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a19259c3 DG |
1 | /* |
2 | * ipheth.c - Apple iPhone USB Ethernet driver | |
3 | * | |
4 | * Copyright (c) 2009 Diego Giagio <diego@giagio.com> | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * 3. Neither the name of GIAGIO.COM nor the names of its contributors | |
16 | * may be used to endorse or promote products derived from this software | |
17 | * without specific prior written permission. | |
18 | * | |
19 | * Alternatively, provided that this notice is retained in full, this | |
20 | * software may be distributed under the terms of the GNU General | |
21 | * Public License ("GPL") version 2, in which case the provisions of the | |
22 | * GPL apply INSTEAD OF those given above. | |
23 | * | |
24 | * The provided data structures and external interfaces from this code | |
25 | * are not restricted to be used by modules with a GPL compatible license. | |
26 | * | |
27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
28 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
29 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
30 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
31 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
32 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
33 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
34 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
35 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
36 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
37 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | |
38 | * DAMAGE. | |
39 | * | |
40 | * | |
41 | * Attention: iPhone device must be paired, otherwise it won't respond to our | |
42 | * driver. For more info: http://giagio.com/wiki/moin.cgi/iPhoneEthernetDriver | |
43 | * | |
44 | */ | |
45 | ||
46 | #include <linux/kernel.h> | |
47 | #include <linux/errno.h> | |
48 | #include <linux/init.h> | |
49 | #include <linux/slab.h> | |
50 | #include <linux/module.h> | |
51 | #include <linux/netdevice.h> | |
52 | #include <linux/etherdevice.h> | |
53 | #include <linux/ethtool.h> | |
54 | #include <linux/usb.h> | |
55 | #include <linux/workqueue.h> | |
56 | ||
57 | #define USB_VENDOR_APPLE 0x05ac | |
58 | #define USB_PRODUCT_IPHONE 0x1290 | |
59 | #define USB_PRODUCT_IPHONE_3G 0x1292 | |
60 | #define USB_PRODUCT_IPHONE_3GS 0x1294 | |
f95d76ab | 61 | #define USB_PRODUCT_IPHONE_4 0x1297 |
a19259c3 DG |
62 | |
63 | #define IPHETH_USBINTF_CLASS 255 | |
64 | #define IPHETH_USBINTF_SUBCLASS 253 | |
65 | #define IPHETH_USBINTF_PROTO 1 | |
66 | ||
67 | #define IPHETH_BUF_SIZE 1516 | |
68 | #define IPHETH_TX_TIMEOUT (5 * HZ) | |
69 | ||
70 | #define IPHETH_INTFNUM 2 | |
71 | #define IPHETH_ALT_INTFNUM 1 | |
72 | ||
73 | #define IPHETH_CTRL_ENDP 0x00 | |
74 | #define IPHETH_CTRL_BUF_SIZE 0x40 | |
75 | #define IPHETH_CTRL_TIMEOUT (5 * HZ) | |
76 | ||
77 | #define IPHETH_CMD_GET_MACADDR 0x00 | |
78 | #define IPHETH_CMD_CARRIER_CHECK 0x45 | |
79 | ||
80 | #define IPHETH_CARRIER_CHECK_TIMEOUT round_jiffies_relative(1 * HZ) | |
81 | #define IPHETH_CARRIER_ON 0x04 | |
82 | ||
83 | static struct usb_device_id ipheth_table[] = { | |
84 | { USB_DEVICE_AND_INTERFACE_INFO( | |
85 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE, | |
86 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
87 | IPHETH_USBINTF_PROTO) }, | |
88 | { USB_DEVICE_AND_INTERFACE_INFO( | |
89 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3G, | |
90 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
91 | IPHETH_USBINTF_PROTO) }, | |
92 | { USB_DEVICE_AND_INTERFACE_INFO( | |
93 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3GS, | |
94 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
95 | IPHETH_USBINTF_PROTO) }, | |
f95d76ab JA |
96 | { USB_DEVICE_AND_INTERFACE_INFO( |
97 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4, | |
98 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
99 | IPHETH_USBINTF_PROTO) }, | |
a19259c3 DG |
100 | { } |
101 | }; | |
102 | MODULE_DEVICE_TABLE(usb, ipheth_table); | |
103 | ||
104 | struct ipheth_device { | |
105 | struct usb_device *udev; | |
106 | struct usb_interface *intf; | |
107 | struct net_device *net; | |
108 | struct sk_buff *tx_skb; | |
109 | struct urb *tx_urb; | |
110 | struct urb *rx_urb; | |
111 | unsigned char *tx_buf; | |
112 | unsigned char *rx_buf; | |
113 | unsigned char *ctrl_buf; | |
114 | u8 bulk_in; | |
115 | u8 bulk_out; | |
116 | struct delayed_work carrier_work; | |
117 | }; | |
118 | ||
119 | static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags); | |
120 | ||
121 | static int ipheth_alloc_urbs(struct ipheth_device *iphone) | |
122 | { | |
123 | struct urb *tx_urb = NULL; | |
124 | struct urb *rx_urb = NULL; | |
125 | u8 *tx_buf = NULL; | |
126 | u8 *rx_buf = NULL; | |
127 | ||
128 | tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
129 | if (tx_urb == NULL) | |
d87ff58f | 130 | goto error_nomem; |
a19259c3 DG |
131 | |
132 | rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
133 | if (rx_urb == NULL) | |
d87ff58f | 134 | goto free_tx_urb; |
a19259c3 | 135 | |
997ea58e DM |
136 | tx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE, |
137 | GFP_KERNEL, &tx_urb->transfer_dma); | |
a19259c3 | 138 | if (tx_buf == NULL) |
d87ff58f | 139 | goto free_rx_urb; |
a19259c3 | 140 | |
997ea58e DM |
141 | rx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE, |
142 | GFP_KERNEL, &rx_urb->transfer_dma); | |
a19259c3 | 143 | if (rx_buf == NULL) |
d87ff58f | 144 | goto free_tx_buf; |
a19259c3 DG |
145 | |
146 | ||
147 | iphone->tx_urb = tx_urb; | |
148 | iphone->rx_urb = rx_urb; | |
149 | iphone->tx_buf = tx_buf; | |
150 | iphone->rx_buf = rx_buf; | |
151 | return 0; | |
152 | ||
d87ff58f | 153 | free_tx_buf: |
997ea58e DM |
154 | usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, tx_buf, |
155 | tx_urb->transfer_dma); | |
d87ff58f | 156 | free_rx_urb: |
a19259c3 | 157 | usb_free_urb(rx_urb); |
d87ff58f | 158 | free_tx_urb: |
a19259c3 | 159 | usb_free_urb(tx_urb); |
d87ff58f | 160 | error_nomem: |
a19259c3 DG |
161 | return -ENOMEM; |
162 | } | |
163 | ||
164 | static void ipheth_free_urbs(struct ipheth_device *iphone) | |
165 | { | |
997ea58e DM |
166 | usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->rx_buf, |
167 | iphone->rx_urb->transfer_dma); | |
168 | usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->tx_buf, | |
