On 11/7/25 5:27 PM, Lorenzo Bianconi via dev wrote:
>> The commit [1] ("northd: Add support for stateless ACLs with load balancers")
>> incorrectly handled connection tracking when enable-stateless-acl-with-lb is
>> enabled,
>> causing all stateless traffic in egress to be committed to conntrack.
>>
>> This fix properly implements the enable-stateless-acl-with-lb behavior by:
>> When enable-stateless-acl-with-lb is enabled:
>> - Still sending stateless traffic through connection tracker lookup
>> in egress.
>> - Adding new flow in ls_out_stateful to skip committing NEW stateless
>> connections.
>> - Only committing established connections for proper return traffic
>> handling.
>>
>> Fixes: abbc272ac771 ("northd: Add support for stateless ACLs with load
>> balancers")
>> Signed-off-by: Alexandra Rukomoinikova <[email protected]>
>> Acked-by: Mark Michelson <[email protected]>
>
> Acked-by: Lorenzo Bianconi <[email protected]>
>
>> ---
>> v1 --> v2: rebased, added ack
>> ---
Hi Alexandra, Mark, Lorenzo,
Thanks for the patch and reviews!
>> northd/northd.c | 26 +++++++-
>> northd/ovn-northd.8.xml | 10 ++-
>> tests/ovn-northd.at | 65 +++++++++----------
>> tests/system-ovn.at | 138 +++++++++++++++++++++++++++++-----------
>> 4 files changed, 164 insertions(+), 75 deletions(-)
>>
>> diff --git a/northd/northd.c b/northd/northd.c
>> index 55e31659f..cdf12ec86 100644
>> --- a/northd/northd.c
>> +++ b/northd/northd.c
>> @@ -6098,7 +6098,7 @@ build_stateless_filter(const struct ovn_datapath *od,
>> action,
>> &acl->header_,
>> lflow_ref);
>> - } else if (!od->lb_with_stateless_mode) {
>> + } else {
>> ovn_lflow_add_with_hint(lflows, od, S_SWITCH_OUT_PRE_ACL,
>> acl->priority + OVN_ACL_PRI_OFFSET,
>> acl->match,
>> @@ -8437,6 +8437,29 @@ build_lrouter_lb_affinity_default_flows(struct
>> ovn_datapath *od,
>> lflow_ref);
>> }
>>
>> +static void
>> +build_lb_rules_for_stateless_acl(struct lflow_table *lflows,
>> + struct ovn_lb_datapaths *lb_dps)
>> +{
>> + /* When enable-stateless-acl-with-lb is enabled:
>> + * 1. All stateless traffic must first pass through connection tracker
>> + * in egress.
>> + * 2. New connections (ct.new) will bypass commit phase.
>> + */
>> + struct hmapx_node *hmapx_node;
>> + struct ovn_datapath *od;
>> +
>> + HMAPX_FOR_EACH (hmapx_node, &lb_dps->ls_lb_with_stateless_mode) {
>> + od = hmapx_node->data;
>> + ovn_lflow_add(lflows, od, S_SWITCH_OUT_PRE_LB, 115,
>> + REGBIT_ACL_STATELESS" == 1",
>> + REGBIT_CONNTRACK_NAT" = 1; next;", lb_dps->lflow_ref);
>> + ovn_lflow_add(lflows, od, S_SWITCH_OUT_STATEFUL, 110,
>> + REGBIT_ACL_STATELESS " == 1 && ct.new",
>> + "next;", lb_dps->lflow_ref);
>> + }
>> +}
>> +
>> static void
>> build_lb_rules(struct lflow_table *lflows, struct ovn_lb_datapaths *lb_dps,
>> const struct ovn_datapaths *ls_datapaths,
>> @@ -12857,6 +12880,7 @@ build_lswitch_flows_for_lb(struct ovn_lb_datapaths
>> *lb_dps,
>> build_lb_rules_pre_stateful(lflows, lb_dps, ls_datapaths, match,
>> action);
>> build_lb_rules(lflows, lb_dps, ls_datapaths, match, action,
>> meter_groups, svc_mons_data);
>> + build_lb_rules_for_stateless_acl(lflows, lb_dps);
>> }
>>
>> /* If there are any load balancing rules, we should send the packet to
>> diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml
>> index b16d2398d..005fd87d1 100644
>> --- a/northd/ovn-northd.8.xml
>> +++ b/northd/ovn-northd.8.xml
>> @@ -2485,8 +2485,6 @@ output;
>> <p>
>> This is similar to ingress table <code>Pre-ACLs</code> except for
>> <code>to-lport</code> traffic.
