/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/* Copyright (c) 2024 NVIDIA Corporation & Affiliates */

#ifndef MLX5HWS_RULE_H_
#define MLX5HWS_RULE_H_

enum {
        MLX5HWS_STE_CTRL_SZ = 20,
        MLX5HWS_ACTIONS_SZ = 12,
        MLX5HWS_MATCH_TAG_SZ = 32,
        MLX5HWS_JUMBO_TAG_SZ = 44,
};

enum mlx5hws_rule_status {
        MLX5HWS_RULE_STATUS_UNKNOWN,
        MLX5HWS_RULE_STATUS_CREATING,
        MLX5HWS_RULE_STATUS_CREATED,
        MLX5HWS_RULE_STATUS_UPDATING,
        MLX5HWS_RULE_STATUS_UPDATED,
        MLX5HWS_RULE_STATUS_DELETING,
        MLX5HWS_RULE_STATUS_DELETED,
        MLX5HWS_RULE_STATUS_FAILING,
        MLX5HWS_RULE_STATUS_FAILED,
};

enum mlx5hws_rule_move_state {
        MLX5HWS_RULE_RESIZE_STATE_IDLE,
        MLX5HWS_RULE_RESIZE_STATE_WRITING,
        MLX5HWS_RULE_RESIZE_STATE_DELETING,
};

enum mlx5hws_rule_jumbo_match_tag_offset {
        MLX5HWS_RULE_JUMBO_MATCH_TAG_OFFSET_DW0 = 8,
};

struct mlx5hws_rule_match_tag {
        union {
                u8 jumbo[MLX5HWS_JUMBO_TAG_SZ];
                struct {
                        u8 reserved[MLX5HWS_ACTIONS_SZ];
                        u8 match[MLX5HWS_MATCH_TAG_SZ];
                };
        };
};

struct mlx5hws_rule_resize_info {
        u32 rtc_0;
        u32 rtc_1;
        u32 rule_idx;
        u8 state;
        u8 ctrl_seg[MLX5HWS_WQE_SZ_GTA_CTRL]; /* Ctrl segment of STE: 48 bytes */
        u8 data_seg[MLX5HWS_WQE_SZ_GTA_DATA]; /* Data segment of STE: 64 bytes */
};

struct mlx5hws_rule {
        struct mlx5hws_matcher *matcher;
        union {
                struct mlx5hws_rule_match_tag tag;
                struct mlx5hws_rule_resize_info *resize_info;
        };
        struct mlx5hws_action_ste_chunk action_ste;
        struct mlx5hws_action_ste_chunk old_action_ste;
        u32 rtc_0; /* The RTC into which the STE was inserted */
        u32 rtc_1; /* The RTC into which the STE was inserted */
        u8 status; /* enum mlx5hws_rule_status */
        u8 pending_wqes;
        bool skip_delete; /* For complex rules - another rule with same tag
                           * still exists, so don't actually delete this rule.
                           */
};

void mlx5hws_rule_skip(struct mlx5hws_matcher *matcher, u32 flow_source,
                       bool *skip_rx, bool *skip_tx);

void mlx5hws_rule_free_action_ste(struct mlx5hws_action_ste_chunk *action_ste);

int mlx5hws_rule_move_hws_remove(struct mlx5hws_rule *rule,
                                 void *queue, void *user_data);

int mlx5hws_rule_move_hws_add(struct mlx5hws_rule *rule,
                              struct mlx5hws_rule_attr *attr);

bool mlx5hws_rule_move_in_progress(struct mlx5hws_rule *rule);

void mlx5hws_rule_clear_resize_info(struct mlx5hws_rule *rule);

#endif /* MLX5HWS_RULE_H_ */