net/mlx5: Add support to create match definer

Introduce new APIs to create and destroy flow matcher
for given format id.

Flow match definer object is used for defining the fields and
mask used for the hash calculation. User should mask the desired
fields like done in the match criteria.

This object is assigned to flow group of type hash. In this flow
group type, packets lookup is done based on the hash result.

This patch also adds the required bits to create such flow group.

Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
index caefdb7dfefe..2c82dc118460 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
@@ -185,6 +185,20 @@ static int mlx5_cmd_set_slave_root_fdb(struct mlx5_core_dev *master,
 	return mlx5_cmd_exec(slave, in, sizeof(in), out, sizeof(out));
 }
 
+static int
+mlx5_cmd_stub_destroy_match_definer(struct mlx5_flow_root_namespace *ns,
+				    int definer_id)
+{
+	return 0;
+}
+
+static int
+mlx5_cmd_stub_create_match_definer(struct mlx5_flow_root_namespace *ns,
+				   u16 format_id, u32 *match_mask)
+{
+	return 0;
+}
+
 static int mlx5_cmd_update_root_ft(struct mlx5_flow_root_namespace *ns,
 				   struct mlx5_flow_table *ft, u32 underlay_qpn,
 				   bool disconnect)
@@ -909,6 +923,45 @@ static void mlx5_cmd_modify_header_dealloc(struct mlx5_flow_root_namespace *ns,
 	mlx5_cmd_exec_in(dev, dealloc_modify_header_context, in);
 }
 
+static int mlx5_cmd_destroy_match_definer(struct mlx5_flow_root_namespace *ns,
+					  int definer_id)
+{
+	u32 in[MLX5_ST_SZ_DW(general_obj_in_cmd_hdr)] = {};
+	u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
+
+	MLX5_SET(general_obj_in_cmd_hdr, in, opcode,
+		 MLX5_CMD_OP_DESTROY_GENERAL_OBJECT);
+	MLX5_SET(general_obj_in_cmd_hdr, in, obj_type,
+		 MLX5_OBJ_TYPE_MATCH_DEFINER);
+	MLX5_SET(general_obj_in_cmd_hdr, in, obj_id, definer_id);
+
+	return mlx5_cmd_exec(ns->dev, in, sizeof(in), out, sizeof(out));
+}
+
+static int mlx5_cmd_create_match_definer(struct mlx5_flow_root_namespace *ns,
+					 u16 format_id, u32 *match_mask)
+{
+	u32 out[MLX5_ST_SZ_DW(create_match_definer_out)] = {};
+	u32 in[MLX5_ST_SZ_DW(create_match_definer_in)] = {};
+	struct mlx5_core_dev *dev = ns->dev;
+	void *ptr;
+	int err;
+
+	MLX5_SET(create_match_definer_in, in, general_obj_in_cmd_hdr.opcode,
+		 MLX5_CMD_OP_CREATE_GENERAL_OBJECT);
+	MLX5_SET(create_match_definer_in, in, general_obj_in_cmd_hdr.obj_type,
+		 MLX5_OBJ_TYPE_MATCH_DEFINER);
+
+	ptr = MLX5_ADDR_OF(create_match_definer_in, in, obj_context);
+	MLX5_SET(match_definer, ptr, format_id, format_id);
+
+	ptr = MLX5_ADDR_OF(match_definer, ptr, match_mask);
+	memcpy(ptr, match_mask, MLX5_FLD_SZ_BYTES(match_definer, match_mask));
+
+	err = mlx5_cmd_exec_inout(dev, create_match_definer, in, out);
+	return err ? err : MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
+}
+
 static const struct mlx5_flow_cmds mlx5_flow_cmds = {
 	.create_flow_table = mlx5_cmd_create_flow_table,
 	.destroy_flow_table = mlx5_cmd_destroy_flow_table,
@@ -923,6 +976,8 @@ static const struct mlx5_flow_cmds mlx5_flow_cmds = {
 	.packet_reformat_dealloc = mlx5_cmd_packet_reformat_dealloc,
 	.modify_header_alloc = mlx5_cmd_modify_header_alloc,
 	.modify_header_dealloc = mlx5_cmd_modify_header_dealloc,
+	.create_match_definer = mlx5_cmd_create_match_definer,
+	.destroy_match_definer = mlx5_cmd_destroy_match_definer,
 	.set_peer = mlx5_cmd_stub_set_peer,
 	.create_ns = mlx5_cmd_stub_create_ns,
 	.destroy_ns = mlx5_cmd_stub_destroy_ns,
@@ -942,6 +997,8 @@ static const struct mlx5_flow_cmds mlx5_flow_cmd_stubs = {
 	.packet_reformat_dealloc = mlx5_cmd_stub_packet_reformat_dealloc,
 	.modify_header_alloc = mlx5_cmd_stub_modify_header_alloc,
 	.modify_header_dealloc = mlx5_cmd_stub_modify_header_dealloc,
+	.create_match_definer = mlx5_cmd_stub_create_match_definer,
+	.destroy_match_definer = mlx5_cmd_stub_destroy_match_definer,
 	.set_peer = mlx5_cmd_stub_set_peer,
 	.create_ns = mlx5_cmd_stub_create_ns,
 	.destroy_ns = mlx5_cmd_stub_destroy_ns,