Commit | Line | Data |
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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 |
02009afc | 62 | #define USB_PRODUCT_IPHONE_4_VZW 0x129c |
72ba009b | 63 | #define USB_PRODUCT_IPHONE_4S 0x12a0 |
a19259c3 DG |
64 | |
65 | #define IPHETH_USBINTF_CLASS 255 | |
66 | #define IPHETH_USBINTF_SUBCLASS 253 | |
67 | #define IPHETH_USBINTF_PROTO 1 | |
68 | ||
69 | #define IPHETH_BUF_SIZE 1516 | |
9c412942 | 70 | #define IPHETH_IP_ALIGN 2 /* padding at front of URB */ |
a19259c3 DG |
71 | #define IPHETH_TX_TIMEOUT (5 * HZ) |
72 | ||
73 | #define IPHETH_INTFNUM 2 | |
74 | #define IPHETH_ALT_INTFNUM 1 | |
75 | ||
76 | #define IPHETH_CTRL_ENDP 0x00 | |
77 | #define IPHETH_CTRL_BUF_SIZE 0x40 | |
78 | #define IPHETH_CTRL_TIMEOUT (5 * HZ) | |
79 | ||
80 | #define IPHETH_CMD_GET_MACADDR 0x00 | |
81 | #define IPHETH_CMD_CARRIER_CHECK 0x45 | |
82 | ||
83 | #define IPHETH_CARRIER_CHECK_TIMEOUT round_jiffies_relative(1 * HZ) | |
84 | #define IPHETH_CARRIER_ON 0x04 | |
85 | ||
86 | static struct usb_device_id ipheth_table[] = { | |
87 | { USB_DEVICE_AND_INTERFACE_INFO( | |
88 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE, | |
89 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
90 | IPHETH_USBINTF_PROTO) }, | |
91 | { USB_DEVICE_AND_INTERFACE_INFO( | |
92 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3G, | |
93 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
94 | IPHETH_USBINTF_PROTO) }, | |
95 | { USB_DEVICE_AND_INTERFACE_INFO( | |
96 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3GS, | |
97 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
98 | IPHETH_USBINTF_PROTO) }, | |
f95d76ab JA |
99 | { USB_DEVICE_AND_INTERFACE_INFO( |
100 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4, | |
101 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
102 | IPHETH_USBINTF_PROTO) }, | |
02009afc KS |
103 | { USB_DEVICE_AND_INTERFACE_INFO( |
104 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4_VZW, | |
105 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
106 | IPHETH_USBINTF_PROTO) }, | |
72ba009b TG |
107 | { USB_DEVICE_AND_INTERFACE_INFO( |
108 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4S, | |
109 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
110 | IPHETH_USBINTF_PROTO) }, | |
a19259c3 DG |
111 | { } |
112 | }; | |
113 | MODULE_DEVICE_TABLE(usb, ipheth_table); | |
114 | ||
115 | struct ipheth_device { | |
116 | struct usb_device *udev; | |
117 | struct usb_interface *intf; | |
118 | struct net_device *net; | |
119 | struct sk_buff *tx_skb; | |
120 | struct urb *tx_urb; | |
121 | struct urb *rx_urb; | |
122 | unsigned char *tx_buf; | |
123 | unsigned char *rx_buf; | |
124 | unsigned char *ctrl_buf; | |
125 | u8 bulk_in; | |
126 | u8 bulk_out; | |
127 | struct delayed_work carrier_work; | |
128 | }; | |
129 | ||
130 | static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags); | |
131 | ||
132 | static int ipheth_alloc_urbs(struct ipheth_device *iphone) | |
133 | { | |
134 | struct urb *tx_urb = NULL; | |
135 | struct urb *rx_urb = NULL; | |
136 | u8 *tx_buf = NULL; | |
137 | u8 *rx_buf = NULL; | |
138 | ||
139 | tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
140 | if (tx_urb == NULL) | |
d87ff58f | 141 | goto error_nomem; |
a19259c3 DG |
142 | |
143 | rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
144 | if (rx_urb == NULL) | |
