arm: tegra: comms: Enable autopm for RAW-IP network driver.
[linux-2.6.git] / drivers / net / usb / rndis_host.c
1 /*
2  * Host Side support for RNDIS Networking Links
3  * Copyright (C) 2005 by David Brownell
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18  */
19 #include <linux/module.h>
20 #include <linux/init.h>
21 #include <linux/netdevice.h>
22 #include <linux/etherdevice.h>
23 #include <linux/ethtool.h>
24 #include <linux/workqueue.h>
25 #include <linux/slab.h>
26 #include <linux/mii.h>
27 #include <linux/usb.h>
28 #include <linux/usb/cdc.h>
29 #include <linux/usb/usbnet.h>
30 #include <linux/usb/rndis_host.h>
31
32
33 /*
34  * RNDIS is NDIS remoted over USB.  It's a MSFT variant of CDC ACM ... of
35  * course ACM was intended for modems, not Ethernet links!  USB's standard
36  * for Ethernet links is "CDC Ethernet", which is significantly simpler.
37  *
38  * NOTE that Microsoft's "RNDIS 1.0" specification is incomplete.  Issues
39  * include:
40  *    - Power management in particular relies on information that's scattered
41  *      through other documentation, and which is incomplete or incorrect even
42  *      there.
43  *    - There are various undocumented protocol requirements, such as the
44  *      need to send unused garbage in control-OUT messages.
45  *    - In some cases, MS-Windows will emit undocumented requests; this
46  *      matters more to peripheral implementations than host ones.
47  *
48  * Moreover there's a no-open-specs variant of RNDIS called "ActiveSync".
49  *
50  * For these reasons and others, ** USE OF RNDIS IS STRONGLY DISCOURAGED ** in
51  * favor of such non-proprietary alternatives as CDC Ethernet or the newer (and
52  * currently rare) "Ethernet Emulation Model" (EEM).
53  */
54
55 /*
56  * RNDIS notifications from device: command completion; "reverse"
57  * keepalives; etc
58  */
59 void rndis_status(struct usbnet *dev, struct urb *urb)
60 {
61         netdev_dbg(dev->net, "rndis status urb, len %d stat %d\n",
62                    urb->actual_length, urb->status);
63         // FIXME for keepalives, respond immediately (asynchronously)
64         // if not an RNDIS status, do like cdc_status(dev,urb) does
65 }
66 EXPORT_SYMBOL_GPL(rndis_status);
67
68 /*
69  * RNDIS indicate messages.
70  */
71 static void rndis_msg_indicate(struct usbnet *dev, struct rndis_indicate *msg,
72                                 int buflen)
73 {
74         struct cdc_state *info = (void *)&dev->data;
75         struct device *udev = &info->control->dev;
76
77         if (dev->driver_info->indication) {
78                 dev->driver_info->indication(dev, msg, buflen);
79         } else {
80                 switch (msg->status) {
81                 case RNDIS_STATUS_MEDIA_CONNECT:
82                         dev_info(udev, "rndis media connect\n");
83                         break;
84                 case RNDIS_STATUS_MEDIA_DISCONNECT:
85                         dev_info(udev, "rndis media disconnect\n");
86                         break;
87                 default:
88                         dev_info(udev, "rndis indication: 0x%08x\n",
89                                         le32_to_cpu(msg->status));
90                 }
91         }
92 }
93
94 /*
95  * RPC done RNDIS-style.  Caller guarantees:
96  * - message is properly byteswapped
97  * - there's no other request pending
98  * - buf can hold up to 1KB response (required by RNDIS spec)
99  * On return, the first few entries are already byteswapped.
100  *
101  * Call context is likely probe(), before interface name is known,
102  * which is why we won't try to use it in the diagnostics.
103  */
104 int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen)
105 {
106         struct cdc_state        *info = (void *) &dev->data;
107         struct usb_cdc_notification notification;
108         int                     master_ifnum;
109         int                     retval;
110         int                     partial;
111         unsigned                count;
112         __le32                  rsp;
113         u32                     xid = 0, msg_len, request_id;
114
115         /* REVISIT when this gets called from contexts other than probe() or
116          * disconnect(): either serialize, or dispatch responses on xid
117          */
118
119         /* Issue the request; xid is unique, don't bother byteswapping it */
120         if (likely(buf->msg_type != RNDIS_MSG_HALT &&
121                    buf->msg_type != RNDIS_MSG_RESET)) {
122                 xid = dev->xid++;
123                 if (!xid)
124                         xid = dev->xid++;
125                 buf->request_id = (__force __le32) xid;
126         }
127         master_ifnum = info->control->cur_altsetting->desc.bInterfaceNumber;
128         retval = usb_control_msg(dev->udev,
129                 usb_sndctrlpipe(dev->udev, 0),
130                 USB_CDC_SEND_ENCAPSULATED_COMMAND,
131                 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
132                 0, master_ifnum,
133                 buf, le32_to_cpu(buf->msg_len),
134                 RNDIS_CONTROL_TIMEOUT_MS);
135         if (unlikely(retval < 0 || xid == 0))
136                 return retval;
137
138         /* Some devices don't respond on the control channel until
139          * polled on the status channel, so do that first. */
140         if (dev->driver_info->data & RNDIS_DRIVER_DATA_POLL_STATUS) {
141                 retval = usb_interrupt_msg(
142                         dev->udev,
143                         usb_rcvintpipe(dev->udev,
144                                        dev->status->desc.bEndpointAddress),
145                         &notification, sizeof(notification), &partial,
146                         RNDIS_CONTROL_TIMEOUT_MS);
147                 if (unlikely(retval < 0))
148                         return retval;
149         }
150
151         /* Poll the control channel; the request probably completed immediately */
152         rsp = buf->msg_type | RNDIS_MSG_COMPLETION;
153         for (count = 0; count < 10; count++) {
154                 memset(buf, 0, CONTROL_BUFFER_SIZE);
155                 retval = usb_control_msg(dev->udev,
156                         usb_rcvctrlpipe(dev->udev, 0),
157                         USB_CDC_GET_ENCAPSULATED_RESPONSE,
158                         USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
159                         0, master_ifnum,
160                         buf, buflen,
161                         RNDIS_CONTROL_TIMEOUT_MS);
162                 if (likely(retval >= 8)) {
163                         msg_len = le32_to_cpu(buf->msg_len);
164                         request_id = (__force u32) buf->request_id;
165                         if (likely(buf->msg_type == rsp)) {
166                                 if (likely(request_id == xid)) {
167                                         if (unlikely(rsp == RNDIS_MSG_RESET_C))
168                                                 return 0;
169                                         if (likely(RNDIS_STATUS_SUCCESS
170                                                         == buf->status))
171                                                 return 0;
172                                         dev_dbg(&info->control->dev,
173                                                 "rndis reply status %08x\n",
174                                                 le32_to_cpu(buf->status));
175                                         return -EL3RST;
176                                 }
177                                 dev_dbg(&info->control->dev,
178                                         "rndis reply id %d expected %d\n",
179                                         request_id, xid);
180                                 /* then likely retry */
181                         } else switch (buf->msg_type) {
182                         case RNDIS_MSG_INDICATE:        /* fault/event */
183                                 rndis_msg_indicate(dev, (void *)buf, buflen);
184
185                                 break;
186                         case RNDIS_MSG_KEEPALIVE: {     /* ping */
187                                 struct rndis_keepalive_c *msg = (void *)buf;
188
189                                 msg->msg_type = RNDIS_MSG_KEEPALIVE_C;
190                                 msg->msg_len = cpu_to_le32(sizeof *msg);
191                                 msg->status = RNDIS_STATUS_SUCCESS;
192                                 retval = usb_control_msg(dev->udev,
193                                         usb_sndctrlpipe(dev->udev, 0),
194                                         USB_CDC_SEND_ENCAPSULATED_COMMAND,
195                                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
196                                         0, master_ifnum,
197                                         msg, sizeof *msg,
198                                         RNDIS_CONTROL_TIMEOUT_MS);
199                                 if (unlikely(retval < 0))
200                                         dev_dbg(&info->control->dev,
201                                                 "rndis keepalive err %d\n",
202                                                 retval);
203                                 }
204                                 break;
205                         default:
206                                 dev_dbg(&info->control->dev,
207                                         "unexpected rndis msg %08x len %d\n",
208                                         le32_to_cpu(buf->msg_type), msg_len);
209                         }
210                 } else {
211                         /* device probably issued a protocol stall; ignore */
212                         dev_dbg(&info->control->dev,
213                                 "rndis response error, code %d\n", retval);
214                 }
215                 msleep(20);
216         }
217         dev_dbg(&info->control->dev, "rndis response timeout\n");
218         return -ETIMEDOUT;
219 }
220 EXPORT_SYMBOL_GPL(rndis_command);
221
222 /*
223  * rndis_query:
224  *
225  * Performs a query for @oid along with 0 or more bytes of payload as
226  * specified by @in_len. If @reply_len is not set to -1 then the reply
227  * length is checked against this value, resulting in an error if it
228  * doesn't match.
