[ovs-dev] [PATCH v2 9/9] system-traffic: Add zone-based conntrack timeout policy test

Yi-Hung Wei yihung.wei at gmail.com
Thu Aug 1 22:07:33 UTC 2019


This patch adds a system traffic test to verify the zone-based conntrack
timeout feature.  The test uses ovs-vsctl commands to configure
the customized ICMP and UDP timeout on zone 5 to a shorter period.
It then injects ICMP and UDP traffic to conntrack, and checks if the
corresponding conntrack entry expires after the predefined timeout.

Signed-off-by: Yi-Hung Wei <yihung.wei at gmail.com>
---
 tests/system-kmod-macros.at      | 25 +++++++++++++++
 tests/system-traffic.at          | 66 ++++++++++++++++++++++++++++++++++++++++
 tests/system-userspace-macros.at | 26 ++++++++++++++++
 3 files changed, 117 insertions(+)

diff --git a/tests/system-kmod-macros.at b/tests/system-kmod-macros.at
index 554a61e9bd95..1bc6f246f426 100644
--- a/tests/system-kmod-macros.at
+++ b/tests/system-kmod-macros.at
@@ -100,6 +100,15 @@ m4_define([CHECK_CONNTRACK_FRAG_OVERLAP],
 #
 m4_define([CHECK_CONNTRACK_NAT])
 
+# CHECK_CONNTRACK_TIMEOUT()
+#
+# Perform requirements checks for running conntrack customized timeout tests.
+#
+m4_define([CHECK_CONNTRACK_TIMEOUT],
+[
+    AT_SKIP_IF([! cat /boot/config-$(uname -r) | grep NF_CONNTRACK_TIMEOUT | grep '=y' > /dev/null])
+])
+
 # CHECK_CT_DPIF_PER_ZONE_LIMIT()
 #
 # Perform requirements checks for running ovs-dpctl ct-[set|get|del]-limits per
@@ -185,3 +194,19 @@ m4_define([OVS_CHECK_KERNEL_EXCL],
     sublevel=$(uname -r | sed -e 's/\./ /g' | awk '{print $ 2}')
     AT_SKIP_IF([ ! ( test $version -lt $1 || ( test $version -eq $1 && test $sublevel -lt $2 ) || test $version -gt $3 || ( test $version -eq $3 && test $sublevel -gt $4 ) ) ])
 ])
+
+# VSCTL_ADD_DATAPATH_TABLE()
+#
+# Create system datapath table "system" for kernel tests in ovsdb
+m4_define([VSCTL_ADD_DATAPATH_TABLE],
+[
+    AT_CHECK([ovs-vsctl -- --id=@m create Datapath datapath_version=0 -- set Open_vSwitch . datapaths:"system"=@m], [0], [stdout])
+])
+
+# VSCTL_ADD_ZONE_TIMEOUT_POLICY([parameters])
+#
+# Add zone based timeout policy to kernel datapath
+m4_define([VSCTL_ADD_ZONE_TIMEOUT_POLICY],
+[
+    AT_CHECK([ovs-vsctl add-zone-tp system $1], [0], [stdout])
+])
diff --git a/tests/system-traffic.at b/tests/system-traffic.at
index 1a04199dcfe9..f4ac8a8f2c06 100644
--- a/tests/system-traffic.at
+++ b/tests/system-traffic.at
@@ -3179,6 +3179,72 @@ NXST_FLOW reply:
 OVS_TRAFFIC_VSWITCHD_STOP
 AT_CLEANUP
 
