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2a30567223a5edd95e2e5c748ea49db8efc37007
openairinterface5g/openair2/RRC/LITE/rrc_eNB_S1AP.c
T
Navid Nikaein 2a30567223 Additional RRC procedures (RRCConnectionReconfiguration) for dedicated bearer estatblishment triggered by S1AP messages. 
eNB mac scheduler for dedicated DTCH.
UE MAC logical channel prioritization with additional DTCH.
S1AP messages for dedicated bearer establishment (eNB and UE).
2015-11-09 12:03:11 +01:00

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50 KiB
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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
/*! \file rrc_eNB_S1AP.c
* \brief rrc S1AP procedures for eNB
* \author Laurent Winckel and Sebastien ROUX and Navid Nikaein and Lionel GAUTHIER
* \date 2013-2014
* \version 1.0
* \company Eurecom
* \email: navid.nikaein@eurecom.fr
*/
#if defined(ENABLE_USE_MME)
# include "defs.h"
# include "extern.h"
# include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
# include "RRC/LITE/MESSAGES/asn1_msg.h"
# include "RRC/LITE/defs.h"
# include "rrc_eNB_UE_context.h"
# include "rrc_eNB_S1AP.h"
# if defined(ENABLE_ITTI)
# include "asn1_conversions.h"
# include "intertask_interface.h"
# include "pdcp.h"
# include "pdcp_primitives.h"
# include "s1ap_eNB.h"
# else
# include "../../S1AP/s1ap_eNB.h"
# endif
#if defined(ENABLE_SECURITY)
# include "UTIL/OSA/osa_defs.h"
#endif
#include "msc.h"
/* Value to indicate an invalid UE initial id */
static const uint16_t UE_INITIAL_ID_INVALID = 0;
/* Masks for S1AP Encryption algorithms, EEA0 is always supported (not coded) */
static const uint16_t S1AP_ENCRYPTION_EEA1_MASK = 0x8000;
static const uint16_t S1AP_ENCRYPTION_EEA2_MASK = 0x4000;
/* Masks for S1AP Integrity algorithms, EIA0 is always supported (not coded) */
static const uint16_t S1AP_INTEGRITY_EIA1_MASK = 0x8000;
static const uint16_t S1AP_INTEGRITY_EIA2_MASK = 0x4000;
#ifdef Rel10
# define INTEGRITY_ALGORITHM_NONE SecurityAlgorithmConfig__integrityProtAlgorithm_eia0_v920
#else
#ifdef EXMIMO_IOT
# define INTEGRITY_ALGORITHM_NONE SecurityAlgorithmConfig__integrityProtAlgorithm_eia2
#else
# define INTEGRITY_ALGORITHM_NONE SecurityAlgorithmConfig__integrityProtAlgorithm_reserved
#endif
#endif
# if defined(ENABLE_ITTI)
//------------------------------------------------------------------------------
struct rrc_ue_s1ap_ids_s*
rrc_eNB_S1AP_get_ue_ids(
eNB_RRC_INST* const rrc_instance_pP,
const uint16_t ue_initial_id,
const uint32_t eNB_ue_s1ap_id
)
//------------------------------------------------------------------------------
{
rrc_ue_s1ap_ids_t *result = NULL;
rrc_ue_s1ap_ids_t *result2 = NULL;
hashtable_rc_t h_rc;
// we assume that a rrc_ue_s1ap_ids_s is initially inserted in initial_id2_s1ap_ids
if (eNB_ue_s1ap_id > 0) {
h_rc = hashtable_get(rrc_instance_pP->s1ap_id2_s1ap_ids, (hash_key_t)eNB_ue_s1ap_id, (void**)&result);
}
if (ue_initial_id != UE_INITIAL_ID_INVALID) {
h_rc = hashtable_get(rrc_instance_pP->initial_id2_s1ap_ids, (hash_key_t)ue_initial_id, (void**)&result);
if (h_rc == HASH_TABLE_OK) {
if (eNB_ue_s1ap_id > 0) {
h_rc = hashtable_get(rrc_instance_pP->s1ap_id2_s1ap_ids, (hash_key_t)eNB_ue_s1ap_id, (void**)&result2);
if (h_rc != HASH_TABLE_OK) {
result2 = malloc(sizeof(*result2));
if (NULL != result2) {
*result2 = *result;
result2->eNB_ue_s1ap_id = eNB_ue_s1ap_id;
result->eNB_ue_s1ap_id = eNB_ue_s1ap_id;
h_rc = hashtable_insert(rrc_instance_pP->s1ap_id2_s1ap_ids,
(hash_key_t)eNB_ue_s1ap_id,
result2);
if (h_rc != HASH_TABLE_OK) {
LOG_E(S1AP, "[eNB %u] Error while hashtable_insert in s1ap_id2_s1ap_ids eNB_ue_s1ap_id %u\n",
rrc_instance_pP - eNB_rrc_inst, eNB_ue_s1ap_id);
}
}
}
}
}
}
return result;
}
//------------------------------------------------------------------------------
void
rrc_eNB_S1AP_remove_ue_ids(
eNB_RRC_INST* const rrc_instance_pP,
struct rrc_ue_s1ap_ids_s* const ue_ids_pP
)
//------------------------------------------------------------------------------
{
const uint16_t ue_initial_id = ue_ids_pP->ue_initial_id;
const uint32_t eNB_ue_s1ap_id = ue_ids_pP->eNB_ue_s1ap_id;
hashtable_rc_t h_rc;
if (rrc_instance_pP == NULL) {
LOG_E(RRC, "Bad RRC instance\n");
return;
}
if (ue_ids_pP == NULL) {
LOG_E(RRC, "Trying to free a NULL S1AP UE IDs\n");
return;
}
if (eNB_ue_s1ap_id > 0) {
h_rc = hashtable_remove(rrc_instance_pP->s1ap_id2_s1ap_ids, (hash_key_t)eNB_ue_s1ap_id);
if (h_rc != HASH_TABLE_OK) {
LOG_W(RRC, "S1AP Did not find entry in hashtable s1ap_id2_s1ap_ids for eNB_ue_s1ap_id %u\n", eNB_ue_s1ap_id);
} else {
LOG_W(RRC, "S1AP removed entry in hashtable s1ap_id2_s1ap_ids for eNB_ue_s1ap_id %u\n", eNB_ue_s1ap_id);
}
}
if (ue_initial_id != UE_INITIAL_ID_INVALID) {
h_rc = hashtable_remove(rrc_instance_pP->initial_id2_s1ap_ids, (hash_key_t)ue_initial_id);
if (h_rc != HASH_TABLE_OK) {
LOG_W(RRC, "S1AP Did not find entry in hashtable initial_id2_s1ap_ids for ue_initial_id %u\n", ue_initial_id);
} else {
LOG_W(RRC, "S1AP removed entry in hashtable initial_id2_s1ap_ids for ue_initial_id %u\n", ue_initial_id);
}
}
}
/*! \fn uint16_t get_next_ue_initial_id(uint8_t mod_id)
*\brief provide an UE initial ID for S1AP initial communication.
