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openairinterface5g/openair2/LAYER2/RLC/rlc_mac.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
*/
/*
rlc_mac.c
-------------------
AUTHOR : Lionel GAUTHIER
COMPANY : EURECOM
EMAIL : Lionel.Gauthier@eurecom.fr
*/
//-----------------------------------------------------------------------------
#define RLC_MAC_C
#include "rlc.h"
#include "LAYER2/MAC/extern.h"
#include "UTIL/LOG/log.h"
#include "UTIL/OCG/OCG_vars.h"
#include "hashtable.h"
#include "assertions.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
//#define DEBUG_MAC_INTERFACE 1
//-----------------------------------------------------------------------------
struct mac_data_ind mac_rlc_deserialize_tb (
char *buffer_pP,
const tb_size_t tb_sizeP,
num_tb_t num_tbP,
crc_t *crcs_pP)
{
//-----------------------------------------------------------------------------
struct mac_data_ind data_ind;
mem_block_t* tb_p;
num_tb_t nb_tb_read;
tbs_size_t tbs_size;
nb_tb_read = 0;
tbs_size = 0;
list_init(&data_ind.data, NULL);
while (num_tbP > 0) {
tb_p = get_free_mem_block(sizeof (mac_rlc_max_rx_header_size_t) + tb_sizeP, __func__);
if (tb_p != NULL) {
((struct mac_tb_ind *) (tb_p->data))->first_bit = 0;
((struct mac_tb_ind *) (tb_p->data))->data_ptr = (uint8_t*)&tb_p->data[sizeof (mac_rlc_max_rx_header_size_t)];
((struct mac_tb_ind *) (tb_p->data))->size = tb_sizeP;
if (crcs_pP) {
((struct mac_tb_ind *) (tb_p->data))->error_indication = crcs_pP[nb_tb_read];
} else {
((struct mac_tb_ind *) (tb_p->data))->error_indication = 0;
}
memcpy(((struct mac_tb_ind *) (tb_p->data))->data_ptr, &buffer_pP[tbs_size], tb_sizeP);
#ifdef DEBUG_MAC_INTERFACE
LOG_T(RLC, "[MAC-RLC] DUMP RX PDU(%d bytes):\n", tb_sizeP);
rlc_util_print_hex_octets(RLC, ((struct mac_tb_ind *) (tb_p->data))->data_ptr, tb_sizeP);
#endif
nb_tb_read = nb_tb_read + 1;
tbs_size = tbs_size + tb_sizeP;
list_add_tail_eurecom(tb_p, &data_ind.data);
}
num_tbP = num_tbP - 1;
}
data_ind.no_tb = nb_tb_read;
data_ind.tb_size = tb_sizeP << 3;
return data_ind;
}
//-----------------------------------------------------------------------------
tbs_size_t mac_rlc_serialize_tb (char* buffer_pP, list_t transport_blocksP)
{
//-----------------------------------------------------------------------------
mem_block_t *tb_p;
tbs_size_t tbs_size;
tbs_size_t tb_size;
tbs_size = 0;
while (transport_blocksP.nb_elements > 0) {
tb_p = list_remove_head (&transport_blocksP);
if (tb_p != NULL) {
tb_size = ((struct mac_tb_req *) (tb_p->data))->tb_size;
#ifdef DEBUG_MAC_INTERFACE
LOG_T(RLC, "[MAC-RLC] DUMP TX PDU(%d bytes):\n", tb_size);
rlc_util_print_hex_octets(RLC, ((struct mac_tb_req *) (tb_p->data))->data_ptr, tb_size);
#endif
memcpy(&buffer_pP[tbs_size], &((struct mac_tb_req *) (tb_p->data))->data_ptr[0], tb_size);
tbs_size = tbs_size + tb_size;
free_mem_block(tb_p, __func__);
}
}
return tbs_size;
}
//-----------------------------------------------------------------------------
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)
{
//-----------------------------------------------------------------------------
struct mac_data_req data_request;
rlc_mode_t rlc_mode = RLC_MODE_NONE;
rlc_mbms_id_t *mbms_id_p = NULL;
rlc_union_t *rlc_union_p = NULL;
hash_key_t key = HASHTABLE_NOT_A_KEY_VALUE;
hashtable_rc_t h_rc;
srb_flag_t srb_flag = (channel_idP <= 2) ? SRB_FLAG_YES : SRB_FLAG_NO;
