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Prevent infinite loop on HARQ PID=-1 and Single Entry PHR

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When receiving single-entry PHR with HARQ PID -1
(nr_mac_process_mac_pdu() is called with such parameter in at least two
places), the error handling path calls continue skipping the accounting
of the current sub-pdu (pduP and pdu_len). This results in an infinite
loop. Fix by moving functionality into a separate function.

Fixes: 2e0493632d ("RLC data ind: single call for complete TB at gNB")
Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>
This commit is contained in:
Robert Schmidt
2026-04-08 14:24:00 +02:00
parent 447c0b211e
commit d93b0e13d2
1 changed files with 40 additions and 34 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
+40 -34
View File
@@ -226,6 +226,45 @@ static int estimate_ul_buffer_long_bsr(const NR_BSR_LONG *bsr)
return estim_size;
}
static void handle_single_entry_phr(const NR_UE_UL_BWP_t *ul_bwp,
NR_UE_sched_ctrl_t *sched_ctrl,
int harq_pid,
const NR_SINGLE_ENTRY_PHR_MAC_CE *phr)
{
if (harq_pid < 0) {
LOG_E(NR_MAC, "Invalid HARQ PID %d\n", harq_pid);
return;
}
NR_sched_pusch_t *sched_pusch = &sched_ctrl->ul_harq_processes[harq_pid].sched_pusch;
/* Save the phr info */
int PH;
const int PCMAX = phr->PCMAX;
/* 38.133 Table10.1.17.1-1 */
if (phr->PH < 55) {
PH = phr->PH - 32;
} else if (phr->PH < 63) {
PH = 24 + (phr->PH - 55) * 2;
} else {
PH = 38;
}
// in sched_ctrl we set normalized PH wrt MCS and PRBs
sched_ctrl->ph = PH + compute_ph_rb_factor(ul_bwp->scs, sched_pusch->rbSize);
bool hasDeltaMCS = ul_bwp->pusch_Config && ul_bwp->pusch_Config->pusch_PowerControl->deltaMCS;
if (hasDeltaMCS)
sched_ctrl->ph += compute_ph_mcs_factor(sched_pusch);
/* 38.133 Table10.1.18.1-1 */
sched_ctrl->pcmax = PCMAX - 29;
LOG_D(NR_MAC,
"SINGLE ENTRY PHR %d PH %d (%d dB) R2 %d PCMAX %d (%d dBm)\n",
phr->R1,
PH,
sched_ctrl->ph,
phr->R2,
PCMAX,
sched_ctrl->pcmax);
}
// For both UL-SCH except:
// - UL-SCH: fixed-size MAC CE(known by LCID)
// - UL-SCH: padding
@@ -510,43 +549,10 @@ static int nr_process_mac_pdu(instance_t module_idP,
break;
case UL_SCH_LCID_SINGLE_ENTRY_PHR:
if (harq_pid < 0) {
LOG_E(NR_MAC, "Invalid HARQ PID %d\n", harq_pid);
continue;
}
NR_sched_pusch_t *sched_pusch = &sched_ctrl->ul_harq_processes[harq_pid].sched_pusch;
/* Extract SINGLE ENTRY PHR elements for PHR calculation */
ce_ptr = &pduP[mac_subheader_len];
NR_SINGLE_ENTRY_PHR_MAC_CE *phr = (NR_SINGLE_ENTRY_PHR_MAC_CE *)ce_ptr;
/* Save the phr info */
int PH;
const int PCMAX = phr->PCMAX;
/* 38.133 Table10.1.17.1-1 */
if (phr->PH < 55) {
PH = phr->PH - 32;
} else if (phr->PH < 63) {
PH = 24 + (phr->PH - 55) * 2;
} else {
PH = 38;
}
// in sched_ctrl we set normalized PH wrt MCS and PRBs
sched_ctrl->ph = PH + compute_ph_rb_factor(ul_bwp->scs, sched_pusch->rbSize);
bool hasDeltaMCS = ul_bwp->pusch_Config && ul_bwp->pusch_Config->pusch_PowerControl->deltaMCS;
if (hasDeltaMCS)
sched_ctrl->ph += compute_ph_mcs_factor(sched_pusch);
/* 38.133 Table10.1.18.1-1 */
sched_ctrl->pcmax = PCMAX - 29;
LOG_D(NR_MAC,
"SINGLE ENTRY PHR %d.%d R1 %d PH %d (%d dB) R2 %d PCMAX %d (%d dBm)\n",
frameP,
slot,
phr->R1,
PH,
sched_ctrl->ph,
phr->R2,
PCMAX,
sched_ctrl->pcmax);
handle_single_entry_phr(ul_bwp, sched_ctrl, harq_pid, phr);
break;
case UL_SCH_LCID_C_RNTI: