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path: root/drivers/net/ipvlan/ipvlan_main.c
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Diffstat (limited to 'drivers/net/ipvlan/ipvlan_main.c')
-rw-r--r--drivers/net/ipvlan/ipvlan_main.c40
1 files changed, 31 insertions, 9 deletions
diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index 4377c26f714d..4a949569ec4c 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c
@@ -75,10 +75,23 @@ static int ipvlan_set_port_mode(struct ipvl_port *port, u16 nval)
{
struct ipvl_dev *ipvlan;
struct net_device *mdev = port->dev;
- int err = 0;
+ unsigned int flags;
+ int err;
ASSERT_RTNL();
if (port->mode != nval) {
+ list_for_each_entry(ipvlan, &port->ipvlans, pnode) {
+ flags = ipvlan->dev->flags;
+ if (nval == IPVLAN_MODE_L3 || nval == IPVLAN_MODE_L3S) {
+ err = dev_change_flags(ipvlan->dev,
+ flags | IFF_NOARP);
+ } else {
+ err = dev_change_flags(ipvlan->dev,
+ flags & ~IFF_NOARP);
+ }
+ if (unlikely(err))
+ goto fail;
+ }
if (nval == IPVLAN_MODE_L3S) {
/* New mode is L3S */
err = ipvlan_register_nf_hook(read_pnet(&port->pnet));
@@ -86,21 +99,28 @@ static int ipvlan_set_port_mode(struct ipvl_port *port, u16 nval)
mdev->l3mdev_ops = &ipvl_l3mdev_ops;
mdev->priv_flags |= IFF_L3MDEV_MASTER;
} else
- return err;
+ goto fail;
} else if (port->mode == IPVLAN_MODE_L3S) {
/* Old mode was L3S */
mdev->priv_flags &= ~IFF_L3MDEV_MASTER;
ipvlan_unregister_nf_hook(read_pnet(&port->pnet));
mdev->l3mdev_ops = NULL;
}
- list_for_each_entry(ipvlan, &port->ipvlans, pnode) {
- if (nval == IPVLAN_MODE_L3 || nval == IPVLAN_MODE_L3S)
- ipvlan->dev->flags |= IFF_NOARP;
- else
- ipvlan->dev->flags &= ~IFF_NOARP;
- }
port->mode = nval;
}
+ return 0;
+
+fail:
+ /* Undo the flags changes that have been done so far. */
+ list_for_each_entry_continue_reverse(ipvlan, &port->ipvlans, pnode) {
+ flags = ipvlan->dev->flags;
+ if (port->mode == IPVLAN_MODE_L3 ||
+ port->mode == IPVLAN_MODE_L3S)
+ dev_change_flags(ipvlan->dev, flags | IFF_NOARP);
+ else
+ dev_change_flags(ipvlan->dev, flags & ~IFF_NOARP);
+ }
+
return err;
}
@@ -594,7 +614,8 @@ int ipvlan_link_new(struct net *src_net, struct net_device *dev,
ipvlan->phy_dev = phy_dev;
ipvlan->dev = dev;
ipvlan->sfeatures = IPVLAN_FEATURES;
- ipvlan_adjust_mtu(ipvlan, phy_dev);
+ if (!tb[IFLA_MTU])
+ ipvlan_adjust_mtu(ipvlan, phy_dev);
INIT_LIST_HEAD(&ipvlan->addrs);
spin_lock_init(&ipvlan->addrs_lock);
@@ -693,6 +714,7 @@ void ipvlan_link_setup(struct net_device *dev)
{
ether_setup(dev);
+ dev->max_mtu = ETH_MAX_MTU;
dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
dev->priv_flags |= IFF_UNICAST_FLT | IFF_NO_QUEUE;
dev->netdev_ops = &ipvlan_netdev_ops;