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-rw-r--r--test/test_flowprobe.py74
1 files changed, 74 insertions, 0 deletions
diff --git a/test/test_flowprobe.py b/test/test_flowprobe.py
index 5da0f74944b..234cb3b55c7 100644
--- a/test/test_flowprobe.py
+++ b/test/test_flowprobe.py
@@ -33,6 +33,19 @@ TMPL_L2_FIELD_COUNT = 3
TMPL_L3_FIELD_COUNT = 4
TMPL_L4_FIELD_COUNT = 3
+IPFIX_TCP_FLAGS_ID = 6
+IPFIX_SRC_TRANS_PORT_ID = 7
+IPFIX_DST_TRANS_PORT_ID = 11
+
+TCP_F_FIN = 0x01
+TCP_F_SYN = 0x02
+TCP_F_RST = 0x04
+TCP_F_PSH = 0x08
+TCP_F_ACK = 0x10
+TCP_F_URG = 0x20
+TCP_F_ECE = 0x40
+TCP_F_CWR = 0x80
+
class VppCFLOW(VppObject):
"""CFLOW object for IPFIX exporter and Flowprobe feature"""
@@ -509,6 +522,67 @@ class Flowprobe(MethodHolder):
ipfix.remove_vpp_config()
self.logger.info("FFP_TEST_FINISH_0000")
+ def test_flow_entry_reuse(self):
+ """Verify flow entry reuse doesn't accumulate meta info"""
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pkts = []
+
+ # enable ip4 datapath for an interface
+ # set active and passive timers
+ ipfix = VppCFLOW(
+ test=self,
+ active=2,
+ passive=3,
+ intf="pg3",
+ layer="l3 l4",
+ datapath="ip4",
+ direction="rx",
+ mtu=100,
+ )
+ ipfix.add_vpp_config()
+
+ # template packet should arrive immediately
+ ipfix_decoder = IPFIXDecoder()
+ templates = ipfix.verify_templates(ipfix_decoder, count=1)
+
+ # make a tcp packet
+ self.pkts = [
+ (
+ Ether(src=self.pg3.remote_mac, dst=self.pg4.local_mac)
+ / IP(src=self.pg3.remote_ip4, dst=self.pg4.remote_ip4)
+ / TCP(sport=1234, dport=4321)
+ / Raw(b"\xa5" * 50)
+ )
+ ]
+
+ # send the tcp packet two times, each time with new set of flags
+ tcp_flags = (
+ TCP_F_SYN | TCP_F_ACK,
+ TCP_F_RST | TCP_F_PSH,
+ )
+ for f in tcp_flags:
+ self.pkts[0][TCP].flags = f
+ capture = self.send_packets(src_if=self.pg3, dst_if=self.pg4)
+
+ # verify meta info - packet/octet delta and tcp flags
+ cflow = self.wait_for_cflow_packet(self.collector, templates[0], timeout=6)
+ self.verify_cflow_data(ipfix_decoder, capture, cflow)
+ self.verify_cflow_data_detail(
+ ipfix_decoder,
+ capture,
+ cflow,
+ {
+ IPFIX_TCP_FLAGS_ID: f,
+ IPFIX_SRC_TRANS_PORT_ID: 1234,
+ IPFIX_DST_TRANS_PORT_ID: 4321,
+ },
+ )
+
+ self.collector.get_capture(3)
+
+ # cleanup
+ ipfix.remove_vpp_config()
+
def test_interface_dump(self):
"""Dump interfaces with IPFIX flow record generation enabled"""
self.logger.info("FFP_TEST_START_0003")