net/mlx5: LAG demux flow table support

Add interfaces to allow the creation and destruction of a
LAG demux flow table.

It is a special flow table used during LAG for redirecting
non user-mode packets from PF0 to PF1 root ft, if a packet was
received on phys port two.

Signed-off-by: Aviv Heller <avivh@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
diff --git a/include/linux/mlx5/fs.h b/include/linux/mlx5/fs.h
index e036d60..7edfe0b 100644
--- a/include/linux/mlx5/fs.h
+++ b/include/linux/mlx5/fs.h
@@ -106,6 +106,9 @@
 			     int prio,
 			     int num_flow_table_entries,
 			     u32 level, u16 vport);
+struct mlx5_flow_table *mlx5_create_lag_demux_flow_table(
+					       struct mlx5_flow_namespace *ns,
+					       int prio, u32 level);
 int mlx5_destroy_flow_table(struct mlx5_flow_table *ft);
 
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