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Implementation E1 Setup Failure (8.2.3.3 of 3GPP TS 38.463)

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- CU-CP replying to the CU-UP with a Setup Failure message in case of unsuccessfull E1 Setup Request
- message is decoded by the CU-UP, and stops the process
This commit is contained in:
Guido Casati
2024-01-25 17:10:48 +01:00
committed by Robert Schmidt
parent 47c069347d
commit 7faabc6b45
5 changed files with 67 additions and 7 deletions
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openair2/RRC/NR/rrc_gNB_cuup.c
+16 -1
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@@ -122,6 +122,19 @@ sctp_assoc_t get_new_cuup_for_ue(const gNB_RRC_INST *rrc, const gNB_RRC_UE_t *ue
return ue_data.e1_assoc_id;
}
static void e1ap_setup_failure(sctp_assoc_t assoc_id, uint64_t transac_id)
{
MessageDef *msg_p = itti_alloc_new_message(TASK_RRC_GNB, 0, E1AP_SETUP_FAIL);
msg_p->ittiMsgHeader.originInstance = assoc_id;
e1ap_setup_fail_t *setup_fail = &E1AP_SETUP_FAIL(msg_p);
setup_fail->transac_id = transac_id;
LOG_I(NR_RRC, "Triggering E1AP Setup Failure for transac_id %ld (%ld), assoc_id %ld\n",
transac_id,
E1AP_SETUP_FAIL(msg_p).transac_id,
msg_p->ittiMsgHeader.originInstance);
itti_send_msg_to_task(TASK_CUCP_E1, 0 /*unused by callee*/, msg_p);
}
int rrc_gNB_process_e1_setup_req(sctp_assoc_t assoc_id, e1ap_setup_req_t *req)
{
AssertFatal(req->supported_plmns <= PLMN_LIST_MAX_SIZE, "Supported PLMNs is more than PLMN_LIST_MAX_SIZE\n");
@@ -138,6 +151,7 @@ int rrc_gNB_process_e1_setup_req(sctp_assoc_t assoc_id, e1ap_setup_req_t *req)
c->setup_req->gNB_cu_up_id,
c->setup_req->gNB_cu_up_name,
c->assoc_id);
e1ap_setup_failure(assoc_id, req->transac_id);
return -1;
}
}
@@ -151,11 +165,12 @@ int rrc_gNB_process_e1_setup_req(sctp_assoc_t assoc_id, e1ap_setup_req_t *req)
id->mnc,
rrc->configuration.mcc[i],
rrc->configuration.mnc[i]);
e1ap_setup_failure(assoc_id, req->transac_id);
return -1;
}
}
LOG_I(RRC, "Accepting new CU-UP ID %ld name %s (assoc_id %d)\n", req->gNB_cu_up_id, req->gNB_cu_up_name, assoc_id);
LOG_I(NR_RRC, "Accepting new CU-UP ID %ld name %s (assoc_id %d)\n", req->gNB_cu_up_id, req->gNB_cu_up_name, assoc_id);
nr_rrc_cuup_container_t *cuup = malloc(sizeof(*cuup));
AssertFatal(cuup, "out of memory\n");
cuup->setup_req = malloc(sizeof(*cuup->setup_req));