2019-06-19 09:04:57 +00:00
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/*
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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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2019-06-11 13:10:47 +00:00
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#include "mme-event.h"
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#include "mme-sm.h"
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#include "mme-context.h"
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2017-08-09 15:41:09 +00:00
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2019-06-01 09:52:38 +00:00
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#include "s1ap-path.h"
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2019-06-11 13:10:47 +00:00
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#include "mme-gtp-path.h"
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#include "nas-path.h"
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#include "mme-fd-path.h"
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2019-06-20 09:20:32 +00:00
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#include "sgsap-path.h"
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2019-11-15 14:56:55 +00:00
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#include "mme-path.h"
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2017-08-10 08:02:07 +00:00
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2019-06-11 13:10:47 +00:00
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#include "mme-s11-build.h"
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#include "mme-s11-handler.h"
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2017-09-10 14:03:24 +00:00
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2020-03-25 21:43:02 +00:00
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void mme_s11_handle_echo_request(
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ogs_gtp_xact_t *xact, ogs_gtp_echo_request_t *req)
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{
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ogs_assert(xact);
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ogs_assert(req);
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ogs_debug("[MME] Receiving Echo Request");
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/* FIXME : Before implementing recovery counter correctly,
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* I'll re-use the recovery value in request message */
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ogs_gtp_send_echo_response(xact, req->recovery.u8, 0);
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}
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void mme_s11_handle_echo_response(
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ogs_gtp_xact_t *xact, ogs_gtp_echo_response_t *rsp)
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{
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/* Not Implemented */
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}
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2017-09-10 14:03:24 +00:00
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void mme_s11_handle_create_session_response(
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2019-09-13 12:07:47 +00:00
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ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
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ogs_gtp_create_session_response_t *rsp)
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2017-04-12 12:44:18 +00:00
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{
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2019-04-27 14:54:30 +00:00
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int rv;
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2019-11-15 14:56:55 +00:00
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uint8_t cause_value = 0;
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2019-09-13 12:07:47 +00:00
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ogs_gtp_f_teid_t *sgw_s11_teid = NULL;
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ogs_gtp_f_teid_t *sgw_s1u_teid = NULL;
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2017-04-12 12:44:18 +00:00
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2017-09-10 14:03:24 +00:00
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mme_bearer_t *bearer = NULL;
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2017-09-01 12:35:45 +00:00
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mme_sess_t *sess = NULL;
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2019-09-13 12:07:47 +00:00
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ogs_pdn_t *pdn = NULL;
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2020-06-04 19:12:32 +00:00
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ogs_gtp_bearer_qos_t bearer_qos;
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ogs_gtp_ambr_t *ambr = NULL;
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uint16_t decoded = 0;
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2017-04-12 12:44:18 +00:00
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2019-04-27 14:54:30 +00:00
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ogs_assert(xact);
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ogs_assert(rsp);
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2017-04-12 12:44:18 +00:00
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2019-04-27 14:54:30 +00:00
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ogs_debug("[MME] Create Session Response");
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2018-01-22 15:00:57 +00:00
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2019-11-15 14:56:55 +00:00
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if (!mme_ue) {
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ogs_warn("No Context in TEID");
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mme_ue = xact->data;
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ogs_assert(mme_ue);
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}
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2019-11-11 14:09:35 +00:00
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rv = ogs_gtp_xact_commit(xact);
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2019-11-30 07:45:09 +00:00
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ogs_expect_or_return(rv == OGS_OK);
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2019-11-11 14:09:35 +00:00
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2019-11-15 14:56:55 +00:00
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if (rsp->cause.presence) {
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ogs_gtp_cause_t *cause = rsp->cause.data;
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ogs_assert(cause);
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cause_value = cause->value;
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if (cause_value == OGS_GTP_CAUSE_REQUEST_ACCEPTED) {
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if (rsp->bearer_contexts_created.cause.presence) {
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cause = rsp->bearer_contexts_created.cause.data;
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ogs_assert(cause);
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cause_value = cause->value;
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} else {
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ogs_error("No Cause");
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cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
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}
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}
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} else {
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ogs_error("No Cause");
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cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
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}
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2020-10-21 00:00:02 +00:00
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if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED)
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ogs_warn("Cause[%d] : No Accepted", cause_value);
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2020-09-11 01:50:20 +00:00
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2020-10-21 00:00:02 +00:00
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if (rsp->pdn_address_allocation.presence == 0) {
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2020-09-11 01:50:20 +00:00
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ogs_error("No PDN Address Allocation");
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cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
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}
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2019-06-19 09:04:57 +00:00
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if (rsp->sender_f_teid_for_control_plane.presence == 0) {
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2019-04-27 14:54:30 +00:00
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ogs_error("No S11 TEID");
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2019-11-15 14:56:55 +00:00
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cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
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2017-04-12 12:44:18 +00:00
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}
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2019-06-19 09:04:57 +00:00
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if (rsp->bearer_contexts_created.s1_u_enodeb_f_teid.presence == 0) {
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2019-04-27 14:54:30 +00:00
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ogs_error("No S1U TEID");
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2019-11-15 14:56:55 +00:00
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cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
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2017-04-12 12:44:18 +00:00
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}
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2019-06-19 09:04:57 +00:00
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if (rsp->bearer_contexts_created.presence == 0) {
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2019-04-27 14:54:30 +00:00
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ogs_error("No Bearer");
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2019-11-15 14:56:55 +00:00
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cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
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2017-09-10 14:03:24 +00:00
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}
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2019-11-15 14:56:55 +00:00
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if (rsp->bearer_contexts_created.eps_bearer_id.presence == 0) {
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2019-04-27 14:54:30 +00:00
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ogs_error("No EPS Bearer ID");
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2019-11-15 14:56:55 +00:00
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cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
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}
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if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED) {
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2020-04-18 01:36:26 +00:00
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if (OGS_FSM_CHECK(&mme_ue->sm, emm_state_initial_context_setup)) {
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2020-09-11 01:50:20 +00:00
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ogs_error("[%s] Attach reject", mme_ue->imsi_bcd);
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2020-05-23 02:24:48 +00:00
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nas_eps_send_attach_reject(mme_ue,
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2020-04-18 01:36:26 +00:00
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EMM_CAUSE_NETWORK_FAILURE, ESM_CAUSE_NETWORK_FAILURE);
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}
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2019-11-15 14:56:55 +00:00
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mme_send_delete_session_or_mme_ue_context_release(mme_ue);
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2017-09-10 14:03:24 +00:00
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return;
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}
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2017-04-12 12:44:18 +00:00
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2017-09-10 14:03:24 +00:00
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bearer = mme_bearer_find_by_ue_ebi(mme_ue,
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rsp->bearer_contexts_created.eps_bearer_id.u8);
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2019-11-29 06:31:22 +00:00
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ogs_expect_or_return(bearer);
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2017-09-02 01:14:40 +00:00
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sess = bearer->sess;
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2019-04-27 14:54:30 +00:00
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ogs_assert(sess);
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2017-09-02 01:14:40 +00:00
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pdn = sess->pdn;
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2019-04-27 14:54:30 +00:00
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ogs_assert(pdn);
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2017-09-02 01:14:40 +00:00
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2017-09-04 13:00:51 +00:00
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/* Control Plane(UL) : SGW-S11 */
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2017-04-12 12:44:18 +00:00
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sgw_s11_teid = rsp->sender_f_teid_for_control_plane.data;
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2020-10-01 17:27:58 +00:00
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mme_ue->sgw_s11_teid = be32toh(sgw_s11_teid->teid);
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2017-04-12 12:44:18 +00:00
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2017-04-13 03:21:47 +00:00
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memcpy(&pdn->paa, rsp->pdn_address_allocation.data,
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rsp->pdn_address_allocation.len);
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2017-09-04 13:00:51 +00:00
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/* PCO */
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2019-06-19 09:04:57 +00:00
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if (rsp->protocol_configuration_options.presence) {
