Pau Espin Pedrol | 4b090c9 | 2024-02-29 19:47:07 +0100 | [diff] [blame] | 1 | /* dual-faced port sitting on top of IPL4_asp UDP to encode/decode GTPv1-U |
| 2 | * (C) 2017 Harald Welte <laforge@gnumonks.org> |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Released under the terms of GNU General Public License, Version 2 or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 9 | */ |
| 10 | |
| 11 | |
| 12 | module GTPv1U_CodecPort { |
| 13 | import from IPL4asp_PortType all; |
| 14 | import from IPL4asp_Types all; |
| 15 | import from GTPU_Types all; |
| 16 | import from Misc_Helpers all; |
| 17 | |
| 18 | /* identifies a remote peer (sender or receiver) */ |
| 19 | type record Gtp1uPeer { |
| 20 | ConnectionId connId, |
| 21 | HostName remName, |
| 22 | PortNumber remPort |
| 23 | } |
| 24 | |
| 25 | /* Decoded GTP1U (User Plane), used in send and receive direction */ |
| 26 | type record Gtp1uUnitdata { |
| 27 | Gtp1uPeer peer, |
| 28 | PDU_GTPU gtpu |
| 29 | } |
| 30 | |
| 31 | /* dual-faced port on top of IPL4asp; ASP_Event passed through transparently */ |
| 32 | type port GTPU_PT message { |
| 33 | out Gtp1uUnitdata; |
| 34 | in Gtp1uUnitdata, |
| 35 | ASP_ConnId_ReadyToRelease, |
| 36 | ASP_Event; |
| 37 | } with { extension "user IPL4asp_PT |
| 38 | out(Gtp1uUnitdata -> ASP_SendTo: function(f_enc_Gtp1uUD)) |
| 39 | in(ASP_RecvFrom -> Gtp1uUnitdata: function(f_dec_Gtp1uUD); |
| 40 | ASP_ConnId_ReadyToRelease -> ASP_ConnId_ReadyToRelease: simple; |
| 41 | ASP_Event -> ASP_Event: simple)" } |
| 42 | |
| 43 | function f_enc_Gtp1uUD(in Gtp1uUnitdata in_ud, out ASP_SendTo out_ud) { |
| 44 | out_ud.connId := in_ud.peer.connId; |
| 45 | out_ud.remName := in_ud.peer.remName; |
| 46 | out_ud.remPort := in_ud.peer.remPort; |
| 47 | out_ud.proto := { udp := {} }; |
| 48 | out_ud.msg := enc_PDU_GTPU(in_ud.gtpu); |
| 49 | } with { extension "prototype(fast)" }; |
| 50 | |
| 51 | function f_dec_Gtp1uUD(in ASP_RecvFrom in_ud, out Gtp1uUnitdata out_ud) { |
| 52 | out_ud.peer.connId := in_ud.connId; |
| 53 | out_ud.peer.remName := in_ud.remName; |
| 54 | out_ud.peer.remPort := in_ud.remPort; |
| 55 | out_ud.gtpu := dec_PDU_GTPU(in_ud.msg); |
| 56 | } with { extension "prototype(fast)" }; |
| 57 | |
| 58 | } |