*\param mod_id Instance ID of eNB.
*\return the UE initial ID.
*/
//------------------------------------------------------------------------------
static uint16_t
get_next_ue_initial_id(
const module_id_t mod_id
)
//------------------------------------------------------------------------------
{
static uint16_t ue_initial_id[NUMBER_OF_eNB_MAX];
ue_initial_id[mod_id]++;
/* Never use UE_INITIAL_ID_INVALID this is the invalid id! */
if (ue_initial_id[mod_id] == UE_INITIAL_ID_INVALID) {
ue_initial_id[mod_id]++;
}
return ue_initial_id[mod_id];
}
/*! \fn uint8_t get_UE_index_from_s1ap_ids(uint8_t mod_id, uint16_t ue_initial_id, uint32_t eNB_ue_s1ap_id)
*\brief retrieve UE index in the eNB from the UE initial ID if not equal to UE_INDEX_INVALID or
*\brief from the eNB_ue_s1ap_id previously transmitted by S1AP.
*\param mod_id Instance ID of eNB.
*\param ue_initial_id The UE initial ID sent to S1AP.
*\param eNB_ue_s1ap_id The value sent by S1AP.
*\return the UE index or UE_INDEX_INVALID if not found.
*/
static struct rrc_eNB_ue_context_s*
rrc_eNB_get_ue_context_from_s1ap_ids(
const instance_t instanceP,
const uint16_t ue_initial_idP,
const uint32_t eNB_ue_s1ap_idP
)
{
rrc_ue_s1ap_ids_t* temp = NULL;
temp =
rrc_eNB_S1AP_get_ue_ids(
&eNB_rrc_inst[ENB_INSTANCE_TO_MODULE_ID(instanceP)],
ue_initial_idP,
eNB_ue_s1ap_idP);
if (temp) {
return rrc_eNB_get_ue_context(
&eNB_rrc_inst[ENB_INSTANCE_TO_MODULE_ID(instanceP)],
temp->ue_rnti);
}
return NULL;
}
/*! \fn e_SecurityAlgorithmConfig__cipheringAlgorithm rrc_eNB_select_ciphering(uint16_t algorithms)
*\brief analyze available encryption algorithms bit mask and return the relevant one.
*\param algorithms The bit mask of available algorithms received from S1AP.
*\return the selected algorithm.
*/
static e_SecurityAlgorithmConfig__cipheringAlgorithm rrc_eNB_select_ciphering(uint16_t algorithms)
{
#warning "Forced return SecurityAlgorithmConfig__cipheringAlgorithm_eea0, to be deleted in future"
return SecurityAlgorithmConfig__cipheringAlgorithm_eea0;
if (algorithms & S1AP_ENCRYPTION_EEA2_MASK) {
return SecurityAlgorithmConfig__cipheringAlgorithm_eea2;
}
if (algorithms & S1AP_ENCRYPTION_EEA1_MASK) {
return SecurityAlgorithmConfig__cipheringAlgorithm_eea1;
}
return SecurityAlgorithmConfig__cipheringAlgorithm_eea0;
}
/*! \fn e_SecurityAlgorithmConfig__integrityProtAlgorithm rrc_eNB_select_integrity(uint16_t algorithms)
*\brief analyze available integrity algorithms bit mask and return the relevant one.
*\param algorithms The bit mask of available algorithms received from S1AP.
*\return the selected algorithm.
*/
static e_SecurityAlgorithmConfig__integrityProtAlgorithm rrc_eNB_select_integrity(uint16_t algorithms)
{
if (algorithms & S1AP_INTEGRITY_EIA2_MASK) {
return SecurityAlgorithmConfig__integrityProtAlgorithm_eia2;
}
if (algorithms & S1AP_INTEGRITY_EIA1_MASK) {
return SecurityAlgorithmConfig__integrityProtAlgorithm_eia1;
}
return INTEGRITY_ALGORITHM_NONE;
}
/*! \fn int rrc_eNB_process_security (uint8_t mod_id, uint8_t ue_index, security_capabilities_t *security_capabilities)
*\brief save and analyze available security algorithms bit mask and select relevant ones.
*\param mod_id Instance ID of eNB.
*\param ue_index Instance ID of UE in the eNB.
*\param security_capabilities The security capabilities received from S1AP.
*\return TRUE if at least one algorithm has been changed else FALSE.
*/
static int
rrc_eNB_process_security(
const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP,
security_capabilities_t* security_capabilities_pP
)
{
boolean_t changed = FALSE;
e_SecurityAlgorithmConfig__cipheringAlgorithm cipheringAlgorithm;
e_SecurityAlgorithmConfig__integrityProtAlgorithm integrityProtAlgorithm;
/* Save security parameters */
ue_context_pP->ue_context.security_capabilities = *security_capabilities_pP;
// translation
LOG_D(RRC,
"[eNB %d] NAS security_capabilities.encryption_algorithms %u AS ciphering_algorithm %u NAS security_capabilities.integrity_algorithms %u AS integrity_algorithm %u\n",
ctxt_pP->module_id,
ue_context_pP->ue_context.security_capabilities.encryption_algorithms,
ue_context_pP->ue_context.ciphering_algorithm,
ue_context_pP->ue_context.security_capabilities.integrity_algorithms,
ue_context_pP->ue_context.integrity_algorithm);
/* Select relevant algorithms */
cipheringAlgorithm = rrc_eNB_select_ciphering (ue_context_pP->ue_context.security_capabilities.encryption_algorithms);
if (ue_context_pP->ue_context.ciphering_algorithm != cipheringAlgorithm) {
ue_context_pP->ue_context.ciphering_algorithm = cipheringAlgorithm;
changed = TRUE;
}
integrityProtAlgorithm = rrc_eNB_select_integrity (ue_context_pP->ue_context.security_capabilities.integrity_algorithms);
if (ue_context_pP->ue_context.integrity_algorithm != integrityProtAlgorithm) {
ue_context_pP->ue_context.integrity_algorithm = integrityProtAlgorithm;
changed = TRUE;
}
LOG_I (RRC, "[eNB %d][UE %x] Selected security algorithms (%x): %x, %x, %s\n",
ctxt_pP->module_id,
ue_context_pP->ue_context.rnti,
security_capabilities_pP,
cipheringAlgorithm,
integrityProtAlgorithm,
changed ? "changed" : "same");
return changed;
}
/*! \fn void process_eNB_security_key (const protocol_ctxt_t* const ctxt_pP, eNB_RRC_UE_t * const ue_context_pP, uint8_t *security_key)
*\brief save security key.
*\param ctxt_pP Running context.
*\param ue_context_pP UE context.
*\param security_key_pP The security key received from S1AP.
