454 lines
14 KiB
Plaintext
454 lines
14 KiB
Plaintext
module PCU_Tests_NS {
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/* Osmocom PCU test suite for IP Sub-Network-Service (SNS) in TTCN-3
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* (C) 2018-2019 Harald Welte <laforge@gnumonks.org>
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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 General_Types all;
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import from Osmocom_Types all;
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import from PCU_Tests all;
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import from SGSN_Components all;
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import from Osmocom_Gb_Types all;
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import from NS_CodecPort all;
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import from NS_Types all;
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import from BSSGP_Types all;
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import from UD_Types all;
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import from NS_CodecPort all;
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import from NS_CodecPort_CtrlFunct all;
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import from NS_Emulation all;
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import from Native_Functions all;
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import from IPL4asp_Types all;
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import from PCUIF_Types all;
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import from PCUIF_CodecPort all;
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type component RAW_NS_CT {
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/* UDP port towards the bottom (IUT) */
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port NS_CODEC_PT NSCP[4];
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var ConnectionId g_ns_conn_id[4] := {-1, -1, -1, -1};
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var NSConfiguration g_nsconfig[4];
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timer g_T_guard;
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}
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type component RAW_PCU_CT {
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/* PCUIF (we emulate the BTS part) */
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port PCUIF_CODEC_PT PCU;
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var ConnectionId g_pcu_conn_id := -1;
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}
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type component RAW_Test_CT extends RAW_NS_CT, RAW_PCU_CT {
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}
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private altstep as_Tguard() runs on RAW_NS_CT {
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[] g_T_guard.timeout {
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setverdict(fail, "Timeout of T_guard");
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mtc.stop;
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}
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}
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/* FIXME: make sure to use parameters from mp_gb_cfg.cell_id in the PCU INFO IND */
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private template (value) PCUIF_info_ind ts_PCUIF_INFO_default := {
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version := PCU_IF_VERSION,
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flags := c_PCUIF_Flags_default,
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trx := valueof(ts_PCUIF_InfoTrxs_def),
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bsic := 7,
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mcc := 262,
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mnc := 42,
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mnc_3_digits := 0,
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lac := 13135,
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rac := 0,
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nsei := mp_nsconfig.nsei,
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nse_timer := { 3, 3, 3, 3, 30, 3, 10 },
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cell_timer := { 3, 3, 3, 3, 3, 10, 3, 10, 3, 10, 3 },
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cell_id := 20960,
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repeat_time := 5 * 50,
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repeat_count := 3,
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bvci := mp_gb_cfg.bvci,
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t3142 := 20,
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t3169 := 5,
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t3191 := 5,
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t3193_10ms := 160,
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t3195 := 5,
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t3101 := 10,
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t3103 := 4,
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t3105 := 8,
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cv_countdown := 15,
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dl_tbf_ext := 250 * 10, /* ms */
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ul_tbf_ext := 250 * 10, /* ms */
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initial_cs := 2,
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initial_mcs := 6,
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nsvci := { mp_nsconfig.nsvci, 0 },
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local_pprt := { mp_nsconfig.remote_udp_port, 0 },
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remote_port := { mp_nsconfig.local_udp_port, 0 },
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remote_ip := { f_inet_haddr(mp_nsconfig.local_ip) , '00000000'O }
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}
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function f_init_pcuif() runs on RAW_PCU_CT {
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var PCUIF_info_ind info_ind;
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map(self:PCU, system:PCU);
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info_ind := valueof(ts_PCUIF_INFO_default);
