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d9d6ce374f15d474768db8147336c4541bfa14d5
openairinterface5g/openair2/RRC/LTE/rrc_eNB_S1AP.c
T
Robert Schmidt d9d6ce374f Perform S1 UE Context Release Complete after corresponding F1 message 
This commits isolates the S1 UE Ctxt Rel Complete and GTP Tunnel Delete
Requests in functions and calls these function in the original place
(rrc_rx_tx()). The same functions are then used in the F1 UE Ctxt Rel
Complete handler to perform the same functionality, i.e. forward the UE
Ctxt Rel Complete message to the MME and free outstanding resources (RRC
context, GTP tunnels, S1 context).
2019-01-25 16:37:57 +01:00

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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 rrc_eNB_S1AP.c
* \brief rrc S1AP procedures for eNB
* \author Navid Nikaein, Laurent Winckel, Sebastien ROUX, and Lionel GAUTHIER
* \date 2013-2016
* \version 1.0
* \company Eurecom
* \email: navid.nikaein@eurecom.fr
*/
#if defined(ENABLE_USE_MME)
# include "rrc_defs.h"
# include "rrc_extern.h"
# include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
# include "RRC/LTE/MESSAGES/asn1_msg.h"
# include "rrc_eNB_UE_context.h"
# include "rrc_eNB_S1AP.h"
# include "enb_config.h"
# include "common/ran_context.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"
#include "UERadioAccessCapabilityInformation.h"
#include "gtpv1u_eNB_task.h"
#include "RRC/LTE/rrc_eNB_GTPV1U.h"
#include "TLVDecoder.h"
#include "S1AP_NAS-PDU.h"
#include "flexran_agent_common_internal.h"
extern RAN_CONTEXT_t RC;
/* 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;
#if (RRC_VERSION >= MAKE_VERSION(9, 2, 0))
# 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
void extract_imsi(uint8_t *pdu_buf, uint32_t pdu_len, rrc_eNB_ue_context_t *ue_context_pP)
{
/* Process NAS message locally to get the IMSI */
nas_message_t nas_msg;
memset(&nas_msg, 0, sizeof(nas_message_t));
int size = 0;
nas_message_security_header_t *header = &nas_msg.header;
/* Decode the first octet of the header (security header type or EPS
* bearer identity, and protocol discriminator) */
DECODE_U8((char *) pdu_buf, *(uint8_t*) (header), size);
/* Decode NAS message only if decodable*/
if (!(header->security_header_type <= SECURITY_HEADER_TYPE_INTEGRITY_PROTECTED
&& header->protocol_discriminator == EPS_MOBILITY_MANAGEMENT_MESSAGE
&& pdu_len > NAS_MESSAGE_SECURITY_HEADER_SIZE))
return;
if (header->security_header_type != SECURITY_HEADER_TYPE_NOT_PROTECTED) {
/* Decode the message authentication code */
DECODE_U32((char *) pdu_buf+size, header->message_authentication_code, size);
/* Decode the sequence number */
DECODE_U8((char *) pdu_buf+size, header->sequence_number, size);
}
/* Note: the value of the pointer (i.e. the address) is given by value, so we
* can modify it as we want. The callee retains the original address! */
pdu_buf += size;
pdu_len -= size;
/* Decode plain NAS message */
EMM_msg *e_msg = &nas_msg.plain.emm;
emm_msg_header_t *emm_header = &e_msg->header;
/* First decode the EMM message header */
int e_head_size = 0;
/* Check that buffer contains more than only the header */
if (pdu_len <= sizeof(emm_msg_header_t))
return;
/* Decode the security header type and the protocol discriminator */
DECODE_U8(pdu_buf + e_head_size, *(uint8_t *)(emm_header), e_head_size);
/* Decode the message type */
DECODE_U8(pdu_buf + e_head_size, emm_header->message_type, e_head_size);
/* Check that this is the right message */
if (emm_header->protocol_discriminator != EPS_MOBILITY_MANAGEMENT_MESSAGE)
return;
pdu_buf += e_head_size;
pdu_len -= e_head_size;
if (emm_header->message_type == IDENTITY_RESPONSE) {
decode_identity_response(&e_msg->identity_response, pdu_buf, pdu_len);
if (e_msg->identity_response.mobileidentity.imsi.typeofidentity == MOBILE_IDENTITY_IMSI) {
memcpy(&ue_context_pP->ue_context.imsi,
&e_msg->identity_response.mobileidentity.imsi,
sizeof(ImsiMobileIdentity_t));
}
} else if (emm_header->message_type == ATTACH_REQUEST) {
decode_attach_request(&e_msg->attach_request, pdu_buf, pdu_len);
if (e_msg->attach_request.oldgutiorimsi.imsi.typeofidentity == MOBILE_IDENTITY_IMSI) {
/* the following is very dirty, we cast (implicitly) from
* ImsiEpsMobileIdentity_t to ImsiMobileIdentity_t*/
memcpy(&ue_context_pP->ue_context.imsi,
&e_msg->attach_request.oldgutiorimsi.imsi,
sizeof(ImsiMobileIdentity_t));
}
}
}
# 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 %ld] Error while hashtable_insert in s1ap_id2_s1ap_ids eNB_ue_s1ap_id %"PRIu32"\n",
rrc_instance_pP - RC.rrc[0], 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(
RC.rrc[ENB_INSTANCE_TO_MODULE_ID(instanceP)],
ue_initial_idP,
eNB_ue_s1ap_idP);
if (temp) {
return rrc_eNB_get_ue_context(
RC.rrc[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 CipheringAlgorithm_r12_t rrc_eNB_select_ciphering(uint16_t algorithms)
{
//#warning "Forced return SecurityAlgorithmConfig__cipheringAlgorithm_eea0, to be deleted in future"
return CipheringAlgorithm_r12_eea0;
if (algorithms & S1AP_ENCRYPTION_EEA2_MASK) {
return CipheringAlgorithm_r12_eea2;
}
if (algorithms & S1AP_ENCRYPTION_EEA1_MASK) {
return CipheringAlgorithm_r12_eea1;
