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64a506863183010c29df8cd8a3f1ad28280efe49
openairinterface5g/openair2/RRC/LITE/rrc_eNB_S1AP.c
T
thomasl 64a5068631 fix compilation warnings 
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@6240 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2014-12-10 18:14:41 +00:00

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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@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 Navid Nikaein
* \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_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
/* 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)
/*! \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(uint8_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_initial_id (uint8_t mod_id, uint16_t ue_initial_id)
*\brief retrieve UE index in the eNB from the UE initial ID.
*\param mod_id Instance ID of eNB.
*\param ue_initial_id The UE initial ID sent to S1AP.
*\return the UE index or UE_INDEX_INVALID if not found.
*/
static uint8_t get_UE_index_from_initial_id(uint8_t mod_id, uint16_t ue_initial_id) {
uint8_t ue_index;
AssertFatal(mod_id < NB_eNB_INST, "eNB index invalid (%d/%d)!", mod_id, NB_eNB_INST);
LOG_D(RRC, "[eNB %d] get_UE_index_from_initial_id: ue_initial_id %d\n", ue_initial_id);
for (ue_index = 0; ue_index < NUMBER_OF_UE_MAX; ue_index++) {
/* Check if this UE is in use */
LOG_D(RRC, "[eNB %d][UE %d] UE rv 0x%" PRIx64 " %d\n", mod_id, ue_index,
eNB_rrc_inst[mod_id].Info.UE_list[ue_index], eNB_rrc_inst[mod_id].Info.UE[ue_index].ue_initial_id);
if (eNB_rrc_inst[mod_id].Info.UE_list[ue_index] != 0) {
/* Check if the initial id match */
if (eNB_rrc_inst[mod_id].Info.UE[ue_index].ue_initial_id == ue_initial_id) {
return ue_index;
}
}
}
return UE_INDEX_INVALID;
}
/*! \fn uint8_t get_UE_index_from_eNB_ue_s1ap_id(uint8_t mod_id, uint32_t eNB_ue_s1ap_id)
*\brief retrieve UE index in the eNB from the eNB_ue_s1ap_id previously transmitted by S1AP.
*\param mod_id Instance ID of eNB.
*\param eNB_ue_s1ap_id The value sent by S1AP.
*\return the UE index or UE_INDEX_INVALID if not found.
*/
static uint8_t get_UE_index_from_eNB_ue_s1ap_id(uint8_t mod_id, uint32_t eNB_ue_s1ap_id) {
uint8_t ue_index;
AssertFatal(mod_id < NB_eNB_INST, "eNB index invalid (%d/%d)!", mod_id, NB_eNB_INST);
LOG_D(RRC, "[eNB %d] get_UE_index_from_eNB_ue_s1ap_id: eNB_ue_s1ap_id %d\n", mod_id, eNB_ue_s1ap_id);
for (ue_index = 0; ue_index < NUMBER_OF_UE_MAX; ue_index++) {
/* Check if this UE is in use */
LOG_D(RRC, "[eNB %d][UE %d] UE rv 0x%" PRIx64 " %d\n", mod_id, ue_index,
eNB_rrc_inst[mod_id].Info.UE_list[ue_index], eNB_rrc_inst[mod_id].Info.UE[ue_index].eNB_ue_s1ap_id);
if (eNB_rrc_inst[mod_id].Info.UE_list[ue_index] != 0) {
/* Check if the initial id match */
if (eNB_rrc_inst[mod_id].Info.UE[ue_index].eNB_ue_s1ap_id == eNB_ue_s1ap_id) {
return ue_index;
}
}
}
LOG_D(RRC,
"[eNB %d] return UE_INDEX_INVALID for eNB_ue_s1ap_id %u\n",
mod_id,
eNB_ue_s1ap_id);
return UE_INDEX_INVALID;
}
/*! \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 uint8_t get_UE_index_from_s1ap_ids(uint8_t mod_id, uint16_t ue_initial_id, uint32_t eNB_ue_s1ap_id) {
uint8_t ue_index;
if (ue_initial_id == UE_INITIAL_ID_INVALID) {
/* If "ue_initial_id" is not set search if "eNB_ue_s1ap_id" is know by RRC */
ue_index = get_UE_index_from_eNB_ue_s1ap_id (mod_id, eNB_ue_s1ap_id);
}
else {
/* If "ue_initial_id" is set there is probably not yet an associated "eNB_ue_s1ap_id" with S1AP */
ue_index = get_UE_index_from_initial_id (mod_id, ue_initial_id);
}
return ue_index;
}
/*! \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 (uint8_t mod_id, uint8_t ue_index, security_capabilities_t *security_capabilities) {
int changed = FALSE;
e_SecurityAlgorithmConfig__cipheringAlgorithm cipheringAlgorithm;
e_SecurityAlgorithmConfig__integrityProtAlgorithm integrityProtAlgorithm;
/* Save security parameters */
eNB_rrc_inst[mod_id].Info.UE[ue_index].security_capabilities = *security_capabilities;
// 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",
mod_id,
eNB_rrc_inst[mod_id].Info.UE[ue_index].security_capabilities.encryption_algorithms,
eNB_rrc_inst[mod_id].ciphering_algorithm[ue_index],
eNB_rrc_inst[mod_id].Info.UE[ue_index].security_capabilities.integrity_algorithms,
eNB_rrc_inst[mod_id].integrity_algorithm[ue_index]);
/* Select relevant algorithms */
cipheringAlgorithm = rrc_eNB_select_ciphering (eNB_rrc_inst[mod_id].Info.UE[ue_index].security_capabilities.encryption_algorithms);
if (eNB_rrc_inst[mod_id].ciphering_algorithm[ue_index] != cipheringAlgorithm) {
eNB_rrc_inst[mod_id].ciphering_algorithm[ue_index] = cipheringAlgorithm;
changed = TRUE;
}
integrityProtAlgorithm = rrc_eNB_select_integrity (eNB_rrc_inst[mod_id].Info.UE[ue_index].security_capabilities.integrity_algorithms);
if (eNB_rrc_inst[mod_id].integrity_algorithm[ue_index] != integrityProtAlgorithm) {
eNB_rrc_inst[mod_id].integrity_algorithm[ue_index] = integrityProtAlgorithm;
changed = TRUE;
}
LOG_I (RRC, "[eNB %d][UE %d] Selected security algorithms (%x): %x, %x, %s\n",
mod_id, ue_index, security_capabilities, cipheringAlgorithm, integrityProtAlgorithm, changed ? "changed" : "same");
return changed;
}
/*! \fn void process_eNB_security_key (uint8_t mod_id, uint8_t ue_index, uint8_t *security_key)
*\brief save security key.
*\param mod_id Instance ID of eNB.
*\param ue_index Instance ID of UE in the eNB.
*\param security_key The security key received from S1AP.
*/
static void process_eNB_security_key (uint8_t mod_id, uint8_t ue_index, uint8_t *security_key) {
#if defined(ENABLE_SECURITY)
char ascii_buffer[65];
uint8_t i;
/* Saves the security key */
memcpy (eNB_rrc_inst[mod_id].kenb[ue_index], security_key, SECURITY_KEY_LENGTH);
for (i = 0; i < 32; i++) {
sprintf(&ascii_buffer[2 * i], "%02X", eNB_rrc_inst[mod_id].kenb[ue_index][i]);
}
ascii_buffer[2 * i] = '\0';
LOG_I (RRC, "[eNB %d][UE %d] Saved security key %s\n", mod_id, ue_index, ascii_buffer);
#endif
}
static void rrc_pdcp_config_security(uint8_t enb_mod_idP, uint8_t ue_mod_idP, uint8_t send_security_mode_command ){
#if defined(ENABLE_SECURITY)
SRB_ToAddModList_t *SRB_configList = eNB_rrc_inst[enb_mod_idP].SRB_configList[ue_mod_idP];
uint8_t *kRRCenc = NULL;
uint8_t *kRRCint = NULL;
uint8_t *kUPenc = NULL;
pdcp_t *pdcp_p = NULL;
static int print_keys= 1;
/* Derive the keys from kenb */
if (SRB_configList != NULL) {
derive_key_up_enc(eNB_rrc_inst[enb_mod_idP].ciphering_algorithm[ue_mod_idP],
eNB_rrc_inst[enb_mod_idP].kenb[ue_mod_idP], &kUPenc);
}
derive_key_rrc_enc(eNB_rrc_inst[enb_mod_idP].ciphering_algorithm[ue_mod_idP],
eNB_rrc_inst[enb_mod_idP].kenb[ue_mod_idP], &kRRCenc);
derive_key_rrc_int(eNB_rrc_inst[enb_mod_idP].integrity_algorithm[ue_mod_idP],
eNB_rrc_inst[enb_mod_idP].kenb[ue_mod_idP], &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", eNB_rrc_inst[enb_mod_idP].kenb[ue_mod_idP][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
pdcp_p = &pdcp_array_srb_eNB[enb_mod_idP][ue_mod_idP][DCCH-1];
pdcp_config_set_security(pdcp_p,
enb_mod_idP,
ue_mod_idP,
0,
ENB_FLAG_YES,
DCCH,
DCCH+2,
(send_security_mode_command == TRUE) ?
