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openairinterface5g/openair2/LAYER2/rlc_v2/rlc_oai_api.c
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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
*/
/* from openair */
#include "rlc.h"
#include "pdcp.h"
/* from new rlc module */
#include "asn1_utils.h"
#include "rlc_ue_manager.h"
#include "rlc_entity.h"
#include <stdint.h>
static rlc_ue_manager_t *rlc_ue_manager;
/* TODO: handle time a bit more properly */
static uint64_t rlc_current_time;
static int rlc_current_time_last_frame;
static int rlc_current_time_last_subframe;
void mac_rlc_data_ind (
const module_id_t module_idP,
const rnti_t rntiP,
const eNB_index_t eNB_index,
const frame_t frameP,
const eNB_flag_t enb_flagP,
const MBMS_flag_t MBMS_flagP,
const logical_chan_id_t channel_idP,
char *buffer_pP,
const tb_size_t tb_sizeP,
num_tb_t num_tbP,
crc_t *crcs_pP)
{
rlc_ue_t *ue;
rlc_entity_t *rb;
int rnti;
int channel_id;
if (enb_flagP == 1 && module_idP != 0) {
LOG_E(RLC, "%s:%d:%s: fatal, module_id must be 0 for eNB\n",
__FILE__, __LINE__, __FUNCTION__);
exit(1);
}
if (/*module_idP != 0 ||*/ eNB_index != 0 /*|| enb_flagP != 1 || MBMS_flagP != 0*/) {
LOG_E(RLC, "%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
if (enb_flagP)
T(T_ENB_RLC_MAC_UL, T_INT(module_idP), T_INT(rntiP),
T_INT(channel_idP), T_INT(tb_sizeP));
/* TODO: better handle mbms, maybe we should not change rnti here */
if (!enb_flagP && MBMS_flagP) {
rnti = 0xfffd;
/* TODO: handle channel_id properly */
if (channel_idP != 5) {
LOG_E(RLC, "%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
channel_id = 7;
} else {
rnti = rntiP;
channel_id = channel_idP;
}
rlc_manager_lock(rlc_ue_manager);
ue = rlc_manager_get_ue(rlc_ue_manager, rnti);
switch (channel_id) {
case 1 ... 2: rb = ue->srb[channel_id - 1]; break;
case 3 ... 7: rb = ue->drb[channel_id - 3]; break;
default: rb = NULL; break;
}
if (rb != NULL) {
rb->set_time(rb, rlc_current_time);
rb->recv_pdu(rb, buffer_pP, tb_sizeP);
} else {
LOG_E(RLC, "%s:%d:%s: fatal: no RB found (rnti %d channel ID %d)\n",
__FILE__, __LINE__, __FUNCTION__, rnti, channel_id);
exit(1);
}
rlc_manager_unlock(rlc_ue_manager);
}
tbs_size_t mac_rlc_data_req(
const module_id_t module_idP,
const rnti_t rntiP,
const eNB_index_t eNB_index,
const frame_t frameP,
const eNB_flag_t enb_flagP,
const MBMS_flag_t MBMS_flagP,
const logical_chan_id_t channel_idP,
const tb_size_t tb_sizeP,
char *buffer_pP,
const uint32_t sourceL2Id,
const uint32_t destinationL2Id
)
{
int ret;
rlc_ue_t *ue;
rlc_entity_t *rb;
int maxsize;
rlc_manager_lock(rlc_ue_manager);
ue = rlc_manager_get_ue(rlc_ue_manager, rntiP);
switch (channel_idP) {
case 1 ... 2: rb = ue->srb[channel_idP - 1]; break;
case 3 ... 7: rb = ue->drb[channel_idP - 3]; break;
default: rb = NULL; break;
}
if (MBMS_flagP == MBMS_FLAG_YES) {
if (channel_idP >= 1 && channel_idP <= 5)
rb = ue->drb[channel_idP - 1];
else
rb = NULL;
}
if (rb != NULL) {
rb->set_time(rb, rlc_current_time);
maxsize = tb_sizeP;
ret = rb->generate_pdu(rb, buffer_pP, maxsize);
} else {
LOG_E(RLC, "%s:%d:%s: fatal: data req for unknown RB\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
ret = 0;
}
rlc_manager_unlock(rlc_ue_manager);
if (enb_flagP)
T(T_ENB_RLC_MAC_DL, T_INT(module_idP), T_INT(rntiP),
T_INT(channel_idP), T_INT(ret));
return ret;
}
mac_rlc_status_resp_t mac_rlc_status_ind(
const module_id_t module_idP,
const rnti_t rntiP,
const eNB_index_t eNB_index,
const frame_t frameP,
const sub_frame_t subframeP,
const eNB_flag_t enb_flagP,
const MBMS_flag_t MBMS_flagP,
const logical_chan_id_t channel_idP,
const uint32_t sourceL2Id,
const uint32_t destinationL2Id
)
{
rlc_ue_t *ue;
mac_rlc_status_resp_t ret;
rlc_entity_t *rb;
rlc_manager_lock(rlc_ue_manager);
ue = rlc_manager_get_ue(rlc_ue_manager, rntiP);
switch (channel_idP) {
case 1 ... 2: rb = ue->srb[channel_idP - 1]; break;
case 3 ... 7: rb = ue->drb[channel_idP - 3]; break;
default: rb = NULL; break;
}
if (MBMS_flagP == MBMS_FLAG_YES) {
if (channel_idP >= 1 && channel_idP <= 5)
rb = ue->drb[channel_idP - 1];
else
rb = NULL;
}
if (rb != NULL) {
rlc_entity_buffer_status_t buf_stat;
rb->set_time(rb, rlc_current_time);
/* 36.321 deals with BSR values up to 3000000 bytes, after what it
* reports '> 3000000' (table 6.1.3.1-2). Passing 4000000 is thus
* more than enough.
*/
buf_stat = rb->buffer_status(rb, 4000000);
ret.bytes_in_buffer = buf_stat.status_size
+ buf_stat.retx_size
+ buf_stat.tx_size;
} else {
ret.bytes_in_buffer = 0;
}
rlc_manager_unlock(rlc_ue_manager);
ret.pdus_in_buffer = 0;
/* TODO: creation time may be important (unit: frame, as it seems) */
ret.head_sdu_creation_time = 0;
ret.head_sdu_remaining_size_to_send = 0;
ret.head_sdu_is_segmented = 0;
return ret;
}
rlc_buffer_occupancy_t mac_rlc_get_buffer_occupancy_ind(
const module_id_t module_idP,
const rnti_t rntiP,
const eNB_index_t eNB_index,
const frame_t frameP,
const sub_frame_t subframeP,
const eNB_flag_t enb_flagP,
const logical_chan_id_t channel_idP)
{
rlc_ue_t *ue;
rlc_buffer_occupancy_t ret;
rlc_entity_t *rb;
if (enb_flagP) {
LOG_E(RLC, "Tx mac_rlc_get_buffer_occupancy_ind function is not implemented for eNB LcId=%u\n", channel_idP);
exit(1);
}
rlc_manager_lock(rlc_ue_manager);
ue = rlc_manager_get_ue(rlc_ue_manager, rntiP);
switch (channel_idP) {
case 1 ... 2: rb = ue->srb[channel_idP - 1]; break;
case 3 ... 7: rb = ue->drb[channel_idP - 3]; break;
default: rb = NULL; break;
}
if (rb != NULL) {
rlc_entity_buffer_status_t buf_stat;
rb->set_time(rb, rlc_current_time);
/* 36.321 deals with BSR values up to 3000000 bytes, after what it
* reports '> 3000000' (table 6.1.3.1-2). Passing 4000000 is thus
* more than enough.
*/
buf_stat = rb->buffer_status(rb, 4000000);
ret = buf_stat.status_size
+ buf_stat.retx_size
+ buf_stat.tx_size;
} else {
ret = 0;
}
rlc_manager_unlock(rlc_ue_manager);
return ret;
}
rlc_op_status_t rlc_data_req (const protocol_ctxt_t *const ctxt_pP,
const srb_flag_t srb_flagP,
const MBMS_flag_t MBMS_flagP,
const rb_id_t rb_idP,
const mui_t muiP,
confirm_t confirmP,
sdu_size_t sdu_sizeP,
mem_block_t *sdu_pP,
const uint32_t *const sourceL2Id,
const uint32_t *const destinationL2Id
)
{
int rnti = ctxt_pP->rnti;
rlc_ue_t *ue;
rlc_entity_t *rb;
if (MBMS_flagP == MBMS_FLAG_YES)
rnti = 0xfffd;
LOG_D(RLC, "%s rnti %d srb_flag %d rb_id %d mui %d confirm %d sdu_size %d MBMS_flag %d\n",
__FUNCTION__, rnti, srb_flagP, (int)rb_idP, muiP, confirmP, sdu_sizeP,
MBMS_flagP);
if (ctxt_pP->enb_flag)
T(T_ENB_RLC_DL, T_INT(ctxt_pP->module_id),
T_INT(ctxt_pP->rnti), T_INT(rb_idP), T_INT(sdu_sizeP));
rlc_manager_lock(rlc_ue_manager);
ue = rlc_manager_get_ue(rlc_ue_manager, rnti);
rb = NULL;
if (srb_flagP) {
if (rb_idP >= 1 && rb_idP <= 2)
rb = ue->srb[rb_idP - 1];
} else {
if (rb_idP >= 1 && rb_idP <= 5)
rb = ue->drb[rb_idP - 1];
}
if( MBMS_flagP == MBMS_FLAG_YES) {
if (rb_idP >= 1 && rb_idP <= 5)
rb = ue->drb[rb_idP - 1];
}
if (rb != NULL) {
rb->set_time(rb, rlc_current_time);
rb->recv_sdu(rb, (char *)sdu_pP->data, sdu_sizeP, muiP);
} else {
LOG_E(RLC, "%s:%d:%s: fatal: SDU sent to unknown RB\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
rlc_manager_unlock(rlc_ue_manager);
free_mem_block(sdu_pP, __func__);
return RLC_OP_STATUS_OK;
}
int rlc_module_init(int enb_flag)
{
static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
static int inited = 0;
if (pthread_mutex_lock(&lock)) abort();
if (inited) {
LOG_E(RLC, "%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
inited = 1;
rlc_ue_manager = new_rlc_ue_manager(enb_flag);
if (pthread_mutex_unlock(&lock)) abort();
return 0;
}
void rlc_util_print_hex_octets(comp_name_t componentP, unsigned char *dataP, const signed long sizeP)
{
}
#include "common/ran_context.h"
extern RAN_CONTEXT_t RC;
static void deliver_sdu(void *_ue, rlc_entity_t *entity, char *buf, int size)
{
rlc_ue_t *ue = _ue;
int is_srb;
int rb_id;
protocol_ctxt_t ctx;
mem_block_t *memblock;
int i;
int is_enb;
int is_mbms;
/* TODO: be sure it's fine to check rnti for MBMS */
is_mbms = ue->rnti == 0xfffd;
/* is it SRB? */
for (i = 0; i < 2; i++) {
if (entity == ue->srb[i]) {
is_srb = 1;
rb_id = i+1;
goto rb_found;
}
}
/* maybe DRB? */
for (i = 0; i < 5; i++) {
if (entity == ue->drb[i]) {
is_srb = 0;
rb_id = i+1;
goto rb_found;
}
}
LOG_E(RLC, "%s:%d:%s: fatal, no RB found for ue %d\n",
__FILE__, __LINE__, __FUNCTION__, ue->rnti);
exit(1);
rb_found:
LOG_D(RLC, "%s:%d:%s: delivering SDU (rnti %d is_srb %d rb_id %d) size %d",
__FILE__, __LINE__, __FUNCTION__, ue->rnti, is_srb, rb_id, size);
memblock = get_free_mem_block(size, __func__);
if (memblock == NULL) {
LOG_E(RLC, "%s:%d:%s: ERROR: get_free_mem_block failed\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
memcpy(memblock->data, buf, size);
/* unused fields? */
ctx.instance = ue->module_id;
ctx.frame = 0;
ctx.subframe = 0;
ctx.eNB_index = 0;
ctx.configured = 1;
ctx.brOption = 0;
/* used fields? */
ctx.module_id = ue->module_id;
ctx.rnti = ue->rnti;
is_enb = rlc_manager_get_enb_flag(rlc_ue_manager);
ctx.enb_flag = is_enb;
if (is_enb) {
T(T_ENB_RLC_UL,
T_INT(0 /*ctxt_pP->module_id*/),
T_INT(ue->rnti), T_INT(rb_id), T_INT(size));
const ngran_node_t type = RC.rrc[0 /*ctxt_pP->module_id*/]->node_type;
AssertFatal(type != ngran_eNB_CU && type != ngran_ng_eNB_CU && type != ngran_gNB_CU,
"Can't be CU, bad node type %d\n", type);
if (NODE_IS_DU(type) && is_srb == 1) {
MessageDef *msg = itti_alloc_new_message(TASK_RLC_ENB, 0, F1AP_UL_RRC_MESSAGE);
F1AP_UL_RRC_MESSAGE(msg).rnti = ue->rnti;
F1AP_UL_RRC_MESSAGE(msg).srb_id = rb_id;
F1AP_UL_RRC_MESSAGE(msg).rrc_container = (unsigned char *)buf;
F1AP_UL_RRC_MESSAGE(msg).rrc_container_length = size;
itti_send_msg_to_task(TASK_DU_F1, ENB_MODULE_ID_TO_INSTANCE(0 /*ctxt_pP->module_id*/), msg);
return;
}
}
if (!get_pdcp_data_ind_func()(&ctx, is_srb, is_mbms, rb_id, size, memblock, NULL, NULL)) {
LOG_E(RLC, "%s:%d:%s: ERROR: pdcp_data_ind failed (is_srb %d rb_id %d rnti %d)\n",
__FILE__, __LINE__, __FUNCTION__,
is_srb, rb_id, ue->rnti);
/* what to do in case of failure? for the moment: nothing */
}
}
static void successful_delivery(void *_ue, rlc_entity_t *entity, int sdu_id)
{
rlc_ue_t *ue = _ue;
int i;
int is_srb;
int rb_id;
MessageDef *msg;
int is_enb;
/* is it SRB? */
for (i = 0; i < 2; i++) {
if (entity == ue->srb[i]) {
is_srb = 1;
rb_id = i+1;
goto rb_found;
}
}
/* maybe DRB? */
for (i = 0; i < 5; i++) {
if (entity == ue->drb[i]) {
is_srb = 0;
rb_id = i+1;
goto rb_found;
}
}
LOG_E(RLC, "%s:%d:%s: fatal, no RB found for ue %d\n",
__FILE__, __LINE__, __FUNCTION__, ue->rnti);
exit(1);
rb_found:
LOG_D(RLC, "sdu %d was successfully delivered on %s %d\n",
sdu_id,
is_srb ? "SRB" : "DRB",
rb_id);
/* TODO: do something for DRBs? */
if (is_srb == 0)
return;
is_enb = rlc_manager_get_enb_flag(rlc_ue_manager);
if (!is_enb)
return;
msg = itti_alloc_new_message(TASK_RLC_ENB, 0, RLC_SDU_INDICATION);
RLC_SDU_INDICATION(msg).rnti = ue->rnti;
RLC_SDU_INDICATION(msg).is_successful = 1;
RLC_SDU_INDICATION(msg).srb_id = rb_id;
RLC_SDU_INDICATION(msg).message_id = sdu_id;
/* TODO: accept more than 1 instance? here we send to instance id 0 */
itti_send_msg_to_task(TASK_RRC_ENB, 0, msg);
}
static void max_retx_reached(void *_ue, rlc_entity_t *entity)
{
rlc_ue_t *ue = _ue;
int i;
int is_srb;
int rb_id;
MessageDef *msg;
int is_enb;
/* is it SRB? */
for (i = 0; i < 2; i++) {
if (entity == ue->srb[i]) {
is_srb = 1;
rb_id = i+1;
goto rb_found;
}
}
/* maybe DRB? */
for (i = 0; i < 5; i++) {
if (entity == ue->drb[i]) {
is_srb = 0;
rb_id = i+1;
goto rb_found;
}
}
LOG_E(RLC, "%s:%d:%s: fatal, no RB found for ue %d\n",
__FILE__, __LINE__, __FUNCTION__, ue->rnti);
exit(1);
rb_found:
LOG_D(RLC, "max RETX reached on %s %d\n",
is_srb ? "SRB" : "DRB",
rb_id);
/* TODO: do something for DRBs? */
if (is_srb == 0)
return;
is_enb = rlc_manager_get_enb_flag(rlc_ue_manager);
if (!is_enb)
return;
msg = itti_alloc_new_message(TASK_RLC_ENB, 0, RLC_SDU_INDICATION);
RLC_SDU_INDICATION(msg).rnti = ue->rnti;
RLC_SDU_INDICATION(msg).is_successful = 0;
RLC_SDU_INDICATION(msg).srb_id = rb_id;
RLC_SDU_INDICATION(msg).message_id = -1;
/* TODO: accept more than 1 instance? here we send to instance id 0 */
itti_send_msg_to_task(TASK_RRC_ENB, 0, msg);
}
static void add_srb(int rnti, int module_id, struct LTE_SRB_ToAddMod *s)
{
rlc_entity_t *rlc_am;
rlc_ue_t *ue;
struct LTE_SRB_ToAddMod__rlc_Config *r = s->rlc_Config;
struct LTE_SRB_ToAddMod__logicalChannelConfig *l = s->logicalChannelConfig;
int srb_id = s->srb_Identity;
int logical_channel_group;
int t_reordering;
int t_status_prohibit;
int t_poll_retransmit;
int poll_pdu;
int poll_byte;
int max_retx_threshold;
if (srb_id != 1 && srb_id != 2) {
LOG_E(RLC, "%s:%d:%s: fatal, bad srb id %d\n",
__FILE__, __LINE__, __FUNCTION__, srb_id);
exit(1);
}
switch (l->present) {
case LTE_SRB_ToAddMod__logicalChannelConfig_PR_explicitValue:
logical_channel_group = *l->choice.explicitValue.ul_SpecificParameters->logicalChannelGroup;
break;
case LTE_SRB_ToAddMod__logicalChannelConfig_PR_defaultValue:
/* default value from 36.331 9.2.1 */
logical_channel_group = 0;
break;
default:
LOG_E(RLC, "%s:%d:%s: fatal error\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
/* TODO: accept other values? */
if (logical_channel_group != 0) {
LOG_E(RLC, "%s:%d:%s: fatal error\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
switch (r->present) {
case LTE_SRB_ToAddMod__rlc_Config_PR_explicitValue: {
struct LTE_RLC_Config__am *am;
if (r->choice.explicitValue.present != LTE_RLC_Config_PR_am) {
LOG_E(RLC, "%s:%d:%s: fatal error, must be RLC AM\n",
__FILE__, __LINE__, __FUNCTION__);
exit(1);
}
am = &r->choice.explicitValue.choice.am;
t_reordering = decode_t_reordering(am->dl_AM_RLC.t_Reordering);
t_status_prohibit = decode_t_status_prohibit(am->dl_AM_RLC.t_StatusProhibit);
t_poll_retransmit = decode_t_poll_retransmit(am->ul_AM_RLC.t_PollRetransmit);
poll_pdu = decode_poll_pdu(am->ul_AM_RLC.pollPDU);
poll_byte = decode_poll_byte(am->ul_AM_RLC.pollByte);
max_retx_threshold = decode_max_retx_threshold(am->ul_AM_RLC.maxRetxThreshold);
break;
}
case LTE_SRB_ToAddMod__rlc_Config_PR_defaultValue:
/* default values from 36.331 9.2.1 */
t_reordering = 35;
t_status_prohibit = 0;
t_poll_retransmit = 45;
poll_pdu = -1;
poll_byte = -1;
max_retx_threshold = 4;
break;
default:
LOG_E(RLC, "%s:%d:%s: fatal error\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
rlc_manager_lock(rlc_ue_manager);
ue = rlc_manager_get_ue(rlc_ue_manager, rnti);
ue->module_id = module_id;
if (ue->srb[srb_id-1] != NULL) {
LOG_D(RLC, "%s:%d:%s: warning SRB %d already exist for ue %d, do nothing\n",
__FILE__, __LINE__, __FUNCTION__, srb_id, rnti);
} else {
rlc_am = new_rlc_entity_am(100000,
100000,
deliver_sdu, ue,
successful_delivery, ue,
max_retx_reached, ue,
t_reordering, t_status_prohibit,
t_poll_retransmit,
poll_pdu, poll_byte, max_retx_threshold);
rlc_ue_add_srb_rlc_entity(ue, srb_id, rlc_am);
LOG_D(RLC, "%s:%d:%s: added SRB %d to UE RNTI %x\n", __FILE__, __LINE__, __FUNCTION__, srb_id, rnti);
}
rlc_manager_unlock(rlc_ue_manager);
}
static void add_drb_am(int rnti, int module_id, struct LTE_DRB_ToAddMod *s)
{
rlc_entity_t *rlc_am;
rlc_ue_t *ue;
struct LTE_RLC_Config *r = s->rlc_Config;
struct LTE_LogicalChannelConfig *l = s->logicalChannelConfig;
int drb_id = s->drb_Identity;
int channel_id = *s->logicalChannelIdentity;
int logical_channel_group;
int t_reordering;
int t_status_prohibit;
int t_poll_retransmit;
int poll_pdu;
int poll_byte;
int max_retx_threshold;
if (!(drb_id >= 1 && drb_id <= 5)) {
LOG_E(RLC, "%s:%d:%s: fatal, bad srb id %d\n",
__FILE__, __LINE__, __FUNCTION__, drb_id);
exit(1);
}
if (channel_id != drb_id + 2) {
LOG_E(RLC, "%s:%d:%s: todo, remove this limitation\n",
__FILE__, __LINE__, __FUNCTION__);
exit(1);
}
logical_channel_group = *l->ul_SpecificParameters->logicalChannelGroup;
/* TODO: accept other values? */
if (logical_channel_group != 1) {
LOG_E(RLC, "%s:%d:%s: fatal error\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
switch (r->present) {
case LTE_RLC_Config_PR_am: {
struct LTE_RLC_Config__am *am;
am = &r->choice.am;
t_reordering = decode_t_reordering(am->dl_AM_RLC.t_Reordering);
t_status_prohibit = decode_t_status_prohibit(am->dl_AM_RLC.t_StatusProhibit);
t_poll_retransmit = decode_t_poll_retransmit(am->ul_AM_RLC.t_PollRetransmit);
poll_pdu = decode_poll_pdu(am->ul_AM_RLC.pollPDU);
poll_byte = decode_poll_byte(am->ul_AM_RLC.pollByte);
max_retx_threshold = decode_max_retx_threshold(am->ul_AM_RLC.maxRetxThreshold);
break;
}
default:
LOG_E(RLC, "%s:%d:%s: fatal error\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
rlc_manager_lock(rlc_ue_manager);
ue = rlc_manager_get_ue(rlc_ue_manager, rnti);
ue->module_id = module_id;
if (ue->drb[drb_id-1] != NULL) {
LOG_D(RLC, "%s:%d:%s: warning DRB %d already exist for ue %d, do nothing\n",
__FILE__, __LINE__, __FUNCTION__, drb_id, rnti);
} else {
