Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/net/usb/cdc_mbim.c

  1 /*
  2  * Copyright (c) 2012  Smith Micro Software, Inc.
  3  * Copyright (c) 2012  Bjørn Mork <bjorn@mork.no>
  4  *
  5  * This driver is based on and reuse most of cdc_ncm, which is
  6  * Copyright (C) ST-Ericsson 2010-2012
  7  *
  8  * This program is free software; you can redistribute it and/or
  9  * modify it under the terms of the GNU General Public License
 10  * version 2 as published by the Free Software Foundation.
 11  */
 12 
 13 #include <linux/module.h>
 14 #include <linux/netdevice.h>
 15 #include <linux/ethtool.h>
 16 #include <linux/if_vlan.h>
 17 #include <linux/ip.h>
 18 #include <linux/mii.h>
 19 #include <linux/usb.h>
 20 #include <linux/usb/cdc.h>
 21 #include <linux/usb/usbnet.h>
 22 #include <linux/usb/cdc-wdm.h>
 23 #include <linux/usb/cdc_ncm.h>
 24 #include <net/ipv6.h>
 25 #include <net/addrconf.h>
 26 
 27 /* alternative VLAN for IP session 0 if not untagged */
 28 #define MBIM_IPS0_VID   4094
 29 
 30 /* driver specific data - must match cdc_ncm usage */
 31 struct cdc_mbim_state {
 32         struct cdc_ncm_ctx *ctx;
 33         atomic_t pmcount;
 34         struct usb_driver *subdriver;
 35         unsigned long _unused;
 36         unsigned long flags;
 37 };
 38 
 39 /* flags for the cdc_mbim_state.flags field */
 40 enum cdc_mbim_flags {
 41         FLAG_IPS0_VLAN = 1 << 0,        /* IP session 0 is tagged  */
 42 };
 43 
 44 /* using a counter to merge subdriver requests with our own into a combined state */
 45 static int cdc_mbim_manage_power(struct usbnet *dev, int on)
 46 {
 47         struct cdc_mbim_state *info = (void *)&dev->data;
 48         int rv = 0;
 49 
 50         dev_dbg(&dev->intf->dev, "%s() pmcount=%d, on=%d\n", __func__, atomic_read(&info->pmcount), on);
 51 
 52         if ((on && atomic_add_return(1, &info->pmcount) == 1) || (!on && atomic_dec_and_test(&info->pmcount))) {
 53                 /* need autopm_get/put here to ensure the usbcore sees the new value */
 54                 rv = usb_autopm_get_interface(dev->intf);
 55                 dev->intf->needs_remote_wakeup = on;
 56                 if (!rv)
 57                         usb_autopm_put_interface(dev->intf);
 58         }
 59         return 0;
 60 }
 61 
 62 static int cdc_mbim_wdm_manage_power(struct usb_interface *intf, int status)
 63 {
 64         struct usbnet *dev = usb_get_intfdata(intf);
 65 
 66         /* can be called while disconnecting */
 67         if (!dev)
 68                 return 0;
 69 
 70         return cdc_mbim_manage_power(dev, status);
 71 }
 72 
 73 static int cdc_mbim_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
 74 {
 75         struct usbnet *dev = netdev_priv(netdev);
 76         struct cdc_mbim_state *info = (void *)&dev->data;
 77 
 78         /* creation of this VLAN is a request to tag IP session 0 */
 79         if (vid == MBIM_IPS0_VID)
 80                 info->flags |= FLAG_IPS0_VLAN;
 81         else
 82                 if (vid >= 512) /* we don't map these to MBIM session */
 83                         return -EINVAL;
 84         return 0;
 85 }
 86 
 87 static int cdc_mbim_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid)
 88 {
 89         struct usbnet *dev = netdev_priv(netdev);
 90         struct cdc_mbim_state *info = (void *)&dev->data;
 91 
 92         /* this is a request for an untagged IP session 0 */
 93         if (vid == MBIM_IPS0_VID)
 94                 info->flags &= ~FLAG_IPS0_VLAN;
 95         return 0;
 96 }
 97 
 98 static const struct net_device_ops cdc_mbim_netdev_ops = {
 99         .ndo_open             = usbnet_open,
100         .ndo_stop             = usbnet_stop,
101         .ndo_start_xmit       = usbnet_start_xmit,
102         .ndo_tx_timeout       = usbnet_tx_timeout,
103         .ndo_change_mtu       = usbnet_change_mtu,
104         .ndo_set_mac_address  = eth_mac_addr,
105         .ndo_validate_addr    = eth_validate_addr,
106         .ndo_vlan_rx_add_vid  = cdc_mbim_rx_add_vid,
107         .ndo_vlan_rx_kill_vid = cdc_mbim_rx_kill_vid,
108 };
109 
110 /* Change the control interface altsetting and update the .driver_info
111  * pointer if the matching entry after changing class codes points to
112  * a different struct
113  */
114 static int cdc_mbim_set_ctrlalt(struct usbnet *dev, struct usb_interface *intf, u8 alt)
115 {
116         struct usb_driver *driver = to_usb_driver(intf->dev.driver);
117         const struct usb_device_id *id;
118         struct driver_info *info;
119         int ret;
120 
121         ret = usb_set_interface(dev->udev,
122                                 intf->cur_altsetting->desc.bInterfaceNumber,
123                                 alt);
124         if (ret)
125                 return ret;
126 
127         id = usb_match_id(intf, driver->id_table);
128         if (!id)
129                 return -ENODEV;
130 
131         info = (struct driver_info *)id->driver_info;
132         if (info != dev->driver_info) {
133                 dev_dbg(&intf->dev, "driver_info updated to '%s'\n",
134                         info->description);
135                 dev->driver_info = info;
136         }
137         return 0;
138 }
139 
140 static int cdc_mbim_bind(struct usbnet *dev, struct usb_interface *intf)
141 {
142         struct cdc_ncm_ctx *ctx;
143         struct usb_driver *subdriver = ERR_PTR(-ENODEV);
144         int ret = -ENODEV;
145         u8 data_altsetting = 1;
146         struct cdc_mbim_state *info = (void *)&dev->data;
147 
148         /* should we change control altsetting on a NCM/MBIM function? */
149         if (cdc_ncm_select_altsetting(intf) == CDC_NCM_COMM_ALTSETTING_MBIM) {
150                 data_altsetting = CDC_NCM_DATA_ALTSETTING_MBIM;
151                 ret = cdc_mbim_set_ctrlalt(dev, intf, CDC_NCM_COMM_ALTSETTING_MBIM);
152                 if (ret)
153                         goto err;
154                 ret = -ENODEV;
155         }
156 
157         /* we will hit this for NCM/MBIM functions if prefer_mbim is false */
158         if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
159                 goto err;
160 
161         ret = cdc_ncm_bind_common(dev, intf, data_altsetting);
162         if (ret)
163                 goto err;
164 
165         ctx = info->ctx;
166 
167         /* The MBIM descriptor and the status endpoint are required */
168         if (ctx->mbim_desc && dev->status)
169                 subdriver = usb_cdc_wdm_register(ctx->control,
170                                                  &dev->status->desc,
171                                                  le16_to_cpu(ctx->mbim_desc->wMaxControlMessage),
172                                                  cdc_mbim_wdm_manage_power);
173         if (IS_ERR(subdriver)) {
174                 ret = PTR_ERR(subdriver);
175                 cdc_ncm_unbind(dev, intf);
176                 goto err;
177         }
178 
179         /* can't let usbnet use the interrupt endpoint */
180         dev->status = NULL;
181         info->subdriver = subdriver;
182 
183         /* MBIM cannot do ARP */
184         dev->net->flags |= IFF_NOARP;
185 
186         /* no need to put the VLAN tci in the packet headers */
187         dev->net->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_FILTER;
188 
189         /* monitor VLAN additions and removals */
190         dev->net->netdev_ops = &cdc_mbim_netdev_ops;
191 err:
192         return ret;
193 }
194 
195 static void cdc_mbim_unbind(struct usbnet *dev, struct usb_interface *intf)
196 {
197         struct cdc_mbim_state *info = (void *)&dev->data;
198         struct cdc_ncm_ctx *ctx = info->ctx;
199 
200         /* disconnect subdriver from control interface */
201         if (info->subdriver && info->subdriver->disconnect)
202                 info->subdriver->disconnect(ctx->control);
203         info->subdriver = NULL;
204 
205         /* let NCM unbind clean up both control and data interface */