169 | iphone->tx_urb->transfer_dma); | |
a19259c3 DG |
170 | usb_free_urb(iphone->rx_urb); |
171 | usb_free_urb(iphone->tx_urb); | |
172 | } | |
173 | ||
174 | static void ipheth_kill_urbs(struct ipheth_device *dev) | |
175 | { | |
176 | usb_kill_urb(dev->tx_urb); | |
177 | usb_kill_urb(dev->rx_urb); | |
178 | } | |
179 | ||
180 | static void ipheth_rcvbulk_callback(struct urb *urb) | |
181 | { | |
182 | struct ipheth_device *dev; | |
183 | struct sk_buff *skb; | |
184 | int status; | |
185 | char *buf; | |
186 | int len; | |
187 | ||
188 | dev = urb->context; | |
189 | if (dev == NULL) | |
190 | return; | |
191 | ||
192 | status = urb->status; | |
193 | switch (status) { | |
194 | case -ENOENT: | |
195 | case -ECONNRESET: | |
196 | case -ESHUTDOWN: | |
197 | return; | |
198 | case 0: | |
199 | break; | |
200 | default: | |
c31fd6c2 | 201 | err("%s: urb status: %d", __func__, status); |
a19259c3 DG |
202 | return; |
203 | } | |
204 | ||
205 | len = urb->actual_length; | |
206 | buf = urb->transfer_buffer; | |
207 | ||
208 | skb = dev_alloc_skb(NET_IP_ALIGN + len); | |
209 | if (!skb) { | |
210 | err("%s: dev_alloc_skb: -ENOMEM", __func__); | |
211 | dev->net->stats.rx_dropped++; | |
212 | return; | |
213 | } | |
214 | ||
215 | skb_reserve(skb, NET_IP_ALIGN); | |
216 | memcpy(skb_put(skb, len), buf + NET_IP_ALIGN, len - NET_IP_ALIGN); | |
217 | skb->dev = dev->net; | |
218 | skb->protocol = eth_type_trans(skb, dev->net); | |
219 | ||
220 | dev->net->stats.rx_packets++; | |
221 | dev->net->stats.rx_bytes += len; | |
222 | ||
223 | netif_rx(skb); | |
224 | ipheth_rx_submit(dev, GFP_ATOMIC); | |
225 | } | |
226 | ||
227 | static void ipheth_sndbulk_callback(struct urb *urb) | |
228 | { | |
229 | struct ipheth_device *dev; | |
c31fd6c2 | 230 | int status = urb->status; |
a19259c3 DG |
231 | |
232 | dev = urb->context; | |
233 | if (dev == NULL) | |
234 | return; | |
235 | ||
c31fd6c2 ON |
236 | if (status != 0 && |
237 | status != -ENOENT && | |
238 | status != -ECONNRESET && | |
239 | status != -ESHUTDOWN) | |
240 | err("%s: urb status: %d", __func__, status); | |
a19259c3 DG |
241 | |
242 | dev_kfree_skb_irq(dev->tx_skb); | |
243 | netif_wake_queue(dev->net); | |
244 | } | |
245 | ||
246 | static int ipheth_carrier_set(struct ipheth_device *dev) | |
247 | { | |
248 | struct usb_device *udev = dev->udev; | |
249 | int retval; | |
250 | ||
251 | retval = usb_control_msg(udev, | |
252 | usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP), | |
253 | IPHETH_CMD_CARRIER_CHECK, /* request */ | |
254 | 0xc0, /* request type */ | |
255 | 0x00, /* value */ | |
256 | 0x02, /* index */ | |
257 | dev->ctrl_buf, IPHETH_CTRL_BUF_SIZE, | |
258 | IPHETH_CTRL_TIMEOUT); | |
259 | if (retval < 0) { | |
260 | err("%s: usb_control_msg: %d", __func__, retval); | |
261 | return retval; | |
262 | } | |
263 | ||
264 | if (dev->ctrl_buf[0] == IPHETH_CARRIER_ON) | |
265 | netif_carrier_on(dev->net); | |
266 | else | |
267 | netif_carrier_off(dev->net); | |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
272 | static void ipheth_carrier_check_work(struct work_struct *work) | |
273 | { | |
274 | struct ipheth_device *dev = container_of(work, struct ipheth_device, | |
