142 lines
3.4 KiB
Plaintext
142 lines
3.4 KiB
Plaintext
module Iuh_CodecPort {
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/* Simple Iuh Codec Port, translating between raw SCTP primitives with
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* octetstring payload towards the IPL4asp provider, and Iuh primitives
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* which carry the decoded Iuh data types as payload.
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*
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* (C) 2021 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
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* Author: Pau Espin Pedrol <pespin@sysmocom.de>
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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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import from IPL4asp_PortType all;
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import from IPL4asp_Types all;
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import from HNBAP_PDU_Descriptions all;
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import from HNBAP_Types all;
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import from RUA_PDU_Descriptions all;
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import from RUA_Types all;
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import from Iuh_Types all;
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type record Iuh_RecvFrom {
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ConnectionId connId,
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HostName remName,
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PortNumber remPort,
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HostName locName,
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PortNumber locPort,
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Iuh_PDU msg
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};
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template Iuh_RecvFrom t_Iuh_RecvFrom(template Iuh_PDU msg) := {
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connId := ?,
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remName := ?,
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remPort := ?,
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locName := ?,
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locPort := ?,
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msg := msg
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}
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template Iuh_RecvFrom t_Iuh_RecvFrom_HNBAP(template HNBAP_PDU hnbap_msg := ?) := {
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connId := ?,
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remName := ?,
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remPort := ?,
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locName := ?,
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locPort := ?,
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msg := {
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hnbap := hnbap_msg
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}
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}
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template Iuh_RecvFrom t_Iuh_RecvFrom_RUA(template RUA_PDU rua_msg := ?) := {
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connId := ?,
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remName := ?,
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remPort := ?,
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locName := ?,
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locPort := ?,
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msg := {
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rua := rua_msg
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}
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}
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type record Iuh_Send {
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ConnectionId connId,
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Iuh_PDU msg
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};
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template Iuh_Send t_Iuh_Send_HNBAP(template ConnectionId connId, template HNBAP_PDU hnbap_msg) := {
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connId := connId,
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msg := {
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hnbap := hnbap_msg
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}
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}
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template Iuh_Send t_Iuh_Send_RUA(template ConnectionId connId, template RUA_PDU rua_msg) := {
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connId := connId,
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msg := {
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rua := rua_msg
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}
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}
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private function IPL4_to_Iuh_RecvFrom(in ASP_RecvFrom pin, out Iuh_RecvFrom pout) {
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pout.connId := pin.connId;
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pout.remName := pin.remName;
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pout.remPort := pin.remPort;
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pout.locName := pin.locName;
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pout.locPort := pin.locPort;
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select (pin.proto.sctp.sinfo_ppid) {
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case (19) {
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pout.msg.rua := dec_RUA_PDU(pin.msg);
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}
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case (20) {
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pout.msg.hnbap := dec_HNBAP_PDU(pin.msg);
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}
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case (0) {
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/* FIXME: lower layers report sinfo_ppid=0: */
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pout.msg.hnbap := dec_HNBAP_PDU(pin.msg);
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}
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case else {
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pout.msg.payload := pin.msg;
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}
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}
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} with { extension "prototype(fast)" };
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private function Iuh_to_IPL4_Send(in Iuh_Send pin, out ASP_Send pout) {
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var integer sctp_ppid;
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if (ischosen(pin.msg.rua)) {
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sctp_ppid := 19;
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pout.msg := enc_RUA_PDU(pin.msg.rua);
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} else if (ischosen(pin.msg.hnbap)) {
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sctp_ppid := 20;
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pout.msg := enc_HNBAP_PDU(pin.msg.hnbap);
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} else { /*TODO: abort?*/
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sctp_ppid := 0;
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pout.msg := pin.msg.payload;
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}
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pout.connId := pin.connId;
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pout.proto := {
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sctp := {
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sinfo_stream := omit,
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sinfo_ppid := sctp_ppid,
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remSocks := omit,
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assocId := omit
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}
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};
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} with { extension "prototype(fast)" };
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type port Iuh_CODEC_PT message {
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out Iuh_Send;
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in Iuh_RecvFrom,
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ASP_ConnId_ReadyToRelease,
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ASP_Event;
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} with { extension "user IPL4asp_PT
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out(Iuh_Send -> ASP_Send:function(Iuh_to_IPL4_Send))
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in(ASP_RecvFrom -> Iuh_RecvFrom: function(IPL4_to_Iuh_RecvFrom);
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ASP_ConnId_ReadyToRelease -> ASP_ConnId_ReadyToRelease: simple;
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ASP_Event -> ASP_Event: simple)"
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}
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}
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