forked from acouzens/open5gs
412 lines
15 KiB
C
412 lines
15 KiB
C
/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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* Copyright (C) 2022 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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#if !defined(OGS_GTP_INSIDE) && !defined(OGS_GTP_COMPILATION)
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#error "This header cannot be included directly."
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#endif
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#ifndef OGS_GTP1_TYPES_H
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#define OGS_GTP1_TYPES_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define OGS_GTP1_MAX_INDIRECT_TUNNEL 8
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#define OGS_GTPV1U_5GC_HEADER_LEN 16
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/*
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* 5GC GTP Header (16byte)
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* o Flags(1byte) : 0x34
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* o Message Type(1byte) : T-PDU (0xff)
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* o Length(2byte) : 36
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* o TEID(4byte) : 0x00000001
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* o Next extension header type(4byte)
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* - Sequence Number(2byte) : 0x0000
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* - N PDU Number(1byte) : 0x00
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* - PDU Session container(1byte) : (0x85)
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* o Extension header(4byte)
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* - Extension HEader Length(1byte) : 1
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* - PDU Session Container(2byte)
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* ; PDU Type : UL PDU SESSION INFORMATION (1)
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* ; QoS Flow Identifier (QFI) : 1
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* - Next extension header type : No more extension headers (0x00)
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*/
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#define OGS_GTPV1U_EXTENSION_HEADER_LEN 4
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typedef struct ogs_gtp1_extension_header_s {
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#define OGS_GTP1_EXTENSION_HEADER_TYPE_UDP_PORT 0x40
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#define OGS_GTP1_EXTENSION_HEADER_TYPE_PDU_SESSION_CONTAINER 0x85
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#define OGS_GTP1_EXTENSION_HEADER_TYPE_NO_MORE_EXTENSION_HEADERS 0x0
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uint16_t sequence_number;
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uint8_t n_pdu_number;
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uint8_t type;
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uint8_t len;
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#define OGS_GTP1_EXTENSION_HEADER_PDU_TYPE_DL_PDU_SESSION_INFORMATION 0
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#define OGS_GTP1_EXTENSION_HEADER_PDU_TYPE_UL_PDU_SESSION_INFORMATION 1
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ED2(uint8_t pdu_type:4;,
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uint8_t spare1:4;);
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ED3(uint8_t paging_policy_presence:1;,
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uint8_t reflective_qos_indicator:1;,
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uint8_t qos_flow_identifier:6;);
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uint8_t next_type;
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} __attribute__ ((packed)) ogs_gtp1_extension_header_t;
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/* TS 29.060 16.0.0 Table 38: Cause Values */
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#define OGS_GTP1_CAUSE_REQUEST_IMSI 0
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#define OGS_GTP1_CAUSE_REQUEST_IMEI 1
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#define OGS_GTP1_CAUSE_REQUEST_IMSI_IMEI 2
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#define OGS_GTP1_CAUSE_NO_ID_NEEDED 3
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#define OGS_GTP1_CAUSE_MS_REFUSES 4
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#define OGS_GTP1_CAUSE_MS_NOT_GPRS_RESPONDING 5
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#define OGS_GTP1_CAUSE_REACTIACTION_REQUESTED 6
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#define OGS_GTP1_CAUSE_PDP_ADDRESS_INACTIVITY_TIMER_EXP 7
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#define OGS_GTP1_CAUSE_NETWORK_FAILURE 8
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#define OGS_GTP1_CAUSE_QOS_PARAMETER_MISMATCH 9
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/* 10-48 for future use */
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/* 49-63 reserved for GTP' */
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/* 64-127 for future use */
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#define OGS_GTP1_CAUSE_REQUEST_ACCEPTED 128