d87ff58f | 145 | goto free_tx_urb; |
a19259c3 | 146 | |
997ea58e DM |
147 | tx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE, |
148 | GFP_KERNEL, &tx_urb->transfer_dma); | |
a19259c3 | 149 | if (tx_buf == NULL) |
d87ff58f | 150 | goto free_rx_urb; |
a19259c3 | 151 | |
997ea58e DM |
152 | rx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE, |
153 | GFP_KERNEL, &rx_urb->transfer_dma); | |
a19259c3 | 154 | if (rx_buf == NULL) |
d87ff58f | 155 | goto free_tx_buf; |
a19259c3 DG |
156 | |
157 | ||
158 | iphone->tx_urb = tx_urb; | |
159 | iphone->rx_urb = rx_urb; | |
160 | iphone->tx_buf = tx_buf; | |
161 | iphone->rx_buf = rx_buf; | |
162 | return 0; | |
163 | ||
d87ff58f | 164 | free_tx_buf: |
997ea58e DM |
165 | usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, tx_buf, |
166 | tx_urb->transfer_dma); | |
d87ff58f | 167 | free_rx_urb: |
a19259c3 | 168 | usb_free_urb(rx_urb); |
d87ff58f | 169 | free_tx_urb: |
a19259c3 | 170 | usb_free_urb(tx_urb); |
d87ff58f | 171 | error_nomem: |
a19259c3 DG |
172 | return -ENOMEM; |
173 | } | |
174 | ||
175 | static void ipheth_free_urbs(struct ipheth_device *iphone) | |
176 | { | |
997ea58e DM |
177 | usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->rx_buf, |
178 | iphone->rx_urb->transfer_dma); | |
179 | usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->tx_buf, | |
180 | iphone->tx_urb->transfer_dma); | |
a19259c3 DG |
181 | usb_free_urb(iphone->rx_urb); |
182 | usb_free_urb(iphone->tx_urb); | |
183 | } | |
184 | ||
185 | static void ipheth_kill_urbs(struct ipheth_device *dev) | |
186 | { | |
187 | usb_kill_urb(dev->tx_urb); | |
188 | usb_kill_urb(dev->rx_urb); | |
189 | } | |
190 | ||
191 | static void ipheth_rcvbulk_callback(struct urb *urb) | |
192 | { | |
193 | struct ipheth_device *dev; | |
194 | struct sk_buff *skb; | |
195 | int status; | |
196 | char *buf; | |
197 | int len; | |
198 | ||
199 | dev = urb->context; | |
200 | if (dev == NULL) | |
201 | return; | |
202 | ||
203 | status = urb->status; | |
204 | switch (status) { | |
205 | case -ENOENT: | |
206 | case -ECONNRESET: | |
207 | case -ESHUTDOWN: | |
208 | return; | |
209 | case 0: | |
210 | break; | |
211 | default: | |
c31fd6c2 | 212 | err("%s: urb status: %d", __func__, status); |
a19259c3 DG |
213 | return; |
214 | } | |
215 | ||
9c412942 BH |
216 | if (urb->actual_length <= IPHETH_IP_ALIGN) { |
217 | dev->net->stats.rx_length_errors++; | |
218 | return; | |
219 | } | |
220 | len = urb->actual_length - IPHETH_IP_ALIGN; | |
221 | buf = urb->transfer_buffer + IPHETH_IP_ALIGN; | |
a19259c3 | 222 | |
9c412942 | 223 | skb = dev_alloc_skb(len); |
a19259c3 DG |
224 | if (!skb) { |
225 | err("%s: dev_alloc_skb: -ENOMEM", __func__); | |
226 | dev->net->stats.rx_dropped++; | |
227 | return; | |
228 | } | |
229 | ||
9c412942 | 230 | memcpy(skb_put(skb, len), buf, len); |
a19259c3 DG |
231 | skb->dev = dev->net; |
232 | skb->protocol = eth_type_trans(skb, dev->net); | |
233 | ||
234 | dev->net->stats.rx_packets++; | |
235 | dev->net->stats.rx_bytes += len; | |
236 | ||
237 | netif_rx(skb); | |
238 | ipheth_rx_submit(dev, GFP_ATOMIC); | |
239 | } | |
240 | ||
241 | static void ipheth_sndbulk_callback(struct urb *urb) | |
242 | { | |
243 | struct ipheth_device *dev; | |
c31fd6c2 | 244 | int status = urb->status; |
a19259c3 DG |
245 | |
246 | dev = urb->context; | |
247 | if (dev == NULL) | |
