Added a comment to justify pdu_len checks in gNB

2022-02-24 09:03:00 -08:00
parent 0165ffd160
commit 5f7f56f056
1 changed files with 4 additions and 0 deletions
@@ -261,6 +261,10 @@ int nr_process_mac_pdu(module_id_t module_idP,
        case UL_SCH_LCID_L_TRUNCATED_BSR:
        	//38.321 section 6.1.3.1
        	//variable length
+                /* Several checks have been added to this function to
+                   ensure that the casting of the pduP is possible. There
+                   is an actual bug here, but it has not been resolved. This
+                   means that the scheduled transport block size is invalid. */
                if (pdu_len < sizeof(NR_MAC_SUBHEADER_SHORT))
                        return 0;
        	mac_ce_len |= (uint16_t)((NR_MAC_SUBHEADER_SHORT *)pduP)->L;