Pileus Git - ~andy/linux/blob - drivers/net/usb/ipheth.c

   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
  61 #define USB_PRODUCT_IPHONE_4    0x1297
  62 #define USB_PRODUCT_IPAD 0x129a
  63 #define USB_PRODUCT_IPHONE_4_VZW 0x129c
  64 #define USB_PRODUCT_IPHONE_4S   0x12a0
  65 #define USB_PRODUCT_IPHONE_5    0x12a8
  66
  67 #define IPHETH_USBINTF_CLASS    255
  68 #define IPHETH_USBINTF_SUBCLASS 253
  69 #define IPHETH_USBINTF_PROTO    1
  70
  71 #define IPHETH_BUF_SIZE         1516
  72 #define IPHETH_IP_ALIGN         2       /* padding at front of URB */
  73 #define IPHETH_TX_TIMEOUT       (5 * HZ)
  74
  75 #define IPHETH_INTFNUM          2
  76 #define IPHETH_ALT_INTFNUM      1
  77
  78 #define IPHETH_CTRL_ENDP        0x00
  79 #define IPHETH_CTRL_BUF_SIZE    0x40
  80 #define IPHETH_CTRL_TIMEOUT     (5 * HZ)
  81
  82 #define IPHETH_CMD_GET_MACADDR   0x00
  83 #define IPHETH_CMD_CARRIER_CHECK 0x45
  84
  85 #define IPHETH_CARRIER_CHECK_TIMEOUT round_jiffies_relative(1 * HZ)
  86 #define IPHETH_CARRIER_ON       0x04
  87
  88 static struct usb_device_id ipheth_table[] = {
  89         { USB_DEVICE_AND_INTERFACE_INFO(
  90                 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE,
  91                 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
  92                 IPHETH_USBINTF_PROTO) },
  93         { USB_DEVICE_AND_INTERFACE_INFO(
  94                 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3G,
  95                 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
  96                 IPHETH_USBINTF_PROTO) },
  97         { USB_DEVICE_AND_INTERFACE_INFO(
  98                 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3GS,
  99                 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
 100                 IPHETH_USBINTF_PROTO) },
 101         { USB_DEVICE_AND_INTERFACE_INFO(
 102                 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4,
 103                 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
 104                 IPHETH_USBINTF_PROTO) },
 105         { USB_DEVICE_AND_INTERFACE_INFO(
 106                 USB_VENDOR_APPLE, USB_PRODUCT_IPAD,
 107                 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
 108                 IPHETH_USBINTF_PROTO) },
 109         { USB_DEVICE_AND_INTERFACE_INFO(
 110                 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4_VZW,
 111                 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
 112                 IPHETH_USBINTF_PROTO) },
 113         { USB_DEVICE_AND_INTERFACE_INFO(
 114                 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4S,
 115                 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
 116                 IPHETH_USBINTF_PROTO) },
 117         { USB_DEVICE_AND_INTERFACE_INFO(
 118                 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_5,
 119                 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
 120                 IPHETH_USBINTF_PROTO) },
 121         { }
 122 };
 123 MODULE_DEVICE_TABLE(usb, ipheth_table);
 124
 125 struct ipheth_device {
 126         struct usb_device *udev;
 127         struct usb_interface *intf;
 128         struct net_device *net;
 129         struct sk_buff *tx_skb;
 130         struct urb *tx_urb;
 131         struct urb *rx_urb;
 132         unsigned char *tx_buf;
 133         unsigned char *rx_buf;
 134         unsigned char *ctrl_buf;
 135         u8 bulk_in;
 136         u8 bulk_out;
 137         struct delayed_work carrier_work;
 138 };
 139
 140 static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags);
 141
 142 static int ipheth_alloc_urbs(struct ipheth_device *iphone)
 143 {
 144         struct urb *tx_urb = NULL;
 145         struct urb *rx_urb = NULL;
