ttcn3
/
osmo-ttcn3-hacks
mirror of https://gerrit.osmocom.org/osmo-ttcn3-hacks
10
0
Fork 1
Code Issues Releases Wiki Activity

Add f_gen_tmsi() to generate a TMSI similar to f_gen_{imsi,imei}() 

... and start to use it from BSC_Tests.ttcn

Related: OS#4472, SYS#5002
Change-Id: Iacba62bb740374c28cbcf50d54ba1814c5b4e1c2
This commit is contained in:
Harald Welte 2021-01-14 20:39:46 +01:00
parent b978ed6af5
commit bf3976185a
2 changed files with 17 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
bsc/BSC_Tests.ttcn
View File

@ -6383,14 +6383,8 @@ testcase TC_assignment_verify_ms_power_params_ie() runs on test_CT {
* MSC Pooling
***********************************************************************/
function f_tmsi_nri(integer nri_v, octetstring base_tmsi := '42000023'O, integer nri_bitlen := 10) return octetstring
{
return int2oct( oct2int(base_tmsi) + bit2int( (int2bit(nri_v, 32) << ( 24 - nri_bitlen)) ),
4);
}
template MobileIdentityLV ts_MI_TMSI_NRI_LV(integer nri_v, integer nri_bitlen := 10) :=
ts_MI_TMSI_LV(tmsi := f_tmsi_nri(nri_v, nri_bitlen := nri_bitlen));
ts_MI_TMSI_LV(tmsi := f_gen_tmsi(suffix := 0, nri_v := nri_v, nri_bitlen := nri_bitlen));
private function f_expect_lchan_rel(RSL_DCHAN_PT rsl) runs on MSC_ConnHdlr {
interleave {
@ -6949,7 +6943,7 @@ private function f_tc_mscpool_paging_tmsi(charstring id) runs on MSC_ConnHdlr {
var RSL_ChanNeeded rsl_chneed := RSL_CHANNEED_SDCCH;
var template BSSMAP_IE_ChannelNeeded bssmap_chneed := ts_BSSMAP_IE_ChanNeeded(int2bit(enum2int(valueof(rsl_chneed)),2));
var integer nri_v := 300; /* <-- second MSC's NRI */
var octetstring tmsi := f_tmsi_nri(nri_v);
var octetstring tmsi := f_gen_tmsi(suffix := 0, nri_v := nri_v);
var BSSAP_N_UNITDATA_req paging;
f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);

15
library/Osmocom_Types.ttcn
View File

@ -267,6 +267,21 @@ function f_gen_msisdn(integer suffix) return hexstring {
return f_concat_pad(12, '49123'H, suffix);
}
function f_gen_tmsi(integer suffix, integer nri_v := 0, integer nri_bitlen := 10,
OCT4 base_tmsi := '42000023'O) return OCT4 {
var integer tmsi_int := oct2int(base_tmsi) + suffix;
var bitstring base_tmsi_bits := int2bit(tmsi_int, 32);
var bitstring prefix_bits := substr(base_tmsi_bits, 0, 8);
var bitstring suffix_bits := substr(base_tmsi_bits, 8 + nri_bitlen, 24 - nri_bitlen);
var bitstring total_bits := prefix_bits & int2bit(nri_v, nri_bitlen) & suffix_bits;
var OCT4 tmsi := bit2oct(total_bits);
log("f_gen_tmsi(suffix:=", suffix, ", nri_v:=", nri_v, ", nri_bitlen:=", nri_bitlen,
", base_tmsi:=", base_tmsi, ") -> prefix:=", prefix_bits, ", suffix:=", suffix_bits,
"total_bits:=", total_bits, " == ", tmsi);
return tmsi;
}
} with { encode "RAW"; variant "FIELDORDER(msb)" }