enb_agent_mac.c 48.8 KB
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/*******************************************************************************
    OpenAirInterface
    Copyright(c) 1999 - 2014 Eurecom

    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.


    OpenAirInterface is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with OpenAirInterface.The full GNU General Public License is
   included in this distribution in the file called "COPYING". If not,
   see <http://www.gnu.org/licenses/>.

  Contact Information
  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
  OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr

  Address      : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.

 *******************************************************************************/

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/*! \file enb_agent_mac.c
 * \brief enb agent message handler for MAC layer
 * \author Navid Nikaein and Xenofon Foukas
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 * \date 2016
 * \version 0.1
 */

#include "enb_agent_mac.h"
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#include "enb_agent_extern.h"
#include "enb_agent_common.h"
#include "enb_agent_mac_internal.h"
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#include "LAYER2/MAC/proto.h"
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#include "LAYER2/MAC/enb_agent_mac_proto.h"
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#include "log.h"

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/*Flags showing if a mac agent has already been registered*/
unsigned int mac_agent_registered[NUM_MAX_ENB];

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/*Array containing the Agent-MAC interfaces*/
AGENT_MAC_xface *agent_mac_xface[NUM_MAX_ENB];

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int enb_agent_mac_handle_stats(mid_t mod_id, const void *params, Protocol__ProgranMessage **msg){
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  // TODO: Must deal with sanitization of input
  // TODO: Must check if RNTIs and cell ids of the request actually exist
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  // TODO: Must resolve conflicts among stats requests
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  int i;
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  void *buffer;
  int size;
  err_code_t err_code;
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  xid_t xid;
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  uint32_t usec_interval, sec_interval;
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  //TODO: We do not deal with multiple CCs at the moment and eNB id is 0
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  int cc_id = 0;
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  int enb_id = mod_id;
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  //eNB_MAC_INST *eNB = &eNB_mac_inst[enb_id];
  //UE_list_t *eNB_UE_list=  &eNB->UE_list;
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  report_config_t report_config;

  uint32_t ue_flags = 0;
  uint32_t c_flags = 0;

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  Protocol__ProgranMessage *input = (Protocol__ProgranMessage *)params;

  Protocol__PrpStatsRequest *stats_req = input->stats_request_msg;
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  xid = (stats_req->header)->xid;
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  // Check the type of request that is made
  switch(stats_req->body_case) {
  case PROTOCOL__PRP_STATS_REQUEST__BODY_COMPLETE_STATS_REQUEST: ;
    Protocol__PrpCompleteStatsRequest *comp_req = stats_req->complete_stats_request;
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    if (comp_req->report_frequency == PROTOCOL__PRP_STATS_REPORT_FREQ__PRSRF_OFF) {
      /*Disable both periodic and continuous updates*/
      enb_agent_disable_cont_mac_stats_update(mod_id);
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      enb_agent_destroy_timer_by_task_id(xid);
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      *msg = NULL;
      return 0;
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    } else { //One-off, periodical or continuous reporting
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      //Set the proper flags
      ue_flags = comp_req->ue_report_flags;
      c_flags = comp_req->cell_report_flags;
      //Create a list of all eNB RNTIs and cells
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      //Set the number of UEs and create list with their RNTIs stats configs
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      report_config.nr_ue = get_num_ues(mod_id); //eNB_UE_list->num_UEs
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      report_config.ue_report_type = (ue_report_type_t *) malloc(sizeof(ue_report_type_t) * report_config.nr_ue);
      if (report_config.ue_report_type == NULL) {
	// TODO: Add appropriate error code
	err_code = -100;
	goto error;
      }
      for (i = 0; i < report_config.nr_ue; i++) {
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	report_config.ue_report_type[i].ue_rnti = get_ue_crnti(enb_id, i); //eNB_UE_list->eNB_UE_stats[UE_PCCID(enb_id,i)][i].crnti;
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	report_config.ue_report_type[i].ue_report_flags = ue_flags;
      }
      //Set the number of CCs and create a list with the cell stats configs
      report_config.nr_cc = MAX_NUM_CCs;
      report_config.cc_report_type = (cc_report_type_t *) malloc(sizeof(cc_report_type_t) * report_config.nr_cc);
      if (report_config.cc_report_type == NULL) {
	// TODO: Add appropriate error code
	err_code = -100;
	goto error;
      }
      for (i = 0; i < report_config.nr_cc; i++) {
	//TODO: Must fill in the proper cell ids
	report_config.cc_report_type[i].cc_id = i;
	report_config.cc_report_type[i].cc_report_flags = c_flags;
      }
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      /* Check if request was periodical */
      if (comp_req->report_frequency == PROTOCOL__PRP_STATS_REPORT_FREQ__PRSRF_PERIODICAL) {
	/* Create a one off progran message as an argument for the periodical task */
	Protocol__ProgranMessage *timer_msg;
	stats_request_config_t request_config;
	request_config.report_type = PROTOCOL__PRP_STATS_TYPE__PRST_COMPLETE_STATS;
	request_config.report_frequency = PROTOCOL__PRP_STATS_REPORT_FREQ__PRSRF_ONCE;
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	request_config.period = 0;
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	/* Need to make sure that the ue flags are saved (Bug) */
	if (report_config.nr_ue == 0) {
	  report_config.nr_ue = 1;
	  report_config.ue_report_type = (ue_report_type_t *) malloc(sizeof(ue_report_type_t));
	   if (report_config.ue_report_type == NULL) {
	     // TODO: Add appropriate error code
	     err_code = -100;
	     goto error;
	   }
	   report_config.ue_report_type[0].ue_rnti = 0; // Dummy value
	   report_config.ue_report_type[0].ue_report_flags = ue_flags;
	}
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	request_config.config = &report_config;
	enb_agent_mac_stats_request(enb_id, xid, &request_config, &timer_msg);
	/* Create a timer */
	long timer_id = 0;
	enb_agent_timer_args_t *timer_args;
	timer_args = malloc(sizeof(enb_agent_timer_args_t));
	memset (timer_args, 0, sizeof(enb_agent_timer_args_t));
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	timer_args->mod_id = enb_id;
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	timer_args->msg = timer_msg;
	/*Convert subframes to usec time*/
	usec_interval = 1000*comp_req->sf;
	sec_interval = 0;
	/*add seconds if required*/
	if (usec_interval >= 1000*1000) {
	  sec_interval = usec_interval/(1000*1000);
	  usec_interval = usec_interval%(1000*1000);
	}
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	enb_agent_create_timer(sec_interval, usec_interval, ENB_AGENT_DEFAULT, enb_id, ENB_AGENT_TIMER_TYPE_PERIODIC, xid, enb_agent_handle_timed_task,(void*) timer_args, &timer_id);
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      } else if (comp_req->report_frequency == PROTOCOL__PRP_STATS_REPORT_FREQ__PRSRF_CONTINUOUS) {
	/*If request was for continuous updates, disable the previous configuration and
	  set up a new one*/
	enb_agent_disable_cont_mac_stats_update(mod_id);
	stats_request_config_t request_config;
	request_config.report_type = PROTOCOL__PRP_STATS_TYPE__PRST_COMPLETE_STATS;
	request_config.report_frequency = PROTOCOL__PRP_STATS_REPORT_FREQ__PRSRF_ONCE;
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	request_config.period = 0;
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	/* Need to make sure that the ue flags are saved (Bug) */
	if (report_config.nr_ue == 0) {
	  report_config.nr_ue = 1;
	  report_config.ue_report_type = (ue_report_type_t *) malloc(sizeof(ue_report_type_t));
	  if (report_config.ue_report_type == NULL) {
	    // TODO: Add appropriate error code
	    err_code = -100;
	    goto error;
	  }
	  report_config.ue_report_type[0].ue_rnti = 0; // Dummy value
	  report_config.ue_report_type[0].ue_report_flags = ue_flags;
	}
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	request_config.config = &report_config;
	enb_agent_enable_cont_mac_stats_update(enb_id, xid, &request_config);
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      }
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    }
    break;
  case PROTOCOL__PRP_STATS_REQUEST__BODY_CELL_STATS_REQUEST:;
    Protocol__PrpCellStatsRequest *cell_req = stats_req->cell_stats_request;
    // UE report config will be blank
    report_config.nr_ue = 0;
    report_config.ue_report_type = NULL;
    report_config.nr_cc = cell_req->n_cell;
    report_config.cc_report_type = (cc_report_type_t *) malloc(sizeof(cc_report_type_t) * report_config.nr_cc);
    if (report_config.cc_report_type == NULL) {
      // TODO: Add appropriate error code
      err_code = -100;
      goto error;
    }
    for (i = 0; i < report_config.nr_cc; i++) {
	//TODO: Must fill in the proper cell ids
      report_config.cc_report_type[i].cc_id = cell_req->cell[i];
      report_config.cc_report_type[i].cc_report_flags = cell_req->flags;
    }
    break;
  case PROTOCOL__PRP_STATS_REQUEST__BODY_UE_STATS_REQUEST:;
    Protocol__PrpUeStatsRequest *ue_req = stats_req->ue_stats_request;
    // Cell report config will be blank
    report_config.nr_cc = 0;
    report_config.cc_report_type = NULL;
    report_config.nr_ue = ue_req->n_rnti;
    report_config.ue_report_type = (ue_report_type_t *) malloc(sizeof(ue_report_type_t) * report_config.nr_ue);
    if (report_config.ue_report_type == NULL) {
      // TODO: Add appropriate error code
      err_code = -100;
      goto error;
    }
    for (i = 0; i < report_config.nr_ue; i++) {
      report_config.ue_report_type[i].ue_rnti = ue_req->rnti[i];
      report_config.ue_report_type[i].ue_report_flags = ue_req->flags;
    }
    break;
  default:
    //TODO: Add appropriate error code
    err_code = -100;
    goto error;
  }
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  if (enb_agent_mac_stats_reply(enb_id, xid, &report_config, msg) < 0 ){
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    err_code = PROTOCOL__PROGRAN_ERR__MSG_BUILD;
    goto error;
  }

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  free(report_config.ue_report_type);
  free(report_config.cc_report_type);

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  return 0;

 error :
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  LOG_E(ENB_AGENT, "errno %d occured\n", err_code);
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  return err_code;
}

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int enb_agent_mac_stats_request(mid_t mod_id,
				xid_t xid,
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				const stats_request_config_t *report_config,
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				Protocol__ProgranMessage **msg) {
  Protocol__PrpHeader *header;
  int i;
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  if (prp_create_header(xid, PROTOCOL__PRP_TYPE__PRPT_STATS_REQUEST, &header) != 0)
    goto error;
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  Protocol__PrpStatsRequest *stats_request_msg;
  stats_request_msg = malloc(sizeof(Protocol__PrpStatsRequest));
  if(stats_request_msg == NULL)
    goto error;

  protocol__prp_stats_request__init(stats_request_msg);
  stats_request_msg->header = header;
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  stats_request_msg->type = report_config->report_type;
  stats_request_msg->has_type = 1;
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  switch (report_config->report_type) {
  case PROTOCOL__PRP_STATS_TYPE__PRST_COMPLETE_STATS:
    stats_request_msg->body_case =  PROTOCOL__PRP_STATS_REQUEST__BODY_COMPLETE_STATS_REQUEST;
    Protocol__PrpCompleteStatsRequest *complete_stats;
    complete_stats = malloc(sizeof(Protocol__PrpCompleteStatsRequest));
    if(complete_stats == NULL)
      goto error;
    protocol__prp_complete_stats_request__init(complete_stats);
    complete_stats->report_frequency = report_config->report_frequency;
    complete_stats->has_report_frequency = 1;
    complete_stats->sf = report_config->period;
    complete_stats->has_sf = 1;
    complete_stats->has_cell_report_flags = 1;
    complete_stats->has_ue_report_flags = 1;
    if (report_config->config->nr_cc > 0) {
      complete_stats->cell_report_flags = report_config->config->cc_report_type[0].cc_report_flags;
    }
    if (report_config->config->nr_ue > 0) {
      complete_stats->ue_report_flags = report_config->config->ue_report_type[0].ue_report_flags;
    }
    stats_request_msg->complete_stats_request = complete_stats;
    break;
  case  PROTOCOL__PRP_STATS_TYPE__PRST_CELL_STATS:
    stats_request_msg->body_case = PROTOCOL__PRP_STATS_REQUEST__BODY_CELL_STATS_REQUEST;
     Protocol__PrpCellStatsRequest *cell_stats;
     cell_stats = malloc(sizeof(Protocol__PrpCellStatsRequest));
    if(cell_stats == NULL)
      goto error;
    protocol__prp_cell_stats_request__init(cell_stats);
    cell_stats->n_cell = report_config->config->nr_cc;
    cell_stats->has_flags = 1;
    if (cell_stats->n_cell > 0) {
      uint32_t *cells;
      cells = (uint32_t *) malloc(sizeof(uint32_t)*cell_stats->n_cell);
      for (i = 0; i < cell_stats->n_cell; i++) {
	cells[i] = report_config->config->cc_report_type[i].cc_id;
      }
      cell_stats->cell = cells;
      cell_stats->flags = report_config->config->cc_report_type[i].cc_report_flags;
    }
    stats_request_msg->cell_stats_request = cell_stats;
    break;
  case PROTOCOL__PRP_STATS_TYPE__PRST_UE_STATS:
    stats_request_msg->body_case = PROTOCOL__PRP_STATS_REQUEST__BODY_UE_STATS_REQUEST;
     Protocol__PrpUeStatsRequest *ue_stats;
     ue_stats = malloc(sizeof(Protocol__PrpUeStatsRequest));
    if(ue_stats == NULL)
      goto error;
    protocol__prp_ue_stats_request__init(ue_stats);
    ue_stats->n_rnti = report_config->config->nr_ue;
    ue_stats->has_flags = 1;
    if (ue_stats->n_rnti > 0) {
      uint32_t *ues;
      ues = (uint32_t *) malloc(sizeof(uint32_t)*ue_stats->n_rnti);
      for (i = 0; i < ue_stats->n_rnti; i++) {
	ues[i] = report_config->config->ue_report_type[i].ue_rnti;
      }
      ue_stats->rnti = ues;
      ue_stats->flags = report_config->config->ue_report_type[i].ue_report_flags;
    }
    stats_request_msg->ue_stats_request = ue_stats;
    break;
  default:
    goto error;
  }
  *msg = malloc(sizeof(Protocol__ProgranMessage));
  if(*msg == NULL)
    goto error;
  protocol__progran_message__init(*msg);
  (*msg)->msg_case = PROTOCOL__PROGRAN_MESSAGE__MSG_STATS_REQUEST_MSG;
  (*msg)->msg_dir = PROTOCOL__PROGRAN_DIRECTION__INITIATING_MESSAGE;
  (*msg)->stats_request_msg = stats_request_msg;
  return 0;
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 error:
  // TODO: Need to make proper error handling
  if (header != NULL)
    free(header);
  if (stats_request_msg != NULL)
    free(stats_request_msg);
  if(*msg != NULL)
    free(*msg);
  //LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
  return -1;
}

int enb_agent_mac_destroy_stats_request(Protocol__ProgranMessage *msg) {
   if(msg->msg_case != PROTOCOL__PROGRAN_MESSAGE__MSG_STATS_REQUEST_MSG)
    goto error;
  free(msg->stats_request_msg->header);
  if (msg->stats_request_msg->body_case == PROTOCOL__PRP_STATS_REQUEST__BODY_CELL_STATS_REQUEST) {
    free(msg->stats_request_msg->cell_stats_request->cell);
  }
  if (msg->stats_request_msg->body_case == PROTOCOL__PRP_STATS_REQUEST__BODY_UE_STATS_REQUEST) {
    free(msg->stats_request_msg->ue_stats_request->rnti);
  }
  free(msg->stats_request_msg);
  free(msg);
  return 0;
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 error:
  //LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
  return -1;
}

