On Wed, Nov 5, 2025 at 7:23 PM Han Zhou <[email protected]> wrote:
>
>
>
> On Mon, Nov 3, 2025 at 6:21 PM <[email protected]> wrote:
> >
> > From: Numan Siddique <[email protected]>
> >
> > Signed-off-by: Numan Siddique <[email protected]>
>
> This module seems to have lots of redundant code from controller/ofctrl.c.  
> Shall we also consider reusing them? Perhaps adding a TODO for now?

I'll add a TODO for now and revisit this and the lflow.c to move the
common code to the lib.

Thanks
Numan

>
> Best regards,
> Han
>
> > ---
> >  br-controller/automake.mk         |   2 +
> >  br-controller/br-ofctrl.c         | 730 ++++++++++++++++++++++++++++++
> >  br-controller/br-ofctrl.h         |  33 ++
> >  br-controller/en-bridge-data.c    |  40 ++
> >  br-controller/en-bridge-data.h    |   4 +
> >  br-controller/ovn-br-controller.c | 116 ++++-
> >  tests/automake.mk                 |   5 +-
> >  tests/ovn-br-controller.at        | 330 ++++++++++++++
> >  tests/testsuite.at                |   1 +
> >  9 files changed, 1255 insertions(+), 6 deletions(-)
> >  create mode 100644 br-controller/br-ofctrl.c
> >  create mode 100644 br-controller/br-ofctrl.h
> >  create mode 100644 tests/ovn-br-controller.at
> >
> > diff --git a/br-controller/automake.mk b/br-controller/automake.mk
> > index 4baea4f6fe..f8cae3a098 100644
> > --- a/br-controller/automake.mk
> > +++ b/br-controller/automake.mk
> > @@ -2,6 +2,8 @@ bin_PROGRAMS += br-controller/ovn-br-controller
> >  br_controller_ovn_br_controller_SOURCES = \
> >         br-controller/br-flow-mgr.c \
> >         br-controller/br-flow-mgr.h \
> > +       br-controller/br-ofctrl.c \
> > +       br-controller/br-ofctrl.h \
> >         br-controller/en-bridge-data.c \
> >         br-controller/en-bridge-data.h \
> >         br-controller/en-lflow.c \
> > diff --git a/br-controller/br-ofctrl.c b/br-controller/br-ofctrl.c
> > new file mode 100644
> > index 0000000000..ababee463f
> > --- /dev/null
> > +++ b/br-controller/br-ofctrl.c
> > @@ -0,0 +1,730 @@
> > +/*
> > + * 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>
> > +
> > +/* OVS includes. */
> > +#include "bitmap.h"
> > +#include "byte-order.h"
> > +#include "dirs.h"
> > +#include "dp-packet.h"
> > +#include "flow.h"
> > +#include "hash.h"
> > +#include "hindex.h"
> > +#include "lib/socket-util.h"
> > +#include "lib/util.h"
> > +#include "lib/vswitch-idl.h"
> > +#include "openflow/openflow.h"
> > +#include "openvswitch/dynamic-string.h"
> > +#include "openvswitch/hmap.h"
> > +#include "openvswitch/list.h"
> > +#include "openvswitch/match.h"
> > +#include "openvswitch/ofp-actions.h"
> > +#include "openvswitch/ofp-bundle.h"
> > +#include "openvswitch/ofp-flow.h"
> > +#include "openvswitch/ofp-group.h"
> > +#include "openvswitch/ofp-match.h"
> > +#include "openvswitch/ofp-msgs.h"
> > +#include "openvswitch/ofp-meter.h"
> > +#include "openvswitch/ofp-packet.h"
> > +#include "openvswitch/ofp-print.h"
> > +#include "openvswitch/ofp-util.h"
> > +#include "openvswitch/ofpbuf.h"
> > +#include "openvswitch/vlog.h"
> > +#include "openvswitch/poll-loop.h"
> > +#include "openvswitch/rconn.h"
> > +
> > +/* OVN includes. */
> > +#include "br-flow-mgr.h"
> > +#include "en-bridge-data.h"
> > +#include "br-ofctrl.h"
> > +#include "lib/ovn-util.h"
> > +#include "lib/ovn-br-idl.h"
> > +
> > +VLOG_DEFINE_THIS_MODULE(brofctrl);
> > +
> > +/* Connection state machine. */
> > +#define STATES                                  \
> > +    STATE(S_NEW)                                \
> > +    STATE(S_WAIT_BEFORE_CLEAR)                  \
> > +    STATE(S_CLEAR_FLOWS)                        \
> > +    STATE(S_UPDATE_FLOWS)
> > +
> > +enum br_ofctrl_state {
> > +#define STATE(NAME) NAME,
> > +    STATES
> > +#undef STATE
> > +};
> > +
> > +/* An in-flight update to the switch's flow table.
> > + *
> > + * When we receive a barrier reply from the switch with the given 'xid', we
> > + * know that the switch is caught up to the requested sequence number
> > + * 'req_cfg' (and make that available to the client via
> > + * br_ofctrl_get_cur_cfg(), so that it can store it into external state. */
> > +struct br_ofctrl_flow_update {
> > +    struct ovs_list list_node;  /* In 'flow_updates'. */
> > +    ovs_be32 xid;               /* OpenFlow transaction ID for barrier. */
> > +    uint64_t req_cfg;           /* Requested sequence number. */
> > +};
> > +
> > +struct br_ofctrl {
> > +    struct hmap_node hmap_node;
> > +    char *bridge; /* key. */
> > +
> > +    /* OpenFlow connection to the switch. */
> > +    struct rconn *swconn;
> > +    int probe_interval;
> > +    char *conn_target;
> > +
> > +    unsigned int wait_before_clear_time;
> > +    /* The time when the state S_WAIT_BEFORE_CLEAR should complete.
> > +     * If the timer is not started yet, it is set to 0. */
> > +    long long int wait_before_clear_expire;
> > +
> > +    /* Currently in-flight updates. */
> > +    struct ovs_list flow_updates;
> > +
> > +    /* req_cfg of latest committed flow update. */
> > +    uint64_t cur_cfg;
> > +    uint64_t old_req_cfg;
> > +    bool skipped_last_time;
> > +
> > +    /* Indicates if we just went through the S_CLEAR_FLOWS state, which 
> > means
> > +     * we need to perform a one time deletion for all the existing flows,
> > +     * groups and meters. This can happen during initialization or OpenFlow
> > +     * reconnection (e.g. after OVS restart). */
> > +    bool br_ofctrl_initial_clear;
> > +
> > +    /* Last seen sequence number for 'swconn'.  When this differs from
> > +     * rconn_get_connection_seqno(rconn), 'swconn' has reconnected. */
> > +    unsigned int seqno;
> > +
> > +    /* Counter for in-flight OpenFlow messages on 'swconn'.  We only send 
> > a new
> > +     * round of flow table modifications to the switch when the counter 
> > falls
> > +     * to zero, to avoid unbounded buffering. */
> > +    struct rconn_packet_counter *tx_counter;
> > +
> > +    /* Current state. */
> > +    enum br_ofctrl_state state;
> > +};
> > +
> > +static struct hmap br_ofctrls = HMAP_INITIALIZER(&br_ofctrls);
> > +
> > +static struct br_ofctrl *br_ofctrl_get(const char *bridge);
> > +static void br_ofctrl_put(struct br_ofctrl *br_ofctrl, uint64_t req_cfg,
> > +                          bool lflows_changed, bool pflows_changed);
> > +static void br_ofctrl_destroy(struct br_ofctrl *);
> > +static ovs_be32 queue_msg(struct br_ofctrl *, struct ofpbuf *);
> > +static struct br_ofctrl_flow_update *br_ofctrl_flow_update_from_list_node(
> > +    const struct ovs_list *);
> > +static bool br_ofctrl_run__(struct br_ofctrl *);
> > +static bool br_ofctrl_has_backlog(struct br_ofctrl *);
> > +static bool br_ofctrl_can_put(struct br_ofctrl *);
> > +
> > +void
> > +br_ofctrls_init(void)
> > +{
> > +
> > +}
> > +
> > +void
> > +br_ofctrls_destroy(void)
> > +{
> > +    struct br_ofctrl *br_ofctrl;
> > +    HMAP_FOR_EACH_POP (br_ofctrl, hmap_node, &br_ofctrls) {
> > +        br_ofctrl_destroy(br_ofctrl);
> > +    }
> > +
> > +    hmap_destroy(&br_ofctrls);
> > +}
> > +
> > +void
> > +br_ofctrls_add_or_update_bridge(struct ovn_bridge *br)
> > +{
> > +    ovs_assert(br->ovs_br);
> > +
> > +    struct br_ofctrl *br_ofctrl = br_ofctrl_get(br->db_br->name);
> > +
> > +    if (!br_ofctrl) {
> > +        br_ofctrl = xzalloc(sizeof *br_ofctrl);
> > +        br_ofctrl->bridge = xstrdup(br->db_br->name);
> > +        br_ofctrl->swconn = rconn_create(0, 0, DSCP_DEFAULT,
> > +                                         1 << OFP15_VERSION);
> > +        br_ofctrl->tx_counter = rconn_packet_counter_create();
> > +        ovs_list_init(&br_ofctrl->flow_updates);
> > +
> > +        hmap_insert(&br_ofctrls, &br_ofctrl->hmap_node,
> > +                    hash_string(br_ofctrl->bridge, 0));
> > +    } else {
> > +        free(br_ofctrl->conn_target);
> > +    }
> > +
> > +    br_ofctrl->probe_interval = br->probe_interval;
> > +    br_ofctrl->conn_target = xstrdup(br->conn_target);
> > +    br_ofctrl->wait_before_clear_time = br->wait_before_clear_time;
> > +}
> > +
> > +void
> > +br_ofctrls_remove_bridge(const char *bridge)
> > +{
> > +    struct br_ofctrl *br_ofctrl = br_ofctrl_get(bridge);
> > +    if (br_ofctrl) {
> > +        hmap_remove(&br_ofctrls, &br_ofctrl->hmap_node);
> > +        br_ofctrl_destroy(br_ofctrl);
> > +    }
> > +}
> > +
> > +void
> > +br_ofctrls_get_bridges(struct sset *managed_bridges)
> > +{
> > +    struct br_ofctrl *br_ofctrl;
> > +    HMAP_FOR_EACH (br_ofctrl, hmap_node, &br_ofctrls) {
> > +        sset_add(managed_bridges, br_ofctrl->bridge);
> > +    }
> > +}
> > +
> > +/* Runs the OpenFlow state machine against each bridge in the br_ofctrls 
> > hmap,
> > + * which is local to the hypervisor on which we are running.
