From 811651ebdcffad008916861a734b4ac67acb82e4 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Sat, 5 Aug 2017 15:25:06 +0200 Subject: GGSN_Tests: Get it up to PDP Ctx ACT, GTP-U and Ctx DEACT --- ggsn_tests/GGSN_Tests.ttcn | 166 ++++++++++++++++++++++++++++++++++----------- 1 file changed, 126 insertions(+), 40 deletions(-) (limited to 'ggsn_tests') diff --git a/ggsn_tests/GGSN_Tests.ttcn b/ggsn_tests/GGSN_Tests.ttcn index 9864da1f..d485fd8e 100644 --- a/ggsn_tests/GGSN_Tests.ttcn +++ b/ggsn_tests/GGSN_Tests.ttcn @@ -1,6 +1,7 @@ module GGSN_Tests { import from General_Types all; + import from Osmocom_Types all; import from IPL4asp_PortType all; import from IPL4asp_Types all; import from GTP_CodecPort all; @@ -14,6 +15,26 @@ module GGSN_Tests { const charstring g_bind_ip_c := "127.23.42.1"; const charstring g_bind_ip_u := g_bind_ip_c; + type set PdpContext { + hexstring imsi, + octetstring msisdn optional, + octetstring apn, + EndUserAddress eua, + BIT4 nsapi, + /* TEI (Data) local side */ + OCT4 teid, + /* TEI (Control) local side */ + OCT4 teic, + /* TEI (Data) remote side */ + OCT4 teid_remote, + /* TEI (Control) remote side */ + OCT4 teic_remote, + /* next to-be-sent GTP-C sequence number */ + uint16_t c_seq_nr, + /* next to-be-sent GTP-U sequence number */ + uint16_t d_seq_nr + } + type component GT_CT { port GTPC_PT GTPC; port GTPU_PT GTPU; @@ -23,7 +44,8 @@ module GGSN_Tests { var OCT4 g_sgsn_ip_c := '7f172a01'O; var OCT4 g_sgsn_ip_u := '7f172a01'O; /* FIXME: parse remName from config file */ - var GtpPeer g_peer := { connId := 0, remName := "127.0.0.6", remPort := GTP1C_PORT }; + var GtpPeer g_peer_c := { connId := 0, remName := "127.0.0.6", remPort := GTP1C_PORT }; + var GtpPeer g_peer_u := { connId := 0, remName := "127.0.0.6", remPort := GTP1U_PORT }; timer T_default := 3.0; } @@ -32,10 +54,11 @@ module GGSN_Tests { map(self:GTPC, system:GTPC); res := GTP_CodecPort_CtrlFunct.f_IPL4_listen(GTPC, g_bind_ip_c, GTP1C_PORT, {udp:={}}); log("GTP1C ConnectionID: ", res.connId); - g_peer.connId := res.connId; + g_peer_c.connId := res.connId; map(self:GTPU, system:GTPU); - GTP_CodecPort_CtrlFunct.f_GTPU_listen(GTPU, g_bind_ip_u, GTP1U_PORT, {udp:={}}); + res := GTP_CodecPort_CtrlFunct.f_GTPU_listen(GTPU, g_bind_ip_u, GTP1U_PORT, {udp:={}}); + g_peer_u.connId:= res.connId; } /* generalized GTP-C receive template */ @@ -59,7 +82,7 @@ module GGSN_Tests { } /* generalized GTP-C send template */ - template PDU_GTPC ts_GTP1C_PDU(OCT1 msg_type, OCT4 teid, GTPC_PDUs pdu) := { + template PDU_GTPC ts_GTP1C_PDU(OCT1 msg_type, OCT4 teid, GTPC_PDUs pdu, uint16_t seq_nr) := { /* N-PDU Number flag (PN) shall be set to '0'. A GTP-C receiver shall not return an * error if this flag is set to '1'. */ pn_bit := '0'B, @@ -75,7 +98,7 @@ module GGSN_Tests { lengthf := 0, /* we assume encoder overwrites this */ teid := teid, opt_part := { - sequenceNumber := '9801'O, + sequenceNumber := int2oct(seq_nr, 2), npduNumber := '00'O, nextExtHeader := '00'O, gTPC_extensionHeader_List := omit @@ -109,9 +132,9 @@ module GGSN_Tests { } /* master template for senidng a GTP-C echo response */ - template Gtp1cUnitdata