>> - Except when the option enable-stateless-acl-with-lb is enabled:
>> - REGBIT_ACL_STATELESS ignored.
>> </p>
>>
>> <p>
>> @@ -2555,6 +2553,12 @@ output;
>> logical router datapath from logical switch datapath for routing.
>> </p>
>>
>> + <p>
>> + When <code>enable-stateless-acl-with-lb</code> is enabled,
>> + additional priority-115 flow is added to match traffic with
>> + <code>REGBIT_ACL_STATELESS</code> set and pass connection tracking.
>> + </p>
>> +
>> <h3>Egress Table 4: Pre-stateful</h3>
>>
>> <p>
>> @@ -2705,6 +2709,8 @@ output;
>> <p>
>> This is similar to ingress table <code>Stateful</code> except that
>> there are no rules added for load balancing new connections.
>> + When <code>enable-stateless-acl-with-lb</code> is enabled, new
>> + stateless connections bypass connection tracking.
>> </p>
>>
>> <ul>
>> diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
>> index b01cf3e95..452a46b9f 100644
>> --- a/tests/ovn-northd.at
>> +++ b/tests/ovn-northd.at
>> @@ -17423,7 +17423,7 @@ AT_CLEANUP
>> ])
>>
>> OVN_FOR_EACH_NORTHD_NO_HV([
>> -AT_SETUP([enable-stateless-acl-with-lb usage])
>> +AT_SETUP([ovn-northd: enable-stateless-acl-with-lb usage])
Nit: "ovn-northd:" is superfluous.
>> ovn_start ovn-northd
>>
>> AS_BOX([Create logical switches and ports.])
>> @@ -17449,51 +17449,44 @@ check ovn-nbctl --wait=sb ls-lb-add sw0 lb1
>>
>> ovn-sbctl dump-flows sw0 > sw0flows
>>
>> -AT_CHECK(
>> - [grep -E 'ls_(in|out)_pre_acl' sw0flows | grep reg0 | ovn_strip_lflows],
>> [0], [dnl
>> - table=??(ls_in_pre_acl ), priority=100 , match=(ip),
>> action=(reg0[[0]] = 1; next;)
>> - table=??(ls_in_pre_acl ), priority=2001 , match=(ip),
>> action=(reg0[[16]] = 1; next;)
>> - table=??(ls_out_pre_acl ), priority=100 , match=(ip),
>> action=(reg0[[0]] = 1; next;)
>> - table=??(ls_out_pre_acl ), priority=2001 , match=(ip),
>> action=(reg0[[16]] = 1; next;)
>> +AT_CHECK([grep -E 'ls_out_pre_lb' sw0flows | ovn_strip_lflows], [0], [dnl
>> + table=??(ls_out_pre_lb ), priority=0 , match=(1), action=(next;)
>> + table=??(ls_out_pre_lb ), priority=100 , match=(ip),
>> action=(reg0[[2]] = 1; next;)
>> + table=??(ls_out_pre_lb ), priority=110 , match=(eth.mcast),
>> action=(next;)
>> + table=??(ls_out_pre_lb ), priority=110 , match=(eth.src ==
>> $svc_monitor_mac), action=(next;)
>> + table=??(ls_out_pre_lb ), priority=110 , match=(nd || nd_rs ||
>> nd_ra || mldv1 || mldv2), action=(next;)
>> + table=??(ls_out_pre_lb ), priority=110 , match=(reg0[[16]] == 1),
>> action=(next;)
>> ])
>>
