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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 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 "openair_defs.h"
//#include "openair_proto.h"
#include "defs.h"
#include "extern.h"
//#include "mac_lchan_interface.h"
//#include "openair_rrc_utils.h"
//#include "openair_rrc_main.h"
#include "UTIL/LOG/log.h"
#include "rrc_eNB_UE_context.h"
#include "pdcp.h"
#include "msc.h"
#include "common/ran_context.h"
#ifdef PHY_EMUL
#include "SIMULATION/simulation_defs.h"
extern EMULATION_VARS *Emul_vars;
extern eNB_MAC_INST *eNB_mac_inst;
extern UE_MAC_INST *UE_mac_inst;
#endif
#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif
#include "flexran_agent_extern.h"
//#define RRC_DATA_REQ_DEBUG
//#define DEBUG_RRC 1
extern RAN_CONTEXT_t RC;
//------------------------------------------------------------------------------
int8_t
mac_rrc_data_req(
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 mbsfn_sync_area
)
//--------------------------------------------------------------------------
{
asn_enc_rval_t enc_rval;
SRB_INFO *Srb_info;
uint8_t Sdu_size = 0;
uint8_t sfn = (uint8_t)((frameP>>2)&0xff);
#ifdef DEBUG_RRC
int i;
LOG_I(RRC,"[eNB %d] mac_rrc_data_req to SRB ID=%d\n",Mod_idP,Srb_id);
#endif
eNB_RRC_INST *rrc;
rrc_eNB_carrier_data_t *carrier;
BCCH_BCH_Message_t *mib;
rrc = RC.rrc[Mod_idP];
carrier = &rrc->carrier[0];
mib = &carrier->mib;
if((Srb_id & RAB_OFFSET) == BCCH) {
if(RC.rrc[Mod_idP]->carrier[CC_id].SI.Active==0) {
return 0;
}
// All even frames transmit SIB in SF 5
AssertFatal(RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1 != 255,
"[eNB %d] MAC Request for SIB1 and SIB1 not initialized\n",Mod_idP);
if ((frameP%2) == 0) {
memcpy(&buffer_pP[0],
RC.rrc[Mod_idP]->carrier[CC_id].SIB1,
RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1);
#if 0 //defined(ENABLE_ITTI)
{
MessageDef *message_p;
int sib1_size = RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1;
int sdu_size = sizeof(RRC_MAC_BCCH_DATA_REQ (message_p).sdu);
if (sib1_size > sdu_size) {
LOG_E(RRC, "SIB1 SDU larger than BCCH SDU buffer size (%d, %d)", sib1_size, sdu_size);
sib1_size = sdu_size;
}
message_p = itti_alloc_new_message (TASK_RRC_ENB, RRC_MAC_BCCH_DATA_REQ);
RRC_MAC_BCCH_DATA_REQ (message_p).frame = frameP;
RRC_MAC_BCCH_DATA_REQ (message_p).sdu_size = sib1_size;
memset (RRC_MAC_BCCH_DATA_REQ (message_p).sdu, 0, BCCH_SDU_SIZE);
memcpy (RRC_MAC_BCCH_DATA_REQ (message_p).sdu,
RC.rrc[Mod_idP]->carrier[CC_id].SIB1,
sib1_size);
RRC_MAC_BCCH_DATA_REQ (message_p).enb_index = eNB_index;
itti_send_msg_to_task (TASK_MAC_ENB, ENB_MODULE_ID_TO_INSTANCE(Mod_idP), message_p);
}
#endif
#ifdef DEBUG_RRC
LOG_T(RRC,"[eNB %d] Frame %d : BCCH request => SIB 1\n",Mod_idP,frameP);
for (i=0; i<RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1; i++) {
LOG_T(RRC,"%x.",buffer_pP[i]);
}
LOG_T(RRC,"\n");
#endif
return (RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1);
} // All RFN mod 8 transmit SIB2-3 in SF 5
else if ((frameP%8) == 1) {
memcpy(&buffer_pP[0],
RC.rrc[Mod_idP]->carrier[CC_id].SIB23,
RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB23);
#if 0 //defined(ENABLE_ITTI)
{
MessageDef *message_p;
int sib23_size = RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB23;
int sdu_size = sizeof(RRC_MAC_BCCH_DATA_REQ (message_p).sdu);
if (sib23_size > sdu_size) {
LOG_E(RRC, "SIB23 SDU larger than BCCH SDU buffer size (%d, %d)", sib23_size, sdu_size);
sib23_size = sdu_size;
}
message_p = itti_alloc_new_message (TASK_RRC_ENB, RRC_MAC_BCCH_DATA_REQ);
RRC_MAC_BCCH_DATA_REQ (message_p).frame = frameP;
RRC_MAC_BCCH_DATA_REQ (message_p).sdu_size = sib23_size;
memset (RRC_MAC_BCCH_DATA_REQ (message_p).sdu, 0, BCCH_SDU_SIZE);
memcpy (RRC_MAC_BCCH_DATA_REQ (message_p).sdu,
RC.rrc[Mod_idP]->carrier[CC_id].SIB23,
sib23_size);
RRC_MAC_BCCH_DATA_REQ (message_p).enb_index = eNB_index;
itti_send_msg_to_task (TASK_MAC_ENB, ENB_MODULE_ID_TO_INSTANCE(Mod_idP), message_p);
}
#endif
#ifdef DEBUG_RRC
LOG_T(RRC,"[eNB %d] Frame %d BCCH request => SIB 2-3\n",Mod_idP,frameP);
for (i=0; i<RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB23; i++) {
LOG_T(RRC,"%x.",buffer_pP[i]);
}
LOG_T(RRC,"\n");
#endif
return(RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB23);
} else {
return(0);
}
}
if( (Srb_id & RAB_OFFSET ) == MIBCH) {
mib->message.systemFrameNumber.buf = &sfn;
enc_rval = uper_encode_to_buffer(&asn_DEF_BCCH_BCH_Message,
NULL,
(void *)mib,
carrier->MIB,
24);
LOG_D(RRC,"Encoded MIB for frame %d (%p), bits %lu\n",sfn,carrier->MIB,enc_rval.encoded);
buffer_pP[0]=carrier->MIB[0];
buffer_pP[1]=carrier->MIB[1];
buffer_pP[2]=carrier->MIB[2];
AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n",
enc_rval.failed_type->name, enc_rval.encoded);
return(3);
}
if( (Srb_id & RAB_OFFSET ) == CCCH) {
LOG_T(RRC,"[eNB %d] Frame %d CCCH request (Srb_id %d)\n",Mod_idP,frameP, Srb_id);
if(RC.rrc[Mod_idP]->carrier[CC_id].Srb0.Active==0) {
LOG_E(RRC,"[eNB %d] CCCH Not active\n",Mod_idP);
return -1;
}
Srb_info=&RC.rrc[Mod_idP]->carrier[CC_id].Srb0;
// check if data is there for MAC
if(Srb_info->Tx_buffer.payload_size>0) { //Fill buffer
LOG_D(RRC,"[eNB %d] CCCH (%p) has %d bytes (dest: %p, src %p)\n",Mod_idP,Srb_info,Srb_info->Tx_buffer.payload_size,buffer_pP,Srb_info->Tx_buffer.Payload);
#if 0 // defined(ENABLE_ITTI)
{
MessageDef *message_p;
int ccch_size = Srb_info->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_ENB, 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, Srb_info->Tx_buffer.Payload, ccch_size);
RRC_MAC_CCCH_DATA_REQ (message_p).enb_index = eNB_index;
itti_send_msg_to_task (TASK_MAC_ENB, ENB_MODULE_ID_TO_INSTANCE(Mod_idP), message_p);
}
#endif
memcpy(buffer_pP,Srb_info->Tx_buffer.Payload,Srb_info->Tx_buffer.payload_size);
Sdu_size = Srb_info->Tx_buffer.payload_size;
Srb_info->Tx_buffer.payload_size=0;
}
return (Sdu_size);
}
if( (Srb_id & RAB_OFFSET ) == PCCH) {
LOG_T(RRC,"[eNB %d] Frame %d PCCH request (Srb_id %d)\n",Mod_idP,frameP, Srb_id);
// check if data is there for MAC
if(RC.rrc[Mod_idP]->carrier[CC_id].sizeof_paging[mbsfn_sync_area] > 0) { //Fill buffer
LOG_D(RRC,"[eNB %d] PCCH (%p) has %d bytes\n",Mod_idP,&RC.rrc[Mod_idP]->carrier[CC_id].paging[mbsfn_sync_area],
RC.rrc[Mod_idP]->carrier[CC_id].sizeof_paging[mbsfn_sync_area]);
#if 0 //defined(ENABLE_ITTI)
{
MessageDef *message_p;
int pcch_size = RC.rrc[Mod_idP]->arrier[CC_id].sizeof_paging[mbsfn_sync_area];
int sdu_size = sizeof(RRC_MAC_PCCH_DATA_REQ (message_p).sdu);
if (pcch_size > sdu_size) {
LOG_E(RRC, "SDU larger than PCCH SDU buffer size (%d, %d)", pcch_size, sdu_size);
pcch_size = sdu_size;
}
message_p = itti_alloc_new_message (TASK_RRC_ENB, RRC_MAC_PCCH_DATA_REQ);
RRC_MAC_PCCH_DATA_REQ (message_p).frame = frameP;
