | * multicast is requested, we take every multicast | |
d80c679b | 82 | */ |
f46ad73a ON |
83 | if (net->flags & IFF_PROMISC) |
84 | cdc_filter |= USB_CDC_PACKET_TYPE_PROMISCUOUS; | |
85 | if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) | |
86 | cdc_filter |= USB_CDC_PACKET_TYPE_ALL_MULTICAST; | |
d80c679b OB |
87 | |
88 | usb_control_msg(dev->udev, | |
89 | usb_sndctrlpipe(dev->udev, 0), | |
90 | USB_CDC_SET_ETHERNET_PACKET_FILTER, | |
91 | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
92 | cdc_filter, | |
93 | intf->cur_altsetting->desc.bInterfaceNumber, | |
94 | NULL, | |
95 | 0, | |
96 | USB_CTRL_SET_TIMEOUT | |
97 | ); | |
98 | } | |
99 | ||
8857ec28 | 100 | /* probes control interface, claims data interface, collects the bulk |
4324fd49 DB |
101 | * endpoints, activates data interface (if needed), maybe sets MTU. |
102 | * all pure cdc, except for certain firmware workarounds, and knowing | |
103 | * that rndis uses one different rule. | |
104 | */ | |
105 | int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf) | |
106 | { | |
107 | u8 *buf = intf->cur_altsetting->extra; | |
108 | int len = intf->cur_altsetting->extralen; | |
109 | struct usb_interface_descriptor *d; | |
110 | struct cdc_state *info = (void *) &dev->data; | |
111 | int status; | |
112 | int rndis; | |
6eddcb4c | 113 | bool android_rndis_quirk = false; |
4324fd49 | 114 | struct usb_driver *driver = driver_of(intf); |
823bd343 | 115 | struct usb_cdc_parsed_header header; |
4324fd49 | 116 | |
8857ec28 | 117 | if (sizeof(dev->data) < sizeof(*info)) |
4324fd49 DB |
118 | return -EDOM; |
119 | ||
120 | /* expect strict spec conformance for the descriptors, but | |
121 | * cope with firmware which stores them in the wrong place | |
122 | */ | |
123 | if (len == 0 && dev->udev->actconfig->extralen) { | |
124 | /* Motorola SB4100 (and others: Brad Hards says it's | |
125 | * from a Broadcom design) put CDC descriptors here | |
126 | */ | |
127 | buf = dev->udev->actconfig->extra; | |
128 | len = dev->udev->actconfig->extralen; | |
f5260f02 | 129 | dev_dbg(&intf->dev, "CDC descriptors on config\n"); |
4324fd49 DB |
130 | } |
131 | ||
4149b72e DB |
132 | /* Maybe CDC descriptors are after the endpoint? This bug has |
133 | * been seen on some 2Wire Inc RNDIS-ish products. | |
134 | */ | |
135 | if (len == 0) { | |
136 | struct usb_host_endpoint *hep; | |
137 | ||
138 | hep = intf->cur_altsetting->endpoint; | |
139 | if (hep) { | |
140 | buf = hep->extra; | |
141 | len = hep->extralen; | |
142 | } | |
143 | if (len) | |
144 | dev_dbg(&intf->dev, | |
145 | "CDC descriptors on endpoint\n"); | |
146 | } | |
147 | ||
4324fd49 DB |
148 | /* this assumes that if there's a non-RNDIS vendor variant |
149 | * of cdc-acm, it'll fail RNDIS requests cleanly. | |
150 | */ | |
8e95a202 JP |
151 | rndis = (is_rndis(&intf->cur_altsetting->desc) || |
152 | is_activesync(&intf->cur_altsetting->desc) || | |
153 | is_wireless_rndis(&intf->cur_altsetting->desc)); | |
4324fd49 | 154 | |
8857ec28 | 155 | memset(info, 0, sizeof(*info)); |
4324fd49 | 156 | info->control = intf; |
823bd343 ON |
157 | |
158 | cdc_parse_cdc_header(&header, intf, buf, len); | |
159 | ||
160 | info->u = header.usb_cdc_union_desc; | |
161 | info->header = header.usb_cdc_header_desc; | |
162 | info->ether = header.usb_cdc_ether_desc; | |
29c6dd59 ON |
163 | if (!info->u) { |
164 | if (rndis) | |
165 | goto skip; | |
166 | else /* in that case a quirk is mandatory */ | |
167 | goto bad_desc; | |
168 | } | |
823bd343 ON |
169 | /* we need a master/control interface (what we're |
170 | * probed with) and a slave/data interface; union | |
171 | * descriptors sort this all out. | |
172 | */ | |
173 | info->control = usb_ifnum_to_if(dev->udev, | |
