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Add rrc handling for F1 UE context setup response message at the CU and gtp-u tunnel update functionality

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-Remains to be tested
This commit is contained in:
matzakos
2021-09-06 14:44:53 +02:00
parent e942193824
commit 842bf6e346
3 changed files with 72 additions and 0 deletions
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openair2/RRC/NR/rrc_gNB.c
+52
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@@ -3172,6 +3172,57 @@ static void rrc_DU_process_ue_context_setup_request(MessageDef *msg_p, const cha
}
static void rrc_CU_process_ue_context_setup_response(MessageDef *msg_p, const char *msg_name, instance_t instance){
f1ap_ue_context_setup_resp_t * resp=&F1AP_UE_CONTEXT_SETUP_RESP(msg_p);
protocol_ctxt_t ctxt;
ctxt.rnti = resp->rnti;
ctxt.module_id = instance;
ctxt.instance = instance;
ctxt.enb_flag = 1;
gNB_RRC_INST *rrc = RC.nrrrc[ctxt.module_id];
struct rrc_gNB_ue_context_s *ue_context_p = rrc_gNB_get_ue_context(rrc, ctxt.rnti);
NR_CellGroupConfig_t *cellGroupConfig = NULL;
int i;
int j;
asn_dec_rval_t dec_rval = uper_decode_complete( NULL,
&asn_DEF_NR_CellGroupConfig,
(void **)&cellGroupConfig,
(uint8_t *)resp->du_to_cu_rrc_information,
(int) resp->du_to_cu_rrc_information_length);
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) {
AssertFatal(1==0,"Cell group config decode error\n");
// free the memory
SEQUENCE_free( &asn_DEF_NR_CellGroupConfig, cellGroupConfig, 1 );
return;
}
xer_fprint(stdout,&asn_DEF_NR_CellGroupConfig, cellGroupConfig);
if(ue_context_p->ue_context.masterCellGroup == NULL){
ue_context_p->ue_context.masterCellGroup = calloc(1, sizeof(NR_CellGroupConfig_t));
}
if(cellGroupConfig->rlc_BearerToAddModList!=NULL){
if(ue_context_p->ue_context.masterCellGroup->rlc_BearerToAddModList != NULL){
LOG_I(NR_RRC, "rlc_BearerToAddModList not empty before filling it \n");
free(ue_context_p->ue_context.masterCellGroup->rlc_BearerToAddModList);
}
ue_context_p->ue_context.masterCellGroup->rlc_BearerToAddModList = calloc(1, sizeof(cellGroupConfig->rlc_BearerToAddModList));
memcpy(ue_context_p->ue_context.masterCellGroup->rlc_BearerToAddModList, cellGroupConfig->rlc_BearerToAddModList,
sizeof(struct NR_CellGroupConfig__rlc_BearerToAddModList));
}
for(i=0; i<resp->drbs_setup_length; i++){
for(j=0; j<resp->drbs_setup[i].up_dl_tnl_length; j++){
GtpuUpdateTunnelOutgoingTeid(INSTANCE_DEFAULT, ue_context_p->ue_context.rnti, (ebi_t)resp->drbs_setup[i].drb_id, resp->drbs_setup[i].up_dl_tnl[j].teid);
}
}
free(cellGroupConfig->rlc_BearerToAddModList);
free(cellGroupConfig);
}
unsigned int mask_flip(unsigned int x) {
return((((x>>8) + (x<<8))&0xffff)>>6);
}
@@ -3672,6 +3723,7 @@ void *rrc_gnb_task(void *args_p) {
break;
case F1AP_UE_CONTEXT_SETUP_RESP:
rrc_CU_process_ue_context_setup_response(msg_p, msg_name_p, instance);
LOG_W(NR_RRC, "Handling of F1 UE context setup response context at the RRC layer of the CU is pending \n");
break;