On 3/15/24 20:34, Mark Michelson wrote:
> Hi Lorenzo,
>
> Thanks for the fix.
>
> Acked-by: Mark Michelson <mmich...@redhat.com>
>
Hi Lorenzo, Mark,
I'm afraid there's a bug in this patch, please see below.
> When this is merged, the following should also be folded in:
>
> ---
> diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml
> index 17b414144..0cf1c2bb5 100644
> --- a/northd/ovn-northd.8.xml
> +++ b/northd/ovn-northd.8.xml
> @@ -338,7 +338,7 @@
> </p>
>
> <p>
> - This table adds a priority-110 flow that matches 'recirculated'
> icmp{4,6}
> + This table adds a priority-105 flow that matches 'recirculated'
> icmp{4,6}
> error 'packet too big' to drop the packet.
> </p>
>
> ---
>
> This accounts for the change of priority introduced in this patch.
>
> I also noticed a small spelling mistake that should be corrected. I
> marked it below.
>
> On 2/13/24 08:32, Lorenzo Bianconi wrote:
>> Similar to what is already implemented for routed e/w traffic,
>> introduce pmtud support for e/w traffic between two logical switch ports
>> connected to the same logical switch, but running on two different
>> hypervisors.
>>
>> Reported-at: https://issues.redhat.com/browse/FDP-362
>> Signed-off-by: Lorenzo Bianconi <lorenzo.bianc...@redhat.com>
>> ---
>> controller/lflow.h | 1 +
>> controller/physical.c | 31 ++++++++-
>> northd/northd.c | 35 +++++++---
>> northd/ovn-northd.8.xml | 14 +++-
>> tests/multinode.at | 151 ++++++++++++++++++++++++++++++++++++++++
>> tests/ovn-northd.at | 22 ++++--
>> 6 files changed, 236 insertions(+), 18 deletions(-)
>>
>> diff --git a/controller/lflow.h b/controller/lflow.h
>> index 9b7ffa19c..906a26280 100644
>> --- a/controller/lflow.h
>> +++ b/controller/lflow.h
>> @@ -94,6 +94,7 @@ struct uuid;
>> #define OFTABLE_ECMP_NH 77
>> #define OFTABLE_CHK_LB_AFFINITY 78
>> #define OFTABLE_MAC_CACHE_USE 79
>> +#define OFTABLE_CT_ZONE_LOOKUP 80
>> struct lflow_ctx_in {
>> struct ovsdb_idl_index *sbrec_multicast_group_by_name_datapath;
>> diff --git a/controller/physical.c b/controller/physical.c
>> index c32642d2c..6a9327b8d 100644
>> --- a/controller/physical.c
>> +++ b/controller/physical.c
>> @@ -2451,8 +2451,37 @@ physical_run(struct physical_ctx *p_ctx,
>> p_ctx->n_encap_ips,
>> p_ctx->encap_ips,
>> flow_table, &ofpacts);
This whole chunk below should be part of consider_port_binding().
Otherwise, we fail to incrementally add flows for newly bound interfaces.
physical_run() is only called on recompute while consider_port_binding()
is called in both paths (recompute and incremetally process updates).
We should add a test case for this.