}
return CipheringAlgorithm_r12_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;
CipheringAlgorithm_r12_t 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 %lu NAS security_capabilities.integrity_algorithms %u AS integrity_algorithm %u\n",
ctxt_pP->module_id,
ue_context_pP->ue_context.security_capabilities.encryption_algorithms,
(unsigned long)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 (%p): %lx, %x, %s\n",
ctxt_pP->module_id,
ue_context_pP->ue_context.rnti,
security_capabilities_pP,
(unsigned long)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);
memset (ue_context_pP->ue_context.nh, 0, SECURITY_KEY_LENGTH);
ue_context_pP->ue_context.nh_ncc = -1;
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
}
//------------------------------------------------------------------------------
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);
#if !defined(USRP_REC_PLAY)
SET_LOG_DUMP(DEBUG_SECURITY) ;
#endif
if ( LOG_DUMPFLAG( DEBUG_SECURITY ) ) {
if (print_keys ==1 ) {
print_keys =0;
LOG_DUMPMSG(RRC, DEBUG_SECURITY, ue_context_pP->ue_context.kenb, 32,"\nKeNB:" );
LOG_DUMPMSG(RRC, DEBUG_SECURITY, kRRCenc, 32,"\nKRRCenc:" );
LOG_DUMPMSG(RRC, DEBUG_SECURITY, kRRCint, 32,"\nKRRCint:" );
}
}
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;
extract_imsi(S1AP_UPLINK_NAS (msg_p).nas_pdu.buffer,
S1AP_UPLINK_NAS (msg_p).nas_pdu.length,
ue_context_pP);
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) {
extract_imsi(ulInformationTransferR8->dedicatedInfoType.choice.dedicatedInfoNAS.buf,
ulInformationTransferR8->dedicatedInfoType.choice.dedicatedInfoNAS.size,
ue_context_pP);
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;
/* 4096 is arbitrary, should be big enough */
unsigned char buf[4096];
unsigned char *buf2;
UERadioAccessCapabilityInformation_t rac;
if (ueCapabilityInformation->criticalExtensions.present != UECapabilityInformation__criticalExtensions_PR_c1
|| ueCapabilityInformation->criticalExtensions.choice.c1.present != UECapabilityInformation__criticalExtensions__c1_PR_ueCapabilityInformation_r8) {
LOG_E(RRC, "[eNB %d][UE %x] bad UE capabilities\n", ctxt_pP->module_id, ue_context_pP->ue_context.rnti);
return;
}
asn_enc_rval_t ret = uper_encode_to_buffer(&asn_DEF_UECapabilityInformation, NULL, ueCapabilityInformation, buf, 4096);
if (ret.encoded == -1) abort();
memset(&rac, 0, sizeof(UERadioAccessCapabilityInformation_t));
rac.criticalExtensions.present = UERadioAccessCapabilityInformation__criticalExtensions_PR_c1;
rac.criticalExtensions.choice.c1.present = UERadioAccessCapabilityInformation__criticalExtensions__c1_PR_ueRadioAccessCapabilityInformation_r8;
rac.criticalExtensions.choice.c1.choice.ueRadioAccessCapabilityInformation_r8.ue_RadioAccessCapabilityInfo.buf = buf;
rac.criticalExtensions.choice.c1.choice.ueRadioAccessCapabilityInformation_r8.ue_RadioAccessCapabilityInfo.size = (ret.encoded+7)/8;
rac.criticalExtensions.choice.c1.choice.ueRadioAccessCapabilityInformation_r8.nonCriticalExtension = NULL;
/* 8192 is arbitrary, should be big enough */
buf2 = malloc16(8192);
if (buf2 == NULL) abort();
ret = uper_encode_to_buffer(&asn_DEF_UERadioAccessCapabilityInformation, NULL, &rac, buf2, 8192);
if (ret.encoded == -1) abort();
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 = (ret.encoded+7)/8;
S1AP_UE_CAPABILITIES_IND (msg_p).ue_radio_cap.buffer = buf2;
itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p);
}
//------------------------------------------------------------------------------
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
)
//------------------------------------------------------------------------------
{
eNB_RRC_INST *rrc=RC.rrc[ctxt_pP->module_id];
#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(RC.rrc[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;
extract_imsi(S1AP_NAS_FIRST_REQ (message_p).nas_pdu.buffer,
S1AP_NAS_FIRST_REQ (message_p).nas_pdu.length,
ue_context_pP);
/* 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);
}
/* selected_plmn_identity: IE is 1-based, convert to 0-based (C array) */
int selected_plmn_identity = rrcConnectionSetupComplete->selectedPLMN_Identity - 1;
S1AP_NAS_FIRST_REQ(message_p).selected_plmn_identity = selected_plmn_identity;
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[selected_plmn_identity];
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[selected_plmn_identity];
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);
}
} else {
S1AP_NAS_FIRST_REQ(message_p).ue_identity.gummei.mcc = rrc->configuration.mcc[selected_plmn_identity];
S1AP_NAS_FIRST_REQ(message_p).ue_identity.gummei.mnc = rrc->configuration.mnc[selected_plmn_identity];
S1AP_NAS_FIRST_REQ(message_p).ue_identity.gummei.mnc_len = rrc->configuration.mnc_digit_length[selected_plmn_identity];
}
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;
uint8_t srb_id;
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);
srb_id = ue_context_p->ue_context.Srb2.Srb_info.Srb_id;
/* 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);
LOG_DUMPMSG(RRC,DEBUG_RRC,buffer,length,"[MSG] RRC DL Information Transfer\n");
/*
* switch UL or DL NAS message without RRC piggybacked to SRB2 if active.
*/
/* Transfer data to PDCP */
rrc_data_req (
&ctxt,
srb_id,
*rrc_eNB_mui++,
SDU_CONFIRM_NO,
length,
buffer,
PDCP_TRANSMISSION_MODE_CONTROL);
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;
uint8_t inde_list[NB_RB_MAX - 3]={0};
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;
LOG_E(RRC, "rrc_eNB_process_S1AP_INITIAL_CONTEXT_SETUP_REQ: ue_context_p->ue_context.nb_of_e_rabs = %d \n", ue_context_p->ue_context.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));
inde_list[create_tunnel_req.num_tunnels]= i;
create_tunnel_req.num_tunnels++;
}
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,
&inde_list[0]);
ue_context_p->ue_context.setup_e_rabs=ue_context_p->ue_context.nb_of_e_rabs;
}
/* 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);
}
}
// in case, send the S1SP initial context response if it is not sent with the attach complete message
if (ue_context_p->ue_context.Status == RRC_RECONFIGURED) {
LOG_I(RRC, "Sending rrc_eNB_send_S1AP_INITIAL_CONTEXT_SETUP_RESP, cause %ld\n", ue_context_p->ue_context.reestablishment_cause);
//if(ue_context_p->ue_context.reestablishment_cause == ReestablishmentCause_spare1){}
rrc_eNB_send_S1AP_INITIAL_CONTEXT_SETUP_RESP(&ctxt,ue_context_p);
}
/*
if ((RC.rrc[ctxt.module_id]->node_type == ngran_eNB_CU) ||
(RC.rrc[ctxt.module_id]->node_type == ngran_ng_eNB_CU) ||
(RC.rrc[ctxt.module_id]->node_type == ngran_gNB_CU) ){
message_p = itti_alloc_new_message (TASK_RRC_ENB, F1AP_UE_CONTEXT_SETUP_REQ);
F1AP_UE_CONTEXT_SETUP_REQ (message_p).rrc_container = ue_p->Srb0.Tx_buffer.Payload;
F1AP_UE_CONTEXT_SETUP_REQ (message_p).rrc_container_length = ue_p->Srb0.Tx_buffer.payload_size;
F1AP_UE_CONTEXT_SETUP_REQ (message_p).gNB_CU_ue_id = 0;
F1AP_UE_CONTEXT_SETUP_REQ (message_p).gNB_DU_ue_id = 0;
F1AP_UE_CONTEXT_SETUP_REQ (message_p).old_gNB_DU_ue_id = 0xFFFFFFFF; // unknown
F1AP_UE_CONTEXT_SETUP_REQ (message_p).rnti = ue_p->rnti;
F1AP_UE_CONTEXT_SETUP_REQ (message_p).srb_id = CCCH;
F1AP_UE_CONTEXT_SETUP_REQ (message_p).execute_duplication = 1;
F1AP_UE_CONTEXT_SETUP_REQ (message_p).RAT_frequency_priority_information.en_dc = 0;
itti_send_msg_to_task (TASK_CU_F1, ctxt_pP->module_id, message_p);
LOG_D(RRC, "Send F1AP_UE_CONTEXT_SETUP_REQ with ITTI\n");
}
*/
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)\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);
}
}
void rrc_eNB_send_S1AP_UE_CONTEXT_RELEASE_CPLT(
module_id_t enb_mod_idP,
uint32_t 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);
MessageDef *msg = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_COMPLETE);
S1AP_UE_CONTEXT_RELEASE_COMPLETE(msg).eNB_ue_s1ap_id = eNB_ue_s1ap_id;
itti_send_msg_to_task(TASK_S1AP, ENB_MODULE_ID_TO_INSTANCE(enb_mod_idP), msg);
}
/*------------------------------------------------------------------------------*/
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(
RC.rrc[instance],
UE_INITIAL_ID_INVALID,
eNB_ue_s1ap_id);
if (NULL != rrc_ue_s1ap_ids) {
rrc_eNB_S1AP_remove_ue_ids(
RC.rrc[instance],
rrc_ue_s1ap_ids);
}
return (-1);
} else {
ue_context_p->ue_context.ue_release_timer_s1 = 0;
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);
*/
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;
gtpv1u_enb_create_tunnel_req_t create_tunnel_req;
gtpv1u_enb_create_tunnel_resp_t create_tunnel_resp;
uint8_t inde_list[NB_RB_MAX - 3]={0};
struct rrc_eNB_ue_context_s* ue_context_p = NULL;
protocol_ctxt_t ctxt;
uint8_t e_rab_done;
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;
e_rab_done = 0;
// keep the previous bearer
// the index for the rec
for (i = 0;
// i < nb_e_rabs_tosetup;
i < NB_RB_MAX - 3; // loop all e-rabs in e_rab[]
i++) {
//if (ue_context_p->ue_context.e_rab[i+ue_context_p->ue_context.setup_e_rabs].status == E_RAB_STATUS_DONE)
// LOG_W(RRC,"E-RAB already configured, reconfiguring\n");
// check e-rab status, if e rab status is greater than E_RAB_STATUS_DONE, don't not config this one
if(ue_context_p->ue_context.e_rab[i].status >= E_RAB_STATUS_DONE)
continue;
//ue_context_p->ue_context.e_rab[i+ue_context_p->ue_context.setup_e_rabs].status = E_RAB_STATUS_NEW;
//ue_context_p->ue_context.e_rab[i+ue_context_p->ue_context.setup_e_rabs].param = S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[i];
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[e_rab_done];
create_tunnel_req.eps_bearer_id[e_rab_done] = S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[e_rab_done].e_rab_id;
create_tunnel_req.sgw_S1u_teid[e_rab_done] = S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[e_rab_done].gtp_teid;
memcpy(&create_tunnel_req.sgw_addr[e_rab_done],
& S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[e_rab_done].sgw_addr,
sizeof(transport_layer_addr_t));
LOG_I(RRC,"E_RAB setup REQ: local index %d teid %u, eps id %d \n",
i,
create_tunnel_req.sgw_S1u_teid[e_rab_done],
create_tunnel_req.eps_bearer_id[i] );
inde_list[e_rab_done] = i;
e_rab_done++;
if(e_rab_done >= nb_e_rabs_tosetup){
break;
}
}
