#ifndef _SCE_H
#define _SCE_H

#ifdef __cpluscplus
extern "C"
{
#endif

#include "utils.h"
#include "policy.h"
#include "packet_io.h"
#include "session_table.h"

/******************************************************************************
 * Struct For Global
 ******************************************************************************/

struct global_metrics
{
    struct throughput_metrics dev_endpoint_rx;       // 累计值
    struct throughput_metrics dev_endpoint_tx;       // 累计值
    struct throughput_metrics dev_endpoint_err_drop; // 累计值

    struct throughput_metrics dev_nf_interface_rx;         // 累计值
    struct throughput_metrics dev_nf_interface_tx;         // 累计值
    struct throughput_metrics dev_nf_interface_err_bypass; // 累计值

    struct throughput_metrics hit_block_policy;  // 累计值
    struct throughput_metrics hit_bypass_policy; // 累计值

    uint64_t session_nums; // 瞬时值
};

struct global_metrics *global_metrics_create();
void global_metrics_destory(struct global_metrics *metrics);
void global_metrics_dump(struct global_metrics *metrics);

/******************************************************************************
 * Struct For Thread
 ******************************************************************************/

struct thread_ctx
{
  	pthread_t tid;
    int thread_index;
    struct session_table *session_table;

    struct packet_io *ref_io;
    struct global_metrics *ref_metrics;
    struct policy_enforcer *ref_enforcer;
    struct sce_ctx *ref_sce_ctx;

    int session_table_need_reset;
};

/******************************************************************************
 * Struct For Session
 ******************************************************************************/

struct packet_info
{
    int dir_is_e2i;
    struct addr_tuple4 tuple4;
    char *addr_string;

    char *header_data;
    int header_len;
};

struct session_ctx
{
    struct fixed_num_array policy_ids;
    uint64_t session_id;

    char raw_pkt_i2e_route_ctx[64];
    char raw_pkt_e2i_route_ctx[64];

    struct sids raw_pkt_i2e_sids;
    struct sids raw_pkt_e2i_sids;
    
    // depending on first control packet
    struct packet_info first_ctrl_pkt;
    struct selected_chaining *chaining;
};

struct session_ctx *session_ctx_new();
void session_ctx_free(struct session_ctx *ctx);

/******************************************************************************
 * Struct For SCE
 ******************************************************************************/

struct sce_ctx
{
    int firewall_sids;
    int nr_worker_threads;

    struct packet_io *io;
    struct global_metrics *metrics;
    struct policy_enforcer *enforcer;
    struct thread_ctx work_threads[128];
};

struct sce_ctx *sce_ctx_create(const char *profile);
void sce_ctx_destory(struct sce_ctx *ctx);

#ifdef __cpluscplus
}
#endif

#endif