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better handling of writeBlockSize greater than samples/slot

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fix the case when writeBlockSize is greater than samples/slot
by sending samples from the same buffer instead of out-of-bounds memory read
This commit is contained in:
Badescu, Ciprian
2024-12-11 13:01:50 +02:00
committed by Roberto Rosca
parent fc26b8c053
commit a049c53e99
1 changed files with 15 additions and 3 deletions
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executables/nr-ue.c
+15 -3
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@@ -483,11 +483,23 @@ static void RU_write(nr_rxtx_thread_data_t *rxtxD, bool sl_tx_action)
}
}
int tmp = openair0_write_reorder(&UE->rfdevice, proc->timestamp_tx, txp, rxtxD->writeBlockSize, fp->nb_antennas_tx, flags);
AssertFatal(tmp == rxtxD->writeBlockSize, "");
openair0_timestamp writeTimestamp = proc->timestamp_tx;
int writeBlockSize = rxtxD->writeBlockSize;
if ( writeBlockSize > fp->get_samples_per_slot(proc->nr_slot_tx, fp)) {
// if writeBlockSize gets longer that slot size, fill with dummy
const int dummyBlockSize = writeBlockSize - fp->get_samples_per_slot(proc->nr_slot_tx, fp);
int tmp = openair0_write_reorder(&UE->rfdevice, writeTimestamp, txp, dummyBlockSize, fp->nb_antennas_tx, flags);
AssertFatal(tmp == dummyBlockSize, "");
writeTimestamp += dummyBlockSize;
writeBlockSize -= dummyBlockSize;
}
int tmp = openair0_write_reorder(&UE->rfdevice, writeTimestamp, txp, writeBlockSize, fp->nb_antennas_tx, flags);
AssertFatal(tmp == writeBlockSize, "");
for (int i = 0; i < fp->nb_antennas_tx; i++)
memset(txp[i], 0, rxtxD->writeBlockSize);
memset(txp[i], 0, writeBlockSize);
}
void processSlotTX(void *arg)