229  *
230  * NOTE: Adding a payload exactly or greater than the size of the expected
231  * response payload is an evident requirement MSFT added for ActiveSync.
232  *
233  * The only exception is for OIDs that return a variably sized response,
234  * in which case no payload should be added.  This undocumented (and
235  * nonsensical!) issue was found by sniffing protocol requests from the
236  * ActiveSync 4.1 Windows driver.
237  */
238 static int rndis_query(struct usbnet *dev, struct usb_interface *intf,
239                 void *buf, __le32 oid, u32 in_len,
240                 void **reply, int *reply_len)
241 {
242         int retval;
243         union {
244                 void                    *buf;
245                 struct rndis_msg_hdr    *header;
246                 struct rndis_query      *get;
247                 struct rndis_query_c    *get_c;
248         } u;
249         u32 off, len;
250
251         u.buf = buf;
252
253         memset(u.get, 0, sizeof *u.get + in_len);
254         u.get->msg_type = RNDIS_MSG_QUERY;
255         u.get->msg_len = cpu_to_le32(sizeof *u.get + in_len);
256         u.get->oid = oid;
257         u.get->len = cpu_to_le32(in_len);
258         u.get->offset = cpu_to_le32(20);
259
260         retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE);
261         if (unlikely(retval < 0)) {
262                 dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) failed, %d\n",
263                                 oid, retval);
264                 return retval;
265         }
266
267         off = le32_to_cpu(u.get_c->offset);
268         len = le32_to_cpu(u.get_c->len);
269         if (unlikely((8 + off + len) > CONTROL_BUFFER_SIZE))
270                 goto response_error;
271
272         if (*reply_len != -1 && len != *reply_len)
273                 goto response_error;
274
275         *reply = (unsigned char *) &u.get_c->request_id + off;
276         *reply_len = len;
277
278         return retval;
279
280 response_error:
281         dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) "
282                         "invalid response - off %d len %d\n",
283                 oid, off, len);
284         return -EDOM;
285 }
286
287 /* same as usbnet_netdev_ops but MTU change not allowed */
288 static const struct net_device_ops rndis_netdev_ops = {
289         .ndo_open               = usbnet_open,
290         .ndo_stop               = usbnet_stop,
291         .ndo_start_xmit         = usbnet_start_xmit,
292         .ndo_tx_timeout         = usbnet_tx_timeout,
293         .ndo_set_mac_address    = eth_mac_addr,
294         .ndo_validate_addr      = eth_validate_addr,
295 };
296
297 int
298 generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
299 {
300         int                     retval;
301         struct net_device       *net = dev->net;
302         struct cdc_state        *info = (void *) &dev->data;
303         union {
304                 void                    *buf;
305                 struct rndis_msg_hdr    *header;
306                 struct rndis_init       *init;
307                 struct rndis_init_c     *init_c;
308                 struct rndis_query      *get;
309                 struct rndis_query_c    *get_c;
310                 struct rndis_set        *set;
311                 struct rndis_set_c      *set_c;
312                 struct rndis_halt       *halt;
313         } u;
314         u32                     tmp;
315         __le32                  phym_unspec, *phym;
316         int                     reply_len;
317         unsigned char           *bp;
318
319         /* we can't rely on i/o from stack working, or stack allocation */
320         u.buf = kmalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
321         if (!u.buf)
322                 return -ENOMEM;
323         retval = usbnet_generic_cdc_bind(dev, intf);
324         if (retval < 0)
325                 goto fail;
326
327         u.init->msg_type = RNDIS_MSG_INIT;
328         u.init->msg_len = cpu_to_le32(sizeof *u.init);
329         u.init->major_version = cpu_to_le32(1);
330         u.init->minor_version = cpu_to_le32(0);
331
332         /* max transfer (in spec) is 0x4000 at full speed, but for
333          * TX we'll stick to one Ethernet packet plus RNDIS framing.