RRC_MAC_PCCH_DATA_REQ (message_p).sdu_size = pcch_size;
memset (RRC_MAC_PCCH_DATA_REQ (message_p).sdu, 0, PCCH_SDU_SIZE);
memcpy (RRC_MAC_PCCH_DATA_REQ (message_p).sdu, RC.rrc[Mod_idP]->carrier[CC_id].paging[mbsfn_sync_area], pcch_size);
RRC_MAC_PCCH_DATA_REQ (message_p).enb_index = eNB_index;
itti_send_msg_to_task (TASK_MAC_ENB, ENB_MODULE_ID_TO_INSTANCE(Mod_idP), message_p);
}
#endif
memcpy(buffer_pP, RC.rrc[Mod_idP]->carrier[CC_id].paging[mbsfn_sync_area], RC.rrc[Mod_idP]->carrier[CC_id].sizeof_paging[mbsfn_sync_area]);
Sdu_size = RC.rrc[Mod_idP]->carrier[CC_id].sizeof_paging[mbsfn_sync_area];
RC.rrc[Mod_idP]->carrier[CC_id].sizeof_paging[mbsfn_sync_area] = 0;
}
return (Sdu_size);
}
#if defined(Rel10) || defined(Rel14)
if((Srb_id & RAB_OFFSET) == MCCH) {
if(RC.rrc[Mod_idP]->carrier[CC_id].MCCH_MESS[mbsfn_sync_area].Active==0) {
return 0; // this parameter is set in function init_mcch in rrc_eNB.c
}
#if 0 // defined(ENABLE_ITTI)
{
MessageDef *message_p;
int mcch_size = RC.rrc[Mod_idP]->carrier[CC_id].sizeof_MCCH_MESSAGE[mbsfn_sync_area];
int sdu_size = sizeof(RRC_MAC_MCCH_DATA_REQ (message_p).sdu);
if (mcch_size > sdu_size) {
LOG_E(RRC, "SDU larger than MCCH SDU buffer size (%d, %d)", mcch_size, sdu_size);
mcch_size = sdu_size;
}
message_p = itti_alloc_new_message (TASK_RRC_ENB, RRC_MAC_MCCH_DATA_REQ);
RRC_MAC_MCCH_DATA_REQ (message_p).frame = frameP;
RRC_MAC_MCCH_DATA_REQ (message_p).sdu_size = mcch_size;
memset (RRC_MAC_MCCH_DATA_REQ (message_p).sdu, 0, MCCH_SDU_SIZE);
memcpy (RRC_MAC_MCCH_DATA_REQ (message_p).sdu,
RC.rrc[Mod_idP]->carrier[CC_id].MCCH_MESSAGE[mbsfn_sync_area],
mcch_size);
RRC_MAC_MCCH_DATA_REQ (message_p).enb_index = eNB_index;
RRC_MAC_MCCH_DATA_REQ (message_p).mbsfn_sync_area = mbsfn_sync_area;
itti_send_msg_to_task (TASK_MAC_ENB, ENB_MODULE_ID_TO_INSTANCE(Mod_idP), message_p);
}
#endif
memcpy(&buffer_pP[0],
RC.rrc[Mod_idP]->carrier[CC_id].MCCH_MESSAGE[mbsfn_sync_area],
RC.rrc[Mod_idP]->carrier[CC_id].sizeof_MCCH_MESSAGE[mbsfn_sync_area]);
#ifdef DEBUG_RRC
LOG_D(RRC,"[eNB %d] Frame %d : MCCH request => MCCH_MESSAGE \n",Mod_idP,frameP);
for (i=0; i<RC.rrc[Mod_idP]->carrier[CC_id].sizeof_MCCH_MESSAGE[mbsfn_sync_area]; i++) {
LOG_T(RRC,"%x.",buffer_pP[i]);
}
LOG_T(RRC,"\n");
#endif
return (RC.rrc[Mod_idP]->carrier[CC_id].sizeof_MCCH_MESSAGE[mbsfn_sync_area]);
// }
//else
//return(0);
}
#endif //Rel10 || Rel14
#ifdef Rel14
if ((Srb_id & RAB_OFFSET) == BCCH_SIB1_BR) {
memcpy(&buffer_pP[0],
RC.rrc[Mod_idP]->carrier[CC_id].SIB1_BR,
RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1_BR);
return (RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1_BR);
}
if ((Srb_id & RAB_OFFSET) == BCCH_SI_BR) { // First SI message with SIB2/3
memcpy(&buffer_pP[0],
RC.rrc[Mod_idP]->carrier[CC_id].SIB23_BR,
RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB23_BR);
return (RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB23_BR);
}
#endif
return(0);
}
//------------------------------------------------------------------------------
int8_t
mac_rrc_data_ind(
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 uint8_t mbsfn_sync_areaP
)
//--------------------------------------------------------------------------
{
SRB_INFO *Srb_info;
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, ENB_FLAG_YES, rntiP, frameP, sub_frameP,0);
Srb_info = &RC.rrc[module_idP]->carrier[CC_id].Srb0;
