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path: root/drivers/net/macvlan.c
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Diffstat (limited to 'drivers/net/macvlan.c')
-rw-r--r--drivers/net/macvlan.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 3234fcdea317..a0644158647a 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -777,7 +777,7 @@ static int macvlan_change_mtu(struct net_device *dev, int new_mtu)
{
struct macvlan_dev *vlan = netdev_priv(dev);
- if (new_mtu < 68 || vlan->lowerdev->mtu < new_mtu)
+ if (vlan->lowerdev->mtu < new_mtu)
return -EINVAL;
dev->mtu = new_mtu;
return 0;
@@ -1085,6 +1085,8 @@ void macvlan_common_setup(struct net_device *dev)
{
ether_setup(dev);
+ dev->min_mtu = 0;
+ dev->max_mtu = ETH_MAX_MTU;
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
netif_keep_dst(dev);
dev->priv_flags |= IFF_UNICAST_FLT;
@@ -1297,6 +1299,10 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
else if (dev->mtu > lowerdev->mtu)
return -EINVAL;
+ /* MTU range: 68 - lowerdev->max_mtu */
+ dev->min_mtu = ETH_MIN_MTU;
+ dev->max_mtu = lowerdev->max_mtu;
+
if (!tb[IFLA_ADDRESS])
eth_hw_addr_random(dev);