/*
* 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 l2_interface.c
* \brief layer 2 interface, used to support different RRC sublayer
* \author Raymond Knopp and Navid Nikaein
* \date 2010-2014
* \version 1.0
* \company Eurecom
* \email: raymond.knopp@eurecom.fr
*/
#include "platform_types.h"
#include "rrc_defs.h"
#include "rrc_extern.h"
#include "UTIL/LOG/log.h"
#include "rrc_eNB_UE_context.h"
#include "pdcp.h"
#include "msc.h"
#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif
//#define RRC_DATA_REQ_DEBUG
//#define DEBUG_RRC 1
//------------------------------------------------------------------------------
int8_t
mac_rrc_data_req_ue(
const module_id_t Mod_idP,
const int CC_id,
const frame_t frameP,
const rb_id_t Srb_id,
const uint8_t Nb_tb,
uint8_t* const buffer_pP,
const uint8_t eNB_index,
const uint8_t mbsfn_sync_area
)
//--------------------------------------------------------------------------
{
#ifdef DEBUG_RRC
int i;
LOG_I(RRC,"[eNB %d] mac_rrc_data_req to SRB ID=%d\n",Mod_idP,Srb_id);
#endif
#if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
LOG_D(RRC,"[UE %d] Frame %d Filling SL DISCOVERY SRB_ID %d\n",Mod_idP,frameP,Srb_id);
LOG_D(RRC,"[UE %d] Frame %d buffer_pP status %d,\n",Mod_idP,frameP, UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.payload_size);
//TTN (for D2D)
if (Srb_id == SL_DISCOVERY && UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.payload_size > 0){
memcpy(&buffer_pP[0],&UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.Payload[0],UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.payload_size);
uint8_t Ret_size=UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.payload_size;
LOG_I(RRC,"[UE %d] Sending SL_Discovery, size %d bytes\n",Mod_idP,Ret_size);
UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.payload_size = 0;
return(Ret_size);
}
#endif
LOG_D(RRC,"[UE %d] Frame %d Filling CCCH SRB_ID %d\n",Mod_idP,frameP,Srb_id);
LOG_D(RRC,"[UE %d] Frame %d buffer_pP status %d,\n",Mod_idP,frameP, UE_rrc_inst[Mod_idP].Srb0[eNB_index].Tx_buffer.payload_size);
if( (UE_rrc_inst[Mod_idP].Srb0[eNB_index].Tx_buffer.payload_size > 0) ) {
#if defined(ENABLE_ITTI)
{
MessageDef *message_p;
int ccch_size = UE_rrc_inst[Mod_idP].Srb0[eNB_index].Tx_buffer.payload_size;
int sdu_size = sizeof(RRC_MAC_CCCH_DATA_REQ (message_p).sdu);
if (ccch_size > sdu_size) {
LOG_E(RRC, "SDU larger than CCCH SDU buffer size (%d, %d)", ccch_size, sdu_size);
ccch_size = sdu_size;
}
message_p = itti_alloc_new_message (TASK_RRC_UE, RRC_MAC_CCCH_DATA_REQ);
RRC_MAC_CCCH_DATA_REQ (message_p).frame = frameP;
RRC_MAC_CCCH_DATA_REQ (message_p).sdu_size = ccch_size;
memset (RRC_MAC_CCCH_DATA_REQ (message_p).sdu, 0, CCCH_SDU_SIZE);
memcpy (RRC_MAC_CCCH_DATA_REQ (message_p).sdu, UE_rrc_inst[Mod_idP].Srb0[eNB_index].Tx_buffer.Payload, ccch_size);
RRC_MAC_CCCH_DATA_REQ (message_p).enb_index = eNB_index;
itti_send_msg_to_task (TASK_MAC_UE, UE_MODULE_ID_TO_INSTANCE(Mod_idP), message_p);
}
#endif
