2
0
mirror of https://github.com/openvswitch/ovs synced 2025-08-22 01:51:26 +00:00

Implement OFPT_TABLE_STATUS Message.

On change in a table state, the controller needs to be informed with
the OFPT_TABLE_STATUS message. The message is sent with reason
OFPTR_VACANCY_DOWN or OFPTR_VACANCY_UP in case of change in remaining
space eventually crossing any one of the threshold.

Signed-off-by: Saloni Jain <saloni.jain@tcs.com>
Co-authored-by: Rishi Bamba <rishi.bamba@tcs.com>
Signed-off-by: Rishi Bamba <rishi.bamba@tcs.com>
[blp@ovn.org added vacancy event initialization and tests
 and updated NEWS]
Signed-off-by: Ben Pfaff <blp@ovn.org>
This commit is contained in:
Saloni Jain 2016-02-18 15:54:26 +05:30 committed by Ben Pfaff
parent 1478295a21
commit 6c6eedc5d6
12 changed files with 330 additions and 16 deletions

1
NEWS
View File

@ -5,6 +5,7 @@ Post-v2.5.0
- OpenFlow:
* OpenFlow 1.1+ OFPT_QUEUE_GET_CONFIG_REQUEST now supports OFPP_ANY.
* OpenFlow 1.4+ OFPMP_QUEUE_DESC is now supported.
* OpenFlow 1.4+ OFPT_TABLE_STATUS is now supported.
* New property-based packet-in message format NXT_PACKET_IN2 with support
for arbitrary user-provided data and for serializing flow table
traversal into a continuation for later resumption.

View File

@ -157,6 +157,14 @@ struct ofp14_table_desc {
};
OFP_ASSERT(sizeof(struct ofp14_table_desc) == 8);
/* A table config has changed in the datapath */
struct ofp14_table_status {
uint8_t reason; /* One of OFPTR_*. */
uint8_t pad[7]; /* Pad to 64 bits */
/* Followed by struct ofp14_table_desc */
};
OFP_ASSERT(sizeof(struct ofp14_table_status) == 8);
/* ## ---------------- ## */
/* ## ofp14_port_stats ## */
/* ## ---------------- ## */

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@ -256,6 +256,9 @@ enum ofpraw {
/* OFPT 1.4+ (30): struct ofp14_role_status, uint8_t[8][]. */
OFPRAW_OFPT14_ROLE_STATUS,
/* OFPT 1.4+ (31): struct ofp14_table_status, uint8_t[8][]. */
OFPRAW_OFPT14_TABLE_STATUS,
/* OFPT 1.4+ (32): struct ofp14_requestforward, uint8_t[8][]. */
OFPRAW_OFPT14_REQUESTFORWARD,
@ -586,6 +589,9 @@ enum ofptype {
/* Request forwarding by the switch. */
OFPTYPE_REQUESTFORWARD, /* OFPRAW_OFPT14_REQUESTFORWARD. */
/* Asynchronous messages. */
OFPTYPE_TABLE_STATUS, /* OFPRAW_OFPT14_TABLE_STATUS. */
OFPTYPE_BUNDLE_CONTROL, /* OFPRAW_OFPT14_BUNDLE_CONTROL. */
OFPTYPE_BUNDLE_ADD_MESSAGE, /* OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE. */

