NET: hamradio: Fix IP over bpq encapsulation.

Since 0b65afe5d668e6dc36db3c9cd19140e43367ef76 (ax25: Stop using magic
neighbour cache operations.) any attempt to transmit IP packets over
a bpqether device will result in a message like "Dead loop on virtual
device bpq0, fix it urgently!"

Fix suggested by Eric W. Biederman <ebiederm@xmission.com>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: <stable@vger.kernel.org> # 4.1
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index 7856b6ccf5c547e5c4eaf790d111f40527c375fa..d95a50ae996dd4d57f78e67b51a7a3e79f8caaf3 100644 (file)
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -482,6 +482,7 @@ static void bpq_setup(struct net_device *dev)
        memcpy(dev->dev_addr,  &ax25_defaddr, AX25_ADDR_LEN);
 
        dev->flags      = 0;
+       dev->features   = NETIF_F_LLTX; /* Allow recursion */
 
 #if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
        dev->header_ops      = &ax25_header_ops;