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Harald Welte gerrit-no-reply at lists.osmocom.orgHarald Welte has uploaded this change for review. ( https://gerrit.osmocom.org/10983
Change subject: WIP: CBCH related tests for BTS
......................................................................
WIP: CBCH related tests for BTS
This introduces a set of CBCH related tests for osmo-bts.
Warning: Those tests currently require a patched trxcon to work.
Change-Id: I955b4000c12180a39b0205b69b7b2c8cee8c9da3
---
M bts/BTS_Tests.ttcn
1 file changed, 260 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/83/10983/1
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index aa402d1..4fafe0e 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -4079,7 +4079,261 @@
/* receptiom of SABM in multi-frame established state */
+/***********************************************************************
+ * Cell Broadcast related tests
+ ***********************************************************************/
+type record CbchTestPars {
+ boolean use_sdcch4,
+ CbchTestMsgs msgs
+};
+
+type record CbchTestMsg {
+ /* config / input data */
+ RSL_CbCommand rsl_cb_cmd,
+ uint2_t last_block, /* 0..3 */
+ octetstring payload,
+ /* computed / result data */
+ CbchBlocks blocks optional
+};
+type record of CbchTestMsg CbchTestMsgs;
+
+/* a single 22byte block within a CbchTestMsg */
+type record CbchBlock {
+ uint4_t seq_nr, /* as per TS 04.12 */
+ boolean is_last,
+ OCT22 payload,
+ boolean seen_once
+};
+type record of CbchBlock CbchBlocks;
+
+/* compute the expected blocks for given test parameters */
+private function f_cbch_compute_exp_blocks(inout CbchTestPars pars) {
+ var integer i;
+
+ for (i := 0; i < lengthof(pars.msgs); i := i+1) {
+ pars.msgs[i].blocks := f_comp_blocks(pars.msgs[i]);
+ }
+}
+private function f_comp_blocks(in CbchTestMsg msg) return CbchBlocks {
+ var CbchBlocks blocks := {};
+ var integer i;
+
+ for (i := 0; i <= msg.last_block; i := i+1) {
+ var CbchBlock block := {
+ seq_nr := i,
+ is_last := false,
+ payload := substr(msg.payload, 22*i, 22),
+ seen_once := false
+ };
+ if (msg.rsl_cb_cmd == RSL_CB_CMD_SCHEDULE and i == 0) {
+ block.seq_nr := 8;
+ }
+ if (i == msg.last_block) {
+ block.is_last := true;
+ }
+ blocks := blocks & {block};
+ }
+
+ return blocks;
+};
+
+/* TS 48.058 Section 9.3.41 */
+private function f_cbch_block_nr2rsl(uint2_t nr) return uint2_t {
+ select (nr) {
+ case (0) { return 1; }
+ case (1) { return 2; }
+ case (2) { return 3; }
+ case (3) { return 0; }
+ }
+ setverdict(fail, "Invalid block number");
+ mtc.stop;
+}
+
+/* Verify the CBCH TB scheduling rules of TS 05.02 Section 6.5.4 */
+private function f_cbch_fn_verify(uint32_t fn, CBCH_Block cb)
+{
+ var integer tb := (fn/51) mod 8; /* TS 05.02 Section 6.5.4 */
+ if (cb.block_type.seq_nr == 15 /* null */) {
+ /* always permitted */
+ return;
+ } else if (cb.block_type.seq_nr == 8 /* schedule */) {
+ if (tb != 0) {