View File

@ -1139,6 +1139,28 @@ ofp_print_table_desc(struct ds *string, const struct ofputil_table_desc *td)
ds_put_char(string, '\n');
}
static void
ofp_print_table_status_message(struct ds *string, const struct ofp_header *oh)
{
struct ofputil_table_status ts;
enum ofperr error;
error = ofputil_decode_table_status(oh, &ts);
if (error) {
ofp_print_error(string, error);
return;
}
if (ts.reason == OFPTR_VACANCY_DOWN) {
ds_put_format(string, " reason=VACANCY_DOWN");
} else if (ts.reason == OFPTR_VACANCY_UP) {
ds_put_format(string, " reason=VACANCY_UP");
}
ds_put_format(string, "\ntable_desc:-");
ofp_print_table_desc(string, &ts.desc);
}
static void
ofp_print_queue_get_config_request(struct ds *string,
const struct ofp_header *oh)
@ -3234,6 +3256,10 @@ ofp_to_string__(const struct ofp_header *oh, enum ofpraw raw,
ofp_print_requestforward(string, oh);
break;
case OFPTYPE_TABLE_STATUS:
ofp_print_table_status_message(string, oh);
break;
case OFPTYPE_METER_STATS_REQUEST:
case OFPTYPE_METER_CONFIG_STATS_REQUEST:
ofp_print_stats(string, oh);

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@ -9645,6 +9645,7 @@ ofputil_is_bundlable(enum ofptype type)
case OFPTYPE_TABLE_DESC_REPLY:
case OFPTYPE_ROLE_STATUS:
case OFPTYPE_REQUESTFORWARD:
case OFPTYPE_TABLE_STATUS:
case OFPTYPE_NXT_TLV_TABLE_REQUEST:
case OFPTYPE_NXT_TLV_TABLE_REPLY:
case OFPTYPE_NXT_RESUME:
@ -10207,3 +10208,89 @@ ofputil_async_cfg_default(enum ofp_version version)
.slave[OAM_PORT_STATUS] = OFPPR_BITS,
};
}
static void
ofputil_put_ofp14_table_desc(const struct ofputil_table_desc *td,
struct ofpbuf *b, enum ofp_version version)
{
struct ofp14_table_desc *otd;
struct ofp14_table_mod_prop_vacancy *otv;
size_t start_otd;
start_otd = b->size;
ofpbuf_put_zeros(b, sizeof *otd);
ofpprop_put_u32(b, OFPTMPT14_EVICTION, td->eviction_flags);
otv = ofpbuf_put_zeros(b, sizeof *otv);
otv->type = htons(OFPTMPT14_VACANCY);
otv->length = htons(sizeof *otv);
otv->vacancy_down = td->table_vacancy.vacancy_down;
otv->vacancy_up = td->table_vacancy.vacancy_up;
otv->vacancy = td->table_vacancy.vacancy;
otd = ofpbuf_at_assert(b, start_otd, sizeof *otd);
otd->length = htons(b->size - start_otd);
otd->table_id = td->table_id;
otd->config = ofputil_encode_table_config(OFPUTIL_TABLE_MISS_DEFAULT,
td->eviction, td->vacancy,
version);
}
/* Converts the abstract form of a "table status" message in '*ts' into an
* OpenFlow message suitable for 'protocol', and returns that encoded form in
* a buffer owned by the caller. */
struct ofpbuf *
ofputil_encode_table_status(const struct ofputil_table_status *ts,
enum ofputil_protocol protocol)
{
enum ofp_version version;
struct ofpbuf *b;
version = ofputil_protocol_to_ofp_version(protocol);
if (version >= OFP14_VERSION) {
enum ofpraw raw;
struct ofp14_table_status *ots;
raw = OFPRAW_OFPT14_TABLE_STATUS;
b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
ots = ofpbuf_put_zeros(b, sizeof *ots);
ots->reason = ts->reason;
ofputil_put_ofp14_table_desc(&ts->desc, b, version);
ofpmsg_update_length(b);
return b;
} else {
return NULL;
}
}
/* Decodes the OpenFlow "table status" message in '*ots' into an abstract form
* in '*ts'. Returns 0 if successful, otherwise an OFPERR_* value. */
enum ofperr
ofputil_decode_table_status(const struct ofp_header *oh,
struct ofputil_table_status *ts)
{
const struct ofp14_table_status *ots;
struct ofpbuf b;
enum ofperr error;
enum ofpraw raw;
ofpbuf_use_const(&b, oh, ntohs(oh->length));
raw = ofpraw_pull_assert(&b);
ots = ofpbuf_pull(&b, sizeof *ots);
if (raw == OFPRAW_OFPT14_TABLE_STATUS) {
if (ots->reason != OFPTR_VACANCY_DOWN
&& ots->reason != OFPTR_VACANCY_UP) {
return OFPERR_OFPBPC_BAD_VALUE;
}
ts->reason = ots->reason;
error = ofputil_decode_table_desc(&b, &ts->desc, oh->version);
return error;
} else {
return OFPERR_OFPBRC_BAD_VERSION;
}
return 0;
}