> > + *
> > + * Returns 'true' if an OpenFlow reconnect happened for any of the bridge;
> > + * 'false' otherwise.
> > + */
> > +bool
> > +br_ofctrls_run(void)
> > +{
> > +    bool reconnected = false;
> > +
> > +    struct br_ofctrl *br_ofctrl;
> > +    HMAP_FOR_EACH (br_ofctrl, hmap_node, &br_ofctrls) {
> > +        reconnected |= br_ofctrl_run__(br_ofctrl);
> > +    }
> > +
> > +    return reconnected;
> > +}
> > +
> > +/* Programs the flow table on the switch, if possible, by the flows
> > + * added to the br-flow-mgr.
> > + *
> > + * This should be called after br_ofctrls_run() within the main loop. */
> > +void
> > +br_ofctrls_put(uint64_t req_cfg, bool lflows_changed, bool pflows_changed)
> > +{
> > +    struct br_ofctrl *br_ofctrl;
> > +    HMAP_FOR_EACH (br_ofctrl, hmap_node, &br_ofctrls) {
> > +        br_ofctrl_put(br_ofctrl, req_cfg, lflows_changed, pflows_changed);
> > +    }
> > +}
> > +
> > +void
> > +br_ofctrls_wait(void)
> > +{
> > +    struct br_ofctrl *br_ofctrl;
> > +    HMAP_FOR_EACH (br_ofctrl, hmap_node, &br_ofctrls) {
> > +        rconn_run_wait(br_ofctrl->swconn);
> > +        rconn_recv_wait(br_ofctrl->swconn);
> > +    }
> > +}
> > +
> > +uint64_t
> > +br_ofctrl_get_cur_cfg(void)
> > +{
> > +    uint64_t of_cur_cfg = UINT64_MAX;
> > +    struct br_ofctrl *br_ofctrl;
> > +    HMAP_FOR_EACH (br_ofctrl, hmap_node, &br_ofctrls) {
> > +        of_cur_cfg = MIN(of_cur_cfg, br_ofctrl->cur_cfg);
> > +    }
> > +
> > +    return of_cur_cfg;
> > +}
> > +
> > +/* Static functions. */
> > +
> > +static void
> > +br_ofctrl_destroy(struct br_ofctrl *br_ofctrl)
> > +{
> > +    rconn_destroy(br_ofctrl->swconn);
> > +    rconn_packet_counter_destroy(br_ofctrl->tx_counter);
> > +    free(br_ofctrl->bridge);
> > +    free(br_ofctrl);
> > +}
> > +
> > +static struct br_ofctrl *
> > +br_ofctrl_get(const char *bridge)
> > +{
> > +    struct br_ofctrl *br_ofctrl;
> > +    uint32_t hash = hash_string(bridge, 0);
> > +    HMAP_FOR_EACH_WITH_HASH (br_ofctrl, hmap_node, hash, &br_ofctrls) {
> > +        if (!strcmp(br_ofctrl->bridge, bridge)) {
> > +            return br_ofctrl;
> > +        }
> > +    }
> > +
> > +    return NULL;
> > +}
> > +
> > +static ovs_be32
> > +queue_msg(struct br_ofctrl *br_ofctrl, struct ofpbuf *msg)
> > +{
> > +    const struct ofp_header *oh = msg->data;
> > +    ovs_be32 xid_ = oh->xid;
> > +    rconn_send(br_ofctrl->swconn, msg, br_ofctrl->tx_counter);
> > +    return xid_;
> > +}
> > +
> > +static void
> > +log_openflow_rl(struct vlog_rate_limit *rl, enum vlog_level level,
> > +                const struct ofp_header *oh, const char *title)
> > +{
> > +    if (!vlog_should_drop(&this_module, level, rl)) {
> > +        char *s = ofp_to_string(oh, ntohs(oh->length), NULL, NULL, 2);
> > +        vlog(&this_module, level, "%s: %s", title, s);
> > +        free(s);
> > +    }
> > +}
> > +
> > +static struct br_ofctrl_flow_update *
> > +br_ofctrl_flow_update_from_list_node(const struct ovs_list *list_node)
> > +{
> > +    return CONTAINER_OF(list_node, struct br_ofctrl_flow_update, 
> > list_node);
> > +}
> > +
> > +/* br_ofctrl state machine functions. */
> > +
> > +static void
> > +br_ofctrl_recv(struct br_ofctrl *br_ofctrl, const struct ofp_header *oh,
> > +            enum ofptype type)
> > +{
> > +    if (type == OFPTYPE_ECHO_REQUEST) {
> > +        queue_msg(br_ofctrl, ofputil_encode_echo_reply(oh));
> > +    } else if (type == OFPTYPE_ERROR) {
> > +        static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
> > +        log_openflow_rl(&rl, VLL_INFO, oh, "OpenFlow error");
> > +        rconn_reconnect(br_ofctrl->swconn);
> > +    } else {
> > +        static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
> > +        log_openflow_rl(&rl, VLL_DBG, oh, "OpenFlow packet ignored");
> > +    }
> > +}
> > +
> > +
> > +/* S_NEW, for a new connection.
> > + *
> > + */
> > +
> > +static void
> > +run_S_NEW(struct br_ofctrl *br_ofctrl)
> > +{
> > +    br_ofctrl->state = S_WAIT_BEFORE_CLEAR;
> > +}
> > +
> > +static void
> > +recv_S_NEW(struct br_ofctrl *br_ofctrl OVS_UNUSED,
> > +           const struct ofp_header *oh OVS_UNUSED,
> > +           enum ofptype type OVS_UNUSED)
> > +{
> > +    OVS_NOT_REACHED();
> > +}
> > +
> > +/* S_WAIT_BEFORE_CLEAR, we are almost ready to set up flows, but just wait 
> > for
> > + * a while until the initial flow compute to complete before we clear the
> > + * existing flows in OVS, so that we won't end up with an empty flow table,
> > + * which may cause data plane down time. */
> > +static void
> > +run_S_WAIT_BEFORE_CLEAR(struct br_ofctrl *br_ofctrl)
> > +{
> > +    if (!br_ofctrl->wait_before_clear_time ||
> > +        (br_ofctrl->wait_before_clear_expire &&
> > +         time_msec() >= br_ofctrl->wait_before_clear_expire)) {
> > +        br_ofctrl->state = S_CLEAR_FLOWS;
> > +        return;
> > +    }
> > +
> > +    if (!br_ofctrl->wait_before_clear_expire) {
> > +        /* Start the timer. */
> > +        br_ofctrl->wait_before_clear_expire =
> > +            time_msec() + br_ofctrl->wait_before_clear_time;
> > +    }
> > +    poll_timer_wait_until(br_ofctrl->wait_before_clear_expire);
> > +}
> > +
> > +static void
> > +recv_S_WAIT_BEFORE_CLEAR(struct br_ofctrl *br_ofctrl,
> > +                         const struct ofp_header *oh, enum ofptype type)
> > +{
> > +    br_ofctrl_recv(br_ofctrl, oh, type);
> > +}
> > +
> > +/* Sends an OFPT_TABLE_MOD to clear all flows, then transitions to
> > + * S_UPDATE_FLOWS. */
> > +
> > +static void
> > +run_S_CLEAR_FLOWS(struct br_ofctrl *br_ofctrl)
> > +{
> > +    VLOG_DBG("clearing all flows for bridge %s", br_ofctrl->bridge);
> > +
> > +    /* Set the flag so that the ofctrl_run() can clear the existing flows,
> > +     * groups and meters. We clear them in ofctrl_run() right before the 
> > new
> > +     * ones are installed to avoid data plane downtime. */
> > +    br_ofctrl->br_ofctrl_initial_clear = true;
> > +
> > +    /* Clear installed_flows, to match the state of the switch. */
> > +    br_flow_flush_oflows(br_ofctrl->bridge);
> > +
> > +    /* All flow updates are irrelevant now. */
> > +    struct br_ofctrl_flow_update *fup;
> > +    LIST_FOR_EACH_SAFE (fup, list_node, &br_ofctrl->flow_updates) {
> > +        ovs_list_remove(&fup->list_node);
> > +        free(fup);
> > +    }
> > +
> > +    br_ofctrl->state = S_UPDATE_FLOWS;
> > +
> > +    /* Give a chance for the main loop to call br_ofctrl_put() in case 
> > there
> > +     * were pending flows waiting ofctrl state change to S_UPDATE_FLOWS. */
> > +    poll_immediate_wake();
> > +}
> > +
> > +static void
> > +recv_S_CLEAR_FLOWS(struct br_ofctrl *br_ofctrl,
> > +                   const struct ofp_header *oh, enum ofptype type)
> > +{
> > +    br_ofctrl_recv(br_ofctrl, oh, type);
> > +}
> > +
> > +/* S_UPDATE_FLOWS, for maintaining the flow table over time.
> > + *
> > + * Compare the installed flows to the ones we want.  Send OFPT_FLOW_MOD as
> > + * necessary.
> > + *
> > + * This is a terminal state.  We only transition out of it if the 
> > connection
> > + * drops. */
> > +
> > +static void
> > +run_S_UPDATE_FLOWS(struct br_ofctrl *br_ofctrl OVS_UNUSED)
> > +{
> > +    /* Nothing to do here.
> > +     *
> > +     * Being in this state enables br_ofctrl_put() to work, however. */
> > +}
> > +
> > +static void
> > +br_flow_updates_handle_barrier_reply(struct br_ofctrl *br_ofctrl,
> > +                                     const struct ofp_header *oh)
> > +{
> > +    if (ovs_list_is_empty(&br_ofctrl->flow_updates)) {
> > +        return;
> > +    }
> > +
> > +    struct br_ofctrl_flow_update *fup = 
> > br_ofctrl_flow_update_from_list_node(
> > +        ovs_list_front(&br_ofctrl->flow_updates));
> > +    if (fup->xid == oh->xid) {
> > +        if (fup->req_cfg >= br_ofctrl->cur_cfg) {
> > +            br_ofctrl->cur_cfg = fup->req_cfg;
> > +        }
> > +        ovs_list_remove(&fup->list_node);
> > +        free(fup);
> > +    }
> > +}
> > +
> > +static void
> > +recv_S_UPDATE_FLOWS(struct br_ofctrl *br_ofctrl,
> > +                    const struct ofp_header *oh, enum ofptype type)
> > +{
> > +    if (type == OFPTYPE_BARRIER_REPLY) {
> > +        br_flow_updates_handle_barrier_reply(br_ofctrl, oh);
> > +    } else {
> > +        br_ofctrl_recv(br_ofctrl, oh, type);
> > +    }
> > +}
> > +
> > +static bool
> > +br_ofctrl_run__(struct br_ofctrl *br_ofctrl)
> > +{
> > +    struct rconn *swconn = br_ofctrl->swconn;
> > +
> > +    ovn_update_swconn_at(swconn, br_ofctrl->conn_target,
> > +                         br_ofctrl->probe_interval, "br_ofctrl");
> > +    rconn_run(swconn);
> > +
> > +    if (!rconn_is_connected(swconn)) {
> > +        return false;
> > +    }
> > +
> > +    bool reconnected = false;
> > +
> > +    if (br_ofctrl->seqno != rconn_get_connection_seqno(swconn)) {
> > +        br_ofctrl->seqno = rconn_get_connection_seqno(swconn);
> > +        reconnected = true;
> > +        br_ofctrl->state = S_NEW;
> > +    }
> > +
> > +    bool progress = true;
> > +    for (int i = 0; progress && i < 50; i++) {
> > +        /* Allow the state machine to run. */
> > +        enum br_ofctrl_state old_state = br_ofctrl->state;
> > +        switch (br_ofctrl->state) {
> > +#define STATE(NAME) case NAME: run_##NAME(br_ofctrl); break;
> > +            STATES
> > +#undef STATE
> > +        default:
> > +            OVS_NOT_REACHED();
> > +        }
> > +
> > +        /* Try to process a received packet. */
> > +        struct ofpbuf *msg = rconn_recv(swconn);
> > +        if (msg) {
> > +            const struct ofp_header *oh = msg->data;
> > +            enum ofptype type;
> > +            enum ofperr error;
> > +
> > +            error = ofptype_decode(&type, oh);
> > +            if (!error) {
> > +                switch (br_ofctrl->state) {
> > +#define STATE(NAME) case NAME: recv_##NAME(br_ofctrl, oh, type); break;
> > +                    STATES
> > +#undef STATE
> > +                default:
> > +                    OVS_NOT_REACHED();
> > +                }
> > +            } else {
> > +                char *s = ofp_to_string(oh, ntohs(oh->length), NULL, NULL, 
> > 1);
> > +                VLOG_WARN("could not decode OpenFlow message (%s): %s",
> > +                          ofperr_to_string(error), s);
> > +                free(s);
> > +            }
> > +
> > +            ofpbuf_delete(msg);
> > +        }
> > +
> > +        /* If we did some work, plan to go around again. */
> > +        progress = old_state != br_ofctrl->state || msg;
> > +    }
> > +    if (progress) {
> > +        /* We bailed out to limit the amount of work we do in one go, to 
> > allow
> > +         * other code a chance to run.  We were still making progress at 
> > that
> > +         * point, so ensure that we come back again without waiting. */
> > +        poll_immediate_wake();
> > +    }
> > +
> > +    return reconnected;
> > +}
> > +
> > +static bool
> > +br_ofctrl_has_backlog(struct br_ofctrl *br_ofctrl)
> > +{
> > +    if (rconn_packet_counter_n_packets(br_ofctrl->tx_counter)
> > +        || rconn_get_version(br_ofctrl->swconn) < 0) {
> > +        return true;
> > +    }
> > +    return false;
> > +}
> > +
> > +/* The flow table can be updated if the connection to the switch is up and
> > + * in the correct state and not backlogged with existing flow_mods.  (Our
> > + * criteria for being backlogged appear very conservative, but the socket
> > + * between ovn-controller and OVS provides some buffering.) */
> > +static bool
> > +br_ofctrl_can_put(struct br_ofctrl *br_ofctrl)
> > +{
> > +    if (br_ofctrl->state != S_UPDATE_FLOWS
> > +        || br_ofctrl_has_backlog(br_ofctrl)) {
> > +        return false;
> > +    }
> > +    return true;
> > +}
> > +
> > +static struct ofpbuf *
> > +encode_flow_mod(struct ofputil_flow_mod *fm)
> > +{
> > +    fm->buffer_id = UINT32_MAX;
> > +    fm->out_port = OFPP_ANY;
> > +    fm->out_group = OFPG_ANY;
> > +    return ofputil_encode_flow_mod(fm, OFPUTIL_P_OF15_OXM);
> > +}
> > +
> > +static struct ofpbuf *
> > +encode_bundle_add(struct ofpbuf *msg, struct ofputil_bundle_ctrl_msg *bc)
> > +{
> > +    struct ofputil_bundle_add_msg bam = {
> > +        .bundle_id = bc->bundle_id,
> > +        .flags     = bc->flags,
> > +        .msg       = msg->data,
> > +    };
> > +    return ofputil_encode_bundle_add(OFP15_VERSION, &bam);
> > +}
> > +
> > +static bool
> > +add_flow_mod(struct ofputil_flow_mod *fm,
> > +             struct ofputil_bundle_ctrl_msg *bc,
> > +             struct ovs_list *msgs)
> > +{
> > +    struct ofpbuf *msg = encode_flow_mod(fm);
> > +    struct ofpbuf *bundle_msg = encode_bundle_add(msg, bc);
> > +
> > +    uint32_t flow_mod_len = msg->size;
> > +    uint32_t bundle_len = bundle_msg->size;
> > +
> > +    ofpbuf_delete(msg);
> > +
> > +    if (flow_mod_len > UINT16_MAX || bundle_len > UINT16_MAX) {
> > +        ofpbuf_delete(bundle_msg);
> > +
> > +        return false;
> > +    }
> > +
> > +    ovs_list_push_back(msgs, &bundle_msg->list_node);
> > +    return true;
> > +}
> > +
> > +static void
> > +br_ofctrl_put(struct br_ofctrl *br_ofctrl, uint64_t req_cfg,
> > +              bool lflows_changed, bool pflows_changed)
> > +{
> > +    bool need_put = false;
> > +
> > +    if (lflows_changed || pflows_changed || br_ofctrl->skipped_last_time ||
> > +        br_ofctrl->br_ofctrl_initial_clear) {
> > +        need_put = true;
> > +        br_ofctrl->old_req_cfg = req_cfg;
> > +    } else if (req_cfg != br_ofctrl->old_req_cfg) {
> > +        /* req_cfg changed since last br_ofctrl_put() call */
> > +        if (br_ofctrl->cur_cfg == br_ofctrl->old_req_cfg) {
> > +            /* If there are no updates pending, we were up-to-date already,
> > +             * update with the new req_cfg.
