On 2/8/25 12:50 PM, Frode Nordahl wrote:
> tor. 6. feb. 2025, 11:34 skrev Felix Huettner <[email protected]
>> :
> 
>> On Thu, Feb 06, 2025 at 10:48:43AM +0100, Frode Nordahl wrote:
>>> On Thu, Feb 6, 2025 at 12:24 AM Lorenzo Bianconi
>>> <[email protected]> wrote:
>>>>
>>>>> For each vrf we use we open a netlink watcher.
>>>>> This allows us to reconcile on changed route entries from outside
>>>>> routing agents.
>>>>>
>>>>> Signed-off-by: Felix Huettner <[email protected]>
>>>>
>>>> Hi Felix,
>>>>
>>>> the patch seems fine to me.
>>>> Acked-by: Lorenzo Bianconi <[email protected]>
>>>>
>>>> Regards,
>>>> Lorenzo
>>>
>>> Thanks for the patch!
>>
>> Hi Frode,
>>
>> thanks for the patch.
>>
>>>
>>> I have a variable name change request and a request for a TODO (if you
>>> agree) below.
>>
>> I'll change it.
>>
>>>
>>> In the interest of time we can keep the current implementation, as I
>>> don't expect anyone to add thousands of routers with dynamic-routing
>>> on them, it will rather be aggregated in a few. However, I don't
>>> understand why you need a watcher per VRF. Why not filter and route
>>> the changes to their appropriate destinations in the callback function
>>> that you provide? Please add this as a TODO if you agree.
>>
>> I'll answer on the next mail.
>>
> 
> A gentle reminder on this item, did not see it answered nor added to the
> TODO.
> 

When I suggested the incremental change here:

https://mail.openvswitch.org/pipermail/ovs-dev/2025-February/420676.html

https://github.com/dceara/ovn/commit/5be1e32024f092d1ff2092f5c1f7c1dd6bc1b250

I had exactly this in mind.  Essentially, register a single callback for
all tables.  Routing updates to the right table could happen as a follow
up when we add incremental processing.

Did I misunderstand your comment, Frode?

Regards,
Dumitru

> --
> Frode Nordahl
> 
>>
>>> With those addressed:
>>> Acked-by: Frode Nordahl <[email protected]>
>>
>> Thanks a lot,
>> Felix
>>
>>>
>>>>
>>>>> ---
>>>>> v5->v6:
>>>>>   * addressed review comments
>>>>>
>>>>>  controller/automake.mk               |   7 +-
>>>>>  controller/ovn-controller.c          |  51 ++++++-
>>>>>  controller/route-exchange.c          |   6 +-
>>>>>  controller/route-exchange.h          |   3 +
>>>>>  controller/route-table-notify-stub.c |  56 ++++++++
>>>>>  controller/route-table-notify.c      | 198
>> +++++++++++++++++++++++++++
>>>>>  controller/route-table-notify.h      |  44 ++++++
>>>>>  tests/system-ovn.at                  |   4 -
>>>>>  8 files changed, 360 insertions(+), 9 deletions(-)
>>>>>  create mode 100644 controller/route-table-notify-stub.c
>>>>>  create mode 100644 controller/route-table-notify.c
>>>>>  create mode 100644 controller/route-table-notify.h
>>>>>
>>>>> diff --git a/controller/automake.mk b/controller/automake.mk
>>>>> index fa3083d2d..c789c313c 100644
>>>>> --- a/controller/automake.mk
>>>>> +++ b/controller/automake.mk
>>>>> @@ -55,6 +55,7 @@ controller_ovn_controller_SOURCES = \
>>>>>       controller/ecmp-next-hop-monitor.h \
>>>>>       controller/ecmp-next-hop-monitor.c \
>>>>>       controller/route-exchange.h \
>>>>> +     controller/route-table-notify.h \
