From 44479781b0e207604519f0b89f70efc5621bc5a9 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Sun, 2 Jun 2019 23:23:45 +0200 Subject: bts: Add test csse for I frame with wrong C/R value Implemented as BTS_Tests_LAPDm.TC_incorrect_cr() Related: OS#4032 Change-Id: I19e50049625bd31662a1e22b1394b69b2d249104 --- bts/BTS_Tests_LAPDm.ttcn | 54 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/bts/BTS_Tests_LAPDm.ttcn b/bts/BTS_Tests_LAPDm.ttcn index bf359f27..12f24eba 100644 --- a/bts/BTS_Tests_LAPDm.ttcn +++ b/bts/BTS_Tests_LAPDm.ttcn @@ -999,6 +999,59 @@ testcase TC_rr_response_frame_loss() runs on test_CT { f_testmatrix_each_chan(pars, refers(f_TC_rr_response_frame_loss)); } +/* Ensure BTS ignores I frames with wrong C/R bit; Inspired by TS 51.010-1 25.2.5.1 */ +private function f_TC_incorrect_cr(charstring id) runs on ConnHdlr { + var RslLinkId link_id := valueof(ts_RslLinkID_DCCH(0)); + var integer sapi := link_id.sapi; + var boolean is_sacch := false; + if (link_id.c == SACCH) { + is_sacch := true; + } + timer T := 3.0; + var default d; + + fp_common_init(); + + /* some common altstep for meas res and other background noise */ + d := activate(as_ignore_background(true)); + RSL.clear; + LAPDM.clear; + + f_establish_mo(link_id); + + var octetstring l3_mo := f_rnd_octstring(10); + /* Send an I frame to the BTS: SAPI = 0, C = 0, P = 1, M = 0, L = 3, N(S) = 0, N(R) = 0 */ + LAPDM.send(t_PH_DATA(0, is_sacch, ts_LAPDm_I(sapi, c_r:=cr_MO_RSP, p:=true, nr:=0, ns:=0, + l3:=l3_mo))); + T.start; + alt { + [] RSL.receive(tr_RSL_DATA_IND(g_chan_nr, link_id, l3_mo)) { + setverdict(fail, "BTS didn't ignore I frame with wrong C/R bit"); + } + [] RSL.receive(tr_RSL_ERROR_IND(g_chan_nr, link_id, '0C'O)) { + repeat; + } + /* ensure BTS still sends idle frames */ + [] as_lapdm_idle() { + setverdict(pass, "still sending idle frames"); + } + [] T.timeout {} + } + + /* Send RR command P=1 */ + LAPDM.send(t_PH_DATA(0, is_sacch, ts_LAPDm_RR(sapi, c_r:=cr_MO_CMD, p:=true, nr:=0))); + + /* The BTS shall respond with a RR response, F bit set to 1. */ + LAPDM.receive(t_PH_DATA(0, is_sacch, tr_LAPDm_RR(sapi, c_r:=cr_MT_RSP, p:=true, nr:=0))); + + deactivate(d); + + fp_common_fini(); +} +testcase TC_incorrect_cr() runs on test_CT { + var ConnHdlrPars pars := valueof(t_Pars(t_RslChanNr_Bm(1), ts_RSL_ChanMode_SIGN)); + f_testmatrix_each_chan(pars, refers(f_TC_incorrect_cr)); +} control { execute(TC_foo()); execute(TC_sabm_ua_dcch_sapi0()); @@ -1017,6 +1070,7 @@ control { execute(TC_segm_concat_sacch()); execute(TC_t200_n200()); execute(TC_rr_response_frame_loss()); + execute(TC_incorrect_cr()); } } -- cgit v1.2.3