diff options
Diffstat (limited to 'drivers/net/macvlan.c')
| -rw-r--r-- | drivers/net/macvlan.c | 8 |
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); |