4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sabrina Dubroca <[email protected]>

[ Upstream commit 1017e0987117c32783ba7c10fe2e7ff1456ba1dc ]

VRF devices don't work with upper devices. Currently, it's possible to
add a VRF device to a bridge or team, and to create macvlan, macsec, or
ipvlan devices on top of a VRF (bond and vlan are prevented respectively
by the lack of an ndo_set_mac_address op and the NETIF_F_VLAN_CHALLENGED
feature flag).

Fix this by setting the IFF_NO_RX_HANDLER flag (introduced in commit
f5426250a6ec ("net: introduce IFF_NO_RX_HANDLER")).

Cc: David Ahern <[email protected]>
Fixes: 193125dbd8eb ("net: Introduce VRF device driver")
Signed-off-by: Sabrina Dubroca <[email protected]>
Acked-by: David Ahern <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 drivers/net/vrf.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/vrf.c
+++ b/drivers/net/vrf.c
@@ -1262,6 +1262,7 @@ static void vrf_setup(struct net_device
 
        /* default to no qdisc; user can add if desired */
        dev->priv_flags |= IFF_NO_QUEUE;
+       dev->priv_flags |= IFF_NO_RX_HANDLER;
 }
 
 static int vrf_validate(struct nlattr *tb[], struct nlattr *data[],


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