ts_GTPC_PONG(GtpPeer peer, OCT1 rest_ctr) := { + template Gtp1cUnitdata ts_GTPC_PONG(GtpPeer peer, uint16_t seq, OCT1 rest_ctr) := { peer := peer, - gtpc := ts_GTP1C_PDU(echoResponse, '00000000'O, valueof(ts_EchoRespPDU(rest_ctr))) + gtpc := ts_GTP1C_PDU(echoResponse, '00000000'O, valueof(ts_EchoRespPDU(rest_ctr)), seq) } template EndUserAddress t_EuaIPv4(template OCT4 ip_addr) := { @@ -259,7 +282,8 @@ module GGSN_Tests { } } - template Gtp1cUnitdata ts_GTPC_CreatePDP(GtpPeer peer, hexstring imsi, OCT1 restart_ctr, OCT4 teid_data, + template Gtp1cUnitdata ts_GTPC_CreatePDP(GtpPeer peer, uint16_t seq, hexstring imsi, + OCT1 restart_ctr, OCT4 teid_data, OCT4 teid_ctrl, BIT4 nsapi, EndUserAddress eua, octetstring apn, octetstring sgsn_ip_sign, octetstring sgsn_ip_data, octetstring msisdn) := { @@ -267,13 +291,15 @@ module GGSN_Tests { gtpc := ts_GTP1C_PDU(createPDPContextRequest, '00000000'O, valueof(ts_CreatePdpPDU(imsi, restart_ctr, teid_data, teid_ctrl, nsapi, eua, apn, sgsn_ip_sign, - sgsn_ip_data, msisdn))) + sgsn_ip_data, msisdn)), seq) } function f_teardown_ind_IE(in template BIT1 ind) return template TearDownInd { - if (isvalue(ind)) { +/* + if (not isvalue(ind)) { return omit; } +*/ var TearDownInd ret := { type_gtpc := '13'O, tdInd := valueof(ind), @@ -300,11 +326,11 @@ module GGSN_Tests { } } - template Gtp1cUnitdata ts_GTPC_DeletePDP(GtpPeer peer, OCT4 teid, BIT4 nsapi, - template BIT1 teardown_ind) := { + template Gtp1cUnitdata ts_GTPC_DeletePDP(GtpPeer peer, uint16_t seq, OCT4 teid, + BIT4 nsapi, template BIT1 teardown_ind) := { peer := peer, gtpc := ts_GTP1C_PDU(deletePDPContextRequest, teid, - valueof(ts_DeletePdpPDU(nsapi, teardown_ind))) + valueof(ts_DeletePdpPDU(nsapi, teardown_ind)), seq) } @@ -327,15 +353,14 @@ module GGSN_Tests { } /* generalized GTP-U send template */ - template PDU_GTPU ts_GTP1U_PDU(OCT1 msg_type, OCT4 teid, GTPU_IEs ies, - template GTPU_Header_optional_part opt := omit) := { + template PDU_GTPU ts_GTP1U_PDU(OCT1 msg_type, uint16_t seq, OCT4 teid, GTPU_IEs ies) := { /* N-PDU Number flag (PN): the GTP-U header contains a meaningful N-PDU Number field if the PN * flag is set to 1. */ pn_bit := '0'B, /* we assume the encoder overwrites this if an optional part is given */ /* If the Sequence Number flag (S) is set to '1' the sequence number field is present and * meaningful otherwise it is set to '0'. For GTP-U messages Echo Request, Echo Response, * Error Indication and Supported Extension Headers Notification, the S flag shall be set to '1'. */ - s_bit := '0'B, /* we assume the encoder overwrites this if an optional part is given */ + s_bit := '1'B, /* we assume the encoder overwrites this if an optional part is given */ /* Extension header presence */ e_bit := '0'B, spare := '0'B, @@ -346,7 +371,12 @@ module GGSN_Tests { messageType := msg_type, lengthf := 0, /* we assume encoder overwrites this */ teid := teid, - opt_part := opt, + opt_part := { + sequenceNumber := int2oct(seq, 2), + npduNumber := '00'O, + nextExtHeader := '00'O, + gTPU_extensionHeader_List := omit + }, gtpu_IEs := ies } @@ -370,43 +400,94 @@ module GGSN_Tests { } /* master template