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openairinterface5g/openair2/LAYER2/PDCP_v10.1.0/pdcp.c
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/*******************************************************************************
Eurecom OpenAirInterface
Copyright(c) 1999 - 2011 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, 2229, route des crêtes, 06560 Valbonne Sophia Antipolis, France
*******************************************************************************/
/*! \file pdcp.c
* \brief pdcp interface with RLC
* \author Lionel GAUTHIER and Navid Nikaein
* \date 2009-2012
* \version 1.0
*/
#define PDCP_C
#ifndef USER_MODE
#include <rtai_fifos.h>
#endif
#include "pdcp.h"
#include "pdcp_util.h"
#include "pdcp_sequence_manager.h"
#include "LAYER2/RLC/rlc.h"
#include "LAYER2/MAC/extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "pdcp_primitives.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "UTIL/LOG/log.h"
#include <inttypes.h>
#include "platform_constants.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#define PDCP_DATA_REQ_DEBUG 0
#define PDCP_DATA_IND_DEBUG 0
#ifndef OAI_EMU
extern int otg_enabled;
#endif
extern rlc_op_status_t rlc_data_req(module_id_t, u32_t, u8_t, u8_t,rb_id_t, mui_t, confirm_t, sdu_size_t, mem_block_t*);
extern void rrc_lite_data_ind( u8 Mod_id, u32 frame, u8 eNB_flag, u32 Rb_id, u32 sdu_size,u8 *Buffer);
//Added MW - RRC L2 interface
extern void pdcp_rrc_data_ind( u8 Mod_id, u32 frame, u8 eNB_flag, unsigned int Srb_id, unsigned int Sdu_size,u8 *Buffer);
//extern char *packet_gen(int src, int dst, int ctime, int *pkt_size);
extern int otg_rx_pkt( int src, int dst, int ctime, char *buffer_tx, unsigned int size);
//-----------------------------------------------------------------------------
/*
* If PDCP_UNIT_TEST is set here then data flow between PDCP and RLC is broken
* and PDCP has no longer anything to do with RLC. In this case, after it's handed
* an SDU it appends PDCP header and returns (by filling in incoming pointer parameters)
* this mem_block_t to be dissected for testing purposes. For further details see test
* code at targets/TEST/PDCP/test_pdcp.c:test_pdcp_data_req()
*/
#ifdef PDCP_UNIT_TEST
BOOL pdcp_data_req(module_id_t module_id, u32_t frame, u8_t eNB_flag, rb_id_t rb_id, sdu_size_t sdu_buffer_size, \
unsigned char* sdu_buffer, pdcp_t* test_pdcp_entity, list_t* test_list)
#else
BOOL pdcp_data_req(module_id_t module_id, u32_t frame, u8_t eNB_flag, rb_id_t rb_id, u32 muiP, u32 confirmP, \
sdu_size_t sdu_buffer_size, unsigned char* sdu_buffer, u8 mode)
#endif
{
//-----------------------------------------------------------------------------
#ifdef PDCP_UNIT_TEST
pdcp_t* pdcp = test_pdcp_entity;
#else
pdcp_t* pdcp = &pdcp_array[module_id][rb_id];
#endif
u8 i;
u8 pdcp_header_len=0, pdcp_tailer_len=0;
u16 pdcp_pdu_size=0, current_sn;
mem_block_t* pdcp_pdu = NULL;
rlc_op_status_t rlc_status;
if ((pdcp->instanciated_instance == 0) && (mode != PDCP_TM)) {
LOG_W(PDCP, "Instance is not configured, Ignoring SDU...\n");
return FALSE;
}
if (sdu_buffer_size == 0) {
LOG_W(PDCP, "Handed SDU is of size 0! Ignoring...\n");
return FALSE;
}
/*
* XXX MAX_IP_PACKET_SIZE is 4096, shouldn't this be MAX SDU size, which is 8188 bytes?
*/
if (sdu_buffer_size > MAX_IP_PACKET_SIZE) {
LOG_E(PDCP, "Requested SDU size (%d) is bigger than that can be handled by PDCP (%u)!\n",
sdu_buffer_size, MAX_IP_PACKET_SIZE);
// XXX What does following call do?
mac_xface->macphy_exit("");
}
// PDCP transparent mode for MBMS traffic
if (mode == PDCP_TM) {
LOG_D(PDCP, " [TM] Asking for a new mem_block of size %d\n",sdu_buffer_size);
pdcp_pdu = get_free_mem_block(sdu_buffer_size);
if (pdcp_pdu != NULL) {
memcpy(&pdcp_pdu->data[0], sdu_buffer, sdu_buffer_size);
rlc_status = rlc_data_req(module_id, frame, eNB_flag, RLC_MBMS_YES, rb_id, muiP, confirmP, sdu_buffer_size, pdcp_pdu);
} else
rlc_status = RLC_OP_STATUS_OUT_OF_RESSOURCES;
} else {
// calculate the pdcp header and trailer size
if ((rb_id % NB_RB_MAX) < DTCH) {
pdcp_header_len = PDCP_CONTROL_PLANE_DATA_PDU_SN_SIZE;
pdcp_tailer_len = PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE;
} else {
pdcp_header_len = PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
pdcp_tailer_len = 0;
}
pdcp_pdu_size= sdu_buffer_size + pdcp_header_len + pdcp_tailer_len;
LOG_I(PDCP, "Data request notification for PDCP entity with module ID %d and radio bearer ID %d pdu size %d (header%d, trailer%d)\n", module_id, rb_id,pdcp_pdu_size, pdcp_header_len,pdcp_tailer_len);
/*
* Allocate a new block for the new PDU (i.e. PDU header and SDU payload)
*/
LOG_D(PDCP, "Asking for a new mem_block of size %d\n", pdcp_pdu_size);
pdcp_pdu = get_free_mem_block(pdcp_pdu_size);
if (pdcp_pdu != NULL) {
/*
* Create a Data PDU with header and append data
*
* Place User Plane PDCP Data PDU header first
*/
if ((rb_id % NB_RB_MAX) < DTCH) { // this Control plane PDCP Data PDU
pdcp_control_plane_data_pdu_header pdu_header;
pdu_header.sn = pdcp_get_next_tx_seq_number(pdcp);
current_sn = pdu_header.sn;
memset(&pdu_header.mac_i[0],0,PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE);
if (pdcp_serialize_control_plane_data_pdu_with_SRB_sn_buffer((unsigned char*)pdcp_pdu->data, &pdu_header) == FALSE) {
LOG_E(PDCP, "Cannot fill PDU buffer with relevant header fields!\n");
return FALSE;
}
} else {
pdcp_user_plane_data_pdu_header_with_long_sn pdu_header;
pdu_header.dc = (mode == 1) ? PDCP_DATA_PDU : PDCP_CONTROL_PDU;
pdu_header.sn = pdcp_get_next_tx_seq_number(pdcp);
current_sn = pdu_header.sn ;
if (pdcp_serialize_user_plane_data_pdu_with_long_sn_buffer((unsigned char*)pdcp_pdu->data, &pdu_header) == FALSE) {
LOG_E(PDCP, "Cannot fill PDU buffer with relevant header fields!\n");
return FALSE;
}
}
/*
* Validate incoming sequence number, there might be a problem with PDCP initialization
*/
if (current_sn > pdcp_calculate_max_seq_num_for_given_size(pdcp->seq_num_size)) {
LOG_E(PDCP, "Generated sequence number (%lu) is greater than a sequence number could ever be!\n", current_sn);
LOG_E(PDCP, "There must be a problem with PDCP initialization, ignoring this PDU...\n");
free_mem_block(pdcp_pdu);
return FALSE;
}
LOG_D(PDCP, "Sequence number %d is assigned to current PDU\n", current_sn);
/* Then append data... */
memcpy(&pdcp_pdu->data[pdcp_header_len], sdu_buffer, sdu_buffer_size);
//For control plane data that are not integrity protected,
// the MAC-I field is still present and should be padded with padding bits set to 0.
for (i=0;i<pdcp_tailer_len;i++)
pdcp_pdu->data[pdcp_header_len + sdu_buffer_size + i] = 0x00;// pdu_header.mac_i[i];
/* Print octets of outgoing data in hexadecimal form */
LOG_D(PDCP, "Following content with size %d will be sent over RLC (PDCP PDU header is the first two bytes)\n",
pdcp_pdu_size);
util_print_hex_octets(PDCP, (unsigned char*)pdcp_pdu->data, pdcp_pdu_size);
//util_flush_hex_octets(PDCP, (unsigned char*)pdcp_pdu->data, pdcp_pdu_size);
} else {
LOG_E(PDCP, "Cannot create a mem_block for a PDU!\n");
return FALSE;
}
#ifdef PDCP_UNIT_TEST
/*
* Here we add PDU to the list and return to test code without
* handing it off to RLC
*/
list_add_tail_eurecom(pdcp_pdu, test_list);
return TRUE;
#else
/*
* Ask sublayer to transmit data and check return value
* to see if RLC succeeded
*/
rlc_status = rlc_data_req(module_id, frame, eNB_flag, 0, rb_id, muiP, confirmP, pdcp_pdu_size, pdcp_pdu);
}
switch (rlc_status) {
case RLC_OP_STATUS_OK:
LOG_D(PDCP, "Data sending request over RLC succeeded!\n");
break;
case RLC_OP_STATUS_BAD_PARAMETER:
LOG_W(PDCP, "Data sending request over RLC failed with 'Bad Parameter' reason!\n");
return FALSE;
case RLC_OP_STATUS_INTERNAL_ERROR:
LOG_W(PDCP, "Data sending request over RLC failed with 'Internal Error' reason!\n");
return FALSE;
case RLC_OP_STATUS_OUT_OF_RESSOURCES:
LOG_W(PDCP, "Data sending request over RLC failed with 'Out of Resources' reason!\n");
return FALSE;
default:
LOG_W(PDCP, "RLC returned an unknown status code after PDCP placed the order to send some data (Status Code:%d)\n", rlc_status);
return FALSE;
}
/*
* Control arrives here only if rlc_data_req() returns RLC_OP_STATUS_OK
* so we return TRUE afterwards
*/
/*
if (rb_id>=DTCH) {
if (eNB_flag == 1) {
Pdcp_stats_tx[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH]++;
Pdcp_stats_tx_bytes[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH] += sdu_buffer_size;
} else {
Pdcp_stats_tx[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH]++;
Pdcp_stats_tx_bytes[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH] += sdu_buffer_size;
}
}*/
return TRUE;
#endif // PDCP_UNIT_TEST
}
//-----------------------------------------------------------------------------
#ifdef PDCP_UNIT_TEST
BOOL pdcp_data_ind(module_id_t module_id, u32_t frame, u8_t eNB_flag, rb_id_t rb_id, sdu_size_t sdu_buffer_size, \
mem_block_t* sdu_buffer, pdcp_t* pdcp_test_entity, list_t* test_list)
#else
BOOL pdcp_data_ind(module_id_t module_id, u32_t frame, u8_t eNB_flag, u8_t MBMS_flagP, rb_id_t rb_id, sdu_size_t sdu_buffer_size, \
mem_block_t* sdu_buffer, u8 is_data_plane)
#endif
{
//-----------------------------------------------------------------------------
#ifdef PDCP_UNIT_TEST
pdcp_t* pdcp = pdcp_test_entity;
list_t* sdu_list = test_list;
#else
pdcp_t* pdcp = &pdcp_array[module_id][rb_id];
list_t* sdu_list = &pdcp_sdu_list;
#endif
mem_block_t *new_sdu = NULL;
int src_id, dst_id,ctime; // otg param
u8 pdcp_header_len=0, pdcp_tailer_len=0;
u16 sequence_number;
u8 payload_offset=0;
LOG_I(PDCP,"Data indication notification for PDCP entity with module ID %d and radio bearer ID %d rlc sdu size %d\n", module_id, rb_id, sdu_buffer_size);
if (sdu_buffer_size == 0) {
LOG_W(PDCP, "SDU buffer size is zero! Ignoring this chunk!");
return FALSE;
}
/*
* Check if incoming SDU is long enough to carry a PDU header
*/
if (MBMS_flagP == 0 ) {
if ((rb_id % NB_RB_MAX) < DTCH) {
pdcp_header_len = PDCP_CONTROL_PLANE_DATA_PDU_SN_SIZE;
pdcp_tailer_len = PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE;
} else {
pdcp_header_len = PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
pdcp_tailer_len = 0;
}
if (sdu_buffer_size < pdcp_header_len + pdcp_tailer_len ) {
LOG_W(PDCP, "Incoming (from RLC) SDU is short of size (size:%d)! Ignoring...\n", sdu_buffer_size);
#ifndef PDCP_UNIT_TEST
free_mem_block(sdu_buffer);
#endif
return FALSE;
}
/*
* Parse the PDU placed at the beginning of SDU to check
* if incoming SN is in line with RX window
*/
if (pdcp_header_len == PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE) { // DRB
sequence_number = pdcp_get_sequence_number_of_pdu_with_long_sn((unsigned char*)sdu_buffer->data);
// u8 dc = pdcp_get_dc_filed((unsigned char*)sdu_buffer->data);
} else { //SRB1/2
sequence_number = pdcp_get_sequence_number_of_pdu_with_SRB_sn((unsigned char*)sdu_buffer->data);
}
if (pdcp_is_rx_seq_number_valid(sequence_number, pdcp) == TRUE) {
LOG_D(PDCP, "Incoming PDU has a sequence number (%d) in accordance with RX window, yay!\n", sequence_number);
/* if (dc == PDCP_DATA_PDU )
LOG_D(PDCP, "Passing piggybacked SDU to NAS driver...\n");
else
LOG_D(PDCP, "Passing piggybacked SDU to RRC ...\n");*/
} else {
LOG_W(PDCP, "Incoming PDU has an unexpected sequence number (%d), RX window snychronisation have probably been lost!\n", sequence_number);
/*
* XXX Till we implement in-sequence delivery and duplicate discarding
* mechanism all out-of-order packets will be delivered to RRC/IP
*/
#if 0
LOG_D(PDCP, "Ignoring PDU...\n");
free_mem_block(sdu_buffer);
return FALSE;
#else
LOG_W(PDCP, "Delivering out-of-order SDU to upper layer...\n");
#endif
}
// SRB1/2: control-plane data
if ( (rb_id % NB_RB_MAX) < DTCH ){
/*new_sdu = get_free_mem_block(sdu_buffer_size - pdcp_header_len - pdcp_tailer_len);
if (new_sdu) {
memcpy(new_sdu->data,
&sdu_buffer->data[pdcp_header_len],
sdu_buffer_size - pdcp_header_len - pdcp_tailer_len);
rrc_lite_data_ind(module_id,
frame,
eNB_flag,
rb_id,
sdu_buffer_size - pdcp_header_len - pdcp_tailer_len,
new_sdu->data);
}*/
//rrc_lite_data_ind(module_id, //Modified MW - L2 Interface
pdcp_rrc_data_ind(module_id,
frame,
eNB_flag,
rb_id,
sdu_buffer_size - pdcp_header_len - pdcp_tailer_len,
(u8*)&sdu_buffer->data[pdcp_header_len]);
free_mem_block(sdu_buffer);
// free_mem_block(new_sdu);
return TRUE;
}
payload_offset=PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
} else {
payload_offset=0;
}
#if defined(USER_MODE) && defined(OAI_EMU)
if (oai_emulation.info.otg_enabled ==1 ){
src_id = 0;
dst_id = (eNB_flag == 1) ? module_id : module_id /*- NB_eNB_INST*/;
ctime = oai_emulation.info.time_ms; // avg current simulation time in ms : we may get the exact time through OCG?