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@ -1405,4 +1405,16 @@ enum ofperr ofputil_decode_requestforward(const struct ofp_header *,
struct ofputil_requestforward *);
void ofputil_destroy_requestforward(struct ofputil_requestforward *);
/* Abstract ofp14_table_status. */
struct ofputil_table_status {
enum ofp14_table_reason reason; /* One of OFPTR_*. */
struct ofputil_table_desc desc; /* New table config. */
};
enum ofperr ofputil_decode_table_status(const struct ofp_header *oh,
struct ofputil_table_status *ts);
struct ofpbuf *
ofputil_encode_table_status(const struct ofputil_table_status *ts,
enum ofputil_protocol protocol);
#endif /* ofp-util.h */

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@ -1404,6 +1404,7 @@ is_admitted_msg(const struct ofpbuf *b)
case OFPTYPE_ROLE_REPLY:
case OFPTYPE_ROLE_STATUS:
case OFPTYPE_REQUESTFORWARD:
case OFPTYPE_TABLE_STATUS:
case OFPTYPE_SET_FLOW_FORMAT:
case OFPTYPE_FLOW_MOD_TABLE_ID:
case OFPTYPE_SET_PACKET_IN_FORMAT:

View File

@ -1648,6 +1648,37 @@ connmgr_send_flow_removed(struct connmgr *mgr,
}
}
/* Sends an OFPT_TABLE_STATUS message with 'reason' to appropriate controllers
* managed by 'mgr'. When the table state changes, the controller needs to be
* informed with the OFPT_TABLE_STATUS message. The reason values
* OFPTR_VACANCY_DOWN and OFPTR_VACANCY_UP identify a vacancy message. The
* vacancy events are generated when the remaining space in the flow table
* changes and crosses one of the vacancy thereshold specified by
* OFPT_TABLE_MOD. */
void
connmgr_send_table_status(struct connmgr *mgr,
const struct ofputil_table_desc *td,
uint8_t reason)
{
struct ofputil_table_status ts;
struct ofconn *ofconn;
ts.reason = reason;
ts.desc = *td;
LIST_FOR_EACH (ofconn, node, &mgr->all_conns) {
if (ofconn_receives_async_msg(ofconn, OAM_TABLE_STATUS, reason)) {
struct ofpbuf *msg;
msg = ofputil_encode_table_status(&ts,
ofconn_get_protocol(ofconn));
if (msg) {
ofconn_send(ofconn, msg, NULL);
}
}
}
}
/* Given 'pin', sends an OFPT_PACKET_IN message to each OpenFlow controller as
* necessary according to their individual configurations. */
void

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@ -217,4 +217,7 @@ void ofmonitor_compose_refresh_updates(struct rule_collection *rules,
struct ovs_list *msgs)
OVS_REQUIRES(ofproto_mutex);
void connmgr_send_table_status(struct connmgr *,
const struct ofputil_table_desc *td,
uint8_t reason);
#endif /* connmgr.h */

View File

@ -256,8 +256,11 @@ struct oftable {
#define EVICTION_OPENFLOW (1 << 1) /* Set to 1 if OpenFlow enables eviction. */
unsigned int eviction;
/* If true, vacancy events are enabled; otherwise they are disabled. */
bool vacancy_enabled;
/* If zero, vacancy events are disabled. If nonzero, this is the type of
vacancy event that is enabled: either OFPTR_VACANCY_DOWN or
OFPTR_VACANCY_UP. Only one type of vacancy event can be enabled at a
time. */
enum ofp14_table_reason vacancy_event;
/* Non-zero values for vacancy_up and vacancy_down indicates that vacancy
* is enabled by table-mod, else these values are set to zero when

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@ -3594,24 +3594,35 @@ handle_table_features_request(struct ofconn *ofconn,
return 0;
}
/* Returns the vacancy of 'oftable', a number that ranges from 0 (if the table
* is full) to 100 (if the table is empty).
*
* A table without a limit on flows is considered to be empty. */
static uint8_t
oftable_vacancy(const struct oftable *t)
{
return (!t->max_flows ? 100
: t->n_flows >= t->max_flows ? 0
: (t->max_flows - t->n_flows) * 100.0 / t->max_flows);
}
static void
query_table_desc__(struct ofputil_table_desc *td,
struct ofproto *ofproto, uint8_t table_id)
{
unsigned int count = ofproto->tables[table_id].n_flows;
unsigned int max_flows = ofproto->tables[table_id].max_flows;
const struct oftable *t = &ofproto->tables[table_id];
td->table_id = table_id;
td->eviction = (ofproto->tables[table_id].eviction & EVICTION_OPENFLOW
td->eviction = (t->eviction & EVICTION_OPENFLOW
? OFPUTIL_TABLE_EVICTION_ON
: OFPUTIL_TABLE_EVICTION_OFF);
td->eviction_flags = OFPROTO_EVICTION_FLAGS;
td->vacancy = (ofproto->tables[table_id].vacancy_enabled
td->vacancy = (t->vacancy_event
? OFPUTIL_TABLE_VACANCY_ON
: OFPUTIL_TABLE_VACANCY_OFF);
td->table_vacancy.vacancy_down = ofproto->tables[table_id].vacancy_down;
td->table_vacancy.vacancy_up = ofproto->tables[table_id].vacancy_up;
td->table_vacancy.vacancy = max_flows ? (count * 100) / max_flows : 0;
td->table_vacancy.vacancy_down = t->vacancy_down;
td->table_vacancy.vacancy_up = t->vacancy_up;
td->table_vacancy.vacancy = oftable_vacancy(t);
}
/* This function queries the database for dumping table-desc. */
@ -3651,6 +3662,40 @@ handle_table_desc_request(struct ofconn *ofconn,
return 0;
}
/* This function determines and sends the vacancy event, based on the value
* of current vacancy and threshold vacancy. If the current vacancy is less
* than or equal to vacancy_down, vacancy up events must be enabled, and when
* the current vacancy is greater or equal to vacancy_up, vacancy down events
* must be enabled. */
static void
send_table_status(struct ofproto *ofproto, uint8_t table_id)
{
struct oftable *t = &ofproto->tables[table_id];
if (!t->vacancy_event) {
return;
}
uint8_t vacancy = oftable_vacancy(t);
enum ofp14_table_reason event;
if (vacancy < t->vacancy_down) {
event = OFPTR_VACANCY_DOWN;
} else if (vacancy > t->vacancy_up) {
event = OFPTR_VACANCY_UP;
} else {
return;
}
if (event == t->vacancy_event) {
struct ofputil_table_desc td;
query_table_desc__(&td, ofproto, table_id);
connmgr_send_table_status(ofproto->connmgr, &td, event);
t->vacancy_event = (event == OFPTR_VACANCY_DOWN
? OFPTR_VACANCY_UP
: OFPTR_VACANCY_DOWN);
}
}
static void
append_port_stat(struct ofport *port, struct ovs_list *replies)
{
@ -4686,6 +4731,9 @@ add_flow_finish(struct ofproto *ofproto, struct ofproto_flow_mod *ofm,
ofmonitor_report(ofproto->connmgr, new_rule, NXFME_ADDED, 0,
req ? req->ofconn : NULL,
req ? req->request->xid : 0, NULL);
/* Send Vacancy Events for OF1.4+. */
send_table_status(ofproto, new_rule->table_id);
}
send_buffered_packet(req, fm->buffer_id, new_rule);
@ -5081,6 +5129,10 @@ delete_flows_finish__(struct ofproto *ofproto,
ofmonitor_report(ofproto->connmgr, rule, NXFME_DELETED, reason,
req ? req->ofconn : NULL,
req ? req->request->xid : 0, NULL);
/* Send Vacancy Event for OF1.4+. */
send_table_status(ofproto, rule->table_id);
ofproto_rule_remove__(ofproto, rule);
learned_cookies_dec(ofproto, rule_get_actions(rule),
&dead_cookies);
@ -6740,11 +6792,16 @@ table_mod__(struct oftable *oftable,
if (tm->vacancy != OFPUTIL_TABLE_VACANCY_DEFAULT) {
ovs_mutex_lock(&ofproto_mutex);
oftable->vacancy_enabled = (tm->vacancy == OFPUTIL_TABLE_VACANCY_ON
? OFPTC14_VACANCY_EVENTS
: 0);
oftable->vacancy_down = tm->table_vacancy.vacancy_down;
oftable->vacancy_up = tm->table_vacancy.vacancy_up;
if (tm->vacancy == OFPUTIL_TABLE_VACANCY_OFF) {
oftable->vacancy_event = 0;
} else if (!oftable->vacancy_event) {
uint8_t vacancy = oftable_vacancy(oftable);
oftable->vacancy_event = (vacancy < oftable->vacancy_up
? OFPTR_VACANCY_UP
: OFPTR_VACANCY_DOWN);
}
ovs_mutex_unlock(&ofproto_mutex);
}
}
@ -7328,6 +7385,7 @@ handle_openflow__(struct ofconn *ofconn, const struct ofpbuf *msg)
case OFPTYPE_TABLE_DESC_REPLY:
case OFPTYPE_ROLE_STATUS:
case OFPTYPE_REQUESTFORWARD:
case OFPTYPE_TABLE_STATUS:
case OFPTYPE_NXT_TLV_TABLE_REPLY:
default:
if (ofpmsg_is_stat_request(oh)) {

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@ -1999,7 +1999,7 @@ AT_CHECK([ovs-ofctl -O OpenFlow14 dump-table-desc br0 | sed '/^$/d
AT_CHECK([ovs-ofctl -O Openflow14 mod-table br0 0 vacancy:20,80])
# Check that the configuration was updated.
mv expout orig-expout
sed -e '3s/vacancy=off/vacancy=on vacancy_down=20% vacancy_up=80% vacancy=0%/' <orig-expout > expout
sed -e '3s/vacancy=off/vacancy=on vacancy_down=20% vacancy_up=80% vacancy=100%/' <orig-expout > expout
AT_CHECK([ovs-ofctl -O OpenFlow14 dump-table-desc br0 | sed '/^$/d
/^OFPST_TABLE_DESC/d'], [0], [expout])
OVS_VSWITCHD_STOP
@ -2907,7 +2907,7 @@ OFPT_PORT_STATUS (OF1.4): MOD: ${INDEX}(test): addr:aa:55:aa:55:00:0x
echo >>expout "OFPT_FLOW_REMOVED (OF1.4): reason=delete table_id=0"
fi
# OFPT_FLOW_REMOVED, OFPRR_GROUP_DELETE
# OFPT_FLOW_REMOVED, OFPRR_GROUP_DELETE
ovs-ofctl -O OpenFlow14 add-group br0 group_id=1234,type=all,bucket=output:10
ovs-ofctl -O OpenFlow14 add-flow br0 send_flow_rem,actions=group:1234
ovs-ofctl -O OpenFlow14 --strict del-groups br0 group_id=1234
@ -2915,6 +2915,84 @@ OFPT_PORT_STATUS (OF1.4): MOD: ${INDEX}(test): addr:aa:55:aa:55:00:0x
echo >>expout "OFPT_FLOW_REMOVED (OF1.4): reason=group_delete table_id=0"
fi
# OFPT_TABLE_STATUS, OFPTR_VACANCY_UP
if test X"$1" = X"OFPTR_VACANCY_UP"; then shift;
ovs-vsctl -- --id=@t1 create Flow_Table flow-limit=10 -- set bridge br0 flow_tables:1=@t1
# Turn on vacancy events, then add flows until we're full.
# With initial vacancy of 100% and vacancy_up of 80%, so that
# vacancy >= vacancy_up, this enables VACANY_DOWN events, so
# we get a single such message when vacancy dips below 20%.
ovs-ofctl -O OpenFlow14 mod-table br0 1 vacancy:20,80
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=1,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=2,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=3,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=4,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=5,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=6,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=7,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=8,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=9,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=10,actions=2
echo >>expout "OFPT_TABLE_STATUS (OF1.4): reason=VACANCY_DOWN
table_desc:-
table 1:
eviction=off eviction_flags=OTHER|IMPORTANCE|LIFETIME
vacancy=on vacancy_down=20% vacancy_up=80% vacancy=10%"
# Then delete flows until we're empty. Sending the
# VACANCY_DOWN message enabled VACANCY_UP events, so we get a
# single such message when vacancy rises above 80%.
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=1
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=2
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=3
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=4
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=5
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=6
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=7
