Let's just fold this into the bfd decay patch?  I haven't read it yet.

Ethan

On Mon, Aug 5, 2013 at 2:04 PM, Alex Wang <al...@nicira.com> wrote:
> 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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