net/mlx5_core: Managing root flow table
The root Flow Table for each Flow Table Type is defined,
by default, as the Flow Table with level 0.
In order not to use an empty flow tables and introduce new hops,
but still preserve space for flow-tables that have a priority
greater(lower number) than the current flow table, we introduce this
new set root flow table command.
This command tells the HW to start matching packets from the
assigned root flow table.
This command is used when we create new flow table with level lower than the
current lowest flow table or it is the first flow table.
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: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
index 5096f4f..d8b1195 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
@@ -38,6 +38,24 @@
#include "fs_cmd.h"
#include "mlx5_core.h"
+int mlx5_cmd_update_root_ft(struct mlx5_core_dev *dev,
+ struct mlx5_flow_table *ft)
+{
+ u32 in[MLX5_ST_SZ_DW(set_flow_table_root_in)];
+ u32 out[MLX5_ST_SZ_DW(set_flow_table_root_out)];
+
+ memset(in, 0, sizeof(in));
+
+ MLX5_SET(set_flow_table_root_in, in, opcode,
+ MLX5_CMD_OP_SET_FLOW_TABLE_ROOT);
+ MLX5_SET(set_flow_table_root_in, in, table_type, ft->type);
+ MLX5_SET(set_flow_table_root_in, in, table_id, ft->id);
+
+ memset(out, 0, sizeof(out));
+ return mlx5_cmd_exec_check_status(dev, in, sizeof(in), out,
+ sizeof(out));
+}
+
int mlx5_cmd_create_flow_table(struct mlx5_core_dev *dev,
enum fs_flow_table_type type, unsigned int level,
unsigned int log_size, unsigned int *table_id)