ggsn: Parametrize T3-RESPONSE and N3-REQUESTS
Since osmo-ggsn.git Ia15c1cfd201d7c43e9a1d6ceb6725ddf392d2c65 osmo-ggsn supports configuration of X3 timer, which should be set to (T3-RESPONSE * N3-REQUESTS) configured at the peer. The default values are 5 and 3 respectively, hence X3 is by default 5*3=15 seconds. Let's use that default value for now. Once new osmo-ggsn version is released, we can speed up test duration by decreasing the values of the module parameters introduced in this commit and configure VTY gtp timers at osmo-ggsn accordingly. Related: OS#5485 Change-Id: I02c0982674b43317a5fc8f341c03eeeb1efee77fchanges/07/30007/2
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@ -77,6 +77,8 @@ module GGSN_Tests {
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* The tests expect to be able to send ping packets between any two simulated MS within the same
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* address range. This requires IP forwarding to be enabled on the corresponding tun interfaces.
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*/
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integer mp_t3_response := 5; /* local T3-RESPONSE timeout, seconds */
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integer mp_n3_requests := 3; /* local N3-REQUESTS counter */
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GGSN_Impl m_ggsn_impl := GGSN_IMPL_OSMOCOM;
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}
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@ -296,13 +298,13 @@ module GGSN_Tests {
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}
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function f_shutdown_helper() runs on GT_CT {
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/* Sleep N3_REQUESTS * T3_REQUEST seconds, nowadays 5*3=15s.
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/* Sleep (T3-RESPONSE * N3-REQUESTS) seconds.
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* This ensures all retransmit queues are cleared before jumping
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* into next tests, hence avoding situation where a test resuses
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* a seqnum still in the GGSN's resp queue (dup req detector).
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* See OS#5485 avout decreasing time. We could also add a new
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* VTY command that calls gtp_clear_queues() */
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f_sleep(15.0);
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f_sleep(int2float(mp_t3_response * mp_n3_requests));
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setverdict(pass);
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}
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@ -2090,16 +2092,15 @@ module GGSN_Tests {
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}
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/* Send a duplicate echo req. osmo-ggsn maintains a queue for sent
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responses (60 seconds): If same delete req is sent and duplicate is
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detected, saved duplicate response should be sent back. */
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/* Send a duplicate echo req. osmo-ggsn maintains a queue for sent responses (T3-RESPONSE * N3-REQUESTS):
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* If same delete req is sent and duplicate is detected, saved duplicate response should be sent back. */
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testcase TC_act_deact_retrans_duplicate() runs on GT_CT {
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f_init();
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var PdpContext ctx := valueof(t_DefinePDP(f_rnd_imsi('26242'H), "1234", c_ApnInternet, valueof(t_EuaIPv4Dyn)));
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f_pdp_ctx_act(ctx);
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f_pdp_ctx_del(ctx, '1'B);
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/* leave some time in between to make sure retransmit response queue keeps packets for a while */
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f_sleep(1.0);
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f_sleep(int2float(mp_t3_response));
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/* g_c_seq_nr was increased during f_pdp_ctx_del(), we want a
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duplicate. If it was not a duplicate, osmo-ggsn would answer
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with a failure since that PDP ctx was already deleted. */
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