174 | info->u->bMasterInterface0); | |
175 | info->data = usb_ifnum_to_if(dev->udev, | |
176 | info->u->bSlaveInterface0); | |
177 | if (!info->control || !info->data) { | |
178 | dev_dbg(&intf->dev, | |
179 | "master #%u/%p slave #%u/%p\n", | |
180 | info->u->bMasterInterface0, | |
181 | info->control, | |
182 | info->u->bSlaveInterface0, | |
183 | info->data); | |
184 | /* fall back to hard-wiring for RNDIS */ | |
185 | if (rndis) { | |
186 | android_rndis_quirk = true; | |
187 | goto skip; | |
4324fd49 | 188 | } |
823bd343 ON |
189 | goto bad_desc; |
190 | } | |
191 | if (info->control != intf) { | |
192 | dev_dbg(&intf->dev, "bogus CDC Union\n"); | |
193 | /* Ambit USB Cable Modem (and maybe others) | |
194 | * interchanges master and slave interface. | |
195 | */ | |
196 | if (info->data == intf) { | |
197 | info->data = info->control; | |
198 | info->control = intf; | |
199 | } else | |
200 | goto bad_desc; | |
201 | } | |
202 | ||
203 | /* some devices merge these - skip class check */ | |
204 | if (info->control == info->data) | |
205 | goto skip; | |
206 | ||
207 | /* a data interface altsetting does the real i/o */ | |
208 | d = &info->data->cur_altsetting->desc; | |
209 | if (d->bInterfaceClass != USB_CLASS_CDC_DATA) { | |
210 | dev_dbg(&intf->dev, "slave class %u\n", | |
211 | d->bInterfaceClass); | |
212 | goto bad_desc; | |
213 | } | |
214 | skip: | |
215 | if ( rndis && | |
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 | ||
7a5c7b85 | 224 | if (header.usb_cdc_ether_desc && info->ether->wMaxSegmentSize) { |
823bd343 ON |
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; | |
4324fd49 DB |
242 | } |
243 | ||
823bd343 ON |
244 | |
245 | ||
786e3dfb BD |
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. | |
6eddcb4c BM |
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. | |
ad55d71a | 253 | */ |
6eddcb4c | 254 | if (rndis && (!info->u || android_rndis_quirk)) { |
ad55d71a OAVR |
255 | info->control = usb_ifnum_to_if(dev->udev, 0); |
256 | info->data = usb_ifnum_to_if(dev->udev, 1); | |
6eddcb4c | 257 | if (!info->control || !info->data || info->control != intf) { |
ad55d71a | 258 | dev_dbg(&intf->dev, |
786e3dfb | 259 | "rndis: master #0/%p slave #1/%p\n", |
ad55d71a OAVR |
260 | info->control, |
261 | info->data); | |
262 | goto bad_desc; | |
263 | } | |
264 | ||
29c6dd59 | 265 | } else if (!info->header || (!rndis && !info->ether)) { |
4324fd49 DB |
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 | */ | |
1fc4c84d BM |
276 | if (info->data != info->control) { |
277 | status = usb_driver_claim_interface(driver, info->data, dev); | |
278 | if (status < 0) | |
279 | return status; | |
280 | } | |
4324fd49 DB |
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); | |
1fc4c84d BM |
285 | if (info->data != info->control) |
286 | usb_driver_release_interface(driver, info->data); | |
4324fd49 DB |
287 | return status; |
288 | } | |
289 | ||
290 | /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */ | |
1fc4c84d BM |
291 | if (info->data != info->control) |
292 | dev->status = NULL; | |
4324fd49 DB |
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; | |
8e95a202 JP |
298 | if (!usb_endpoint_is_int_in(desc) || |
299 | (le16_to_cpu(desc->wMaxPacketSize) | |
300 | < sizeof(struct usb_cdc_notification)) || | |
301 | !desc->bInterval) { | |
4324fd49 DB |
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 | } | |
c472ab68 | 312 | |
7f65b1f5 ON |
313 | return 0; |
314 | ||
315 | bad_desc: | |
316 | dev_info(&dev->udev->dev, "bad CDC descriptors\n"); | |
317 | return -ENODEV; | |
318 | } | |
319 | EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind); | |
320 | ||
321 | ||
322 | /* like usbnet_generic_cdc_bind() but handles filter initialization | |
