diff options
Diffstat (limited to 'src/hnbgw_ranap.c')
| -rw-r--r-- | src/hnbgw_ranap.c | 102 |
1 files changed, 60 insertions, 42 deletions
diff --git a/src/hnbgw_ranap.c b/src/hnbgw_ranap.c index c0b968f..1e38cf0 100644 --- a/src/hnbgw_ranap.c +++ b/src/hnbgw_ranap.c @@ -38,31 +38,16 @@ static int ranap_tx_reset_ack(struct hnb_context *hnb, RANAP_CN_DomainIndicator_t domain) { - RANAP_ResetAcknowledge_t out; - RANAP_ResetAcknowledgeIEs_t ies; struct msgb *msg; int rc; - memset(&ies, 0, sizeof(ies)); - ies.cN_DomainIndicator = domain; - - memset(&out, 0, sizeof(out)); - rc = ranap_encode_resetacknowledgeies(&out, &ies); - if (rc < 0) { - LOGP(DRANAP, LOGL_ERROR, "error encoding reset ack IEs: %d\n", rc); - return rc; - } - - msg = ranap_generate_successful_outcome(RANAP_ProcedureCode_id_Reset, - RANAP_Criticality_reject, - &asn_DEF_RANAP_ResetAcknowledge, - &out); + msg = ranap_new_msg_reset_ack(domain, NULL); if (!msg) return -1; - msg->dst = hnb; + rc = rua_tx_udt(hnb, msg->data, msgb_length(msg)); - rc = rua_tx_udt(msg); + msgb_free(msg); return rc; } @@ -110,26 +95,6 @@ int ranap_parse_lai(struct gprs_ra_id *ra_id, const RANAP_LAI_t *lai) return 0; } -static int ranap_rx_init_ue_msg(struct hnb_context *hnb, ANY_t *in) -{ - RANAP_InitialUE_MessageIEs_t ies; - struct gprs_ra_id ra_id; - int rc; - - rc = ranap_decode_initialue_messageies(&ies, in); - if (rc < 0) - return rc; - - /* location area ID of the serving cell */ - ranap_parse_lai(&ra_id, &ies.lai); - - DEBUGP(DMAIN, "%u-%u-%u: InitialUE: %s\n", ra_id.mcc, ra_id.mnc, - ra_id.lac, osmo_hexdump(ies.nas_pdu.buf, ies.nas_pdu.size)); - /* FIXME: hand NAS PDU into MSC */ - - return 0; -} - static int ranap_rx_dt(struct hnb_context *hnb, ANY_t *in) { RANAP_DirectTransferIEs_t ies; @@ -160,19 +125,66 @@ static int ranap_rx_initiating_msg(struct hnb_context *hnb, RANAP_InitiatingMess { int rc; + /* according tot the spec, we can primarily receive Overload, + * Reset, Reset ACK, Error Indication, reset Resource, Reset + * Resurce Acknowledge as connecitonless RANAP. There are some + * more messages regarding Information Transfer, Direct + * Information Transfer and Uplink Information Trnansfer that we + * can ignore. In either case, it is RANAP that we need to + * decode... */ switch (imsg->procedureCode) { case RANAP_ProcedureCode_id_Reset: + /* Reset request */ rc = ranap_rx_init_reset(hnb, &imsg->value); break; - case RANAP_ProcedureCode_id_InitialUE_Message: - rc = ranap_rx_init_ue_msg(hnb, &imsg->value); + case RANAP_ProcedureCode_id_OverloadControl: /* Overload ind */ break; - case RANAP_ProcedureCode_id_DirectTransfer: - rc = ranap_rx_dt(hnb, &imsg->value); + case RANAP_ProcedureCode_id_ErrorIndication: /* Error ind */ + break; + case RANAP_ProcedureCode_id_ResetResource: /* request */ + case RANAP_ProcedureCode_id_InformationTransfer: + case RANAP_ProcedureCode_id_DirectInformationTransfer: + case RANAP_ProcedureCode_id_UplinkInformationExchange: + LOGP(DRANAP, LOGL_NOTICE, "Received unsupported RANAP " + "Procedure %u from HNB, ignoring\n", imsg->procedureCode); + break; + default: + LOGP(DRANAP, LOGL_NOTICE, "Received suspicious RANAP " + "Procedure %u from HNB, ignoring\n", imsg->procedureCode); + break; + } +} + +static int ranap_rx_successful_msg(struct hnb_context *hnb, RANAP_SuccessfulOutcome_t *imsg) +{ + int rc; + + /* according tot the spec, we can primarily receive Overload, + * Reset, Reset ACK, Error Indication, reset Resource, Reset + * Resurce Acknowledge as connecitonless RANAP. There are some + * more messages regarding Information Transfer, Direct + * Information Transfer and Uplink Information Trnansfer that we + * can ignore. In either case, it is RANAP that we need to + * decode... */ + switch (imsg->procedureCode) { + case RANAP_ProcedureCode_id_Reset: /* Reset acknowledge */ + break; + case RANAP_ProcedureCode_id_ResetResource: /* response */ + case RANAP_ProcedureCode_id_InformationTransfer: + case RANAP_ProcedureCode_id_DirectInformationTransfer: + case RANAP_ProcedureCode_id_UplinkInformationExchange: + LOGP(DRANAP, LOGL_NOTICE, "Received unsupported RANAP " + "Procedure %u from HNB, ignoring\n", imsg->procedureCode); + break; + default: + LOGP(DRANAP, LOGL_NOTICE, "Received suspicious RANAP " + "Procedure %u from HNB, ignoring\n", imsg->procedureCode); break; } } + + static int _hnbgw_ranap_rx(struct hnb_context *hnb, RANAP_RANAP_PDU_t *pdu) { int rc; @@ -182,10 +194,16 @@ static int _hnbgw_ranap_rx(struct hnb_context *hnb, RANAP_RANAP_PDU_t *pdu) rc = ranap_rx_initiating_msg(hnb, &pdu->choice.initiatingMessage); break; case RANAP_RANAP_PDU_PR_successfulOutcome: + rc = ranap_rx_successful_msg(hnb, &pdu->choice.successfulOutcome); break; case RANAP_RANAP_PDU_PR_unsuccessfulOutcome: + LOGP(DRANAP, LOGL_NOTICE, "Received unsupported RANAP " + "unsuccessful outcome procedure %u from HNB, ignoring\n", + pdu->choice.unsuccessfulOutcome.procedureCode); break; default: + LOGP(DRANAP, LOGL_NOTICE, "Received suspicious RANAP " + "presence %u from HNB, ignoring\n", pdu->present); break; } } |