124 lines
3.5 KiB
Plaintext
124 lines
3.5 KiB
Plaintext
module CPF_ConnectionHandler {
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/* CPF Connection Handler of UPF_Tests in TTCN-3
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* (C) 2022 by sysmocom - s.m.f.c. GmbH <info@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 Misc_Helpers all;
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import from General_Types all;
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import from Osmocom_Types all;
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import from IPL4asp_Types all;
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import from Native_Functions all;
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import from StatsD_Checker all;
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import from TELNETasp_PortType all;
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import from Osmocom_VTY_Functions all;
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import from PFCP_Types all;
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import from PFCP_Emulation all;
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/* The system under test is a UPF (User Plane Function). This component represents a Control Plane Function, with a
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* single association via PFCP to the UPF (User Plane Function). */
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type component CPF_ConnHdlr extends StatsD_ConnHdlr {
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port PFCPEM_PT PFCP;
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port TELNETasp_PT UPFVTY;
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var PFCP_Emulation_CT vc_PFCP;
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var TestHdlrParams g_pars;
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var boolean g_vty_initialized := false;
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var integer g_recovery_timestamp;
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var integer g_next_seid_state;
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var integer g_next_local_teid_state;
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var integer g_next_remote_teid_state;
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var integer g_next_ue_addr_state;
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}
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function f_next_seid() runs on CPF_ConnHdlr return OCT8 {
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g_next_seid_state := g_next_seid_state + 1;
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return int2oct(g_next_seid_state, 8);
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}
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function f_next_local_teid() runs on CPF_ConnHdlr return OCT4 {
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g_next_local_teid_state := g_next_local_teid_state + 1;
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return int2oct(g_next_local_teid_state, 4);
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}
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function f_next_remote_teid() runs on CPF_ConnHdlr return OCT4 {
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g_next_remote_teid_state := g_next_remote_teid_state + 1;
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return int2oct(g_next_remote_teid_state, 4);
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}
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function f_next_ue_addr() runs on CPF_ConnHdlr return charstring {
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g_next_ue_addr_state := g_next_ue_addr_state + 1;
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if (g_next_ue_addr_state > 254) {
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g_next_ue_addr_state := 16;
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}
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return "192.168.44." & int2str(g_next_ue_addr_state);
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}
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function f_CPF_ConnHdlr_init_vty() runs on CPF_ConnHdlr {
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if (not g_vty_initialized) {
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map(self:UPFVTY, system:UPFVTY);
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f_vty_set_prompts(UPFVTY);
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f_vty_transceive(UPFVTY, "enable");
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g_vty_initialized := true;
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}
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}
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private function f_CPF_ConnHdlr_init_pfcp(charstring id) runs on CPF_ConnHdlr {
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id := id & "-PFCP";
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g_recovery_timestamp := f_rnd_int(4294967295);
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g_next_seid_state := (1 + f_rnd_int(65534)) * 65536;
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g_next_local_teid_state := (1 + f_rnd_int(65534)) * 65536;
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g_next_remote_teid_state := (1 + f_rnd_int(65534)) * 65536;
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g_next_ue_addr_state := (1 + f_rnd_int(15)) * 16;
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var PFCP_Emulation_Cfg pfcp_cfg := {
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pfcp_bind_ip := g_pars.local_addr,
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pfcp_bind_port := g_pars.local_port,
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pfcp_remote_ip := g_pars.remote_upf_addr,
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pfcp_remote_port := g_pars.remote_upf_port,
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role := CPF
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};
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vc_PFCP := PFCP_Emulation_CT.create(id) alive;
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connect(self:PFCP, vc_PFCP:CLIENT);
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vc_PFCP.start(PFCP_Emulation.main(pfcp_cfg));
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}
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/* initialize all parameters */
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function f_CPF_ConnHdlr_init(charstring id, TestHdlrParams pars) runs on CPF_ConnHdlr {
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g_pars := valueof(pars);
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f_CPF_ConnHdlr_init_pfcp(id);
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f_CPF_ConnHdlr_init_vty();
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}
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type record TestHdlrParams {
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charstring remote_upf_addr,
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integer remote_upf_port,
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charstring local_addr,
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integer local_port,
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Node_ID local_node_id
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};
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/* Note: Do not use valueof() to get a value of this template, use
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* f_gen_test_hdlr_pars() instead in order to get a configuration. */
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template (value) TestHdlrParams t_def_TestHdlrPars := {
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remote_upf_addr := "127.0.0.1",
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remote_upf_port := 8805,
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local_addr := "127.0.0.2",
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local_port := 8805
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}
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}
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