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Fix the arithmetic exception

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When calculating PRB DL/UL usage per UE, the division with 0 might occur
even though the scheduler was locked. It is expected to happen only while
the last UE is disconnecting.

Signed-off-by: Teodora Vladić <teodora.vladic@openairinterface.org>
This commit is contained in:
Teodora Vladić
2026-05-28 10:42:55 +02:00
parent 161b94b0cb
commit eccae5bd52
1 changed files with 4 additions and 2 deletions
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6
openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_kpm_subs.c
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@@ -185,7 +185,8 @@ static meas_record_lst_t fill_RRU_PrbTotDl(__attribute__((unused)) const label_i
meas_record.value = INTEGER_MEAS_VALUE;
// Get the number of DL PRBs
meas_record.int_val = (ue_info.ue->mac_stats.dl.total_rbs - last_total_prbs[ue_idx].dl) * 100 / (node_stats[1].mac_stats.dl.total_prb_aggregate - node_stats[0].mac_stats.dl.total_prb_aggregate); // [%]
const uint64_t tot_prb_dl_aggr = node_stats[1].mac_stats.dl.total_prb_aggregate - node_stats[0].mac_stats.dl.total_prb_aggregate;
meas_record.int_val = (tot_prb_dl_aggr == 0) ? 0 : (ue_info.ue->mac_stats.dl.total_rbs - last_total_prbs[ue_idx].dl) * 100 / tot_prb_dl_aggr; // [%]
last_total_prbs[ue_idx].dl = ue_info.ue->mac_stats.dl.total_rbs;
return meas_record;
@@ -204,7 +205,8 @@ static meas_record_lst_t fill_RRU_PrbTotUl(__attribute__((unused)) const label_i
meas_record.value = INTEGER_MEAS_VALUE;
// Get the number of UL PRBs
meas_record.int_val = (ue_info.ue->mac_stats.ul.total_rbs - last_total_prbs[ue_idx].ul) * 100 / (node_stats[1].mac_stats.ul.total_prb_aggregate - node_stats[0].mac_stats.ul.total_prb_aggregate); // [%]
const uint64_t tot_prb_ul_aggr = node_stats[1].mac_stats.ul.total_prb_aggregate - node_stats[0].mac_stats.ul.total_prb_aggregate;
meas_record.int_val = (tot_prb_ul_aggr == 0) ? 0 : (ue_info.ue->mac_stats.ul.total_rbs - last_total_prbs[ue_idx].ul) * 100 / tot_prb_ul_aggr; // [%]
last_total_prbs[ue_idx].ul = ue_info.ue->mac_stats.ul.total_rbs;
return meas_record;