On Tue, Jul 23, 2024 at 12:41 PM Numan Siddique <num...@ovn.org> wrote:
>
> On Tue, Jul 16, 2024 at 9:45 AM Jacob Tanenbaum <jtane...@redhat.com> wrote:
> >
> > Created a new column in the southbound database to hardcode a human readable
> > description for flows. This first use is describing why the flow is
> > dropping packets.
> > The new column is called flow_desc and will create southbound database
> > entries like this
> >
> > _uuid : 20f1897b-477e-47ae-a32c-c546d83ec097
> > actions :
> > "sample(probability=65535,collector_set=123,obs_domain=1,obs_point=$cookie);
> > /* drop */"
> > controller_meter : []
> > external_ids : {source="northd.c:8721", stage-name=ls_in_l2_unknown}
> > flow_desc : "No L2 destination"
> > logical_datapath : []
> > logical_dp_group : ee3c3db5-98a2-4f34-8a84-409deae140a7
> > match : "outport == \"none\""
> > pipeline : ingress
> > priority : 50
> > table_id : 27
> > tags : {}
> > hash : 0
> >
> > future work includes entering more flow_desc for more flows and adding
> > flow_desc to the actions as a comment.
> >
> > Signed-off-by: Jacob Tanenbaum <jtane...@redhat.com>
> > Suggested-by: Dumitru Ceara <dce...@redhat.com>
> > Reported-at: https://issues.redhat.com/browse/FDP-307
> >
>
> Hi Jacob,
>
> Thanks for the patch.
>
> I've a question. Do you have a specific reason to add a string wrapper ?
> Looks to me, you can use "const char *flow_desc" in the "struct
> ovn_lflow". Is it because in the future, to add
> dynamic strings ?
>
> I'd suggest just use "const char *" for now and use "struct ds" in the
> future patches if we need to add memory allocated
> strings ? What do you think ?
>
> Otherwise the patch LGTM.
Also there are a few typos.
In the commit message - s/respresntations/representations
And a few below.
>
> Thanks
> Numan
>
> > ---
> >
> > v1: initial version
> > v2: correct commit message
> > make the flow_desc a char*
> > correct a typo in the ovn-sb.xml
> > correct the test
> > v3: rebase issue with NEWS file
> > v4: remove options:debug_drop_domain_id="1" from testing as we
> > do not depend on it
> > v5: introduce string wrapper
> > increment ovs-sb.ovsschema version
> > correct the testing
> > added descriptions to more dropped packets
> > v6: v5 was not the correct branch, this is...
> > added descriptions to more dropped packets
> > changed the names of the macros to be more descriptive
> > ---
> > NEWS | 2 ++
> > lib/ovn-util.h | 26 +++++++++++++++++++++++
> > northd/lflow-mgr.c | 25 +++++++++++++++--------
> > northd/lflow-mgr.h | 27 +++++++++++++++++++-----
> > northd/northd.c | 50 ++++++++++++++++++++++++---------------------
> > ovn-sb.ovsschema | 8 +++++---
> > ovn-sb.xml | 5 +++++
> > tests/ovn-northd.at | 15 ++++++++++++++
> > 8 files changed, 119 insertions(+), 39 deletions(-)
> >
> > diff --git a/NEWS b/NEWS
> > index 3e392ff08..0039b04be 100644
> > --- a/NEWS
> > +++ b/NEWS
> > @@ -38,6 +38,8 @@ Post v24.03.0
> > ability to disable "VXLAN mode" to extend available tunnel IDs space
> > for
> > datapaths from 4095 to 16711680. For more details see man ovn-nb(5)
> > for
> > mentioned option.
> > + - Added a new column in the southbound database "flow_desc" to provide
> > + human readable context to flows.
> >
> > OVN v24.03.0 - 01 Mar 2024
> > --------------------------
> > diff --git a/lib/ovn-util.h b/lib/ovn-util.h
> > index f75b821b6..2da5cd086 100644
> > --- a/lib/ovn-util.h
> > +++ b/lib/ovn-util.h
> > @@ -466,6 +466,32 @@ void sorted_array_apply_diff(const struct sorted_array
> > *a1,
> > bool add),
> > const void *arg);
> >
> > +/* A wrapper that holds strings */
> > +struct string_wrapper
> > +{
> > + char *str;
> > + bool owns_string;
> > +};
> > +
> > +#define EMPTY_STRING_WRAPPER (struct string_wrapper){NULL, false}
> > +
> > +static inline struct string_wrapper
> > +string_wrapper_create(char *str, bool take_ownership)
> > +{
> > + return (struct string_wrapper) {
> > + .str = str,
> > + .owns_string = take_ownership,
> > + };
> > +}
> > +
> > +static inline void
> > +string_wrapper_destroy(struct string_wrapper *s)
> > +{
> > + if (s->owns_string) {
> > + free(s->str);
> > + }
> > +}
> > +
> > /* Utilities around properly handling exit command. */
> > struct ovn_exit_args {
> > struct unixctl_conn **conns;
> > diff --git a/northd/lflow-mgr.c b/northd/lflow-mgr.c
> > index b2c60b5de..c81d9afcd 100644
> > --- a/northd/lflow-mgr.c
> > +++ b/northd/lflow-mgr.c
> > @@ -25,6 +25,7 @@
> > #include "debug.h"
> > #include "lflow-mgr.h"
> > #include "lib/ovn-parallel-hmap.h"
> > +#include "lib/ovn-util.h"
> >
> > VLOG_DEFINE_THIS_MODULE(lflow_mgr);
> >
> > @@ -36,7 +37,7 @@ static void ovn_lflow_init(struct ovn_lflow *, struct
> > ovn_datapath *od,
> > uint16_t priority, char *match,
> > char *actions, char *io_port,
> > char *ctrl_meter, char *stage_hint,
> > - const char *where);
> > + const char *where, struct string_wrapper
> > flow_desc);
> > static struct ovn_lflow *ovn_lflow_find(const struct hmap *lflows,
> > enum ovn_stage stage,
> > uint16_t priority, const char
> > *match,
> > @@ -52,7 +53,7 @@ static struct ovn_lflow *do_ovn_lflow_add(
> > const char *actions, const char *io_port,
> > const char *ctrl_meter,
> > const struct ovsdb_idl_row *stage_hint,
> > - const char *where);
> > + const char *where, struct string_wrapper flow_desc);
> >
> >
> > static struct ovs_mutex *lflow_hash_lock(const struct hmap *lflow_table,
> > @@ -173,6 +174,7 @@ struct ovn_lflow {
> > * 'dpg_bitmap'. */
> > struct ovn_dp_group *dpg; /* Link to unique Sb datapath group. */
> > const char *where;
> > + struct string_wrapper flow_desc;
> >
> > struct uuid sb_uuid; /* SB DB row uuid, specified by northd. */
> > struct ovs_list referenced_by; /* List of struct lflow_ref_node. */
> > @@ -659,7 +661,7 @@ lflow_table_add_lflow(struct lflow_table *lflow_table,
> > const char *match, const char *actions,
> > const char *io_port, const char *ctrl_meter,
> > const struct ovsdb_idl_row *stage_hint,
> > - const char *where,
> > + const char *where, struct string_wrapper flow_desc,
> > struct lflow_ref *lflow_ref)
> > OVS_EXCLUDED(fake_hash_mutex)
> > {
> > @@ -679,7 +681,7 @@ lflow_table_add_lflow(struct lflow_table *lflow_table,
> > do_ovn_lflow_add(lflow_table,
> > od ? ods_size(od->datapaths) : dp_bitmap_len,
> > hash, stage, priority, match, actions,
> > - io_port, ctrl_meter, stage_hint, where);
> > + io_port, ctrl_meter, stage_hint, where,
> > flow_desc);
> >
> > if (lflow_ref) {
> > struct lflow_ref_node *lrn =
> > @@ -733,7 +735,7 @@ lflow_table_add_lflow_default_drop(struct lflow_table
> > *lflow_table,
> > {
> > lflow_table_add_lflow(lflow_table, od, NULL, 0, stage, 0, "1",
> > debug_drop_action(), NULL, NULL, NULL,
> > - where, lflow_ref);
> > + where, EMPTY_STRING_WRAPPER, lflow_ref);
> > }
> >
> > struct ovn_dp_group *
> > @@ -856,7 +858,8 @@ static void
> > ovn_lflow_init(struct ovn_lflow *lflow, struct ovn_datapath *od,
> > size_t dp_bitmap_len, enum ovn_stage stage, uint16_t
> > priority,
> > char *match, char *actions, char *io_port, char *ctrl_meter,
> > - char *stage_hint, const char *where)
> > + char *stage_hint, const char *where,
> > + struct string_wrapper flow_desc)
> > {
> > lflow->dpg_bitmap = bitmap_allocate(dp_bitmap_len);
> > lflow->od = od;
> > @@ -867,6 +870,7 @@ ovn_lflow_init(struct ovn_lflow *lflow, struct
> > ovn_datapath *od,
> > lflow->io_port = io_port;
> > lflow->stage_hint = stage_hint;
> > lflow->ctrl_meter = ctrl_meter;
> > + lflow->flow_desc = flow_desc;
> > lflow->dpg = NULL;
> > lflow->where = where;
> > lflow->sb_uuid = UUID_ZERO;
> > @@ -946,6 +950,7 @@ ovn_lflow_destroy(struct lflow_table *lflow_table,
> > struct ovn_lflow *lflow)
> > free(lflow->io_port);
> > free(lflow->stage_hint);
> > free(lflow->ctrl_meter);
> > + string_wrapper_destroy(&lflow->flow_desc);
> > ovn_lflow_clear_dp_refcnts_map(lflow);
> > struct lflow_ref_node *lrn;
> > LIST_FOR_EACH_SAFE (lrn, ref_list_node, &lflow->referenced_by) {
> > @@ -960,7 +965,7 @@ do_ovn_lflow_add(struct lflow_table *lflow_table,
> > size_t dp_bitmap_len,
> > const char *match, const char *actions,
> > const char *io_port, const char *ctrl_meter,
> > const struct ovsdb_idl_row *stage_hint,
> > - const char *where)
> > + const char *where, struct string_wrapper flow_desc)
> > OVS_REQUIRES(fake_hash_mutex)
> > {
> > struct ovn_lflow *old_lflow;
> > @@ -982,7 +987,8 @@ do_ovn_lflow_add(struct lflow_table *lflow_table,
> > size_t dp_bitmap_len,
> > xstrdup(match), xstrdup(actions),
> > io_port ? xstrdup(io_port) : NULL,
> > nullable_xstrdup(ctrl_meter),
> > - ovn_lflow_hint(stage_hint), where);
> > + ovn_lflow_hint(stage_hint), where,
> > + flow_desc);
> >
> > if (parallelization_state != STATE_USE_PARALLELIZATION) {
> > hmap_insert(&lflow_table->entries, &lflow->hmap_node, hash);
> > @@ -1050,6 +1056,9 @@ sync_lflow_to_sb(struct ovn_lflow *lflow,
> > sbrec_logical_flow_set_priority(sbflow, lflow->priority);
> > sbrec_logical_flow_set_match(sbflow, lflow->match);
> > sbrec_logical_flow_set_actions(sbflow, lflow->actions);
> > + if (lflow->flow_desc.str) {
> > + sbrec_logical_flow_set_flow_desc(sbflow, lflow->flow_desc.str);
> > + }
> > if (lflow->io_port) {
> > struct smap tags = SMAP_INITIALIZER(&tags);
> > smap_add(&tags, "in_out_port", lflow->io_port);
> > diff --git a/northd/lflow-mgr.h b/northd/lflow-mgr.h
> > index 83b087f47..56cda8507 100644
> > --- a/northd/lflow-mgr.h
> > +++ b/northd/lflow-mgr.h
> > @@ -78,7 +78,8 @@ void lflow_table_add_lflow(struct lflow_table *, const
> > struct ovn_datapath *,
> > const char *actions, const char *io_port,
> > const char *ctrl_meter,
> > const struct ovsdb_idl_row *stage_hint,
> > - const char *where, struct lflow_ref *);
> > + const char *where, struct string_wrapper
> > flow_desc,
> > + struct lflow_ref *);
> > void lflow_table_add_lflow_default_drop(struct lflow_table *,
> > const struct ovn_datapath *,
> > enum ovn_stage stage,
> > @@ -91,20 +92,20 @@ void lflow_table_add_lflow_default_drop(struct
> > lflow_table *,
> > STAGE_HINT, LFLOW_REF) \
> > lflow_table_add_lflow(LFLOW_TABLE, OD, NULL, 0, STAGE, PRIORITY,
> > MATCH, \
> > ACTIONS, IN_OUT_PORT, CTRL_METER, STAGE_HINT, \
> > - OVS_SOURCE_LOCATOR, LFLOW_REF)
> > + OVS_SOURCE_LOCATOR, EMPTY_STRING_WRAPPER,
> > LFLOW_REF)
> >
> > #define ovn_lflow_add_with_hint(LFLOW_TABLE, OD, STAGE, PRIORITY, MATCH, \
> > ACTIONS, STAGE_HINT, LFLOW_REF) \
> > lflow_table_add_lflow(LFLOW_TABLE, OD, NULL, 0, STAGE, PRIORITY,
> > MATCH, \
> > ACTIONS, NULL, NULL, STAGE_HINT, \
> > - OVS_SOURCE_LOCATOR, LFLOW_REF)
> > + OVS_SOURCE_LOCATOR, EMPTY_STRING_WRAPPER,
> > LFLOW_REF)
> >
> > #define ovn_lflow_add_with_dp_group(LFLOW_TABLE, DP_BITMAP, DP_BITMAP_LEN,
> > \
> > STAGE, PRIORITY, MATCH, ACTIONS, \
> > STAGE_HINT, LFLOW_REF) \
> > lflow_table_add_lflow(LFLOW_TABLE, NULL, DP_BITMAP, DP_BITMAP_LEN,
> > STAGE, \
> > PRIORITY, MATCH, ACTIONS, NULL, NULL,
> > STAGE_HINT, \
> > - OVS_SOURCE_LOCATOR, LFLOW_REF)
> > + OVS_SOURCE_LOCATOR, EMPTY_STRING_WRAPPER,
> > LFLOW_REF)
> >
> > #define ovn_lflow_add_default_drop(LFLOW_TABLE, OD, STAGE, LFLOW_REF) \
> > lflow_table_add_lflow_default_drop(LFLOW_TABLE, OD, STAGE, \
> > @@ -126,12 +127,28 @@ void lflow_table_add_lflow_default_drop(struct
> > lflow_table *,
> > STAGE_HINT, LFLOW_REF) \
> > lflow_table_add_lflow(LFLOW_TABLE, OD, NULL, 0, STAGE, PRIORITY,
> > MATCH, \
> > ACTIONS, IN_OUT_PORT, NULL, STAGE_HINT, \
> > - OVS_SOURCE_LOCATOR, LFLOW_REF)
> > + OVS_SOURCE_LOCATOR, EMPTY_STRING_WRAPPER,
> > LFLOW_REF)
> >
> > #define ovn_lflow_add(LFLOW_TABLE, OD, STAGE, PRIORITY, MATCH, ACTIONS, \
> > LFLOW_REF) \
> > lflow_table_add_lflow(LFLOW_TABLE, OD, NULL, 0, STAGE, PRIORITY,
> > MATCH, \
> > ACTIONS, NULL, NULL, NULL, OVS_SOURCE_LOCATOR, \
> > + EMPTY_STRING_WRAPPER, LFLOW_REF)
> > +
> > +#define ovn_lflow_add_drop_with_desc(LFLOW_TABLE, OD, STAGE, PRIORITY,
> > MATCH, \
> > + DESCRIPTION, LFLOW_REF) \
> > + lflow_table_add_lflow(LFLOW_TABLE, OD, NULL, 0, STAGE, PRIORITY,
> > MATCH, \
> > + debug_drop_action(), NULL, NULL, NULL, \
> > + OVS_SOURCE_LOCATOR, \
> > + string_wrapper_create(DESCRIPTION, false),
> > LFLOW_REF)
> > +
> > +#define ovn_lflow_add_drop_with_lport_hint_and_desc(LFLOW_TABLE, OD,
> > STAGE, \
> > + PRIORITY, MATCH, IN_OUT_PORT, \
> > + STAGE_HINT, DESCRIPTION,
> > LFLOW_REF) \
> > + lflow_table_add_lflow(LFLOW_TABLE, OD, NULL, 0, STAGE, PRIORITY,
> > MATCH, \
> > + debug_drop_action(), IN_OUT_PORT, NULL,
> > STAGE_HINT, \
> > + OVS_SOURCE_LOCATOR, \
> > + string_wrapper_create(DESCRIPTION, false), \
> > LFLOW_REF)
> >
> > #define ovn_lflow_metered(LFLOW_TABLE, OD, STAGE, PRIORITY, MATCH,
> > ACTIONS, \
> > diff --git a/northd/northd.c b/northd/northd.c
> > index 6898daa00..878e66b3d 100644
> > --- a/northd/northd.c
> > +++ b/northd/northd.c
> > @@ -5877,9 +5877,9 @@ build_lswitch_output_port_sec_od(struct ovn_datapath
> > *od,
> > REGBIT_PORT_SEC_DROP" = check_out_port_sec(); next;",
> > lflow_ref);
> >
> > - ovn_lflow_add(lflows, od, S_SWITCH_OUT_APPLY_PORT_SEC, 50,
> > - REGBIT_PORT_SEC_DROP" == 1", debug_drop_action(),
> > - lflow_ref);
> > + ovn_lflow_add_drop_with_desc(lflows, od, S_SWITCH_OUT_APPLY_PORT_SEC,
> > 50,
> > + REGBIT_PORT_SEC_DROP" == 1",
> > + "Packet does not follow port security rules", lflow_ref);
> > ovn_lflow_add(lflows, od, S_SWITCH_OUT_APPLY_PORT_SEC, 0,
> > "1", "output;", lflow_ref);
> > }
> > @@ -8695,10 +8695,11 @@
> > build_drop_arp_nd_flows_for_unbound_router_ports(struct ovn_port *op,
> > port->json_key,
> > op->lsp_addrs[i].ea_s, op->json_key,
> > rp->lsp_addrs[k].ipv4_addrs[l].addr_s);
> > - ovn_lflow_add_with_lport_and_hint(
> > + ovn_lflow_add_drop_with_lport_hint_and_desc(
> > lflows, op->od, S_SWITCH_IN_EXTERNAL_PORT, 100,
> > - ds_cstr(&match), debug_drop_action(), port->key,
> > - &op->nbsp->header_, lflow_ref);
> > + ds_cstr(&match), port->key,
> > + &op->nbsp->header_,
> > + "Drop arp for unknown router ports", lflow_ref);
> > }
> > for (size_t l = 0; l < rp->lsp_addrs[k].n_ipv6_addrs; l++)
> > {
> > ds_clear(&match);
> > @@ -8711,10 +8712,11 @@
> > build_drop_arp_nd_flows_for_unbound_router_ports(struct ovn_port *op,
> > rp->lsp_addrs[k].ipv6_addrs[l].addr_s,
> > rp->lsp_addrs[k].ipv6_addrs[l].sn_addr_s,
> > rp->lsp_addrs[k].ipv6_addrs[l].addr_s);
> > - ovn_lflow_add_with_lport_and_hint(
> > + ovn_lflow_add_drop_with_lport_hint_and_desc(
> > lflows, op->od, S_SWITCH_IN_EXTERNAL_PORT, 100,
> > - ds_cstr(&match), debug_drop_action(), port->key,
> > - &op->nbsp->header_, lflow_ref);
> > + ds_cstr(&match), port->key,
> > + &op->nbsp->header_, "Drop ND for unbownd router
> > ports",
s/unbownd/unbound
Thanks
Numan
> > + lflow_ref);
> > }
> >
> > ds_clear(&match);
> > @@ -8725,12 +8727,13 @@
> > build_drop_arp_nd_flows_for_unbound_router_ports(struct ovn_port *op,
> > port->json_key,
> > op->lsp_addrs[i].ea_s, rp->lsp_addrs[k].ea_s,
> > op->json_key);
> > - ovn_lflow_add_with_lport_and_hint(lflows, op->od,
> > + ovn_lflow_add_drop_with_lport_hint_and_desc(lflows, op->od,
> >
> > S_SWITCH_IN_EXTERNAL_PORT,
> > 100, ds_cstr(&match),
> > - debug_drop_action(),
> > port->key,
> > &op->nbsp->header_,
> > + "Packet does not come
> > from" \
> > + " a chassis resident",
> > lflow_ref);
> > }
> > }
> > @@ -8756,8 +8759,9 @@ build_lswitch_lflows_l2_unknown(struct ovn_datapath
> > *od,
> > "outport = \""MC_UNKNOWN "\"; output;",
> > lflow_ref);
> > } else {
> > - ovn_lflow_add(lflows, od, S_SWITCH_IN_L2_UNKNOWN, 50,
> > - "outport == \"none\"", debug_drop_action(),
> > + ovn_lflow_add_drop_with_desc(lflows, od, S_SWITCH_IN_L2_UNKNOWN,
> > 50,
> > + "outport == \"none\"",
> > + "No L2 destination",
> > lflow_ref);
> > }
> > ovn_lflow_add(lflows, od, S_SWITCH_IN_L2_UNKNOWN, 0, "1",
> > @@ -8793,31 +8797,31 @@ build_lswitch_lflows_admission_control(struct
> > ovn_datapath *od,
> > ovs_assert(od->nbs);
> >
> > /* Default action for recirculated ICMP error 'packet too big'. */
> > - ovn_lflow_add(lflows, od, S_SWITCH_IN_CHECK_PORT_SEC, 105,
> > + ovn_lflow_add_drop_with_desc(lflows, od, S_SWITCH_IN_CHECK_PORT_SEC,
> > 105,
> > "((ip4 && icmp4.type == 3 && icmp4.code == 4) ||"
> > " (ip6 && icmp6.type == 2 && icmp6.code == 0)) &&"
> > - " flags.tunnel_rx == 1", debug_drop_action(), lflow_ref);
> > + " flags.tunnel_rx == 1", "ICMP: packet too big",
> > lflow_ref);
> >
> > /* Logical VLANs not supported. */
> > if (!is_vlan_transparent(od)) {
> > /* Block logical VLANs. */
> > - ovn_lflow_add(lflows, od, S_SWITCH_IN_CHECK_PORT_SEC, 100,
> > - "vlan.present", debug_drop_action(),
> > + ovn_lflow_add_drop_with_desc(lflows, od,
> > S_SWITCH_IN_CHECK_PORT_SEC,
> > + 100, "vlan.present", "VLANs blocked",
> > lflow_ref);
> > }
> >
> > /* Broadcast/multicast source address is invalid. */
> > - ovn_lflow_add(lflows, od, S_SWITCH_IN_CHECK_PORT_SEC, 100,
> > - "eth.src[40]", debug_drop_action(),
> > - lflow_ref);
> > + ovn_lflow_add_drop_with_desc(lflows, od, S_SWITCH_IN_CHECK_PORT_SEC,
> > 100,
> > + "eth.src[40]", "incoming Broadcast/multicast source" \
> > + " address is invalid", lflow_ref);
> >
> > ovn_lflow_add(lflows, od, S_SWITCH_IN_CHECK_PORT_SEC, 50, "1",