>> -AT_CHECK(
>> - [grep -E 'ls_out_acl_eval' sw0flows | grep 65532 | ovn_strip_lflows],
>> [0], [dnl
>> - table=??(ls_out_acl_eval ), priority=65532, match=(!ct.est && ct.rel
>> && !ct.new && ct_mark.blocked == 0), action=(reg8[[21]] = ct_label.nf_group;
>> reg8[[16]] = 1; ct_commit_nat;)
>> - table=??(ls_out_acl_eval ), priority=65532, match=(ct.est && !ct.rel
>> && ct.rpl && ct_mark.blocked == 0), action=(reg8[[21]] = ct_label.nf_group;
>> reg8[[16]] = 1; next;)
>> - table=??(ls_out_acl_eval ), priority=65532, match=(ct.est &&
>> ct_mark.allow_established == 1), action=(reg8[[21]] = ct_label.nf_group;
>> reg8[[16]] = 1; next;)
>> - table=??(ls_out_acl_eval ), priority=65532, match=(ct.inv || (ct.est
>> && ct.rpl && ct_mark.blocked == 1)), action=(reg8[[17]] = 1; next;)
>> - table=??(ls_out_acl_eval ), priority=65532, match=(nd || nd_ra ||
>> nd_rs || mldv1 || mldv2), action=(reg8[[16]] = 1; next;)
>> +AT_CHECK([grep -E 'ls_out_stateful' sw0flows | ovn_strip_lflows], [0], [dnl
>> + table=??(ls_out_stateful ), priority=0 , match=(1), action=(next;)
>> + table=??(ls_out_stateful ), priority=100 , match=(reg0[[1]] == 1 &&
>> reg0[[13]] == 0), action=(ct_commit { ct_mark.blocked = 0;
>> ct_mark.allow_established = reg0[[20]]; ct_label.acl_id = reg2[[16..31]];
>> ct_label.nf_group = 0; ct_label.nf_group_id = 0; }; next;)
>> + table=??(ls_out_stateful ), priority=100 , match=(reg0[[1]] == 1 &&
>> reg0[[13]] == 1), action=(ct_commit { ct_mark.blocked = 0;
>> ct_mark.allow_established = reg0[[20]]; ct_mark.obs_stage = reg8[[19..20]];
>> ct_mark.obs_collector_id = reg8[[8..15]]; ct_label.obs_point_id = reg9;
>> ct_label.acl_id = reg2[[16..31]]; ct_label.nf_group = 0;
>> ct_label.nf_group_id = 0; }; next;)
>> + table=??(ls_out_stateful ), priority=110 , match=(reg0[[1]] == 1 &&
>> reg0[[13]] == 0 && reg8[[21]] == 1), action=(ct_commit { ct_mark.blocked =
>> 0; ct_mark.allow_established = reg0[[20]]; ct_label.acl_id = reg2[[16..31]];
>> ct_label.nf_group = 1; ct_label.nf_group_id = reg0[[22..29]]; }; next;)
>> + table=??(ls_out_stateful ), priority=110 , match=(reg0[[1]] == 1 &&
>> reg0[[13]] == 1 && reg8[[21]] == 1), action=(ct_commit { ct_mark.blocked =
>> 0; ct_mark.allow_established = reg0[[20]]; ct_mark.obs_stage =
>> reg8[[19..20]]; ct_mark.obs_collector_id = reg8[[8..15]];
>> ct_label.obs_point_id = reg9; ct_label.acl_id = reg2[[16..31]];
>> ct_label.nf_group = 1; ct_label.nf_group_id = reg0[[22..29]]; }; next;)
>> ])
>>
>> AS_BOX([Enable enable-stateless-acl-with-lb option.])