+AT_SETUP([conntrack - zone-based timeout policy])
+CHECK_CONNTRACK()
+CHECK_CONNTRACK_TIMEOUT()
+OVS_TRAFFIC_VSWITCHD_START()
+
+ADD_NAMESPACES(at_ns0, at_ns1)
+
+ADD_VETH(p0, at_ns0, br0, "10.1.1.1/24")
+ADD_VETH(p1, at_ns1, br0, "10.1.1.2/24")
+
+AT_DATA([flows.txt], [dnl
+priority=1,action=drop
+priority=10,arp,action=normal
+priority=100,in_port=1,ip,action=ct(zone=5, table=1)
+priority=100,in_port=2,ip,action=ct(zone=5, table=1)
+table=1,in_port=2,ip,ct_state=+trk+est,action=1
+table=1,in_port=1,ip,ct_state=+trk+new,action=ct(commit,zone=5),2
+table=1,in_port=1,ip,ct_state=+trk+est,action=2
+])
+
+AT_CHECK([ovs-ofctl --bundle add-flows br0 flows.txt])
+
+dnl Test with default timeout
+dnl The default udp_single and icmp_first timeouts are 30 seconds in
+dnl kernel DP, and 60 seconds in userspace DP.
+
+dnl Send ICMP and UDP traffic
+NS_CHECK_EXEC([at_ns0], [ping -q -c 3 -i 0.3 -w 2 10.1.1.2 | FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+AT_CHECK([ovs-ofctl -O OpenFlow13 packet-out br0 "in_port=1 packet=50540000000a50540000000908004500001c000000000011a4cd0a0101010a0101020001000200080000 actions=resubmit(,0)"])
+
+sleep 4
+
+AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.1.1.2) | sort], [0], [dnl
+icmp,orig=(src=10.1.1.1,dst=10.1.1.2,id=<cleared>,type=8,code=0),reply=(src=10.1.1.2,dst=10.1.1.1,id=<cleared>,type=0,code=0),zone=5
+udp,orig=(src=10.1.1.1,dst=10.1.1.2,sport=<cleared>,dport=<cleared>),reply=(src=10.1.1.2,dst=10.1.1.1,sport=<cleared>,dport=<cleared>),zone=5
+])
+
+AT_CHECK([ovs-appctl dpctl/flush-conntrack])
+
+dnl Shorten the udp_single and icmp_first timeout in zone 5
+VSCTL_ADD_DATAPATH_TABLE()
+VSCTL_ADD_ZONE_TIMEOUT_POLICY([zone=5 udp_single=3 icmp_first=3])
+
+dnl Send ICMP and UDP traffic
+NS_CHECK_EXEC([at_ns0], [ping -q -c 3 -i 0.3 -w 2 10.1.1.2 | FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+AT_CHECK([ovs-ofctl -O OpenFlow13 packet-out br0 "in_port=1 packet=50540000000a50540000000908004500001c000000000011a4cd0a0101010a0101020001000200080000 actions=resubmit(,0)"])
+
+AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.1.1.2) | sort], [0], [dnl
+icmp,orig=(src=10.1.1.1,dst=10.1.1.2,id=<cleared>,type=8,code=0),reply=(src=10.1.1.2,dst=10.1.1.1,id=<cleared>,type=0,code=0),zone=5
+udp,orig=(src=10.1.1.1,dst=10.1.1.2,sport=<cleared>,dport=<cleared>),reply=(src=10.1.1.2,dst=10.1.1.1,sport=<cleared>,dport=<cleared>),zone=5
+])
+
+dnl Wait until the timeout expire.
+dnl We intend to wait a bit longer, because conntrack does not recycle the entry right after it is expired.
+sleep 4
+
+AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.1.1.2)], [0], [dnl
+])
+
+OVS_TRAFFIC_VSWITCHD_STOP
+AT_CLEANUP
+
 AT_BANNER([conntrack - L7])
 
 AT_SETUP([conntrack - IPv4 HTTP])
diff --git a/tests/system-userspace-macros.at b/tests/system-userspace-macros.at
index 9d5f3bf419d3..8950a4de7287 100644
--- a/tests/system-userspace-macros.at
+++ b/tests/system-userspace-macros.at
@@ -98,6 +98,16 @@ m4_define([CHECK_CONNTRACK_FRAG_OVERLAP])
 #
 m4_define([CHECK_CONNTRACK_NAT])
 
+# CHECK_CONNTRACK_TIMEOUT()
+#
+# Perform requirements checks for running conntrack customized timeout tests.
+* The userspace datapath does not support this feature yet.
+#
+m4_define([CHECK_CONNTRACK_TIMEOUT],
+[
+    AT_SKIP_IF([:])
+])
+
 # CHECK_CT_DPIF_PER_ZONE_LIMIT()
 #
 # Perform requirements checks for running ovs-dpctl ct-[set|get|del]-limits per
@@ -295,3 +305,19 @@ m4_define([OVS_CHECK_KERNEL_EXCL],
 [
     AT_SKIP_IF([:])
 ])
+
+# VSCTL_ADD_DATAPATH_TABLE()
+#
+# Create datapath table "netdev" for userspace tests in ovsdb
+m4_define([VSCTL_ADD_DATAPATH_TABLE],
+[
+    AT_CHECK([ovs-vsctl -- --id=@m create Datapath datapath_version=0 -- set Open_vSwitch . datapaths:"netdev"=@m], [0], [stdout])
+])
+
+# VSCTL_ADD_ZONE_TIMEOUT_POLICY([parameters])
+#
+# Add zone based timeout policy to userspace datapath
+m4_define([VSCTL_ADD_ZONE_TIMEOUT_POLICY],
+[
+    AT_CHECK([ovs-vsctl add-zone-tp netdev $1], [0], [stdout])
+])
-- 
2.7.4



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