Commit 980137a2 authored Sep 17, 2015 by Michael Grzeschik Committed by David S. Miller Sep 17, 2015

ARCNET: fix hard_header_len limit



For arcnet the bare minimum header only contains the 4 bytes to
specify source, dest and offset (1, 1 and 2 bytes respectively).
The corresponding struct is struct arc_hardware.

The struct archdr contains additionally a union of possible soft
headers. When doing $insertusecasehere packets might well
include short (or even no?) soft headers.

For this reason only use arc_hardware instead of archdr to
determine the hard_header_len for an arcnet device.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 1dbb2413

drivers/net/arcnet/arcnet.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -326,7 +326,7 @@ static void arcdev_setup(struct net_device *dev)
		dev->type = ARPHRD_ARCNET;
		dev->netdev_ops = &arcnet_netdev_ops;
		dev->header_ops = &arcnet_header_ops;
		dev->hard_header_len = sizeof(struct archdr);
		dev->hard_header_len = sizeof(struct arc_hardware);
		dev->mtu = choose_mtu();

		dev->addr_len = ARCNET_ALEN;