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Add Bearer Context Release Command enc/dec lib and unit test

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This commit is contained in:
Guido Casati
2025-05-12 21:45:08 +02:00
parent 5c38a619ab
commit 3c8caeb9b2
3 changed files with 153 additions and 0 deletions
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openair2/E1AP/lib/e1ap_bearer_context_management.c
+105
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@@ -1189,6 +1189,111 @@ void free_e1_bearer_context_setup_failure(const e1ap_bearer_context_setup_failur
// do nothing
}
/* ===============================
* E1AP Bearer Context Release
* =============================== */
/** @brief Bearer Context Release Command encoding (9.2.2.9, 3GPP TS 38.463)
* gNB-CU-CP → gNB-CU-UP */
E1AP_E1AP_PDU_t *encode_e1_bearer_context_release_command(const e1ap_bearer_release_cmd_t *msg)
{
E1AP_E1AP_PDU_t *pdu = calloc_or_fail(1, sizeof(*pdu));
pdu->present = E1AP_E1AP_PDU_PR_initiatingMessage;
// Type (M)
asn1cCalloc(pdu->choice.initiatingMessage, type);
type->procedureCode = E1AP_ProcedureCode_id_bearerContextRelease;
type->criticality = E1AP_Criticality_reject;
type->value.present = E1AP_InitiatingMessage__value_PR_BearerContextReleaseCommand;
E1AP_BearerContextReleaseCommand_t *out = &pdu->choice.initiatingMessage->value.choice.BearerContextReleaseCommand;
// gNB-CU-CP UE E1AP ID (M)
asn1cSequenceAdd(out->protocolIEs.list, E1AP_BearerContextReleaseCommandIEs_t, ie1);
ie1->id = E1AP_ProtocolIE_ID_id_gNB_CU_CP_UE_E1AP_ID;
ie1->criticality = E1AP_Criticality_reject;
ie1->value.present = E1AP_BearerContextReleaseCommandIEs__value_PR_GNB_CU_CP_UE_E1AP_ID;
ie1->value.choice.GNB_CU_CP_UE_E1AP_ID = msg->gNB_cu_cp_ue_id;
// gNB-CU-UP UE E1AP ID (M)
asn1cSequenceAdd(out->protocolIEs.list, E1AP_BearerContextReleaseCommandIEs_t, ie2);
ie2->id = E1AP_ProtocolIE_ID_id_gNB_CU_UP_UE_E1AP_ID;
ie2->criticality = E1AP_Criticality_reject;
ie2->value.present = E1AP_BearerContextReleaseCommandIEs__value_PR_GNB_CU_UP_UE_E1AP_ID;
ie2->value.choice.GNB_CU_UP_UE_E1AP_ID = msg->gNB_cu_up_ue_id;
// Cause (M)
asn1cSequenceAdd(out->protocolIEs.list, E1AP_BearerContextReleaseCommandIEs_t, ie3);
ie3->id = E1AP_ProtocolIE_ID_id_Cause;
ie3->criticality = E1AP_Criticality_reject;
ie3->value.present = E1AP_BearerContextReleaseCommandIEs__value_PR_Cause;
ie3->value.choice.Cause = e1_encode_cause_ie(&msg->cause);
return pdu;
}
/** @brief Bearer Context Release Command decoding (9.2.2.9, 3GPP TS 38.463)
* gNB-CU-CP → gNB-CU-UP */
bool decode_e1_bearer_context_release_command(e1ap_bearer_release_cmd_t *out, const E1AP_E1AP_PDU_t *pdu)
{
DevAssert(pdu != NULL);
_E1_EQ_CHECK_INT(pdu->present, E1AP_E1AP_PDU_PR_initiatingMessage);
E1AP_InitiatingMessage_t *type = pdu->choice.initiatingMessage;
_E1_EQ_CHECK_LONG(type->procedureCode, E1AP_ProcedureCode_id_bearerContextRelease);
_E1_EQ_CHECK_INT(type->value.present, E1AP_InitiatingMessage__value_PR_BearerContextReleaseCommand);
const E1AP_BearerContextReleaseCommand_t *in = &type->value.choice.BearerContextReleaseCommand;
// Check mandatory IEs
E1AP_BearerContextReleaseCommandIEs_t *ie;
E1AP_LIB_FIND_IE(E1AP_BearerContextReleaseCommandIEs_t, ie, in, E1AP_ProtocolIE_ID_id_gNB_CU_CP_UE_E1AP_ID, true);
E1AP_LIB_FIND_IE(E1AP_BearerContextReleaseCommandIEs_t, ie, in, E1AP_ProtocolIE_ID_id_Cause, true);
E1AP_LIB_FIND_IE(E1AP_BearerContextReleaseCommandIEs_t, ie, in, E1AP_ProtocolIE_ID_id_gNB_CU_UP_UE_E1AP_ID, true);
for (int i = 0; i < in->protocolIEs.list.count; i++) {
ie = in->protocolIEs.list.array[i];
AssertFatal(ie != NULL, "in->protocolIEs.list.array[i] shall not be null");
switch (ie->id) {
case E1AP_ProtocolIE_ID_id_gNB_CU_CP_UE_E1AP_ID:
out->gNB_cu_cp_ue_id = ie->value.choice.GNB_CU_CP_UE_E1AP_ID;
break;
case E1AP_ProtocolIE_ID_id_gNB_CU_UP_UE_E1AP_ID:
out->gNB_cu_up_ue_id = ie->value.choice.GNB_CU_UP_UE_E1AP_ID;
break;
case E1AP_ProtocolIE_ID_id_Cause:
out->cause = e1_decode_cause_ie(&ie->value.choice.Cause);
break;
default:
PRINT_ERROR("%s decoding failure: IE %ld is invalid\n", __func__, ie->id)
return false;
break;
