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Introduce separate gNB-CU-UP ID in configuration

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3GPP has the concept of a gNB-CU-UP ID and a (separate) gNB ID (for gNB,
CU-CP). This commit introduces the gNB-CU-UP as a separate ID that has to be
set in the configuration file when running as a CU-UP. For the
CU/monolithic gNB, it is optional (but needs to be the same as the
gNB-ID if specified).

The CU-UP ID is necessary, as some entities, e.g., the e2 agent, need to
signal both IDs, e.g., to reconcile a CU-CP and (multiple) CU-UP(s)
belonging together.
This commit is contained in:
Robert Schmidt
2023-11-30 08:06:16 +01:00
parent 6f14b11847
commit 79c920cd81
12 changed files with 47 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair2/E1AP/e1ap.c
+2 -2
View File
@@ -1801,7 +1801,7 @@ void cucp_task_send_sctp_init_req(instance_t instance, char *my_addr) {
void e1_task_handle_sctp_association_ind(E1_t type, instance_t instance, sctp_new_association_ind_t *sctp_new_ind)
{
if (!getCxtE1(instance))
createE1inst(type, instance, NULL, NULL);
createE1inst(type, instance, 0, NULL, NULL);
e1ap_upcp_inst_t *inst = getCxtE1(instance);
inst->sockState = SCTP_STATE_ESTABLISHED;
if (type == UPtype)
@@ -1897,7 +1897,7 @@ void *E1AP_CUUP_task(void *arg) {
switch (msgType) {
case E1AP_REGISTER_REQ: {
e1ap_register_req_t *reg_req = &E1AP_REGISTER_REQ(msg);
createE1inst(UPtype, myInstance, &reg_req->net_config, &reg_req->setup_req);
createE1inst(UPtype, myInstance, reg_req->gnb_id, &reg_req->net_config, &reg_req->setup_req);
e1_task_send_sctp_association_req(TASK_CUUP_E1, myInstance, &reg_req->net_config);
} break;
openair2/E1AP/e1ap_common.c
+2 -1
View File
@@ -37,12 +37,13 @@ e1ap_upcp_inst_t *getCxtE1(instance_t instance)
return e1ap_inst[instance];
}
void createE1inst(E1_t type, instance_t instance, e1ap_net_config_t *nc, e1ap_setup_req_t *req)
void createE1inst(E1_t type, instance_t instance, uint64_t gnb_id, e1ap_net_config_t *nc, e1ap_setup_req_t *req)
{
AssertFatal(e1ap_inst[instance] == NULL, "Double call to E1 instance %d\n", (int)instance);
e1ap_inst[instance] = calloc(1, sizeof(e1ap_upcp_inst_t));
e1ap_inst[instance]->type = type;
e1ap_inst[instance]->instance = instance;
e1ap_inst[instance]->gnb_id = gnb_id;
e1ap_inst[instance]->cuup.assoc_id = -1;
if (nc)
memcpy(&e1ap_inst[instance]->net_config, nc, sizeof(*nc));
openair2/E1AP/e1ap_common.h
+2 -1
View File
@@ -29,6 +29,7 @@
typedef struct e1ap_upcp_inst_s {
instance_t instance;
uint32_t gnb_id; // associated gNB's ID, unused in E1 but necessary for e.g. E2 agent
E1_t type;
enum sctp_state_e sockState;
struct {
@@ -52,7 +53,7 @@ e1ap_upcp_inst_t *getCxtE1(instance_t instance);
long E1AP_get_next_transaction_identifier();
void E1AP_free_transaction_identifier(long id);
void createE1inst(E1_t type, instance_t instance, e1ap_net_config_t *nc, e1ap_setup_req_t *req);
void createE1inst(E1_t type, instance_t instance, uint64_t gnb_id, e1ap_net_config_t *nc, e1ap_setup_req_t *req);
int e1ap_encode_send(E1_t type, sctp_assoc_t assoc_id, struct E1AP_E1AP_PDU *pdu, uint16_t stream, const char *func);
openair2/E1AP/e1ap_setup.c
+27 -7
View File
@@ -68,7 +68,7 @@ static void get_NGU_S1U_addr(char **addr, uint16_t *port)