memcpy(&buffer_pP[0],&UE_rrc_inst[Mod_idP].Srb0[eNB_index].Tx_buffer.Payload[0],UE_rrc_inst[Mod_idP].Srb0[eNB_index].Tx_buffer.payload_size);
uint8_t Ret_size=UE_rrc_inst[Mod_idP].Srb0[eNB_index].Tx_buffer.payload_size;
// UE_rrc_inst[Mod_id].Srb0[eNB_index].Tx_buffer.payload_size=0;
UE_rrc_inst[Mod_idP].Info[eNB_index].T300_active = 1;
UE_rrc_inst[Mod_idP].Info[eNB_index].T300_cnt = 0;
// msg("[RRC][UE %d] Sending rach\n",Mod_id);
return(Ret_size);
} else {
return 0;
}
return(0);
}
//------------------------------------------------------------------------------
int8_t
mac_rrc_data_ind_ue(
const module_id_t module_idP,
const int CC_id,
const frame_t frameP,
const sub_frame_t sub_frameP,
const rnti_t rntiP,
const rb_id_t srb_idP,
const uint8_t* sduP,
const sdu_size_t sdu_lenP,
const mac_enb_index_t eNB_indexP,
const uint8_t mbsfn_sync_areaP
)
//--------------------------------------------------------------------------
{
protocol_ctxt_t ctxt;
sdu_size_t sdu_size = 0;
/* for no gcc warnings */
(void)sdu_size;
/*
int si_window;
*/
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, 0, rntiP, frameP, sub_frameP,eNB_indexP);
if(srb_idP == BCCH) {
LOG_D(RRC,"[UE %d] Received SDU for BCCH on SRB %d from eNB %d\n",module_idP,srb_idP,eNB_indexP);
#if defined(ENABLE_ITTI)
{
MessageDef *message_p;
int msg_sdu_size = sizeof(RRC_MAC_BCCH_DATA_IND (message_p).sdu);
if (sdu_lenP > msg_sdu_size) {
LOG_E(RRC, "SDU larger than BCCH SDU buffer size (%d, %d)", sdu_lenP, msg_sdu_size);
sdu_size = msg_sdu_size;
} else {
sdu_size = sdu_lenP;
}
message_p = itti_alloc_new_message (TASK_MAC_UE, RRC_MAC_BCCH_DATA_IND);
memset (RRC_MAC_BCCH_DATA_IND (message_p).sdu, 0, BCCH_SDU_SIZE);
RRC_MAC_BCCH_DATA_IND (message_p).frame = frameP;
RRC_MAC_BCCH_DATA_IND (message_p).sub_frame = sub_frameP;
RRC_MAC_BCCH_DATA_IND (message_p).sdu_size = sdu_size;
memcpy (RRC_MAC_BCCH_DATA_IND (message_p).sdu, sduP, sdu_size);
RRC_MAC_BCCH_DATA_IND (message_p).enb_index = eNB_indexP;
RRC_MAC_BCCH_DATA_IND (message_p).rsrq = 30 /* TODO change phy to report rspq */;
RRC_MAC_BCCH_DATA_IND (message_p).rsrp = 45 /* TODO change phy to report rspp */;
itti_send_msg_to_task (TASK_RRC_UE, ctxt.instance, message_p);
}
#else
decode_BCCH_DLSCH_Message(&ctxt,eNB_indexP,(uint8_t*)sduP,sdu_lenP, 0, 0);
#endif
}
if(srb_idP == PCCH) {
LOG_D(RRC,"[UE %d] Received SDU for PCCH on SRB %d from eNB %d\n",module_idP,srb_idP,eNB_indexP);
decode_PCCH_DLSCH_Message(&ctxt,eNB_indexP,(uint8_t*)sduP,sdu_lenP);
}
if((srb_idP & RAB_OFFSET) == CCCH) {
if (sdu_lenP>0) {
LOG_T(RRC,"[UE %d] Received SDU for CCCH on SRB %d from eNB %d\n",module_idP,srb_idP & RAB_OFFSET,eNB_indexP);
#if defined(ENABLE_ITTI)
{
MessageDef *message_p;
int msg_sdu_size = CCCH_SDU_SIZE;
if (sdu_lenP > msg_sdu_size) {
LOG_E(RRC, "SDU larger than CCCH SDU buffer size (%d, %d)", sdu_size, msg_sdu_size);
sdu_size = msg_sdu_size;
} else {
sdu_size = sdu_lenP;
}
message_p = itti_alloc_new_message (TASK_MAC_UE, RRC_MAC_CCCH_DATA_IND);