for sending a GTP-U echo response */ - template Gtp1uUnitdata ts_GTPU_PONG(GtpPeer peer, OCT1 rest_ctr) := { + template Gtp1uUnitdata ts_GTPU_PONG(GtpPeer peer, uint16_t seq, OCT1 rest_ctr) := { peer := peer, - gtpu := ts_GTP1U_PDU(echoResponse, '00000000'O, valueof(ts_UEchoRespPDU(rest_ctr))) + gtpu := ts_GTP1U_PDU(echoResponse, seq, '00000000'O, valueof(ts_UEchoRespPDU(rest_ctr))) } - template PDU_GTPU ts_GTP1U_GPDU(OCT4 teid, octetstring data) := - ts_GTP1U_PDU('FF'O, teid, { g_PDU_IEs := { data := data }}); + /* master template for sending a GTP-U user plane data */ + template Gtp1uUnitdata ts_GTP1U_GPDU(GtpPeer peer, uint16_t seq, OCT4 teid, octetstring data) := { + peer := peer, + gtpu := ts_GTP1U_PDU('FF'O, seq, teid, { g_PDU_IEs := { data := data }}) + } /* Altstep implementing responses to any incoming echo requests */ altstep pingpong() runs on GT_CT { var Gtp1cUnitdata ud; var Gtp1uUnitdata udu; [] GTPC.receive(tr_GTPC_PING(?)) -> value ud { - GTPC.send(ts_GTPC_PONG(ud.peer, '00'O)); + var uint16_t seq := oct2int(ud.gtpc.opt_part.sequenceNumber); + GTPC.send(ts_GTPC_PONG(ud.peer, seq, '00'O)); repeat; }; [] GTPU.receive(tr_GTPU_PING(?)) -> value udu { - GTPU.send(ts_GTPU_PONG(udu.peer, '00'O)); + var uint16_t seq := oct2int(udu.gtpu.opt_part.sequenceNumber); + GTPU.send(ts_GTPU_PONG(udu.peer, seq, '00'O)); }; [] T_default.timeout { setverdict(fail); }; } + /* 'internet' in DNS encoding */ template octetstring t_ApnInternet := '08696E7465726E6574'O; - function f_pdp_ctx_act(hexstring imsi, BIT4 nsapi, EndUserAddress eua, octetstring apn, octetstring msisdn) runs on GT_CT { + /* return random integer between 0 and max */ + function f_rnd_int(integer max) return integer { + return float2int(rnd()*int2float(max)); + } + + /* return random NSAPI */ + function f_rnd_nsapi() return BIT4 { + return int2bit(f_rnd_int(16), 4); + } + + /* return random TEI[DC] */ + function f_rnd_tei() return OCT4 { + return int2oct(f_rnd_int(4294967296), 4); + } + + /* define an (internal) representation of a PDP context */ + template PdpContext t_DefinePDP(hexstring imsi, octetstring msisdn, octetstring apn, + EndUserAddress eua) := { + imsi := imsi, + msisdn := msisdn, + nsapi := f_rnd_nsapi(), + apn := apn, + eua := eua, + teid := f_rnd_tei(), + teic := f_rnd_tei(), + d_seq_nr := 0, + c_seq_nr := 0 + } + + /* send GTP-C for a given context and increment sequence number */ + function f_send_gtpc(inout PdpContext ctx, in template Gtp1cUnitdata data) runs on GT_CT { + GTPC.send(data); + ctx.c_seq_nr := ctx.c_seq_nr + 1; + } + + /* send GTP-U for a given context and increment sequence number */ + function f_send_gtpu(inout PdpContext ctx, in template Gtp1uUnitdata data) runs on GT_CT { + GTPU.send(data); + ctx.d_seq_nr := ctx.d_seq_nr + 1; + } + + /* send a PDP context activation */ + function f_pdp_ctx_act(inout PdpContext ctx) runs on GT_CT { var Gtp1cUnitdata ud; - var octetstring teid := '01020304'O; var default d; log("sending CreatePDP"); - GTPC.send(ts_GTPC_CreatePDP(g_peer, imsi, g_restart_ctr, teid, teid, nsapi, eua, apn, g_sgsn_ip_c, g_sgsn_ip_u, msisdn)); + f_send_gtpc(ctx, ts_GTPC_CreatePDP(g_peer_c, ctx.c_seq_nr, ctx.imsi, g_restart_ctr, + ctx.teid, ctx.teic, ctx.nsapi, ctx.eua, ctx.apn, + g_sgsn_ip_c, g_sgsn_ip_u, ctx.msisdn)); T_default.start; - d := activate(pingpong()); alt { - [] GTPC.receive(tr_GTPC_MsgType(g_peer, createPDPContextResponse, teid)) -> value ud { - if (ud.gtpc.gtpc_pdu.createPDPContextResponse.cause.causevalue == '80'O) { + [] GTPC.receive(tr_GTPC_MsgType(g_peer_c, createPDPContextResponse, ctx.teic)) -> value ud { + var CreatePDPContextResponse cpr := ud.gtpc.gtpc_pdu.createPDPContextResponse; + if (cpr.cause.causevalue == '80'O) { + ctx.teid_remote := cpr.teidDataI.teidDataI; + ctx.teic_remote := cpr.teidControlPlane.teidControlPlane; setverdict(pass); } else { setverdict(fail); @@ -414,18 +495,18 @@ module GGSN_Tests { } } deactivate(d); + T_default.stop; } - function f_pdp_ctx_del(OCT4 teid, BIT4 nsapi, template BIT1 teardown_ind) runs on GT_CT { + function f_pdp_ctx_del(PdpContext ctx, template BIT1 teardown_ind) runs on GT_CT { var Gtp1cUnitdata ud; var default d; - GTPC.send(ts_GTPC_DeletePDP(g_peer, teid, nsapi, teardown_ind)); + f_send_gtpc(ctx, ts_GTPC_DeletePDP(g_peer_c, ctx.c_seq_nr, ctx.teic_remote, ctx.nsapi, teardown_ind)); T_default.start; - d := activate(pingpong()); alt { - [] GTPC.receive(tr_GTPC_MsgType(g_peer, deletePDPContextResponse, teid)) -> value ud { + [] GTPC.receive(tr_GTPC_MsgType(g_peer_c, deletePDPContextResponse, ctx.teic)) -> value ud { if (ud.gtpc.gtpc_pdu.deletePDPContextResponse.cause.causevalue == '80'O) { setverdict(pass); } else { @@ -434,23 +515,28 @@ module GGSN_Tests { } } deactivate(d); + T_default.stop; } + /* IPv6 router solicitation fe80::2 -> ff02::2 from 02:88:b5:1f:25:59 */ + const octetstring c_router_solicit := '6000000000103afffe800000000000000000000000000002ff02000000000000000000000000000285009f2b0000000001010288b51f2559'O; + /* IPv6 neighbor solicitation fe80::2 -> ff02::1:ff00:2 from 02:88:b5:1f:25:59 */ + const octetstring c_neigh_solicit:= '6000000000203afffe800000000000000000000000000002ff0200000000000000000001ff00000287009f9600000000fe80000000000000000000000000000201010288b51f2559'O; testcase TC_activate_pdp4() runs on GT_CT { f_init(); - var hexstring imsi := '262420123456789'H; - var octetstring msisdn := '1234'O; - f_pdp_ctx_act(imsi, '0010'B, valueof(t_EuaIPv4Dyn), valueof(t_ApnInternet), msisdn); + var PdpContext ctx := valueof(t_DefinePDP('262420123456789'H, '1234'O, valueof(t_ApnInternet), valueof(t_EuaIPv4Dyn))); + f_pdp_ctx_act(ctx); } testcase TC_activate_pdp6() runs on GT_CT { f_init(); - var hexstring imsi := '262420123456789'H; - var octetstring msisdn := '1234'O; - f_pdp_ctx_act(imsi, '0010'B, valueof(t_EuaIPv6Dyn), valueof(t_ApnInternet), msisdn); + var PdpContext ctx := valueof(t_DefinePDP('262420123456789'H, '1234'O, valueof(t_ApnInternet), valueof(t_EuaIPv6Dyn))); + f_pdp_ctx_act(ctx); + f_send_gtpu(ctx, ts_GTP1U_GPDU(g_peer_u, ctx.d_seq_nr, ctx.teid_remote, c_router_solicit)); + f_send_gtpu(ctx, ts_GTP1U_GPDU(g_peer_u, ctx.d_seq_nr, ctx.teid_remote, c_neigh_solicit)); + f_pdp_ctx_del(ctx, '1'B); } - control { execute(TC_activate_pdp4()); execute(TC_activate_pdp6()); -- cgit v1.2.3