275 | carrier_work.work); | |
276 | ||
277 | ipheth_carrier_set(dev); | |
278 | schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT); | |
279 | } | |
280 | ||
281 | static int ipheth_get_macaddr(struct ipheth_device *dev) | |
282 | { | |
283 | struct usb_device *udev = dev->udev; | |
284 | struct net_device *net = dev->net; | |
285 | int retval; | |
286 | ||
287 | retval = usb_control_msg(udev, | |
288 | usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP), | |
289 | IPHETH_CMD_GET_MACADDR, /* request */ | |
290 | 0xc0, /* request type */ | |
291 | 0x00, /* value */ | |
292 | 0x02, /* index */ | |
293 | dev->ctrl_buf, | |
294 | IPHETH_CTRL_BUF_SIZE, | |
295 | IPHETH_CTRL_TIMEOUT); | |
296 | if (retval < 0) { | |
297 | err("%s: usb_control_msg: %d", __func__, retval); | |
298 | } else if (retval < ETH_ALEN) { | |
299 | err("%s: usb_control_msg: short packet: %d bytes", | |
300 | __func__, retval); | |
301 | retval = -EINVAL; | |
302 | } else { | |
303 | memcpy(net->dev_addr, dev->ctrl_buf, ETH_ALEN); | |
304 | retval = 0; | |
305 | } | |
306 | ||
307 | return retval; | |
308 | } | |
309 | ||
310 | static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags) | |
311 | { | |
312 | struct usb_device *udev = dev->udev; | |
313 | int retval; | |
314 | ||
315 | usb_fill_bulk_urb(dev->rx_urb, udev, | |
316 | usb_rcvbulkpipe(udev, dev->bulk_in), | |
317 | dev->rx_buf, IPHETH_BUF_SIZE, | |
318 | ipheth_rcvbulk_callback, | |
319 | dev); | |
320 | dev->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
321 | ||
322 | retval = usb_submit_urb(dev->rx_urb, mem_flags); | |
323 | if (retval) | |
324 | err("%s: usb_submit_urb: %d", __func__, retval); | |
325 | return retval; | |
326 | } | |
327 | ||
328 | static int ipheth_open(struct net_device *net) | |
329 | { | |
330 | struct ipheth_device *dev = netdev_priv(net); | |
331 | struct usb_device *udev = dev->udev; | |
332 | int retval = 0; | |
333 | ||
334 | usb_set_interface(udev, IPHETH_INTFNUM, IPHETH_ALT_INTFNUM); | |
335 | ||
336 | retval = ipheth_carrier_set(dev); | |
337 | if (retval) | |
338 | return retval; | |
339 | ||
340 | retval = ipheth_rx_submit(dev, GFP_KERNEL); | |
341 | if (retval) | |
342 | return retval; | |
343 | ||
344 | schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT); | |
345 | netif_start_queue(net); | |
346 | return retval; | |
347 | } | |
348 | ||
349 | static int ipheth_close(struct net_device *net) | |
350 | { | |
351 | struct ipheth_device *dev = netdev_priv(net); | |
352 | ||
353 | cancel_delayed_work_sync(&dev->carrier_work); | |
354 | netif_stop_queue(net); | |
355 | return 0; | |
356 | } | |
357 | ||
358 | static int ipheth_tx(struct sk_buff *skb, struct net_device *net) | |
359 | { | |
360 | struct ipheth_device *dev = netdev_priv(net); | |
361 | struct usb_device *udev = dev->udev; | |
362 | int retval; | |
363 | ||
364 | /* Paranoid */ | |
365 | if (skb->len > IPHETH_BUF_SIZE) { | |
366 | WARN(1, "%s: skb too large: %d bytes", __func__, skb->len); | |
367 | dev->net->stats.tx_dropped++; | |
368 | dev_kfree_skb_irq(skb); | |
369 | return NETDEV_TX_OK; | |
370 | } | |
371 | ||
