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Commit 321acc1c authored by Alexey Kodanev's avatar Alexey Kodanev Committed by David S. Miller
Browse files

geneve: check MTU for a minimum in geneve_change_mtu() 



geneve_change_mtu() will be used not only as ndo_change_mtu() callback,
but also to verify a user specified MTU on a new link creation in the
next patch.

Signed-off-by: default avatarAlexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5edbea69

drivers/net/geneve.c

+2 −3
Original line number Diff line number Diff line
@@ -942,11 +942,10 @@ static netdev_tx_t geneve_xmit(struct sk_buff *skb, struct net_device *dev) 


static int geneve_change_mtu(struct net_device *dev, int new_mtu)

{

	/* Only possible if called internally, ndo_change_mtu path's new_mtu

	 * is guaranteed to be between dev->min_mtu and dev->max_mtu.

	 */

	if (new_mtu > dev->max_mtu)

		new_mtu = dev->max_mtu;

	else if (new_mtu < dev->min_mtu)

		new_mtu = dev->min_mtu;



	dev->mtu = new_mtu;

	return 0;