*/
//------------------------------------------------------------------------------
static void process_eNB_security_key (
const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP,
uint8_t* security_key_pP
)
//------------------------------------------------------------------------------
{
#if defined(ENABLE_SECURITY)
char ascii_buffer[65];
uint8_t i;
/* Saves the security key */
memcpy (ue_context_pP->ue_context.kenb, security_key_pP, SECURITY_KEY_LENGTH);
for (i = 0; i < 32; i++) {
sprintf(&ascii_buffer[2 * i], "%02X", ue_context_pP->ue_context.kenb[i]);
}
ascii_buffer[2 * i] = '\0';
LOG_I (RRC, "[eNB %d][UE %x] Saved security key %s\n", ctxt_pP->module_id, ue_context_pP->ue_context.rnti, ascii_buffer);
#endif
}
//------------------------------------------------------------------------------
static void
rrc_pdcp_config_security(
const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP,
const uint8_t send_security_mode_command
)
//------------------------------------------------------------------------------
{
#if defined(ENABLE_SECURITY)
SRB_ToAddModList_t* SRB_configList = ue_context_pP->ue_context.SRB_configList;
uint8_t *kRRCenc = NULL;
uint8_t *kRRCint = NULL;
uint8_t *kUPenc = NULL;
pdcp_t *pdcp_p = NULL;
static int print_keys= 1;
hashtable_rc_t h_rc;
hash_key_t key;
/* Derive the keys from kenb */
if (SRB_configList != NULL) {
derive_key_up_enc(ue_context_pP->ue_context.ciphering_algorithm,
ue_context_pP->ue_context.kenb,
&kUPenc);
}
derive_key_rrc_enc(ue_context_pP->ue_context.ciphering_algorithm,
ue_context_pP->ue_context.kenb,
&kRRCenc);
derive_key_rrc_int(ue_context_pP->ue_context.integrity_algorithm,
ue_context_pP->ue_context.kenb,
&kRRCint);
#define DEBUG_SECURITY 1
#if defined (DEBUG_SECURITY)
#define msg printf
if (print_keys ==1 ) {
print_keys =0;
int i;
msg("\nKeNB:");
for(i = 0; i < 32; i++) {
msg("%02x", ue_context_pP->ue_context.kenb[i]);
}
msg("\n");
msg("\nKRRCenc:");
for(i = 0; i < 32; i++) {
msg("%02x", kRRCenc[i]);
}
msg("\n");
msg("\nKRRCint:");
for(i = 0; i < 32; i++) {
msg("%02x", kRRCint[i]);
}
msg("\n");
}
#endif //DEBUG_SECURITY
key = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag, DCCH, SRB_FLAG_YES);
h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p);
if (h_rc == HASH_TABLE_OK) {
pdcp_config_set_security(
ctxt_pP,
pdcp_p,
DCCH,
DCCH+2,
(send_security_mode_command == TRUE) ?
0 | (ue_context_pP->ue_context.integrity_algorithm << 4) :
(ue_context_pP->ue_context.ciphering_algorithm ) |
(ue_context_pP->ue_context.integrity_algorithm << 4),
kRRCenc,
kRRCint,
kUPenc);
} else {
LOG_E(RRC,
PROTOCOL_RRC_CTXT_UE_FMT"Could not get PDCP instance for SRB DCCH %u\n",
PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
DCCH);
}
#endif
}
//------------------------------------------------------------------------------
void
rrc_eNB_send_S1AP_INITIAL_CONTEXT_SETUP_RESP(
const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP
)
//------------------------------------------------------------------------------
{
MessageDef *msg_p = NULL;
int e_rab;
int e_rabs_done = 0;
int e_rabs_failed = 0;
msg_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_INITIAL_CONTEXT_SETUP_RESP);
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id;
for (e_rab = 0; e_rab < ue_context_pP->ue_context.nb_of_e_rabs; e_rab++) {
if (ue_context_pP->ue_context.e_rab[e_rab].status == E_RAB_STATUS_DONE) {
e_rabs_done++;
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs[e_rab].e_rab_id = ue_context_pP->ue_context.e_rab[e_rab].param.e_rab_id;
// TODO add other information from S1-U when it will be integrated
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs[e_rab].gtp_teid = ue_context_pP->ue_context.enb_gtp_teid[e_rab];
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs[e_rab].eNB_addr = ue_context_pP->ue_context.enb_gtp_addrs[e_rab];
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs[e_rab].eNB_addr.length = 4;
ue_context_pP->ue_context.e_rab[e_rab].status = E_RAB_STATUS_ESTABLISHED;
} else {
e_rabs_failed++;
ue_context_pP->ue_context.e_rab[e_rab].status = E_RAB_STATUS_FAILED;
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs_failed[e_rab].e_rab_id = ue_context_pP->ue_context.e_rab[e_rab].param.e_rab_id;
// TODO add cause when it will be integrated
}
}
MSC_LOG_TX_MESSAGE(
MSC_RRC_ENB,
MSC_S1AP_ENB,
(const char *)&S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p),
sizeof(s1ap_initial_context_setup_resp_t),
MSC_AS_TIME_FMT" INITIAL_CONTEXT_SETUP_RESP UE %X eNB_ue_s1ap_id %u e_rabs:%u succ %u fail",
MSC_AS_TIME_ARGS(ctxt_pP),
ue_context_pP->ue_id_rnti,
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).eNB_ue_s1ap_id,
e_rabs_done, e_rabs_failed);
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).nb_of_e_rabs = e_rabs_done;
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).nb_of_e_rabs_failed = e_rabs_failed;
itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p);
}
# endif
//------------------------------------------------------------------------------
void
rrc_eNB_send_S1AP_UPLINK_NAS(
const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP,
UL_DCCH_Message_t* const ul_dcch_msg
)
//------------------------------------------------------------------------------
{
#if defined(ENABLE_ITTI)
{
ULInformationTransfer_t *ulInformationTransfer = &ul_dcch_msg->message.choice.c1.choice.ulInformationTransfer;
if ((ulInformationTransfer->criticalExtensions.present == ULInformationTransfer__criticalExtensions_PR_c1)
&& (ulInformationTransfer->criticalExtensions.choice.c1.present
== ULInformationTransfer__criticalExtensions__c1_PR_ulInformationTransfer_r8)
&& (ulInformationTransfer->criticalExtensions.choice.c1.choice.ulInformationTransfer_r8.dedicatedInfoType.present
== ULInformationTransfer_r8_IEs__dedicatedInfoType_PR_dedicatedInfoNAS)) {
/* This message hold a dedicated info NAS payload, forward it to NAS */
struct ULInformationTransfer_r8_IEs__dedicatedInfoType *dedicatedInfoType =
&ulInformationTransfer->criticalExtensions.choice.c1.choice.ulInformationTransfer_r8.dedicatedInfoType;
uint32_t pdu_length;
uint8_t *pdu_buffer;
MessageDef *msg_p;
pdu_length = dedicatedInfoType->choice.dedicatedInfoNAS.size;
pdu_buffer = dedicatedInfoType->choice.dedicatedInfoNAS.buf;
msg_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_UPLINK_NAS);
S1AP_UPLINK_NAS (msg_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id;
S1AP_UPLINK_NAS (msg_p).nas_pdu.length = pdu_length;
S1AP_UPLINK_NAS (msg_p).nas_pdu.buffer = pdu_buffer;
itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p);
}
}
#else
{
ULInformationTransfer_t *ulInformationTransfer;
ulInformationTransfer =
&ul_dcch_msg->message.choice.c1.choice.
