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Create ngap files

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This commit is contained in:
zhenghuangkun
2020-09-04 18:00:03 +09:00
parent 0a375bc044
commit fe4b3c0a21
32 changed files with 7754 additions and 2 deletions
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common/utils/LOG/log.h
+1
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@@ -226,6 +226,7 @@ typedef enum {
X2AP, X2AP,
M2AP, M2AP,
M3AP, M3AP,
NGAP,
GNB_APP, GNB_APP,
NR_RRC, NR_RRC,
NR_MAC, NR_MAC,
openair2/COMMON/ngap_messages_def.h
+82
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@@ -0,0 +1,82 @@
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/* Messages for NGAP logging */
MESSAGE_DEF(NGAP_UPLINK_NAS_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_uplink_nas_log)
MESSAGE_DEF(NGAP_UE_CAPABILITY_IND_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_ue_capability_ind_log)
MESSAGE_DEF(NGAP_INITIAL_CONTEXT_SETUP_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_initial_context_setup_log)
MESSAGE_DEF(NGAP_NAS_NON_DELIVERY_IND_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_nas_non_delivery_ind_log)
MESSAGE_DEF(NGAP_DOWNLINK_NAS_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_downlink_nas_log)
MESSAGE_DEF(NGAP_S1_SETUP_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_s1_setup_log)
MESSAGE_DEF(NGAP_INITIAL_UE_MESSAGE_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_initial_ue_message_log)
MESSAGE_DEF(NGAP_UE_CONTEXT_RELEASE_REQ_LOG, MESSAGE_PRIORITY_MED, IttiMsgText , ngap_ue_context_release_req_log)
MESSAGE_DEF(NGAP_UE_CONTEXT_RELEASE_COMMAND_LOG, MESSAGE_PRIORITY_MED, IttiMsgText , ngap_ue_context_release_command_log)
MESSAGE_DEF(NGAP_UE_CONTEXT_RELEASE_COMPLETE_LOG, MESSAGE_PRIORITY_MED, IttiMsgText , ngap_ue_context_release_complete_log)
MESSAGE_DEF(NGAP_UE_CONTEXT_RELEASE_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_ue_context_release_log)
MESSAGE_DEF(NGAP_E_RAB_SETUP_REQUEST_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_e_rab_setup_request_log)
MESSAGE_DEF(NGAP_E_RAB_SETUP_RESPONSE_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_e_rab_setup_response_log)
MESSAGE_DEF(NGAP_E_RAB_MODIFY_REQUEST_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_e_rab_modify_request_log)
MESSAGE_DEF(NGAP_E_RAB_MODIFY_RESPONSE_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_e_rab_modify_response_log)
MESSAGE_DEF(NGAP_PAGING_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_paging_log)
MESSAGE_DEF(NGAP_E_RAB_RELEASE_REQUEST_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_e_rab_release_request_log)
MESSAGE_DEF(NGAP_E_RAB_RELEASE_RESPONSE_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_e_rab_release_response_log)
MESSAGE_DEF(NGAP_ERROR_INDICATION_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_error_indication_log)
MESSAGE_DEF(NGAP_PATH_SWITCH_REQ_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_path_switch_req_log)
MESSAGE_DEF(NGAP_PATH_SWITCH_REQ_ACK_LOG , MESSAGE_PRIORITY_MED, IttiMsgText , ngap_path_switch_req_ack_log)
/* gNB application layer -> NGAP messages */
MESSAGE_DEF(NGAP_REGISTER_GNB_REQ , MESSAGE_PRIORITY_MED, ngap_register_enb_req_t , ngap_register_enb_req)
/* NGAP -> gNB application layer messages */
MESSAGE_DEF(NGAP_REGISTER_GNB_CNF , MESSAGE_PRIORITY_MED, ngap_register_enb_cnf_t , ngap_register_enb_cnf)
MESSAGE_DEF(NGAP_DEREGISTERED_GNB_IND , MESSAGE_PRIORITY_MED, ngap_deregistered_enb_ind_t , ngap_deregistered_enb_ind)
/* RRC -> NGAP messages */
MESSAGE_DEF(NGAP_NAS_FIRST_REQ , MESSAGE_PRIORITY_MED, ngap_nas_first_req_t , ngap_nas_first_req)
MESSAGE_DEF(NGAP_UPLINK_NAS , MESSAGE_PRIORITY_MED, ngap_uplink_nas_t , ngap_uplink_nas)
MESSAGE_DEF(NGAP_UE_CAPABILITIES_IND , MESSAGE_PRIORITY_MED, ngap_ue_cap_info_ind_t , ngap_ue_cap_info_ind)
MESSAGE_DEF(NGAP_INITIAL_CONTEXT_SETUP_RESP, MESSAGE_PRIORITY_MED, ngap_initial_context_setup_resp_t, ngap_initial_context_setup_resp)
MESSAGE_DEF(NGAP_INITIAL_CONTEXT_SETUP_FAIL, MESSAGE_PRIORITY_MED, ngap_initial_context_setup_fail_t, ngap_initial_context_setup_fail)
MESSAGE_DEF(NGAP_NAS_NON_DELIVERY_IND , MESSAGE_PRIORITY_MED, ngap_nas_non_delivery_ind_t , ngap_nas_non_delivery_ind)
MESSAGE_DEF(NGAP_UE_CONTEXT_RELEASE_RESP , MESSAGE_PRIORITY_MED, ngap_ue_release_resp_t , ngap_ue_release_resp)
MESSAGE_DEF(NGAP_UE_CONTEXT_RELEASE_COMPLETE, MESSAGE_PRIORITY_MED, ngap_ue_release_complete_t , ngap_ue_release_complete)
MESSAGE_DEF(NGAP_UE_CTXT_MODIFICATION_RESP , MESSAGE_PRIORITY_MED, ngap_ue_ctxt_modification_resp_t , ngap_ue_ctxt_modification_resp)
MESSAGE_DEF(NGAP_UE_CTXT_MODIFICATION_FAIL , MESSAGE_PRIORITY_MED, ngap_ue_ctxt_modification_fail_t , ngap_ue_ctxt_modification_fail)
MESSAGE_DEF(NGAP_E_RAB_SETUP_RESP , MESSAGE_PRIORITY_MED, ngap_e_rab_setup_resp_t , ngap_e_rab_setup_resp)
MESSAGE_DEF(NGAP_E_RAB_SETUP_REQUEST_FAIL , MESSAGE_PRIORITY_MED, ngap_e_rab_setup_req_fail_t , ngap_e_rab_setup_request_fail)
MESSAGE_DEF(NGAP_E_RAB_MODIFY_RESP , MESSAGE_PRIORITY_MED, ngap_e_rab_modify_resp_t , ngap_e_rab_modify_resp)
MESSAGE_DEF(NGAP_E_RAB_RELEASE_RESPONSE , MESSAGE_PRIORITY_MED, ngap_e_rab_release_resp_t , ngap_e_rab_release_resp)
MESSAGE_DEF(NGAP_PATH_SWITCH_REQ , MESSAGE_PRIORITY_MED, ngap_path_switch_req_t , ngap_path_switch_req)
MESSAGE_DEF(NGAP_PATH_SWITCH_REQ_ACK , MESSAGE_PRIORITY_MED, ngap_path_switch_req_ack_t , ngap_path_switch_req_ack)
MESSAGE_DEF(NGAP_E_RAB_MODIFICATION_IND , MESSAGE_PRIORITY_MED, ngap_e_rab_modification_ind_t , ngap_e_rab_modification_ind)
/* NGAP -> RRC messages */
MESSAGE_DEF(NGAP_DOWNLINK_NAS , MESSAGE_PRIORITY_MED, ngap_downlink_nas_t , ngap_downlink_nas )
MESSAGE_DEF(NGAP_INITIAL_CONTEXT_SETUP_REQ , MESSAGE_PRIORITY_MED, ngap_initial_context_setup_req_t , ngap_initial_context_setup_req )
MESSAGE_DEF(NGAP_UE_CTXT_MODIFICATION_REQ , MESSAGE_PRIORITY_MED, ngap_ue_ctxt_modification_req_t , ngap_ue_ctxt_modification_req)
MESSAGE_DEF(NGAP_PAGING_IND , MESSAGE_PRIORITY_MED, ngap_paging_ind_t , ngap_paging_ind )
MESSAGE_DEF(NGAP_E_RAB_SETUP_REQ , MESSAGE_PRIORITY_MED, ngap_e_rab_setup_req_t , ngap_e_rab_setup_req )
MESSAGE_DEF(NGAP_E_RAB_MODIFY_REQ , MESSAGE_PRIORITY_MED, ngap_e_rab_modify_req_t , ngap_e_rab_modify_req )
MESSAGE_DEF(NGAP_E_RAB_RELEASE_COMMAND , MESSAGE_PRIORITY_MED, ngap_e_rab_release_command_t , ngap_e_rab_release_command)
MESSAGE_DEF(NGAP_UE_CONTEXT_RELEASE_COMMAND, MESSAGE_PRIORITY_MED, ngap_ue_release_command_t , ngap_ue_release_command)
/* NGAP <-> RRC messages (can be initiated either by MME or gNB) */
MESSAGE_DEF(NGAP_UE_CONTEXT_RELEASE_REQ , MESSAGE_PRIORITY_MED, ngap_ue_release_req_t , ngap_ue_release_req)
openair2/COMMON/ngap_messages_types.h
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@@ -0,0 +1,771 @@
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_MESSAGES_TYPES_H_
#define NGAP_MESSAGES_TYPES_H_
#include "LTE_asn_constant.h"
//-------------------------------------------------------------------------------------------//
// Defines to access message fields.
#define NGAP_REGISTER_GNB_REQ(mSGpTR) (mSGpTR)->ittiMsg.ngap_register_enb_req
#define NGAP_REGISTER_GNB_CNF(mSGpTR) (mSGpTR)->ittiMsg.ngap_register_enb_cnf
#define NGAP_DEREGISTERED_GNB_IND(mSGpTR) (mSGpTR)->ittiMsg.ngap_deregistered_enb_ind
#define NGAP_NAS_FIRST_REQ(mSGpTR) (mSGpTR)->ittiMsg.ngap_nas_first_req
#define NGAP_UPLINK_NAS(mSGpTR) (mSGpTR)->ittiMsg.ngap_uplink_nas
#define NGAP_UE_CAPABILITIES_IND(mSGpTR) (mSGpTR)->ittiMsg.ngap_ue_cap_info_ind
#define NGAP_INITIAL_CONTEXT_SETUP_RESP(mSGpTR) (mSGpTR)->ittiMsg.ngap_initial_context_setup_resp
#define NGAP_INITIAL_CONTEXT_SETUP_FAIL(mSGpTR) (mSGpTR)->ittiMsg.ngap_initial_context_setup_fail
#define NGAP_UE_CONTEXT_RELEASE_RESP(mSGpTR) (mSGpTR)->ittiMsg.ngap_ue_release_resp
#define NGAP_NAS_NON_DELIVERY_IND(mSGpTR) (mSGpTR)->ittiMsg.ngap_nas_non_delivery_ind
#define NGAP_UE_CTXT_MODIFICATION_RESP(mSGpTR) (mSGpTR)->ittiMsg.ngap_ue_ctxt_modification_resp
#define NGAP_UE_CTXT_MODIFICATION_FAIL(mSGpTR) (mSGpTR)->ittiMsg.ngap_ue_ctxt_modification_fail
#define NGAP_E_RAB_SETUP_RESP(mSGpTR) (mSGpTR)->ittiMsg.ngap_e_rab_setup_resp
#define NGAP_E_RAB_SETUP_FAIL(mSGpTR) (mSGpTR)->ittiMsg.ngap_e_rab_setup_req_fail
#define NGAP_E_RAB_MODIFY_RESP(mSGpTR) (mSGpTR)->ittiMsg.ngap_e_rab_modify_resp
#define NGAP_PATH_SWITCH_REQ(mSGpTR) (mSGpTR)->ittiMsg.ngap_path_switch_req
#define NGAP_PATH_SWITCH_REQ_ACK(mSGpTR) (mSGpTR)->ittiMsg.ngap_path_switch_req_ack
#define NGAP_E_RAB_MODIFICATION_IND(mSGpTR) (mSGpTR)->ittiMsg.ngap_e_rab_modification_ind
#define NGAP_DOWNLINK_NAS(mSGpTR) (mSGpTR)->ittiMsg.ngap_downlink_nas
#define NGAP_INITIAL_CONTEXT_SETUP_REQ(mSGpTR) (mSGpTR)->ittiMsg.ngap_initial_context_setup_req
#define NGAP_UE_CTXT_MODIFICATION_REQ(mSGpTR) (mSGpTR)->ittiMsg.ngap_ue_ctxt_modification_req
#define NGAP_UE_CONTEXT_RELEASE_COMMAND(mSGpTR) (mSGpTR)->ittiMsg.ngap_ue_release_command
#define NGAP_UE_CONTEXT_RELEASE_COMPLETE(mSGpTR) (mSGpTR)->ittiMsg.ngap_ue_release_complete
#define NGAP_E_RAB_SETUP_REQ(mSGpTR) (mSGpTR)->ittiMsg.ngap_e_rab_setup_req
#define NGAP_E_RAB_MODIFY_REQ(mSGpTR) (mSGpTR)->ittiMsg.ngap_e_rab_modify_req
#define NGAP_PAGING_IND(mSGpTR) (mSGpTR)->ittiMsg.ngap_paging_ind
#define NGAP_UE_CONTEXT_RELEASE_REQ(mSGpTR) (mSGpTR)->ittiMsg.ngap_ue_release_req
#define NGAP_E_RAB_RELEASE_COMMAND(mSGpTR) (mSGpTR)->ittiMsg.ngap_e_rab_release_command
#define NGAP_E_RAB_RELEASE_RESPONSE(mSGpTR) (mSGpTR)->ittiMsg.ngap_e_rab_release_resp
//-------------------------------------------------------------------------------------------//
/* Maximum number of e-rabs to be setup/deleted in a single message.
* Even if only one bearer will be modified by message.
*/
#define NGAP_MAX_E_RAB (LTE_maxDRB + 3)
/* Length of the transport layer address string
* 160 bits / 8 bits by char.
*/
#define NGAP_TRANSPORT_LAYER_ADDRESS_SIZE (160 / 8)
#define NGAP_MAX_NB_MME_IP_ADDRESS 10
#define NGAP_IMSI_LENGTH 16
/* Security key length used within gNB
* Even if only 16 bytes will be effectively used,
* the key length is 32 bytes (256 bits)
*/
#define SECURITY_KEY_LENGTH 32
typedef enum cell_type_e {
CELL_MACRO_GNB,
CELL_HOME_GNB,
CELL_MACRO_GNB
} cell_type_t;
typedef enum paging_drx_e {
PAGING_DRX_32 = 0x0,
PAGING_DRX_64 = 0x1,
PAGING_DRX_128 = 0x2,
PAGING_DRX_256 = 0x3
} paging_drx_t;
/* Lower value codepoint
* indicates higher priority.
*/
typedef enum paging_priority_s {
PAGING_PRIO_LEVEL1 = 0,
PAGING_PRIO_LEVEL2 = 1,
PAGING_PRIO_LEVEL3 = 2,
PAGING_PRIO_LEVEL4 = 3,
PAGING_PRIO_LEVEL5 = 4,
PAGING_PRIO_LEVEL6 = 5,
PAGING_PRIO_LEVEL7 = 6,
PAGING_PRIO_LEVEL8 = 7
} paging_priority_t;
typedef enum cn_domain_s {
CN_DOMAIN_PS = 1,
CN_DOMAIN_CS = 2
} cn_domain_t;
typedef struct net_ip_address_s {
unsigned ipv4:1;
unsigned ipv6:1;
char ipv4_address[16];
char ipv6_address[46];
} net_ip_address_t;
typedef uint64_t bitrate_t;
typedef struct ambr_s {
bitrate_t br_ul;
bitrate_t br_dl;
} ambr_t;
typedef enum priority_level_s {
PRIORITY_LEVEL_SPARE = 0,
PRIORITY_LEVEL_HIGHEST = 1,
PRIORITY_LEVEL_LOWEST = 14,
PRIORITY_LEVEL_NO_PRIORITY = 15
} priority_level_t;
typedef enum pre_emp_capability_e {
PRE_EMPTION_CAPABILITY_ENABLED = 0,
PRE_EMPTION_CAPABILITY_DISABLED = 1,
PRE_EMPTION_CAPABILITY_MAX,
} pre_emp_capability_t;
typedef enum pre_emp_vulnerability_e {
PRE_EMPTION_VULNERABILITY_ENABLED = 0,
PRE_EMPTION_VULNERABILITY_DISABLED = 1,
PRE_EMPTION_VULNERABILITY_MAX,
} pre_emp_vulnerability_t;
typedef struct allocation_retention_priority_s {
priority_level_t priority_level;
pre_emp_capability_t pre_emp_capability;
pre_emp_vulnerability_t pre_emp_vulnerability;
} allocation_retention_priority_t;
typedef struct security_capabilities_s {
uint16_t encryption_algorithms;
uint16_t integrity_algorithms;
} security_capabilities_t;
/* Provides the establishment cause for the RRC connection request as provided
* by the upper layers. W.r.t. the cause value names: highPriorityAccess
* concerns AC11..AC15, ‘mt’ stands for ‘Mobile Terminating’ and ‘mo’ for
* 'Mobile Originating'. Defined in TS 36.331.
*/
typedef enum rrc_establishment_cause_e {
RRC_CAUSE_EMERGENCY = 0x0,
RRC_CAUSE_HIGH_PRIO_ACCESS = 0x1,
RRC_CAUSE_MT_ACCESS = 0x2,
RRC_CAUSE_MO_SIGNALLING = 0x3,
RRC_CAUSE_MO_DATA = 0x4,
#if defined(UPDATE_RELEASE_10)
RRC_CAUSE_DELAY_TOLERANT_ACCESS = 0x5,
#endif
RRC_CAUSE_LAST
} rrc_establishment_cause_t;
typedef struct ngap_gummei_s {
uint16_t mcc;
uint16_t mnc;
uint8_t mnc_len;
uint8_t mme_code;
uint16_t mme_group_id;
} ngap_gummei_t;
typedef struct ngap_imsi_s {
uint8_t buffer[NGAP_IMSI_LENGTH];
uint8_t length;
} ngap_imsi_t;
typedef struct s_tmsi_s {
uint8_t mme_code;
uint32_t m_tmsi;
} s_tmsi_t;
typedef enum ue_paging_identity_presenceMask_e {
UE_PAGING_IDENTITY_NONE = 0,
UE_PAGING_IDENTITY_imsi = (1 << 1),
UE_PAGING_IDENTITY_s_tmsi = (1 << 2),
} ue_paging_identity_presenceMask_t;
typedef struct ue_paging_identity_s {
ue_paging_identity_presenceMask_t presenceMask;
union {
ngap_imsi_t imsi;
s_tmsi_t s_tmsi;
} choice;
} ue_paging_identity_t;
typedef enum ue_identities_presenceMask_e {
UE_IDENTITIES_NONE = 0,
UE_IDENTITIES_s_tmsi = 1 << 1,
UE_IDENTITIES_gummei = 1 << 2,
} ue_identities_presenceMask_t;
typedef struct ue_identity_s {
ue_identities_presenceMask_t presenceMask;
s_tmsi_t s_tmsi;
ngap_gummei_t gummei;
} ue_identity_t;
typedef struct nas_pdu_s {
/* Octet string data */
uint8_t *buffer;
/* Length of the octet string */
uint32_t length;
} nas_pdu_t, ue_radio_cap_t;
typedef struct transport_layer_addr_s {
/* Length of the transport layer address buffer in bits. NGAP layer received a
* bit string<1..160> containing one of the following addresses: ipv4,
* ipv6, or ipv4 and ipv6. The layer doesn't interpret the buffer but
* silently forward it to S1-U.
*/
uint8_t length;
uint8_t buffer[20]; // in network byte order
} transport_layer_addr_t;
#define TRANSPORT_LAYER_ADDR_COPY(dEST,sOURCE) \
do { \
AssertFatal(sOURCE.len <= 20); \
memcpy(dEST.buffer, sOURCE.buffer, sOURCE.len); \
dEST.length = sOURCE.length; \
} while (0)
typedef struct e_rab_level_qos_parameter_s {
uint8_t qci;
allocation_retention_priority_t allocation_retention_priority;
} e_rab_level_qos_parameter_t;
typedef struct e_rab_s {
/* Unique e_rab_id for the UE. */
uint8_t e_rab_id;
/* Quality of service for this e_rab */
e_rab_level_qos_parameter_t qos;
/* The NAS PDU should be forwarded by the RRC layer to the NAS layer */
nas_pdu_t nas_pdu;
/* The transport layer address for the IP packets */
transport_layer_addr_t sgw_addr;
/* S-GW Tunnel endpoint identifier */
uint32_t gtp_teid;
} e_rab_t;
typedef struct e_rab_setup_s {
/* Unique e_rab_id for the UE. */
uint8_t e_rab_id;
/* The transport layer address for the IP packets */
transport_layer_addr_t gNB_addr;
/* S-GW Tunnel endpoint identifier */
uint32_t gtp_teid;
} e_rab_setup_t;
typedef struct e_rab_tobe_added_s {
/* Unique e_rab_id for the UE. */
uint8_t e_rab_id;
/* Unique drb_ID for the UE. */
uint8_t drb_ID;
/* The transport layer address for the IP packets */
transport_layer_addr_t sgw_addr;
/* S-GW Tunnel endpoint identifier */
uint32_t gtp_teid;
} e_rab_tobe_added_t;
typedef struct e_rab_admitted_tobe_added_s {
/* Unique e_rab_id for the UE. */
uint8_t e_rab_id;
/* Unique drb_ID for the UE. */
uint8_t drb_ID;
/* The transport layer address for the IP packets */
transport_layer_addr_t gnb_addr;
/* S-GW Tunnel endpoint identifier */
uint32_t gtp_teid;
} e_rab_admitted_tobe_added_t;
typedef struct e_rab_tobeswitched_s {
/* Unique e_rab_id for the UE. */
uint8_t e_rab_id;
/* The transport layer address for the IP packets */
transport_layer_addr_t sgw_addr;
/* S-GW Tunnel endpoint identifier */
uint32_t gtp_teid;
} e_rab_tobeswitched_t;
typedef struct e_rab_modify_s {
/* Unique e_rab_id for the UE. */
uint8_t e_rab_id;
} e_rab_modify_t;
typedef enum S1ap_Cause_e {
NGAP_CAUSE_NOTHING, /* No components present */
NGAP_CAUSE_RADIO_NETWORK,
NGAP_CAUSE_TRANSPORT,
NGAP_CAUSE_NAS,
NGAP_CAUSE_PROTOCOL,
NGAP_CAUSE_MISC,
/* Extensions may appear below */
} ngap_Cause_t;
typedef struct e_rab_failed_s {
/* Unique e_rab_id for the UE. */
uint8_t e_rab_id;
/* Cause of the failure */
// cause_t cause;
ngap_Cause_t cause;
uint8_t cause_value;
} e_rab_failed_t;
typedef enum ngap_ue_ctxt_modification_present_s {
NGAP_UE_CONTEXT_MODIFICATION_SECURITY_KEY = (1 << 0),
NGAP_UE_CONTEXT_MODIFICATION_UE_AMBR = (1 << 1),
NGAP_UE_CONTEXT_MODIFICATION_UE_SECU_CAP = (1 << 2),
} ngap_ue_ctxt_modification_present_t;
typedef enum ngap_paging_ind_present_s {
NGAP_PAGING_IND_PAGING_DRX = (1 << 0),
NGAP_PAGING_IND_PAGING_PRIORITY = (1 << 1),
} ngap_paging_ind_present_t;
//-------------------------------------------------------------------------------------------//
// gNB application layer -> NGAP messages
typedef struct ngap_register_enb_req_s {
/* Unique gNB_id to identify the gNB within EPC.
* For macro gNB ids this field should be 20 bits long.
* For home gNB ids this field should be 28 bits long.
*/
uint32_t gNB_id;
/* The type of the cell */
enum cell_type_e cell_type;
/* Optional name for the cell
* NOTE: the name can be NULL (i.e no name) and will be cropped to 150
* characters.
*/
char *gNB_name;
/* Tracking area code */
uint16_t tac;
#define PLMN_LIST_MAX_SIZE 6
/* Mobile Country Code
* Mobile Network Code
*/
uint16_t mcc[PLMN_LIST_MAX_SIZE];
uint16_t mnc[PLMN_LIST_MAX_SIZE];
uint8_t mnc_digit_length[PLMN_LIST_MAX_SIZE];
uint8_t num_plmn;
/* Default Paging DRX of the gNB as defined in TS 36.304 */
paging_drx_t default_drx;
/* The gNB IP address to bind */
net_ip_address_t enb_ip_address;
/* Nb of MME to connect to */
uint8_t nb_mme;
/* List of MME to connect to */
net_ip_address_t mme_ip_address[NGAP_MAX_NB_MME_IP_ADDRESS];
uint8_t broadcast_plmn_num[NGAP_MAX_NB_MME_IP_ADDRESS];
uint8_t broadcast_plmn_index[NGAP_MAX_NB_MME_IP_ADDRESS][PLMN_LIST_MAX_SIZE];
/* Number of SCTP streams used for a mme association */
uint16_t sctp_in_streams;
uint16_t sctp_out_streams;
} ngap_register_enb_req_t;
//-------------------------------------------------------------------------------------------//
// NGAP -> gNB application layer messages
typedef struct ngap_register_enb_cnf_s {
/* Nb of MME connected */
uint8_t nb_mme;
} ngap_register_enb_cnf_t;
typedef struct ngap_deregistered_enb_ind_s {
/* Nb of MME connected */
uint8_t nb_mme;
} ngap_deregistered_enb_ind_t;
//-------------------------------------------------------------------------------------------//
// RRC -> NGAP messages
/* The NAS First Req is the first message exchanged between RRC and NGAP
* for an UE.
* The rnti uniquely identifies an UE within a cell. Later the enb_ue_ngap_id
* will be the unique identifier used between RRC and NGAP.
*/
typedef struct ngap_nas_first_req_s {
/* UE id for initial connection to NGAP */
uint16_t ue_initial_id;
/* the chosen PLMN identity as index, see TS 36.331 6.2.2 RRC Connection
* Setup Complete. This index here is zero-based, unlike the standard! */
int selected_plmn_identity;
/* Establishment cause as sent by UE */
rrc_establishment_cause_t establishment_cause;
/* NAS PDU */
nas_pdu_t nas_pdu;
/* If this flag is set NGAP layer is expecting the GUMMEI. If = 0,
* the temporary s-tmsi is used.
*/
ue_identity_t ue_identity;
} ngap_nas_first_req_t;
typedef struct ngap_uplink_nas_s {
/* Unique UE identifier within an gNB */
unsigned gNB_ue_ngap_id:24;
/* NAS pdu */
nas_pdu_t nas_pdu;
} ngap_uplink_nas_t;
typedef struct ngap_ue_cap_info_ind_s {
unsigned gNB_ue_ngap_id:24;
ue_radio_cap_t ue_radio_cap;
} ngap_ue_cap_info_ind_t;
typedef struct ngap_initial_context_setup_resp_s {
unsigned gNB_ue_ngap_id:24;
/* Number of e_rab setup-ed in the list */
uint8_t nb_of_e_rabs;
/* list of e_rab setup-ed by RRC layers */
e_rab_setup_t e_rabs[NGAP_MAX_E_RAB];
/* Number of e_rab failed to be setup in list */
uint8_t nb_of_e_rabs_failed;
/* list of e_rabs that failed to be setup */
e_rab_failed_t e_rabs_failed[NGAP_MAX_E_RAB];
} ngap_initial_context_setup_resp_t;
typedef struct ngap_initial_context_setup_fail_s {
unsigned gNB_ue_ngap_id:24;
/* TODO add cause */
} ngap_initial_context_setup_fail_t, ngap_ue_ctxt_modification_fail_t, ngap_e_rab_setup_req_fail_t;
typedef struct ngap_nas_non_delivery_ind_s {
unsigned gNB_ue_ngap_id:24;
nas_pdu_t nas_pdu;
/* TODO: add cause */
} ngap_nas_non_delivery_ind_t;
typedef struct ngap_ue_ctxt_modification_req_s {
unsigned gNB_ue_ngap_id:24;
/* Bit-mask of possible present parameters */
ngap_ue_ctxt_modification_present_t present;
/* Following fields are optionnaly present */
/* Security key */
uint8_t security_key[SECURITY_KEY_LENGTH];
/* UE aggregate maximum bitrate */
ambr_t ue_ambr;
/* Security capabilities */
security_capabilities_t security_capabilities;
} ngap_ue_ctxt_modification_req_t;
typedef struct ngap_ue_ctxt_modification_resp_s {
unsigned gNB_ue_ngap_id:24;
} ngap_ue_ctxt_modification_resp_t;
typedef struct ngap_ue_release_complete_s {
unsigned gNB_ue_ngap_id:24;
} ngap_ue_release_complete_t;
//-------------------------------------------------------------------------------------------//
// NGAP -> RRC messages
typedef struct ngap_downlink_nas_s {
/* UE id for initial connection to NGAP */
uint16_t ue_initial_id;
/* Unique UE identifier within an gNB */
unsigned gNB_ue_ngap_id:24;
/* NAS pdu */
nas_pdu_t nas_pdu;
} ngap_downlink_nas_t;
typedef struct ngap_initial_context_setup_req_s {
/* UE id for initial connection to NGAP */
uint16_t ue_initial_id;
/* gNB ue ngap id as initialized by NGAP layer */
unsigned gNB_ue_ngap_id:24;
uint32_t mme_ue_ngap_id;
/* UE aggregate maximum bitrate */
ambr_t ue_ambr;
/* Security algorithms */
security_capabilities_t security_capabilities;
/* Security key */
uint8_t security_key[SECURITY_KEY_LENGTH];
/* Number of e_rab to be setup in the list */
uint8_t nb_of_e_rabs;
/* list of e_rab to be setup by RRC layers */
e_rab_t e_rab_param[NGAP_MAX_E_RAB];
} ngap_initial_context_setup_req_t;
typedef struct tai_plmn_identity_s {
uint16_t mcc;
uint16_t mnc;
uint8_t mnc_digit_length;
} plmn_identity_t;
typedef struct ngap_paging_ind_s {
/* UE identity index value.