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2019-09-13 12:07:47 +00:00
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OGS_TLV_STORE_DATA(&sess->pgw_pco,
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&rsp->protocol_configuration_options);
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2017-04-13 03:21:47 +00:00
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}
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2020-06-04 19:12:32 +00:00
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/* Bearer QoS */
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if (rsp->bearer_contexts_created.bearer_level_qos.presence) {
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decoded = ogs_gtp_parse_bearer_qos(&bearer_qos,
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&rsp->bearer_contexts_created.bearer_level_qos);
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ogs_assert(rsp->bearer_contexts_created.bearer_level_qos.len ==
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decoded);
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pdn->qos.qci = bearer_qos.qci;
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pdn->qos.arp.priority_level = bearer_qos.priority_level;
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pdn->qos.arp.pre_emption_capability =
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bearer_qos.pre_emption_capability;
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pdn->qos.arp.pre_emption_vulnerability =
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bearer_qos.pre_emption_vulnerability;
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}
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/* AMBR */
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if (rsp->aggregate_maximum_bit_rate.presence) {
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ambr = rsp->aggregate_maximum_bit_rate.data;
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pdn->ambr.downlink = be32toh(ambr->downlink) * 1000;
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pdn->ambr.uplink = be32toh(ambr->uplink) * 1000;
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}
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2017-09-04 13:00:51 +00:00
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/* Data Plane(UL) : SGW-S1U */
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2017-04-12 12:44:18 +00:00
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sgw_s1u_teid = rsp->bearer_contexts_created.s1_u_enodeb_f_teid.data;
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2020-10-01 17:27:58 +00:00
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bearer->sgw_s1u_teid = be32toh(sgw_s1u_teid->teid);
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2018-02-01 05:07:01 +00:00
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2019-04-27 14:54:30 +00:00
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ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
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2018-02-01 05:07:01 +00:00
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mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
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2019-04-27 14:54:30 +00:00
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ogs_debug(" ENB_S1U_TEID[%d] SGW_S1U_TEID[%d]",
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2018-02-01 05:07:01 +00:00
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bearer->enb_s1u_teid, bearer->sgw_s1u_teid);
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2019-09-13 12:07:47 +00:00
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rv = ogs_gtp_f_teid_to_ip(sgw_s1u_teid, &bearer->sgw_s1u_ip);
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2019-04-27 14:54:30 +00:00
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ogs_assert(rv == OGS_OK);
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2017-04-12 13:27:32 +00:00
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2020-09-10 18:04:26 +00:00
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if (SESSION_CONTEXT_IN_ATTACH(sess)) {
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2019-07-21 11:25:29 +00:00
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mme_csmap_t *csmap = mme_csmap_find_by_tai(&mme_ue->tai);
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mme_ue->csmap = csmap;
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2019-06-22 02:16:22 +00:00
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2019-07-21 11:25:29 +00:00
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if (csmap) {
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2019-06-20 09:20:32 +00:00
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sgsap_send_location_update_request(mme_ue);
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2019-07-20 13:30:53 +00:00
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} else {
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2020-05-23 02:24:48 +00:00
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nas_eps_send_attach_accept(mme_ue);
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2019-07-20 13:30:53 +00:00
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}
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2019-06-22 02:16:22 +00:00
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2020-09-10 18:04:26 +00:00
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} else {
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2020-05-23 02:24:48 +00:00
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nas_eps_send_activate_default_bearer_context_request(bearer);
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2020-09-10 18:04:26 +00:00
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}
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2017-04-12 12:44:18 +00:00
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}
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2017-04-13 16:26:50 +00:00
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2017-09-04 13:00:51 +00:00
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void mme_s11_handle_modify_bearer_response(
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2019-09-13 12:07:47 +00:00
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ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
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ogs_gtp_modify_bearer_response_t *rsp)
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2017-09-04 13:00:51 +00:00
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{
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2019-04-27 14:54:30 +00:00
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int rv;
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2019-11-15 14:56:55 +00:00
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uint8_t cause_value = 0;
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2017-09-18 10:30:03 +00:00
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enb_ue_t *source_ue = NULL, *target_ue = NULL;
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2017-09-04 13:00:51 +00:00
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2019-04-27 14:54:30 +00:00
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ogs_assert(xact);
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ogs_assert(rsp);
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2017-09-04 13:00:51 +00:00
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2019-04-27 14:54:30 +00:00
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ogs_debug("[MME] Modify Bearer Response");
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2017-09-04 13:00:51 +00:00
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2019-11-15 14:56:55 +00:00
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if (!mme_ue) {
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ogs_warn("No Context in TEID");
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mme_ue = xact->data;
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ogs_assert(mme_ue);
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}
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2019-09-13 12:07:47 +00:00
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rv = ogs_gtp_xact_commit(xact);
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2019-11-30 07:45:09 +00:00
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ogs_expect_or_return(rv == OGS_OK);
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2017-09-11 15:49:15 +00:00
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2019-11-15 14:56:55 +00:00
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if (rsp->cause.presence) {
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ogs_gtp_cause_t *cause = rsp->cause.data;
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ogs_assert(cause);
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2019-11-11 14:09:35 +00:00
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2019-11-15 14:56:55 +00:00
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cause_value = cause->value;
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if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED)
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ogs_warn("GTP Failed [CAUSE:%d]", cause_value);
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2019-11-11 14:09:35 +00:00
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}
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ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
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mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
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2019-11-15 14:56:55 +00:00
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if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED) {
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mme_send_delete_session_or_mme_ue_context_release(mme_ue);
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return;
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}
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2017-09-13 02:18:17 +00:00
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GTP_COUNTER_CHECK(mme_ue, GTP_COUNTER_MODIFY_BEARER_BY_PATH_SWITCH,
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2019-11-30 07:45:09 +00:00
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s1ap_send_path_switch_ack(mme_ue);
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2017-09-13 02:18:17 +00:00
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);
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2017-09-14 02:12:02 +00:00
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GTP_COUNTER_CHECK(mme_ue, GTP_COUNTER_MODIFY_BEARER_BY_HANDOVER_NOTIFY,
|
2017-09-18 10:30:03 +00:00
|
|
|
target_ue = mme_ue->enb_ue;
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(target_ue);
|
2017-09-18 10:30:03 +00:00
|
|
|
source_ue = target_ue->source_ue;
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(source_ue);
|
2017-09-18 10:30:03 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
s1ap_send_ue_context_release_command(source_ue,
|
2018-03-05 14:01:07 +00:00
|
|
|
S1AP_Cause_PR_radioNetwork,
|
|
|
|
S1AP_CauseRadioNetwork_successful_handover,
|
2019-04-27 14:54:30 +00:00
|
|
|
S1AP_UE_CTX_REL_DELETE_INDIRECT_TUNNEL,
|
|
|
|
ogs_time_from_msec(300));
|
2017-09-14 02:12:02 +00:00
|
|
|
);
|
2017-09-04 13:00:51 +00:00
|
|
|
}
|
|
|
|
|
2017-09-10 14:03:24 +00:00
|
|
|
void mme_s11_handle_delete_session_response(
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
|
|
|
|
ogs_gtp_delete_session_response_t *rsp)
|
2017-09-10 14:03:24 +00:00
|
|
|
{
|
2019-04-27 14:54:30 +00:00
|
|
|
int rv;
|
2019-11-15 14:56:55 +00:00
|
|
|
uint8_t cause_value = 0;
|
2020-10-22 21:53:13 +00:00
|
|
|
int action = 0;
|
2017-09-10 14:03:24 +00:00
|
|
|
mme_sess_t *sess = NULL;
|
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(xact);
|
|
|
|
ogs_assert(rsp);
|
2020-10-22 21:53:13 +00:00
|
|
|
action = xact->delete_action;
|
|
|
|
ogs_assert(action);
|
2017-09-10 14:03:24 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug("[MME] Delete Session Response");
|
2019-11-07 14:07:29 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
sess = xact->data;
|
2019-11-11 14:09:35 +00:00
|
|
|
ogs_assert(sess);
|
|
|
|
mme_ue = sess->mme_ue;
|
|
|
|
ogs_assert(mme_ue);
|
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
rv = ogs_gtp_xact_commit(xact);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(rv == OGS_OK);
|
2019-11-15 14:56:55 +00:00
|
|
|
|
|
|
|
if (rsp->cause.presence) {
|
|
|
|
ogs_gtp_cause_t *cause = rsp->cause.data;
|
|
|
|
ogs_assert(cause);
|
2019-11-07 14:07:29 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = cause->value;
|
|
|
|
if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED)
|
|
|
|
ogs_warn("GTP Failed [CAUSE:%d] - Ignored", cause_value);
|
2019-11-07 14:07:29 +00:00
|
|
|
}
|
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
|
2017-09-10 14:03:24 +00:00
|
|
|
mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
|
|
|
|
|
2020-10-22 21:53:13 +00:00
|
|
|
if (action == OGS_GTP_DELETE_SEND_AUTHENTICATION_REUQEST) {
|
2019-06-19 09:04:57 +00:00
|
|
|
if (mme_sess_count(mme_ue) == 1) /* Last Session */ {
|
2017-12-17 15:01:07 +00:00
|
|
|
mme_s6a_send_air(mme_ue, NULL);
|
2018-01-30 12:57:19 +00:00
|
|
|
}
|
2020-10-22 21:53:13 +00:00
|
|
|
|
|
|
|
} else if (action == OGS_GTP_DELETE_SEND_DETACH_ACCEPT) {
|
2019-06-19 09:04:57 +00:00
|
|
|
if (mme_sess_count(mme_ue) == 1) /* Last Session */ {
|
2020-05-23 02:24:48 +00:00
|
|
|
nas_eps_send_detach_accept(mme_ue);
|
2018-01-30 12:57:19 +00:00
|
|
|
}
|
2020-10-22 21:53:13 +00:00
|
|
|
|
|
|
|
} else if (action ==
|
|
|
|
OGS_GTP_DELETE_SEND_DEACTIVATE_BEARER_CONTEXT_REQUEST) {
|
2017-09-10 14:03:24 +00:00
|
|
|
mme_bearer_t *bearer = mme_default_bearer_in_sess(sess);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(bearer);
|
2017-09-10 14:03:24 +00:00
|
|
|
|
2020-10-22 21:53:13 +00:00
|
|
|
nas_eps_send_deactivate_bearer_context_request(bearer);
|
2019-06-25 01:55:00 +00:00
|
|
|
|
2020-10-22 21:53:13 +00:00
|
|
|
/*
|
|
|
|
* mme_sess_remove() should not be called here.
|
|
|
|
*
|
|
|
|
* if Deactivate bearer context accept is received,
|
|
|
|
* Session will be removed */
|
|
|
|
CLEAR_SGW_S1U_PATH(sess);
|
|
|
|
return;
|
|
|
|
|
|
|
|
} else if (action == OGS_GTP_DELETE_SEND_UE_CONTEXT_RELEASE_COMMAND) {
|
2019-06-19 09:04:57 +00:00
|
|
|
if (mme_sess_count(mme_ue) == 1) /* Last Session */ {
|
2018-01-11 23:54:58 +00:00
|
|
|
enb_ue_t *enb_ue = NULL;
|
|
|
|
|
|
|
|
enb_ue = mme_ue->enb_ue;
|
2019-06-14 15:11:30 +00:00
|
|
|
if (enb_ue) {
|
2019-11-15 14:56:55 +00:00
|
|
|
s1ap_send_ue_context_release_command(enb_ue,
|
2019-06-14 15:11:30 +00:00
|
|
|
S1AP_Cause_PR_nas, S1AP_CauseNas_normal_release,
|
|
|
|
S1AP_UE_CTX_REL_UE_CONTEXT_REMOVE, 0);
|
|
|
|
} else
|
|
|
|
ogs_warn("ENB-S1 Context has already been removed");
|
2018-01-30 12:57:19 +00:00
|
|
|
}
|
2020-10-22 21:53:13 +00:00
|
|
|
|
|
|
|
} else if (action == OGS_GTP_DELETE_HANDLE_PDN_CONNECTIVITY_REQUEST) {
|
|
|
|
if (mme_sess_count(mme_ue) == 1) /* Last Session */ {
|
|
|
|
rv = nas_eps_send_emm_to_esm(mme_ue,
|
|