One way to hit the bug is to start an OVN sandbox. Then:
$ ./ovn-setup.sh
$ ovn-sbctl show
Chassis chassis-1
hostname: sandbox
Encap geneve
ip: "127.0.0.1"
options: {csum="true"}
Port_Binding sw1-port1
Port_Binding sw0-port1
# Two ports are bound locally, we expect 2 non-default flows in table 80:
$ ovs-ofctl dump-flows br-int table=80
cookie=0x0, duration=51.758s, table=80, n_packets=0, n_bytes=0,
priority=100,reg14=0x1,metadata=0x1
actions=load:0x3->NXM_NX_REG13[0..15],load:0x2->NXM_NX_REG11[],load:0x7->NXM_NX_REG12[],resubmit(,8)
cookie=0x0, duration=1.116s, table=80, n_packets=0, n_bytes=0,
priority=100,reg14=0x1,metadata=0x2
actions=load:0x8->NXM_NX_REG13[0..15],load:0x6->NXM_NX_REG11[],load:0x5->NXM_NX_REG12[],resubmit(,8)
cookie=0x0, duration=53.640s, table=80, n_packets=0, n_bytes=0, priority=0
actions=resubmit(,8)
# Add a new locally bound port:
$ ovn-nbctl lsp-add sw0 sw0-bar
$ ovs-vsctl add-port br-int sw0-bar -- set interface sw0-bar
external_ids:iface-id=sw0-bar
$ ovn-sbctl show
Chassis chassis-1
hostname: sandbox
Encap geneve
ip: "127.0.0.1"
options: {csum="true"}
Port_Binding sw1-port1
Port_Binding sw0-port1
Port_Binding sw0-bar
# Three ports are bound locally, we expect 3 non-default flows in table 80:
$ ovs-ofctl dump-flows br-int table=80
cookie=0x0, duration=123.946s, table=80, n_packets=0, n_bytes=0,
priority=100,reg14=0x1,metadata=0x1
actions=load:0x3->NXM_NX_REG13[0..15],load:0x2->NXM_NX_REG11[],load:0x7->NXM_NX_REG12[],resubmit(,8)
cookie=0x0, duration=73.304s, table=80, n_packets=0, n_bytes=0,
priority=100,reg14=0x1,metadata=0x2
actions=load:0x8->NXM_NX_REG13[0..15],load:0x6->NXM_NX_REG11[],load:0x5->NXM_NX_REG12[],resubmit(,8)
cookie=0x0, duration=125.828s, table=80, n_packets=0, n_bytes=0, priority=0
actions=resubmit(,8)
# Only 2 are there.. trigger a recompute:
$ ovn-appctl recompute
$ ovs-ofctl dump-flows br-int table=80
cookie=0x0, duration=167.205s, table=80, n_packets=0, n_bytes=0,
priority=100,reg14=0x1,metadata=0x1
actions=load:0x3->NXM_NX_REG13[0..15],load:0x2->NXM_NX_REG11[],load:0x7->NXM_NX_REG12[],resubmit(,8)
cookie=0x0, duration=116.563s, table=80, n_packets=0, n_bytes=0,
priority=100,reg14=0x1,metadata=0x2
actions=load:0x8->NXM_NX_REG13[0..15],load:0x6->NXM_NX_REG11[],load:0x5->NXM_NX_REG12[],resubmit(,8)
cookie=0x0, duration=2.673s, table=80, n_packets=0, n_bytes=0,
priority=100,reg14=0x3,metadata=0x1
actions=load:0x9->NXM_NX_REG13[0..15],load:0x2->NXM_NX_REG11[],load:0x7->NXM_NX_REG12[],resubmit(,8)
cookie=0x0, duration=169.087s, table=80, n_packets=0, n_bytes=0, priority=0
actions=resubmit(,8)
Regards,
Dumitru
>> +
>> + if (!local_binding_get_primary_pb(p_ctx->local_bindings,
>> + binding->logical_port)) {
>> + continue;
>> + }
>> +
>> + /* Table 80, priority 100.
>> + * =======================
>> + *
>> + * Process ICMP{4,6} error packets too big locally generalted
>> from the
>
> s/generalted/generated/
>
>> + * kernel in order to lookup proper ct_zone. */
>> + struct match match = MATCH_CATCHALL_INITIALIZER;
>> + match_set_metadata(&match,
>> htonll(binding->datapath->tunnel_key));
>> + match_set_reg(&match, MFF_LOG_INPORT - MFF_REG0,
>> binding->tunnel_key);
>> +
>> + ofpbuf_clear(&ofpacts);
>> + struct zone_ids zone_ids = get_zone_ids(binding,
>> p_ctx->ct_zones);
>> + put_zones_ofpacts(&zone_ids, &ofpacts);
>> + put_resubmit(OFTABLE_LOG_INGRESS_PIPELINE, &ofpacts);
>> + ofctrl_add_flow(flow_table, OFTABLE_CT_ZONE_LOOKUP, 100, 0,
>> + &match, &ofpacts, hc_uuid);
>> }
>> + /* Default flow for CT_ZONE_LOOKUP Table. */
>> + struct match ct_look_def_match;
>> + match_init_catchall(&ct_look_def_match);
>> + ofpbuf_clear(&ofpacts);
>> + put_resubmit(OFTABLE_LOG_INGRESS_PIPELINE, &ofpacts);
>> + ofctrl_add_flow(flow_table, OFTABLE_CT_ZONE_LOOKUP, 0, 0,
>> + &ct_look_def_match, &ofpacts, hc_uuid);
>> +
>> /* Handle output to multicast groups, in tables 40 and 41. */
>> const struct sbrec_multicast_group *mc;
>> SBREC_MULTICAST_GROUP_TABLE_FOR_EACH (mc, p_ctx->mc_group_table) {
>> @@ -2511,7 +2540,7 @@ physical_run(struct physical_ctx *p_ctx,
>> /* Add specif flows for E/W ICMPv{4,6} packets if tunnelled
>> packets
>> * do not fit path MTU.
>> */
>> - put_resubmit(OFTABLE_LOG_INGRESS_PIPELINE, &ofpacts);
>> + put_resubmit(OFTABLE_CT_ZONE_LOOKUP, &ofpacts);
>> /* IPv4 */
>> match_init_catchall(&match);
>> diff --git a/northd/northd.c b/northd/northd.c
>> index a174a4dcd..34c56f95e 100644
>> --- a/northd/northd.c
>> +++ b/northd/northd.c
>> @@ -8634,7 +8634,7 @@ build_lswitch_lflows_admission_control(struct
>> ovn_datapath *od,
>> ovs_assert(od->nbs);
>> /* Default action for recirculated ICMP error 'packet too
>> big'. */
>> - ovn_lflow_add(lflows, od, S_SWITCH_IN_CHECK_PORT_SEC, 110,
>> + ovn_lflow_add(lflows, od, S_SWITCH_IN_CHECK_PORT_SEC, 105,
>> "((ip4 && icmp4.type == 3 && icmp4.code == 4) ||"
>> " (ip6 && icmp6.type == 2 && icmp6.code == 0)) &&"
>> " flags.tunnel_rx == 1", debug_drop_action(),
>> lflow_ref);
>> @@ -11822,7 +11822,24 @@ build_lswitch_icmp_packet_toobig_admin_flows(
>> {
>> ovs_assert(op->nbsp);
>> + ds_clear(match);
>> if (!lsp_is_router(op->nbsp)) {
>> + struct eth_addr mac;
>> + if (!op->nbsp->n_addresses ||
>> + !ovs_scan(op->nbsp->addresses[0], ETH_ADDR_SCAN_FMT,
>> + ETH_ADDR_SCAN_ARGS(mac))) {
>> + return;
>> + }
>> +
>> + ds_put_format(match,
>> + "((ip4 && icmp4.type == 3 && icmp4.code == 4) ||"
>> + " (ip6 && icmp6.type == 2 && icmp6.code == 0)) &&"
>> + " eth.src == "ETH_ADDR_FMT" && outport == %s &&"
>> + " !is_chassis_resident(%s) && flags.tunnel_rx
>> == 1",
>> + ETH_ADDR_ARGS(mac), op->json_key, op->json_key);
>> + ovn_lflow_add(lflows, op->od, S_SWITCH_IN_CHECK_PORT_SEC, 110,
>> + ds_cstr(match), "outport <-> inport; next;",
>> + op->lflow_ref);
>> return;
>> }
>> @@ -11831,26 +11848,28 @@ build_lswitch_icmp_packet_toobig_admin_flows(
>> return;
>> }
>> - ds_clear(match);
>> if (peer->od->is_gw_router) {
>> ds_put_format(match,
>> "((ip4 && icmp4.type == 3 && icmp4.code == 4) ||"
>> " (ip6 && icmp6.type == 2 && icmp6.code == 0))
>> && "
>> "eth.src == %s && outport == %s &&
>> flags.tunnel_rx == 1",
>> peer->nbrp->mac, op->json_key);
>> + ovn_lflow_add(lflows, op->od, S_SWITCH_IN_CHECK_PORT_SEC, 120,
>> + ds_cstr(match), "outport <-> inport; next;",
>> + op->lflow_ref);
>> } else {
>> ds_put_format(match,
>> "((ip4 && icmp4.type == 3 && icmp4.code == 4) ||"
>> " (ip6 && icmp6.type == 2 && icmp6.code == 0))
>> && "
>> "eth.dst == %s && flags.tunnel_rx == 1",
>> peer->nbrp->mac);
>> + ds_clear(actions);
>> + ds_put_format(actions,
>> + "outport <-> inport;
>> next(pipeline=ingress,table=%d);",
>> + ovn_stage_get_table(S_SWITCH_IN_L2_LKUP));
>> + ovn_lflow_add(lflows, op->od, S_SWITCH_IN_CHECK_PORT_SEC, 120,
>> + ds_cstr(match), ds_cstr(actions), op->lflow_ref);
>> }
>> - ds_clear(actions);
>> - ds_put_format(actions,
>> - "outport <-> inport;
>> next(pipeline=ingress,table=%d);",
>> - ovn_stage_get_table(S_SWITCH_IN_L2_LKUP));
>> - ovn_lflow_add(lflows, op->od, S_SWITCH_IN_CHECK_PORT_SEC, 120,
>> - ds_cstr(match), ds_cstr(actions), op->lflow_ref);
>> }
>> static void
>> diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml
>> index 9583abeff..840a4f6a3 100644
>> --- a/northd/ovn-northd.8.xml
>> +++ b/northd/ovn-northd.8.xml
>> @@ -324,8 +324,7 @@
>> 'packet too big' and <code>eth.src == <var>D</var> &&
>> outport == <var>P</var> && flags.tunnel_rx == 1</code>
>> where
>> <var>D</var> is the peer logical router port <var>RP</var> mac
>> address,
>> - swaps inport and outport and applies the action <code>
>> - next(pipeline=S_SWITCH_IN_L2_LKUP)</code>.
>> + swaps inport and outport and applies the action <code>next</code>.
>> </p>
>> <p>
>> @@ -338,7 +337,16 @@
>> </p>
>> <p>
>> - This table adds a priority-110 flow that matches 'recirculated'
>> icmp{4,6}
>> + For each logical switch port <var>P</var> a priority-110 flow that
>> + matches 'recirculated' icmp{4,6} error 'packet too big' and <code>
>> + eth.src == <var>D</var> && outport == <var>P</var>
>> &&
>> + !is_chassis_resident("<var>P</var>") && flags.tunnel_rx
>> == 1
>> + </code> where <var>D</var> is the logical switch port mac address,
>> + swaps inport and outport and applies the action <code>next</code>.
>> + </p>
>> +
>> + <p>
>> + This table adds a priority-105 flow that matches 'recirculated'
>> icmp{4,6}
>> error 'packet too big' to drop the packet.
>> </p>
>> diff --git a/tests/multinode.at b/tests/multinode.at
>> index 0187382be..ef40db9b7 100644
>> --- a/tests/multinode.at
>> +++ b/tests/multinode.at
>> @@ -154,6 +154,11 @@ check multinode_nbctl lr-nat-add lr0 snat
>> 172.20.0.100 20.0.0.0/24
>> check multinode_nbctl acl-add sw0 from-lport 1002 'ip4 || ip6'
>> allow-related
>> check multinode_nbctl acl-add sw1 from-lport 1002 'ip4 || ip6'
>> allow-related
>> +# create LB
>> +check multinode_nbctl lb-add lb0 10.0.0.1:8080 10.0.0.4:8080 udp
>> +check multinode_nbctl ls-lb-add sw0 lb0
>> +M_NS_CHECK_EXEC([ovn-chassis-2], [sw0p2], [nc -u -l 8080 >/dev/null
>> 2>&1 &])
>> +
>> m_as ovn-gw-1 ip netns add ovn-ext0
>> m_as ovn-gw-1 ovs-vsctl add-port br-ex ext0 -- set interface ext0
>> type=internal
>> m_as ovn-gw-1 ip link set ext0 netns ovn-ext0
>> @@ -207,6 +212,14 @@ M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ping
>> -q -c 3 -i 0.3 -w 2 172.20.1.2 |
>> 3 packets transmitted, 3 received, 0% packet loss, time 0ms
>> ])
>> +m_as ovn-chassis-1 ip route change 170.168.0.0/16 mtu 1000 dev eth1
>> +for i in $(seq 30); do
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [sh -c 'dd bs=512 count=2
>> if=/dev/urandom |nc -u 10.0.0.1 8080'], [ignore], [ignore], [ignore])
>> +done
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route get 10.0.0.1 dev
>> sw0p1 | grep -q 'mtu 942'])
>> +
>> +killall nc
>> +
>> AT_CLEANUP
>> AT_SETUP([ovn multinode pmtu - distributed router - vxlan])
>> @@ -696,6 +709,11 @@ check multinode_nbctl lr-nat-add lr0 snat
>> 172.20.0.100 20.0.0.0/24
>> check multinode_nbctl acl-add sw0 from-lport 1002 'ip4 || ip6'
>> allow-related
>> check multinode_nbctl acl-add sw1 from-lport 1002 'ip4 || ip6'
>> allow-related
>> +# create LB
>> +check multinode_nbctl lb-add lb0 10.0.0.1:8080 20.0.0.3:8080 udp
>> +check multinode_nbctl lr-lb-add lr0 lb0
>> +M_NS_CHECK_EXEC([ovn-chassis-2], [sw1p1], [nc -u -l 8080 >/dev/null
>> 2>&1 &])
>> +
>> m_as ovn-gw-1 ip netns add ovn-ext0
>> m_as ovn-gw-1 ovs-vsctl add-port br-ex ext0 -- set interface ext0
>> type=internal
>> m_as ovn-gw-1 ip link set ext0 netns ovn-ext0
>> @@ -751,6 +769,18 @@ M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ping
>> -q -c 3 -i 0.3 -w 2 172.20.1.2 |
>> M_NS_CHECK_EXEC([ovn-gw-1], [ovn-ext0], [ip link set dev ext1 mtu
>> 1100])
>> M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ping -c 20 -i 0.5 -s 1300
>> -M do 172.20.1.2 2>&1 |grep -q "mtu = 1100"])
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route flush dev sw0p1])
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route add 10.0.0.0/24
>> dev sw0p1])
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route add default via
>> 10.0.0.1 dev sw0p1])
>> +
>> +m_as ovn-chassis-1 ip route change 170.168.0.0/16 mtu 1000 dev eth1
>> +for i in $(seq 30); do
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [sh -c 'dd bs=512 count=2
>> if=/dev/urandom |nc -u 10.0.0.1 8080'], [ignore], [ignore], [ignore])
>> +done
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route get 10.0.0.1 dev
>> sw0p1 | grep -q 'mtu 942'])
>> +
>> +killall nc
>> +
>> AT_CLEANUP
>> AT_SETUP([ovn multinode pmtu - gw router - vxlan])
>> @@ -834,6 +864,11 @@ check multinode_nbctl lr-nat-add lr0 snat
>> 172.20.0.100 20.0.0.0/24
>> check multinode_nbctl acl-add sw0 from-lport 1002 'ip4 || ip6'
>> allow-related
>> check multinode_nbctl acl-add sw1 from-lport 1002 'ip4 || ip6'
>> allow-related
>> +# create LB
>> +check multinode_nbctl lb-add lb0 10.0.0.1:8080 20.0.0.3:8080 udp
>> +check multinode_nbctl lr-lb-add lr0 lb0
>> +M_NS_CHECK_EXEC([ovn-chassis-2], [sw1p1], [nc -u -l 8080 >/dev/null
>> 2>&1 &])
>> +
>> m_as ovn-gw-1 ip netns add ovn-ext0
>> m_as ovn-gw-1 ovs-vsctl add-port br-ex ext0 -- set interface ext0
>> type=internal
>> m_as ovn-gw-1 ip link set ext0 netns ovn-ext0
>> @@ -882,4 +917,120 @@ M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ping
>> -q -c 3 -i 0.3 -w 2 172.20.1.2 |
>> M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ping -c 20 -i 0.5 -s
>> 1300 -M do 172.20.1.2 2>&1 |grep -q "mtu = 1150"])
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route flush dev sw0p1])
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route add 10.0.0.0/24
>> dev sw0p1])
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route add default via
>> 10.0.0.1 dev sw0p1])
>> +
>> +m_as ovn-chassis-1 ip route change 170.168.0.0/16 mtu 1000 dev eth1
>> +for i in $(seq 30); do
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [sh -c 'dd bs=512 count=2
>> if=/dev/urandom |nc -u 10.0.0.1 8080'], [ignore], [ignore], [ignore])
>> +done
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route get 10.0.0.1 dev
>> sw0p1 | grep -q 'mtu 950'])
>> +
>> +killall nc
>> +
>> +AT_CLEANUP
>> +
>> +AT_SETUP([ovn multinode pmtu - logical switch - geneve])
>> +
>> +# Check that ovn-fake-multinode setup is up and running
>> +check_fake_multinode_setup
>> +
>> +# Delete the multinode NB and OVS resources before starting the test.