248 | return; | |
249 | ||
c31fd6c2 ON |
250 | if (status != 0 && |
251 | status != -ENOENT && | |
252 | status != -ECONNRESET && | |
253 | status != -ESHUTDOWN) | |
254 | err("%s: urb status: %d", __func__, status); | |
a19259c3 DG |
255 | |
256 | dev_kfree_skb_irq(dev->tx_skb); | |
257 | netif_wake_queue(dev->net); | |
258 | } | |
259 | ||
260 | static int ipheth_carrier_set(struct ipheth_device *dev) | |
261 | { | |
262 | struct usb_device *udev = dev->udev; | |
263 | int retval; | |
264 | ||
265 | retval = usb_control_msg(udev, | |
266 | usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP), | |
267 | IPHETH_CMD_CARRIER_CHECK, /* request */ | |
268 | 0xc0, /* request type */ | |
269 | 0x00, /* value */ | |
270 | 0x02, /* index */ | |
271 | dev->ctrl_buf, IPHETH_CTRL_BUF_SIZE, | |
272 | IPHETH_CTRL_TIMEOUT); | |
273 | if (retval < 0) { | |
274 | err("%s: usb_control_msg: %d", __func__, retval); | |
275 | return retval; | |
276 | } | |
277 | ||
278 | if (dev->ctrl_buf[0] == IPHETH_CARRIER_ON) | |
279 | netif_carrier_on(dev->net); | |
280 | else | |
281 | netif_carrier_off(dev->net); | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | static void ipheth_carrier_check_work(struct work_struct *work) | |
287 | { | |
288 | struct ipheth_device *dev = container_of(work, struct ipheth_device, | |
289 | carrier_work.work); | |
290 | ||
291 | ipheth_carrier_set(dev); | |
292 | schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT); | |
293 | } | |
294 | ||
295 | static int ipheth_get_macaddr(struct ipheth_device *dev) | |
296 | { | |
297 | struct usb_device *udev = dev->udev; | |
298 | struct net_device *net = dev->net; | |
299 | int retval; | |
300 | ||
301 | retval = usb_control_msg(udev, | |
302 | usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP), | |
303 | IPHETH_CMD_GET_MACADDR, /* request */ | |
304 | 0xc0, /* request type */ | |
305 | 0x00, /* value */ | |
306 | 0x02, /* index */ | |
307 | dev->ctrl_buf, | |
308 | IPHETH_CTRL_BUF_SIZE, | |
309 | IPHETH_CTRL_TIMEOUT); | |
310 | if (retval < 0) { | |
311 | err("%s: usb_control_msg: %d", __func__, retval); | |
312 | } else if (retval < ETH_ALEN) { | |
313 | err("%s: usb_control_msg: short packet: %d bytes", | |
314 | __func__, retval); | |
315 | retval = -EINVAL; | |
316 | } else { | |
317 | memcpy(net->dev_addr, dev->ctrl_buf, ETH_ALEN); | |
318 | retval = 0; | |
319 | } | |
320 | ||
321 | return retval; | |
322 | } | |
323 | ||
324 | static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags) | |
325 | { | |
326 | struct usb_device *udev = dev->udev; | |
327 | int retval; | |
328 | ||
329 | usb_fill_bulk_urb(dev->rx_urb, udev, | |
330 | usb_rcvbulkpipe(udev, dev->bulk_in), | |
331 | dev->rx_buf, IPHETH_BUF_SIZE, | |
332 | ipheth_rcvbulk_callback, | |
333 | dev); | |
334 | dev->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
335 | ||
336 | retval = usb_submit_urb(dev->rx_urb, mem_flags); | |
337 | if (retval) | |
338 | err("%s: usb_submit_urb: %d", __func__, retval); | |
339 | return retval; | |
340 | } | |
341 | ||
342 | static int ipheth_open(struct net_device *net) | |
343 | { | |
344 | struct ipheth_device *dev = netdev_priv(net); | |
345 | struct usb_device *udev = dev->udev; | |
346 | int retval = 0; | |
347 | ||
348 | usb_set_interface(udev, IPHETH_INTFNUM, IPHETH_ALT_INTFNUM); | |
349 | ||
350 | retval = ipheth_carrier_set(dev); | |
