Fix RA-Msg3 to logical channel CCCH

openair2/LAYER2/NR_MAC_COMMON/nr_mac.h

@@ -339,7 +339,6 @@ typedef struct {
 #define UL_SCH_LCID_SRB2                           0x02
 #define UL_SCH_LCID_SRB3                           0x03
 #define UL_SCH_LCID_DTCH                           0x04
-#define UL_SCH_LCID_CCCH_MSG3                      0x21
 #define UL_SCH_LCID_RECOMMENDED_BITRATE_QUERY      0x35
 #define UL_SCH_LCID_MULTI_ENTRY_PHR_4_OCT          0x36
 #define UL_SCH_LCID_CONFIGURED_GRANT_CONFIRMATION  0x37

openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c

@@ -513,7 +513,8 @@ uint8_t nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
   NR_UE_MAC_INST_t *mac = get_mac_inst(mod_id);
   RA_config_t *ra = &mac->ra;
   uint8_t mac_sdus[MAX_NR_ULSCH_PAYLOAD_BYTES];
-  uint8_t lcid = UL_SCH_LCID_CCCH_MSG3, *payload;
+  uint8_t lcid = UL_SCH_LCID_CCCH;
+  uint8_t *payload;
   uint16_t size_sdu = 0;
   unsigned short post_padding;
   NR_ServingCellConfigCommon_t *scc = mac->scc;

openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c

@@ -2066,8 +2066,9 @@ uint16_t nr_generate_ulsch_pdu(uint8_t *sdus_payload,
         last_size = 3;
       }
     } else { // UL CCCH SDU
-      mac_pdu_ptr->R = 0;
-      mac_pdu_ptr->LCID = sdu_lcids[i];
+      ((NR_MAC_SUBHEADER_FIXED *) mac_pdu_ptr)->R = 0;
+      ((NR_MAC_SUBHEADER_FIXED *) mac_pdu_ptr)->LCID = sdu_lcids[i];
+      last_size = 1;
     }
 
     mac_pdu_ptr += last_size;

openair2/RRC/NR/L2_nr_interface.c

@@ -303,4 +303,29 @@ int8_t mac_rrc_nr_data_req(const module_id_t Mod_idP,
 
   return(0);
 
+}
+
+int8_t nr_mac_rrc_data_ind(const module_id_t     module_idP,
+                           const int             CC_id,
+                           const frame_t         frameP,
+                           const sub_frame_t     sub_frameP,
+                           const int             UE_id,
+                           const rnti_t          rntiP,
+                           const rb_id_t         srb_idP,
+                           const uint8_t        *sduP,
+                           const sdu_size_t      sdu_lenP,
+                           const boolean_t   brOption) {
+
+  protocol_ctxt_t ctxt;
+  PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, module_idP, GNB_FLAG_YES, rntiP, frameP, sub_frameP,0);
+
+  if((srb_idP & RAB_OFFSET) == CCCH) {
+    LOG_D(NR_RRC, "[gNB %d] Received SDU for CCCH on SRB %ld\n", module_idP, srb_idP);
+    ctxt.brOption = brOption;
+    if (sdu_lenP > 0) {
+      nr_rrc_gNB_decode_ccch(&ctxt, sduP, sdu_lenP, CC_id);
+    }
+  }
+
+  return 0;
 }
\ No newline at end of file

openair2/RRC/NR/nr_rrc_proto.h

@@ -156,6 +156,24 @@ int
 nr_rrc_mac_remove_ue(module_id_t mod_idP,
                   rnti_t rntiP);
 
+int8_t nr_mac_rrc_data_ind(
+    const module_id_t     module_idP,
+    const int             CC_id,
+    const frame_t         frameP,
+    const sub_frame_t     sub_frameP,
+    const int             UE_id,
+    const rnti_t          rntiP,
+    const rb_id_t         srb_idP,
+    const uint8_t        *sduP,
+    const sdu_size_t      sdu_lenP,
+    const boolean_t   brOption
+);
+
+int nr_rrc_gNB_decode_ccch(protocol_ctxt_t    *const ctxt_pP,
+                           const uint8_t      *buffer,
+                           int                buffer_length,
+                           const int          CC_id);
+
 void
 rrc_gNB_generate_dedicatedRRCReconfiguration_release(
     const protocol_ctxt_t   *const ctxt_pP,

openair2/RRC/NR/rrc_gNB.c

@@ -1383,7 +1383,7 @@ int nr_rrc_gNB_decode_ccch(protocol_ctxt_t    *const ctxt_pP,
         break;
 
       case NR_UL_CCCH_MessageType__c1_PR_rrcSetupRequest:
-        LOG_I(NR_RRC, "Received RRCSetupRequest on UL-CCCH-Message (UE rnti %x)\n", ctxt_pP->rnti);
+        LOG_D(NR_RRC, "Received RRCSetupRequest on UL-CCCH-Message (UE rnti %x)\n", ctxt_pP->rnti);
         ue_context_p = rrc_gNB_get_ue_context(gnb_rrc_inst, ctxt_pP->rnti);
         if (ue_context_p != NULL) {
           rrc_gNB_free_mem_UE_context(ctxt_pP, ue_context_p);
@@ -1490,15 +1490,13 @@ int nr_rrc_gNB_decode_ccch(protocol_ctxt_t    *const ctxt_pP,
                                        CC_id);
             break;
           }
-        }
 
-        if (ue_context_p != NULL) {
           ue_context_p->ue_context.establishment_cause = rrcSetupRequest->establishmentCause;
-        }
 
-        rrc_gNB_generate_RRCSetup(ctxt_pP,
-                                  rrc_gNB_get_ue_context(gnb_rrc_inst, ctxt_pP->rnti),
-                                  CC_id);
+          rrc_gNB_generate_RRCSetup(ctxt_pP,
+                                    rrc_gNB_get_ue_context(gnb_rrc_inst, ctxt_pP->rnti),
+                                    CC_id);
+        }
         break;
 
       case NR_UL_CCCH_MessageType__c1_PR_rrcResumeRequest: