forked from acouzens/open5gs
3206 lines
110 KiB
C
3206 lines
110 KiB
C
/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "mme-event.h"
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#include "mme-timer.h"
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#include "s1ap-path.h"
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#include "nas-path.h"
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#include "mme-gtp-path.h"
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#include "sgsap-types.h"
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#include "sgsap-path.h"
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#include "mme-s11-build.h"
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#include "s1ap-build.h"
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#include "s1ap-handler.h"
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#include "mme-path.h"
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#include "mme-sm.h"
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static bool served_tai_is_found(mme_enb_t *enb)
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{
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int i;
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int served_tai_index;
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for (i = 0; i < enb->num_of_supported_ta_list; i++) {
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served_tai_index = mme_find_served_tai(&enb->supported_ta_list[i]);
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if (served_tai_index >= 0 &&
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served_tai_index < OGS_MAX_NUM_OF_SERVED_TAI) {
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ogs_debug(" SERVED_TAI_INDEX[%d]", served_tai_index);
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return true;
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}
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}
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return false;
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}
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static bool maximum_number_of_enbs_is_reached(void)
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{
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mme_enb_t *enb = NULL, *next_enb = NULL;
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int number_of_enbs_online = 0;
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ogs_list_for_each_safe(&mme_self()->enb_list, next_enb, enb) {
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if (enb->state.s1_setup_success) {
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number_of_enbs_online++;
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}
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}
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return number_of_enbs_online >= ogs_app()->max.peer;
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}
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void s1ap_handle_s1_setup_request(mme_enb_t *enb, ogs_s1ap_message_t *message)
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{
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char buf[OGS_ADDRSTRLEN];
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int i, j;
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S1AP_InitiatingMessage_t *initiatingMessage = NULL;
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S1AP_S1SetupRequest_t *S1SetupRequest = NULL;
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S1AP_S1SetupRequestIEs_t *ie = NULL;
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S1AP_Global_ENB_ID_t *Global_ENB_ID = NULL;
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S1AP_SupportedTAs_t *SupportedTAs = NULL;
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S1AP_PagingDRX_t *PagingDRX = NULL;
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uint32_t enb_id;
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S1AP_Cause_PR group = S1AP_Cause_PR_NOTHING;
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long cause = 0;
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ogs_assert(enb);
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ogs_assert(enb->sctp.sock);
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ogs_assert(message);
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initiatingMessage = message->choice.initiatingMessage;
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ogs_assert(initiatingMessage);
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S1SetupRequest = &initiatingMessage->value.choice.S1SetupRequest;
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ogs_assert(S1SetupRequest);
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ogs_debug("S1SetupRequest");
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for (i = 0; i < S1SetupRequest->protocolIEs.list.count; i++) {
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ie = S1SetupRequest->protocolIEs.list.array[i];
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switch (ie->id) {
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case S1AP_ProtocolIE_ID_id_Global_ENB_ID:
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Global_ENB_ID = &ie->value.choice.Global_ENB_ID;
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break;
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case S1AP_ProtocolIE_ID_id_SupportedTAs:
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SupportedTAs = &ie->value.choice.SupportedTAs;
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break;
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case S1AP_ProtocolIE_ID_id_DefaultPagingDRX:
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PagingDRX = &ie->value.choice.PagingDRX;
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break;
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default:
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break;
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}
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}
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ogs_assert(Global_ENB_ID);
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ogs_s1ap_ENB_ID_to_uint32(&Global_ENB_ID->eNB_ID, &enb_id);
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ogs_debug(" IP[%s] ENB_ID[%d]", OGS_ADDR(enb->sctp.addr, buf), enb_id);
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if (PagingDRX)
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ogs_debug(" PagingDRX[%ld]", *PagingDRX);
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mme_enb_set_enb_id(enb, enb_id);
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ogs_assert(SupportedTAs);
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/* Parse Supported TA */
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enb->num_of_supported_ta_list = 0;
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for (i = 0; i < SupportedTAs->list.count; i++) {
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S1AP_SupportedTAs_Item_t *SupportedTAs_Item = NULL;
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S1AP_TAC_t *tAC = NULL;
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SupportedTAs_Item =
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(S1AP_SupportedTAs_Item_t *)SupportedTAs->list.array[i];
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ogs_assert(SupportedTAs_Item);
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tAC = &SupportedTAs_Item->tAC;
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ogs_assert(tAC);
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for (j = 0; j < SupportedTAs_Item->broadcastPLMNs.list.count; j++) {
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S1AP_PLMNidentity_t *pLMNidentity = NULL;
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pLMNidentity = (S1AP_PLMNidentity_t *)
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SupportedTAs_Item->broadcastPLMNs.list.array[j];
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ogs_assert(pLMNidentity);
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memcpy(&enb->supported_ta_list[enb->num_of_supported_ta_list].tac,
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tAC->buf, sizeof(uint16_t));
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enb->supported_ta_list[enb->num_of_supported_ta_list].tac =
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be16toh(enb->supported_ta_list
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[enb->num_of_supported_ta_list].tac);
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memcpy(&enb->supported_ta_list
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[enb->num_of_supported_ta_list].plmn_id,
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pLMNidentity->buf, sizeof(ogs_plmn_id_t));
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ogs_debug(" PLMN_ID[MCC:%d MNC:%d] TAC[%d]",
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ogs_plmn_id_mcc(&enb->supported_ta_list
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[enb->num_of_supported_ta_list].plmn_id),
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ogs_plmn_id_mnc(&enb->supported_ta_list
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[enb->num_of_supported_ta_list].plmn_id),
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enb->supported_ta_list[enb->num_of_supported_ta_list].tac);
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enb->num_of_supported_ta_list++;
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}
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}
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if (maximum_number_of_enbs_is_reached()) {
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ogs_warn("S1-Setup failure:");
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ogs_warn(" Maximum number of eNBs reached");
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group = S1AP_Cause_PR_misc;
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cause = S1AP_CauseMisc_unspecified;
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ogs_assert(OGS_OK == s1ap_send_s1_setup_failure(enb, group, cause));
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return;
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}
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if (enb->num_of_supported_ta_list == 0) {
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ogs_warn("S1-Setup failure:");
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ogs_warn(" No supported TA exist in S1-Setup request");
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group = S1AP_Cause_PR_misc;
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cause = S1AP_CauseMisc_unspecified;
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ogs_assert(OGS_OK == s1ap_send_s1_setup_failure(enb, group, cause));
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return;
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}
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if (!served_tai_is_found(enb)) {
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ogs_warn("S1-Setup failure:");
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ogs_warn(" Cannot find Served TAI. Check 'mme.tai' configuration");
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group = S1AP_Cause_PR_misc;
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cause = S1AP_CauseMisc_unknown_PLMN;
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ogs_assert(OGS_OK == s1ap_send_s1_setup_failure(enb, group, cause));
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return;
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}
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enb->state.s1_setup_success = true;
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ogs_assert(OGS_OK == s1ap_send_s1_setup_response(enb));
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}
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void s1ap_handle_initial_ue_message(mme_enb_t *enb, ogs_s1ap_message_t *message)
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{
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int i;
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char buf[OGS_ADDRSTRLEN];
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S1AP_InitiatingMessage_t *initiatingMessage = NULL;
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S1AP_InitialUEMessage_t *InitialUEMessage = NULL;
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S1AP_InitialUEMessage_IEs_t *ie = NULL;
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S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
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S1AP_NAS_PDU_t *NAS_PDU = NULL;
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S1AP_TAI_t *TAI = NULL;
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S1AP_EUTRAN_CGI_t *EUTRAN_CGI = NULL;
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S1AP_S_TMSI_t *S_TMSI = NULL;
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S1AP_PLMNidentity_t *pLMNidentity = NULL;
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S1AP_TAC_t *tAC = NULL;
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S1AP_CellIdentity_t *cell_ID = NULL;
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enb_ue_t *enb_ue = NULL;
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ogs_assert(enb);
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ogs_assert(enb->sctp.sock);
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ogs_assert(message);
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initiatingMessage = message->choice.initiatingMessage;
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ogs_assert(initiatingMessage);
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InitialUEMessage = &initiatingMessage->value.choice.InitialUEMessage;
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ogs_assert(InitialUEMessage);
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ogs_info("InitialUEMessage");
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for (i = 0; i < InitialUEMessage->protocolIEs.list.count; i++) {
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ie = InitialUEMessage->protocolIEs.list.array[i];
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switch (ie->id) {
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case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
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ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
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break;
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case S1AP_ProtocolIE_ID_id_NAS_PDU:
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NAS_PDU = &ie->value.choice.NAS_PDU;
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break;
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case S1AP_ProtocolIE_ID_id_TAI:
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TAI = &ie->value.choice.TAI;
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break;
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case S1AP_ProtocolIE_ID_id_EUTRAN_CGI:
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EUTRAN_CGI = &ie->value.choice.EUTRAN_CGI;
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break;
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case S1AP_ProtocolIE_ID_id_S_TMSI:
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S_TMSI = &ie->value.choice.S_TMSI;
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break;
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default:
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break;
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}
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}
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ogs_debug(" IP[%s] ENB_ID[%d]",
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OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
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if (!ENB_UE_S1AP_ID) {
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ogs_error("No ENB_UE_S1AP_ID");
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ogs_assert(OGS_OK ==
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s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
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S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
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return;
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}
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enb_ue = enb_ue_find_by_enb_ue_s1ap_id(enb, *ENB_UE_S1AP_ID);
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if (!enb_ue) {
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enb_ue = enb_ue_add(enb, *ENB_UE_S1AP_ID);
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ogs_assert(enb_ue);
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/* Find MME_UE if S_TMSI included */
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if (S_TMSI) {
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served_gummei_t *served_gummei = &mme_self()->served_gummei[0];
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ogs_nas_eps_guti_t nas_guti;
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mme_ue_t *mme_ue = NULL;
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memset(&nas_guti, 0, sizeof(ogs_nas_eps_guti_t));
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/* Use the first configured plmn_id and mme group id */
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ogs_nas_from_plmn_id(&nas_guti.nas_plmn_id,
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&served_gummei->plmn_id[0]);
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nas_guti.mme_gid = served_gummei->mme_gid[0];
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/* size must be 1 */
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memcpy(&nas_guti.mme_code, S_TMSI->mMEC.buf, S_TMSI->mMEC.size);
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/* size must be 4 */
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memcpy(&nas_guti.m_tmsi, S_TMSI->m_TMSI.buf, S_TMSI->m_TMSI.size);
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nas_guti.m_tmsi = be32toh(nas_guti.m_tmsi);
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mme_ue = mme_ue_find_by_guti(&nas_guti);
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if (!mme_ue) {
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ogs_info("Unknown UE by S_TMSI[G:%d,C:%d,M_TMSI:0x%x]",
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nas_guti.mme_gid, nas_guti.mme_code, nas_guti.m_tmsi);
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} else {
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ogs_info(" S_TMSI[G:%d,C:%d,M_TMSI:0x%x] IMSI:[%s]",
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mme_ue->current.guti.mme_gid,
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mme_ue->current.guti.mme_code,
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mme_ue->current.guti.m_tmsi,
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MME_UE_HAVE_IMSI(mme_ue)
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? mme_ue->imsi_bcd : "Unknown");
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/* If NAS(mme_ue_t) has already been associated with
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* older S1(enb_ue_t) context */
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if (ECM_CONNECTED(mme_ue)) {
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/* Previous S1(enb_ue_t) context the holding timer(30secs)
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* is started.
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* Newly associated S1(enb_ue_t) context holding timer
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* is stopped. */
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ogs_debug("Start S1 Holding Timer");
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ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
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mme_ue->enb_ue->enb_ue_s1ap_id,
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mme_ue->enb_ue->mme_ue_s1ap_id);
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/* De-associate S1 with NAS/EMM */
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enb_ue_deassociate(mme_ue->enb_ue);
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ogs_assert(OGS_OK ==
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s1ap_send_ue_context_release_command(mme_ue->enb_ue,
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S1AP_Cause_PR_nas, S1AP_CauseNas_normal_release,
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S1AP_UE_CTX_REL_S1_CONTEXT_REMOVE, 0));
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}
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enb_ue_associate_mme_ue(enb_ue, mme_ue);
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}
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}
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}
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if (!NAS_PDU) {
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ogs_error("No NAS_PDU");
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ogs_assert(OGS_OK ==
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s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
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S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
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return;
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}
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if (!TAI) {
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ogs_error("No TAI");
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ogs_assert(OGS_OK ==
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s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
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S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
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return;
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}
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if (!EUTRAN_CGI) {
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ogs_error("No EUTRAN_CGI");
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ogs_assert(OGS_OK ==
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s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
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S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
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return;
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}
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pLMNidentity = &TAI->pLMNidentity;
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ogs_assert(pLMNidentity && pLMNidentity->size == sizeof(ogs_plmn_id_t));
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tAC = &TAI->tAC;
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ogs_assert(tAC && tAC->size == sizeof(uint16_t));
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memcpy(&enb_ue->saved.tai.plmn_id, pLMNidentity->buf,
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sizeof(enb_ue->saved.tai.plmn_id));
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memcpy(&enb_ue->saved.tai.tac, tAC->buf, sizeof(enb_ue->saved.tai.tac));
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enb_ue->saved.tai.tac = be16toh(enb_ue->saved.tai.tac);
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pLMNidentity = &EUTRAN_CGI->pLMNidentity;
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ogs_assert(pLMNidentity && pLMNidentity->size == sizeof(ogs_plmn_id_t));
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cell_ID = &EUTRAN_CGI->cell_ID;
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ogs_assert(cell_ID);
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memcpy(&enb_ue->saved.e_cgi.plmn_id, pLMNidentity->buf,
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sizeof(enb_ue->saved.e_cgi.plmn_id));
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memcpy(&enb_ue->saved.e_cgi.cell_id, cell_ID->buf,
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sizeof(enb_ue->saved.e_cgi.cell_id));
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enb_ue->saved.e_cgi.cell_id = (be32toh(enb_ue->saved.e_cgi.cell_id) >> 4);
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ogs_info(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d] TAC[%d] CellID[0x%x]",
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enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id,
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enb_ue->saved.tai.tac, enb_ue->saved.e_cgi.cell_id);
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s1ap_send_to_nas(enb_ue,
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S1AP_ProcedureCode_id_initialUEMessage, NAS_PDU);
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}
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void s1ap_handle_uplink_nas_transport(
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mme_enb_t *enb, ogs_s1ap_message_t *message)
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{
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char buf[OGS_ADDRSTRLEN];
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int i;
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S1AP_InitiatingMessage_t *initiatingMessage = NULL;
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S1AP_UplinkNASTransport_t *UplinkNASTransport = NULL;
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S1AP_UplinkNASTransport_IEs_t *ie = NULL;
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S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
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S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
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S1AP_NAS_PDU_t *NAS_PDU = NULL;
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S1AP_EUTRAN_CGI_t *EUTRAN_CGI = NULL;
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S1AP_TAI_t *TAI = NULL;
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S1AP_PLMNidentity_t *pLMNidentity = NULL;
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S1AP_TAC_t *tAC = NULL;
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S1AP_CellIdentity_t *cell_ID = NULL;
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enb_ue_t *enb_ue = NULL;
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ogs_assert(enb);
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ogs_assert(enb->sctp.sock);
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ogs_assert(message);
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initiatingMessage = message->choice.initiatingMessage;
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ogs_assert(initiatingMessage);
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UplinkNASTransport = &initiatingMessage->value.choice.UplinkNASTransport;
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ogs_assert(UplinkNASTransport);
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ogs_debug("UplinkNASTransport");
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for (i = 0; i < UplinkNASTransport->protocolIEs.list.count; i++) {
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ie = UplinkNASTransport->protocolIEs.list.array[i];
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switch (ie->id) {
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case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
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MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
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break;
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case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
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ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
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break;
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case S1AP_ProtocolIE_ID_id_NAS_PDU:
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NAS_PDU = &ie->value.choice.NAS_PDU;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_EUTRAN_CGI:
|
|
EUTRAN_CGI = &ie->value.choice.EUTRAN_CGI;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_TAI:
|
|
TAI = &ie->value.choice.TAI;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
if (!NAS_PDU) {
|
|
ogs_error("No NAS_PDU");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
if (!EUTRAN_CGI) {
|
|
ogs_error("No EUTRAN_CGI");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
if (!TAI) {
|
|
ogs_error("No TAI");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
pLMNidentity = &EUTRAN_CGI->pLMNidentity;
|
|
ogs_assert(pLMNidentity && pLMNidentity->size == sizeof(ogs_plmn_id_t));
|
|
cell_ID = &EUTRAN_CGI->cell_ID;
|
|
ogs_assert(cell_ID);
|
|
memcpy(&enb_ue->saved.e_cgi.plmn_id, pLMNidentity->buf,
|
|
sizeof(enb_ue->saved.e_cgi.plmn_id));
|
|
memcpy(&enb_ue->saved.e_cgi.cell_id, cell_ID->buf,
|
|
sizeof(enb_ue->saved.e_cgi.cell_id));
|
|
enb_ue->saved.e_cgi.cell_id = (be32toh(enb_ue->saved.e_cgi.cell_id) >> 4);
|
|
|
|
pLMNidentity = &TAI->pLMNidentity;
|
|
ogs_assert(pLMNidentity && pLMNidentity->size == sizeof(ogs_plmn_id_t));
|
|
tAC = &TAI->tAC;
|
|
ogs_assert(tAC && tAC->size == sizeof(uint16_t));
|
|
|
|
memcpy(&enb_ue->saved.tai.plmn_id, pLMNidentity->buf,
|
|
sizeof(enb_ue->saved.tai.plmn_id));
|
|
memcpy(&enb_ue->saved.tai.tac, tAC->buf, sizeof(enb_ue->saved.tai.tac));
|
|
enb_ue->saved.tai.tac = be16toh(enb_ue->saved.tai.tac);
|
|
|
|
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d] TAC[%d] CellID[0x%x]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id,
|
|
enb_ue->saved.tai.tac, enb_ue->saved.e_cgi.cell_id);
|
|
|
|
/* Copy Stream-No/TAI/ECGI from enb_ue */
|
|
if (enb_ue->mme_ue) {
|
|
mme_ue_t *mme_ue = enb_ue->mme_ue;
|
|
|
|
memcpy(&mme_ue->tai, &enb_ue->saved.tai, sizeof(ogs_eps_tai_t));
|
|
memcpy(&mme_ue->e_cgi, &enb_ue->saved.e_cgi, sizeof(ogs_e_cgi_t));
|
|
} else {
|
|
ogs_fatal("No UE Context in UplinkNASTransport");
|
|
ogs_assert_if_reached();
|
|
}
|
|
|
|
s1ap_send_to_nas(enb_ue,
|
|
S1AP_ProcedureCode_id_uplinkNASTransport, NAS_PDU);
|
|
}
|
|
|
|
void s1ap_handle_ue_capability_info_indication(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_InitiatingMessage_t *initiatingMessage = NULL;
|
|
S1AP_UECapabilityInfoIndication_t *UECapabilityInfoIndication = NULL;
|
|
|
|
S1AP_UECapabilityInfoIndicationIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_UERadioCapability_t *UERadioCapability = NULL;
|
|
|
|
enb_ue_t *enb_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
initiatingMessage = message->choice.initiatingMessage;
|
|
ogs_assert(initiatingMessage);
|
|
UECapabilityInfoIndication =
|
|
&initiatingMessage->value.choice.UECapabilityInfoIndication;
|
|
ogs_assert(UECapabilityInfoIndication);
|
|
|
|
ogs_debug("UECapabilityInfoIndication");
|
|
|
|
for (i = 0; i < UECapabilityInfoIndication->protocolIEs.list.count; i++) {
|
|
ie = UECapabilityInfoIndication->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_UERadioCapability:
|
|
UERadioCapability = &ie->value.choice.UERadioCapability;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
if (enb_ue->mme_ue) {
|
|
ogs_assert(UERadioCapability);
|
|
OGS_ASN_STORE_DATA(&enb_ue->mme_ue->ueRadioCapability,
|
|
UERadioCapability);
|
|
}
|
|
}
|
|
|
|
void s1ap_handle_initial_context_setup_response(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
int rv;
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_SuccessfulOutcome_t *successfulOutcome = NULL;
|
|
S1AP_InitialContextSetupResponse_t *InitialContextSetupResponse = NULL;
|
|
|
|
S1AP_InitialContextSetupResponseIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_E_RABSetupListCtxtSURes_t *E_RABSetupListCtxtSURes = NULL;
|
|
|
|
mme_ue_t *mme_ue = NULL;
|
|
enb_ue_t *enb_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
successfulOutcome = message->choice.successfulOutcome;
|
|
ogs_assert(successfulOutcome);
|
|
InitialContextSetupResponse =
|
|
&successfulOutcome->value.choice.InitialContextSetupResponse;
|
|
ogs_assert(InitialContextSetupResponse);
|
|
|
|
ogs_debug("InitialContextSetupResponse");
|
|
|
|
for (i = 0; i < InitialContextSetupResponse->protocolIEs.list.count; i++) {
|
|
ie = InitialContextSetupResponse->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_E_RABSetupListCtxtSURes:
|
|
E_RABSetupListCtxtSURes =
|
|
&ie->value.choice.E_RABSetupListCtxtSURes;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
mme_ue = enb_ue->mme_ue;
|
|
ogs_expect_or_return(mme_ue);
|
|
|
|
if (E_RABSetupListCtxtSURes) {
|
|
int uli_presence = 0;
|
|
|
|
ogs_list_init(&mme_ue->bearer_to_modify_list);
|
|
|
|
for (i = 0; i < E_RABSetupListCtxtSURes->list.count; i++) {
|
|
S1AP_E_RABSetupItemCtxtSUResIEs_t *item = NULL;
|
|
S1AP_E_RABSetupItemCtxtSURes_t *e_rab = NULL;
|
|
|
|
mme_bearer_t *bearer = NULL;
|
|
|
|
item = (S1AP_E_RABSetupItemCtxtSUResIEs_t *)
|
|
E_RABSetupListCtxtSURes->list.array[i];
|
|
if (!item) {
|
|
ogs_error("No S1AP_E_RABSetupItemCtxtSUResIEs_t");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
e_rab = &item->value.choice.E_RABSetupItemCtxtSURes;
|
|
if (!e_rab) {
|
|
ogs_error("No E_RABSetupItemCtxtSURes");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
bearer = mme_bearer_find_by_ue_ebi(mme_ue, e_rab->e_RAB_ID);
|
|
if (!bearer) {
|
|
ogs_error("No Bearer [%d]", (int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_E_RAB_ID));
|
|
return;
|
|
}
|
|
|
|
memcpy(&bearer->enb_s1u_teid, e_rab->gTP_TEID.buf,
|
|
sizeof(bearer->enb_s1u_teid));
|
|
bearer->enb_s1u_teid = be32toh(bearer->enb_s1u_teid);
|
|
rv = ogs_asn_BIT_STRING_to_ip(
|
|
&e_rab->transportLayerAddress, &bearer->enb_s1u_ip);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("No transportLayerAddress [%d]",
|
|
(int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol,
|
|
S1AP_CauseProtocol_abstract_syntax_error_falsely_constructed_message));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" EBI[%d] ENB-S1U-TEID[%d]",
|
|
bearer->ebi, bearer->enb_s1u_teid);
|
|
|
|
if (OGS_FSM_CHECK(&bearer->sm, esm_state_active)) {
|
|
ogs_debug(" NAS_EPS Type[%d]", mme_ue->nas_eps.type);
|
|
if (mme_ue->nas_eps.type != MME_EPS_TYPE_ATTACH_REQUEST) {
|
|
ogs_debug(" ### ULI PRESENT ###");
|
|
uli_presence = 1;
|
|
}
|
|
ogs_list_add(&mme_ue->bearer_to_modify_list,
|
|
&bearer->to_modify_node);
|
|
}
|
|
}
|
|
|
|
if (ogs_list_count(&mme_ue->bearer_to_modify_list)) {
|
|
ogs_assert(OGS_OK ==
|
|
mme_gtp_send_modify_bearer_request(mme_ue, uli_presence, 0));
|
|
}
|
|
}
|
|
|
|
if (MME_PAGING_ONGOING(mme_ue))
|
|
mme_send_after_paging(mme_ue, false);
|
|
}
|
|
|
|
void s1ap_handle_initial_context_setup_failure(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_UnsuccessfulOutcome_t *unsuccessfulOutcome = NULL;
|
|
S1AP_InitialContextSetupFailure_t *InitialContextSetupFailure = NULL;
|
|
|
|
S1AP_InitialContextSetupFailureIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_Cause_t *Cause = NULL;
|
|
|
|
mme_ue_t *mme_ue = NULL;
|
|
enb_ue_t *enb_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
unsuccessfulOutcome = message->choice.unsuccessfulOutcome;
|
|
ogs_assert(unsuccessfulOutcome);
|
|
InitialContextSetupFailure =
|
|
&unsuccessfulOutcome->value.choice.InitialContextSetupFailure;
|
|
ogs_assert(InitialContextSetupFailure);
|
|
|
|
ogs_debug("InitialContextSetupFailure");
|
|
|
|
for (i = 0; i < InitialContextSetupFailure->protocolIEs.list.count; i++) {
|
|
ie = InitialContextSetupFailure->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_Cause:
|
|
Cause = &ie->value.choice.Cause;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
if (!Cause) {
|
|
ogs_error("No Cause");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" Cause[Group:%d Cause:%d]",
|
|
Cause->present, (int)Cause->choice.radioNetwork);
|
|
|
|
mme_ue = enb_ue->mme_ue;
|
|
|
|
if (mme_ue) {
|
|
/*
|
|
* if T3450 is running, Attach complete will be sent.
