static void ipheth_disconnect(struct usb_interface *intf)
{
struct ipheth_device *dev;
dev = usb_get_intfdata(intf);
if (dev != NULL) {
unregister_netdev(dev->net);
ipheth_kill_urbs(dev);
ipheth_free_urbs(dev);
kfree(dev->ctrl_buf);
free_netdev(dev->net);
}
usb_set_intfdata(intf, NULL);
dev_info(&intf->dev, "Apple iPhone USB Ethernet now disconnected\n");
}
static int ipheth_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_host_interface *hintf;
struct usb_endpoint_descriptor *endp;
struct ipheth_device *dev;
struct net_device *netdev;
int i;
int retval;
netdev = alloc_etherdev(sizeof(struct ipheth_device));
if (!netdev)
return -ENOMEM;
netdev->netdev_ops = &ipheth_netdev_ops;
netdev->watchdog_timeo = IPHETH_TX_TIMEOUT;
strcpy(netdev->name, "eth%d");
dev = netdev_priv(netdev);
dev->udev = udev;
dev->net = netdev;
dev->intf = intf;
dev->confirmed_pairing = false;
/* Set up endpoints */
hintf = usb_altnum_to_altsetting(intf, IPHETH_ALT_INTFNUM);
if (hintf == NULL) {
retval = -ENODEV;
dev_err(&intf->dev, "Unable to find alternate settings interface\n");
goto err_endpoints;
}
for (i = 0; i < hintf->desc.bNumEndpoints; i++) {
endp = &hintf->endpoint[i].desc;
if (usb_endpoint_is_bulk_in(endp))
dev->bulk_in = endp->bEndpointAddress;
else if (usb_endpoint_is_bulk_out(endp))
dev->bulk_out = endp->bEndpointAddress;
}
if (!(dev->bulk_in && dev->bulk_out)) {
retval = -ENODEV;
dev_err(&intf->dev, "Unable to find endpoints\n");
goto err_endpoints;
}
dev->ctrl_buf = kmalloc(IPHETH_CTRL_BUF_SIZE, GFP_KERNEL);
if (dev->ctrl_buf == NULL) {
retval = -ENOMEM;
goto err_alloc_ctrl_buf;
}
retval = ipheth_get_macaddr(dev);
if (retval)
goto err_get_macaddr;
INIT_DELAYED_WORK(&dev->carrier_work, ipheth_carrier_check_work);
retval = ipheth_alloc_urbs(dev);
if (retval) {
dev_err(&intf->dev, "error allocating urbs: %d\n", retval);
goto err_alloc_urbs;
}
usb_set_intfdata(intf, dev);
SET_NETDEV_DEV(netdev, &intf->dev);
netdev->ethtool_ops = &ops;
retval = register_netdev(netdev);
if (retval) {
dev_err(&intf->dev, "error registering netdev: %d\n", retval);
retval = -EIO;
goto err_register_netdev;
}
// carrier down and transmit queues stopped until packet from device
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
dev_info(&intf->dev, "Apple iPhone USB Ethernet device attached\n");
return 0;
err_register_netdev:
ipheth_free_urbs(dev);
err_alloc_urbs:
err_get_macaddr:
err_alloc_ctrl_buf:
kfree(dev->ctrl_buf);
err_endpoints:
free_netdev(netdev);
return retval;
}
static int ipheth_probe (struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_host_interface *hintf;
struct usb_endpoint_descriptor *endp;
struct ipheth_device *dev;
struct net_device *netdev;
int i;
int retval;
/* Ensure we are probing the right interface */
if (intf->cur_altsetting->desc.bInterfaceClass != IPHETH_USBINTF_CLASS ||
intf->cur_altsetting->desc.bInterfaceSubClass != IPHETH_USBINTF_SUBCLASS)
return -ENODEV;
netdev = alloc_etherdev(sizeof(struct ipheth_device));
if (!netdev)
return -ENOMEM;
#ifdef HAVE_NET_DEVICE_OPS
netdev->netdev_ops = &ipheth_netdev_ops;
#else /* CONFIG_COMPAT_NET_DEV_OPS */
netdev->open = &ipheth_open;
netdev->stop = &ipheth_close;
netdev->hard_start_xmit = &ipheth_tx;
netdev->tx_timeout = &ipheth_tx_timeout;
netdev->get_stats = &ipheth_stats;
#endif
netdev->watchdog_timeo = IPHETH_TX_TIMEOUT;
dev = netdev_priv(netdev);
dev->udev = udev;
dev->net = netdev;
dev->intf = intf;
/* Set up endpoints */
hintf = usb_altnum_to_altsetting (intf, IPHETH_ALT_INTFNUM);
if (hintf == NULL) {
retval = -ENODEV;
err("Unable to find alternate settings interface");
goto err_endpoints;
}
for (i = 0; i < hintf->desc.bNumEndpoints; i++) {
endp = &hintf->endpoint[i].desc;
if (usb_endpoint_is_bulk_in(endp))
dev->bulk_in = endp->bEndpointAddress;
else if (usb_endpoint_is_bulk_out(endp))
dev->bulk_out = endp->bEndpointAddress;
}
if (!(dev->bulk_in && dev->bulk_out)) {
retval = -ENODEV;
err("Unable to find endpoints");
goto err_endpoints;
}
dev->ctrl_buf = kmalloc(IPHETH_CTRL_BUF_SIZE, GFP_KERNEL);
if (dev->ctrl_buf == NULL) {
retval = -ENOMEM;
goto err_alloc_ctrl_buf;
}
if ((retval = ipheth_get_macaddr(dev)))
goto err_get_macaddr;
INIT_DELAYED_WORK(&dev->carrier_work, ipheth_carrier_check_work);
if ((retval = ipheth_alloc_urbs(dev))) {
err("error allocating urbs: %d", retval);
goto err_alloc_urbs;
}
usb_set_intfdata(intf, dev);
SET_NETDEV_DEV(netdev, &intf->dev);
SET_ETHTOOL_OPS(netdev, &ops);
if ((retval = register_netdev(netdev))) {
err("error registering netdev: %d", retval);
retval = -EIO;
goto err_register_netdev;
}
dev_info(&intf->dev, "Apple iPhone USB Ethernet device attached\n");
return 0;
err_register_netdev:
ipheth_free_urbs(dev);
err_alloc_urbs:
err_get_macaddr:
err_alloc_ctrl_buf:
kfree(dev->ctrl_buf);
err_endpoints:
free_netdev(netdev);
return retval;
}