* Specified in 3GPP TS 36.304
*/
unsigned ue_index_value:10;
/* UE paging identity */
ue_paging_identity_t ue_paging_identity;
/* Indicates origin of paging */
cn_domain_t cn_domain;
/* PLMN_identity in TAI of Paging*/
plmn_identity_t plmn_identity[256];
/* TAC in TAIList of Paging*/
int16_t tac[256];
/* size of TAIList*/
int16_t tai_size;
/* Optional fields */
paging_drx_t paging_drx;
paging_priority_t paging_priority;
} ngap_paging_ind_t;
typedef struct ngap_e_rab_setup_req_s {
/* UE id for initial connection to NGAP */
uint16_t ue_initial_id;
/* MME UE id */
uint32_t mme_ue_ngap_id;
/* gNB ue ngap id as initialized by NGAP layer */
unsigned gNB_ue_ngap_id:24;
/* Number of e_rab to be setup in the list */
uint8_t nb_e_rabs_tosetup;
/* E RAB setup request */
e_rab_t e_rab_setup_params[NGAP_MAX_E_RAB];
} ngap_e_rab_setup_req_t;
typedef struct ngap_e_rab_setup_resp_s {
unsigned gNB_ue_ngap_id:24;
/* Number of e_rab setup-ed in the list */
uint8_t nb_of_e_rabs;
/* list of e_rab setup-ed by RRC layers */
e_rab_setup_t e_rabs[NGAP_MAX_E_RAB];
/* Number of e_rab failed to be setup in list */
uint8_t nb_of_e_rabs_failed;
/* list of e_rabs that failed to be setup */
e_rab_failed_t e_rabs_failed[NGAP_MAX_E_RAB];
} ngap_e_rab_setup_resp_t;
typedef struct ngap_path_switch_req_s {
unsigned gNB_ue_ngap_id:24;
/* Number of e_rab setup-ed in the list */
uint8_t nb_of_e_rabs;
/* list of e_rab setup-ed by RRC layers */
e_rab_setup_t e_rabs_tobeswitched[NGAP_MAX_E_RAB];
/* MME UE id */
uint32_t mme_ue_ngap_id;
ngap_gummei_t ue_gummei;
uint16_t ue_initial_id;
/* Security algorithms */
security_capabilities_t security_capabilities;
} ngap_path_switch_req_t;
typedef struct ngap_path_switch_req_ack_s {
/* UE id for initial connection to NGAP */
uint16_t ue_initial_id;
unsigned gNB_ue_ngap_id:24;
/* MME UE id */
uint32_t mme_ue_ngap_id;
/* UE aggregate maximum bitrate */
ambr_t ue_ambr;
/* Number of e_rab setup-ed in the list */
uint8_t nb_e_rabs_tobeswitched;
/* list of e_rab to be switched by RRC layers */
e_rab_tobeswitched_t e_rabs_tobeswitched[NGAP_MAX_E_RAB];
/* Number of e_rabs to be released by RRC */
uint8_t nb_e_rabs_tobereleased;
/* list of e_rabs to be released */
e_rab_failed_t e_rabs_tobereleased[NGAP_MAX_E_RAB];
/* Security key */
int next_hop_chain_count;
uint8_t next_security_key[SECURITY_KEY_LENGTH];
} ngap_path_switch_req_ack_t;
typedef struct ngap_e_rab_modification_ind_s {
unsigned gNB_ue_ngap_id:24;
/* MME UE id */
uint32_t mme_ue_ngap_id;
/* Number of e_rab setup-ed in the list */
uint8_t nb_of_e_rabs_tobemodified;
uint8_t nb_of_e_rabs_nottobemodified;
/* list of e_rab setup-ed by RRC layers */
e_rab_setup_t e_rabs_tobemodified[NGAP_MAX_E_RAB];
e_rab_setup_t e_rabs_nottobemodified[NGAP_MAX_E_RAB];
uint16_t ue_initial_id;
} ngap_e_rab_modification_ind_t;
// NGAP --> RRC messages
typedef struct ngap_ue_release_command_s {
unsigned gNB_ue_ngap_id:24;
} ngap_ue_release_command_t;
//-------------------------------------------------------------------------------------------//
// NGAP <-- RRC messages
typedef struct ngap_ue_release_req_s {
unsigned gNB_ue_ngap_id:24;
ngap_Cause_t cause;
long cause_value;
} ngap_ue_release_req_t, ngap_ue_release_resp_t;
typedef struct ngap_e_rab_modify_req_s {
/* UE id for initial connection to NGAP */
uint16_t ue_initial_id;
/* MME UE id */
uint32_t mme_ue_ngap_id;
/* gNB ue ngap id as initialized by NGAP layer */
unsigned gNB_ue_ngap_id:24;
/* Number of e_rab to be modify in the list */
uint8_t nb_e_rabs_tomodify;
/* E RAB modify request */
e_rab_t e_rab_modify_params[NGAP_MAX_E_RAB];
} ngap_e_rab_modify_req_t;
typedef struct ngap_e_rab_modify_resp_s {
unsigned gNB_ue_ngap_id:24;
/* Number of e_rab modify-ed in the list */
uint8_t nb_of_e_rabs;
/* list of e_rab modify-ed by RRC layers */
e_rab_modify_t e_rabs[NGAP_MAX_E_RAB];
/* Number of e_rab failed to be modify in list */
uint8_t nb_of_e_rabs_failed;
/* list of e_rabs that failed to be modify */
e_rab_failed_t e_rabs_failed[NGAP_MAX_E_RAB];
} ngap_e_rab_modify_resp_t;
typedef struct e_rab_release_s {
/* Unique e_rab_id for the UE. */
uint8_t e_rab_id;
} e_rab_release_t;
typedef struct ngap_e_rab_release_command_s {
/* MME UE id */
uint32_t mme_ue_ngap_id;
/* gNB ue ngap id as initialized by NGAP layer */
unsigned gNB_ue_ngap_id:24;
/* The NAS PDU should be forwarded by the RRC layer to the NAS layer */
nas_pdu_t nas_pdu;
/* Number of e_rab to be released in the list */
uint8_t nb_e_rabs_torelease;
/* E RAB release command */
e_rab_release_t e_rab_release_params[NGAP_MAX_E_RAB];
} ngap_e_rab_release_command_t;
typedef struct ngap_e_rab_release_resp_s {
/* MME UE id */
uint32_t mme_ue_ngap_id;
/* gNB ue ngap id as initialized by NGAP layer */
unsigned gNB_ue_ngap_id:24;
/* Number of e_rab released in the list */
uint8_t nb_of_e_rabs_released;
/* list of e_rabs released */
e_rab_release_t e_rab_release[NGAP_MAX_E_RAB];
/* Number of e_rab failed to be released in list */
uint8_t nb_of_e_rabs_failed;
/* list of e_rabs that failed to be released */
e_rab_failed_t e_rabs_failed[NGAP_MAX_E_RAB];
} ngap_e_rab_release_resp_t;
#endif /* NGAP_MESSAGES_TYPES_H_ */
openair2/RRC/NR/MESSAGES/asn1c/ASN1_files/nr-rrc-16.1.0.asn1
+2 -2
View File
@@ -7449,7 +7449,7 @@ ShortMAC-I ::= BIT STRING (SIZE (16))
SINR-Range ::= INTEGER(0..127) SINR-Range ::= INTEGER(0..127)
-- TAG-SINR-RANGE-STOP -- TAG-SINR-RANGE-STOP
-- TAG–SI-REQUESTCONFIG-START -- TAG¨CSI-REQUESTCONFIG-START
SI-RequestConfig::= SEQUENCE { SI-RequestConfig::= SEQUENCE {
rach-OccasionsSI SEQUENCE { rach-OccasionsSI SEQUENCE {
@@ -7466,7 +7466,7 @@ SI-RequestResources ::= SEQUENCE {
ra-ssb-OccasionMaskIndex INTEGER (0..15) OPTIONAL -- Need R ra-ssb-OccasionMaskIndex INTEGER (0..15) OPTIONAL -- Need R
} }
-- TAG–SI-SCHEDULINGINFO-START -- TAG¨CSI-SCHEDULINGINFO-START
SI-SchedulingInfo ::= SEQUENCE { SI-SchedulingInfo ::= SEQUENCE {
schedulingInfoList SEQUENCE (SIZE (1..maxSI-Message)) OF SchedulingInfo, schedulingInfoList SEQUENCE (SIZE (1..maxSI-Message)) OF SchedulingInfo,
openair3/NGAP/ngap_common.c
+41
View File
@@ -0,0 +1,41 @@
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ngap_common.c
* \brief ngap procedures for both gNB and AMF
* \author Sebastien ROUX and Navid Nikaein
* \email navid.nikaein@eurecom.fr
* \date 2012-2015
* \version 0.1
*/
#include <stdint.h>
#include "ngap_common.h"
#include "NGAP_NGAP-PDU.h"
int asn1_xer_print = 0;
void ngap_handle_criticality(NGAP_Criticality_t criticality)
{
}
openair3/NGAP/ngap_common.h
+125
View File
@@ -0,0 +1,125 @@
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/** @defgroup _ngap_impl_ NGAP Layer Reference Implementation
* @ingroup _ref_implementation_
* @{
*/
#if HAVE_CONFIG_H_
# include "config.h"
#endif
#ifndef NGAP_COMMON_H_
#define NGAP_COMMON_H_
#include "common/utils/LOG/log.h"
/* replace ASN_DEBUG defined in asn_internal.h by oai tracing system
Would be cleaner to modify asn_internal.h but it seems to come
from non oai source, with BSD license, so prefer to do that here..
*/
#ifdef ASN_DEBUG
# undef ASN_DEBUG
#endif
#define ASN_DEBUG( x... ) LOG_I(ASN, x)
#include "NGAP_ProtocolIE-Field.h"
#include "NGAP_NGAP-PDU.h"
#include "NGAP_InitiatingMessage.h"
#include "NGAP_SuccessfulOutcome.h"
#include "NGAP_UnsuccessfulOutcome.h"
#include "NGAP_ProtocolIE-Field.h"
#include "NGAP_ProtocolIE-FieldPair.h"
#include "NGAP_ProtocolIE-ContainerPair.h"
#include "NGAP_ProtocolExtensionField.h"
#include "NGAP_ProtocolExtensionContainer.h"
#include "NGAP_asn_constant.h"
#include "NGAP_SupportedTAs-Item.h"
#include "NGAP_ServedGUMMEIsItem.h"
/* Checking version of ASN1C compiler */
#if (ASN1C_ENVIRONMENT_VERSION < ASN1C_MINIMUM_VERSION)
# error "You are compiling ngap with the wrong version of ASN1C"
#endif
#ifndef FALSE
# define FALSE (0)
#endif
#ifndef TRUE
# define TRUE (!FALSE)
#endif
#define NGAP_UE_ID_FMT "0x%06"PRIX32
extern int asn_debug;
extern int asn1_xer_print;
#if defined(ENB_MODE)
# include "common/utils/LOG/log.h"
# include "ngap_eNB_default_values.h"
# define NGAP_ERROR(x, args...) LOG_E(NGAP, x, ##args)
# define NGAP_WARN(x, args...) LOG_W(NGAP, x, ##args)
# define NGAP_TRAF(x, args...) LOG_I(NGAP, x, ##args)
# define NGAP_INFO(x, args...) LOG_I(NGAP, x, ##args)
# define NGAP_DEBUG(x, args...) LOG_I(NGAP, x, ##args)
#else
# include "mme_default_values.h"
# define NGAP_ERROR(x, args...) do { fprintf(stdout, "[NGAP][E]"x, ##args); } while(0)
# define NGAP_WARN(x, args...) do { fprintf(stdout, "[NGAP][W]"x, ##args); } while(0)
# define NGAP_TRAF(x, args...) do { fprintf(stdout, "[NGAP][T]"x, ##args); } while(0)
# define NGAP_INFO(x, args...) do { fprintf(stdout, "[NGAP][I]"x, ##args); } while(0)
# define NGAP_DEBUG(x, args...) do { fprintf(stdout, "[NGAP][D]"x, ##args); } while(0)
#endif
#define NGAP_FIND_PROTOCOLIE_BY_ID(IE_TYPE, ie, container, IE_ID, mandatory) \
do {\
IE_TYPE **ptr; \
ie = NULL; \
for (ptr = container->protocolIEs.list.array; \
ptr < &container->protocolIEs.list.array[container->protocolIEs.list.count]; \
ptr++) { \
if((*ptr)->id == IE_ID) { \
ie = *ptr; \
break; \
} \
} \
if (ie == NULL ) { \
NGAP_ERROR("NGAP_FIND_PROTOCOLIE_BY_ID: %s %d: ie is NULL\n",__FILE__,__LINE__);\
} \
if (mandatory) DevAssert(ie != NULL); \
} while(0)
/** \brief Function callback prototype.
**/
typedef int (*ngap_message_decoded_callback)(
uint32_t assoc_id,
uint32_t stream,
NGAP_NGAP_PDU_t *pdu
);
/** \brief Handle criticality
\param criticality Criticality of the IE
@returns void
**/
void ngap_handle_criticality(NGAP_Criticality_t criticality);
#endif /* NGAP_COMMON_H_ */
openair3/NGAP/ngap_gNB.c
+532
View File
@@ -0,0 +1,532 @@
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ngap_gNB.c
* \brief NGAP gNB task
* \author S. Roux and Navid Nikaein
* \date 2010 - 2015
* \email: navid.nikaein@eurecom.fr
* \version 1.0
* @ingroup _ngap
*/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <crypt.h>
#include "tree.h"
#include "queue.h"
#include "intertask_interface.h"
#include "ngap_gNB_default_values.h"
#include "ngap_common.h"
#include "ngap_gNB_defs.h"
#include "ngap_gNB.h"
#include "ngap_gNB_encoder.h"
#include "ngap_gNB_handlers.h"
#include "ngap_gNB_nnsf.h"
#include "ngap_gNB_nas_procedures.h"
#include "ngap_gNB_management_procedures.h"
#include "ngap_gNB_context_management_procedures.h"
#include "ngap_gNB_itti_messaging.h"
#include "ngap_gNB_ue_context.h" // test, to be removed
#include "msc.h"
#include "assertions.h"
#include "conversions.h"
#if defined(TEST_S1C_MME)
#include "oaisim_mme_test_s1c.h"
#endif
ngap_gNB_config_t ngap_config;
static int ngap_gNB_generate_s1_setup_request(
ngap_gNB_instance_t *instance_p, ngap_gNB_mme_data_t *ngap_mme_data_p);
void ngap_gNB_handle_register_gNB(instance_t instance, ngap_register_enb_req_t *ngap_register_gNB);
void ngap_gNB_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp);
uint32_t ngap_generate_gNB_id(void) {
char *out;
char hostname[50];
int ret;
uint32_t gNB_id;
/* Retrieve the host name */
ret = gethostname(hostname, sizeof(hostname));
DevAssert(ret == 0);
out = crypt(hostname, "eurecom");
DevAssert(out != NULL);
gNB_id = ((out[0] << 24) | (out[1] << 16) | (out[2] << 8) | out[3]);
return gNB_id;
}
static void ngap_gNB_register_mme(ngap_gNB_instance_t *instance_p,
net_ip_address_t *mme_ip_address,
net_ip_address_t *local_ip_addr,
uint16_t in_streams,
uint16_t out_streams,
uint8_t broadcast_plmn_num,
uint8_t broadcast_plmn_index[PLMN_LIST_MAX_SIZE]) {
MessageDef *message_p = NULL;
sctp_new_association_req_t *sctp_new_association_req_p = NULL;
ngap_gNB_mme_data_t *ngap_mme_data_p = NULL;
struct ngap_gNB_mme_data_s *mme = NULL;
DevAssert(instance_p != NULL);
DevAssert(mme_ip_address != NULL);
message_p = itti_alloc_new_message(TASK_NGAP, SCTP_NEW_ASSOCIATION_REQ);
sctp_new_association_req_p = &message_p->ittiMsg.sctp_new_association_req;
sctp_new_association_req_p->port = NGAP_PORT_NUMBER;
sctp_new_association_req_p->ppid = NGAP_SCTP_PPID;
sctp_new_association_req_p->in_streams = in_streams;
sctp_new_association_req_p->out_streams = out_streams;
memcpy(&sctp_new_association_req_p->remote_address,
mme_ip_address,
sizeof(*mme_ip_address));
memcpy(&sctp_new_association_req_p->local_address,
local_ip_addr,
sizeof(*local_ip_addr));
NGAP_INFO("[gNB %d] check the mme registration state\n",instance_p->instance);
mme = NULL;
if ( mme == NULL ) {
/* Create new MME descriptor */
ngap_mme_data_p = calloc(1, sizeof(*ngap_mme_data_p));
DevAssert(ngap_mme_data_p != NULL);
ngap_mme_data_p->cnx_id = ngap_gNB_fetch_add_global_cnx_id();
sctp_new_association_req_p->ulp_cnx_id = ngap_mme_data_p->cnx_id;
ngap_mme_data_p->assoc_id = -1;
ngap_mme_data_p->broadcast_plmn_num = broadcast_plmn_num;
memcpy(&ngap_mme_data_p->mme_s1_ip,
mme_ip_address,
sizeof(*mme_ip_address));
for (int i = 0; i < broadcast_plmn_num; ++i)
ngap_mme_data_p->broadcast_plmn_index[i] = broadcast_plmn_index[i];
ngap_mme_data_p->ngap_gNB_instance = instance_p;
STAILQ_INIT(&ngap_mme_data_p->served_gummei);
/* Insert the new descriptor in list of known MME
* but not yet associated.
*/
RB_INSERT(ngap_mme_map, &instance_p->ngap_mme_head, ngap_mme_data_p);
ngap_mme_data_p->state = NGAP_GNB_STATE_WAITING;
instance_p->ngap_mme_nb ++;
instance_p->ngap_mme_pending_nb ++;
} else if (mme->state == NGAP_GNB_STATE_WAITING) {
instance_p->ngap_mme_pending_nb ++;
sctp_new_association_req_p->ulp_cnx_id = mme->cnx_id;
NGAP_INFO("[gNB %d] MME already registered, retrive the data (state %d, cnx %d, mme_nb %d, mme_pending_nb %d)\n",
instance_p->instance,
mme->state, mme->cnx_id,
instance_p->ngap_mme_nb, instance_p->ngap_mme_pending_nb);
/*ngap_mme_data_p->cnx_id = mme->cnx_id;
sctp_new_association_req_p->ulp_cnx_id = mme->cnx_id;
ngap_mme_data_p->assoc_id = -1;
ngap_mme_data_p->ngap_gNB_instance = instance_p;
*/
} else {
NGAP_WARN("[gNB %d] MME already registered but not in the waiting state, retrive the data (state %d, cnx %d, mme_nb %d, mme_pending_nb %d)\n",
instance_p->instance,
mme->state, mme->cnx_id,
instance_p->ngap_mme_nb, instance_p->ngap_mme_pending_nb);
}
itti_send_msg_to_task(TASK_SCTP, instance_p->instance, message_p);
}
void ngap_gNB_handle_register_gNB(instance_t instance, ngap_register_enb_req_t *ngap_register_gNB) {
ngap_gNB_instance_t *new_instance;
uint8_t index;
DevAssert(ngap_register_gNB != NULL);
/* Look if the provided instance already exists */
new_instance = ngap_gNB_get_instance(instance);
if (new_instance != NULL) {
/* Checks if it is a retry on the same gNB */
DevCheck(new_instance->gNB_id == ngap_register_gNB->gNB_id, new_instance->gNB_id, ngap_register_gNB->gNB_id, 0);
DevCheck(new_instance->cell_type == ngap_register_gNB->cell_type, new_instance->cell_type, ngap_register_gNB->cell_type, 0);
DevCheck(new_instance->num_plmn == ngap_register_gNB->num_plmn, new_instance->num_plmn, ngap_register_gNB->num_plmn, 0);
DevCheck(new_instance->tac == ngap_register_gNB->tac, new_instance->tac, ngap_register_gNB->tac, 0);
for (int i = 0; i < new_instance->num_plmn; i++) {
DevCheck(new_instance->mcc[i] == ngap_register_gNB->mcc[i], new_instance->mcc[i], ngap_register_gNB->mcc[i], 0);
DevCheck(new_instance->mnc[i] == ngap_register_gNB->mnc[i], new_instance->mnc[i], ngap_register_gNB->mnc[i], 0);
DevCheck(new_instance->mnc_digit_length[i] == ngap_register_gNB->mnc_digit_length[i], new_instance->mnc_digit_length[i], ngap_register_gNB->mnc_digit_length[i], 0);
}
DevCheck(new_instance->default_drx == ngap_register_gNB->default_drx, new_instance->default_drx, ngap_register_gNB->default_drx, 0);
} else {
new_instance = calloc(1, sizeof(ngap_gNB_instance_t));
DevAssert(new_instance != NULL);
RB_INIT(&new_instance->ngap_ue_head);
RB_INIT(&new_instance->ngap_mme_head);
/* Copy usefull parameters */
new_instance->instance = instance;
new_instance->gNB_name = ngap_register_gNB->gNB_name;
new_instance->gNB_id = ngap_register_gNB->gNB_id;
new_instance->cell_type = ngap_register_gNB->cell_type;
new_instance->tac = ngap_register_gNB->tac;
memcpy(&new_instance->gNB_s1_ip,
&ngap_register_gNB->enb_ip_address,
sizeof(ngap_register_gNB->enb_ip_address));
for (int i = 0; i < ngap_register_gNB->num_plmn; i++) {
new_instance->mcc[i] = ngap_register_gNB->mcc[i];
new_instance->mnc[i] = ngap_register_gNB->mnc[i];
new_instance->mnc_digit_length[i] = ngap_register_gNB->mnc_digit_length[i];
}
new_instance->num_plmn = ngap_register_gNB->num_plmn;
new_instance->default_drx = ngap_register_gNB->default_drx;
/* Add the new instance to the list of gNB (meaningfull in virtual mode) */
ngap_gNB_insert_new_instance(new_instance);
NGAP_INFO("Registered new gNB[%d] and %s gNB id %u\n",
instance,
ngap_register_gNB->cell_type == CELL_MACRO_GNB ? "macro" : "home",
ngap_register_gNB->gNB_id);
}
DevCheck(ngap_register_gNB->nb_mme <= NGAP_MAX_NB_MME_IP_ADDRESS,
NGAP_MAX_NB_MME_IP_ADDRESS, ngap_register_gNB->nb_mme, 0);
/* Trying to connect to provided list of MME ip address */
for (index = 0; index < ngap_register_gNB->nb_mme; index++) {
net_ip_address_t *mme_ip = &ngap_register_gNB->mme_ip_address[index];
struct ngap_gNB_mme_data_s *mme = NULL;
RB_FOREACH(mme, ngap_mme_map, &new_instance->ngap_mme_head) {
/* Compare whether IPv4 and IPv6 information is already present, in which
* wase we do not register again */
if (mme->mme_s1_ip.ipv4 == mme_ip->ipv4 && (!mme_ip->ipv4
|| strncmp(mme->mme_s1_ip.ipv4_address, mme_ip->ipv4_address, 16) == 0)
&& mme->mme_s1_ip.ipv6 == mme_ip->ipv6 && (!mme_ip->ipv6
|| strncmp(mme->mme_s1_ip.ipv6_address, mme_ip->ipv6_address, 46) == 0))
break;
}
if (mme)
continue;
ngap_gNB_register_mme(new_instance,
mme_ip,
&ngap_register_gNB->enb_ip_address,
ngap_register_gNB->sctp_in_streams,
ngap_register_gNB->sctp_out_streams,
ngap_register_gNB->broadcast_plmn_num[index],
ngap_register_gNB->broadcast_plmn_index[index]);
}
}
void ngap_gNB_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp) {
ngap_gNB_instance_t *instance_p;
ngap_gNB_mme_data_t *ngap_mme_data_p;
DevAssert(sctp_new_association_resp != NULL);
instance_p = ngap_gNB_get_instance(instance);
DevAssert(instance_p != NULL);
ngap_mme_data_p = ngap_gNB_get_MME(instance_p, -1,
sctp_new_association_resp->ulp_cnx_id);
DevAssert(ngap_mme_data_p != NULL);
if (sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED) {
NGAP_WARN("Received unsuccessful result for SCTP association (%u), instance %d, cnx_id %u\n",
sctp_new_association_resp->sctp_state,
instance,
sctp_new_association_resp->ulp_cnx_id);
ngap_handle_s1_setup_message(ngap_mme_data_p, sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN);
return;
}
/* Update parameters */
ngap_mme_data_p->assoc_id = sctp_new_association_resp->assoc_id;
ngap_mme_data_p->in_streams = sctp_new_association_resp->in_streams;
ngap_mme_data_p->out_streams = sctp_new_association_resp->out_streams;
/* Prepare new S1 Setup Request */
ngap_gNB_generate_s1_setup_request(instance_p, ngap_mme_data_p);
}
static
void ngap_gNB_handle_sctp_data_ind(sctp_data_ind_t *sctp_data_ind) {
int result;
DevAssert(sctp_data_ind != NULL);
#if defined(TEST_S1C_MME)
mme_test_s1_notify_sctp_data_ind(sctp_data_ind->assoc_id, sctp_data_ind->stream,
sctp_data_ind->buffer, sctp_data_ind->buffer_length);
#else
ngap_gNB_handle_message(sctp_data_ind->assoc_id, sctp_data_ind->stream,
sctp_data_ind->buffer, sctp_data_ind->buffer_length);
#endif
result = itti_free(TASK_UNKNOWN, sctp_data_ind->buffer);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
}
void ngap_gNB_init(void) {
NGAP_DEBUG("Starting NGAP layer\n");
ngap_gNB_prepare_internal_data();
itti_mark_task_ready(TASK_NGAP);
MSC_START_USE();
}
void *ngap_gNB_process_itti_msg(void *notUsed) {
MessageDef *received_msg = NULL;
int result;
itti_receive_msg(TASK_NGAP, &received_msg);
switch (ITTI_MSG_ID(received_msg)) {
case TERMINATE_MESSAGE:
NGAP_WARN(" *** Exiting NGAP thread\n");
itti_exit_task();
break;
case NGAP_REGISTER_GNB_REQ: {
/* Register a new gNB.
* in Virtual mode gNBs will be distinguished using the mod_id/
* Each gNB has to send an NGAP_REGISTER_GNB message with its
* own parameters.
*/
ngap_gNB_handle_register_gNB(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_REGISTER_GNB_REQ(received_msg));
}
break;
case SCTP_NEW_ASSOCIATION_RESP: {
ngap_gNB_handle_sctp_association_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&received_msg->ittiMsg.sctp_new_association_resp);
}
break;
case SCTP_DATA_IND: {
ngap_gNB_handle_sctp_data_ind(&received_msg->ittiMsg.sctp_data_ind);
}
break;
case NGAP_NAS_FIRST_REQ: {
ngap_gNB_handle_nas_first_req(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_NAS_FIRST_REQ(received_msg));
}
break;
case NGAP_UPLINK_NAS: {
ngap_gNB_nas_uplink(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_UPLINK_NAS(received_msg));
}
break;
case NGAP_UE_CAPABILITIES_IND: {
ngap_gNB_ue_capabilities(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_UE_CAPABILITIES_IND(received_msg));
}
break;
case NGAP_INITIAL_CONTEXT_SETUP_RESP: {
ngap_gNB_initial_ctxt_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_INITIAL_CONTEXT_SETUP_RESP(received_msg));
}
break;
case NGAP_E_RAB_SETUP_RESP: {
ngap_gNB_e_rab_setup_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_E_RAB_SETUP_RESP(received_msg));
}
break;
case NGAP_E_RAB_MODIFY_RESP: {
ngap_gNB_e_rab_modify_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_E_RAB_MODIFY_RESP(received_msg));
}
break;
case NGAP_NAS_NON_DELIVERY_IND: {
ngap_gNB_nas_non_delivery_ind(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_NAS_NON_DELIVERY_IND(received_msg));
}
break;
case NGAP_PATH_SWITCH_REQ: {
ngap_gNB_path_switch_req(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_PATH_SWITCH_REQ(received_msg));
}
break;
case NGAP_E_RAB_MODIFICATION_IND: {
ngap_gNB_generate_E_RAB_Modification_Indication(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_E_RAB_MODIFICATION_IND(received_msg));
}
break;
case NGAP_UE_CONTEXT_RELEASE_COMPLETE: {
ngap_ue_context_release_complete(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_UE_CONTEXT_RELEASE_COMPLETE(received_msg));
}
break;
case NGAP_UE_CONTEXT_RELEASE_REQ: {
ngap_gNB_instance_t *ngap_gNB_instance_p = NULL; // test
struct ngap_gNB_ue_context_s *ue_context_p = NULL; // test
ngap_ue_context_release_req(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_UE_CONTEXT_RELEASE_REQ(received_msg));
ngap_gNB_instance_p = ngap_gNB_get_instance(ITTI_MESSAGE_GET_INSTANCE(received_msg)); // test
DevAssert(ngap_gNB_instance_p != NULL); // test
if ((ue_context_p = ngap_gNB_get_ue_context(ngap_gNB_instance_p,
NGAP_UE_CONTEXT_RELEASE_REQ(received_msg).gNB_ue_ngap_id)) == NULL) { // test
/* The context for this gNB ue ngap id doesn't exist in the map of gNB UEs */
NGAP_ERROR("Failed to find ue context associated with gNB ue ngap id: %u\n",
NGAP_UE_CONTEXT_RELEASE_REQ(received_msg).gNB_ue_ngap_id); // test
} // test
}
break;
case NGAP_E_RAB_RELEASE_RESPONSE: {
ngap_gNB_e_rab_release_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&NGAP_E_RAB_RELEASE_RESPONSE(received_msg));
}
break;
default:
NGAP_ERROR("Received unhandled message: %d:%s\n",
ITTI_MSG_ID(received_msg), ITTI_MSG_NAME(received_msg));
break;
}
result = itti_free (ITTI_MSG_ORIGIN_ID(received_msg), received_msg);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
received_msg = NULL;
return NULL;
}
void *ngap_gNB_task(void *arg) {
ngap_gNB_init();
while (1) {
(void) ngap_gNB_process_itti_msg(NULL);
}
return NULL;
}
//-----------------------------------------------------------------------------
/*
* gNB generate a S1 setup request towards MME
*/
static int ngap_gNB_generate_s1_setup_request(
ngap_gNB_instance_t *instance_p,
ngap_gNB_mme_data_t *ngap_mme_data_p)
//-----------------------------------------------------------------------------
{
NGAP_NGAP_PDU_t pdu;
NGAP_S1SetupRequest_t *out = NULL;
NGAP_S1SetupRequestIEs_t *ie = NULL;
NGAP_SupportedTAs_Item_t *ta = NULL;
NGAP_PLMNidentity_t *plmn = NULL;
uint8_t *buffer = NULL;
uint32_t len = 0;
int ret = 0;
DevAssert(instance_p != NULL);
DevAssert(ngap_mme_data_p != NULL);
ngap_mme_data_p->state = NGAP_GNB_STATE_WAITING;
/* Prepare the NGAP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = NGAP_NGAP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = NGAP_ProcedureCode_id_S1Setup;
pdu.choice.initiatingMessage.criticality = NGAP_Criticality_reject;
pdu.choice.initiatingMessage.value.present = NGAP_InitiatingMessage__value_PR_S1SetupRequest;
out = &pdu.choice.initiatingMessage.value.choice.S1SetupRequest;
/* mandatory */
ie = (NGAP_S1SetupRequestIEs_t *)calloc(1, sizeof(NGAP_S1SetupRequestIEs_t));
ie->id = NGAP_ProtocolIE_ID_id_Global_GNB_ID;
ie->criticality = NGAP_Criticality_reject;
ie->value.present = NGAP_S1SetupRequestIEs__value_PR_Global_GNB_ID;
MCC_MNC_TO_PLMNID(instance_p->mcc[ngap_mme_data_p->broadcast_plmn_index[0]],
instance_p->mnc[ngap_mme_data_p->broadcast_plmn_index[0]],
instance_p->mnc_digit_length[ngap_mme_data_p->broadcast_plmn_index[0]],
&ie->value.choice.Global_GNB_ID.pLMNidentity);
ie->value.choice.Global_GNB_ID.gNB_ID.present = NGAP_GNB_ID_PR_macroGNB_ID;
MACRO_GNB_ID_TO_BIT_STRING(instance_p->gNB_id,
&ie->value.choice.Global_GNB_ID.gNB_ID.choice.macroGNB_ID);
NGAP_INFO("%d -> %02x%02x%02x\n", instance_p->gNB_id,
ie->value.choice.Global_GNB_ID.gNB_ID.choice.macroGNB_ID.buf[0],
ie->value.choice.Global_GNB_ID.gNB_ID.choice.macroGNB_ID.buf[1],
ie->value.choice.Global_GNB_ID.gNB_ID.choice.macroGNB_ID.buf[2]);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* optional */
if (instance_p->gNB_name) {
ie = (NGAP_S1SetupRequestIEs_t *)calloc(1, sizeof(NGAP_S1SetupRequestIEs_t));
ie->id = NGAP_ProtocolIE_ID_id_gNBname;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_S1SetupRequestIEs__value_PR_GNBname;
OCTET_STRING_fromBuf(&ie->value.choice.GNBname, instance_p->gNB_name,
strlen(instance_p->gNB_name));
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* mandatory */
ie = (NGAP_S1SetupRequestIEs_t *)calloc(1, sizeof(NGAP_S1SetupRequestIEs_t));
ie->id = NGAP_ProtocolIE_ID_id_SupportedTAs;
ie->criticality = NGAP_Criticality_reject;
ie->value.present = NGAP_S1SetupRequestIEs__value_PR_SupportedTAs;
{
ta = (NGAP_SupportedTAs_Item_t *)calloc(1, sizeof(NGAP_SupportedTAs_Item_t));
INT16_TO_OCTET_STRING(instance_p->tac, &ta->tAC);
{
for (int i = 0; i < ngap_mme_data_p->broadcast_plmn_num; ++i) {
plmn = (NGAP_PLMNidentity_t *)calloc(1, sizeof(NGAP_PLMNidentity_t));
MCC_MNC_TO_TBCD(instance_p->mcc[ngap_mme_data_p->broadcast_plmn_index[i]],
instance_p->mnc[ngap_mme_data_p->broadcast_plmn_index[i]],
instance_p->mnc_digit_length[ngap_mme_data_p->broadcast_plmn_index[i]],
plmn);
ASN_SEQUENCE_ADD(&ta->broadcastPLMNs.list, plmn);
}
}
ASN_SEQUENCE_ADD(&ie->value.choice.SupportedTAs.list, ta);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (NGAP_S1SetupRequestIEs_t *)calloc(1, sizeof(NGAP_S1SetupRequestIEs_t));
ie->id = NGAP_ProtocolIE_ID_id_DefaultPagingDRX;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_S1SetupRequestIEs__value_PR_PagingDRX;
ie->value.choice.PagingDRX = instance_p->default_drx;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
if (ngap_gNB_encode_pdu(&pdu, &buffer, &len) < 0) {
NGAP_ERROR("Failed to encode S1 setup request\n");
return -1;
}
/* Non UE-Associated signalling -> stream = 0 */
ngap_gNB_itti_send_sctp_data_req(instance_p->instance, ngap_mme_data_p->assoc_id, buffer, len, 0);
return ret;
}
openair3/NGAP/ngap_gNB.h
+52
View File
@@ -0,0 +1,52 @@
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <stdio.h>
#include <stdint.h>
/** @defgroup _ngap_impl_ NGAP Layer Reference Implementation for gNB
* @ingroup _ref_implementation_
* @{
*/
#ifndef NGAP_GNB_H_
#define NGAP_GNB_H_
typedef struct ngap_gNB_config_s {
// MME related params
unsigned char mme_enabled; ///< MME enabled ?
} ngap_gNB_config_t;
extern ngap_gNB_config_t ngap_config;
#define EPC_MODE_ENABLED ngap_config.mme_enabled
void *ngap_gNB_process_itti_msg(void*);
void ngap_gNB_init(void);
void *ngap_gNB_task(void *arg);
uint32_t ngap_generate_gNB_id(void);
#endif /* NGAP_GNB_H_ */
/**
* @}
*/
openair3/NGAP/ngap_gNB_context_management_procedures.c
+266
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@@ -0,0 +1,266 @@
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ngap_gNB_context_management_procedures.c
* \brief NGAP context management procedures
* \author S. Roux and Navid Nikaein
* \date 2010 - 2015
* \email: navid.nikaein@eurecom.fr
* \version 1.0
* @ingroup _ngap
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "assertions.h"
#include "conversions.h"
#include "intertask_interface.h"
#include "ngap_common.h"
#include "ngap_gNB_defs.h"
#include "ngap_gNB_itti_messaging.h"
#include "ngap_gNB_encoder.h"
#include "ngap_gNB_nnsf.h"
#include "ngap_gNB_ue_context.h"
#include "ngap_gNB_nas_procedures.h"
#include "ngap_gNB_management_procedures.h"
#include "ngap_gNB_context_management_procedures.h"
#include "msc.h"
int ngap_ue_context_release_complete(instance_t instance,
ngap_ue_release_complete_t *ue_release_complete_p)
{
ngap_gNB_instance_t *ngap_gNB_instance_p = NULL;
struct ngap_gNB_ue_context_s *ue_context_p = NULL;
NGAP_NGAP_PDU_t pdu;
NGAP_UEContextReleaseComplete_t *out;
NGAP_UEContextReleaseComplete_IEs_t *ie;
uint8_t *buffer;
uint32_t length;
/* Retrieve the NGAP gNB instance associated with Mod_id */
ngap_gNB_instance_p = ngap_gNB_get_instance(instance);
DevAssert(ue_release_complete_p != NULL);
DevAssert(ngap_gNB_instance_p != NULL);
/*RB_FOREACH(ue_context_p, ngap_ue_map, &ngap_gNB_instance_p->ngap_ue_head) {
NGAP_WARN("in ngap_ue_map: UE context gNB_ue_ngap_id %u mme_ue_ngap_id %u state %u\n",
ue_context_p->gNB_ue_ngap_id, ue_context_p->mme_ue_ngap_id,
ue_context_p->ue_state);
}*/
if ((ue_context_p = ngap_gNB_get_ue_context(ngap_gNB_instance_p,
ue_release_complete_p->gNB_ue_ngap_id)) == NULL) {
/* The context for this gNB ue ngap id doesn't exist in the map of gNB UEs */
NGAP_WARN("Failed to find ue context associated with gNB ue ngap id: %u\n",
ue_release_complete_p->gNB_ue_ngap_id);
return -1;
}
/* Prepare the NGAP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = NGAP_NGAP_PDU_PR_successfulOutcome;
pdu.choice.successfulOutcome.procedureCode = NGAP_ProcedureCode_id_UEContextRelease;
pdu.choice.successfulOutcome.criticality = NGAP_Criticality_reject;
pdu.choice.successfulOutcome.value.present = NGAP_SuccessfulOutcome__value_PR_UEContextReleaseComplete;
out = &pdu.choice.successfulOutcome.value.choice.UEContextReleaseComplete;
/* mandatory */
ie = (NGAP_UEContextReleaseComplete_IEs_t *)calloc(1, sizeof(NGAP_UEContextReleaseComplete_IEs_t));
ie->id = NGAP_ProtocolIE_ID_id_MME_UE_NGAP_ID;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_UEContextReleaseComplete_IEs__value_PR_MME_UE_NGAP_ID;
ie->value.choice.MME_UE_NGAP_ID = ue_context_p->mme_ue_ngap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (NGAP_UEContextReleaseComplete_IEs_t *)calloc(1, sizeof(NGAP_UEContextReleaseComplete_IEs_t));
ie->id = NGAP_ProtocolIE_ID_id_gNB_UE_NGAP_ID;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_UEContextReleaseComplete_IEs__value_PR_GNB_UE_NGAP_ID;
ie->value.choice.GNB_UE_NGAP_ID = ue_release_complete_p->gNB_ue_ngap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
if (ngap_gNB_encode_pdu(&pdu, &buffer, &length) < 0) {
/* Encode procedure has failed... */
NGAP_ERROR("Failed to encode UE context release complete\n");
return -1;
}
MSC_LOG_TX_MESSAGE(
MSC_NGAP_GNB,
MSC_NGAP_MME,
buffer,
length,
MSC_AS_TIME_FMT" UEContextRelease successfulOutcome gNB_ue_ngap_id %u mme_ue_ngap_id %u",
0,0, //MSC_AS_TIME_ARGS(ctxt_pP),
ue_release_complete_p->gNB_ue_ngap_id,
ue_context_p->mme_ue_ngap_id);
/* UE associated signalling -> use the allocated stream */
ngap_gNB_itti_send_sctp_data_req(ngap_gNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
length, ue_context_p->tx_stream);
//LG ngap_gNB_itti_send_sctp_close_association(ngap_gNB_instance_p->instance,
// ue_context_p->mme_ref->assoc_id);
// release UE context
struct ngap_gNB_ue_context_s *ue_context2_p = NULL;
if ((ue_context2_p = RB_REMOVE(ngap_ue_map, &ngap_gNB_instance_p->ngap_ue_head, ue_context_p))
!= NULL) {
NGAP_WARN("Removed UE context gNB_ue_ngap_id %u\n",
ue_context2_p->gNB_ue_ngap_id);
ngap_gNB_free_ue_context(ue_context2_p);
} else {
NGAP_WARN("Removing UE context gNB_ue_ngap_id %u: did not find context\n",
ue_context_p->gNB_ue_ngap_id);
}
/*RB_FOREACH(ue_context_p, ngap_ue_map, &ngap_gNB_instance_p->ngap_ue_head) {
NGAP_WARN("in ngap_ue_map: UE context gNB_ue_ngap_id %u mme_ue_ngap_id %u state %u\n",
ue_context_p->gNB_ue_ngap_id, ue_context_p->mme_ue_ngap_id,
ue_context_p->ue_state);
}*/
return 0;
}
int ngap_ue_context_release_req(instance_t instance,
ngap_ue_release_req_t *ue_release_req_p)
{
ngap_gNB_instance_t *ngap_gNB_instance_p = NULL;
struct ngap_gNB_ue_context_s *ue_context_p = NULL;
NGAP_NGAP_PDU_t pdu;
NGAP_UEContextReleaseRequest_t *out;
NGAP_UEContextReleaseRequest_IEs_t *ie;
uint8_t *buffer = NULL;
uint32_t length;
/* Retrieve the NGAP gNB instance associated with Mod_id */
ngap_gNB_instance_p = ngap_gNB_get_instance(instance);
DevAssert(ue_release_req_p != NULL);
DevAssert(ngap_gNB_instance_p != NULL);
if ((ue_context_p = ngap_gNB_get_ue_context(ngap_gNB_instance_p,
ue_release_req_p->gNB_ue_ngap_id)) == NULL) {
/* The context for this gNB ue ngap id doesn't exist in the map of gNB UEs */
NGAP_WARN("Failed to find ue context associated with gNB ue ngap id: %u\n",
ue_release_req_p->gNB_ue_ngap_id);
return -1;
}
/* Prepare the NGAP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = NGAP_NGAP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = NGAP_ProcedureCode_id_UEContextReleaseRequest;
pdu.choice.initiatingMessage.criticality = NGAP_Criticality_ignore;
pdu.choice.initiatingMessage.value.present = NGAP_InitiatingMessage__value_PR_UEContextReleaseRequest;
out = &pdu.choice.initiatingMessage.value.choice.UEContextReleaseRequest;
/* mandatory */
ie = (NGAP_UEContextReleaseRequest_IEs_t *)calloc(1, sizeof(NGAP_UEContextReleaseRequest_IEs_t));
ie->id = NGAP_ProtocolIE_ID_id_MME_UE_NGAP_ID;
ie->criticality = NGAP_Criticality_reject;
ie->value.present = NGAP_UEContextReleaseRequest_IEs__value_PR_MME_UE_NGAP_ID;
ie->value.choice.MME_UE_NGAP_ID = ue_context_p->mme_ue_ngap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (NGAP_UEContextReleaseRequest_IEs_t *)calloc(1, sizeof(NGAP_UEContextReleaseRequest_IEs_t));
ie->id = NGAP_ProtocolIE_ID_id_gNB_UE_NGAP_ID;
ie->criticality = NGAP_Criticality_reject;
ie->value.present = NGAP_UEContextReleaseRequest_IEs__value_PR_GNB_UE_NGAP_ID;
ie->value.choice.GNB_UE_NGAP_ID = ue_release_req_p->gNB_ue_ngap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (NGAP_UEContextReleaseRequest_IEs_t *)calloc(1, sizeof(NGAP_UEContextReleaseRequest_IEs_t));
ie->id = NGAP_ProtocolIE_ID_id_Cause;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_UEContextReleaseRequest_IEs__value_PR_Cause;
switch (ue_release_req_p->cause) {
case NGAP_Cause_PR_radioNetwork:
ie->value.choice.Cause.present = NGAP_Cause_PR_radioNetwork;
ie->value.choice.Cause.choice.radioNetwork = ue_release_req_p->cause_value;
break;
case NGAP_Cause_PR_transport:
ie->value.choice.Cause.present = NGAP_Cause_PR_transport;
ie->value.choice.Cause.choice.transport = ue_release_req_p->cause_value;
break;
case NGAP_Cause_PR_nas:
ie->value.choice.Cause.present = NGAP_Cause_PR_nas;
ie->value.choice.Cause.choice.nas = ue_release_req_p->cause_value;
break;
case NGAP_Cause_PR_protocol:
ie->value.choice.Cause.present = NGAP_Cause_PR_protocol;
ie->value.choice.Cause.choice.protocol = ue_release_req_p->cause_value;
break;
case NGAP_Cause_PR_misc:
ie->value.choice.Cause.present = NGAP_Cause_PR_misc;
ie->value.choice.Cause.choice.misc = ue_release_req_p->cause_value;
break;
case NGAP_Cause_PR_NOTHING:
default:
ie->value.choice.Cause.present = NGAP_Cause_PR_NOTHING;
break;
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
if (ngap_gNB_encode_pdu(&pdu, &buffer, &length) < 0) {
/* Encode procedure has failed... */
NGAP_ERROR("Failed to encode UE context release complete\n");
return -1;
}
MSC_LOG_TX_MESSAGE(
MSC_NGAP_GNB,
MSC_NGAP_MME,
buffer,
length,
MSC_AS_TIME_FMT" UEContextReleaseRequest initiatingMessage gNB_ue_ngap_id %u mme_ue_ngap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
ue_release_req_p->gNB_ue_ngap_id,
ue_context_p->mme_ue_ngap_id);
/* UE associated signalling -> use the allocated stream */
ngap_gNB_itti_send_sctp_data_req(ngap_gNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
length, ue_context_p->tx_stream);
return 0;
}
openair3/NGAP/ngap_gNB_context_management_procedures.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_GNB_CONTEXT_MANAGEMENT_PROCEDURES_H_
#define NGAP_GNB_CONTEXT_MANAGEMENT_PROCEDURES_H_
int ngap_ue_context_release_complete(instance_t instance,
ngap_ue_release_complete_t *ue_release_complete_p);
int ngap_ue_context_release_req(instance_t instance,
ngap_ue_release_req_t *ue_release_req_p);
#endif /* NGAP_GNB_CONTEXT_MANAGEMENT_PROCEDURES_H_ */
openair3/NGAP/ngap_gNB_decoder.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ngap_gNB_decoder.c
* \brief ngap pdu decode procedures for gNB
* \author Sebastien ROUX and Navid Nikaein
* \email navid.nikaein@eurecom.fr
* \date 2013 - 2015
* \version 0.1
*/
#include <stdio.h>
#include "assertions.h"
#include "intertask_interface.h"
#include "ngap_common.h"
#include "ngap_gNB_decoder.h"
static int ngap_gNB_decode_initiating_message(NGAP_NGAP_PDU_t *pdu) {
asn_encode_to_new_buffer_result_t res = { NULL, {0, NULL, NULL} };
DevAssert(pdu != NULL);
switch(pdu->choice.initiatingMessage.procedureCode) {
case NGAP_ProcedureCode_id_downlinkNASTransport:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_InitialContextSetup:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_UEContextRelease:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_Paging:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
NGAP_INFO("Paging initiating message\n");
free(res.buffer);
break;
case NGAP_ProcedureCode_id_E_RABSetup:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
NGAP_INFO("E_RABSetup initiating message\n");
break;
case NGAP_ProcedureCode_id_E_RABModify:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
NGAP_INFO("E_RABModify initiating message\n");
break;
case NGAP_ProcedureCode_id_E_RABRelease:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
NGAP_INFO("TODO E_RABRelease initiating message\n");
break;
case NGAP_ProcedureCode_id_ErrorIndication:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
NGAP_INFO("TODO ErrorIndication initiating message\n");
break;
default:
NGAP_ERROR("Unknown procedure ID (%d) for initiating message\n",
(int)pdu->choice.initiatingMessage.procedureCode);
AssertFatal( 0, "Unknown procedure ID (%d) for initiating message\n",
(int)pdu->choice.initiatingMessage.procedureCode);
return -1;
}
return 0;
}
static int ngap_gNB_decode_successful_outcome(NGAP_NGAP_PDU_t *pdu) {
asn_encode_to_new_buffer_result_t res = { NULL, {0, NULL, NULL} };
DevAssert(pdu != NULL);
switch(pdu->choice.successfulOutcome.procedureCode) {
case NGAP_ProcedureCode_id_S1Setup:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_PathSwitchRequest:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_E_RABModificationIndication:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
default:
NGAP_ERROR("Unknown procedure ID (%d) for successfull outcome message\n",
(int)pdu->choice.successfulOutcome.procedureCode);
return -1;
}
return 0;
}
static int ngap_gNB_decode_unsuccessful_outcome(NGAP_NGAP_PDU_t *pdu) {
asn_encode_to_new_buffer_result_t res = { NULL, {0, NULL, NULL} };
DevAssert(pdu != NULL);
switch(pdu->choice.unsuccessfulOutcome.procedureCode) {
case NGAP_ProcedureCode_id_S1Setup:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_PathSwitchRequest:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
default:
NGAP_ERROR("Unknown procedure ID (%d) for unsuccessfull outcome message\n",
(int)pdu->choice.unsuccessfulOutcome.procedureCode);
return -1;
}
return 0;
}
int ngap_gNB_decode_pdu(NGAP_NGAP_PDU_t *pdu, const uint8_t *const buffer,
const uint32_t length) {
asn_dec_rval_t dec_ret;
DevAssert(pdu != NULL);
DevAssert(buffer != NULL);
dec_ret = aper_decode(NULL,
&asn_DEF_NGAP_NGAP_PDU,
(void **)&pdu,
buffer,
length,
0,
0);
if (dec_ret.code != RC_OK) {
NGAP_ERROR("Failed to decode pdu\n");
return -1;
}
switch(pdu->present) {
case NGAP_NGAP_PDU_PR_initiatingMessage:
return ngap_gNB_decode_initiating_message(pdu);
case NGAP_NGAP_PDU_PR_successfulOutcome:
return ngap_gNB_decode_successful_outcome(pdu);
case NGAP_NGAP_PDU_PR_unsuccessfulOutcome:
return ngap_gNB_decode_unsuccessful_outcome(pdu);
default:
NGAP_DEBUG("Unknown presence (%d) or not implemented\n", (int)pdu->present);
break;
}
return -1;
}
openair3/NGAP/ngap_gNB_decoder.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <stdint.h>
#ifndef NGAP_GNB_DECODER_H_
#define NGAP_GNB_DECODER_H_
int ngap_gNB_decode_pdu(NGAP_NGAP_PDU_t *pdu, const uint8_t *const buffer,
const uint32_t length) __attribute__ ((warn_unused_result));
#endif /* NGAP_GNB_DECODER_H_ */
openair3/NGAP/ngap_gNB_default_values.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_GNB_DEFAULT_VALUES_H_
#define NGAP_GNB_DEFAULT_VALUES_H_
#define GNB_TAC (1)
#define GNB_MCC (208)
#define GNB_MNC (92)
#define GNB_NAME "Eurecom GNB"
#define GNB_NAME_FORMAT (GNB_NAME" %u")
#define NGAP_PORT_NUMBER (36412)
#define NGAP_SCTP_PPID (18)
#define X2AP_PORT_NUMBER (36422)
#define X2AP_SCTP_PPID (27)
#endif /* NGAP_GNB_DEFAULT_VALUES_H_ */
openair3/NGAP/ngap_gNB_defs.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <stdint.h>
#include "queue.h"
#include "tree.h"
#include "sctp_gNB_defs.h"
#ifndef NGAP_GNB_DEFS_H_
#define NGAP_GNB_DEFS_H_
#define NGAP_GNB_NAME_LENGTH_MAX (150)
typedef enum {
/* Disconnected state: initial state for any association. */
NGAP_GNB_STATE_DISCONNECTED = 0x0,
/* State waiting for S1 Setup response message if gNB is MME accepted or
* S1 Setup failure if MME rejects the gNB.
*/
NGAP_GNB_STATE_WAITING = 0x1,
/* The gNB is successfully connected to MME, UE contexts can be created. */
NGAP_GNB_STATE_CONNECTED = 0x2,
/* The MME has sent an overload start message. Once the MME disables the
* OVERLOAD marker, the state of the association will be
* NGAP_GNB_STATE_CONNECTED.
*/
NGAP_GNB_OVERLOAD = 0x3,
/* Max number of states available */
NGAP_GNB_STATE_MAX,
} ngap_gNB_state_t;
/* If the Overload Action IE in the OVERLOAD START message is set to
* - “reject all RRC connection establishments for non-emergency mobile
* originated data transfer “ (i.e. reject traffic corresponding to RRC cause
* “mo-data “ (TS 36.331 [16])), or
* - “reject all RRC connection establishments for signalling “ (i.e. reject
* traffic corresponding to RRC cause “modata” and “mo-signalling”
* (TS 36.331 [16])),or
* - “only permit RRC connection establishments for emergency sessions and
* mobile terminated services” (i.e. only permit traffic corresponding to RRC
* cause “emergency” and “mt-Access” (TS 36.331 [16])).
*
* NOTE: When the Overload Action IE is set to “only permit RRC connection
* establishments for emergency sessions and mobile terminated services”,
* emergency calls with RRC cause “highPriorityAcess” from high priority users
* are rejected (TS 24.301 [24]).
*/
typedef enum {
NGAP_OVERLOAD_REJECT_MO_DATA = 0x0,
NGAP_OVERLOAD_REJECT_ALL_SIGNALLING = 0x1,
NGAP_OVERLOAD_ONLY_EMERGENCY_AND_MT = 0x2,
NGAP_NO_OVERLOAD = 0x3,
NGAP_OVERLOAD_MAX,
} ngap_overload_state_t;
/* Served PLMN identity element */
struct plmn_identity_s {
uint16_t mcc;
uint16_t mnc;
uint8_t mnc_digit_length;
STAILQ_ENTRY(plmn_identity_s) next;
};
/* Served group id element */
struct served_group_id_s {
uint16_t mme_group_id;
STAILQ_ENTRY(served_group_id_s) next;
};
/* Served mme code for a particular MME */
struct mme_code_s {
uint8_t mme_code;
STAILQ_ENTRY(mme_code_s) next;
};
/* Served gummei element */
struct served_gummei_s {
/* Number of MME served PLMNs */
uint8_t nb_served_plmns;
/* List of served PLMNs by MME */
STAILQ_HEAD(served_plmns_s, plmn_identity_s) served_plmns;
/* Number of group id in list */
uint8_t nb_group_id;
/* Served group id list */
STAILQ_HEAD(served_group_ids_s, served_group_id_s) served_group_ids;
/* Number of MME code */
uint8_t nb_mme_code;
/* MME Code to uniquely identify an MME within an MME pool area */
STAILQ_HEAD(mme_codes_s, mme_code_s) mme_codes;
/* Next GUMMEI element */
STAILQ_ENTRY(served_gummei_s) next;
};
struct ngap_gNB_instance_s;
/* This structure describes association of a gNB to a MME */
typedef struct ngap_gNB_mme_data_s {
/* MME descriptors tree, ordered by sctp assoc id */
RB_ENTRY(ngap_gNB_mme_data_s) entry;
/* This is the optional name provided by the MME */
char *mme_name;
/* MME NGAP IP address */
net_ip_address_t mme_s1_ip;
/* List of served GUMMEI per MME. There is one GUMMEI per RAT with a max
* number of 8 RATs but in our case only one is used. The LTE related pool
* configuration is included on the first place in the list.