LOG_D(OTG,"Check received buffer : enb_flag %d mod id %d, rab id %d (src %d, dst %d)\n", eNB_flag, module_id, rb_id, src_id, dst_id);
if (MBMS_flagP == 0) {
src_id = (eNB_flag == 1) ? (rb_id - DTCH) / NB_RB_MAX /*- NB_eNB_INST */ + 1 : ((rb_id - DTCH) / NB_RB_MAX);
}else {
#ifdef Rel10
src_id = (rb_id - MTCH - 3 - maxDRB) / maxSessionPerPMCH /*- NB_eNB_INST */ ;
//dst_id is now = module_id (supoosed to be 1 for UE), take the same as module from rlc_data_ind
// dst_id generated data from OTG is is 1 (session_id)
#endif
}
if (otg_rx_pkt(src_id, dst_id,ctime,&sdu_buffer->data[payload_offset],
sdu_buffer_size - payload_offset ) == 0 ) {
free_mem_block(sdu_buffer);
return TRUE;
}
}
#else
if (otg_enabled==1) {
LOG_D(OTG,"Discarding received packed\n");
free_mem_block(sdu_buffer);
return TRUE;
}
#endif
new_sdu = get_free_mem_block(sdu_buffer_size - payload_offset + sizeof (pdcp_data_ind_header_t));
if (new_sdu) {
/*
* Prepend PDCP indication header which is going to be removed at pdcp_fifo_flush_sdus()
*/
memset(new_sdu->data, 0, sizeof (pdcp_data_ind_header_t));
((pdcp_data_ind_header_t *) new_sdu->data)->rb_id = rb_id;
((pdcp_data_ind_header_t *) new_sdu->data)->data_size = sdu_buffer_size - payload_offset;
// Here there is no virtualization possible
#ifdef IDROMEL_NEMO
if (eNB_flag == 0)
((pdcp_data_ind_header_t *) new_sdu->data)->inst = rb_id/8;
else
((pdcp_data_ind_header_t *) new_sdu->data)->inst = 0;
#else
((pdcp_data_ind_header_t *) new_sdu->data)->inst = module_id;
#endif
// XXX Decompression would be done at this point
/*
* After checking incoming sequence number PDCP header
* has to be stripped off so here we copy SDU buffer starting
* from its second byte (skipping 0th and 1st octets, i.e.
* PDCP header)
*/
memcpy(&new_sdu->data[sizeof (pdcp_data_ind_header_t)], \
&sdu_buffer->data[payload_offset], \
sdu_buffer_size - payload_offset);
list_add_tail_eurecom (new_sdu, sdu_list);
/* Print octets of incoming data in hexadecimal form */
LOG_D(PDCP, "Following content has been received from RLC (%d,%d)(PDCP header has already been removed):\n", sdu_buffer_size - payload_offset + sizeof(pdcp_data_ind_header_t),
sdu_buffer_size - payload_offset);
//util_print_hex_octets(PDCP, (unsigned char*)new_sdu->data, sdu_buffer_size - PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE + sizeof(pdcp_data_ind_header_t));
util_flush_hex_octets(PDCP, (unsigned char*)new_sdu->data, sdu_buffer_size - payload_offset + sizeof(pdcp_data_ind_header_t));
/*
* Update PDCP statistics
* XXX Following two actions are identical, is there a merge error?
*/
if (eNB_flag == 1) {
Pdcp_stats_rx[module_id][(rb_id & RAB_OFFSET2) >> RAB_SHIFT2][(rb_id & RAB_OFFSET) - DTCH]++;
Pdcp_stats_rx_bytes[module_id][(rb_id & RAB_OFFSET2) >> RAB_SHIFT2][(rb_id & RAB_OFFSET) - DTCH] += sdu_buffer_size;
} else {
Pdcp_stats_rx[module_id][(rb_id & RAB_OFFSET2) >> RAB_SHIFT2][(rb_id & RAB_OFFSET) - DTCH]++;
Pdcp_stats_rx_bytes[module_id][(rb_id & RAB_OFFSET2) >> RAB_SHIFT2][(rb_id & RAB_OFFSET) - DTCH] += sdu_buffer_size;
}
}
free_mem_block(sdu_buffer);
return TRUE;
}
//-----------------------------------------------------------------------------
void
pdcp_run (u32_t frame, u8 eNB_flag, u8 UE_index, u8 eNB_index) {
//-----------------------------------------------------------------------------
#ifndef NAS_NETLINK
#ifdef USER_MODE
#define PDCP_DUMMY_BUFFER_SIZE 38
unsigned char pdcp_dummy_buffer[PDCP_DUMMY_BUFFER_SIZE];
#endif
#endif
// unsigned int diff, i, k, j;
// unsigned char *otg_pkt=NULL;
// int src_id, module_id; // src for otg
// int dst_id, rb_id; // dst for otg
// int service_id, session_id;
// int pkt_size=0;
// unsigned int ctime=0;
vcd_signal_dumper_dump_function_by_name(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_IN);
/*
if ((frame % 128) == 0) {
for (i=0; i < NB_UE_INST; i++) {
for (j=0; j < NB_CNX_CH; j++) {
for (k=0; k < NB_RAB_MAX; k++) {
diff = Pdcp_stats_tx_bytes[i][j][k];
Pdcp_stats_tx_bytes[i][j][k] = 0;
Pdcp_stats_tx_rate[i][j][k] = (diff*8) >> 7;
diff = Pdcp_stats_rx_bytes[i][j][k];
Pdcp_stats_rx_bytes[i][j][k] = 0;
