ovn-northd processes the list of Port_Bindings and hashes the list of
queues per chassis. When it finds a port with qos_parameters and without
a queue_id, it allocates a free queue for the chassis that this port belongs.
The queue_id information is stored in the options field of Port_binding table.
Adds an action set_queue to the ingress table 0 of the logical flows
which will be translated to openflow set_queue by ovn-controller
ovn-controller opens the netdev corresponding to the tunnel interface's
status:tunnel_egress_iface value and configures a HTB qdisc on it. Then for
each SB port_binding that has queue_id set, it allocates a queue with the
qos_parameters of that port. It also frees up unused queues.
This patch replaces the older approach of policing
Signed-off-by: Babu Shanmugam <bscha...@redhat.com>
---
ovn/controller/binding.c | 187 +++++++++++++++++++++++++++++++++++++++++++----
ovn/lib/actions.c | 29 ++++++++
ovn/lib/actions.h | 3 +
ovn/northd/ovn-northd.c | 132 +++++++++++++++++++++++++++++++--
ovn/ovn-nb.xml | 8 +-
ovn/ovn-sb.xml | 31 +++++++-
6 files changed, 360 insertions(+), 30 deletions(-)
diff --git a/ovn/controller/binding.c b/ovn/controller/binding.c
index a07c327..a1a14c4 100644
--- a/ovn/controller/binding.c
+++ b/ovn/controller/binding.c
@@ -20,6 +20,7 @@
#include "lib/hmap.h"
#include "lib/sset.h"
#include "lib/util.h"
+#include "lib/netdev.h"
#include "lib/vswitch-idl.h"
#include "openvswitch/vlog.h"
#include "ovn/lib/ovn-sb-idl.h"
@@ -27,6 +28,21 @@
VLOG_DEFINE_THIS_MODULE(binding);
+#define OVN_QOS_TYPE "linux-htb"
+
+struct qos_queue {
+ uint32_t queue_id;
+ uint32_t max_rate;
+ uint32_t burst;
+ struct hmap_node node;
+};
+
+struct tunnel_iface_entry {
+ const struct ovsrec_interface *iface_rec;
+ const struct ovsrec_port *port_rec;
+ struct ovs_list node;
+};
+
void
binding_register_ovs_idl(struct ovsdb_idl *ovs_idl)
{
@@ -40,17 +56,20 @@ binding_register_ovs_idl(struct ovsdb_idl *ovs_idl)
ovsdb_idl_add_table(ovs_idl, &ovsrec_table_port);
ovsdb_idl_add_column(ovs_idl, &ovsrec_port_col_name);
ovsdb_idl_add_column(ovs_idl, &ovsrec_port_col_interfaces);
+ ovsdb_idl_add_column(ovs_idl, &ovsrec_port_col_qos);
ovsdb_idl_add_table(ovs_idl, &ovsrec_table_interface);
ovsdb_idl_add_column(ovs_idl, &ovsrec_interface_col_name);
ovsdb_idl_add_column(ovs_idl, &ovsrec_interface_col_external_ids);
- ovsdb_idl_add_column(ovs_idl, &ovsrec_interface_col_ingress_policing_rate);
- ovsdb_idl_add_column(ovs_idl,
- &ovsrec_interface_col_ingress_policing_burst);
+ ovsdb_idl_add_column(ovs_idl, &ovsrec_interface_col_status);
+
+ ovsdb_idl_add_table(ovs_idl, &ovsrec_table_qos);
+ ovsdb_idl_add_column(ovs_idl, &ovsrec_qos_col_type);
}
static void
-get_local_iface_ids(const struct ovsrec_bridge *br_int, struct shash *lports)
+get_local_iface_ids(const struct ovsrec_bridge *br_int, struct shash *lports,
+ struct ovs_list *tunnel_ifaces)
{
int i;
