module Test { import from General_Types all; import from Osmocom_Types all; import from GSM_Types all; import from GSM_RR_Types all; import from BSSGP_Helper_Functions all; import from BSSGP_Types all; import from BSSGP_Emulation all; import from NS_Types all; import from NS_Emulation all; import from LLC_Types all; import from RLCMAC_Types all; import from RLCMAC_CSN1_Types all; import from LAPDm_RAW_PT all; type record MmContext { octetstring imsi optional, BssgpTlli tlli, uint9_t n_u }; type component dummy_CT { var lapdm_CT lapdm_component; port LAPDm_PT L1; port BSSGP_PT BSSGP; var NS_CT ns_component; var BSSGP_CT bssgp_component; var MmContext g_mmctx := { tlli := 0, n_u := 0 }; var boolean g_initialized := false; } function f_init() runs on dummy_CT { if (g_initialized == true) { return; } g_initialized := true; /* create a new NS component */ ns_component := NS_CT.create; bssgp_component := BSSGP_CT.create; /* connect our BSSGP port to the BSSGP Emulation */ connect(self:BSSGP, bssgp_component:BSSGP_SP); /* connect lower-end of BSSGP with BSSGP_CODEC_PORT (maps to NS_PT*/ connect(bssgp_component:BSCP, ns_component:NS_SP); /* connect lower-end of NS emulation to NS_CODEC_PORT (on top of IPl4) */ map(ns_component:NSCP, system:NS_CODEC_PORT); ns_component.start(NSStart()); bssgp_component.start(BssgpStart()); lapdm_component := lapdm_CT.create; connect(self:L1, lapdm_component:LAPDM_SP); map(lapdm_component:L1CTL, system:L1CTL); lapdm_component.start(LAPDmStart()); } function f_bssgp_assert_prepr(in octetstring a, in octetstring b) { log("BSSGP Input: ", a); log("BSSGP Expected: ", b); var octetstring a_preprocessed := f_BSSGP_expand_len(a); log("BSSGP Preprocessed: ", a_preprocessed); if (a_preprocessed != b) { setverdict(fail); } else { setverdict(pass); } } function f_bssgp_dec_and_log(in octetstring inp) { log("BSSGP Input: ", inp); var octetstring inp_p := f_BSSGP_expand_len(inp); log("BSSGP Preprocessed: ", inp_p); var BssgpPdu dec := dec_BssgpPdu(inp_p); log("BSSGP Decoded: ", dec); } testcase TC_selftest_bssgp() runs on dummy_CT { const octetstring c_bvc_reset_pcu := '2204820000078108088832f44000c80051e0'O; const octetstring c_bvc_reset_q := '2204820000078100'O; const octetstring c_status_pcu := '4107810515882204820000078103'O; const octetstring c_reset_ack_q := '2304820000'O; const octetstring c_reset_ack_pcu := '23048200c4'O; const octetstring c_unblock_pcu := '24048200c4'O; const octetstring c_unblock_ack_q := '25048200c4'O; const octetstring c_fc_bvc_pcu := '261e8101058200fa038200c8018200fa1c8200c806820000'O; const octetstring c_fc_bvc_ack_q := '271e8101'O; const octetstring c_gmm_mo_att_req := '01bb146ddd000004088832f44000c80051e000800e003b01c001080103e5e000110a0005f4fb146ddd32f44000c8001d1b53432b37159ef9090070000dd9c6321200e00019b32c642401c0002017057bf0ec'O; const octetstring c_gmm_mt_ac_req := '00bb146ddd0050001682ffff0a8204030e9c41c001081200102198c72477ea104895e8b959acc58b108182f4d045'O; const octetstring c_gmm_mo_ac_resp := '01bb146ddd000004088832f44000c80051e000800e000e01c00508130122fa361f5fdd623d'O; const octetstring c_gmm_mt_att_acc := '00bb146ddd0050001682ffff0a8204030e9841c005080201340432f44000c8001805f4fb146ddd0967d0'O; const octetstring c_gmm_mt_det_req := '00bb146ddd0050001682ffff0a8204030e8941c00908050215f0b6'O; const octetstring c_gmm_mo_att_cpl := '01fb146ddd000004088832f44000c80051e000800e000801c009080339d7bc'O; /* single byte length to two byte length */ f_bssgp_assert_prepr('04058101'O, '0405000101'O); f_bssgp_assert_prepr('040589000102030405060708'O, '04050009000102030405060708'O); /* two byte length to two byte length */ f_bssgp_assert_prepr('0405000101'O, '0405000101'O); /* special case: DL-UD + UL-UD */ f_bssgp_assert_prepr('00aabbccddeeffaa29822342'O, '00aabbccddeeffaa2900022342'O); f_bssgp_assert_prepr('01aabbccddeeffaa29822342'O, '01aabbccddeeffaa2900022342'O); /* multiple TLVs */ f_bssgp_assert_prepr('234281aa4382bbbb'O, '23420001aa430002bbbb'O); f_bssgp_assert_prepr('230080'O, '23000000'O); f_bssgp_dec_and_log(c_bvc_reset_pcu); f_bssgp_dec_and_log(c_bvc_reset_q); f_bssgp_dec_and_log(c_status_pcu); f_bssgp_dec_and_log(c_reset_ack_q); f_bssgp_dec_and_log(c_reset_ack_pcu); f_bssgp_dec_and_log(c_unblock_pcu); f_bssgp_dec_and_log(c_unblock_ack_q); f_bssgp_dec_and_log(c_fc_bvc_pcu); f_bssgp_dec_and_log(c_fc_bvc_ack_q); f_bssgp_dec_and_log(c_gmm_mo_att_req); f_bssgp_dec_and_log(c_gmm_mt_ac_req); f_bssgp_dec_and_log(c_gmm_mo_ac_resp); f_bssgp_dec_and_log(c_gmm_mt_att_acc); f_bssgp_dec_and_log(c_gmm_mt_det_req); f_bssgp_dec_and_log(c_gmm_mo_att_cpl); log(t_BSSGP_PS_PAGING_IMSI(196, '262420123456789'H)); } function f_ns_assert_prepr(in octetstring a, in octetstring b) { log("NS Input: ", a); log("NS Expected: ", b); var octetstring a_preprocessed := f_NS_expand_len(a); log("NS Preprocessed: ", a_preprocessed); if (a_preprocessed != b) { setverdict(fail); } else { setverdict(pass); } } function f_ns_dec_and_log(in octetstring inp) { log("NS Input: ", inp); var octetstring inp_p := f_NS_expand_len(inp); log("NS Preprocessed: ", inp_p); var NsPdu dec := dec_NsPdu(inp_p); log("NS Decoded: ", dec); } testcase TC_selftest_ns() runs on dummy_CT { const octetstring c_ns_reset_pcu := '000000c4271e813d'O; /* single byte length to two byte length */ f_ns_assert_prepr('04058101'O, '0405000101'O); f_ns_assert_prepr('040589000102030405060708'O, '04050009000102030405060708'O); /* two byte length to two byte length */ f_ns_assert_prepr('0405000101'O, '0405000101'O); /* special case: NS-UNITDATA */ f_ns_assert_prepr('00aabbccddeeffaa29822342'O, '00aabbccddeeffaa2900022342'O); /* multiple TLVs */ f_ns_assert_prepr('234281aa4382bbbb'O, '23420001aa430002bbbb'O); /* zero-length */ f_ns_assert_prepr('230080'O, '23000000'O); f_ns_dec_and_log(c_ns_reset_pcu); } const