T2: Fix buffer overflow and HARQ codeblock ID out of range

- set size of buffers to max E
- change HARQ codeblock offset calculation for T2
- add constant for maximum code block size - max E

openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder_offload.c

@@ -543,8 +543,8 @@ set_ldpc_dec_op(struct rte_bbdev_dec_op **ops, unsigned int n,
     }
     LOG_D(PHY,"ULSCH %02d HARQPID %02d R %02d COMBIN %d RV %d NCB %05d \n", ulsch_id, harq_pid, r, p_offloadParams->setCombIn, p_offloadParams->rv, p_offloadParams->n_cb);
     ops[i]->ldpc_dec.code_block_mode = 1; // ldpc_dec->code_block_mode;
-    ops[i]->ldpc_dec.harq_combined_input.offset = ulsch_id * (32 * 1024 * 1024) + harq_pid * (2 * 1024 * 1024) + r * (1024 * 32);
-    ops[i]->ldpc_dec.harq_combined_output.offset = ulsch_id * (32 * 1024 * 1024) + harq_pid * (2 * 1024 * 1024) + r * (1024 * 32);
+    ops[i]->ldpc_dec.harq_combined_input.offset = ulsch_id * 64 * LDPC_MAX_CB_SIZE + r * LDPC_MAX_CB_SIZE;
+    ops[i]->ldpc_dec.harq_combined_output.offset = ulsch_id * 64 * LDPC_MAX_CB_SIZE  + r * LDPC_MAX_CB_SIZE;
     if (bufs->hard_outputs != NULL)
       ops[i]->ldpc_dec.hard_output = bufs->hard_outputs[start_idx + i];
     if (bufs->inputs != NULL)
@@ -968,7 +968,7 @@ int32_t LDPCinit()
 
   int socket_id = GET_SOCKET(info.socket_id);
   int out_max_sz = 8448; // max code block size (for BG1), 22 * 384
-  int in_max_sz = 25344; // max number of encoded bits (for BG1), 66 * 384
+  int in_max_sz = LDPC_MAX_CB_SIZE; // max number of encoded bits (for BG2 and MCS0)
   int num_ops = 1;
   int f_ret = create_mempools(ad, socket_id, num_ops, out_max_sz, in_max_sz);
   if (f_ret != TEST_SUCCESS) {

openair1/PHY/CODING/nrLDPC_extern.h

@@ -21,7 +21,8 @@
 #ifndef _NRLDPC_EXTERN_H__
 #define _NRLDPC_EXTERN_H__
 #include "openair1/PHY/CODING/nrLDPC_defs.h"
-
+/* LDPC maximum code block size - maximum E */
+#define LDPC_MAX_CB_SIZE 32768
 /* ldpc coder/decoder API*/
 typedef struct ldpc_interface_s {
   LDPC_initfunc_t *LDPCinit;

openair1/PHY/NR_TRANSPORT/nr_ulsch_decoding.c

@@ -232,8 +232,8 @@ int decode_offload(PHY_VARS_gNB *phy_vars_gNB,
 {
   NR_gNB_ULSCH_t *ulsch = &phy_vars_gNB->ulsch[ULSCH_id];
   NR_UL_gNB_HARQ_t *harq_process = ulsch->harq_process;
-  int16_t z_ol[68 * 384 + 16] __attribute__((aligned(16)));
-  int8_t l_ol[68 * 384 + 16] __attribute__((aligned(16)));
+  int16_t z_ol[LDPC_MAX_CB_SIZE] __attribute__((aligned(16)));
+  int8_t l_ol[LDPC_MAX_CB_SIZE] __attribute__((aligned(16)));
   uint8_t Qm = pusch_pdu->qam_mod_order;
   uint8_t n_layers = pusch_pdu->nrOfLayers;
   const int Kr = harq_process->K;