Pdcp_stats_rx_rate[i][j][k] = (diff*8) >> 7;
}
}
}
}
*/
pdcp_fifo_read_input_sdus_from_otg(frame, eNB_flag, UE_index, eNB_index);
// IP/NAS -> PDCP traffic : TX, read the pkt from the upper layer buffer
pdcp_fifo_read_input_sdus(frame,eNB_flag);
// NAS -> PDCP traffic
pdcp_fifo_read_input_sdus(frame,eNB_flag);
// PDCP -> NAS/IP traffic: RX
pdcp_fifo_flush_sdus(frame,eNB_flag);
vcd_signal_dumper_dump_function_by_name(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_OUT);
}
BOOL rrc_pdcp_config_asn1_req (module_id_t module_id, u32_t frame, u8_t eNB_flag, u32_t index,
SRB_ToAddModList_t* srb2add_list,
DRB_ToAddModList_t* drb2add_list,
DRB_ToReleaseList_t* drb2release_list
#ifdef Rel10
,PMCH_InfoList_r9_t* pmch_InfoList_r9
#endif
){
long int rb_id = 0;
long int lc_id = 0;
long int srb_id = 0;
long int mch_id = 0;
rlc_mode_t rlc_type = RLC_NONE;
DRB_Identity_t drb_id = 0;
DRB_Identity_t* pdrb_id = NULL;
u8 drb_sn = 0;
u8 srb_sn = 5; // fixed sn for SRBs
u8 drb_report = 0;
long int cnt = 0;
u16 header_compression_profile = 0;
u32 action = ACTION_ADD;
SRB_ToAddMod_t* srb_toaddmod = NULL;
DRB_ToAddMod_t* drb_toaddmod = NULL;
#ifdef Rel10
int i,j;
MBMS_SessionInfoList_r9_t *mbms_SessionInfoList_r9;
MBMS_SessionInfo_r9_t *MBMS_SessionInfo= NULL;
#endif
LOG_D(PDCP, "[MOD_id %d]CONFIG REQ ASN1 for %s %d\n",module_id,
(eNB_flag == 1)? "eNB": "UE", index);
// srb2add_list does not define pdcp config, we use rlc info to setup the pdcp dcch0 and dcch1 channels
if (srb2add_list != NULL) {
for (cnt=0;cnt<srb2add_list->list.count;cnt++) {
srb_id = srb2add_list->list.array[cnt]->srb_Identity;
rb_id = (index * NB_RB_MAX) + srb_id;
if (pdcp_array[module_id][rb_id].instanciated_instance == module_id + 1)
action = ACTION_MODIFY;
else
action = ACTION_ADD;
srb_toaddmod = srb2add_list->list.array[cnt];
rlc_type = RLC_MODE_AM;
if (srb_toaddmod->rlc_Config) {
switch (srb_toaddmod->rlc_Config->present) {
case SRB_ToAddMod__rlc_Config_PR_NOTHING:
break;
case SRB_ToAddMod__rlc_Config_PR_explicitValue:
switch (srb_toaddmod->rlc_Config->choice.explicitValue.present) {
case RLC_Config_PR_NOTHING:
break;
default:
pdcp_config_req_asn1 (module_id,
frame,
eNB_flag, // not really required
index, // ue/enb index : used for log
rlc_type,
action,
lc_id,
mch_id,
rb_id,
srb_sn,
0, // drb_report
0, // header compression
0xff); //UNDEF_SECURITY_MODE
break;
}
break;
case SRB_ToAddMod__rlc_Config_PR_defaultValue:
// already the default values
break;
default:;
}
}
}
}
// reset the action
if (drb2add_list != NULL) {
for (cnt=0;cnt<drb2add_list->list.count;cnt++) {
drb_toaddmod = drb2add_list->list.array[cnt];
drb_id = drb_toaddmod->drb_Identity;
if (drb_toaddmod->logicalChannelIdentity != null) {
lc_id = *drb_toaddmod->logicalChannelIdentity;
} else {
lc_id = -1;
}
rb_id = (index * NB_RB_MAX) + lc_id;
if (pdcp_array[module_id][rb_id].instanciated_instance == module_id + 1)
action = ACTION_MODIFY;
else
action = ACTION_ADD;
if (drb_toaddmod->pdcp_Config){
if (drb_toaddmod->pdcp_Config->discardTimer) {
// set the value of the timer
}
if (drb_toaddmod->pdcp_Config->rlc_AM) {
drb_report = drb_toaddmod->pdcp_Config->rlc_AM->statusReportRequired;
rlc_type =RLC_MODE_AM;
}
if (drb_toaddmod->pdcp_Config->rlc_UM){
drb_sn = drb_toaddmod->pdcp_Config->rlc_UM->pdcp_SN_Size;
rlc_type =RLC_MODE_UM;
}
switch (drb_toaddmod->pdcp_Config->headerCompression.present) {
case PDCP_Config__headerCompression_PR_NOTHING:
case PDCP_Config__headerCompression_PR_notUsed:
header_compression_profile=0x0;
break;
case PDCP_Config__headerCompression_PR_rohc:
// parse the struc and get the rohc profile
if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0001)
header_compression_profile=0x0001;
else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0002)
header_compression_profile=0x0002;
else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0003)
header_compression_profile=0x0003;
else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0004)
header_compression_profile=0x0004;
else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0006)
header_compression_profile=0x0006;
else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0101)
