/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */ 

/*! \file flexran_agent_defs.h
 * \brief FlexRAN agent common definitions 
 * \author Navid Nikaein and Xenofon Foukas and shahab SHARIAT BAGHERI
 * \date 2017
 * \version 0.1
 */
#ifndef FLEXRAN_AGENT_DEFS_H_
#define FLEXRAN_AGENT_DEFS_H_

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <string.h>
#include <stdbool.h>
#include <time.h>

#include "link_manager.h"

#define NUM_MAX_ENB 2
#define NUM_MAX_DRB 8
#define NUM_MAX_SRB 3
#define NUM_MAX_UE 2048
#define DEFAULT_DRB 3
#define DEFAULT_FLEXRAN_AGENT_IPv4_ADDRESS "127.0.0.1"
#define DEFAULT_FLEXRAN_AGENT_PORT          2210
#define DEFAULT_FLEXRAN_AGENT_CACHE        "/mnt/oai_agent_cache"

typedef enum {
  
  FLEXRAN_AGENT_DEFAULT=0,
  
  FLEXRAN_AGENT_PHY=1,
  FLEXRAN_AGENT_MAC=2,
  FLEXRAN_AGENT_RLC=3,
  FLEXRAN_AGENT_PDCP=4,
  FLEXRAN_AGENT_RRC=5,
  FLEXRAN_AGENT_S1AP=6,
  FLEXRAN_AGENT_GTP=7,
  FLEXRAN_AGENT_X2AP=8,

  FLEXRAN_AGENT_MAX=9,
    
} agent_id_t;

typedef enum {
  /* no action  */
  FLEXRAN_AGENT_ACTION_NONE = 0x0,

  /* send action  */
  FLEXRAN_AGENT_ACTION_SEND = 0x1,

 /* apply action  */
  FLEXRAN_AGENT_ACTION_APPLY = 0x2,

  /* clear action  */
  FLEXRAN_AGENT_ACTION_CLEAR = 0x4,

  /* write action  */
  FLEXRAN_AGENT_ACTION_WRITE = 0x8,

  /* filter action  */
  FLEXRAN_AGENT_ACTION_FILTER = 0x10,

  /* preprocess action  */
  FLEXRAN_AGENT_ACTION_PREPROCESS = 0x20,

  /* meter action  */
  FLEXRAN_AGENT_ACTION_METER = 0x40,
  
  /* Max number of states available */
  FLEXRAN_AGENT_ACTION_MAX = 0x7f,
} agent_action_t;


typedef enum {
  
  RAN_LTE_OAI= 0,
  
 /* Max number of states available */
 RAN_NAME_MAX = 0x7f,
} ran_name_t;

typedef uint8_t xid_t;  
typedef uint16_t mid_t;  // module or enb id 
typedef uint8_t lcid_t;
typedef int32_t  err_code_t; 


/*---------Timer Enums --------- */

typedef enum {
  /* oneshot timer:  */
  FLEXRAN_AGENT_TIMER_TYPE_ONESHOT = 0,

  /* periodic timer  */
  FLEXRAN_AGENT_TIMER_TYPE_PERIODIC = 1,

  /* Inactive state: initial state for any timer. */
  FLEXRAN_AGENT_TIMER_TYPE_EVENT_DRIVEN = 2,
  
  /* Max number of states available */
  FLEXRAN_AGENT_TIMER_TYPE_MAX,
} flexran_agent_timer_type_t;


typedef enum {
  /* Inactive state: initial state for any timer. */
  FLEXRAN_AGENT_TIMER_STATE_INACTIVE = 0x0,

  /* Inactive state: initial state for any timer. */
  FLEXRAN_AGENT_TIMER_STATE_ACTIVE = 0x1,

  /* Inactive state: initial state for any timer. */
  FLEXRAN_AGENT_TIMER_STATE_STOPPED = 0x2,
  
  /* Max number of states available */
  FLEXRAN_AGENT_TIMER_STATE_MAX,
} flexran_agent_timer_state_t;

#define FLEXRAN_CAP_LOPHY 1
#define FLEXRAN_CAP_HIPHY 2
#define FLEXRAN_CAP_LOMAC 4
#define FLEXRAN_CAP_HIMAC 8
#define FLEXRAN_CAP_RLC   16
#define FLEXRAN_CAP_PDCP  32
#define FLEXRAN_CAP_SDAP  64
#define FLEXRAN_CAP_RRC   128

typedef enum {
  ENB_NORMAL_OPERATION = 0x0,
  ENB_WAIT             = 0x1,
  ENB_MAKE_WAIT        = 0x2,
} flexran_enb_state_t;

typedef struct {
  /* general info */ 
  int      enabled;
  char    *interface_name;
  char    *remote_ipv4_addr;
  uint16_t remote_port;
  char    *cache_name;

  mid_t    mod_id;
  uint64_t agent_id;
  uint8_t  capability_mask;

  /* lock for waiting before starting or soft-restart */
  pthread_cond_t      cond_node_ctrl;
  pthread_mutex_t     mutex_node_ctrl;
  flexran_enb_state_t node_ctrl_state;

  /* stats */

  uint32_t total_rx_msg;
  uint32_t total_tx_msg;
   
  uint32_t rx_msg[NUM_MAX_ENB];
  uint32_t tx_msg[NUM_MAX_ENB];

} flexran_agent_info_t;


/*
rrc triggering
 */


typedef struct {
   char   * trigger_policy;
   uint32_t report_interval;
   uint32_t report_amount;

} agent_reconf_rrc;


/* These structs will be used to give
   instructions for the type of stats reports
   we need to create */


typedef struct {
  uint16_t ue_rnti;
  uint32_t ue_report_flags; /* Indicates the report elements
             required for this UE id. See
             FlexRAN specification 1.2.4.2 */
} ue_report_type_t;

typedef struct {
  uint16_t cc_id;
  uint32_t cc_report_flags; /* Indicates the report elements
            required for this CC index. See
            FlexRAN specification 1.2.4.3 */
} cc_report_type_t;

typedef struct {
  int nr_ue;
  ue_report_type_t *ue_report_type;
  int nr_cc;
  cc_report_type_t *cc_report_type;
} report_config_t;

typedef struct stats_request_config_s{
  uint8_t report_type;
  uint8_t report_frequency;
  uint16_t period; /*In number of subframes*/
  report_config_t *config;
} stats_request_config_t;

#endif 