>>>>>       controller/route.h \
>>>>>       controller/route.c
>>>>>
>>>>> @@ -62,10 +63,12 @@ if HAVE_NETLINK
>>>>>  controller_ovn_controller_SOURCES += \
>>>>>       controller/route-exchange-netlink.h \
>>>>>       controller/route-exchange-netlink.c \
>>>>> -     controller/route-exchange.c
>>>>> +     controller/route-exchange.c \
>>>>> +     controller/route-table-notify.c
>>>>>  else
>>>>>  controller_ovn_controller_SOURCES += \
>>>>> -     controller/route-exchange-stub.c
>>>>> +     controller/route-exchange-stub.c \
>>>>> +     controller/route-table-notify-stub.c
>>>>>  endif
>>>>>
>>>>>  controller_ovn_controller_LDADD = lib/libovn.la $(OVS_LIBDIR)/
>> libopenvswitch.la
>>>>> diff --git a/controller/ovn-controller.c
>> b/controller/ovn-controller.c
>>>>> index 5d54fc04d..e819733e9 100644
>>>>> --- a/controller/ovn-controller.c
>>>>> +++ b/controller/ovn-controller.c
>>>>> @@ -90,6 +90,7 @@
>>>>>  #include "ovn-dns.h"
>>>>>  #include "route.h"
>>>>>  #include "route-exchange.h"
>>>>> +#include "route-table-notify.h"
>>>>>
>>>>>  VLOG_DEFINE_THIS_MODULE(main);
>>>>>
>>>>> @@ -5205,10 +5206,16 @@ en_route_exchange_run(struct engine_node
>> *node, void *data)
>>>>>          .sbrec_port_binding_by_name = sbrec_port_binding_by_name,
>>>>>          .announce_routes = &route_data->announce_routes,
>>>>>      };
>>>>> -    struct route_exchange_ctx_out r_ctx_out = {
>>>>> -    };
>>>>> +    struct route_exchange_ctx_out r_ctx_out = {};
>>>>> +
>>>>> +    hmap_init(&r_ctx_out.route_table_watches);
>>>>>
>>>>>      route_exchange_run(&r_ctx_in, &r_ctx_out);
>>>>> +
>> route_table_notify_update_watches(&r_ctx_out.route_table_watches);
>>>>> +
>>>>> +
>> route_table_watch_request_cleanup(&r_ctx_out.route_table_watches);
>>>>> +    hmap_destroy(&r_ctx_out.route_table_watches);
>>>>> +
>>>>>      engine_set_node_state(node, EN_UPDATED);
>>>>>  }
>>>>>
>>>>> @@ -5226,6 +5233,38 @@ static void
>>>>>  en_route_exchange_cleanup(void *data OVS_UNUSED)
>>>>>  {}
>>>>>
>>>>> +struct ed_type_route_table_notify {
>>>>> +    /* For incremental processing this could be tracked per
>> datapath in
>>>>> +     * the future. */
>>>>> +    bool changed;
>>>>> +};
>>>>> +
>>>>> +static void
>>>>> +en_route_table_notify_run(struct engine_node *node, void *data)
>>>>> +{
>>>>> +    struct ed_type_route_table_notify *rtn = data;
>>>>> +    if (rtn->changed) {
>>>>> +        engine_set_node_state(node, EN_UPDATED);
>>>>> +    } else {
>>>>> +        engine_set_node_state(node, EN_UNCHANGED);
>>>>> +    }
>>>>> +    rtn->changed = false;
>>>>> +}
>>>>> +
>>>>> +
>>>>> +static void *
>>>>> +en_route_table_notify_init(struct engine_node *node OVS_UNUSED,
>>>>> +                       struct engine_arg *arg OVS_UNUSED)
>>>>> +{
>>>>> +    struct ed_type_route_table_notify *rtn = xzalloc(sizeof *rtn);
>>>>> +    rtn->changed = true;
>>>>> +    return rtn;
>>>>> +}
>>>>> +
>>>>> +static void
>>>>> +en_route_table_notify_cleanup(void *data OVS_UNUSED)
>>>>> +{}
>>>>> +
>>>>>  /* Returns false if the northd internal version stored in SB_Global
>>>>>   * and ovn-controller internal version don't match.
>>>>>   */
>>>>> @@ -5525,6 +5564,7 @@ main(int argc, char *argv[])
>>>>>      ENGINE_NODE(bfd_chassis, "bfd_chassis");
>>>>>      ENGINE_NODE(dns_cache, "dns_cache");
>>>>>      ENGINE_NODE(route, "route");
>>>>> +    ENGINE_NODE(route_table_notify, "route_table_notify");
>>>>>      ENGINE_NODE(route_exchange, "route_exchange");
>>>>>
>>>>>  #define SB_NODE(NAME, NAME_STR) ENGINE_NODE_SB(NAME, NAME_STR);
>>>>> @@ -5562,6 +5602,7 @@ main(int argc, char *argv[])
>>>>>                       engine_noop_handler);
>>>>>      engine_add_input(&en_route_exchange, &en_sb_port_binding,
>>>>>                       engine_noop_handler);
>>>>> +    engine_add_input(&en_route_exchange, &en_route_table_notify,
>> NULL);
>>>>>
>>>>>      engine_add_input(&en_addr_sets, &en_sb_address_set,
>>>>>                       addr_sets_sb_address_set_handler);
>>>>> @@ -6080,6 +6121,10 @@ main(int argc, char *argv[])
>>>>>                                 &transport_zones,
>>>>>                                 bridge_table);
>>>>>
>>>>> +                    struct ed_type_route_table_notify *rtn =
>>>>> +
>> engine_get_internal_data(&en_route_table_notify);
>>>>> +                    rtn->changed = route_table_notify_run();
>>>>> +
>>>>>                      stopwatch_start(CONTROLLER_LOOP_STOPWATCH_NAME,
>>>>>                                      time_msec());
>>>>>
>>>>> @@ -6362,6 +6407,7 @@ main(int argc, char *argv[])
>>>>>              }
>>>>>
>>>>>              binding_wait();
>>>>> +            route_table_notify_wait();
>>>>>          }
>>>>>
>>>>>          unixctl_server_run(unixctl);
>>>>> @@ -6516,6 +6562,7 @@ loop_done:
>>>>>      ovsrcu_exit();
>>>>>      dns_resolve_destroy();
>>>>>      route_exchange_destroy();
>>>>> +    route_table_notify_destroy();
>>>>>
>>>>>      exit(retval);
>>>>>  }
>>>>> diff --git a/controller/route-exchange.c
>> b/controller/route-exchange.c
>>>>> index a1976234b..89d07eeb7 100644
>>>>> --- a/controller/route-exchange.c
>>>>> +++ b/controller/route-exchange.c
>>>>> @@ -29,6 +29,7 @@
>>>>>  #include "ha-chassis.h"
>>>>>  #include "local_data.h"
>>>>>  #include "route.h"
>>>>> +#include "route-table-notify.h"
>>>>>  #include "route-exchange.h"
>>>>>  #include "route-exchange-netlink.h"
>>>>>
>>>>> @@ -167,7 +168,7 @@ sb_sync_learned_routes(const struct ovs_list
>> *learned_routes,
>>>>>
>>>>>  void
>>>>>  route_exchange_run(struct route_exchange_ctx_in *r_ctx_in,
>>>>> -                   struct route_exchange_ctx_out *r_ctx_out
>> OVS_UNUSED)
>>>>> +                   struct route_exchange_ctx_out *r_ctx_out)
>>>>>  {
>>>>>      struct sset old_maintained_vrfs =
>> SSET_INITIALIZER(&old_maintained_vrfs);
>>>>>      sset_swap(&_maintained_vrfs, &old_maintained_vrfs);
>>>>> @@ -209,6 +210,9 @@ route_exchange_run(struct route_exchange_ctx_in
>> *r_ctx_in,
>>>>>                                 r_ctx_in->sbrec_port_binding_by_name,
>>>>>
>>  r_ctx_in->sbrec_learned_route_by_datapath);
>>>>>
>>>>> +        route_table_add_watch_request(