header_compression_profile=0x0101;
else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0102)
header_compression_profile=0x0102;
else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0103)
header_compression_profile=0x0103;
else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0104)
header_compression_profile=0x0104;
else {
header_compression_profile=0x0;
LOG_W(PDCP,"unknown header compresion profile\n");
}
// set the applicable profile
break;
default:
LOG_W(PDCP,"[MOD_id %d][RB %d] unknown drb_toaddmod->PDCP_Config->headerCompression->present \n",module_id,drb_id);
}
pdcp_config_req_asn1 (module_id,
frame,
eNB_flag, // not really required
index,
rlc_type,
action,
lc_id,
mch_id,
rb_id,
drb_sn,
drb_report,
header_compression_profile,
0xff);
}
}
}
if (drb2release_list != NULL) {
for (cnt=0;cnt<drb2add_list->list.count;cnt++) {
pdrb_id = drb2release_list->list.array[cnt];
rb_id = (index * NB_RB_MAX) + pdrb_id;
action = ACTION_REMOVE;
pdcp_config_req_asn1 (module_id,
frame,
eNB_flag, // not really required
index,
rlc_type,
action,
lc_id,
mch_id,
rb_id,
0,
0,
0,
0xff);
}
}
#ifdef Rel10
if (pmch_InfoList_r9 != NULL){
for (i=0;i<pmch_InfoList_r9->list.count;i++){
mbms_SessionInfoList_r9 = &(pmch_InfoList_r9->list.array[i]->mbms_SessionInfoList_r9);
for (j=0;j<mbms_SessionInfoList_r9->list.count;j++) {
MBMS_SessionInfo = mbms_SessionInfoList_r9->list.array[j];
//lc_id = MBMS_SessionInfo->logicalChannelIdentity_r9; // lcid
lc_id = MBMS_SessionInfo->sessionId_r9->buf[0];
mch_id = MBMS_SessionInfo->tmgi_r9.serviceId_r9.buf[2]; //serviceId is 3-octet string
// can set the mch_id = i
if (eNB_flag)
rb_id = (mch_id * maxSessionPerPMCH ) + lc_id ;
else
rb_id = (mch_id * maxSessionPerPMCH ) + lc_id + (maxDRB + 3);
if (pdcp_mbms_array[module_id][rb_id].instanciated_instance == module_id + 1)
action = ACTION_MBMS_MODIFY;
else
action = ACTION_MBMS_ADD;
rlc_type = RLC_MODE_UM;
pdcp_config_req_asn1 (module_id,
frame,
eNB_flag, // not really required
index,
rlc_type,
action,
lc_id,
mch_id,
rb_id,
0, // set to deafult
0,
0,
0xff);
}
}
}
#endif
return 1;
}
BOOL pdcp_config_req_asn1 (module_id_t module_id, u32 frame, u8_t eNB_flag, u16 index,
rlc_mode_t rlc_mode, u32 action, u16 lc_id,u16 mch_id, rb_id_t rb_id,
u8 rb_sn, u8 rb_report, u16 header_compression_profile,
u8 security_mode){
switch (action) {
case ACTION_ADD:
pdcp_array[module_id][rb_id].instanciated_instance = module_id + 1;
pdcp_array[module_id][rb_id].lcid = lc_id;
pdcp_array[module_id][rb_id].header_compression_profile=header_compression_profile;
pdcp_array[module_id][rb_id].cipheringAlgorithm=security_mode & 0x0f;
pdcp_array[module_id][rb_id].integrityProtAlgorithm=(security_mode>>4) & 0xf;
pdcp_array[module_id][rb_id].status_report = rb_report;
if (rb_sn == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits)
pdcp_array[module_id][rb_id].seq_num_size = 7;
else if (rb_sn == PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits)
pdcp_array[module_id][rb_id].seq_num_size=12;
else
pdcp_array[module_id][rb_id].seq_num_size=5;
pdcp_array[module_id][rb_id].rlc_mode = rlc_mode;
pdcp_array[module_id][rb_id].next_pdcp_tx_sn = 0;
pdcp_array[module_id][rb_id].next_pdcp_rx_sn = 0;
pdcp_array[module_id][rb_id].tx_hfn = 0;
pdcp_array[module_id][rb_id].rx_hfn = 0;
pdcp_array[module_id][rb_id].last_submitted_pdcp_rx_sn = 4095;
pdcp_array[module_id][rb_id].first_missing_pdu = -1;
LOG_I(PDCP,"[%s %d] Config request : Action ADD for %s %d: Frame %d radio bearer id %d configured with SN size %d bits and RLC %s\n",
(eNB_flag) ? "eNB" : "UE", module_id,
(eNB_flag) ? "UE" : "eNB", index,
frame, rb_id, pdcp_array[module_id][rb_id].seq_num_size,
(rlc_mode == 1) ? "AM" : (rlc_mode == 2) ? "TM" : "UM");
LOG_D(PDCP, "[MSC_NEW][FRAME %05d][PDCP][MOD %02d][RB %02d]\n", frame, module_id,rb_id);
break;
case ACTION_MODIFY:
pdcp_array[module_id][rb_id].header_compression_profile=header_compression_profile;
pdcp_array[module_id][rb_id].cipheringAlgorithm=security_mode & 0x0f;
pdcp_array[module_id][rb_id].integrityProtAlgorithm=(security_mode>>4) & 0xf;
