test GGSN support for optional GTP-U sequence numbers
Add VTY functionality to GGSN tests, and use the VTY to enable/disable
GTP-U Tx sequence numbers in the running osmo-ggsn.
The GTPU packet template now makes sequence numbers optional.
A template created with its sequence number set to 'omit' will result in
a packet without a sequence number, i.e. the 'sequence number present' bit
in the packet header is cleared, and the sequence number field is omitted
from the encoded GTPU T-PDU packet.
Re-use the existing TC_pdp4_clients_interact() test for testing the
behaviour of osmo-ggsn. This test is now run twice, once with and
once without GTP-U Tx sequence numbers. Verify that packets relayed by
osmo-ggsn match its "g-pdu tx-sequence-numbers" configuration setting.
Change-Id: I1dc299407c61b1c865035add44067b8ab89001b3
Related: OS#2519
diff --git a/ggsn_tests/GGSN_Tests.default b/ggsn_tests/GGSN_Tests.default
index 2d57f89..ff0cd97 100644
--- a/ggsn_tests/GGSN_Tests.default
+++ b/ggsn_tests/GGSN_Tests.default
@@ -1,6 +1,14 @@
[LOGGING]
[TESTPORT_PARAMETERS]
+*.GGSNVTY.CTRL_MODE := "client"
+*.GGSNVTY.CTRL_HOSTNAME := "127.0.0.1"
+*.GGSNVTY.CTRL_PORTNUM := "4260"
+*.GGSNVTY.CTRL_LOGIN_SKIPPED := "yes"
+*.GGSNVTY.CTRL_DETECT_SERVER_DISCONNECTED := "yes"
+*.GGSNVTY.CTRL_READMODE := "buffered"
+*.GGSNVTY.CTRL_CLIENT_CLEANUP_LINEFEED := "yes"
+*.GGSNVTY.PROMPT1 := "OsmoGGSN> "
[MODULE_PARAMETERS]
GGSN_Tests.m_bind_ip_gtpc := "127.0.42.1"
@@ -11,5 +19,6 @@
GGSN_Tests.m_ggsn_ip4_dns2 := "8.8.8.8"
GGSN_Tests.m_ggsn_ip6_dns1 := "2001:4860:4860::8888"
GGSN_Tests.m_ggsn_ip6_dns2 := "2001:4860:4860::8844"
+Osmocom_VTY_Functions.mp_prompt_prefix := "OsmoGGSN";
[EXECUTE]