*/
STAILQ_HEAD(served_gummeis_s, served_gummei_s) served_gummei;
/* Relative processing capacity of an MME with respect to the other MMEs
* in the pool in order to load-balance MMEs within a pool as defined
* in TS 23.401.
*/
uint8_t relative_mme_capacity;
/* Current MME overload information (if any). */
ngap_overload_state_t overload_state;
/* Current gNB->MME NGAP association state */
ngap_gNB_state_t state;
/* Next usable stream for UE signalling */
int32_t nextstream;
/* Number of input/ouput streams */
uint16_t in_streams;
uint16_t out_streams;
/* Connexion id used between SCTP/NGAP */
uint16_t cnx_id;
/* SCTP association id */
int32_t assoc_id;
/* This is served PLMN IDs communicated to the MME via an index over the
* MCC/MNC array in ngap_gNB_instance */
uint8_t broadcast_plmn_num;
uint8_t broadcast_plmn_index[PLMN_LIST_MAX_SIZE];
/* Only meaningfull in virtual mode */
struct ngap_gNB_instance_s *ngap_gNB_instance;
} ngap_gNB_mme_data_t;
typedef struct ngap_gNB_instance_s {
/* Next ngap gNB association.
* Only used for virtual mode.
*/
STAILQ_ENTRY(ngap_gNB_instance_s) ngap_gNB_entries;
/* Number of MME requested by gNB (tree size) */
uint32_t ngap_mme_nb;
/* Number of MME for which association is pending */
uint32_t ngap_mme_pending_nb;
/* Number of MME successfully associated to gNB */
uint32_t ngap_mme_associated_nb;
/* Tree of NGAP MME associations ordered by association ID */
RB_HEAD(ngap_mme_map, ngap_gNB_mme_data_s) ngap_mme_head;
/* TODO: add a map ordered by relative MME capacity */
/* Tree of UE ordered by gNB_ue_ngap_id's */
RB_HEAD(ngap_ue_map, ngap_gNB_ue_context_s) ngap_ue_head;
/* For virtual mode, mod_id as defined in the rest of the L1/L2 stack */
instance_t instance;
/* Displayable name of gNB */
char *gNB_name;
/* Unique gNB_id to identify the gNB within EPC.
* In our case the gNB is a macro gNB so the id will be 20 bits long.
* For Home gNB id, this field should be 28 bits long.
*/
uint32_t gNB_id;
/* The type of the cell */
enum cell_type_e cell_type;
/* Tracking area code */
uint16_t tac;
/* gNB NGAP IP address */
net_ip_address_t gNB_s1_ip;
/* Mobile Country Code
* Mobile Network Code
*/
uint16_t mcc[PLMN_LIST_MAX_SIZE];
uint16_t mnc[PLMN_LIST_MAX_SIZE];
uint8_t mnc_digit_length[PLMN_LIST_MAX_SIZE];
uint8_t num_plmn;
/* Default Paging DRX of the gNB as defined in TS 36.304 */
paging_drx_t default_drx;
} ngap_gNB_instance_t;
typedef struct {
/* List of served gNBs
* Only used for virtual mode
*/
STAILQ_HEAD(ngap_gNB_instances_head_s, ngap_gNB_instance_s) ngap_gNB_instances_head;
/* Nb of registered gNBs */
uint8_t nb_registered_gNBs;
/* Generate a unique connexion id used between NGAP and SCTP */
uint16_t global_cnx_id;
} ngap_gNB_internal_data_t;
int ngap_gNB_compare_assoc_id(
struct ngap_gNB_mme_data_s *p1, struct ngap_gNB_mme_data_s *p2);
/* Generate the tree management functions */
RB_PROTOTYPE(ngap_mme_map, ngap_gNB_mme_data_s, entry,
ngap_gNB_compare_assoc_id);
#endif /* NGAP_GNB_DEFS_H_ */
openair3/NGAP/ngap_gNB_encoder.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ngap_gNB_encoder.c
* \brief ngap pdu encode procedures for gNB
* \author Sebastien ROUX and Navid Nikaein
* \email navid.nikaein@eurecom.fr
* \date 2013 - 2015
* \version 0.1
*/
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include "assertions.h"
#include "conversions.h"
#include "intertask_interface.h"
#include "ngap_common.h"
#include "ngap_gNB_encoder.h"
static inline int ngap_gNB_encode_initiating(NGAP_NGAP_PDU_t *pdu,
uint8_t **buffer,
uint32_t *len);
static inline int ngap_gNB_encode_successfull_outcome(NGAP_NGAP_PDU_t *pdu,
uint8_t **buffer, uint32_t *len);
static inline int ngap_gNB_encode_unsuccessfull_outcome(NGAP_NGAP_PDU_t *pdu,
uint8_t **buffer, uint32_t *len);
int ngap_gNB_encode_pdu(NGAP_NGAP_PDU_t *pdu, uint8_t **buffer, uint32_t *len) {
int ret = -1;
DevAssert(pdu != NULL);
DevAssert(buffer != NULL);
DevAssert(len != NULL);
switch(pdu->present) {
case NGAP_NGAP_PDU_PR_initiatingMessage:
ret = ngap_gNB_encode_initiating(pdu, buffer, len);
break;
case NGAP_NGAP_PDU_PR_successfulOutcome:
ret = ngap_gNB_encode_successfull_outcome(pdu, buffer, len);
break;
case NGAP_NGAP_PDU_PR_unsuccessfulOutcome:
ret = ngap_gNB_encode_unsuccessfull_outcome(pdu, buffer, len);
break;
default:
NGAP_DEBUG("Unknown message outcome (%d) or not implemented",
(int)pdu->present);
return -1;
}
ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_NGAP_NGAP_PDU, pdu);
return ret;
}
static inline
int ngap_gNB_encode_initiating(NGAP_NGAP_PDU_t *pdu,
uint8_t **buffer, uint32_t *len) {
asn_encode_to_new_buffer_result_t res = { NULL, {0, NULL, NULL} };
DevAssert(pdu != NULL);
switch(pdu->choice.initiatingMessage.procedureCode) {
case NGAP_ProcedureCode_id_S1Setup:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_uplinkNASTransport:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_UECapabilityInfoIndication:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_initialUEMessage:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_NASNonDeliveryIndication:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_UEContextReleaseRequest:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_PathSwitchRequest:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_E_RABModificationIndication:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
default:
NGAP_DEBUG("Unknown procedure ID (%d) for initiating message\n",
(int)pdu->choice.initiatingMessage.procedureCode);
return -1;
}
if (asn1_xer_print) {
xer_fprint(stdout, &asn_DEF_NGAP_NGAP_PDU, (void *)pdu);
}
memset(&res, 0, sizeof(res));
res = asn_encode_to_new_buffer(NULL, ATS_ALIGNED_CANONICAL_PER, &asn_DEF_NGAP_NGAP_PDU, pdu);
*buffer = res.buffer;
*len = res.result.encoded;
return 0;
}
static inline
int ngap_gNB_encode_successfull_outcome(NGAP_NGAP_PDU_t *pdu,
uint8_t **buffer, uint32_t *len) {
asn_encode_to_new_buffer_result_t res = { NULL, {0, NULL, NULL} };
DevAssert(pdu != NULL);
switch(pdu->choice.successfulOutcome.procedureCode) {
case NGAP_ProcedureCode_id_InitialContextSetup:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_UEContextRelease:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
case NGAP_ProcedureCode_id_E_RABSetup:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
NGAP_INFO("E_RABSetup successful message\n");
break;
case NGAP_ProcedureCode_id_E_RABModify:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
NGAP_INFO("E_RABModify successful message\n");
break;
case NGAP_ProcedureCode_id_E_RABRelease:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
NGAP_INFO("E_RAB Release successful message\n");
break;
default:
NGAP_WARN("Unknown procedure ID (%d) for successfull outcome message\n",
(int)pdu->choice.successfulOutcome.procedureCode);
return -1;
}
if (asn1_xer_print) {
xer_fprint(stdout, &asn_DEF_NGAP_NGAP_PDU, (void *)pdu);
}
memset(&res, 0, sizeof(res));
res = asn_encode_to_new_buffer(NULL, ATS_ALIGNED_CANONICAL_PER, &asn_DEF_NGAP_NGAP_PDU, pdu);
*buffer = res.buffer;
*len = res.result.encoded;
return 0;
}
static inline
int ngap_gNB_encode_unsuccessfull_outcome(NGAP_NGAP_PDU_t *pdu,
uint8_t **buffer, uint32_t *len) {
asn_encode_to_new_buffer_result_t res = { NULL, {0, NULL, NULL} };
DevAssert(pdu != NULL);
switch(pdu->choice.unsuccessfulOutcome.procedureCode) {
case NGAP_ProcedureCode_id_InitialContextSetup:
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_NGAP_NGAP_PDU, pdu);
free(res.buffer);
break;
default:
NGAP_DEBUG("Unknown procedure ID (%d) for unsuccessfull outcome message\n",
(int)pdu->choice.unsuccessfulOutcome.procedureCode);
return -1;
}
if (asn1_xer_print) {
xer_fprint(stdout, &asn_DEF_NGAP_NGAP_PDU, (void *)pdu);
}
memset(&res, 0, sizeof(res));
res = asn_encode_to_new_buffer(NULL, ATS_ALIGNED_CANONICAL_PER, &asn_DEF_NGAP_NGAP_PDU, pdu);
*buffer = res.buffer;
*len = res.result.encoded;
return 0;
}
openair3/NGAP/ngap_gNB_encoder.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_GNB_ENCODER_H_
#define NGAP_GNB_ENCODER_H_
int ngap_gNB_encode_pdu(NGAP_NGAP_PDU_t *pdu, uint8_t **buffer, uint32_t *len)
__attribute__ ((warn_unused_result));
#endif /* NGAP_GNB_ENCODER_H_ */
openair3/NGAP/ngap_gNB_handlers.c
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openair3/NGAP/ngap_gNB_handlers.h
+30
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_GNB_HANDLERS_H_
#define NGAP_GNB_HANDLERS_H_
void ngap_handle_s1_setup_message(ngap_gNB_mme_data_t *mme_desc_p, int sctp_shutdown);
int ngap_gNB_handle_message(uint32_t assoc_id, int32_t stream,
const uint8_t * const data, const uint32_t data_length);
#endif /* NGAP_GNB_HANDLERS_H_ */
openair3/NGAP/ngap_gNB_itti_messaging.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include "intertask_interface.h"
#include "ngap_gNB_itti_messaging.h"
void ngap_gNB_itti_send_sctp_data_req(instance_t instance, int32_t assoc_id, uint8_t *buffer,
uint32_t buffer_length, uint16_t stream)
{
MessageDef *message_p;
sctp_data_req_t *sctp_data_req;
message_p = itti_alloc_new_message(TASK_NGAP, SCTP_DATA_REQ);
sctp_data_req = &message_p->ittiMsg.sctp_data_req;
sctp_data_req->assoc_id = assoc_id;
sctp_data_req->buffer = buffer;
sctp_data_req->buffer_length = buffer_length;
sctp_data_req->stream = stream;
itti_send_msg_to_task(TASK_SCTP, instance, message_p);
}
void ngap_gNB_itti_send_nas_downlink_ind(instance_t instance,
uint16_t ue_initial_id,
uint32_t gNB_ue_ngap_id,
uint8_t *nas_pdu,
uint32_t nas_pdu_length)
{
MessageDef *message_p;
ngap_downlink_nas_t *ngap_downlink_nas;
message_p = itti_alloc_new_message(TASK_NGAP, NGAP_DOWNLINK_NAS);
ngap_downlink_nas = &message_p->ittiMsg.ngap_downlink_nas;
ngap_downlink_nas->ue_initial_id = ue_initial_id;
ngap_downlink_nas->gNB_ue_ngap_id = gNB_ue_ngap_id;
ngap_downlink_nas->nas_pdu.buffer = malloc(sizeof(uint8_t) * nas_pdu_length);
memcpy(ngap_downlink_nas->nas_pdu.buffer, nas_pdu, nas_pdu_length);
ngap_downlink_nas->nas_pdu.length = nas_pdu_length;
itti_send_msg_to_task(TASK_RRC_GNB, instance, message_p);
}
void ngap_gNB_itti_send_sctp_close_association(instance_t instance, int32_t assoc_id)
{
MessageDef *message_p = NULL;
sctp_close_association_t *sctp_close_association_p = NULL;
message_p = itti_alloc_new_message(TASK_NGAP, SCTP_CLOSE_ASSOCIATION);
sctp_close_association_p = &message_p->ittiMsg.sctp_close_association;
sctp_close_association_p->assoc_id = assoc_id;
itti_send_msg_to_task(TASK_SCTP, instance, message_p);
}
openair3/NGAP/ngap_gNB_itti_messaging.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_GNB_ITTI_MESSAGING_H_
#define NGAP_GNB_ITTI_MESSAGING_H_
void ngap_gNB_itti_send_sctp_data_req(instance_t instance, int32_t assoc_id, uint8_t *buffer,
uint32_t buffer_length, uint16_t stream);
void ngap_gNB_itti_send_nas_downlink_ind(instance_t instance,
uint16_t ue_initial_id,
uint32_t gNB_ue_ngap_id,
uint8_t *nas_pdu,
uint32_t nas_pdu_length);
void ngap_gNB_itti_send_sctp_close_association(instance_t instance,
int32_t assoc_id);
#endif /* NGAP_GNB_ITTI_MESSAGING_H_ */
openair3/NGAP/ngap_gNB_management_procedures.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ngap_gNB_management_procedures.c
* \brief NGAP gNB task
* \author S. Roux and Navid Nikaein
* \date 2010 - 2016
* \email: navid.nikaein@eurecom.fr
* \version 1.0
* @ingroup _ngap
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "intertask_interface.h"
#include "assertions.h"
#include "conversions.h"
#include "ngap_common.h"
#include "ngap_gNB_defs.h"
#include "ngap_gNB.h"
ngap_gNB_internal_data_t ngap_gNB_internal_data;
RB_GENERATE(ngap_mme_map, ngap_gNB_mme_data_s, entry, ngap_gNB_compare_assoc_id);
int ngap_gNB_compare_assoc_id(
struct ngap_gNB_mme_data_s *p1, struct ngap_gNB_mme_data_s *p2)
{
if (p1->assoc_id == -1) {
if (p1->cnx_id < p2->cnx_id) {
return -1;
}
if (p1->cnx_id > p2->cnx_id) {
return 1;
}
} else {
if (p1->assoc_id < p2->assoc_id) {
return -1;
}
if (p1->assoc_id > p2->assoc_id) {
return 1;
}
}
/* Matching reference */
return 0;
}
uint16_t ngap_gNB_fetch_add_global_cnx_id(void)
{
return ++ngap_gNB_internal_data.global_cnx_id;
}
void ngap_gNB_prepare_internal_data(void)
{
memset(&ngap_gNB_internal_data, 0, sizeof(ngap_gNB_internal_data));
STAILQ_INIT(&ngap_gNB_internal_data.ngap_gNB_instances_head);
}
void ngap_gNB_insert_new_instance(ngap_gNB_instance_t *new_instance_p)
{
DevAssert(new_instance_p != NULL);
STAILQ_INSERT_TAIL(&ngap_gNB_internal_data.ngap_gNB_instances_head,
new_instance_p, ngap_gNB_entries);
}
struct ngap_gNB_mme_data_s *ngap_gNB_get_MME(
ngap_gNB_instance_t *instance_p,
int32_t assoc_id, uint16_t cnx_id)
{
struct ngap_gNB_mme_data_s temp;
struct ngap_gNB_mme_data_s *found;
memset(&temp, 0, sizeof(struct ngap_gNB_mme_data_s));
temp.assoc_id = assoc_id;
temp.cnx_id = cnx_id;
if (instance_p == NULL) {
STAILQ_FOREACH(instance_p, &ngap_gNB_internal_data.ngap_gNB_instances_head,
ngap_gNB_entries) {
found = RB_FIND(ngap_mme_map, &instance_p->ngap_mme_head, &temp);
if (found != NULL) {
return found;
}
}
} else {
return RB_FIND(ngap_mme_map, &instance_p->ngap_mme_head, &temp);
}
return NULL;
}
struct ngap_gNB_mme_data_s *ngap_gNB_get_MME_from_instance(
ngap_gNB_instance_t *instance_p)
{
struct ngap_gNB_mme_data_s *mme = NULL;
struct ngap_gNB_mme_data_s *mme_next = NULL;
for (mme = RB_MIN(ngap_mme_map, &instance_p->ngap_mme_head); mme!=NULL ; mme = mme_next) {
mme_next = RB_NEXT(ngap_mme_map, &instance_p->ngap_mme_head, mme);
if (mme->ngap_gNB_instance == instance_p) {
return mme;
}
}
return NULL;
}
ngap_gNB_instance_t *ngap_gNB_get_instance(instance_t instance)
{
ngap_gNB_instance_t *temp = NULL;
STAILQ_FOREACH(temp, &ngap_gNB_internal_data.ngap_gNB_instances_head,
ngap_gNB_entries) {
if (temp->instance == instance) {
/* Matching occurence */
return temp;
}
}
return NULL;
}
void ngap_gNB_remove_mme_desc(ngap_gNB_instance_t * instance)
{
struct ngap_gNB_mme_data_s *mme = NULL;
struct ngap_gNB_mme_data_s *mmeNext = NULL;