|
|
&mme_ue->pdn_connectivity_request);
|
|
|
|
if (rv != OGS_OK) {
|
|
|
|
ogs_error("nas_eps_send_emm_to_esm() failed");
|
|
|
|
nas_eps_send_attach_reject(mme_ue,
|
|
|
|
EMM_CAUSE_PROTOCOL_ERROR_UNSPECIFIED,
|
|
|
|
ESM_CAUSE_PROTOCOL_ERROR_UNSPECIFIED);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
} else {
|
|
|
|
ogs_fatal("Invalid action = %d", action);
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert_if_reached();
|
2020-10-22 21:53:13 +00:00
|
|
|
}
|
2017-09-10 14:03:24 +00:00
|
|
|
|
2018-01-30 12:57:19 +00:00
|
|
|
if (mme_sess_count(mme_ue) == 1) /* Last Session */
|
2018-02-02 12:09:37 +00:00
|
|
|
CLEAR_SESSION_CONTEXT(mme_ue);
|
2018-01-30 12:57:19 +00:00
|
|
|
|
|
|
|
mme_sess_remove(sess);
|
2017-09-10 14:03:24 +00:00
|
|
|
}
|
2018-01-16 11:49:39 +00:00
|
|
|
|
2017-09-04 13:00:51 +00:00
|
|
|
void mme_s11_handle_create_bearer_request(
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
|
|
|
|
ogs_gtp_create_bearer_request_t *req)
|
2017-08-27 07:30:10 +00:00
|
|
|
{
|
2019-04-27 14:54:30 +00:00
|
|
|
int rv;
|
2019-11-15 14:56:55 +00:00
|
|
|
uint8_t cause_value = 0;
|
2018-01-14 13:49:29 +00:00
|
|
|
mme_bearer_t *bearer = NULL, *default_bearer = NULL;
|
2017-09-04 13:00:51 +00:00
|
|
|
mme_sess_t *sess = NULL;
|
|
|
|
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_f_teid_t *sgw_s1u_teid = NULL;
|
|
|
|
ogs_gtp_bearer_qos_t bearer_qos;
|
2017-08-31 05:03:00 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(xact);
|
|
|
|
ogs_assert(req);
|
2017-09-01 12:35:45 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug("[MME] Create Bearer Response");
|
2017-08-31 05:03:00 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = OGS_GTP_CAUSE_REQUEST_ACCEPTED;
|
|
|
|
|
2019-06-19 09:04:57 +00:00
|
|
|
if (req->linked_eps_bearer_id.presence == 0) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_error("No Linked EBI");
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (mme_ue && cause_value == OGS_GTP_CAUSE_REQUEST_ACCEPTED) {
|
|
|
|
sess = mme_sess_find_by_ebi(mme_ue, req->linked_eps_bearer_id.u8);
|
|
|
|
ogs_assert(sess);
|
|
|
|
|
|
|
|
bearer = mme_bearer_add(sess);
|
|
|
|
ogs_assert(bearer);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!bearer) {
|
|
|
|
ogs_warn("No Context");
|
|
|
|
cause_value = OGS_GTP_CAUSE_CONTEXT_NOT_FOUND;
|
2017-09-04 13:00:51 +00:00
|
|
|
}
|
2019-11-15 14:56:55 +00:00
|
|
|
|
2019-06-19 09:04:57 +00:00
|
|
|
if (req->bearer_contexts.presence == 0) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_error("No Bearer");
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
|
2017-09-04 13:00:51 +00:00
|
|
|
}
|
2019-06-19 09:04:57 +00:00
|
|
|
if (req->bearer_contexts.eps_bearer_id.presence == 0) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_error("No EPS Bearer ID");
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
|
2017-09-04 13:00:51 +00:00
|
|
|
}
|
2019-06-19 09:04:57 +00:00
|
|
|
if (req->bearer_contexts.s1_u_enodeb_f_teid.presence == 0) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_error("No GTP TEID");
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
|
2017-09-04 13:00:51 +00:00
|
|
|
}
|
2019-06-19 09:04:57 +00:00
|
|
|
if (req->bearer_contexts.bearer_level_qos.presence == 0) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_error("No QoS");
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
|
2017-09-04 13:00:51 +00:00
|
|
|
}
|
2019-06-19 09:04:57 +00:00
|
|
|
if (req->bearer_contexts.tft.presence == 0) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_error("No TFT");
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED) {
|
|
|
|
ogs_gtp_send_error_message(xact, mme_ue ? mme_ue->sgw_s11_teid : 0,
|
|
|
|
OGS_GTP_CREATE_BEARER_RESPONSE_TYPE, cause_value);
|
2017-09-06 06:38:24 +00:00
|
|
|
return;
|
|
|
|
}
|
2017-09-04 13:00:51 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
|
2018-01-22 15:00:57 +00:00
|
|
|
mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
|
|
|
|
|
2020-01-22 12:33:25 +00:00
|
|
|
/* Set PTI */
|
|
|
|
sess = bearer->sess;
|
|
|
|
ogs_assert(sess);
|
|
|
|
sess->pti = OGS_NAS_PROCEDURE_TRANSACTION_IDENTITY_UNASSIGNED;
|
|
|
|
if (req->procedure_transaction_id.presence) {
|
|
|
|
sess->pti = req->procedure_transaction_id.u8;
|
|
|
|
ogs_debug(" PTI[%d]", sess->pti);
|
|
|
|
}
|
|
|
|
|
2017-09-04 13:00:51 +00:00
|
|
|
/* Data Plane(UL) : SGW-S1U */
|
|
|
|
sgw_s1u_teid = req->bearer_contexts.s1_u_enodeb_f_teid.data;
|
2020-10-01 17:27:58 +00:00
|
|
|
bearer->sgw_s1u_teid = be32toh(sgw_s1u_teid->teid);
|
2019-09-13 12:07:47 +00:00
|
|
|
rv = ogs_gtp_f_teid_to_ip(sgw_s1u_teid, &bearer->sgw_s1u_ip);
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(rv == OGS_OK);
|
2017-09-04 13:00:51 +00:00
|
|
|
|
|
|
|
/* Bearer QoS */
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(ogs_gtp_parse_bearer_qos(&bearer_qos,
|
2017-09-04 13:00:51 +00:00
|
|
|
&req->bearer_contexts.bearer_level_qos) ==
|
2019-04-27 14:54:30 +00:00
|
|
|
req->bearer_contexts.bearer_level_qos.len);
|
2017-09-04 13:00:51 +00:00
|
|
|
bearer->qos.qci = bearer_qos.qci;
|
|
|
|
bearer->qos.arp.priority_level = bearer_qos.priority_level;
|
|
|
|
bearer->qos.arp.pre_emption_capability =
|
|
|
|
bearer_qos.pre_emption_capability;
|
|
|
|
bearer->qos.arp.pre_emption_vulnerability =
|
|
|
|
bearer_qos.pre_emption_vulnerability;
|
2017-09-04 15:04:05 +00:00
|
|
|
bearer->qos.mbr.downlink = bearer_qos.dl_mbr;
|
|
|
|
bearer->qos.mbr.uplink = bearer_qos.ul_mbr;
|
|
|
|
bearer->qos.gbr.downlink = bearer_qos.dl_gbr;
|
|
|
|
bearer->qos.gbr.uplink = bearer_qos.ul_gbr;
|
2017-09-04 13:00:51 +00:00
|
|
|
|
2017-09-06 15:37:16 +00:00
|
|
|
/* Save Bearer TFT */
|
2019-09-13 12:07:47 +00:00
|
|
|
OGS_TLV_STORE_DATA(&bearer->tft, &req->bearer_contexts.tft);
|
2017-09-06 06:38:24 +00:00
|
|
|
|
2017-09-06 15:37:16 +00:00
|
|
|
/* Save Transaction. will be handled after EMM-attached */
|
|
|
|
bearer->xact = xact;
|
2018-01-14 13:49:29 +00:00
|
|
|
|
|
|
|
/* Before Activate DEDICATED bearer, we'll check DEFAULT bearer status */
|
|
|
|
default_bearer = mme_default_bearer_in_sess(sess);
|
2019-11-29 06:31:22 +00:00
|
|
|
ogs_expect_or_return(default_bearer);
|
2018-01-14 13:49:29 +00:00
|
|
|
|
|
|
|
if (/* Check if Activate Default Bearer Accept is received */
|
2019-04-27 14:54:30 +00:00
|
|
|
OGS_FSM_CHECK(&default_bearer->sm, esm_state_active) &&
|
2018-01-14 13:49:29 +00:00
|
|
|
/* Check if Initial Context Setup Response or
|
|
|
|
* E-RAB Setup Response is received */
|
2019-06-19 09:04:57 +00:00
|
|
|
MME_HAVE_ENB_S1U_PATH(default_bearer)) {
|
2020-05-23 02:24:48 +00:00
|
|
|
nas_eps_send_activate_dedicated_bearer_context_request(bearer);
|
2018-01-14 13:49:29 +00:00
|
|
|
}
|
2017-04-28 02:20:09 +00:00
|
|
|
}
|
2017-07-25 12:15:25 +00:00
|
|
|
|
2018-01-17 06:41:45 +00:00
|
|
|
void mme_s11_handle_update_bearer_request(
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
|
|
|
|
ogs_gtp_update_bearer_request_t *req)
|
2018-01-17 06:41:45 +00:00
|
|
|
{
|
2019-11-15 14:56:55 +00:00
|
|
|
uint8_t cause_value = 0;
|
2018-01-17 06:41:45 +00:00
|
|
|
mme_bearer_t *bearer = NULL;
|
2020-01-22 12:33:25 +00:00
|
|
|
mme_sess_t *sess = NULL;
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_bearer_qos_t bearer_qos;
|
2018-01-17 06:41:45 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(xact);
|
|
|
|
ogs_assert(req);
|
2018-01-17 06:41:45 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug("[MME] Update Bearer Request");
|
2019-11-11 14:09:35 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = OGS_GTP_CAUSE_REQUEST_ACCEPTED;
|
|
|
|
|
2019-06-19 09:04:57 +00:00
|
|
|