206         cdc_ncm_unbind(dev, intf);
207 }
208 
209 /* verify that the ethernet protocol is IPv4 or IPv6 */
210 static bool is_ip_proto(__be16 proto)
211 {
212         switch (proto) {
213         case htons(ETH_P_IP):
214         case htons(ETH_P_IPV6):
215                 return true;
216         }
217         return false;
218 }
219 
220 static struct sk_buff *cdc_mbim_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
221 {
222         struct sk_buff *skb_out;
223         struct cdc_mbim_state *info = (void *)&dev->data;
224         struct cdc_ncm_ctx *ctx = info->ctx;
225         __le32 sign = cpu_to_le32(USB_CDC_MBIM_NDP16_IPS_SIGN);
226         u16 tci = 0;
227         bool is_ip;
228         u8 *c;
229 
230         if (!ctx)
231                 goto error;
232 
233         if (skb) {
234                 if (skb->len <= ETH_HLEN)
235                         goto error;
236 
237                 /* Some applications using e.g. packet sockets will
238                  * bypass the VLAN acceleration and create tagged
239                  * ethernet frames directly.  We primarily look for
240                  * the accelerated out-of-band tag, but fall back if
241                  * required
242                  */
243                 skb_reset_mac_header(skb);
244                 if (vlan_get_tag(skb, &tci) < 0 && skb->len > VLAN_ETH_HLEN &&
245                     __vlan_get_tag(skb, &tci) == 0) {
246                         is_ip = is_ip_proto(vlan_eth_hdr(skb)->h_vlan_encapsulated_proto);
247                         skb_pull(skb, VLAN_ETH_HLEN);
248                 } else {
249                         is_ip = is_ip_proto(eth_hdr(skb)->h_proto);
250                         skb_pull(skb, ETH_HLEN);
251                 }
252 
253                 /* Is IP session <0> tagged too? */
254                 if (info->flags & FLAG_IPS0_VLAN) {
255                         /* drop all untagged packets */
256                         if (!tci)
257                                 goto error;
258                         /* map MBIM_IPS0_VID to IPS<0> */
259                         if (tci == MBIM_IPS0_VID)
260                                 tci = 0;
261                 }
262 
263                 /* mapping VLANs to MBIM sessions:
264                  *   no tag     => IPS session <0> if !FLAG_IPS0_VLAN
265                  *   1 - 255    => IPS session <vlanid>
266                  *   256 - 511  => DSS session <vlanid - 256>
267                  *   512 - 4093 => unsupported, drop
268                  *   4094       => IPS session <0> if FLAG_IPS0_VLAN
269                  */
270 
271                 switch (tci & 0x0f00) {
272                 case 0x0000: /* VLAN ID 0 - 255 */
273                         if (!is_ip)
274                                 goto error;
275                         c = (u8 *)&sign;
276                         c[3] = tci;
277                         break;
278                 case 0x0100: /* VLAN ID 256 - 511 */
279                         if (is_ip)
280                                 goto error;
281                         sign = cpu_to_le32(USB_CDC_MBIM_NDP16_DSS_SIGN);
282                         c = (u8 *)&sign;
283                         c[3] = tci;
284                         break;
285                 default:
286                         netif_err(dev, tx_err, dev->net,
287                                   "unsupported tci=0x%04x\n", tci);
288                         goto error;
289                 }
290         }
291 
292         spin_lock_bh(&ctx->mtx);
293         skb_out = cdc_ncm_fill_tx_frame(dev, skb, sign);
294         spin_unlock_bh(&ctx->mtx);
295         return skb_out;
296 
297 error:
298         if (skb)
299                 dev_kfree_skb_any(skb);
300 
301         return NULL;
302 }
303 
304 /* Some devices are known to send Neigbor Solicitation messages and
305  * require Neigbor Advertisement replies.  The IPv6 core will not
306  * respond since IFF_NOARP is set, so we must handle them ourselves.