memset (RRC_MAC_CCCH_DATA_IND (message_p).sdu, 0, CCCH_SDU_SIZE);
memcpy (RRC_MAC_CCCH_DATA_IND (message_p).sdu, sduP, sdu_size);
RRC_MAC_CCCH_DATA_IND (message_p).frame = frameP;
RRC_MAC_CCCH_DATA_IND (message_p).sub_frame = sub_frameP;
RRC_MAC_CCCH_DATA_IND (message_p).sdu_size = sdu_size;
RRC_MAC_CCCH_DATA_IND (message_p).enb_index = eNB_indexP;
RRC_MAC_CCCH_DATA_IND (message_p).rnti = rntiP;
itti_send_msg_to_task (TASK_RRC_UE, ctxt.instance, message_p);
}
#else
SRB_INFO *Srb_info;
Srb_info = &UE_rrc_inst[module_idP].Srb0[eNB_indexP];
memcpy(Srb_info->Rx_buffer.Payload,sduP,sdu_lenP);
Srb_info->Rx_buffer.payload_size = sdu_lenP;
rrc_ue_decode_ccch(&ctxt, Srb_info, eNB_indexP);
#endif
}
}
#if (RRC_VERSION >= MAKE_VERSION(10, 0, 0))
if ((srb_idP & RAB_OFFSET) == MCCH) {
LOG_T(RRC,"[UE %d] Frame %d: Received SDU on MBSFN sync area %d for MCCH on SRB %d from eNB %d\n",
module_idP,frameP, mbsfn_sync_areaP, srb_idP & RAB_OFFSET,eNB_indexP);
#if defined(ENABLE_ITTI)
{
MessageDef *message_p;
int msg_sdu_size = sizeof(RRC_MAC_MCCH_DATA_IND (message_p).sdu);
if (sdu_size > msg_sdu_size) {
LOG_E(RRC, "SDU larger than MCCH SDU buffer size (%d, %d)", sdu_size, msg_sdu_size);
sdu_size = msg_sdu_size;
}
message_p = itti_alloc_new_message (TASK_MAC_UE, RRC_MAC_MCCH_DATA_IND);
RRC_MAC_MCCH_DATA_IND (message_p).frame = frameP;
RRC_MAC_MCCH_DATA_IND (message_p).sub_frame = sub_frameP;
RRC_MAC_MCCH_DATA_IND (message_p).sdu_size = sdu_lenP;
memset (RRC_MAC_MCCH_DATA_IND (message_p).sdu, 0, MCCH_SDU_SIZE);
memcpy (RRC_MAC_MCCH_DATA_IND (message_p).sdu, sduP, sdu_lenP);
RRC_MAC_MCCH_DATA_IND (message_p).enb_index = eNB_indexP;
RRC_MAC_MCCH_DATA_IND (message_p).mbsfn_sync_area = mbsfn_sync_areaP;
itti_send_msg_to_task (TASK_RRC_UE, ctxt.instance, message_p);
}
#else
decode_MCCH_Message(&ctxt, eNB_indexP, sduP, sdu_lenP, mbsfn_sync_areaP);
#endif
}
//TTN (for D2D)
if(srb_idP == SL_DISCOVERY) {
LOG_I(RRC,"[UE %d] Received SDU (%d bytes) for SL_DISCOVERY on SRB %d from eNB %d\n",module_idP, sdu_lenP, srb_idP,eNB_indexP);
decode_SL_Discovery_Message(&ctxt, eNB_indexP, sduP, sdu_lenP);
}
#endif // #if (RRC_VERSION >= MAKE_VERSION(10, 0, 0))
return(0);
}
//------------------------------------------------------------------------------
uint8_t
rrc_data_req_ue(
const protocol_ctxt_t* const ctxt_pP,
const rb_id_t rb_idP,
const mui_t muiP,
const confirm_t confirmP,
const sdu_size_t sdu_sizeP,
uint8_t* const buffer_pP,
const pdcp_transmission_mode_t modeP
)
//------------------------------------------------------------------------------
{
MSC_LOG_TX_MESSAGE(
ctxt_pP->enb_flag ? MSC_RRC_ENB : MSC_RRC_UE,
ctxt_pP->enb_flag ? MSC_PDCP_ENB : MSC_PDCP_UE,
buffer_pP,
sdu_sizeP,
MSC_AS_TIME_FMT"RRC_DCCH_DATA_REQ UE %x MUI %d size %u",
MSC_AS_TIME_ARGS(ctxt_pP),
ctxt_pP->rnti,
muiP,
sdu_sizeP);
#if defined(ENABLE_ITTI)
{
MessageDef *message_p;
// Uses a new buffer to avoid issue with PDCP buffer content that could be changed by PDCP (asynchronous message handling).
uint8_t *message_buffer;
message_buffer = itti_malloc (
ctxt_pP->enb_flag ? TASK_RRC_ENB : TASK_RRC_UE,
ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE,
sdu_sizeP);
memcpy (message_buffer, buffer_pP, sdu_sizeP);
message_p = itti_alloc_new_message (ctxt_pP->enb_flag ? TASK_RRC_ENB : TASK_RRC_UE, RRC_DCCH_DATA_REQ);
RRC_DCCH_DATA_REQ (message_p).frame = ctxt_pP->frame;
RRC_DCCH_DATA_REQ (message_p).enb_flag = ctxt_pP->enb_flag;
RRC_DCCH_DATA_REQ (message_p).rb_id = rb_idP;
RRC_DCCH_DATA_REQ (message_p).muip = muiP;
RRC_DCCH_DATA_REQ (message_p).confirmp = confirmP;
RRC_DCCH_DATA_REQ (message_p).sdu_size = sdu_sizeP;
RRC_DCCH_DATA_REQ (message_p).sdu_p = message_buffer;
RRC_DCCH_DATA_REQ (message_p).mode = modeP;
RRC_DCCH_DATA_REQ (message_p).module_id = ctxt_pP->module_id;
RRC_DCCH_DATA_REQ (message_p).rnti = ctxt_pP->rnti;
RRC_DCCH_DATA_REQ (message_p).eNB_index = ctxt_pP->eNB_index;
itti_send_msg_to_task (
TASK_PDCP_UE,
ctxt_pP->instance,
message_p);
return TRUE; // TODO should be changed to a CNF message later, currently RRC lite does not used the returned value anyway.
}
#else
return pdcp_data_req (
ctxt_pP,
SRB_FLAG_YES,
rb_idP,
muiP,
confirmP,
sdu_sizeP,
buffer_pP,
modeP
#if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
,NULL, NULL
#endif
);
#endif
}
//------------------------------------------------------------------------------
void
rrc_data_ind_ue(
const protocol_ctxt_t* const ctxt_pP,
const rb_id_t Srb_id,
const sdu_size_t sdu_sizeP,
const uint8_t* const buffer_pP
)
//------------------------------------------------------------------------------
{
rb_id_t DCCH_index = Srb_id;
LOG_N(RRC, "[UE %x] Frame %d: received a DCCH %d message on SRB %d with Size %d from eNB %d\n",
ctxt_pP->module_id, ctxt_pP->frame, DCCH_index,Srb_id,sdu_sizeP, ctxt_pP->eNB_index);
#if defined(ENABLE_ITTI)
{
MessageDef *message_p;
// Uses a new buffer to avoid issue with PDCP buffer content that could be changed by PDCP (asynchronous message handling).