> > +             */
> > +            if (ovs_list_is_empty(&br_ofctrl->flow_updates)) {
> > +                br_ofctrl->cur_cfg = req_cfg;
> > +                br_ofctrl->old_req_cfg = req_cfg;
> > +            }
> > +        } else {
> > +            need_put = true;
> > +            br_ofctrl->old_req_cfg = req_cfg;
> > +        }
> > +    }
> > +
> > +    if (!need_put) {
> > +        VLOG_DBG("br_ofctrl_put not needed for bridge %s", 
> > br_ofctrl->bridge);
> > +        return;
> > +    }
> > +
> > +    /* OpenFlow messages to send to the switch to bring it up-to-date. */
> > +    struct ovs_list msgs = OVS_LIST_INITIALIZER(&msgs);
> > +
> > +    if (!br_ofctrl_can_put(br_ofctrl)) {
> > +        VLOG_DBG("br_ofctrl_put can't be performed for bridge %s",
> > +                 br_ofctrl->bridge);
> > +
> > +        br_ofctrl->skipped_last_time = true;
> > +        return;
> > +    }
> > +
> > +    /* Add all flow updates into a bundle. */
> > +    static int bundle_id = 0;
> > +    struct ofputil_bundle_ctrl_msg bc = {
> > +        .bundle_id = bundle_id++,
> > +        .flags     = OFPBF_ORDERED | OFPBF_ATOMIC,
> > +    };
> > +    struct ofpbuf *bundle_open, *bundle_commit;
> > +
> > +    /* Open a new bundle. */
> > +    bc.type = OFPBCT_OPEN_REQUEST;
> > +    bundle_open = ofputil_encode_bundle_ctrl_request(OFP15_VERSION, &bc);
> > +    ovs_list_push_back(&msgs, &bundle_open->list_node);
> > +
> > +    if (br_ofctrl->br_ofctrl_initial_clear) {
> > +        /* Send a flow_mod to delete all flows. */
> > +        struct ofputil_flow_mod fm = {
> > +            .table_id = OFPTT_ALL,
> > +            .command = OFPFC_DELETE,
> > +        };
> > +        minimatch_init_catchall(&fm.match);
> > +        add_flow_mod(&fm, &bc, &msgs);
> > +        minimatch_destroy(&fm.match);
> > +
> > +        br_ofctrl->br_ofctrl_initial_clear = false;
> > +    }
> > +
> > +    br_flow_populate_oflow_msgs(br_ofctrl->bridge, &msgs);
> > +
> > +    if (ovs_list_back(&msgs) == &bundle_open->list_node) {
> > +        /* No flow updates.  Removing the bundle open request. */
> > +        ovs_list_pop_back(&msgs);
> > +        ofpbuf_delete(bundle_open);
> > +    } else {
> > +        /* Committing the bundle. */
> > +        bc.type = OFPBCT_COMMIT_REQUEST;
> > +        bundle_commit = ofputil_encode_bundle_ctrl_request(OFP15_VERSION, 
> > &bc);
> > +        ovs_list_push_back(&msgs, &bundle_commit->list_node);
> > +    }
> > +
> > +    if (!ovs_list_is_empty(&msgs)) {
> > +        /* Add a barrier to the list of messages. */
> > +        struct ofpbuf *barrier = 
> > ofputil_encode_barrier_request(OFP15_VERSION);
> > +        const struct ofp_header *oh = barrier->data;
> > +        ovs_be32 xid_ = oh->xid;
> > +        ovs_list_push_back(&msgs, &barrier->list_node);
> > +
> > +        /* Queue the messages. */
> > +        struct ofpbuf *msg;
> > +        LIST_FOR_EACH_POP (msg, list_node, &msgs) {
> > +            queue_msg(br_ofctrl, msg);
> > +        }
> > +
> > +        /* Track the flow update. */
> > +        struct br_ofctrl_flow_update *fup;
> > +        LIST_FOR_EACH_REVERSE_SAFE (fup, list_node, 
> > &br_ofctrl->flow_updates) {
> > +            if (req_cfg < fup->req_cfg) {
> > +                /* This br_ofctrl_flow_update is for a configuration later 
> > than
> > +                 * 'req_cfg'.  This should not normally happen, because it
> > +                 * means that the local seqno decreased and it should 
> > normally
> > +                 * be monotonically increasing. */
> > +                VLOG_WARN("req_cfg regressed from %"PRId64" to %"PRId64,
> > +                          fup->req_cfg, req_cfg);
> > +                ovs_list_remove(&fup->list_node);
> > +                free(fup);
> > +            } else if (req_cfg == fup->req_cfg) {
> > +                /* This br_ofctrl_flow_update is for the same 
> > configuration as
> > +                 * 'req_cfg'.  Probably, some change to the physical 
> > topology
> > +                 * means that we had to revise the OpenFlow flow table even
> > +                 * though the logical topology did not change.  Update 
> > fp->xid,
> > +                 * so that we don't send a notification that we're 
> > up-to-date
> > +                 * until we're really caught up. */
> > +                VLOG_DBG("advanced xid target for req_cfg=%"PRId64, 
> > req_cfg);
> > +                fup->xid = xid_;
> > +
> > +                return;
> > +            } else {
> > +                break;
> > +            }
> > +        }
> > +
> > +        /* Add a flow update. */
> > +        fup = xmalloc(sizeof *fup);
> > +        ovs_list_push_back(&br_ofctrl->flow_updates, &fup->list_node);
> > +        fup->xid = xid_;
> > +        fup->req_cfg = req_cfg;
> > +    } else if (!ovs_list_is_empty(&br_ofctrl->flow_updates)) {
> > +        /* Getting up-to-date with 'req_cfg' didn't require any extra flow
> > +         * table changes, so whenever we get up-to-date with the most 
> > recent
> > +         * flow table update, we're also up-to-date with 'req_cfg'. */
> > +        struct br_ofctrl_flow_update *fup =
> > +            br_ofctrl_flow_update_from_list_node(
> > +                ovs_list_back(&br_ofctrl->flow_updates));
> > +        fup->req_cfg = req_cfg;
> > +    } else {
> > +        /* We were completely up-to-date before and still are. */
> > +        br_ofctrl->cur_cfg = req_cfg;
> > +    }
> > +}
> > diff --git a/br-controller/br-ofctrl.h b/br-controller/br-ofctrl.h
> > new file mode 100644
> > index 0000000000..9b629e2123
> > --- /dev/null
> > +++ b/br-controller/br-ofctrl.h
> > @@ -0,0 +1,33 @@
> > +/*
> > + * 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 BR_OFCTRL_H
> > +#define BR_OFCTRL_H 1
> > +
> > +struct ovn_bridge;
> > +struct shash;
> > +
> > +void br_ofctrls_init(void);
> > +bool br_ofctrls_run(void);
> > +void br_ofctrls_put(uint64_t req_cfg, bool lflows_changed,
> > +                    bool pflows_changed);
> > +void br_ofctrls_destroy(void);
> > +void br_ofctrls_wait(void);
> > +
> > +void br_ofctrls_add_or_update_bridge(struct ovn_bridge *);
> > +void br_ofctrls_remove_bridge(const char *);
> > +uint64_t br_ofctrl_get_cur_cfg(void);
> > +void br_ofctrls_get_bridges(struct sset *);
> > +
> > +#endif /* BR_OFCTRL_H */
> > \ No newline at end of file
> > diff --git a/br-controller/en-bridge-data.c b/br-controller/en-bridge-data.c
> > index 483c784a37..5c10a1f1f1 100644
> > --- a/br-controller/en-bridge-data.c
> > +++ b/br-controller/en-bridge-data.c
> > @@ -26,6 +26,7 @@
> >
> >  /* OVN includes. */
> >  #include "en-bridge-data.h"
> > +#include "lib/dirs.h"
> >  #include "lib/ovn-br-idl.h"
> >
> >  VLOG_DEFINE_THIS_MODULE(en_bridge_data);
> > @@ -40,6 +41,7 @@ static const struct ovsrec_bridge 
> > *ovsbridge_lookup_by_name(
