在code/kernel-6.1/drivers/net/usb/usbnet.c文件中更
有几处地都可以改

最好在添加下面一行。但是要注意同时只能用一个usb网卡，多个不知道会怎么样
strcpy(dev->name,“eth1”); //第三处添加

usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
{
	struct usbnet			*dev;
	struct net_device		*net;
	struct usb_host_interface	*interface;
	const struct driver_info	*info;
	struct usb_device		*xdev;
	int				status;
	const char			*name;
	struct usb_driver 	*driver = to_usb_driver(udev->dev.driver);

	/* usbnet already took usb runtime pm, so have to enable the feature
	 * for usb interface, otherwise usb_autopm_get_interface may return
	 * failure if RUNTIME_PM is enabled.
	 */
	if (!driver->supports_autosuspend) {
		driver->supports_autosuspend = 1;
		pm_runtime_enable(&udev->dev);
	}

	name = udev->dev.driver->name;
	info = (const struct driver_info *) prod->driver_info;
	if (!info) {
		dev_dbg (&udev->dev, "blacklisted by %s\n", name);
		return -ENODEV;
	}
	xdev = interface_to_usbdev (udev);
	interface = udev->cur_altsetting;

	status = -ENOMEM;

	// set up our own records
	net = alloc_etherdev(sizeof(*dev));
	if (!net)
		goto out;

	/* netdev_printk() needs this so do it as early as possible */
	SET_NETDEV_DEV(net, &udev->dev);

	dev = netdev_priv(net);
	dev->udev = xdev;
	dev->intf = udev;
	dev->driver_info = info;
	dev->driver_name = name;
	dev->rx_speed = SPEED_UNSET;
	dev->tx_speed = SPEED_UNSET;

	net->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
	if (!net->tstats)
		goto out0;

	dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
				| NETIF_MSG_PROBE | NETIF_MSG_LINK);
	init_waitqueue_head(&dev->wait);
	skb_queue_head_init (&dev->rxq);
	skb_queue_head_init (&dev->txq);
	skb_queue_head_init (&dev->done);
	skb_queue_head_init(&dev->rxq_pause);
	tasklet_setup(&dev->bh, usbnet_bh_tasklet);
	INIT_WORK (&dev->kevent, usbnet_deferred_kevent);
	init_usb_anchor(&dev->deferred);
	timer_setup(&dev->delay, usbnet_bh, 0);
	mutex_init (&dev->phy_mutex);
	mutex_init(&dev->interrupt_mutex);
	dev->interrupt_count = 0;

	dev->net = net;
	strscpy(net->name, "usb%d", sizeof(net->name)); 			//第一次处
	eth_hw_addr_set(net, node_id);

	/* rx and tx sides can use different message sizes;
	 * bind() should set rx_urb_size in that case.
	 */
	dev->hard_mtu = net->mtu + net->hard_header_len;
	net->min_mtu = 0;
	net->max_mtu = ETH_MAX_MTU;

	net->netdev_ops = &usbnet_netdev_ops;
	net->watchdog_timeo = TX_TIMEOUT_JIFFIES;
	net->ethtool_ops = &usbnet_ethtool_ops;

	// allow device-specific bind/init procedures
	// NOTE net->name still not usable ...
	if (info->bind) {
		status = info->bind (dev, udev);
		if (status < 0)
			goto out1;

		// heuristic:  "usb%d" for links we know are two-host,
		// else "eth%d" when there's reasonable doubt.  userspace
		// can rename the link if it knows better.
		if ((dev->driver_info->flags & FLAG_ETHER) != 0 &&
		    ((dev->driver_info->flags & FLAG_POINTTOPOINT) == 0 ||
		     (net->dev_addr [0] & 0x02) == 0))
			strscpy(net->name, "eth%d", sizeof(net->name)); 			//第二处 
		/* WLAN devices should always be named "wlan%d" */
		if ((dev->driver_info->flags & FLAG_WLAN) != 0)
			strscpy(net->name, "wlan%d", sizeof(net->name));
		/* WWAN devices should always be named "wwan%d" */
		if ((dev->driver_info->flags & FLAG_WWAN) != 0)
			strscpy(net->name, "wwan%d", sizeof(net->name));

		/* devices that cannot do ARP */
		if ((dev->driver_info->flags & FLAG_NOARP) != 0)
			net->flags |= IFF_NOARP;

		/* maybe the remote can't receive an Ethernet MTU */
		if (net->mtu > (dev->hard_mtu - net->hard_header_len))
			net->mtu = dev->hard_mtu - net->hard_header_len;
	} else if (!info->in || !info->out)
		status = usbnet_get_endpoints (dev, udev);
	else {
		u8 ep_addrs[3] = {
			info->in + USB_DIR_IN, info->out + USB_DIR_OUT, 0
		};

		dev->in = usb_rcvbulkpipe (xdev, info->in);
		dev->out = usb_sndbulkpipe (xdev, info->out);
		if (!(info->flags & FLAG_NO_SETINT))
			status = usb_set_interface (xdev,
				interface->desc.bInterfaceNumber,
				interface->desc.bAlternateSetting);
		else
			status = 0;

		if (status == 0 && !usb_check_bulk_endpoints(udev, ep_addrs))
			status = -EINVAL;
	}
	if (status >= 0 && dev->status)
		status = init_status (dev, udev);
	if (status < 0)
		goto out3;

	if (!dev->rx_urb_size)
		dev->rx_urb_size = dev->hard_mtu;
	dev->maxpacket = usb_maxpacket(dev->udev, dev->out);
	if (dev->maxpacket == 0) {
		/* that is a broken device */
		status = -ENODEV;
		goto out4;
	}

	/* let userspace know we have a random address */
	if (ether_addr_equal(net->dev_addr, node_id))
		net->addr_assign_type = NET_ADDR_RANDOM;

	if ((dev->driver_info->flags & FLAG_WLAN) != 0)
		SET_NETDEV_DEVTYPE(net, &wlan_type);
	if ((dev->driver_info->flags & FLAG_WWAN) != 0)
		SET_NETDEV_DEVTYPE(net, &wwan_type);

	/* initialize max rx_qlen and tx_qlen */
	usbnet_update_max_qlen(dev);

	if (dev->can_dma_sg && !(info->flags & FLAG_SEND_ZLP) &&
		!(info->flags & FLAG_MULTI_PACKET)) {
		dev->padding_pkt = kzalloc(1, GFP_KERNEL);
		if (!dev->padding_pkt) {
			status = -ENOMEM;
			goto out4;
		}
	}

	status = register_netdev (net);
	strcpy(dev->name,"eth1"); 							//第三处添加
	if (status)
		goto out5;
	netif_info(dev, probe, dev->net,
		   "register '%s' at usb-%s-%s, %s, %pM\n",
		   udev->dev.driver->name,
		   xdev->bus->bus_name, xdev->devpath,
		   dev->driver_info->description,
		   net->dev_addr);

	// ok, it's ready to go.
	usb_set_intfdata (udev, dev);