ue_context_p->ue_context.nb_of_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 = e_rab_done;
// 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,
&inde_list[0]);
ue_context_p->ue_context.setup_e_rabs+=nb_e_rabs_tosetup;
}
/* 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);
}
}
/*NN: careful about the typcast of xid (long -> uint8_t*/
int rrc_eNB_send_S1AP_E_RAB_SETUP_RESP(const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP,
uint8_t xid ){
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 = 0; e_rab < ue_context_pP->ue_context.setup_e_rabs ; e_rab++) {
/* only respond to the corresponding transaction */
//if (((xid+1)%4) == ue_context_pP->ue_context.e_rab[e_rab].xid) {
if (xid == ue_context_pP->ue_context.e_rab[e_rab].xid) {
if (ue_context_pP->ue_context.e_rab[e_rab].status == E_RAB_STATUS_DONE) {
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].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_rabs_done].gtp_teid = ue_context_pP->ue_context.enb_gtp_teid[e_rab];
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].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;
LOG_I (RRC,"enb_gtp_addr (msg index %d, e_rab index %d, status %d, xid %d): nb_of_e_rabs %d, e_rab_id %d, teid: %u, addr: %d.%d.%d.%d \n ",
e_rabs_done, e_rab, ue_context_pP->ue_context.e_rab[e_rab].status, xid,
ue_context_pP->ue_context.nb_of_e_rabs,
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].e_rab_id,
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].gtp_teid,
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].eNB_addr.buffer[0],
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].eNB_addr.buffer[1],
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].eNB_addr.buffer[2],
S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].eNB_addr.buffer[3]);
e_rabs_done++;
} else if ((ue_context_pP->ue_context.e_rab[e_rab].status == E_RAB_STATUS_NEW) ||
(ue_context_pP->ue_context.e_rab[e_rab].status == E_RAB_STATUS_ESTABLISHED)){
LOG_D (RRC,"E-RAB is NEW or already ESTABLISHED\n");
}else { /* to be improved */
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_rabs_failed].e_rab_id = ue_context_pP->ue_context.e_rab[e_rab].param.e_rab_id;
e_rabs_failed++;
// TODO add cause when it will be integrated
}
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;
// NN: add conditions for e_rabs_failed
} else {
/*debug info for the xid */
LOG_D(RRC,"xid does not corresponds (context e_rab index %d, status %d, xid %d/%d) \n ",
e_rab, ue_context_pP->ue_context.e_rab[e_rab].status, xid, ue_context_pP->ue_context.e_rab[e_rab].xid);
}
}
if ((e_rabs_done > 0) ){
LOG_I(RRC,"S1AP_E_RAB_SETUP_RESP: sending the message: nb_of_erabs %d, total e_rabs %d, index %d\n",
ue_context_pP->ue_context.nb_of_e_rabs, ue_context_pP->ue_context.setup_e_rabs, e_rab);
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);
itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p);
}
for(int i = 0; i < NB_RB_MAX; i++) {
ue_context_pP->ue_context.e_rab[i].xid = -1;
}
return 0;
}
int rrc_eNB_process_S1AP_E_RAB_MODIFY_REQ(MessageDef *msg_p, const char *msg_name, instance_t instance)
{
int i;
uint16_t ue_initial_id;
uint32_t eNB_ue_s1ap_id;
struct rrc_eNB_ue_context_s* ue_context_p = NULL;
protocol_ctxt_t ctxt;
ue_initial_id = S1AP_E_RAB_MODIFY_REQ (msg_p).ue_initial_id;
eNB_ue_s1ap_id = S1AP_E_RAB_MODIFY_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_D(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_MODIFY_REQ (msg_p).nb_e_rabs_tomodify);
if (ue_context_p == NULL) {
/* Can not associate this message to an UE index, send a failure to S1AP and discard it! */
LOG_W(RRC, "[eNB %d] In S1AP_E_RAB_MODIFY_REQ: unknown UE from S1AP ids (%d, %d)\n", instance, ue_initial_id, eNB_ue_s1ap_id);
int nb_of_e_rabs_failed = 0;
MessageDef *msg_fail_p = NULL;
msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_E_RAB_MODIFY_RESP);
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).eNB_ue_s1ap_id = S1AP_E_RAB_MODIFY_REQ (msg_p).eNB_ue_s1ap_id;
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).nb_of_e_rabs = 0;
for (nb_of_e_rabs_failed = 0; nb_of_e_rabs_failed < S1AP_E_RAB_MODIFY_REQ (msg_p).nb_e_rabs_tomodify; nb_of_e_rabs_failed++) {
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).e_rabs_failed[nb_of_e_rabs_failed].e_rab_id =
S1AP_E_RAB_MODIFY_REQ (msg_p).e_rab_modify_params[nb_of_e_rabs_failed].e_rab_id;
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).e_rabs_failed[nb_of_e_rabs_failed].cause = S1AP_CAUSE_RADIO_NETWORK;
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).e_rabs_failed[nb_of_e_rabs_failed].cause_value = 31;//S1ap_CauseRadioNetwork_multiple_E_RAB_ID_instances;
}
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).nb_of_e_rabs_failed = nb_of_e_rabs_failed;
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 = eNB_ue_s1ap_id;
/* Save e RAB information for later */
{
int j;
boolean_t is_treated[S1AP_MAX_E_RAB] = {FALSE};
uint8_t nb_of_failed_e_rabs = 0;