>>>>> +            &r_ctx_out->route_table_watches, table_id);
>>>>> +
>>>>>          re_nl_learned_routes_destroy(&received_routes);
>>>>>      }
>>>>>
>>>>> diff --git a/controller/route-exchange.h
>> b/controller/route-exchange.h
>>>>> index 66d8f3945..1e1a09da3 100644
>>>>> --- a/controller/route-exchange.h
>>>>> +++ b/controller/route-exchange.h
>>>>> @@ -18,6 +18,8 @@
>>>>>  #ifndef ROUTE_EXCHANGE_H
>>>>>  #define ROUTE_EXCHANGE_H 1
>>>>>
>>>>> +#include "openvswitch/hmap.h"
>>>>> +
>>>>>  struct route_exchange_ctx_in {
>>>>>      struct ovsdb_idl_txn *ovnsb_idl_txn;
>>>>>      struct ovsdb_idl_index *sbrec_port_binding_by_name;
>>>>> @@ -27,6 +29,7 @@ struct route_exchange_ctx_in {
>>>>>  };
>>>>>
>>>>>  struct route_exchange_ctx_out {
>>>>> +    struct hmap route_table_watches;
>>>>>  };
>>>>>
>>>>>  void route_exchange_run(struct route_exchange_ctx_in *,
>>>>> diff --git a/controller/route-table-notify-stub.c
>> b/controller/route-table-notify-stub.c
>>>>> new file mode 100644
>>>>> index 000000000..f58897f03
>>>>> --- /dev/null
>>>>> +++ b/controller/route-table-notify-stub.c
>>>>> @@ -0,0 +1,56 @@
>>>>> +/*
>>>>> + * Copyright (c) 2025, STACKIT GmbH & Co. KG
>>>>> + *
>>>>> + * 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 <stdbool.h>
>>>>> +
>>>>> +#include "openvswitch/compiler.h"
>>>>> +#include "route-table-notify.h"
>>>>> +
>>>>> +bool
>>>>> +route_table_notify_run(void)
>>>>> +{
>>>>> +    return false;
>>>>> +}
>>>>> +
>>>>> +void
>>>>> +route_table_notify_wait(void)
>>>>> +{
>>>>> +}
>>>>> +
>>>>> +void
>>>>> +route_table_add_watch_request(struct hmap *route_table_watches
>> OVS_UNUSED,
>>>>> +                              uint32_t table_id OVS_UNUSED)
>>>>> +{
>>>>> +}
>>>>> +
>>>>> +void
>>>>> +route_table_watch_request_cleanup(struct hmap *route_table_watches
>> OVS_UNUSED)
>>>>> +{
>>>>> +}
>>>>> +
>>>>> +void
>>>>> +route_table_notify_update_watches(
>>>>> +    const struct hmap *route_table_watches OVS_UNUSED)
>>>>> +{
>>>>> +}
>>>>> +
>>>>> +void
>>>>> +route_table_notify_destroy(void)
>>>>> +{
>>>>> +}
>>>>> +
>>>>> diff --git a/controller/route-table-notify.c
>> b/controller/route-table-notify.c
>>>>> new file mode 100644
>>>>> index 000000000..b79f50eba
>>>>> --- /dev/null
>>>>> +++ b/controller/route-table-notify.c
>>>>> @@ -0,0 +1,198 @@
>>>>> +/*
>>>>> + * Copyright (c) 2025, STACKIT GmbH & Co. KG
>>>>> + *
>>>>> + * 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 <net/if.h>
>>>>> +#include <linux/rtnetlink.h>
>>>>> +
>>>>> +#include "netlink-notifier.h"
>>>>> +#include "openvswitch/vlog.h"
>>>>> +
>>>>> +#include "binding.h"
>>>>> +#include "hash.h"
>>>>> +#include "hmapx.h"
>>>>> +#include "route-table.h"
>>>>> +#include "route.h"
>>>>> +#include "route-table-notify.h"
>>>>> +#include "route-exchange-netlink.h"
>>>>> +
>>>>> +VLOG_DEFINE_THIS_MODULE(route_table_notify);
>>>>> +
>>>>> +struct route_table_watch_request {
>>>>> +    struct hmap_node node;
>>>>> +    uint32_t table_id;
>>>>> +};
>>>>> +
>>>>> +struct route_table_watch_entry {
>>>>> +    struct hmap_node node;
>>>>> +    uint32_t table_id;
>>>>> +    struct nln *nln;
>>>>> +    struct nln_notifier *route_notifier;
>>>>> +    struct nln_notifier *route6_notifier;
>>>>> +};
>>>>> +
>>>>> +static struct hmap watches = HMAP_INITIALIZER(&watches);
>>>>> +static bool any_route_table_changed;
>>>>> +static struct route_table_msg rtmsg;
>>>
>>> nit: As highlighted in
>>>
>> https://github.com/openvswitch/ovs/commit/910bc81e66ba98487469efb95997788d91c2853f
>> ,
>>> the above variable name can be very confusing. Would you consider a
>>> different name for it?
>>>
>>> --
>>> Frode Nordahl
>>>
>>>>> +
>>>>> +static uint32_t
>>>>> +route_table_notify_hash_watch(uint32_t table_id)
>>>>> +{
>>>>> +    return hash_add(0, table_id);
>>>>> +}
>>>>> +
>>>>> +void
>>>>> +route_table_add_watch_request(struct hmap *route_table_watches,
>>>>> +                              uint32_t table_id)
>>>>> +{
>>>>> +    struct route_table_watch_request *wr = xzalloc(sizeof *wr);
>>>>> +    wr->table_id = table_id;
>>>>> +    hmap_insert(route_table_watches, &wr->node,
>>>>> +                route_table_notify_hash_watch(wr->table_id));
>>>>> +}
>>>>> +
>>>>> +void
>>>>> +route_table_watch_request_cleanup(struct hmap *route_table_watches)
>>>>> +{
>>>>> +    struct route_table_watch_request *wr;
>>>>> +    HMAP_FOR_EACH_POP (wr, node, route_table_watches) {
>>>>> +        free(wr);
>>>>> +    }
>>>>> +}
>>>>> +
>>>>> +static struct route_table_watch_entry *
>>>>> +find_watch_entry(uint32_t table_id)
>>>>> +{
>>>>> +    struct route_table_watch_entry *we;
>>>>> +    uint32_t hash = route_table_notify_hash_watch(table_id);
>>>>> +    HMAP_FOR_EACH_WITH_HASH (we, node, hash, &watches) {
>>>>> +        if (table_id == we->table_id) {
>>>>> +            return we;
>>>>> +        }
>>>>> +    }
>>>>> +    return NULL;
>>>>> +}
>>>>> +
>>>>> +static void
>>>>> +route_table_change(const void *change_, void *aux OVS_UNUSED)
>>>>> +{
>>>>> +    const struct route_table_msg *change = change_;
>>>>> +    if (change && change->rd.rtm_protocol != RTPROT_OVN) {
>>>>> +        if (find_watch_entry(change->rd.rta_table_id)) {
>>>>> +            any_route_table_changed = true;
>>>>> +        }
>>>>> +    }
>>>>> +}
>>>>> +
>>>>> +static void
>>>>> +add_watch_entry(uint32_t table_id)
>>>>> +{
>>>>> +    struct route_table_watch_entry *we;
>>>>> +    uint32_t hash = route_table_notify_hash_watch(table_id);
>>>>> +    we = xzalloc(sizeof *we);
>>>>> +    we->table_id = table_id;
>>>>> +    VLOG_INFO("Registering new route table watcher for table %d.",
>>>>> +             table_id);
>>>>> +    we->nln = nln_create(NETLINK_ROUTE, route_table_parse, &rtmsg);
>>>>> +
>>>>> +    we->route_notifier =
>>>>> +        nln_notifier_create(we->nln, RTNLGRP_IPV4_ROUTE,
>>>>> +                            route_table_change, NULL);
>>>>> +    if (!we->route_notifier) {
>>>>> +        static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5,
>> 1);
>>>>> +        VLOG_WARN_RL(&rl, "Failed to create ipv4 route table
>> watcher for "
>>>>> +                  "table %d. We will miss routing table updates.",
>> table_id);
>>>>> +    }
>>>>> +
>>>>> +    we->route6_notifier =
>>>>> +        nln_notifier_create(we->nln, RTNLGRP_IPV6_ROUTE,
>>>>> +                            route_table_change, NULL);
>>>>> +    if (!we->route6_notifier) {
>>>>> +        static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5,
>> 1);
>>>>> +        VLOG_WARN_RL(&rl, "Failed to create ipv6 route table
>> watcher for "
>>>>> +                  "table %d. We will miss routing table updates.",
>> table_id);
>>>>> +    }
>>>>> +
>>>>> +    hmap_insert(&watches, &we->node, hash);
>>>>> +}
>>>>> +
>>>>> +static void
>>>>> +remove_watch_entry(struct route_table_watch_entry *we)
>>>>> +{
>>>>> +    hmap_remove(&watches, &we->node);
>>>>> +    VLOG_INFO("Removing route table watcher for table %d.",
>> we->table_id);
>>>>> +    nln_notifier_destroy(we->route_notifier);
>>>>> +    nln_notifier_destroy(we->route6_notifier);
>>>>> +    nln_destroy(we->nln);
>>>>> +    free(we);
>>>>> +}
>>>>> +
>>>>> +bool
>>>>> +route_table_notify_run(void)
>>>>> +{
>>>>> +    any_route_table_changed = false;
>>>>> +
>>>>> +    struct route_table_watch_entry *we;
>>>>> +    HMAP_FOR_EACH (we, node, &watches) {
>>>>> +        nln_run(we->nln);
>>>>> +    }
>>>>> +
>>>>> +    return any_route_table_changed;
>>>>> +}
>>>>> +
>>>>> +void
>>>>> +route_table_notify_wait(void)
>>>>> +{
>>>>> +    struct route_table_watch_entry *we;
>>>>> +    HMAP_FOR_EACH (we, node, &watches) {
>>>>> +        nln_wait(we->nln);
>>>>> +    }
>>>>> +}
>>>>> +
>>>>> +void
>>>>> +route_table_notify_update_watches(const struct hmap
>> *route_table_watches)
>>>>> +{
>>>>> +    struct hmapx sync_watches = HMAPX_INITIALIZER(&sync_watches);
>>>>> +    struct route_table_watch_entry *we;
>>>>> +    HMAP_FOR_EACH (we, node, &watches) {
>>>>> +        hmapx_add(&sync_watches, we);
>>>>> +    }
>>>>> +
>>>>> +    struct route_table_watch_request *wr;
>>>>> +    HMAP_FOR_EACH (wr, node, route_table_watches) {
>>>>> +        we = find_watch_entry(wr->table_id);
>>>>> +        if (we) {
>>>>> +            hmapx_find_and_delete(&sync_watches, we);
>>>>> +        } else {
>>>>> +            add_watch_entry(wr->table_id);
>>>>> +        }
>>>>> +    }
>>>>> +
>>>>> +    struct hmapx_node *node;
>>>>> +    HMAPX_FOR_EACH (node, &sync_watches) {
>>>>> +        remove_watch_entry(node->data);
>>>>> +    }
>>>>> +}
>>>>> +
>>>>> +void
>>>>> +route_table_notify_destroy(void)
>>>>> +{
>>>>> +    struct route_table_watch_entry *we;
>>>>> +    HMAP_FOR_EACH_SAFE (we, node, &watches) {
>>>>> +        remove_watch_entry(we);
>>>>> +    }
>>>>> +}
>>>>> diff --git a/controller/route-table-notify.h
>> b/controller/route-table-notify.h
>>>>> new file mode 100644
>>>>> index 000000000..a2bc05a49
>>>>> --- /dev/null
>>>>> +++ b/controller/route-table-notify.h
>>>>> @@ -0,0 +1,44 @@
>>>>> +/*
