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/slab.h> 49 #include <linux/module.h> 50 #include <linux/netdevice.h> 51 #include <linux/etherdevice.h> 52 #include <linux/ethtool.h> 53 #include <linux/usb.h> 54 #include <linux/workqueue.h> 55 56 #define USB_VENDOR_APPLE 0x05ac 57 #define USB_PRODUCT_IPHONE 0x1290 58 #define USB_PRODUCT_IPHONE_3G 0x1292 59 #define USB_PRODUCT_IPHONE_3GS 0x1294 60 #define USB_PRODUCT_IPHONE_4 0x1297 61 #define USB_PRODUCT_IPAD 0x129a 62 #define USB_PRODUCT_IPAD_2 0x12a2 63 #define USB_PRODUCT_IPAD_3 0x12a6 64 #define USB_PRODUCT_IPAD_MINI 0x12ab 65 #define USB_PRODUCT_IPHONE_4_VZW 0x129c 66 #define USB_PRODUCT_IPHONE_4S 0x12a0 67 #define USB_PRODUCT_IPHONE_5 0x12a8 68 69 #define IPHETH_USBINTF_CLASS 255 70 #define IPHETH_USBINTF_SUBCLASS 253 71 #define IPHETH_USBINTF_PROTO 1 72 73 #define IPHETH_BUF_SIZE 1516 74 #define IPHETH_IP_ALIGN 2 /* padding at front of URB */ 75 #define IPHETH_TX_TIMEOUT (5 * HZ) 76 77 #define IPHETH_INTFNUM 2 78 #define IPHETH_ALT_INTFNUM 1 79 80 #define IPHETH_CTRL_ENDP 0x00 81 #define IPHETH_CTRL_BUF_SIZE 0x40 82 #define IPHETH_CTRL_TIMEOUT (5 * HZ) 83 84 #define IPHETH_CMD_GET_MACADDR 0x00 85 #define IPHETH_CMD_CARRIER_CHECK 0x45 86 87 #define IPHETH_CARRIER_CHECK_TIMEOUT round_jiffies_relative(1 * HZ) 88 #define IPHETH_CARRIER_ON 0x04 89 90 static const struct usb_device_id ipheth_table[] = { 91 { USB_DEVICE_AND_INTERFACE_INFO( 92 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE, 93 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 94 IPHETH_USBINTF_PROTO) }, 95 { USB_DEVICE_AND_INTERFACE_INFO( 96 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3G, 97 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 98 IPHETH_USBINTF_PROTO) }, 99 { USB_DEVICE_AND_INTERFACE_INFO( 100 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3GS, 101 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 102 IPHETH_USBINTF_PROTO) }, 103 { USB_DEVICE_AND_INTERFACE_INFO( 104 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4, 105 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 106 IPHETH_USBINTF_PROTO) }, 107 { USB_DEVICE_AND_INTERFACE_INFO( 108 USB_VENDOR_APPLE, USB_PRODUCT_IPAD, 109 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 110 IPHETH_USBINTF_PROTO) }, 111 { USB_DEVICE_AND_INTERFACE_INFO( 112 USB_VENDOR_APPLE, USB_PRODUCT_IPAD_2, 113 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 114 IPHETH_USBINTF_PROTO) }, 115 { USB_DEVICE_AND_INTERFACE_INFO( 116 USB_VENDOR_APPLE, USB_PRODUCT_IPAD_3, 117 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 118 IPHETH_USBINTF_PROTO) }, 119 { USB_DEVICE_AND_INTERFACE_INFO( 120 USB_VENDOR_APPLE, USB_PRODUCT_IPAD_MINI, 121 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 122 IPHETH_USBINTF_PROTO) }, 123 { USB_DEVICE_AND_INTERFACE_INFO( 124 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4_VZW, 125 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 126 IPHETH_USBINTF_PROTO) }, 127 { USB_DEVICE_AND_INTERFACE_INFO( 128 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4S, 129 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 130 IPHETH_USBINTF_PROTO) }, 