void pdcp_fifo_read_input_sdus_from_otg (const protocol_ctxt_t* const ctxt_pP) {
unsigned char *otg_pkt=NULL;
module_id_t dst_id; // dst for otg
rb_id_t rb_id;
unsigned int pkt_size=0;
#if defined(USER_MODE) && defined(OAI_EMU)
module_id_t src_id;
static unsigned int pkt_cnt_enb=0, pkt_cnt_ue=0;
Packet_otg_elt_t *otg_pkt_info=NULL;
int result;
uint8_t pdcp_mode, is_ue=0;
#endif
protocol_ctxt_t ctxt;
// we need to add conditions to avoid transmitting data when the UE is not RRC connected.
#if defined(USER_MODE) && defined(OAI_EMU)
if (oai_emulation.info.otg_enabled ==1 ) {
// module_id is source id
while ((otg_pkt_info = pkt_list_remove_head(&(otg_pdcp_buffer[ctxt_pP->instance]))) != NULL) {
LOG_I(OTG,"Mod_id %d Frame %d Got a packet (%p), HEAD of otg_pdcp_buffer[%d] is %p and Nb elements is %d\n",
ctxt_pP->module_id,
ctxt_pP->frame,
otg_pkt_info,
ctxt_pP->instance,
pkt_list_get_head(&(otg_pdcp_buffer[ctxt_pP->instance])),
otg_pdcp_buffer[ctxt_pP->instance].nb_elements);
//otg_pkt_info = pkt_list_remove_head(&(otg_pdcp_buffer[module_id]));
dst_id = (otg_pkt_info->otg_pkt).dst_id; // type is module_id_t
src_id = (otg_pkt_info->otg_pkt).module_id; // type is module_id_t
rb_id = (otg_pkt_info->otg_pkt).rb_id;
is_ue = (otg_pkt_info->otg_pkt).is_ue;
pdcp_mode = (otg_pkt_info->otg_pkt).mode;
// LOG_I(PDCP,"pdcp_fifo, pdcp mode is= %d\n",pdcp_mode);
// generate traffic if the ue is rrc reconfigured state
// if (mac_get_rrc_status(module_id, ctxt_pP->enb_flag, dst_id ) > 2 /*RRC_CONNECTED*/) { // not needed: this test is already done in update_otg_enb
otg_pkt = (unsigned char*) (otg_pkt_info->otg_pkt).sdu_buffer;
pkt_size = (otg_pkt_info->otg_pkt).sdu_buffer_size;
if (otg_pkt != NULL) {
if (is_ue == 0 ) {
PROTOCOL_CTXT_SET_BY_MODULE_ID(
&ctxt,
src_id,
ENB_FLAG_YES,
oai_emulation.info.eNB_ue_module_id_to_rnti[ctxt.module_id][dst_id],
ctxt_pP->frame,
ctxt_pP->subframe,
src_id);
LOG_D(OTG,"[eNB %d] Frame %d sending packet %d from module %d on rab id %d (src %d, dst %d/%x) pkt size %d for pdcp mode %d\n",
ctxt.module_id,
ctxt.frame,
pkt_cnt_enb++,
src_id,
rb_id,
src_id,
dst_id,
oai_emulation.info.eNB_ue_module_id_to_rnti[ctxt.module_id][dst_id],
pkt_size,
pdcp_mode);
result = pdcp_data_req(&ctxt,
SRB_FLAG_NO,
rb_id,
RLC_MUI_UNDEFINED,
RLC_SDU_CONFIRM_NO,
pkt_size,
otg_pkt,
pdcp_mode);
if (result != TRUE) {
LOG_W(OTG,"PDCP data request failed!\n");
}
} else {
//rb_id= eNB_index * MAX_NUM_RB + DTCH;
LOG_D(OTG,"[UE %d] Frame %d: sending packet %d from module %d on rab id %d (src %d/%x, dst %d) pkt size %d\n",
ctxt_pP->module_id,
ctxt_pP->frame,
pkt_cnt_ue++,
ctxt_pP->module_id,
rb_id,
src_id,
pdcp_UE_UE_module_id_to_rnti[ctxt_pP->module_id], // [src_id]
dst_id,
pkt_size);
PROTOCOL_CTXT_SET_BY_MODULE_ID(
&ctxt,
ctxt_pP->module_id, //src_id,
ENB_FLAG_NO,
pdcp_UE_UE_module_id_to_rnti[ctxt_pP->module_id],// [src_id]
ctxt_pP->frame,
ctxt_pP->subframe,
dst_id);
result = pdcp_data_req( &ctxt,
SRB_FLAG_NO,
rb_id,
RLC_MUI_UNDEFINED,
RLC_SDU_CONFIRM_NO,
pkt_size,
otg_pkt,
PDCP_TRANSMISSION_MODE_DATA);
if (result != TRUE) {
LOG_W(OTG,"PDCP data request failed!\n");
}
}
free(otg_pkt);
otg_pkt = NULL;
}
// } //else LOG_D(OTG,"ctxt_pP->frame %d enb %d-> ue %d link not yet established state %d \n", ctxt_pP->frame, eNB_index,dst_id - NB_eNB_INST, mac_get_rrc_status(module_id, ctxt_pP->enb_flag, dst_id - NB_eNB_INST));
}
}
#else
if ((otg_enabled==1) && (ctxt_pP->enb_flag == ENB_FLAG_YES)) { // generate DL traffic
unsigned int ctime=0;
ctime = ctxt_pP->frame * 100;
/*if ((mac_get_rrc_status(eNB_index, ctxt_pP->enb_flag, 0 ) > 2) &&
