asix: allow full size 8021Q frames to be received

[ Upstream commit 9dae31009b1a00d926c6fe032d5a88099620adc3 ]

asix driver drops 8021Q full size frames because it doesn't take into
account VLAN header size.

Tested on AX88772 adapter.

Signed-off-by: Eric Dumazet <edumazet@google.com>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: Allan Chou <allan@asix.com.tw>
CC: Trond Wuellner <trond@chromium.org>
CC: Grant Grundler <grundler@chromium.org>
CC: Paul Stewart <pstew@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c
index 42b5151aa78ae8523b27493394ba87e9900338a5..609fcc331595a087f8b6d93a40adf6f739bbe2f4 100644 (file)
--- a/drivers/net/usb/asix.c
+++ b/drivers/net/usb/asix.c
@@ -35,6 +35,7 @@
 #include <linux/crc32.h>
 #include <linux/usb/usbnet.h>
 #include <linux/slab.h>
+#include <linux/if_vlan.h>
 
 #define DRIVER_VERSION "22-Dec-2011"
 #define DRIVER_NAME "asix"
@@ -321,7 +322,7 @@ static int asix_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
                        return 0;
                }
 
-               if ((size > dev->net->mtu + ETH_HLEN) ||
+               if ((size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) ||
                    (size + offset > skb->len)) {
                        netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
                                   size);