BssgpQosProfile c_DefaultQos := { r := 80, spare := '00'B, c_r := false, t := false, a := false, precedence := 0 }; template BssgpTLV c_DefaultLifetimeTLV := t_BSSGP_IE_Lifetime(65535); template BssgpTLV t_BSSGP_IE_LLC_PDU(LlcPdu llc) := t_BssgpIE(LLC_PDU, { other := f_LLC_append_fcs(enc_LlcPdu(llc)) }); template BssgpPdu t_BSSGP_DL_UD(BssgpTlli tlli, LlcPdu llc, BssgpTLVs opt_tlvs := {}) := { pdu_type := DL_UNITDATA, u := { dl_unitdata := { tlli := tlli, qos_profile := c_DefaultQos, pdu_lifetime := c_DefaultLifetimeTLV, //tlvs := opt_tlvs & { t_BSSGP_IE_LLC_PDU(llc) } tlvs := { t_BSSGP_IE_LLC_PDU(llc) } } } }; template BssgpPdu t_BSSGP_UL_UD(template BssgpTlli tlli, template BssgpCellId cell_id, template octetstring payload) := { pdu_type := UL_UNITDATA, u := { ul_unitdata := { tlli := tlli, qos_profile := ?, cell_id := { iei := CELL_ID, len := 8, u := { cell_id := cell_id } }, tlvs := { { iei := ALIGNMENT_OCTETS, len := ?, u := { other := ? } }, { iei := LLC_PDU, len := ?, u := { other := payload } } } } } } template BssgpPdu t_BSSGP_PS_PAGING_IMSI(BssgpBvci bvci, hexstring imsi) := { pdu_type := PAGING_PS, u := { other := { tlvs := { t_BSSGP_IE_Imsi(imsi), t_BSSGP_IE_Bvci(bvci), t_BSSGP_IE_Qos(c_DefaultQos) } } } }; template BssgpPdu t_BSSGP_PS_PAGING_PTMSI(BssgpBvci bvci, hexstring imsi, GsmTmsi ptmsi) := { pdu_type := PAGING_PS, u := { other := { tlvs := { t_BSSGP_IE_Imsi(imsi), t_BSSGP_IE_Bvci(bvci), t_BSSGP_IE_Qos(c_DefaultQos), t_BSSGP_IE_Tmsi(ptmsi) } } } }; const octetstring gmm_auth_req := '081200102198c72477ea104895e8b959acc58b108182'O; function tx_gmm(boolean c_r, in octetstring gmm_pdu, LlcSapi sapi := LLC_SAPI_GMM) runs on dummy_CT { var LlcPdu llc; //log("GMM Tx: ", dec_PDU_L3_SGSN_MS(gmm_pdu)); log(c_r, g_mmctx.n_u, gmm_pdu, sapi); log(t_LLC_UI(c_r, g_mmctx.n_u, gmm_pdu, sapi)); llc := valueof(t_LLC_UI(c_r, g_mmctx.n_u, gmm_pdu, sapi)); log(llc); g_mmctx.n_u := g_mmctx.n_u + 1; log(t_BSSGP_DL_UD(g_mmctx.tlli, llc)); BSSGP.send(t_BSSGP_DL_UD(g_mmctx.tlli, llc)); } function f_bssgp_establish() runs on dummy_CT { timer T:= 60.0; f_init(); T.start alt { [] BSSGP.receive(t_BssgpStsInd(?, ?, BVC_S_UNBLOCKED)) { } [] BSSGP.receive { repeat; } [] T.timeout { setverdict(fail); } } T.stop log("BSSGP successfully initialized"); } testcase TC_paging() runs on dummy_CT { var hexstring imsi := '262420123456789'H; var BssgpBvci bvci := 196; var GsmTmsi tmsi := hex2int('01234567'H); f_bssgp_establish(); BSSGP.send(t_BSSGP_PS_PAGING_IMSI(bvci, imsi)); BSSGP.send(t_BSSGP_PS_PAGING_PTMSI(bvci, imsi, tmsi)); while (true) { var BssgpPdu pdu; alt { [] BSSGP.receive(BssgpPdu:?) -> value pdu { log("BSSGP Rx: ", pdu); } [] BSSGP.receive(t_BssgpStsInd(?, ?, BVC_S_UNBLOCKED)) { repeat; } [] BSSGP.receive { repeat; } } } } function f_establish_ul_tbf() runs on dummy_CT { timer T := 5.0; var BCCH_tune_req tune_req := { { false, 871 }, true }; L1.send(tune_req); /* FIXME: wait for confirm */ var TBF_establish_req est_req := { ra := hex2int('7B'H) }; L1.send(est_req); T.start; /* FIXME: wait for confirm */ alt { [] L1.receive(TBF_establish_res:?) {} [] L1.receive { repeat; } [] T.timeout { setverdict(fail); } } T.stop; } template RlcmacUlBlock t_RLCMAC_UL_DATA(template uint5_t tfi, template uint4_t cv, template uint7_t bsn, template LlcBlocks blocks := {}, template boolean stall := false) := { data := { mac_hdr := { payload_type := MAC_PT_RLC_DATA, countdown := cv, stall_ind := false, retry := false, spare := '0'B, pfi_ind := false, tfi := tfi, tlli_ind := false, bsn := bsn, e := false }, tlli := omit, pfi := omit, blocks := blocks } } template RlcmacUlBlock t_RLCMAC_UL_DATA_TLLI(template uint5_t tfi, template uint4_t cv, template uint7_t bsn, template LlcBlocks blocks := {}, template boolean stall := false, template GprsTlli tlli) modifies t_RLCMAC_UL_DATA := { data := { tlli := tlli } } template DlMacHeader t_RLCMAC_DlMacH(template MacPayloadType pt, template MacRrbp rrbp, template uint3_t usf) := { payload_type := pt, rrbp := rrbp, rrbp_valid := ispresent(rrbp), usf := usf } template RlcmacDlBlock tr_RLCMAC_ACK_NACK(template uint5_t ul_tfi, template GprsTlli tlli := ?) := { ctrl := { mac_hdr := { payload_type := (MAC_PT_RLCMAC_NO_OPT, MAC_PT_RLCMAC_OPT), rrbp:= ?, rrbp_valid := true, usf := ? }, opt := *, payload := { msg_type := PACKET_UL_ACK_NACK, u := { ul_ack_nack := { page_mode := ?, msg_excape := ?, uplink_tfi := ul_tfi, is_egprs := '0'B, gprs := { ch_coding_cmd := ?, ack_nack_desc := ?, cont_res_tlli_present := ?, cont_res_tlli := tlli, pkt_ta_present := ?, pkt_ta := *, pwr_ctrl_present := ?, pwr_ctrl := * } } } } } } template UlMacCtrlHeader t_RLCMAC_UlMacCtrlH(template MacPayloadType pt, template boolean retry := false) := { payload_type := pt, spare := '00000'B, retry := retry } template RlcmacUlBlock ts_RLCMAC_CTRL_ACK(GprsTlli tlli, CtrlAck ack := MS_RCVD_TWO_RLC_SAME_RTI_DIFF_RBSN) := { ctrl := { mac_hdr := t_RLCMAC_UlMacCtrlH(MAC_PT_RLCMAC_NO_OPT), payload := { msg_type := PACKET_CONTROL_ACK, u := { ctrl_ack := { tlli := tlli, ctrl_ack := ack } } } } } template LlcBlock t_RLCMAC_LLCBLOCK(octetstring data, BIT1 more := '0'B, boolean e := true) := { hdr := { length_ind := lengthof(data), more := more, e := e }, payload := data } function f_random_tlli() return GprsTlli { var GprsTlli tlli := float2int(rnd()* 4294967295.0); return tlli; } function f_single_ul_block(GprsCodingScheme cs) runs on dummy_CT { var GprsTlli tlli := f_random_tlli(); var octetstring payload := '01020304'O; /* establish upling TBF */ f_establish_ul_tbf(); /* Generate LLC PDU consisting of single RLC block and send it via simulated MS */ var template RlcmacUlBlock blk := t_RLCMAC_UL_DATA_TLLI(0, 0, 0, {t_RLCMAC_LLCBLOCK(payload)}, false, tlli); L1.send(RLCMAC_ph_data_req:{tbf_id := 0, cs := cs, block := blk}); /* ensure that this LLC-PDU arrives from the right TLLI at the (simulated) SGSN */ BSSGP.receive(t_BSSGP_UL_UD(tlli, ?, payload)); /* ensure the MS eceives an UL_ACK_NACK */ alt { [] L1.receive(RLCMAC_ph_data_ind:{cs:=?, block:=tr_RLCMAC_ACK_NACK(0, tlli)}) { }; [] L1.receive { repeat; }; } log("found matching ACK/NACK"); /* send CTRL ACK in uplink */ //L1.send(FIXME); } testcase TC_rach() runs on dummy_CT { var hexstring imsi := '262420123456789'H; var BssgpBvci bvci := 196; var GsmTmsi tmsi := hex2int('01234567'H); f_init(); f_bssgp_establish(); f_single_ul_block(CS1); while (true) { var BssgpPdu pdu; var RLCMAC_ph_data_ind dl_msg; alt { [] BSSGP.receive(BssgpPdu:?) -> value pdu { log("BSSGP Rx: ", pdu); } [] BSSGP.receive(t_BssgpStsInd(?, ?, BVC_S_UNBLOCKED)) { repeat; } [] BSSGP.receive { repeat; } [] L1.receive(RLCMAC_ph_data_ind:?) -> value dl_msg { log("L1 DL: ", dl_msg); } } } } testcase TC_nsem() runs on dummy_CT { f_bssgp_establish(); while (true) { var BssgpPdu pdu; alt { [] BSSGP.receive(BssgpPdu:?) -> value pdu { log("BSSGP Rx: ", pdu); //log("GMM Rx: ", dec_PDU_L3_MS_SGSN(pdu.payload)); g_mmctx.tlli := pdu.u.ul_unitdata.tlli; tx_gmm(LLC_CR_DL_CMD, gmm_auth_req); } [] BSSGP.receive(t_BssgpStsInd(?, ?, BVC_S_UNBLOCKED)) { repeat; } [] BSSGP.receive { repeat; } } } } function f_llc_dec_and_log(in octetstring inp) { log("LLC Input: ", inp); var LlcPdu dec := dec_LlcPdu(inp); log("LLC Decoded: ", dec); } function f_llc_assert(in octetstring a, in octetstring b) { log("LLC Input: ", a); log("LLC Expected: ", b); if (a != b) { setverdict(fail); } else { setverdict(pass); } } testcase TC_selftest_llc() runs on dummy_CT { const octetstring c_gmm_att_pcu := '01c001080103e5e000210a0005f4fb146ddd32f44000c8001d1b53432b37159ef9090070000dd9c6321200e00019b32c642401c00020170580460b'O; const octetstring c_gmm_att_pcu_nofcs := '01c001080103e5e000210a0005f4fb146ddd32f44000c8001d1b53432b37159ef9090070000dd9c6321200e00019b32c642401c000201705'O; const octetstring c_ctrl_ui := 'c001'O; log(dec_LlcCtrlUnion(c_ctrl_ui)); f_llc_assert(enc_LlcCtrlUnion({ ui := { presence := '110'B, spare := '00'B, n_u := 0, e := false, pm := true } }), c_ctrl_ui); f_llc_dec_and_log(c_gmm_att_pcu); f_llc_assert(f_LLC_append_fcs(c_gmm_att_pcu_nofcs), c_gmm_att_pcu); log(valueof(t_LLC_UI(LLC_CR_DL_CMD, g_mmctx.n_u, gmm_auth_req, LLC_SAPI_GMM))); log(t_LLC_UI(LLC_CR_DL_CMD, g_mmctx.n_u, gmm_auth_req, LLC_SAPI_GMM)); } testcase TC_selftest_rlcmac() runs on dummy_CT { var RlcmacDlCtrlBlock dcb; var RlcmacUlCtrlBlock ucb; const octetstring c_dl_ul_ack_nack := '40240080400000000000000077628dbba14b2b2b2b2b2b'O; const octetstring c_dl_data := '0f00007341c001081200102198c72477ea104895e8b959acc58b108182f4d0454300'O; const octetstring c_dl_data2 := '070002165dc0012b2b2b43c0012b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b00'O; const