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#define OGS_GTP1_CAUSE_NEW_PDP_TYPE_DUE_TO_NETWORK_PREFERENCE 129
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#define OGS_GTP1_CAUSE_NEW_PDP_TYPE_DUE_TO_SINGLE_ADDRESS_BEARER_ONLY 130
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/* 131-176 for future use */
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/* 177-191 reserved for GTP' */
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#define OGS_GTP1_CAUSE_NON_EXISTENT 192
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#define OGS_GTP1_CAUSE_INVALID_MESSAGE_FORMAT 193
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#define OGS_GTP1_CAUSE_IMSI_IMEI_NOT_KNOWN 194
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#define OGS_GTP1_CAUSE_MS_GPRS_DETACHED 195
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#define OGS_GTP1_CAUSE_REJ_MS_NOT_GPRS_RESPONDING 196
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#define OGS_GTP1_CAUSE_REJ_MS_REFUSES 197
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#define OGS_GTP1_CAUSE_VERSION_NOT_SUPPORTED 198
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#define OGS_GTP1_CAUSE_NO_RESOURCES_AVAILABLE 199
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#define OGS_GTP1_CAUSE_SERVICE_NOT_SUPPORTED 200
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#define OGS_GTP1_CAUSE_MANDATORY_IE_INCORRECT 201
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#define OGS_GTP1_CAUSE_MANDATORY_IE_MISSING 202
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#define OGS_GTP1_CAUSE_OPTIONAL_IE_INCORRECT 203
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#define OGS_GTP1_CAUSE_SYSTEM_FAILURE 204
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#define OGS_GTP1_CAUSE_ROAMING_RESTRICTION 205
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#define OGS_GTP1_CAUSE_P_TMSI_SIGNATURE_MISMATCH 206
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#define OGS_GTP1_CAUSE_GPRS_CONN_SUSPENDED 207
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#define OGS_GTP1_CAUSE_AUTHENTICATION_FAILURE 208
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#define OGS_GTP1_CAUSE_USER_AUTHENTICATION_FAILED 209
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#define OGS_GTP1_CAUSE_CONTEXT_NOT_FOUND 210
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#define OGS_GTP1_CAUSE_ALL_DYNAMIC_PDP_ADDRS_OCCUPIED 211
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#define OGS_GTP1_CAUSE_NO_MEMORY_AVAILABLE 212
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#define OGS_GTP1_CAUSE_RELOCATION_FAILURE 213
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#define OGS_GTP1_CAUSE_UNKNOWN_MANDATORY_EXTENSION_HEADER 214
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#define OGS_GTP1_CAUSE_SEMANTIC_ERR_TFT_OPERATION 215
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#define OGS_GTP1_CAUSE_SYNTATIC_ERR_TFT_OPERATION 216
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#define OGS_GTP1_CAUSE_SEMANTIC_ERR_PKT_FILTER 217
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#define OGS_GTP1_CAUSE_SYNTACTIC_ERR_PKT_FILTER 218
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#define OGS_GTP1_CAUSE_MISSING_OR_UNKNOWN_APN 219
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#define OGS_GTP1_CAUSE_UNKNWON_PDP_ADDR_OR_TYPE 220
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#define OGS_GTP1_CAUSE_PDP_CONTEXT_WITHOUT_TFT_ACTIVATED 221
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#define OGS_GTP1_CAUSE_APN_ACCESS_DENIED 222
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#define OGS_GTP1_CAUSE_APN_INCOMPATIBLE_WITH_ACTIVE_PDP_CONTEXTS 223
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#define OGS_GTP1_CAUSE_MS_MBMS_CAP_INSUFFICIENT 224
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#define OGS_GTP1_CAUSE_INVALID_CORRELATION_ID 225
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#define OGS_GTP1_CAUSE_MBMS_BEARER_CONTEXT_SUPERSEDED 226
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#define OGS_GTP1_CAUSE_BEARER_CONTROL_MODE_VIOLATION 227
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#define OGS_GTP1_CAUSE_COLLISION_WITH_NET_INITIATED_REQ 228
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#define OGS_GTP1_CAUSE_APN_CONGESTION 229
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#define OGS_GTP1_CAUSE_BEARER_HANDLING_NOT_SUPPORED 230
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#define OGS_GTP1_CAUSE_TGT_ACC_RESTRICTED_SUBSCRIBER 231
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#define OGS_GTP1_CAUSE_UE_TMP_NOT_REACHABLE_POWER_SAVING 232
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#define OGS_GTP1_CAUSE_RELOCATION_FAILURE_NAS_MSG_REDIR 233
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/* 234-240 for future use */
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/* 241-255 reserved for GTP' */
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/* TS 29.060 16.0.0 Table 39: Use of the Cause Values */
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#define OGS_GTP1_CAUSE_ACCEPT 0x80
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#define OGS_GTP1_CAUSE_REJECT 0xc0
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typedef struct ogs_gtp1_cause_s {
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uint8_t value;
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ED4(uint8_t spare:5;,