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=8
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=9
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=10
echo >>expout "OFPT_TABLE_STATUS (OF1.4): reason=VACANCY_UP
table_desc:-
table 1:
eviction=off eviction_flags=OTHER|IMPORTANCE|LIFETIME
vacancy=on vacancy_down=20% vacancy_up=80% vacancy=90%"
# Now approach vacancy from the other direction. First
# disable vacancy events. With initial vacancy of 70%, so
# that vacancy < vacancy_up, this enables VACANCY_UP events.
# That means that filling up the table generates no message,
# but deleting all the flows generates VACANCY_UP at the point
# vacancy rises above 80%.
ovs-ofctl -O OpenFlow14 mod-table br0 1 novacancy
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=1,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=2,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=3,actions=2
ovs-ofctl -O OpenFlow14 mod-table br0 1 vacancy:20,80
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=4,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=5,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=6,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=7,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=8,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=9,actions=2
ovs-ofctl -O OpenFlow14 add-flow br0 table=1,in_port=10,actions=2
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=1
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=2
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=3
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=4
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=5
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=6
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=7
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=8
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=9
ovs-ofctl -O OpenFlow14 del-flows br0 table=1,in_port=10
echo >>expout "OFPT_TABLE_STATUS (OF1.4): reason=VACANCY_UP
table_desc:-
table 1:
eviction=off eviction_flags=OTHER|IMPORTANCE|LIFETIME
vacancy=on vacancy_down=20% vacancy_up=80% vacancy=90%"
fi
AT_FAIL_IF([test X"$1" != X])
ovs-appctl -t ovs-ofctl ofctl/barrier
@ -2940,8 +3018,8 @@ ovs-appctl -t ovs-ofctl ofctl/send 051800180000000200000003000000000000000000000
check_async 3 OFPPR_ADD OFPPR_MODIFY OFPPR_DELETE
# Use OF 1.4 OFPT_SET_ASYNC to enable a patchwork of asynchronous messages.
ovs-appctl -t ovs-ofctl ofctl/send 051c0038000000020000000800000005000100080000000200020008000000020003000800000005000400080000001c0005000800000005
check_async 4 OFPR_INVALID_TTL OFPPR_DELETE OFPRR_DELETE OFPRR_GROUP_DELETE
ovs-appctl -t ovs-ofctl ofctl/send 051c0040000000020000000800000005000100080000000200020008000000020003000800000005000400080000001c00050008000000050008000800000018
check_async 4 OFPR_INVALID_TTL OFPPR_DELETE OFPRR_DELETE OFPRR_GROUP_DELETE OFPTR_VACANCY_UP
# Set controller ID 123.
ovs-appctl -t ovs-ofctl ofctl/send 05040018000000030000232000000014000000000000007b