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/* NS Provider for NS/UDP/IP
* (C) 2020 Harald Welte <laforge@gnumonks.org>
* contributions by sysmocom - s.f.m.c. GmbH
* All rights reserved.
*
* 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 NS_Provider_IPL4 {
import from NS_Emulation all;
import from NS_Types all;
import from IPL4asp_Types all;
import from IPL4asp_PortType all;
type component NS_Provider_IPL4_CT extends NS_Provider_CT {
/* down-facing port towards IPL4asp to IUT */
port IPL4asp_PT IPL4;
var integer g_conn_id := -1;
};
function main(NSConfiguration config) runs on NS_Provider_IPL4_CT {
/* connect socket */
map(self:IPL4, system:IPL4);
var Result res := f_IPL4_connect(IPL4, config.provider.ip.remote_ip,
config.provider.ip.remote_udp_port,
config.provider.ip.local_ip,
config.provider.ip.local_udp_port, 0, { udp := {}});
if (not ispresent(res.connId)) {
setverdict(fail, "Could not connect NS UDP socket ", config.provider.ip);
mtc.stop;
}
g_conn_id := res.connId;
NSE.send(NS_Provider_Evt:{link_status := NS_PROV_LINK_STATUS_UP});
/* transceive beteween user-facing port and UDP socket */
while (true) {
var ASP_RecvFrom rx_rf;
var PDU_NS rx_pdu;
alt {
[] IPL4.receive(ASP_RecvFrom:?) -> value rx_rf {
NSE.send(dec_PDU_NS(rx_rf.msg));
}
[] IPL4.receive(ASP_ConnId_ReadyToRelease:?) {
}
[] IPL4.receive(ASP_Event:?) {
}
[] NSE.receive(PDU_NS:?) -> value rx_pdu {
IPL4.send(ASP_Send:{connId := g_conn_id, proto := { udp := {} }, msg := enc_PDU_NS(rx_pdu)});
}
} /* alt */
} /* while */
} /* main */
} /* module */
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