NS_Emulation: Add [optional] support for FrameRelay transport
This adds a NS_Provider_FR which interfaces between FrameRelay_Emulation and NS_Emulation. Include support for it only if enabled at compile time to avoid pulling in a dependency on the FrameRelay stack for every user of NS_Emulation. Change-Id: I42ca811d23e383e362d2527c8ff2c916a62a5b42
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@ -12,9 +12,12 @@
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module NS_Emulation {
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import from NS_Types all;
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import from BSSGP_Types all;
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import from Osmocom_Types all;
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import from Osmocom_Gb_Types all;
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import from NS_Provider_IPL4 all;
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import from Osmocom_Types all;
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#ifdef NS_EMULATION_FR
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import from NS_Provider_FR all;
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#endif
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import from IPL4asp_Types all;
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type record NsUnitdataRequest {
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@ -91,10 +94,18 @@ module NS_Emulation {
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private function f_init() runs on NS_CT {
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var Result res;
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/* Connect the UDP socket */
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vc_NSP_IP := NS_Provider_IPL4_CT.create;
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connect(self:NSCP, vc_NSP_IP:NSE);
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vc_NSP_IP.start(NS_Provider_IPL4.main(config));
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if (ischosen(config.provider.ip)) {
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/* Connect the UDP socket */
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vc_NSP_IP := NS_Provider_IPL4_CT.create;
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connect(self:NSCP, vc_NSP_IP:NSE);
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vc_NSP_IP.start(NS_Provider_IPL4.main(config));
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#ifdef NS_EMULATION_FR
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} else if (ischosen(config.provider.fr)) {
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vc_NSP_FR := NS_Provider_FR_CT.create;
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connect(self:NSCP, vc_NSP_FR:NSE);
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vc_NSP_FR.start(NS_Provider_FR.main(config));
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#endif
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}
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f_change_state(NSE_S_DEAD_BLOCKED);
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/* Send the first NS-ALIVE to test the connection */
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@ -118,6 +129,9 @@ module NS_Emulation {
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/* UDP port towards the bottom (IUT) */
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port NS_PROVIDER_PT NSCP;
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var NS_Provider_IPL4_CT vc_NSP_IP;
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#ifdef NS_EMULATION_FR
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var NS_Provider_FR_CT vc_NSP_FR;
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#endif
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/* NS-User SAP towards the user */
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port NS_SP_PT NS_SP;
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@ -138,8 +152,13 @@ module NS_Emulation {
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PortNumber remote_udp_port,
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charstring remote_ip
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};
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type record NSConfigurationFR {
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charstring netdev, /* HDLC net-device for AF_PACKET socket */
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integer dlci
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};
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type union NSConfigurationP {
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NSConfigurationIP ip
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NSConfigurationIP ip,
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NSConfigurationFR fr
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};
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type record NSConfiguration {
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NSConfigurationP provider,
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@ -0,0 +1,67 @@
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/* NS Provider for NS/FR/E1
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* (C) 2020 Harald Welte <laforge@gnumonks.org>
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* contributions by sysmocom - s.f.m.c. GmbH
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* All rights reserved.
