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nr-ip-over-LTE: Resolved issue with duplicate IP packet at the receiver UE IP interface and packet losses are reduced. Remaining to identify why occasionally IP packets are received at the PDCP stack later than the time slot of their arrival at PHY/MAC. Introduced some debug logs, to be removed later.

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This commit is contained in:
Raymond Knopp
2019-09-24 18:53:39 +02:00
parent 889bc96c5d
commit 6d6d05535c
10 changed files with 62 additions and 34 deletions
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openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
+4 -4
View File
@@ -228,7 +228,7 @@ int8_t nr_ue_decode_mib(
void *pduP,
uint16_t cell_id ){
LOG_I(MAC,"[L2][MAC] decode mib\n");
LOG_D(MAC,"[L2][MAC] decode mib\n");
NR_UE_MAC_INST_t *mac = get_mac_inst(module_id);
@@ -2387,15 +2387,15 @@ nr_ue_send_sdu(module_id_t module_idP,
#endif
if ((rx_lcids[i] < NB_RB_MAX) && (rx_lcids[i] > DCCH1)) {
LOG_I(MAC,
LOG_D(MAC,
"[UE %d] Frame %d : DLSCH -> DL-DTCH%d (eNB %d, %d bytes)\n",
module_idP, frameP, rx_lcids[i], eNB_index,
rx_lengths[i]);
#if defined(ENABLE_MAC_PAYLOAD_DEBUG)
LOG_I(MAC, "Printing MAC PDU contents \n");
LOG_I(MAC, "Printing MAC PDU contents at slot: %d \n", subframeP);
int j;
for (j = 0; j < 10; j++) //rx_lengths[i]
for (j = 0; j < 20; j++) //rx_lengths[i]
LOG_I(MAC, "%x.", (unsigned char) payload_ptr[j]);
LOG_I(MAC, "\n");
#endif
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c
+12 -8
View File
@@ -285,6 +285,11 @@ int configure_fapi_dl_Tx(nfapi_nr_dl_config_request_body_t *dl_req,
}
void nr_schedule_uss_dlsch_phytest(module_id_t module_idP,
frame_t frameP,
sub_frame_t slotP)
@@ -430,7 +435,7 @@ void nr_schedule_uss_dlsch_phytest(module_id_t module_idP,
post_padding = 1;
}
offset = generate_dlsch_header((unsigned char *) DLSCH_pdu.payload[0],
offset = generate_dlsch_header((unsigned char *)nr_mac->UE_list.DLSCH_pdu[CC_id][0][0].payload[0], //DLSCH_pdu.payload[0],
num_sdus, //num_sdus
sdu_lengths, //
sdu_lcids, 255, // no drx
@@ -442,20 +447,17 @@ void nr_schedule_uss_dlsch_phytest(module_id_t module_idP,
// Probably there should be other actions done before that
// cycle through SDUs and place in dlsch_buffer
// Since we do not have an active UE_list for now we replace with a single DLSCH_pdu
//memcpy(&UE_list->DLSCH_pdu[CC_id][0][UE_id].payload[0][offset], dlsch_buffer, sdu_length_total);
memcpy(&DLSCH_pdu.payload[0][offset], dlsch_buffer, sdu_length_total);
memcpy(&nr_mac->UE_list.DLSCH_pdu[CC_id][0][UE_id].payload[0][offset], dlsch_buffer, sdu_length_total);
// fill remainder of DLSCH with 0
for (int j = 0; j < (TBS - sdu_length_total - offset); j++) {
// Since we do not have an active UE_list for now we replace with a single DLSCH_pdu
//UE_list->DLSCH_pdu[CC_id][0][UE_id].payload[0][offset + sdu_length_total + j] = 0;