tbs_size_t ret_tb_size = 0;
protocol_ctxt_t ctxt;
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, enb_flagP, rntiP, frameP, 0,eNB_index);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_MAC_RLC_DATA_REQ,VCD_FUNCTION_IN);
#ifdef DEBUG_MAC_INTERFACE
LOG_D(RLC, PROTOCOL_CTXT_FMT" MAC_RLC_DATA_REQ channel %d (%d) MAX RB %d, Num_tb %d\n",
PROTOCOL_CTXT_ARGS((&ctxt)),
channel_idP,
RLC_MAX_LC,
NB_RB_MAX);
#endif // DEBUG_MAC_INTERFACE
if (MBMS_flagP) {
AssertFatal (channel_idP < RLC_MAX_MBMS_LC, "channel id is too high (%u/%d)!\n", channel_idP, RLC_MAX_MBMS_LC);
} else {
AssertFatal (channel_idP < NB_RB_MAX, "channel id is too high (%u/%d)!\n", channel_idP, NB_RB_MAX);
}
if (MBMS_flagP) {
if (enb_flagP) {
mbms_id_p = &rlc_mbms_lcid2service_session_id_eNB[module_idP][channel_idP];
key = RLC_COLL_KEY_MBMS_VALUE(module_idP, rntiP, enb_flagP, mbms_id_p->service_id, mbms_id_p->session_id);
} else {
return (tbs_size_t)0;
}
} else {
key = RLC_COLL_KEY_LCID_VALUE(module_idP, rntiP, enb_flagP, channel_idP, srb_flag);
}
h_rc = hashtable_get(rlc_coll_p, key, (void**)&rlc_union_p);
if (h_rc == HASH_TABLE_OK) {
rlc_mode = rlc_union_p->mode;
} else {
rlc_mode = RLC_MODE_NONE;
AssertFatal (0 , "RLC not configured lcid %u RNTI %x!\n", channel_idP, rntiP);
}
switch (rlc_mode) {
case RLC_MODE_NONE:
ret_tb_size =0;
break;
case RLC_MODE_AM:
if (!enb_flagP) rlc_am_set_nb_bytes_requested_by_mac(&rlc_union_p->rlc.am,tb_sizeP);
data_request = rlc_am_mac_data_request(&ctxt, &rlc_union_p->rlc.am,enb_flagP);
ret_tb_size =mac_rlc_serialize_tb(buffer_pP, data_request.data);
break;
case RLC_MODE_UM:
if (!enb_flagP) rlc_um_set_nb_bytes_requested_by_mac(&rlc_union_p->rlc.um,tb_sizeP);
data_request = rlc_um_mac_data_request(&ctxt, &rlc_union_p->rlc.um,enb_flagP);
ret_tb_size = mac_rlc_serialize_tb(buffer_pP, data_request.data);
break;
case RLC_MODE_TM:
data_request = rlc_tm_mac_data_request(&ctxt, &rlc_union_p->rlc.tm);
ret_tb_size = mac_rlc_serialize_tb(buffer_pP, data_request.data);
break;
default:
;
}
#if T_TRACER
if (enb_flagP)
T(T_ENB_RLC_MAC_DL, T_INT(module_idP), T_INT(rntiP), T_INT(channel_idP), T_INT(ret_tb_size));
#endif
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_MAC_RLC_DATA_REQ,VCD_FUNCTION_OUT);
return ret_tb_size;
}
//-----------------------------------------------------------------------------
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_mode_t rlc_mode = RLC_MODE_NONE;
rlc_mbms_id_t *mbms_id_p = NULL;
rlc_union_t *rlc_union_p = NULL;
hash_key_t key = HASHTABLE_NOT_A_KEY_VALUE;
hashtable_rc_t h_rc;
srb_flag_t srb_flag = (channel_idP <= 2) ? SRB_FLAG_YES : SRB_FLAG_NO;
protocol_ctxt_t ctxt;
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, enb_flagP, rntiP, frameP, 0, eNB_index);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_MAC_RLC_DATA_IND,VCD_FUNCTION_IN);
#ifdef DEBUG_MAC_INTERFACE
if (num_tbP) {
LOG_D(RLC, PROTOCOL_CTXT_FMT" MAC_RLC_DATA_IND on channel %d (%d), rb max %d, Num_tb %d\n",
PROTOCOL_CTXT_ARGS(&ctxt),
channel_idP,
RLC_MAX_LC,
NB_RB_MAX,
num_tbP);
}
#endif // DEBUG_MAC_INTERFACE
#if T_TRACER
if (enb_flagP)
T(T_ENB_RLC_MAC_UL, T_INT(module_idP), T_INT(rntiP), T_INT(channel_idP), T_INT(tb_sizeP));
#endif
if (MBMS_flagP) {
if (BOOL_NOT(enb_flagP)) {
mbms_id_p = &rlc_mbms_lcid2service_session_id_ue[module_idP][channel_idP];
key = RLC_COLL_KEY_MBMS_VALUE(module_idP, rntiP, enb_flagP, mbms_id_p->service_id, mbms_id_p->session_id);
} else {
return;
}
} else {
key = RLC_COLL_KEY_LCID_VALUE(module_idP, rntiP, enb_flagP, channel_idP, srb_flag);
}
h_rc = hashtable_get(rlc_coll_p, key, (void**)&rlc_union_p);
if (h_rc == HASH_TABLE_OK) {
rlc_mode = rlc_union_p->mode;
} else {
rlc_mode = RLC_MODE_NONE;
//AssertFatal (0 , "%s RLC not configured rb id %u lcid %u module %u!\n", __FUNCTION__, rb_id, channel_idP, ue_module_idP);
}
struct mac_data_ind data_ind = mac_rlc_deserialize_tb(buffer_pP, tb_sizeP, num_tbP, crcs_pP);
switch (rlc_mode) {
case RLC_MODE_NONE:
//handle_event(WARNING,"FILE %s FONCTION mac_rlc_data_ind() LINE %s : no radio bearer configured :%d\n", __FILE__, __LINE__, channel_idP);
break;
case RLC_MODE_AM:
rlc_am_mac_data_indication(&ctxt, &rlc_union_p->rlc.am, data_ind);
break;
case RLC_MODE_UM:
rlc_um_mac_data_indication(&ctxt, &rlc_union_p->rlc.um, data_ind);
break;
case RLC_MODE_TM:
rlc_tm_mac_data_indication(&ctxt, &rlc_union_p->rlc.tm, data_ind);
break;
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_MAC_RLC_DATA_IND,VCD_FUNCTION_OUT);
}
//-----------------------------------------------------------------------------
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 tb_size_t tb_sizeP)
{
//-----------------------------------------------------------------------------
mac_rlc_status_resp_t mac_rlc_status_resp;
struct mac_status_ind tx_status;
struct mac_status_resp status_resp;
rlc_mode_t rlc_mode = RLC_MODE_NONE;
rlc_mbms_id_t *mbms_id_p = NULL;
rlc_union_t *rlc_union_p = NULL;
hash_key_t key = HASHTABLE_NOT_A_KEY_VALUE;
hashtable_rc_t h_rc;
srb_flag_t srb_flag = (channel_idP <= 2) ? SRB_FLAG_YES : SRB_FLAG_NO;
protocol_ctxt_t ctxt;
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, enb_flagP, rntiP, frameP, subframeP, eNB_index);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_MAC_RLC_STATUS_IND,VCD_FUNCTION_IN);
memset (&mac_rlc_status_resp, 0, sizeof(mac_rlc_status_resp_t));
memset (&tx_status , 0, sizeof(struct mac_status_ind));
if (MBMS_flagP) {
if (enb_flagP) {
mbms_id_p = &rlc_mbms_lcid2service_session_id_eNB[module_idP][channel_idP];
} else {
mbms_id_p = &rlc_mbms_lcid2service_session_id_ue[module_idP][channel_idP];
}
key = RLC_COLL_KEY_MBMS_VALUE(module_idP, rntiP, enb_flagP, mbms_id_p->service_id, mbms_id_p->session_id);
} else {
key = RLC_COLL_KEY_LCID_VALUE(module_idP, rntiP, enb_flagP, channel_idP, srb_flag);
}
h_rc = hashtable_get(rlc_coll_p, key, (void**)&rlc_union_p);
if (h_rc == HASH_TABLE_OK) {
rlc_mode = rlc_union_p->mode;
} else {
rlc_mode = RLC_MODE_NONE;
//LOG_W(RLC , "[%s] RLC not configured rb id %u lcid %u module %u!\n", __FUNCTION__, rb_id, channel_idP, ue_module_idP);
//LOG_D(RLC , "[%s] RLC not configured rb id %u lcid %u module %u!\n", __FUNCTION__, rb_id, channel_idP, ue_module_idP);
}
switch (rlc_mode) {
case RLC_MODE_NONE:
//handle_event(WARNING,"FILE %s FONCTION mac_rlc_data_ind() LINE %s : no radio bearer configured :%d\n", __FILE__, __LINE__, channel_idP);
mac_rlc_status_resp.bytes_in_buffer = 0;
break;
case RLC_MODE_AM:
status_resp = rlc_am_mac_status_indication(&ctxt, &rlc_union_p->rlc.am, tb_sizeP, tx_status,enb_flagP);
mac_rlc_status_resp.bytes_in_buffer = status_resp.buffer_occupancy_in_bytes;
mac_rlc_status_resp.head_sdu_creation_time = status_resp.head_sdu_creation_time;