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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 NS_Provider_FR {
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import from NS_Emulation all;
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import from NS_Types all;
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import from AF_PACKET_PortType all;
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import from FrameRelay_Types all;
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import from FrameRelay_Emulation all;
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type component NS_Provider_FR_CT extends NS_Provider_CT, FR_Client_CT {
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/* component reference to Frame Relay emulation */
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var FR_Emulation_CT vc_FREMU;
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};
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function main(NSConfiguration config) runs on NS_Provider_FR_CT system af_packet {
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/* start Frame Relay Emulation */
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vc_FREMU := FR_Emulation_CT.create();
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var Q933em_Config q933_cfg := valueof(ts_Q933em_Config(ats_is_user := not config.role_sgsn, bidirectional := false));
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map(vc_FREMU:FR, system:AF_PACKET) param (config.provider.fr.netdev);
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vc_FREMU.start(FrameRelay_Emulation.main(q933_cfg));
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/* connect ourselves to frame relay emulation */
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connect(self:FR, vc_FREMU:CLIENT);
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connect(self:FR_PROC, vc_FREMU:PROC);
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/* register ourselves for the specified DLCI */
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f_fremu_register(config.provider.fr.dlci);
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/* transceive between user-facing port and FR socket */
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while (true) {
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var FrameRelayFrame rx_fr;
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var FRemu_Event rx_frevt;
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var PDU_NS rx_pdu;
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alt {
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[] FR.receive(FrameRelayFrame:?) -> value rx_fr {
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NSE.send(dec_PDU_NS(rx_fr.payload));
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}
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[] FR.receive(FRemu_Event:?) -> value rx_frevt {
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/* TODO: dispatch to user */
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}
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[] NSE.receive(PDU_NS:?) -> value rx_pdu {
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FR.send(ts_FR(config.provider.fr.dlci, enc_PDU_NS(rx_pdu), true));
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}
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}
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}
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} /* main */
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} /* module */
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@ -51,7 +51,7 @@ gen_links $DIR $FILES
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DIR=../library
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FILES="Misc_Helpers.ttcn General_Types.ttcn Osmocom_VTY_Functions.ttcn Native_Functions.ttcn Native_FunctionDefs.cc GSM_Types.ttcn GSM_RR_Types.ttcn Osmocom_Types.ttcn RLCMAC_Templates.ttcn RLCMAC_Types.ttcn RLCMAC_CSN1_Templates.ttcn RLCMAC_CSN1_Types.ttcn RLCMAC_EncDec.cc "
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FILES+="StatsD_Types.ttcn StatsD_CodecPort.ttcn StatsD_CodecPort_CtrlFunct.ttcn StatsD_CodecPort_CtrlFunctdef.cc StatsD_Checker.ttcn "
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FILES+="NS_Provider_IPL4.ttcn NS_Emulation.ttcn NS_CodecPort.ttcn NS_CodecPort_CtrlFunct.ttcn NS_CodecPort_CtrlFunctDef.cc "
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FILES+="NS_Provider_IPL4.ttcn NS_Emulation.ttcnpp NS_CodecPort.ttcn NS_CodecPort_CtrlFunct.ttcn NS_CodecPort_CtrlFunctDef.cc "
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FILES+="BSSGP_Emulation.ttcnpp Osmocom_Gb_Types.ttcn "
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FILES+="LLC_Templates.ttcn L3_Templates.ttcn L3_Common.ttcn "
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FILES+="PCUIF_Types.ttcn PCUIF_CodecPort.ttcn RAW_NS.ttcn "
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@ -84,7 +84,7 @@ gen_links $DIR $FILES
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DIR=../library
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FILES="Misc_Helpers.ttcn General_Types.ttcn GSM_Types.ttcn GSM_RR_Types.ttcn Osmocom_Types.ttcn RLCMAC_Templates.ttcn RLCMAC_Types.ttcn RLCMAC_CSN1_Templates.ttcn RLCMAC_CSN1_Types.ttcn RLCMAC_EncDec.cc "
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FILES+="NS_Provider_IPL4.ttcn NS_Emulation.ttcn PCUIF_Types.ttcn NS_CodecPort.ttcn NS_CodecPort_CtrlFunct.ttcn NS_CodecPort_CtrlFunctDef.cc "
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FILES+="NS_Provider_IPL4.ttcn NS_Emulation.ttcnpp PCUIF_Types.ttcn NS_CodecPort.ttcn NS_CodecPort_CtrlFunct.ttcn NS_CodecPort_CtrlFunctDef.cc "
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FILES+="BSSGP_Emulation.ttcnpp Osmocom_Gb_Types.ttcn "
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FILES+="Osmocom_CTRL_Types.ttcn Osmocom_CTRL_Functions.ttcn Osmocom_CTRL_Adapter.ttcn "
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FILES+="Osmocom_VTY_Functions.ttcn "
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