bonding: Don't allow bond devices to change network namespaces.

Like bridge, bonding as netdevice doesn't cross netns boundaries.

Bonding ports and bonding itself live in same netns.

Signed-off-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 4a8ccce3315a2a6b460f1233a51f77aa954e86f0..f9e0c8bbfa41e91915eb05e3172257652cad9f9c 100644 (file)
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3884,6 +3884,9 @@ void bond_setup(struct net_device *bond_dev)
         * capable
         */
 
+       /* Don't allow bond devices to change network namespaces. */
+       bond_dev->features |= NETIF_F_NETNS_LOCAL;
+
        bond_dev->hw_features = BOND_VLAN_FEATURES |
                                NETIF_F_HW_VLAN_CTAG_TX |
                                NETIF_F_HW_VLAN_CTAG_RX |