maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
0cdb95add1dfd1c02f367c54067f2a7b7cf53521
openairinterface5g/openair2/LAYER2/RLC/TM/rlc_tm_segment.c
T
Lionel Gauthier 862dbaa2fb Licence 
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5156 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2014-03-14 09:42:31 +00:00

181 lines
8.4 KiB
C
Executable File
Raw Blame History

/*******************************************************************************
Eurecom OpenAirInterface 2
Copyright(c) 1999 - 2014 Eurecom
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.
This program is distributed in the hope it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
The full GNU General Public License is included in this distribution in
the file called "COPYING".
Contact Information
Openair Admin: openair_admin@eurecom.fr
Openair Tech : openair_tech@eurecom.fr
Forums : http://forums.eurecom.fsr/openairinterface
Address : EURECOM,
Campus SophiaTech,
450 Route des Chappes,
CS 50193
06904 Biot Sophia Antipolis cedex,
FRANCE
*******************************************************************************/
/***************************************************************************
rlc_tm_segment.c -
-------------------
AUTHOR : Lionel GAUTHIER
COMPANY : EURECOM
EMAIL : Lionel.Gauthier@eurecom.fr
***************************************************************************/
//#include "rtos_header.h"
#include "platform_types.h"
//-----------------------------------------------------------------------------
#include "list.h"
#include "rlc_tm_entity.h"
#include "rlc_tm_structs.h"
#include "rlc_primitives.h"
#include "mem_block.h"
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
void
rlc_tm_no_segment (struct rlc_tm_entity *rlcP)
{
//-----------------------------------------------------------------------------
mem_block_t *pdu;
struct rlc_tm_tx_sdu_management *sdu_mngt;
struct rlc_tm_tx_pdu_management *pdu_mngt;
int discard_go_on;
int nb_pdu_to_transmit;
nb_pdu_to_transmit = rlcP->nb_pdu_requested_by_mac;
pdu = NULL;
if ((rlcP->sdu_discard_mode & RLC_SDU_DISCARD_TIMER_BASED_NO_EXPLICIT)) {
discard_go_on = 1;
while ((rlcP->input_sdus[rlcP->current_sdu_index]) && discard_go_on) {
if ((*rlcP->frame_tick_milliseconds - ((struct rlc_tm_tx_sdu_management *) (rlcP->input_sdus[rlcP->current_sdu_index]->data))->sdu_creation_time) >= rlcP->timer_discard_init) {
#ifdef DEBUG_RLC_TM_DISCARD_SDU
msg("[RLC_TM %p] SDU DISCARDED TIMED OUT %ld ms ", rlcP, (*rlcP->frame_tick_milliseconds - ((struct rlc_tm_tx_sdu_management *) (rlcP->input_sdus[rlcP->current_sdu_index]->data))->sdu_creation_time));
msg("BO %d, NB SDU %d\n", rlcP->buffer_occupancy, rlcP->nb_sdu);
#endif
rlcP->buffer_occupancy -= (((struct rlc_tm_tx_sdu_management *) (rlcP->input_sdus[rlcP->current_sdu_index]->data))->sdu_size >> 3);
rlcP->nb_sdu -= 1;
free_mem_block (rlcP->input_sdus[rlcP->current_sdu_index]);
rlcP->input_sdus[rlcP->current_sdu_index] = NULL;
rlcP->current_sdu_index = (rlcP->current_sdu_index + 1) % rlcP->size_input_sdus_buffer;
} else {
discard_go_on = 0;
}
}
}
// only one SDU per TTI
while ((rlcP->input_sdus[rlcP->current_sdu_index]) && (nb_pdu_to_transmit > 0)) {
sdu_mngt = ((struct rlc_tm_tx_sdu_management *) (rlcP->input_sdus[rlcP->current_sdu_index]->data));
//PRINT_RLC_TM_SEGMENT("[RLC_TM %p] SEGMENT GET NEW SDU %p AVAILABLE SIZE %d Bytes\n", rlcP, sdu_mngt, sdu_mngt->sdu_remaining_size);
if (!(pdu = get_free_mem_block (((rlcP->rlc_pdu_size + 7) >> 3) + sizeof (struct rlc_tm_tx_data_pdu_struct) + GUARD_CRC_LIH_SIZE))) {
msg ("[RLC_TM %p][SEGMENT] ERROR COULD NOT GET NEW PDU, EXIT\n", rlcP);
return;
}
// SHOULD BE OPTIMIZED...SOON
pdu_mngt = (struct rlc_tm_tx_pdu_management *) (pdu->data);
memset (pdu->data, 0, sizeof (struct rlc_tm_tx_pdu_management));
pdu_mngt->first_byte = (uint8_t*)&pdu->data[sizeof (struct rlc_tm_tx_data_pdu_struct)];
memcpy (pdu_mngt->first_byte, sdu_mngt->first_byte, ((rlcP->rlc_pdu_size + 7) >> 3));
((struct mac_tb_req *) (pdu->data))->rlc = NULL;
((struct mac_tb_req *) (pdu->data))->data_ptr = pdu_mngt->first_byte;
((struct mac_tb_req *) (pdu->data))->first_bit = 0;
((struct mac_tb_req *) (pdu->data))->tb_size_in_bits = rlcP->rlc_pdu_size;
list_add_tail_eurecom (pdu, &rlcP->pdus_to_mac_layer);
rlcP->buffer_occupancy -= (sdu_mngt->sdu_size >> 3);
free_mem_block (rlcP->input_sdus[rlcP->current_sdu_index]);
rlcP->input_sdus[rlcP->current_sdu_index] = NULL;
rlcP->current_sdu_index = (rlcP->current_sdu_index + 1) % rlcP->size_input_sdus_buffer;
rlcP->nb_sdu -= 1;
}
}
//-----------------------------------------------------------------------------
void
rlc_tm_segment (struct rlc_tm_entity *rlcP)
{
//-----------------------------------------------------------------------------
mem_block_t *pdu;
struct rlc_tm_tx_sdu_management *sdu_mngt;
struct rlc_tm_tx_pdu_management *pdu_mngt;
int discard_go_on;
int nb_pdu_to_transmit;
nb_pdu_to_transmit = rlcP->nb_pdu_requested_by_mac;
pdu = NULL;
if ((rlcP->sdu_discard_mode & RLC_SDU_DISCARD_TIMER_BASED_NO_EXPLICIT)) {
discard_go_on = 1;
while ((rlcP->input_sdus[rlcP->current_sdu_index]) && discard_go_on) {
if ((*rlcP->frame_tick_milliseconds - ((struct rlc_tm_tx_sdu_management *) (rlcP->input_sdus[rlcP->current_sdu_index]->data))->sdu_creation_time) >= rlcP->timer_discard_init) {
#ifdef DEBUG_RLC_TM_DISCARD_SDU
msg("[RLC_TM %p] SDU DISCARDED TIMED OUT %ld ms ", rlcP,(*rlcP->frame_tick_milliseconds - ((struct rlc_tm_tx_sdu_management *) (rlcP->input_sdus[rlcP->current_sdu_index]->data))->sdu_creation_time));
msg ("BO %d, NB SDU %d\n", rlcP->buffer_occupancy, rlcP->nb_sdu);
#endif
rlcP->nb_sdu -= 1;
free_mem_block (rlcP->input_sdus[rlcP->current_sdu_index]);
rlcP->input_sdus[rlcP->current_sdu_index] = NULL;
rlcP->current_sdu_index = (rlcP->current_sdu_index + 1) % rlcP->size_input_sdus_buffer;
} else {
discard_go_on = 0;
}
}
}
// only one SDU per TTI
if ((rlcP->input_sdus[rlcP->current_sdu_index])) {
sdu_mngt = (struct rlc_tm_tx_sdu_management *) (rlcP->input_sdus[rlcP->current_sdu_index]->data);
//PRINT_RLC_TM_SEGMENT("[RLC_TM %p] SEGMENT GET NEW SDU %p AVAILABLE SIZE %d Bytes\n", rlcP, sdu_mngt, sdu_mngt->sdu_remaining_size);
while ((nb_pdu_to_transmit > 0) && (sdu_mngt->sdu_segmented_size < sdu_mngt->sdu_size)) {
if (!(pdu = get_free_mem_block (((rlcP->rlc_pdu_size + 7) >> 3) + 1 + sizeof (struct rlc_tm_tx_data_pdu_struct) + GUARD_CRC_LIH_SIZE))) {
msg ("[RLC_TM %p][SEGMENT] ERROR COULD NOT GET NEW PDU, EXIT\n", rlcP);
return;
}
// SHOULD BE OPTIMIZED...SOON
pdu_mngt = (struct rlc_tm_tx_pdu_management *) (pdu->data);
memset (pdu->data, 0, sizeof (struct rlc_tm_tx_pdu_management));
pdu_mngt->first_byte = (uint8_t*)&pdu->data[sizeof (struct rlc_tm_tx_data_pdu_struct)];
memcpy (pdu_mngt->first_byte, &sdu_mngt->first_byte[sdu_mngt->sdu_segmented_size >> 3], ((rlcP->rlc_pdu_size + 7) >> 3));
((struct mac_tb_req *) (pdu->data))->rlc = NULL;
((struct mac_tb_req *) (pdu->data))->data_ptr = pdu_mngt->first_byte;
((struct mac_tb_req *) (pdu->data))->first_bit = sdu_mngt->sdu_segmented_size & 0x07;
((struct mac_tb_req *) (pdu->data))->tb_size_in_bits = rlcP->rlc_pdu_size;
list_add_tail_eurecom (pdu, &rlcP->pdus_to_mac_layer);
sdu_mngt->sdu_segmented_size += rlcP->rlc_pdu_size;
nb_pdu_to_transmit -= 1;
}
free_mem_block (rlcP->input_sdus[rlcP->current_sdu_index]);
rlcP->input_sdus[rlcP->current_sdu_index] = NULL;
rlcP->current_sdu_index = (rlcP->current_sdu_index + 1) % rlcP->size_input_sdus_buffer;
rlcP->nb_sdu -= 1;
}
if ((rlcP->input_sdus[rlcP->current_sdu_index])) {
rlcP->buffer_occupancy = ((struct rlc_tm_tx_sdu_management *) (rlcP->input_sdus[rlcP->current_sdu_index]->data))->sdu_size >> 3;
} else {
rlcP->buffer_occupancy = 0;
}
}
Reference in New Issue View Git Blame Copy Permalink