Commit d6547c80 authored by Aikaterini Trilyraki's avatar Aikaterini Trilyraki

Merge branch 'develop' of https://gitlab.eurecom.fr/oai/openairinterface5g...

Merge branch 'develop' of https://gitlab.eurecom.fr/oai/openairinterface5g into bugfix-48-L1L2signaling
parents e3899ced 96365966
......@@ -163,7 +163,13 @@ typedef uint32_t mbms_session_id_t;
typedef uint16_t mbms_service_id_t;
typedef uint16_t rnti_t;
typedef uint8_t rrc_enb_index_t;
typedef uint8_t mme_code_t;
typedef uint32_t m_tmsi_t;
//Random UE identity length = 40 bits
#if ! defined(NOT_A_RANDOM_UE_IDENTITY)
#define NOT_A_RANDOM_UE_IDENTITY (uint64_t)0xFFFFFFFF
#endif
#if ! defined(NOT_A_RNTI)
#define NOT_A_RNTI (rnti_t)0
#endif
......
......@@ -2110,6 +2110,67 @@ do_RRCConnectionReestablishmentReject(
return((enc_rval.encoded+7)/8);
}
//------------------------------------------------------------------------------
uint8_t
do_RRCConnectionReject(
uint8_t Mod_id,
uint8_t* const buffer)
//------------------------------------------------------------------------------
{
asn_enc_rval_t enc_rval;
DL_CCCH_Message_t dl_ccch_msg;
RRCConnectionReject_t *rrcConnectionReject;
memset((void *)&dl_ccch_msg,0,sizeof(DL_CCCH_Message_t));
dl_ccch_msg.message.present = DL_CCCH_MessageType_PR_c1;
dl_ccch_msg.message.choice.c1.present = DL_CCCH_MessageType__c1_PR_rrcConnectionReject;
rrcConnectionReject = &dl_ccch_msg.message.choice.c1.choice.rrcConnectionReject;
// RRCConnectionReject
rrcConnectionReject->criticalExtensions.present = RRCConnectionReject__criticalExtensions_PR_c1;
rrcConnectionReject->criticalExtensions.choice.c1.present = RRCConnectionReject__criticalExtensions__c1_PR_rrcConnectionReject_r8;
/* let's put a wait time of 1s for the moment */
rrcConnectionReject->criticalExtensions.choice.c1.choice.rrcConnectionReject_r8.waitTime = 1;
#ifdef XER_PRINT
xer_fprint(stdout, &asn_DEF_DL_CCCH_Message, (void*)&dl_ccch_msg);
#endif
enc_rval = uper_encode_to_buffer(&asn_DEF_DL_CCCH_Message,
(void*)&dl_ccch_msg,
buffer,
100);
AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %ld)!\n",
enc_rval.failed_type->name, enc_rval.encoded);
#if defined(ENABLE_ITTI)
# if !defined(DISABLE_XER_SPRINT)
{
char message_string[20000];
size_t message_string_size;
if ((message_string_size = xer_sprint(message_string, sizeof(message_string), &asn_DEF_DL_CCCH_Message, (void *) &dl_ccch_msg)) > 0) {
MessageDef *msg_p;
msg_p = itti_alloc_new_message_sized (TASK_RRC_ENB, RRC_DL_CCCH, message_string_size + sizeof (IttiMsgText));
msg_p->ittiMsg.rrc_dl_ccch.size = message_string_size;
memcpy(&msg_p->ittiMsg.rrc_dl_ccch.text, message_string, message_string_size);
itti_send_msg_to_task(TASK_UNKNOWN, Mod_id, msg_p);
}
}
# endif
#endif
#ifdef USER_MODE
LOG_D(RRC,"RRCConnectionReject Encoded %d bits (%d bytes)\n",
enc_rval.encoded,(enc_rval.encoded+7)/8);
#endif
return((enc_rval.encoded+7)/8);
}
uint8_t do_RRCConnectionRelease(
uint8_t Mod_id,
uint8_t *buffer,
......