octetstring c_ul_ctrl_ack := '4006ec51b7772b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b'O; const octetstring c_ul_dl_ack_nack := '4008004000000000000000701000edc0000b2b2b2b2b2b'O; const octetstring c_dl_ul_assign := '482857628dbbaf0126e68800082b2b2b2b2b2b2b2b2b2b'O; log(c_dl_ul_ack_nack); dcb := dec_RlcmacDlCtrlBlock(c_dl_ul_ack_nack); log(dcb); //log(dec_RlcmacDlCtrlMsg(dcb.payload)); f_rlcmac_dld_decenc(c_dl_data); f_rlcmac_dld_decenc(c_dl_data2); log(c_ul_ctrl_ack); ucb := dec_RlcmacUlCtrlBlock(c_ul_ctrl_ack); log(ucb); //log(dec_RlcmacUlCtrlMsg(ucb.payload)); log(c_ul_dl_ack_nack); ucb := dec_RlcmacUlCtrlBlock(c_ul_dl_ack_nack); log(ucb); //log(dec_RlcmacUlCtrlMsg(ucb.payload)); log(c_dl_ul_assign); dcb := dec_RlcmacDlCtrlBlock(c_dl_ul_assign); log(dcb); //log(dec_RlcmacDlCtrlMsg(dcb.payload)); const octetstring c_uld_tlli_noext := '080101a61cab5201c001080103e5e000310a0005f4e61cab5232f44000c8001d1b00'O; f_rlcmac_uld_decenc(c_uld_tlli_noext); const octetstring c_uld_tlli_ext7pad := '0001041da61cab5200201705a96e102b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b00'O; log("ULD_decenc"); f_rlcmac_uld_decenc(c_uld_tlli_ext7pad); log("UL_decenc"); f_rlcmac_ul_decenc(c_uld_tlli_ext7pad); f_rlcmac_ul_decenc(c_ul_dl_ack_nack); } function f_rlcmac_ul_decenc(in octetstring buf) { log("=================================="); log("In: ", buf); var RlcmacUlBlock udb := dec_RlcmacUlBlock(buf); log("Dec: ", udb); var octetstring enc := enc_RlcmacUlBlock(udb); log("Enc: ", enc); if (enc != buf) { setverdict(fail, "Re-encoded data doesn't equal input data"); } } function f_rlcmac_uld_decenc(in octetstring buf) { log("=================================="); log("In: ", buf); var RlcmacUlDataBlock udb := dec_RlcmacUlDataBlock(buf); log("Dec: ", udb); var octetstring enc := enc_RlcmacUlDataBlock(udb); log("Enc: ", enc); if (enc != buf) { setverdict(fail, "Re-encoded data doesn't equal input data"); } } function f_rlcmac_dld_decenc(in octetstring buf) { log("=================================="); log("In: ", buf); var RlcmacDlDataBlock udb := dec_RlcmacDlDataBlock(buf); log("Dec: ", udb); var octetstring enc := enc_RlcmacDlDataBlock(udb); log("Enc: ", enc); if (enc != buf) { setverdict(fail, "Re-encoded data doesn't equal input data"); } } testcase TC_selftest_rr() runs on dummy_CT { //const octetstring c_paging_none := '06210001F02B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B'O const octetstring c_paging_none := '1506210001F0'O; const octetstring c_ia_tbf := '2d063f100fe3677bd8440000c800100b2b2b2b2b2b2b2b'O log(c_paging_none); log(dec_GsmRrMessage(c_paging_none)); log(c_ia_tbf); log(dec_GsmRrMessage(c_ia_tbf)); } control { execute(TC_selftest_bssgp()); execute(TC_selftest_ns()); execute(TC_selftest_llc()); execute(TC_selftest_rr()); execute(TC_selftest_rlcmac()); execute(TC_nsem()); execute(TC_paging()); } };