net/mlx5e: Check encap entry state when offloading tunneled flows
Encap entries cached by the driver could be invalidated due to tunnel destination neighbour state changes. When attempting to offload a flow that uses a cached encap entry, we must check the entry validity and defer the offloading if the entry exists but not valid. When EAGAIN is returned, the flow offloading to hardware takes place by the neigh update code when the tunnel destination neighbour becomes connected. Fixes: 232c0013 ("net/mlx5e: Add support to neighbour update flow") Signed-off-by: NVlad Buslov <vladbu@mellanox.com> Reviewed-by: NOr Gerlitz <ogerlitz@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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