struct plmn_identity_s* plmnInfo;
struct served_group_id_s* groupInfo;
struct served_gummei_s* gummeiInfo;
struct mme_code_s* mmeCode;
for (mme = RB_MIN(ngap_mme_map, &instance->ngap_mme_head); mme; mme = mmeNext) {
mmeNext = RB_NEXT(ngap_mme_map, &instance->ngap_mme_head, mme);
RB_REMOVE(ngap_mme_map, &instance->ngap_mme_head, mme);
while (!STAILQ_EMPTY(&mme->served_gummei)) {
gummeiInfo = STAILQ_FIRST(&mme->served_gummei);
STAILQ_REMOVE_HEAD(&mme->served_gummei, next);
while (!STAILQ_EMPTY(&gummeiInfo->served_plmns)) {
plmnInfo = STAILQ_FIRST(&gummeiInfo->served_plmns);
STAILQ_REMOVE_HEAD(&gummeiInfo->served_plmns, next);
free(plmnInfo);
}
while (!STAILQ_EMPTY(&gummeiInfo->served_group_ids)) {
groupInfo = STAILQ_FIRST(&gummeiInfo->served_group_ids);
STAILQ_REMOVE_HEAD(&gummeiInfo->served_group_ids, next);
free(groupInfo);
}
while (!STAILQ_EMPTY(&gummeiInfo->mme_codes)) {
mmeCode = STAILQ_FIRST(&gummeiInfo->mme_codes);
STAILQ_REMOVE_HEAD(&gummeiInfo->mme_codes, next);
free(mmeCode);
}
free(gummeiInfo);
}
free(mme);
}
}
openair3/NGAP/ngap_gNB_management_procedures.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_GNB_MANAGEMENT_PROCEDURES_H_
#define NGAP_GNB_MANAGEMENT_PROCEDURES_H_
struct ngap_gNB_mme_data_s *ngap_gNB_get_MME(
ngap_gNB_instance_t *instance_p,
int32_t assoc_id, uint16_t cnx_id);
struct ngap_gNB_mme_data_s *ngap_gNB_get_MME_from_instance(ngap_gNB_instance_t *instance_p);
void ngap_gNB_remove_mme_desc(ngap_gNB_instance_t * instance);
void ngap_gNB_insert_new_instance(ngap_gNB_instance_t *new_instance_p);
ngap_gNB_instance_t *ngap_gNB_get_instance(uint8_t mod_id);
uint16_t ngap_gNB_fetch_add_global_cnx_id(void);
void ngap_gNB_prepare_internal_data(void);
#endif /* NGAP_GNB_MANAGEMENT_PROCEDURES_H_ */
openair3/NGAP/ngap_gNB_nas_procedures.c
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openair3/NGAP/ngap_gNB_nas_procedures.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_GNB_NAS_PROCEDURES_H_
#define NGAP_GNB_NAS_PROCEDURES_H_
int ngap_gNB_handle_nas_downlink(
uint32_t assoc_id,
uint32_t stream,
NGAP_NGAP_PDU_t *pdu);
int ngap_gNB_nas_uplink(instance_t instance, ngap_uplink_nas_t *ngap_uplink_nas_p);
int ngap_gNB_nas_non_delivery_ind(instance_t instance,
ngap_nas_non_delivery_ind_t *ngap_nas_non_delivery_ind);
int ngap_gNB_handle_nas_first_req(
instance_t instance, ngap_nas_first_req_t *ngap_nas_first_req_p);
int ngap_gNB_initial_ctxt_resp(
instance_t instance, ngap_initial_context_setup_resp_t *initial_ctxt_resp_p);
int ngap_gNB_ue_capabilities(instance_t instance,
ngap_ue_cap_info_ind_t *ue_cap_info_ind_p);
int ngap_gNB_e_rab_setup_resp(instance_t instance,
ngap_e_rab_setup_resp_t *e_rab_setup_resp_p);
int ngap_gNB_e_rab_modify_resp(instance_t instance,
ngap_e_rab_modify_resp_t *e_rab_modify_resp_p);
int ngap_gNB_e_rab_release_resp(instance_t instance,
ngap_e_rab_release_resp_t *e_rab_release_resp_p);
int ngap_gNB_path_switch_req(instance_t instance,
ngap_path_switch_req_t *path_switch_req_p);
int ngap_gNB_generate_E_RAB_Modification_Indication(
instance_t instance, ngap_e_rab_modification_ind_t *e_rab_modification_ind);
#endif /* NGAP_GNB_NAS_PROCEDURES_H_ */
openair3/NGAP/ngap_gNB_nnsf.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ngap_gNB_nnsf.c
* \brief ngap NAS node selection functions
* \author Sebastien ROUX <sebastien.roux@eurecom.fr>
* \date 2012
* \version 0.1
*/
#include <stdio.h>
#include <stdlib.h>
#include "intertask_interface.h"
#include "ngap_common.h"
#include "ngap_gNB_defs.h"
#include "ngap_gNB_nnsf.h"
struct ngap_gNB_mme_data_s *
ngap_gNB_nnsf_select_mme(ngap_gNB_instance_t *instance_p,
rrc_establishment_cause_t cause)
{
struct ngap_gNB_mme_data_s *mme_data_p = NULL;
struct ngap_gNB_mme_data_s *mme_highest_capacity_p = NULL;
uint8_t current_capacity = 0;
RB_FOREACH(mme_data_p, ngap_mme_map, &instance_p->ngap_mme_head) {
if (mme_data_p->state != NGAP_GNB_STATE_CONNECTED) {
/* The association between MME and gNB is not ready for the moment,
* go to the next known MME.
*/
if (mme_data_p->state == NGAP_GNB_OVERLOAD) {
/* MME is overloaded. We have to check the RRC establishment
* cause and take decision to the select this MME depending on
* the overload state.
*/
if ((cause == RRC_CAUSE_MO_DATA)
&& (mme_data_p->overload_state == NGAP_OVERLOAD_REJECT_MO_DATA)) {
continue;
}
if ((mme_data_p->overload_state == NGAP_OVERLOAD_REJECT_ALL_SIGNALLING)
&& ((cause == RRC_CAUSE_MO_SIGNALLING) || (cause == RRC_CAUSE_MO_DATA))) {
continue;
}
if ((mme_data_p->overload_state == NGAP_OVERLOAD_ONLY_EMERGENCY_AND_MT)
&& ((cause == RRC_CAUSE_MO_SIGNALLING) || (cause == RRC_CAUSE_MO_DATA)
|| (cause == RRC_CAUSE_HIGH_PRIO_ACCESS))) {
continue;
}
/* At this point, the RRC establishment can be handled by the MME
* even if it is in overload state.
*/
} else {
/* The MME is not overloaded, association is simply not ready. */
continue;
}
}
if (current_capacity < mme_data_p->relative_mme_capacity) {
/* We find a better MME, keep a reference to it */
current_capacity = mme_data_p->relative_mme_capacity;
mme_highest_capacity_p = mme_data_p;
}
}
return mme_highest_capacity_p;
}
struct ngap_gNB_mme_data_s *
ngap_gNB_nnsf_select_mme_by_plmn_id(ngap_gNB_instance_t *instance_p,
rrc_establishment_cause_t cause,
int selected_plmn_identity)
{
struct ngap_gNB_mme_data_s *mme_data_p = NULL;
struct ngap_gNB_mme_data_s *mme_highest_capacity_p = NULL;
uint8_t current_capacity = 0;
RB_FOREACH(mme_data_p, ngap_mme_map, &instance_p->ngap_mme_head) {
struct served_gummei_s *gummei_p = NULL;
struct plmn_identity_s *served_plmn_p = NULL;
if (mme_data_p->state != NGAP_GNB_STATE_CONNECTED) {
/* The association between MME and gNB is not ready for the moment,
* go to the next known MME.
*/
if (mme_data_p->state == NGAP_GNB_OVERLOAD) {
/* MME is overloaded. We have to check the RRC establishment
* cause and take decision to the select this MME depending on
* the overload state.
*/
if ((cause == RRC_CAUSE_MO_DATA)
&& (mme_data_p->overload_state == NGAP_OVERLOAD_REJECT_MO_DATA)) {
continue;
}
if ((mme_data_p->overload_state == NGAP_OVERLOAD_REJECT_ALL_SIGNALLING)
&& ((cause == RRC_CAUSE_MO_SIGNALLING) || (cause == RRC_CAUSE_MO_DATA))) {
continue;
}
if ((mme_data_p->overload_state == NGAP_OVERLOAD_ONLY_EMERGENCY_AND_MT)
&& ((cause == RRC_CAUSE_MO_SIGNALLING) || (cause == RRC_CAUSE_MO_DATA)
|| (cause == RRC_CAUSE_HIGH_PRIO_ACCESS))) {
continue;
}
/* At this point, the RRC establishment can be handled by the MME
* even if it is in overload state.
*/
} else {
/* The MME is not overloaded, association is simply not ready. */
continue;
}
}
/* Looking for served GUMMEI PLMN Identity selected matching the one provided by the UE */
STAILQ_FOREACH(gummei_p, &mme_data_p->served_gummei, next) {
STAILQ_FOREACH(served_plmn_p, &gummei_p->served_plmns, next) {
if ((served_plmn_p->mcc == instance_p->mcc[selected_plmn_identity]) &&
(served_plmn_p->mnc == instance_p->mnc[selected_plmn_identity])) {
break;
}
}
/* if found, we can stop the outer loop, too */
if (served_plmn_p) break;
}
/* if we didn't find such a served PLMN, go on with the next MME */
if (!served_plmn_p) continue;
if (current_capacity < mme_data_p->relative_mme_capacity) {
/* We find a better MME, keep a reference to it */
current_capacity = mme_data_p->relative_mme_capacity;
mme_highest_capacity_p = mme_data_p;
}
}
return mme_highest_capacity_p;
}
struct ngap_gNB_mme_data_s *
ngap_gNB_nnsf_select_mme_by_mme_code(ngap_gNB_instance_t *instance_p,
rrc_establishment_cause_t cause,
int selected_plmn_identity,
uint8_t mme_code)
{
struct ngap_gNB_mme_data_s *mme_data_p = NULL;
RB_FOREACH(mme_data_p, ngap_mme_map, &instance_p->ngap_mme_head) {
struct served_gummei_s *gummei_p = NULL;
if (mme_data_p->state != NGAP_GNB_STATE_CONNECTED) {
/* The association between MME and gNB is not ready for the moment,
* go to the next known MME.
*/
if (mme_data_p->state == NGAP_GNB_OVERLOAD) {
/* MME is overloaded. We have to check the RRC establishment
* cause and take decision to the select this MME depending on
* the overload state.
*/
if ((cause == RRC_CAUSE_MO_DATA)
&& (mme_data_p->overload_state == NGAP_OVERLOAD_REJECT_MO_DATA)) {
continue;
}
if ((mme_data_p->overload_state == NGAP_OVERLOAD_REJECT_ALL_SIGNALLING)
&& ((cause == RRC_CAUSE_MO_SIGNALLING) || (cause == RRC_CAUSE_MO_DATA))) {
continue;
}
if ((mme_data_p->overload_state == NGAP_OVERLOAD_ONLY_EMERGENCY_AND_MT)
&& ((cause == RRC_CAUSE_MO_SIGNALLING) || (cause == RRC_CAUSE_MO_DATA)
|| (cause == RRC_CAUSE_HIGH_PRIO_ACCESS))) {
continue;
}
/* At this point, the RRC establishment can be handled by the MME
* even if it is in overload state.
*/
} else {
/* The MME is not overloaded, association is simply not ready. */
continue;
}
}
/* Looking for MME code matching the one provided by NAS */
STAILQ_FOREACH(gummei_p, &mme_data_p->served_gummei, next) {
struct mme_code_s *mme_code_p = NULL;
struct plmn_identity_s *served_plmn_p = NULL;
STAILQ_FOREACH(served_plmn_p, &gummei_p->served_plmns, next) {
if ((served_plmn_p->mcc == instance_p->mcc[selected_plmn_identity]) &&
(served_plmn_p->mnc == instance_p->mnc[selected_plmn_identity])) {
break;
}
}
STAILQ_FOREACH(mme_code_p, &gummei_p->mme_codes, next) {
if (mme_code_p->mme_code == mme_code) {
break;
}
}
/* The MME matches the parameters provided by the NAS layer ->
* the MME is knwown and the association is ready.
* Return the reference to the MME to use it for this UE.
*/
if (mme_code_p && served_plmn_p) {
return mme_data_p;
}
}
}
/* At this point no MME matches the selected PLMN and MME code. In this case,
* return NULL. That way the RRC layer should know about it and reject RRC
* connectivity. */
return NULL;
}
struct ngap_gNB_mme_data_s *
ngap_gNB_nnsf_select_mme_by_gummei(ngap_gNB_instance_t *instance_p,
rrc_establishment_cause_t cause,
ngap_gummei_t gummei)
{
struct ngap_gNB_mme_data_s *mme_data_p = NULL;
RB_FOREACH(mme_data_p, ngap_mme_map, &instance_p->ngap_mme_head) {
struct served_gummei_s *gummei_p = NULL;
if (mme_data_p->state != NGAP_GNB_STATE_CONNECTED) {
/* The association between MME and gNB is not ready for the moment,
* go to the next known MME.
*/
if (mme_data_p->state == NGAP_GNB_OVERLOAD) {
/* MME is overloaded. We have to check the RRC establishment
* cause and take decision to the select this MME depending on
* the overload state.
*/
if ((cause == RRC_CAUSE_MO_DATA)
&& (mme_data_p->overload_state == NGAP_OVERLOAD_REJECT_MO_DATA)) {
continue;
}
if ((mme_data_p->overload_state == NGAP_OVERLOAD_REJECT_ALL_SIGNALLING)
&& ((cause == RRC_CAUSE_MO_SIGNALLING) || (cause == RRC_CAUSE_MO_DATA))) {
continue;
}
if ((mme_data_p->overload_state == NGAP_OVERLOAD_ONLY_EMERGENCY_AND_MT)
&& ((cause == RRC_CAUSE_MO_SIGNALLING) || (cause == RRC_CAUSE_MO_DATA)
|| (cause == RRC_CAUSE_HIGH_PRIO_ACCESS))) {
continue;
}
/* At this point, the RRC establishment can be handled by the MME
* even if it is in overload state.
*/
} else {
/* The MME is not overloaded, association is simply not ready. */
continue;
}
}
/* Looking for MME gummei matching the one provided by NAS */
STAILQ_FOREACH(gummei_p, &mme_data_p->served_gummei, next) {
struct served_group_id_s *group_id_p = NULL;
struct mme_code_s *mme_code_p = NULL;
struct plmn_identity_s *served_plmn_p = NULL;
STAILQ_FOREACH(served_plmn_p, &gummei_p->served_plmns, next) {
if ((served_plmn_p->mcc == gummei.mcc) &&
(served_plmn_p->mnc == gummei.mnc)) {
break;
}
}
STAILQ_FOREACH(mme_code_p, &gummei_p->mme_codes, next) {
if (mme_code_p->mme_code == gummei.mme_code) {
break;
}
}
STAILQ_FOREACH(group_id_p, &gummei_p->served_group_ids, next) {
if (group_id_p->mme_group_id == gummei.mme_group_id) {
break;
}
}
/* The MME matches the parameters provided by the NAS layer ->
* the MME is knwown and the association is ready.
* Return the reference to the MME to use it for this UE.
*/
if ((group_id_p != NULL) &&
(mme_code_p != NULL) &&
(served_plmn_p != NULL)) {
return mme_data_p;
}
}
}
/* At this point no MME matches the provided GUMMEI. In this case, return
* NULL. That way the RRC layer should know about it and reject RRC
* connectivity. */
return NULL;
}
struct ngap_gNB_mme_data_s *
ngap_gNB_nnsf_select_mme_by_gummei_no_cause(ngap_gNB_instance_t *instance_p,
ngap_gummei_t gummei)
{
struct ngap_gNB_mme_data_s *mme_data_p = NULL;
struct ngap_gNB_mme_data_s *mme_highest_capacity_p = NULL;
uint8_t current_capacity = 0;
RB_FOREACH(mme_data_p, ngap_mme_map, &instance_p->ngap_mme_head) {
struct served_gummei_s *gummei_p = NULL;
if (mme_data_p->state != NGAP_GNB_STATE_CONNECTED) {
/* The association between MME and gNB is not ready for the moment,
* go to the next known MME.
*/
if (mme_data_p->state == NGAP_GNB_OVERLOAD) {
/* MME is overloaded. We have to check the RRC establishment
* cause and take decision to the select this MME depending on
* the overload state.
*/
} else {
/* The MME is not overloaded, association is simply not ready. */
continue;
}
}
if (current_capacity < mme_data_p->relative_mme_capacity) {
/* We find a better MME, keep a reference to it */
current_capacity = mme_data_p->relative_mme_capacity;
mme_highest_capacity_p = mme_data_p;
}
/* Looking for MME gummei matching the one provided by NAS */
STAILQ_FOREACH(gummei_p, &mme_data_p->served_gummei, next) {
struct served_group_id_s *group_id_p = NULL;
struct mme_code_s *mme_code_p = NULL;
struct plmn_identity_s *served_plmn_p = NULL;
STAILQ_FOREACH(served_plmn_p, &gummei_p->served_plmns, next) {
if ((served_plmn_p->mcc == gummei.mcc) &&
(served_plmn_p->mnc == gummei.mnc)) {
break;
}
}
STAILQ_FOREACH(mme_code_p, &gummei_p->mme_codes, next) {
if (mme_code_p->mme_code == gummei.mme_code) {
break;
}
}
STAILQ_FOREACH(group_id_p, &gummei_p->served_group_ids, next) {
if (group_id_p->mme_group_id == gummei.mme_group_id) {
break;
}
}
/* The MME matches the parameters provided by the NAS layer ->
* the MME is knwown and the association is ready.