ulInformationTransfer;
if (ulInformationTransfer->criticalExtensions.present ==
ULInformationTransfer__criticalExtensions_PR_c1) {
if (ulInformationTransfer->criticalExtensions.choice.c1.present ==
ULInformationTransfer__criticalExtensions__c1_PR_ulInformationTransfer_r8) {
ULInformationTransfer_r8_IEs_t
*ulInformationTransferR8;
ulInformationTransferR8 =
&ulInformationTransfer->criticalExtensions.choice.
c1.choice.ulInformationTransfer_r8;
if (ulInformationTransferR8->dedicatedInfoType.
present ==
ULInformationTransfer_r8_IEs__dedicatedInfoType_PR_dedicatedInfoNAS)
s1ap_eNB_new_data_request (mod_id, ue_index,
ulInformationTransferR8->
dedicatedInfoType.choice.
dedicatedInfoNAS.buf,
ulInformationTransferR8->
dedicatedInfoType.choice.
dedicatedInfoNAS.size);
}
}
}
#endif
}
//------------------------------------------------------------------------------
void rrc_eNB_send_S1AP_UE_CAPABILITIES_IND(
const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP,
UL_DCCH_Message_t* ul_dcch_msg
)
//------------------------------------------------------------------------------
{
UECapabilityInformation_t *ueCapabilityInformation = &ul_dcch_msg->message.choice.c1.choice.ueCapabilityInformation;
if ((ueCapabilityInformation->criticalExtensions.present == UECapabilityInformation__criticalExtensions_PR_c1)
&& (ueCapabilityInformation->criticalExtensions.choice.c1.present
== UECapabilityInformation__criticalExtensions__c1_PR_ueCapabilityInformation_r8)
&& (ueCapabilityInformation->criticalExtensions.choice.c1.choice.ueCapabilityInformation_r8.ue_CapabilityRAT_ContainerList.list.count > 0)) {
UE_CapabilityRAT_ContainerList_t* ue_CapabilityRAT_ContainerList =
&ueCapabilityInformation->criticalExtensions.choice.c1.choice.ueCapabilityInformation_r8.ue_CapabilityRAT_ContainerList;
MessageDef *msg_p;
msg_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_UE_CAPABILITIES_IND);
S1AP_UE_CAPABILITIES_IND (msg_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id;
S1AP_UE_CAPABILITIES_IND (msg_p).ue_radio_cap.length = ue_CapabilityRAT_ContainerList->list.array[0]->ueCapabilityRAT_Container.size;
S1AP_UE_CAPABILITIES_IND (msg_p).ue_radio_cap.buffer = ue_CapabilityRAT_ContainerList->list.array[0]->ueCapabilityRAT_Container.buf;
itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p);
if (ue_CapabilityRAT_ContainerList->list.count > 1) {
LOG_W (RRC,"[eNB %d][UE %x] can only handle 1 UE capability RAT item for now (%d)\n",
ctxt_pP->module_id,
ue_context_pP->ue_context.rnti,
ue_CapabilityRAT_ContainerList->list.count);
}
}
}
//------------------------------------------------------------------------------
void
rrc_eNB_send_S1AP_NAS_FIRST_REQ(
const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP,
RRCConnectionSetupComplete_r8_IEs_t* rrcConnectionSetupComplete
)
//------------------------------------------------------------------------------
{
#if defined(ENABLE_ITTI)
{
MessageDef* message_p = NULL;
rrc_ue_s1ap_ids_t* rrc_ue_s1ap_ids_p = NULL;
hashtable_rc_t h_rc;
message_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_NAS_FIRST_REQ);
memset(&message_p->ittiMsg.s1ap_nas_first_req, 0, sizeof(s1ap_nas_first_req_t));
ue_context_pP->ue_context.ue_initial_id = get_next_ue_initial_id (ctxt_pP->module_id);
S1AP_NAS_FIRST_REQ (message_p).ue_initial_id = ue_context_pP->ue_context.ue_initial_id;
rrc_ue_s1ap_ids_p = malloc(sizeof(*rrc_ue_s1ap_ids_p));
rrc_ue_s1ap_ids_p->ue_initial_id = ue_context_pP->ue_context.ue_initial_id;
rrc_ue_s1ap_ids_p->eNB_ue_s1ap_id = UE_INITIAL_ID_INVALID;
rrc_ue_s1ap_ids_p->ue_rnti = ctxt_pP->rnti;
h_rc = hashtable_insert(eNB_rrc_inst[ctxt_pP->module_id].initial_id2_s1ap_ids,
(hash_key_t)ue_context_pP->ue_context.ue_initial_id,
rrc_ue_s1ap_ids_p);
if (h_rc != HASH_TABLE_OK) {
LOG_E(S1AP, "[eNB %d] Error while hashtable_insert in initial_id2_s1ap_ids ue_initial_id %u\n",
ctxt_pP->module_id, ue_context_pP->ue_context.ue_initial_id);
}
/* Assume that cause is coded in the same way in RRC and S1ap, just check that the value is in S1ap range */
AssertFatal(ue_context_pP->ue_context.establishment_cause < RRC_CAUSE_LAST,
"Establishment cause invalid (%jd/%d) for eNB %d!",
ue_context_pP->ue_context.establishment_cause, RRC_CAUSE_LAST, ctxt_pP->module_id);
S1AP_NAS_FIRST_REQ (message_p).establishment_cause = ue_context_pP->ue_context.establishment_cause;
/* Forward NAS message */S1AP_NAS_FIRST_REQ (message_p).nas_pdu.buffer =
rrcConnectionSetupComplete->dedicatedInfoNAS.buf;
S1AP_NAS_FIRST_REQ (message_p).nas_pdu.length = rrcConnectionSetupComplete->dedicatedInfoNAS.size;
/* Fill UE identities with available information */
{
S1AP_NAS_FIRST_REQ (message_p).ue_identity.presenceMask = UE_IDENTITIES_NONE;
if (ue_context_pP->ue_context.Initialue_identity_s_TMSI.presence) {
/* Fill s-TMSI */
UE_S_TMSI* s_TMSI = &ue_context_pP->ue_context.Initialue_identity_s_TMSI;
S1AP_NAS_FIRST_REQ (message_p).ue_identity.presenceMask |= UE_IDENTITIES_s_tmsi;
S1AP_NAS_FIRST_REQ (message_p).ue_identity.s_tmsi.mme_code = s_TMSI->mme_code;
S1AP_NAS_FIRST_REQ (message_p).ue_identity.s_tmsi.m_tmsi = s_TMSI->m_tmsi;
LOG_I(S1AP, "[eNB %d] Build S1AP_NAS_FIRST_REQ with s_TMSI: MME code %u M-TMSI %u ue %x\n",
ctxt_pP->module_id,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.s_tmsi.mme_code,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.s_tmsi.m_tmsi,
ue_context_pP->ue_context.rnti);
}
if (rrcConnectionSetupComplete->registeredMME != NULL) {
/* Fill GUMMEI */
struct RegisteredMME *r_mme = rrcConnectionSetupComplete->registeredMME;
S1AP_NAS_FIRST_REQ (message_p).ue_identity.presenceMask |= UE_IDENTITIES_gummei;
if (r_mme->plmn_Identity != NULL) {
if ((r_mme->plmn_Identity->mcc != NULL) && (r_mme->plmn_Identity->mcc->list.count > 0)) {
/* Use first indicated PLMN MCC if it is defined */
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mcc = *r_mme->plmn_Identity->mcc->list.array[0];