if (req->bearer_contexts.presence == 0) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_error("No Bearer");
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
|
2018-01-17 06:41:45 +00:00
|
|
|
}
|
2019-06-19 09:04:57 +00:00
|
|
|
if (req->bearer_contexts.eps_bearer_id.presence == 0) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_error("No EPS Bearer ID");
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = OGS_GTP_CAUSE_MANDATORY_IE_MISSING;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (mme_ue && cause_value == OGS_GTP_CAUSE_REQUEST_ACCEPTED) {
|
|
|
|
bearer = mme_bearer_find_by_ue_ebi(mme_ue,
|
|
|
|
req->bearer_contexts.eps_bearer_id.u8);
|
2019-11-29 06:31:22 +00:00
|
|
|
ogs_expect_or_return(bearer);
|
2019-11-15 14:56:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (!bearer) {
|
|
|
|
ogs_warn("No Context");
|
|
|
|
cause_value = OGS_GTP_CAUSE_CONTEXT_NOT_FOUND;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED) {
|
|
|
|
ogs_gtp_send_error_message(xact, mme_ue ? mme_ue->sgw_s11_teid : 0,
|
|
|
|
OGS_GTP_UPDATE_BEARER_RESPONSE_TYPE, cause_value);
|
2018-01-17 06:41:45 +00:00
|
|
|
return;
|
|
|
|
}
|
2019-11-11 14:09:35 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
|
2018-01-22 15:00:57 +00:00
|
|
|
mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
|
2018-01-17 06:41:45 +00:00
|
|
|
|
2020-01-22 12:33:25 +00:00
|
|
|
/* Set PTI */
|
|
|
|
sess = bearer->sess;
|
|
|
|
ogs_assert(sess);
|
|
|
|
sess->pti = OGS_NAS_PROCEDURE_TRANSACTION_IDENTITY_UNASSIGNED;
|
|
|
|
if (req->procedure_transaction_id.presence) {
|
|
|
|
sess->pti = req->procedure_transaction_id.u8;
|
|
|
|
ogs_debug(" PTI[%d]", sess->pti);
|
|
|
|
}
|
|
|
|
|
2018-01-17 06:41:45 +00:00
|
|
|
/* Save Transaction. will be handled after EMM-attached */
|
|
|
|
bearer->xact = xact;
|
|
|
|
|
|
|
|
if (/* Check if Activate Default/Dedicated Bearer Accept is received */
|
2019-04-27 14:54:30 +00:00
|
|
|
OGS_FSM_CHECK(&bearer->sm, esm_state_active) &&
|
2018-01-17 06:41:45 +00:00
|
|
|
/* Check if Initial Context Setup Response or
|
|
|
|
* E-RAB Setup Response is received */
|
2019-06-19 09:04:57 +00:00
|
|
|
MME_HAVE_ENB_S1U_PATH(bearer)) {
|
|
|
|
if (req->bearer_contexts.bearer_level_qos.presence == 1) {
|
2018-01-17 06:41:45 +00:00
|
|
|
/* Bearer QoS */
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(ogs_gtp_parse_bearer_qos(&bearer_qos,
|
2018-01-17 06:41:45 +00:00
|
|
|
&req->bearer_contexts.bearer_level_qos) ==
|
2019-04-27 14:54:30 +00:00
|
|
|
req->bearer_contexts.bearer_level_qos.len);
|
2018-01-17 06:41:45 +00:00
|
|
|
bearer->qos.qci = bearer_qos.qci;
|
|
|
|
bearer->qos.arp.priority_level = bearer_qos.priority_level;
|
|
|
|
bearer->qos.arp.pre_emption_capability =
|
|
|
|
bearer_qos.pre_emption_capability;
|
|
|
|
bearer->qos.arp.pre_emption_vulnerability =
|
|
|
|
bearer_qos.pre_emption_vulnerability;
|
|
|
|
bearer->qos.mbr.downlink = bearer_qos.dl_mbr;
|
|
|
|
bearer->qos.mbr.uplink = bearer_qos.ul_mbr;
|
|
|
|
bearer->qos.gbr.downlink = bearer_qos.dl_gbr;
|
|
|
|
bearer->qos.gbr.uplink = bearer_qos.ul_gbr;
|
|
|
|
}
|
|
|
|
|
2019-06-19 09:04:57 +00:00
|
|
|
if (req->bearer_contexts.tft.presence == 1) {
|
2018-01-17 06:41:45 +00:00
|
|
|
/* Save Bearer TFT */
|
2019-09-13 12:07:47 +00:00
|
|
|
OGS_TLV_STORE_DATA(&bearer->tft, &req->bearer_contexts.tft);
|
2018-01-17 06:41:45 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (req->bearer_contexts.bearer_level_qos.presence == 1 ||
|
2019-06-19 09:04:57 +00:00
|
|
|
req->bearer_contexts.tft.presence == 1) {
|
2020-05-23 02:24:48 +00:00
|
|
|
nas_eps_send_modify_bearer_context_request(bearer,
|
2018-01-17 06:41:45 +00:00
|
|
|
req->bearer_contexts.bearer_level_qos.presence,
|
|
|
|
req->bearer_contexts.tft.presence);
|
2019-06-19 09:04:57 +00:00
|
|
|
} else {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_warn("[IGNORE] Update Bearer Request : "
|
2018-01-17 06:41:45 +00:00
|
|
|
"Both QoS and TFT is NULL");
|
2019-12-28 12:46:30 +00:00
|
|
|
|
|
|
|
if (xact->xid & OGS_GTP_CMD_XACT_ID) {
|
|
|
|
/* MME recieved Bearer resource modification request */
|
2020-05-23 02:24:48 +00:00
|
|
|
nas_eps_send_bearer_resource_modification_reject(
|
2019-12-28 12:46:30 +00:00
|
|
|
bearer, ESM_CAUSE_SERVICE_OPTION_NOT_SUPPORTED);
|
|
|
|
}
|
|
|
|
|
2019-11-30 07:45:09 +00:00
|
|
|
mme_gtp_send_update_bearer_response(bearer);
|
2018-01-17 06:41:45 +00:00
|
|
|
}
|
2019-06-19 09:04:57 +00:00
|
|
|
} else {
|
|
|
|
if (!OGS_FSM_CHECK(&bearer->sm, esm_state_active)) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert_if_reached();
|
2019-06-19 09:04:57 +00:00
|
|
|
} else if (!MME_HAVE_ENB_S1U_PATH(bearer)) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert_if_reached();
|
2019-06-19 09:04:57 +00:00
|
|
|
} else
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert_if_reached();
|
2018-01-17 06:41:45 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-01-16 11:49:39 +00:00
|
|
|
void mme_s11_handle_delete_bearer_request(
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
|
|
|
|
ogs_gtp_delete_bearer_request_t *req)
|
2018-01-16 11:49:39 +00:00
|
|
|
{
|
|
|
|
mme_bearer_t *bearer = NULL;
|
2020-01-22 12:33:25 +00:00
|
|
|
mme_sess_t *sess = NULL;
|
2018-01-16 11:49:39 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(xact);
|
|
|
|
ogs_assert(req);
|
2018-01-16 11:49:39 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug("[MME] Delete Bearer Request");
|
2019-11-11 14:09:35 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (mme_ue && req->linked_eps_bearer_id.presence == 1) {
|
2019-06-19 09:04:57 +00:00
|
|
|
bearer = mme_bearer_find_by_ue_ebi(
|
|
|
|
mme_ue, req->linked_eps_bearer_id.u8);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(bearer);
|
2019-11-15 14:56:55 +00:00
|
|
|
} else if (mme_ue && req->eps_bearer_ids.presence == 1) {
|
2018-01-16 11:49:39 +00:00
|
|
|
bearer = mme_bearer_find_by_ue_ebi(
|
|
|
|
mme_ue, req->eps_bearer_ids.u8);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(bearer);
|
2019-06-19 09:04:57 +00:00
|
|
|
} else {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_error("No Linked EBI or EPS Bearer ID");
|
2019-11-15 14:56:55 +00:00
|
|
|
ogs_gtp_send_error_message(xact, mme_ue ? mme_ue->sgw_s11_teid : 0,
|
|
|
|
OGS_GTP_DELETE_BEARER_RESPONSE_TYPE,
|
|
|
|
OGS_GTP_CAUSE_CONTEXT_NOT_FOUND);
|
2018-01-16 11:49:39 +00:00
|
|
|
return;
|
|
|
|
}
|
2019-11-11 14:09:35 +00:00
|
|
|
|
|
|
|
ogs_assert(mme_ue);
|
2019-11-15 14:56:55 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
|
2018-01-22 15:00:57 +00:00
|
|
|
mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
|
2018-01-16 11:49:39 +00:00
|
|
|
|
2020-01-22 12:33:25 +00:00
|
|
|
/* Set PTI */
|
|
|
|
sess = bearer->sess;
|
|
|
|
ogs_assert(sess);
|
|
|
|
sess->pti = OGS_NAS_PROCEDURE_TRANSACTION_IDENTITY_UNASSIGNED;
|
|
|
|
if (req->procedure_transaction_id.presence) {
|
|
|
|
sess->pti = req->procedure_transaction_id.u8;
|
|
|
|
ogs_debug(" PTI[%d]", sess->pti);
|
|
|
|
}
|
|
|
|
|
2018-01-16 11:49:39 +00:00
|
|
|
/* Save Transaction. will be handled after EMM-attached */
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_assert(bearer);
|
2018-01-16 11:49:39 +00:00
|
|
|
bearer->xact = xact;
|
|
|
|
|
|
|
|
if (/* Check if Activate Default/Dedicated Bearer Accept is received */
|
2019-04-27 14:54:30 +00:00
|
|
|
OGS_FSM_CHECK(&bearer->sm, esm_state_active) &&
|
2018-01-16 11:49:39 +00:00
|
|
|
/* Check if Initial Context Setup Response or
|
|
|
|
* E-RAB Setup Response is received */
|
2019-06-19 09:04:57 +00:00
|
|
|
MME_HAVE_ENB_S1U_PATH(bearer)) {
|
2020-05-23 02:24:48 +00:00
|
|
|
nas_eps_send_deactivate_bearer_context_request(bearer);
|
2019-06-19 09:04:57 +00:00