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uint8_t pce:1;,
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uint8_t bce:1;,
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uint8_t cs:1;)
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} __attribute__ ((packed)) ogs_gtp1_cause_t;
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/* TS 29.060 16.0.0 Table 7.7.50.1 RAT Type values */
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#define OGS_GTP1_RAT_TYPE_RESERVED 0
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#define OGS_GTP1_RAT_TYPE_UTRAN 1
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#define OGS_GTP1_RAT_TYPE_GERAN 2
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#define OGS_GTP1_RAT_TYPE_WLAN 3
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#define OGS_GTP1_RAT_TYPE_GAN 4
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#define OGS_GTP1_RAT_TYPE_HSPA_EVOLUTION 5
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#define OGS_GTP1_RAT_TYPE_EUTRAN 6
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/* 8.21 User Location Information (ULI) */
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#define OGS_GTP1_MAX_ULI_LEN sizeof(ogs_gtp1_uli_t)
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#define OGS_GTP1_GEO_LOC_TYPE_CGI 0
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#define OGS_GTP1_GEO_LOC_TYPE_SAI 1
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#define OGS_GTP1_GEO_LOC_TYPE_RAI 2
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typedef struct ogs_gtp1_uli_cgi_s {
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ogs_nas_plmn_id_t nas_plmn_id;
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uint16_t lac;
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uint16_t ci;
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} __attribute__ ((packed)) ogs_gtp1_uli_cgi_t;
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typedef struct ogs_gtp1_uli_sai_s {
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ogs_nas_plmn_id_t nas_plmn_id;
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uint16_t lac;
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uint16_t sac;
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} __attribute__ ((packed)) ogs_gtp1_uli_sai_t;
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typedef struct ogs_gtp1_uli_rai_s {
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ogs_nas_plmn_id_t nas_plmn_id;
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uint16_t lac;
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uint16_t rac;
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} __attribute__ ((packed)) ogs_gtp1_uli_rai_t;
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typedef struct ogs_gtp1_uli_s {
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uint8_t geo_loc_type;
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union {
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ogs_gtp1_uli_cgi_t cgi;
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ogs_gtp1_uli_sai_t sai;
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ogs_gtp1_uli_rai_t rai;
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};
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} ogs_gtp1_uli_t;
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int16_t ogs_gtp1_parse_uli(ogs_gtp1_uli_t *uli, ogs_tlv_octet_t *octet);
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int16_t ogs_gtp1_build_uli(ogs_tlv_octet_t *octet,
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ogs_gtp1_uli_t *uli, void *data, int data_len);
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#define OGS_GTP_GSN_ADDRESS_IPV4_LEN OGS_IPV4_LEN
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#define OGS_GTP_GSN_ADDRESS_IPV6_LEN OGS_IPV6_LEN
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typedef struct ogs_gtp1_gsn_addr_s {
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union {
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/* OGS_GTP2_F_TEID_IPV4 */
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uint32_t addr;
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/* OGS_GTP2_F_TEID_IPV6 */
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uint8_t addr6[OGS_IPV6_LEN];
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};
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} __attribute__ ((packed)) ogs_gtp1_gsn_addr_t;
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#ifdef __cplusplus
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}
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#endif
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/* TS 29.060 7.7.49 APN Restriction
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* TS 23.060 15.4 APN Restriction */
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#define OGS_GTP1_APN_NO_RESTRICTION 0
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#define OGS_GTP1_APN_RESTRICTION_PUBLIC_1 1
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#define OGS_GTP1_APN_RESTRICTION_PUBLIC_2 2
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#define OGS_GTP1_APN_RESTRICTION_PRIVATE_1 3
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#define OGS_GTP1_APN_RESTRICTION_PRIVATE_2 4
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/* TS 29.060 7.7.34 Quality of Service (QoS) Profile */
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#define OGS_GTP1_QOS_PROFILE_MAX_LEN 255
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/* TS 24.008 10.5.6.5 Quality of service */
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typedef struct ogs_gtp1_qos_profile_data_extended_bit_rate_s {
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uint8_t max_bit_rate_uplink;
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uint8_t guaranteed_bit_rate_uplink;
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uint8_t max_bit_rate_downlink;
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uint8_t guaranteed_bit_rate_downlink;
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} __attribute__ ((packed)) ogs_gtp1_qos_profile_data_extended_bit_rate_t;
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typedef struct ogs_gtp1_qos_profile_data_s {
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ED3(uint8_t spare1:2;,
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uint8_t delay_class:3;,
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uint8_t reliability_class:3;)
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ED3(uint8_t peak_throughput:4;,
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uint8_t spare2:1;,
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uint8_t precedence_class:3;)
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ED2(uint8_t spare3:3;,
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uint8_t mean_throughput:5;)
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ED3(uint8_t traffic_class:3;,
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uint8_t delivery_order:2;,
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uint8_t delivery_erroneous_sdu:3;)
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uint8_t max_sdu_size;
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uint8_t max_bit_rate_uplink;
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uint8_t max_bit_rate_downlink;
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ED2(uint8_t residual_ber:4;,
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uint8_t sdu_error_ratio:4;)
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ED2(uint8_t transfer_delay:6;,
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uint8_t traffic_handling_priority:2;)
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uint8_t guaranteed_bit_rate_uplink;
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uint8_t guaranteed_bit_rate_downlink;
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ED3(uint8_t spare4:3;,
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uint8_t signalling_indication:1;,
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uint8_t source_statistics_descriptor:4;)
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ogs_gtp1_qos_profile_data_extended_bit_rate_t extended;
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ogs_gtp1_qos_profile_data_extended_bit_rate_t extended2;
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} __attribute__ ((packed)) ogs_gtp1_qos_profile_data_t;
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typedef struct ogs_gtp1_qos_profile_s {
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uint8_t arp;
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ogs_gtp1_qos_profile_data_t data;
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} __attribute__ ((packed)) ogs_gtp1_qos_profile_t;
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typedef struct ogs_gtp1_qos_profile_decoded_s {
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ogs_gtp1_qos_profile_t qos_profile;
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/* Filled in by the decoder function: */
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bool data_octet6_to_13_present; /* from traffic_class to guaranteed_bit_rate_downlink */
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bool data_octet14_present; /* byte containing signalling_indication */
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bool bit_rate_downlink_extended_present;
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bool bit_rate_uplink_extended_present;
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bool bit_rate_downlink_extended2_present;
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bool bit_rate_uplink_extended2_present;
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uint16_t dec_transfer_delay;
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uint32_t dec_mbr_kbps_dl; /* decoded MBR in kbps */
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uint32_t dec_mbr_kbps_ul; /* decoded MBR in kbps */
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uint32_t dec_gbr_kbps_dl; /* decoded GBR in kbps */
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uint32_t dec_gbr_kbps_ul; /* decoded GBR in kbps */
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} __attribute__ ((packed)) ogs_gtp1_qos_profile_decoded_t;
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#define OGS_GTP1_QOS_TRAFFIC_CLASS_SUBSCRIBED 0
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#define OGS_GTP1_QOS_TRAFFIC_CLASS_CONVERSATIONAL 1
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#define OGS_GTP1_QOS_TRAFFIC_CLASS_STREAMING 2
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#define OGS_GTP1_QOS_TRAFFIC_CLASS_INTERACTIVE 3
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#define OGS_GTP1_QOS_TRAFFIC_CLASS_BACKGROUND 4
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#define OGS_GTP1_QOS_SRC_STATS_DESC_UNKNOWN 0
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#define OGS_GTP1_QOS_SRC_STATS_DESC_SPEECH 1
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/* 7.7.48 Common Flags */
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typedef struct ogs_gtp1_common_flags_s {
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ED8(uint8_t dual_address_bearer_flag:1;,
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uint8_t upgrade_qos_supported:1;,
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uint8_t nrsn:1;,
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uint8_t no_qos_negotiation:1;,
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uint8_t mbms_counting_information:1;,
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uint8_t ran_procedures_ready:1;,
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uint8_t mbms_service_type:1;,
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uint8_t prohibit_payload_compression:1;)
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} __attribute__ ((packed)) ogs_gtp1_common_flags_t;
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/* 7.7.98 APN Aggregate Maximum Bit Rate (APN-AMBR) */
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typedef struct ogs_gtp1_apn_ambr_s {
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uint32_t uplink;
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uint32_t downlink;
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} __attribute__ ((packed)) ogs_gtp1_apn_ambr_t;
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int16_t ogs_gtp1_parse_qos_profile(
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ogs_gtp1_qos_profile_decoded_t *decoded, const ogs_tlv_octet_t *octet);
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int16_t ogs_gtp1_build_qos_profile(ogs_tlv_octet_t *octet,
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const ogs_gtp1_qos_profile_decoded_t *decoded, void *data, int data_len);
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/* 7.7.7 Authentication Triplet. FIXME: Not used in MME Gn scenario? */
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# if 0
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struct ogs_gtp1_auth_triplet_s {
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uint8_t rand[16];
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uint8_t sres[4];
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uint8_t kc[8];
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} __attribute__ ((packed)) ogs_gtp1_auth_triplet_t;
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#endif
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/* 7.7.35 Authentication Quintuplet */
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typedef struct ogs_gtp1_auth_quintuplet_s {
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uint8_t rand[OGS_RAND_LEN];
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uint8_t xres_len;
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uint8_t xres[OGS_MAX_RES_LEN];
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uint8_t ck[128/8];
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uint8_t ik[128/8];
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uint8_t autn_len;
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uint8_t autn[OGS_AUTN_LEN];
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} ogs_gtp1_auth_quintuplet_t;
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/* TS 24.008 10.5.5.6 DRX parameter (value part only) */
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typedef struct ogs_gtp1_drx_param_val_s {
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uint8_t split_pg_cycle_code; /* 0 = equivalent to no DRX */
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ED3(uint8_t cn_drx_cycle_len_coeff:4;,
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uint8_t split_on_ccch:1;,
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uint8_t non_drx_timer:3;)
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} __attribute__ ((packed)) ogs_gtp1_drx_param_val_t;
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/* 7.7.28 MM Context (Figure 41) */
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/* Table 47: Security Mode Values */
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#define OGS_GTP1_SEC_MODE_GSM_KEY_AND_TRIPLETS 1
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#define OGS_GTP1_SEC_MODE_GSM_KEY_AND_QUINTUPLETS 3
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#define OGS_GTP1_SEC_MODE_UMTS_KEY_AND_QUINTUPLETS 2
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#define OGS_GTP1_SEC_MODE_USED_CIPHER_VALUE_UMTS_KEY_AND_QUINTUPLETS 0
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/* Table 47B: Used GPRS integrity protection algorithm Values */
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#define OGS_GTP1_USED_GPRS_IP_NO_IP 0
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#define OGS_GTP1_USED_GPRS_IP_GIA4 4
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#define OGS_GTP1_USED_GPRS_IP_GIA5 5
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typedef struct ogs_gtp1_mm_context_decoded_s {
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uint8_t gupii:1;
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uint8_t ugipai:1;