 146         u8 *tx_buf = NULL;
 147         u8 *rx_buf = NULL;
 148
 149         tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 150         if (tx_urb == NULL)
 151                 goto error_nomem;
 152
 153         rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 154         if (rx_urb == NULL)
 155                 goto free_tx_urb;
 156
 157         tx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE,
 158                                     GFP_KERNEL, &tx_urb->transfer_dma);
 159         if (tx_buf == NULL)
 160                 goto free_rx_urb;
 161
 162         rx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE,
 163                                     GFP_KERNEL, &rx_urb->transfer_dma);
 164         if (rx_buf == NULL)
 165                 goto free_tx_buf;
 166
 167
 168         iphone->tx_urb = tx_urb;
 169         iphone->rx_urb = rx_urb;
 170         iphone->tx_buf = tx_buf;
 171         iphone->rx_buf = rx_buf;
 172         return 0;
 173
 174 free_tx_buf:
 175         usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, tx_buf,
 176                           tx_urb->transfer_dma);
 177 free_rx_urb:
 178         usb_free_urb(rx_urb);
 179 free_tx_urb:
 180         usb_free_urb(tx_urb);
 181 error_nomem:
 182         return -ENOMEM;
 183 }
 184
 185 static void ipheth_free_urbs(struct ipheth_device *iphone)
 186 {
 187         usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->rx_buf,
 188                           iphone->rx_urb->transfer_dma);
 189         usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->tx_buf,
 190                           iphone->tx_urb->transfer_dma);
 191         usb_free_urb(iphone->rx_urb);
 192         usb_free_urb(iphone->tx_urb);
 193 }
 194
 195 static void ipheth_kill_urbs(struct ipheth_device *dev)
 196 {
 197         usb_kill_urb(dev->tx_urb);
 198         usb_kill_urb(dev->rx_urb);
 199 }
 200
 201 static void ipheth_rcvbulk_callback(struct urb *urb)
 202 {
 203         struct ipheth_device *dev;
 204         struct sk_buff *skb;
 205         int status;
 206         char *buf;
 207         int len;
 208
 209         dev = urb->context;
 210         if (dev == NULL)
 211                 return;
 212
 213         status = urb->status;
 214         switch (status) {
 215         case -ENOENT:
 216         case -ECONNRESET:
 217         case -ESHUTDOWN:
 218                 return;
 219         case 0:
 220                 break;
 221         default:
 222                 dev_err(&dev->intf->dev, "%s: urb status: %d\n",
 223                         __func__, status);
 224                 return;
 225         }
 226
 227         if (urb->actual_length <= IPHETH_IP_ALIGN) {
 228                 dev->net->stats.rx_length_errors++;
 229                 return;
 230         }
 231         len = urb->actual_length - IPHETH_IP_ALIGN;
 232         buf = urb->transfer_buffer + IPHETH_IP_ALIGN;
 233
 234         skb = dev_alloc_skb(len);
 235         if (!skb) {
 236                 dev_err(&dev->intf->dev, "%s: dev_alloc_skb: -ENOMEM\n",
 237                         __func__);
 238                 dev->net->stats.rx_dropped++;
 239                 return;
 240         }
 241
 242         memcpy(skb_put(skb, len), buf, len);
 243         skb->dev = dev->net;
 244         skb->protocol = eth_type_trans(skb, dev->net);
 245
 246         dev->net->stats.rx_packets++;
 247         dev->net->stats.rx_bytes += len;
 248
 249         netif_rx(skb);
 250         ipheth_rx_submit(dev, GFP_ATOMIC);
 251 }
 252
 253 static void ipheth_sndbulk_callback(struct urb *urb)
 254 {
 255         struct ipheth_device *dev;
 256         int status = urb->status;
 257
 258         dev = urb->context;
 259         if (dev == NULL)
 260                 return;
 261
 262         if (status != 0 &&
 263             status != -ENOENT &&
