1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/mod_hdr.h b/drivers/net/ethernet/mellanox/mlx5/core/en/mod_hdr.h
new file mode 100644
index 000000000..b8dac418d
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/mod_hdr.h
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/* Copyright (c) 2020 Mellanox Technologies */
+
+#ifndef __MLX5E_EN_MOD_HDR_H__
+#define __MLX5E_EN_MOD_HDR_H__
+
+#include <linux/hashtable.h>
+#include <linux/mlx5/fs.h>
+
+#define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto)
+
+struct mlx5e_mod_hdr_handle;
+
+struct mlx5e_tc_mod_hdr_acts {
+	int num_actions;
+	int max_actions;
+	bool is_static;
+	void *actions;
+};
+
+#define DECLARE_MOD_HDR_ACTS_ACTIONS(name, len) \
+	u8 name[len][MLX5_MH_ACT_SZ] = {}
+
+#define DECLARE_MOD_HDR_ACTS(name, acts_arr) \
+	struct mlx5e_tc_mod_hdr_acts name = { \
+		.max_actions = ARRAY_SIZE(acts_arr), \
+		.is_static = true, \
+		.actions = acts_arr, \
+	}
+
+char *mlx5e_mod_hdr_alloc(struct mlx5_core_dev *mdev, int namespace,
+			  struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts);
+void mlx5e_mod_hdr_dealloc(struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts);
+char *mlx5e_mod_hdr_get_item(struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts, int pos);
+
+struct mlx5e_mod_hdr_handle *
+mlx5e_mod_hdr_attach(struct mlx5_core_dev *mdev,
+		     struct mod_hdr_tbl *tbl,
+		     enum mlx5_flow_namespace_type namespace,
+		     struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts);
+void mlx5e_mod_hdr_detach(struct mlx5_core_dev *mdev,
+			  struct mod_hdr_tbl *tbl,
+			  struct mlx5e_mod_hdr_handle *mh);
+struct mlx5_modify_hdr *mlx5e_mod_hdr_get(struct mlx5e_mod_hdr_handle *mh);
+
+void mlx5e_mod_hdr_tbl_init(struct mod_hdr_tbl *tbl);
+void mlx5e_mod_hdr_tbl_destroy(struct mod_hdr_tbl *tbl);
+
+static inline int mlx5e_mod_hdr_max_actions(struct mlx5_core_dev *mdev, int namespace)
+{
+	if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
+		return MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, max_modify_header_actions);
+	else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
+		return MLX5_CAP_FLOWTABLE_NIC_RX(mdev, max_modify_header_actions);
+}
+
+#endif /* __MLX5E_EN_MOD_HDR_H__ */