> >      struct ovsdb_idl_index *ovsrec_bridge_by_name,
> >      const char *name);
> >  static void build_ovn_bridge_iface_simap(struct ovn_bridge *);
> > +static void update_ovn_br_remote(struct ovn_bridge *);
> >
> >  void *
> >  en_bridge_data_init(struct engine_node *node OVS_UNUSED,
> > @@ -114,6 +116,7 @@ ovn_bridges_run(const struct ovnbrrec_bridge_table 
> > *br_table,
> >
> >          br->ovs_br = ovs_br;
> >          build_ovn_bridge_iface_simap(br);
> > +        update_ovn_br_remote(br);
> >      }
> >  }
> >
> > @@ -121,6 +124,7 @@ static void
> >  ovn_bridge_destroy(struct ovn_bridge *br)
> >  {
> >      simap_destroy(&br->ovs_ifaces);
> > +    free(br->conn_target);
> >      free(br);
> >  }
> >
> > @@ -157,3 +161,39 @@ build_ovn_bridge_iface_simap(struct ovn_bridge *br)
> >          }
> >      }
> >  }
> > +
> > +static void
> > +update_ovn_br_remote(struct ovn_bridge *br)
> > +{
> > +    ovs_assert(br->ovs_br);
> > +
> > +    const char *ext_target = smap_get(&br->ovs_br->external_ids,
> > +                                      "ovn-bridge-remote");
> > +    char *target = ext_target
> > +        ? xstrdup(ext_target)
> > +        : xasprintf("unix:%s/%s.mgmt", ovs_rundir(), br->ovs_br->name);
> > +
> > +    if (!br->conn_target || strcmp(br->conn_target, target)) {
> > +        free(br->conn_target);
> > +        br->conn_target = target;
> > +    } else {
> > +        free(target);
> > +    }
> > +
> > +    unsigned long long probe_interval =
> > +        smap_get_ullong(&br->ovs_br->external_ids,
> > +                        "ovn-openflow-remote-probe-interval", 0);
> > +    br->probe_interval = MIN(probe_interval / 1000, INT_MAX);
> > +
> > +    unsigned int _wait_before_clear_time =
> > +        smap_get_uint(&br->ovs_br->external_ids,
> > +                      "ovn-ofctrl-wait-before-clear", 0);
> > +
> > +    if (_wait_before_clear_time != br->wait_before_clear_time) {
> > +        VLOG_INFO("ofctrl-wait-before-clear is now %u ms (was %u ms) "
> > +                  "for bridge %s",
> > +                  _wait_before_clear_time, br->wait_before_clear_time,
> > +                  br->ovs_br->name);
> > +        br->wait_before_clear_time = _wait_before_clear_time;
> > +    }
> > +}
> > diff --git a/br-controller/en-bridge-data.h b/br-controller/en-bridge-data.h
> > index b374798649..05ab556637 100644
> > --- a/br-controller/en-bridge-data.h
> > +++ b/br-controller/en-bridge-data.h
> > @@ -26,6 +26,10 @@ struct ovn_bridge {
> >
> >      /* simap of ovs interface names to ofport numbers. */
> >      struct simap ovs_ifaces;
> > +
> > +    int probe_interval;
> > +    char *conn_target;
> > +    unsigned int wait_before_clear_time;
> >  };
> >
> >  struct ed_type_bridge_data {
> > diff --git a/br-controller/ovn-br-controller.c 
> > b/br-controller/ovn-br-controller.c
> > index ae0e192429..74f2b7a2d2 100644
> > --- a/br-controller/ovn-br-controller.c
> > +++ b/br-controller/ovn-br-controller.c
> > @@ -35,11 +35,13 @@
> >
> >
> >  /* OVN includes. */
> > +#include "br-ofctrl.h"
> >  #include "en-bridge-data.h"
> >  #include "en-lflow.h"
> >  #include "en-pflow.h"
> >  #include "lib/ovn-br-idl.h"
> >  #include "lib/inc-proc-eng.h"
> > +#include "lib/ofctrl-seqno.h"
> >  #include "lib/ovn-util.h"
> >
> >  VLOG_DEFINE_THIS_MODULE(main);
> > @@ -55,6 +57,9 @@ static const char *ssl_ca_cert_file;
> >  /* --unixctl-path: Path to use for unixctl server socket. */
> >  static char *unixctl_path;
> >
> > +/* Registered ofctrl seqno type for br_cfg propagation. */
> > +static size_t ofctrl_seq_type_br_cfg;
> > +
> >  #define BRCTL_NODES \
> >      BRCTL_NODE(br_global) \
> >      BRCTL_NODE(bridge) \
> > @@ -110,7 +115,12 @@ en_br_controller_output_run(struct engine_node *node 
> > OVS_UNUSED,
> >  /* Static function declarations. */
> >  static void ctrl_register_ovs_idl(struct ovsdb_idl *ovs_idl);
> >  static void update_br_db(struct ovsdb_idl *ovs_idl,
> > -                         struct ovsdb_idl *ovn_br_idl);
> > +                         struct ovsdb_idl *ovnbr_idl,
> > +                         unsigned int *ovnbr_cond_seqno);
> > +static unsigned int update_ovnbr_monitors(struct ovsdb_idl *);
> > +static uint64_t get_ovnbr_cfg(const struct ovnbrrec_br_global_table *,
> > +                                  unsigned int cond_seqno,
> > +                                  unsigned int expected_cond_seqno);
> >
> >  int
> >  main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
> > @@ -138,6 +148,9 @@ main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
> >
> >      daemonize_complete();
> >
> > +    /* Register ofctrl seqno types. */
> > +    ofctrl_seq_type_br_cfg = ofctrl_seqno_add_type();
> > +
> >      /* Connect to OVS OVSDB instance. */
> >      struct ovsdb_idl_loop ovs_idl_loop = OVSDB_IDL_LOOP_INITIALIZER(
> >          ovsdb_idl_create(ovs_remote, &ovsrec_idl_class, false, true));
> > @@ -206,8 +219,12 @@ main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
> >      engine_init(&en_br_controller_output, &engine_arg);
> >      engine_ovsdb_node_add_index(&en_ovs_bridge, "name", 
> > ovsrec_bridge_by_name);
> >
> > -    unsigned int ovs_cond_seqno = UINT_MAX;
> > +    unsigned int ovnbr_expected_cond_seqno = UINT_MAX;
> >      unsigned int ovnbr_cond_seqno = UINT_MAX;
> > +    unsigned int ovs_cond_seqno = UINT_MAX;
> > +
> > +    struct ed_type_bridge_data *br_data =
> > +        engine_get_internal_data(&en_bridge_data);
> >
> >      /* Main loop. */
> >      while (!exit_args.exiting) {
> > @@ -224,7 +241,8 @@ main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
> >              ovs_cond_seqno = new_ovs_cond_seqno;
> >          }
> >
> > -        update_br_db(ovs_idl_loop.idl, ovnbr_idl_loop.idl);
> > +        update_br_db(ovs_idl_loop.idl, ovnbr_idl_loop.idl,
> > +                     &ovnbr_expected_cond_seqno);
> >          struct ovsdb_idl_txn *ovnbr_idl_txn
> >              = ovsdb_idl_loop_run(&ovnbr_idl_loop);
> >          unsigned int new_ovnbr_cond_seqno
> > @@ -251,10 +269,48 @@ main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
> >
> >          if (ovsdb_idl_has_ever_connected(ovnbr_idl_loop.idl) && cfg) {
> >              engine_run(true);
> > +
> > +            br_data = engine_get_data(&en_bridge_data);
> > +            if (br_data) {
> > +                struct sset bridges_in_br_ofctrl =
> > +                    SSET_INITIALIZER(&bridges_in_br_ofctrl);
> > +                br_ofctrls_get_bridges(&bridges_in_br_ofctrl);
> > +                struct shash_node *node;
> > +                SHASH_FOR_EACH (node, &br_data->bridges) {
> > +                    struct ovn_bridge *br = node->data;
> > +
> > +                    if (br->ovs_br) {
> > +                        sset_find_and_delete(&bridges_in_br_ofctrl,
> > +                                             br->db_br->name);
> > +                        br_ofctrls_add_or_update_bridge(br);
> > +                    }
> > +                }
> > +
> > +                const char *bridge;
> > +                SSET_FOR_EACH (bridge, &bridges_in_br_ofctrl) {
> > +                    br_ofctrls_remove_bridge(bridge);
> > +                }
> > +
> > +                sset_destroy(&bridges_in_br_ofctrl);
> > +            }
> > +
> > +            br_ofctrls_run();
> > +
> > +            ofctrl_seqno_update_create(
> > +                ofctrl_seq_type_br_cfg,
> > +                
> > get_ovnbr_cfg(ovnbrrec_br_global_table_get(ovnbr_idl_loop.idl),
> > +                              ovnbr_cond_seqno, 
> > ovnbr_expected_cond_seqno));
> > +
> > +            br_ofctrls_put(ofctrl_seqno_get_req_cfg(),
> > +                           engine_node_changed(&en_lflow_output),
> > +                           engine_node_changed(&en_pflow_output));
> > +
> > +            ofctrl_seqno_run(br_ofctrl_get_cur_cfg());
> >          }
> >
> >          unixctl_server_run(unixctl);
> >
> > +        br_ofctrls_wait();
> >          unixctl_server_wait(unixctl);
> >          if (exit_args.exiting) {
> >              poll_immediate_wake();
> > @@ -440,7 +496,8 @@ ctrl_register_ovs_idl(struct ovsdb_idl *ovs_idl)
> >  /* Retrieves the pointer to the OVN Bridge Controller database from 
> > 'ovs_idl'
> >   * and updates 'brdb_idl' with that pointer. */
> >  static void
> > -update_br_db(struct ovsdb_idl *ovs_idl, struct ovsdb_idl *ovnbr_idl)
> > +update_br_db(struct ovsdb_idl *ovs_idl, struct ovsdb_idl *ovnbr_idl,
> > +             unsigned int *ovnbr_cond_seqno)
> >  {
> >      const struct ovsrec_open_vswitch *cfg = 
> > ovsrec_open_vswitch_first(ovs_idl);
> >      if (!cfg) {
> > @@ -449,4 +506,55 @@ update_br_db(struct ovsdb_idl *ovs_idl, struct 
> > ovsdb_idl *ovnbr_idl)
> >
> >      const char *remote = smap_get(&cfg->external_ids, "ovn-br-remote");
> >      ovsdb_idl_set_remote(ovnbr_idl, remote, true);
> > +
> > +    unsigned int next_cond_seqno = update_ovnbr_monitors(ovnbr_idl);
> > +    if (ovnbr_cond_seqno) {
> > +        *ovnbr_cond_seqno = next_cond_seqno;
> > +    }
> > +}
> > +
> > +/* Assume the table exists in the server schema and set its condition. */
> > +#define ovnbr_table_set_req_mon_condition(idl, table, cond) \
> > +    ovnbrrec_##table##_set_condition(idl, cond)
> > +
> > +static unsigned int
> > +update_ovnbr_monitors(struct ovsdb_idl *ovnbr_idl)
> > +{
> > +    struct ovsdb_idl_condition br = OVSDB_IDL_CONDITION_INIT(&br);
> > +    struct ovsdb_idl_condition lf = OVSDB_IDL_CONDITION_INIT(&lf);
> > +
> > +    ovsdb_idl_condition_add_clause_true(&br);
> > +    ovsdb_idl_condition_add_clause_true(&lf);
> > +
> > +    unsigned int cond_seqnos[] = {
> > +        ovnbr_table_set_req_mon_condition(ovnbr_idl, bridge, &br),
> > +        ovnbr_table_set_req_mon_condition(ovnbr_idl, logical_flow, &lf),
> > +    };
> > +
> > +    unsigned int expected_cond_seqno = 0;
> > +    for (size_t i = 0; i < ARRAY_SIZE(cond_seqnos); i++) {
> > +        expected_cond_seqno = MAX(expected_cond_seqno, cond_seqnos[i]);
> > +    }
> > +
> > +    return expected_cond_seqno;
> > +}
> > +
> > +static uint64_t
> > +get_ovnbr_cfg(const struct ovnbrrec_br_global_table *br_global_table,
> > +              unsigned int cond_seqno, unsigned int expected_cond_seqno)
> > +{
> > +    static uint64_t br_cfg = 0;
> > +
> > +    /* Delay getting br_cfg if there are monitor condition changes
> > +     * in flight.  It might be that those changes would instruct the
> > +     * server to send updates that happened before PR_Global.pr_cfg.
> > +     */
> > +    if (cond_seqno != expected_cond_seqno) {
> > +        return br_cfg;
> > +    }
> > +
> > +    const struct ovnbrrec_br_global *br_global
> > +        = ovnbrrec_br_global_table_first(br_global_table);
> > +    br_cfg = br_global ? br_global->br_cfg : 0;
> > +    return br_cfg;
> >  }
> > diff --git a/tests/automake.mk b/tests/automake.mk
> > index 5d55042e61..8ae3105478 100644
> > --- a/tests/automake.mk
> > +++ b/tests/automake.mk
> > @@ -46,7 +46,8 @@ TESTSUITE_AT = \
> >         tests/ovn-lflow-conj-ids.at \
> >         tests/ovn-ipsec.at \
> >         tests/ovn-vif-plug.at \
> > -       tests/ovn-util.at
> > +       tests/ovn-util.at \
> > +       tests/ovn-br-controller.at
> >
> >  SYSTEM_DPDK_TESTSUITE_AT = \
> >         tests/system-dpdk-testsuite.at \
> > @@ -91,7 +92,7 @@ DISTCLEANFILES += tests/atconfig tests/atlocal
> >  MULTINODE_TESTSUITE = $(srcdir)/tests/multinode-testsuite
> >  MULTINODE_TESTSUITE_DIR = $(abs_top_builddir)/tests/multinode-testsuite.dir
> >  MULTINODE_TESTSUITE_RESULTS = $(MULTINODE_TESTSUITE_DIR)/results
> > -AUTOTEST_PATH = 
> > $(ovs_builddir)/utilities:$(ovs_builddir)/vswitchd:$(ovs_builddir)/ovsdb:$(ovs_builddir)/vtep:tests:$(PTHREAD_WIN32_DIR_DLL):$(SSL_DIR):controller-vtep:northd:utilities:controller:ic
> > +AUTOTEST_PATH = 
> > $(ovs_builddir)/utilities:$(ovs_builddir)/vswitchd:$(ovs_builddir)/ovsdb:$(ovs_builddir)/vtep:tests:$(PTHREAD_WIN32_DIR_DLL):$(SSL_DIR):controller-vtep:northd:utilities:controller:ic:br-controller
> >
> >  export ovs_srcdir
> >  export ovs_builddir
> > diff --git a/tests/ovn-br-controller.at b/tests/ovn-br-controller.at
> > new file mode 100644
> > index 0000000000..0c197e222b
> > --- /dev/null
> > +++ b/tests/ovn-br-controller.at
> > @@ -0,0 +1,330 @@
> > +AT_BANNER([ovn_br_controller])
> > +
> > +# OVN_BR_CONTROLLER_START(SIM_NAME)
> > +#
> > +# $1 - optional simulator name. If none is given, runs ovn-br-controller
> > +#      in $ovs_dir.
> > +# Starts the test with a setup with ovn bridge controller.  Each test case 
> > must first
> > +# call this macro and ovn_start.
> > +#
> > +m4_define([OVN_BR_CONTROLLER_START], [
> > +    AT_KEYWORDS([ovn-br-controller])
> > +    mkdir -p "$ovs_dir" || return 1
> > +    mkdir "$ovs_base"/ovn-br || return 1
> > +
> > +    dnl Create databases (vswitch).
> > +    check ovsdb-tool create "$ovs_dir"/vswitchd.db 
> > $ovs_srcdir/vswitchd/vswitch.ovsschema
> > +    check ovsdb-tool create "$ovs_base"/ovn-br/ovn-br.db 
> > "$abs_top_srcdir"/ovn-br.ovsschema
> > +
> > +    dnl Start ovsdb-server.
> > +    start_daemon ovsdb-server --remote=punix:"$ovs_dir"/db.sock \
> > +                             "$ovs_dir"/vswitchd.db
> > +
> > +    ovn_br_remote=unix:"$ovs_base"/ovn-br/ovnbr_db.sock
> > +    dnl Start ovs-vswitchd.
> > +    start_daemon ovs-vswitchd --enable-dummy=system -vvconn -vofproto_dpif
> > +
> > +    ovs-vsctl \
> > +        -- set Open_vSwitch . external-ids:ovn-br-remote=$ovn_br_remote
> > +    dnl Start ovsdb-server for ovn-br.
> > +    as ovn-br start_daemon ovsdb-server 
> > --remote=punix:"$ovs_base"/ovn-br/ovnbr_db.sock \
> > +        "$ovs_base"/ovn-br/ovn-br.db
> > +
> > +    which ovn-br-controller
> > +    dnl Start ovn-br-controller.
> > +    start_daemon ovn-br-controller
> > +])
> > +
> > +m4_define([OVN_BR_CONTROLLER_STOP],[
> > +   echo
> > +   echo "Clean up ovn-br-controller related processes in $2"
> > +   test -n "$2" && as "$2"
> > +   OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> > +   OVS_APP_EXIT_AND_WAIT([ovs-vswitchd])
> > +   OVS_APP_EXIT_AND_WAIT([ovn-br-controller])
> > +
> > +   as ovn-br
> > +   OVS_APP_EXIT_AND_WAIT([ovsdb-server])
> > +])
> > +
> > +AT_SETUP([ovn-br-controller - brctl test])
> > +OVN_BR_CONTROLLER_START
> > +
> > +check as ovn-br ovn-brctl show
> > +check as ovn-br ovn-brctl add-br br0
> > +
> > +AT_CHECK([as ovn-br ovn-brctl show | uuidfilt], [0],
> > +  [bridge <0> (br0)
> > +])
> > +
> > +AT_CHECK([as ovn-br ovn-brctl show br0 | uuidfilt], [0],
> > +  [bridge <0> (br0)
> > +])
> > +
> > +AT_CHECK([as ovn-br ovn-brctl show br1 | uuidfilt], [0], [],
> > +  [ovn-brctl: no row "br1" in table Bridge
> > +])
> > +
> > +check as ovn-br ovn-brctl del-br br0
> > +check as ovn-br ovn-brctl show
> > +
> > +check as ovn-br ovn-brctl add-br br0
> > +
> > +check as ovn-br ovn-brctl add-flow br0 0 1000 "ip4 && tcp" "drop;"
> > +check as ovn-br ovn-brctl add-flow br0 0 1000 "ip4 && udp" "next;"
> > +check as ovn-br ovn-brctl add-flow br0 1 0 "ip4 && udp" "output;"
> > +
> > +check as ovn-br ovn-brctl add-br br1
> > +
> > +check as ovn-br ovn-brctl add-flow br1 0 1000 "ip4 && tcp.dst == 1000 && 
> > ip4.dst == 10.0.0.10" "drop;"
> > +check as ovn-br ovn-brctl add-flow br1 0 0 "1" "output;"
> > +
> > +AT_CHECK([as ovn-br ovn-brctl dump-flows | uuidfilt], [0],
> > +  [dnl
> > +Bridge: br0 (<0>)
> > +  table=0 , priority=1000 , match=(ip4 && tcp), action=(drop;)
> > +  table=0 , priority=1000 , match=(ip4 && udp), action=(next;)
> > +  table=1 , priority=0    , match=(ip4 && udp), action=(output;)
> > +Bridge: br1 (<1>)
> > +  table=0 , priority=1000 , match=(ip4 && tcp.dst == 1000 && ip4.dst == 
> > 10.0.0.10), action=(drop;)
> > +  table=0 , priority=0    , match=(1), action=(output;)
> > +])
> > +
> > +as ovn-br ovn-brctl del-flows br1
> > +
> > +AT_CHECK([as ovn-br ovn-brctl dump-flows | uuidfilt], [0],
> > +  [dnl
> > +Bridge: br0 (<0>)
> > +  table=0 , priority=1000 , match=(ip4 && tcp), action=(drop;)
> > +  table=0 , priority=1000 , match=(ip4 && udp), action=(next;)
> > +  table=1 , priority=0    , match=(ip4 && udp), action=(output;)
> > +])
> > +
> > +lflow_uuid=$(as ovn-br ovn-brctl --bare --columns _uuid find logical_flow 
> > table_id=1)
> > +check as ovn-br ovn-brctl del-flow $lflow_uuid
> > +
> > +AT_CHECK([as ovn-br ovn-brctl dump-flows | uuidfilt], [0],
> > +  [dnl
> > +Bridge: br0 (<0>)
> > +  table=0 , priority=1000 , match=(ip4 && tcp), action=(drop;)
> > +  table=0 , priority=1000 , match=(ip4 && udp), action=(next;)
> > +])
> > +
> > +OVN_BR_CONTROLLER_STOP
> > +AT_CLEANUP
> > +
> > +AT_SETUP([ovn-br-controller - logical flows])
> > +OVN_BR_CONTROLLER_START
> > +
> > +check as ovn-br ovn-brctl add-br br0
> > +
> > +check ovs-vsctl add-br br0
> > +OVS_WAIT_UNTIL([test `ovs-ofctl dump-flows br0 | grep -v NXST_FLOW | wc 
> > -l` -eq 3])
> > +
> > +AT_CHECK_UNQUOTED([ovs-ofctl dump-flows br0 | sort | ofctl_strip_all], 
> > [0], [dnl
> > + priority=0 actions=NORMAL
> > + table=120, priority=0 actions=resubmit(,121)
> > + table=121, priority=0 actions=NORMAL
> > +NXST_FLOW reply:
> > +])
> > +
> > +check ovs-vsctl add-port br0 p1 -- set interface p1 ofport-request=2
> > +check ovs-vsctl add-port br0 p2 -- set interface p2 ofport-request=3
> > +OVS_WAIT_UNTIL([test `ovs-ofctl dump-flows br0 | grep -v NXST_FLOW | wc 
> > -l` -eq 7])
> > +
> > +AT_CHECK_UNQUOTED([ovs-ofctl dump-flows br0 | sort | ofctl_strip_all], 
> > [0], [dnl
> > + priority=0 actions=NORMAL
> > + priority=100,in_port=2 actions=load:0x2->NXM_NX_REG14[[]],resubmit(,8)
> > + priority=100,in_port=3 actions=load:0x3->NXM_NX_REG14[[]],resubmit(,8)
> > + table=120, priority=0 actions=resubmit(,121)
> > + table=121, priority=0 actions=NORMAL
> > + table=121, priority=100,reg15=0x2 actions=output:2
> > + table=121, priority=100,reg15=0x3 actions=output:3
> > +NXST_FLOW reply:
> > +])
> > +
> > +check as ovn-br ovn-brctl add-flow br0 0 1000 'inport == "p1"' "next;"
> > +check as ovn-br ovn-brctl add-flow br0 0 1000 'inport == "p2"' "drop;"
> > +check as ovn-br ovn-brctl add-flow br0 1 1000 'ip4 && tcp' "ip4.src <-> 
> > ip4.dst; tcp.dst = 8080; next;"
> > +check as ovn-br ovn-brctl add-flow br0 1 1000 'ip4' "next;"
> > +check as ovn-br ovn-brctl add-flow br0 2 1000 '1' "output;"
> > +
> > +OVS_WAIT_UNTIL([test `ovs-ofctl dump-flows br0 | grep -v NXST_FLOW | wc 
> > -l` -eq 12])
> > +
> > +AT_CHECK_UNQUOTED([ovs-ofctl dump-flows br0 | ofctl_strip_all], [0], [dnl
> > + priority=0 actions=NORMAL
> > + priority=100,in_port=2 actions=load:0x2->NXM_NX_REG14[[]],resubmit(,8)
> > + priority=100,in_port=3 actions=load:0x3->NXM_NX_REG14[[]],resubmit(,8)
> > + table=10, priority=1000 actions=resubmit(,120)
> > + table=120, priority=0 actions=resubmit(,121)
> > + table=121, priority=0 actions=NORMAL
> > + table=121, priority=100,reg15=0x2 actions=output:2
> > + table=121, priority=100,reg15=0x3 actions=output:3
> > + table=8, priority=1000,reg14=0x2 actions=resubmit(,9)
> > + table=8, priority=1000,reg14=0x3 actions=drop
> > + table=9, priority=1000,ip actions=resubmit(,10)
> > + table=9, priority=1000,tcp 
> > actions=push:NXM_OF_IP_DST[[]],push:NXM_OF_IP_SRC[[]],pop:NXM_OF_IP_DST[[]],pop:NXM_OF_IP_SRC[[]],mod_tp_dst:8080,resubmit(,10)
> > +NXST_FLOW reply:
> > +])
> > +
> > +check ovs-vsctl del-port p2
> > +OVS_WAIT_UNTIL([test `ovs-ofctl dump-flows br0 | grep -v NXST_FLOW | wc 
> > -l` -eq 9])
> > +
> > +AT_CHECK_UNQUOTED([ovs-ofctl dump-flows br0 | ofctl_strip_all], [0], [dnl
> > + priority=0 actions=NORMAL
> > + priority=100,in_port=2 actions=load:0x2->NXM_NX_REG14[[]],resubmit(,8)
> > + table=10, priority=1000 actions=resubmit(,120)
> > + table=120, priority=0 actions=resubmit(,121)
> > + table=121, priority=0 actions=NORMAL
> > + table=121, priority=100,reg15=0x2 actions=output:2
> > + table=8, priority=1000,reg14=0x2 actions=resubmit(,9)
> > + table=9, priority=1000,ip actions=resubmit(,10)
> > + table=9, priority=1000,tcp 
> > actions=push:NXM_OF_IP_DST[[]],push:NXM_OF_IP_SRC[[]],pop:NXM_OF_IP_DST[[]],pop:NXM_OF_IP_SRC[[]],mod_tp_dst:8080,resubmit(,10)
> > +NXST_FLOW reply:
> > +])
> > +
> > +check ovs-vsctl add-br br1
> > +check ovs-vsctl add-port br1 br1-p1 -- set interface br1-p1 
> > ofport-request=1
> > +check ovs-vsctl add-port br1 br1-p2 -- set interface br1-p2 
> > ofport-request=2
> > +
> > +OVS_WAIT_UNTIL([test `ovs-ofctl dump-flows br1 | grep -v NXST_FLOW | wc 
> > -l` -eq 1])
> > +
> > +AT_CHECK_UNQUOTED([ovs-ofctl dump-flows br1 | sort | ofctl_strip_all], 
> > [0], [dnl
> > + priority=0 actions=NORMAL
> > +NXST_FLOW reply:
> > +])
> > +
> > +br_id="4830e8c3-9b6b-48db-ba52-e030d9db7256"
> > +as ovn-br ovn-brctl --id=${br_id} create bridge name=br1
> > +as ovn-br ovn-brctl list bridge
> > +
> > +# check as ovn-br ovn-brctl add-br br1
> > +OVS_WAIT_UNTIL([test `ovs-ofctl dump-flows br1 | grep -v NXST_FLOW | wc 
> > -l` -eq 7])
> > +AT_CHECK_UNQUOTED([ovs-ofctl dump-flows br1 | sort | ofctl_strip_all], 
> > [0], [dnl
> > + priority=0 actions=NORMAL
> > + priority=100,in_port=1 actions=load:0x1->NXM_NX_REG14[[]],resubmit(,8)
> > + priority=100,in_port=2 actions=load:0x2->NXM_NX_REG14[[]],resubmit(,8)
> > + table=120, priority=0 actions=resubmit(,121)
> > + table=121, priority=0 actions=NORMAL
> > + table=121, priority=100,reg15=0x1 actions=output:1
> > + table=121, priority=100,reg15=0x2 actions=output:2
> > +NXST_FLOW reply:
> > +])
> > +
> > +check as ovn-br ovn-brctl add-flow br1 1 1000 "ip4" "ct_snat;"
> > +check as ovn-br ovn-brctl add-flow br1 2 1000 "ip4 && ct.new && ct.trk && 
> > ip4.src == 10.0.0.11" "ct_snat(100.64.0.11); next;"
> > +check as ovn-br ovn-brctl add-flow br1 3 1000 "inport == \"br1-p1\"" 