323 | * correctly | |
324 | */ | |
325 | int 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 | ||
c472ab68 ON |
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 | */ | |
d80c679b OB |
338 | usbnet_cdc_update_filter(dev); |
339 | ||
7f65b1f5 ON |
340 | bail_out: |
341 | return rv; | |
4324fd49 | 342 | } |
7f65b1f5 | 343 | EXPORT_SYMBOL_GPL(usbnet_ether_cdc_bind); |
4324fd49 DB |
344 | |
345 | void 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 | ||
1fc4c84d BM |
350 | /* combined interface - nothing to do */ |
351 | if (info->data == info->control) | |
352 | return; | |
353 | ||
4324fd49 DB |
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 | } | |
370 | EXPORT_SYMBOL_GPL(usbnet_cdc_unbind); | |
371 | ||
8857ec28 | 372 | /* Communications Device Class, Ethernet Control model |
4324fd49 DB |
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. | |
8857ec28 | 380 | */ |
4324fd49 DB |
381 | |
382 | static void dumpspeed(struct usbnet *dev, __le32 *speeds) | |
383 | { | |
a475f603 JP |
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); | |
4324fd49 DB |
388 | } |
389 | ||
7a635ea9 | 390 | void usbnet_cdc_status(struct usbnet *dev, struct urb *urb) |
4324fd49 DB |
391 | { |
392 | struct usb_cdc_notification *event; | |
393 | ||
8857ec28 | 394 | if (urb->actual_length < sizeof(*event)) |
4324fd49 DB |
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: | |
a475f603 JP |
406 | netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n", |
407 | event->wValue ? "on" : "off"); | |
a6bda459 | 408 | usbnet_link_change(dev, !!event->wValue, 0); |
4324fd49 DB |
409 | break; |
410 | case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */ | |
a475f603 JP |
411 | netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n", |
412 | urb->actual_length); | |
8857ec28 | 413 | if (urb->actual_length != (sizeof(*event) + 8)) |
4324fd49 DB |
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: | |
60b86755 JP |
422 | netdev_err(dev->net, "CDC: unexpected notification %02x!\n", |
423 | event->bNotificationType); | |
4324fd49 DB |
424 | break; |
425 | } | |
426 | } | |
7a635ea9 | 427 | EXPORT_SYMBOL_GPL(usbnet_cdc_status); |
4324fd49 | 428 | |
7a635ea9 | 429 | int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf) |
4324fd49 DB |
430 | { |
431 | int status; | |
432 | struct cdc_state *info = (void *) &dev->data; | |
433 | ||
d632eb1b GKH |
434 | BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) |
435 | < sizeof(struct cdc_state))); | |
436 | ||
7f65b1f5 | 437 | status = usbnet_ether_cdc_bind(dev, intf); |
4324fd49 DB |
438 | if (status < 0) |
439 | return status; | |
440 | ||
03ad032b | 441 | status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress); |
4324fd49 DB |
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 | ||
4324fd49 DB |
448 | return 0; |
449 | } | |
7a635ea9 | 450 | EXPORT_SYMBOL_GPL(usbnet_cdc_bind); |
4324fd49 | 451 | |
bfe9b9d2 KE |
452 | static 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 | */ | |
469 | static 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 | ||
d5c83d0d KE |
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 | */ | |
37c9782c | 486 | static void usbnet_cdc_zte_status(struct usbnet *dev, struct urb *urb) |
d5c83d0d KE |
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 | ||
4324fd49 DB |
510 | static const struct driver_info cdc_info = { |
511 | .description = "CDC Ethernet Device", | |
c261344d | 512 | .flags = FLAG_ETHER | FLAG_POINTTOPOINT, |
7a635ea9 | 513 | .bind = usbnet_cdc_bind, |
4324fd49 | 514 | .unbind = usbnet_cdc_unbind, |
7a635ea9 | 515 | .status = usbnet_cdc_status, |
b77e26d1 | 516 | .set_rx_mode = usbnet_cdc_update_filter, |
