For ConnectX-6 in FDB domain, pop and push VLAN
on both ingress and egress directions are supported.
For ConnectX-6 in NIC domain, and ConnectX-5 in both FWD and NIC domain,
pop VLAN is only supported on ingress direction,
push VLAN is only supported on egress direction.
Signed-off-by: Dong Zhou <dongzhou@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>