|
|
* So, we need to clear all the timer at this point.
|
|
*/
|
|
CLEAR_SERVICE_INDICATOR(mme_ue);
|
|
CLEAR_MME_UE_ALL_TIMERS(mme_ue);
|
|
}
|
|
|
|
/*
|
|
* 19.2.2.3 in Spec 36.300
|
|
*
|
|
* In case of failure, eNB and MME behaviours are not mandated.
|
|
*
|
|
* Both implicit release (local release at each node) and
|
|
* explicit release (MME-initiated UE Context Release procedure)
|
|
* may in principle be adopted. The eNB should ensure
|
|
* that no hanging resources remain at the eNB.
|
|
*/
|
|
mme_send_release_access_bearer_or_ue_context_release(enb_ue);
|
|
}
|
|
|
|
void s1ap_handle_ue_context_modification_response(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_SuccessfulOutcome_t *successfulOutcome = NULL;
|
|
S1AP_UEContextModificationResponse_t *UEContextModificationResponse = NULL;
|
|
|
|
S1AP_UEContextModificationResponseIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
|
|
mme_ue_t *mme_ue = NULL;
|
|
enb_ue_t *enb_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
successfulOutcome = message->choice.successfulOutcome;
|
|
ogs_assert(successfulOutcome);
|
|
UEContextModificationResponse =
|
|
&successfulOutcome->value.choice.UEContextModificationResponse;
|
|
ogs_assert(UEContextModificationResponse);
|
|
|
|
ogs_debug("UEContextModificationResponse");
|
|
|
|
for (i = 0;
|
|
i < UEContextModificationResponse->protocolIEs.list.count; i++) {
|
|
ie = UEContextModificationResponse->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
mme_ue = enb_ue->mme_ue;
|
|
ogs_expect_or_return(mme_ue);
|
|
|
|
CLEAR_SERVICE_INDICATOR(mme_ue);
|
|
}
|
|
|
|
void s1ap_handle_ue_context_modification_failure(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_UnsuccessfulOutcome_t *unsuccessfulOutcome = NULL;
|
|
S1AP_UEContextModificationFailure_t *UEContextModificationFailure = NULL;
|
|
|
|
S1AP_UEContextModificationFailureIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_Cause_t *Cause = NULL;
|
|
|
|
enb_ue_t *enb_ue = NULL;
|
|
mme_ue_t *mme_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
unsuccessfulOutcome = message->choice.unsuccessfulOutcome;
|
|
ogs_assert(unsuccessfulOutcome);
|
|
UEContextModificationFailure =
|
|
&unsuccessfulOutcome->value.choice.UEContextModificationFailure;
|
|
ogs_assert(UEContextModificationFailure);
|
|
|
|
ogs_warn("UEContextModificationFailure");
|
|
|
|
for (i = 0; i < UEContextModificationFailure->protocolIEs.list.count; i++) {
|
|
ie = UEContextModificationFailure->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_Cause:
|
|
Cause = &ie->value.choice.Cause;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
if (!Cause) {
|
|
ogs_error("No Cause");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" Cause[Group:%d Cause:%d]",
|
|
Cause->present, (int)Cause->choice.radioNetwork);
|
|
|
|
mme_ue = enb_ue->mme_ue;
|
|
ogs_expect_or_return(mme_ue);
|
|
CLEAR_SERVICE_INDICATOR(mme_ue);
|
|
}
|
|
|
|
|
|
void s1ap_handle_e_rab_setup_response(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
int rv;
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_SuccessfulOutcome_t *successfulOutcome = NULL;
|
|
S1AP_E_RABSetupResponse_t *E_RABSetupResponse = NULL;
|
|
|
|
S1AP_E_RABSetupResponseIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_E_RABSetupListBearerSURes_t *E_RABSetupListBearerSURes = NULL;
|
|
S1AP_E_RABList_t *E_RABFailedToSetupListBearerSURes = NULL;
|
|
S1AP_CriticalityDiagnostics_t *CriticalityDiagnostics = NULL;
|
|
|
|
enb_ue_t *enb_ue = NULL;
|
|
mme_ue_t *mme_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
successfulOutcome = message->choice.successfulOutcome;
|
|
ogs_assert(successfulOutcome);
|
|
E_RABSetupResponse = &successfulOutcome->value.choice.E_RABSetupResponse;
|
|
ogs_assert(E_RABSetupResponse);
|
|
|
|
ogs_debug("E-RABSetupResponse");
|
|
|
|
for (i = 0; i < E_RABSetupResponse->protocolIEs.list.count; i++) {
|
|
ie = E_RABSetupResponse->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_E_RABSetupListBearerSURes:
|
|
E_RABSetupListBearerSURes =
|
|
&ie->value.choice.E_RABSetupListBearerSURes;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_E_RABFailedToSetupListBearerSURes:
|
|
E_RABFailedToSetupListBearerSURes =
|
|
&ie->value.choice.E_RABList;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_CriticalityDiagnostics:
|
|
CriticalityDiagnostics =
|
|
&ie->value.choice.CriticalityDiagnostics;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
mme_ue = enb_ue->mme_ue;
|
|
ogs_expect_or_return(mme_ue);
|
|
|
|
if (E_RABSetupListBearerSURes) {
|
|
for (i = 0; i < E_RABSetupListBearerSURes->list.count; i++) {
|
|
S1AP_E_RABSetupItemBearerSUResIEs_t *item = NULL;
|
|
S1AP_E_RABSetupItemBearerSURes_t *e_rab = NULL;
|
|
|
|
mme_bearer_t *bearer = NULL;
|
|
|
|
item = (S1AP_E_RABSetupItemBearerSUResIEs_t *)
|
|
E_RABSetupListBearerSURes->list.array[i];
|
|
if (!item) {
|
|
ogs_error("No S1AP_E_RABSetupItemBearerSUResIEs_t");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol,
|
|
S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
e_rab = &item->value.choice.E_RABSetupItemBearerSURes;
|
|
if (!e_rab) {
|
|
ogs_error("No E_RABSetupItemBearerSURes");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol,
|
|
S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
bearer = mme_bearer_find_by_ue_ebi(mme_ue, e_rab->e_RAB_ID);
|
|
if (!bearer) {
|
|
ogs_error("No Bearer [%d]", (int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_E_RAB_ID));
|
|
return;
|
|
}
|
|
|
|
memcpy(&bearer->enb_s1u_teid, e_rab->gTP_TEID.buf,
|
|
sizeof(bearer->enb_s1u_teid));
|
|
bearer->enb_s1u_teid = be32toh(bearer->enb_s1u_teid);
|
|
rv = ogs_asn_BIT_STRING_to_ip(
|
|
&e_rab->transportLayerAddress, &bearer->enb_s1u_ip);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("No transportLayerAddress [%d]",
|
|
(int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol,
|
|
S1AP_CauseProtocol_abstract_syntax_error_falsely_constructed_message));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" EBI[%d]", bearer->ebi);
|
|
|
|
if (OGS_FSM_CHECK(&bearer->sm, esm_state_active)) {
|
|
mme_bearer_t *linked_bearer = mme_linked_bearer(bearer);
|
|
ogs_assert(linked_bearer);
|
|
ogs_debug(" Linked-EBI[%d]", linked_bearer->ebi);
|
|
|
|
if (bearer->ebi == linked_bearer->ebi) {
|
|
ogs_list_init(&mme_ue->bearer_to_modify_list);
|
|
ogs_list_add(&mme_ue->bearer_to_modify_list,
|
|
&bearer->to_modify_node);
|
|
ogs_assert(OGS_OK ==
|
|
mme_gtp_send_modify_bearer_request(mme_ue, 0, 0));
|
|
} else {
|
|
ogs_assert(OGS_OK ==
|
|
mme_gtp_send_create_bearer_response(
|
|
bearer, OGS_GTP2_CAUSE_REQUEST_ACCEPTED));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (E_RABFailedToSetupListBearerSURes) {
|
|
ogs_debug("E_RABFailedToSetupListBearerSURes");
|
|
for (i = 0; i < E_RABFailedToSetupListBearerSURes->list.count; i++) {
|
|
S1AP_E_RABItem_t *item = (S1AP_E_RABItem_t *)
|
|
E_RABFailedToSetupListBearerSURes->list.array[i];
|
|
|
|
if (!item) {
|
|
ogs_error("No S1AP_E_RABItem_t");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol,
|
|
S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug("RAB_ID: %d", (int)item->e_RAB_ID);
|
|
ogs_debug(" Cause[Group:%d Cause:%d]",
|
|
(int)item->cause.present, (int)item->cause.choice.radioNetwork);
|
|
}
|
|
}
|
|
|
|
if (CriticalityDiagnostics) {
|
|
ogs_debug("CriticalityDiagnostics");
|
|
S1AP_ProcedureCode_t *procedureCode =
|
|
CriticalityDiagnostics->procedureCode;
|
|
S1AP_TriggeringMessage_t *triggeringMessage =
|
|
CriticalityDiagnostics->triggeringMessage;
|
|
S1AP_Criticality_t *procedureCriticality =
|
|
CriticalityDiagnostics->procedureCriticality;
|
|
if (procedureCode) {
|
|
ogs_debug("procedureCode: %lld",
|
|
(long long)procedureCode);
|
|
}
|
|
if (triggeringMessage) {
|
|
ogs_debug("triggeringMessage: %lld",
|
|
(long long)triggeringMessage);
|
|
}
|
|
if (procedureCriticality) {
|
|
ogs_debug("procedureCriticality: %lld",
|
|
(long long)procedureCriticality);
|
|
}
|
|
}
|
|
}
|
|
|
|
void s1ap_handle_ue_context_release_request(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_InitiatingMessage_t *initiatingMessage = NULL;
|
|
S1AP_UEContextReleaseRequest_t *UEContextReleaseRequest = NULL;
|
|
|
|
S1AP_UEContextReleaseRequest_IEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_Cause_t *Cause = NULL;
|
|
|
|
enb_ue_t *enb_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
initiatingMessage = message->choice.initiatingMessage;
|
|
ogs_assert(initiatingMessage);
|
|
UEContextReleaseRequest =
|
|
&initiatingMessage->value.choice.UEContextReleaseRequest;
|
|
ogs_assert(UEContextReleaseRequest);
|
|
|
|
ogs_debug("UEContextReleaseRequest");
|
|
|
|
for (i = 0; i < UEContextReleaseRequest->protocolIEs.list.count; i++) {
|
|
ie = UEContextReleaseRequest->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_Cause:
|
|
Cause = &ie->value.choice.Cause;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_warn("No ENB UE Context : MME_UE_S1AP_ID[%d]",
|
|
(int)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb,
|
|
MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
if (!Cause) {
|
|
ogs_error("No Cause");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" Cause[Group:%d Cause:%d]",
|
|
Cause->present, (int)Cause->choice.radioNetwork);
|
|
|
|
switch (Cause->present) {
|
|
case S1AP_Cause_PR_radioNetwork:
|
|
case S1AP_Cause_PR_transport:
|
|
case S1AP_Cause_PR_protocol:
|
|
case S1AP_Cause_PR_misc:
|
|
break;
|
|
case S1AP_Cause_PR_nas:
|
|
ogs_warn("NAS-Cause[%d]", (int)Cause->choice.nas);
|
|
break;
|
|
default:
|
|
ogs_warn("Invalid cause group[%d]", Cause->present);
|
|
break;
|
|
}
|
|
|
|
mme_send_release_access_bearer_or_ue_context_release(enb_ue);
|
|
}
|
|
|
|
void s1ap_handle_ue_context_release_complete(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_SuccessfulOutcome_t *successfulOutcome = NULL;
|
|
S1AP_UEContextReleaseComplete_t *UEContextReleaseComplete = NULL;
|
|
|
|
S1AP_UEContextReleaseComplete_IEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
|
|
enb_ue_t *enb_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
successfulOutcome = message->choice.successfulOutcome;
|
|
ogs_assert(successfulOutcome);
|
|
UEContextReleaseComplete =
|
|
&successfulOutcome->value.choice.UEContextReleaseComplete;
|
|
ogs_assert(UEContextReleaseComplete);
|
|
|
|
ogs_debug("UEContextReleaseComplete");
|
|
|
|
for (i = 0; i < UEContextReleaseComplete->protocolIEs.list.count; i++) {
|
|
ie = UEContextReleaseComplete->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_warn("No ENB UE Context : MME_UE_S1AP_ID[%d]",
|
|
(int)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb,
|
|
MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
s1ap_handle_ue_context_release_action(enb_ue);
|
|
}
|
|
|
|
void s1ap_handle_ue_context_release_action(enb_ue_t *enb_ue)
|
|
{
|
|
mme_ue_t *mme_ue = NULL;
|
|
|
|
ogs_assert(enb_ue);
|
|
|
|
if (enb_ue_cycle(enb_ue) == NULL) {
|
|
ogs_error("S1 context has already been removed");
|
|
return;
|
|
}
|
|
|
|
mme_ue = enb_ue->mme_ue;
|
|
|
|
ogs_info("UE Context Release [Action:%d]", enb_ue->ue_ctx_rel_action);
|
|
ogs_info(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
if (mme_ue) {
|
|
ogs_info(" IMSI[%s]", mme_ue->imsi_bcd);
|
|
|
|
/*
|
|
* An assert occurs when a NAS message retransmission occurs.
|
|
*
|
|
* Because there is no `enb_ue` context.
|
|
*
|
|
* Therefore, before removing enb_ue, all Timers must be stopped
|
|
* to prevent retransmission of NAS messages.
|
|
*/
|
|
CLEAR_MME_UE_ALL_TIMERS(mme_ue);
|
|
}
|
|
|
|
switch (enb_ue->ue_ctx_rel_action) {
|
|
case S1AP_UE_CTX_REL_S1_CONTEXT_REMOVE:
|
|
ogs_debug(" Action: S1 context remove");
|
|
enb_ue_remove(enb_ue);
|
|
break;
|
|
case S1AP_UE_CTX_REL_S1_REMOVE_AND_UNLINK:
|
|
ogs_debug(" Action: S1 normal release");
|
|
enb_ue_remove(enb_ue);
|
|
ogs_expect_or_return(mme_ue);
|
|
enb_ue_unlink(mme_ue);
|
|
break;
|
|
case S1AP_UE_CTX_REL_UE_CONTEXT_REMOVE:
|
|
ogs_debug(" Action: UE context remove");
|
|
enb_ue_remove(enb_ue);
|
|
ogs_expect_or_return(mme_ue);
|
|
|
|
mme_ue_hash_remove(mme_ue);
|
|
mme_ue_remove(mme_ue);
|
|
break;
|
|
case S1AP_UE_CTX_REL_S1_HANDOVER_COMPLETE:
|
|
ogs_debug(" Action: S1 handover complete");
|
|
|
|
enb_ue_source_deassociate_target(enb_ue);
|
|
enb_ue_remove(enb_ue);
|
|
|
|
ogs_expect_or_return(mme_ue);
|
|
if (mme_ue_have_indirect_tunnel(mme_ue) == true) {
|
|
ogs_assert(OGS_OK ==
|
|
mme_gtp_send_delete_indirect_data_forwarding_tunnel_request(
|
|
mme_ue, OGS_GTP_DELETE_INDIRECT_HANDOVER_COMPLETE));
|
|
} else {
|
|
ogs_warn("Check your eNodeB");
|
|
ogs_warn(" No INDIRECT TUNNEL");
|
|
ogs_warn(" Packet could be dropped during S1-Handover");
|
|
mme_ue_clear_indirect_tunnel(mme_ue);
|
|
}
|
|
break;
|
|
case S1AP_UE_CTX_REL_S1_HANDOVER_CANCEL:
|
|
ogs_warn(" Action: S1 handover cancel");
|
|
|
|
enb_ue_source_deassociate_target(enb_ue);
|
|
enb_ue_remove(enb_ue);
|
|
|
|
ogs_expect_or_return(mme_ue);
|
|
if (mme_ue_have_indirect_tunnel(mme_ue) == true) {
|
|
ogs_assert(OGS_OK ==
|
|
mme_gtp_send_delete_indirect_data_forwarding_tunnel_request(
|
|
mme_ue, OGS_GTP_DELETE_INDIRECT_HANDOVER_CANCEL));
|
|
} else {
|
|
ogs_warn("Check your eNodeB");
|
|
ogs_warn(" No INDIRECT TUNNEL");
|
|
ogs_warn(" Packet could be dropped during S1-Handover");
|
|
mme_ue_clear_indirect_tunnel(mme_ue);
|
|
|
|
ogs_expect_or_return(mme_ue->enb_ue);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_handover_cancel_ack(mme_ue->enb_ue));
|
|
}
|
|
break;
|
|
case S1AP_UE_CTX_REL_S1_HANDOVER_FAILURE:
|
|
ogs_warn(" Action: S1 handover failure");
|
|
|
|
enb_ue_source_deassociate_target(enb_ue);
|
|
enb_ue_remove(enb_ue);
|
|
|
|
ogs_expect_or_return(mme_ue);
|
|
if (mme_ue_have_indirect_tunnel(mme_ue) == true) {
|
|
ogs_error("Check your eNodeB");
|
|
ogs_error(" We found INDIRECT TUNNEL in HandoverFailure");
|
|
mme_ue_clear_indirect_tunnel(mme_ue);
|
|
}
|
|
break;
|
|
case S1AP_UE_CTX_REL_S1_PAGING:
|
|
ogs_debug(" Action: S1 paging");
|
|
enb_ue_remove(enb_ue);
|
|
ogs_expect_or_return(mme_ue);
|
|
enb_ue_unlink(mme_ue);
|
|
|
|
ogs_assert(OGS_OK == s1ap_send_paging(mme_ue, S1AP_CNDomain_ps));
|
|
break;
|
|
default:
|
|
ogs_error("Invalid Action[%d]", enb_ue->ue_ctx_rel_action);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void s1ap_handle_e_rab_modification_indication(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int rv, i;
|
|
|
|
S1AP_InitiatingMessage_t *initiatingMessage = NULL;
|
|
S1AP_E_RABModificationIndication_t *E_RABModificationIndication = NULL;
|
|
|
|
S1AP_E_RABModificationIndicationIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_E_RABToBeModifiedListBearerModInd_t
|
|
*E_RABToBeModifiedListBearerModInd = NULL;
|
|
|
|
enb_ue_t *enb_ue = NULL;
|
|
mme_ue_t *mme_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
initiatingMessage = message->choice.initiatingMessage;
|
|
ogs_assert(initiatingMessage);
|
|
E_RABModificationIndication = &initiatingMessage->value.choice.E_RABModificationIndication;
|
|
ogs_assert(E_RABModificationIndication);
|
|
|
|
ogs_info("E_RABModificationIndication");
|
|
|
|
for (i = 0; i < E_RABModificationIndication->protocolIEs.list.count; i++) {
|
|
ie = E_RABModificationIndication->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_E_RABToBeModifiedListBearerModInd:
|
|
E_RABToBeModifiedListBearerModInd =
|
|
&ie->value.choice.E_RABToBeModifiedListBearerModInd;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_warn("No ENB UE Context : MME_UE_S1AP_ID[%d]",
|
|
(int)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb,
|
|
MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
if (!E_RABToBeModifiedListBearerModInd) {
|
|
ogs_error("No E_RABToBeModifiedListBearerModInd");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
mme_ue = enb_ue->mme_ue;
|
|
ogs_expect_or_return(mme_ue);
|
|
|
|
ogs_list_init(&mme_ue->bearer_to_modify_list);
|
|
|
|
for (i = 0; i < E_RABToBeModifiedListBearerModInd->list.count; i++) {
|
|
S1AP_E_RABToBeModifiedItemBearerModIndIEs_t *item = NULL;
|
|
S1AP_E_RABToBeModifiedItemBearerModInd_t *e_rab = NULL;
|
|
|
|
mme_bearer_t *bearer = NULL;
|
|
|
|
item = (S1AP_E_RABToBeModifiedItemBearerModIndIEs_t *)
|
|
E_RABToBeModifiedListBearerModInd->list.array[i];
|
|
if (!item) {
|
|
ogs_error("No S1AP_E_RABToBeModifiedItemBearerModIndIEs_t");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
e_rab = &item->value.choice.E_RABToBeModifiedItemBearerModInd;
|
|
if (!e_rab) {
|
|
ogs_error("No E_RABToBeModifiedItemBearerModInd");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
bearer = mme_bearer_find_by_ue_ebi(mme_ue, e_rab->e_RAB_ID);
|
|
if (!bearer) {
|
|
ogs_error("No Bearer [%d]", (int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_E_RAB_ID));
|
|
return;
|
|
}
|
|
|
|
memcpy(&bearer->enb_s1u_teid, e_rab->dL_GTP_TEID.buf,
|
|
sizeof(bearer->enb_s1u_teid));
|
|
bearer->enb_s1u_teid = be32toh(bearer->enb_s1u_teid);
|
|
rv = ogs_asn_BIT_STRING_to_ip(
|
|
&e_rab->transportLayerAddress, &bearer->enb_s1u_ip);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("No transportLayerAddress [%d]",
|
|
(int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol,
|
|
S1AP_CauseProtocol_abstract_syntax_error_falsely_constructed_message));
|
|
return;
|
|
}
|
|
|
|
ogs_list_add(&mme_ue->bearer_to_modify_list, &bearer->to_modify_node);
|
|
}
|
|
|
|
if (ogs_list_count(&mme_ue->bearer_to_modify_list)) {
|
|
ogs_assert(OGS_OK == mme_gtp_send_modify_bearer_request(
|
|
mme_ue, 0, OGS_GTP_MODIFY_IN_E_RAB_MODIFICATION));
|
|
}
|
|
}
|
|
|
|
void s1ap_handle_path_switch_request(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
int rv;
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_InitiatingMessage_t *initiatingMessage = NULL;
|
|
S1AP_PathSwitchRequest_t *PathSwitchRequest = NULL;
|
|
|
|
S1AP_PathSwitchRequestIEs_t *ie = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_E_RABToBeSwitchedDLList_t *E_RABToBeSwitchedDLList = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_EUTRAN_CGI_t *EUTRAN_CGI = NULL;
|
|
S1AP_TAI_t *TAI = NULL;
|
|
S1AP_UESecurityCapabilities_t *UESecurityCapabilities = NULL;
|
|
|
|
S1AP_PLMNidentity_t *pLMNidentity = NULL;
|
|
S1AP_CellIdentity_t *cell_ID = NULL;
|
|
S1AP_TAC_t *tAC = NULL;
|
|
S1AP_EncryptionAlgorithms_t *encryptionAlgorithms = NULL;
|
|
S1AP_IntegrityProtectionAlgorithms_t *integrityProtectionAlgorithms = NULL;
|
|
uint16_t eea = 0, eia = 0;
|
|
uint8_t eea0 = 0, eia0 = 0;
|
|
|
|
enb_ue_t *enb_ue = NULL;
|
|
mme_ue_t *mme_ue = NULL;
|
|
ogs_pkbuf_t *s1apbuf = NULL;
|
|
|
|
sgw_relocation_e relocation;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
initiatingMessage = message->choice.initiatingMessage;
|
|
ogs_assert(initiatingMessage);
|
|
PathSwitchRequest = &initiatingMessage->value.choice.PathSwitchRequest;
|
|
ogs_assert(PathSwitchRequest);
|
|
|
|
ogs_info("PathSwitchRequest");
|
|
|
|
for (i = 0; i < PathSwitchRequest->protocolIEs.list.count; i++) {
|
|
ie = PathSwitchRequest->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_E_RABToBeSwitchedDLList:
|
|
E_RABToBeSwitchedDLList =
|
|
&ie->value.choice.E_RABToBeSwitchedDLList;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_SourceMME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_EUTRAN_CGI:
|
|
EUTRAN_CGI = &ie->value.choice.EUTRAN_CGI;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_TAI:
|
|
TAI = &ie->value.choice.TAI;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_UESecurityCapabilities:
|
|
UESecurityCapabilities = &ie->value.choice.UESecurityCapabilities;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!enb_ue) {
|
|
ogs_error("Cannot find UE from sourceMME-UE-S1AP-ID[%d] and eNB[%s:%d]",
|
|
(int)*MME_UE_S1AP_ID,
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
s1apbuf = s1ap_build_path_switch_failure(
|
|
*ENB_UE_S1AP_ID, *MME_UE_S1AP_ID,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id);
|
|
ogs_expect_or_return(s1apbuf);
|
|
|
|
ogs_expect(OGS_OK ==
|
|
s1ap_send_to_enb(enb, s1apbuf, S1AP_NON_UE_SIGNALLING));
|
|
return;
|
|
}
|
|
|
|
ogs_info(" OLD ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
if (!EUTRAN_CGI) {
|
|
ogs_error("No EUTRAN_CGI");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
pLMNidentity = &EUTRAN_CGI->pLMNidentity;
|
|
ogs_assert(pLMNidentity && pLMNidentity->size == sizeof(ogs_plmn_id_t));
|
|
cell_ID = &EUTRAN_CGI->cell_ID;
|
|
ogs_assert(cell_ID);
|
|
|
|
if (!TAI) {
|
|
ogs_error("No TAI");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
pLMNidentity = &TAI->pLMNidentity;
|
|
ogs_assert(pLMNidentity && pLMNidentity->size == sizeof(ogs_plmn_id_t));
|
|
tAC = &TAI->tAC;
|
|
ogs_assert(tAC && tAC->size == sizeof(uint16_t));
|
|
|
|
if (!E_RABToBeSwitchedDLList) {
|
|
ogs_error("No E_RABToBeSwitchedDLList");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
mme_ue = enb_ue->mme_ue;
|
|
ogs_expect_or_return(mme_ue);
|
|
|
|
if (!SECURITY_CONTEXT_IS_VALID(mme_ue)) {
|
|
ogs_error("No Security Context");
|
|
s1apbuf = s1ap_build_path_switch_failure(
|
|
*ENB_UE_S1AP_ID, *MME_UE_S1AP_ID,
|
|
S1AP_Cause_PR_nas, S1AP_CauseNas_authentication_failure);
|
|
ogs_expect_or_return(s1apbuf);
|
|
|
|
s1ap_send_to_enb_ue(enb_ue, s1apbuf);
|
|
return;
|
|
}
|
|
|
|
ogs_info(" OLD TAI[PLMN_ID:%06x,TAC:%d]",
|
|
ogs_plmn_id_hexdump(&mme_ue->tai.plmn_id),
|
|
mme_ue->tai.tac);
|
|
ogs_info(" OLD E_CGI[PLMN_ID:%06x,CELL_ID:0x%x]",
|
|
ogs_plmn_id_hexdump(&mme_ue->e_cgi.plmn_id),
|
|
mme_ue->e_cgi.cell_id);
|
|
|
|
/* Update ENB-UE-S1AP-ID */
|
|
enb_ue->enb_ue_s1ap_id = *ENB_UE_S1AP_ID;
|
|
|
|
/* Change enb_ue to the NEW eNB */
|
|
enb_ue_switch_to_enb(enb_ue, enb);
|
|
|
|
ogs_info(" NEW ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
enb_ue->enb_ue_s1ap_id, enb_ue->mme_ue_s1ap_id);
|
|
|
|
memcpy(&enb_ue->saved.tai.plmn_id, pLMNidentity->buf,
|
|
sizeof(enb_ue->saved.tai.plmn_id));
|
|
memcpy(&enb_ue->saved.tai.tac, tAC->buf, sizeof(enb_ue->saved.tai.tac));
|
|
enb_ue->saved.tai.tac = be16toh(enb_ue->saved.tai.tac);
|
|
|
|
memcpy(&enb_ue->saved.e_cgi.plmn_id, pLMNidentity->buf,
|
|
sizeof(enb_ue->saved.e_cgi.plmn_id));
|
|
memcpy(&enb_ue->saved.e_cgi.cell_id, cell_ID->buf,
|
|
sizeof(enb_ue->saved.e_cgi.cell_id));
|
|
enb_ue->saved.e_cgi.cell_id = (be32toh(enb_ue->saved.e_cgi.cell_id) >> 4);
|
|
|
|
ogs_info(" TAI[PLMN_ID:%06x,TAC:%d]",
|
|
ogs_plmn_id_hexdump(&enb_ue->saved.tai.plmn_id),
|
|
enb_ue->saved.tai.tac);
|
|
ogs_info(" E_CGI[PLMN_ID:%06x,CELL_ID:0x%x]",
|
|
ogs_plmn_id_hexdump(&enb_ue->saved.e_cgi.plmn_id),
|
|
enb_ue->saved.e_cgi.cell_id);
|
|
|
|
/* Copy Stream-No/TAI/ECGI from enb_ue */
|
|
mme_ue->enb_ostream_id = enb_ue->enb_ostream_id;
|
|
memcpy(&mme_ue->tai, &enb_ue->saved.tai, sizeof(ogs_eps_tai_t));
|
|
memcpy(&mme_ue->e_cgi, &enb_ue->saved.e_cgi, sizeof(ogs_e_cgi_t));
|
|
|
|
ogs_assert(UESecurityCapabilities);
|
|
encryptionAlgorithms =
|
|
&UESecurityCapabilities->encryptionAlgorithms;
|
|
integrityProtectionAlgorithms =
|
|
&UESecurityCapabilities->integrityProtectionAlgorithms;
|
|
|
|
memcpy(&eea, encryptionAlgorithms->buf, sizeof(eea));
|
|
eea = be16toh(eea);
|
|
eea0 = mme_ue->ue_network_capability.eea0;
|
|
mme_ue->ue_network_capability.eea = eea >> 9;
|
|
mme_ue->ue_network_capability.eea0 = eea0;
|
|
|
|
memcpy(&eia, integrityProtectionAlgorithms->buf, sizeof(eia));
|
|
eia = be16toh(eia);
|
|
eia0 = mme_ue->ue_network_capability.eia0;
|
|
mme_ue->ue_network_capability.eia = eia >> 9;
|
|
mme_ue->ue_network_capability.eia0 = eia0;
|
|
|
|
/* Update Security Context (NextHop) */
|
|
mme_ue->nhcc++;
|
|
ogs_kdf_nh_enb(mme_ue->kasme, mme_ue->nh, mme_ue->nh);
|
|
|
|
ogs_list_init(&mme_ue->bearer_to_modify_list);
|
|
|
|
for (i = 0; i < E_RABToBeSwitchedDLList->list.count; i++) {
|
|
S1AP_E_RABToBeSwitchedDLItemIEs_t *item = NULL;
|
|
S1AP_E_RABToBeSwitchedDLItem_t *e_rab = NULL;
|
|
|
|
mme_bearer_t *bearer = NULL;
|
|
|
|
item = (S1AP_E_RABToBeSwitchedDLItemIEs_t *)
|
|
E_RABToBeSwitchedDLList->list.array[i];
|
|
if (!item) {
|
|
ogs_error("No S1AP_E_RABToBeSwitchedDLItemIEs_t");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
e_rab = &item->value.choice.E_RABToBeSwitchedDLItem;
|
|
if (!e_rab) {
|
|
ogs_error("No E_RABToBeSwitchedDLItem");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
bearer = mme_bearer_find_by_ue_ebi(mme_ue, e_rab->e_RAB_ID);
|
|
if (!bearer) {
|
|
ogs_error("No Bearer [%d]", (int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_E_RAB_ID));
|
|
return;
|
|
}
|
|
|
|
memcpy(&bearer->enb_s1u_teid, e_rab->gTP_TEID.buf,
|
|
sizeof(bearer->enb_s1u_teid));
|
|
bearer->enb_s1u_teid = be32toh(bearer->enb_s1u_teid);
|
|
rv = ogs_asn_BIT_STRING_to_ip(
|
|
&e_rab->transportLayerAddress, &bearer->enb_s1u_ip);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("No transportLayerAddress [%d]",
|
|
(int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol,
|
|
S1AP_CauseProtocol_abstract_syntax_error_falsely_constructed_message));
|
|
return;
|
|
}
|
|
|
|
ogs_list_add(
|
|
&mme_ue->bearer_to_modify_list, &bearer->to_modify_node);
|
|
}
|
|
|
|
relocation = sgw_ue_check_if_relocated(mme_ue);
|
|
if (relocation == SGW_WITHOUT_RELOCATION) {
|
|
if (ogs_list_count(&mme_ue->bearer_to_modify_list)) {
|
|
ogs_assert(OGS_OK == mme_gtp_send_modify_bearer_request(
|
|
mme_ue, 1, OGS_GTP_MODIFY_IN_PATH_SWITCH_REQUEST));
|
|
}
|
|
} else if (relocation == SGW_WITH_RELOCATION) {
|
|
mme_sess_t *sess = NULL;
|
|
|
|
ogs_list_for_each(&mme_ue->sess_list, sess) {
|
|
GTP_COUNTER_INCREMENT(
|
|
mme_ue, GTP_COUNTER_CREATE_SESSION_BY_PATH_SWITCH);
|
|
|
|
ogs_assert(OGS_OK ==
|
|
mme_gtp_send_create_session_request(
|
|
sess, OGS_GTP_CREATE_IN_PATH_SWITCH_REQUEST));
|
|
}
|
|
} else if (relocation == SGW_HAS_ALREADY_BEEN_RELOCATED) {
|
|
ogs_error("SGW has already been relocated");
|
|
}
|
|
|
|
}
|
|
|
|
void s1ap_handle_enb_configuration_transfer(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message, ogs_pkbuf_t *pkbuf)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_InitiatingMessage_t *initiatingMessage = NULL;
|
|
S1AP_ENBConfigurationTransfer_t *ENBConfigurationTransfer = NULL;
|
|
|
|
S1AP_ENBConfigurationTransferIEs_t *ie = NULL;
|
|
S1AP_SONConfigurationTransfer_t *SONConfigurationTransfer = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
initiatingMessage = message->choice.initiatingMessage;
|
|
ogs_assert(initiatingMessage);
|
|
ENBConfigurationTransfer =
|
|
&initiatingMessage->value.choice.ENBConfigurationTransfer;
|
|
ogs_assert(ENBConfigurationTransfer);
|
|
|
|
ogs_debug("ENBConfigurationTransfer");
|
|
for (i = 0; i < ENBConfigurationTransfer->protocolIEs.list.count; i++) {
|
|
ie = ENBConfigurationTransfer->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_SONConfigurationTransferECT:
|
|
SONConfigurationTransfer =
|
|
&ie->value.choice.SONConfigurationTransfer;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (SONConfigurationTransfer) {
|
|
S1AP_TargeteNB_ID_t *targeteNB_ID =
|
|
&SONConfigurationTransfer->targeteNB_ID;
|
|
S1AP_SourceeNB_ID_t *sourceeNB_ID =
|
|
&SONConfigurationTransfer->sourceeNB_ID;
|
|
|
|
mme_enb_t *target_enb = NULL;
|
|
uint32_t source_enb_id, target_enb_id;
|
|
uint16_t source_tac, target_tac;
|
|
|
|
ogs_s1ap_ENB_ID_to_uint32(
|
|
&sourceeNB_ID->global_ENB_ID.eNB_ID, &source_enb_id);
|
|
ogs_s1ap_ENB_ID_to_uint32(
|
|
&targeteNB_ID->global_ENB_ID.eNB_ID, &target_enb_id);
|
|
|
|
memcpy(&source_tac, sourceeNB_ID->selected_TAI.tAC.buf,
|
|
sizeof(source_tac));
|
|
source_tac = be16toh(source_tac);
|
|
memcpy(&target_tac, targeteNB_ID->selected_TAI.tAC.buf,
|
|
sizeof(target_tac));
|
|
target_tac = be16toh(target_tac);
|
|
|
|
ogs_debug(" Source : ENB_ID[%s:%d], TAC[%d]",
|
|
sourceeNB_ID->global_ENB_ID.eNB_ID.present ==
|
|
S1AP_ENB_ID_PR_homeENB_ID ? "Home" :
|
|
sourceeNB_ID->global_ENB_ID.eNB_ID.present ==
|
|
S1AP_ENB_ID_PR_macroENB_ID ? "Macro" : "Others",
|
|
source_enb_id, source_tac);
|
|
ogs_debug(" Target : ENB_ID[%s:%d], TAC[%d]",
|
|
targeteNB_ID->global_ENB_ID.eNB_ID.present ==
|
|
S1AP_ENB_ID_PR_homeENB_ID ? "Home" :
|
|
targeteNB_ID->global_ENB_ID.eNB_ID.present ==
|
|
S1AP_ENB_ID_PR_macroENB_ID ? "Macro" : "Others",
|
|
target_enb_id, target_tac);
|
|
|
|
target_enb = mme_enb_find_by_enb_id(target_enb_id);
|
|
if (target_enb == NULL) {
|
|
ogs_error("eNB configuration transfer : "
|
|
"cannot find target eNB-id[0x%x]", target_enb_id);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_targetID));
|
|
return;
|
|
}
|
|
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_mme_configuration_transfer(
|
|
target_enb, SONConfigurationTransfer));
|
|
}
|
|
}
|
|
|
|
void s1ap_handle_handover_required(mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_InitiatingMessage_t *initiatingMessage = NULL;
|
|
S1AP_HandoverRequired_t *HandoverRequired = NULL;
|
|
|
|
S1AP_HandoverRequiredIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_HandoverType_t *HandoverType = NULL;
|
|
S1AP_Cause_t *Cause = NULL;
|
|
S1AP_TargetID_t *TargetID = NULL;
|
|
S1AP_Source_ToTarget_TransparentContainer_t
|
|
*Source_ToTarget_TransparentContainer = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