DLSCH_pdu.payload[0][offset + sdu_length_total + j] = 0;
nr_mac->UE_list.DLSCH_pdu[CC_id][0][0].payload[0][offset + sdu_length_total + j] = 0;
}
TBS_bytes = configure_fapi_dl_Tx(dl_req, TX_req, cfg, &nr_mac->coreset[CC_id][1], &nr_mac->search_space[CC_id][1], nr_mac->pdu_index[CC_id]);
memcpy(nr_mac->UE_list.DLSCH_pdu[CC_id][0][0].payload[0],DLSCH_pdu.payload[0],TBS_bytes);
TBS_bytes = configure_fapi_dl_Tx(dl_req, TX_req, cfg, &nr_mac->coreset[CC_id][1], &nr_mac->search_space[CC_id][1], nr_mac->pdu_index[CC_id]);
LOG_I(MAC, "Printing first 10 payload bytes at the gNB side, Frame: %d, slot: %d, , TBS size: %d \n \n", frameP, slotP, TBS_bytes);
for(int i = 0; i < 10; i++) { // TBS_bytes dlsch_pdu_rel15->transport_block_size/8 6784/8
@@ -504,3 +506,5 @@ void nr_schedule_uss_dlsch_phytest(module_id_t module_idP,
}
} //for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++)
}
openair2/LAYER2/PDCP_v10.1.0/pdcp.c
+7
View File
@@ -528,6 +528,8 @@ pdcp_data_ind(
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_IN);
LOG_DUMPMSG(PDCP,DEBUG_PDCP,(char *)sdu_buffer_pP->data,sdu_buffer_sizeP,
"[MSG] PDCP UL %s PDU on rb_id %d\n", (srb_flagP)? "CONTROL" : "DATA", rb_idP);
#if T_TRACER
if (ctxt_pP->enb_flag != ENB_FLAG_NO)
@@ -1050,6 +1052,11 @@ pdcp_data_ind(
memcpy(&new_sdu_p->data[sizeof (pdcp_data_ind_header_t)],
&sdu_buffer_pP->data[payload_offset],
sdu_buffer_sizeP - payload_offset);
LOG_I(PDCP, "Printing PDCP SDU before adding it to the list: \n");
for (int i=0; i<30; i++){
LOG_I(PDCP, "%x", sdu_buffer_pP->data[i]);
}
list_add_tail_eurecom (new_sdu_p, sdu_list_p);
}
openair2/LAYER2/PDCP_v10.1.0/pdcp_fifo.c
+4
View File
@@ -135,6 +135,10 @@ int pdcp_fifo_flush_sdus(const protocol_ctxt_t *const ctxt_pP) {
} // PDCP_USE_NETLINK
AssertFatal(ret >= 0,"[PDCP_FIFOS] pdcp_fifo_flush_sdus (errno: %d %s)\n", errno, strerror(errno));
LOG_I(PDCP, "Printing PDCP SDU before removing it from the list: \n");
for (int i=0; i<30; i++){
LOG_I(PDCP, "%x", sdu_p->data[i]);
}
list_remove_head (&pdcp_sdu_list);
free_mem_block (sdu_p, __func__);
pdcp_nb_sdu_sent ++;
openair2/LAYER2/RLC/UM_v9.3.0/rlc_um_dar.c
+14 -3
View File
@@ -723,10 +723,10 @@ void rlc_um_check_timer_dar_time_out(
signed int in_window;
rlc_usn_t old_vr_ur;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RLC_UM_CHECK_TIMER_DAR_TIME_OUT,VCD_FUNCTION_IN);
if ((rlc_pP->t_reordering.running)) {
//LOG_I(RLC, "[rlc_um_check_timer_dar_time_out] 2 \n");
if (
// CASE 1: start time out
// +-----------+------------------+----------+
@@ -787,6 +787,7 @@ void rlc_um_check_timer_dar_time_out(
LOG_D(RLC, " %d", rlc_pP->vr_ur);
LOG_D(RLC, "\n");
#endif
LOG_I(RLC, "[rlc_um_check_timer_dar_time_out] 3 \n");
rlc_um_try_reassembly(ctxt_pP, rlc_pP ,old_vr_ur, rlc_pP->vr_ur);
in_window = rlc_um_in_window(ctxt_pP, rlc_pP, rlc_pP->vr_ur, rlc_pP->vr_uh, rlc_pP->vr_uh);
@@ -1039,6 +1040,7 @@ rlc_um_receive_process_dar (
} else {
free_mem_block(pdu_mem_pP, __func__);