......@@ -218,6 +218,16 @@ do_RRCConnectionReestablishmentReject(
uint8_t Mod_id,
uint8_t* const buffer);
/**
\brief Generate an RRCConnectionReject DL-CCCH-Message (eNB).
@param Mod_id Module ID of eNB
@param buffer Pointer to PER-encoded ASN.1 description of DL-CCCH-Message PDU
@returns Size of encoded bit stream in bytes*/
uint8_t
do_RRCConnectionReject(
uint8_t Mod_id,
uint8_t* const buffer);
/**
\brief Generate an RRCConnectionRequest UL-CCCH-Message (UE) based on random string or S-TMSI. This
routine only generates an mo-data establishment cause.
......
......@@ -212,9 +212,9 @@ typedef struct UE_RRC_INFO_s {
} __attribute__ ((__packed__)) UE_RRC_INFO;
typedef struct UE_S_TMSI_s {
uint8_t presence;
uint8_t mme_code;
uint32_t m_tmsi;
boolean_t presence;
mme_code_t mme_code;
m_tmsi_t m_tmsi;
} __attribute__ ((__packed__)) UE_S_TMSI;
#if defined(ENABLE_ITTI)
......
......@@ -540,8 +540,8 @@ rrc_eNB_get_next_transaction_identifier(
//-----------------------------------------------------------------------------
// return 1 if there is already an UE with ue_identityP, 0 otherwise
static int
// return the ue context if there is already an UE with ue_identityP, NULL otherwise
static struct rrc_eNB_ue_context_s*
rrc_eNB_ue_context_random_exist(
const protocol_ctxt_t* const ctxt_pP,
const uint64_t ue_identityP
......@@ -551,9 +551,28 @@ rrc_eNB_ue_context_random_exist(
struct rrc_eNB_ue_context_s* ue_context_p = NULL;
RB_FOREACH(ue_context_p, rrc_ue_tree_s, &(eNB_rrc_inst[ctxt_pP->module_id].rrc_ue_head)) {
if (ue_context_p->ue_context.random_ue_identity == ue_identityP)
return 1;
return ue_context_p;
}
return 0;
return NULL;
}
//-----------------------------------------------------------------------------
// return the ue context if there is already an UE with the same S-TMSI(MMEC+M-TMSI), NULL otherwise
static struct rrc_eNB_ue_context_s*
rrc_eNB_ue_context_stmsi_exist(
const protocol_ctxt_t* const ctxt_pP,
const mme_code_t mme_codeP,
const m_tmsi_t m_tmsiP
)
//-----------------------------------------------------------------------------
{
struct rrc_eNB_ue_context_s* ue_context_p = NULL;
RB_FOREACH(ue_context_p, rrc_ue_tree_s, &(eNB_rrc_inst[ctxt_pP->module_id].rrc_ue_head)) {
if (ue_context_p->ue_context.Initialue_identity_s_TMSI.presence == TRUE)
if (ue_context_p->ue_context.Initialue_identity_s_TMSI.m_tmsi == m_tmsiP)
if (ue_context_p->ue_context.Initialue_identity_s_TMSI.mme_code == mme_codeP)
return ue_context_p;
}
return NULL;
}
//-----------------------------------------------------------------------------
......@@ -963,6 +982,49 @@ rrc_eNB_generate_UECapabilityEnquiry(
}
//-----------------------------------------------------------------------------
void
rrc_eNB_generate_RRCConnectionReject(
const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* const ue_context_pP,
const int CC_id
)
//-----------------------------------------------------------------------------
{
#ifdef RRC_MSG_PRINT
int cnt;
#endif
eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].Srb0.Tx_buffer.payload_size =
do_RRCConnectionReject(ctxt_pP->module_id,