131 { USB_DEVICE_AND_INTERFACE_INFO( 132 USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_5, 133 IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, 134 IPHETH_USBINTF_PROTO) }, 135 { } 136 }; 137 MODULE_DEVICE_TABLE(usb, ipheth_table); 138 139 struct ipheth_device { 140 struct usb_device *udev; 141 struct usb_interface *intf; 142 struct net_device *net; 143 struct sk_buff *tx_skb; 144 struct urb *tx_urb; 145 struct urb *rx_urb; 146 unsigned char *tx_buf; 147 unsigned char *rx_buf; 148 unsigned char *ctrl_buf; 149 u8 bulk_in; 150 u8 bulk_out; 151 struct delayed_work carrier_work; 152 bool confirmed_pairing; 153 }; 154 155 static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags); 156 157 static int ipheth_alloc_urbs(struct ipheth_device *iphone) 158 { 159 struct urb *tx_urb = NULL; 160 struct urb *rx_urb = NULL; 161 u8 *tx_buf = NULL; 162 u8 *rx_buf = NULL; 163 164 tx_urb = usb_alloc_urb(0, GFP_KERNEL); 165 if (tx_urb == NULL) 166 goto error_nomem; 167 168 rx_urb = usb_alloc_urb(0, GFP_KERNEL); 169 if (rx_urb == NULL) 170 goto free_tx_urb; 171 172 tx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE, 173 GFP_KERNEL, &tx_urb->transfer_dma); 174 if (tx_buf == NULL) 175 goto free_rx_urb; 176 177 rx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE, 178 GFP_KERNEL, &rx_urb->transfer_dma); 179 if (rx_buf == NULL) 180 goto free_tx_buf; 181 182 183 iphone->tx_urb = tx_urb; 184 iphone->rx_urb = rx_urb; 185 iphone->tx_buf = tx_buf; 186 iphone->rx_buf = rx_buf; 187 return 0; 188 189 free_tx_buf: 190 usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, tx_buf, 191 tx_urb->transfer_dma); 192 free_rx_urb: 193 usb_free_urb(rx_urb); 194 free_tx_urb: 195 usb_free_urb(tx_urb); 196 error_nomem: 197 return -ENOMEM; 198 } 199 200 static void ipheth_free_urbs(struct ipheth_device *iphone) 201 { 202 usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->rx_buf, 203 iphone->rx_urb->transfer_dma); 204 usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->tx_buf, 205 iphone->tx_urb->transfer_dma); 206 usb_free_urb(iphone->rx_urb); 207 usb_free_urb(iphone->tx_urb); 208 } 209 210 static void ipheth_kill_urbs(struct ipheth_device *dev) 211 { 212 usb_kill_urb(dev->tx_urb); 213 usb_kill_urb(dev->rx_urb); 214 } 215 216 static void ipheth_rcvbulk_callback(struct urb *urb) 217 { 218 struct ipheth_device *dev; 219 struct sk_buff *skb; 220 int status; 221 char *buf; 222 int len; 223 224 dev = urb->context; 225 if (dev == NULL) 226 return; 227 228 status = urb->status; 229 switch (status) { 230 case -ENOENT: 231 case -ECONNRESET: 232 case -ESHUTDOWN: 233 return; 234 case 0: 235 break; 236 default: 237 dev_err(&dev->intf->dev, "%s: urb status: %d\n", 238 __func__, status); 239 return; 240 } 241 242 if (urb->actual_length <= IPHETH_IP_ALIGN) { 243 dev->net->stats.rx_length_errors++; 244 return; 245 } 246 len = urb->actual_length - IPHETH_IP_ALIGN; 247 buf = urb->transfer_buffer + IPHETH_IP_ALIGN; 248 249 skb = dev_alloc_skb(len); 250 if (!skb) { 251 dev_err(&dev->intf->dev, "%s: dev_alloc_skb: -ENOMEM\n", 252 __func__); 253 dev->net->stats.rx_dropped++; 254 return; 255 } 256 257 