307  */
308 static void do_neigh_solicit(struct usbnet *dev, u8 *buf, u16 tci)
309 {
310         struct ipv6hdr *iph = (void *)buf;
311         struct nd_msg *msg = (void *)(iph + 1);
312         struct net_device *netdev;
313         struct inet6_dev *in6_dev;
314         bool is_router;
315 
316         /* we'll only respond to requests from unicast addresses to
317          * our solicited node addresses.
318          */
319         if (!ipv6_addr_is_solict_mult(&iph->daddr) ||
320             !(ipv6_addr_type(&iph->saddr) & IPV6_ADDR_UNICAST))
321                 return;
322 
323         /* need to send the NA on the VLAN dev, if any */
324         rcu_read_lock();
325         if (tci) {
326                 netdev = __vlan_find_dev_deep_rcu(dev->net, htons(ETH_P_8021Q),
327                                                   tci);
328                 if (!netdev) {
329                         rcu_read_unlock();
330                         return;
331                 }
332         } else {
333                 netdev = dev->net;
334         }
335         dev_hold(netdev);
336         rcu_read_unlock();
337 
338         in6_dev = in6_dev_get(netdev);
339         if (!in6_dev)
340                 goto out;
341         is_router = !!in6_dev->cnf.forwarding;
342         in6_dev_put(in6_dev);
343 
344         /* ipv6_stub != NULL if in6_dev_get returned an inet6_dev */
345         ipv6_stub->ndisc_send_na(netdev, NULL, &iph->saddr, &msg->target,
346                                  is_router /* router */,
347                                  true /* solicited */,
348                                  false /* override */,
349                                  true /* inc_opt */);
350 out:
351         dev_put(netdev);
352 }
353 
354 static bool is_neigh_solicit(u8 *buf, size_t len)
355 {
356         struct ipv6hdr *iph = (void *)buf;
357         struct nd_msg *msg = (void *)(iph + 1);
358 
359         return (len >= sizeof(struct ipv6hdr) + sizeof(struct nd_msg) &&
360                 iph->nexthdr == IPPROTO_ICMPV6 &&
361                 msg->icmph.icmp6_code == 0 &&
362                 msg->icmph.icmp6_type == NDISC_NEIGHBOUR_SOLICITATION);
363 }
364 
365 
366 static struct sk_buff *cdc_mbim_process_dgram(struct usbnet *dev, u8 *buf, size_t len, u16 tci)
367 {
368         __be16 proto = htons(ETH_P_802_3);
369         struct sk_buff *skb = NULL;
370 
371         if (tci < 256 || tci == MBIM_IPS0_VID) { /* IPS session? */
372                 if (len < sizeof(struct iphdr))
373                         goto err;
374 
375                 switch (*buf & 0xf0) {
376                 case 0x40:
377                         proto = htons(ETH_P_IP);
378                         break;
379                 case 0x60:
380                         if (is_neigh_solicit(buf, len))
381                                 do_neigh_solicit(dev, buf, tci);
382                         proto = htons(ETH_P_IPV6);
383                         break;
384                 default:
385                         goto err;
386                 }
387         }
388 
389         skb = netdev_alloc_skb_ip_align(dev->net,  len + ETH_HLEN);
390         if (!skb)
391                 goto err;
392 
393         /* add an ethernet header */
394         skb_put(skb, ETH_HLEN);
395         skb_reset_mac_header(skb);
396         eth_hdr(skb)->h_proto = proto;
397         memset(eth_hdr(skb)->h_source, 0, ETH_ALEN);
398         memcpy(eth_hdr(skb)->h_dest, dev->net->dev_addr, ETH_ALEN);
399 
400         /* add datagram */
401         memcpy(skb_put(skb, len), buf, len);
402 
403         /* map MBIM session to VLAN */
404         if (tci)
405                 vlan_put_tag(skb, htons(ETH_P_8021Q), tci);
406 err:
407         return skb;
408 }
409 
410 static int cdc_mbim_rx_fixup(struct usbnet *dev, struct sk_buff *skb_in)
411 {
412         struct sk_buff *skb;
413         struct cdc_mbim_state *info = (void *)&dev->data;
414         struct cdc_ncm_ctx *ctx = info->ctx;
415         int len;