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int enb_agent_mac_stats_reply(mid_t mod_id,
			      xid_t xid,
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			      const report_config_t *report_config,
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			      Protocol__ProgranMessage **msg) {
  Protocol__PrpHeader *header;
  int i, j, k;
  int cc_id = 0;
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  int enb_id = mod_id;
  //eNB_MAC_INST *eNB = &eNB_mac_inst[enb_id];
  //UE_list_t *eNB_UE_list=  &eNB->UE_list;
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  if (prp_create_header(xid, PROTOCOL__PRP_TYPE__PRPT_STATS_REPLY, &header) != 0)
    goto error;

  Protocol__PrpStatsReply *stats_reply_msg;
  stats_reply_msg = malloc(sizeof(Protocol__PrpStatsReply));
  if (stats_reply_msg == NULL)
    goto error;
  protocol__prp_stats_reply__init(stats_reply_msg);
  stats_reply_msg->header = header;

  stats_reply_msg->n_ue_report = report_config->nr_ue;
  stats_reply_msg->n_cell_report = report_config->nr_cc;

  Protocol__PrpUeStatsReport **ue_report;
  Protocol__PrpCellStatsReport **cell_report;

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  /* Allocate memory for list of UE reports */
  if (report_config->nr_ue > 0) {
    ue_report = malloc(sizeof(Protocol__PrpUeStatsReport *) * report_config->nr_ue);
    if (ue_report == NULL)
      goto error;
    for (i = 0; i < report_config->nr_ue; i++) {
      ue_report[i] = malloc(sizeof(Protocol__PrpUeStatsReport));
      protocol__prp_ue_stats_report__init(ue_report[i]);
      ue_report[i]->rnti = report_config->ue_report_type[i].ue_rnti;
      ue_report[i]->has_rnti = 1;
      ue_report[i]->flags = report_config->ue_report_type[i].ue_report_flags;
      ue_report[i]->has_flags = 1;
      /* Check the types of reports that need to be constructed based on flag values */

      /* Check flag for creation of buffer status report */
      if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__PRP_UE_STATS_TYPE__PRUST_BSR) {
	//TODO: Create a report for each LCG (4 elements). See prp_ue_stats_report of
	// progRAN specifications for more details
	ue_report[i]->n_bsr = 4;
	uint32_t *elem;
	elem = (uint32_t *) malloc(sizeof(uint32_t)*ue_report[i]->n_bsr);
	if (elem == NULL)
	  goto error;
	for (j = 0; j++; j < ue_report[i]->n_bsr) {
	  // Set the actual BSR for LCG j of the current UE
	  // NN: we need to know the cc_id here, consider the first one
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	  elem[j] = get_ue_bsr (enb_id, i, j); //eNB_UE_list->UE_template[UE_PCCID(enb_id,i)][i].bsr_info[j];
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	}
	ue_report[i]->bsr = elem;
      }
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      /* Check flag for creation of PRH report */
      if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__PRP_UE_STATS_TYPE__PRUST_PRH) {
	// TODO: Fill in the actual power headroom value for the RNTI
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	ue_report[i]->phr = get_ue_phr (enb_id, i); // eNB_UE_list->UE_template[UE_PCCID(enb_id,i)][i].phr_info;
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	ue_report[i]->has_phr = 1;
      }

      /* Check flag for creation of RLC buffer status report */
      if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__PRP_UE_STATS_TYPE__PRUST_RLC_BS) {
	// TODO: Fill in the actual RLC buffer status reports
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	ue_report[i]->n_rlc_report = 3; // Set this to the number of LCs for this UE
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	Protocol__PrpRlcBsr ** rlc_reports;
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	rlc_reports = malloc(sizeof(Protocol__PrpRlcBsr *) * ue_report[i]->n_rlc_report);
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	if (rlc_reports == NULL)
	  goto error;
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	// Fill the buffer status report for each logical channel of the UE
	// NN: see LAYER2/openair2_proc.c for rlc status
	for (j = 0; j < ue_report[i]->n_rlc_report; j++) {
	  rlc_reports[j] = malloc(sizeof(Protocol__PrpRlcBsr));
	  if (rlc_reports[j] == NULL)
	    goto error;
	  protocol__prp_rlc_bsr__init(rlc_reports[j]);
	  //TODO:Set logical channel id
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	  rlc_reports[j]->lc_id = j+1;
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	  rlc_reports[j]->has_lc_id = 1;
	  //TODO:Set tx queue size in bytes
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	  rlc_reports[j]->tx_queue_size = get_tx_queue_size(enb_id,i,j+1);
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	  rlc_reports[j]->has_tx_queue_size = 1;
	  //TODO:Set tx queue head of line delay in ms
	  rlc_reports[j]->tx_queue_hol_delay = 100;
	  rlc_reports[j]->has_tx_queue_hol_delay = 1;
	  //TODO:Set retransmission queue size in bytes
	  rlc_reports[j]->retransmission_queue_size = 10;
	  rlc_reports[j]->has_retransmission_queue_size = 1;
	  //TODO:Set retransmission queue head of line delay in ms
	  rlc_reports[j]->retransmission_queue_hol_delay = 100;
	  rlc_reports[j]->has_retransmission_queue_hol_delay = 1;
	  //TODO:Set current size of the pending message in bytes
	  rlc_reports[j]->status_pdu_size = 100;
	  rlc_reports[j]->has_status_pdu_size = 1;
	}
	// Add RLC buffer status reports to the full report
	if (ue_report[i]->n_rlc_report > 0)
	  ue_report[i]->rlc_report = rlc_reports;
      }

      /* Check flag for creation of MAC CE buffer status report */
      if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__PRP_UE_STATS_TYPE__PRUST_MAC_CE_BS) {
	// TODO: Fill in the actual MAC CE buffer status report
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	ue_report[i]->pending_mac_ces = (get_MAC_CE_bitmap_TA(enb_id,i) | (0 << 1) | (0 << 2) | (0 << 3)) & 15; /* Use as bitmap. Set one or more of the; /* Use as bitmap. Set one or more of the
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					       PROTOCOL__PRP_CE_TYPE__PRPCET_ values
					       found in stats_common.pb-c.h. See
					       prp_ce_type in progRAN specification */
	ue_report[i]->has_pending_mac_ces = 1;
      }
486

487 488 489 490 491 492 493 494 495
      /* Check flag for creation of DL CQI report */
      if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__PRP_UE_STATS_TYPE__PRUST_DL_CQI) {
	// TODO: Fill in the actual DL CQI report for the UE based on its configuration
	Protocol__PrpDlCqiReport * dl_report;
	dl_report = malloc(sizeof(Protocol__PrpDlCqiReport));
	if (dl_report == NULL)
	  goto error;
	protocol__prp_dl_cqi_report__init(dl_report);
	//TODO:Set the SFN and SF of the last report held in the agent.
496
	dl_report->sfn_sn = get_sfn_sf(enb_id);
497 498
	dl_report->has_sfn_sn = 1;
	//TODO:Set the number of DL CQI reports for this UE. One for each CC
499
	dl_report->n_csi_report = get_active_CC(enb_id,i);
500 501
	//TODO:Create the actual CSI reports.
	Protocol__PrpDlCsi **csi_reports;
502
	csi_reports = malloc(sizeof(Protocol__PrpDlCsi *)*dl_report->n_csi_report);
503 504 505 506 507 508 509 510
	if (csi_reports == NULL)
	  goto error;
	for (j = 0; j < dl_report->n_csi_report; j++) {
	  csi_reports[j] = malloc(sizeof(Protocol__PrpDlCsi));
	  if (csi_reports[j] == NULL)
	    goto error;
	  protocol__prp_dl_csi__init(csi_reports[j]);
	  //TODO: the servCellIndex for this report
511
	  csi_reports[j]->serv_cell_index = j;
512 513
	  csi_reports[j]->has_serv_cell_index = 1;
	  //TODO: the rank indicator value for this cc
514
	  csi_reports[j]->ri = get_current_RI(enb_id,i,j);
515 516 517 518 519
	  csi_reports[j]->has_ri = 1;
	  //TODO: the type of CSI report based on the configuration of the UE
	  //For this example we use type P10, which only needs a wideband value
	  //The full set of types can be found in stats_common.pb-c.h and
	  //in the progRAN specifications
520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560
    csi_reports[j]->type =  PROTOCOL__PRP_CSI_TYPE__PRCSIT_P10;
		  csi_reports[j]->has_type = 1;
		  csi_reports[j]->report_case = PROTOCOL__PRP_DL_CSI__REPORT_P10CSI;
		  if(csi_reports[j]->report_case == PROTOCOL__PRP_DL_CSI__REPORT_P10CSI){
			  Protocol__PrpCsiP10 *csi10;
			  csi10 = malloc(sizeof(Protocol__PrpCsiP10));
			  if (csi10 == NULL)
				goto error;
			  protocol__prp_csi_p10__init(csi10);
			  //TODO: set the wideband value
			  // NN: this is also depends on cc_id
			  csi10->wb_cqi = get_ue_wcqi (enb_id, i); //eNB_UE_list->eNB_UE_stats[UE_PCCID(enb_id,i)][i].dl_cqi;
			  csi10->has_wb_cqi = 1;
			  //Add the type of measurements to the csi report in the proper union type
			  csi_reports[j]->p10csi = csi10;
		  }
		  else if(csi_reports[j]->report_case == PROTOCOL__PRP_DL_CSI__REPORT_P11CSI){

