net/mlx5e: TC preparation refactoring for routing update event

Following patch in series implement routing update event which requires
ability to modify rule match_to_reg modify header actions dynamically
during rule lifetime. In order to accommodate such behavior, refactor and
extend TC infrastructure in following ways:

- Modify mod_hdr infrastructure to preserve its parse attribute for whole
rule lifetime, instead of deallocating it after rule creation.

- Extend match_to_reg infrastructure with new function
mlx5e_tc_match_to_reg_set_and_get_id() that returns mod_hdr action id that
can be used afterwards to update the action, and
mlx5e_tc_match_to_reg_mod_hdr_change() that can modify existing actions by
its id.

- Extend tun API with new functions mlx5e_tc_tun_update_header_ipv{4|6}()
that are used to updated existing encap entry tunnel header.

Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Dmytro Linkin <dlinkin@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
index 5434bbb9a217..9042e64a96ca 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
@@ -214,6 +214,11 @@ int mlx5e_tc_match_to_reg_set(struct mlx5_core_dev *mdev,
 			      enum mlx5e_tc_attr_to_reg type,
 			      u32 data);
 
+void mlx5e_tc_match_to_reg_mod_hdr_change(struct mlx5_core_dev *mdev,
+					  struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
+					  enum mlx5e_tc_attr_to_reg type,
+					  int act_id, u32 data);
+
 void mlx5e_tc_match_to_reg_match(struct mlx5_flow_spec *spec,
 				 enum mlx5e_tc_attr_to_reg type,
 				 u32 data,
@@ -224,6 +229,16 @@ void mlx5e_tc_match_to_reg_get_match(struct mlx5_flow_spec *spec,
 				     u32 *data,
 				     u32 *mask);
 
+int mlx5e_tc_match_to_reg_set_and_get_id(struct mlx5_core_dev *mdev,
+					 struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
+					 enum mlx5_flow_namespace_type ns,
+					 enum mlx5e_tc_attr_to_reg type,
+					 u32 data);
+
+int mlx5e_tc_add_flow_mod_hdr(struct mlx5e_priv *priv,
+			      struct mlx5e_tc_flow_parse_attr *parse_attr,
+			      struct mlx5e_tc_flow *flow);
+
 int alloc_mod_hdr_actions(struct mlx5_core_dev *mdev,
 			  int namespace,
 			  struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts);