Harald Welte has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/14350
Change subject: bts: Add test csse for I frame with wrong C/R value
......................................................................
bts: Add test csse for I frame with wrong C/R value
Implemented as BTS_Tests_LAPDm.TC_incorrect_cr()
Change-Id: I19e50049625bd31662a1e22b1394b69b2d249104
---
M bts/BTS_Tests_LAPDm.ttcn
1 file changed, 54 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks
refs/changes/50/14350/1
diff --git a/bts/BTS_Tests_LAPDm.ttcn b/bts/BTS_Tests_LAPDm.ttcn
index 218804e..f57b052 100644
--- a/bts/BTS_Tests_LAPDm.ttcn
+++ b/bts/BTS_Tests_LAPDm.ttcn
@@ -1001,6 +1001,59 @@
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());
@@ -1019,6 +1072,7 @@
execute(TC_segm_concat_sacch());
execute(TC_t200_n200());
execute(TC_rr_response_frame_loss());
+ execute(TC_incorrect_cr());
}
}
--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: I19e50049625bd31662a1e22b1394b69b2d249104
Gerrit-Change-Number: 14350
Gerrit-PatchSet: 1
Gerrit-Owner: Harald Welte <[email protected]>
Gerrit-MessageType: newchange
