321 lines
8.5 KiB
Plaintext
321 lines
8.5 KiB
Plaintext
module FR_Tests {
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import from General_Types all;
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import from Osmocom_Types all;
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import from Osmocom_Gb_Types all;
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import from NS_Emulation all;
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import from BSSGP_Emulation all;
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import from LLC_Types all;
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import from LLC_Templates all;
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modulepar {
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/* NS transport layer MTU (NS header and anything after it) */
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integer mp_ns_mtu := 1500;
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/* number of BVCs to bring up in one Gb instance */
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integer mp_num_bvc := 10;
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/* number of UEs to start in each PTP BVC */
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integer mp_num_ue_in_bvc := 10;
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/* NS configurations; one per NSE; each with any number of NSVC */
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NSConfigurations mp_nsconfig := {
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{
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nsei := 123,
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role_sgsn := false,
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handle_sns := false,
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nsvc := {
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{
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provider := {
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fr := {
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netdev := "hdlc1",
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dlci := 21
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}
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},
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nsvci := 101
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}, {
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provider := {
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fr := {
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netdev := "hdlc2",
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dlci := 22
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}
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},
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nsvci := 102
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}, {
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provider := {
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fr := {
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netdev := "hdlc3",
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dlci := 23
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}
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},
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nsvci := 103
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}, {
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provider := {
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fr := {
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netdev := "hdlc4",
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dlci := 24
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}
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},
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nsvci := 104
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}
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}
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}
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};
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}
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/* 4 bytes NS-UNITDATA,
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* >= 12 Bytes DL-UNITDATA or 18 bytes BSSGP UL-UNITDATA
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* 3 bytes LLC UI header
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* 3 bytes LLC FCS
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* <= 3 bytes optional padding
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* --> at least 31 bytes required
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*/
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const integer c_LLC_BSSGP_NS_overhead := 40;
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type record GbInstance {
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NS_CT vc_NS,
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BSSGP_CT vc_BSSGP,
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BssgpConfig cfg
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};
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type record of GbInstance GbInstances;
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type record of NSConfiguration NSConfigurations;
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type record of BssgpCellId BssgpCellIds;
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type component test_CT {
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var GbInstances g_gb;
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port BSSGP_CT_PROC_PT BSSGP_PROC[16];
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};
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/* initialize one Gb interface */
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private function f_init_gb(inout GbInstance gb, charstring id, integer offset) runs on test_CT {
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var charstring id_idx := id & int2str(offset);
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gb.vc_NS := NS_CT.create(id_idx & "-NSemu") alive;
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gb.vc_BSSGP := BSSGP_CT.create(id_idx & "-BSSGPemu") alive;
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connect(gb.vc_BSSGP:BSCP, gb.vc_NS:NS_SP);
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gb.vc_NS.start(NSStart(mp_nsconfig[offset], id_idx));
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connect(self:BSSGP_PROC[offset], gb.vc_BSSGP:PROC);
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gb.vc_BSSGP.start(BssgpStart(gb.cfg, testcasename()));
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}
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/* generate a BVC dynamically, using distinct number ranges for BVCI, CID, LAC, ... */
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private function f_gen_bvc(integer base, integer idx) return BssgpBvcConfig {
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var BssgpBvcConfig bvc := {
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bvci := base + 100 + idx,
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cell_id := {
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ra_id := {
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lai := {
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mcc_mnc := '262F42'H,
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lac := base + 300 + idx
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},
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rac := 1
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},
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cell_id := base + 600 + idx
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},
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depth := BSSGP_DECODE_DEPTH_LLC,
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create_cb := refers(BSSGP_Emulation.DefaultCreateCallback)
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};
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return bvc;
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}
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/***********************************************************************
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* UE simulation component
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***********************************************************************/
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type component UE_CT extends BSSGP_Client_CT {
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var UE_Pars g_pars;
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timer g_Tguard;
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var LLC_Entities llc;
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}
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type record of UE_CT ro_ue;
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type record UE_Pars {
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hexstring imsi,
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OCT4 tlli,
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float tguard,
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BssgpBvci bvci,
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BssgpCellId cell_id
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};
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type function void_fn(charstring id) runs on UE_CT;
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private altstep as_ue_tguard() runs on UE_CT {
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[] g_Tguard.timeout {
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setverdict(fail, "Tguard timeout after ", g_pars.tguard);
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self.stop;
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}
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}
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/* first function executed in UE_CT; creates LLC context, registers with BSSGP, starts Tguard */
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function f_handler_init(void_fn fn, charstring id, UE_Pars pars) runs on UE_CT {
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g_pars := pars;
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llc := f_llc_create(false);
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f_bssgp_client_register(g_pars.imsi, g_pars.tlli);
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g_Tguard.start(g_pars.tguard);
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activate(as_ue_tguard());
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log(id, " Waiting for BVC-UNBLOCK");
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timer T := 15.0;
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T.start;
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alt {
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[] BSSGP[0].receive(BssgpStatusIndication:{*,?,BVC_S_UNBLOCKED}) { }
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[] BSSGP[0].receive { repeat; }
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[] T.timeout {
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setverdict(fail, id, " Timeout waiting for BVC-UNBLOCK");
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self.stop;
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}
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}
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log (id, " Entering main loop");
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fn.apply(id);
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log (id, "Leaving main loop");
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f_bssgp_client_unregister(g_pars.imsi);
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}
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/* start a single UE component; connect it to BSSGP */
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function f_start_ue(void_fn fn, charstring id, BssgpBvcConfig bvc, integer imsi_suffix, BSSGP_BVC_CT bvc_comp, float t_guard := 40.0)
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runs on test_CT return UE_CT
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{
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var UE_CT ue_comp;
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var UE_Pars ue_pars := {
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imsi := f_gen_imsi(imsi_suffix),
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tlli := f_gprs_tlli_random(),
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tguard := t_guard,
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bvci := bvc.bvci,
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cell_id := bvc.cell_id
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};
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ue_comp := UE_CT.create(id);
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connect(ue_comp:BSSGP[0], bvc_comp:BSSGP_SP);
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connect(ue_comp:BSSGP_SIG[0], bvc_comp:BSSGP_SP_SIG);
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connect(ue_comp:BSSGP_PROC[0], bvc_comp:BSSGP_PROC);
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ue_comp.start(f_handler_init(fn, id, ue_pars));
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return ue_comp;
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}
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/* main test case body function; start Gb instances, start UE_CTs on top; wait for termination */
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private function f_tc_body(void_fn ue_fn, integer ue_per_bvc := mp_num_ue_in_bvc,
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float delay_between_ue := 0.005, float ue_tguard := 40.0) runs on test_CT {
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var ro_ue ues := {};
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for (var integer i := 0; i < lengthof(mp_nsconfig); i := i+1) {
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g_gb[i].cfg := {
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nsei := mp_nsconfig[i].nsei,
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sgsn_role := false,
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bvc := { }
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};
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/* create 'mp_num_bvc' number of BVCs */
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for (var integer j := 0; j < mp_num_bvc; j := j+1) {
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g_gb[i].cfg.bvc := g_gb[i].cfg.bvc & { f_gen_bvc(i * 1000, j) };
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}
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log("Initializing Gb interface ", i, ": NSEI=", g_gb[i].cfg.nsei);
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f_init_gb(g_gb[i], "gb", i);
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}
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for (var integer i := 0; i < lengthof(mp_nsconfig); i := i+1) {
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for (var integer j := 0; j < mp_num_bvc; j := j+1) {
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var BSSGP_BVC_CT bvc_comp := f_bssgp_get_bvci_ct(g_gb[i].cfg.bvc[j].bvci, BSSGP_PROC[i]);