|
|
|
} else {
|
|
|
|
if (!OGS_FSM_CHECK(&bearer->sm, esm_state_active)) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert_if_reached();
|
2019-06-19 09:04:57 +00:00
|
|
|
} else if (!MME_HAVE_ENB_S1U_PATH(bearer)) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert_if_reached();
|
2019-06-19 09:04:57 +00:00
|
|
|
} else
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert_if_reached();
|
2018-01-16 11:49:39 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
2017-07-25 12:15:25 +00:00
|
|
|
void mme_s11_handle_release_access_bearers_response(
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
|
|
|
|
ogs_gtp_release_access_bearers_response_t *rsp)
|
2017-07-25 12:15:25 +00:00
|
|
|
{
|
2019-04-27 14:54:30 +00:00
|
|
|
int rv;
|
2019-11-15 14:56:55 +00:00
|
|
|
uint8_t cause_value = 0;
|
2017-09-10 14:03:24 +00:00
|
|
|
enb_ue_t *enb_ue = NULL;
|
2017-09-01 12:35:45 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(xact);
|
|
|
|
ogs_assert(rsp);
|
2017-07-25 12:15:25 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug("[MME] Release Access Bearers Response");
|
2018-02-01 13:48:59 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (!mme_ue) {
|
|
|
|
ogs_warn("No Context in TEID");
|
|
|
|
mme_ue = xact->data;
|
|
|
|
ogs_assert(mme_ue);
|
|
|
|
}
|
|
|
|
|
2019-09-13 12:07:47 +00:00
|
|
|
rv = ogs_gtp_xact_commit(xact);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(rv == OGS_OK);
|
2018-02-01 13:48:59 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (rsp->cause.presence) {
|
|
|
|
ogs_gtp_cause_t *cause = rsp->cause.data;
|
|
|
|
ogs_assert(cause);
|
2019-11-11 14:09:35 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = cause->value;
|
|
|
|
if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED)
|
|
|
|
ogs_warn("GTP Failed [CAUSE:%d]", cause_value);
|
2019-11-11 14:09:35 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
|
|
|
|
mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
|
2017-08-31 05:03:00 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED) {
|
|
|
|
mme_send_delete_session_or_mme_ue_context_release(mme_ue);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2018-02-03 13:55:05 +00:00
|
|
|
rv = CLEAR_BEARER_CONTEXT(mme_ue);
|
2019-11-29 06:31:22 +00:00
|
|
|
ogs_expect(rv == OGS_OK);
|
2017-09-10 14:03:24 +00:00
|
|
|
|
2019-11-11 14:09:35 +00:00
|
|
|
enb_ue = mme_ue->enb_ue;
|
2019-06-14 15:11:30 +00:00
|
|
|
if (enb_ue) {
|
2019-11-15 14:56:55 +00:00
|
|
|
s1ap_send_ue_context_release_command(enb_ue,
|
2019-06-14 15:11:30 +00:00
|
|
|
S1AP_Cause_PR_nas, S1AP_CauseNas_normal_release,
|
2019-11-15 14:56:55 +00:00
|
|
|
S1AP_UE_CTX_REL_S1_REMOVE_AND_UNLINK, 0);
|
2019-11-11 14:09:35 +00:00
|
|
|
} else {
|
2019-06-14 15:11:30 +00:00
|
|
|
ogs_warn("ENB-S1 Context has already been removed");
|
2019-11-11 14:09:35 +00:00
|
|
|
}
|
2017-07-25 12:15:25 +00:00
|
|
|
}
|
2017-08-02 23:18:19 +00:00
|
|
|
|
|
|
|
void mme_s11_handle_downlink_data_notification(
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
|
|
|
|
ogs_gtp_downlink_data_notification_t *noti)
|
2017-08-02 23:18:19 +00:00
|
|
|
{
|
2019-04-27 14:54:30 +00:00
|
|
|
int rv;
|
2020-10-21 00:00:02 +00:00
|
|
|
uint8_t cause_value = 0;
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_header_t h;
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_pkbuf_t *s11buf = NULL;
|
2017-08-02 23:18:19 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(xact);
|
|
|
|
ogs_assert(noti);
|
2017-08-02 23:18:19 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug("[MME] Downlink Data Notification");
|
2019-11-11 14:09:35 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (!mme_ue) {
|
2020-09-08 02:02:45 +00:00
|
|
|
ogs_warn("OGS_GTP_CAUSE_CONTEXT_NOT_FOUND");
|
2019-11-15 14:56:55 +00:00
|
|
|
ogs_gtp_send_error_message(xact, mme_ue ? mme_ue->sgw_s11_teid : 0,
|
|
|
|
OGS_GTP_DOWNLINK_DATA_NOTIFICATION_ACKNOWLEDGE_TYPE,
|
2020-10-21 00:00:02 +00:00
|
|
|
OGS_GTP_CAUSE_CONTEXT_NOT_FOUND);
|
2019-11-15 14:56:55 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2020-10-21 00:00:02 +00:00
|
|
|
ogs_assert(mme_ue);
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
|
2018-01-11 04:42:33 +00:00
|
|
|
mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
|
2017-08-02 23:18:19 +00:00
|
|
|
|
2017-08-09 15:41:09 +00:00
|
|
|
/* Build Downlink data notification ack */
|
2019-09-13 12:07:47 +00:00
|
|
|
memset(&h, 0, sizeof(ogs_gtp_header_t));
|
|
|
|
h.type = OGS_GTP_DOWNLINK_DATA_NOTIFICATION_ACKNOWLEDGE_TYPE;
|
2017-09-01 12:35:45 +00:00
|
|
|
h.teid = mme_ue->sgw_s11_teid;
|
2017-09-01 04:51:31 +00:00
|
|
|
|
2019-11-30 07:45:09 +00:00
|
|
|
s11buf = mme_s11_build_downlink_data_notification_ack(h.type);
|
|
|
|
ogs_expect_or_return(s11buf);
|
2017-08-09 15:41:09 +00:00
|
|
|
|
2019-09-13 12:07:47 +00:00
|
|
|
rv = ogs_gtp_xact_update_tx(xact, &h, s11buf);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(rv == OGS_OK);
|
2017-08-31 05:03:00 +00:00
|
|
|
|
2019-09-13 12:07:47 +00:00
|
|
|
rv = ogs_gtp_xact_commit(xact);
|
2019-11-29 06:31:22 +00:00
|
|
|
ogs_expect(rv == OGS_OK);
|
2020-10-21 00:00:02 +00:00
|
|
|
|
|
|
|
if (noti->cause.presence) {
|
|
|
|
ogs_gtp_cause_t *cause = noti->cause.data;
|
|
|
|
ogs_assert(cause);
|
|
|
|
|
|
|
|
cause_value = cause->value;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* 5.3.4.2 in Spec 23.401
|
|
|
|
* Under certain conditions, the current UE triggered Service Request
|
|
|
|
* procedure can cause unnecessary Downlink Packet Notification messages
|
|
|
|
* which increase the load of the MME.
|
|
|
|
*
|
|
|
|
* This can occur when uplink data sent in step 6 causes a response
|
|
|
|
* on the downlink which arrives at the Serving GW before the Modify Bearer
|
|
|
|
* Request message, step 8. This data cannot be forwarded from the Serving GW
|
|
|
|
* to the eNodeB and hence it triggers a Downlink Data Notification message.
|
|
|
|
*
|
|
|
|
* If the MME receives a Downlink Data Notification after step 2 and
|
|
|
|
* before step 9, the MME shall not send S1 interface paging messages
|
|
|
|
*/
|
|
|
|
if (ECM_IDLE(mme_ue)) {
|
|
|
|
s1ap_send_paging(mme_ue, S1AP_CNDomain_ps);
|
|
|
|
|
|
|
|
} else if (ECM_CONNECTED(mme_ue)) {
|
|
|
|
if (cause_value == OGS_GTP_CAUSE_ERROR_INDICATION_RECEIVED) {
|
|
|
|
|
|
|
|
/*
|
|
|
|
* TS23.007 22. Downlink Data Notification Handling at MME/S4 SGSN
|
|
|
|
*
|
|
|
|
* If the MME/S4 SGSN receives a Downlink Data Notification message from
|
|
|
|
* the SGW as a result of the SGW having received an Error Indication message
|
|
|
|
* from the eNodeB/RNC or S4-SGSN over S4 User Plane, the MME/S4 SGSN should
|
|
|
|
* perform the following:
|
|
|
|
*
|
|
|
|
* - If the UE is in IDLE state, upon receipt of the Downlink Data
|
|
|
|
* Notification message, the MME/S4 SGSN shall perform the Network
|
|
|
|
* Triggered Service Request procedure as specified in 3GPP TS 23.060[5]
|
|
|
|
* and 3GPP TS 23.401 [15].
|
|
|
|
* - If the UE is in CONNECTED state, upon receipt of the Downlink Data
|
|
|
|
* Notification message, the MME shall perform S1 Release procedure and
|
|
|
|
* perform Network Triggered Service Request procedure as specified
|
|
|
|
* in 3GPP TS 23.401 [15].
|
|
|
|
* - If the UE is in CONNECTED state, upon receipt of the Downlink Data
|
|
|
|
* Notification message and Direct Tunnel is used, the S4-SGSN shall
|
|
|
|
* perform Iu Release procedure and perform Network Triggered Service
|
|
|
|
* Request procedure as specified in 3GPP TS 23.060 [5]
|
|
|
|
* if the cause value included in Downlink Data Notification is
|
|
|
|
* "Error Indication received from RNC/eNodeB/S4-SGSN",
|
|
|
|
* - If the UE is in CONNECTED state, upon receipt of the Downlink Data
|
|
|
|
* Notification message and Direct Tunnel is not used, the S4-SGSN should
|
|
|
|
* re-establish all of the S4-U bearers of this UE if the cause value
|
|
|
|
* included in Downlink Data Notification is "Error Indication received
|
|
|
|
* from RNC/eNodeB/S4-SGSN"
|
|
|
|
*/
|
|
|
|
enb_ue_t *enb_ue = mme_ue->enb_ue;
|
|
|
|
ogs_assert(enb_ue);
|
|
|
|
|
|
|
|
s1ap_send_ue_context_release_command(enb_ue,
|
|
|
|
S1AP_Cause_PR_nas, S1AP_CauseNas_normal_release,
|
|
|
|
S1AP_UE_CTX_REL_S1_PAGING, 0);
|
|
|
|
}
|
|
|
|
}
|
2017-08-02 23:18:19 +00:00
|
|
|
}
|
2017-09-13 11:35:19 +00:00
|
|
|
|
|
|
|
void mme_s11_handle_create_indirect_data_forwarding_tunnel_response(
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
|
|
|
|
ogs_gtp_create_indirect_data_forwarding_tunnel_response_t *rsp)
|
2017-09-13 11:35:19 +00:00
|
|
|
{
|
2019-04-27 14:54:30 +00:00
|
|
|
int rv;
|
2019-11-15 14:56:55 +00:00
|
|
|
uint8_t cause_value = 0;
|
2017-09-13 12:51:02 +00:00
|
|
|
mme_bearer_t *bearer = NULL;
|
2017-09-15 03:06:26 +00:00
|
|
|
enb_ue_t *source_ue = NULL;
|
2017-09-13 12:51:02 +00:00
|
|
|
int i;
|
|
|
|
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_f_teid_t *teid = NULL;
|
2017-09-13 12:51:02 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(xact);
|
|
|
|
ogs_assert(rsp);
|
2017-09-13 12:51:02 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug("[MME] Create Indirect Data Forwarding Tunnel Response");
|
2019-11-11 14:09:35 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (!mme_ue) {
|
|
|
|
ogs_warn("No Context in TEID");
|
|
|
|
mme_ue = xact->data;
|
|
|
|
ogs_assert(mme_ue);
|
|
|
|
}
|
|
|
|
|
2019-11-11 14:09:35 +00:00
|
|
|
rv = ogs_gtp_xact_commit(xact);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(rv == OGS_OK);
|
2019-11-11 14:09:35 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (rsp->cause.presence) {
|
|
|
|
ogs_gtp_cause_t *cause = rsp->cause.data;
|
|
|
|
ogs_assert(cause);
|
2019-11-11 14:09:35 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
cause_value = cause->value;
|
|
|
|
if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED)
|
|
|
|
ogs_warn("GTP Failed [CAUSE:%d]", cause_value);
|
2019-11-11 14:09:35 +00:00
|
|
|
}
|
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
|
2018-01-11 04:42:33 +00:00
|
|
|
mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
|
2017-09-13 12:51:02 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED) {
|
|
|
|
mme_send_delete_session_or_mme_ue_context_release(mme_ue);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2020-07-09 05:38:09 +00:00
|
|
|
for (i = 0; rsp->bearer_contexts[i].presence; i++) {
|
|
|
|
if (rsp->bearer_contexts[i].eps_bearer_id.presence == 0) {
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_error("No EBI");
|
2017-09-13 12:51:02 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
bearer = mme_bearer_find_by_ue_ebi(mme_ue,
|
2020-07-09 05:38:09 +00:00
|
|
|
rsp->bearer_contexts[i].eps_bearer_id.u8);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(bearer);
|
2017-09-13 12:51:02 +00:00
|
|
|
|
2020-07-09 05:38:09 +00:00
|
|
|
if (rsp->bearer_contexts[i].s4_u_sgsn_f_teid.presence) {
|
|
|
|
teid = rsp->bearer_contexts[i].s4_u_sgsn_f_teid.data;
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(teid);
|
2017-09-13 12:51:02 +00:00
|
|
|
|
2020-10-01 17:27:58 +00:00
|
|
|
bearer->sgw_dl_teid = be32toh(teid->teid);
|
2019-09-13 12:07:47 +00:00
|
|
|
rv = ogs_gtp_f_teid_to_ip(teid, &bearer->sgw_dl_ip);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(rv == OGS_OK);
|
2017-09-13 12:51:02 +00:00
|
|
|
}
|
2020-07-09 05:38:09 +00:00
|
|
|
if (rsp->bearer_contexts[i].s2b_u_epdg_f_teid_5.presence) {
|
|
|
|
teid = rsp->bearer_contexts[i].s2b_u_epdg_f_teid_5.data;
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(teid);
|
2017-09-13 12:51:02 +00:00
|
|
|
|
2020-10-01 17:27:58 +00:00
|
|
|
bearer->sgw_ul_teid = be32toh(teid->teid);
|
2019-09-13 12:07:47 +00:00
|
|
|
rv = ogs_gtp_f_teid_to_ip(teid, &bearer->sgw_ul_ip);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(rv == OGS_OK);
|
2017-09-13 12:51:02 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-11-11 14:09:35 +00:00
|
|
|
source_ue = mme_ue->enb_ue;
|
|
|
|
ogs_assert(source_ue);
|
|
|
|
|
2019-11-30 07:45:09 +00:00
|
|
|
s1ap_send_handover_command(source_ue);
|
2017-09-13 11:35:19 +00:00
|
|
|
}
|
2017-09-14 05:18:47 +00:00
|
|
|
|
|
|
|
void mme_s11_handle_delete_indirect_data_forwarding_tunnel_response(
|
2019-09-13 12:07:47 +00:00
|
|
|
ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
|
|
|
|
ogs_gtp_delete_indirect_data_forwarding_tunnel_response_t *rsp)
|
2017-09-14 05:18:47 +00:00
|
|
|
{
|
2019-04-27 14:54:30 +00:00
|
|
|
int rv;
|
2019-11-15 14:56:55 +00:00
|
|
|
uint8_t cause_value = 0;
|
2017-09-14 05:18:47 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_assert(xact);
|
|
|
|
ogs_assert(rsp);
|
2017-09-14 05:18:47 +00:00
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug("[MME] Delete Indirect Data Forwarding Tunnel Response");
|
2019-11-11 14:09:35 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (!mme_ue) {
|
|
|
|
ogs_warn("No Context in TEID");
|
|
|
|
mme_ue = xact->data;
|
|
|
|
ogs_assert(mme_ue);
|
|
|
|
}
|
|
|
|
|
2019-11-11 14:09:35 +00:00
|
|
|
rv = ogs_gtp_xact_commit(xact);
|
2019-11-30 07:45:09 +00:00
|
|
|
ogs_expect_or_return(rv == OGS_OK);
|
2019-11-11 14:09:35 +00:00
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (rsp->cause.presence) {
|
|
|
|
ogs_gtp_cause_t *cause = rsp->cause.data;
|
|
|
|
ogs_assert(cause);
|
|
|
|
|
|
|
|
cause_value = cause->value;
|
|
|
|
if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED)
|
|
|
|
ogs_warn("GTP Failed [CAUSE:%d]", cause_value);
|
2019-11-11 14:09:35 +00:00
|
|
|
}
|
|
|
|
|
2019-11-15 14:56:55 +00:00
|
|
|
if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED) {
|
|
|
|
mme_send_delete_session_or_mme_ue_context_release(mme_ue);
|
2019-11-11 14:09:35 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2019-04-27 14:54:30 +00:00
|
|
|
ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
|
2018-01-11 04:42:33 +00:00
|
|
|
mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
|
2017-09-14 05:18:47 +00:00
|
|
|
|
2018-03-07 13:32:31 +00:00
|
|
|
rv = mme_ue_clear_indirect_tunnel(mme_ue);
|
2019-11-29 06:31:22 +00:00
|
|
|
ogs_expect(rv == OGS_OK);
|
2017-09-14 05:18:47 +00:00
|
|
|
}
|
2019-12-28 12:46:30 +00:00
|
|
|
|
|
|
|
void mme_s11_handle_bearer_resource_failure_indication(
|
|
|
|
ogs_gtp_xact_t *xact, mme_ue_t *mme_ue,
|
|
|
|
ogs_gtp_bearer_resource_failure_indication_t *ind)
|
|
|
|
{
|
|
|
|
int rv;
|
|
|
|
uint8_t cause_value = 0;
|
|
|
|
|
|
|
|
mme_bearer_t *bearer = NULL;
|
|
|
|
|
|
|
|
ogs_assert(xact);
|
|
|
|
bearer = xact->data;
|
|
|
|
ogs_assert(ind);
|
|
|
|
|
|
|
|
ogs_debug("[MME] Bearer Resource Failure Indication");
|
|
|
|
|
|
|
|
rv = ogs_gtp_xact_commit(xact);
|
|
|
|
ogs_expect_or_return(rv == OGS_OK);
|
|
|
|
|
|
|
|
if (ind->cause.presence) {
|
|
|
|
ogs_gtp_cause_t *cause = ind->cause.data;
|
|
|
|
ogs_assert(cause);
|
|
|
|
|
|
|
|
cause_value = cause->value;
|
|
|
|
if (cause_value != OGS_GTP_CAUSE_REQUEST_ACCEPTED)
|
|
|
|
ogs_warn("GTP Failed [CAUSE:%d] - Ignored", cause_value);
|
|
|
|
} else {
|
|
|
|
ogs_error("No Cause");
|
|
|
|
}
|
|
|
|
|
|
|
|
ogs_debug(" MME_S11_TEID[%d] SGW_S11_TEID[%d]",
|
|
|
|
mme_ue->mme_s11_teid, mme_ue->sgw_s11_teid);
|
|
|
|
|
2020-05-23 02:24:48 +00:00
|
|
|
nas_eps_send_bearer_resource_modification_reject(
|
2019-12-28 12:46:30 +00:00
|
|
|
bearer, ESM_CAUSE_SERVICE_OPTION_NOT_SUPPORTED);
|
|
|
|
}
|