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Harald Welte gerrit-no-reply at lists.osmocom.orgHarald Welte has uploaded this change for review. ( https://gerrit.osmocom.org/12984 Change subject: PCU: Tests for the BSS/PCU side NS/BSSGP implementations ...................................................................... PCU: Tests for the BSS/PCU side NS/BSSGP implementations The existing (unused) PCU_Tests are operating on top of a NS + BSSGP emulation, i.e. they're aimed at testing higher protocol layers. Also, they required BTS+BSC to run next to the PCU. The new PCU_Tests_RAW introduced in this patch are the exact opposite: * they test the PCU alone (attach to PCUIF and Gb interface) * they don't require BTS or BSC to run * they don't use NS + BSSGP emulation but raw NS/BSSGP frames to test the very NS/BSSGP implementation inside of OsmoPCU. Change-Id: I7ad76b96974cf0a686ad0f00ccd09d1a9df8b4d5 --- M pcu/PCU_Tests.cfg A pcu/PCU_Tests_RAW.ttcn M pcu/gen_links.sh 3 files changed, 372 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/84/12984/1 diff --git a/pcu/PCU_Tests.cfg b/pcu/PCU_Tests.cfg index 5975290..17d5448 100644 --- a/pcu/PCU_Tests.cfg +++ b/pcu/PCU_Tests.cfg @@ -33,6 +33,7 @@ [TESTPORT_PARAMETERS] *.*.udpReuseAddress := "yes"; +*.PCU.socket_type := "SEQPACKET" [MAIN_CONTROLLER] diff --git a/pcu/PCU_Tests_RAW.ttcn b/pcu/PCU_Tests_RAW.ttcn new file mode 100644 index 0000000..50d9d0e --- /dev/null +++ b/pcu/PCU_Tests_RAW.ttcn @@ -0,0 +1,370 @@ +module PCU_Tests_RAW { + +/* "RAW" PCU tests: Talk directly to the PCU socket of OsmoPCU on the one hand side (emulating + the BTS/BSC side PCU socket server) and the Gb interface on the other hand side. No NS/BSSGP + Emulation is used; rather, we simply use the NS_CodecPort to implement both standard and non- + standard procedures on the NS and BSSGP level. The goal of these tests is to test exactly + those NS and BSSGP implementations on the BSS (PCU) side. */ + +import from General_Types all; +import from Osmocom_Types all; +import from NS_Types all; +import from BSSGP_Types all; +import from Osmocom_Gb_Types all; + +import from BSSGP_Emulation all; /* BssgpConfig */ +import from NS_Emulation all; /* NSConfiguration */ + +import from UD_Types all; +import from PCUIF_Types all; +import from PCUIF_CodecPort all; +import from IPL4asp_Types all; +import from NS_CodecPort all; +import from NS_CodecPort_CtrlFunct all; +import from Native_Functions all; +import from PCU_Tests all; + + +type component RAW_NS_CT { + /* UDP port towards the bottom (IUT) */ + port NS_CODEC_PT NSCP; + var ConnectionId g_ns_conn_id := -1; + + /* PCUIF (we emulate the BTS part) */ + port PCUIF_CODEC_PT PCU; + var ConnectionId g_pcu_conn_id := -1; +} + +function f_init_pcuif() runs on RAW_NS_CT { + map(self:PCU, system:PCU); + + /* Connect the Unix Domain Socket */ + g_pcu_conn_id := f_pcuif_listen(PCU, PCU_SOCK_DEFAULT); + PCU.receive(UD_connected:?); + + /* Wait