(uint8_t*) eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].Srb0.Tx_buffer.Payload);
#ifdef RRC_MSG_PRINT
LOG_F(RRC,"[MSG] RRCConnectionReject\n");
for (cnt = 0; cnt < eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].Srb0.Tx_buffer.payload_size; cnt++) {
LOG_F(RRC,"%02x ", ((uint8_t*)eNB_rrc_inst[ctxt_pP->module_id].Srb0.Tx_buffer.Payload)[cnt]);
}
LOG_F(RRC,"\n");
#endif
MSC_LOG_TX_MESSAGE(
MSC_RRC_ENB,
MSC_RRC_UE,
eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].Srb0.Tx_buffer.Header,
eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].Srb0.Tx_buffer.payload_size,
MSC_AS_TIME_FMT" RRCConnectionReject UE %x size %u",
MSC_AS_TIME_ARGS(ctxt_pP),
ue_context_pP == NULL ? -1 : ue_context_pP->ue_context.rnti,
eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].Srb0.Tx_buffer.payload_size);
LOG_I(RRC,
PROTOCOL_RRC_CTXT_UE_FMT" [RAPROC] Logical Channel DL-CCCH, Generating RRCConnectionReject (bytes %d)\n",
PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
eNB_rrc_inst[ctxt_pP->module_id].carrier[CC_id].Srb0.Tx_buffer.payload_size);
}
//-----------------------------------------------------------------------------
void
rrc_eNB_generate_RRCConnectionReestablishmentReject(
......@@ -3627,47 +3689,39 @@ rrc_eNB_decode_ccch(
} else {
rrcConnectionRequest = &ul_ccch_msg->message.choice.c1.choice.rrcConnectionRequest.criticalExtensions.choice.rrcConnectionRequest_r8;
{
AssertFatal(rrcConnectionRequest->ue_Identity.present == InitialUE_Identity_PR_randomValue,
"unsupported InitialUE-Identity in RRCConnectionRequest");
AssertFatal(rrcConnectionRequest->ue_Identity.choice.randomValue.size == 5,
"wrong InitialUE-Identity randomValue size, expected 5, provided %d",
rrcConnectionRequest->ue_Identity.choice.randomValue.size);
memcpy(((uint8_t*) & random_value) + 3,
rrcConnectionRequest->ue_Identity.choice.randomValue.buf,
rrcConnectionRequest->ue_Identity.choice.randomValue.size);
/* if there is already a registered UE (with another RNTI) with this random_value,
* the current one must be removed from MAC/PHY (zombie UE)
*/
if (rrc_eNB_ue_context_random_exist(ctxt_pP, random_value)) {
AssertFatal(0 == 1, "TODO: remove UE fro MAC/PHY (how?)");
ue_context_p = NULL;
} else {
ue_context_p = rrc_eNB_get_next_free_ue_context(ctxt_pP, random_value);
}
}
LOG_D(RRC,
PROTOCOL_RRC_CTXT_UE_FMT" UE context: %X\n",
PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
ue_context_p);
if (ue_context_p != NULL) {
#if defined(ENABLE_ITTI)
/* Check s-TMSI presence in message */
ue_context_p->ue_context.Initialue_identity_s_TMSI.presence =
(rrcConnectionRequest->ue_Identity.present == InitialUE_Identity_PR_s_TMSI);
if (ue_context_p->ue_context.Initialue_identity_s_TMSI.presence) {
if (InitialUE_Identity_PR_randomValue == rrcConnectionRequest->ue_Identity.present) {
AssertFatal(rrcConnectionRequest->ue_Identity.choice.randomValue.size == 5,
"wrong InitialUE-Identity randomValue size, expected 5, provided %d",
rrcConnectionRequest->ue_Identity.choice.randomValue.size);
memcpy(((uint8_t*) & random_value) + 3,
rrcConnectionRequest->ue_Identity.choice.randomValue.buf,
rrcConnectionRequest->ue_Identity.choice.randomValue.size);