		  }
		  else if(csi_reports[j]->report_case == PROTOCOL__PRP_DL_CSI__REPORT_P20CSI){

		  }
		  else if(csi_reports[j]->report_case == PROTOCOL__PRP_DL_CSI__REPORT_P21CSI){

		  }
		  else if(csi_reports[j]->report_case == PROTOCOL__PRP_DL_CSI__REPORT_A12CSI){

		  }
		  else if(csi_reports[j]->report_case == PROTOCOL__PRP_DL_CSI__REPORT_A22CSI){

		  }
		  else if(csi_reports[j]->report_case == PROTOCOL__PRP_DL_CSI__REPORT_A20CSI){

		  }
		  else if(csi_reports[j]->report_case == PROTOCOL__PRP_DL_CSI__REPORT_A30CSI){

		  }
		  else if(csi_reports[j]->report_case == PROTOCOL__PRP_DL_CSI__REPORT_A31CSI){

		  }
		}
561 562 563 564 565
	//Add the csi reports to the full DL CQI report
	dl_report->csi_report = csi_reports;
	//Add the DL CQI report to the stats report
	ue_report[i]->dl_cqi_report = dl_report;
      }
566

567 568 569 570 571 572 573 574 575 576 577 578 579
      /* Check flag for creation of paging buffer status report */
      if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__PRP_UE_STATS_TYPE__PRUST_PBS) {
	//TODO: Fill in the actual paging buffer status report. For this field to be valid, the RNTI
	//set in the report must be a P-RNTI
	Protocol__PrpPagingBufferReport *paging_report;
	paging_report = malloc(sizeof(Protocol__PrpPagingBufferReport));
	if (paging_report == NULL)
	  goto error;
	protocol__prp_paging_buffer_report__init(paging_report);
	//Set the number of pending paging messages
	paging_report->n_paging_info = 1;
	//Provide a report for each pending paging message
	Protocol__PrpPagingInfo **p_info;
580
	p_info = malloc(sizeof(Protocol__PrpPagingInfo *) * paging_report->n_paging_info);
581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606
	if (p_info == NULL)
	  goto error;
	for (j = 0; j < paging_report->n_paging_info; j++) {
	  p_info[j] = malloc(sizeof(Protocol__PrpPagingInfo));
	  if(p_info[j] == NULL)
	    goto error;
	  protocol__prp_paging_info__init(p_info[j]);
	  //TODO: Set paging index. This index is the same that will be used for the scheduling of the
	  //paging message by the controller
	  p_info[j]->paging_index = 10;
	  p_info[j]->has_paging_index = 1;
	  //TODO:Set the paging message size
	  p_info[j]->paging_message_size = 100;
	  p_info[j]->has_paging_message_size = 1;
	  //TODO: Set the paging subframe
	  p_info[j]->paging_subframe = 10;
	  p_info[j]->has_paging_subframe = 1;
	  //TODO: Set the carrier index for the pending paging message
	  p_info[j]->carrier_index = 0;
	  p_info[j]->has_carrier_index = 1;
	}
	//Add all paging info to the paging buffer rerport
	paging_report->paging_info = p_info;
	//Add the paging report to the UE report
	ue_report[i]->pbr = paging_report;
      }
607

608 609 610 611 612 613 614 615 616
      /* Check flag for creation of UL CQI report */
      if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__PRP_UE_STATS_TYPE__PRUST_UL_CQI) {
	//Fill in the full UL CQI report of the UE
	Protocol__PrpUlCqiReport *full_ul_report;
	full_ul_report = malloc(sizeof(Protocol__PrpUlCqiReport));
	if(full_ul_report == NULL)
	  goto error;
	protocol__prp_ul_cqi_report__init(full_ul_report);
	//TODO:Set the SFN and SF of the generated report
617
	full_ul_report->sfn_sn = get_sfn_sf(enb_id);
618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669
	full_ul_report->has_sfn_sn = 1;
	//TODO:Set the number of UL measurement reports based on the types of measurements
	//configured for this UE and on the servCellIndex
	full_ul_report->n_cqi_meas = 1;
	Protocol__PrpUlCqi **ul_report;
	ul_report = malloc(sizeof(Protocol__PrpUlCqi *) * full_ul_report->n_cqi_meas);
	if(ul_report == NULL)
	  goto error;
	//Fill each UL report of the UE for each of the configured report types
	for(j = 0; j++; j < full_ul_report->n_cqi_meas) {
	  ul_report[j] = malloc(sizeof(Protocol__PrpUlCqi));
	  if(ul_report[j] == NULL)
	  goto error;
	  protocol__prp_ul_cqi__init(ul_report[j]);
	  //TODO: Set the type of the UL report. As an example set it to SRS UL report
	  // See enum prp_ul_cqi_type in progRAN specification for more details
	  ul_report[j]->type = PROTOCOL__PRP_UL_CQI_TYPE__PRUCT_SRS;
	  ul_report[j]->has_type = 1;
	  //TODO:Set the number of SINR measurements based on the report type
	  //See struct prp_ul_cqi in progRAN specification for more details
	  ul_report[j]->n_sinr = 100;
	  uint32_t *sinr_meas;
	  sinr_meas = (uint32_t *) malloc(sizeof(uint32_t) * ul_report[j]->n_sinr);
	  if (sinr_meas == NULL)
	    goto error;
	  //TODO:Set the SINR measurements for the specified type
	  for (k = 0; k < ul_report[j]->n_sinr; k++) {
	    sinr_meas[k] = 10;
	  }
	  ul_report[j]->sinr = sinr_meas;
	  //TODO: Set the servCellIndex for this report
	  ul_report[j]->serv_cell_index = 0;
	  ul_report[j]->has_serv_cell_index = 1;
	  //Set the list of UL reports of this UE to the full UL report
	  full_ul_report->cqi_meas = ul_report;
	  //Add full UL CQI report to the UE report
	  ue_report[i]->ul_cqi_report = full_ul_report;
	}
      }
    }
    /* Add list of all UE reports to the message */
    stats_reply_msg->ue_report = ue_report;
  }

  /* Allocate memory for list of cell reports */
  if (report_config->nr_cc > 0) {
    cell_report = malloc(sizeof(Protocol__PrpCellStatsReport *) * report_config->nr_cc);
    if (cell_report == NULL)
      goto error;
    // Fill in the Cell reports
    for (i = 0; i < report_config->nr_cc; i++) {
      cell_report[i] = malloc(sizeof(Protocol__PrpCellStatsReport));
670
      if(cell_report[i] == NULL)
671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686
	goto error;
      protocol__prp_cell_stats_report__init(cell_report[i]);
      cell_report[i]->carrier_index = report_config->cc_report_type[i].cc_id;
      cell_report[i]->has_carrier_index = 1;
      cell_report[i]->flags = report_config->cc_report_type[i].cc_report_flags;
      cell_report[i]->has_flags = 1;