>> check ovn-nbctl --wait=sb set logical_switch sw0
>> other_config:enable-stateless-acl-with-lb=true
>> ovn-sbctl dump-flows sw0 > sw0flows
>> -AT_CHECK(
>> - [grep -E 'ls_(in|out)_pre_acl' sw0flows | grep reg0 | ovn_strip_lflows],
>> [0], [dnl
>> - table=??(ls_in_pre_acl ), priority=100 , match=(ip),
>> action=(reg0[[0]] = 1; next;)
>> - table=??(ls_in_pre_acl ), priority=2001 , match=(ip),
>> action=(reg0[[16]] = 1; next;)
>> - table=??(ls_out_pre_acl ), priority=100 , match=(ip),
>> action=(reg0[[0]] = 1; next;)
>> -])
>>
>> -# We do not match conntrack invalid packets in case of load balancers with
>> stateless ACLs.
>> -AT_CHECK(
>> - [grep -E 'ls_out_acl_eval' sw0flows | grep 65532 | ovn_strip_lflows],
>> [0], [dnl
>> - table=??(ls_out_acl_eval ), priority=65532, match=(!ct.est && ct.rel
>> && !ct.new && ct_mark.blocked == 0), action=(reg8[[21]] = ct_label.nf_group;
>> reg8[[16]] = 1; ct_commit_nat;)
>> - table=??(ls_out_acl_eval ), priority=65532, match=((ct.est && ct.rpl
>> && ct_mark.blocked == 1)), action=(reg8[[17]] = 1; next;)
>> - table=??(ls_out_acl_eval ), priority=65532, match=(ct.est && !ct.rel
>> && ct.rpl && ct_mark.blocked == 0), action=(reg8[[21]] = ct_label.nf_group;
>> reg8[[16]] = 1; next;)
>> - table=??(ls_out_acl_eval ), priority=65532, match=(ct.est &&
>> ct_mark.allow_established == 1), action=(reg8[[21]] = ct_label.nf_group;
>> reg8[[16]] = 1; next;)
>> - table=??(ls_out_acl_eval ), priority=65532, match=(nd || nd_ra ||
>> nd_rs || mldv1 || mldv2), action=(reg8[[16]] = 1; next;)
>> +AT_CHECK([grep -E 'ls_out_stateful' sw0flows | ovn_strip_lflows], [0], [dnl
>> + table=??(ls_out_stateful ), priority=0 , match=(1), action=(next;)
>> + table=??(ls_out_stateful ), priority=100 , match=(reg0[[1]] == 1 &&
>> reg0[[13]] == 0), action=(ct_commit { ct_mark.blocked = 0;
>> ct_mark.allow_established = reg0[[20]]; ct_label.acl_id = reg2[[16..31]];
>> ct_label.nf_group = 0; ct_label.nf_group_id = 0; }; next;)
>> + table=??(ls_out_stateful ), priority=100 , match=(reg0[[1]] == 1 &&
>> reg0[[13]] == 1), action=(ct_commit { ct_mark.blocked = 0;
>> ct_mark.allow_established = reg0[[20]]; ct_mark.obs_stage = reg8[[19..20]];
>> ct_mark.obs_collector_id = reg8[[8..15]]; ct_label.obs_point_id = reg9;
>> ct_label.acl_id = reg2[[16..31]]; ct_label.nf_group = 0;
>> ct_label.nf_group_id = 0; }; next;)
>> + table=??(ls_out_stateful ), priority=110 , match=(reg0[[16]] == 1 &&
>> ct.new), action=(next;)
>> + table=??(ls_out_stateful ), priority=110 , match=(reg0[[1]] == 1 &&
>> reg0[[13]] == 0 && reg8[[21]] == 1), action=(ct_commit { ct_mark.blocked =
>> 0; ct_mark.allow_established = reg0[[20]]; ct_label.acl_id = reg2[[16..31]];
>> ct_label.nf_group = 1; ct_label.nf_group_id = reg0[[22..29]]; }; next;)
>> + table=??(ls_out_stateful ), priority=110 , match=(reg0[[1]] == 1 &&
>> reg0[[13]] == 1 && reg8[[21]] == 1), action=(ct_commit { ct_mark.blocked =
>> 0; ct_mark.allow_established = reg0[[20]]; ct_mark.obs_stage =
>> reg8[[19..20]]; ct_mark.obs_collector_id = reg8[[8..15]];
>> ct_label.obs_point_id = reg9; ct_label.acl_id = reg2[[16..31]];
>> ct_label.nf_group = 1; ct_label.nf_group_id = reg0[[22..29]]; }; next;)
>> ])
>>
>> -AT_CHECK([grep -E 'ls_in_pre_stateful' sw0flows | ovn_strip_lflows], [0],
>> [dnl
>> - table=??(ls_in_pre_stateful ), priority=0 , match=(1), action=(next;)
>> - table=??(ls_in_pre_stateful ), priority=100 , match=(reg0[[0]] == 1),
>> action=(ct_next;)
>> - table=??(ls_in_pre_stateful ), priority=105 , match=(tcp && ip4.dst ==
>> 10.0.0.4), action=(ct_lb_mark;)
>> - table=??(ls_in_pre_stateful ), priority=110 , match=(reg0[[2]] == 1),
>> action=(ct_lb_mark;)
>> - table=??(ls_in_pre_stateful ), priority=115 , match=(reg0[[2]] == 1 &&
>> ip.is_frag), action=(reg0[[19]] = 1; ct_lb_mark;)
>> - table=??(ls_in_pre_stateful ), priority=120 , match=(reg0[[2]] == 1 &&
>> ip4.dst == 10.0.0.4 && tcp.dst == 80), action=(reg4 = 10.0.0.4;
>> reg2[[0..15]] = 80; ct_lb_mark;)
>> - table=??(ls_in_pre_stateful ), priority=150 , match=(ip4.dst == 10.0.0.4
>> && tcp.dst == 80), action=(ct_lb_mark;)
>> +AT_CHECK([grep -E 'ls_out_pre_lb' sw0flows | ovn_strip_lflows], [0], [dnl
>> + table=??(ls_out_pre_lb ), priority=0 , match=(1), action=(next;)
>> + table=??(ls_out_pre_lb ), priority=100 , match=(ip),
>> action=(reg0[[2]] = 1; next;)
>> + table=??(ls_out_pre_lb ), priority=110 , match=(eth.mcast),
>> action=(next;)
>> + table=??(ls_out_pre_lb ), priority=110 , match=(eth.src ==
>> $svc_monitor_mac), action=(next;)
>> + table=??(ls_out_pre_lb ), priority=110 , match=(nd || nd_rs ||
>> nd_ra || mldv1 || mldv2), action=(next;)
>> + table=??(ls_out_pre_lb ), priority=110 , match=(reg0[[16]] == 1),
>> action=(next;)
>> + table=??(ls_out_pre_lb ), priority=115 , match=(reg0[[16]] == 1),
>> action=(reg0[[2]] = 1; next;)
>> ])
>>
>> AS_BOX([Create Load Balancer without port.])
>> diff --git a/tests/system-ovn.at b/tests/system-ovn.at
>> index 2b880ec37..2567cd779 100644
>> --- a/tests/system-ovn.at
>> +++ b/tests/system-ovn.at
>> @@ -5099,13 +5099,14 @@ AT_CLEANUP
>> ])
>>
>> OVN_FOR_EACH_NORTHD([
>> -AT_SETUP([enable-stateless-acl-with-lb usage])
>> +AT_SETUP([ovn-system: enable-stateless-acl-with-lb usage])
Nit: "ovn-system:" is superfluous.
