This commit adds unit tests for BFD decay feature.
Signed-off-by: Alex Wang <al...@nicira.com>
---
tests/bfd.at | 189 +++++++++++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 180 insertions(+), 9 deletions(-)
diff --git a/tests/bfd.at b/tests/bfd.at
index c54fff0..c1f78d2 100644
--- a/tests/bfd.at
+++ b/tests/bfd.at
@@ -20,9 +20,9 @@ AT_CHECK([ovs-appctl bfd/show $1 | sed -e '/Time:/d' | sed -e
'/Discriminator/d'
m4_define([BFD_CHECK_TX], [
AT_CHECK([ovs-appctl bfd/show $1 | sed -n '/TX Interval/p'],[0],
[dnl
- TX Interval: Approx 1000ms
- Local Minimum TX Interval: $2
- Remote Minimum TX Interval: $3
+ TX Interval: Approx $2
+ Local Minimum TX Interval: $3
+ Remote Minimum TX Interval: $4
])
])
@@ -30,8 +30,8 @@ m4_define([BFD_CHECK_RX], [
AT_CHECK([ovs-appctl bfd/show $1 | sed -n '/RX Interval/p'],[0],
[dnl
RX Interval: Approx $2
- Local Minimum RX Interval: $2
- Remote Minimum RX Interval: $3
+ Local Minimum RX Interval: $3
+ Remote Minimum RX Interval: $4
])
])
AT_SETUP([bfd - basic config on different bridges])
@@ -202,14 +202,185 @@ BFD_CHECK([p0], [true], [false], [none], [up], [No
Diagnostic], [none], [up], [N
#Edit the min Tx value.
AT_CHECK([ovs-vsctl set interface p0 bfd:min_tx=200])
for i in `seq 0 20`; do ovs-appctl time/warp 100; done
-BFD_CHECK_TX([p0], [200ms], [100ms])
-BFD_CHECK_TX([p1], [100ms], [200ms])
+BFD_CHECK_TX([p0], [1000ms], [200ms], [100ms])
+BFD_CHECK_TX([p1], [1000ms], [100ms], [200ms])
#Edit the min Rx value.
AT_CHECK([ovs-vsctl set interface p1 bfd:min_rx=300])
for i in `seq 0 20`; do ovs-appctl time/warp 100; done
-BFD_CHECK_RX([p1], [300ms], [1000ms])
-BFD_CHECK_RX([p0], [1000ms], [300ms])
+BFD_CHECK_RX([p1], [300ms], [300ms], [1000ms])
+BFD_CHECK_RX([p0], [1000ms], [1000ms], [300ms])
OVS_VSWITCHD_STOP
AT_CLEANUP
+
+# Tests below are for bfd decay features.
+AT_SETUP([bfd - bfd decay])
+OVS_VSWITCHD_START([add-br br1 -- set bridge br1 datapath-type=dummy -- \
+ add-port br1 p1 -- set Interface p1 type=patch \
+ options:peer=p0 ofport_request=2 -- \
+ add-port br0 p0 -- set Interface p0 type=patch \
+ options:peer=p1 ofport_request=1 -- \
+ set Interface p0 bfd:enable=true bfd:min_tx=300
bfd:min_rx=300 bfd:decay_min_rx=3000 -- \
+ set Interface p1 bfd:enable=true bfd:min_tx=500
bfd:min_rx=500 -- \
+ add-port br1 p2 -- set Interface p2 type=internal
ofport_request=3])
+
+ovs-appctl time/stop
+
+
+# Test-1 BFD decay to 3000ms
+# bfd:decay_min_rx is set to 3000ms after the first 2500ms,
+# the bfd should up.
+for i in `seq 0 4`; do ovs-appctl time/warp 500; done
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [500ms], [300ms], [500ms])
+
+# advance the clock by 500ms.
+ovs-appctl time/warp 500
+# now at 3000ms, expect to see poll related flags at p0 and p1
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [final], [up],
[No Diagnostic])
+BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [poll], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [3000ms], [3000ms], [500ms])
+
+# since the tx_min of p0 is still 500ms, after 500ms from decay,
+# the control message will be sent p1 and p1 flag will back to none.
+ovs-appctl time/warp 500
+BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up],
[No Diagnostic])
+# the rx_min of p0 is 3000ms now. and p1 will send next control message
+# 3000ms after decay.
+for i in `seq 0 4`; do ovs-appctl time/warp 500; done
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [3000ms], [3000ms], [500ms])
+
+
+# Test-2 BFD decay go back to cfg_min_rx when there is traffic
+# receive packet at 1/100ms rate for 3000ms.
+for i in `seq 0 30`
+do
+ ovs-appctl time/warp 100
+ AT_CHECK([ovs-ofctl packet-out br1 3 2
"90e2ba01475000101856b2e80806000108000604000100101856b2e80202020300000000000002020202"],
+ [0], [stdout], [])
+done
+# after a decay interval (3000ms), the p0 min_rx will go back to
+# cfg_min_rx.
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [500ms], [300ms], [500ms])
+
+
+# Test-3 BFD decay go back to cfg_min_rx when decay_min_rx is changed.
+# advance the clock by 4000ms, so p0 is decayed.
+for i in `seq 0 5`; do ovs-appctl time/warp 500; done
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none], [up],
[No Diagnostic])
+BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [3000ms], [3000ms], [500ms])
+
+# change decay_min_rx to 1000ms.
+# for decay_min_rx < 2000ms, the decay detection time is set to 2000ms.
+# this should firstly reset the min_rx and then start poll.
+AT_CHECK([ovs-vsctl set Interface p0 bfd:decay_min_rx=1000])
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [final], [up],
[No Diagnostic])
+BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [poll], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [500ms], [300ms], [500ms])
+
+# for the following 1500ms, there should be no decay,
+# since the decay_detect_time is set to 2000ms.
+for i in `seq 0 2`
+do
+ ovs-appctl time/warp 500
+ BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none],
[up], [No Diagnostic])
+ BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none],
[up], [No Diagnostic])
+ BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+ BFD_CHECK_RX([p0], [500ms], [300ms], [500ms])
+done
+
+ovs-appctl time/warp 500
+# at 2000ms, decay should happen and there should be the poll.
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [final], [up],
[No Diagnostic])
+BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [poll], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [1000ms], [1000ms], [500ms])
+for i in `seq 0 4`; do ovs-appctl time/warp 500; done
+
+# Test-4 set min_rx to 800ms.
+# This should firstly reset the min_rx and then re-decay to 2000ms.
+AT_CHECK([ovs-vsctl set Interface p0 bfd:min_rx=800])
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [final], [up],
[No Diagnostic])
+BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [poll], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [800ms], [800ms], [500ms])
+
+# for the following 1600ms, there should be no decay,
+# since the decay detection time is set to 2000ms.
+for i in `seq 0 1`
+do
+ ovs-appctl time/warp 800
+ BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none],
[up], [No Diagnostic])
+ BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none],
[up], [No Diagnostic])
+ BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+ BFD_CHECK_RX([p0], [800ms], [800ms], [500ms])
+done
+
+ovs-appctl time/warp 500
+# at 2000ms, decay should happen and there should be the poll.
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [final], [up],
[No Diagnostic])
+BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [poll], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [1000ms], [1000ms], [500ms])
+for i in `seq 0 4`; do ovs-appctl time/warp 500; done
+
+
+# Test-5 set min_rx to 300ms and decay_min_rx to 5000ms.
+AT_CHECK([ovs-vsctl set Interface p0 bfd:min_rx=300 bfd:decay_min_rx=5000])
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [final], [up],
[No Diagnostic])
+BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [poll], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [500ms], [300ms], [500ms])
+
+# for decay_min_rx > 2000ms, the decay detection time is set to
+# decay_min_rx.
+# for the following 4500ms, there should be no decay,
+# since the decay detection time is set to 5000ms.
+for i in `seq 0 8`
+do
+ ovs-appctl time/warp 500
+ BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none],
[up], [No Diagnostic])
+ BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none],
[up], [No Diagnostic])
+ BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+ BFD_CHECK_RX([p0], [500ms], [300ms], [500ms])
+done
+
+ovs-appctl time/warp 500
+# at 5000ms, decay should happen and there should be the poll.
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [final], [up],
[No Diagnostic])
+BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [poll], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [5000ms], [5000ms], [500ms])
+for i in `seq 0 9`; do ovs-appctl time/warp 500; done
+
+
+# Test-6 set decay_min_rx to 0 to disable bfd decay.
+AT_CHECK([ovs-vsctl set Interface p0 bfd:decay_min_rx=0])
+AT_CHECK([ovs-appctl bfd/show], [0], [stdout], [])
+# The final flag must be set, since the configuration of bfd related variables
triggers a bfd poll.
+BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [final], [up],
[No Diagnostic])
+BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [poll], [up],
[No Diagnostic])
+BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+BFD_CHECK_RX([p0], [500ms], [300ms], [500ms])
+for i in `seq 0 20`
+do
+ ovs-appctl time/warp 500
+ BFD_CHECK([p0], [true], [false], [none], [up], [No Diagnostic], [none],
[up], [No Diagnostic])
+ BFD_CHECK([p1], [true], [false], [none], [up], [No Diagnostic], [none],
[up], [No Diagnostic])
+ BFD_CHECK_TX([p0], [500ms], [300ms], [500ms])
+ BFD_CHECK_RX([p0], [500ms], [300ms], [500ms])
+done
+
+AT_CHECK([ovs-vsctl del-br br1], [0], [ignore])
+AT_CLEANUP
+
--
1.7.9.5
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