for PCU_VERSION and return INFO_IND */ + PCU.receive(t_SD_PCUIF(g_pcu_conn_id, tr_PCUIF_TXT_IND(0, PCU_VERSION, ?))); + /* FIXME: make sure to use parameters from mp_gb_cfg.cell_id in the PCU INFO IND */ + var template PCUIF_Message info_ind := ts_PCUIF_INFO_IND(bts_nr := 0, + nsei := mp_nsconfig.nsei, + nsvci := mp_nsconfig.nsvci, + bvci := mp_gb_cfg.bvci, + local_port := mp_nsconfig.remote_udp_port, + remote_port := mp_nsconfig.local_udp_port, + remote_ip := f_inet_haddr(mp_nsconfig.remote_ip) + ); + PCU.send(t_SD_PCUIF(g_pcu_conn_id, info_ind)); +} + +function f_init_ns_codec() runs on RAW_NS_CT { + var Result res; + map(self:NSCP, system:NSCP); + /* Connect the UDP socket */ + res := f_IPL4_connect(NSCP, mp_nsconfig.remote_ip, mp_nsconfig.remote_udp_port, + mp_nsconfig.local_ip, mp_nsconfig.local_udp_port, + 0, { udp := {}}); + if (not ispresent(res.connId)) { + setverdict(fail, "Could not connect NS UDP socket, check your configuration"); + mtc.stop; + } + g_ns_conn_id := res.connId; + /* FIXME: start guard timer */ +} + +function f_ns_exp(template PDU_NS exp_rx) runs on RAW_NS_CT return PDU_NS { + var NS_RecvFrom nrf; + log("f_ns_exp() expecting ", exp_rx); + alt { + [] NSCP.receive(t_NS_RecvFrom(exp_rx)) -> value nrf { } + [] NSCP.receive { + setverdict(fail, "Received unexpected NS: ", nrf); + mtc.stop; + } + } + return nrf.msg; +} + +/* perform inbound SNS-SIZE procedure */ +function f_incoming_sns_size(template (omit) NsCause cause := omit) runs on RAW_NS_CT { + var PDU_NS rx; + /* expect one single SNS-SIZE with RESET flag; one remote v4 EP; no v6 EP */ + rx := f_ns_exp(tr_SNS_SIZE(mp_nsconfig.nsei, rst_flag := true, max_nsvcs := ?, + num_v4 := 1, num_v6 := omit)); + NSCP.send(t_NS_Send(g_ns_conn_id, ts_SNS_SIZE_ACK(mp_nsconfig.nsei, cause))); +} + +/* perform outbound SNS-SIZE procedure */ +function f_outgoing_sns_size(template (omit) NsCause cause := omit) runs on RAW_NS_CT { + var PDU_NS rx; + NSCP.send(t_NS_Send(g_ns_conn_id, ts_SNS_SIZE(mp_nsconfig.nsei, rst_flag := true, max_nsvcs := 1, + num_v4 := 1, num_v6 := omit) + )); + /* expect one single SNS-SIZE with RESET flag; one remote v4 EP; no v6 EP */ + rx := f_ns_exp(tr_SNS_SIZE_ACK(mp_nsconfig.nsei, cause)); +} + +/* perform inbound SNS-CONFIG procedure */ +function f_incoming_sns_config(template (omit) NsCause cause := omit) runs on RAW_NS_CT { + var PDU_NS rx; + rx := f_ns_exp(tr_SNS_CONFIG(mp_nsconfig.nsei, end_flag := true, v4 := ?)); + NSCP.send(t_NS_Send(g_ns_conn_id, ts_SNS_CONFIG_ACK(mp_nsconfig.nsei, cause))); +} + +/* perform outbound SNS-CONFIG procedure */ +function f_outgoing_sns_config(template (omit) NsCause cause := omit) runs on RAW_NS_CT { + var PDU_NS rx; + var template (omit) IP4_Elements v4 := { ts_SNS_IPv4(mp_nsconfig.local_ip, + mp_nsconfig.local_udp_port) } + NSCP.send(t_NS_Send(g_ns_conn_id, ts_SNS_CONFIG(mp_nsconfig.nsei, true, v4))); + rx := f_ns_exp(tr_SNS_CONFIG_ACK(mp_nsconfig.nsei, cause)); +} + +/* perform