LOG_D(RRC,"[eNB %d] Received SDU for CCCH on SRB %d\n",module_idP,Srb_info->Srb_id);
#if 0 //defined(ENABLE_ITTI)
{
MessageDef *message_p;
int msg_sdu_size = sizeof(RRC_MAC_CCCH_DATA_IND (message_p).sdu);
if (sdu_lenP > msg_sdu_size) {
LOG_E(RRC, "SDU larger than CCCH 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_ENB, RRC_MAC_CCCH_DATA_IND);
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).rnti = rntiP;
RRC_MAC_CCCH_DATA_IND (message_p).sdu_size = sdu_size;
RRC_MAC_CCCH_DATA_IND (message_p).CC_id = CC_id;
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);
LOG_D(RRC,"[eNB %d] Sending message to RRC task\n",module_idP);
itti_send_msg_to_task (TASK_RRC_ENB, ctxt.instance, message_p);
}
#else
// msg("\n******INST %d Srb_info %p, Srb_id=%d****\n\n",Mod_id,Srb_info,Srb_info->Srb_id);
if (sdu_lenP > 0) {
memcpy(Srb_info->Rx_buffer.Payload,sduP,sdu_lenP);
Srb_info->Rx_buffer.payload_size = sdu_lenP;
rrc_eNB_decode_ccch(&ctxt, Srb_info, CC_id);
}
#endif
return(0);
}
//------------------------------------------------------------------------------
int
mac_eNB_get_rrc_status(
const module_id_t Mod_idP,
const rnti_t rntiP
)
//------------------------------------------------------------------------------
{
struct rrc_eNB_ue_context_s *ue_context_p = NULL;
ue_context_p = rrc_eNB_get_ue_context(
RC.rrc[Mod_idP],
rntiP);
if (ue_context_p != NULL) {
return(ue_context_p->ue_context.Status);
} else {
return RRC_INACTIVE;
}
}
void mac_eNB_rrc_ul_failure(const module_id_t Mod_instP,
const int CC_idP,
const frame_t frameP,
const sub_frame_t subframeP,
const rnti_t rntiP)
{
struct rrc_eNB_ue_context_s *ue_context_p = NULL;
ue_context_p = rrc_eNB_get_ue_context(
RC.rrc[Mod_instP],
rntiP);
if (ue_context_p != NULL) {
LOG_I(RRC,"Frame %d, Subframe %d: UE %x UL failure, activating timer\n",frameP,subframeP,rntiP);
if(ue_context_p->ue_context.ul_failure_timer == 0)
ue_context_p->ue_context.ul_failure_timer=1;
}
else {
LOG_W(RRC,"Frame %d, Subframe %d: UL failure: UE %x unknown \n",frameP,subframeP,rntiP);
}
if (rrc_agent_registered[Mod_instP]) {
agent_rrc_xface[Mod_instP]->flexran_agent_notify_ue_state_change(Mod_instP,
rntiP,
PROTOCOL__FLEX_UE_STATE_CHANGE_TYPE__FLUESC_DEACTIVATED);
}
// rrc_mac_remove_ue(Mod_instP,rntiP);
}
void mac_eNB_rrc_uplane_failure(const module_id_t Mod_instP,
const int CC_idP,
const frame_t frameP,
const sub_frame_t subframeP,
const rnti_t rntiP)
{
struct rrc_eNB_ue_context_s *ue_context_p = NULL;
ue_context_p = rrc_eNB_get_ue_context(
RC.rrc[Mod_instP],
rntiP);
if (ue_context_p != NULL) {
LOG_I(RRC,"Frame %d, Subframe %d: UE %x U-Plane failure, activating timer\n",frameP,subframeP,rntiP);
if(ue_context_p->ue_context.ul_failure_timer == 0)
ue_context_p->ue_context.ul_failure_timer=19999;
}
else {
LOG_W(RRC,"Frame %d, Subframe %d: U-Plane failure: UE %x unknown \n",frameP,subframeP,rntiP);
}
}
void mac_eNB_rrc_ul_in_sync(const module_id_t Mod_instP,
const int CC_idP,
const frame_t frameP,
const sub_frame_t subframeP,
const rnti_t rntiP)
{
struct rrc_eNB_ue_context_s *ue_context_p = NULL;
ue_context_p = rrc_eNB_get_ue_context(
RC.rrc[Mod_instP],
rntiP);
if (ue_context_p != NULL) {
LOG_I(RRC,"Frame %d, Subframe %d: UE %x to UL in synch\n",
frameP, subframeP, rntiP);
ue_context_p->ue_context.ul_failure_timer = 0;
} else {
LOG_E(RRC,"Frame %d, Subframe %d: UE %x unknown \n",
frameP, subframeP, rntiP);
}
}