>>>>> + * Copyright (c) 2025, STACKIT GmbH & Co. KG
>>>>> + *
>>>>> + * 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 ROUTE_TABLE_NOTIFY_H
>>>>> +#define ROUTE_TABLE_NOTIFY_H 1
>>>>> +
>>>>> +#include <stdbool.h>
>>>>> +#include "openvswitch/hmap.h"
>>>>> +
>>>>> +/* Returns true if any route table has changed enough that we need
>>>>> + * to learn new routes. */
>>>>> +bool route_table_notify_run(void);
>>>>> +void route_table_notify_wait(void);
>>>>> +
>>>>> +/* Add a watch request to the hmap. The hmap should later be passed
>> to
>>>>> + * route_table_notify_update_watches*/
>>>>> +void route_table_add_watch_request(struct hmap *route_table_watches,
>>>>> +                                   uint32_t table_id);
>>>>> +
>>>>> +/* Cleanup all watch request in the provided hmap that where added
>> using
>>>>> + * route_table_add_watch_request. */
>>>>> +void route_table_watch_request_cleanup(struct hmap
>> *route_table_watches);
>>>>> +
>>>>> +/* Updates the list of route table watches that are currently
>> active.
>>>>> + * hmap should contain struct route_table_watch_request */
>>>>> +void route_table_notify_update_watches(const struct hmap
>> *route_table_watches);
>>>>> +
>>>>> +/* Cleans up all route table watches. */
>>>>> +void route_table_notify_destroy(void);
>>>>> +
>>>>> +#endif /* ROUTE_TABLE_NOTIFY_H */
>>>>> diff --git a/tests/system-ovn.at b/tests/system-ovn.at
>>>>> index a13ee4bbf..8b3238a96 100644
>>>>> --- a/tests/system-ovn.at
>>>>> +++ b/tests/system-ovn.at
>>>>> @@ -15677,8 +15677,6 @@ blackhole 198.51.100.0/24 proto 84 metric
>> 1000])
>>>>>  # Now we test route learning.
>>>>>  check_row_count Learned_Route 0
>>>>>  check ip route add 233.252.0.0/24 via 192.168.10.10 dev lo onlink
>> vrf ovnvrf1337
>>>>> -# For now we trigger a recompute as route watching is not yet
>> implemented.
>>>>> -check ovn-appctl -t ovn-controller inc-engine/recompute
>>>>>  check ovn-nbctl --wait=hv sync
>>>>>  check_row_count Learned_Route 1
>>>>>  lp=$(fetch_column port_binding _uuid logical_port=internet-phys)
>>>>> @@ -15925,8 +15923,6 @@ blackhole 198.51.100.0/24 proto 84 metric
>> 1000])
>>>>>  # Now we test route learning.
>>>>>  check_row_count Learned_Route 0
>>>>>  check ip route add 233.252.0.0/24 via 192.168.10.10 dev lo onlink
>> vrf ovnvrf1337
>>>>> -# For now we trigger a recompute as route watching is not yet
>> implemented.
>>>>> -check ovn-appctl -t ovn-controller inc-engine/recompute
>>>>>  check ovn-nbctl --wait=hv sync
>>>>>  check_row_count Learned_Route 1
>>>>>  lp=$(fetch_column port_binding _uuid logical_port=internet-phys)
>>>>> --
>>>>> 2.47.1
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> dev mailing list
>>>>> [email protected]
>>>>> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
>>>>>
>>>> _______________________________________________
>>>> dev mailing list
>>>> [email protected]
>>>> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
>>
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