--- zzzz-none-000/linux-4.4.60/drivers/net/usb/usbnet.c	2017-04-08 07:53:53.000000000 +0000
+++ dragonfly-4020-701/linux-4.4.60/drivers/net/usb/usbnet.c	2018-11-08 13:36:17.000000000 +0000
@@ -47,6 +47,10 @@
 #include <linux/kernel.h>
 #include <linux/pm_runtime.h>
 
+#ifdef CONFIG_AVM_PA
+#include <linux/avm_pa.h>
+#endif
+
 #define DRIVER_VERSION		"22-Aug-2005"
 
 
@@ -335,6 +339,12 @@
 	if (skb_defer_rx_timestamp(skb))
 		return;
 
+#if defined(CONFIG_AVM_PA)
+	if (avm_pa_dev_receive(AVM_PA_DEVINFO(dev->net), skb) == AVM_PA_RX_ACCELERATED) {
+		return;
+	}
+#endif //defined(CONFIG_AVM_PA)
+
 	status = netif_rx (skb);
 	if (status != NET_RX_SUCCESS)
 		netif_dbg(dev, rx_err, dev->net,
@@ -1591,6 +1601,60 @@
 	.name	= "wwan",
 };
 
+#ifdef CONFIG_AVM_PA
+static void pa_dev_transmit(void *arg, struct sk_buff *skb)
+{
+	int rc;
+	skb->dev = arg;
+	rc = dev_queue_xmit(skb);
+	if((rc & NETDEV_TX_MASK) != NETDEV_TX_OK) {
+		pr_warn("[%s] pa_dev_transmit(%s) %d",
+		        __func__,
+		        ((struct net_device *)arg)->name,
+		        rc);
+	}
+}
+static int setup_avm_pa_eth_dev( struct net_device *dev ) {
+	/* register avm_pa pid and set hw info */
+	struct usbnet *usbdev;
+	struct avm_pa_pid_cfg *cfg;
+	struct avm_pa_vpid_cfg *vcfg;
+	struct avm_pa_pid_hwinfo hwinfo;
+	int err;
+
+	usbdev = netdev_priv(dev);
+	pr_err("[%s] dev %s\n", __func__, dev->name);
+
+	cfg = &usbdev->pid_cfg;
+	memset(cfg, 0, sizeof(*cfg));
+	vcfg = &usbdev->vpid_cfg;
+	memset(vcfg, 0, sizeof(*vcfg));
+
+	strncpy(cfg->name, dev->name, sizeof(cfg->name));
+	cfg->tx_func = &pa_dev_transmit;
+	cfg->tx_arg = dev;
+	cfg->default_mtu = 1500;
+	cfg->framing = avm_pa_framing_dev;
+	err = avm_pa_dev_pid_register(&dev->avm_pa.devinfo, cfg);
+	if(err < 0) return err;
+
+	strncpy(vcfg->name, dev->name, sizeof(vcfg->name));
+	vcfg->v4_mtu = 1500;
+	vcfg->v6_mtu = 1500;
+	err = avm_pa_dev_vpid_register(&dev->avm_pa.devinfo, vcfg);
+	if (err < 0) goto undo;
+
+	memset(&hwinfo, 0, sizeof(hwinfo));
+	err = avm_pa_pid_set_hwinfo(
+				    dev->avm_pa.devinfo.pid_handle, &hwinfo);
+
+undo:
+	if (err < 0)
+		avm_pa_dev_unregister(&dev->avm_pa.devinfo);
+	return err;
+}
+#endif
+
 int
 usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 {
@@ -1674,6 +1738,13 @@
 		if (status < 0)
 			goto out1;
 
+/*--- 20180222 AVM/WKR - we need lte0 for LTE product ---*/
+#if defined (CONFIG_ATH79_MACH_AVM_HW214)
+		strcpy(net->name, "lte%d");
+#endif
+		
+/*--- 20160222 AVM/VGJ - CHANGESET: AVM-TWEAK: we always want usb0, not eth4  ---*/
+#if 0
 		// 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.
@@ -1681,12 +1752,18 @@
 		    ((dev->driver_info->flags & FLAG_POINTTOPOINT) == 0 ||
 		     (net->dev_addr [0] & 0x02) == 0))
 			strcpy (net->name, "eth%d");
+#endif
+
 		/* WLAN devices should always be named "wlan%d" */
 		if ((dev->driver_info->flags & FLAG_WLAN) != 0)
 			strcpy(net->name, "wlan%d");
+
+/*--- 20160926 AVM/WKR - CHANGESET: AVM-TWEAK: use usb0 for cdc_ncm  ---*/
+#if 0
 		/* WWAN devices should always be named "wwan%d" */
 		if ((dev->driver_info->flags & FLAG_WWAN) != 0)
 			strcpy(net->name, "wwan%d");
+#endif
 
 		/* devices that cannot do ARP */
 		if ((dev->driver_info->flags & FLAG_NOARP) != 0)
@@ -1756,6 +1833,10 @@
 	if (dev->driver_info->flags & FLAG_LINK_INTR)
 		usbnet_link_change(dev, 0, 0);
 
+#ifdef CONFIG_AVM_PA
+	setup_avm_pa_eth_dev(dev->net);
+#endif
+
 	return 0;
 
 out5:
@@ -1990,6 +2071,10 @@
 			elength = 1;
 			goto next_desc;
 		}
+		if ((buflen < elength) || (elength < 3)) {
+			dev_err(&intf->dev, "invalid descriptor buffer length\n");
+			break;
+		}
 		if (buffer[1] != USB_DT_CS_INTERFACE) {
 			dev_err(&intf->dev, "skipping garbage\n");
 			goto next_desc;