334          * For RX we handle drivers that zero-pad to end-of-packet.
335          * Don't let userspace change these settings.
336          *
337          * NOTE: there still seems to be wierdness here, as if we need
338          * to do some more things to make sure WinCE targets accept this.
339          * They default to jumbograms of 8KB or 16KB, which is absurd
340          * for such low data rates and which is also more than Linux
341          * can usually expect to allocate for SKB data...
342          */
343         net->hard_header_len += sizeof (struct rndis_data_hdr);
344         dev->hard_mtu = net->mtu + net->hard_header_len;
345
346         dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1);
347         if (dev->maxpacket == 0) {
348                 netif_dbg(dev, probe, dev->net,
349                           "dev->maxpacket can't be 0\n");
350                 retval = -EINVAL;
351                 goto fail_and_release;
352         }
353
354         dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1);
355         dev->rx_urb_size &= ~(dev->maxpacket - 1);
356         u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size);
357
358         net->netdev_ops = &rndis_netdev_ops;
359
360         retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE);
361         if (unlikely(retval < 0)) {
362                 /* it might not even be an RNDIS device!! */
363                 dev_err(&intf->dev, "RNDIS init failed, %d\n", retval);
364                 goto fail_and_release;
365         }
366         tmp = le32_to_cpu(u.init_c->max_transfer_size);
367         if (tmp < dev->hard_mtu) {
368                 if (tmp <= net->hard_header_len) {
369                         dev_err(&intf->dev,
370                                 "dev can't take %u byte packets (max %u)\n",
371                                 dev->hard_mtu, tmp);
372                         retval = -EINVAL;
373                         goto halt_fail_and_release;
374                 }
375                 dev_warn(&intf->dev,
376                          "dev can't take %u byte packets (max %u), "
377                          "adjusting MTU to %u\n",
378                          dev->hard_mtu, tmp, tmp - net->hard_header_len);
379                 dev->hard_mtu = tmp;
380                 net->mtu = dev->hard_mtu - net->hard_header_len;
381         }
382
383         /* REVISIT:  peripheral "alignment" request is ignored ... */
384         dev_dbg(&intf->dev,
385                 "hard mtu %u (%u from dev), rx buflen %Zu, align %d\n",
386                 dev->hard_mtu, tmp, dev->rx_urb_size,
387                 1 << le32_to_cpu(u.init_c->packet_alignment));
388
389         /* module has some device initialization code needs to be done right
390          * after RNDIS_INIT */
391         if (dev->driver_info->early_init &&
392                         dev->driver_info->early_init(dev) != 0)
393                 goto halt_fail_and_release;
394
395         /* Check physical medium */
396         phym = NULL;
397         reply_len = sizeof *phym;
398         retval = rndis_query(dev, intf, u.buf, OID_GEN_PHYSICAL_MEDIUM,
399                         0, (void **) &phym, &reply_len);
400         if (retval != 0 || !phym) {
401                 /* OID is optional so don't fail here. */
402                 phym_unspec = RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED;
403                 phym = &phym_unspec;
404         }
405         if ((flags & FLAG_RNDIS_PHYM_WIRELESS) &&
406                         *phym != RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) {
407                 netif_dbg(dev, probe, dev->net,
408                           "driver requires wireless physical medium, but device is not\n");
409                 retval = -ENODEV;
410                 goto halt_fail_and_release;
411         }
412         if ((flags & FLAG_RNDIS_PHYM_NOT_WIRELESS) &&
413                         *phym == RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) {
414                 netif_dbg(dev, probe, dev->net,
415                           "driver requires non-wireless physical medium, but device is wireless.\n");
416                 retval = -ENODEV;
417                 goto halt_fail_and_release;
418         }
419
420         /* Get designated host ethernet address */
421         reply_len = ETH_ALEN;
422         retval = rndis_query(dev, intf, u.buf, OID_802_3_PERMANENT_ADDRESS,
423                         48, (void **) &bp, &reply_len);
424         if (unlikely(retval< 0)) {
425                 dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);
426                 goto halt_fail_and_release;
427         }
428         memcpy(net->dev_addr, bp, ETH_ALEN);
429         memcpy(net->perm_addr, bp, ETH_ALEN);
430
431         /* set a nonzero filter to enable data transfers */
432         memset(u.set, 0, sizeof *u.set);
433         u.set->msg_type = RNDIS_MSG_SET;
434         u.set->msg_len = cpu_to_le32(4 + sizeof *u.set);
435         u.set->oid = OID_GEN_CURRENT_PACKET_FILTER;
436         u.set->len = cpu_to_le32(4);
437         u.set->offset = cpu_to_le32((sizeof *u.set) - 8);
