FR/FRNET: Introduce simplistic simulation of UEs
Let's start a number of per-UE/TLLI component on each BVC, and generate some uplink traffic with random-payload 512-byte LLC frames. The FRNET(SGSN) side simply ignores all of those by means of a CreateCallback. Change-Id: I1b25b4a650d831bb07e9623b76e6c3dcdd71ac88
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@ -43,6 +43,11 @@ type component test_CT {
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var GbInstances g_gb;
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};
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private function CreateCallback(BssgpBvci bvci, BssgpCellId cell_id, OCT4 tlli, BssgpDecoded dec) runs on BSSGP_BVC_CT {
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/* simply ignore any inbound traffic for now */
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}
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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");
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@ -66,7 +71,7 @@ function f_gen_bvc(integer base, integer idx) return BssgpBvcConfig {
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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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create_cb := refers(CreateCallback)
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};
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return bvc;
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}
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@ -6,9 +6,11 @@ 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_Templates all;
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modulepar {
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integer mp_num_bvc := 10;
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integer mp_num_ue_in_bvc := 10;
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NSConfigurations mp_nsconfig := {
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{
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nsei := 123,
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@ -42,6 +44,7 @@ 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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private function f_init_gb(inout GbInstance gb, charstring id, integer offset) runs on test_CT {
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@ -50,6 +53,7 @@ private function f_init_gb(inout GbInstance gb, charstring id, integer offset) r
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gb.vc_BSSGP := BSSGP_CT.create(id_idx & "-BSSGPemu");
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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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@ -72,6 +76,65 @@ function f_gen_bvc(integer base, integer idx) return BssgpBvcConfig {
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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 UE_Pars {
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hexstring imsi,
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OCT4 tlli
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};
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type function void_fn(charstring id) runs on UE_CT;
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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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fn.apply(id);
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f_bssgp_client_unregister(g_pars.imsi);
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}
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function f_ul_ud(charstring id) runs on UE_CT {
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log("Waiting for BVC-UNBLOCK");
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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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}
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log ("Entering main loop");
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while (true) {
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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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}
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}
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function f_start_ue(void_fn fn, charstring id, GbInstance gb, integer imsi_suffix, BSSGP_BVC_CT bvc_comp, float t_guard := 30.0)
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runs on test_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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};
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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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}
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testcase TC_foo() runs on test_CT {
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@ -85,8 +148,20 @@ testcase TC_foo() runs on test_CT {
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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 < mp_num_ue_in_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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f_start_ue(refers(f_ul_ud), id, g_gb[i], i*10000+j*100+k, bvc_comp);
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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(0.05);
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}
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}
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}
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while (true) {
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f_sleep(100.0);
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}
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