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/* Connect the Unix Domain Socket */
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g_pcu_conn_id := f_pcuif_listen(PCU, mp_pcu_sock_path);
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PCU.receive(UD_connected:?);
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/* Wait for PCU_VERSION and return INFO_IND */
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PCU.receive(t_SD_PCUIF(g_pcu_conn_id, tr_PCUIF_TXT_IND(0, PCU_VERSION, ?)));
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/* FIXME: make sure to use parameters from mp_gb_cfg.cell_id in the PCU INFO IND */
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var template PCUIF_Message info_ind_msg := ts_PCUIF_INFO_IND(0, info_ind);
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PCU.send(t_SD_PCUIF(g_pcu_conn_id, info_ind_msg));
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}
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function f_pcuif_tx(template (value) PCUIF_Message msg) runs on RAW_PCU_CT {
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PCU.send(t_SD_PCUIF(g_pcu_conn_id, msg));
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}
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function f_init_ns_codec(integer idx := 0, float guard_secs := 60.0) runs on RAW_NS_CT {
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var Result res;
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if (not g_T_guard.running) {
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g_T_guard.start(guard_secs);
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activate(as_Tguard());
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}
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if (not isbound(g_nsconfig) or not isbound(g_nsconfig[idx])) {
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/* copy most parts from mp_nsconfig */
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g_nsconfig[idx] := mp_nsconfig;
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/* adjust those parts different for each NS-VC */
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g_nsconfig[idx].nsvci := mp_nsconfig.nsvci + idx;
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g_nsconfig[idx].local_udp_port := mp_nsconfig.local_udp_port + idx;
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}
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map(self:NSCP[idx], system:NSCP);
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/* Connect the UDP socket */
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log("connecting NSCP[", idx, "] to ", g_nsconfig[idx]);
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res := f_IPL4_connect(NSCP[idx], g_nsconfig[idx].remote_ip, g_nsconfig[idx].remote_udp_port,
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g_nsconfig[idx].local_ip, g_nsconfig[idx].local_udp_port, 0, { udp := {}});
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if (not ispresent(res.connId)) {
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setverdict(fail, "Could not connect NS UDP socket, check your configuration ", g_nsconfig[idx]);
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mtc.stop;
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}
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g_ns_conn_id[idx] := res.connId;
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}
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function f_ns_exp(template PDU_NS exp_rx, integer idx := 0) runs on RAW_NS_CT return PDU_NS {
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var NS_RecvFrom nrf;
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log("f_ns_exp() expecting ", exp_rx);
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alt {
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[] NSCP[idx].receive(t_NS_RecvFrom(exp_rx)) -> value nrf { }
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[] NSCP[idx].receive {
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setverdict(fail, "Received unexpected NS: ", nrf);
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mtc.stop;
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}
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}
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return nrf.msg;
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}
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/* perform outbound NS-ALIVE procedure */
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function f_outgoing_ns_alive(integer idx := 0) runs on RAW_NS_CT {
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NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], t_NS_ALIVE));
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alt {
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[] NSCP[idx].receive(t_NS_RecvFrom(t_NS_ALIVE_ACK));
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[] NSCP[idx].receive { repeat; }
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}
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}
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/* perform outbound NS-ALIVE procedure */
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function f_outgoing_ns_alive_no_ack(integer idx := 0, float tout := 10.0) runs on RAW_NS_CT {
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timer T := tout;
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NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], t_NS_ALIVE));
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T.start;
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alt {
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[] NSCP[idx].receive(t_NS_RecvFrom(t_NS_ALIVE_ACK)) {
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setverdict(fail, "Received unexpected NS-ALIVE ACK");
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}
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[] NSCP[idx].receive { repeat; }
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[] T.timeout {
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setverdict(pass);
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}
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}
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}
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/* ensure no matching message is received within 'tout' */