+ setverdict(fail, "Schedule block at TB=", tb);
+ }
+ } else if (cb.block_type.seq_nr < 4) {
+ if (cb.block_type.seq_nr != tb and cb.block_type.seq_nr+4 != tb) {
+ setverdict(fail, "Normal block at wrong TB=", tb, ": ", cb);
+ }
+ }
+}
+
+/* shared function doing the heavy lifting for most CBCH tests */
+private function f_TC_smscb(CbchTestPars pars) runs on test_CT {
+ var L1ctlDlMessage dl;
+ var boolean cmd_seen_once := false;
+ var integer i, j;
+ timer T := 5.0;
+
+ f_cbch_compute_exp_blocks(pars);
+
+ f_init_vty_bsc();
+ /* ensure that a CBCH is present in channel combination */
+ if (pars.use_sdcch4) {
+ f_vty_config2(BSCVTY, {"network", "bts 0", "trx 0", "timeslot 0"},
+ "phys_chan_config CCCH+SDCCH4+CBCH");
+ f_vty_config2(BSCVTY, {"network", "bts 0", "trx 0", "timeslot 6"},
+ "phys_chan_config SDCCH8");
+ } else {
+ f_vty_config2(BSCVTY, {"network", "bts 0", "trx 0", "timeslot 0"},
+ "phys_chan_config CCCH+SDCCH4");
+ f_vty_config2(BSCVTY, {"network", "bts 0", "trx 0", "timeslot 6"},
+ "phys_chan_config SDCCH8+CBCH");
+ }
+ f_vty_transceive(BSCVTY, "drop bts connection 0 oml");
+ f_sleep(2.0);
+ f_init(testcasename());
+
+ f_init_l1ctl();
+ f_l1_tune(L1CTL);
+
+ /* send SMSCB[s] via RSL */
+ for (i := 0; i < lengthof(pars.msgs); i := i+1) {
+ var CbchTestMsg msg := pars.msgs[i];
+ var uint2_t rsl_last_block := f_cbch_block_nr2rsl(msg.last_block);
+ var RSL_IE_CbCommandType cmd_type :=
+ valueof(ts_RSL_IE_CbCmdType(msg.rsl_cb_cmd, rsl_last_block));
+ RSL_CCHAN.send(ts_RSL_UD(ts_RSL_SMSCB_CMD(cmd_type, msg.payload)));
+ }
+ T.start;
+ /* Expect this to show up exactly once on the basic CBCH (four blocks) */
+ alt {
+ [] L1CTL.receive(tr_L1CTL_DATA_IND(t_RslChanNr_CBCH(0))) -> value dl {
+ log("CBCH: ", dl);
+ var CBCH_Block cb := dec_CBCH_Block(dl.payload.data_ind.payload);
+ /* detect the proper CBCH messages; check frame number */
+ f_cbch_fn_verify(dl.dl_info.frame_nr, cb);
+ if (not match(cb, tr_CBCH_Block)) {
+ setverdict(fail, "Illegal CBCH Block received: ", cb);
+ } else {
+ var boolean matched := false;
+ /* ignore NULL messages */
+ if (match(cb, tr_CBCH_Block(15, ?, ?))) { repeat; }
+ for (i := 0; i < lengthof(pars.msgs); i := i+1) {
+ for (j := 0; j < lengthof(pars.msgs[i].blocks); j := j+1) {
+ var CbchBlock b := pars.msgs[i].blocks[j];
+ if (match(cb, tr_CBCH_Block(b.seq_nr, b.is_last, b.payload))) {
+ if (not pars.msgs[i].blocks[j].seen_once) {
+ pars.msgs[i].blocks[j].seen_once := true;
+ setverdict(pass);
+ } else {
+ setverdict(fail, "Received SMSCB twice! ", cb);
+ }
+ matched := true;
+ continue;
+ }
+ }
+ }
+ if (not matched) {
+ setverdict(fail, "Received unexpected CBCH block: ", cb);
+ }
+ repeat;
+ }
+ }
+ [] L1CTL.receive { repeat; }
+ [] T.timeout {
+ for (i := 0; i < lengthof(pars.msgs); i := i+1) {
+ for (j := 0; j < lengthof(pars.msgs[i].blocks); j := j+1) {
+ var CbchBlock b := pars.msgs[i].blocks[j];
+ if (not b.seen_once) {
+ setverdict(fail, "Timeout waiting for CBCH");