initiatingMessage = message->choice.initiatingMessage;
|
|
ogs_assert(initiatingMessage);
|
|
HandoverRequired = &initiatingMessage->value.choice.HandoverRequired;
|
|
ogs_assert(HandoverRequired);
|
|
|
|
enb_ue_t *source_ue = NULL;
|
|
mme_ue_t *mme_ue = NULL;
|
|
mme_enb_t *target_enb = NULL;
|
|
uint32_t target_enb_id = 0;
|
|
|
|
ogs_debug("HandoverRequired");
|
|
for (i = 0; i < HandoverRequired->protocolIEs.list.count; i++) {
|
|
ie = HandoverRequired->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_HandoverType:
|
|
HandoverType = &ie->value.choice.HandoverType;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_Cause:
|
|
Cause = &ie->value.choice.Cause;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_TargetID:
|
|
TargetID = &ie->value.choice.TargetID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_Source_ToTarget_TransparentContainer:
|
|
Source_ToTarget_TransparentContainer =
|
|
&ie->value.choice.Source_ToTarget_TransparentContainer;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
source_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!source_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" Source : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
source_ue->enb_ue_s1ap_id, source_ue->mme_ue_s1ap_id);
|
|
|
|
if (!HandoverType) {
|
|
ogs_error("No HandoverType");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
if (!Cause) {
|
|
ogs_error("No Cause");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
if (!TargetID) {
|
|
ogs_error("No TargetID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
if (!Source_ToTarget_TransparentContainer) {
|
|
ogs_error("No Source_ToTarget_TransparentContainer");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
switch (TargetID->present) {
|
|
case S1AP_TargetID_PR_targeteNB_ID:
|
|
ogs_s1ap_ENB_ID_to_uint32(
|
|
&TargetID->choice.targeteNB_ID->global_ENB_ID.eNB_ID,
|
|
&target_enb_id);
|
|
break;
|
|
default:
|
|
ogs_error("Not implemented(%d)", TargetID->present);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_handover_preparation_failure(source_ue,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
target_enb = mme_enb_find_by_enb_id(target_enb_id);
|
|
if (target_enb == NULL) {
|
|
ogs_error("Handover required : cannot find target eNB-id[0x%x]",
|
|
target_enb_id);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_handover_preparation_failure(source_ue,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_targetID));
|
|
return;
|
|
}
|
|
|
|
mme_ue = source_ue->mme_ue;
|
|
ogs_expect_or_return(mme_ue);
|
|
|
|
if (!SECURITY_CONTEXT_IS_VALID(mme_ue)) {
|
|
ogs_error("No Security Context");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_handover_preparation_failure(source_ue,
|
|
S1AP_Cause_PR_nas, S1AP_CauseNas_authentication_failure));
|
|
return;
|
|
}
|
|
|
|
source_ue->handover_type = *HandoverType;
|
|
|
|
mme_ue->nhcc++;
|
|
ogs_kdf_nh_enb(mme_ue->kasme, mme_ue->nh, mme_ue->nh);
|
|
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_handover_request(
|
|
source_ue, target_enb, HandoverType, Cause,
|
|
Source_ToTarget_TransparentContainer));
|
|
}
|
|
|
|
void s1ap_handle_handover_request_ack(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
int rv;
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_SuccessfulOutcome_t *successfulOutcome = NULL;
|
|
S1AP_HandoverRequestAcknowledge_t *HandoverRequestAcknowledge = NULL;
|
|
|
|
S1AP_HandoverRequestAcknowledgeIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_E_RABAdmittedList_t *E_RABAdmittedList = NULL;
|
|
S1AP_Target_ToSource_TransparentContainer_t
|
|
*Target_ToSource_TransparentContainer = NULL;
|
|
|
|
enb_ue_t *source_ue = NULL;
|
|
enb_ue_t *target_ue = NULL;
|
|
mme_ue_t *mme_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
successfulOutcome = message->choice.successfulOutcome;
|
|
ogs_assert(successfulOutcome);
|
|
HandoverRequestAcknowledge =
|
|
&successfulOutcome->value.choice.HandoverRequestAcknowledge;
|
|
ogs_assert(HandoverRequestAcknowledge);
|
|
|
|
ogs_debug("HandoverRequestAcknowledge");
|
|
for (i = 0; i < HandoverRequestAcknowledge->protocolIEs.list.count; i++) {
|
|
ie = HandoverRequestAcknowledge->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_E_RABAdmittedList:
|
|
E_RABAdmittedList = &ie->value.choice.E_RABAdmittedList;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_Target_ToSource_TransparentContainer:
|
|
Target_ToSource_TransparentContainer =
|
|
&ie->value.choice.Target_ToSource_TransparentContainer;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
target_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!target_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
if (!E_RABAdmittedList) {
|
|
ogs_error("No E_RABAdmittedList");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
if (!Target_ToSource_TransparentContainer) {
|
|
ogs_error("No Target_ToSource_TransparentContainer");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
source_ue = target_ue->source_ue;
|
|
if (!source_ue) {
|
|
ogs_error("No Source UE");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
mme_ue = source_ue->mme_ue;
|
|
ogs_expect_or_return(mme_ue);
|
|
|
|
ogs_debug(" Source : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
source_ue->enb_ue_s1ap_id, source_ue->mme_ue_s1ap_id);
|
|
ogs_debug(" Target : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
target_ue->enb_ue_s1ap_id, target_ue->mme_ue_s1ap_id);
|
|
|
|
target_ue->enb_ue_s1ap_id = *ENB_UE_S1AP_ID;
|
|
|
|
for (i = 0; i < E_RABAdmittedList->list.count; i++) {
|
|
S1AP_E_RABAdmittedItemIEs_t *item = NULL;
|
|
S1AP_E_RABAdmittedItem_t *e_rab = NULL;
|
|
|
|
mme_bearer_t *bearer = NULL;
|
|
|
|
item = (S1AP_E_RABAdmittedItemIEs_t *)E_RABAdmittedList->list.array[i];
|
|
if (!item) {
|
|
ogs_error("No S1AP_E_RABAdmittedItemIEs_t");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
e_rab = &item->value.choice.E_RABAdmittedItem;
|
|
if (!e_rab) {
|
|
ogs_error("No E_RABAdmittedItem");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
bearer = mme_bearer_find_by_ue_ebi(mme_ue, e_rab->e_RAB_ID);
|
|
if (!bearer) {
|
|
ogs_error("No Bearer [%d]", (int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_E_RAB_ID));
|
|
return;
|
|
}
|
|
|
|
memcpy(&bearer->target_s1u_teid, e_rab->gTP_TEID.buf,
|
|
sizeof(bearer->target_s1u_teid));
|
|
bearer->target_s1u_teid = be32toh(bearer->target_s1u_teid);
|
|
rv = ogs_asn_BIT_STRING_to_ip(
|
|
&e_rab->transportLayerAddress, &bearer->target_s1u_ip);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("No transportLayerAddress [%d]",
|
|
(int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol,
|
|
S1AP_CauseProtocol_abstract_syntax_error_falsely_constructed_message));
|
|
return;
|
|
}
|
|
|
|
if (e_rab->dL_transportLayerAddress && e_rab->dL_gTP_TEID) {
|
|
ogs_assert(e_rab->dL_gTP_TEID->buf);
|
|
ogs_assert(e_rab->dL_transportLayerAddress->buf);
|
|
memcpy(&bearer->enb_dl_teid, e_rab->dL_gTP_TEID->buf,
|
|
sizeof(bearer->enb_dl_teid));
|
|
bearer->enb_dl_teid = be32toh(bearer->enb_dl_teid);
|
|
rv = ogs_asn_BIT_STRING_to_ip(
|
|
e_rab->dL_transportLayerAddress, &bearer->enb_dl_ip);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("No dL_transportLayerAddress [%d]",
|
|
(int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol,
|
|
S1AP_CauseProtocol_abstract_syntax_error_falsely_constructed_message));
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (e_rab->uL_TransportLayerAddress && e_rab->uL_GTP_TEID) {
|
|
ogs_assert(e_rab->uL_GTP_TEID->buf);
|
|
ogs_assert(e_rab->uL_TransportLayerAddress->buf);
|
|
memcpy(&bearer->enb_ul_teid, e_rab->uL_GTP_TEID->buf,
|
|
sizeof(bearer->enb_ul_teid));
|
|
bearer->enb_ul_teid = be32toh(bearer->enb_ul_teid);
|
|
rv = ogs_asn_BIT_STRING_to_ip(
|
|
e_rab->uL_TransportLayerAddress, &bearer->enb_ul_ip);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("No uL_transportLayerAddress [%d]",
|
|
(int)e_rab->e_RAB_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication2(mme_ue,
|
|
S1AP_Cause_PR_protocol,
|
|
S1AP_CauseProtocol_abstract_syntax_error_falsely_constructed_message));
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
OGS_ASN_STORE_DATA(&mme_ue->container,
|
|
Target_ToSource_TransparentContainer);
|
|
|
|
if (mme_ue_have_indirect_tunnel(mme_ue) == true) {
|
|
ogs_assert(OGS_OK ==
|
|
mme_gtp_send_create_indirect_data_forwarding_tunnel_request(mme_ue)\
|
|
);
|
|
} else {
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_handover_command(source_ue));
|
|
}
|
|
}
|
|
|
|
void s1ap_handle_handover_failure(mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_UnsuccessfulOutcome_t *unsuccessfulOutcome = NULL;
|
|
S1AP_HandoverFailure_t *HandoverFailure = NULL;
|
|
|
|
S1AP_HandoverFailureIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_Cause_t *Cause = NULL;
|
|
|
|