/* if there is already a registered UE (with another RNTI) with this random_value,
* the current one must be removed from MAC/PHY (zombie UE)
*/
if ((ue_context_p = rrc_eNB_ue_context_random_exist(ctxt_pP, random_value))) {
AssertFatal(0 == 1, "TODO: remove UE from MAC/PHY (how?)");
ue_context_p = NULL;
} else {
ue_context_p = rrc_eNB_get_next_free_ue_context(ctxt_pP, random_value);
}
} else if (InitialUE_Identity_PR_s_TMSI == rrcConnectionRequest->ue_Identity.present) {
/* Save s-TMSI */
S_TMSI_t s_TMSI = rrcConnectionRequest->ue_Identity.choice.s_TMSI;
ue_context_p->ue_context.Initialue_identity_s_TMSI.mme_code =
BIT_STRING_to_uint8(&s_TMSI.mmec);
ue_context_p->ue_context.Initialue_identity_s_TMSI.m_tmsi =
BIT_STRING_to_uint32(&s_TMSI.m_TMSI);
MSC_LOG_RX_DISCARDED_MESSAGE(
S_TMSI_t s_TMSI = rrcConnectionRequest->ue_Identity.choice.s_TMSI;
mme_code_t mme_code = BIT_STRING_to_uint8(&s_TMSI.mmec);
m_tmsi_t m_tmsi = BIT_STRING_to_uint32(&s_TMSI.m_TMSI);
random_value = (((uint64_t)mme_code) << 32) | m_tmsi;
if ((ue_context_p = rrc_eNB_ue_context_stmsi_exist(ctxt_pP, mme_code, m_tmsi))) {
AssertFatal(0 == 1, "TODO: remove UE from MAC/PHY (how?)");
ue_context_p = NULL;
} else {
ue_context_p = rrc_eNB_get_next_free_ue_context(ctxt_pP, NOT_A_RANDOM_UE_IDENTITY);
}
ue_context_p->ue_context.Initialue_identity_s_TMSI.presence = TRUE;
ue_context_p->ue_context.Initialue_identity_s_TMSI.mme_code = mme_code;
ue_context_p->ue_context.Initialue_identity_s_TMSI.m_tmsi = m_tmsi;
MSC_LOG_RX_MESSAGE(
MSC_RRC_ENB,
MSC_RRC_UE,
Srb_info->Rx_buffer.Payload,
......@@ -3676,25 +3730,30 @@ rrc_eNB_decode_ccch(
MSC_AS_TIME_ARGS(ctxt_pP),
ue_context_p->ue_context.rnti,
dec_rval.consumed,
s_TMSI.mmec,
s_TMSI.m_TMSI,
ue_context_p->ue_context.Initialue_identity_s_TMSI.mme_code,
ue_context_p->ue_context.Initialue_identity_s_TMSI.m_tmsi,
ue_context_p->ue_context.random_ue_identity);
} else {
MSC_LOG_RX_DISCARDED_MESSAGE(
MSC_RRC_ENB,
MSC_RRC_UE,
Srb_info->Rx_buffer.Payload,
dec_rval.consumed,
MSC_AS_TIME_FMT" RRCConnectionRequest UE %x size %u random UE id (0x%" PRIx64 ")",
MSC_AS_TIME_ARGS(ctxt_pP),
ue_context_p->ue_context.rnti,
dec_rval.consumed,
ue_context_p->ue_context.random_ue_identity);
LOG_E(RRC,
PROTOCOL_RRC_CTXT_UE_FMT" RRCConnectionRequest without random UE identity or S-TMSI not supported, let's reject the UE\n",
PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP));
rrc_eNB_generate_RRCConnectionReject(ctxt_pP,
rrc_eNB_get_ue_context(&eNB_rrc_inst[ctxt_pP->module_id], ctxt_pP->rnti),
CC_id);
break;
}
ue_context_p->ue_context.establishment_cause =
rrcConnectionRequest->establishmentCause;
}
LOG_D(RRC,
PROTOCOL_RRC_CTXT_UE_FMT" UE context: %X\n",
PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
ue_context_p);
if (ue_context_p != NULL) {
#if defined(ENABLE_ITTI)
ue_context_p->ue_context.establishment_cause = rrcConnectionRequest->establishmentCause;
LOG_I(RRC, PROTOCOL_RRC_CTXT_UE_FMT" Accept new connection from UE random UE identity (0x%" PRIx64 ") MME code %u TMSI %u cause %u\n",
PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
ue_context_p->ue_context.random_ue_identity,
......
