From 9ea918c2a842d21f4c571782f061396c7d91bfc8 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Sat, 1 Jun 2019 11:46:25 +0200 Subject: [PATCH] bts: Add TC_segm_concat to test segmentation+concatenation Change-Id: I6a9ce3e27f4a01412186b3b5d8d2b86573b6f8ac --- bts/BTS_Tests_LAPDm.ttcn | 124 +++++++++++++++++++++++++++++++++++++++ library/LAPDm_Types.ttcn | 9 +-- 2 files changed, 129 insertions(+), 4 deletions(-) diff --git a/bts/BTS_Tests_LAPDm.ttcn b/bts/BTS_Tests_LAPDm.ttcn index 2eade0a9a..273847718 100644 --- a/bts/BTS_Tests_LAPDm.ttcn +++ b/bts/BTS_Tests_LAPDm.ttcn @@ -694,6 +694,129 @@ testcase TC_iframe_timer_recovery() runs on test_CT { f_testmatrix_each_chan(pars, refers(f_TC_iframe_timer_recovery)); } +type record LapdmDlConfig { + integer n201, + integer t200 +}; + +type record LapdmDlState { + integer v_s, + integer v_a, + integer v_r +}; + +template (value) LapdmDlState t_init_LapdmDlState := { + v_s := 0, + v_a := 0, + v_r := 0 +} + +private function inc_mod8(inout integer v) +{ + v := (v + 1) mod 8; +} + +private function f_lapdm_transceive_mo(inout LapdmDlState dls, RslLinkId link_id, octetstring l3) +runs on ConnHdlr { + var LAPDm_ph_data pd; + var integer offset := 0; + var integer n201 := 20; + var boolean is_sacch := false; + if (link_id.c == SACCH) { + n201 := 18; + is_sacch := true; + } + + while (offset < lengthof(l3)) { + var integer remain_len := lengthof(l3) - offset; + var integer seg_len := remain_len; + if (remain_len > n201) { + seg_len := n201; + } + var octetstring segment := substr(l3, offset, seg_len); + var boolean more; + if (offset + lengthof(segment) < lengthof(l3)) { + more := true; + } else { + more := false; + } + /* send the next segment */ + LAPDM.send(t_PH_DATA(0, is_sacch, + ts_LAPDm_I(link_id.sapi, c_r:=cr_MO_CMD, p:=false, + nr:=dls.v_a, ns:=dls.v_s, l3:=segment, m:=more))); + inc_mod8(dls.v_s); + offset := offset + lengthof(segment); + + /* wait for it to be acknowledged */ + alt { + [] LAPDM.receive(t_PH_DATA(0, is_sacch, tr_LAPDm_RR(link_id.sapi, c_r:=cr_MT_RSP, + p:=false, nr:=(dls.v_s) mod 8))); + [] as_ignore_background(); + [] LAPDM.receive(t_PH_DATA(0, is_sacch, ?)) -> value pd { + setverdict(fail, "received unexpected LAPDm ", pd); + repeat; + } + [] LAPDM.receive(t_PH_DATA(0, ?, ?)) { repeat; } + [offset < lengthof(l3)] RSL.receive(tr_RSL_DATA_IND(g_chan_nr, link_id, ?)) { + setverdict(fail, "received RSL DATA IND before message complete"); + } + } + } + + timer T := 1.0; + T.start; + alt { + [] RSL.receive(tr_RSL_DATA_IND(g_chan_nr, link_id, l3)) { + setverdict(pass); + } + [] RSL.receive(tr_RSL_DATA_IND(g_chan_nr, link_id, ?)) { + setverdict(fail, "Received RSL DATA IND with wrong payload"); + } + [] T.timeout { + setverdict(fail, "Timeout waiting for RSL DATA IND of de-segmented message"); + } + } +} + +/* Section 5.8.5 of TS 04.06 */ +const integer c_TS0406_MAX_L3_OCTETS := 251; + +private function f_TC_segm_concat(charstring id) runs on ConnHdlr { + const integer sapi := 0; + var RslLinkId link_id := valueof(ts_RslLinkID_DCCH(sapi)); + var default d; + timer T := 3.0; + + fp_common_init(); + + /* some common altstep for meas res and other background noise */ + d := activate(as_ignore_background()); + RSL.clear; + LAPDM.clear; + + var octetstring l3_mo := f_rnd_octstring(5); + + /* 1) The BTS is brought into the multiple frame established state */ + + /* MO Establish Request via LADPm: SAPI = 0, C = 0, P = 1, M = 0, 0 ≤ L ≤ N201.. */ + LAPDM.send(t_PH_DATA(0, false, ts_LAPDm_SABM(sapi, c_r:=cr_MO_CMD, p:=true, l3:=l3_mo))); + RSL.receive(tr_RSL_EST_IND(g_chan_nr, link_id, l3_mo)); + /* UA: SAPI = 0, R = 0, F = 1, M = 0, L = L of SABM. */ + LAPDM.receive(t_PH_DATA(0, false, tr_LAPDm_UA(sapi, cr_MT_RSP, f:=true, l3:=l3_mo))); + + l3_mo := f_rnd_octstring(c_TS0406_MAX_L3_OCTETS); + + deactivate(d); + + var LapdmDlState dls := valueof(t_init_LapdmDlState); + f_lapdm_transceive_mo(dls, link_id, l3_mo); + + fp_common_fini(); +} +testcase TC_segm_concat() 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_segm_concat)); +} control { @@ -710,6 +833,7 @@ control { execute(TC_establish_ign_first_sabm()); execute(TC_iframe_seq_and_ack()); execute(TC_iframe_timer_recovery()); + execute(TC_segm_concat()); } } diff --git a/library/LAPDm_Types.ttcn b/library/LAPDm_Types.ttcn index 577c9bdf7..caccc12bc 100644 --- a/library/LAPDm_Types.ttcn +++ b/library/LAPDm_Types.ttcn @@ -352,23 +352,24 @@ module LAPDm_Types { template LapdmFrame tr_LAPDm_I(template LapdmSapi sapi, template boolean c_r, template boolean p, template uint3_t nr, - template uint3_t ns, template octetstring l3) := { + template uint3_t ns, template octetstring l3, + boolean m := false) := { ab := { addr := tr_LapdmAddr(sapi, c_r), ctrl := tr_LapdmCtrlI(nr, ns, p), len := ?, - m := false, + m := m, el := 1, payload := l3 } } template (value) LapdmFrame ts_LAPDm_I(LapdmSapi sapi, boolean c_r, boolean p, uint3_t nr, - uint3_t ns, octetstring l3) := { + uint3_t ns, octetstring l3, boolean m := false) := { ab := { addr := ts_LapdmAddr(sapi, c_r), ctrl := ts_LapdmCtrlI(nr, ns, p), len := 0, - m := false, + m := m, el := 1, payload := l3 }