438         *(__le32 *)(u.buf + sizeof *u.set) = RNDIS_DEFAULT_FILTER;
439
440         retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE);
441         if (unlikely(retval < 0)) {
442                 dev_err(&intf->dev, "rndis set packet filter, %d\n", retval);
443                 goto halt_fail_and_release;
444         }
445
446         retval = 0;
447
448         kfree(u.buf);
449         return retval;
450
451 halt_fail_and_release:
452         memset(u.halt, 0, sizeof *u.halt);
453         u.halt->msg_type = RNDIS_MSG_HALT;
454         u.halt->msg_len = cpu_to_le32(sizeof *u.halt);
455         (void) rndis_command(dev, (void *)u.halt, CONTROL_BUFFER_SIZE);
456 fail_and_release:
457         usb_set_intfdata(info->data, NULL);
458         usb_driver_release_interface(driver_of(intf), info->data);
459         info->data = NULL;
460 fail:
461         kfree(u.buf);
462         return retval;
463 }
464 EXPORT_SYMBOL_GPL(generic_rndis_bind);
465
466 static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
467 {
468         return generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_NOT_WIRELESS);
469 }
470
471 void rndis_unbind(struct usbnet *dev, struct usb_interface *intf)
472 {
473         struct rndis_halt       *halt;
474
475         /* try to clear any rndis state/activity (no i/o from stack!) */
476         halt = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
477         if (halt) {
478                 halt->msg_type = RNDIS_MSG_HALT;
479                 halt->msg_len = cpu_to_le32(sizeof *halt);
480                 (void) rndis_command(dev, (void *)halt, CONTROL_BUFFER_SIZE);
481                 kfree(halt);
482         }
483
484         usbnet_cdc_unbind(dev, intf);
485 }
486 EXPORT_SYMBOL_GPL(rndis_unbind);
487
488 /*
489  * DATA -- host must not write zlps
490  */
491 int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
492 {
493         /* peripheral may have batched packets to us... */
494         while (likely(skb->len)) {
495                 struct rndis_data_hdr   *hdr = (void *)skb->data;
496                 struct sk_buff          *skb2;
497                 u32                     msg_len, data_offset, data_len;
498
499                 msg_len = le32_to_cpu(hdr->msg_len);
500                 data_offset = le32_to_cpu(hdr->data_offset);
501                 data_len = le32_to_cpu(hdr->data_len);
502
503                 /* don't choke if we see oob, per-packet data, etc */
504                 if (unlikely(hdr->msg_type != RNDIS_MSG_PACKET ||
505                              skb->len < msg_len ||
506                              (data_offset + data_len + 8) > msg_len)) {
507                         dev->net->stats.rx_frame_errors++;
508                         netdev_dbg(dev->net, "bad rndis message %d/%d/%d/%d, len %d\n",
509                                    le32_to_cpu(hdr->msg_type),
510                                    msg_len, data_offset, data_len, skb->len);
511                         return 0;
512                 }
513                 skb_pull(skb, 8 + data_offset);
514
515                 /* at most one packet left? */
516                 if (likely((data_len - skb->len) <= sizeof *hdr)) {
517                         skb_trim(skb, data_len);
518                         break;
519                 }
520
521                 /* try to return all the packets in the batch */
522                 skb2 = skb_clone(skb, GFP_ATOMIC);
523                 if (unlikely(!skb2))
524                         break;
525                 skb_pull(skb, msg_len - sizeof *hdr);
526                 skb_trim(skb2, data_len);
527                 usbnet_skb_return(dev, skb2);
528         }
529
530         /* caller will usbnet_skb_return the remaining packet */
531         return 1;
532 }
533 EXPORT_SYMBOL_GPL(rndis_rx_fixup);
534
535 struct sk_buff *
536 rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
537 {
538         struct rndis_data_hdr   *hdr;
539         struct sk_buff          *skb2;
540         unsigned                len = skb->len;
541
542         if (likely(!skb_cloned(skb))) {
543                 int     room = skb_headroom(skb);
544
545                 /* enough head room as-is? */
546                 if (unlikely((sizeof *hdr) <= room))
547                         goto fill;
548
549                 /* enough room, but needs to be readjusted? */
550                 room += skb_tailroom(skb);
551                 if (likely((sizeof *hdr) <= room)) {
552                         skb->data = memmove(skb->head + sizeof *hdr,
553                                             skb->data, len);
554                         skb_set_tail_pointer(skb, len);
555                         goto fill;
556                 }
557         }
558
559         /* create a new skb, with the correct size (and tailpad) */
560         skb2 = skb_copy_expand(skb, sizeof *hdr, 1, flags);
561         dev_kfree_skb_any(skb);
562         if (unlikely(!skb2))
563                 return skb2;
564         skb = skb2;
565
566         /* fill out the RNDIS header.  we won't bother trying to batch
567          * packets; Linux minimizes wasted bandwidth through tx queues.
