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d32cdd1f334ca0a7bd797106789e1a4fbd454d36
openairinterface5g/openair2/RRC/LITE/rrc_common.c
T
Cedric Roux 7757b9e7e7 import NFAPI work from David Price from Cisco (non-working commit, do not use it) 
It has been chosen to not include the full history of commits
from David. He included a binary version of wireshark, probably
a modified one that understands NFAPI. Wireshark is released under
the GPL license, we cannot include it in the repository. We could
have done a next commit to remove this binary. But then it would
still be present in the history of commits, which may not be allowed.
And it would take space on disk. We could edit the history to remove
wireshark entirely. But this operation is too complicated.

There was also a pcap capture file, which has nothing to do in
the history of commits and would take space on disk. There again,
it's too difficult to edit the history to remove it.

There was a file .gitignore that was also removed.

The original history can be found on David's repository:
https://gitlab.eurecom.fr/daveprice/openairinterface5g/
The branch is: nfapi-ru-rau-split.

A copy of that branch has been included in the internal OAI
repository, for those who have access to it.
The branch is the same. The last commit ID is
9106438239e0bc626ff1fa1d97d911caadd0fbb9.

You can compare the current commit with the commit 9106...
to see what differs.

The current commit has to be considered non-working.
The commit following the current commit will fix problems with
the work in the current commit.

If you use git bisect, don't spend time analyzing the current
commit.
2018-01-15 11:32:30 +01:00

493 lines
18 KiB
C
Raw Blame History

/*
* 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_common.c
* \brief rrc common procedures for eNB and UE
* \author Navid Nikaein and Raymond Knopp
* \date 2011 - 2014
* \version 1.0
* \company Eurecom
* \email: navid.nikaein@eurecom.fr and raymond.knopp@eurecom.fr
*/
#include "defs.h"
#include "extern.h"
#include "LAYER2/MAC/extern.h"
#include "COMMON/openair_defs.h"
#include "COMMON/platform_types.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "LAYER2/RLC/rlc.h"
#include "COMMON/mac_rrc_primitives.h"
#include "UTIL/LOG/log.h"
#include "asn1_msg.h"
#include "pdcp.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "rrc_eNB_UE_context.h"
#include "common/ran_context.h"
#ifdef LOCALIZATION
#include <sys/time.h>
#endif
#define DEBUG_RRC 1
extern RAN_CONTEXT_t RC;
extern UE_MAC_INST *UE_mac_inst;
extern mui_t rrc_eNB_mui;
//configure BCCH & CCCH Logical Channels and associated rrc_buffers, configure associated SRBs
//-----------------------------------------------------------------------------
void
openair_rrc_on(
const protocol_ctxt_t* const ctxt_pP
)
//-----------------------------------------------------------------------------
{
unsigned short i;
int CC_id;
if (ctxt_pP->enb_flag == ENB_FLAG_YES) {
LOG_I(RRC, PROTOCOL_RRC_CTXT_FMT" ENB:OPENAIR RRC IN....\n",
PROTOCOL_RRC_CTXT_ARGS(ctxt_pP));
for (CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
rrc_config_buffer (&RC.rrc[ctxt_pP->module_id]->carrier[CC_id].SI, BCCH, 1);
RC.rrc[ctxt_pP->module_id]->carrier[CC_id].SI.Active = 1;
rrc_config_buffer (&RC.rrc[ctxt_pP->module_id]->carrier[CC_id].Srb0, CCCH, 1);
RC.rrc[ctxt_pP->module_id]->carrier[CC_id].Srb0.Active = 1;
}
} else {
LOG_I(RRC, PROTOCOL_RRC_CTXT_FMT" UE?:OPENAIR RRC IN....\n",
PROTOCOL_RRC_CTXT_ARGS(ctxt_pP));
for (i = 0; i < NB_eNB_INST; i++) {
LOG_D(RRC, PROTOCOL_RRC_CTXT_FMT" Activating CCCH (eNB %d)\n",
PROTOCOL_RRC_CTXT_ARGS(ctxt_pP), i);
UE_rrc_inst[ctxt_pP->module_id].Srb0[i].Srb_id = CCCH;
memcpy (&UE_rrc_inst[ctxt_pP->module_id].Srb0[i].Lchan_desc[0], &CCCH_LCHAN_DESC, LCHAN_DESC_SIZE);
memcpy (&UE_rrc_inst[ctxt_pP->module_id].Srb0[i].Lchan_desc[1], &CCCH_LCHAN_DESC, LCHAN_DESC_SIZE);
rrc_config_buffer (&UE_rrc_inst[ctxt_pP->module_id].Srb0[i], CCCH, 1);
UE_rrc_inst[ctxt_pP->module_id].Srb0[i].Active = 1;
}
}
}
//-----------------------------------------------------------------------------
int
rrc_init_global_param(
void
)
//-----------------------------------------------------------------------------
{
//#ifdef USER_MODE
// Rrc_xface = (RRC_XFACE*)malloc16(sizeof(RRC_XFACE));
//#endif //USRE_MODE
// Rrc_xface->openair_rrc_top_init = openair_rrc_top_init;
// Rrc_xface->openair_rrc_eNB_init = openair_rrc_eNB_init;
// Rrc_xface->openair_rrc_UE_init = openair_rrc_ue_init;
// Rrc_xface->mac_rrc_data_ind = mac_rrc_data_ind;
//Rrc_xface->mac_rrc_data_req = mac_rrc_data_req;
// Rrc_xface->rrc_data_indP = (void *)rlcrrc_data_ind;
// Rrc_xface->rrc_rx_tx = rrc_rx_tx;
// Rrc_xface->mac_rrc_meas_ind = mac_rrc_meas_ind;
// Rrc_xface->get_rrc_status = get_rrc_status;
//Rrc_xface->rrc_get_status = ...
// Mac_rlc_xface->mac_out_of_sync_ind=mac_out_of_sync_ind;
#ifndef NO_RRM
// Rrc_xface->fn_rrc=fn_rrc;
#endif
// LOG_D(RRC, "[RRC]INIT_GLOBAL_PARAM: Mac_rlc_xface %p, rrc_rlc_register %p,rlcrrc_data_ind%p\n",Mac_rlc_xface,Mac_rlc_xface->rrc_rlc_register_rrc,rlcrrc_data_ind);
/*
if((Mac_rlc_xface==NULL) || (Mac_rlc_xface->rrc_rlc_register_rrc==NULL) ||
(rlcrrc_data_ind==NULL)) {
LOG_E(RRC,"Data structured is not initialized \n");
return -1;
}
*/
rrc_rlc_register_rrc (rrc_data_ind, NULL); //register with rlc
DCCH_LCHAN_DESC.transport_block_size = 4;
DCCH_LCHAN_DESC.max_transport_blocks = 16;
DCCH_LCHAN_DESC.Delay_class = 1;
DTCH_DL_LCHAN_DESC.transport_block_size = 52;
DTCH_DL_LCHAN_DESC.max_transport_blocks = 20;
DTCH_DL_LCHAN_DESC.Delay_class = 1;
DTCH_UL_LCHAN_DESC.transport_block_size = 52;
DTCH_UL_LCHAN_DESC.max_transport_blocks = 20;
DTCH_UL_LCHAN_DESC.Delay_class = 1;
Rlc_info_um.rlc_mode = RLC_MODE_UM;
Rlc_info_um.rlc.rlc_um_info.timer_reordering = 5;
Rlc_info_um.rlc.rlc_um_info.sn_field_length = 10;
Rlc_info_um.rlc.rlc_um_info.is_mXch = 0;
//Rlc_info_um.rlc.rlc_um_info.sdu_discard_mode=16;
Rlc_info_am_config.rlc_mode = RLC_MODE_AM;
Rlc_info_am_config.rlc.rlc_am_info.max_retx_threshold = 50;
Rlc_info_am_config.rlc.rlc_am_info.poll_pdu = 8;
Rlc_info_am_config.rlc.rlc_am_info.poll_byte = 1000;
Rlc_info_am_config.rlc.rlc_am_info.t_poll_retransmit = 15;
Rlc_info_am_config.rlc.rlc_am_info.t_reordering = 50;
Rlc_info_am_config.rlc.rlc_am_info.t_status_prohibit = 10;
return 0;
}
//-----------------------------------------------------------------------------
void
rrc_config_buffer(
SRB_INFO* Srb_info,
uint8_t Lchan_type,
uint8_t Role
)
//-----------------------------------------------------------------------------
{
Srb_info->Rx_buffer.payload_size = 0;
Srb_info->Tx_buffer.payload_size = 0;
}
//-----------------------------------------------------------------------------
void
rrc_t310_expiration(
const protocol_ctxt_t* const ctxt_pP,
const uint8_t eNB_index
)
//-----------------------------------------------------------------------------
{
if (UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].State != RRC_CONNECTED) {
LOG_D(RRC, "Timer 310 expired, going to RRC_IDLE\n");
UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].State = RRC_IDLE;
UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].UE_index = 0xffff;
UE_rrc_inst[ctxt_pP->module_id].Srb0[eNB_index].Rx_buffer.payload_size = 0;
UE_rrc_inst[ctxt_pP->module_id].Srb0[eNB_index].Tx_buffer.payload_size = 0;
UE_rrc_inst[ctxt_pP->module_id].Srb1[eNB_index].Srb_info.Rx_buffer.payload_size = 0;
UE_rrc_inst[ctxt_pP->module_id].Srb1[eNB_index].Srb_info.Tx_buffer.payload_size = 0;
if (UE_rrc_inst[ctxt_pP->module_id].Srb2[eNB_index].Active == 1) {
msg ("[RRC Inst %d] eNB_index %d, Remove RB %d\n ", ctxt_pP->module_id, eNB_index,
UE_rrc_inst[ctxt_pP->module_id].Srb2[eNB_index].Srb_info.Srb_id);
rrc_pdcp_config_req (ctxt_pP,
SRB_FLAG_YES,
CONFIG_ACTION_REMOVE,
UE_rrc_inst[ctxt_pP->module_id].Srb2[eNB_index].Srb_info.Srb_id,
0);
rrc_rlc_config_req (ctxt_pP,
SRB_FLAG_YES,
MBMS_FLAG_NO,
CONFIG_ACTION_REMOVE,
UE_rrc_inst[ctxt_pP->module_id].Srb2[eNB_index].Srb_info.Srb_id,
Rlc_info_um);
UE_rrc_inst[ctxt_pP->module_id].Srb2[eNB_index].Active = 0;
UE_rrc_inst[ctxt_pP->module_id].Srb2[eNB_index].Status = IDLE;
UE_rrc_inst[ctxt_pP->module_id].Srb2[eNB_index].Next_check_frame = 0;
}
} else { // Restablishment procedure
LOG_D(RRC, "Timer 310 expired, trying RRCRestablishment ...\n");
}
}
//-----------------------------------------------------------------------------
RRC_status_t
rrc_rx_tx(
protocol_ctxt_t* const ctxt_pP,
const uint8_t enb_indexP,
const int CC_id
)
//-----------------------------------------------------------------------------
{
//uint8_t UE_id;
int32_t current_timestamp_ms, ref_timestamp_ms;
struct timeval ts;
struct rrc_eNB_ue_context_s *ue_context_p = NULL,*ue_to_be_removed = NULL;
#ifdef LOCALIZATION
double estimated_distance;
protocol_ctxt_t ctxt;
#endif
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RRC_RX_TX,VCD_FUNCTION_IN);
if(ctxt_pP->enb_flag == ENB_FLAG_NO) {
// check timers
if (UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T300_active == 1) {
if ((UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T300_cnt % 10) == 0)
LOG_D(RRC,
"[UE %d][RAPROC] Frame %d T300 Count %d ms\n", ctxt_pP->module_id, ctxt_pP->frame, UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T300_cnt);
if (UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T300_cnt
== T300[UE_rrc_inst[ctxt_pP->module_id].sib2[enb_indexP]->ue_TimersAndConstants.t300]) {
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T300_active = 0;
// ALLOW CCCH to be used
UE_rrc_inst[ctxt_pP->module_id].Srb0[enb_indexP].Tx_buffer.payload_size = 0;
rrc_ue_generate_RRCConnectionRequest (ctxt_pP, enb_indexP);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RRC_RX_TX,VCD_FUNCTION_OUT);
return (RRC_ConnSetup_failed);
}
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T300_cnt++;
}
if ((UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].SIStatus&2)>0) {
if (UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].N310_cnt
== N310[UE_rrc_inst[ctxt_pP->module_id].sib2[enb_indexP]->ue_TimersAndConstants.n310]) {
LOG_I(RRC,"Activating T310\n");
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T310_active = 1;
}
} else { // in case we have not received SIB2 yet
/* if (UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].N310_cnt == 100) {
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].N310_cnt = 0;
}*/
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RRC_RX_TX,VCD_FUNCTION_OUT);
return RRC_OK;
}
if (UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T310_active == 1) {
if (UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].N311_cnt
== N311[UE_rrc_inst[ctxt_pP->module_id].sib2[enb_indexP]->ue_TimersAndConstants.n311]) {
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T310_active = 0;
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].N311_cnt = 0;
}
if ((UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T310_cnt % 10) == 0) {
LOG_D(RRC, "[UE %d] Frame %d T310 Count %d ms\n", ctxt_pP->module_id, ctxt_pP->frame, UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T310_cnt);
}
if (UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T310_cnt == T310[UE_rrc_inst[ctxt_pP->module_id].sib2[enb_indexP]->ue_TimersAndConstants.t310]) {
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T310_active = 0;
rrc_t310_expiration (ctxt_pP, enb_indexP);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RRC_RX_TX,VCD_FUNCTION_OUT);
LOG_I(RRC,"Returning RRC_PHY_RESYNCH: T310 expired\n");
return RRC_PHY_RESYNCH;
}
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T310_cnt++;
}
if (UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T304_active==1) {
if ((UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T304_cnt % 10) == 0)
LOG_D(RRC,"[UE %d][RAPROC] Frame %d T304 Count %d ms\n",ctxt_pP->module_id,ctxt_pP->frame,
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T304_cnt);
if (UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T304_cnt == 0) {
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T304_active = 0;
UE_rrc_inst[ctxt_pP->module_id].HandoverInfoUe.measFlag = 1;
LOG_E(RRC,"[UE %d] Handover failure..initiating connection re-establishment procedure... \n",
ctxt_pP->module_id);
//Implement 36.331, section 5.3.5.6 here
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RRC_RX_TX,VCD_FUNCTION_OUT);
return(RRC_Handover_failed);
}
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].T304_cnt--;
}
// Layer 3 filtering of RRC measurements
if (UE_rrc_inst[ctxt_pP->module_id].QuantityConfig[0] != NULL) {
ue_meas_filtering(ctxt_pP,enb_indexP);
}
ue_measurement_report_triggering(ctxt_pP,enb_indexP);
if (UE_rrc_inst[ctxt_pP->module_id].Info[0].handoverTarget > 0) {
LOG_I(RRC,"[UE %d] Frame %d : RRC handover initiated\n", ctxt_pP->module_id, ctxt_pP->frame);
}
if((UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].State == RRC_HO_EXECUTION) &&
(UE_rrc_inst[ctxt_pP->module_id].HandoverInfoUe.targetCellId != 0xFF)) {
UE_rrc_inst[ctxt_pP->module_id].Info[enb_indexP].State= RRC_IDLE;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RRC_RX_TX,VCD_FUNCTION_OUT);
return(RRC_HO_STARTED);
}
} else { // eNB
check_handovers(ctxt_pP);
// counetr, and get the value and aggregate
// check for UL failure
RB_FOREACH(ue_context_p, rrc_ue_tree_s, &(RC.rrc[ctxt_pP->module_id]->rrc_ue_head)) {
if ((ctxt_pP->frame == 0) && (ctxt_pP->subframe==0)) {
if (ue_context_p->ue_context.Initialue_identity_s_TMSI.presence == TRUE) {
LOG_I(RRC,"UE rnti %x:S-TMSI %x failure timer %d/20000\n",
ue_context_p->ue_context.rnti,
ue_context_p->ue_context.Initialue_identity_s_TMSI.m_tmsi,
ue_context_p->ue_context.ul_failure_timer);
}
else {
LOG_I(RRC,"UE rnti %x failure timer %d/20000\n",
ue_context_p->ue_context.rnti,
ue_context_p->ue_context.ul_failure_timer);
}
}
if (ue_context_p->ue_context.ul_failure_timer>0) {
ue_context_p->ue_context.ul_failure_timer++;
if (ue_context_p->ue_context.ul_failure_timer >= 20000) {
// remove UE after 20 seconds after MAC has indicated UL failure
LOG_I(RRC,"Removing UE %x instance\n",ue_context_p->ue_context.rnti);
ue_to_be_removed = ue_context_p;
break;
}
}
if (ue_context_p->ue_context.ue_release_timer>0) {
ue_context_p->ue_context.ue_release_timer++;
if (ue_context_p->ue_context.ue_release_timer >=
ue_context_p->ue_context.ue_release_timer_thres) {
LOG_I(RRC,"Removing UE %x instance\n",ue_context_p->ue_context.rnti);
ue_to_be_removed = ue_context_p;
break;
}
}
}
if (ue_to_be_removed)
rrc_eNB_free_UE(ctxt_pP->module_id,ue_to_be_removed);
#ifdef RRC_LOCALIZATION
/* for the localization, only primary CC_id might be relevant*/
gettimeofday(&ts, NULL);
current_timestamp_ms = ts.tv_sec * 1000 + ts.tv_usec / 1000;
ref_timestamp_ms = RC.rrc[ctxt_pP->module_id]->reference_timestamp_ms;
RB_FOREACH(ue_context_p, rrc_ue_tree_s, &(RC.rrc[ctxt_pP->module_id]->rrc_ue_head)) {
ctxt = *ctxt_pP;
ctxt.rnti = ue_context_p->ue_context.rnti;
estimated_distance = rrc_get_estimated_ue_distance(
&ctxt,
CC_id,
RC.rrc[ctxt_pP->module_id]->loc_type);
if ((current_timestamp_ms - ref_timestamp_ms > RC.rrc[ctxt_pP->module_id]->aggregation_period_ms) &&
estimated_distance != -1) {
LOG_D(LOCALIZE, " RRC [UE/id %d -> eNB/id %d] timestamp %d frame %d estimated r = %f\n",
ctxt.rnti,
ctxt_pP->module_id,
current_timestamp_ms,
ctxt_pP->frame,
estimated_distance);
LOG_D(LOCALIZE, " RRC status %d\n", ue_context_p->ue_context.Status);
push_front(&RC.rrc[ctxt_pP->module_id]->loc_list,
estimated_distance);
RC.rrc[ctxt_pP->module_id]->reference_timestamp_ms = current_timestamp_ms;
}
}
#endif
(void)ts; /* remove gcc warning "unused variable" */
(void)ref_timestamp_ms; /* remove gcc warning "unused variable" */
(void)current_timestamp_ms; /* remove gcc warning "unused variable" */
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RRC_RX_TX,VCD_FUNCTION_OUT);
return (RRC_OK);
}
//-----------------------------------------------------------------------------
long
binary_search_int(
int elements[],
long numElem,
int value
)
//-----------------------------------------------------------------------------
{
long first, last, middle, search = -1;
first = 0;
last = numElem-1;
middle = (first+last)/2;
if(value < elements[0]) {
return first;
}
if(value > elements[last]) {
return last;
}
while (first <= last) {
if (elements[middle] < value) {
first = middle+1;
} else if (elements[middle] == value) {
search = middle+1;
break;
} else {
last = middle -1;
}
middle = (first+last)/2;
}
if (first > last) {
LOG_E(RRC,"Error in binary search!");
}
return search;
}
/* This is a binary search routine which operates on an array of floating
point numbers and returns the index of the range the value lies in
Used for RSRP and RSRQ measurement mapping. Can potentially be used for other things
*/
//-----------------------------------------------------------------------------
long
binary_search_float(
float elements[],
long numElem,
float value
)
//-----------------------------------------------------------------------------
{
long first, last, middle;
first = 0;
last = numElem-1;
middle = (first+last)/2;
if(value <= elements[0]) {
return first;
}
if(value >= elements[last]) {
return last;
}
while (last - first > 1) {
if (elements[middle] > value) {
last = middle;
} else {
first = middle;
}
middle = (first+last)/2;
}
if (first < 0 || first >= numElem) {
LOG_E(RRC,"\n Error in binary search float!");
}
return first;
}
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