outbound NS-ALIVE procedure */ +function f_outgoing_ns_alive() runs on RAW_NS_CT { + NSCP.send(t_NS_Send(g_ns_conn_id, t_NS_ALIVE)); + alt { + [] NSCP.receive(t_NS_RecvFrom(t_NS_ALIVE_ACK)); + [] NSCP.receive { repeat; } + } +} + +/* perform outbound NS-BLOCK procedure */ +function f_outgoing_ns_block(NsCause cause) runs on RAW_NS_CT { + NSCP.send(t_NS_Send(g_ns_conn_id, ts_NS_BLOCK(cause, mp_nsconfig.nsvci))); + alt { + [] NSCP.receive(t_NS_RecvFrom(tr_NS_BLOCK_ACK(mp_nsconfig.nsvci))); + [] NSCP.receive { repeat; } + } +} + +/* receive NS-ALIVE and ACK it */ +altstep as_rx_alive_tx_ack(boolean oneshot := false) runs on RAW_NS_CT { + [] NSCP.receive(t_NS_RecvFrom(t_NS_ALIVE)) { + NSCP.send(t_NS_Send(g_ns_conn_id, t_NS_ALIVE_ACK)); + if (not oneshot) { repeat; } + } +} + +/* Receive a BSSGP RESET for given BVCI and ACK it */ +altstep as_rx_bvc_reset_tx_ack(BssgpBvci bvci, boolean oneshot := false) runs on RAW_NS_CT { + var NS_RecvFrom ns_rf; + /* FIXME: nail down received cell_id in match */ + [] NSCP.receive(t_NS_RecvFrom(tr_NS_UNITDATA(t_SduCtrlB, 0, + decmatch tr_BVC_RESET(?, 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(ts_BVC_RESET_ACK(bvci, mp_gb_cfg.cell_id)); + NSCP.send(t_NS_Send(g_ns_conn_id, 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) runs on RAW_NS_CT { + var NS_RecvFrom ns_rf; + [] NSCP.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.send(t_NS_Send(g_ns_conn_id, 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) runs on RAW_NS_CT { + var NS_RecvFrom ns_rf; + [] NSCP.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.send(t_NS_Send(g_ns_conn_id, 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 */ +private altstep as_rx_ns_reset_ack(boolean oneshot := false) runs on RAW_NS_CT { + var NS_RecvFrom ns_rf; + [] NSCP.receive(t_NS_RecvFrom(tr_NS_RESET(NS_CAUSE_OM_INTERVENTION, mp_nsconfig.nsvci, + mp_nsconfig.nsei))) -> value ns_rf { + NSCP.send(t_NS_Send(g_ns_conn_id, ts_NS_RESET_ACK(mp_nsconfig.nsvci, mp_nsconfig.nsei))); + if (not oneshot) { repeat; } + } +} +/* Receive a NS-UNBLOCK and ACK it */ +private altstep as_rx_ns_unblock_ack(boolean oneshot := false) runs on RAW_NS_CT { + var NS_RecvFrom ns_rf; + [] NSCP.receive(t_NS_RecvFrom(t_NS_UNBLOCK)) -> value ns_rf { + NSCP.send(t_NS_Send(g_ns_conn_id, t_NS_UNBLOCK_ACK)); + if (not oneshot) { repeat; } + } +} + +/* test the NS-RESET procedure */ +testcase TC_ns_reset() runs on RAW_NS_CT { + f_init_ns_codec(); + f_init_pcuif(); + + + /* Expect inbound NS-RESET procedure */ + as_rx_ns_reset_ack(); + setverdict(pass); +} + +/* ensure NS-RESET are re-transmitted */ +testcase TC_ns_reset_retrans() runs on RAW_NS_CT { + f_init_ns_codec(); + f_init_pcuif(); + + var integer i; + for (i := 0; i < 3; i := i+1) { + NSCP.receive(t_NS_RecvFrom(tr_NS_RESET(NS_CAUSE_OM_INTERVENTION, + mp_nsconfig.nsvci, mp_nsconfig.nsei))); + } + + /* Expect inbound NS-RESET procedure */ + as_rx_ns_reset_ack(oneshot := true); + setverdict(pass); +} + +/* test the inbound NS-ALIVE procedure after NS-RESET */ +testcase TC_ns_alive() runs on RAW_NS_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); + setverdict(pass); +} + +/* Test for NS-RESET after NS-ALIVE timeout */ +testcase TC_ns_alive_timeout_reset() runs on RAW_NS_CT { + f_init_ns_codec(); + f_init_pcuif(); + + /* Expect inbound NS-RESET procedure */ + as_rx_ns_reset_ack(oneshot := true); + + /* wait for at least one NS-ALIVE */ + NSCP.receive(t_NS_RecvFrom(t_NS_ALIVE)); + + /* wait for NS-RESET to re-appear, ignoring any NS-ALIVE until then */ + alt { + [] as_rx_ns_reset_ack(oneshot := true) { setverdict(pass); } + [] NSCP.receive(t_NS_RecvFrom(t_NS_ALIVE)) { repeat; } + } +} + +/* test for NS-RESET/NS-ALIVE/NS-UNBLOCK */ +testcase TC_ns_unblock() runs on RAW_NS_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); + setverdict(pass); +} + +/* test for NS-UNBLOCK re-transmissions */ +testcase TC_ns_unblock_retrans() runs on RAW_NS_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()); + + /* wait for first NS-UNBLOCK, don't respond */ + NSCP.receive(t_NS_RecvFrom(t_NS_UNBLOCK)); + + /* wait for re-transmission of NS-UNBLOCK */ + as_rx_ns_unblock_ack(oneshot := true); + setverdict(pass); +} + +/* full bring-up of the Gb link for NS and BSSGP layer up to BVC-FC */ +testcase TC_ns_full_bringup() runs on RAW_NS_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(); + + /* Expect BVC-RESET for signaling (0) and ptp BVCI */ + as_rx_bvc_reset_tx_ack(0, oneshot := true); + as_rx_bvc_reset_tx_ack(mp_gb_cfg.bvci, oneshot := true); + as_rx_bvc_unblock_tx_ack(mp_gb_cfg.bvci, oneshot := true); + + /* wait for one FLOW-CONTROL BVC and then ACK any further in the future */ + as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci, oneshot := true); + activate(as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci)); + setverdict(pass); +} + +/* test outbound (SGSN-originated) NS-BLOCK procedure */ +testcase TC_ns_so_block() runs on RAW_NS_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() ); +} + + + + + + +} diff --git a/pcu/gen_links.sh b/pcu/gen_links.sh index 6e549eb..f9f6dd5 100755 --- a/pcu/gen_links.sh +++ b/pcu/gen_links.sh @@ -50,6 +50,7 @@ FILES+="NS_Emulation.ttcn NS_CodecPort.ttcn NS_CodecPort_CtrlFunct.ttcn NS_CodecPort_CtrlFunctDef.cc " FILES+="BSSGP_Emulation.ttcn Osmocom_Gb_Types.ttcn " FILES+="LLC_Templates.ttcn L3_Templates.ttcn L3_Common.ttcn " +FILES+="PCUIF_Types.ttcn PCUIF_CodecPort.ttcn " gen_links $DIR $FILES ignore_pp_results -- To view, visit https://gerrit.osmocom.org/12984 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I7ad76b96974cf0a686ad0f00ccd09d1a9df8b4d5 Gerrit-Change-Number: 12984 Gerrit-PatchSet: 1 Gerrit-Owner: Harald Welte <laforge at gnumonks.org> -------------- next part -------------- An HTML attachment was scrubbed... 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