LOG_I(S1AP, "[eNB %d] Build S1AP_NAS_FIRST_REQ adding in s_TMSI: GUMMEI MCC %u ue %x\n",
ctxt_pP->module_id,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mcc,
ue_context_pP->ue_context.rnti);
}
if (r_mme->plmn_Identity->mnc.list.count > 0) {
/* Use first indicated PLMN MNC if it is defined */
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mnc = *r_mme->plmn_Identity->mnc.list.array[0];
LOG_I(S1AP, "[eNB %d] Build S1AP_NAS_FIRST_REQ adding in s_TMSI: GUMMEI MNC %u ue %x\n",
ctxt_pP->module_id,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mnc,
ue_context_pP->ue_context.rnti);
}
}
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mme_code = BIT_STRING_to_uint8 (&r_mme->mmec);
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mme_group_id = BIT_STRING_to_uint16 (&r_mme->mmegi);
MSC_LOG_TX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
(const char *)&message_p->ittiMsg.s1ap_nas_first_req,
sizeof(s1ap_nas_first_req_t),
MSC_AS_TIME_FMT" S1AP_NAS_FIRST_REQ eNB %u UE %x",
MSC_AS_TIME_ARGS(ctxt_pP),
ctxt_pP->module_id,
ctxt_pP->rnti);
LOG_I(S1AP, "[eNB %d] Build S1AP_NAS_FIRST_REQ adding in s_TMSI: GUMMEI mme_code %u mme_group_id %u ue %x\n",
ctxt_pP->module_id,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mme_code,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mme_group_id,
ue_context_pP->ue_context.rnti);
}
}
itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, message_p);
}
#else
{
s1ap_eNB_new_data_request (
ctxt_pP->module_id,
ue_context_pP,
rrcConnectionSetupComplete->dedicatedInfoNAS.
buf,
rrcConnectionSetupComplete->dedicatedInfoNAS.
size);
}
#endif
}
# if defined(ENABLE_ITTI)
//------------------------------------------------------------------------------
int
rrc_eNB_process_S1AP_DOWNLINK_NAS(
MessageDef* msg_p,
const char* msg_name,
instance_t instance,
mui_t* rrc_eNB_mui
)
//------------------------------------------------------------------------------
{
uint16_t ue_initial_id;
uint32_t eNB_ue_s1ap_id;
uint32_t length;
uint8_t *buffer;
struct rrc_eNB_ue_context_s* ue_context_p = NULL;
protocol_ctxt_t ctxt;
ue_initial_id = S1AP_DOWNLINK_NAS (msg_p).ue_initial_id;
eNB_ue_s1ap_id = S1AP_DOWNLINK_NAS (msg_p).eNB_ue_s1ap_id;
ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, ue_initial_id, eNB_ue_s1ap_id);
LOG_I(RRC, "[eNB %d] Received %s: ue_initial_id %d, eNB_ue_s1ap_id %d\n",
instance,
msg_name,
ue_initial_id,
eNB_ue_s1ap_id);
if (ue_context_p == NULL) {
MSC_LOG_RX_MESSAGE(
MSC_RRC_ENB,
MSC_S1AP_ENB,
NULL,
0,
MSC_AS_TIME_FMT" DOWNLINK-NAS UE initial id %u eNB_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
ue_initial_id,
eNB_ue_s1ap_id);
/* Can not associate this message to an UE index, send a failure to S1AP and discard it! */
MessageDef *msg_fail_p;
LOG_W(RRC, "[eNB %d] In S1AP_DOWNLINK_NAS: unknown UE from S1AP ids (%d, %d)\n", instance, ue_initial_id, eNB_ue_s1ap_id);
msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_NAS_NON_DELIVERY_IND);
S1AP_NAS_NON_DELIVERY_IND (msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id;
S1AP_NAS_NON_DELIVERY_IND (msg_fail_p).nas_pdu.length = S1AP_DOWNLINK_NAS (msg_p).nas_pdu.length;
S1AP_NAS_NON_DELIVERY_IND (msg_fail_p).nas_pdu.buffer = S1AP_DOWNLINK_NAS (msg_p).nas_pdu.buffer;
// TODO add failure cause when defined!
MSC_LOG_TX_MESSAGE(
MSC_RRC_ENB,
MSC_S1AP_ENB,
(const char *)NULL,
0,
MSC_AS_TIME_FMT" S1AP_NAS_NON_DELIVERY_IND UE initial id %u eNB_ue_s1ap_id %u (ue ctxt !found)",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
ue_initial_id,
eNB_ue_s1ap_id);
itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p);
return (-1);
} else {
PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0);
/* Is it the first income from S1AP ? */
if (ue_context_p->ue_context.eNB_ue_s1ap_id == 0) {
ue_context_p->ue_context.eNB_ue_s1ap_id = S1AP_DOWNLINK_NAS (msg_p).eNB_ue_s1ap_id;
}
MSC_LOG_RX_MESSAGE(
MSC_RRC_ENB,
MSC_S1AP_ENB,
(const char *)NULL,
0,
MSC_AS_TIME_FMT" DOWNLINK-NAS UE initial id %u eNB_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
ue_initial_id,
S1AP_DOWNLINK_NAS (msg_p).eNB_ue_s1ap_id);
/* Create message for PDCP (DLInformationTransfer_t) */
length = do_DLInformationTransfer (
instance,
&buffer,
rrc_eNB_get_next_transaction_identifier (instance),
S1AP_DOWNLINK_NAS (msg_p).nas_pdu.length,
S1AP_DOWNLINK_NAS (msg_p).nas_pdu.buffer);
#ifdef RRC_MSG_PRINT
int i=0;
LOG_F(RRC,"[MSG] RRC DL Information Transfer\n");
for (i = 0; i < length; i++) {
LOG_F(RRC,"%02x ", ((uint8_t*)buffer)[i]);
}
LOG_F(RRC,"\n");
#endif
/* Transfer data to PDCP */
pdcp_rrc_data_req (
&ctxt,
DCCH,
*rrc_eNB_mui++,
SDU_CONFIRM_NO,
length,
buffer,
PDCP_TRANSMISSION_MODE_CONTROL);
return (0);
}
}
int rrc_eNB_process_S1AP_E_RAB_SETUP_REQ(MessageDef *msg_p, const char *msg_name, instance_t instance)
{
uint16_t ue_initial_id;
uint32_t eNB_ue_s1ap_id;
MessageDef *message_gtpv1u_p = NULL;
gtpv1u_enb_create_tunnel_req_t create_tunnel_req;
gtpv1u_enb_create_tunnel_resp_t create_tunnel_resp;
struct rrc_eNB_ue_context_s* ue_context_p = NULL;
protocol_ctxt_t ctxt;
ue_initial_id = S1AP_E_RAB_SETUP_REQ (msg_p).ue_initial_id;
eNB_ue_s1ap_id = S1AP_E_RAB_SETUP_REQ (msg_p).eNB_ue_s1ap_id;
ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, ue_initial_id, eNB_ue_s1ap_id);
LOG_I(RRC, "[eNB %d] Received %s: ue_initial_id %d, eNB_ue_s1ap_id %d, nb_of_e_rabs %d\n",
instance, msg_name, ue_initial_id, eNB_ue_s1ap_id, S1AP_E_RAB_SETUP_REQ (msg_p).nb_e_rabs_tosetup);
if (ue_context_p == NULL) {
/* Can not associate this message to an UE index, send a failure to S1AP and discard it! */
MessageDef *msg_fail_p = NULL;
LOG_W(RRC, "[eNB %d] In S1AP_E_RAB_SETUP_REQ: unknown UE from S1AP ids (%d, %d)\n", instance, ue_initial_id, eNB_ue_s1ap_id);
msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_E_RAB_SETUP_REQUEST_FAIL);
S1AP_E_RAB_SETUP_REQ (msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id;
// TODO add failure cause when defined!
itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p);
return (-1);
} else {
PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0);
ue_context_p->ue_context.eNB_ue_s1ap_id = S1AP_E_RAB_SETUP_REQ (msg_p).eNB_ue_s1ap_id;
/* Save e RAB information for later */
{
int i;
memset(&create_tunnel_req, 0 , sizeof(create_tunnel_req));
uint8_t nb_e_rabs_tosetup = S1AP_E_RAB_SETUP_REQ (msg_p).nb_e_rabs_tosetup;
// keep the previous bearer
for (i = ue_context_p->ue_context.setup_e_rabs;
i < ue_context_p->ue_context.setup_e_rabs + nb_e_rabs_tosetup;
i++) {
if (ue_context_p->ue_context.e_rab[i].status == E_RAB_STATUS_DONE)
LOG_W(RRC,"E-RAB already configured, reconfiguring\n");
ue_context_p->ue_context.e_rab[i].status = E_RAB_STATUS_NEW;
ue_context_p->ue_context.e_rab[i].param = S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[i];
create_tunnel_req.eps_bearer_id[i] = S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[i].e_rab_id;
create_tunnel_req.sgw_S1u_teid[i] = S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[i].gtp_teid;
memcpy(&create_tunnel_req.sgw_addr[i],
& S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[i].sgw_addr,
sizeof(transport_layer_addr_t));
}
ue_context_p->ue_context.nb_of_e_rabs=nb_e_rabs_tosetup;
ue_context_p->ue_context.setup_e_rabs+=nb_e_rabs_tosetup;
create_tunnel_req.rnti = ue_context_p->ue_context.rnti; // warning put zero above
create_tunnel_req.num_tunnels = i;
// NN: not sure if we should create a new tunnel: need to check teid, etc.
gtpv1u_create_s1u_tunnel(
instance,
&create_tunnel_req,
&create_tunnel_resp);
rrc_eNB_process_GTPV1U_CREATE_TUNNEL_RESP(
&ctxt,
&create_tunnel_resp);
}
/* TODO parameters yet to process ... */
{
// S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).ue_ambr;
}
rrc_eNB_generate_dedicatedRRCConnectionReconfiguration(&ctxt, ue_context_p, 0);
return (0);
}
}
/*------------------------------------------------------------------------------*/
int rrc_eNB_process_S1AP_INITIAL_CONTEXT_SETUP_REQ(MessageDef *msg_p, const char *msg_name, instance_t instance)
{
uint16_t ue_initial_id;
uint32_t eNB_ue_s1ap_id;
MessageDef *message_gtpv1u_p = NULL;
gtpv1u_enb_create_tunnel_req_t create_tunnel_req;
gtpv1u_enb_create_tunnel_resp_t create_tunnel_resp;
struct rrc_eNB_ue_context_s* ue_context_p = NULL;
protocol_ctxt_t ctxt;
ue_initial_id = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).ue_initial_id;
eNB_ue_s1ap_id = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).eNB_ue_s1ap_id;
ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, ue_initial_id, eNB_ue_s1ap_id);
LOG_I(RRC, "[eNB %d] Received %s: ue_initial_id %d, eNB_ue_s1ap_id %d, nb_of_e_rabs %d\n",
instance, msg_name, ue_initial_id, eNB_ue_s1ap_id, S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).nb_of_e_rabs);
if (ue_context_p == NULL) {
/* Can not associate this message to an UE index, send a failure to S1AP and discard it! */
MessageDef *msg_fail_p = NULL;
LOG_W(RRC, "[eNB %d] In S1AP_INITIAL_CONTEXT_SETUP_REQ: unknown UE from S1AP ids (%d, %d)\n", instance, ue_initial_id, eNB_ue_s1ap_id);
msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_INITIAL_CONTEXT_SETUP_FAIL);
S1AP_INITIAL_CONTEXT_SETUP_FAIL (msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id;
// TODO add failure cause when defined!
itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p);
return (-1);
} else {
PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0);
ue_context_p->ue_context.eNB_ue_s1ap_id = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).eNB_ue_s1ap_id;
/* Save e RAB information for later */
{
int i;
memset(&create_tunnel_req, 0 , sizeof(create_tunnel_req));
ue_context_p->ue_context.nb_of_e_rabs = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).nb_of_e_rabs;
for (i = 0; i < ue_context_p->ue_context.nb_of_e_rabs; i++) {
ue_context_p->ue_context.e_rab[i].status = E_RAB_STATUS_NEW;
ue_context_p->ue_context.e_rab[i].param = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i];
create_tunnel_req.eps_bearer_id[i] = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i].e_rab_id;
create_tunnel_req.sgw_S1u_teid[i] = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i].gtp_teid;
memcpy(&create_tunnel_req.sgw_addr[i],
&S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i].sgw_addr,
sizeof(transport_layer_addr_t));
}
ue_context_p->ue_context.setup_e_rabs =ue_context_p->ue_context.nb_of_e_rabs;
create_tunnel_req.rnti = ue_context_p->ue_context.rnti; // warning put zero above
create_tunnel_req.num_tunnels = i;
gtpv1u_create_s1u_tunnel(
instance,
&create_tunnel_req,
&create_tunnel_resp);
rrc_eNB_process_GTPV1U_CREATE_TUNNEL_RESP(
&ctxt,
&create_tunnel_resp);
}
/* TODO parameters yet to process ... */
{
// S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).ue_ambr;
}
rrc_eNB_process_security (
&ctxt,
ue_context_p,
&S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).security_capabilities);
process_eNB_security_key (
&ctxt,
ue_context_p,
S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).security_key);
{
uint8_t send_security_mode_command = TRUE;
#ifndef EXMIMO_IOT
if ((ue_context_p->ue_context.ciphering_algorithm == SecurityAlgorithmConfig__cipheringAlgorithm_eea0)
&& (ue_context_p->ue_context.integrity_algorithm == INTEGRITY_ALGORITHM_NONE)) {
send_security_mode_command = FALSE;
}
#endif
rrc_pdcp_config_security(
&ctxt,
ue_context_p,
send_security_mode_command);
if (send_security_mode_command) {
rrc_eNB_generate_SecurityModeCommand (
&ctxt,
ue_context_p);
send_security_mode_command = FALSE;
// apply ciphering after RRC security command mode
rrc_pdcp_config_security(
&ctxt,
ue_context_p,
send_security_mode_command);
} else {
rrc_eNB_generate_UECapabilityEnquiry (&ctxt, ue_context_p);
}
}
return (0);
}
}
/*------------------------------------------------------------------------------*/
int rrc_eNB_process_S1AP_UE_CTXT_MODIFICATION_REQ(MessageDef *msg_p, const char *msg_name, instance_t instance)
{
uint32_t eNB_ue_s1ap_id;
struct rrc_eNB_ue_context_s* ue_context_p = NULL;
protocol_ctxt_t ctxt;
eNB_ue_s1ap_id = S1AP_UE_CTXT_MODIFICATION_REQ (msg_p).eNB_ue_s1ap_id;
ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, UE_INITIAL_ID_INVALID, eNB_ue_s1ap_id);
if (ue_context_p == NULL) {
/* Can not associate this message to an UE index, send a failure to S1AP and discard it! */
MessageDef *msg_fail_p;
LOG_W(RRC, "[eNB %d] In S1AP_UE_CTXT_MODIFICATION_REQ: unknown UE from eNB_ue_s1ap_id (%d) for eNB %d\n", instance, eNB_ue_s1ap_id);
msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_UE_CTXT_MODIFICATION_FAIL);
S1AP_UE_CTXT_MODIFICATION_FAIL (msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id;
// TODO add failure cause when defined!
itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p);
return (-1);
} else {
PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0);
/* TODO parameters yet to process ... */
{
if (S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).present & S1AP_UE_CONTEXT_MODIFICATION_UE_AMBR) {
// S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).ue_ambr;
}
}
if (S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).present & S1AP_UE_CONTEXT_MODIFICATION_UE_SECU_CAP) {
if (rrc_eNB_process_security (
&ctxt,
ue_context_p,
&S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).security_capabilities)) {
/* transmit the new security parameters to UE */
rrc_eNB_generate_SecurityModeCommand (
&ctxt,
ue_context_p);
}
}
if (S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).present & S1AP_UE_CONTEXT_MODIFICATION_SECURITY_KEY) {
process_eNB_security_key (
&ctxt,
ue_context_p,
S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).security_key);
/* TODO reconfigure lower layers... */
}
/* Send the response */
{
MessageDef *msg_resp_p;
msg_resp_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CTXT_MODIFICATION_RESP);
S1AP_UE_CTXT_MODIFICATION_RESP(msg_resp_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id;
itti_send_msg_to_task(TASK_S1AP, instance, msg_resp_p);
}
return (0);
}
}
/*------------------------------------------------------------------------------*/
int rrc_eNB_process_S1AP_UE_CONTEXT_RELEASE_REQ (MessageDef *msg_p, const char *msg_name, instance_t instance)
{
uint32_t eNB_ue_s1ap_id;
struct rrc_eNB_ue_context_s* ue_context_p = NULL;
eNB_ue_s1ap_id = S1AP_UE_CONTEXT_RELEASE_REQ(msg_p).eNB_ue_s1ap_id;
ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, UE_INITIAL_ID_INVALID, eNB_ue_s1ap_id);
if (ue_context_p == NULL) {
/* Can not associate this message to an UE index, send a failure to S1AP and discard it! */
MessageDef *msg_fail_p;
LOG_W(RRC, "[eNB %d] In S1AP_UE_CONTEXT_RELEASE_REQ: unknown UE from eNB_ue_s1ap_id (%d)\n",
instance,
eNB_ue_s1ap_id);
msg_fail_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_RESP); /* TODO change message ID. */
S1AP_UE_CONTEXT_RELEASE_RESP(msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id;
// TODO add failure cause when defined!
itti_send_msg_to_task(TASK_S1AP, instance, msg_fail_p);
return (-1);
} else {
/* TODO release context. */
/* Send the response */
{
MessageDef *msg_resp_p;
msg_resp_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_RESP);
S1AP_UE_CONTEXT_RELEASE_RESP(msg_resp_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id;
itti_send_msg_to_task(TASK_S1AP, instance, msg_resp_p);
}
return (0);
}
}
//------------------------------------------------------------------------------
void rrc_eNB_send_S1AP_UE_CONTEXT_RELEASE_REQ (
const module_id_t enb_mod_idP,
const rrc_eNB_ue_context_t* const ue_context_pP,
const s1ap_Cause_t causeP,
const long cause_valueP
)
//------------------------------------------------------------------------------
{
if (ue_context_pP == NULL) {
LOG_W(RRC,
"[eNB] In S1AP_UE_CONTEXT_RELEASE_COMMAND: invalid UE\n");
} else {
MSC_LOG_TX_MESSAGE(
MSC_RRC_ENB,
MSC_S1AP_ENB,
NULL,0,
"0 S1AP_UE_CONTEXT_RELEASE_REQ eNB_ue_s1ap_id 0x%06"PRIX32" ",
ue_context_pP->ue_context.eNB_ue_s1ap_id);
MessageDef *msg_context_release_req_p = NULL;
msg_context_release_req_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_REQ);
S1AP_UE_CONTEXT_RELEASE_REQ(msg_context_release_req_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id;
S1AP_UE_CONTEXT_RELEASE_REQ(msg_context_release_req_p).cause = causeP;
S1AP_UE_CONTEXT_RELEASE_REQ(msg_context_release_req_p).cause_value = cause_valueP;
itti_send_msg_to_task(TASK_S1AP, ENB_MODULE_ID_TO_INSTANCE(enb_mod_idP), msg_context_release_req_p);
}
}
/*------------------------------------------------------------------------------*/
int rrc_eNB_process_S1AP_UE_CONTEXT_RELEASE_COMMAND (MessageDef *msg_p, const char *msg_name, instance_t instance)
{
uint32_t eNB_ue_s1ap_id;
protocol_ctxt_t ctxt;
struct rrc_eNB_ue_context_s *ue_context_p = NULL;
struct rrc_ue_s1ap_ids_s *rrc_ue_s1ap_ids = NULL;
eNB_ue_s1ap_id = S1AP_UE_CONTEXT_RELEASE_COMMAND(msg_p).eNB_ue_s1ap_id;
ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, UE_INITIAL_ID_INVALID, eNB_ue_s1ap_id);
if (ue_context_p == NULL) {
/* Can not associate this message to an UE index */
MessageDef *msg_complete_p;
LOG_W(RRC,
"[eNB %d] In S1AP_UE_CONTEXT_RELEASE_COMMAND: unknown UE from eNB_ue_s1ap_id (%d)\n",
instance,
eNB_ue_s1ap_id);
MSC_LOG_EVENT(
MSC_RRC_ENB,
"0 S1AP_UE_CONTEXT_RELEASE_COMPLETE eNB_ue_s1ap_id 0x%06"PRIX32" context not found",
eNB_ue_s1ap_id);
MSC_LOG_TX_MESSAGE(
MSC_RRC_ENB,
MSC_S1AP_ENB,
NULL,0,
"0 S1AP_UE_CONTEXT_RELEASE_COMPLETE eNB_ue_s1ap_id 0x%06"PRIX32" ",
eNB_ue_s1ap_id);
msg_complete_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_COMPLETE);
S1AP_UE_CONTEXT_RELEASE_COMPLETE(msg_complete_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id;
itti_send_msg_to_task(TASK_S1AP, instance, msg_complete_p);
rrc_ue_s1ap_ids = rrc_eNB_S1AP_get_ue_ids(
&eNB_rrc_inst[instance],
UE_INITIAL_ID_INVALID,
eNB_ue_s1ap_id);
if (NULL != rrc_ue_s1ap_ids) {
rrc_eNB_S1AP_remove_ue_ids(
&eNB_rrc_inst[instance],
rrc_ue_s1ap_ids);
}
return (-1);
} else {
PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0);
rrc_eNB_generate_RRCConnectionRelease(&ctxt, ue_context_p);
/*
LOG_W(RRC,
"[eNB %d] In S1AP_UE_CONTEXT_RELEASE_COMMAND: TODO call rrc_eNB_connection_release for eNB %d\n",
instance,
eNB_ue_s1ap_id);
*/
{
int e_rab;
int mod_id = 0;
MessageDef *msg_delete_tunnels_p = NULL;
MSC_LOG_TX_MESSAGE(
MSC_RRC_ENB,
MSC_GTPU_ENB,
NULL,0,
"0 GTPV1U_ENB_DELETE_TUNNEL_REQ rnti %x ",
eNB_ue_s1ap_id);
msg_delete_tunnels_p = itti_alloc_new_message(TASK_RRC_ENB, GTPV1U_ENB_DELETE_TUNNEL_REQ);
memset(&GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p),
0,
sizeof(GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p)));
// do not wait response
GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p).rnti = ue_context_p->ue_context.rnti;
for (e_rab = 0; e_rab < ue_context_p->ue_context.nb_of_e_rabs; e_rab++) {
GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p).eps_bearer_id[GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_p).num_erab++] =
ue_context_p->ue_context.enb_gtp_ebi[e_rab];
// erase data
ue_context_p->ue_context.enb_gtp_teid[e_rab] = 0;
memset(&ue_context_p->ue_context.enb_gtp_addrs[e_rab], 0, sizeof(ue_context_p->ue_context.enb_gtp_addrs[e_rab]));
ue_context_p->ue_context.enb_gtp_ebi[e_rab] = 0;
}
itti_send_msg_to_task(TASK_GTPV1_U, instance, msg_delete_tunnels_p);
MSC_LOG_TX_MESSAGE(
MSC_RRC_ENB,
MSC_S1AP_ENB,
NULL,0,
"0 S1AP_UE_CONTEXT_RELEASE_COMPLETE eNB_ue_s1ap_id 0x%06"PRIX32" ",
eNB_ue_s1ap_id);
MessageDef *msg_complete_p = NULL;
msg_complete_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_COMPLETE);
S1AP_UE_CONTEXT_RELEASE_COMPLETE(msg_complete_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id;
itti_send_msg_to_task(TASK_S1AP, instance, msg_complete_p);
rrc_ue_s1ap_ids = rrc_eNB_S1AP_get_ue_ids(
&eNB_rrc_inst[instance],
UE_INITIAL_ID_INVALID,
eNB_ue_s1ap_id);
if (NULL != rrc_ue_s1ap_ids) {
rrc_eNB_S1AP_remove_ue_ids(
&eNB_rrc_inst[instance],
rrc_ue_s1ap_ids);
}
}
return (0);
}
}
rrc_eNB_send_S1AP_E_RAB_SETUP_RESP(const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP){
MessageDef *msg_p = NULL;
int e_rab;
int e_rabs_done = 0;
int e_rabs_failed = 0;
msg_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_E_RAB_SETUP_RESP);
S1AP_E_RAB_SETUP_RESP (msg_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id;
for (e_rab = ue_context_pP->ue_context.setup_e_rabs - ue_context_pP->ue_context.nb_of_e_rabs;
e_rab < ue_context_pP->ue_context.setup_e_rabs; e_rab++) {
if (ue_context_pP->ue_context.e_rab[e_rab].status == E_RAB_STATUS_DONE) {
e_rabs_done++;
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rab].e_rab_id = ue_context_pP->ue_context.e_rab[e_rab].param.e_rab_id;
// TODO add other information from S1-U when it will be integrated
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rab].gtp_teid = ue_context_pP->ue_context.enb_gtp_teid[e_rab];
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rab].eNB_addr = ue_context_pP->ue_context.enb_gtp_addrs[e_rab];
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rab].eNB_addr.length = 4;
ue_context_pP->ue_context.e_rab[e_rab].status = E_RAB_STATUS_ESTABLISHED;
} else {
e_rabs_failed++;
ue_context_pP->ue_context.e_rab[e_rab].status = E_RAB_STATUS_FAILED;
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs_failed[e_rab].e_rab_id = ue_context_pP->ue_context.e_rab[e_rab].param.e_rab_id;
// TODO add cause when it will be integrated
}
}
MSC_LOG_TX_MESSAGE(
MSC_RRC_ENB,
MSC_S1AP_ENB,
(const char *)&S1AP_E_RAB_SETUP_RESP (msg_p),
sizeof(s1ap_e_rab_setup_resp_t),
MSC_AS_TIME_FMT" E_RAB_SETUP_RESP UE %X eNB_ue_s1ap_id %u e_rabs:%u succ %u fail",
MSC_AS_TIME_ARGS(ctxt_pP),
ue_context_pP->ue_id_rnti,
S1AP_E_RAB_SETUP_RESP (msg_p).eNB_ue_s1ap_id,
e_rabs_done, e_rabs_failed);
S1AP_E_RAB_SETUP_RESP (msg_p).nb_of_e_rabs = e_rabs_done;
S1AP_E_RAB_SETUP_RESP (msg_p).nb_of_e_rabs_failed = e_rabs_failed;
itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p);
}
# endif /* defined(ENABLE_ITTI) */
#endif /* defined(ENABLE_USE_MME) */
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