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function f_ensure_no_ns(template PDU_NS ns := ?, integer idx := 0, float tout := 3.0)
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runs on RAW_Test_CT {
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timer T := tout;
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T.start;
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alt {
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[] NSCP[idx].receive(t_NS_RecvFrom(ns)) {
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setverdict(fail, "NS-ALIVE from unconfigured (possibly initial) endpoint");
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}
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[] T.timeout {
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setverdict(pass);
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}
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}
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}
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/* perform outbound NS-BLOCK procedure */
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function f_outgoing_ns_block(NsCause cause, integer idx := 0) runs on RAW_NS_CT {
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NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_BLOCK(cause, g_nsconfig[idx].nsvci)));
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alt {
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[] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_BLOCK_ACK(g_nsconfig[idx].nsvci)));
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[] NSCP[idx].receive { repeat; }
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}
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}
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/* receive NS-ALIVE and ACK it */
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altstep as_rx_alive_tx_ack(boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT {
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[] NSCP[idx].receive(t_NS_RecvFrom(t_NS_ALIVE)) {
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NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], t_NS_ALIVE_ACK));
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if (not oneshot) { repeat; }
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}
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}
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/* Transmit BSSGP RESET for given BVCI and expect ACK */
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function f_tx_bvc_reset_rx_ack(BssgpBvci bvci, integer idx := 0, boolean exp_ack := true)
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runs on RAW_NS_CT {
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var PDU_BSSGP bssgp_tx := valueof(ts_BVC_RESET(BSSGP_CAUSE_NET_SV_CAP_MOD_GT_ZERO_KBPS, bvci,
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mp_gb_cfg.cell_id));
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timer T := 5.0;
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NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_UNITDATA(t_SduCtrlB, 0, enc_PDU_BSSGP(bssgp_tx))));
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T.start;
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alt {
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[exp_ack] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_UNITDATA(t_SduCtrlB, 0,
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decmatch tr_BVC_RESET_ACK(bvci, ?)))) {
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setverdict(pass);
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}
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[exp_ack] T.timeout {
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setverdict(fail, "No response to BVC-RESET");
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}
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[not exp_ack] T.timeout {
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setverdict(pass);
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}
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[] NSCP[idx].receive { repeat; }
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}
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}
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/* Receive a BSSGP RESET for given BVCI and ACK it */
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altstep as_rx_bvc_reset_tx_ack(BssgpBvci bvci, boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT {
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var NS_RecvFrom ns_rf;
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/* FIXME: nail down received cell_id in match */
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[] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_UNITDATA(t_SduCtrlB, 0,
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decmatch tr_BVC_RESET(?, bvci, ?))))
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-> value ns_rf {
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var PDU_BSSGP bssgp_rx := dec_PDU_BSSGP(ns_rf.msg.pDU_NS_Unitdata.nS_SDU);
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var PDU_BSSGP bssgp_tx := valueof(ts_BVC_RESET_ACK(bvci, mp_gb_cfg.cell_id));
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NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_UNITDATA(t_SduCtrlB, 0, enc_PDU_BSSGP(bssgp_tx))));
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if (not oneshot) { repeat; }
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}
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}
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/* Receive a BSSGP UNBLOCK for given BVCI and ACK it */
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altstep as_rx_bvc_unblock_tx_ack(BssgpBvci bvci, boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT {
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var NS_RecvFrom ns_rf;
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[] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_UNITDATA(t_SduCtrlB, 0,
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decmatch t_BVC_UNBLOCK(bvci))))
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-> value ns_rf {
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var PDU_BSSGP bssgp_rx := dec_PDU_BSSGP(ns_rf.msg.pDU_NS_Unitdata.nS_SDU);
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var PDU_BSSGP bssgp_tx := valueof(t_BVC_UNBLOCK_ACK(bvci));