pdu_mem_pP = NULL;
//LOG_I(RLC, "[rlc_um_receive_process_dar] Problematic case 1 \n");
return;
}
@@ -1065,6 +1067,7 @@ rlc_um_receive_process_dar (
rlc_pP->stat_rx_data_pdu_out_of_window += 1;
rlc_pP->stat_rx_data_bytes_out_of_window += tb_sizeP;
free_mem_block(pdu_mem_pP, __func__);
//LOG_I(RLC, "[rlc_um_receive_process_dar] Problematic case 2 \n");
pdu_mem_pP = NULL;
RLC_UM_MUTEX_UNLOCK(&rlc_pP->lock_dar_buffer);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RLC_UM_RECEIVE_PROCESS_DAR, VCD_FUNCTION_OUT);
@@ -1083,6 +1086,7 @@ rlc_um_receive_process_dar (
//discard the PDU
rlc_pP->stat_rx_data_pdus_duplicate += 1;
rlc_pP->stat_rx_data_bytes_duplicate += tb_sizeP;
//LOG_I(RLC, "[rlc_um_receive_process_dar] Problematic case 3 \n");
free_mem_block(pdu_mem_pP, __func__);
pdu_mem_pP = NULL;
RLC_UM_MUTEX_UNLOCK(&rlc_pP->lock_dar_buffer);
@@ -1115,6 +1119,7 @@ rlc_um_receive_process_dar (
// -if VR(UR) falls outside of the reordering window:
// -set VR(UR) to (VR(UH) – UM_Window_Size);
if (rlc_um_in_reordering_window(ctxt_pP, rlc_pP, sn) < 0) {
LOG_I(RLC, "[rlc_um_receive_process_dar] Before calling rlc_um_try_reassembly() 1 \n");
#if TRACE_RLC_UM_DAR
LOG_D(RLC, PROTOCOL_RLC_UM_CTXT_FMT" RX PDU SN %d OUTSIDE REORDERING WINDOW VR(UH)=%d UM_Window_Size=%d\n",
PROTOCOL_RLC_UM_CTXT_ARGS(ctxt_pP, rlc_pP),
@@ -1130,12 +1135,13 @@ rlc_um_receive_process_dar (
if (in_window < 0) {
in_window = in_window + rlc_pP->rx_sn_modulo;
}
LOG_I(RLC, "[rlc_um_receive_process_dar] Before calling rlc_um_try_reassembly() 2 \n");
rlc_um_try_reassembly(ctxt_pP, rlc_pP, rlc_pP->vr_ur, in_window);
}
if (rlc_um_in_reordering_window(ctxt_pP, rlc_pP, rlc_pP->vr_ur) < 0) {
//LOG_I(RLC, "[rlc_um_receive_process_dar] Problematic case 4 \n");
#if TRACE_RLC_UM_DAR
LOG_D(RLC, PROTOCOL_RLC_UM_CTXT_FMT" VR(UR) %d OUTSIDE REORDERING WINDOW SET TO VR(UH) – UM_Window_Size = %d\n",
PROTOCOL_RLC_UM_CTXT_ARGS(ctxt_pP, rlc_pP),
@@ -1154,13 +1160,18 @@ rlc_um_receive_process_dar (
// SDUs to upper layer in ascending order of the RLC SN if not
// delivered before;
if ((sn == rlc_pP->vr_ur) && rlc_um_get_pdu_from_dar_buffer(ctxt_pP, rlc_pP, rlc_pP->vr_ur)) {
LOG_I(RLC, "[rlc_um_receive_process_dar] Before calling rlc_um_try_reassembly() 3 \n");
//sn_tmp = rlc_pP->vr_ur;
do {
rlc_pP->vr_ur = (rlc_pP->vr_ur+1) % rlc_pP->rx_sn_modulo;
} while (rlc_um_get_pdu_from_dar_buffer(ctxt_pP, rlc_pP, rlc_pP->vr_ur) && (rlc_pP->vr_ur != rlc_pP->vr_uh));
LOG_I(RLC, "[rlc_um_receive_process_dar] Before calling rlc_um_try_reassembly() 4 \n");
rlc_um_try_reassembly(ctxt_pP, rlc_pP, sn, rlc_pP->vr_ur);
}
else if (sn != rlc_pP->vr_ur)
LOG_I(RLC, "[rlc_um_receive_process_dar] Problematic case 5, sn: %d, rlc_pP->vr_ur: %d \n",sn, rlc_pP->vr_ur);
else if(!rlc_um_get_pdu_from_dar_buffer(ctxt_pP, rlc_pP, rlc_pP->vr_ur))
//LOG_I(RLC, "[rlc_um_receive_process_dar] Problematic case 6 \n");
// -if t-Reordering is running:
// -if VR(UX) <= VR(UR); or