switchdev: enforce no pvid flag in vlan ranges

We shouldn't allow BRIDGE_VLAN_INFO_PVID flag in VLAN ranges.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Elad Raz <eladr@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 7a9ab90..b8aaf82 100644 (file)
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -727,6 +727,9 @@ static int switchdev_port_br_afspec(struct net_device *dev,
                        if (vlan.vid_begin)
                                return -EINVAL;
                        vlan.vid_begin = vinfo->vid;
+                       /* don't allow range of pvids */
+                       if (vlan.flags & BRIDGE_VLAN_INFO_PVID)
+                               return -EINVAL;
                } else if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END) {
                        if (!vlan.vid_begin)
                                return -EINVAL;