uint8_t *message_buffer;
message_buffer = itti_malloc (ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE, ctxt_pP->enb_flag ? TASK_RRC_ENB : TASK_RRC_UE, sdu_sizeP);
memcpy (message_buffer, buffer_pP, sdu_sizeP);
message_p = itti_alloc_new_message (ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE, RRC_DCCH_DATA_IND);
RRC_DCCH_DATA_IND (message_p).frame = ctxt_pP->frame;
RRC_DCCH_DATA_IND (message_p).dcch_index = DCCH_index;
RRC_DCCH_DATA_IND (message_p).sdu_size = sdu_sizeP;
RRC_DCCH_DATA_IND (message_p).sdu_p = message_buffer;
RRC_DCCH_DATA_IND (message_p).rnti = ctxt_pP->rnti;
RRC_DCCH_DATA_IND (message_p).module_id = ctxt_pP->module_id;
RRC_DCCH_DATA_IND (message_p).eNB_index = ctxt_pP->eNB_index;
itti_send_msg_to_task (TASK_RRC_UE, ctxt_pP->instance, message_p);
}
#else
//#warning "LG put 0 to arg4 that is eNB index"
rrc_ue_decode_dcch(
ctxt_pP,
DCCH_index,
buffer_pP,
0);
#endif
}
//-------------------------------------------------------------------------------------------//
void rrc_in_sync_ind(module_id_t Mod_idP, frame_t frameP, uint16_t eNB_index)
{
//-------------------------------------------------------------------------------------------//
#if defined(ENABLE_ITTI)
{
MessageDef *message_p;
//LOG_I(RRC,"sending a message to task_mac_ue\n");
message_p = itti_alloc_new_message (TASK_MAC_UE, RRC_MAC_IN_SYNC_IND);
RRC_MAC_IN_SYNC_IND (message_p).frame = frameP;
RRC_MAC_IN_SYNC_IND (message_p).enb_index = eNB_index;
itti_send_msg_to_task (TASK_RRC_UE, UE_MODULE_ID_TO_INSTANCE(Mod_idP), message_p);
}
#else
UE_rrc_inst[Mod_idP].Info[eNB_index].N310_cnt=0;
if (UE_rrc_inst[Mod_idP].Info[eNB_index].T310_active==1) {
UE_rrc_inst[Mod_idP].Info[eNB_index].N311_cnt++;
}
#endif
}
//-------------------------------------------------------------------------------------------//
void rrc_out_of_sync_ind(module_id_t Mod_idP, frame_t frameP, uint16_t eNB_index)
{
//-------------------------------------------------------------------------------------------//
if (UE_rrc_inst[Mod_idP].Info[eNB_index].N310_cnt>10)
LOG_I(RRC,"[UE %d] Frame %d: OUT OF SYNC FROM eNB %d (T310 active %d : T310 %d, N310 %d, N311 %d)\n ",
Mod_idP,frameP,eNB_index,
UE_rrc_inst[Mod_idP].Info[eNB_index].T300_active,
UE_rrc_inst[Mod_idP].Info[eNB_index].T310_cnt,
UE_rrc_inst[Mod_idP].Info[eNB_index].N310_cnt,
UE_rrc_inst[Mod_idP].Info[eNB_index].N311_cnt);
#if defined(ENABLE_ITTI)
{
MessageDef *message_p;
message_p = itti_alloc_new_message (TASK_MAC_UE, RRC_MAC_OUT_OF_SYNC_IND);
RRC_MAC_OUT_OF_SYNC_IND (message_p).frame = frameP;
RRC_MAC_OUT_OF_SYNC_IND (message_p).enb_index = eNB_index;
itti_send_msg_to_task (TASK_RRC_UE, UE_MODULE_ID_TO_INSTANCE(Mod_idP), message_p);
}
#else
UE_rrc_inst[Mod_idP].Info[eNB_index].N310_cnt++;
#endif
}
//------------------------------------------------------------------------------
int
mac_UE_get_rrc_status(
const module_id_t Mod_idP,
const uint8_t indexP
)
//------------------------------------------------------------------------------
{
if (UE_rrc_inst)
return(UE_rrc_inst[Mod_idP].Info[indexP].State);
else
return(-1);
}
//-------------------------------------------------------------------------------------------//
int mac_ue_ccch_success_ind(module_id_t Mod_idP, uint8_t eNB_index)
{
//-------------------------------------------------------------------------------------------//
#if defined(ENABLE_ITTI)
{
MessageDef *message_p;
message_p = itti_alloc_new_message (TASK_MAC_UE, RRC_MAC_CCCH_DATA_CNF);
RRC_MAC_CCCH_DATA_CNF (message_p).enb_index = eNB_index;
itti_send_msg_to_task (TASK_RRC_UE, UE_MODULE_ID_TO_INSTANCE(Mod_idP), message_p);
}
#else
// reset the tx buffer to indicate RRC that ccch was successfully transmitted (for example if contention resolution succeeds)
UE_rrc_inst[Mod_idP].Srb0[eNB_index].Tx_buffer.payload_size=0;
#endif
return 0;
}