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uint8_t used_gprs_protection_algo:3; /* OGS_GTP1_USED_GPRS_IP */
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uint8_t ksi:3;
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uint8_t sec_mode:2; /* OGS_GTP1_SEC_MODE_* */
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uint8_t num_vectors:3;
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uint8_t used_cipher:3; /* 0..7 -> GEA/... */
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uint8_t ck[OGS_SHA256_DIGEST_SIZE/2];
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uint8_t ik[OGS_SHA256_DIGEST_SIZE/2];
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ogs_gtp1_auth_quintuplet_t auth_quintuplets[5];
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ogs_gtp1_drx_param_val_t drx_param;
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uint8_t ms_network_capability_len;
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uint8_t ms_network_capability[6]; /* ogs_nas_ms_network_capability_t */
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uint8_t imeisv_len;
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uint8_t imeisv[10]; /* ogs_nas_mobile_identity_imeisv_t */
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uint8_t nrsrna;
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} ogs_gtp1_mm_context_decoded_t;
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int ogs_gtp1_build_mm_context(ogs_gtp1_tlv_mm_context_t *octet,
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const ogs_gtp1_mm_context_decoded_t *decoded, uint8_t *data, int data_len);
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/* Extended End User Address. Not explicitly defined in a table: */
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#define OGS_GTP1_PDPCTX_EXT_EUA_NO 0
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#define OGS_GTP1_PDPCTX_EXT_EUA_YES 1
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/* 7.7.29 Table 48 Reordering Required Values */
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#define OGS_GTP1_PDPCTX_REORDERING_REQUIRED_NO 0
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#define OGS_GTP1_PDPCTX_REORDERING_REQUIRED_YES 1
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/* 7.7.29 Table 49 VPLMN Address Allowed Values */
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#define OGS_GTP1_PDPCTX_VLPMN_ADDR_ALLOWED_NO 0
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#define OGS_GTP1_PDPCTX_VLPMN_ADDR_ALLOWED_YES 1
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/* 7.7.29 Table 49A Activity Status Indicator Value */
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#define OGS_GTP1_PDPCTX_ACTIVITY_STATUS_IND_YES 0
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#define OGS_GTP1_PDPCTX_ACTIVITY_STATUS_IND_NO 1
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/* 7.7.29 PDP Context */
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typedef struct ogs_gtp1_pdp_context_decoded_s {
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uint8_t ea:1; /* OGS_GTP1_PDPCTX_EXT_EUA_* */
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uint8_t vaa:1; /* OGS_GTP1_PDPCTX_VLPMN_ADDR_ALLOWED_* */
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uint8_t asi:1; /* OGS_GTP1_PDPCTX_ACTIVITY_STATUS_IND_* */
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uint8_t order:1; /* OGS_GTP1_PDPCTX_REORDERING_REQUIRED_* */
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uint8_t nsapi:4;
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uint8_t sapi:4;
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ogs_gtp1_qos_profile_decoded_t qos_sub;
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ogs_gtp1_qos_profile_decoded_t qos_req;
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ogs_gtp1_qos_profile_decoded_t qos_neg;
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uint16_t snd;
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uint16_t snu;
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uint8_t send_npdu_nr;
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uint8_t receive_npdu_nr;
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uint32_t ul_teic;
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uint32_t ul_teid;
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uint8_t pdp_ctx_id;
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uint8_t pdp_type_org;
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uint8_t pdp_type_num[2];
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ogs_ip_t pdp_address[2];
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ogs_ip_t ggsn_address_c;
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ogs_ip_t ggsn_address_u;
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char apn[OGS_MAX_APN_LEN+1];
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uint16_t trans_id:12;
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} ogs_gtp1_pdp_context_decoded_t;
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int ogs_gtp1_build_pdp_context(ogs_gtp1_tlv_pdp_context_t *octet,
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const ogs_gtp1_pdp_context_decoded_t *decoded, uint8_t *data, int data_len);
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#endif /* OGS_GTP1_TYPES_H */
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