@@ -68,10 +87,17 @@ get_local_iface_ids(const struct ovsrec_bridge *br_int,
struct shash *lports)
iface_rec = port_rec->interfaces[j];
iface_id = smap_get(&iface_rec->external_ids, "iface-id");
- if (!iface_id) {
- continue;
+ if (iface_id) {
+ shash_add(lports, iface_id, iface_rec);
+ }
+
+ /* Check if this is a tunnel interface. */
+ if (smap_get(&iface_rec->options, "remote_ip")) {
+ struct tunnel_iface_entry *entry = xzalloc(sizeof *entry);
+ entry->iface_rec = iface_rec;
+ entry->port_rec = port_rec;
+ ovs_list_push_back(tunnel_ifaces, &entry->node);
}
- shash_add(lports, iface_id, iface_rec);
}
}
}
@@ -91,14 +117,127 @@ add_local_datapath(struct hmap *local_datapaths,
}
static void
-update_qos(const struct ovsrec_interface *iface_rec,
- const struct sbrec_port_binding *pb)
+get_qos_params(const struct sbrec_port_binding *pb,
+ struct hmap *queue_map)
+{
+ uint32_t max_rate = smap_get_int(&pb->options, "qos_max_rate", 0);
+ uint32_t burst = smap_get_int(&pb->options, "qos_burst", 0);
+ uint32_t queue_id = smap_get_int(&pb->options, "qdisc_queue_id", 0);
+
+ if ((!max_rate && !burst) || !queue_id) {
+ /* Qos is not configured for this port. */
+ return;
+ }
+
+ struct qos_queue *node = xzalloc(sizeof *node);
+ node->max_rate = max_rate;
+ node->burst = burst;
+ node->queue_id = queue_id;
+ hmap_insert(queue_map, &node->node, hash_int(queue_id, 0));
+}
+
+static const struct ovsrec_qos *
+get_noop_qos(struct controller_ctx *ctx)
{
- int rate = smap_get_int(&pb->options, "policing_rate", 0);
- int burst = smap_get_int(&pb->options, "policing_burst", 0);
+ const struct ovsrec_qos *qos;
+
+ OVSREC_QOS_FOR_EACH(qos, ctx->ovs_idl) {
+ if (!strcmp(qos->type, "linux-noop")) {
+ return qos;
+ }
+ }
+
+ qos = ovsrec_qos_insert(ctx->ovs_idl_txn);
+ ovsrec_qos_set_type(qos, "linux-noop");
+ return qos;
+}
+
+static void
+setup_qos(const struct tunnel_iface_entry *entry,
+ const struct ovsrec_qos *noop_qos,
+ struct hmap *queue_map)
+{
+ const char *egress_iface;
+ struct netdev *netdev_phy;
+ const struct ovsrec_interface *tunnel_iface = entry->iface_rec;
+ const struct ovsrec_port *tunnel_port = entry->port_rec;
+
+ egress_iface = smap_get(&tunnel_iface->status, "tunnel_egress_iface");
+ if (!egress_iface) {
+ /* Queues cannot be configured. */
+ return;
+ }
+
+ /* Set noop qos on this port, so that vswitchd will not interfere. */
+ ovsrec_port_set_qos(tunnel_port, noop_qos);
- ovsrec_interface_set_ingress_policing_rate(iface_rec, MAX(0, rate));
- ovsrec_interface_set_ingress_policing_burst(iface_rec, MAX(0, burst));
+ if (netdev_open(egress_iface, NULL, &netdev_phy) != 0) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ VLOG_WARN_RL(&rl, "Unable to open netdev %s\n", egress_iface);
+ return;
+ }
+
+ /* Check and configure qdisc. */
+ const char *qdisc_type;
+ struct smap qdisc_details;
+
+ smap_init(&qdisc_details);
+ if (netdev_get_qos(netdev_phy, &qdisc_type, &qdisc_details) != 0 ||