skb_put_data(skb, buf, len); 258 skb->dev = dev->net; 259 skb->protocol = eth_type_trans(skb, dev->net); 260 261 dev->net->stats.rx_packets++; 262 dev->net->stats.rx_bytes += len; 263 dev->confirmed_pairing = true; 264 netif_rx(skb); 265 ipheth_rx_submit(dev, GFP_ATOMIC); 266 } 267 268 static void ipheth_sndbulk_callback(struct urb *urb) 269 { 270 struct ipheth_device *dev; 271 int status = urb->status; 272 273 dev = urb->context; 274 if (dev == NULL) 275 return; 276 277 if (status != 0 && 278 status != -ENOENT && 279 status != -ECONNRESET && 280 status != -ESHUTDOWN) 281 dev_err(&dev->intf->dev, "%s: urb status: %d\n", 282 __func__, status); 283 284 dev_kfree_skb_irq(dev->tx_skb); 285 if (status == 0) 286 netif_wake_queue(dev->net); 287 else 288 // on URB error, trigger immediate poll 289 schedule_delayed_work(&dev->carrier_work, 0); 290 } 291 292 static int ipheth_carrier_set(struct ipheth_device *dev) 293 { 294 struct usb_device *udev; 295 int retval; 296 297 if (!dev) 298 return 0; 299 if (!dev->confirmed_pairing) 300 return 0; 301 302 udev = dev->udev; 303 retval = usb_control_msg(udev, 304 usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP), 305 IPHETH_CMD_CARRIER_CHECK, /* request */ 306 0xc0, /* request type */ 307 0x00, /* value */ 308 0x02, /* index */ 309 dev->ctrl_buf, IPHETH_CTRL_BUF_SIZE, 310 IPHETH_CTRL_TIMEOUT); 311 if (retval < 0) { 312 dev_err(&dev->intf->dev, "%s: usb_control_msg: %d\n", 313 __func__, retval); 314 return retval; 315 } 316 317 if (dev->ctrl_buf[0] == IPHETH_CARRIER_ON) { 318 netif_carrier_on(dev->net); 319 if (dev->tx_urb->status != -EINPROGRESS) 320 netif_wake_queue(dev->net); 321 } else { 322 netif_carrier_off(dev->net); 323 netif_stop_queue(dev->net); 324 } 325 return 0; 326 } 327 328 static void ipheth_carrier_check_work(struct work_struct *work) 329 { 330 struct ipheth_device *dev = container_of(work, struct ipheth_device, 331 carrier_work.work); 332 333 ipheth_carrier_set(dev); 334 schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT); 335 } 336 337 static int ipheth_get_macaddr(struct ipheth_device *dev) 338 { 339 struct usb_device *udev = dev->udev; 340 struct net_device *net = dev->net; 341 int retval; 342 343 retval = usb_control_msg(udev, 344 usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP), 345 IPHETH_CMD_GET_MACADDR, /* request */ 346 0xc0, /* request type */ 347 0x00, /* value */ 348 0x02, /* index */ 349 dev->ctrl_buf, 350 IPHETH_CTRL_BUF_SIZE, 351 IPHETH_CTRL_TIMEOUT); 352 if (retval < 0) { 353 dev_err(&dev->intf->dev, "%s: usb_control_msg: %d\n", 354 __func__, retval); 355 } else if (retval < ETH_ALEN) { 356 dev_err(&dev->intf->dev, 357 "%s: usb_control_msg: short packet: %d bytes\n", 358 __func__, retval); 359 retval = -EINVAL; 360 } else { 361 memcpy(net->dev_addr, dev->ctrl_buf, ETH_ALEN); 362 retval = 0; 363 } 364 365 return retval; 366 } 367 368 static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags) 369 { 370 struct usb_device *udev = dev->udev; 371 int retval; 372 373 usb_fill_bulk_urb(dev->rx_urb, udev, 374 usb_rcvbulkpipe(udev, dev->bulk_in), 375 dev->rx_buf, IPHETH_BUF_SIZE, 376 ipheth_rcvbulk_callback, 