372 | memcpy(dev->tx_buf, skb->data, skb->len); | |
373 | if (skb->len < IPHETH_BUF_SIZE) | |
374 | memset(dev->tx_buf + skb->len, 0, IPHETH_BUF_SIZE - skb->len); | |
375 | ||
376 | usb_fill_bulk_urb(dev->tx_urb, udev, | |
377 | usb_sndbulkpipe(udev, dev->bulk_out), | |
378 | dev->tx_buf, IPHETH_BUF_SIZE, | |
379 | ipheth_sndbulk_callback, | |
380 | dev); | |
381 | dev->tx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
382 | ||
383 | retval = usb_submit_urb(dev->tx_urb, GFP_ATOMIC); | |
384 | if (retval) { | |
385 | err("%s: usb_submit_urb: %d", __func__, retval); | |
386 | dev->net->stats.tx_errors++; | |
387 | dev_kfree_skb_irq(skb); | |
388 | } else { | |
389 | dev->tx_skb = skb; | |
390 | ||
391 | dev->net->stats.tx_packets++; | |
392 | dev->net->stats.tx_bytes += skb->len; | |
393 | netif_stop_queue(net); | |
394 | } | |
395 | ||
396 | return NETDEV_TX_OK; | |
397 | } | |
398 | ||
399 | static void ipheth_tx_timeout(struct net_device *net) | |
400 | { | |
401 | struct ipheth_device *dev = netdev_priv(net); | |
402 | ||
403 | err("%s: TX timeout", __func__); | |
404 | dev->net->stats.tx_errors++; | |
405 | usb_unlink_urb(dev->tx_urb); | |
406 | } | |
407 | ||
408 | static struct net_device_stats *ipheth_stats(struct net_device *net) | |
409 | { | |
410 | struct ipheth_device *dev = netdev_priv(net); | |
411 | return &dev->net->stats; | |
412 | } | |
413 | ||
414 | static u32 ipheth_ethtool_op_get_link(struct net_device *net) | |
415 | { | |
416 | struct ipheth_device *dev = netdev_priv(net); | |
417 | return netif_carrier_ok(dev->net); | |
418 | } | |
419 | ||
420 | static struct ethtool_ops ops = { | |
421 | .get_link = ipheth_ethtool_op_get_link | |
422 | }; | |
423 | ||
424 | static const struct net_device_ops ipheth_netdev_ops = { | |
425 | .ndo_open = &ipheth_open, | |
426 | .ndo_stop = &ipheth_close, | |
427 | .ndo_start_xmit = &ipheth_tx, | |
428 | .ndo_tx_timeout = &ipheth_tx_timeout, | |
429 | .ndo_get_stats = &ipheth_stats, | |
430 | }; | |
431 | ||
432 | static struct device_type ipheth_type = { | |
433 | .name = "wwan", | |
434 | }; | |
435 | ||
436 | static int ipheth_probe(struct usb_interface *intf, | |
437 | const struct usb_device_id *id) | |
438 | { | |
439 | struct usb_device *udev = interface_to_usbdev(intf); | |
440 | struct usb_host_interface *hintf; | |
441 | struct usb_endpoint_descriptor *endp; | |
442 | struct ipheth_device *dev; | |
443 | struct net_device *netdev; | |
444 | int i; | |
445 | int retval; | |
446 | ||
447 | netdev = alloc_etherdev(sizeof(struct ipheth_device)); | |
448 | if (!netdev) | |
449 | return -ENOMEM; | |
450 | ||
451 | netdev->netdev_ops = &ipheth_netdev_ops; | |
452 | netdev->watchdog_timeo = IPHETH_TX_TIMEOUT; | |
453 | strcpy(netdev->name, "wwan%d"); | |
454 | ||
455 | dev = netdev_priv(netdev); | |
456 | dev->udev = udev; | |
457 | dev->net = netdev; | |
458 | dev->intf = intf; | |
459 | ||
460 | /* Set up endpoints */ | |
461 | hintf = usb_altnum_to_altsetting(intf, IPHETH_ALT_INTFNUM); | |
462 | if (hintf == NULL) { | |
463 | retval = -ENODEV; | |
464 | err("Unable to find alternate settings interface"); | |
465 | goto err_endpoints; | |
466 | } | |
467 | ||
468 | for (i = 0; i < hintf->desc.bNumEndpoints; i++) { | |