 264             status != -ECONNRESET &&
 265             status != -ESHUTDOWN)
 266                 dev_err(&dev->intf->dev, "%s: urb status: %d\n",
 267                 __func__, status);
 268
 269         dev_kfree_skb_irq(dev->tx_skb);
 270         netif_wake_queue(dev->net);
 271 }
 272
 273 static int ipheth_carrier_set(struct ipheth_device *dev)
 274 {
 275         struct usb_device *udev = dev->udev;
 276         int retval;
 277
 278         retval = usb_control_msg(udev,
 279                         usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP),
 280                         IPHETH_CMD_CARRIER_CHECK, /* request */
 281                         0xc0, /* request type */
 282                         0x00, /* value */
 283                         0x02, /* index */
 284                         dev->ctrl_buf, IPHETH_CTRL_BUF_SIZE,
 285                         IPHETH_CTRL_TIMEOUT);
 286         if (retval < 0) {
 287                 dev_err(&dev->intf->dev, "%s: usb_control_msg: %d\n",
 288                         __func__, retval);
 289                 return retval;
 290         }
 291
 292         if (dev->ctrl_buf[0] == IPHETH_CARRIER_ON)
 293                 netif_carrier_on(dev->net);
 294         else
 295                 netif_carrier_off(dev->net);
 296
 297         return 0;
 298 }
 299
 300 static void ipheth_carrier_check_work(struct work_struct *work)
 301 {
 302         struct ipheth_device *dev = container_of(work, struct ipheth_device,
 303                                                  carrier_work.work);
 304
 305         ipheth_carrier_set(dev);
 306         schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT);
 307 }
 308
 309 static int ipheth_get_macaddr(struct ipheth_device *dev)
 310 {
 311         struct usb_device *udev = dev->udev;
 312         struct net_device *net = dev->net;
 313         int retval;
 314
 315         retval = usb_control_msg(udev,
 316                                  usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP),
 317                                  IPHETH_CMD_GET_MACADDR, /* request */
 318                                  0xc0, /* request type */
 319                                  0x00, /* value */
 320                                  0x02, /* index */
 321                                  dev->ctrl_buf,
 322                                  IPHETH_CTRL_BUF_SIZE,
 323                                  IPHETH_CTRL_TIMEOUT);
 324         if (retval < 0) {
 325                 dev_err(&dev->intf->dev, "%s: usb_control_msg: %d\n",
 326                         __func__, retval);
 327         } else if (retval < ETH_ALEN) {
 328                 dev_err(&dev->intf->dev,
 329                         "%s: usb_control_msg: short packet: %d bytes\n",
 330                         __func__, retval);
 331                 retval = -EINVAL;
 332         } else {
 333                 memcpy(net->dev_addr, dev->ctrl_buf, ETH_ALEN);
 334                 retval = 0;
 335         }
 336
 337         return retval;
 338 }
 339
 340 static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags)
 341 {
 342         struct usb_device *udev = dev->udev;
 343         int retval;
 344
 345         usb_fill_bulk_urb(dev->rx_urb, udev,
 346                           usb_rcvbulkpipe(udev, dev->bulk_in),
 347                           dev->rx_buf, IPHETH_BUF_SIZE,
 348                           ipheth_rcvbulk_callback,
 349                           dev);
 350         dev->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 351
 352         retval = usb_submit_urb(dev->rx_urb, mem_flags);
 353         if (retval)
 354                 dev_err(&dev->intf->dev, "%s: usb_submit_urb: %d\n",
 355                         __func__, retval);
 356         return retval;
 357 }
 358
 359 static int ipheth_open(struct net_device *net)
 360 {
 361         struct ipheth_device *dev = netdev_priv(net);
 362         struct usb_device *udev = dev->udev;
 363         int retval = 0;
 364
 365         usb_set_interface(udev, IPHETH_INTFNUM, IPHETH_ALT_INTFNUM);
 366
 367         retval = ipheth_carrier_set(dev);
 368         if (retval)
 369                 return retval;
 370
 371         retval = ipheth_rx_submit(dev, GFP_KERNEL);
 372         if (retval)
 373                 return retval;
 374
 375         schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT);
 376         netif_start_queue(net);
 377         return retval;
 378 }
 379
 380 static int ipheth_close(struct net_device *net)
 381 {
 382         struct ipheth_device *dev = netdev_priv(net);
 383
 384         cancel_delayed_work_sync(&dev->carrier_work);
 385         netif_stop_queue(net);
 386         return 0;
 387 }
 388
 389 static int ipheth_tx(struct sk_buff *skb, struct net_device *net)
 390 {
 391         struct ipheth_device *dev = netdev_priv(net);
 392         struct usb_device *udev = dev->udev;
 393         int retval;
 394
 395         /* Paranoid */
 396         if (skb->len > IPHETH_BUF_SIZE) {
 397                 WARN(1, "%s: skb too large: %d bytes\n", __func__, skb->len);
 398                 dev->net->stats.tx_dropped++;
 399                 dev_kfree_skb_irq(skb);
 400                 return NETDEV_TX_OK;
 401         }
 402
 403         memcpy(dev->tx_buf, skb->data, skb->len);
 404         if (skb->len < IPHETH_BUF_SIZE)
 405                 memset(dev->tx_buf + skb->len, 0, IPHETH_BUF_SIZE - skb->len);
 406
 407         usb_fill_bulk_urb(dev->tx_urb, udev,
 408                           usb_sndbulkpipe(udev, dev->bulk_out),
 409                           dev->tx_buf, IPHETH_BUF_SIZE,
 410                           ipheth_sndbulk_callback,
 411                           dev);
 412         dev->tx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 413
 414         retval = usb_submit_urb(dev->tx_urb, GFP_ATOMIC);
 415         if (retval) {
 416                 dev_err(&dev->intf->dev, "%s: usb_submit_urb: %d\n",
 417                         __func__, retval);
 418                 dev->net->stats.tx_errors++;
 419                 dev_kfree_skb_irq(skb);
 420         } else {
 421                 dev->tx_skb = skb;
 422
 423                 dev->net->stats.tx_packets++;
 424                 dev->net->stats.tx_bytes += skb->len;
 425                 netif_stop_queue(net);
 426         }
 427
 428         return NETDEV_TX_OK;
 429 }
 430
 431 static void ipheth_tx_timeout(struct net_device *net)
 432 {
 433         struct ipheth_device *dev = netdev_priv(net);
 434
 435         dev_err(&dev->intf->dev, "%s: TX timeout\n", __func__);
 436         dev->net->stats.tx_errors++;
 437         usb_unlink_urb(dev->tx_urb);
 438 }
 439
 440 static u32 ipheth_ethtool_op_get_link(struct net_device *net)
 441 {
 442         struct ipheth_device *dev = netdev_priv(net);
 443         return netif_carrier_ok(dev->net);
 444 }
 445
 446 static const struct ethtool_ops ops = {
 447         .get_link = ipheth_ethtool_op_get_link
 448 };
 449
 450 static const struct net_device_ops ipheth_netdev_ops = {
 451         .ndo_open = ipheth_open,
 452         .ndo_stop = ipheth_close,
 453         .ndo_start_xmit = ipheth_tx,
 454         .ndo_tx_timeout = ipheth_tx_timeout,
 455 };
 456
 457 static int ipheth_probe(struct usb_interface *intf,
 458                         const struct usb_device_id *id)
 459 {
 460         struct usb_device *udev = interface_to_usbdev(intf);
 461         struct usb_host_interface *hintf;
 462         struct usb_endpoint_descriptor *endp;
 463         struct ipheth_device *dev;
 464         struct net_device *netdev;
 465         int i;
 466         int retval;
 467