351 | if (retval) | |
352 | return retval; | |
353 | ||
354 | retval = ipheth_rx_submit(dev, GFP_KERNEL); | |
355 | if (retval) | |
356 | return retval; | |
357 | ||
358 | schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT); | |
359 | netif_start_queue(net); | |
360 | return retval; | |
361 | } | |
362 | ||
363 | static int ipheth_close(struct net_device *net) | |
364 | { | |
365 | struct ipheth_device *dev = netdev_priv(net); | |
366 | ||
367 | cancel_delayed_work_sync(&dev->carrier_work); | |
368 | netif_stop_queue(net); | |
369 | return 0; | |
370 | } | |
371 | ||
372 | static int ipheth_tx(struct sk_buff *skb, struct net_device *net) | |
373 | { | |
374 | struct ipheth_device *dev = netdev_priv(net); | |
375 | struct usb_device *udev = dev->udev; | |
376 | int retval; | |
377 | ||
378 | /* Paranoid */ | |
379 | if (skb->len > IPHETH_BUF_SIZE) { | |
9c413ed5 | 380 | WARN(1, "%s: skb too large: %d bytes\n", __func__, skb->len); |
a19259c3 DG |
381 | dev->net->stats.tx_dropped++; |
382 | dev_kfree_skb_irq(skb); | |
383 | return NETDEV_TX_OK; | |
384 | } | |
385 | ||
386 | memcpy(dev->tx_buf, skb->data, skb->len); | |
387 | if (skb->len < IPHETH_BUF_SIZE) | |
388 | memset(dev->tx_buf + skb->len, 0, IPHETH_BUF_SIZE - skb->len); | |
389 | ||
390 | usb_fill_bulk_urb(dev->tx_urb, udev, | |
391 | usb_sndbulkpipe(udev, dev->bulk_out), | |
392 | dev->tx_buf, IPHETH_BUF_SIZE, | |
393 | ipheth_sndbulk_callback, | |
394 | dev); | |
395 | dev->tx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
396 | ||
397 | retval = usb_submit_urb(dev->tx_urb, GFP_ATOMIC); | |
398 | if (retval) { | |
399 | err("%s: usb_submit_urb: %d", __func__, retval); | |
400 | dev->net->stats.tx_errors++; | |
401 | dev_kfree_skb_irq(skb); | |
402 | } else { | |
403 | dev->tx_skb = skb; | |
404 | ||
405 | dev->net->stats.tx_packets++; | |
406 | dev->net->stats.tx_bytes += skb->len; | |
407 | netif_stop_queue(net); | |
408 | } | |
409 | ||
410 | return NETDEV_TX_OK; | |
411 | } | |
412 | ||
413 | static void ipheth_tx_timeout(struct net_device *net) | |
414 | { | |
415 | struct ipheth_device *dev = netdev_priv(net); | |
416 | ||
417 | err("%s: TX timeout", __func__); | |
418 | dev->net->stats.tx_errors++; | |
419 | usb_unlink_urb(dev->tx_urb); | |
420 | } | |
421 | ||
a19259c3 DG |
422 | static u32 ipheth_ethtool_op_get_link(struct net_device *net) |
423 | { | |
424 | struct ipheth_device *dev = netdev_priv(net); | |
425 | return netif_carrier_ok(dev->net); | |
426 | } | |
427 | ||
bc689c97 | 428 | static const struct ethtool_ops ops = { |
a19259c3 DG |
429 | .get_link = ipheth_ethtool_op_get_link |
430 | }; | |
431 | ||
432 | static const struct net_device_ops ipheth_netdev_ops = { | |
8ef207d6 | 433 | .ndo_open = ipheth_open, |
434 | .ndo_stop = ipheth_close, | |
435 | .ndo_start_xmit = ipheth_tx, | |
436 | .ndo_tx_timeout = ipheth_tx_timeout, | |
a19259c3 DG |
437 | }; |
438 | ||
a19259c3 DG |
439 | static int ipheth_probe(struct usb_interface *intf, |
440 | const struct usb_device_id *id) | |
441 | { | |
442 | struct usb_device *udev = interface_to_usbdev(intf); | |
443 | struct usb_host_interface *hintf; | |
444 | struct usb_endpoint_descriptor *endp; | |
445 | struct ipheth_device *dev; | |
446 | struct net_device *netdev; | |
447 | int i; | |
448 | int retval; | |
449 | ||
450 | netdev = alloc_etherdev(sizeof(struct ipheth_device)); | |
451 | if (!netdev) | |
