147 lines
4.6 KiB
Plaintext
147 lines
4.6 KiB
Plaintext
/* MME (SBc-AP) Connection Handler of CBC test suite in TTCN-3
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* (C) 2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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* All rights reserved.
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*
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* Author: Pau Espin Pedrol <pespin@sysmocom.de>
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*
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* Released under the terms of GNU General Public License, Version 2 or
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* (at your option) any later version.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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module MME_ConnectionHandler {
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import from SBC_AP_IEs all;
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import from SBC_AP_Constants all;
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import from SBC_AP_PDU_Contents all;
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import from SBC_AP_PDU_Descriptions all;
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import from SBC_AP_Types all;
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import from SBC_AP_Templates all;
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import from SBC_AP_CodecPort all;
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import from SBC_AP_Adapter all;
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import from CBS_Message all;
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type function void_fn() runs on MME_ConnHdlr;
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/* Coordinate with test_CT: */
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type port MME_ConnHdlr_Coord_PT message {
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inout charstring;
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} with { extension "internal" };
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/* this component represents a single subscriber connection */
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type component MME_ConnHdlr extends SBC_AP_Adapter_CT {
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var MME_ConnHdlrPars g_pars;
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port MME_ConnHdlr_Coord_PT COORD;
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}
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type record MME_ConnHdlrPars {
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charstring mme_host,
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integer mme_sbcap_port,
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charstring cbc_host,
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integer cbc_sbcap_port,
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boolean sctp_is_client,
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void_fn start_fn,
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CBS_Message exp_cbs_msg optional,
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SBC_AP_Cause write_replace_warning_req_cause,
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SBC_AP_Cause write_replace_warning_ind_cause optional,
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List_of_TAIs write_repl_unknown_TAIs optional,
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CellId_Broadcast_List bcast_cell_id_list optional
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};
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function f_MME_ConnHdlr_main(charstring id, MME_ConnHdlrPars pars) runs on MME_ConnHdlr {
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g_pars := pars;
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if (g_pars.sctp_is_client) {
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SBC_AP_Adapter.f_connect(g_pars.cbc_host, g_pars.cbc_sbcap_port,
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g_pars.mme_host, g_pars.mme_sbcap_port);
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} else {
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SBC_AP_Adapter.f_bind(g_pars.mme_host, g_pars.mme_sbcap_port);
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SBC_AP_Adapter.f_wait_client_connect();
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}
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COORD.send(COORD_MSG_CONNECTED);
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g_pars.start_fn.apply();
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}
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function f_sbcap_tx_write_replace_warn_resp(CBS_Message msg, integer idx := 0)
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runs on MME_ConnHdlr {
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var template (value) SBC_AP_PDU tx;
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if (ispresent(g_pars.write_repl_unknown_TAIs)) {
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tx := ts_SBCAP_WRITE_WARNING_RESP_UNKNOWN_TAI(
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int2bit(msg.msg_id, 16),
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int2bit(msg.ser_nr, 16),
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g_pars.write_replace_warning_req_cause,
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g_pars.write_repl_unknown_TAIs);
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} else {
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tx := ts_SBCAP_WRITE_WARNING_RESP(int2bit(msg.msg_id, 16),
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int2bit(msg.ser_nr, 16),
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g_pars.write_replace_warning_req_cause);
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}
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f_SBC_AP_send(tx, idx);
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}
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function f_sbcap_tx_write_replace_warn_ind(integer idx := 0, CBS_Message msg,
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SBC_AP_Cause cause,
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template (value) CellId_Broadcast_List bcast_cell_id_li)
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runs on MME_ConnHdlr {
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var template (value) SBC_AP_PDU tx;
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tx := ts_SBCAP_WRITE_WARNING_IND(int2bit(msg.msg_id, 16),
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int2bit(msg.ser_nr, 16),
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cause, bcast_cell_id_li);
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f_SBC_AP_send(tx, idx);
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}
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function f_sbcap_tx_stop_warn_resp(integer idx := 0, CBS_Message msg)
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runs on MME_ConnHdlr {
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var template (value) SBC_AP_PDU tx;
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tx := ts_SBCAP_STOP_WARNING_RESP(int2bit(msg.msg_id, 16),
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int2bit(msg.ser_nr, 16));
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f_SBC_AP_send(tx, idx);
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}
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/* handle a SBc-AP Write-Replace Request and respond to it with Response or FAILURE depending on arguments */
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function f_sbcap_handle_write_replace_warn_req(CBS_Message msg, integer idx := 0)
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runs on MME_ConnHdlr {
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var template (present) SBC_AP_PDU rx_templ;
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var SBC_AP_RecvFrom rf;
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if (msg_id_is_etws(msg.msg_id)) {
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rx_templ := tr_SBCAP_WRITE_WARNING_REQ_ETWS(
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int2bit(msg.msg_id, 16), int2bit(msg.ser_nr, 16),
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msg.rep_period, msg.num_bcast_req, hex2oct('018'H & int2hex(msg.msg_id - 4352, 1)));
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} else {
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rx_templ := tr_SBCAP_WRITE_WARNING_REQ_CBS(
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int2bit(msg.msg_id, 16), int2bit(msg.ser_nr, 16),
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msg.rep_period, msg.num_bcast_req);
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}
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alt {
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[] SBC_AP[idx].receive(tr_SBC_AP_Recv(g_SBC_AP_conn_id[idx], rx_templ)) -> value rf {
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log ("received expected req:", rf);
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f_sbcap_tx_write_replace_warn_resp(msg, idx);
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}
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[] SBC_AP[idx].receive {
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setverdict(fail, "Received unexpected SBc-AP in index ", idx);
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}
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}
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}
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/* handle a SBc-AP Stop-Warning-Request and respond to it with Response or FAILURE depending on arguments */
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function f_sbcap_handle_stop_warn_req(integer idx := 0, CBS_Message msg)
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runs on MME_ConnHdlr {
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var template (present) SBC_AP_PDU rx_templ;
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var SBC_AP_RecvFrom rf;
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rx_templ := tr_SBCAP_STOP_WARNING(int2bit(msg.msg_id, 16),
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int2bit(msg.ser_nr, 16));
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alt {
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[] SBC_AP[idx].receive(tr_SBC_AP_Recv(g_SBC_AP_conn_id[idx], rx_templ)) -> value rf {
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log ("received expected req:", rf);
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f_sbcap_tx_stop_warn_resp(idx, msg);
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}
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[] SBC_AP[idx].receive {
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setverdict(fail, "Received unexpected SBc-AP in index ", idx);
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}
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}
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}
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}
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