forked from acouzens/open5gs
62 lines
2.4 KiB
C
62 lines
2.4 KiB
C
/*
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* Copyright (C) 2023 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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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-context.h"
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#include "mme-gn-build.h"
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/* 3GPP TS 29.060 7.5.14.1 RAN Information Relay */
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ogs_pkbuf_t *mme_gn_build_ran_information_relay(
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uint8_t type, const uint8_t *buf, size_t len,
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const ogs_nas_rai_t *rai, uint16_t cell_id)
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{
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ogs_gtp1_message_t gtp1_message;
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ogs_gtp1_ran_information_relay_t *req = NULL;
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uint8_t rt_addr[sizeof(*rai) + sizeof(cell_id)];
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ogs_debug("[Gn] build RAN Information Relay");
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req = >p1_message.ran_information_relay;
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memset(>p1_message, 0, sizeof(ogs_gtp1_message_t));
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/* 3GPP TS 29.060 7.7.43 RAN Transparent Container, Mandatory */
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req->ran_transparent_container.presence = 1;
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req->ran_transparent_container.data = (void*)buf;
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req->ran_transparent_container.len = len;
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/* 3GPP TS 29.060 7.7.57 RAN RIM Routing Address, Optional */
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req->rim_routing_address.presence = !!rai;
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if (req->rim_routing_address.presence) {
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memcpy(&rt_addr[0], rai, sizeof(*rai));
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memcpy(&rt_addr[sizeof(*rai)], &cell_id, sizeof(cell_id));
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req->rim_routing_address.data = &rt_addr[0];
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req->rim_routing_address.len = sizeof(rt_addr);
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}
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/* 3GPP TS 29.060 7.7.77 RIM Routing Address Discriminator, Optional */
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/* 3GPP TS 48.018 11.3.70 RIM Routing Information IE: */
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uint8_t rim_routing_address_disc = 0; /* "A Cell Identifier is used to identify a GERAN cell."" */
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req->rim_routing_address_discriminator.presence = req->rim_routing_address.presence;
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req->rim_routing_address_discriminator.data = &rim_routing_address_disc;
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req->rim_routing_address_discriminator.len = 1;
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gtp1_message.h.type = type;
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return ogs_gtp1_build_msg(>p1_message);
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} |