......@@ -43,6 +43,7 @@
# include "RRC/LITE/defs.h"
# include "rrc_eNB_UE_context.h"
# include "rrc_eNB_S1AP.h"
# include "enb_config.h"
# if defined(ENABLE_ITTI)
# include "asn1_conversions.h"
......@@ -661,15 +662,16 @@ rrc_eNB_send_S1AP_NAS_FIRST_REQ(
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);
ctxt_pP->module_id,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.s_tmsi.mme_code,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.s_tmsi.m_tmsi,
ue_context_pP->ue_context.rnti);
}
if (rrcConnectionSetupComplete->registeredMME != NULL) {
/* Fill GUMMEI */
struct RegisteredMME *r_mme = rrcConnectionSetupComplete->registeredMME;
int selected_plmn_identity = rrcConnectionSetupComplete->selectedPLMN_Identity;
S1AP_NAS_FIRST_REQ (message_p).ue_identity.presenceMask |= UE_IDENTITIES_gummei;
......@@ -678,9 +680,9 @@ rrc_eNB_send_S1AP_NAS_FIRST_REQ(
/* Use first indicated PLMN MCC if it is defined */
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mcc = *r_mme->plmn_Identity->mcc->list.array[0];
LOG_I(S1AP, "[eNB %d] Build S1AP_NAS_FIRST_REQ adding in s_TMSI: GUMMEI MCC %u ue %x\n",
ctxt_pP->module_id,
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mcc,
ue_context_pP->ue_context.rnti);
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) {
......@@ -691,6 +693,14 @@ rrc_eNB_send_S1AP_NAS_FIRST_REQ(
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mnc,
ue_context_pP->ue_context.rnti);
}
} else {
const Enb_properties_array_t *enb_properties_p = NULL;
enb_properties_p = enb_config_get();
// actually the eNB configuration contains only one PLMN (can be up to 6)
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mcc = enb_properties_p->properties[ctxt_pP->module_id]->mcc;
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mnc = enb_properties_p->properties[ctxt_pP->module_id]->mnc;
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mnc_len = enb_properties_p->properties[ctxt_pP->module_id]->mnc_digit_length;
}
S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mme_code = BIT_STRING_to_uint8 (&r_mme->mmec);
......
......@@ -16,7 +16,7 @@ eNBs =
tracking_area_code = "1";
mobile_country_code = "208";
mobile_network_code = "92";
mobile_network_code = "95";
////////// Physical parameters:
......@@ -130,18 +130,18 @@ eNBs =
};
////////// MME parameters:
mme_ip_address = ( {ipv4 = "192.168.12.26";
mme_ip_address = ( {ipv4 = "192.168.12.17";
ipv6="192:168:30::17";
active="yes";
preference="ipv4";});
NETWORK_INTERFACES :
{
ENB_INTERFACE_NAME_FOR_S1_MME = "eth1";
ENB_IPV4_ADDRESS_FOR_S1_MME = "192.168.12.82/24";
ENB_INTERFACE_NAME_FOR_S1_MME = "eth0";
ENB_IPV4_ADDRESS_FOR_S1_MME = "192.168.12.213/24";
ENB_INTERFACE_NAME_FOR_S1U = "eth1";
ENB_IPV4_ADDRESS_FOR_S1U = "192.168.12.82/24";
ENB_INTERFACE_NAME_FOR_S1U = "eth0";
ENB_IPV4_ADDRESS_FOR_S1U = "192.168.12.213/24";
ENB_PORT_FOR_S1U = 2152; # Spec 2152
};
......
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