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Diffstat (limited to 'upf/CPF_ConnectionHandler.ttcn')
| -rw-r--r-- | upf/CPF_ConnectionHandler.ttcn | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/upf/CPF_ConnectionHandler.ttcn b/upf/CPF_ConnectionHandler.ttcn new file mode 100644 index 00000000..b5945d3f --- /dev/null +++ b/upf/CPF_ConnectionHandler.ttcn @@ -0,0 +1,118 @@ +module CPF_ConnectionHandler { + +/* CPF Connection Handler of UPF_Tests in TTCN-3 + * (C) 2022 by sysmocom - s.f.m.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_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 +} + +} |