>> AT_SKIP_IF([test $HAVE_NC = no])
>>
>> +CHECK_CONNTRACK()
>> ovn_start
>> OVS_TRAFFIC_VSWITCHD_START()
>> -
>> ADD_BR([br-int])
>> +ADD_BR([br-ext], [set Bridge br-ext fail-mode=standalone])
>>
>> # Set external-ids in br-int needed for ovn-controller
>> ovs-vsctl \
>> @@ -5115,62 +5116,127 @@ ovs-vsctl \
>> -- set Open_vSwitch . external-ids:ovn-encap-ip=169.0.0.1 \
>> -- set bridge br-int fail-mode=secure
>> other-config:disable-in-band=true
>>
>> +ovs-vsctl set Open_Vswitch . external_ids:ovn-bridge-mappings=phynet:br-ext
>> +
>> # Start ovn-controller
>> start_daemon ovn-controller
>>
>> # Logical network:
>> -# One logical switch with IPv4 load balancers that hairpin the traffic.
>> -check ovn-nbctl ls-add sw
>> -check ovn-nbctl lsp-add sw lsp1 -- lsp-set-addresses lsp1 00:00:00:00:00:01
>> -check ovn-nbctl lsp-add sw lsp2 -- lsp-set-addresses lsp2 00:00:00:00:00:02
>> +# Two LSs and one Lr - outside ls has access to a physical network
>> +# - ls1 has load balancers
>> +# outside - lr1 - ls1
>> +# Сheck that lb work with stateless acl, external traffic not related
>> +# to lb doesn't create conntrack records.
>> +# In switches egress pipeline, on which the balancers and stateless ACL
>> +# are condigured together - all traffic is checked for connection tracker,
>> +# but only traffic related to balancing is committed (established
>> connection)
>> +
>> +check ovn-nbctl ls-add outside
>> +
>> +check ovn-nbctl lsp-add outside public
>> +check ovn-nbctl lsp-set-type public localnet
We have new nbctl helpers now, "lsp-add-localnet-port" and
"lsp-add-router-port",
it's better to use them.
>> +check ovn-nbctl lsp-set-addresses public unknown
>> +check ovn-nbctl lsp-set-options public network_name=phynet
>> +
>> +check ovn-nbctl lsp-add outside outside-down
>> +check ovn-nbctl lsp-set-addresses outside-down router
>> +check ovn-nbctl lsp-set-type outside-down router
>> +check ovn-nbctl lsp-set-options outside-down router-port=lr1-up
>>
>> -check ovn-nbctl lb-add lb-ipv4-tcp 88.88.88.88:8080 42.42.42.1:4041 tcp
>> -check ovn-nbctl ls-lb-add sw lb-ipv4-tcp
>> +check ovn-nbctl lr-add lr1
>>
>> -check ovn-nbctl lr-add rtr
>> -check ovn-nbctl lrp-add rtr rtr-sw 00:00:00:00:01:00 42.42.42.254/24
>> -check ovn-nbctl lsp-add-router-port sw sw-rtr rtr-sw
>> +check ovn-nbctl lrp-add lr1 lr1-up 00:00:01:01:02:03 169.254.0.1/24
>> +check ovn-nbctl lrp-add lr1 lr1-down 00:00:02:01:02:03 192.168.0.1/24 \
>> + -- lrp-set-gateway-chassis lr1-up hv1
>> +
>> +check ovn-nbctl ls-add ls1
>> +
>> +check ovn-nbctl lsp-add ls1 ls1-up
>> +check ovn-nbctl lsp-set-addresses ls1-up router
>> +check ovn-nbctl lsp-set-type ls1-up router
>> +check ovn-nbctl lsp-set-options ls1-up router-port=lr1-down
>> +
>> +check ovn-nbctl lb-add lb-ipv4-tcp 192.168.0.1:8080 192.168.0.101:4041 tcp
>> +check ovn-nbctl ls-lb-add ls1 lb-ipv4-tcp
>> +
>> +check ovn-nbctl lb-add lb-ipv4-udp 192.168.0.1:8081 192.168.0.101:4042 udp
>> +check ovn-nbctl ls-lb-add ls1 lb-ipv4-udp
>>
>> ADD_NAMESPACES(lsp1)
>> -ADD_VETH(lsp1, lsp1, br-int, "42.42.42.1/24", "00:00:00:00:00:01", \
>> - "42.42.42.254")
>> +ADD_VETH(lsp1, lsp1, br-int, "192.168.0.101/24", "00:00:00:00:00:01", \
>> + "192.168.0.1")
>> +check ovn-nbctl lsp-add ls1 lsp1 \
>> +-- lsp-set-addresses lsp1 "00:00:00:00:00:01 192.168.0.101"
>>
>> ADD_NAMESPACES(lsp2)
>> -ADD_VETH(lsp2, lsp2, br-int, "42.42.42.2/24", "00:00:00:00:00:02", \
>> - "42.42.42.254")
>> +ADD_VETH(lsp2, lsp2, br-int, "192.168.0.102/24", "00:00:00:00:00:02", \
>> + "192.168.0.1")
>> +check ovn-nbctl lsp-add ls1 lsp2 \
>> +-- lsp-set-addresses lsp2 "00:00:00:00:00:02 192.168.0.102"
>>
>> # Wait for ovn-controller to catch up.
>> -wait_for_ports_up
Instead of removing the check we can restrict it to wait for lsp1
and lsp2:
wait_for_ports_up lsp1 lsp2
>> check ovn-nbctl --wait=hv sync
>>
>> -# Start IPv4 TCP server on lsp1.
>> -NETNS_DAEMONIZE([lsp1], [nc -l -k 42.42.42.1 4041], [lsp1.pid])
>> +ADD_NAMESPACES(external)
>> +ADD_VETH(external, external, br-ext, "169.254.0.101/24",
>> "00:00:00:00:00:04", \
>> + "169.254.0.1")
>>
>> -# Send the packet to VIP.
>> -NS_CHECK_EXEC([lsp1], [nc -z 88.88.88.88 8080], [0], [ignore], [ignore])
>> -NS_CHECK_EXEC([lsp2], [nc -z 88.88.88.88 8080], [0], [ignore], [ignore])
>> +NS_EXEC([external], [ip r add 192.168.0.0/24 via 169.254.0.1])
>> +NS_EXEC([lsp1], [ip r add 169.254.0.0/24 via 192.168.0.1])
>> +NS_EXEC([lsp2], [ip r add 169.254.0.1/24 via 192.168.0.1])
>>
>> -check ovn-nbctl --wait=hv acl-add sw to-lport 2000 'ip' allow-stateless
>> -check ovn-nbctl --wait=hv acl-add sw from-lport 2000 'ip' allow-stateless
>> +# Add stateless acl with load balancers.
>> +check ovn-nbctl acl-add ls1 to-lport 2000 1 allow-stateless
>> +check ovn-nbctl acl-add ls1 from-lport 2000 1 allow-stateless
>>
>> -# To provide work of load balancer with stateless ACL this is necessary
>> -# to set enable-stateless-acl-lb to true.
>> -check ovn-nbctl set logical_switch sw
>> other_config:enable-stateless-acl-with-lb=true
>> +check ovn-nbctl --wait=sb set logical_switch ls1
>> other_config:enable-stateless-acl-with-lb=true
>>
>> -check ovn-nbctl --wait=hv sync
>> +# Checking connectivity
>> +NS_CHECK_EXEC([external], [ping -q -c 3 -i 0.3 -w 2 192.168.0.101 |
>> FORMAT_PING], \
>> +[0], [dnl
>> +3 packets transmitted, 3 received, 0% packet loss, time 0ms
>> +])
>>
>> -# Send the packet to VIP after add stateless acl.
