net/mlx5_core: Flow steering tree initialization

Flow steering initialization is based on static tree which
illustrates the flow steering tree when the driver is loaded. The
initialization considers the max supported flow table level of the device,
a minimum of 2 kernel flow tables(vlan and mac) are required to have
kernel flow table functionality.

The tree structures when the driver is loaded:

		root_namespace(receive nic)
			  |
		priority-0 (kernel priority)
			  |
		namespace(kernel namespace)
			  |
		priority-0 (flow tables priority)

In the following patches, When the EN driver will use the flow steering
API, it create two flow tables and their flow groups under
priority-0(flow tables priority).

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h
index 6c27b8ef42b7..4ebb97fd5544 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h
@@ -46,6 +46,7 @@ enum fs_node_type {
 
 enum fs_flow_table_type {
 	FS_FT_NIC_RX	 = 0x0,
+	FS_FT_FDB	 = 0X4,
 };
 
 enum fs_fte_status {
@@ -125,6 +126,9 @@ struct mlx5_flow_root_namespace {
 	struct mlx5_core_dev		*dev;
 };
 
+int mlx5_init_fs(struct mlx5_core_dev *dev);
+void mlx5_cleanup_fs(struct mlx5_core_dev *dev);
+
 #define fs_get_obj(v, _node)  {v = container_of((_node), typeof(*v), node); }
 
 #define fs_list_for_each_entry(pos, root)		\