>> +cleanup_multinode_resources
>> +
>> +m_as ovn-chassis-1 ip link del sw0p1-p
>> +m_as ovn-chassis-2 ip link del sw0p2-p
>> +
>> +# Reset geneve tunnels
>> +for c in ovn-chassis-1 ovn-chassis-2 ovn-gw-1
>> +do
>> + m_as $c ovs-vsctl set open . external-ids:ovn-encap-type=geneve
>> +done
>> +
>> +OVS_WAIT_UNTIL([m_as ovn-chassis-1 ip link show | grep -q genev_sys])
>> +OVS_WAIT_UNTIL([m_as ovn-chassis-2 ip link show | grep -q genev_sys])
>> +OVS_WAIT_UNTIL([m_as ovn-gw-1 ip link show | grep -q genev_sys])
>> +
>> +# Test East-West switching
>> +check multinode_nbctl ls-add sw0
>> +check multinode_nbctl lsp-add sw0 sw0-port1
>> +check multinode_nbctl lsp-set-addresses sw0-port1 "50:54:00:00:00:03
>> 10.0.0.3 1000::3"
>> +check multinode_nbctl lsp-add sw0 sw0-port2
>> +check multinode_nbctl lsp-set-addresses sw0-port2 "50:54:00:00:00:04
>> 10.0.0.4 1000::4"
>> +
>> +m_as ovn-chassis-1 /data/create_fake_vm.sh sw0-port1 sw0p1
>> 50:54:00:00:00:03 10.0.0.3 24 10.0.0.1 1000::3/64 1000::a
>> +m_as ovn-chassis-2 /data/create_fake_vm.sh sw0-port2 sw0p2
>> 50:54:00:00:00:04 10.0.0.4 24 10.0.0.1 1000::4/64 1000::a
>> +
>> +# Create the second logical switch with one port
>> +check multinode_nbctl ls-add sw1
>> +check multinode_nbctl lsp-add sw1 sw1-port1
>> +check multinode_nbctl lsp-set-addresses sw1-port1 "40:54:00:00:00:03
>> 20.0.0.3 2000::3"
>> +
>> +# Create a logical router and attach both logical switches
>> +check multinode_nbctl lr-add lr0
>> +check multinode_nbctl lrp-add lr0 lr0-sw0 00:00:00:00:ff:01
>> 10.0.0.1/24 1000::a/64
>> +check multinode_nbctl lsp-add sw0 sw0-lr0
>> +check multinode_nbctl lsp-set-type sw0-lr0 router
>> +check multinode_nbctl lsp-set-addresses sw0-lr0 router
>> +check multinode_nbctl lsp-set-options sw0-lr0 router-port=lr0-sw0
>> +
>> +check multinode_nbctl lrp-add lr0 lr0-sw1 00:00:00:00:ff:02
>> 20.0.0.1/24 2000::a/64
>> +check multinode_nbctl lsp-add sw1 sw1-lr0
>> +check multinode_nbctl lsp-set-type sw1-lr0 router
>> +check multinode_nbctl lsp-set-addresses sw1-lr0 router
>> +check multinode_nbctl lsp-set-options sw1-lr0 router-port=lr0-sw1
>> +
>> +m_as ovn-chassis-2 /data/create_fake_vm.sh sw1-port1 sw1p1
>> 40:54:00:00:00:03 20.0.0.3 24 20.0.0.1 2000::3/64 2000::a
>> +
>> +check multinode_nbctl lr-nat-add lr0 snat 172.20.0.100 10.0.0.0/24
>> +check multinode_nbctl lr-nat-add lr0 snat 172.20.0.100 20.0.0.0/24
>> +
>> +check multinode_nbctl lrp-set-gateway-chassis lr0-sw0 ovn-chassis-1 10
>> +check multinode_nbctl lrp-set-gateway-chassis lr0-sw1 ovn-chassis-2 10
>> +
>> +# create some ACLs
>> +check multinode_nbctl acl-add sw0 from-lport 1002 'ip4 || ip6'
>> allow-related
>> +check multinode_nbctl acl-add sw1 from-lport 1002 'ip4 || ip6'
>> allow-related
>> +
>> +check multinode_nbctl lb-add lb0 10.0.0.1:8080 10.0.0.4:8080 udp
>> +check multinode_nbctl ls-lb-add sw0 lb0
>> +M_NS_CHECK_EXEC([ovn-chassis-2], [sw0p2], [nc -u -l 8080 >/dev/null
>> 2>&1 &])
>> +
>> +m_wait_for_ports_up
>> +
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ping -q -c 3 -i 0.3 -w 2
>> 10.0.0.4 | FORMAT_PING], \
>> +[0], [dnl
>> +3 packets transmitted, 3 received, 0% packet loss, time 0ms
>> +])
>> +
>> +# Change ptmu for the geneve tunnel
>> +m_as ovn-chassis-1 ip route change 170.168.0.0/16 mtu 1200 dev eth1
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ping -c 5 -s 1300 -M do
>> 10.0.0.4 2>&1 |grep -q "message too long, mtu=1142"])
>> +
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route flush dev sw0p1])
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route add 10.0.0.0/24
>> dev sw0p1])
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route add default via
>> 10.0.0.1 dev sw0p1])
>> +
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ping -q -c 3 -i 0.3 -w 2
>> 20.0.0.3 | FORMAT_PING], \
>> +[0], [dnl
>> +3 packets transmitted, 3 received, 0% packet loss, time 0ms
>> +])
>> +
>> +# Change ptmu for the geneve tunnel