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NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_UNITDATA(t_SduCtrlB, 0, enc_PDU_BSSGP(bssgp_tx))));
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if (not oneshot) { repeat; }
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}
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}
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/* Receive a BSSGP FLOW-CONTROL-BVC and ACK it */
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altstep as_rx_bvc_fc_tx_ack(BssgpBvci bvci, boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT {
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var NS_RecvFrom ns_rf;
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[] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_UNITDATA(t_SduCtrlB, bvci,
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decmatch tr_BVC_FC_BVC)))
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-> value ns_rf {
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var PDU_BSSGP bssgp_rx := dec_PDU_BSSGP(ns_rf.msg.pDU_NS_Unitdata.nS_SDU);
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var OCT1 tag := bssgp_rx.pDU_BSSGP_FLOW_CONTROL_BVC.tag.unstructured_Value;
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var PDU_BSSGP bssgp_tx := valueof(t_BVC_FC_BVC_ACK(tag));
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NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_UNITDATA(t_SduCtrlB, bvci, enc_PDU_BSSGP(bssgp_tx))));
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if (not oneshot) { repeat; }
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}
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}
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/**********************************************************************************
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* Classic Gb/IP bring-up test cases using NS-{RESET,BLOCK,UNBLOCK} and no IP-SNS *
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**********************************************************************************/
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/* Receive a NS-RESET and ACK it */
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private altstep as_rx_ns_reset_ack(boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT {
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var NS_RecvFrom ns_rf;
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[] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_RESET(NS_CAUSE_OM_INTERVENTION, g_nsconfig[idx].nsvci,
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g_nsconfig[idx].nsei))) -> value ns_rf {
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NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_RESET_ACK(g_nsconfig[idx].nsvci,
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g_nsconfig[idx].nsei)));
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if (not oneshot) { repeat; }
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}
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}
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/* Receive a NS-UNBLOCK and ACK it */
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private altstep as_rx_ns_unblock_ack(boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT {
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var NS_RecvFrom ns_rf;
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[] NSCP[idx].receive(t_NS_RecvFrom(t_NS_UNBLOCK)) -> value ns_rf {
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NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], t_NS_UNBLOCK_ACK));
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if (not oneshot) { repeat; }
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}
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}
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/* test the NS-RESET procedure */
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testcase TC_ns_reset() runs on RAW_Test_CT {
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f_init_ns_codec();
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f_init_pcuif();
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/* Expect inbound NS-RESET procedure */
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as_rx_ns_reset_ack(oneshot := true);
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setverdict(pass);
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}
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/* ensure NS-RESET are re-transmitted */
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testcase TC_ns_reset_retrans() runs on RAW_Test_CT {
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f_init_ns_codec();
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f_init_pcuif();
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var integer i;
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for (i := 0; i < 3; i := i+1) {
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NSCP[0].receive(t_NS_RecvFrom(tr_NS_RESET(NS_CAUSE_OM_INTERVENTION,
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g_nsconfig[0].nsvci, g_nsconfig[0].nsei)));
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}
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/* Expect inbound NS-RESET procedure */
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as_rx_ns_reset_ack(oneshot := true);
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setverdict(pass);
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}
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/* test the inbound NS-ALIVE procedure after NS-RESET */
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testcase TC_ns_alive() runs on RAW_Test_CT {
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f_init_ns_codec();
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f_init_pcuif();
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/* Expect inbound NS-RESET procedure */
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as_rx_ns_reset_ack(oneshot := true);
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/* wait for one ALIVE cycle, then ACK any further ALIVE in the background */
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as_rx_alive_tx_ack(oneshot := true);
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setverdict(pass);
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}