>> -NS_CHECK_EXEC([lsp1], [nc -z 88.88.88.88 8080], [0], [ignore], [ignore])
>> -NS_CHECK_EXEC([lsp2], [nc -z 88.88.88.88 8080], [0], [ignore], [ignore])
>> +NS_CHECK_EXEC([lsp1], [ping -q -c 3 -i 0.3 -w 2 192.168.0.102 |
>> FORMAT_PING], \
>> +[0], [dnl
>> +3 packets transmitted, 3 received, 0% packet loss, time 0ms
>> +])
>>
>> -check ovn-nbctl --wait=hv acl-add sw to-lport 2001 'ip' allow-related
>> -check ovn-nbctl --wait=hv acl-add sw from-lport 2001 'ip' allow-related
>> +zone_lsp1_id=$(ovn-appctl -t ovn-controller ct-zone-list | grep lsp1 | cut
>> -d ' ' -f2)
>> +zone_lsp2_id=$(ovn-appctl -t ovn-controller ct-zone-list | grep lsp2 | cut
>> -d ' ' -f2)
>>
>> -# Send the packet to VIP after add related acls.
>> -NS_CHECK_EXEC([lsp1], [nc -z 88.88.88.88 8080], [0], [ignore], [ignore])
>> -NS_CHECK_EXEC([lsp2], [nc -z 88.88.88.88 8080], [0], [ignore], [ignore])
>> +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
>>
>> -OVN_CLEANUP_CONTROLLER([hv1])
>> +# Start IPv4 TCP and UDP server on lsp1.
>> +NETNS_DAEMONIZE([lsp1], [nc -l -k 192.168.0.101 4041], [lsp1_tcp.pid])
>> +NETNS_DAEMONIZE([lsp1], [nc -u -l 192.168.0.101 4042], [lsp1_udp.pid])
>> +
>> +# Create another server without load balancer to check that it
>> +# does not create conntrack records.
>> +NETNS_DAEMONIZE([lsp1], [nc -l -k 192.168.0.101 4043], [lsp1_non_lb.pid])
>> +
>> +# Send the packet to VIP from private network.
>> +NS_CHECK_EXEC([lsp1], [nc -z 192.168.0.1 8080], [0], [ignore], [ignore])
>> +
>> +# Udp connections
>> +NS_CHECK_EXEC([lsp1], [echo a | nc -u 192.168.0.1 8081], [ignore],
>> [ignore], [ignore])
>> +
>> +# Check conntrack zone of lsp1 has tcp entry for lb
>> +AT_CHECK([ovs-appctl dpctl/dump-conntrack zone=$zone_lsp1_id | \
>> +FORMAT_CT(192.168.0.1) | \
>> +sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
>> +tcp,orig=(src=192.168.0.101,dst=192.168.0.1,sport=<cleared>,dport=<cleared>),reply=(src=192.168.0.101,dst=192.168.0.101,sport=<cleared>,dport=<cleared>),zone=<cleared>,mark=2,protoinfo=(state=<cleared>)
>> +udp,orig=(src=192.168.0.101,dst=192.168.0.1,sport=<cleared>,dport=<cleared>),reply=(src=192.168.0.101,dst=192.168.0.101,sport=<cleared>,dport=<cleared>),zone=<cleared>,mark=2
>> +])
>> +
>> +AT_CHECK([ovs-appctl dpctl/flush-conntrack])
>> +
>> +# Check that internal traffic not related to lb doesn't create conntrack
>> records
>> +NS_CHECK_EXEC([external], [nc -z 192.168.0.101 4043], [0], [])
>> +
>> +AT_CHECK([ovs-appctl dpctl/dump-conntrack zone=$zone_lsp1_id |
>> FORMAT_CT(192.168.0.101) | sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0],
>> [dnl])
>> +
>> +OVS_APP_EXIT_AND_WAIT([ovn-controller])
>>
>> as ovn-sb
>> OVS_APP_EXIT_AND_WAIT([ovsdb-server])
>> --
>> 2.48.1
>>
I went ahead and applied the patch to main and 25.09 after fixing
up the small issues listed above.
Regards,
Dumitru
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