416         int nframes;
417         int x;
418         int offset;
419         struct usb_cdc_ncm_ndp16 *ndp16;
420         struct usb_cdc_ncm_dpe16 *dpe16;
421         int ndpoffset;
422         int loopcount = 50; /* arbitrary max preventing infinite loop */
423         u32 payload = 0;
424         u8 *c;
425         u16 tci;
426 
427         ndpoffset = cdc_ncm_rx_verify_nth16(ctx, skb_in);
428         if (ndpoffset < 0)
429                 goto error;
430 
431 next_ndp:
432         nframes = cdc_ncm_rx_verify_ndp16(skb_in, ndpoffset);
433         if (nframes < 0)
434                 goto error;
435 
436         ndp16 = (struct usb_cdc_ncm_ndp16 *)(skb_in->data + ndpoffset);
437 
438         switch (ndp16->dwSignature & cpu_to_le32(0x00ffffff)) {
439         case cpu_to_le32(USB_CDC_MBIM_NDP16_IPS_SIGN):
440                 c = (u8 *)&ndp16->dwSignature;
441                 tci = c[3];
442                 /* tag IPS<0> packets too if MBIM_IPS0_VID exists */
443                 if (!tci && info->flags & FLAG_IPS0_VLAN)
444                         tci = MBIM_IPS0_VID;
445                 break;
446         case cpu_to_le32(USB_CDC_MBIM_NDP16_DSS_SIGN):
447                 c = (u8 *)&ndp16->dwSignature;
448                 tci = c[3] + 256;
449                 break;
450         default:
451                 netif_dbg(dev, rx_err, dev->net,
452                           "unsupported NDP signature <0x%08x>\n",
453                           le32_to_cpu(ndp16->dwSignature));
454                 goto err_ndp;
455 
456         }
457 
458         dpe16 = ndp16->dpe16;
459         for (x = 0; x < nframes; x++, dpe16++) {
460                 offset = le16_to_cpu(dpe16->wDatagramIndex);
461                 len = le16_to_cpu(dpe16->wDatagramLength);
462 
463                 /*
464                  * CDC NCM ch. 3.7
465                  * All entries after first NULL entry are to be ignored
466                  */
467                 if ((offset == 0) || (len == 0)) {
468                         if (!x)
469                                 goto err_ndp; /* empty NTB */
470                         break;
471                 }
472 
473                 /* sanity checking */
474                 if (((offset + len) > skb_in->len) || (len > ctx->rx_max)) {
475                         netif_dbg(dev, rx_err, dev->net,
476                                   "invalid frame detected (ignored) offset[%u]=%u, length=%u, skb=%p\n",
477                                   x, offset, len, skb_in);
478                         if (!x)
479                                 goto err_ndp;
480                         break;
481                 } else {
482                         skb = cdc_mbim_process_dgram(dev, skb_in->data + offset, len, tci);
483                         if (!skb)
484                                 goto error;
485                         usbnet_skb_return(dev, skb);
486                         payload += len; /* count payload bytes in this NTB */
487                 }
488         }
489 err_ndp:
490         /* are there more NDPs to process? */
491         ndpoffset = le16_to_cpu(ndp16->wNextNdpIndex);
492         if (ndpoffset && loopcount--)
493                 goto next_ndp;
494 
495         /* update stats */
496         ctx->rx_overhead += skb_in->len - payload;
497         ctx->rx_ntbs++;
498 
499         return 1;
500 error:
501         return 0;
502 }
503 
504 static int cdc_mbim_suspend(struct usb_interface *intf, pm_message_t message)
505 {
506         int ret = -ENODEV;
507         struct usbnet *dev = usb_get_intfdata(intf);
508         struct cdc_mbim_state *info = (void *)&dev->data;
509         struct cdc_ncm_ctx *ctx = info->ctx;
510 
511         if (!ctx)
512                 goto error;
513 
514         /*
515          * Both usbnet_suspend() and subdriver->suspend() MUST return 0
516          * in system sleep context, otherwise, the resume callback has
517          * to recover device from previous suspend failure.
