| module RAW_NS { |
| |
| /* Osmocom NS test suite for NS in TTCN-3 |
| * (C) 2018-2019 Harald Welte <laforge@gnumonks.org> |
| * 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 General_Types all; |
| import from Osmocom_Types all; |
| import from Osmocom_Gb_Types all; |
| import from NS_CodecPort all; |
| import from NS_Types all; |
| import from BSSGP_Types all; |
| import from NS_CodecPort all; |
| import from NS_CodecPort_CtrlFunct all; |
| import from NS_Emulation all; |
| import from Native_Functions all; |
| import from IPL4asp_Types all; |
| |
| public type component RAW_NS_CT { |
| /* UDP port towards the bottom (IUT) */ |
| port NS_CODEC_PT NSCP[4]; |
| var ConnectionId g_ns_conn_id[4] := {-1, -1, -1, -1}; |
| var NSConfiguration g_nsconfig[4]; |
| timer g_T_guard; |
| } |
| |
| public altstep as_Tguard() runs on RAW_NS_CT { |
| [] g_T_guard.timeout { |
| setverdict(fail, "Timeout of T_guard"); |
| mtc.stop; |
| } |
| } |
| |
| function f_init_ns_codec(NSConfiguration ns_config, integer idx := 0, float guard_secs := 60.0, integer tc_offset := 0) runs on RAW_NS_CT { |
| var Result res; |
| |
| if (not g_T_guard.running) { |
| g_T_guard.start(guard_secs); |
| activate(as_Tguard()); |
| } |
| |
| if (not isbound(g_nsconfig) or not isbound(g_nsconfig[idx])) { |
| /* copy most parts from mp_nsconfig */ |
| g_nsconfig[idx] := ns_config; |
| /* adjust those parts different for each NS-VC */ |
| g_nsconfig[idx].nsvci := ns_config.nsvci + idx; |
| g_nsconfig[idx].provider.ip.local_udp_port := ns_config.provider.ip.local_udp_port + idx + tc_offset; |
| } |
| |
| map(self:NSCP[idx], system:NSCP); |
| /* Connect the UDP socket */ |
| var NSConfiguration nscfg := g_nsconfig[idx]; |
| log("connecting NSCP[", idx, "] to ", nscfg); |
| res := f_IPL4_connect(NSCP[idx], nscfg.provider.ip.remote_ip, nscfg.provider.ip.remote_udp_port, |
| nscfg.provider.ip.local_ip, nscfg.provider.ip.local_udp_port, 0, { udp := {}}); |
| if (not ispresent(res.connId)) { |
| setverdict(fail, "Could not connect NS UDP socket, check your configuration ", g_nsconfig[idx]); |
| mtc.stop; |
| } |
| g_ns_conn_id[idx] := res.connId; |
| |
| } |
| |
| function f_ns_exp(template PDU_NS exp_rx, integer idx := 0) runs on RAW_NS_CT return PDU_NS { |
| var NS_RecvFrom nrf; |
| log("f_ns_exp() expecting ", exp_rx); |
| alt { |
| [] NSCP[idx].receive(t_NS_RecvFrom(exp_rx)) -> value nrf { } |
| [] NSCP[idx].receive(t_NS_RecvFrom(?)) -> value nrf { |
| setverdict(fail, "Received unexpected NS: ", nrf); |
| mtc.stop; |
| } |
| } |
| return nrf.msg; |
| } |
| |
| /* perform outbound NS-ALIVE procedure */ |
| function f_outgoing_ns_alive(integer idx := 0) runs on RAW_NS_CT { |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], t_NS_ALIVE)); |
| alt { |
| [] NSCP[idx].receive(t_NS_RecvFrom(t_NS_ALIVE_ACK)); |
| [] NSCP[idx].receive { repeat; } |
| } |
| } |
| |
| /* perform outbound NS-ALIVE procedure */ |
| function f_outgoing_ns_alive_no_ack(integer idx := 0, float tout := 10.0) runs on RAW_NS_CT { |
| timer T := tout; |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], t_NS_ALIVE)); |
| T.start; |
| alt { |
| [] NSCP[idx].receive(t_NS_RecvFrom(t_NS_ALIVE_ACK)) { |
| setverdict(fail, "Received unexpected NS-ALIVE ACK"); |
| } |
| [] NSCP[idx].receive { repeat; } |
| [] T.timeout { |
| setverdict(pass); |
| } |
| } |
| } |
| |
| function f_outgoing_ns_reset(integer idx := 0, float tout := 10.0) runs on RAW_NS_CT { |
| timer T := tout; |
| var template PDU_NS reset := ts_NS_RESET(NS_CAUSE_EQUIPMENT_FAILURE, g_nsconfig[idx].nsvci, g_nsconfig[idx].nsei) |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], reset)); |
| T.start; |
| alt { |
| [] NSCP[idx].receive(t_NS_RecvFrom(ts_NS_RESET_ACK(g_nsconfig[idx].nsvci, g_nsconfig[idx].nsei))) { |
| setverdict(pass); |
| } |
| [] NSCP[idx].receive { repeat; } |
| [] T.timeout { |
| setverdict(fail, "Failed to receive a RESET ACK"); |
| } |
| } |
| } |
| |
| /* perform outbound NS-BLOCK procedure */ |
| function f_outgoing_ns_block(NsCause cause, integer idx := 0) runs on RAW_NS_CT { |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_BLOCK(cause, g_nsconfig[idx].nsvci))); |
| alt { |
| [] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_BLOCK_ACK(g_nsconfig[idx].nsvci))); |
| [] NSCP[idx].receive { repeat; } |