rlc_am = new_rlc_entity_am(1000000,
1000000,
deliver_sdu, ue,
successful_delivery, ue,
max_retx_reached, ue,
t_reordering, t_status_prohibit,
t_poll_retransmit,
poll_pdu, poll_byte, max_retx_threshold);
rlc_ue_add_drb_rlc_entity(ue, drb_id, rlc_am);
LOG_D(RLC, "%s:%d:%s: added DRB %d to UE RNTI %x\n", __FILE__, __LINE__, __FUNCTION__, drb_id, rnti);
}
rlc_manager_unlock(rlc_ue_manager);
}
static void add_drb_um(int rnti, int module_id, struct LTE_DRB_ToAddMod *s)
{
rlc_entity_t *rlc_um;
rlc_ue_t *ue;
struct LTE_RLC_Config *r = s->rlc_Config;
struct LTE_LogicalChannelConfig *l = s->logicalChannelConfig;
int drb_id = s->drb_Identity;
int channel_id = *s->logicalChannelIdentity;
int logical_channel_group;
int t_reordering;
int sn_field_length;
if (!(drb_id >= 1 && drb_id <= 5)) {
LOG_E(RLC, "%s:%d:%s: fatal, bad srb id %d\n",
__FILE__, __LINE__, __FUNCTION__, drb_id);
exit(1);
}
if (channel_id != drb_id + 2) {
LOG_E(RLC, "%s:%d:%s: todo, remove this limitation\n",
__FILE__, __LINE__, __FUNCTION__);
exit(1);
}
logical_channel_group = *l->ul_SpecificParameters->logicalChannelGroup;
/* TODO: accept other values? */
if (logical_channel_group != 1) {
LOG_E(RLC, "%s:%d:%s: fatal error\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
switch (r->present) {
case LTE_RLC_Config_PR_um_Bi_Directional: {
struct LTE_RLC_Config__um_Bi_Directional *um;
um = &r->choice.um_Bi_Directional;
t_reordering = decode_t_reordering(um->dl_UM_RLC.t_Reordering);
if (um->dl_UM_RLC.sn_FieldLength != um->ul_UM_RLC.sn_FieldLength) {
LOG_E(RLC, "%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
sn_field_length = decode_sn_field_length(um->dl_UM_RLC.sn_FieldLength);
break;
}
default:
LOG_E(RLC, "%s:%d:%s: fatal error\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
rlc_manager_lock(rlc_ue_manager);
ue = rlc_manager_get_ue(rlc_ue_manager, rnti);
ue->module_id = module_id;
if (ue->drb[drb_id-1] != NULL) {
LOG_D(RLC, "%s:%d:%s: warning DRB %d already exist for ue %d, do nothing\n",
__FILE__, __LINE__, __FUNCTION__, drb_id, rnti);
} else {
rlc_um = new_rlc_entity_um(1000000,
1000000,
deliver_sdu, ue,
t_reordering,
sn_field_length);
rlc_ue_add_drb_rlc_entity(ue, drb_id, rlc_um);
LOG_D(RLC, "%s:%d:%s: added DRB %d to UE RNTI %x\n", __FILE__, __LINE__, __FUNCTION__, drb_id, rnti);
}
rlc_manager_unlock(rlc_ue_manager);
}
static void add_drb(int rnti, int module_id, struct LTE_DRB_ToAddMod *s)
{
switch (s->rlc_Config->present) {
case LTE_RLC_Config_PR_am:
add_drb_am(rnti, module_id, s);
break;
case LTE_RLC_Config_PR_um_Bi_Directional:
add_drb_um(rnti, module_id, s);
break;
default:
LOG_E(RLC, "%s:%d:%s: fatal: unhandled DRB type\n",
__FILE__, __LINE__, __FUNCTION__);
exit(1);
}
}
rlc_op_status_t rrc_rlc_config_asn1_req (const protocol_ctxt_t * const ctxt_pP,
const LTE_SRB_ToAddModList_t * const srb2add_listP,
const LTE_DRB_ToAddModList_t * const drb2add_listP,
const LTE_DRB_ToReleaseList_t * const drb2release_listP,
const LTE_PMCH_InfoList_r9_t * const pmch_InfoList_r9_pP,
const uint32_t sourceL2Id,
const uint32_t destinationL2Id
)
{
int rnti = ctxt_pP->rnti;
int module_id = ctxt_pP->module_id;
int i;
