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ipvlan: forbid vlan devices on top of ipvlan 

Currently we allow the creation of 8021q devices on top of
ipvlan, but such devices are nonfunctional, as the underlying
ipvlan rx_hanlder hook can't match the relevant traffic.

Be explicit and forbid the creation of such nonfunctional devices.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paolo Abeni 2018-03-02 16:03:32 +01:00 committed by David S. Miller
parent 51568d6940
commit 3518e40b3c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ipvlan/ipvlan_main.c
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@ -178,7 +178,7 @@ static int ipvlan_init(struct net_device *dev)
dev->state = (dev->state & ~IPVLAN_STATE_MASK) | dev->state = (dev->state & ~IPVLAN_STATE_MASK) |
(phy_dev->state & IPVLAN_STATE_MASK); (phy_dev->state & IPVLAN_STATE_MASK);
dev->features = phy_dev->features & IPVLAN_FEATURES; dev->features = phy_dev->features & IPVLAN_FEATURES;
dev->features |= NETIF_F_LLTX; dev->features |= NETIF_F_LLTX | NETIF_F_VLAN_CHALLENGED;
dev->gso_max_size = phy_dev->gso_max_size; dev->gso_max_size = phy_dev->gso_max_size;
dev->gso_max_segs = phy_dev->gso_max_segs; dev->gso_max_segs = phy_dev->gso_max_segs;
dev->hard_header_len = phy_dev->hard_header_len; dev->hard_header_len = phy_dev->hard_header_len;