452 | return -ENOMEM; | |
453 | ||
454 | netdev->netdev_ops = &ipheth_netdev_ops; | |
455 | netdev->watchdog_timeo = IPHETH_TX_TIMEOUT; | |
c9cedbba | 456 | strcpy(netdev->name, "eth%d"); |
a19259c3 DG |
457 | |
458 | dev = netdev_priv(netdev); | |
459 | dev->udev = udev; | |
460 | dev->net = netdev; | |
461 | dev->intf = intf; | |
462 | ||
463 | /* Set up endpoints */ | |
464 | hintf = usb_altnum_to_altsetting(intf, IPHETH_ALT_INTFNUM); | |
465 | if (hintf == NULL) { | |
466 | retval = -ENODEV; | |
467 | err("Unable to find alternate settings interface"); | |
468 | goto err_endpoints; | |
469 | } | |
470 | ||
471 | for (i = 0; i < hintf->desc.bNumEndpoints; i++) { | |
472 | endp = &hintf->endpoint[i].desc; | |
473 | if (usb_endpoint_is_bulk_in(endp)) | |
474 | dev->bulk_in = endp->bEndpointAddress; | |
475 | else if (usb_endpoint_is_bulk_out(endp)) | |
476 | dev->bulk_out = endp->bEndpointAddress; | |
477 | } | |
478 | if (!(dev->bulk_in && dev->bulk_out)) { | |
479 | retval = -ENODEV; | |
480 | err("Unable to find endpoints"); | |
481 | goto err_endpoints; | |
482 | } | |
483 | ||
484 | dev->ctrl_buf = kmalloc(IPHETH_CTRL_BUF_SIZE, GFP_KERNEL); | |
485 | if (dev->ctrl_buf == NULL) { | |
486 | retval = -ENOMEM; | |
487 | goto err_alloc_ctrl_buf; | |
488 | } | |
489 | ||
490 | retval = ipheth_get_macaddr(dev); | |
491 | if (retval) | |
492 | goto err_get_macaddr; | |
493 | ||
494 | INIT_DELAYED_WORK(&dev->carrier_work, ipheth_carrier_check_work); | |
495 | ||
496 | retval = ipheth_alloc_urbs(dev); | |
497 | if (retval) { | |
498 | err("error allocating urbs: %d", retval); | |
499 | goto err_alloc_urbs; | |
500 | } | |
501 | ||
502 | usb_set_intfdata(intf, dev); | |
503 | ||
504 | SET_NETDEV_DEV(netdev, &intf->dev); | |
505 | SET_ETHTOOL_OPS(netdev, &ops); | |
a19259c3 DG |
506 | |
507 | retval = register_netdev(netdev); | |
508 | if (retval) { | |
509 | err("error registering netdev: %d", retval); | |
510 | retval = -EIO; | |
511 | goto err_register_netdev; | |
512 | } | |
513 | ||
514 | dev_info(&intf->dev, "Apple iPhone USB Ethernet device attached\n"); | |
515 | return 0; | |
516 | ||
517 | err_register_netdev: | |
518 | ipheth_free_urbs(dev); | |
519 | err_alloc_urbs: | |
520 | err_get_macaddr: | |
521 | err_alloc_ctrl_buf: | |
522 | kfree(dev->ctrl_buf); | |
523 | err_endpoints: | |
524 | free_netdev(netdev); | |
525 | return retval; | |
526 | } | |
527 | ||
528 | static void ipheth_disconnect(struct usb_interface *intf) | |
529 | { | |
530 | struct ipheth_device *dev; | |
531 | ||
532 | dev = usb_get_intfdata(intf); | |
533 | if (dev != NULL) { | |
534 | unregister_netdev(dev->net); | |
535 | ipheth_kill_urbs(dev); | |
536 | ipheth_free_urbs(dev); | |
537 | kfree(dev->ctrl_buf); | |
538 | free_netdev(dev->net); | |
539 | } | |
540 | usb_set_intfdata(intf, NULL); | |
541 | dev_info(&intf->dev, "Apple iPhone USB Ethernet now disconnected\n"); | |
542 | } | |
543 | ||
544 | static struct usb_driver ipheth_driver = { | |
545 | .name = "ipheth", | |
546 | .probe = ipheth_probe, | |
547 | .disconnect = ipheth_disconnect, | |
548 | .id_table = ipheth_table, | |
549 | }; | |
550 | ||
d632eb1b | 551 | module_usb_driver(ipheth_driver); |
a19259c3 DG |
552 | |
553 | MODULE_AUTHOR("Diego Giagio <diego@giagio.com>"); | |
554 | MODULE_DESCRIPTION("Apple iPhone USB Ethernet driver"); | |
555 | MODULE_LICENSE("Dual BSD/GPL"); |