// keep the previous bearer
// the index for the rec
for (i = 0; i < S1AP_E_RAB_MODIFY_REQ (msg_p).nb_e_rabs_tomodify; i++) {
if (is_treated[i] == TRUE) {
// already treated
continue;
}
for (j = i+1; j < S1AP_E_RAB_MODIFY_REQ (msg_p).nb_e_rabs_tomodify; j++) {
if (is_treated[j] == FALSE &&
S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[j].e_rab_id == S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[i].e_rab_id) {
// handle multiple E-RAB ID
ue_context_p->ue_context.modify_e_rab[j].status = E_RAB_STATUS_NEW;
ue_context_p->ue_context.modify_e_rab[j].param.e_rab_id = S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[j].e_rab_id;
ue_context_p->ue_context.modify_e_rab[j].cause = S1AP_CAUSE_RADIO_NETWORK;
ue_context_p->ue_context.modify_e_rab[j].cause_value = 31;//S1ap_CauseRadioNetwork_multiple_E_RAB_ID_instances;
nb_of_failed_e_rabs++;
is_treated[i] = TRUE;
is_treated[j] = TRUE;
}
}
if (is_treated[i] == TRUE) {
// handle multiple E-RAB ID
ue_context_p->ue_context.modify_e_rab[i].status = E_RAB_STATUS_NEW;
ue_context_p->ue_context.modify_e_rab[i].param.e_rab_id = S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[i].e_rab_id;
ue_context_p->ue_context.modify_e_rab[i].cause = S1AP_CAUSE_RADIO_NETWORK;
ue_context_p->ue_context.modify_e_rab[i].cause_value = 31;//S1ap_CauseRadioNetwork_multiple_E_RAB_ID_instances;
nb_of_failed_e_rabs++;
continue;
}
if (S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[i].nas_pdu.length == 0) {
// nas_pdu.length == 0
ue_context_p->ue_context.modify_e_rab[i].status = E_RAB_STATUS_NEW;
ue_context_p->ue_context.modify_e_rab[i].param.e_rab_id = S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[i].e_rab_id;
ue_context_p->ue_context.modify_e_rab[i].cause = S1AP_CAUSE_NAS;
ue_context_p->ue_context.modify_e_rab[i].cause_value = 3;//S1ap_CauseNas_unspecified;
nb_of_failed_e_rabs++;
is_treated[i] = TRUE;
continue;
}
for (j = 0; j < NB_RB_MAX-3; j++) {
if (ue_context_p->ue_context.e_rab[j].param.e_rab_id == S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[i].e_rab_id) {
if(ue_context_p->ue_context.e_rab[j].status == E_RAB_STATUS_TORELEASE || ue_context_p->ue_context.e_rab[j].status == E_RAB_STATUS_DONE){
break;
}
ue_context_p->ue_context.modify_e_rab[i].status = E_RAB_STATUS_NEW;
ue_context_p->ue_context.modify_e_rab[i].cause = S1AP_CAUSE_NOTHING;
ue_context_p->ue_context.modify_e_rab[i].param.e_rab_id = S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[i].e_rab_id;
ue_context_p->ue_context.modify_e_rab[i].param.qos = S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[i].qos;
ue_context_p->ue_context.modify_e_rab[i].param.nas_pdu.length = S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[i].nas_pdu.length;
ue_context_p->ue_context.modify_e_rab[i].param.nas_pdu.buffer = S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[i].nas_pdu.buffer;
ue_context_p->ue_context.modify_e_rab[i].param.sgw_addr = ue_context_p->ue_context.e_rab[j].param.sgw_addr;
ue_context_p->ue_context.modify_e_rab[i].param.gtp_teid = ue_context_p->ue_context.e_rab[j].param.gtp_teid;
is_treated[i] = TRUE;
break;
}
}
if (is_treated[i] == FALSE) {
// handle Unknown E-RAB ID
ue_context_p->ue_context.modify_e_rab[i].status = E_RAB_STATUS_NEW;
ue_context_p->ue_context.modify_e_rab[i].param.e_rab_id = S1AP_E_RAB_MODIFY_REQ(msg_p).e_rab_modify_params[i].e_rab_id;
ue_context_p->ue_context.modify_e_rab[i].cause = S1AP_CAUSE_RADIO_NETWORK;
ue_context_p->ue_context.modify_e_rab[i].cause_value = 30;//S1ap_CauseRadioNetwork_unknown_E_RAB_ID;
nb_of_failed_e_rabs++;
is_treated[i] = TRUE;
}
}
ue_context_p->ue_context.nb_of_modify_e_rabs = S1AP_E_RAB_MODIFY_REQ (msg_p).nb_e_rabs_tomodify;
ue_context_p->ue_context.nb_of_failed_e_rabs = nb_of_failed_e_rabs;
}
/* TODO parameters yet to process ... */
{
// S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).ue_ambr;
}
if (ue_context_p->ue_context.nb_of_failed_e_rabs < ue_context_p->ue_context.nb_of_modify_e_rabs) {
if (0 == rrc_eNB_modify_dedicatedRRCConnectionReconfiguration(&ctxt, ue_context_p, 0)) {
return (0);
}
}
{
int nb_of_e_rabs_failed = 0;
MessageDef *msg_fail_p = NULL;
msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_E_RAB_MODIFY_RESP);
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).eNB_ue_s1ap_id = S1AP_E_RAB_MODIFY_REQ (msg_p).eNB_ue_s1ap_id;
// S1AP_E_RAB_MODIFY_RESP (msg_fail_p).e_rabs[S1AP_MAX_E_RAB];
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).nb_of_e_rabs = 0;
for(nb_of_e_rabs_failed = 0; nb_of_e_rabs_failed < ue_context_p->ue_context.nb_of_failed_e_rabs; nb_of_e_rabs_failed++) {
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).e_rabs_failed[nb_of_e_rabs_failed].e_rab_id =
ue_context_p->ue_context.modify_e_rab[nb_of_e_rabs_failed].param.e_rab_id;
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).e_rabs_failed[nb_of_e_rabs_failed].cause = ue_context_p->ue_context.modify_e_rab[nb_of_e_rabs_failed].cause;
}
S1AP_E_RAB_MODIFY_RESP (msg_fail_p).nb_of_e_rabs_failed = nb_of_e_rabs_failed;
itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p);
ue_context_p->ue_context.nb_of_modify_e_rabs = 0;
ue_context_p->ue_context.nb_of_failed_e_rabs = 0;
memset(ue_context_p->ue_context.modify_e_rab, 0, sizeof(ue_context_p->ue_context.modify_e_rab));
return (0);
}
} // end of ue_context_p != NULL
}
/*NN: careful about the typcast of xid (long -> uint8_t*/
int rrc_eNB_send_S1AP_E_RAB_MODIFY_RESP(const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP,
uint8_t xid ) {
MessageDef *msg_p = NULL;
int i;
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_MODIFY_RESP);
S1AP_E_RAB_MODIFY_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_modify_e_rabs; e_rab++) {
/* only respond to the corresponding transaction */
if (xid == ue_context_pP->ue_context.modify_e_rab[e_rab].xid) {
if (ue_context_pP->ue_context.modify_e_rab[e_rab].status == E_RAB_STATUS_DONE) {
for (i = 0; i < ue_context_pP->ue_context.setup_e_rabs; i++) {
if (ue_context_pP->ue_context.modify_e_rab[e_rab].param.e_rab_id == ue_context_pP->ue_context.e_rab[i].param.e_rab_id) {
// Update ue_context_pP->ue_context.e_rab
ue_context_pP->ue_context.e_rab[i].status = E_RAB_STATUS_ESTABLISHED;
ue_context_pP->ue_context.e_rab[i].param.qos = ue_context_pP->ue_context.modify_e_rab[e_rab].param.qos;
ue_context_pP->ue_context.e_rab[i].cause = S1AP_CAUSE_NOTHING;
break;
}
}
if (i < ue_context_pP->ue_context.setup_e_rabs) {
S1AP_E_RAB_MODIFY_RESP (msg_p).e_rabs[e_rabs_done].e_rab_id = ue_context_pP->ue_context.modify_e_rab[e_rab].param.e_rab_id;
// TODO add other information from S1-U when it will be integrated
LOG_D (RRC,"enb_gtp_addr (msg index %d, e_rab index %d, status %d, xid %d): nb_of_modify_e_rabs %d, e_rab_id %d \n ",
e_rabs_done, e_rab, ue_context_pP->ue_context.modify_e_rab[e_rab].status, xid,
ue_context_pP->ue_context.nb_of_modify_e_rabs,
S1AP_E_RAB_MODIFY_RESP (msg_p).e_rabs[e_rabs_done].e_rab_id);
e_rabs_done++;
} else {
// unexpected
S1AP_E_RAB_MODIFY_RESP (msg_p).e_rabs_failed[e_rabs_failed].e_rab_id = ue_context_pP->ue_context.modify_e_rab[e_rab].param.e_rab_id;
S1AP_E_RAB_MODIFY_RESP (msg_p).e_rabs_failed[e_rabs_failed].cause = S1AP_CAUSE_RADIO_NETWORK;
S1AP_E_RAB_MODIFY_RESP (msg_p).e_rabs_failed[e_rabs_failed].cause_value = 30;//S1ap_CauseRadioNetwork_unknown_E_RAB_ID;
e_rabs_failed++;
}
} else if ((ue_context_pP->ue_context.modify_e_rab[e_rab].status == E_RAB_STATUS_NEW) ||
(ue_context_pP->ue_context.modify_e_rab[e_rab].status == E_RAB_STATUS_ESTABLISHED)){
LOG_D (RRC,"E-RAB is NEW or already ESTABLISHED\n");
} else { /* status == E_RAB_STATUS_FAILED; */
S1AP_E_RAB_MODIFY_RESP (msg_p).e_rabs_failed[e_rabs_failed].e_rab_id = ue_context_pP->ue_context.modify_e_rab[e_rab].param.e_rab_id;
// add failure cause when defined
S1AP_E_RAB_MODIFY_RESP (msg_p).e_rabs_failed[e_rabs_failed].cause = ue_context_pP->ue_context.modify_e_rab[e_rab].cause;
e_rabs_failed++;
}
} else {
/*debug info for the xid */
LOG_D(RRC,"xid does not corresponds (context e_rab index %d, status %d, xid %d/%d) \n ",
e_rab, ue_context_pP->ue_context.modify_e_rab[e_rab].status, xid, ue_context_pP->ue_context.modify_e_rab[e_rab].xid);
}
}
S1AP_E_RAB_MODIFY_RESP (msg_p).nb_of_e_rabs = e_rabs_done;
S1AP_E_RAB_MODIFY_RESP (msg_p).nb_of_e_rabs_failed = e_rabs_failed;
// NN: add conditions for e_rabs_failed
if (e_rabs_done > 0 || e_rabs_failed > 0) {
LOG_D(RRC,"S1AP_E_RAB_MODIFY_RESP: sending the message: nb_of_modify_e_rabs %d, total e_rabs %d, index %d\n",
ue_context_pP->ue_context.nb_of_modify_e_rabs, ue_context_pP->ue_context.setup_e_rabs, e_rab);
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_MODIFY_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_MODIFY_RESP (msg_p).eNB_ue_s1ap_id,
e_rabs_done, e_rabs_failed);
itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p);
}
return 0;
}
int rrc_eNB_process_S1AP_E_RAB_RELEASE_COMMAND(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;
e_rab_release_t e_rab_release_params[S1AP_MAX_E_RAB];
uint8_t nb_e_rabs_torelease;
int erab;
int i;
uint8_t b_existed,is_existed;
uint8_t xid;
uint8_t e_rab_release_drb;
MessageDef * msg_delete_tunnels_p = NULL;
e_rab_release_drb = 0;
memcpy(&e_rab_release_params[0], &(S1AP_E_RAB_RELEASE_COMMAND (msg_p).e_rab_release_params[0]), sizeof(e_rab_release_t)*S1AP_MAX_E_RAB);
eNB_ue_s1ap_id = S1AP_E_RAB_RELEASE_COMMAND (msg_p).eNB_ue_s1ap_id;
nb_e_rabs_torelease = S1AP_E_RAB_RELEASE_COMMAND (msg_p).nb_e_rabs_torelease;
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){
PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0);
xid = rrc_eNB_get_next_transaction_identifier(ctxt.module_id);
LOG_D(RRC,"S1AP-E-RAB Release Command: MME_UE_S1AP_ID %d ENB_UE_S1AP_ID %d release_e_rabs %d \n",
S1AP_E_RAB_RELEASE_COMMAND (msg_p).mme_ue_s1ap_id, eNB_ue_s1ap_id,nb_e_rabs_torelease);
for(erab = 0; erab < nb_e_rabs_torelease; erab++){
b_existed = 0;
is_existed = 0;
for ( i = erab-1; i>= 0; i--){