return;
}
MessageDef *RCconfig_NR_CU_E1(bool separate_CUUP_process)
MessageDef *RCconfig_NR_CU_E1(const E1_t *entity)
{
MessageDef *msgConfig = itti_alloc_new_message(TASK_GNB_APP, 0, E1AP_REGISTER_REQ);
if (!msgConfig)
@@ -82,14 +82,12 @@ MessageDef *RCconfig_NR_CU_E1(bool separate_CUUP_process)
sprintf(aprefix, "%s.[%i]", GNB_CONFIG_STRING_GNB_LIST, 0);
int num_gnbs = GNBSParams[GNB_ACTIVE_GNBS_IDX].numelt;
AssertFatal(num_gnbs == 1, "Support only one gNB per process\n");
config_getlist(config_get_if(), &GNBParamList, GNBParams, sizeofArray(GNBParams), NULL);
paramdef_t *gnbParms = GNBParamList.paramarray[0];
e1ap_setup_req_t *e1Setup = &E1AP_REGISTER_REQ(msgConfig).setup_req;
if (num_gnbs > 0) {
config_getlist(config_get_if(), &GNBParamList, GNBParams, sizeofArray(GNBParams), NULL);
paramdef_t *gnbParms = GNBParamList.paramarray[0];
AssertFatal(gnbParms[GNB_GNB_ID_IDX].uptr != NULL, "gNB id %d is not defined in configuration file\n", 0);
e1ap_setup_req_t *e1Setup = &E1AP_REGISTER_REQ(msgConfig).setup_req;
msgConfig->ittiMsgHeader.destinationInstance = 0;
e1Setup->gNB_cu_up_id = *(gnbParms[GNB_GNB_ID_IDX].uptr);
if (*gnbParms[GNB_GNB_NAME_IDX].strptr)
e1Setup->gNB_cu_up_name = *(gnbParms[GNB_GNB_NAME_IDX].strptr);
@@ -132,7 +130,11 @@ MessageDef *RCconfig_NR_CU_E1(bool separate_CUUP_process)
get_NGU_S1U_addr(&e1ap_nc->localAddressN3, &e1ap_nc->localPortN3);
e1ap_nc->remotePortN3 = e1ap_nc->localPortN3 ;
if (separate_CUUP_process) {
AssertFatal(config_isparamset(gnbParms, GNB_GNB_ID_IDX), "%s is not defined in configuration file\n", GNB_CONFIG_STRING_GNB_ID);
uint32_t gnb_id = *gnbParms[GNB_GNB_ID_IDX].uptr;
E1AP_REGISTER_REQ(msgConfig).gnb_id = gnb_id;
if (entity != NULL) {
paramlist_def_t GNBE1ParamList = {GNB_CONFIG_STRING_E1_PARAMETERS, NULL, 0};
paramdef_t GNBE1Params[] = GNBE1PARAMS_DESC;
config_getlist(config_get_if(), &GNBE1ParamList, GNBE1Params, sizeofArray(GNBE1Params), aprefix);
@@ -141,6 +143,24 @@ MessageDef *RCconfig_NR_CU_E1(bool separate_CUUP_process)
e1ap_nc->CUCP_e1_ip_address.ipv4 = 1;
strcpy(e1ap_nc->CUUP_e1_ip_address.ipv4_address, *(e1Parms[GNB_CONFIG_E1_IPV4_ADDRESS_CUUP].strptr));
e1ap_nc->CUUP_e1_ip_address.ipv4 = 1;
if (*entity == CPtype) {
// CP needs gNB_ID (although not used, but other parts check it as
// well), and gNB-CU-UP ID should NOT be present as it comes through E1!
AssertFatal(!config_isparamset(gnbParms, GNB_GNB_CU_UP_ID_IDX), "%s must not be defined in configuration file\n", GNB_CONFIG_STRING_GNB_CU_UP_ID);
} else { // UPtype
AssertFatal(config_isparamset(gnbParms, GNB_GNB_CU_UP_ID_IDX), "%s is not be defined in configuration file\n", GNB_CONFIG_STRING_GNB_CU_UP_ID);
e1Setup->gNB_cu_up_id = *gnbParms[GNB_GNB_CU_UP_ID_IDX].u64ptr;
}
} else {
// integrated CU-CP/UP. We don't care about the gNB-CU-UP ID that much,
// but if it's there, check it's the same as gNB ID
uint64_t *gnb_cu_up_id = gnbParms[GNB_GNB_CU_UP_ID_IDX].u64ptr;
AssertFatal(!config_isparamset(gnbParms, GNB_GNB_CU_UP_ID_IDX) || *gnb_cu_up_id == gnb_id,
"%s is different of %s: they need to match or remove %s from config\n",
GNB_CONFIG_STRING_GNB_CU_UP_ID,
GNB_CONFIG_STRING_GNB_ID,
GNB_CONFIG_STRING_GNB_CU_UP_ID);
e1Setup->gNB_cu_up_id = gnb_id;
}
}
return msgConfig;