[ovs-dev] [PATCH ovn] ovn.at: Fix ARP test that fails due to timing.
Numan Siddique
numans at ovn.org
Tue Mar 24 14:45:41 UTC 2020
On Tue, Mar 24, 2020 at 7:06 PM Dumitru Ceara <dceara at redhat.com> wrote:
>
> The test for "ARP/ND request broadcast limiting" checks that injected
> ARP packets are not flooded using the MC_FLOOD multicast group. However,
> this introduces a race condition in the test because GARPs generated by
> OVN would also hit the same openflow rules.
>
> Remove the checks that use the MC_FLOOD group. They are also redundant
> as the rest of the test checks that packets are forwarded according to
> the newly added, higher priority rules.
>
> Fixes: 32f5ebb06226 ("ovn-northd: Limit ARP/ND broadcast domain whenever possible.")
> Signed-off-by: Dumitru Ceara <dceara at redhat.com>
Thanks Dumitru. I applied this patch to master and branch-20.03
Numan
> ---
> tests/ovn.at | 33 ---------------------------------
> 1 file changed, 33 deletions(-)
>
> diff --git a/tests/ovn.at b/tests/ovn.at
> index 4baf2e9..9a44f0a 100644
> --- a/tests/ovn.at
> +++ b/tests/ovn.at
> @@ -18015,9 +18015,6 @@ r1_dp_key=$(ovn-sbctl --bare --columns tunnel_key list datapath_binding rtr1)
> r1_tnl_key=$(ovn-sbctl --bare --columns tunnel_key list port_binding sw-rtr1)
> r2_tnl_key=$(ovn-sbctl --bare --columns tunnel_key list port_binding sw-rtr2)
>
> -mc_key=$(ovn-sbctl --bare --columns tunnel_key find multicast_group datapath=${sw_dp_uuid} name="_MC_flood")
> -mc_key=$(printf "%04x" $mc_key)
> -
> match_sw_metadata="metadata=0x${sw_dp_key}"
> match_r1_metadata="metadata=0x${r1_dp_key}"
>
> @@ -18042,11 +18039,6 @@ OVS_WAIT_UNTIL([
> grep n_packets=1 -c)
> test "0" = "${pkts_to_rtr2}"
> ])
> -OVS_WAIT_UNTIL([
> - pkts_flooded=$(ovs-ofctl dump-flows br-int | \
> - grep -E "${match_sw_metadata}" | grep ${mc_key} | grep -v n_packets=0 -c)
> - test "0" = "${pkts_flooded}"
> -])
>
> # Inject ND_NS for ofirst router owned IP address.
> src_ipv6=00100000000000000000000000000254
> @@ -18069,11 +18061,6 @@ OVS_WAIT_UNTIL([
> grep n_packets=1 -c)
> test "0" = "${pkts_to_rtr2}"
> ])
> -OVS_WAIT_UNTIL([
> - pkts_flooded=$(ovs-ofctl dump-flows br-int | \
> - grep -E "${match_sw_metadata}" | grep ${mc_key} | grep -v n_packets=0 -c)
> - test "0" = "${pkts_flooded}"
> -])
>
> # Configure load balancing on both routers.
> ovn-nbctl lb-add lb1-v4 10.0.0.11 42.42.42.1
> @@ -18108,11 +18095,6 @@ OVS_WAIT_UNTIL([
> grep n_packets=1 -c)
> test "0" = "${pkts_to_rtr2}"
> ])
> -OVS_WAIT_UNTIL([
> - pkts_flooded=$(ovs-ofctl dump-flows br-int | \
> - grep -E "${match_sw_metadata}" | grep ${mc_key} | grep -v n_packets=0 -c)
> - test "0" = "${pkts_flooded}"
> -])
>
> # Inject ND_NS for first router owned VIP address.
> src_ipv6=00100000000000000000000000000254
> @@ -18135,11 +18117,6 @@ OVS_WAIT_UNTIL([
> grep n_packets=1 -c)
> test "0" = "${pkts_to_rtr2}"
> ])
> -OVS_WAIT_UNTIL([
> - pkts_flooded=$(ovs-ofctl dump-flows br-int | \
> - grep -E "${match_sw_metadata}" | grep ${mc_key} | grep -v n_packets=0 -c)
> - test "0" = "${pkts_flooded}"
> -])
>
> # Configure NAT on both routers.
> ovn-nbctl lr-nat-add rtr1 dnat_and_snat 10.0.0.111 42.42.42.1
> @@ -18175,11 +18152,6 @@ OVS_WAIT_UNTIL([
> grep n_packets=1 -c)
> test "0" = "${pkts_to_rtr2}"
> ])
> -OVS_WAIT_UNTIL([
> - pkts_flooded=$(ovs-ofctl dump-flows br-int | \
> - grep -E "${match_sw_metadata}" | grep ${mc_key} | grep -v n_packets=0 -c)
> - test "0" = "${pkts_flooded}"
> -])
>
> # Inject ARP request for FIP1.
> send_arp_request 1 0 ${src_mac} $(ip_to_hex 10 0 0 254) $(ip_to_hex 10 0 0 121)
> @@ -18242,11 +18214,6 @@ OVS_WAIT_UNTIL([
> grep n_packets=1 -c)
> test "0" = "${pkts_to_rtr2}"
> ])
> -OVS_WAIT_UNTIL([
> - pkts_flooded=$(ovs-ofctl dump-flows br-int | \
> - grep -E "${match_sw_metadata}" | grep ${mc_key} | grep -v n_packets=0 -c)
> - test "0" = "${pkts_flooded}"
> -])
>
> # Inject ND_NS for FIP1.
> src_ipv6=00100000000000000000000000000254
> --
> 1.8.3.1
>
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