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Revert "controller: Properly handle localnet flows in I+P.".
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This reverts commit edc064b.

In setups with multiple localnet ports w/o vlans (or multiple localnet
ports with the same vlans), that patch was trying to create the same
flows with action conjunction multiple times, which caused the following
assert:
0  0x00007ffff77cd834 in __pthread_kill_implementation () from /lib64/libc.so.6
1  0x00007ffff777b8ee in raise () from /lib64/libc.so.6
2  0x00007ffff77638ff in abort () from /lib64/libc.so.6
3  0x000000000042f861 in flow_is_preferred (a=0xafe9a0, b=0xaf9380) at controller/ofctrl.c:966
4  0x000000000042f340 in link_installed_to_desired (i=0xb2eaf0, d=0xafe9a0) at controller/ofctrl.c:987
5  0x000000000042c17c in update_installed_flows_by_track (flow_table=0x813a80, bc=0x7ffffffcc740, installed_flows=0x7894e0 <installed_pflows>, msgs=0x7ffffffcc790) at controller/ofctrl.c:2583
6  0x000000000042af14 in ofctrl_put (lflow_table=0x810180, pflow_table=0x813a80, pending_ct_zones=0x8129b0, pending_lb_tuples=0x80e030, sbrec_meter_by_name=0x7e6840, req_cfg=0, lflows_changed=true, pflows_changed=true) at controller/ofctrl.c:2826
7  0x000000000045015c in main (argc=1, argv=0x7fffffffe218) at controller/ovn-controller.c:5788

Reverting that patch means that flows such as
  table_id=0, priority=180, vlan_tci=0x0000/0x1000, actions=conjunction(100,2/2)
remains after the localnet port is deleted.

Fixes: edc064b ("controller: Properly handle localnet flows in I+P.")
Reported-at: https://issues.redhat.com/browse/FDP-926

Signed-off-by: Xavier Simonart <[email protected]>
Signed-off-by: Dumitru Ceara <[email protected]>
(cherry picked from commit d276728)
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@simonartxavier @dceara
simonartxavier authored and dceara committed Nov 5, 2024
1 parent ed9b0cf commit c5d851b
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Showing 2 changed files with 45 additions and 44 deletions.
9 changes: 4 additions & 5 deletions controller/physical.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -698,7 +698,7 @@ put_replace_chassis_mac_flows(const struct simap *ct_zones,
put_resubmit(OFTABLE_LOG_INGRESS_PIPELINE, ofpacts_p);
ofctrl_add_flow(flow_table, OFTABLE_PHY_TO_LOG, 180,
rport_binding->header_.uuid.parts[0],
&match, ofpacts_p, &localnet_port->header_.uuid);
&match, ofpacts_p, hc_uuid);

/* Provide second search criteria, i.e localnet port's
* vlan ID for conjunction flow */
Expand All @@ -718,7 +718,7 @@ put_replace_chassis_mac_flows(const struct simap *ct_zones,
conj->clause = 1;
ofctrl_add_flow(flow_table, OFTABLE_PHY_TO_LOG, 180,
rport_binding->header_.uuid.parts[0],
&match, ofpacts_p, &localnet_port->header_.uuid);
&match, ofpacts_p, hc_uuid);
}
}

Expand Down Expand Up @@ -2362,9 +2362,8 @@ physical_handle_flows_for_lport(const struct sbrec_port_binding *pb,
struct local_datapath *ldp =
get_local_datapath(p_ctx->local_datapaths,
pb->datapath->tunnel_key);
if (!strcmp(pb->type, "external") ||
!strcmp(pb->type, "patch") || !strcmp(pb->type, "l3gateway")) {
/* Those lports have a dependency on the localnet port.
if (!strcmp(pb->type, "external")) {
/* External lports have a dependency on the localnet port.
* We need to remove the flows of the localnet port as well
* and re-consider adding the flows for it.
*/
Expand Down
80 changes: 41 additions & 39 deletions tests/ovn.at
View file
Original file line number Diff line number Diff line change
Expand Up @@ -38438,58 +38438,60 @@ AT_CLEANUP
])

OVN_FOR_EACH_NORTHD([
AT_SETUP([localnet port flows after deletion])
AT_SETUP([Multiple localnet ports without vlans])
AT_KEYWORDS([localnet])

ovn_start

net_add n1
sim_add hv1
ovs-vsctl add-br br-phys
ovn_attach n1 br-phys 192.168.0.1
ovs-vsctl set Open_vSwitch . external-ids:ovn-bridge-mappings=phys:br-phys

check ovn-nbctl ls-add sw0
check ovn-nbctl lr-add lr1
check ovn-nbctl lrp-add lr1 lr1-ls1 00:00:01:ff:02:03 192.168.1.254/24

for i in 1 2; do
check ovn-nbctl lsp-add sw0 sw0-p${i} -- lsp-set-addresses sw0-p${i} "00:00:10:01:02:0${i} 10.0.0.${i}"
sim_add hv${i}
as hv${i}
ovs-vsctl add-br br-phys
ovn_attach n1 br-phys 192.168.0.${i}
ovs-vsctl set open . external_ids:ovn-bridge-mappings=physnet1:br-phys
ovs-vsctl add-port br-int vif${i} -- \
set Interface vif${i} external-ids:iface-id=sw0-p${i} \
options:tx_pcap=hv${i}/vif${i}-tx.pcap \
options:rxq_pcap=hv${i}/vif${i}-rx.pcap
done
check ovn-nbctl ls-add ls1
check ovn-nbctl lsp-add ls1 ls1-lr1
check ovn-nbctl lsp-set-type ls1-lr1 router
check ovn-nbctl lsp-set-options ls1-lr1 router-port=lr1-ls1
check ovn-nbctl lsp-set-addresses ls1-lr1 router

check ovn-nbctl lr-add lr0
check ovn-nbctl lrp-add lr0 lr0-sw0 00:00:00:00:ff:01 10.0.0.254/24
check ovn-nbctl lsp-add sw0 sw0-lr0
check ovn-nbctl lsp-set-type sw0-lr0 router
check ovn-nbctl lsp-set-addresses sw0-lr0 router
check ovn-nbctl lsp-set-options sw0-lr0 router-port=lr0-sw0
check ovn-nbctl ls-add pub
check ovn-nbctl lsp-add pub pub-lr1
check ovn-nbctl lsp-set-type pub-lr1 router
check ovn-nbctl lsp-set-options pub-lr1 router-port=lr1-pub
check ovn-nbctl lsp-set-addresses pub-lr1 router

check ovn-nbctl lrp-add lr1 lr1-pub 00:00:01:ff:01:03 172.16.1.254/24
check ovn-nbctl lrp-set-gateway-chassis lr1-pub hv1

check ovn-nbctl --wait=hv sync
wait_for_ports_up

# We should not have any flows in table OFTABLE_PHY_TO_LOG from in_port different from vif1 and ovn-hv2-0
OVN_WAIT_REMOTE_INPUT_FLOWS(["hv1"],["hv2"])
of1=$(as hv1 ovs-vsctl --bare --columns ofport find Interface name=vif1)
of2=$(as hv1 ovs-vsctl --bare --columns ofport find Interface name=ovn-hv2-0)
AT_CHECK([as hv1 ovs-ofctl dump-flows br-int table=0 | grep -v NXST_FLOW | grep "in_port=" | grep -v "in_port=$of1" | grep -v "in_port=$of2" | wc -l], [0], [dnl
0
])

# Add localnet port to sw0
check ovn-nbctl lsp-add sw0 ln-sw0 -- lsp-set-addresses ln-sw0 unknown -- lsp-set-type ln-sw0 localnet
check ovn-nbctl --wait=hv lsp-set-options ln-sw0 network_name=physnet1 -- set logical_switch_port ln-sw0 tag_request=100
check ovn-nbctl -- lsp-add pub pub-ln -- lsp-set-type pub-ln localnet -- lsp-set-addresses pub-ln unknown -- lsp-set-options pub-ln network_name=phys
check ovn-nbctl -- lsp-add ls1 ls1-ln -- lsp-set-type ls1-ln localnet -- lsp-set-addresses ls1-ln unknown -- lsp-set-options ls1-ln network_name=phys

OVN_WAIT_PATCH_PORT_FLOWS(["ln-sw0"], ["hv1"])
AT_CHECK([as hv1 ovs-ofctl dump-flows br-int table=0 | grep -v NXST_FLOW | grep "in_port=" | grep -v "in_port=$of1" | grep -v "in_port=$of2" | wc -l], [0], [dnl
2
# Wait for ofports.
OVS_WAIT_UNTIL([
pub_ln_ofport=$(as hv1 ovs-vsctl --bare --columns ofport find Interface name=patch-br-int-to-pub-ln)
test -n "$pub_ln_ofport" && test 1 -le $pub_ln_ofport
])

# Remove localnet port from sw0. Peer-ports flows should be deleted.
check ovn-nbctl --wait=hv lsp-del ln-sw0
AT_CHECK([as hv1 ovs-ofctl dump-flows br-int table=0 | grep -v NXST_FLOW | grep "in_port=" | grep -v "in_port=$of1" | grep -v "in_port=$of2" | wc -l], [0], [dnl
0
OVS_WAIT_UNTIL([
ls1_ln_ofport=$(as hv1 ovs-vsctl --bare --columns ofport find Interface name=patch-br-int-to-ls1-ln)
test -n "$ls1_ln_ofport" && test 1 -le $ls1_ln_ofport
])

OVN_CLEANUP([hv1],[hv2])
pub_lr1_cookie=$(ovn-sbctl --bare --columns _uuid list port_binding lr1-pub | awk -F '-' '{print $1}')
ls1_lr1_cookie=$(ovn-sbctl --bare --columns _uuid list port_binding lr1-ls1 | awk -F '-' '{print $1}')

# Expect to receive one flow matching on conjunction id (replacing source mac with router port mac)
OVS_WAIT_UNTIL([test "X1" = "X$(ovs-ofctl dump-flows br-int cookie=0x${ls1_lr1_cookie}/-1 | grep "conj_id=100" | grep in_port=$ls1_ln_ofport | wc -l)"])
OVS_WAIT_UNTIL([test "X1" = "X$(ovs-ofctl dump-flows br-int cookie=0x${pub_lr1_cookie}/-1 | grep "conj_id=100" | grep in_port=$pub_ln_ofport | wc -l)"])

OVN_CLEANUP([hv1])

AT_CLEANUP
])

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