int j;
if (ctxt_pP->enb_flag == 1 &&
(ctxt_pP->module_id != 0 || ctxt_pP->instance != 0)) {
LOG_E(RLC, "%s: module_id != 0 or instance != 0 not handled for eNB\n",
__FUNCTION__);
exit(1);
}
if (0 /*||
ctxt_pP->instance != 0 || ctxt_pP->eNB_index != 0 ||
ctxt_pP->configured != 1 || ctxt_pP->brOption != 0 */) {
LOG_E(RLC, "%s: ctxt_pP not handled (%d %d %ld %d %d %d)\n", __FUNCTION__,
ctxt_pP->enb_flag , ctxt_pP->module_id, ctxt_pP->instance,
ctxt_pP->eNB_index, ctxt_pP->configured, ctxt_pP->brOption);
exit(1);
}
if (pmch_InfoList_r9_pP != NULL) {
int mbms_rnti = 0xfffd;
LTE_MBMS_SessionInfoList_r9_t *mbms_SessionInfoList_r9_p = NULL;
LTE_MBMS_SessionInfo_r9_t *MBMS_SessionInfo_p = NULL;
mbms_session_id_t mbms_session_id;
mbms_service_id_t mbms_service_id;
rb_id_t drb_id = 0;
logical_chan_id_t lc_id = 0;
//LTE_DRB_Identity_t drb_id = 0;
//LTE_DRB_Identity_t* pdrb_id = NULL;
for (i=0; i<pmch_InfoList_r9_pP->list.count; i++) {
mbms_SessionInfoList_r9_p = &(pmch_InfoList_r9_pP->list.array[i]->mbms_SessionInfoList_r9);
for (j=0; j<mbms_SessionInfoList_r9_p->list.count; j++) {
MBMS_SessionInfo_p = mbms_SessionInfoList_r9_p->list.array[j];
if (0/*MBMS_SessionInfo_p->sessionId_r9*/)
mbms_session_id = MBMS_SessionInfo_p->sessionId_r9->buf[0];
else
mbms_session_id = MBMS_SessionInfo_p->logicalChannelIdentity_r9;
lc_id = mbms_session_id;
mbms_service_id = MBMS_SessionInfo_p->tmgi_r9.serviceId_r9.buf[2]; //serviceId is 3-octet string
// mbms_service_id = j;
#if 0
/* TODO: check if this code should stay there
* as it is both enb and ue cases do the same thing
*/
// can set the mch_id = i
if (ctxt_pP->enb_flag) {
drb_id = (mbms_service_id * LTE_maxSessionPerPMCH ) + mbms_session_id;//+ (LTE_maxDRB + 3) * MAX_MOBILES_PER_ENB; // 1
} else {
drb_id = (mbms_service_id * LTE_maxSessionPerPMCH ) + mbms_session_id; // + (LTE_maxDRB + 3); // 15
}
#endif
drb_id = (mbms_service_id * LTE_maxSessionPerPMCH ) + mbms_session_id;
LOG_I(RLC, PROTOCOL_CTXT_FMT" CONFIG REQ MBMS ASN1 LC ID %u RB ID %u SESSION ID %u SERVICE ID %u, mbms_rnti %x\n",
PROTOCOL_CTXT_ARGS(ctxt_pP),
lc_id,
(int)drb_id,
mbms_session_id,
mbms_service_id,
mbms_rnti
);
rlc_entity_t *rlc_um;
rlc_ue_t *ue;
//drb_id = rb_id;
rlc_manager_lock(rlc_ue_manager);
ue = rlc_manager_get_ue(rlc_ue_manager, mbms_rnti);
if (ue->drb[drb_id-1] != NULL) {
LOG_D(RLC, "%s:%d:%s: warning DRB %d already exist for ue %d, do nothing\n",
__FILE__, __LINE__, __FUNCTION__, (int)drb_id, mbms_rnti);
} else {
rlc_um = new_rlc_entity_um(1000000,
1000000,
deliver_sdu, ue,
0,//LTE_T_Reordering_ms0,//t_reordering,
5//LTE_SN_FieldLength_size5//sn_field_length
);
rlc_ue_add_drb_rlc_entity(ue, drb_id, rlc_um);
LOG_D(RLC, "%s:%d:%s: added DRB %d to UE RNTI %x\n", __FILE__, __LINE__, __FUNCTION__, (int)drb_id, mbms_rnti);
}
rlc_manager_unlock(rlc_ue_manager);
}
}
}
if (drb2release_listP != NULL) {
LOG_E(RLC, "%s:%d:%s: TODO\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
if (srb2add_listP != NULL) {
for (i = 0; i < srb2add_listP->list.count; i++) {
add_srb(rnti, module_id, srb2add_listP->list.array[i]);
}
}
if (drb2add_listP != NULL) {
for (i = 0; i < drb2add_listP->list.count; i++) {
