/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/* Copyright (c) 2020 Mellanox Technologies. */

#ifndef __ML5_FS_TTC_H__
#define __ML5_FS_TTC_H__

#include <linux/mlx5/fs.h>

enum mlx5_traffic_types {
        MLX5_TT_IPV4_TCP,
        MLX5_TT_IPV6_TCP,
        MLX5_TT_IPV4_UDP,
        MLX5_TT_IPV6_UDP,
        MLX5_TT_IPV4_IPSEC_AH,
        MLX5_TT_IPV6_IPSEC_AH,
        MLX5_TT_IPV4_IPSEC_ESP,
        MLX5_TT_IPV6_IPSEC_ESP,
        MLX5_TT_IPV4,
        MLX5_TT_IPV6,
        MLX5_TT_ANY,
        MLX5_TT_DECRYPTED_ESP_OUTER_IPV4_TCP,
        MLX5_TT_DECRYPTED_ESP_OUTER_IPV6_TCP,
        MLX5_TT_DECRYPTED_ESP_OUTER_IPV4_UDP,
        MLX5_TT_DECRYPTED_ESP_OUTER_IPV6_UDP,
        MLX5_TT_DECRYPTED_ESP_INNER_IPV4_TCP,
        MLX5_TT_DECRYPTED_ESP_INNER_IPV6_TCP,
        MLX5_TT_DECRYPTED_ESP_INNER_IPV4_UDP,
        MLX5_TT_DECRYPTED_ESP_INNER_IPV6_UDP,
        MLX5_NUM_TT,
        MLX5_NUM_INDIR_TIRS = MLX5_TT_ANY,
};

enum mlx5_tunnel_types {
        MLX5_TT_IPV4_GRE,
        MLX5_TT_IPV6_GRE,
        MLX5_TT_IPV4_IPIP,
        MLX5_TT_IPV6_IPIP,
        MLX5_TT_IPV4_IPV6,
        MLX5_TT_IPV6_IPV6,
        MLX5_NUM_TUNNEL_TT,
};

struct mlx5_ttc_rule {
        struct mlx5_flow_handle *rule;
        struct mlx5_flow_destination default_dest;
};

struct mlx5_ttc_table;

struct ttc_params {
        enum mlx5_flow_namespace_type ns_type;
        struct mlx5_flow_table_attr ft_attr;
        struct mlx5_flow_destination dests[MLX5_NUM_TT];
        DECLARE_BITMAP(ignore_dests, MLX5_NUM_TT);
        bool   inner_ttc;
        DECLARE_BITMAP(ignore_tunnel_dests, MLX5_NUM_TUNNEL_TT);
        struct mlx5_flow_destination tunnel_dests[MLX5_NUM_TUNNEL_TT];
        bool ipsec_rss;
};

const char *mlx5_ttc_get_name(enum mlx5_traffic_types tt);
struct mlx5_flow_table *mlx5_get_ttc_flow_table(struct mlx5_ttc_table *ttc);

struct mlx5_ttc_table *mlx5_create_ttc_table(struct mlx5_core_dev *dev,
                                             struct ttc_params *params);
void mlx5_destroy_ttc_table(struct mlx5_ttc_table *ttc);

struct mlx5_ttc_table *mlx5_create_inner_ttc_table(struct mlx5_core_dev *dev,
                                                   struct ttc_params *params);

int mlx5_ttc_fwd_dest(struct mlx5_ttc_table *ttc, enum mlx5_traffic_types type,
                      struct mlx5_flow_destination *new_dest);
struct mlx5_flow_destination
mlx5_ttc_get_default_dest(struct mlx5_ttc_table *ttc,
                          enum mlx5_traffic_types type);
int mlx5_ttc_fwd_default_dest(struct mlx5_ttc_table *ttc,
                              enum mlx5_traffic_types type);

bool mlx5_tunnel_inner_ft_supported(struct mlx5_core_dev *mdev);
u8 mlx5_get_proto_by_tunnel_type(enum mlx5_tunnel_types tt);

bool mlx5_ttc_has_esp_flow_group(struct mlx5_ttc_table *ttc);
int mlx5_ttc_create_ipsec_rules(struct mlx5_ttc_table *ttc,
                                struct mlx5_ttc_table *inner_ttc);
void mlx5_ttc_destroy_ipsec_rules(struct mlx5_ttc_table *ttc);
static inline bool mlx5_ttc_is_decrypted_esp_tt(enum mlx5_traffic_types tt)
{
        return tt >= MLX5_TT_DECRYPTED_ESP_OUTER_IPV4_TCP &&
               tt <= MLX5_TT_DECRYPTED_ESP_INNER_IPV6_UDP;
}

#endif /* __MLX5_FS_TTC_H__ */