[ovs-dev] [patch_v8] ovn: Add datapaths of interest filtering.
Liran Schour
LIRANS at il.ibm.com
Tue Nov 29 12:10:35 UTC 2016
Ben Pfaff <blp at ovn.org> wrote on 29/11/2016 12:51:51 AM:
> I hope that this version is ready to go in. Liran, are you happy with
> this version?
>
I did some short evaluation and got the following results:
Simulate 50 hosts, each host serves 20 logical ports, each logical network
is spread over 6 of the 50 hosts.
Darrell patch:
--------------
Host 1 # flows 1504
Host 2 # flows 1626
Host 3 # flows 1443
...
Logical flows = 8016
Elapsed time 207,990ms
total of 1002 (in 208ms per port)
Ports created and bound in 5,648,773,788,428 cycles
1% south 69,936,025,644
1% north 77,863,484,163
97% clients 5,500,974,278,621
Conditional monitor V16 patch:
------------------------------
Host 1 # flows 1358
Host 2 # flows 1482
Host 3 # flows 1296
...
Logical flows = 8016
Elapsed time 207,998ms
total of 1002 (in 208ms per port)
Ports created and bound in 1,216,848,309,516 cycles
2% south 30,653,838,360
3% north 42,543,336,355
93% clients 1,143,651,134,801
You can see that this patch significantly degrades the overhead of
computation comparing to my origin patch (rebased version).
An obvious difference is that Darrell's patch has conditions only on the
Logical_Flow table and the origin patch did that on Port_Binding,
Logical_Flow, Multicast_Group and MAC_Binding tables.
I can resubmit my rebased patch again and Darell can base his changes on
top of it or just investigate the problem.
The code is here: https://github.com/liranschour/ovs Branch:
monitor_cond_ovn_v16
Thanks,
- Liran
> On Sun, Nov 27, 2016 at 01:08:59PM -0800, Darrell Ball wrote:
> > This patch adds datapaths of interest support where only datapaths of
> > local interest are monitored by the ovn-controller ovsdb client. The
> > idea is to do a flood fill in ovn-controller of datapath associations
> > calculated by northd. A new column is added to the SB database
> > datapath_binding table - related_datapaths to facilitate this so all
> > datapaths associations are known quickly in ovn-controller. This
> > allows monitoring to adapt quickly with a single new monitor setting
> > for all datapaths of interest locally.
> >
> > To reduce risk and minimize latency on network churn, only logical
> > flows are conditionally monitored for now. This should provide
> > the bulk of the benefit. This will be re-evaluated later to
> > possibly add additional conditional monitoring such as for
> > logical ports.
> >
> > Liran Schour contributed enhancements to the conditional
> > monitoring granularity in ovs and also submitted patches
> > for ovn usage of conditional monitoring which aided this patch
> > though sharing of concepts through code review work.
> >
> > Ben Pfaff suggested that northd could be used to pre-populate
> > related datapaths for ovn-controller to use. That idea is
> > used as part of this patch.
> >
> > CC: Ben Pfaff <blp at ovn.org>
> > CC: Liran Schour <LIRANS at il.ibm.com>
> > Signed-off-by: Darrell Ball <dlu998 at gmail.com>
> > ---
> >
> > v7->v8: Start wth logical flow conditional monitoring off.
> > Remove deprecated code.
> > Recover SB DB version number change.
> > Change test to be more definitive.
> >
> > v6->v7: Rebase
> >
> > v5->v6: Rebase; fix stale handling.
> >
> > v4->v5: Correct cleanup of monitors.
> > Fix warning.
> >
> > v3->v4: Refactor after incremental processing backout.
> > Limit filtering to logical flows to limit risk.
> >
> > v2->v3: Line length violation fixups :/
> >
> > v1->v2: Added logical port removal monitoring handling, factoring
> > in recent changes for incremental processing. Added some
> > comments in the code regarding initial conditions for
> > database conditional monitoring.
> >
> > ovn/controller/binding.c | 10 +++--
> > ovn/controller/lflow.c | 5 +++
> > ovn/controller/ovn-controller.c | 92 ++++++++++++++++++++++++++++
> +++++++++++++
> > ovn/controller/ovn-controller.h | 3 ++
> > ovn/controller/patch.c | 6 ++-
> > ovn/northd/ovn-northd.c | 76
++++++++++++++++++++++++++++++++++
> > ovn/ovn-sb.ovsschema | 11 +++--
> > ovn/ovn-sb.xml | 9 ++++
> > tests/ovn.at | 8 ++++
> > 9 files changed, 211 insertions(+), 9 deletions(-)
> >
> > diff --git a/ovn/controller/binding.c b/ovn/controller/binding.c
> > index d7b175e..2aff69a 100644
> > --- a/ovn/controller/binding.c
> > +++ b/ovn/controller/binding.c
> > @@ -106,7 +106,8 @@ get_local_iface_ids(const struct ovsrec_bridge
*br_int,
> >
> > static void
> > add_local_datapath(struct hmap *local_datapaths,
> > - const struct sbrec_port_binding *binding_rec)
> > + const struct sbrec_port_binding *binding_rec,
> > + const struct controller_ctx *ctx)
> > {
> > if (get_local_datapath(local_datapaths,
> > binding_rec->datapath->tunnel_key)) {
> > @@ -118,6 +119,7 @@ add_local_datapath(struct hmap *local_datapaths,
> > memcpy(&ld->uuid, &binding_rec->header_.uuid, sizeof ld->uuid);
> > hmap_insert(local_datapaths, &ld->hmap_node,
> > binding_rec->datapath->tunnel_key);
> > + do_datapath_flood_fill(ctx, binding_rec->datapath);
> > }
> >
> > static void
> > @@ -295,7 +297,7 @@ consider_local_datapath(struct controller_ctx
*ctx,
> > /* Add child logical port to the set of all local ports.
*/
> > sset_add(all_lports, binding_rec->logical_port);
> > }
> > - add_local_datapath(local_datapaths, binding_rec);
> > + add_local_datapath(local_datapaths, binding_rec, ctx);
> > if (iface_rec && qos_map && ctx->ovs_idl_txn) {
> > get_qos_params(binding_rec, qos_map);
> > }
> > @@ -330,7 +332,7 @@ consider_local_datapath(struct controller_ctx
*ctx,
> > }
> >
> > sset_add(all_lports, binding_rec->logical_port);
> > - add_local_datapath(local_datapaths, binding_rec);
> > + add_local_datapath(local_datapaths, binding_rec, ctx);
> > if (binding_rec->chassis == chassis_rec) {
> > return;
> > }
> > @@ -344,7 +346,7 @@ consider_local_datapath(struct controller_ctx
*ctx,
> > const char *chassis = smap_get(&binding_rec->options,
> > "l3gateway-chassis");
> > if (!strcmp(chassis, chassis_rec->name) &&
ctx->ovnsb_idl_txn) {
> > - add_local_datapath(local_datapaths, binding_rec);
> > + add_local_datapath(local_datapaths, binding_rec, ctx);
> > }
> > } else if (chassis_rec && binding_rec->chassis == chassis_rec) {
> > if (ctx->ovnsb_idl_txn) {
> > diff --git a/ovn/controller/lflow.c b/ovn/controller/lflow.c
> > index 4e67365..765eae4 100644
> > --- a/ovn/controller/lflow.c
> > +++ b/ovn/controller/lflow.c
> > @@ -167,6 +167,11 @@ consider_logical_flow(const struct lport_index
*lports,
> > if (!ldp) {
> > return;
> > }
> > +
> > + VLOG_DBG("consider logical flow: tunnel_key %lu "
> > + "\"match\" \"%s\", \"actions\" \"%s\"",
> > + ldp->tunnel_key, lflow->match, lflow->actions);
> > +
> > if (is_switch(ldp)) {
> > /* For a logical switch datapath, local_datapaths tells us if
there
> > * are any local ports for this datapath. If not, we can
skip
> > diff --git a/ovn/controller/ovn-controller.c b/ovn/controller/ovn-
> controller.c
> > index 52eb491..b3ae037 100644
> > --- a/ovn/controller/ovn-controller.c
> > +++ b/ovn/controller/ovn-controller.c
> > @@ -69,6 +69,14 @@ OVS_NO_RETURN static void usage(void);
> >
> > static char *ovs_remote;
> >
> > +struct dp_of_interest_node {
> > + struct hmap_node hmap_node;
> > + const struct sbrec_datapath_binding *sb_db;
> > + bool stale;
> > +};
> > +
> > +static struct hmap dps_of_interest =
HMAP_INITIALIZER(&dps_of_interest);
> > +
> > struct local_datapath *
> > get_local_datapath(const struct hmap *local_datapaths, uint32_t
tunnel_key)
> > {
> > @@ -128,6 +136,69 @@ get_bridge(struct ovsdb_idl *ovs_idl, const
> char *br_name)
> > return NULL;
> > }
> >
> > +static bool
> > +add_datapath_of_interest(const struct controller_ctx *ctx,
> > + const struct sbrec_datapath_binding *dp)
> > +{
> > + struct dp_of_interest_node *node;
> > + HMAP_FOR_EACH_WITH_HASH (node, hmap_node,
uuid_hash(&dp->header_.uuid),
> > + &dps_of_interest) {
> > + if (uuid_equals(&node->sb_db->header_.uuid,
&dp->header_.uuid)) {
> > + node->stale = false;
> > + return false;
> > + }
> > + }
> > +
> > + sbrec_logical_flow_add_clause_logical_datapath(ctx->ovnsb_idl,
> > + OVSDB_F_EQ,
> > + &dp->header_.uuid);
> > + node = xzalloc(sizeof *node);
> > + hmap_insert(&dps_of_interest, &node->hmap_node,
> > + uuid_hash(&dp->header_.uuid));
> > + node->sb_db = dp;
> > + return true;
> > +}
> > +
> > +void
> > +do_datapath_flood_fill(const struct controller_ctx *ctx,
> > + const struct sbrec_datapath_binding *dp_start)
> > +{
> > + struct interest_dps_list_elem {
> > + struct ovs_list list_node;
> > + const struct sbrec_datapath_binding * dp;
> > + };
> > +
> > + struct ovs_list interest_datapaths;
> > + ovs_list_init(&interest_datapaths);
> > +
> > + struct interest_dps_list_elem *dp_list_elem =
> > + xzalloc(sizeof *dp_list_elem);
> > + dp_list_elem->dp = dp_start;
> > + ovs_list_push_back(&interest_datapaths,
&dp_list_elem->list_node);
> > +
> > + while (!ovs_list_is_empty(&interest_datapaths)) {
> > +
> > + struct ovs_list *list_node_ptr =
> > + ovs_list_pop_front(&interest_datapaths);
> > + dp_list_elem = CONTAINER_OF(list_node_ptr,
> > + struct interest_dps_list_elem, list_node);
> > +
> > + size_t num_related_datapaths =
dp_list_elem->dp->n_related_datapaths;
> > + struct sbrec_datapath_binding **related_datapaths =
> > + dp_list_elem->dp->related_datapaths;
> > + if (!add_datapath_of_interest(ctx, dp_list_elem->dp)) {
> > + free(dp_list_elem);
> > + continue;
> > + }
> > + free(dp_list_elem);
> > + for (int i = 0; i < num_related_datapaths; i++) {
> > + dp_list_elem = xzalloc(sizeof *dp_list_elem);
> > + dp_list_elem->dp = related_datapaths[i];
> > + ovs_list_push_back(&interest_datapaths,
> &dp_list_elem->list_node);
> > + }
> > + }
> > +}
> > +
> > static const struct ovsrec_bridge *
> > create_br_int(struct controller_ctx *ctx,
> > const struct ovsrec_open_vswitch *cfg,
> > @@ -465,6 +536,10 @@ main(int argc, char *argv[])
> > ovsdb_idl_create(ovnsb_remote, &sbrec_idl_class, true,
true));
> > ovsdb_idl_omit_alert(ovnsb_idl_loop.idl,
&sbrec_chassis_col_nb_cfg);
> >
> > + /* Start with suppressing all logical flows and then later
> request those
> > + * that are specifically needed. */
> > + sbrec_logical_flow_add_clause_false(ovnsb_idl_loop.idl);
> > +
> > /* Track the southbound idl. */
> > ovsdb_idl_track_add_all(ovnsb_idl_loop.idl);
> >
> > @@ -509,6 +584,12 @@ main(int argc, char *argv[])
> > struct hmap patched_datapaths = HMAP_INITIALIZER
> (&patched_datapaths);
> > struct sset all_lports = SSET_INITIALIZER(&all_lports);
> >
> > + struct dp_of_interest_node *dp_cur_node, *dp_next_node;
> > + HMAP_FOR_EACH_SAFE (dp_cur_node, dp_next_node, hmap_node,
> > + &dps_of_interest) {
> > + dp_cur_node->stale = true;
> > + }
> > +
> > const struct ovsrec_bridge *br_int = get_br_int(&ctx);
> > const char *chassis_id = get_chassis_id(ctx.ovs_idl);
> >
> > @@ -559,6 +640,17 @@ main(int argc, char *argv[])
> > }
> > mcgroup_index_destroy(&mcgroups);
> > lport_index_destroy(&lports);
> > +
> > + HMAP_FOR_EACH_SAFE (dp_cur_node, dp_next_node, hmap_node,
> > + &dps_of_interest) {
> > + if(dp_cur_node->stale == true) {
> > + sbrec_logical_flow_remove_clause_logical_datapath(
> > + ctx.ovnsb_idl, OVSDB_F_EQ,
> > + &dp_cur_node->sb_db->header_.uuid);
> > + hmap_remove(&dps_of_interest,
&dp_cur_node->hmap_node);
> > + free(dp_cur_node);
> > + }
> > + }
> > }
> >
> > sset_destroy(&all_lports);
> > diff --git a/ovn/controller/ovn-controller.h b/ovn/controller/ovn-
> controller.h
> > index 4dcf4e5..a474c45 100644
> > --- a/ovn/controller/ovn-controller.h
> > +++ b/ovn/controller/ovn-controller.h
> > @@ -81,6 +81,9 @@ const struct ovsrec_bridge *get_bridge(struct
ovsdb_idl *,
> > const struct sbrec_chassis *get_chassis(struct ovsdb_idl *,
> > const char *chassis_id);
> >
> > +void do_datapath_flood_fill(const struct controller_ctx *,
> > + const struct sbrec_datapath_binding *);
> > +
> > /* Must be a bit-field ordered from most-preferred (higher number) to
> > * least-preferred (lower number). */
> > enum chassis_tunnel_type {
> > diff --git a/ovn/controller/patch.c b/ovn/controller/patch.c
> > index c9a5dd9..2af4436 100644
> > --- a/ovn/controller/patch.c
> > +++ b/ovn/controller/patch.c
> > @@ -252,7 +252,8 @@ add_bridge_mappings(struct controller_ctx *ctx,
> >
> > static void
> > add_patched_datapath(struct hmap *patched_datapaths,
> > - const struct sbrec_port_binding
> *binding_rec, bool local)
> > + const struct sbrec_port_binding
> *binding_rec, bool local,
> > + struct controller_ctx *ctx)
> > {
> > struct patched_datapath *pd =
get_patched_datapath(patched_datapaths,
> > binding_rec->datapath->tunnel_key);
> > @@ -269,6 +270,7 @@ add_patched_datapath(struct hmap
*patched_datapaths,
> > /* stale is set to false. */
> > hmap_insert(patched_datapaths, &pd->hmap_node,
> > binding_rec->datapath->tunnel_key);
> > + do_datapath_flood_fill(ctx, binding_rec->datapath);
> > }
> >
> > static void
> > @@ -362,7 +364,7 @@ add_logical_patch_ports(struct controller_ctx
*ctx,
> > existing_ports);
> > free(dst_name);
> > free(src_name);
> > - add_patched_datapath(patched_datapaths, binding,
local_port);
> > + add_patched_datapath(patched_datapaths, binding,
> local_port, ctx);
> > if (local_port) {
> > if (binding->chassis != chassis_rec &&
> ctx->ovnsb_idl_txn) {
> > sbrec_port_binding_set_chassis(binding,
chassis_rec);
> > diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c
> > index 437da9f..b714799 100644
> > --- a/ovn/northd/ovn-northd.c
> > +++ b/ovn/northd/ovn-northd.c
> > @@ -231,6 +231,42 @@ struct tnlid_node {
> > uint32_t tnlid;
> > };
> >
> > +struct related_datapath_node {
> > + struct hmap_node hmap_node;
> > + const struct sbrec_datapath_binding *sb_db;
> > +};
> > +
> > +static void
> > +add_related_datapath(struct hmap *related_datapaths,
> > + const struct sbrec_datapath_binding *sb,
> > + size_t *n_related_datapaths)
> > +{
> > + struct related_datapath_node *node;
> > + HMAP_FOR_EACH_WITH_HASH (node, hmap_node,
> > + uuid_hash(&sb->header_.uuid),
> > + related_datapaths) {
> > + if (uuid_equals(&sb->header_.uuid,
&node->sb_db->header_.uuid)) {
> > + return;
> > + }
> > + }
> > +
> > + node = xzalloc(sizeof *node);
> > + hmap_insert(related_datapaths, &node->hmap_node,
> > + uuid_hash(&sb->header_.uuid));
> > + node->sb_db = sb;
> > + (*n_related_datapaths)++;
> > +}
> > +
> > +static void
> > +destroy_related_datapaths(struct hmap *related_datapaths)
> > +{
> > + struct related_datapath_node *node;
> > + HMAP_FOR_EACH_POP (node, hmap_node, related_datapaths) {
> > + free(node);
> > + }
> > + hmap_destroy(related_datapaths);
> > +}
> > +
> > static void
> > destroy_tnlids(struct hmap *tnlids)
> > {
> > @@ -376,6 +412,8 @@ struct ovn_datapath {
> > size_t n_router_ports;
> >
> > struct hmap port_tnlids;
> > + struct hmap related_datapaths;
> > + size_t n_related_datapaths;
> > uint32_t port_key_hint;
> >
> > bool has_unknown;
> > @@ -426,6 +464,7 @@ ovn_datapath_create(struct hmap *datapaths,
> const struct uuid *key,
> > od->nbr = nbr;
> > hmap_init(&od->port_tnlids);
> > hmap_init(&od->ipam);
> > + hmap_init(&od->related_datapaths);
> > od->port_key_hint = 0;
> > hmap_insert(datapaths, &od->key_node, uuid_hash(&od->key));
> > return od;
> > @@ -441,6 +480,7 @@ ovn_datapath_destroy(struct hmap *datapaths,
> struct ovn_datapath *od)
> > hmap_remove(datapaths, &od->key_node);
> > destroy_tnlids(&od->port_tnlids);
> > destroy_ipam(&od->ipam);
> > + destroy_related_datapaths(&od->related_datapaths);
> > free(od->router_ports);
> > free(od);
> > }
> > @@ -624,6 +664,28 @@ build_datapaths(struct northd_context *ctx,
> struct hmap *datapaths)
> > smap_destroy(&ids);
> >
> > sbrec_datapath_binding_set_tunnel_key(od->sb,
tunnel_key);
> > +
> > + struct sbrec_datapath_binding **sb_related_datapaths
> > + = xmalloc(sizeof(*sb_related_datapaths) *
> od->n_related_datapaths);
> > + int rdi = 0;
> > + struct related_datapath_node *related_datapath;
> > + HMAP_FOR_EACH (related_datapath, hmap_node,
> > + &od->related_datapaths) {
> > + if (rdi >= od->n_related_datapaths) {
> > + static struct vlog_rate_limit rl
> > + = VLOG_RATE_LIMIT_INIT(5, 1);
> > + VLOG_ERR_RL(&rl, "related datapaths accounting
error"
> > + UUID_FMT, UUID_ARGS(&od->key));
> > + break;
> > + }
> > + sb_related_datapaths[rdi] = CONST_CAST(
> > + struct sbrec_datapath_binding *,
> related_datapath->sb_db);
> > + rdi++;
> > + }
> > + sbrec_datapath_binding_set_related_datapaths(od->sb,
> > + sb_related_datapaths, od->n_related_datapaths);
> > + free(sb_related_datapaths);
> > +
> > }
> > destroy_tnlids(&dp_tnlids);
> > }
> > @@ -1359,6 +1421,12 @@ ovn_port_update_sbrec(const struct ovn_port
*op,
> > sbrec_port_binding_set_type(op->sb, "patch");
> > }
> >
> > + if (op->peer && op->peer->od && op->peer->od->sb) {
> > + add_related_datapath(&op->od->related_datapaths,
> > + op->peer->od->sb,
> > + &op->od->n_related_datapaths);
> > + }
> > +
> > const char *peer = op->peer ? op->peer->key : "<error>";
> > struct smap new;
> > smap_init(&new);
> > @@ -1411,6 +1479,12 @@ ovn_port_update_sbrec(const struct ovn_port
*op,
> > sbrec_port_binding_set_type(op->sb, "patch");
> > }
> >
> > + if (op->peer && op->peer->od && op->peer->od->sb) {
> > + add_related_datapath(&op->od->related_datapaths,
> > + op->peer->od->sb,
> > + &op->od->n_related_datapaths);
> > + }
> > +
> > const char *router_port =
smap_get_def(&op->nbsp->options,
> > "router-port",
> "<error>");
> > struct smap new;
> > @@ -4825,6 +4899,8 @@ main(int argc, char *argv[])
> > add_column_noalert(ovnsb_idl_loop.idl,
> > &sbrec_datapath_binding_col_tunnel_key);
> > add_column_noalert(ovnsb_idl_loop.idl,
> > + &sbrec_datapath_binding_col_related_datapaths);
> > + add_column_noalert(ovnsb_idl_loop.idl,
> > &sbrec_datapath_binding_col_external_ids);
> >
> > ovsdb_idl_add_table(ovnsb_idl_loop.idl,
&sbrec_table_port_binding);
> > diff --git a/ovn/ovn-sb.ovsschema b/ovn/ovn-sb.ovsschema
> > index 89342fe..51c222d 100644
> > --- a/ovn/ovn-sb.ovsschema
> > +++ b/ovn/ovn-sb.ovsschema
> > @@ -1,7 +1,7 @@
> > {
> > "name": "OVN_Southbound",
> > - "version": "1.9.0",
> > - "cksum": "239060528 9012",
> > + "version": "1.10.0",
> > + "cksum": "1139190282 9320",
> > "tables": {
> > "SB_Global": {
> > "columns": {
> > @@ -93,7 +93,12 @@
> > "maxInteger": 16777215}}},
> > "external_ids": {
> > "type": {"key": "string", "value": "string",
> > - "min": 0, "max": "unlimited"}}},
> > + "min": 0, "max": "unlimited"}},
> > + "related_datapaths": {"type": {"key": {"type":
"uuid",
> > + "refTable": "Datapath_Binding",
> > + "refType": "weak"},
> > + "min": 0,
> > + "max": "unlimited"}}},
> > "indexes": [["tunnel_key"]],
> > "isRoot": true},
> > "Port_Binding": {
> > diff --git a/ovn/ovn-sb.xml b/ovn/ovn-sb.xml
> > index 65191ed..c20861f 100644
> > --- a/ovn/ovn-sb.xml
> > +++ b/ovn/ovn-sb.xml
> > @@ -1556,6 +1556,15 @@ tcp.flags = RST;
> > constructed for each supported encapsulation.
> > </column>
> >
> > + <column name="related_datapaths">
> > + The related_datapaths column is used to keep track of
whichdatapaths
> > + are connected to each other. This is leveraged in
ovn-controller to
> > + do a flood fill from each local logical switch to determine the
full
> > + set of datapaths needed on a given ovn-controller. This set
of
> > + datapaths can be used to determine which logical ports and
logical
> > + flows an ovn-controller should monitor.
> > + </column>
> > +
> > <group title="OVN_Northbound Relationship">
> > <p>
> > Each row in <ref table="Datapath_Binding"/> is associatedwith
some
> > diff --git a/tests/ovn.at b/tests/ovn.at
> > index 69f5277..04bc3da 100644
> > --- a/tests/ovn.at
> > +++ b/tests/ovn.at
> > @@ -4079,6 +4079,7 @@ ovs-vsctl -- add-port br-int hv1-vif1 -- \
> > options:tx_pcap=hv1/vif1-tx.pcap \
> > options:rxq_pcap=hv1/vif1-rx.pcap \
> > ofport-request=1
> > +ovs-appctl -t ovn-controller vlog/set ANY:file:DBG
> >
> >
> > sim_add hv2
> > @@ -4090,6 +4091,7 @@ ovs-vsctl -- add-port br-int hv2-vif1 -- \
> > options:tx_pcap=hv2/vif1-tx.pcap \
> > options:rxq_pcap=hv2/vif1-rx.pcap \
> > ofport-request=1
> > +ovs-appctl -t ovn-controller vlog/set ANY:file:DBG
> >
> > # Pre-populate the hypervisors' ARP tables so that we don't lose any
> > # packets for ARP resolution (native tunneling doesn't queue packets
> > @@ -4195,6 +4197,12 @@ as hv2 ovs-ofctl show br-int
> > as hv2 ovs-ofctl dump-flows br-int
> > echo "----------------------------"
> >
> > +# tunnel key 2 represents the gateway router and the associated
> > +# logical flows should only be on hv2 not hv1 when conditional
> > +# monitoring of flows is being used.
> > +AT_CHECK([cat hv2/ovn-controller.log | grep 'tunnel_key 2'], [0],
> [ignore-nolog])
> > +AT_CHECK([cat hv1/ovn-controller.log | grep 'tunnel_key 2'], [1],
> [ignore-nolog])
> > +
> > echo $expected > expected
> > OVN_CHECK_PACKETS([hv2/vif1-tx.pcap], [expected])
> >
> > --
> > 1.9.1
> >
>
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