+ }
+ }
+ }
+ }
+ }
+
+ /* reset timeslot 0 channel combination to default */
+ f_vty_config2(BSCVTY, {"network", "bts 0", "trx 0", "timeslot 0"},
+ "phys_chan_config CCCH+SDCCH4");
+ f_vty_config2(BSCVTY, {"network", "bts 0", "trx 0", "timeslot 6"},
+ "phys_chan_config SDCCH8");
+ f_shutdown();
+}
+
+/* transmit single-block SMSCB COMMAND */
+testcase TC_sms_cb_cmd_cbch_sdcch4_1block() runs on test_CT {
+ var CbchTestPars pars := {
+ use_sdcch4 := true,
+ msgs := {
+ { RSL_CB_CMD_NORMAL, 0, '001000320f1141660c344dd3cba09a0c000000000000'O,
+ omit }
+ }
+ };
+ f_TC_smscb(pars);
+}
+
+/* transmit dual-block SMSCB COMMAND */
+testcase TC_sms_cb_cmd_cbch_sdcch4_2block() runs on test_CT {
+ var CbchTestPars pars := {
+ use_sdcch4 := true,
+ msgs := {
+ { RSL_CB_CMD_NORMAL, 1, '001000320f1141660c344dd3cba09a0c000000000000'O &
+ '000102030405060708090a0b0c0d0e0f101213141516'O,
+ omit }
+ }
+ };
+ f_TC_smscb(pars);
+}
+
+/* transmit triple-block SMSCB COMMAND */
+testcase TC_sms_cb_cmd_cbch_sdcch4_3block() runs on test_CT {
+ var CbchTestPars pars := {
+ use_sdcch4 := true,
+ msgs := {
+ { RSL_CB_CMD_NORMAL, 2, '001000320f1141660c344dd3cba09a0c000000000000'O &
+ '000102030405060708090a0b0c0d0e0f101213141516'O &
+ '101112131415161718191a1b1c1d1e1f202223242526'O,
+ omit }
+ }
+ };
+ f_TC_smscb(pars);
+
+}
+
+/* transmit quad-block SMSCB COMMAND */
+testcase TC_sms_cb_cmd_cbch_sdcch4_4block() runs on test_CT {
+ var CbchTestPars pars := {
+ use_sdcch4 := true,
+ msgs := {
+ { RSL_CB_CMD_NORMAL, 3, '001000320f1141660c344dd3cba09a0c000000000000'O &
+ '000102030405060708090a0b0c0d0e0f101213141516'O &
+ '101112131415161718191a1b1c1d1e1f202223242526'O &
+ '202122232425262728292a2b2c2d2e2f303233343536'O,
+ omit }
+ }
+ };
+ f_TC_smscb(pars);
+}
+
+/* transmit SMSCB COMMAND with SCHEDULE payload */
+testcase TC_sms_cb_cmd_cbch_sdcch4_schedule() runs on test_CT {
+ var CbchTestPars pars := {
+ use_sdcch4 := true,
+ msgs := {
+ { RSL_CB_CMD_SCHEDULE, 3, '001000320f1141660c344dd3cba09a0c000000000000'O &
+ '000102030405060708090a0b0c0d0e0f101213141516'O &
+ '101112131415161718191a1b1c1d1e1f202223242526'O &
+ '202122232425262728292a2b2c2d2e2f303233343536'O,
+ omit }
+ }
+ };
+ f_TC_smscb(pars);
+}
+
+/* transmit SMSCB COMMAND with DEFAULT message */
+testcase TC_sms_cb_cmd_cbch_sdcch4_default() runs on test_CT {
+}
/* TODO Areas:
@@ -4204,6 +4458,12 @@
execute( TC_tch_sign_l2_fill_frame() );
execute( TC_tch_sign_l2_fill_frame_dtxd() );
+
+ execute( TC_sms_cb_cmd_cbch_sdcch4_1block() );
+ execute( TC_sms_cb_cmd_cbch_sdcch4_2block() );
+ execute( TC_sms_cb_cmd_cbch_sdcch4_3block() );
+ execute( TC_sms_cb_cmd_cbch_sdcch4_4block() );
+ execute( TC_sms_cb_cmd_cbch_sdcch4_schedule() );
}
--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I955b4000c12180a39b0205b69b7b2c8cee8c9da3
Gerrit-Change-Number: 10983
Gerrit-PatchSet: 1
Gerrit-Owner: Harald Welte <laforge at gnumonks.org>
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