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for (var integer k := 0; k < ue_per_bvc; k := k+1) {
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var charstring id := "gb" & int2str(i) & "-bvc" & int2str(g_gb[i].cfg.bvc[j].bvci) & "-UEsim" & int2str(k);
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var UE_CT ue;
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ue := f_start_ue(ue_fn, id, g_gb[i].cfg.bvc[j], i*10000+j*100+k, bvc_comp,
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ue_tguard);
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ues := ues & { ue };
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/* a bit of staggering to ensure the timers above don't run all at the same time */
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f_sleep(delay_between_ue);
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/* FIXME: as the BSSGP emulation is already running, we must not
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* take too long to start the UE components. If we do, the
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* BVC_S_UNBLOCKED notification will arrive before the components
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* all are running, meaning we never get that one :( */
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}
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}
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}
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/* wait for all UE components to terminate */
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for (var integer i := 0; i < lengthof(ues); i := i + 1) {
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ues[i].done;
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}
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setverdict(pass);
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}
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private function f_ul_ud(charstring id) runs on UE_CT
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{
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for (var integer num_pkts := 0; num_pkts < 50; num_pkts := num_pkts + 1) {
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var integer ran_index := 0;
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//BSSGP[ran_index].send(ts_BSSGP_UL_UD(g_pars.tlli, g_pars.bssgp_cell_id[ran_index], llc_enc));
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BSSGP[ran_index].send(ts_LLC_UI(f_rnd_octstring(512), '0000'B, '1'B, 0))
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f_sleep(0.5);
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/* 512 bytes + 32 bytes HDR every 0.5s (1088/s) means about 8704/s per UE */
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/* at 100 UE that ends up about 870 kBps */
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}
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}
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/* Generate uplink-unitdata traffic */
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testcase TC_ul_ud() runs on test_CT
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{
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f_tc_body(refers(f_ul_ud));
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}
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/* test bring-up of all BVCs */
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private function f_pass(charstring id) runs on UE_CT
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{
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setverdict(pass);
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}
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testcase TC_bvc_bringup() runs on test_CT
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{
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f_tc_body(refers(f_pass), ue_per_bvc := 1, ue_tguard := 20.0);
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}
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private function f_ul2dl_ud(charstring id) runs on UE_CT
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{
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var integer max_llc_payload_len := mp_ns_mtu - c_LLC_BSSGP_NS_overhead;
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for (var integer num_pkts := 0; num_pkts < 50; num_pkts := num_pkts + 1) {
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var integer ran_index := 0;
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var template (value) PDU_LLC llc_tx;
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var template (present) PDU_LLC llc_rx_exp;
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var octetstring llc_payload := f_rnd_octstring_rnd_len(max_llc_payload_len);
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var PDU_LLC llc_rx;
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timer T := 5.0;
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/* SAPI '0010'B is looped back by FRNET_Tests.ttcn */
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llc_tx := ts_LLC_UI(llc_payload, '0010'B, '1'B, 0);
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llc_rx_exp := llc_tx;
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llc_rx_exp.pDU_LLC_UI.fCS := ?;
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//BSSGP[ran_index].send(ts_BSSGP_UL_UD(g_pars.tlli, g_pars.cell_id, llc_enc));
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BSSGP[ran_index].send(llc_tx);
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T.start;
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alt {
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[] BSSGP[ran_index].receive(llc_rx_exp) -> value llc_rx { }
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[] BSSGP[ran_index].receive(PDU_LLC:?) -> value llc_rx {
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setverdict(fail, "Unexpected LLC: ", llc_rx);
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break;
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}
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[] T.timeout {
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setverdict(fail, "Timeout waiting for ", llc_rx_exp);
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break;
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}
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}
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//f_sleep(0.1);
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/* 512 bytes + 32 bytes HDR every 0.5s (1088/s) means about 8704/s per UE */
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/* at 100 UE that ends up about 870 kBps */
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}
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}
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/* Generate uplink-unitdata traffic */
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testcase TC_ul2dl_ud() runs on test_CT
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{
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f_tc_body(refers(f_ul2dl_ud), ue_tguard := 100.0);
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}
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control {
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execute( TC_bvc_bringup() );
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execute( TC_ul_ud() );
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execute( TC_ul2dl_ud() );
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}
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}
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