377 dev); 378 dev->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 379 380 retval = usb_submit_urb(dev->rx_urb, mem_flags); 381 if (retval) 382 dev_err(&dev->intf->dev, "%s: usb_submit_urb: %d\n", 383 __func__, retval); 384 return retval; 385 } 386 387 static int ipheth_open(struct net_device *net) 388 { 389 struct ipheth_device *dev = netdev_priv(net); 390 struct usb_device *udev = dev->udev; 391 int retval = 0; 392 393 usb_set_interface(udev, IPHETH_INTFNUM, IPHETH_ALT_INTFNUM); 394 395 retval = ipheth_carrier_set(dev); 396 if (retval) 397 return retval; 398 399 retval = ipheth_rx_submit(dev, GFP_KERNEL); 400 if (retval) 401 return retval; 402 403 schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT); 404 return retval; 405 } 406 407 static int ipheth_close(struct net_device *net) 408 { 409 struct ipheth_device *dev = netdev_priv(net); 410 411 cancel_delayed_work_sync(&dev->carrier_work); 412 netif_stop_queue(net); 413 return 0; 414 } 415 416 static int ipheth_tx(struct sk_buff *skb, struct net_device *net) 417 { 418 struct ipheth_device *dev = netdev_priv(net); 419 struct usb_device *udev = dev->udev; 420 int retval; 421 422 /* Paranoid */ 423 if (skb->len > IPHETH_BUF_SIZE) { 424 WARN(1, "%s: skb too large: %d bytes\n", __func__, skb->len); 425 dev->net->stats.tx_dropped++; 426 dev_kfree_skb_irq(skb); 427 return NETDEV_TX_OK; 428 } 429 430 memcpy(dev->tx_buf, skb->data, skb->len); 431 if (skb->len < IPHETH_BUF_SIZE) 432 memset(dev->tx_buf + skb->len, 0, IPHETH_BUF_SIZE - skb->len); 433 434 usb_fill_bulk_urb(dev->tx_urb, udev, 435 usb_sndbulkpipe(udev, dev->bulk_out), 436 dev->tx_buf, IPHETH_BUF_SIZE, 437 ipheth_sndbulk_callback, 438 dev); 439 dev->tx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 440 441 retval = usb_submit_urb(dev->tx_urb, GFP_ATOMIC); 442 if (retval) { 443 dev_err(&dev->intf->dev, "%s: usb_submit_urb: %d\n", 444 __func__, retval); 445 dev->net->stats.tx_errors++; 446 dev_kfree_skb_irq(skb); 447 } else { 448 dev->tx_skb = skb; 449 450 dev->net->stats.tx_packets++; 451 dev->net->stats.tx_bytes += skb->len; 452 netif_stop_queue(net); 453 } 454 455 return NETDEV_TX_OK; 456 } 457 458 static void ipheth_tx_timeout(struct net_device *net) 459 { 460 struct ipheth_device *dev = netdev_priv(net); 461 462 dev_err(&dev->intf->dev, "%s: TX timeout\n", __func__); 463 dev->net->stats.tx_errors++; 464 usb_unlink_urb(dev->tx_urb); 465 } 466 467 static u32 ipheth_ethtool_op_get_link(struct net_device *net) 468 { 469 struct ipheth_device *dev = netdev_priv(net); 470 return netif_carrier_ok(dev->net); 471 } 472 473 static const struct ethtool_ops ops = { 474 .get_link = ipheth_ethtool_op_get_link 475 }; 476 477 static const struct net_device_ops ipheth_netdev_ops = { 478 .ndo_open = ipheth_open, 479 .ndo_stop = ipheth_close, 480 .ndo_start_xmit = ipheth_tx, 481 .ndo_tx_timeout = ipheth_tx_timeout, 482 }; 483 484 static int ipheth_probe(struct usb_interface *intf, 485 const struct usb_device_id *id) 486 { 487 struct usb_device *udev = interface_to_usbdev(intf); 488 struct usb_host_interface *hintf; 489 struct usb_endpoint_descriptor *endp; 490 struct ipheth_device *dev; 491 struct net_device *netdev; 492 int i; 493 int retval; 494 495 netdev = alloc_etherdev(sizeof(struct ipheth_device)); 496 if (!netdev) 497 return -ENOMEM; 498 499 netdev->netdev_ops = &ipheth_netdev_ops; 500 netdev->watchdog_timeo = IPHETH_TX_TIMEOUT; 501 strcpy(netdev->name, "eth%d"); 502 503 dev = netdev_priv(netdev); 504 dev->udev = udev; 505 dev->net = netdev; 506 dev->intf = intf; 507 dev->confirmed_pairing = false; 508 /* Set up endpoints */ 509 hintf = usb_altnum_to_altsetting(intf, IPHETH_ALT_INTFNUM); 510 if (hintf == NULL) { 511 retval = -ENODEV; 512 dev_err(&intf->dev, "Unable to find alternate settings interface\n"); 513 goto err_endpoints; 514 } 515 516 for (i = 0; i < hintf->desc.bNumEndpoints; i++) { 517 endp = &hintf->endpoint[i].desc; 518 if (usb_endpoint_is_bulk_in(endp)) 519 dev->bulk_in = endp->bEndpointAddress; 520 else if (usb_endpoint_is_bulk_out(endp)) 521 dev->bulk_out = endp->bEndpointAddress; 522 } 523 if (!(dev->bulk_in && dev->bulk_out)) { 524 retval = -ENODEV; 525 dev_err(&intf->dev, "Unable to find endpoints\n"); 526 goto err_endpoints; 527 } 528 529 dev->ctrl_buf = kmalloc(IPHETH_CTRL_BUF_SIZE, GFP_KERNEL); 530 if (dev->ctrl_buf == NULL) { 531 retval = -ENOMEM; 532 goto err_alloc_ctrl_buf; 533 } 534 535 retval = ipheth_get_macaddr(dev); 536 if (retval) 537 goto err_get_macaddr; 538 539 INIT_DELAYED_WORK(&dev->carrier_work, ipheth_carrier_check_work); 540 541 retval = ipheth_alloc_urbs(dev); 542 if (retval) { 543 dev_err(&intf->dev, "error allocating urbs: %d\n", retval); 544 goto err_alloc_urbs; 545 } 546 547 usb_set_intfdata(intf, dev); 548 549 SET_NETDEV_DEV(netdev, &intf->dev); 550 netdev->ethtool_ops = &ops; 551 552 retval = register_netdev(netdev); 553 if (retval) { 554 dev_err(&intf->dev, "error registering netdev: %d\n", retval); 555 retval = -EIO; 556 goto err_register_netdev; 557 } 558 // carrier down and transmit queues stopped until packet from device 559 netif_carrier_off(netdev); 560 netif_tx_stop_all_queues(netdev); 561 dev_info(&intf->dev, "Apple iPhone USB Ethernet device attached\n"); 562 return 0; 563 564 err_register_netdev: 565 ipheth_free_urbs(dev); 566 err_alloc_urbs: 567 err_get_macaddr: 568 err_alloc_ctrl_buf: 569 kfree(dev->ctrl_buf); 570 err_endpoints: 571 free_netdev(netdev); 572 return retval; 573 } 574 575 static void ipheth_disconnect(struct usb_interface *intf) 576 { 577 struct ipheth_device *dev; 578 579 dev = usb_get_intfdata(intf); 580 if (dev != NULL) { 581 unregister_netdev(dev->net); 582 ipheth_kill_urbs(dev); 583 ipheth_free_urbs(dev); 584 kfree(dev->ctrl_buf); 585 free_netdev(dev->net); 586 } 587 usb_set_intfdata(intf, NULL); 588 dev_info(&intf->dev, "Apple iPhone USB Ethernet now disconnected\n"); 589 } 590 591 static struct usb_driver ipheth_driver = { 592 .name = "ipheth", 593 .probe = ipheth_probe, 594 .disconnect = ipheth_disconnect, 595 .id_table = ipheth_table, 596 .disable_hub_initiated_lpm = 1, 597 }; 598 599 module_usb_driver(ipheth_driver); 600 601 MODULE_AUTHOR("Diego Giagio <diego@giagio.com>"); 602 MODULE_DESCRIPTION("Apple iPhone USB Ethernet driver"); 603 MODULE_LICENSE("Dual BSD/GPL"); 604