mac_rlc_status_resp.head_sdu_remaining_size_to_send = status_resp.head_sdu_remaining_size_to_send;
mac_rlc_status_resp.head_sdu_is_segmented = status_resp.head_sdu_is_segmented;
mac_rlc_status_resp.rrc_mui = status_resp.rrc_mui;
//return mac_rlc_status_resp;
break;
case RLC_MODE_UM:
status_resp = rlc_um_mac_status_indication(&ctxt, &rlc_union_p->rlc.um, tb_sizeP, tx_status, enb_flagP);
mac_rlc_status_resp.bytes_in_buffer = status_resp.buffer_occupancy_in_bytes;
mac_rlc_status_resp.pdus_in_buffer = status_resp.buffer_occupancy_in_pdus;
mac_rlc_status_resp.head_sdu_creation_time = status_resp.head_sdu_creation_time;
mac_rlc_status_resp.head_sdu_remaining_size_to_send = status_resp.head_sdu_remaining_size_to_send;
mac_rlc_status_resp.head_sdu_is_segmented = status_resp.head_sdu_is_segmented;
// return mac_rlc_status_resp;
break;
case RLC_MODE_TM:
status_resp = rlc_tm_mac_status_indication(&ctxt, &rlc_union_p->rlc.tm, tb_sizeP, tx_status);
mac_rlc_status_resp.bytes_in_buffer = status_resp.buffer_occupancy_in_bytes;
mac_rlc_status_resp.pdus_in_buffer = status_resp.buffer_occupancy_in_pdus;
// return mac_rlc_status_resp;
break;
default:
mac_rlc_status_resp.bytes_in_buffer = 0 ;
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_MAC_RLC_STATUS_IND,VCD_FUNCTION_OUT);
return mac_rlc_status_resp;
}
//-----------------------------------------------------------------------------
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_buffer_occupancy_t mac_rlc_buffer_occupancy_resp = 0;
rlc_mode_t rlc_mode = RLC_MODE_NONE;
rlc_union_t *rlc_union_p = NULL;
hash_key_t key = HASHTABLE_NOT_A_KEY_VALUE;
hashtable_rc_t h_rc;
srb_flag_t srb_flag = (channel_idP <= 2) ? SRB_FLAG_YES : SRB_FLAG_NO;
protocol_ctxt_t ctxt;
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, enb_flagP, rntiP, frameP, 0, eNB_index);
//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_MAC_RLC_GET_BUFFER_OCCUPANCY_IND,VCD_FUNCTION_IN);
/* Assumptions : for UE only */
/* At each TTI, Buffer Occupancy is first computed in mac_rlc_status_ind called by MAC ue_scheduler() function */
/* Then this function is called during MAC multiplexing ue_get_sdu(), and it may be call several times for the same bearer if it is in AM mode and there are several PDU types to transmit */
AssertFatal(enb_flagP == FALSE,"RLC Tx mac_rlc_get_buffer_occupancy_ind function is not implemented for eNB LcId=%d\n", channel_idP);
key = RLC_COLL_KEY_LCID_VALUE(module_idP, rntiP, enb_flagP, channel_idP, srb_flag);
h_rc = hashtable_get(rlc_coll_p, key, (void**)&rlc_union_p);
if (h_rc == HASH_TABLE_OK) {
rlc_mode = rlc_union_p->mode;
} else {
rlc_mode = RLC_MODE_NONE;
//LOG_W(RLC , "[%s] RLC not configured rb id %u lcid %u module %u!\n", __FUNCTION__, rb_id, channel_idP, ue_module_idP);
//LOG_D(RLC , "[%s] RLC not configured rb id %u lcid %u module %u!\n", __FUNCTION__, rb_id, channel_idP, ue_module_idP);
}
switch (rlc_mode) {
case RLC_MODE_AM:
mac_rlc_buffer_occupancy_resp = rlc_am_get_buffer_occupancy_in_bytes(&ctxt, &rlc_union_p->rlc.am);
break;
case RLC_MODE_UM:
mac_rlc_buffer_occupancy_resp = rlc_um_get_buffer_occupancy(&rlc_union_p->rlc.um);
break;
default:
mac_rlc_buffer_occupancy_resp = 0 ;
}
//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_MAC_RLC_GET_BUFFER_OCCUPANCY_IND,VCD_FUNCTION_OUT);
return mac_rlc_buffer_occupancy_resp;
}
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