469 | endp = &hintf->endpoint[i].desc; | |
470 | if (usb_endpoint_is_bulk_in(endp)) | |
471 | dev->bulk_in = endp->bEndpointAddress; | |
472 | else if (usb_endpoint_is_bulk_out(endp)) | |
473 | dev->bulk_out = endp->bEndpointAddress; | |
474 | } | |
475 | if (!(dev->bulk_in && dev->bulk_out)) { | |
476 | retval = -ENODEV; | |
477 | err("Unable to find endpoints"); | |
478 | goto err_endpoints; | |
479 | } | |
480 | ||
481 | dev->ctrl_buf = kmalloc(IPHETH_CTRL_BUF_SIZE, GFP_KERNEL); | |
482 | if (dev->ctrl_buf == NULL) { | |
483 | retval = -ENOMEM; | |
484 | goto err_alloc_ctrl_buf; | |
485 | } | |
486 | ||
487 | retval = ipheth_get_macaddr(dev); | |
488 | if (retval) | |
489 | goto err_get_macaddr; | |
490 | ||
491 | INIT_DELAYED_WORK(&dev->carrier_work, ipheth_carrier_check_work); | |
492 | ||
493 | retval = ipheth_alloc_urbs(dev); | |
494 | if (retval) { | |
495 | err("error allocating urbs: %d", retval); | |
496 | goto err_alloc_urbs; | |
497 | } | |
498 | ||
499 | usb_set_intfdata(intf, dev); | |
500 | ||
501 | SET_NETDEV_DEV(netdev, &intf->dev); | |
502 | SET_ETHTOOL_OPS(netdev, &ops); | |
503 | SET_NETDEV_DEVTYPE(netdev, &ipheth_type); | |
504 | ||
505 | retval = register_netdev(netdev); | |
506 | if (retval) { | |
507 | err("error registering netdev: %d", retval); | |
508 | retval = -EIO; | |
509 | goto err_register_netdev; | |
510 | } | |
511 | ||
512 | dev_info(&intf->dev, "Apple iPhone USB Ethernet device attached\n"); | |
513 | return 0; | |
514 | ||
515 | err_register_netdev: | |
516 | ipheth_free_urbs(dev); | |
517 | err_alloc_urbs: | |
518 | err_get_macaddr: | |
519 | err_alloc_ctrl_buf: | |
520 | kfree(dev->ctrl_buf); | |
521 | err_endpoints: | |
522 | free_netdev(netdev); | |
523 | return retval; | |
524 | } | |
525 | ||
526 | static void ipheth_disconnect(struct usb_interface *intf) | |
527 | { | |
528 | struct ipheth_device *dev; | |
529 | ||
530 | dev = usb_get_intfdata(intf); | |
531 | if (dev != NULL) { | |
532 | unregister_netdev(dev->net); | |
533 | ipheth_kill_urbs(dev); | |
534 | ipheth_free_urbs(dev); | |
535 | kfree(dev->ctrl_buf); | |
536 | free_netdev(dev->net); | |
537 | } | |
538 | usb_set_intfdata(intf, NULL); | |
539 | dev_info(&intf->dev, "Apple iPhone USB Ethernet now disconnected\n"); | |
540 | } | |
541 | ||
542 | static struct usb_driver ipheth_driver = { | |
543 | .name = "ipheth", | |
544 | .probe = ipheth_probe, | |
545 | .disconnect = ipheth_disconnect, | |
546 | .id_table = ipheth_table, | |
547 | }; | |
548 | ||
549 | static int __init ipheth_init(void) | |
550 | { | |
551 | int retval; | |
552 | ||
553 | retval = usb_register(&ipheth_driver); | |
554 | if (retval) { | |
555 | err("usb_register failed: %d", retval); | |
556 | return retval; | |
557 | } | |
558 | return 0; | |
559 | } | |
560 | ||
561 | static void __exit ipheth_exit(void) | |
562 | { | |
563 | usb_deregister(&ipheth_driver); | |
564 | } | |
565 | ||
566 | module_init(ipheth_init); | |
567 | module_exit(ipheth_exit); | |
568 | ||
569 | MODULE_AUTHOR("Diego Giagio <diego@giagio.com>"); | |
570 | MODULE_DESCRIPTION("Apple iPhone USB Ethernet driver"); | |
571 | MODULE_LICENSE("Dual BSD/GPL"); |