+ qdisc_type[0] == '\0') {
+ /* Qos is not supported. */
+ return;
+ }
+
+ if (strcmp(qdisc_type, OVN_QOS_TYPE)) {
+ netdev_set_qos(netdev_phy, OVN_QOS_TYPE, &qdisc_details);
+ }
+
+ /* Check and delete if needed. */
+ struct netdev_queue_dump dump;
+ unsigned int queue_id;
+ struct smap queue_details;
+ struct qos_queue *sb_info;
+ struct hmap consistent_queues;
+
+ smap_init(&queue_details);
+ hmap_init(&consistent_queues);
+ NETDEV_QUEUE_FOR_EACH(&queue_id, &queue_details, &dump, netdev_phy) {
+ bool is_queue_needed = false;
+
+ HMAP_FOR_EACH_WITH_HASH (sb_info, node, hash_int(queue_id, 0),
+ queue_map) {
+ is_queue_needed = true;
+ if (sb_info->max_rate ==
+ smap_get_int(&queue_details, "max-rate", 0)
+ && sb_info->burst == smap_get_int(&queue_details, "burst",
+ 0)) {
+ /* This queue is consistent. */
+ hmap_insert(&consistent_queues, &sb_info->node,
+ hash_int(queue_id, 0));
+ break;
+ }
+ }
+
+ if (!is_queue_needed) {
+ netdev_delete_queue(netdev_phy, queue_id);
+ }
+ }
+
+ /* Create/Update queues. */
+ HMAP_FOR_EACH(sb_info, node, queue_map) {
+ if (hmap_contains(&consistent_queues, &sb_info->node)) {
+ hmap_remove(&consistent_queues, &sb_info->node);
+ continue;
+ }
+
+ smap_clear(&queue_details);
+ smap_add_format(&queue_details, "max-rate", "%d", sb_info->max_rate);
+ smap_add_format(&queue_details, "burst", "%d", sb_info->burst);
+ netdev_set_queue(netdev_phy, sb_info->queue_id, &queue_details);
+ }
+ smap_destroy(&queue_details);
+ hmap_destroy(&consistent_queues);
+ netdev_close(netdev_phy);
}
void
@@ -108,12 +247,15 @@ binding_run(struct controller_ctx *ctx, const struct
ovsrec_bridge *br_int,
{
const struct sbrec_chassis *chassis_rec;
const struct sbrec_port_binding *binding_rec;
+ struct ovs_list tunnel_ifaces = OVS_LIST_INITIALIZER(&tunnel_ifaces);
+ struct hmap qos_map;
chassis_rec = get_chassis(ctx->ovnsb_idl, chassis_id);
+ hmap_init(&qos_map);
struct shash lports = SHASH_INITIALIZER(&lports);
if (br_int) {
- get_local_iface_ids(br_int, &lports);
+ get_local_iface_ids(br_int, &lports, &tunnel_ifaces);
} else {
/* We have no integration bridge, therefore no local logical ports.
* We'll remove our chassis from all port binding records below. */
@@ -138,8 +280,10 @@ binding_run(struct controller_ctx *ctx, const struct
ovsrec_bridge *br_int,
sset_add(all_lports, binding_rec->logical_port);
}
add_local_datapath(local_datapaths, binding_rec);
- if (iface_rec && ctx->ovs_idl_txn) {
- update_qos(iface_rec, binding_rec);
+ if (iface_rec &&
+ !ovs_list_is_empty(&tunnel_ifaces) &&
+ ctx->ovs_idl_txn) {
+ get_qos_params(binding_rec, &qos_map);
}
if (ctx->ovnsb_idl_txn && chassis_rec
&& binding_rec->chassis != chassis_rec) {
@@ -175,6 +319,17 @@ binding_run(struct controller_ctx *ctx, const struct
ovsrec_bridge *br_int,
VLOG_DBG("No port binding record for lport %s", node->name);
}
+ if (!ovs_list_is_empty(&tunnel_ifaces)) {