> > REGBIT_PORT_SEC_DROP" = check_in_port_sec(); next;",
> > lflow_ref);
> >
> > - ovn_lflow_add(lflows, od, S_SWITCH_IN_APPLY_PORT_SEC, 50,
> > - REGBIT_PORT_SEC_DROP" == 1", debug_drop_action(),
> > - lflow_ref);
> > + ovn_lflow_add_drop_with_desc(lflows, od, S_SWITCH_IN_APPLY_PORT_SEC,
> > 50,
> > + REGBIT_PORT_SEC_DROP" == 1",
> > + "Broadcast/multicast port security invalid", lflow_ref);
> >
> > ovn_lflow_add(lflows, od, S_SWITCH_IN_APPLY_PORT_SEC, 0, "1", "next;",
> > lflow_ref);
> > diff --git a/ovn-sb.ovsschema b/ovn-sb.ovsschema
> > index b6c051ae6..b512dc2a5 100644
> > --- a/ovn-sb.ovsschema
> > +++ b/ovn-sb.ovsschema
> > @@ -1,7 +1,7 @@
> > {
> > "name": "OVN_Southbound",
> > - "version": "20.34.0",
> > - "cksum": "2786607656 31376",
> > + "version": "20.35.0",
> > + "cksum": "831370701 31501",
> > "tables": {
> > "SB_Global": {
> > "columns": {
> > @@ -116,7 +116,9 @@
> > "min": 0, "max": 1}},
> > "external_ids": {
> > "type": {"key": "string", "value": "string",
> > - "min": 0, "max": "unlimited"}}},
> > + "min": 0, "max": "unlimited"}},
> > + "flow_desc": {"type": {"key": {"type": "string"},
> > + "min": 0, "max": 1}}},
> > "isRoot": true},
> > "Logical_DP_Group": {
> > "columns": {
> > diff --git a/ovn-sb.xml b/ovn-sb.xml
> > index 73a1be5ed..2703cb6ea 100644
> > --- a/ovn-sb.xml
> > +++ b/ovn-sb.xml
> > @@ -2913,6 +2913,11 @@ tcp.flags = RST;
> > <code>ovn-controller</code>.
> > </column>
> >
> > + <column name="flow_desc">
> > + Human-readable explanation of the flow, this is optional and used
> > + to provide context for the given flow.
> > + </column>
> > +
> > <column name="external_ids" key="stage-name">
> > Human-readable name for this flow's stage in the pipeline.
> > </column>
> > diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
> > index a389d1988..51fdd993e 100644
> > --- a/tests/ovn-northd.at
> > +++ b/tests/ovn-northd.at
> > @@ -12492,6 +12492,21 @@ AT_CHECK([grep -e "DHCP_RELAY_" lflows | sed
> > 's/table=../table=??/'], [0], [dnl
> > AT_CLEANUP
> > ])
> >
> > +OVN_FOR_EACH_NORTHD_NO_HV([
> > +AT_SETUP([check for flow_desc])
> > +ovn_start
> > +
> > +check ovn-nbctl -- set NB_Global . options:debug_drop_collector_set="123"
> > +check ovn-nbctl ls-add ls1
> > +
> > +check ovn-nbctl --wait=hv sync
> > +
> > +flow_desc=$(fetch_column Logical_flow flow_desc match='"outport ==
> > \"none\""')
> > +AT_CHECK([test "$flow_desc" != ""])
> > +
> > +AT_CLEANUP
> > +])
> > +
> > AT_SETUP([NB_Global and SB_Global incremental processing])
> >
> > ovn_start
> > --
> > 2.45.2
> >
> > _______________________________________________
> > dev mailing list
> > d...@openvswitch.org
> > https://mail.openvswitch.org/mailman/listinfo/ovs-dev
> >
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