 468         netdev = alloc_etherdev(sizeof(struct ipheth_device));
 469         if (!netdev)
 470                 return -ENOMEM;
 471
 472         netdev->netdev_ops = &ipheth_netdev_ops;
 473         netdev->watchdog_timeo = IPHETH_TX_TIMEOUT;
 474         strcpy(netdev->name, "eth%d");
 475
 476         dev = netdev_priv(netdev);
 477         dev->udev = udev;
 478         dev->net = netdev;
 479         dev->intf = intf;
 480
 481         /* Set up endpoints */
 482         hintf = usb_altnum_to_altsetting(intf, IPHETH_ALT_INTFNUM);
 483         if (hintf == NULL) {
 484                 retval = -ENODEV;
 485                 dev_err(&intf->dev, "Unable to find alternate settings interface\n");
 486                 goto err_endpoints;
 487         }
 488
 489         for (i = 0; i < hintf->desc.bNumEndpoints; i++) {
 490                 endp = &hintf->endpoint[i].desc;
 491                 if (usb_endpoint_is_bulk_in(endp))
 492                         dev->bulk_in = endp->bEndpointAddress;
 493                 else if (usb_endpoint_is_bulk_out(endp))
 494                         dev->bulk_out = endp->bEndpointAddress;
 495         }
 496         if (!(dev->bulk_in && dev->bulk_out)) {
 497                 retval = -ENODEV;
 498                 dev_err(&intf->dev, "Unable to find endpoints\n");
 499                 goto err_endpoints;
 500         }
 501
 502         dev->ctrl_buf = kmalloc(IPHETH_CTRL_BUF_SIZE, GFP_KERNEL);
 503         if (dev->ctrl_buf == NULL) {
 504                 retval = -ENOMEM;
 505                 goto err_alloc_ctrl_buf;
 506         }
 507
 508         retval = ipheth_get_macaddr(dev);
 509         if (retval)
 510                 goto err_get_macaddr;
 511
 512         INIT_DELAYED_WORK(&dev->carrier_work, ipheth_carrier_check_work);
 513
 514         retval = ipheth_alloc_urbs(dev);
 515         if (retval) {
 516                 dev_err(&intf->dev, "error allocating urbs: %d\n", retval);
 517                 goto err_alloc_urbs;
 518         }
 519
 520         usb_set_intfdata(intf, dev);
 521
 522         SET_NETDEV_DEV(netdev, &intf->dev);
 523         SET_ETHTOOL_OPS(netdev, &ops);
 524
 525         retval = register_netdev(netdev);
 526         if (retval) {
 527                 dev_err(&intf->dev, "error registering netdev: %d\n", retval);
 528                 retval = -EIO;
 529                 goto err_register_netdev;
 530         }
 531
 532         dev_info(&intf->dev, "Apple iPhone USB Ethernet device attached\n");
 533         return 0;
 534
 535 err_register_netdev:
 536         ipheth_free_urbs(dev);
 537 err_alloc_urbs:
 538 err_get_macaddr:
 539 err_alloc_ctrl_buf:
 540         kfree(dev->ctrl_buf);
 541 err_endpoints:
 542         free_netdev(netdev);
 543         return retval;
 544 }
 545
 546 static void ipheth_disconnect(struct usb_interface *intf)
 547 {
 548         struct ipheth_device *dev;
 549
 550         dev = usb_get_intfdata(intf);
 551         if (dev != NULL) {
 552                 unregister_netdev(dev->net);
 553                 ipheth_kill_urbs(dev);
 554                 ipheth_free_urbs(dev);
 555                 kfree(dev->ctrl_buf);
 556                 free_netdev(dev->net);
 557         }
 558         usb_set_intfdata(intf, NULL);
 559         dev_info(&intf->dev, "Apple iPhone USB Ethernet now disconnected\n");
 560 }
 561
 562 static struct usb_driver ipheth_driver = {
 563         .name =         "ipheth",
 564         .probe =        ipheth_probe,
 565         .disconnect =   ipheth_disconnect,
 566         .id_table =     ipheth_table,
 567         .disable_hub_initiated_lpm = 1,
 568 };
 569
 570 module_usb_driver(ipheth_driver);
 571
 572 MODULE_AUTHOR("Diego Giagio <diego@giagio.com>");
 573 MODULE_DESCRIPTION("Apple iPhone USB Ethernet driver");
 574 MODULE_LICENSE("Dual BSD/GPL");