system-traffic: Remove basic connectivity tests.

For many of the tests, we would first execute a "basic connectivity
check" to validate the sanity of the setup before running the test
traffic which probes the actual OVS behaviour. However, by running
traffic through the rules prior to running the test, it is more likely
that the traffic hits datapath flows and doesn't test the "execute" path
(from userspace to kernel). This can hide some classes of bugs.

The first few tests in system-traffic already check the basic sanity of
the environment, so these redundant pieces are unnecessary. Remove them.

Signed-off-by: Joe Stringer <joe@ovn.org>
Acked-by: Jesse Gross <jesse@kernel.org>

tests/system-traffic.at

@@ -561,9 +561,6 @@ priority=100,in_port=2,ct_state=+trk+est,tcp,action=1
 
 AT_CHECK([ovs-ofctl --bundle add-flows br0 flows.txt])
 
-dnl Basic connectivity check.
-NS_CHECK_EXEC([at_ns0], [ping -q -c 3 -i 0.3 -w 2 10.1.1.2 >/dev/null])
-
 dnl HTTP requests from ns0->ns1 should work fine.
 NETNS_DAEMONIZE([at_ns1], [[$PYTHON $srcdir/test-l7.py]], [http0.pid])
 NS_CHECK_EXEC([at_ns0], [wget 10.1.1.2 -t 3 -T 1 --retry-connrefused -v -o wget0.log])
@@ -1613,11 +1610,6 @@ priority=100,in_port=2,ct_state=+trk+est-new,icmp,action=1
 
 AT_CHECK([ovs-ofctl --bundle add-flows br0 flows.txt])
 
-dnl Basic connectivity check.
-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
-])
-
 dnl Ipv4 fragmentation connectivity check.
 NS_CHECK_EXEC([at_ns0], [ping -s 1600 -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
@@ -1653,11 +1645,6 @@ priority=100,in_port=2,ct_state=+trk+est-new,icmp,action=1
 
 AT_CHECK([ovs-ofctl --bundle add-flows br0 flows.txt])
 
-dnl Basic connectivity check.
-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
-])
-
 dnl Ipv4 fragmentation connectivity check.
 NS_CHECK_EXEC([at_ns0], [ping -s 1600 -q -c 1 -i 0.3 -w 2 10.1.1.2 | FORMAT_PING], [0], [dnl
 7 packets transmitted, 0 received, 100% packet loss, time 0ms
@@ -1688,11 +1675,6 @@ priority=100,in_port=2,ct_state=+trk+est-new,icmp,action=1
 
 AT_CHECK([ovs-ofctl --bundle add-flows br0 flows.txt])
 
-dnl Basic connectivity check.
-NS_CHECK_EXEC([at_ns0], [ping -q -c 3 -i 0.3 -w 2 10.2.2.2 | FORMAT_PING], [0], [dnl
-3 packets transmitted, 3 received, 0% packet loss, time 0ms
-])
-
 dnl Ipv4 fragmentation connectivity check.
 NS_CHECK_EXEC([at_ns0], [ping -s 1600 -q -c 3 -i 0.3 -w 2 10.2.2.2 | FORMAT_PING], [0], [dnl
 3 packets transmitted, 3 received, 0% packet loss, time 0ms
@@ -1732,11 +1714,6 @@ dnl waiting, we get occasional failures due to the following error:
 dnl "connect: Cannot assign requested address"
 OVS_WAIT_UNTIL([ip netns exec at_ns0 ping6 -c 1 fc00::2])
 
-dnl Basic connectivity check.
-NS_CHECK_EXEC([at_ns0], [ping6 -q -c 3 -i 0.3 -w 2 fc00::2 | FORMAT_PING], [0], [dnl
-3 packets transmitted, 3 received, 0% packet loss, time 0ms
-])
-
 dnl Ipv6 fragmentation connectivity check.
 NS_CHECK_EXEC([at_ns0], [ping6 -s 1600 -q -c 3 -i 0.3 -w 2 fc00::2 | FORMAT_PING], [0], [dnl
 3 packets transmitted, 3 received, 0% packet loss, time 0ms
@@ -1780,11 +1757,6 @@ dnl waiting, we get occasional failures due to the following error:
 dnl "connect: Cannot assign requested address"
 OVS_WAIT_UNTIL([ip netns exec at_ns0 ping6 -c 1 fc00::2])
 
-dnl Basic connectivity check.
-NS_CHECK_EXEC([at_ns0], [ping6 -q -c 3 -i 0.3 -w 2 fc00::2 | FORMAT_PING], [0], [dnl
-3 packets transmitted, 3 received, 0% packet loss, time 0ms
-])
-
 dnl Send an IPv6 fragment. Some time later, it should expire.
 NS_CHECK_EXEC([at_ns0], [ping6 -s 1600 -q -c 1 -i 0.3 -w 2 fc00::2 | FORMAT_PING], [0], [dnl
 7 packets transmitted, 0 received, 100% packet loss, time 0ms
@@ -1824,11 +1796,6 @@ dnl waiting, we get occasional failures due to the following error:
 dnl "connect: Cannot assign requested address"
 OVS_WAIT_UNTIL([ip netns exec at_ns0 ping6 -c 1 fc00::2])
 
-dnl Basic connectivity check.
-NS_CHECK_EXEC([at_ns0], [ping6 -q -c 3 -i 0.3 -w 2 fc00:1::4 | FORMAT_PING], [0], [dnl
-3 packets transmitted, 3 received, 0% packet loss, time 0ms
-])
-
 dnl Ipv4 fragmentation connectivity check.
 NS_CHECK_EXEC([at_ns0], [ping6 -s 1600 -q -c 3 -i 0.3 -w 2 fc00:1::4 | FORMAT_PING], [0], [dnl
 3 packets transmitted, 3 received, 0% packet loss, time 0ms