518          */
519         ret = usbnet_suspend(intf, message);
520         if (ret < 0)
521                 goto error;
522 
523         if (intf == ctx->control && info->subdriver && info->subdriver->suspend)
524                 ret = info->subdriver->suspend(intf, message);
525         if (ret < 0)
526                 usbnet_resume(intf);
527 
528 error:
529         return ret;
530 }
531 
532 static int cdc_mbim_resume(struct usb_interface *intf)
533 {
534         int  ret = 0;
535         struct usbnet *dev = usb_get_intfdata(intf);
536         struct cdc_mbim_state *info = (void *)&dev->data;
537         struct cdc_ncm_ctx *ctx = info->ctx;
538         bool callsub = (intf == ctx->control && info->subdriver && info->subdriver->resume);
539 
540         if (callsub)
541                 ret = info->subdriver->resume(intf);
542         if (ret < 0)
543                 goto err;
544         ret = usbnet_resume(intf);
545         if (ret < 0 && callsub)
546                 info->subdriver->suspend(intf, PMSG_SUSPEND);
547 err:
548         return ret;
549 }
550 
551 static const struct driver_info cdc_mbim_info = {
552         .description = "CDC MBIM",
553         .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN,
554         .bind = cdc_mbim_bind,
555         .unbind = cdc_mbim_unbind,
556         .manage_power = cdc_mbim_manage_power,
557         .rx_fixup = cdc_mbim_rx_fixup,
558         .tx_fixup = cdc_mbim_tx_fixup,
559 };
560 
561 /* MBIM and NCM devices should not need a ZLP after NTBs with
562  * dwNtbOutMaxSize length. Nevertheless, a number of devices from
563  * different vendor IDs will fail unless we send ZLPs, forcing us
564  * to make this the default.
565  *
566  * This default may cause a performance penalty for spec conforming
567  * devices wanting to take advantage of optimizations possible without
568  * ZLPs.  A whitelist is added in an attempt to avoid this for devices
569  * known to conform to the MBIM specification.
570  *
571  * All known devices supporting NCM compatibility mode are also
572  * conforming to the NCM and MBIM specifications. For this reason, the
573  * NCM subclass entry is also in the ZLP whitelist.
574  */
575 static const struct driver_info cdc_mbim_info_zlp = {
576         .description = "CDC MBIM",
577         .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN | FLAG_SEND_ZLP,
578         .bind = cdc_mbim_bind,
579         .unbind = cdc_mbim_unbind,
580         .manage_power = cdc_mbim_manage_power,
581         .rx_fixup = cdc_mbim_rx_fixup,
582         .tx_fixup = cdc_mbim_tx_fixup,
583 };
584 
585 static const struct usb_device_id mbim_devs[] = {
586         /* This duplicate NCM entry is intentional. MBIM devices can
587          * be disguised as NCM by default, and this is necessary to
588          * allow us to bind the correct driver_info to such devices.
589          *
590          * bind() will sort out this for us, selecting the correct
591          * entry and reject the other
592          */
593         { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE),
594           .driver_info = (unsigned long)&cdc_mbim_info,
595         },
596         /* ZLP conformance whitelist: All Ericsson MBIM devices */
597         { USB_VENDOR_AND_INTERFACE_INFO(0x0bdb, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE),
598           .driver_info = (unsigned long)&cdc_mbim_info,
599         },
600         /* default entry */
601         { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE),
602           .driver_info = (unsigned long)&cdc_mbim_info_zlp,
603         },
604         {
605         },
606 };
607 MODULE_DEVICE_TABLE(usb, mbim_devs);
608 
609 static struct usb_driver cdc_mbim_driver = {
610         .name = "cdc_mbim",
611         .id_table = mbim_devs,
612         .probe = usbnet_probe,
613         .disconnect = usbnet_disconnect,
614         .suspend = cdc_mbim_suspend,
615         .resume = cdc_mbim_resume,
616         .reset_resume = cdc_mbim_resume,
617         .supports_autosuspend = 1,
618         .disable_hub_initiated_lpm = 1,
619 };
620 module_usb_driver(cdc_mbim_driver);
621 
622 MODULE_AUTHOR("Greg Suarez <gsuarez@smithmicro.com>");
623 MODULE_AUTHOR("Bjørn Mork <bjorn@mork.no>");
624 MODULE_DESCRIPTION("USB CDC MBIM host driver");
625 MODULE_LICENSE("GPL");
626 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us