      /* Check flag for creation of noise and interference report */
      if(report_config->cc_report_type[i].cc_report_flags & PROTOCOL__PRP_CELL_STATS_TYPE__PRCST_NOISE_INTERFERENCE) {
	// TODO: Fill in the actual noise and interference report for this cell
	Protocol__PrpNoiseInterferenceReport *ni_report;
	ni_report = malloc(sizeof(Protocol__PrpNoiseInterferenceReport));
	if(ni_report == NULL)
	  goto error;
	protocol__prp_noise_interference_report__init(ni_report);
	// Current frame and subframe number
687
	ni_report->sfn_sf = get_sfn_sf(enb_id);
688 689 690 691 692 693 694 695 696 697 698 699 700
	ni_report->has_sfn_sf = 1;
	// Received interference power in dbm
	ni_report->rip = 0;
	ni_report->has_rip = 1;
	// Thermal noise power in dbm
	ni_report->tnp = 0;
	ni_report->has_tnp = 1;
	cell_report[i]->noise_inter_report = ni_report;
      }
    }
    /* Add list of all cell reports to the message */
    stats_reply_msg->cell_report = cell_report;
  }
701

702 703 704 705 706 707 708 709
  *msg = malloc(sizeof(Protocol__ProgranMessage));
  if(*msg == NULL)
    goto error;
  protocol__progran_message__init(*msg);
  (*msg)->msg_case = PROTOCOL__PROGRAN_MESSAGE__MSG_STATS_REPLY_MSG;
  (*msg)->msg_dir =  PROTOCOL__PROGRAN_DIRECTION__SUCCESSFUL_OUTCOME;
  (*msg)->stats_reply_msg = stats_reply_msg;
  return 0;
710

711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728
 error:
  // TODO: Need to make proper error handling
  if (header != NULL)
    free(header);
  if (stats_reply_msg != NULL)
    free(stats_reply_msg);
  if(*msg != NULL)
    free(*msg);
  //LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
  return -1;
}

int enb_agent_mac_destroy_stats_reply(Protocol__ProgranMessage *msg) {
  //TODO: Need to deallocate memory for the stats reply message
  if(msg->msg_case != PROTOCOL__PROGRAN_MESSAGE__MSG_STATS_REPLY_MSG)
    goto error;
  free(msg->stats_reply_msg->header);
  int i, j, k;
729

730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789
  Protocol__PrpStatsReply *reply = msg->stats_reply_msg;
  Protocol__PrpDlCqiReport *dl_report;
  Protocol__PrpUlCqiReport *ul_report;
  Protocol__PrpPagingBufferReport *paging_report;

  // Free the memory for the UE reports
  for (i = 0; i < reply->n_ue_report; i++) {
    free(reply->ue_report[i]->bsr);
    for (j = 0; j < reply->ue_report[i]->n_rlc_report; j++) {
      free(reply->ue_report[i]->rlc_report[j]);
    }
    free(reply->ue_report[i]->rlc_report);
    // If DL CQI report flag was set
    if (reply->ue_report[i]->flags & PROTOCOL__PRP_UE_STATS_TYPE__PRUST_DL_CQI) {
      dl_report = reply->ue_report[i]->dl_cqi_report;
      // Delete all CSI reports
      for (j = 0; j < dl_report->n_csi_report; j++) {
	//Must free memory based on the type of report
	switch(dl_report->csi_report[j]->report_case) {
	case PROTOCOL__PRP_DL_CSI__REPORT_P10CSI:
	  free(dl_report->csi_report[j]->p10csi);
	  break;
	case PROTOCOL__PRP_DL_CSI__REPORT_P11CSI:
	  free(dl_report->csi_report[j]->p11csi->wb_cqi);
	  free(dl_report->csi_report[j]->p11csi);
	  break;
	case PROTOCOL__PRP_DL_CSI__REPORT_P20CSI:
	  free(dl_report->csi_report[j]->p20csi);
	  break;
	case PROTOCOL__PRP_DL_CSI__REPORT_P21CSI:
	  free(dl_report->csi_report[j]->p21csi->wb_cqi);
	  free(dl_report->csi_report[j]->p21csi->sb_cqi);
	  free(dl_report->csi_report[j]->p21csi);
	  break;
	case PROTOCOL__PRP_DL_CSI__REPORT_A12CSI:
	  free(dl_report->csi_report[j]->a12csi->wb_cqi);
	  free(dl_report->csi_report[j]->a12csi->sb_pmi);
	  free(dl_report->csi_report[j]->a12csi);
	  break;
	case PROTOCOL__PRP_DL_CSI__REPORT_A22CSI:
	  free(dl_report->csi_report[j]->a22csi->wb_cqi);
	  free(dl_report->csi_report[j]->a22csi->sb_cqi);
	  free(dl_report->csi_report[j]->a22csi->sb_list);
	  free(dl_report->csi_report[j]->a22csi);
	  break;
	case PROTOCOL__PRP_DL_CSI__REPORT_A20CSI:
	  free(dl_report->csi_report[j]->a20csi->sb_list);
	  free(dl_report->csi_report[j]->a20csi);
	  break;
	case PROTOCOL__PRP_DL_CSI__REPORT_A30CSI:
	  free(dl_report->csi_report[j]->a30csi->sb_cqi);
	  free(dl_report->csi_report[j]->a30csi);
	  break;
	case PROTOCOL__PRP_DL_CSI__REPORT_A31CSI:
	  free(dl_report->csi_report[j]->a31csi->wb_cqi);
	  for (k = 0; k < dl_report->csi_report[j]->a31csi->n_sb_cqi; k++) {
	    free(dl_report->csi_report[j]->a31csi->sb_cqi[k]);
	  }
	  free(dl_report->csi_report[j]->a31csi->sb_cqi);
	  break;
790 791
	}

792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825
	free(dl_report->csi_report[j]);
      }
      free(dl_report->csi_report);
      free(dl_report);
    }
    // If Paging buffer report flag was set
    if (reply->ue_report[i]->flags & PROTOCOL__PRP_UE_STATS_TYPE__PRUST_PBS) {
      paging_report = reply->ue_report[i]->pbr;
      // Delete all paging buffer reports
      for (j = 0; j < paging_report->n_paging_info; j++) {
	free(paging_report->paging_info[j]);
      }
      free(paging_report->paging_info);
      free(paging_report);
    }
    // If UL CQI report flag was set
    if (reply->ue_report[i]->flags & PROTOCOL__PRP_UE_STATS_TYPE__PRUST_UL_CQI) {
      ul_report = reply->ue_report[i]->ul_cqi_report;
      for (j = 0; j < ul_report->n_cqi_meas; j++) {
	free(ul_report->cqi_meas[j]->sinr);
	free(ul_report->cqi_meas[j]);
      }
      free(ul_report->cqi_meas);
    }
    free(reply->ue_report[i]);
  }
  free(reply->ue_report);

  // Free memory for all Cell reports
  for (i = 0; i < reply->n_cell_report; i++) {
    free(reply->cell_report[i]->noise_inter_report);
    free(reply->cell_report[i]);
  }
  free(reply->cell_report);
826

827 828 829
  free(reply);
  free(msg);
  return 0;
830

831 832 833 834
 error:
  //LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
  return -1;
}
835 836 837 838 839 840 841 842 843 844 845 846 847 848

int enb_agent_mac_sr_info(mid_t mod_id, const void *params, Protocol__ProgranMessage **msg) {
  Protocol__PrpHeader *header;
  int i;
  const int xid = *((int *)params);
  if (prp_create_header(xid, PROTOCOL__PRP_TYPE__PRPT_UL_SR_INFO, &header) != 0)
    goto error;

