netdev - [PATCH] NET: hamradio: Fix IP over bpq encapsulation.

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Date:	Sat, 4 Jul 2015 11:22:30 +0200
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-hams@...r.kernel.org, stable@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [PATCH] NET: hamradio: Fix IP over bpq encapsulation.

Since 1d5da757da860a6916adbf68b09e868062b4b3b8 (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@...ssion.com>.

Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
Cc: <stable@...r.kernel.org> # 4.1
---
 drivers/net/hamradio/bpqether.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index 63ff08a..5b54b18 100644
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -483,6 +483,7 @@ 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;
--
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