568          */
569 fill:
570         hdr = (void *) __skb_push(skb, sizeof *hdr);
571         memset(hdr, 0, sizeof *hdr);
572         hdr->msg_type = RNDIS_MSG_PACKET;
573         hdr->msg_len = cpu_to_le32(skb->len);
574         hdr->data_offset = cpu_to_le32(sizeof(*hdr) - 8);
575         hdr->data_len = cpu_to_le32(len);
576
577         /* FIXME make the last packet always be short ... */
578         return skb;
579 }
580 EXPORT_SYMBOL_GPL(rndis_tx_fixup);
581
582
583 static const struct driver_info rndis_info = {
584         .description =  "RNDIS device",
585         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT,
586         .bind =         rndis_bind,
587         .unbind =       rndis_unbind,
588         .status =       rndis_status,
589         .rx_fixup =     rndis_rx_fixup,
590         .tx_fixup =     rndis_tx_fixup,
591 };
592
593 static const struct driver_info rndis_poll_status_info = {
594         .description =  "RNDIS device (poll status before control)",
595         .flags =        FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT,
596         .data =         RNDIS_DRIVER_DATA_POLL_STATUS,
597         .bind =         rndis_bind,
598         .unbind =       rndis_unbind,
599         .status =       rndis_status,
600         .rx_fixup =     rndis_rx_fixup,
601         .tx_fixup =     rndis_tx_fixup,
602 };
603
604 /*-------------------------------------------------------------------------*/
605
606 static const struct usb_device_id       products [] = {
607 {
608         /* 2Wire HomePortal 1000SW */
609         USB_DEVICE_AND_INTERFACE_INFO(0x1630, 0x0042,
610                                       USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
611         .driver_info = (unsigned long) &rndis_poll_status_info,
612 }, {
613         /* RNDIS is MSFT's un-official variant of CDC ACM */
614         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
615         .driver_info = (unsigned long) &rndis_info,
616 }, {
617         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
618         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
619         .driver_info = (unsigned long) &rndis_poll_status_info,
620 }, {
621         /* RNDIS for tethering */
622         USB_INTERFACE_INFO(USB_CLASS_WIRELESS_CONTROLLER, 1, 3),
623         .driver_info = (unsigned long) &rndis_info,
624 },
625         { },            // END
626 };
627 MODULE_DEVICE_TABLE(usb, products);
628
629 static struct usb_driver rndis_driver = {
630         .name =         "rndis_host",
631         .id_table =     products,
632         .probe =        usbnet_probe,
633         .disconnect =   usbnet_disconnect,
634         .suspend =      usbnet_suspend,
635         .resume =       usbnet_resume,
636 };
637
638 static int __init rndis_init(void)
639 {
640         return usb_register(&rndis_driver);
641 }
642 module_init(rndis_init);
643
644 static void __exit rndis_exit(void)
645 {
646         usb_deregister(&rndis_driver);
647 }
648 module_exit(rndis_exit);
649
650 MODULE_AUTHOR("David Brownell");
651 MODULE_DESCRIPTION("USB Host side RNDIS driver");
652 MODULE_LICENSE("GPL");