enb_ue_t *target_ue = NULL;
|
|
enb_ue_t *source_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
unsuccessfulOutcome = message->choice.unsuccessfulOutcome;
|
|
ogs_assert(unsuccessfulOutcome);
|
|
HandoverFailure = &unsuccessfulOutcome->value.choice.HandoverFailure;
|
|
ogs_assert(HandoverFailure);
|
|
|
|
ogs_debug("HandoverFailure");
|
|
for (i = 0; i < HandoverFailure->protocolIEs.list.count; i++) {
|
|
ie = HandoverFailure->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_Cause:
|
|
Cause = &ie->value.choice.Cause;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, NULL,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
target_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!target_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!Cause) {
|
|
ogs_error("No Cause");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
source_ue = target_ue->source_ue;
|
|
if (!source_ue) {
|
|
ogs_error("No Source UE");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" Source : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
source_ue->enb_ue_s1ap_id, source_ue->mme_ue_s1ap_id);
|
|
ogs_debug(" Target : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
target_ue->enb_ue_s1ap_id, target_ue->mme_ue_s1ap_id);
|
|
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_handover_preparation_failure(
|
|
source_ue, Cause->present, Cause->choice.radioNetwork));
|
|
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_ue_context_release_command(
|
|
target_ue, S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_ho_failure_in_target_EPC_eNB_or_target_system,
|
|
S1AP_UE_CTX_REL_S1_HANDOVER_FAILURE, 0));
|
|
}
|
|
|
|
void s1ap_handle_handover_cancel(mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_InitiatingMessage_t *initiatingMessage = NULL;
|
|
S1AP_HandoverCancel_t *HandoverCancel = NULL;
|
|
|
|
S1AP_HandoverCancelIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_Cause_t *Cause = NULL;
|
|
|
|
enb_ue_t *source_ue = NULL;
|
|
enb_ue_t *target_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
initiatingMessage = message->choice.initiatingMessage;
|
|
ogs_assert(initiatingMessage);
|
|
HandoverCancel = &initiatingMessage->value.choice.HandoverCancel;
|
|
ogs_assert(HandoverCancel);
|
|
|
|
ogs_debug("HandoverCancel");
|
|
for (i = 0; i < HandoverCancel->protocolIEs.list.count; i++) {
|
|
ie = HandoverCancel->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_Cause:
|
|
Cause = &ie->value.choice.Cause;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
source_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!source_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
if (!Cause) {
|
|
ogs_error("No Cause");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
target_ue = source_ue->target_ue;
|
|
if (!target_ue) {
|
|
ogs_error("No Target UE");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" Source : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
source_ue->enb_ue_s1ap_id, source_ue->mme_ue_s1ap_id);
|
|
ogs_debug(" Target : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
target_ue->enb_ue_s1ap_id, target_ue->mme_ue_s1ap_id);
|
|
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_ue_context_release_command(
|
|
target_ue, S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_handover_cancelled,
|
|
S1AP_UE_CTX_REL_S1_HANDOVER_CANCEL, 0));
|
|
|
|
ogs_debug("Handover Cancel : UE[eNB-UE-S1AP-ID(%d)] --> eNB[%s:%d]",
|
|
source_ue->enb_ue_s1ap_id,
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
}
|
|
|
|
void s1ap_handle_enb_status_transfer(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_InitiatingMessage_t *initiatingMessage = NULL;
|
|
S1AP_ENBStatusTransfer_t *ENBStatusTransfer = NULL;
|
|
|
|
S1AP_ENBStatusTransferIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_StatusTransfer_TransparentContainer_t
|
|
*ENB_StatusTransfer_TransparentContainer = NULL;
|
|
|
|
enb_ue_t *source_ue = NULL, *target_ue = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
initiatingMessage = message->choice.initiatingMessage;
|
|
ogs_assert(initiatingMessage);
|
|
ENBStatusTransfer = &initiatingMessage->value.choice.ENBStatusTransfer;
|
|
ogs_assert(ENBStatusTransfer);
|
|
|
|
ogs_debug("ENBStatusTransfer");
|
|
for (i = 0; i < ENBStatusTransfer->protocolIEs.list.count; i++) {
|
|
ie = ENBStatusTransfer->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_StatusTransfer_TransparentContainer:
|
|
ENB_StatusTransfer_TransparentContainer =
|
|
&ie->value.choice.ENB_StatusTransfer_TransparentContainer;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
source_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!source_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_StatusTransfer_TransparentContainer) {
|
|
ogs_error("No ENB_StatusTransfer_TransparentContainer");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
target_ue = source_ue->target_ue;
|
|
if (!target_ue) {
|
|
ogs_error("No Target UE");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_debug(" Source : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
source_ue->enb_ue_s1ap_id, source_ue->mme_ue_s1ap_id);
|
|
ogs_debug(" Target : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
target_ue->enb_ue_s1ap_id, target_ue->mme_ue_s1ap_id);
|
|
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_mme_status_transfer(target_ue,
|
|
ENB_StatusTransfer_TransparentContainer));
|
|
}
|
|
|
|
void s1ap_handle_handover_notification(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_InitiatingMessage_t *initiatingMessage = NULL;
|
|
S1AP_HandoverNotify_t *HandoverNotify = NULL;
|
|
|
|
S1AP_HandoverNotifyIEs_t *ie = NULL;
|
|
S1AP_MME_UE_S1AP_ID_t *MME_UE_S1AP_ID = NULL;
|
|
S1AP_ENB_UE_S1AP_ID_t *ENB_UE_S1AP_ID = NULL;
|
|
S1AP_EUTRAN_CGI_t *EUTRAN_CGI = NULL;
|
|
S1AP_TAI_t *TAI = NULL;
|
|
|
|
S1AP_PLMNidentity_t *pLMNidentity = NULL;
|
|
S1AP_CellIdentity_t *cell_ID = NULL;
|
|
S1AP_TAC_t *tAC = NULL;
|
|
|
|
enb_ue_t *source_ue = NULL;
|
|
enb_ue_t *target_ue = NULL;
|
|
mme_ue_t *mme_ue = NULL;
|
|
mme_sess_t *sess = NULL;
|
|
mme_bearer_t *bearer = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
initiatingMessage = message->choice.initiatingMessage;
|
|
ogs_assert(initiatingMessage);
|
|
HandoverNotify = &initiatingMessage->value.choice.HandoverNotify;
|
|
ogs_assert(HandoverNotify);
|
|
|
|
ogs_debug("HandoverNotify");
|
|
for (i = 0; i < HandoverNotify->protocolIEs.list.count; i++) {
|
|
ie = HandoverNotify->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID:
|
|
MME_UE_S1AP_ID = &ie->value.choice.MME_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID:
|
|
ENB_UE_S1AP_ID = &ie->value.choice.ENB_UE_S1AP_ID;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_EUTRAN_CGI:
|
|
EUTRAN_CGI = &ie->value.choice.EUTRAN_CGI;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_TAI:
|
|
TAI = &ie->value.choice.TAI;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!MME_UE_S1AP_ID) {
|
|
ogs_error("No MME_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
target_ue = enb_ue_find_by_mme_ue_s1ap_id(*MME_UE_S1AP_ID);
|
|
if (!target_ue) {
|
|
ogs_error("No eNB UE Context : MME_UE_S1AP_ID[%lld]",
|
|
(long long)*MME_UE_S1AP_ID);
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, NULL,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_unknown_mme_ue_s1ap_id));
|
|
return;
|
|
}
|
|
|
|
if (!ENB_UE_S1AP_ID) {
|
|
ogs_error("No ENB_UE_S1AP_ID");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
if (!EUTRAN_CGI) {
|
|
ogs_error("No EUTRAN_CGI");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
pLMNidentity = &EUTRAN_CGI->pLMNidentity;
|
|
ogs_assert(pLMNidentity && pLMNidentity->size == sizeof(ogs_plmn_id_t));
|
|
cell_ID = &EUTRAN_CGI->cell_ID;
|
|
ogs_assert(cell_ID);
|
|
|
|
if (!TAI) {
|
|
ogs_error("No TAI");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
pLMNidentity = &TAI->pLMNidentity;
|
|
ogs_assert(pLMNidentity && pLMNidentity->size == sizeof(ogs_plmn_id_t));
|
|
tAC = &TAI->tAC;
|
|
ogs_assert(tAC && tAC->size == sizeof(uint16_t));
|
|
|
|
source_ue = target_ue->source_ue;
|
|
if (!source_ue) {
|
|
ogs_error("No Source UE");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, MME_UE_S1AP_ID, ENB_UE_S1AP_ID,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
mme_ue = source_ue->mme_ue;
|
|
ogs_expect_or_return(mme_ue);
|
|
|
|
ogs_debug(" Source : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
source_ue->enb_ue_s1ap_id, source_ue->mme_ue_s1ap_id);
|
|
ogs_debug(" Target : ENB_UE_S1AP_ID[%d] MME_UE_S1AP_ID[%d]",
|
|
target_ue->enb_ue_s1ap_id, target_ue->mme_ue_s1ap_id);
|
|
|
|
enb_ue_associate_mme_ue(target_ue, mme_ue);
|
|
|
|
memcpy(&target_ue->saved.tai.plmn_id, pLMNidentity->buf,
|
|
sizeof(target_ue->saved.tai.plmn_id));
|
|
memcpy(&target_ue->saved.tai.tac,
|
|
tAC->buf, sizeof(target_ue->saved.tai.tac));
|
|