>> +m_as ovn-chassis-1 ip route change 170.168.0.0/16 mtu 1100 dev eth1
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ping -c 5 -s 1300 -M do
>> 20.0.0.3 2>&1 |grep -q "message too long, mtu=1042"])
>> +
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route flush dev sw0p1])
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route add 10.0.0.0/24
>> dev sw0p1])
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route add default via
>> 10.0.0.1 dev sw0p1])
>> +
>> +m_as ovn-chassis-1 ip route change 170.168.0.0/16 mtu 1000 dev eth1
>> +for i in $(seq 30); do
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [sh -c 'dd bs=512 count=2
>> if=/dev/urandom |nc -u 10.0.0.1 8080'], [ignore], [ignore], [ignore])
>> +done
>> +M_NS_CHECK_EXEC([ovn-chassis-1], [sw0p1], [ip route get 10.0.0.1 dev
>> sw0p1 | grep -q 'mtu 942'])
>> +
>> +killall nc
>> +
>> AT_CLEANUP
>> diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
>> index 591ad5aad..b04cc4893 100644
>> --- a/tests/ovn-northd.at
>> +++ b/tests/ovn-northd.at
>> @@ -8507,7 +8507,7 @@ ovn_strip_lflows ], [0], [dnl
>> table=??(ls_in_apply_port_sec), priority=50 , match=(reg0[[15]]
>> == 1), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(eth.src[[40]]), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(vlan.present), action=(drop;)
>> - table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=105 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=50 , match=(1),
>> action=(reg0[[15]] = check_in_port_sec(); next;)
>> table=??(ls_in_l2_lkup ), priority=0 , match=(1),
>> action=(outport = get_fdb(eth.dst); next;)
>> table=??(ls_in_l2_lkup ), priority=110 , match=(eth.dst ==
>> $svc_monitor_mac && (tcp || icmp || icmp6)),
>> action=(handle_svc_check(inport);)
>> @@ -8533,7 +8533,9 @@ ovn_strip_lflows ], [0], [dnl
>> table=??(ls_in_apply_port_sec), priority=50 , match=(reg0[[15]]
>> == 1), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(eth.src[[40]]), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(vlan.present), action=(drop;)
>> - table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=105 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && eth.src == 00:00:00:00:00:01 && outport ==
>> "sw0p1" && !is_chassis_resident("sw0p1") && flags.tunnel_rx == 1),
>> action=(outport <-> inport; next;)
>> + table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && eth.src == 00:00:00:00:00:02 && outport ==
>> "sw0p2" && !is_chassis_resident("sw0p2") && flags.tunnel_rx == 1),
>> action=(outport <-> inport; next;)
>> table=??(ls_in_check_port_sec), priority=50 , match=(1),
>> action=(reg0[[15]] = check_in_port_sec(); next;)
>> table=??(ls_in_l2_lkup ), priority=0 , match=(1),
>> action=(outport = get_fdb(eth.dst); next;)
>> table=??(ls_in_l2_lkup ), priority=110 , match=(eth.dst ==
>> $svc_monitor_mac && (tcp || icmp || icmp6)),
>> action=(handle_svc_check(inport);)
>> @@ -8560,7 +8562,9 @@ ovn_strip_lflows ], [0], [dnl
>> table=??(ls_in_apply_port_sec), priority=50 , match=(reg0[[15]]
>> == 1), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(eth.src[[40]]), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(vlan.present), action=(drop;)
>> - table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=105 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && eth.src == 00:00:00:00:00:01 && outport ==
>> "sw0p1" && !is_chassis_resident("sw0p1") && flags.tunnel_rx == 1),
>> action=(outport <-> inport; next;)
>> + table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && eth.src == 00:00:00:00:00:02 && outport ==
>> "sw0p2" && !is_chassis_resident("sw0p2") && flags.tunnel_rx == 1),
>> action=(outport <-> inport; next;)
>> table=??(ls_in_check_port_sec), priority=50 , match=(1),
>> action=(reg0[[15]] = check_in_port_sec(); next;)
>> table=??(ls_in_l2_lkup ), priority=0 , match=(1),
>> action=(outport = get_fdb(eth.dst); next;)