}
}
return true;
}
/** @brief Bearer Context Release Command equality check */
bool eq_bearer_context_release_command(const e1ap_bearer_release_cmd_t *a, const e1ap_bearer_release_cmd_t *b)
{
_E1_EQ_CHECK_INT(a->gNB_cu_cp_ue_id, b->gNB_cu_cp_ue_id);
_E1_EQ_CHECK_INT(a->gNB_cu_up_ue_id, b->gNB_cu_up_ue_id);
_E1_EQ_CHECK_INT(a->cause.type, b->cause.type);
_E1_EQ_CHECK_INT(a->cause.value, b->cause.value);
return true;
}
/** @brief Bearer Context Release Command deep copy */
e1ap_bearer_release_cmd_t cp_bearer_context_release_command(const e1ap_bearer_release_cmd_t *msg)
{
// Shallow copy only
e1ap_bearer_release_cmd_t cp = *msg;
return cp;
}
/** @brief Bearer Context Release Command equality check */
void free_e1_bearer_context_release_command(const e1ap_bearer_release_cmd_t *msg)
{
// do nothing
}
/* ============================================
* E1AP Bearer Context Modification Request
* ============================================ */
openair2/E1AP/lib/e1ap_bearer_context_management.h
+6
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@@ -46,6 +46,12 @@ e1ap_bearer_context_setup_failure_t cp_bearer_context_setup_failure(const e1ap_b
bool eq_bearer_context_setup_failure(const e1ap_bearer_context_setup_failure_t *a, const e1ap_bearer_context_setup_failure_t *b);
void free_e1_bearer_context_setup_failure(const e1ap_bearer_context_setup_failure_t *msg);
struct E1AP_E1AP_PDU *encode_e1_bearer_context_release_command(const e1ap_bearer_release_cmd_t *msg);
bool decode_e1_bearer_context_release_command(e1ap_bearer_release_cmd_t *out, const struct E1AP_E1AP_PDU *pdu);
bool eq_bearer_context_release_command(const e1ap_bearer_release_cmd_t *a, const e1ap_bearer_release_cmd_t *b);
e1ap_bearer_release_cmd_t cp_bearer_context_release_command(const e1ap_bearer_release_cmd_t *msg);
void free_e1_bearer_context_release_command(const e1ap_bearer_release_cmd_t *msg);
struct E1AP_E1AP_PDU *encode_E1_bearer_context_mod_request(const e1ap_bearer_mod_req_t *msg);
bool decode_E1_bearer_context_mod_request(const struct E1AP_E1AP_PDU *pdu, e1ap_bearer_mod_req_t *out);
void free_e1ap_context_mod_request(const e1ap_bearer_mod_req_t *msg);
openair2/E1AP/tests/e1ap_lib_test.c
+42
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@@ -265,6 +265,46 @@ static void test_bearer_context_setup_failure(void)
free_e1_bearer_context_setup_failure(&cp);
}
/** @brief Test E1AP Bearer Context Release Command encoding/decoding */
static void test_bearer_context_release_command(void)
{
e1ap_bearer_release_cmd_t orig = {
.gNB_cu_cp_ue_id = 0x1234,
.gNB_cu_up_ue_id = 0x5678,
.cause.type = E1AP_CAUSE_RADIO_NETWORK,
.cause.value = E1AP_RADIO_CAUSE_MULTIPLE_QOS_FLOW_ID_INSTANCES,
};
// Encode the original message
E1AP_E1AP_PDU_t *enc = encode_e1_bearer_context_release_command(&orig);
// E1AP decode the encoded message
E1AP_E1AP_PDU_t *dec = e1ap_encode_decode(enc);
// Free the E1AP encoded message
e1ap_msg_free(enc);
// Decode the encoded message
e1ap_bearer_release_cmd_t decoded = {0};
AssertFatal(decode_e1_bearer_context_release_command(&decoded, dec), "decode_e1_bearer_context_release_command failed");
// Free the E1AP decoded message
e1ap_msg_free(dec);
// Equality check original/decoded
AssertFatal(eq_bearer_context_release_command(&orig, &decoded), "eq_bearer_context_release_command: decoded message does not match original");
// Free the memory for the decoded message
free_e1_bearer_context_release_command(&decoded);
// Deep copy and equality check of the original message
e1ap_bearer_release_cmd_t cp = cp_bearer_context_release_command(&orig);
AssertFatal(eq_bearer_context_release_command(&orig, &cp), "eq_bearer_context_release_command(): copied message doesn't match\n");
// Cleanup
free_e1_bearer_context_release_command(&orig);
free_e1_bearer_context_release_command(&cp);
}
/**
* @brief Test CU-UP Setup Request encoding/decoding
@@ -675,5 +715,7 @@ int main()
test_bearer_context_modification_request();
test_bearer_context_modification_response();
test_bearer_context_modification_response_fail();
// Bearer Context Release
test_bearer_context_release_command();
return 0;
}