> > "outport = \"br1-p2\"; output;"
> > +check as ovn-br ovn-brctl add-flow br1 3 1000 "inport == \"br1-p2\"" 
> > "outport = \"br1-p1\"; output;"
> > +
> > +lflow_id="75bf46aa-4204-4e36-af23-6114f59e3fe8"
> > +
> > +as ovn-br ovn-brctl --id=${lflow_id} create logical_flow \
> > +match='"ip4 && tcp.src > 0 && tcp.src < 1000 && tcp.dst > 1000 && tcp.dst 
> > < 2000"' \
> > +actions="next;" bridge=${br_id} table_id=10 priority=1000
> > +
> > +OVS_WAIT_UNTIL([test `ovs-ofctl dump-flows br1 | grep -v NXST_FLOW | wc 
> > -l` -eq 35])
> > +
> > +AT_CHECK_UNQUOTED([ovs-ofctl dump-flows br1 | sort | ofctl_strip_all], 
> > [0], [dnl
> > + priority=0 actions=NORMAL
> > + priority=100,in_port=1 actions=load:0x1->NXM_NX_REG14[[]],resubmit(,8)
> > + priority=100,in_port=2 actions=load:0x2->NXM_NX_REG14[[]],resubmit(,8)
> > + table=10, priority=1000,ct_state=+new+trk,ip,nw_src=10.0.0.11 
> > actions=ct(commit,table=11,zone=NXM_NX_REG12[[0..15]],nat(src=100.64.0.11)),resubmit(,11)
> > + table=11, priority=1000,reg14=0x1 
> > actions=load:0x2->NXM_NX_REG15[[]],resubmit(,120)
> > + table=11, priority=1000,reg14=0x2 
> > actions=load:0x1->NXM_NX_REG15[[]],resubmit(,120)
> > + table=120, priority=0 actions=resubmit(,121)
> > + table=121, priority=0 actions=NORMAL
> > + table=121, priority=100,reg15=0x1 actions=output:1
> > + table=121, priority=100,reg15=0x2 actions=output:2
> > + table=18, priority=1000,conj_id=1644032429,tcp actions=resubmit(,19)
> > + table=18, priority=1000,tcp,tp_dst=0x3ea/0xfffe 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x3ec/0xfffc 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x3f0/0xfff0 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x400/0xfe00 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x600/0xff00 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x700/0xff80 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x780/0xffc0 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x7c0/0xfff0 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=1001 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_src=0x1/0xfe01 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x10/0xfe10 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x100/0xff00 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x2/0xfe02 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x20/0xfe20 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x200/0xff00 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x300/0xff80 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x380/0xffc0 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x3c0/0xffe0 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x3e0/0xfff8 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x4/0xfe04 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x40/0xfe40 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x8/0xfe08 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x80/0xfe80 
> > actions=conjunction(1644032429,2/2)
> > + table=9, priority=1000,ip 
> > actions=ct(table=10,zone=NXM_NX_REG12[[0..15]],nat)
> > +NXST_FLOW reply:
> > +])
> > +
> > +as ovn-br ovn-brctl set logical_flow ${lflow_id} match='"ip4 && sctp"'
> > +OVS_WAIT_UNTIL([test `ovs-ofctl dump-flows br1 | grep -v NXST_FLOW | wc 
> > -l` -eq 12])
> > +
> > +AT_CHECK_UNQUOTED([ovs-ofctl dump-flows br1 | sort | ofctl_strip_all], 
> > [0], [dnl
> > + priority=0 actions=NORMAL
> > + priority=100,in_port=1 actions=load:0x1->NXM_NX_REG14[[]],resubmit(,8)
> > + priority=100,in_port=2 actions=load:0x2->NXM_NX_REG14[[]],resubmit(,8)
> > + table=10, priority=1000,ct_state=+new+trk,ip,nw_src=10.0.0.11 
> > actions=ct(commit,table=11,zone=NXM_NX_REG12[[0..15]],nat(src=100.64.0.11)),resubmit(,11)
> > + table=11, priority=1000,reg14=0x1 
> > actions=load:0x2->NXM_NX_REG15[[]],resubmit(,120)
> > + table=11, priority=1000,reg14=0x2 
> > actions=load:0x1->NXM_NX_REG15[[]],resubmit(,120)
> > + table=120, priority=0 actions=resubmit(,121)
> > + table=121, priority=0 actions=NORMAL
> > + table=121, priority=100,reg15=0x1 actions=output:1
> > + table=121, priority=100,reg15=0x2 actions=output:2
> > + table=18, priority=1000,sctp actions=resubmit(,19)
> > + table=9, priority=1000,ip 
> > actions=ct(table=10,zone=NXM_NX_REG12[[0..15]],nat)
> > +NXST_FLOW reply:
> > +])
> > +
> > +# Make sure that the same conj_id is used when the lflow is updated with 
> > the conj match.
> > +as ovn-br ovn-brctl set logical_flow ${lflow_id} \
> > +match='"ip4 && tcp.src > 0 && tcp.src < 1000 && tcp.dst > 1000 && tcp.dst 
> > < 2000"'
> > +OVS_WAIT_UNTIL([test `ovs-ofctl dump-flows br1 | grep -v NXST_FLOW | wc 
> > -l` -eq 35])
> > +
> > +AT_CHECK_UNQUOTED([ovs-ofctl dump-flows br1 | sort | ofctl_strip_all], 
> > [0], [dnl
> > + priority=0 actions=NORMAL
> > + priority=100,in_port=1 actions=load:0x1->NXM_NX_REG14[[]],resubmit(,8)
> > + priority=100,in_port=2 actions=load:0x2->NXM_NX_REG14[[]],resubmit(,8)
> > + table=10, priority=1000,ct_state=+new+trk,ip,nw_src=10.0.0.11 
> > actions=ct(commit,table=11,zone=NXM_NX_REG12[[0..15]],nat(src=100.64.0.11)),resubmit(,11)
> > + table=11, priority=1000,reg14=0x1 
> > actions=load:0x2->NXM_NX_REG15[[]],resubmit(,120)
> > + table=11, priority=1000,reg14=0x2 
> > actions=load:0x1->NXM_NX_REG15[[]],resubmit(,120)
> > + table=120, priority=0 actions=resubmit(,121)
> > + table=121, priority=0 actions=NORMAL
> > + table=121, priority=100,reg15=0x1 actions=output:1
> > + table=121, priority=100,reg15=0x2 actions=output:2
> > + table=18, priority=1000,conj_id=1644032429,tcp actions=resubmit(,19)
> > + table=18, priority=1000,tcp,tp_dst=0x3ea/0xfffe 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x3ec/0xfffc 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x3f0/0xfff0 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x400/0xfe00 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x600/0xff00 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x700/0xff80 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x780/0xffc0 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=0x7c0/0xfff0 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_dst=1001 
> > actions=conjunction(1644032429,1/2)
> > + table=18, priority=1000,tcp,tp_src=0x1/0xfe01 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x10/0xfe10 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x100/0xff00 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x2/0xfe02 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x20/0xfe20 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x200/0xff00 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x300/0xff80 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x380/0xffc0 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x3c0/0xffe0 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x3e0/0xfff8 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x4/0xfe04 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x40/0xfe40 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x8/0xfe08 
> > actions=conjunction(1644032429,2/2)
> > + table=18, priority=1000,tcp,tp_src=0x80/0xfe80 
> > actions=conjunction(1644032429,2/2)
> > + table=9, priority=1000,ip 
> > actions=ct(table=10,zone=NXM_NX_REG12[[0..15]],nat)
> > +NXST_FLOW reply:
> > +])
> > +
> > +OVN_BR_CONTROLLER_STOP
> > +AT_CLEANUP
> > diff --git a/tests/testsuite.at b/tests/testsuite.at
> > index 8e60bf82e1..5f5eabb42a 100644
> > --- a/tests/testsuite.at
> > +++ b/tests/testsuite.at
> > @@ -41,3 +41,4 @@ m4_include([tests/checkpatch.at])
> >  m4_include([tests/ovn-ipsec.at])
> >  m4_include([tests/ovn-vif-plug.at])
> >  m4_include([tests/ovn-util.at])
> > +m4_include([tests/ovn-br-controller.at])
> > --
> > 2.51.0
> >
> > _______________________________________________
> > dev mailing list
> > [email protected]
> > https://mail.openvswitch.org/mailman/listinfo/ovs-dev
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