From 980137a20317055451a73547cf07be4ddea039ee Mon Sep 17 00:00:00 2001 From: Michael Grzeschik <m.grzeschik@pengutronix.de> Date: Thu, 17 Sep 2015 15:18:34 +0200 Subject: [PATCH] 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> --- drivers/net/arcnet/arcnet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c index 10f71c732b599..816d0e94961c9 100644 --- a/drivers/net/arcnet/arcnet.c +++ b/drivers/net/arcnet/arcnet.c @@ -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; -- GitLab