linux-kernel - [PATCH] ARCNET: fix hard_header

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Message-Id: <1438263276-26202-1-git-send-email-m.grzeschik@pengutronix.de>
Date:	Thu, 30 Jul 2015 15:34:36 +0200
From:	Michael Grzeschik <m.grzeschik@...gutronix.de>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel@...gutronix.de
Subject: [PATCH] ARCNET: fix hard_header_len limit

The commit <9c7077622dd9> ("packet: make packet_snd fail on len smaller
than l2 header") adds the check for minimum packet length of the used l2.
For arcnet the hardware header length is not the complete archdr which
includes hard + soft header. This patch changes the length to
sizeof(arc_hardware).

Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>
---
 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 10f71c73..816d0e9 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;
-- 
2.1.4

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