0 | (eNB_rrc_inst[enb_mod_idP].integrity_algorithm[ue_mod_idP] << 4) :
(eNB_rrc_inst[enb_mod_idP].ciphering_algorithm[ue_mod_idP] ) |
(eNB_rrc_inst[enb_mod_idP].integrity_algorithm[ue_mod_idP] << 4),
kRRCenc,
kRRCint,
kUPenc);
#endif
}
/*------------------------------------------------------------------------------*/
void rrc_eNB_send_S1AP_INITIAL_CONTEXT_SETUP_RESP(uint8_t mod_id, uint8_t ue_index) {
eNB_RRC_UE_INFO *UE_info = &eNB_rrc_inst[mod_id].Info.UE[ue_index];
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_info->eNB_ue_s1ap_id;
for (e_rab = 0; e_rab < UE_info->nb_of_e_rabs; e_rab++) {
if (UE_info->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_info->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_info->enb_gtp_teid[e_rab];
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs[e_rab].eNB_addr = UE_info->enb_gtp_addrs[e_rab];
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs[e_rab].eNB_addr.length = 4;
}
else {
e_rabs_failed++;
S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs_failed[e_rab].e_rab_id = UE_info->e_rab[e_rab].param.e_rab_id;
// TODO add cause when it will be integrated
}
}
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, mod_id, msg_p);
}
# endif
/*------------------------------------------------------------------------------*/
void rrc_eNB_send_S1AP_UPLINK_NAS(uint8_t mod_id, uint8_t ue_index, UL_DCCH_Message_t *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 = eNB_rrc_inst[mod_id].Info.UE[ue_index].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, mod_id, 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(uint8_t mod_id, uint8_t ue_index, 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 = eNB_rrc_inst[mod_id].Info.UE[ue_index].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, mod_id, msg_p);
if (ue_CapabilityRAT_ContainerList->list.count > 1) {
LOG_W (RRC,"[eNB %d][UE %d] can only handle 1 UE capability RAT item for now (%d)\n", mod_id, ue_index,
ue_CapabilityRAT_ContainerList->list.count);
}
}
}
/*------------------------------------------------------------------------------*/
void rrc_eNB_send_S1AP_NAS_FIRST_REQ(uint8_t mod_id, uint8_t ue_index,
RRCConnectionSetupComplete_r8_IEs_t *rrcConnectionSetupComplete) {
#if defined(ENABLE_ITTI)
{
MessageDef *message_p;
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));
eNB_rrc_inst[mod_id].Info.UE[ue_index].ue_initial_id = get_next_ue_initial_id (mod_id);
S1AP_NAS_FIRST_REQ (message_p).ue_initial_id = eNB_rrc_inst[mod_id].Info.UE[ue_index].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(eNB_rrc_inst[mod_id].Info.UE[ue_index].establishment_cause < RRC_CAUSE_LAST,
"Establishment cause invalid (%jd/%d) for eNB %d!",
eNB_rrc_inst[mod_id].Info.UE[ue_index].establishment_cause, RRC_CAUSE_LAST, mod_id);
S1AP_NAS_FIRST_REQ (message_p).establishment_cause = eNB_rrc_inst[mod_id].Info.UE[ue_index].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 (eNB_rrc_inst[mod_id].Info.UE[ue_index].Initialue_identity_s_TMSI.presence) {
/* Fill s-TMSI */
UE_S_TMSI *s_TMSI = &eNB_rrc_inst[mod_id].Info.UE[ue_index].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_index %d\n",
mod_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_index);
}
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_index %d\n",
mod_id,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mcc,
ue_index);
}
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_index %d\n",
mod_id,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mnc,
ue_index);
}
}
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);
LOG_I(S1AP, "[eNB %d] Build S1AP_NAS_FIRST_REQ adding in s_TMSI: GUMMEI mme_code %u mme_group_id %u ue_index %d\n",
mod_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_index);
}
}
itti_send_msg_to_task (TASK_S1AP, mod_id, message_p);
}
#else
{
s1ap_eNB_new_data_request (mod_id, ue_index,
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;
uint8_t ue_index;
uint32_t length;
uint8_t *buffer;
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_index = get_UE_index_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, ue_index %d\n", instance, msg_name, ue_initial_id, eNB_ue_s1ap_id, ue_index);
if (ue_index == UE_INDEX_INVALID) {
/* 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!
itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p);
return (-1);
}
else {
/* Is it the first income from S1AP ? */
if (eNB_rrc_inst[instance].Info.UE[ue_index].eNB_ue_s1ap_id == 0) {
eNB_rrc_inst[instance].Info.UE[ue_index].eNB_ue_s1ap_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 (instance, ue_index, 0 /* TODO put frame number ! */, 1, DCCH, *rrc_eNB_mui++, 0,
length, buffer, 1);
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;
uint8_t ue_index;
MessageDef *message_gtpv1u_p = NULL;
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_index = get_UE_index_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, ue_index %d\n",
instance, msg_name, ue_initial_id, eNB_ue_s1ap_id, S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).nb_of_e_rabs, ue_index);
if (ue_index == UE_INDEX_INVALID) {
/* 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 {
eNB_rrc_inst[instance].Info.UE[ue_index].eNB_ue_s1ap_id = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).eNB_ue_s1ap_id;
/* Save e RAB information for later */
{
int i;
message_gtpv1u_p = itti_alloc_new_message(TASK_S1AP, GTPV1U_ENB_CREATE_TUNNEL_REQ);
memset(&message_gtpv1u_p->ittiMsg.Gtpv1uCreateTunnelReq, 0 , sizeof(gtpv1u_enb_create_tunnel_req_t));
eNB_rrc_inst[instance].Info.UE[ue_index].nb_of_e_rabs = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).nb_of_e_rabs;
for (i = 0; i < eNB_rrc_inst[instance].Info.UE[ue_index].nb_of_e_rabs; i++) {
eNB_rrc_inst[instance].Info.UE[ue_index].e_rab[i].status = E_RAB_STATUS_NEW;
eNB_rrc_inst[instance].Info.UE[ue_index].e_rab[i].param = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i];
GTPV1U_ENB_CREATE_TUNNEL_REQ(message_gtpv1u_p).eps_bearer_id[i] = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i].e_rab_id;
GTPV1U_ENB_CREATE_TUNNEL_REQ(message_gtpv1u_p).sgw_S1u_teid[i] = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i].gtp_teid;
memcpy(&GTPV1U_ENB_CREATE_TUNNEL_REQ(message_gtpv1u_p).sgw_addr[i],
&S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i].sgw_addr,
sizeof(transport_layer_addr_t));
}
GTPV1U_ENB_CREATE_TUNNEL_REQ(message_gtpv1u_p).ue_index = ue_index; // warning put zero above
GTPV1U_ENB_CREATE_TUNNEL_REQ(message_gtpv1u_p).num_tunnels = i;
itti_send_msg_to_task(TASK_GTPV1_U, INSTANCE_DEFAULT, message_gtpv1u_p);
}
/* TODO parameters yet to process ... */
{
S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).ue_ambr;
}
rrc_eNB_process_security (instance, ue_index, &S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).security_capabilities);
process_eNB_security_key (instance, ue_index, S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).security_key);
{
uint8_t send_security_mode_command = TRUE;
#ifndef EXMIMO_IOT