* Return the reference to the MME to use it for this UE.
*/
if ((group_id_p != NULL) &&
(mme_code_p != NULL) &&
(served_plmn_p != NULL)) {
return mme_data_p;
}
}
}
/* At this point no MME matches the provided GUMMEI. Select the one with the
* highest relative capacity.
* In case the list of known MME is empty, simply return NULL, that way the RRC
* layer should know about it and reject RRC connectivity.
*/
return mme_highest_capacity_p;
}
openair3/NGAP/ngap_gNB_nnsf.h
+49
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@@ -0,0 +1,49 @@
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_GNB_NNSF_H_
#define NGAP_GNB_NNSF_H_
struct ngap_gNB_mme_data_s *
ngap_gNB_nnsf_select_mme(ngap_gNB_instance_t *instance_p,
rrc_establishment_cause_t cause);
struct ngap_gNB_mme_data_s *
ngap_gNB_nnsf_select_mme_by_plmn_id(ngap_gNB_instance_t *instance_p,
rrc_establishment_cause_t cause,
int selected_plmn_identity);
struct ngap_gNB_mme_data_s*
ngap_gNB_nnsf_select_mme_by_mme_code(ngap_gNB_instance_t *instance_p,
rrc_establishment_cause_t cause,
int selected_plmn_identity,
uint8_t mme_code);
struct ngap_gNB_mme_data_s*
ngap_gNB_nnsf_select_mme_by_gummei(ngap_gNB_instance_t *instance_p,
rrc_establishment_cause_t cause,
ngap_gummei_t gummei);
struct ngap_gNB_mme_data_s*
ngap_gNB_nnsf_select_mme_by_gummei_no_cause(ngap_gNB_instance_t *instance_p,
ngap_gummei_t gummei);
#endif /* NGAP_GNB_NNSF_H_ */
openair3/NGAP/ngap_gNB_overload.c
+106
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ngap_gNB_overload.c
* \brief ngap procedures for overload messages within gNB
* \author Sebastien ROUX <sebastien.roux@eurecom.fr>
* \date 2012
* \version 0.1
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "intertask_interface.h"
#include "ngap_common.h"
#include "ngap_gNB_defs.h"
#include "ngap_gNB.h"
#include "ngap_gNB_ue_context.h"
#include "ngap_gNB_encoder.h"
#include "ngap_gNB_overload.h"
#include "ngap_gNB_management_procedures.h"
#include "assertions.h"
int ngap_gNB_handle_overload_start(uint32_t assoc_id,
uint32_t stream,
NGAP_NGAP_PDU_t *pdu)
{
ngap_gNB_mme_data_t *mme_desc_p;
NGAP_OverloadStart_t *container;
NGAP_OverloadStartIEs_t *ie;
DevAssert(pdu != NULL);
container = &pdu->choice.initiatingMessage.value.choice.OverloadStart;
NGAP_FIND_PROTOCOLIE_BY_ID(NGAP_OverloadStartIEs_t, ie, container,
NGAP_ProtocolIE_ID_id_OverloadResponse, true);
if (ie != NULL) {
DevCheck(ie->value.choice.OverloadResponse.present ==
NGAP_OverloadResponse_PR_overloadAction,
NGAP_OverloadResponse_PR_overloadAction, 0, 0);
}
/* Non UE-associated signalling -> stream 0 */
DevCheck(stream == 0, stream, 0, 0);
if ((mme_desc_p = ngap_gNB_get_MME(NULL, assoc_id, 0)) == NULL) {
/* No MME context associated */
return -1;
}
/* Mark the MME as overloaded and set the overload state according to
* the value received.
*/
mme_desc_p->state = NGAP_GNB_OVERLOAD;
mme_desc_p->overload_state =
ie->value.choice.OverloadResponse.choice.overloadAction;
return 0;
}
int ngap_gNB_handle_overload_stop(uint32_t assoc_id,
uint32_t stream,
NGAP_NGAP_PDU_t *pdu)
{
/* We received Overload stop message, meaning that the MME is no more
* overloaded. This is an empty message, with only message header and no
* Information Element.
*/
DevAssert(pdu != NULL);
ngap_gNB_mme_data_t *mme_desc_p;
/* Non UE-associated signalling -> stream 0 */
DevCheck(stream == 0, stream, 0, 0);
if ((mme_desc_p = ngap_gNB_get_MME(NULL, assoc_id, 0)) == NULL) {
/* No MME context associated */
return -1;
}
mme_desc_p->state = NGAP_GNB_STATE_CONNECTED;
mme_desc_p->overload_state = NGAP_NO_OVERLOAD;
return 0;
}
openair3/NGAP/ngap_gNB_overload.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_GNB_OVERLOAD_H_
#define NGAP_GNB_OVERLOAD_H_
/**
* \brief Handle an overload start message
**/
// int ngap_gNB_handle_overload_start(gNB_mme_desc_t *gNB_desc_p,
// sctp_queue_item_t *packet_p,
// struct ngap_message_s *message_p);
int ngap_gNB_handle_overload_start(uint32_t assoc_id,
uint32_t stream,
NGAP_NGAP_PDU_t *pdu);
/**
* \brief Handle an overload stop message
**/
// int ngap_gNB_handle_overload_stop(gNB_mme_desc_t *gNB_desc_p,
// sctp_queue_item_t *packet_p,
// struct ngap_message_s *message_p);
int ngap_gNB_handle_overload_stop(uint32_t assoc_id,
uint32_t stream,
NGAP_NGAP_PDU_t *pdu);
#endif /* NGAP_GNB_OVERLOAD_H_ */
openair3/NGAP/ngap_gNB_trace.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <stdint.h>
#include "assertions.h"
#include "intertask_interface.h"
#include "ngap_gNB_default_values.h"
#include "ngap_common.h"
#include "ngap_gNB_defs.h"
#include "ngap_gNB.h"
#include "ngap_gNB_ue_context.h"
#include "ngap_gNB_encoder.h"
#include "ngap_gNB_trace.h"
#include "ngap_gNB_itti_messaging.h"
#include "ngap_gNB_management_procedures.h"
static
void ngap_gNB_generate_trace_failure(struct ngap_gNB_ue_context_s *ue_desc_p,
NGAP_E_UTRAN_Trace_ID_t *trace_id,
NGAP_Cause_t *cause_p)
{
NGAP_NGAP_PDU_t pdu;
NGAP_TraceFailureIndication_t *out;
NGAP_TraceFailureIndicationIEs_t *ie;
uint8_t *buffer = NULL;
uint32_t length;
DevAssert(ue_desc_p != NULL);
DevAssert(trace_id != NULL);
DevAssert(cause_p != NULL);
/* Prepare the NGAP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = NGAP_NGAP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = NGAP_ProcedureCode_id_TraceFailureIndication;
pdu.choice.initiatingMessage.criticality = NGAP_Criticality_ignore;
pdu.choice.initiatingMessage.value.present = NGAP_InitiatingMessage__value_PR_TraceFailureIndication;
out = &pdu.choice.initiatingMessage.value.choice.TraceFailureIndication;
/* mandatory */
ie = (NGAP_TraceFailureIndicationIEs_t *)calloc(1, sizeof(NGAP_TraceFailureIndicationIEs_t));
ie->id = NGAP_ProtocolIE_ID_id_MME_UE_NGAP_ID;
ie->criticality = NGAP_Criticality_reject;
ie->value.present = NGAP_TraceFailureIndicationIEs__value_PR_MME_UE_NGAP_ID;
ie->value.choice.MME_UE_NGAP_ID = ue_desc_p->mme_ue_ngap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (NGAP_TraceFailureIndicationIEs_t *)calloc(1, sizeof(NGAP_TraceFailureIndicationIEs_t));
ie->id = NGAP_ProtocolIE_ID_id_gNB_UE_NGAP_ID;
ie->criticality = NGAP_Criticality_reject;
ie->value.present = NGAP_TraceFailureIndicationIEs__value_PR_GNB_UE_NGAP_ID;
ie->value.choice.GNB_UE_NGAP_ID = ue_desc_p->gNB_ue_ngap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (NGAP_TraceFailureIndicationIEs_t *)calloc(1, sizeof(NGAP_TraceFailureIndicationIEs_t));
ie->id = NGAP_ProtocolIE_ID_id_E_UTRAN_Trace_ID;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_TraceFailureIndicationIEs__value_PR_E_UTRAN_Trace_ID;
memcpy(&ie->value.choice.E_UTRAN_Trace_ID, trace_id, sizeof(NGAP_E_UTRAN_Trace_ID_t));
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (NGAP_TraceFailureIndicationIEs_t *)calloc(1, sizeof(NGAP_TraceFailureIndicationIEs_t));
ie->id = NGAP_ProtocolIE_ID_id_Cause;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_TraceFailureIndicationIEs__value_PR_Cause;
memcpy(&ie->value.choice.Cause, cause_p, sizeof(NGAP_Cause_t));
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
if (ngap_gNB_encode_pdu(&pdu, &buffer, &length) < 0) {
return;
}
ngap_gNB_itti_send_sctp_data_req(ue_desc_p->mme_ref->ngap_gNB_instance->instance,
ue_desc_p->mme_ref->assoc_id, buffer,
length, ue_desc_p->tx_stream);
}
int ngap_gNB_handle_trace_start(uint32_t assoc_id,
uint32_t stream,
NGAP_NGAP_PDU_t *pdu)
{
NGAP_TraceStart_t *container;
NGAP_TraceStartIEs_t *ie;
struct ngap_gNB_ue_context_s *ue_desc_p = NULL;
struct ngap_gNB_mme_data_s *mme_ref_p;
DevAssert(pdu != NULL);
container = &pdu->choice.initiatingMessage.value.choice.TraceStart;
NGAP_FIND_PROTOCOLIE_BY_ID(NGAP_TraceStartIEs_t, ie, container,
NGAP_ProtocolIE_ID_id_gNB_UE_NGAP_ID, TRUE);
mme_ref_p = ngap_gNB_get_MME(NULL, assoc_id, 0);
DevAssert(mme_ref_p != NULL);
if (ie != NULL) {
ue_desc_p = ngap_gNB_get_ue_context(mme_ref_p->ngap_gNB_instance,
ie->value.choice.GNB_UE_NGAP_ID);
}
if (ue_desc_p == NULL) {
/* Could not find context associated with this gNB_ue_ngap_id -> generate
* trace failure indication.
*/
NGAP_E_UTRAN_Trace_ID_t trace_id;
NGAP_Cause_t cause;
memset(&trace_id, 0, sizeof(NGAP_E_UTRAN_Trace_ID_t));
memset(&cause, 0, sizeof(NGAP_Cause_t));
cause.present = NGAP_Cause_PR_radioNetwork;
cause.choice.radioNetwork = NGAP_CauseRadioNetwork_unknown_pair_ue_ngap_id;
ngap_gNB_generate_trace_failure(NULL, &trace_id, &cause);
}
return 0;
}
int ngap_gNB_handle_deactivate_trace(uint32_t assoc_id,
uint32_t stream,
NGAP_NGAP_PDU_t *message_p)
{
// NGAP_DeactivateTraceIEs_t *deactivate_trace_p;
//
// deactivate_trace_p = &message_p->msg.deactivateTraceIEs;
return 0;
}
openair3/NGAP/ngap_gNB_trace.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef NGAP_GNB_TRACE_H_
#define NGAP_GNB_TRACE_H_
// int ngap_gNB_generate_trace_failure(sctp_data_t *sctp_data_p,
// int32_t stream,
// uint32_t gNB_ue_ngap_id,
// uint32_t mme_ue_ngap_id,
// E_UTRAN_Trace_ID_t *trace_id,
// Cause_t *cause_p);
// int ngap_gNB_handle_trace_start(gNB_mme_desc_t *gNB_desc_p,
// sctp_queue_item_t *packet_p,
// struct ngap_message_s *message_p);
int ngap_gNB_handle_trace_start(uint32_t assoc_id,
uint32_t stream,
NGAP_NGAP_PDU_t *pdu);
// int ngap_gNB_handle_deactivate_trace(gNB_mme_desc_t *gNB_desc_p,
// sctp_queue_item_t *packet_p,
// struct ngap_message_s *message_p);
int ngap_gNB_handle_deactivate_trace(uint32_t assoc_id,
uint32_t stream,
NGAP_NGAP_PDU_t *pdu);
#endif /* NGAP_GNB_TRACE_H_ */
openair3/NGAP/ngap_gNB_ue_context.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ngap_gNB_ue_context.c
* \brief ngap UE context management within gNB
* \author Sebastien ROUX <sebastien.roux@eurecom.fr>
* \date 2012
* \version 0.1
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include "tree.h"
#include "intertask_interface.h"
#include "ngap_common.h"
#include "ngap_gNB_defs.h"
#include "ngap_gNB_ue_context.h"
int ngap_gNB_compare_gNB_ue_ngap_id(
struct ngap_gNB_ue_context_s *p1, struct ngap_gNB_ue_context_s *p2)
{
if (p1->gNB_ue_ngap_id > p2->gNB_ue_ngap_id) {
return 1;
}
if (p1->gNB_ue_ngap_id < p2->gNB_ue_ngap_id) {
return -1;
}
return 0;
}
/* Generate the tree management functions */
RB_GENERATE(ngap_ue_map, ngap_gNB_ue_context_s, entries,
ngap_gNB_compare_gNB_ue_ngap_id);
struct ngap_gNB_ue_context_s *ngap_gNB_allocate_new_UE_context(void)
{
struct ngap_gNB_ue_context_s *new_p;
new_p = malloc(sizeof(struct ngap_gNB_ue_context_s));
if (new_p == NULL) {
NGAP_ERROR("Cannot allocate new ue context\n");
return NULL;
}
memset(new_p, 0, sizeof(struct ngap_gNB_ue_context_s));
return new_p;
}
struct ngap_gNB_ue_context_s *ngap_gNB_get_ue_context(
ngap_gNB_instance_t *instance_p,
uint32_t gNB_ue_ngap_id)
{
ngap_gNB_ue_context_t temp;
memset(&temp, 0, sizeof(struct ngap_gNB_ue_context_s));
/* gNB ue ngap id = 24 bits wide */
temp.gNB_ue_ngap_id = gNB_ue_ngap_id & 0x00FFFFFF;
return RB_FIND(ngap_ue_map, &instance_p->ngap_ue_head, &temp);
}
void ngap_gNB_free_ue_context(struct ngap_gNB_ue_context_s *ue_context_p)
{
if (ue_context_p == NULL) {
NGAP_ERROR("Trying to free a NULL context\n");
return;
}
/* TODO: check that context is currently not in the tree of known
* contexts.
*/
free(ue_context_p);
}
openair3/NGAP/ngap_gNB_ue_context.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include "tree.h"
#include "queue.h"
#include "ngap_gNB_defs.h"
#ifndef NGAP_GNB_UE_CONTEXT_H_
#define NGAP_GNB_UE_CONTEXT_H_
// Forward declarations
struct ngap_gNB_mme_data_s;
struct ngap_ue_map;
struct gNB_mme_desc_s;
typedef enum {
/* UE has not been registered to a MME or UE association has failed. */
NGAP_UE_DECONNECTED = 0x0,
/* UE ngap state is waiting for initial context setup request message. */
NGAP_UE_WAITING_CSR = 0x1,
/* UE association is ready and bearers are established. */
NGAP_UE_CONNECTED = 0x2,
NGAP_UE_STATE_MAX,
} ngap_ue_state;
typedef struct ngap_gNB_ue_context_s {
/* Tree related data */
RB_ENTRY(ngap_gNB_ue_context_s) entries;
/* Uniquely identifies the UE between MME and gNB within the gNB.
* This id is encoded on 24bits.
*/
unsigned gNB_ue_ngap_id:24;
/* UE id for initial connection to NGAP */
uint16_t ue_initial_id;
/* Uniquely identifies the UE within MME. Encoded on 32 bits. */
uint32_t mme_ue_ngap_id;
/* Stream used for this particular UE */
int32_t tx_stream;
int32_t rx_stream;
/* Current UE state. */
ngap_ue_state ue_state;
/* Reference to MME data this UE is attached to */
struct ngap_gNB_mme_data_s *mme_ref;
/* Signaled by the UE in RRC Connection Setup Complete and used in NAS Uplink
* to route NAS messages correctly. 0-based, not 1-based as in TS 36.331
* 6.2.2 RRC Connection Setup Complete! */
int selected_plmn_identity;
/* Reference to gNB data this UE is attached to */
ngap_gNB_instance_t *gNB_instance;
} ngap_gNB_ue_context_t;
int ngap_gNB_compare_gNB_ue_ngap_id(
struct ngap_gNB_ue_context_s *p1, struct ngap_gNB_ue_context_s *p2);
/* Generate the tree management functions prototypes */
RB_PROTOTYPE(ngap_ue_map, ngap_gNB_ue_context_s, entries,
ngap_gNB_compare_gNB_ue_ngap_id);
struct ngap_gNB_ue_context_s *ngap_gNB_allocate_new_UE_context(void);
struct ngap_gNB_ue_context_s *ngap_gNB_get_ue_context(
ngap_gNB_instance_t *instance_p,
uint32_t gNB_ue_ngap_id);
void ngap_gNB_free_ue_context(struct ngap_gNB_ue_context_s *ue_context_p);
#endif /* NGAP_GNB_UE_CONTEXT_H_ */