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regress: flow expiry with multiple packets

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An optimization done by some switches is to push an exact-match entry into
the flow tables when a wildcard flow has a match.

Enhance the test_delete_send_flow_exp test to test a flow with multiple
packets to verify that the statistics for a wildcard flow include any
special hidden exact-match flows.

Change submitted by: Jean Tourrilhes <jt@hpl.hp.com>
This commit is contained in:
Glen Gibb committed 2010-03-10 17:36:42 -08:00
1 parent 46f85a45ed
commit 27e6742eaa
1 file changed
+50 -3
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regress/projects/black_box/regress/test_delete_send_flow_exp/run.pl
+50 -3
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@@ -11,7 +11,7 @@ sub my_test {
my $in_port = $$options_ref{'port_base'};
my $out_port = $in_port + 1;
my $test_pkt = get_default_black_box_pkt( $in_port, $out_port);
my $test_pkt = get_default_black_box_pkt( $in_port, $out_port, $$options_ref{'pkt_len'} );
my $max_idle = 0x0; # second before flow expiration -- never time out
my $wildcards = 0x0; # exact match
@@ -19,6 +19,7 @@ sub my_test {
my $flags = 0x0; # don't send flow expiry
my $flow_mod_pkt =
create_flow_mod_from_udp( $ofp, $test_pkt, $in_port, $out_port, $max_idle, $flags, $wildcards );
print "send flow mode without expiry\n";
print $sock $flow_mod_pkt;
# Delete the flow and verify that we don't see an expiry
@@ -33,13 +34,14 @@ sub my_test {
exit 1;
}
# Create a flow mod with expiry
# Create a flow mod with expiry
$flags = $enums{'OFPFF_SEND_FLOW_REM'}; # want flow expiry
$flow_mod_pkt =
create_flow_mod_from_udp( $ofp, $test_pkt, $in_port, $out_port, $max_idle, $flags, $wildcards );
print "send flow mode with expiry\n";
print $sock $flow_mod_pkt;
# Delete the flow and verify that we don't see an expiry
# Delete the flow and verify that we do see an expiry
$flags = 0x0; # Reset the flags to zero. Should not matter as it
# should only depend on the flags when the flow was installed.
$flow_mod_pkt =
@@ -51,6 +53,51 @@ sub my_test {
my $pkt_total = 0;
wait_for_flow_expired( $ofp, $sock, $options_ref, $pkt_len, $pkt_total );
# Redo the same test with a few packets to make sure stats are correct
# Jean II
# Create a flow mod with expiry
$flags = $enums{'OFPFF_SEND_FLOW_REM'}; # want flow expiry
$flow_mod_pkt =
create_flow_mod_from_udp( $ofp, $test_pkt, $in_port, $out_port, $max_idle, $flags, $wildcards );
print "send flow mode with expiry and with 3 packets\n";
print $sock $flow_mod_pkt;
# Give OF switch time to process the flow mod
usleep($$options_ref{'send_delay'});
usleep($$options_ref{'send_delay'});
# Send 3 packets, because first packet can be "special" - Jean II
# We should be using $options{'pkt_total'}, but that is stuck at 1
nftest_send("eth" . ($in_port), $test_pkt->packed);
nftest_send("eth" . ($in_port), $test_pkt->packed);
nftest_send("eth" . ($in_port), $test_pkt->packed);
# expect 3 packets
print "expect 3 packets\n";
nftest_expect("eth" . ($out_port), $test_pkt->packed);
nftest_expect("eth" . ($out_port), $test_pkt->packed);
nftest_expect("eth" . ($out_port), $test_pkt->packed);
# Wait for stats to refresh
sleep($$options_ref{'max_idle'});
#dpctl_show_flows($options_ref);
# Delete the flow and verify that we do see an expiry
$flags = 0x0; # Reset the flags to zero. Should not matter as it
# should only depend on the flags when the flow was installed.
$flow_mod_pkt =
create_flow_mod_from_udp_action( $ofp, $test_pkt, $in_port, $out_port, $max_idle,
$flags, $wildcards, "OFPFC_DELETE" );
print $sock $flow_mod_pkt;
# And now check the stats in the flow removed message...
my $pkt_len = $$options_ref{'pkt_len'};
my $pkt_total = 3;
wait_for_flow_expired( $ofp, $sock, $options_ref, $pkt_len, $pkt_total );
}
run_black_box_test( \&my_test, \@ARGV );