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