Commit 980137a2 authored by Michael Grzeschik's avatar Michael Grzeschik Committed by David S. Miller
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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: default avatarMichael Grzeschik <>
Signed-off-by: default avatarDavid S. Miller <>
parent 1dbb2413
......@@ -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;
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