  Protocol__PrpUlSrInfo *ul_sr_info_msg;
  ul_sr_info_msg = malloc(sizeof(Protocol__PrpUlSrInfo));
  if (ul_sr_info_msg == NULL) {
    goto error;
  }
  protocol__prp_ul_sr_info__init(ul_sr_info_msg);
849

850 851 852 853 854 855 856 857 858 859 860 861 862 863
  ul_sr_info_msg->header = header;
  ul_sr_info_msg->has_sfn_sf = 1;
  ul_sr_info_msg->sfn_sf = get_sfn_sf(mod_id);
  /*TODO: Set the number of UEs that sent an SR */
  ul_sr_info_msg->n_rnti = 1;
  ul_sr_info_msg->rnti = (uint32_t *) malloc(ul_sr_info_msg->n_rnti * sizeof(uint32_t));

  if(ul_sr_info_msg->rnti == NULL) {
    goto error;
  }
  /*TODO:Set the rnti of the UEs that sent an SR */
  for (i = 0; i < ul_sr_info_msg->n_rnti; i++) {
    ul_sr_info_msg->rnti[i] = 1;
  }
864

865 866 867 868 869 870 871 872
  *msg = malloc(sizeof(Protocol__ProgranMessage));
  if(*msg == NULL)
    goto error;
  protocol__progran_message__init(*msg);
  (*msg)->msg_case = PROTOCOL__PROGRAN_MESSAGE__MSG_UL_SR_INFO_MSG;
  (*msg)->msg_dir =  PROTOCOL__PROGRAN_DIRECTION__INITIATING_MESSAGE;
  (*msg)->ul_sr_info_msg = ul_sr_info_msg;
  return 0;
873

874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902
 error:
  // TODO: Need to make proper error handling
  if (header != NULL)
    free(header);
  if (ul_sr_info_msg != NULL) {
    free(ul_sr_info_msg->rnti);
    free(ul_sr_info_msg);
  }
  if(*msg != NULL)
    free(*msg);
  //LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
  return -1;
}

int enb_agent_mac_destroy_sr_info(Protocol__ProgranMessage *msg) {
   if(msg->msg_case != PROTOCOL__PROGRAN_MESSAGE__MSG_UL_SR_INFO_MSG)
     goto error;

   free(msg->ul_sr_info_msg->header);
   free(msg->ul_sr_info_msg->rnti);
   free(msg->ul_sr_info_msg);
   free(msg);
   return 0;

 error:
   //LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
   return -1;
}

903
int enb_agent_mac_sf_trigger(mid_t mod_id, const void *params, Protocol__ProgranMessage **msg) {
904 905 906
  Protocol__PrpHeader *header;
  int i,j;
  const int xid = *((int *)params);
907
  if (prp_create_header(xid, PROTOCOL__PRP_TYPE__PRPT_SF_TRIGGER, &header) != 0)
908 909
    goto error;

910 911 912
  Protocol__PrpSfTrigger *sf_trigger_msg;
  sf_trigger_msg = malloc(sizeof(Protocol__PrpSfTrigger));
  if (sf_trigger_msg == NULL) {
913 914
    goto error;
  }
915
  protocol__prp_sf_trigger__init(sf_trigger_msg);
916

917 918 919
  sf_trigger_msg->header = header;
  sf_trigger_msg->has_sfn_sf = 1;
  sf_trigger_msg->sfn_sf = get_sfn_sf(mod_id);
920 921 922 923

  /*TODO: Fill in the number of dl HARQ related info, based on the number of currently
   *transmitting UEs
   */
924
  sf_trigger_msg->n_dl_info = get_num_ues(mod_id);
925

926 927
  Protocol__PrpDlInfo **dl_info = NULL;

928 929
  if (sf_trigger_msg->n_dl_info > 0) {
    dl_info = malloc(sizeof(Protocol__PrpDlInfo *) * sf_trigger_msg->n_dl_info);
930 931 932
    if(dl_info == NULL)
      goto error;
    //Fill the status of the current HARQ process for each UE
933
    for(i = 0; i < sf_trigger_msg->n_dl_info; i++) {
934 935 936 937 938 939 940
      dl_info[i] = malloc(sizeof(Protocol__PrpDlInfo));
      if(dl_info[i] == NULL)
	goto error;
      protocol__prp_dl_info__init(dl_info[i]);
      dl_info[i]->rnti = get_ue_crnti(mod_id, i);
      dl_info[i]->has_rnti = 1;
      /*TODO: fill in the right id of this round's HARQ process for this UE*/
941 942 943 944
      int harq_id;
      int harq_status;
      get_harq(mod_id,UE_PCCID(mod_id,i),i,get_current_frame(mod_id),get_current_subframe(mod_id),&harq_id, &harq_status);
      dl_info[i]->harq_process_id = harq_id;
945 946 947 948
      dl_info[i]->has_harq_process_id = 1;
      /*TODO: fill in the status of the HARQ process (2 TBs)*/
      dl_info[i]->n_harq_status = 2;
      dl_info[i]->harq_status = malloc(sizeof(uint32_t) * dl_info[i]->n_harq_status);
949
      for (j = 0; j < dl_info[i]->n_harq_status; j++) {
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	// TODO: This should be different per TB
	dl_info[i]->harq_status[j] = harq_status;
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      }
      /*TODO: fill in the serving cell index for this UE */
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      dl_info[i]->serv_cell_index = UE_PCCID(mod_id,i);
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      dl_info[i]->has_serv_cell_index = 1;
    }
  }
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  sf_trigger_msg->dl_info = dl_info;
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    /*TODO: Fill in the number of UL reception status related info, based on the number of currently
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   *transmitting UEs
   */
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  sf_trigger_msg->n_ul_info = get_num_ues(mod_id);
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  Protocol__PrpUlInfo **ul_info = NULL;

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  if (sf_trigger_msg->n_ul_info > 0) {
    ul_info = malloc(sizeof(Protocol__PrpUlInfo *) * sf_trigger_msg->n_ul_info);
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    if(ul_info == NULL)
      goto error;
    //Fill the reception info for each transmitting UE
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    for(i = 0; i < sf_trigger_msg->n_ul_info; i++) {
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      ul_info[i] = malloc(sizeof(Protocol__PrpUlInfo));
      if(ul_info[i] == NULL)
	goto error;
      protocol__prp_ul_info__init(ul_info[i]);
      ul_info[i]->rnti = get_ue_crnti(mod_id, i);
      ul_info[i]->has_rnti = 1;
      /*TODO: fill in the Tx power control command for this UE (if available)*/
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      if(get_tpc(mod_id,i) != 1){
    	  ul_info[i]->tpc = get_tpc(mod_id,i);
          ul_info[i]->has_tpc = 1;
      }
      else{
    	  ul_info[i]->tpc = get_tpc(mod_id,i);
    	  ul_info[i]->has_tpc = 0;
      }
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      /*TODO: fill in the amount of data in bytes in the MAC SDU received in this subframe for the
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	given logical channel*/
      ul_info[i]->n_ul_reception = 11;
      ul_info[i]->ul_reception = malloc(sizeof(uint32_t) * ul_info[i]->n_ul_reception);
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      for (j = 0; j < ul_info[i]->n_ul_reception; j++) {
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	ul_info[i]->ul_reception[j] = 100;
      }
      /*TODO: Fill in the reception status for each UEs data*/
      ul_info[i]->reception_status = PROTOCOL__PRP_RECEPTION_STATUS__PRRS_OK;
      ul_info[i]->has_reception_status = 1;
      /*TODO: fill in the serving cell index for this UE */
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      ul_info[i]->serv_cell_index = UE_PCCID(mod_id,i);
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      ul_info[i]->has_serv_cell_index = 1;
    }
  }
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  sf_trigger_msg->ul_info = ul_info;

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  *msg = malloc(sizeof(Protocol__ProgranMessage));
  if(*msg == NULL)
    goto error;
  protocol__progran_message__init(*msg);
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  (*msg)->msg_case = PROTOCOL__PROGRAN_MESSAGE__MSG_SF_TRIGGER_MSG;
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  (*msg)->msg_dir =  PROTOCOL__PROGRAN_DIRECTION__INITIATING_MESSAGE;
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  (*msg)->sf_trigger_msg = sf_trigger_msg;
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  return 0;
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 error:
  if (header != NULL)
    free(header);
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  if (sf_trigger_msg != NULL) {
    for (i = 0; i < sf_trigger_msg->n_dl_info; i++) {
      free(sf_trigger_msg->dl_info[i]->harq_status);
    }
    free(sf_trigger_msg->dl_info);
    for (i = 0; i < sf_trigger_msg->n_ul_info; i++) {
      free(sf_trigger_msg->ul_info[i]->reception_status);
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    }
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    free(sf_trigger_msg->ul_info);
    free(sf_trigger_msg);
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  }
  if(*msg != NULL)
    free(*msg);
  //LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
  return -1;
}

1036
int enb_agent_mac_destroy_sf_trigger(Protocol__ProgranMessage *msg) {
1037
  int i;
1038
  if(msg->msg_case != PROTOCOL__PROGRAN_MESSAGE__MSG_SF_TRIGGER_MSG)
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    goto error;
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  free(msg->sf_trigger_msg->header);
  for (i = 0; i < msg->sf_trigger_msg->n_dl_info; i++) {
    free(msg->sf_trigger_msg->dl_info[i]->harq_status);
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  }
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  free(msg->sf_trigger_msg->dl_info);
  for (i = 0; i < msg->sf_trigger_msg->n_ul_info; i++) {
    free(msg->sf_trigger_msg->ul_info[i]->reception_status);
  }
  free(msg->sf_trigger_msg->ul_info);
  free(msg->sf_trigger_msg);
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  free(msg);
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  return 0;

 error:
  //LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
  return -1;
}

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int enb_agent_mac_create_empty_dl_config(mid_t mod_id, Protocol__ProgranMessage **msg) {

  int xid = 0;
  Protocol__PrpHeader *header;
  if (prp_create_header(xid, PROTOCOL__PRP_TYPE__PRPT_DL_MAC_CONFIG, &header) != 0)
    goto error;

  Protocol__PrpDlMacConfig *dl_mac_config_msg;
  dl_mac_config_msg = malloc(sizeof(Protocol__PrpDlMacConfig));
  if (dl_mac_config_msg == NULL) {
    goto error;
  }
  protocol__prp_dl_mac_config__init(dl_mac_config_msg);
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  dl_mac_config_msg->header = header;
  dl_mac_config_msg->has_sfn_sf = 1;
  dl_mac_config_msg->sfn_sf = get_sfn_sf(mod_id);
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  *msg = malloc(sizeof(Protocol__ProgranMessage));
  if(*msg == NULL)
    goto error;
  protocol__progran_message__init(*msg);
  (*msg)->msg_case = PROTOCOL__PROGRAN_MESSAGE__MSG_DL_MAC_CONFIG_MSG;
  (*msg)->msg_dir =  PROTOCOL__PROGRAN_DIRECTION__INITIATING_MESSAGE;
  (*msg)->dl_mac_config_msg = dl_mac_config_msg;

  return 0;

 error:
  return -1;
}

int enb_agent_mac_destroy_dl_config(Protocol__ProgranMessage *msg) {
1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118
  int i,j, k;
  if(msg->msg_case != PROTOCOL__PROGRAN_MESSAGE__MSG_DL_MAC_CONFIG_MSG)
    goto error;

  Protocol__PrpDlDci *dl_dci;

  free(msg->dl_mac_config_msg->header);
  for (i = 0; i < msg->dl_mac_config_msg->n_dl_ue_data; i++) {
    free(msg->dl_mac_config_msg->dl_ue_data[i]->ce_bitmap);
    for (j = 0; j < msg->dl_mac_config_msg->dl_ue_data[i]->n_rlc_pdu; j++) {
      for (k = 0; k <  msg->dl_mac_config_msg->dl_ue_data[i]->rlc_pdu[j]->n_rlc_pdu_tb; k++) {
	free(msg->dl_mac_config_msg->dl_ue_data[i]->rlc_pdu[j]->rlc_pdu_tb[k]);
      }
      free(msg->dl_mac_config_msg->dl_ue_data[i]->rlc_pdu[j]->rlc_pdu_tb);
      free(msg->dl_mac_config_msg->dl_ue_data[i]->rlc_pdu[j]);
    }
    free(msg->dl_mac_config_msg->dl_ue_data[i]->rlc_pdu);
    dl_dci = msg->dl_mac_config_msg->dl_ue_data[i]->dl_dci;
    free(dl_dci->tbs_size);
    free(dl_dci->mcs);
    free(dl_dci->ndi);
    free(dl_dci->rv);
    free(dl_dci);
    free(msg->dl_mac_config_msg->dl_ue_data[i]);
  }
  free(msg->dl_mac_config_msg->dl_ue_data);
1119

1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149
  for (i = 0; i <  msg->dl_mac_config_msg->n_dl_rar; i++) {
    dl_dci = msg->dl_mac_config_msg->dl_rar[i]->rar_dci;
    free(dl_dci->tbs_size);
    free(dl_dci->mcs);
    free(dl_dci->ndi);
    free(dl_dci->rv);
    free(dl_dci);
    free(msg->dl_mac_config_msg->dl_rar[i]);
  }
  free(msg->dl_mac_config_msg->dl_rar);

  for (i = 0; i < msg->dl_mac_config_msg->n_dl_broadcast; i++) {
    dl_dci = msg->dl_mac_config_msg->dl_broadcast[i]->broad_dci;
    free(dl_dci->tbs_size);
    free(dl_dci->mcs);
    free(dl_dci->ndi);
    free(dl_dci->rv);
    free(dl_dci);
    free(msg->dl_mac_config_msg->dl_broadcast[i]);
  }
  free(msg->dl_mac_config_msg->dl_broadcast);

    for ( i = 0; i < msg->dl_mac_config_msg->n_ofdm_sym; i++) {
    free(msg->dl_mac_config_msg->ofdm_sym[i]);
  }
  free(msg->dl_mac_config_msg->ofdm_sym);

  return 0;

 error:
1150 1151 1152
  return -1;
}

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/***********************************************
 * eNB agent - technology mac API implementation
 ***********************************************/

void enb_agent_send_sr_info(mid_t mod_id) {
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  int size;
  Protocol__ProgranMessage *msg;
  void *data;
  int priority;
  err_code_t err_code;

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  int xid = 0;

1166
  /*TODO: Must use a proper xid*/
1167
  err_code = enb_agent_mac_sr_info(mod_id, (void *) &xid, &msg);
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  if (err_code < 0) {
    goto error;
  }

  if (msg != NULL){
    data=enb_agent_pack_message(msg, &size);
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    /*Send sr info using the MAC channel of the eNB*/
    if (enb_agent_msg_send(mod_id, ENB_AGENT_MAC, data, size, priority)) {
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      err_code = PROTOCOL__PROGRAN_ERR__MSG_ENQUEUING;
      goto error;
    }
1179

1180
    LOG_D(ENB_AGENT,"sent message with size %d\n", size);
1181
    return;
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  }
 error:
  LOG_D(ENB_AGENT, "Could not send sr message\n");
}

1187
void enb_agent_send_sf_trigger(mid_t mod_id) {
1188 1189 1190 1191 1192 1193
  int size;
  Protocol__ProgranMessage *msg;
  void *data;
  int priority;
  err_code_t err_code;

1194
  int xid = 0;
1195

1196
  /*TODO: Must use a proper xid*/
1197
  err_code = enb_agent_mac_sf_trigger(mod_id, (void *) &xid, &msg);
1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210
  if (err_code < 0) {
    goto error;
  }

  if (msg != NULL){
    data=enb_agent_pack_message(msg, &size);
    /*Send sr info using the MAC channel of the eNB*/
    if (enb_agent_msg_send(mod_id, ENB_AGENT_MAC, data, size, priority)) {
      err_code = PROTOCOL__PROGRAN_ERR__MSG_ENQUEUING;
      goto error;
    }