target_ue->saved.tai.tac = be16toh(target_ue->saved.tai.tac);
|
|
|
|
memcpy(&target_ue->saved.e_cgi.plmn_id, pLMNidentity->buf,
|
|
sizeof(target_ue->saved.e_cgi.plmn_id));
|
|
memcpy(&target_ue->saved.e_cgi.cell_id, cell_ID->buf,
|
|
sizeof(target_ue->saved.e_cgi.cell_id));
|
|
target_ue->saved.e_cgi.cell_id =
|
|
(be32toh(target_ue->saved.e_cgi.cell_id) >> 4);
|
|
|
|
ogs_debug(" OLD TAI[PLMN_ID:%06x,TAC:%d]",
|
|
ogs_plmn_id_hexdump(&mme_ue->tai.plmn_id),
|
|
mme_ue->tai.tac);
|
|
ogs_debug(" OLD E_CGI[PLMN_ID:%06x,CELL_ID:0x%x]",
|
|
ogs_plmn_id_hexdump(&mme_ue->e_cgi.plmn_id),
|
|
mme_ue->e_cgi.cell_id);
|
|
ogs_debug(" TAI[PLMN_ID:%06x,TAC:%d]",
|
|
ogs_plmn_id_hexdump(&target_ue->saved.tai.plmn_id),
|
|
target_ue->saved.tai.tac);
|
|
ogs_debug(" E_CGI[PLMN_ID:%06x,CELL_ID:0x%x]",
|
|
ogs_plmn_id_hexdump(&target_ue->saved.e_cgi.plmn_id),
|
|
target_ue->saved.e_cgi.cell_id);
|
|
|
|
/* Copy Stream-No/TAI/ECGI from enb_ue */
|
|
mme_ue->enb_ostream_id = target_ue->enb_ostream_id;
|
|
memcpy(&mme_ue->tai, &target_ue->saved.tai, sizeof(ogs_eps_tai_t));
|
|
memcpy(&mme_ue->e_cgi, &target_ue->saved.e_cgi, sizeof(ogs_e_cgi_t));
|
|
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_ue_context_release_command(source_ue,
|
|
S1AP_Cause_PR_radioNetwork,
|
|
S1AP_CauseRadioNetwork_successful_handover,
|
|
S1AP_UE_CTX_REL_S1_HANDOVER_COMPLETE,
|
|
ogs_app()->time.handover.duration));
|
|
|
|
ogs_list_init(&mme_ue->bearer_to_modify_list);
|
|
|
|
ogs_list_for_each(&mme_ue->sess_list, sess) {
|
|
ogs_list_for_each(&sess->bearer_list, bearer) {
|
|
bearer->enb_s1u_teid = bearer->target_s1u_teid;
|
|
memcpy(&bearer->enb_s1u_ip, &bearer->target_s1u_ip,
|
|
sizeof(ogs_ip_t));
|
|
|
|
ogs_list_add(
|
|
&mme_ue->bearer_to_modify_list, &bearer->to_modify_node);
|
|
|
|
}
|
|
}
|
|
|
|
if (ogs_list_count(&mme_ue->bearer_to_modify_list)) {
|
|
ogs_assert(OGS_OK == mme_gtp_send_modify_bearer_request(mme_ue, 1, 0));
|
|
}
|
|
}
|
|
|
|
void s1ap_handle_s1_reset(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int i;
|
|
|
|
S1AP_InitiatingMessage_t *initiatingMessage = NULL;
|
|
S1AP_Reset_t *Reset = NULL;
|
|
|
|
S1AP_ResetIEs_t *ie = NULL;
|
|
S1AP_Cause_t *Cause = NULL;
|
|
S1AP_ResetType_t *ResetType = NULL;
|
|
S1AP_UE_associatedLogicalS1_ConnectionListRes_t *partOfS1_Interface = NULL;
|
|
|
|
enb_ue_t *iter = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
initiatingMessage = message->choice.initiatingMessage;
|
|
ogs_assert(initiatingMessage);
|
|
Reset = &initiatingMessage->value.choice.Reset;
|
|
ogs_assert(Reset);
|
|
|
|
ogs_warn("Reset");
|
|
|
|
for (i = 0; i < Reset->protocolIEs.list.count; i++) {
|
|
ie = Reset->protocolIEs.list.array[i];
|
|
switch (ie->id) {
|
|
case S1AP_ProtocolIE_ID_id_Cause:
|
|
Cause = &ie->value.choice.Cause;
|
|
break;
|
|
case S1AP_ProtocolIE_ID_id_ResetType:
|
|
ResetType = &ie->value.choice.ResetType;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
if (!Cause) {
|
|
ogs_error("No Cause");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, NULL,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
ogs_warn(" Cause[Group:%d Cause:%d]",
|
|
Cause->present, (int)Cause->choice.radioNetwork);
|
|
|
|
if (!ResetType) {
|
|
ogs_error("No ResetType");
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_error_indication(enb, NULL, NULL,
|
|
S1AP_Cause_PR_protocol, S1AP_CauseProtocol_semantic_error));
|
|
return;
|
|
}
|
|
|
|
switch (ResetType->present) {
|
|
case S1AP_ResetType_PR_s1_Interface:
|
|
ogs_warn(" S1AP_ResetType_PR_s1_Interface");
|
|
|
|
mme_gtp_send_release_all_ue_in_enb(
|
|
enb, OGS_GTP_RELEASE_S1_CONTEXT_REMOVE_BY_RESET_ALL);
|
|
|
|
/*
|
|
* TS36.413
|
|
* 8.7.1.2.1 Reset Procedure Initiated from the MME
|
|
*
|
|
* The eNB does not need to wait for the release of radio resources
|
|
* to be completed before returning the RESET ACKNOWLEDGE message.
|
|
*
|
|
* 8.7.1.2.2 Reset Procedure Initiated from the E-UTRAN
|
|
* After the MME has released all assigned S1 resources and
|
|
* the UE S1AP IDs for all indicated UE associations which can be used
|
|
* for new UE-associated logical S1-connections over the S1 interface,
|
|
* the MME shall respond with the RESET ACKNOWLEDGE message.
|
|
*/
|
|
if (ogs_list_count(&enb->enb_ue_list) == 0)
|
|
ogs_assert(OGS_OK ==
|
|
s1ap_send_s1_reset_ack(enb, NULL));
|
|
|
|
break;
|
|
|
|
case S1AP_ResetType_PR_partOfS1_Interface:
|
|
ogs_warn(" S1AP_ResetType_PR_partOfS1_Interface");
|
|
|
|
partOfS1_Interface = ResetType->choice.partOfS1_Interface;
|
|
ogs_assert(partOfS1_Interface);
|
|
|
|
if (enb->s1_reset_ack)
|
|
ogs_pkbuf_free(enb->s1_reset_ack);
|
|
|
|
enb->s1_reset_ack = ogs_s1ap_build_s1_reset_ack(partOfS1_Interface);
|
|
ogs_expect_or_return(enb->s1_reset_ack);
|
|
|
|
for (i = 0; i < partOfS1_Interface->list.count; i++) {
|
|
S1AP_UE_associatedLogicalS1_ConnectionItemRes_t *ie2 = NULL;
|
|
S1AP_UE_associatedLogicalS1_ConnectionItem_t *item = NULL;
|
|
|
|
enb_ue_t *enb_ue = NULL;
|
|
mme_ue_t *mme_ue = NULL;
|
|
|
|
ie2 = (S1AP_UE_associatedLogicalS1_ConnectionItemRes_t *)
|
|
partOfS1_Interface->list.array[i];
|
|
if (!ie2) {
|
|
ogs_error("No S1AP_UE_associatedLogicalS1_ConnectionItemRes_t");
|
|
continue;
|
|
}
|
|
|
|
item = &ie2->value.choice.UE_associatedLogicalS1_ConnectionItem;
|
|
if (!item) {
|
|
ogs_error("No UE_associatedLogicalS1_ConnectionItem");
|
|
continue;
|
|
}
|
|
|
|
ogs_warn(" MME_UE_S1AP_ID[%d] ENB_UE_S1AP_ID[%d]",
|
|
item->mME_UE_S1AP_ID ? (int)*item->mME_UE_S1AP_ID : -1,
|
|
item->eNB_UE_S1AP_ID ? (int)*item->eNB_UE_S1AP_ID : -1);
|
|
|
|
if (item->mME_UE_S1AP_ID)
|
|
enb_ue = enb_ue_find_by_mme_ue_s1ap_id( *item->mME_UE_S1AP_ID);
|
|
else if (item->eNB_UE_S1AP_ID)
|
|
enb_ue = enb_ue_find_by_enb_ue_s1ap_id(enb,
|
|
*item->eNB_UE_S1AP_ID);
|
|
|
|
if (enb_ue == NULL) {
|
|
ogs_error("Cannot find S1 Context "
|
|
"(MME_UE_S1AP_ID[%d] ENB_UE_S1AP_ID[%d])",
|
|
item->mME_UE_S1AP_ID ? (int)*item->mME_UE_S1AP_ID : -1,
|
|
item->eNB_UE_S1AP_ID ? (int)*item->eNB_UE_S1AP_ID : -1);
|
|
continue;
|
|
}
|
|
|
|
/* ENB_UE Context where PartOfS1_interface was requested */
|
|
enb_ue->part_of_s1_reset_requested = true;
|
|
|
|
mme_ue = enb_ue->mme_ue;
|
|
if (mme_ue) {
|
|
ogs_assert(OGS_OK ==
|
|
mme_gtp_send_release_access_bearers_request(mme_ue,
|
|
OGS_GTP_RELEASE_S1_CONTEXT_REMOVE_BY_RESET_PARTIAL));
|
|
} else {
|
|
enb_ue_remove(enb_ue);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* TS36.413
|
|
* 8.7.1.2.1 Reset Procedure Initiated from the MME
|
|
*
|
|
* The eNB does not need to wait for the release of radio resources
|
|
* to be completed before returning the RESET ACKNOWLEDGE message.
|
|
*
|
|
* 8.7.1.2.2 Reset Procedure Initiated from the E-UTRAN
|
|
* After the MME has released all assigned S1 resources and
|
|
* the UE S1AP IDs for all indicated UE associations which can be used
|
|
* for new UE-associated logical S1-connections over the S1 interface,
|
|
* the MME shall respond with the RESET ACKNOWLEDGE message.
|
|
*/
|
|
ogs_list_for_each(&enb->enb_ue_list, iter) {
|
|
if (iter->part_of_s1_reset_requested == true) {
|
|
/* The ENB_UE context
|
|
* where PartOfS1_interface was requested
|
|
* still remains */
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* All ENB_UE context
|
|
* where PartOfS1_interface was requested
|
|
* REMOVED */
|
|
ogs_assert(enb->s1_reset_ack);
|
|
s1ap_send_to_enb(enb, enb->s1_reset_ack, S1AP_NON_UE_SIGNALLING);
|
|
|
|
/* Clear S1-Reset Ack Buffer */
|
|
enb->s1_reset_ack = NULL;
|
|
break;
|
|
default:
|
|
ogs_warn("Invalid ResetType[%d]", ResetType->present);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void s1ap_handle_write_replace_warning_response(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
|
|
S1AP_SuccessfulOutcome_t *successfulOutcome = NULL;
|
|
S1AP_WriteReplaceWarningResponse_t *WriteReplaceWarningResponse = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
successfulOutcome = message->choice.successfulOutcome;
|
|
ogs_assert(successfulOutcome);
|
|
WriteReplaceWarningResponse =
|
|
&successfulOutcome->value.choice.WriteReplaceWarningResponse;
|
|
ogs_assert(WriteReplaceWarningResponse);
|
|
|
|
ogs_debug("WriteReplaceWarningResponse");
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
|
|
}
|
|
|
|
void s1ap_handle_kill_response(
|
|
mme_enb_t *enb, ogs_s1ap_message_t *message)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
|
|
S1AP_SuccessfulOutcome_t *successfulOutcome = NULL;
|
|
S1AP_KillResponse_t *KillResponse = NULL;
|
|
|
|
ogs_assert(enb);
|
|
ogs_assert(enb->sctp.sock);
|
|
|
|
ogs_assert(message);
|
|
successfulOutcome = message->choice.successfulOutcome;
|
|
ogs_assert(successfulOutcome);
|
|
KillResponse =
|
|
&successfulOutcome->value.choice.KillResponse;
|
|
ogs_assert(KillResponse);
|
|
|
|
ogs_debug("KillResponse");
|
|
|
|
ogs_debug(" IP[%s] ENB_ID[%d]",
|
|
OGS_ADDR(enb->sctp.addr, buf), enb->enb_id);
|
|
}
|