| } |
| } |
| |
| /* receive NS-ALIVE and ACK it */ |
| altstep as_rx_alive_tx_ack(boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT { |
| [] NSCP[idx].receive(t_NS_RecvFrom(t_NS_ALIVE)) { |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], t_NS_ALIVE_ACK)); |
| if (not oneshot) { repeat; } |
| } |
| } |
| |
| /* Transmit BSSGP RESET for given BVCI and expect ACK */ |
| function f_tx_bvc_reset_rx_ack(BssgpBvci bvci, BssgpCellId cell_id, integer idx := 0, boolean exp_ack := true) |
| runs on RAW_NS_CT { |
| var PDU_BSSGP bssgp_tx := valueof(ts_BVC_RESET(BSSGP_CAUSE_NET_SV_CAP_MOD_GT_ZERO_KBPS, bvci, |
| cell_id)); |
| timer T := 5.0; |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_UNITDATA(t_SduCtrlB, 0, enc_PDU_BSSGP(bssgp_tx)))); |
| T.start; |
| alt { |
| [exp_ack] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_UNITDATA(t_SduCtrlB, 0, |
| decmatch tr_BVC_RESET_ACK(bvci, ?)))) { |
| setverdict(pass); |
| } |
| [exp_ack] T.timeout { |
| setverdict(fail, "No response to BVC-RESET"); |
| } |
| [not exp_ack] T.timeout { |
| setverdict(pass); |
| } |
| [] NSCP[idx].receive { repeat; } |
| } |
| } |
| |
| /* Receive a BSSGP RESET for given BVCI and ACK it */ |
| altstep as_rx_bvc_reset_tx_ack(BssgpBvci bvci, template (omit) BssgpCellId cell_id, boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT { |
| var NS_RecvFrom ns_rf; |
| [] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_UNITDATA(t_SduCtrlB, 0, |
| decmatch tr_BVC_RESET(?, bvci, cell_id)))) |
| -> value ns_rf { |
| var PDU_BSSGP bssgp_rx := dec_PDU_BSSGP(ns_rf.msg.pDU_NS_Unitdata.nS_SDU); |
| var PDU_BSSGP bssgp_tx := valueof(ts_BVC_RESET_ACK(bvci, cell_id)); |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_UNITDATA(t_SduCtrlB, 0, enc_PDU_BSSGP(bssgp_tx)))); |
| if (not oneshot) { repeat; } |
| } |
| } |
| |
| |
| /* Receive a BSSGP UNBLOCK for given BVCI and ACK it */ |
| altstep as_rx_bvc_unblock_tx_ack(BssgpBvci bvci, boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT { |
| var NS_RecvFrom ns_rf; |
| [] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_UNITDATA(t_SduCtrlB, 0, |
| decmatch t_BVC_UNBLOCK(bvci)))) |
| -> value ns_rf { |
| var PDU_BSSGP bssgp_rx := dec_PDU_BSSGP(ns_rf.msg.pDU_NS_Unitdata.nS_SDU); |
| var PDU_BSSGP bssgp_tx := valueof(t_BVC_UNBLOCK_ACK(bvci)); |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_UNITDATA(t_SduCtrlB, 0, enc_PDU_BSSGP(bssgp_tx)))); |
| if (not oneshot) { repeat; } |
| } |
| } |
| |
| /* Receive a BSSGP FLOW-CONTROL-BVC and ACK it */ |
| altstep as_rx_bvc_fc_tx_ack(BssgpBvci bvci, boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT { |
| var NS_RecvFrom ns_rf; |
| [] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_UNITDATA(t_SduCtrlB, bvci, |
| decmatch tr_BVC_FC_BVC))) |
| -> value ns_rf { |
| var PDU_BSSGP bssgp_rx := dec_PDU_BSSGP(ns_rf.msg.pDU_NS_Unitdata.nS_SDU); |
| var OCT1 tag := bssgp_rx.pDU_BSSGP_FLOW_CONTROL_BVC.tag.unstructured_Value; |
| var PDU_BSSGP bssgp_tx := valueof(t_BVC_FC_BVC_ACK(tag)); |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_UNITDATA(t_SduCtrlB, bvci, enc_PDU_BSSGP(bssgp_tx)))); |
| if (not oneshot) { repeat; } |
| } |
| } |
| |
| /********************************************************************************** |
| * Classic Gb/IP bring-up test cases using NS-{RESET,BLOCK,UNBLOCK} and no IP-SNS * |
| **********************************************************************************/ |
| |
| /* Receive a NS-RESET and ACK it */ |
| public altstep as_rx_ns_reset_ack(boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT { |
| var NS_RecvFrom ns_rf; |
| [] NSCP[idx].receive(t_NS_RecvFrom(tr_NS_RESET(NS_CAUSE_OM_INTERVENTION, g_nsconfig[idx].nsvci, |
| g_nsconfig[idx].nsei))) -> value ns_rf { |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_RESET_ACK(g_nsconfig[idx].nsvci, |
| g_nsconfig[idx].nsei))); |
| if (not oneshot) { repeat; } |
| } |
| } |
| /* Receive a NS-UNBLOCK and ACK it */ |
| public altstep as_rx_ns_unblock_ack(boolean oneshot := false, integer idx := 0) runs on RAW_NS_CT { |
| var NS_RecvFrom ns_rf; |
| [] NSCP[idx].receive(t_NS_RecvFrom(t_NS_UNBLOCK)) -> value ns_rf { |
| NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], t_NS_UNBLOCK_ACK)); |
| if (not oneshot) { repeat; } |
| } |
| } |
| |
| } |