diff options
Diffstat (limited to 'cbc/MME_ConnectionHandler.ttcn')
| -rw-r--r-- | cbc/MME_ConnectionHandler.ttcn | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/cbc/MME_ConnectionHandler.ttcn b/cbc/MME_ConnectionHandler.ttcn new file mode 100644 index 00000000..4ab30c64 --- /dev/null +++ b/cbc/MME_ConnectionHandler.ttcn @@ -0,0 +1,146 @@ +/* MME (SBc-AP) Connection Handler of CBC test suite in TTCN-3 + * (C) 2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de> + * All rights reserved. + * + * Author: Pau Espin Pedrol <pespin@sysmocom.de> + * + * Released under the terms of GNU General Public License, Version 2 or + * (at your option) any later version. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +module MME_ConnectionHandler { + +import from SBC_AP_IEs all; +import from SBC_AP_Constants all; +import from SBC_AP_PDU_Contents all; +import from SBC_AP_PDU_Descriptions all; +import from SBC_AP_Types all; +import from SBC_AP_Templates all; +import from SBC_AP_CodecPort all; +import from SBC_AP_Adapter all; + +import from CBS_Message all; + +type function void_fn() runs on MME_ConnHdlr; + +/* Coordinate with test_CT: */ +type port MME_ConnHdlr_Coord_PT message { + inout charstring; +} with { extension "internal" }; + +/* this component represents a single subscriber connection */ +type component MME_ConnHdlr extends SBC_AP_Adapter_CT { + var MME_ConnHdlrPars g_pars; + port MME_ConnHdlr_Coord_PT COORD; +} + +type record MME_ConnHdlrPars { + charstring mme_host, + integer mme_sbcap_port, + charstring cbc_host, + integer cbc_sbcap_port, + boolean sctp_is_client, + void_fn start_fn, + CBS_Message exp_cbs_msg optional, + SBC_AP_Cause write_replace_warning_req_cause, + SBC_AP_Cause write_replace_warning_ind_cause optional, + List_of_TAIs write_repl_unknown_TAIs optional, + CellId_Broadcast_List bcast_cell_id_list optional +}; + +function f_MME_ConnHdlr_main(charstring id, MME_ConnHdlrPars pars) runs on MME_ConnHdlr { + g_pars := pars; + if (g_pars.sctp_is_client) { + SBC_AP_Adapter.f_connect(g_pars.cbc_host, g_pars.cbc_sbcap_port, + g_pars.mme_host, g_pars.mme_sbcap_port); + } else { + SBC_AP_Adapter.f_bind(g_pars.mme_host, g_pars.mme_sbcap_port); + SBC_AP_Adapter.f_wait_client_connect(); + } + COORD.send(COORD_MSG_CONNECTED); + g_pars.start_fn.apply(); +} + +function f_sbcap_tx_write_replace_warn_resp(CBS_Message msg, integer idx := 0) +runs on MME_ConnHdlr { + var template (value) SBC_AP_PDU tx; + if (ispresent(g_pars.write_repl_unknown_TAIs)) { + tx := ts_SBCAP_WRITE_WARNING_RESP_UNKNOWN_TAI( + int2bit(msg.msg_id, 16), + int2bit(msg.ser_nr, 16), + g_pars.write_replace_warning_req_cause, + g_pars.write_repl_unknown_TAIs); + } else { + tx := ts_SBCAP_WRITE_WARNING_RESP(int2bit(msg.msg_id, 16), + int2bit(msg.ser_nr, 16), + g_pars.write_replace_warning_req_cause); + } + f_SBC_AP_send(tx, idx); +} + +function f_sbcap_tx_write_replace_warn_ind(integer idx := 0, CBS_Message msg, + SBC_AP_Cause cause, + template (value) CellId_Broadcast_List bcast_cell_id_li) +runs on MME_ConnHdlr { + var template (value) SBC_AP_PDU tx; + tx := ts_SBCAP_WRITE_WARNING_IND(int2bit(msg.msg_id, 16), + int2bit(msg.ser_nr, 16), + cause, bcast_cell_id_li); + f_SBC_AP_send(tx, idx); +} + +function f_sbcap_tx_stop_warn_resp(integer idx := 0, CBS_Message msg) +runs on MME_ConnHdlr { + var template (value) SBC_AP_PDU tx; + tx := ts_SBCAP_STOP_WARNING_RESP(int2bit(msg.msg_id, 16), + int2bit(msg.ser_nr, 16)); + f_SBC_AP_send(tx, idx); +} + +/* handle a SBc-AP Write-Replace Request and respond to it with Response or FAILURE depending on arguments */ +function f_sbcap_handle_write_replace_warn_req(CBS_Message msg, integer idx := 0) +runs on MME_ConnHdlr { + var template (present) SBC_AP_PDU rx_templ; + var SBC_AP_RecvFrom rf; + if (msg_id_is_etws(msg.msg_id)) { + rx_templ := tr_SBCAP_WRITE_WARNING_REQ_ETWS( + int2bit(msg.msg_id, 16), int2bit(msg.ser_nr, 16), + msg.rep_period, msg.num_bcast_req, hex2oct('018'H & int2hex(msg.msg_id - 4352, 1))); + } else { + rx_templ := tr_SBCAP_WRITE_WARNING_REQ_CBS( + int2bit(msg.msg_id, 16), int2bit(msg.ser_nr, 16), + msg.rep_period, msg.num_bcast_req); + } + alt { + [] SBC_AP[idx].receive(tr_SBC_AP_Recv(g_SBC_AP_conn_id[idx], rx_templ)) -> value rf { + log ("received expected req:", rf); + f_sbcap_tx_write_replace_warn_resp(msg, idx); + } + [] SBC_AP[idx].receive { + setverdict(fail, "Received unexpected SBc-AP in index ", idx); + } + } +} + +/* handle a SBc-AP Stop-Warning-Request and respond to it with Response or FAILURE depending on arguments */ +function f_sbcap_handle_stop_warn_req(integer idx := 0, CBS_Message msg) +runs on MME_ConnHdlr { + var template (present) SBC_AP_PDU rx_templ; + var SBC_AP_RecvFrom rf; + + rx_templ := tr_SBCAP_STOP_WARNING(int2bit(msg.msg_id, 16), + int2bit(msg.ser_nr, 16)); + alt { + [] SBC_AP[idx].receive(tr_SBC_AP_Recv(g_SBC_AP_conn_id[idx], rx_templ)) -> value rf { + log ("received expected req:", rf); + f_sbcap_tx_stop_warn_resp(idx, msg); + } + [] SBC_AP[idx].receive { + setverdict(fail, "Received unexpected SBc-AP in index ", idx); + } + } +} + +} |