(mac_get_rrc_status(eNB_index, ctxt_pP->enb_flag, 1 ) > 2)) { */
PROTOCOL_CTXT_SET_BY_MODULE_ID(
&ctxt,
ctxt_pP->module_id,
ctxt_pP->enb_flag,
NOT_A_RNTI,
ctxt_pP->frame,
ctxt_pP->subframe,
ctxt_pP->module_id);
for (dst_id = 0; dst_id<NUMBER_OF_UE_MAX; dst_id++) {
ctxt.rnti = oai_emulation.info.eNB_ue_module_id_to_rnti[ctxt.module_id][dst_id];
if (ctxt.rnti != NOT_A_RNTI) {
if (mac_eNB_get_rrc_status(ctxt.module_id, ctxt.rnti ) > 2 /*RRC_SI_RECEIVED*/) {
unsigned int temp = 0;
otg_pkt=packet_gen(
ENB_MODULE_ID_TO_INSTANCE(ctxt.module_id),
UE_MODULE_ID_TO_INSTANCE(dst_id),
0,
ctime,
&temp);
pkt_size = temp;
if (otg_pkt != NULL) {
rb_id = dst_id * maxDRB + DTCH;
pdcp_data_req(&ctxt,
SRB_FLAG_NO,
rb_id,
RLC_MUI_UNDEFINED,
RLC_SDU_CONFIRM_NO,
pkt_size,
otg_pkt,
PDCP_TRANSMISSION_MODE_DATA);
LOG_I(OTG,
"send packet from module %d on rab id %d (src %d, dst %d) pkt size %d\n",
ctxt_pP->module_id, rb_id, ctxt_pP->module_id, dst_id, pkt_size);
free(otg_pkt);
}
}
}
}
}
#endif
}
int main_below_ip()
{
int i, j, k, l, rtt_owd ,rx_otg=0, simu_time=0, ctime=0, nb_round=0;
float p;
char *packet;
int rx_packet_out;
int pkt_size;
printf(" max enb %d, max ue %d \n", NUMBER_OF_eNB_MAX, NUMBER_OF_UE_MAX);
do {
nb_round=nb_round+1;
// for (stime=0; stime < SIMU_TIME; stime++) // discrete event generation : tick, stime generate the ctime
for (i=0; i<(NUMBER_OF_eNB_MAX + NUMBER_OF_UE_MAX); i++) {
for (j=0; j<(NUMBER_OF_eNB_MAX + NUMBER_OF_UE_MAX); j++) {
for (k=0; k<MAX_NUM_TRAFFIC_STATE; k++) {
LOG_I(OTG,"OTG emulation src=%d, dst=%d, state=%d \n", i, j, k);
ctime=0; // set the ctime to 0
do {
if (simu_time> SIMU_TIME) {
otg_info->ctime=SIMU_TIME;
return(0);
}
LOG_I(OTG,"val :: ctime=%d\n", ctime);
char *packet=NULL;
/*packet=packet_gen(i, j, k, ctime);*/ packet=packet_gen(i, j, ctime, &pkt_size);
if (packet!=NULL) {
if ((ceil(g_otg->duration[i]*uniform_rng()))==ctime) {
printf("DROP PACKET (i=%d,j=%d) seq num=%d\n",i, j, otg_info->seq_num[i][j]);
} else {
printf("SEND PACKET (i=%d,j=%d) seq num=%d\n",i, j, otg_info->seq_num[i][j]);
rtt_owd=ceil(uniform_rng()*8.56);
LOG_I(OTG,"one way delay= %d , (src=%d, dst=%d, state=%d)\n", rtt_owd, i, j, k);
ctime+=rtt_owd;
otg_info->rx_pkt_owd[i][j]=rtt_owd;
simu_time+=rtt_owd;
//rx_packet_out=check_packet(i, j, ctime, packet);
rx_packet_out=otg_rx_pkt(i,j, ctime, packet, pkt_size);
//if (rx_packet_out==NULL)
// LOG_I(OTG,"PKTS INFO:: DROPED\n");
//else{
// if (rx_packet_out!=NULL){
// rx_packet_out=NULL;
free(packet);
// }
//}
//Do not increase the ctime and simu_time with the one way delay.
ctime-=rtt_owd;
simu_time-=rtt_owd;
LOG_I(OTG,"PKTS INFO:: (src=%d, dst=%d, state=%d),NB PKTS=%d ,sequence NB=%d, RTT (one way)ms= %d \n ",i, j, k, otg_info->tx_num_pkt[i][j], otg_info->seq_num[i][j], otg_info->rx_pkt_owd[i][j]);
}
} else
printf("Node (i=%d,j=%d) seq num=%d, ctime %d, prb %lf\n",i, j, otg_info->seq_num[i][j], ctime,(ceil(g_otg->duration[i]*uniform_rng())));
LOG_I(OTG,"Time:: ctime=%d, duration=%d, simu_time=%d, max=%d, (src=%d, dst=%d, state=%d) \n", ctime, g_otg->duration[i],simu_time, SIMU_TIME, i, j,k);
ctime+=1;
simu_time+=1;
} while (ctime<=g_otg->duration[i]) ;
}
if (otg_info->tx_num_pkt[i][j]>otg_info->rx_num_pkt[i][j])
LOG_I(OTG,"STAT: (LOSS):: (src=%d, dst=%d) NB packet TX= %d, NB packet RX = %d, seq NUM=%d\n ",i, j, otg_info->tx_num_pkt[i][j], otg_info->rx_num_pkt[i][j],otg_info->seq_num[i][j] );
else
LOG_I(OTG,"STAT: :: (src=%d, dst=%d) NB packet TX= %d, NB packet RX= %d, seq NUM=%d \n ",i, j, otg_info->tx_num_pkt[i][j], otg_info->rx_num_pkt[i][j], otg_info->seq_num[i][j]);
}
}
} while (simu_time<=SIMU_TIME);
}