a5e40708 | 517 | .manage_power = usbnet_manage_power, |
4324fd49 DB |
518 | }; |
519 | ||
bfe9b9d2 KE |
520 | static 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, | |
d5c83d0d | 525 | .status = usbnet_cdc_zte_status, |
bfe9b9d2 KE |
526 | .set_rx_mode = usbnet_cdc_update_filter, |
527 | .manage_power = usbnet_manage_power, | |
528 | .rx_fixup = usbnet_cdc_zte_rx_fixup, | |
529 | }; | |
530 | ||
b3c914aa | 531 | static const struct driver_info wwan_info = { |
e1e499ee MH |
532 | .description = "Mobile Broadband Network Device", |
533 | .flags = FLAG_WWAN, | |
7a635ea9 | 534 | .bind = usbnet_cdc_bind, |
e1e499ee | 535 | .unbind = usbnet_cdc_unbind, |
7a635ea9 | 536 | .status = usbnet_cdc_status, |
b77e26d1 | 537 | .set_rx_mode = usbnet_cdc_update_filter, |
a5e40708 | 538 | .manage_power = usbnet_manage_power, |
e1e499ee MH |
539 | }; |
540 | ||
4324fd49 DB |
541 | /*-------------------------------------------------------------------------*/ |
542 | ||
b3c914aa | 543 | #define HUAWEI_VENDOR_ID 0x12D1 |
4e6304b8 | 544 | #define NOVATEL_VENDOR_ID 0x1410 |
68d8318b | 545 | #define ZTE_VENDOR_ID 0x19D2 |
0370acd4 | 546 | #define DELL_VENDOR_ID 0x413C |
ac718b69 | 547 | #define REALTEK_VENDOR_ID 0x0bda |
43779f8d | 548 | #define SAMSUNG_VENDOR_ID 0x04e8 |
347eec34 | 549 | #define LENOVO_VENDOR_ID 0x17ef |
d065c3c1 | 550 | #define NVIDIA_VENDOR_ID 0x0955 |
5b9f5751 | 551 | #define HP_VENDOR_ID 0x03f0 |
d5b07ccc | 552 | #define MICROSOFT_VENDOR_ID 0x045e |
4324fd49 | 553 | |
8857ec28 FP |
554 | static const struct usb_device_id products[] = { |
555 | /* BLACKLIST !! | |
4324fd49 DB |
556 | * |
557 | * First blacklist any products that are egregiously nonconformant | |
558 | * with the CDC Ethernet specs. Minor braindamage we cope with; when | |
559 | * they're not even trying, needing a separate driver is only the first | |
560 | * of the differences to show up. | |
561 | */ | |
562 | ||
563 | #define ZAURUS_MASTER_INTERFACE \ | |
564 | .bInterfaceClass = USB_CLASS_COMM, \ | |
565 | .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \ | |
566 | .bInterfaceProtocol = USB_CDC_PROTO_NONE | |
567 | ||
568 | /* SA-1100 based Sharp Zaurus ("collie"), or compatible; | |
569 | * wire-incompatible with true CDC Ethernet implementations. | |
570 | * (And, it seems, needlessly so...) | |
571 | */ | |
572 | { | |
573 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
574 | | USB_DEVICE_ID_MATCH_DEVICE, | |
575 | .idVendor = 0x04DD, | |
576 | .idProduct = 0x8004, | |
577 | ZAURUS_MASTER_INTERFACE, | |
578 | .driver_info = 0, | |
579 | }, | |
580 | ||
581 | /* PXA-25x based Sharp Zaurii. Note that it seems some of these | |
582 | * (later models especially) may have shipped only with firmware | |
583 | * advertising false "CDC MDLM" compatibility ... but we're not | |
584 | * clear which models did that, so for now let's assume the worst. | |
585 | */ | |
586 | { | |
587 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
588 | | USB_DEVICE_ID_MATCH_DEVICE, | |
589 | .idVendor = 0x04DD, | |
590 | .idProduct = 0x8005, /* A-300 */ | |
591 | ZAURUS_MASTER_INTERFACE, | |
592 | .driver_info = 0, | |
593 | }, { | |
594 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
595 | | USB_DEVICE_ID_MATCH_DEVICE, | |
596 | .idVendor = 0x04DD, | |
597 | .idProduct = 0x8006, /* B-500/SL-5600 */ | |
598 | ZAURUS_MASTER_INTERFACE, | |
599 | .driver_info = 0, | |
600 | }, { | |
601 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
8857ec28 | 602 | | USB_DEVICE_ID_MATCH_DEVICE, |
4324fd49 DB |
603 | .idVendor = 0x04DD, |
604 | .idProduct = 0x8007, /* C-700 */ | |
605 | ZAURUS_MASTER_INTERFACE, | |
606 | .driver_info = 0, | |
607 | }, { | |
608 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