pdcp_array[module_id][rb_id].status_report = rb_report;
pdcp_array[module_id][rb_id].rlc_mode = rlc_mode;
if (rb_sn == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits)
pdcp_array[module_id][rb_id].seq_num_size = 7;
else if (rb_sn == PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits)
pdcp_array[module_id][rb_id].seq_num_size=12;
else
pdcp_array[module_id][rb_id].seq_num_size=5;
LOG_I(PDCP,"[%s %d] Config request : Action MODIFY for %s %d: Frame %d radio bearer id %d configured with SN size %d and RLC %s \n",
(eNB_flag) ? "eNB" : "UE", module_id,
(eNB_flag) ? "UE" : "eNB", index,
frame, rb_id, rb_sn,
(rlc_mode == 1) ? "AM" : (rlc_mode == 2) ? "TM" : "UM");
break;
case ACTION_REMOVE:
pdcp_array[module_id][rb_id].instanciated_instance = 0;
pdcp_array[module_id][rb_id].lcid= 0;
pdcp_array[module_id][rb_id].header_compression_profile=0x0;
pdcp_array[module_id][rb_id].cipheringAlgorithm=0xff;
pdcp_array[module_id][rb_id].integrityProtAlgorithm=0xff;
pdcp_array[module_id][rb_id].status_report = 0;
pdcp_array[module_id][rb_id].rlc_mode = RLC_NONE;
pdcp_array[module_id][rb_id].next_pdcp_tx_sn = 0;
pdcp_array[module_id][rb_id].next_pdcp_rx_sn = 0;
pdcp_array[module_id][rb_id].tx_hfn = 0;
pdcp_array[module_id][rb_id].rx_hfn = 0;
pdcp_array[module_id][rb_id].last_submitted_pdcp_rx_sn = 4095;
pdcp_array[module_id][rb_id].seq_num_size = 0;
pdcp_array[module_id][rb_id].first_missing_pdu = -1;
LOG_I(PDCP,"[%s %d] Config request : ACTION_REMOVE: Frame %d radio bearer id %d configured\n",
(eNB_flag) ? "eNB" : "UE", module_id, frame, rb_id);
break;
case ACTION_MBMS_ADD:
case ACTION_MBMS_MODIFY:
pdcp_mbms_array[module_id][rb_id].instanciated_instance = module_id + 1 ;
pdcp_mbms_array[module_id][rb_id].service_id = mch_id;
pdcp_mbms_array[module_id][rb_id].session_id = lc_id;
pdcp_mbms_array[module_id][rb_id].rb_id = rb_id;
LOG_I(PDCP,"[%s %d] Config request : ACTION_MBMS_ADD: Frame %d service_id/mch index %d, session_id/lcid %d, rbid %d configured\n",
(eNB_flag == 1) ? "eNB" : "UE", module_id, frame, mch_id, lc_id, rb_id);
break;
case ACTION_SET_SECURITY_MODE:
if ((security_mode >= 0 ) && (security_mode <=0x77)) {
pdcp_array[module_id][rb_id].cipheringAlgorithm= security_mode & 0x0f;
pdcp_array[module_id][rb_id].integrityProtAlgorithm = (security_mode>>4) & 0xf;
LOG_D(PDCP,"[%s %d] Set security mode : ACTION_SET_SECURITY_MODE: Frame %d cipheringAlgorithm %d integrityProtAlgorithm %d\n",
(eNB_flag) ? "eNB" : "UE", module_id, frame,
pdcp_array[module_id][rb_id].cipheringAlgorithm,
pdcp_array[module_id][rb_id].integrityProtAlgorithm );
}else
LOG_D(PDCP,"[%s %d] bad security mode %d", security_mode);
break;
default:
LOG_W(PDCP,"unknown action %d for the config request\n",action);
break;
}
return 0;
}
void
rrc_pdcp_config_req (module_id_t module_id, u32 frame, u8_t eNB_flag, u32 action, rb_id_t rb_id, u8 security_mode){
/*
* Initialize sequence number state variables of relevant PDCP entity
*/
switch (action) {
case ACTION_ADD:
pdcp_array[module_id][rb_id].instanciated_instance = module_id + 1;
pdcp_array[module_id][rb_id].next_pdcp_tx_sn = 0;
pdcp_array[module_id][rb_id].next_pdcp_rx_sn = 0;
pdcp_array[module_id][rb_id].tx_hfn = 0;
pdcp_array[module_id][rb_id].rx_hfn = 0;
/* SN of the last PDCP SDU delivered to upper layers */
pdcp_array[module_id][rb_id].last_submitted_pdcp_rx_sn = 4095;
if ( (rb_id % NB_RB_MAX) < DTCH) // SRB
pdcp_array[module_id][rb_id].seq_num_size = 5;
else // DRB
pdcp_array[module_id][rb_id].seq_num_size = 12;
pdcp_array[module_id][rb_id].first_missing_pdu = -1;
LOG_D(PDCP,"[%s %d] Config request : Action ADD: Frame %d radio bearer id %d configured\n",
(eNB_flag) ? "eNB" : "UE", module_id, frame, rb_id);
LOG_D(PDCP, "[MSC_NEW][FRAME %05d][PDCP][MOD %02d][RB %02d]\n", frame, module_id,rb_id);
break;
case ACTION_MODIFY:
break;
case ACTION_REMOVE:
pdcp_array[module_id][rb_id].instanciated_instance = 0;
pdcp_array[module_id][rb_id].next_pdcp_tx_sn = 0;
pdcp_array[module_id][rb_id].next_pdcp_rx_sn = 0;
pdcp_array[module_id][rb_id].tx_hfn = 0;
pdcp_array[module_id][rb_id].rx_hfn = 0;
pdcp_array[module_id][rb_id].last_submitted_pdcp_rx_sn = 4095;