>> table=??(ls_in_l2_lkup ), priority=110 , match=(eth.dst ==
>> $svc_monitor_mac && (tcp || icmp || icmp6)),
>> action=(handle_svc_check(inport);)
>> @@ -8588,7 +8592,9 @@ ovn_strip_lflows ], [0], [dnl
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(eth.src[[40]]), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=100 , match=(inport ==
>> "sw0p1"), action=(reg0[[15]] = 1; next;)
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(vlan.present), action=(drop;)
>> - table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=105 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && eth.src == 00:00:00:00:00:01 && outport ==
>> "sw0p1" && !is_chassis_resident("sw0p1") && flags.tunnel_rx == 1),
>> action=(outport <-> inport; next;)
>> + table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && eth.src == 00:00:00:00:00:02 && outport ==
>> "sw0p2" && !is_chassis_resident("sw0p2") && flags.tunnel_rx == 1),
>> action=(outport <-> inport; next;)
>> table=??(ls_in_check_port_sec), priority=50 , match=(1),
>> action=(reg0[[15]] = check_in_port_sec(); next;)
>> table=??(ls_in_l2_lkup ), priority=0 , match=(1),
>> action=(outport = get_fdb(eth.dst); next;)
>> table=??(ls_in_l2_lkup ), priority=110 , match=(eth.dst ==
>> $svc_monitor_mac && (tcp || icmp || icmp6)),
>> action=(handle_svc_check(inport);)
>> @@ -8615,7 +8621,9 @@ ovn_strip_lflows ], [0], [dnl
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(eth.src[[40]]), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=100 , match=(inport ==
>> "sw0p1"), action=(reg0[[15]] = 1; next;)
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(vlan.present), action=(drop;)
>> - table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=105 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && eth.src == 00:00:00:00:00:01 && outport ==
>> "sw0p1" && !is_chassis_resident("sw0p1") && flags.tunnel_rx == 1),
>> action=(outport <-> inport; next;)
>> + table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && eth.src == 00:00:00:00:00:02 && outport ==
>> "sw0p2" && !is_chassis_resident("sw0p2") && flags.tunnel_rx == 1),
>> action=(outport <-> inport; next;)
>> table=??(ls_in_check_port_sec), priority=50 , match=(1),
>> action=(reg0[[15]] = check_in_port_sec(); next;)
>> table=??(ls_in_check_port_sec), priority=70 , match=(inport ==
>> "sw0p2"), action=(set_queue(10); reg0[[15]] = check_in_port_sec(); next;)
>> table=??(ls_in_l2_lkup ), priority=0 , match=(1),
>> action=(outport = get_fdb(eth.dst); next;)
>> @@ -8645,7 +8653,9 @@ ovn_strip_lflows ], [0], [dnl
>> table=??(ls_in_apply_port_sec), priority=50 , match=(reg0[[15]]
>> == 1), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(eth.src[[40]]), action=(drop;)
>> table=??(ls_in_check_port_sec), priority=100 ,
>> match=(vlan.present), action=(drop;)
>> - table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=105 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && flags.tunnel_rx == 1), action=(drop;)
>> + table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && eth.src == 00:00:00:00:00:01 && outport ==
>> "sw0p1" && !is_chassis_resident("sw0p1") && flags.tunnel_rx == 1),
>> action=(outport <-> inport; next;)
>> + table=??(ls_in_check_port_sec), priority=110 , match=(((ip4 &&
>> icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 &&
>> icmp6.code == 0)) && eth.src == 00:00:00:00:00:02 && outport ==
>> "sw0p2" && !is_chassis_resident("sw0p2") && flags.tunnel_rx == 1),
>> action=(outport <-> inport; next;)
>> table=??(ls_in_check_port_sec), priority=50 , match=(1),
>> action=(reg0[[15]] = check_in_port_sec(); next;)
>> table=??(ls_in_check_port_sec), priority=70 , match=(inport ==
>> "localnetport"), action=(set_queue(10); reg0[[15]] =
>> check_in_port_sec(); next;)
>> table=??(ls_in_check_port_sec), priority=70 , match=(inport ==
>> "sw0p1"), action=(reg0[[14]] = 1; next(pipeline=ingress, table=??);)
>
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