/*
 * 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 1.0  (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 rrc_eNB_GTPV1U.c
 * \brief rrc GTPV1U procedures for eNB
 * \author Lionel GAUTHIER
 * \version 1.0
 * \company Eurecom
 * \email: lionel.gauthier@eurecom.fr
 */

#if defined(ENABLE_USE_MME)
# include "defs.h"
# include "extern.h"
# include "RRC/LITE/MESSAGES/asn1_msg.h"
# include "rrc_eNB_GTPV1U.h"
# include "rrc_eNB_UE_context.h"
# include "msc.h"

# if defined(ENABLE_ITTI)
#   include "asn1_conversions.h"
#   include "intertask_interface.h"
# endif

int
rrc_eNB_process_GTPV1U_CREATE_TUNNEL_RESP(
  const protocol_ctxt_t* const ctxt_pP,
  const gtpv1u_enb_create_tunnel_resp_t * const create_tunnel_resp_pP
)
{
  rnti_t                         rnti;
  int                            i;
  struct rrc_eNB_ue_context_s*   ue_context_p = NULL;

  if (create_tunnel_resp_pP) {
    LOG_D(RRC, PROTOCOL_RRC_CTXT_UE_FMT" RX CREATE_TUNNEL_RESP num tunnels %u \n",
          PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
          create_tunnel_resp_pP->num_tunnels);

    rnti = create_tunnel_resp_pP->rnti;
    ue_context_p = rrc_eNB_get_ue_context(
                     &eNB_rrc_inst[ctxt_pP->module_id],
                     ctxt_pP->rnti);

    for (i = 0; i < create_tunnel_resp_pP->num_tunnels; i++) {
      
      ue_context_p->ue_context.enb_gtp_teid[i+ue_context_p->ue_context.setup_e_rabs]  = create_tunnel_resp_pP->enb_S1u_teid[i];
      ue_context_p->ue_context.enb_gtp_addrs[i+ue_context_p->ue_context.setup_e_rabs] = create_tunnel_resp_pP->enb_addr;
      ue_context_p->ue_context.enb_gtp_ebi[i+ue_context_p->ue_context.setup_e_rabs]   = create_tunnel_resp_pP->eps_bearer_id[i];
      
      LOG_I(RRC, PROTOCOL_RRC_CTXT_UE_FMT" rrc_eNB_process_GTPV1U_CREATE_TUNNEL_RESP tunnel (%u, %u) bearer UE context index %u, msg index %u, id %u, gtp addr len %d \n",
            PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
            create_tunnel_resp_pP->enb_S1u_teid[i],
	    ue_context_p->ue_context.enb_gtp_teid[i+ue_context_p->ue_context.setup_e_rabs],
            i+ue_context_p->ue_context.setup_e_rabs, 
	    i,
            create_tunnel_resp_pP->eps_bearer_id[i],
	    create_tunnel_resp_pP->enb_addr.length);
    }
	MSC_LOG_RX_MESSAGE(
			  MSC_RRC_ENB,
			  MSC_GTPU_ENB,
			  NULL,0,
			  MSC_AS_TIME_FMT" CREATE_TUNNEL_RESP RNTI %"PRIx16" ntuns %u ebid %u enb-s1u teid %u",
			  0,0,rnti,
			  create_tunnel_resp_pP->num_tunnels,
			  ue_context_p->ue_context.enb_gtp_ebi[0],
			  ue_context_p->ue_context.enb_gtp_teid[0]);
        (void)rnti; /* avoid gcc warning "set but not used" */
    return 0;
  } else {
    return -1;
  }
}
#endif
