Acked-By: Ihar Hrachyshka <[email protected]> On Wed, Jul 20, 2022 at 4:50 AM Ales Musil <[email protected]> wrote: > > Add MAC binding aging mechanism, that utilizes > the timestamp column of MAC_Binding table. > When the MAC binding exceeds the threshold it is > removed from SB DB, this is postponed only in case > we receive update ARP with update to MAC address. > > The threshold is configurable via option > "mac_binding_age_threshold" that can be specified > for each logical router. The option is defaulting to > 0 which means that by default the aging is disabled > and the MAC binding rows will be persisted the same > way as before. > > Reported-at: https://bugzilla.redhat.com/2084668 > Signed-off-by: Ales Musil <[email protected]> > --- > v3: Rebase on top of current main. > Update according to the final conclusion. > --- > northd/automake.mk | 2 + > northd/inc-proc-northd.c | 13 ++++ > northd/mac-binding-aging.c | 151 +++++++++++++++++++++++++++++++++++++ > northd/mac-binding-aging.h | 33 ++++++++ > ovn-nb.xml | 7 ++ > 5 files changed, 206 insertions(+) > create mode 100644 northd/mac-binding-aging.c > create mode 100644 northd/mac-binding-aging.h > > diff --git a/northd/automake.mk b/northd/automake.mk > index 4862ec7b7..81582867d 100644 > --- a/northd/automake.mk > +++ b/northd/automake.mk > @@ -1,6 +1,8 @@ > # ovn-northd > bin_PROGRAMS += northd/ovn-northd > northd_ovn_northd_SOURCES = \ > + northd/mac-binding-aging.c \ > + northd/mac-binding-aging.h \ > northd/northd.c \ > northd/northd.h \ > northd/ovn-northd.c \ > diff --git a/northd/inc-proc-northd.c b/northd/inc-proc-northd.c > index 43093cb5a..4a3699106 100644 > --- a/northd/inc-proc-northd.c > +++ b/northd/inc-proc-northd.c > @@ -22,9 +22,11 @@ > #include "ip-mcast-index.h" > #include "static-mac-binding-index.h" > #include "lib/inc-proc-eng.h" > +#include "lib/mac-binding-index.h" > #include "lib/ovn-nb-idl.h" > #include "lib/ovn-sb-idl.h" > #include "mcast-group-index.h" > +#include "northd/mac-binding-aging.h" > #include "openvswitch/poll-loop.h" > #include "openvswitch/vlog.h" > #include "inc-proc-northd.h" > @@ -149,6 +151,8 @@ enum sb_engine_node { > * avoid sparse errors. */ > static ENGINE_NODE(northd, "northd"); > static ENGINE_NODE(lflow, "lflow"); > +static ENGINE_NODE(mac_binding_aging, "mac_binding_aging"); > +static ENGINE_NODE(mac_binding_aging_waker, "mac_binding_aging_waker"); > > void inc_proc_northd_init(struct ovsdb_idl_loop *nb, > struct ovsdb_idl_loop *sb) > @@ -211,12 +215,16 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb, > engine_add_input(&en_northd, &en_sb_load_balancer, NULL); > engine_add_input(&en_northd, &en_sb_fdb, NULL); > engine_add_input(&en_northd, &en_sb_static_mac_binding, NULL); > + engine_add_input(&en_mac_binding_aging, &en_sb_mac_binding, NULL); > + engine_add_input(&en_mac_binding_aging, &en_northd, NULL); > + engine_add_input(&en_mac_binding_aging, &en_mac_binding_aging_waker, > NULL); > engine_add_input(&en_lflow, &en_nb_bfd, NULL); > engine_add_input(&en_lflow, &en_sb_bfd, NULL); > engine_add_input(&en_lflow, &en_sb_logical_flow, NULL); > engine_add_input(&en_lflow, &en_sb_multicast_group, NULL); > engine_add_input(&en_lflow, &en_sb_igmp_group, NULL); > engine_add_input(&en_lflow, &en_northd, NULL); > + engine_add_input(&en_lflow, &en_mac_binding_aging, NULL); > > struct engine_arg engine_arg = { > .nb_idl = nb->idl, > @@ -235,6 +243,8 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb, > chassis_hostname_index_create(sb->idl); > struct ovsdb_idl_index *sbrec_static_mac_binding_by_lport_ip > = static_mac_binding_index_create(sb->idl); > + struct ovsdb_idl_index *sbrec_mac_binding_by_datapath > + = mac_binding_by_datapath_index_create(sb->idl); > > engine_init(&en_lflow, &engine_arg); > > @@ -256,6 +266,9 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb, > engine_ovsdb_node_add_index(&en_sb_static_mac_binding, > "sbrec_static_mac_binding_by_lport_ip", > sbrec_static_mac_binding_by_lport_ip); > + engine_ovsdb_node_add_index(&en_sb_mac_binding, > + "sbrec_mac_binding_by_datapath", > + sbrec_mac_binding_by_datapath); > } > > void inc_proc_northd_run(struct ovsdb_idl_txn *ovnnb_txn, > diff --git a/northd/mac-binding-aging.c b/northd/mac-binding-aging.c > new file mode 100644 > index 000000000..8af477ff1 > --- /dev/null > +++ b/northd/mac-binding-aging.c > @@ -0,0 +1,151 @@ > +/* Copyright (c) 2022, Red Hat, Inc. > + * > + * Licensed under the Apache License, Version 2.0 (the "License"); > + * you may not use this file except in compliance with the License. > + * You may obtain a copy of the License at: > + * > + * http://www.apache.org/licenses/LICENSE-2.0 > + * > + * Unless required by applicable law or agreed to in writing, software > + * distributed under the License is distributed on an "AS IS" BASIS, > + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. > + * See the License for the specific language governing permissions and > + * limitations under the License. > + */ > + > +#include <config.h> > + > +#include "lib/inc-proc-eng.h" > +#include "lib/ovn-nb-idl.h" > +#include "lib/ovn-sb-idl.h" > +#include "lib/timeval.h" > +#include "northd/mac-binding-aging.h" > +#include "northd/northd.h" > +#include "openvswitch/hmap.h" > +#include "openvswitch/poll-loop.h" > +#include "openvswitch/util.h" > +#include "openvswitch/vlog.h" > + > +VLOG_DEFINE_THIS_MODULE(mac_binding_aging); > + > +struct mac_binding_waker { > + bool should_schedule; > + long long next_wake_msec; > +}; > + > +static struct mac_binding_waker waker; > + > +static void > +mac_binding_aging_run_for_datapath(const struct sbrec_datapath_binding *dp, > + const struct nbrec_logical_router *nbr, > + struct ovsdb_idl_index *mb_by_datapath, > + int64_t now, int64_t *wake_delay) > +{ > + uint64_t threshold = smap_get_uint(&nbr->options, > + "mac_binding_age_threshold", > + 0) * 1000; > + if (!threshold) { > + return; > + } > + > + struct sbrec_mac_binding *mb_index_row = > + sbrec_mac_binding_index_init_row(mb_by_datapath); > + sbrec_mac_binding_index_set_datapath(mb_index_row, dp); > + > + const struct sbrec_mac_binding *mb; > + SBREC_MAC_BINDING_FOR_EACH_EQUAL (mb, mb_index_row, mb_by_datapath) { > + int64_t elapsed = now - mb->timestamp; > + > + if (elapsed < 0) { > + return; > + } else if (elapsed >= threshold) { > + sbrec_mac_binding_delete(mb); > + } else { > + *wake_delay = MIN(*wake_delay, threshold - elapsed); > + } > + } > + sbrec_mac_binding_index_destroy_row(mb_index_row); > +} > + > +void > +en_mac_binding_aging_run(struct engine_node *node, void *data OVS_UNUSED) > +{ > + const struct engine_context *eng_ctx = engine_get_context(); > + > + if (!eng_ctx->ovnsb_idl_txn) { > + return; > + } > + > + int64_t next_expire_msec = INT64_MAX; > + int64_t now = time_wall_msec(); > + struct northd_data *northd_data = engine_get_input_data("northd", node); > + struct ovsdb_idl_index *sbrec_mac_binding_by_datapath = > + engine_ovsdb_node_get_index(engine_get_input("SB_mac_binding", node), > + "sbrec_mac_binding_by_datapath"); > + > + struct ovn_datapath *od; > + HMAP_FOR_EACH (od, key_node, &northd_data->datapaths) { > + if (od->sb && od->nbr) { > + mac_binding_aging_run_for_datapath(od->sb, od->nbr, > + sbrec_mac_binding_by_datapath, > + now, &next_expire_msec); > + } > + } > + > + if (next_expire_msec < INT64_MAX) { > + waker.should_schedule = true; > + waker.next_wake_msec = time_msec() + next_expire_msec; > + /* Run the engine right after so the waker can reflect on the new > wake > + * time. */ > + poll_immediate_wake(); > + } else { > + waker.should_schedule = false; > + } > + > + /* This node is part of lflow, but lflow does not depend on it. Setting > + * state as unchanged does not trigger lflow node when it is not needed. > */ > + engine_set_node_state(node, EN_UNCHANGED); > +} > + > +void * > +en_mac_binding_aging_init(struct engine_node *node OVS_UNUSED, > + struct engine_arg *arg OVS_UNUSED) > +{ > + return NULL; > +} > + > +void > +en_mac_binding_aging_cleanup(void *data OVS_UNUSED) > +{ > +} > + > +void > +en_mac_binding_aging_waker_run(struct engine_node *node, void *data > OVS_UNUSED) > +{ > + if (!waker.should_schedule) { > + return; > + } > + > + if (time_msec() >= waker.next_wake_msec) { > + waker.should_schedule = false; > + engine_set_node_state(node, EN_UPDATED); > + return; > + } > + > + engine_set_node_state(node, EN_UNCHANGED); > + poll_timer_wait_until(waker.next_wake_msec); > +} > + > +void * > +en_mac_binding_aging_waker_init(struct engine_node *node OVS_UNUSED, > + struct engine_arg *arg OVS_UNUSED) > +{ > + waker.should_schedule = false; > + waker.next_wake_msec = 0; > + return NULL; > +} > + > +void > +en_mac_binding_aging_waker_cleanup(void *data OVS_UNUSED) > +{ > +} > diff --git a/northd/mac-binding-aging.h b/northd/mac-binding-aging.h > new file mode 100644 > index 000000000..296a7ab38 > --- /dev/null > +++ b/northd/mac-binding-aging.h > @@ -0,0 +1,33 @@ > +/* Copyright (c) 2022, Red Hat, Inc. > + * > + * Licensed under the Apache License, Version 2.0 (the "License"); > + * you may not use this file except in compliance with the License. > + * You may obtain a copy of the License at: > + * > + * http://www.apache.org/licenses/LICENSE-2.0 > + * > + * Unless required by applicable law or agreed to in writing, software > + * distributed under the License is distributed on an "AS IS" BASIS, > + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. > + * See the License for the specific language governing permissions and > + * limitations under the License. > + */ > + > +#ifndef MAC_BINDING_AGING_H > +#define MAC_BINDING_AGING_H 1 > + > +#include "lib/inc-proc-eng.h" > + > +/* The MAC binding aging node functions. */ > +void en_mac_binding_aging_run(struct engine_node *node, void *data); > +void *en_mac_binding_aging_init(struct engine_node *node, > + struct engine_arg *arg); > +void en_mac_binding_aging_cleanup(void *data); > + > +/* The MAC binding aging waker node functions. */ > +void en_mac_binding_aging_waker_run(struct engine_node *node, void *data); > +void *en_mac_binding_aging_waker_init(struct engine_node *node, > + struct engine_arg *arg); > +void en_mac_binding_aging_waker_cleanup(void *data); > + > +#endif /* northd/mac-binding-aging.h */ > diff --git a/ovn-nb.xml b/ovn-nb.xml > index e26afd83c..d3fba9bdc 100644 > --- a/ovn-nb.xml > +++ b/ovn-nb.xml > @@ -2392,6 +2392,13 @@ > and other sources. This way, OVN and the other sources can make use > of > the same conntrack zone. > </column> > + > + <column name="options" key="mac_binding_age_threshold" > + type='{"type": "integer", "minInteger": 0, "maxInteger": > 4294967295}'> > + MAC binding aging <code>threshold</code> value in secs. MAC binding > + exceeding this timeout will be automatically removed. The value > + defaults to 0, which means disabled. > + </column> > </group> > > <group title="Common Columns"> > -- > 2.35.3 > > _______________________________________________ > dev mailing list > [email protected] > https://mail.openvswitch.org/mailman/listinfo/ovs-dev >
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