pdcp_array[module_id][rb_id].seq_num_size = 0;
pdcp_array[module_id][rb_id].first_missing_pdu = -1;
LOG_D(PDCP,"[%s %d] Config request : ACTION_REMOVE: Frame %d radio bearer id %d configured\n",
(eNB_flag) ? "eNB" : "UE", module_id, frame, rb_id);
break;
case ACTION_SET_SECURITY_MODE:
if ((security_mode >= 0 ) && (security_mode <=0x77)) {
pdcp_array[module_id][rb_id].cipheringAlgorithm= security_mode & 0x0f;
pdcp_array[module_id][rb_id].integrityProtAlgorithm = (security_mode>>4) & 0xf;
LOG_D(PDCP,"[%s %d] Set security mode : ACTION_SET_SECURITY_MODE: Frame %d cipheringAlgorithm %d integrityProtAlgorithm %d\n",
(eNB_flag) ? "eNB" : "UE", module_id, frame,
pdcp_array[module_id][rb_id].cipheringAlgorithm,
pdcp_array[module_id][rb_id].integrityProtAlgorithm );
}else
LOG_D(PDCP,"[%s %d] bad security mode %d", security_mode);
break;
default:
break;
}
}
// TODO PDCP module initialization code might be removed
int
pdcp_module_init ()
{
//-----------------------------------------------------------------------------
#ifdef NAS_FIFO
int ret;
ret=rtf_create(PDCP2NAS_FIFO,32768);
if (ret < 0) {
LOG_E(PDCP, "Cannot create PDCP2NAS fifo %d (ERROR %d)\n", PDCP2NAS_FIFO, ret);
return -1;
} else {
LOG_D(PDCP, "Created PDCP2NAS fifo %d\n", PDCP2NAS_FIFO);
rtf_reset(PDCP2NAS_FIFO);
}
ret=rtf_create(NAS2PDCP_FIFO,32768);
if (ret < 0) {
LOG_E(PDCP, "Cannot create NAS2PDCP fifo %d (ERROR %d)\n", NAS2PDCP_FIFO, ret);
return -1;
} else {
LOG_D(PDCP, "Created NAS2PDCP fifo %d\n", NAS2PDCP_FIFO);
rtf_reset(NAS2PDCP_FIFO);
}
pdcp_2_nas_irq = 0;
pdcp_input_sdu_remaining_size_to_read=0;
pdcp_input_sdu_size_read=0;
#endif
return 0;
}
//-----------------------------------------------------------------------------
void
pdcp_module_cleanup ()
//-----------------------------------------------------------------------------
{
#ifdef NAS_FIFO
rtf_destroy(NAS2PDCP_FIFO);
rtf_destroy(PDCP2NAS_FIFO);
#endif
}
//-----------------------------------------------------------------------------
void
pdcp_layer_init ()
{
//-----------------------------------------------------------------------------
unsigned int i, j, k;
/*
* Initialize SDU list
*/
list_init(&pdcp_sdu_list, NULL);
for (i=0; i < MAX_MODULES; i++) {
for (j=0; j < MAX_RB; j++) {
memset((void*)&pdcp_array[i][j], 0, sizeof(pdcp_t));
}
}
for (i=0; i < MAX_MODULES; i++) { // MAX service
for (j=0; j < 16*29; j++) { // max session
memset((void*)&pdcp_mbms_array[i][j], 0, sizeof(pdcp_mbms_t));
}
}
LOG_I(PDCP, "PDCP layer has been initialized\n");
pdcp_output_sdu_bytes_to_write=0;
pdcp_output_header_bytes_to_write=0;
pdcp_input_sdu_remaining_size_to_read=0;
/*
* Initialize PDCP entities (see pdcp_t at pdcp.h)
*/
// set RB for eNB : this is now down by RRC for each mod id and rab id when needed.
/* for (i=0;i < NB_eNB_INST; i++) {
for (j=NB_eNB_INST; j < NB_eNB_INST+NB_UE_INST; j++ ) {
pdcp_config_req(i, (j-NB_eNB_INST) * NB_RB_MAX + DCCH, DCCH ); // default DRB
pdcp_config_req(i, (j-NB_eNB_INST) * NB_RB_MAX + DCCH1, DCCH1 ); // default DRB
pdcp_config_req(i, (j-NB_eNB_INST) * NB_RB_MAX + DTCH, DTCH ); // default DRB
}
}
// set RB for UE
for (i=NB_eNB_INST;i<NB_eNB_INST+NB_UE_INST; i++) {
for (j=0;j<NB_eNB_INST; j++) {
pdcp_config_req(i, j * NB_RB_MAX + DCCH, DCCH ); // default DRB
pdcp_config_req(i, j * NB_RB_MAX + DCCH1, DCCH1 ); // default DRB
pdcp_config_req(i, j * NB_RB_MAX + DTCH, DTCH ); // default DRB
}
}*/
for (i=0;i<NB_UE_INST;i++) { // ue
for (k=0;k<NB_eNB_INST;k++) { // enb
for(j=0;j<NB_RAB_MAX;j++) {//rb
Pdcp_stats_tx[i][k][j]=0;
Pdcp_stats_tx_bytes[i][k][j]=0;
Pdcp_stats_tx_bytes_last[i][k][j]=0;
Pdcp_stats_tx_rate[i][k][j]=0;
Pdcp_stats_rx[i][k][j]=0;
Pdcp_stats_rx_bytes[i][k][j]=0;
Pdcp_stats_rx_bytes_last[i][k][j]=0;
Pdcp_stats_rx_rate[i][k][j]=0;
}
}
}
}
//-----------------------------------------------------------------------------
void
pdcp_layer_cleanup ()
//-----------------------------------------------------------------------------
{
list_free (&pdcp_sdu_list);
}
#ifdef NAS_FIFO
EXPORT_SYMBOL(pdcp_2_nas_irq);
#endif //NAS_FIFO
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