if (e_rab_release_params[erab].e_rab_id == e_rab_release_params[i].e_rab_id){
is_existed = 1;
break;
}
}
if(is_existed == 1){
//e_rab_id is existed
continue;
}
for ( i = 0; i < NB_RB_MAX; i++){
if (e_rab_release_params[erab].e_rab_id == ue_context_p->ue_context.e_rab[i].param.e_rab_id){
b_existed = 1;
break;
}
}
if(b_existed == 0) {
//no e_rab_id
ue_context_p->ue_context.e_rabs_release_failed[ue_context_p->ue_context.nb_release_of_e_rabs].e_rab_id = e_rab_release_params[erab].e_rab_id;
ue_context_p->ue_context.e_rabs_release_failed[ue_context_p->ue_context.nb_release_of_e_rabs].cause = S1AP_CAUSE_RADIO_NETWORK;
ue_context_p->ue_context.e_rabs_release_failed[ue_context_p->ue_context.nb_release_of_e_rabs].cause_value = 30;
ue_context_p->ue_context.nb_release_of_e_rabs++;
} else {
if(ue_context_p->ue_context.e_rab[i].status == E_RAB_STATUS_FAILED){
ue_context_p->ue_context.e_rab[i].xid = xid;
continue;
} else if(ue_context_p->ue_context.e_rab[i].status == E_RAB_STATUS_ESTABLISHED){
ue_context_p->ue_context.e_rab[i].status = E_RAB_STATUS_TORELEASE;
ue_context_p->ue_context.e_rab[i].xid = xid;
e_rab_release_drb++;
}else{
//e_rab_id status NG
ue_context_p->ue_context.e_rabs_release_failed[ue_context_p->ue_context.nb_release_of_e_rabs].e_rab_id = e_rab_release_params[erab].e_rab_id;
ue_context_p->ue_context.e_rabs_release_failed[ue_context_p->ue_context.nb_release_of_e_rabs].cause = S1AP_CAUSE_RADIO_NETWORK;
ue_context_p->ue_context.e_rabs_release_failed[ue_context_p->ue_context.nb_release_of_e_rabs].cause_value = 0;
ue_context_p->ue_context.nb_release_of_e_rabs++;
}
}
}
if(e_rab_release_drb > 0) {
//RRCConnectionReconfiguration To UE
rrc_eNB_generate_dedicatedRRCConnectionReconfiguration_release(&ctxt, ue_context_p, xid, S1AP_E_RAB_RELEASE_COMMAND (msg_p).nas_pdu.length, S1AP_E_RAB_RELEASE_COMMAND (msg_p).nas_pdu.buffer);
} else {
//gtp tunnel delete
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)));
GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p).rnti = ue_context_p->ue_context.rnti;
for(i = 0; i < NB_RB_MAX; i++){
if(xid == ue_context_p->ue_context.e_rab[i].xid){
GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p).eps_bearer_id[GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p).num_erab++] = ue_context_p->ue_context.enb_gtp_ebi[i];
ue_context_p->ue_context.enb_gtp_teid[i] = 0;
memset(&ue_context_p->ue_context.enb_gtp_addrs[i], 0, sizeof(ue_context_p->ue_context.enb_gtp_addrs[i]));
ue_context_p->ue_context.enb_gtp_ebi[i] = 0;
}
}
itti_send_msg_to_task(TASK_GTPV1_U, instance, msg_delete_tunnels_p);
//S1AP_E_RAB_RELEASE_RESPONSE
rrc_eNB_send_S1AP_E_RAB_RELEASE_RESPONSE(&ctxt, ue_context_p, xid);
}
} else {
LOG_E(RRC,"S1AP-E-RAB Release Command: MME_UE_S1AP_ID %d ENB_UE_S1AP_ID %d Error ue_context_p NULL \n",
S1AP_E_RAB_RELEASE_COMMAND (msg_p).mme_ue_s1ap_id, S1AP_E_RAB_RELEASE_COMMAND (msg_p).eNB_ue_s1ap_id);
return -1;
}
return 0;
}
int rrc_eNB_send_S1AP_E_RAB_RELEASE_RESPONSE(const protocol_ctxt_t* const ctxt_pP, rrc_eNB_ue_context_t* const ue_context_pP, uint8_t xid){
int e_rabs_released = 0;
MessageDef *msg_p;
msg_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_E_RAB_RELEASE_RESPONSE);
S1AP_E_RAB_RELEASE_RESPONSE (msg_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id;
for (int i = 0; i < NB_RB_MAX; i++){
if (xid == ue_context_pP->ue_context.e_rab[i].xid){
S1AP_E_RAB_RELEASE_RESPONSE (msg_p).e_rab_release[e_rabs_released].e_rab_id = ue_context_pP->ue_context.e_rab[i].param.e_rab_id;
e_rabs_released++;
//clear
memset(&ue_context_pP->ue_context.e_rab[i],0,sizeof(e_rab_param_t));
}
}
S1AP_E_RAB_RELEASE_RESPONSE (msg_p).nb_of_e_rabs_released = e_rabs_released;
S1AP_E_RAB_RELEASE_RESPONSE (msg_p).nb_of_e_rabs_failed = ue_context_pP->ue_context.nb_release_of_e_rabs;
memcpy(&(S1AP_E_RAB_RELEASE_RESPONSE (msg_p).e_rabs_failed[0]),&ue_context_pP->ue_context.e_rabs_release_failed[0],sizeof(e_rab_failed_t)*ue_context_pP->ue_context.nb_release_of_e_rabs);
ue_context_pP->ue_context.setup_e_rabs -= e_rabs_released;
LOG_I(RRC,"S1AP-E-RAB RELEASE RESPONSE: ENB_UE_S1AP_ID %d release_e_rabs %d setup_e_rabs %d \n",
S1AP_E_RAB_RELEASE_RESPONSE (msg_p).eNB_ue_s1ap_id,
e_rabs_released, ue_context_pP->ue_context.setup_e_rabs);
itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p);
//clear xid
for(int i = 0; i < NB_RB_MAX; i++) {
ue_context_pP->ue_context.e_rab[i].xid = -1;
}
//clear release e_rabs
ue_context_pP->ue_context.nb_release_of_e_rabs = 0;
memset(&ue_context_pP->ue_context.e_rabs_release_failed[0],0,sizeof(e_rab_failed_t)*S1AP_MAX_E_RAB);
return 0;
}
/*------------------------------------------------------------------------------*/
int rrc_eNB_process_PAGING_IND(MessageDef *msg_p, const char *msg_name, instance_t instance)
{
const unsigned int Ttab[4] = {32,64,128,256};
uint8_t Tc,Tue; /* DRX cycle of UE */
uint32_t pcch_nB; /* 4T, 2T, T, T/2, T/4, T/8, T/16, T/32 */
uint32_t N; /* N: min(T,nB). total count of PF in one DRX cycle */
uint32_t Ns = 0; /* Ns: max(1,nB/T) */
uint8_t i_s; /* i_s = floor(UE_ID/N) mod Ns */
uint32_t T; /* DRX cycle */
for (uint16_t tai_size = 0; tai_size < S1AP_PAGING_IND(msg_p).tai_size; tai_size++) {
LOG_D(RRC,"[eNB %d] In S1AP_PAGING_IND: MCC %d, MNC %d, TAC %d\n", instance, S1AP_PAGING_IND(msg_p).plmn_identity[tai_size].mcc,
S1AP_PAGING_IND(msg_p).plmn_identity[tai_size].mnc, S1AP_PAGING_IND(msg_p).tac[tai_size]);
for (uint8_t j = 0; j < RC.rrc[instance]->configuration.num_plmn; j++) {
if (RC.rrc[instance]->configuration.mcc[j] == S1AP_PAGING_IND(msg_p).plmn_identity[tai_size].mcc
&& RC.rrc[instance]->configuration.mnc[j] == S1AP_PAGING_IND(msg_p).plmn_identity[tai_size].mnc
&& RC.rrc[instance]->configuration.tac == S1AP_PAGING_IND(msg_p).tac[tai_size]) {
for (uint8_t CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
lte_frame_type_t frame_type = RC.eNB[instance][CC_id]->frame_parms.frame_type;
/* get nB from configuration */
/* get default DRX cycle from configuration */
Tc = (uint8_t)RC.rrc[instance]->configuration.pcch_defaultPagingCycle[CC_id];
if (Tc < PCCH_Config__defaultPagingCycle_rf32 || Tc > PCCH_Config__defaultPagingCycle_rf256) {
continue;
}
Tue = (uint8_t)S1AP_PAGING_IND(msg_p).paging_drx;
/* set T = min(Tc,Tue) */
T = Tc < Tue ? Ttab[Tc] : Ttab[Tue];
/* set pcch_nB = PCCH-Config->nB */
pcch_nB = (uint32_t)RC.rrc[instance]->configuration.pcch_nB[CC_id];
switch (pcch_nB) {
case PCCH_Config__nB_fourT:
Ns = 4;
break;
case PCCH_Config__nB_twoT:
Ns = 2;
break;
default:
Ns = 1;
break;
}
/* set N = min(T,nB) */
if (pcch_nB > PCCH_Config__nB_oneT) {
switch (pcch_nB) {
case PCCH_Config__nB_halfT:
N = T/2;
break;
case PCCH_Config__nB_quarterT:
N = T/4;
break;
case PCCH_Config__nB_oneEighthT:
N = T/8;
break;
case PCCH_Config__nB_oneSixteenthT:
N = T/16;
break;
case PCCH_Config__nB_oneThirtySecondT:
N = T/32;
break;
default:
/* pcch_nB error */
LOG_E(RRC, "[eNB %d] In S1AP_PAGING_IND: pcch_nB error (pcch_nB %d) \n",
instance, pcch_nB);
return (-1);
}
} else {
N = T;
}
/* insert data to UE_PF_PO or update data in UE_PF_PO */
pthread_mutex_lock(&ue_pf_po_mutex);
uint8_t i = 0;
for (i = 0; i < MAX_MOBILES_PER_ENB; i++) {
if ((UE_PF_PO[CC_id][i].enable_flag == TRUE && UE_PF_PO[CC_id][i].ue_index_value == (uint16_t)(S1AP_PAGING_IND(msg_p).ue_index_value))
|| (UE_PF_PO[CC_id][i].enable_flag != TRUE)) {
/* set T = min(Tc,Tue) */
UE_PF_PO[CC_id][i].T = T;
/* set UE_ID */
UE_PF_PO[CC_id][i].ue_index_value = (uint16_t)S1AP_PAGING_IND(msg_p).ue_index_value;
/* calculate PF and PO */
/* set PF_min : SFN mod T = (T div N)*(UE_ID mod N) */
UE_PF_PO[CC_id][i].PF_min = (T / N) * (UE_PF_PO[CC_id][i].ue_index_value % N);
/* set PO */
/* i_s = floor(UE_ID/N) mod Ns */
i_s = (uint8_t)((UE_PF_PO[CC_id][i].ue_index_value / N) % Ns);
if (Ns == 1) {
UE_PF_PO[CC_id][i].PO = (frame_type==FDD) ? 9 : 0;
} else if (Ns==2) {
UE_PF_PO[CC_id][i].PO = (frame_type==FDD) ? (4+(5*i_s)) : (5*i_s);
} else if (Ns==4) {
UE_PF_PO[CC_id][i].PO = (frame_type==FDD) ? (4*(i_s&1)+(5*(i_s>>1))) : ((i_s&1)+(5*(i_s>>1)));
}
if (UE_PF_PO[CC_id][i].enable_flag == TRUE) {
//paging exist UE log
LOG_D(RRC,"[eNB %d] CC_id %d In S1AP_PAGING_IND: Update exist UE %d, T %d, PF %d, PO %d\n", instance, CC_id, UE_PF_PO[CC_id][i].ue_index_value, T, UE_PF_PO[CC_id][i].PF_min, UE_PF_PO[CC_id][i].PO);
} else {
/* set enable_flag */
UE_PF_PO[CC_id][i].enable_flag = TRUE;
//paging new UE log
LOG_D(RRC,"[eNB %d] CC_id %d In S1AP_PAGING_IND: Insert a new UE %d, T %d, PF %d, PO %d\n", instance, CC_id, UE_PF_PO[CC_id][i].ue_index_value, T, UE_PF_PO[CC_id][i].PF_min, UE_PF_PO[CC_id][i].PO);
}
break;
}
}
pthread_mutex_unlock(&ue_pf_po_mutex);
uint32_t length;
uint8_t buffer[RRC_BUF_SIZE];
uint8_t *message_buffer;
/* Transfer data to PDCP */
MessageDef *message_p;
message_p = itti_alloc_new_message (TASK_RRC_ENB, RRC_PCCH_DATA_REQ);
/* Create message for PDCP (DLInformationTransfer_t) */
length = do_Paging (instance,
buffer,
S1AP_PAGING_IND(msg_p).ue_paging_identity,
S1AP_PAGING_IND(msg_p).cn_domain);
if(length == -1)
{
LOG_I(RRC, "do_Paging error");
return -1;
}
message_buffer = itti_malloc (TASK_RRC_ENB, TASK_PDCP_ENB, length);
/* Uses a new buffer to avoid issue with PDCP buffer content that could be changed by PDCP (asynchronous message handling). */
memcpy (message_buffer, buffer, length);
RRC_PCCH_DATA_REQ (message_p).sdu_size = length;
RRC_PCCH_DATA_REQ (message_p).sdu_p = message_buffer;
RRC_PCCH_DATA_REQ (message_p).mode = PDCP_TRANSMISSION_MODE_TRANSPARENT; /* not used */
RRC_PCCH_DATA_REQ (message_p).rnti = P_RNTI;
RRC_PCCH_DATA_REQ (message_p).ue_index = i;
RRC_PCCH_DATA_REQ (message_p).CC_id = CC_id;
LOG_D(RRC, "[eNB %d] CC_id %d In S1AP_PAGING_IND: send encdoed buffer to PDCP buffer_size %d\n", instance, CC_id, length);
itti_send_msg_to_task (TASK_PDCP_ENB, instance, message_p);
}
}
}
}
return (0);
}
# endif /* defined(ENABLE_ITTI) */
#endif /* defined(ENABLE_USE_MME) */
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