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/* Test for NS-RESET after NS-ALIVE timeout */
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testcase TC_ns_alive_timeout_reset() runs on RAW_Test_CT {
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f_init_ns_codec(guard_secs := 100.0);
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f_init_pcuif();
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/* Expect inbound NS-RESET procedure */
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as_rx_ns_reset_ack(oneshot := true);
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/* wait for at least one NS-ALIVE */
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NSCP[0].receive(t_NS_RecvFrom(t_NS_ALIVE));
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/* wait for NS-RESET to re-appear, ignoring any NS-ALIVE until then */
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alt {
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[] as_rx_ns_reset_ack(oneshot := true) { setverdict(pass); }
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[] NSCP[0].receive(t_NS_RecvFrom(t_NS_ALIVE)) { repeat; }
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}
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}
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/* test for NS-RESET/NS-ALIVE/NS-UNBLOCK */
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testcase TC_ns_unblock() runs on RAW_Test_CT {
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f_init_ns_codec();
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f_init_pcuif();
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/* Expect inbound NS-RESET procedure */
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as_rx_ns_reset_ack(oneshot := true);
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/* wait for one ALIVE cycle, then ACK any further ALIVE in the background */
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as_rx_alive_tx_ack(oneshot := true);
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activate(as_rx_alive_tx_ack());
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as_rx_ns_unblock_ack(oneshot := true);
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setverdict(pass);
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}
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/* test for NS-UNBLOCK re-transmissions */
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testcase TC_ns_unblock_retrans() runs on RAW_Test_CT {
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f_init_ns_codec();
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f_init_pcuif();
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/* Expect inbound NS-RESET procedure */
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as_rx_ns_reset_ack(oneshot := true);
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/* wait for one ALIVE cycle, then ACK any further ALIVE in the background */
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as_rx_alive_tx_ack(oneshot := true);
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activate(as_rx_alive_tx_ack());
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/* wait for first NS-UNBLOCK, don't respond */
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NSCP[0].receive(t_NS_RecvFrom(t_NS_UNBLOCK));
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/* wait for re-transmission of NS-UNBLOCK */
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as_rx_ns_unblock_ack(oneshot := true);
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setverdict(pass);
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}
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/* full bring-up of the Gb link for NS and BSSGP layer up to BVC-FC */
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testcase TC_ns_full_bringup() runs on RAW_Test_CT {
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f_init_ns_codec();
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f_init_pcuif();
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/* Expect inbound NS-RESET procedure */
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as_rx_ns_reset_ack(oneshot := true);
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/* wait for one ALIVE cycle, then ACK any further ALIVE in the background */
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as_rx_alive_tx_ack(oneshot := true);
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activate(as_rx_alive_tx_ack());
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as_rx_ns_unblock_ack(oneshot := true);
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f_outgoing_ns_alive();
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/* Expect BVC-RESET for signaling (0) and ptp BVCI */
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as_rx_bvc_reset_tx_ack(0, oneshot := true);
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as_rx_bvc_reset_tx_ack(mp_gb_cfg.bvci, oneshot := true);
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as_rx_bvc_unblock_tx_ack(mp_gb_cfg.bvci, oneshot := true);
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/* wait for one FLOW-CONTROL BVC and then ACK any further in the future */
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as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci, oneshot := true);
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activate(as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci));
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|
setverdict(pass);
|
|
}
|
|
|
|
/* test outbound (SGSN-originated) NS-BLOCK procedure */
|
|
testcase TC_ns_so_block() runs on RAW_Test_CT {
|
|
f_init_ns_codec();
|
|
f_init_pcuif();
|
|
|
|
/* Expect inbound NS-RESET procedure */
|
|
as_rx_ns_reset_ack(oneshot := true);
|
|
|
|
/* wait for one ALIVE cycle, then ACK any further ALIVE in the background */
|
|
as_rx_alive_tx_ack(oneshot := true);
|
|
activate(as_rx_alive_tx_ack());
|
|
|
|
as_rx_ns_unblock_ack(oneshot := true);
|
|
|
|
f_outgoing_ns_alive();
|
|
|
|
f_outgoing_ns_block(NS_CAUSE_EQUIPMENT_FAILURE);
|
|
setverdict(pass);
|
|
}
|
|
|
|
|
|
control {
|
|
execute( TC_ns_reset() );
|
|
execute( TC_ns_reset_retrans() );
|
|
execute( TC_ns_alive() );
|
|
execute( TC_ns_alive_timeout_reset() );
|
|
execute( TC_ns_unblock() );
|
|
execute( TC_ns_unblock_retrans() );
|
|
execute( TC_ns_full_bringup() );
|
|
execute( TC_ns_so_block() );
|
|
}
|
|
|
|
}
|