if ((eNB_rrc_inst[instance].ciphering_algorithm[ue_index] == SecurityAlgorithmConfig__cipheringAlgorithm_eea0)
&& (eNB_rrc_inst[instance].integrity_algorithm[ue_index] == INTEGRITY_ALGORITHM_NONE)) {
send_security_mode_command = FALSE;
}
#endif
rrc_pdcp_config_security(instance, ue_index,send_security_mode_command);
if (send_security_mode_command) {
rrc_eNB_generate_SecurityModeCommand (instance, 0 /* TODO put frame number ! */, ue_index);
send_security_mode_command = FALSE;
// apply ciphering after RRC security command mode
rrc_pdcp_config_security(instance, ue_index,send_security_mode_command);
}
else {
rrc_eNB_generate_UECapabilityEnquiry (instance, 0 /* TODO put frame number ! */, ue_index);
}
}
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;
uint8_t ue_index;
eNB_ue_s1ap_id = S1AP_UE_CTXT_MODIFICATION_REQ (msg_p).eNB_ue_s1ap_id;
ue_index = get_UE_index_from_eNB_ue_s1ap_id (instance, eNB_ue_s1ap_id);
if (ue_index == UE_INDEX_INVALID) {
/* 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 {
/* 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 (instance, ue_index, &S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).security_capabilities)) {
/* transmit the new security parameters to UE */
rrc_eNB_generate_SecurityModeCommand (instance, 0 /* TODO put frame number ! */, ue_index);
}
}
if (S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).present & S1AP_UE_CONTEXT_MODIFICATION_SECURITY_KEY) {
process_eNB_security_key (instance, ue_index, 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);
}
}
/*------------------------------------------------------------------------------*/
#warning "LG Note this message is only from eNB to MME, proc to be deleted"
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;
uint8_t ue_index;
eNB_ue_s1ap_id = S1AP_UE_CONTEXT_RELEASE_REQ(msg_p).eNB_ue_s1ap_id;
ue_index = get_UE_index_from_eNB_ue_s1ap_id(instance, eNB_ue_s1ap_id);
if (ue_index == UE_INDEX_INVALID) {
/* 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) for eNB %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);
}
}
/*------------------------------------------------------------------------------*/
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;
uint8_t ue_index;
eNB_ue_s1ap_id = S1AP_UE_CONTEXT_RELEASE_COMMAND(msg_p).eNB_ue_s1ap_id;
ue_index = get_UE_index_from_eNB_ue_s1ap_id(instance, eNB_ue_s1ap_id);
if (ue_index == UE_INDEX_INVALID) {
/* 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) for eNB %d\n",
instance,
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);
return (-1);
}
else {
rrc_eNB_generate_RRCConnectionRelease(instance, 0 /*frame*/, ue_index);
LOG_W(RRC,
"[eNB %d] In S1AP_UE_CONTEXT_RELEASE_COMMAND: TODO call rrc_eNB_connection_release for eNB %d\n",
instance,
ue_index);
{
int e_rab;
int mod_id = 0;
eNB_RRC_UE_INFO *UE_info = &eNB_rrc_inst[mod_id].Info.UE[ue_index];
MessageDef *msg_delete_tunnels_p = NULL;
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).ue_index = ue_index;
for (e_rab = 0; e_rab < UE_info->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_info->enb_gtp_ebi[e_rab];
// erase data
UE_info->enb_gtp_teid[e_rab] = 0;
memset(&UE_info->enb_gtp_addrs[e_rab], 0, sizeof(UE_info->enb_gtp_addrs[e_rab]));
UE_info->enb_gtp_ebi[e_rab] = 0;
}
itti_send_msg_to_task(TASK_GTPV1_U, instance, msg_delete_tunnels_p);
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);
}
return (0);
}
}
# endif /* defined(ENABLE_ITTI) */
#endif /* defined(ENABLE_USE_MME) */
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