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osmo-ttcn3-hacks
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pcu: Test SNS where initial IP/port is not part of configured NS-VCs 

As per section 6.2.1 of 3GPP TS 48.016, the initial IP/port where the
SNS SIZE/CONFIG procedures are being performed is not automatically part
of the later NS-VCs.  This means we shall not perform the NS-ALIVE
procedure or any other procedure beyond SNS with that specific endpoint.

This adds a new TC_sns_1c1u_separate() to test for this behavior.

Change-Id: Ie2a017250ca1d5386e2cf42d1945e61d170ac92d
Related: OS#3844
This commit is contained in:
Harald Welte 2019-03-16 13:36:07 +01:00
parent 3b3358323c
commit ecd159ecc7
2 changed files with 91 additions and 0 deletions
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31
pcu/PCU_Tests_RAW.ttcn
View File

@ -124,6 +124,37 @@ function f_outgoing_ns_alive(integer idx := 0) runs on RAW_NS_CT {
}
}
/* perform outbound NS-ALIVE procedure */
function f_outgoing_ns_alive_no_ack(integer idx := 0, float tout := 10.0) runs on RAW_NS_CT {
timer T := tout;
NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], t_NS_ALIVE));
T.start;
alt {
[] NSCP[idx].receive(t_NS_RecvFrom(t_NS_ALIVE_ACK)) {
setverdict(fail, "Received unexpected NS-ALIVE ACK");
}
[] NSCP[idx].receive { repeat; }
[] T.timeout {
setverdict(pass);
}
}
}
/* ensure no matching message is received within 'tout' */
function f_ensure_no_ns(template PDU_NS ns := ?, integer idx := 0, float tout := 3.0)
runs on RAW_Test_CT {
timer T := tout;
T.start;
alt {
[] NSCP[idx].receive(t_NS_RecvFrom(ns)) {
setverdict(fail, "NS-ALIVE from unconfigured (possibly initial) endpoint");
}
[] T.timeout {
setverdict(pass);
}
}
}
/* perform outbound NS-BLOCK procedure */
function f_outgoing_ns_block(NsCause cause, integer idx := 0) runs on RAW_NS_CT {
NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_NS_BLOCK(cause, g_nsconfig[idx].nsvci)));

60
pcu/PCU_Tests_RAW_SNS.ttcn
View File

@ -67,6 +67,19 @@ runs on RAW_NS_CT {
rx := f_ns_exp(tr_SNS_CONFIG_ACK(g_nsconfig[idx].nsei, cause), idx);
}
/* perform outbound SNS-CONFIG procedure (separate endpoints: 1 for control, 1 for user */
function f_outgoing_sns_config_1c1u_separate(template (omit) NsCause cause := omit, integer idx := 0)
runs on RAW_NS_CT {
log("f_outgoing_sns_config_1c1u_separate(idx=", idx, ")");
var PDU_NS rx;
var template (omit) IP4_Elements v4 := { ts_SNS_IPv4(g_nsconfig[1].local_ip,
g_nsconfig[1].local_udp_port, 1, 0),
ts_SNS_IPv4(g_nsconfig[2].local_ip,
g_nsconfig[2].local_udp_port, 0, 1) };
NSCP[idx].send(t_NS_Send(g_ns_conn_id[idx], ts_SNS_CONFIG(g_nsconfig[idx].nsei, true, v4)));
rx := f_ns_exp(tr_SNS_CONFIG_ACK(g_nsconfig[idx].nsei, cause), idx);
}
function f_outgoing_sns_add(integer idx_add, uint8_t w_sig := 1, uint8_t w_user := 1, integer idx := 0)
runs on RAW_NS_CT {
log("f_outgoing_sns_add(idx_add=", idx_add, ")");
@ -211,6 +224,52 @@ testcase TC_sns_1c1u() runs on RAW_Test_CT {
setverdict(pass);
}
private function f_sns_bringup_1c1u_separate() runs on RAW_Test_CT {
/* Activate two NS codec ports */
f_init_ns_codec();
f_init_ns_codec(1);
f_init_ns_codec(2);
f_init_pcuif();
/* Perform Size + BSS-originated config */
f_incoming_sns_size();
f_incoming_sns_config();
/* perform SGSN-originated config using idx==0 for signalling and idx==1 for user traffic */
f_outgoing_sns_config_1c1u_separate();
/* wait for one ALIVE cycle, then ACK any further ALIVE in the background
* for both NS-VCs */
as_rx_alive_tx_ack(oneshot := true, idx := 1);
activate(as_rx_alive_tx_ack(idx := 1));
as_rx_alive_tx_ack(oneshot := true, idx := 2);
activate(as_rx_alive_tx_ack(idx := 2));
/* ensure there's no NS-ALIVE received on idx==0 */
f_ensure_no_ns(t_NS_ALIVE, idx := 0);
/* perform outgoing ALIVE procedure for both NS-VCs */
f_outgoing_ns_alive(1);
f_outgoing_ns_alive(2);
/* ensure there's no response to NS-ALIVE sent on idx==0 */
f_outgoing_ns_alive_no_ack(idx := 0);
/* Expect BVC-RESET for signaling BVCI=0 and ptp BVCI */
as_rx_bvc_reset_tx_ack(0, oneshot := true, idx := 1);
as_rx_bvc_reset_tx_ack(mp_gb_cfg.bvci, oneshot := true, idx := 1);
/* Expect UNBLOCK for ptp BVCI on signaling NS-VC (idx==1) */
as_rx_bvc_unblock_tx_ack(mp_gb_cfg.bvci, oneshot := true, idx := 1);
/* wait for one FLOW-CONTROL BVC and then ACK any further in the future. Flow
* control happens on the p-t-p BVCI and hence on index 1 */
as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci, oneshot := true, idx := 2);
activate(as_rx_bvc_fc_tx_ack(mp_gb_cfg.bvci, idx := 2));
}
/* Test full IP-SNS bring-up with two NS-VCs, one sig-only and one user-only - and where
* the initial IP/port for the SNS procedure is *not* part of the NS-VCs later */
testcase TC_sns_1c1u_separate() runs on RAW_Test_CT {
f_sns_bringup_1c1u_separate();
setverdict(pass);
}
/* Test adding new IP endpoints at runtime */
testcase TC_sns_add() runs on RAW_Test_CT {
f_sns_bringup_1c1u();
@ -281,6 +340,7 @@ control {
execute( TC_sns_po_config_nack() );
execute( TC_sns_so_config_success() );
execute( TC_sns_1c1u() );
execute( TC_sns_1c1u_separate() );
execute( TC_sns_add() );
execute( TC_sns_del() );
execute( TC_sns_chg_weight() );