    LOG_D(ENB_AGENT,"sent message with size %d\n", size);
1211 1212 1213 1214 1215 1216 1217 1218
    return;
  }
 error:
  LOG_D(ENB_AGENT, "Could not send sf trigger message\n");
}

void enb_agent_send_update_mac_stats(mid_t mod_id) {

1219
  Protocol__ProgranMessage *current_report = NULL, *msg;
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  void *data;
  int size;
  err_code_t err_code;
  int priority;
1224

1225
  mac_stats_updates_context_t stats_context = mac_stats_context[mod_id];
1226
  
1227 1228 1229
  if (pthread_mutex_lock(mac_stats_context[mod_id].mutex)) {
    goto error;
  }
1230

1231 1232 1233 1234 1235 1236 1237
  if (mac_stats_context[mod_id].cont_update == 1) {
  
    /*Create a fresh report with the required flags*/
    err_code = enb_agent_mac_handle_stats(mod_id, (void *) mac_stats_context[mod_id].stats_req, &current_report);
    if (err_code < 0) {
      goto error;
    }
1238
  }
1239 1240 1241 1242
  /* /\*TODO:Check if a previous reports exists and if yes, generate a report */
  /*  *that is the diff between the old and the new report, */
  /*  *respecting the thresholds. Otherwise send the new report*\/ */
  /* if (mac_stats_context[mod_id].prev_stats_reply != NULL) { */
1243

1244
  /*   msg = enb_agent_generate_diff_mac_stats_report(current_report, mac_stats_context[mod_id].prev_stats_reply); */
1245

1246 1247 1248 1249 1250
  /*   /\*Destroy the old stats*\/ */
  /*    enb_agent_destroy_progran_message(mac_stats_context[mod_id].prev_stats_reply); */
  /* } */
  /* /\*Use the current report for future comparissons*\/ */
  /* mac_stats_context[mod_id].prev_stats_reply = current_report; */
1251 1252


1253 1254 1255
  if (pthread_mutex_unlock(mac_stats_context[mod_id].mutex)) {
    goto error;
  }
1256

1257 1258
  if (current_report != NULL){
    data=enb_agent_pack_message(current_report, &size);
1259 1260 1261 1262 1263 1264 1265 1266
    /*Send any stats updates using the MAC channel of the eNB*/
    if (enb_agent_msg_send(mod_id, ENB_AGENT_MAC, data, size, priority)) {
      err_code = PROTOCOL__PROGRAN_ERR__MSG_ENQUEUING;
      goto error;
    }

    LOG_D(ENB_AGENT,"sent message with size %d\n", size);
    return;
1267 1268
  }
 error:
1269
  LOG_D(ENB_AGENT, "Could not send sf trigger message\n");
1270 1271
}

1272
int enb_agent_register_mac_xface(mid_t mod_id, AGENT_MAC_xface *xface) {
1273
  if (mac_agent_registered[mod_id]) {
1274 1275 1276 1277
    LOG_E(MAC, "MAC agent for eNB %d is already registered\n", mod_id);
    return -1;
  }

1278
  //xface->agent_ctxt = &shared_ctxt[mod_id];
1279
  xface->enb_agent_send_sr_info = enb_agent_send_sr_info;
1280
  xface->enb_agent_send_sf_trigger = enb_agent_send_sf_trigger;
1281
  xface->enb_agent_send_update_mac_stats = enb_agent_send_update_mac_stats;
1282
  xface->enb_agent_schedule_ue_spec = schedule_ue_spec_default;
1283
  xface->enb_agent_notify_ue_state_change = enb_agent_ue_state_change;
1284

1285
  mac_agent_registered[mod_id] = 1;
1286
  agent_mac_xface[mod_id] = xface;
1287 1288

  return 0;
1289 1290 1291
}

int enb_agent_unregister_mac_xface(mid_t mod_id, AGENT_MAC_xface *xface) {
1292

1293
  //xface->agent_ctxt = NULL;
1294
  xface->enb_agent_send_sr_info = NULL;
1295
  xface->enb_agent_send_sf_trigger = NULL;
1296
  xface->enb_agent_send_update_mac_stats = NULL;
1297
  xface->enb_agent_schedule_ue_spec = NULL;
1298

1299 1300
  mac_agent_registered[mod_id] = 0;
  agent_mac_xface[mod_id] = NULL;
1301

1302 1303 1304 1305 1306 1307 1308 1309 1310
  return 0;
}


/******************************************************
 *Implementations of enb_agent_mac_internal.h functions
 ******************************************************/

err_code_t enb_agent_init_cont_mac_stats_update(mid_t mod_id) {
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1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322
  /*Initialize the Mac stats update structure*/
  /*Initially the continuous update is set to false*/
  mac_stats_context[mod_id].cont_update = 0;
  mac_stats_context[mod_id].is_initialized = 1;
  mac_stats_context[mod_id].stats_req = NULL;
  mac_stats_context[mod_id].prev_stats_reply = NULL;
  mac_stats_context[mod_id].mutex = calloc(1, sizeof(pthread_mutex_t));
  if (mac_stats_context[mod_id].mutex == NULL)
    goto error;
  if (pthread_mutex_init(mac_stats_context[mod_id].mutex, NULL))
    goto error;;
1323

1324
  return 0;
1325

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 error:
  return -1;
}

err_code_t enb_agent_destroy_cont_mac_stats_update(mid_t mod_id) {
  /*Disable the continuous updates for the MAC*/
  mac_stats_context[mod_id].cont_update = 0;
  mac_stats_context[mod_id].is_initialized = 0;
  enb_agent_destroy_progran_message(mac_stats_context[mod_id].stats_req);
  enb_agent_destroy_progran_message(mac_stats_context[mod_id].prev_stats_reply);
  free(mac_stats_context[mod_id].mutex);
1337

1338 1339 1340
  mac_agent_registered[mod_id] = NULL;
  return 1;
}
1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354


err_code_t enb_agent_enable_cont_mac_stats_update(mid_t mod_id,
						  xid_t xid, stats_request_config_t *stats_req) {
  /*Enable the continuous updates for the MAC*/
  if (pthread_mutex_lock(mac_stats_context[mod_id].mutex)) {
    goto error;
  }

  Protocol__ProgranMessage *req_msg;

  enb_agent_mac_stats_request(mod_id, xid, stats_req, &req_msg);
  mac_stats_context[mod_id].stats_req = req_msg;
  mac_stats_context[mod_id].prev_stats_reply = NULL;
1355

1356 1357
  mac_stats_context[mod_id].cont_update = 1;
  mac_stats_context[mod_id].xid = xid;
1358

1359 1360 1361 1362
  if (pthread_mutex_unlock(mac_stats_context[mod_id].mutex)) {
    goto error;
  }
  return 0;
1363

1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389
 error:
  LOG_E(ENB_AGENT, "mac_stats_context for eNB %d is not initialized\n", mod_id);
  return -1;
}

err_code_t enb_agent_disable_cont_mac_stats_update(mid_t mod_id) {
  /*Disable the continuous updates for the MAC*/
  if (pthread_mutex_lock(mac_stats_context[mod_id].mutex)) {
    goto error;
  }
  mac_stats_context[mod_id].cont_update = 0;
  mac_stats_context[mod_id].xid = 0;
  if (mac_stats_context[mod_id].stats_req != NULL) {
    enb_agent_destroy_progran_message(mac_stats_context[mod_id].stats_req);
  }
  if (mac_stats_context[mod_id].prev_stats_reply != NULL) {
    enb_agent_destroy_progran_message(mac_stats_context[mod_id].prev_stats_reply);
  }
  if (pthread_mutex_unlock(mac_stats_context[mod_id].mutex)) {
    goto error;
  }
  return 0;

 error:
  LOG_E(ENB_AGENT, "mac_stats_context for eNB %d is not initialized\n", mod_id);
  return -1;
1390

1391
}