609 | | USB_DEVICE_ID_MATCH_DEVICE, | |
610 | .idVendor = 0x04DD, | |
611 | .idProduct = 0x9031, /* C-750 C-760 */ | |
612 | ZAURUS_MASTER_INTERFACE, | |
613 | .driver_info = 0, | |
614 | }, { | |
615 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
616 | | USB_DEVICE_ID_MATCH_DEVICE, | |
617 | .idVendor = 0x04DD, | |
618 | .idProduct = 0x9032, /* SL-6000 */ | |
619 | ZAURUS_MASTER_INTERFACE, | |
620 | .driver_info = 0, | |
621 | }, { | |
622 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
623 | | USB_DEVICE_ID_MATCH_DEVICE, | |
624 | .idVendor = 0x04DD, | |
625 | /* reported with some C860 units */ | |
626 | .idProduct = 0x9050, /* C-860 */ | |
627 | ZAURUS_MASTER_INTERFACE, | |
628 | .driver_info = 0, | |
629 | }, | |
630 | ||
efcaa205 DB |
631 | /* Olympus has some models with a Zaurus-compatible option. |
632 | * R-1000 uses a FreeScale i.MXL cpu (ARMv4T) | |
633 | */ | |
634 | { | |
635 | .match_flags = USB_DEVICE_ID_MATCH_INT_INFO | |
636 | | USB_DEVICE_ID_MATCH_DEVICE, | |
637 | .idVendor = 0x07B4, | |
638 | .idProduct = 0x0F02, /* R-1000 */ | |
639 | ZAURUS_MASTER_INTERFACE, | |
640 | .driver_info = 0, | |
641 | }, | |
642 | ||
7a635ea9 AZ |
643 | /* LG Electronics VL600 wants additional headers on every frame */ |
644 | { | |
645 | USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM, | |
646 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
6d74eb94 | 647 | .driver_info = 0, |
7a635ea9 AZ |
648 | }, |
649 | ||
ee932bf9 ST |
650 | /* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */ |
651 | { | |
652 | USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM, | |
653 | USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE), | |
654 | .driver_info = 0, | |
655 | }, | |
656 | ||
f8295ec2 DW |
657 | /* Novatel USB551L and MC551 - handled by qmi_wwan */ |
658 | { | |
c39ba1c2 DW |
659 | USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM, |
660 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
f8295ec2 DW |
661 | .driver_info = 0, |
662 | }, | |
663 | ||
664 | /* Novatel E362 - handled by qmi_wwan */ | |
665 | { | |
c39ba1c2 DW |
666 | USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM, |
667 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
f8295ec2 DW |
668 | .driver_info = 0, |
669 | }, | |
670 | ||
0370acd4 DW |
671 | /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */ |
672 | { | |
673 | USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM, | |
674 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
675 | .driver_info = 0, | |
676 | }, | |
677 | ||
678 | /* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */ | |
679 | { | |
680 | USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM, | |
681 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
682 | .driver_info = 0, | |
683 | }, | |
684 | ||
7fdb7846 DW |
685 | /* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */ |
686 | { | |
687 | USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM, | |
688 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
689 | .driver_info = 0, | |
690 | }, | |
691 | ||
7b5939ba YY |
692 | /* Novatel Expedite E371 - handled by qmi_wwan */ |
693 | { | |
694 | USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM, | |
695 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
696 | .driver_info = 0, | |
697 | }, | |
698 | ||
5b9f5751 BM |
699 | /* HP lt2523 (Novatel E371) - handled by qmi_wwan */ |
700 | { | |
701 | USB_DEVICE_AND_INTERFACE_INFO(HP_VENDOR_ID, 0x421d, USB_CLASS_COMM, | |
702 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
703 | .driver_info = 0, | |
704 | }, | |
705 | ||
45d213f5 DW |
706 | /* AnyDATA ADU960S - handled by qmi_wwan */ |
707 | { | |
708 | USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM, | |