add_drb(rnti, module_id, drb2add_listP->list.array[i]);
}
}
return RLC_OP_STATUS_OK;
}
rlc_op_status_t rrc_rlc_config_req (
const protocol_ctxt_t* const ctxt_pP,
const srb_flag_t srb_flagP,
const MBMS_flag_t mbms_flagP,
const config_action_t actionP,
const rb_id_t rb_idP,
const rlc_info_t rlc_infoP)
{
rlc_ue_t *ue;
int i;
if (mbms_flagP) {
LOG_E(RLC, "%s:%d:%s: todo (mbms not supported)\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
if (actionP != CONFIG_ACTION_REMOVE) {
LOG_E(RLC, "%s:%d:%s: todo (only CONFIG_ACTION_REMOVE supported)\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
if (ctxt_pP->module_id) {
LOG_E(RLC, "%s:%d:%s: todo (only module_id 0 supported)\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
if ((srb_flagP && !(rb_idP >= 1 && rb_idP <= 2)) ||
(!srb_flagP && !(rb_idP >= 1 && rb_idP <= 5))) {
LOG_E(RLC, "%s:%d:%s: bad rb_id (%d) (is_srb %d)\n", __FILE__, __LINE__, __FUNCTION__, (int)rb_idP, srb_flagP);
exit(1);
}
rlc_manager_lock(rlc_ue_manager);
LOG_D(RLC, "%s:%d:%s: remove rb %d (is_srb %d) for UE %d\n", __FILE__, __LINE__, __FUNCTION__, (int)rb_idP, srb_flagP, ctxt_pP->rnti);
ue = rlc_manager_get_ue(rlc_ue_manager, ctxt_pP->rnti);
if (srb_flagP) {
if (ue->srb[rb_idP-1] != NULL) {
ue->srb[rb_idP-1]->delete(ue->srb[rb_idP-1]);
ue->srb[rb_idP-1] = NULL;
} else
LOG_W(RLC, "removing non allocated SRB %d, do nothing\n", (int)rb_idP);
} else {
if (ue->drb[rb_idP-1] != NULL) {
ue->drb[rb_idP-1]->delete(ue->drb[rb_idP-1]);
ue->drb[rb_idP-1] = NULL;
} else
LOG_W(RLC, "removing non allocated DRB %d, do nothing\n", (int)rb_idP);
}
/* remove UE if it has no more RB configured */
for (i = 0; i < 2; i++)
if (ue->srb[i] != NULL)
break;
if (i == 2) {
for (i = 0; i < 5; i++)
if (ue->drb[i] != NULL)
break;
if (i == 5)
rlc_manager_remove_ue(rlc_ue_manager, ctxt_pP->rnti);
}
rlc_manager_unlock(rlc_ue_manager);
return RLC_OP_STATUS_OK;
}
void rrc_rlc_register_rrc (rrc_data_ind_cb_t rrc_data_indP, rrc_data_conf_cb_t rrc_data_confP)
{
/* nothing to do */
}
rlc_op_status_t rrc_rlc_remove_ue (const protocol_ctxt_t* const x)
{
LOG_D(RLC, "%s:%d:%s: remove UE %d\n", __FILE__, __LINE__, __FUNCTION__, x->rnti);
rlc_manager_lock(rlc_ue_manager);
rlc_manager_remove_ue(rlc_ue_manager, x->rnti);
rlc_manager_unlock(rlc_ue_manager);
return RLC_OP_STATUS_OK;
}
void rlc_tick(int frame, int subframe)
{
int expected_next_frame;
int expected_next_subframe;
if (frame != rlc_current_time_last_frame ||
subframe != rlc_current_time_last_subframe) {
/* warn if discontinuity in ticks */
expected_next_subframe = (rlc_current_time_last_subframe + 1) % 10;
if (expected_next_subframe == 0)
expected_next_frame = (rlc_current_time_last_frame + 1) % 1024;
else
expected_next_frame = rlc_current_time_last_frame;
if (expected_next_frame != frame || expected_next_subframe != subframe)
LOG_W(RLC, "rlc_tick: discontinuity (expected %d.%d, got %d.%d)\n",
expected_next_frame, expected_next_subframe,
frame, subframe);
rlc_current_time++;
rlc_current_time_last_frame = frame;
rlc_current_time_last_subframe = subframe;
}
}
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