| /* 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_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), |
| SBC_AP_Cause_message_accepted, |
| g_pars.write_repl_unknown_TAIs); |
| } else { |
| tx := ts_SBCAP_WRITE_WARNING_RESP(int2bit(msg.msg_id, 16), |
| int2bit(msg.ser_nr, 16)); |
| } |
| 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; |
| rx_templ := tr_SBCAP_WRITE_WARNING(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); |
| } |
| } |
| } |
| |
| } |