709 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
710 | .driver_info = 0, | |
711 | }, | |
712 | ||
c2020be3 BM |
713 | /* Huawei E1820 - handled by qmi_wwan */ |
714 | { | |
715 | USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1), | |
716 | .driver_info = 0, | |
717 | }, | |
718 | ||
ac718b69 | 719 | /* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */ |
ac718b69 | 720 | { |
721 | USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM, | |
722 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
723 | .driver_info = 0, | |
724 | }, | |
c073f666 | 725 | |
726 | /* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */ | |
727 | { | |
728 | USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM, | |
729 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
730 | .driver_info = 0, | |
731 | }, | |
ac718b69 | 732 | |
10c32717 | 733 | /* Samsung USB Ethernet Adapters */ |
734 | { | |
735 | USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM, | |
736 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
737 | .driver_info = 0, | |
738 | }, | |
739 | ||
d248cafc | 740 | /* ThinkPad USB-C Dock (based on Realtek RTL8153) */ |
741 | { | |
742 | USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3062, USB_CLASS_COMM, | |
743 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
744 | .driver_info = 0, | |
745 | }, | |
746 | ||
747 | /* ThinkPad Thunderbolt 3 Dock (based on Realtek RTL8153) */ | |
748 | { | |
749 | USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3069, USB_CLASS_COMM, | |
750 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
751 | .driver_info = 0, | |
752 | }, | |
753 | ||
347eec34 CH |
754 | /* Lenovo Thinkpad USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */ |
755 | { | |
756 | USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7205, USB_CLASS_COMM, | |
757 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
758 | .driver_info = 0, | |
759 | }, | |
760 | ||
d248cafc | 761 | /* Lenovo USB C to Ethernet Adapter (based on Realtek RTL8153) */ |
762 | { | |
763 | USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x720c, USB_CLASS_COMM, | |
764 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
765 | .driver_info = 0, | |
766 | }, | |
767 | ||
768 | /* Lenovo USB-C Travel Hub (based on Realtek RTL8153) */ | |
769 | { | |
770 | USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x7214, USB_CLASS_COMM, | |
771 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
772 | .driver_info = 0, | |
773 | }, | |
774 | ||
d065c3c1 ZL |
775 | /* NVIDIA Tegra USB 3.0 Ethernet Adapters (based on Realtek RTL8153) */ |
776 | { | |
777 | USB_DEVICE_AND_INTERFACE_INFO(NVIDIA_VENDOR_ID, 0x09ff, USB_CLASS_COMM, | |
d5b07ccc RR |
778 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), |
779 | .driver_info = 0, | |
780 | }, | |
781 | ||
782 | /* Microsoft Surface 2 dock (based on Realtek RTL8152) */ | |
783 | { | |
784 | USB_DEVICE_AND_INTERFACE_INFO(MICROSOFT_VENDOR_ID, 0x07ab, USB_CLASS_COMM, | |
785 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
786 | .driver_info = 0, | |
787 | }, | |
788 | ||
789 | /* Microsoft Surface 3 dock (based on Realtek RTL8153) */ | |
790 | { | |
791 | USB_DEVICE_AND_INTERFACE_INFO(MICROSOFT_VENDOR_ID, 0x07c6, USB_CLASS_COMM, | |
d065c3c1 ZL |
792 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), |
793 | .driver_info = 0, | |
794 | }, | |
795 | ||
8857ec28 | 796 | /* WHITELIST!!! |
4324fd49 DB |
797 | * |
798 | * CDC Ether uses two interfaces, not necessarily consecutive. | |
799 | * We match the main interface, ignoring the optional device | |
800 | * class so we could handle devices that aren't exclusively | |
801 | * CDC ether. | |
802 | * | |
803 | * NOTE: this match must come AFTER entries blacklisting devices | |
804 | * because of bugs/quirks in a given product (like Zaurus, above). | |
805 | */ | |
806 | { | |
68d8318b | 807 | /* ZTE (Vodafone) K3805-Z */ |
d82a7f54 FP |
808 | USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM, |
809 | USB_CDC_SUBCLASS_ETHERNET, | |
810 | USB_CDC_PROTO_NONE), | |
68d8318b ABSS |
811 | .driver_info = (unsigned long)&wwan_info, |
812 | }, { | |
813 | /* ZTE (Vodafone) K3806-Z */ | |
d82a7f54 FP |
814 | USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM, |
815 | USB_CDC_SUBCLASS_ETHERNET, | |
816 | USB_CDC_PROTO_NONE), | |
68d8318b ABSS |
817 | .driver_info = (unsigned long)&wwan_info, |
818 | }, { | |
819 | /* ZTE (Vodafone) K4510-Z */ | |
d82a7f54 FP |
820 | USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM, |
821 | USB_CDC_SUBCLASS_ETHERNET, | |
822 | USB_CDC_PROTO_NONE), | |
68d8318b ABSS |
823 | .driver_info = (unsigned long)&wwan_info, |
824 | }, { | |
825 | /* ZTE (Vodafone) K3770-Z */ | |
d82a7f54 FP |
826 | USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM, |
827 | USB_CDC_SUBCLASS_ETHERNET, | |
828 | USB_CDC_PROTO_NONE), | |
68d8318b ABSS |
829 | .driver_info = (unsigned long)&wwan_info, |
830 | }, { | |
831 | /* ZTE (Vodafone) K3772-Z */ | |
d82a7f54 FP |
832 | USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM, |
833 | USB_CDC_SUBCLASS_ETHERNET, | |
834 | USB_CDC_PROTO_NONE), | |
68d8318b | 835 | .driver_info = (unsigned long)&wwan_info, |
00928204 FP |
836 | }, { |
837 | /* Telit modules */ | |
838 | USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM, | |
839 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
840 | .driver_info = (kernel_ulong_t) &wwan_info, | |
0b88393c DP |
841 | }, { |
842 | /* Dell DW5580 modules */ | |
843 | USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x81ba, USB_CLASS_COMM, | |
844 | USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE), | |
845 | .driver_info = (kernel_ulong_t)&wwan_info, | |
bfe9b9d2 KE |
846 | }, { |
847 | /* ZTE modules */ | |
848 | USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, USB_CLASS_COMM, | |
849 | USB_CDC_SUBCLASS_ETHERNET, | |
850 | USB_CDC_PROTO_NONE), | |
851 | .driver_info = (unsigned long)&zte_cdc_info, | |
4e6304b8 | 852 | }, { |
4324fd49 DB |
853 | USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET, |
854 | USB_CDC_PROTO_NONE), | |
855 | .driver_info = (unsigned long) &cdc_info, | |
cac477e8 | 856 | }, { |
21851264 JS |
857 | USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM, |
858 | USB_CDC_PROTO_NONE), | |
b3c914aa | 859 | .driver_info = (unsigned long)&wwan_info, |
21851264 | 860 | |
b3c914aa DW |
861 | }, { |
862 | /* Various Huawei modems with a network port like the UMG1831 */ | |
d82a7f54 FP |
863 | USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM, |
864 | USB_CDC_SUBCLASS_ETHERNET, 255), | |
b3c914aa | 865 | .driver_info = (unsigned long)&wwan_info, |
4324fd49 | 866 | }, |
8857ec28 | 867 | { }, /* END */ |
4324fd49 DB |
868 | }; |
869 | MODULE_DEVICE_TABLE(usb, products); | |
870 | ||
871 | static struct usb_driver cdc_driver = { | |
4324fd49 DB |
872 | .name = "cdc_ether", |
873 | .id_table = products, | |
874 | .probe = usbnet_probe, | |
875 | .disconnect = usbnet_disconnect, | |
876 | .suspend = usbnet_suspend, | |
877 | .resume = usbnet_resume, | |
7f515790 | 878 | .reset_resume = usbnet_resume, |
69ee472f | 879 | .supports_autosuspend = 1, |
e1f12eb6 | 880 | .disable_hub_initiated_lpm = 1, |
4324fd49 DB |
881 | }; |
882 | ||
d632eb1b | 883 | module_usb_driver(cdc_driver); |
4324fd49 DB |
884 | |
885 | MODULE_AUTHOR("David Brownell"); | |
886 | MODULE_DESCRIPTION("USB CDC Ethernet devices"); | |
887 | MODULE_LICENSE("GPL"); |