+ const struct ovsrec_qos *noop_qos = get_noop_qos(ctx);
+ struct tunnel_iface_entry *entry;
+
+ LIST_FOR_EACH_POP(entry, node, &tunnel_ifaces) {
+ setup_qos(entry, noop_qos, &qos_map);
+ free(entry);
+ }
+ }
+
+ hmap_destroy(&qos_map);
shash_destroy(&lports);
}
diff --git a/ovn/lib/actions.c b/ovn/lib/actions.c
index 5f0bf19..f71848c 100644
--- a/ovn/lib/actions.c
+++ b/ovn/lib/actions.c
@@ -414,6 +414,33 @@ parse_put_arp_action(struct action_context *ctx)
}
static void
+parse_set_queue_action(struct action_context *ctx)
+{
+ int queue_id;
+
+ if (!lexer_match(ctx->lexer, LEX_T_LPAREN)) {
+ action_syntax_error(ctx, "expecting `('");
+ return;
+ }
+ if (!action_get_int(ctx, &queue_id)) {
+ return;
+ }
+ if (!lexer_match(ctx->lexer, LEX_T_RPAREN)) {
+ action_syntax_error(ctx, "expecting `)'");
+ return;
+ }
+ if (queue_id < QDISC_MIN_QUEUE_ID || queue_id > QDISC_MAX_QUEUE_ID) {
+ action_error(ctx, "Queue ID %d for set_queue is "
+ "not in valid range %d to %d.",
+ queue_id, QDISC_MIN_QUEUE_ID, QDISC_MAX_QUEUE_ID);
+ return;
+ }
+
+ struct ofpact_queue *set_queue = ofpact_put_SET_QUEUE(ctx->ofpacts);
+ set_queue->queue_id = queue_id;
+}
+
+static void
emit_ct(struct action_context *ctx, bool recirc_next, bool commit)
{
struct ofpact_conntrack *ct = ofpact_put_CT(ctx->ofpacts);
@@ -475,6 +502,8 @@ parse_action(struct action_context *ctx)
parse_get_arp_action(ctx);
} else if (lexer_match_id(ctx->lexer, "put_arp")) {
parse_put_arp_action(ctx);
+ } else if (lexer_match_id(ctx->lexer, "set_queue")) {
+ parse_set_queue_action(ctx);
} else {
action_syntax_error(ctx, "expecting action");
}
diff --git a/ovn/lib/actions.h b/ovn/lib/actions.h
index 29af06f..9e00366 100644
--- a/ovn/lib/actions.h
+++ b/ovn/lib/actions.h
@@ -22,6 +22,9 @@
#include "compiler.h"
#include "util.h"
+#define QDISC_MIN_QUEUE_ID (1)
+#define QDISC_MAX_QUEUE_ID (0xf000)
+
struct expr;
struct lexer;
struct ofpbuf;
diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c
index cac0148..793abc4 100644
--- a/ovn/northd/ovn-northd.c
+++ b/ovn/northd/ovn-northd.c
@@ -30,6 +30,7 @@
#include "ovn/lib/ovn-nb-idl.h"
#include "ovn/lib/ovn-sb-idl.h"
#include "ovn/lib/ovn-util.h"
+#include "ovn/lib/actions.h"
#include "packets.h"
#include "poll-loop.h"
#include "smap.h"
@@ -234,6 +235,78 @@ allocate_tnlid(struct hmap *set, const char *name,
uint32_t max,
return 0;
}
+struct ovn_chassis_qdisc_queues {
+ uint32_t queue_id;
+ struct hmap_node key_node;
+};
+
+static void
+destroy_chassis_queues(struct hmap *set)
+{
+ struct ovn_chassis_qdisc_queues *node;
+ HMAP_FOR_EACH_POP (node, key_node, set) {
+ free(node);
+ }
+ hmap_destroy(set);
+}
+
+static void
+add_chassis_queue(struct hmap *set, const char *chassis_name,
+ uint32_t queue_id)
+{
+ struct ovn_chassis_qdisc_queues *node = xmalloc(sizeof *node);
+ node->queue_id = queue_id;
+ hmap_insert(set, &node->key_node, hash_string(chassis_name, 0));
+}
+
+static bool
+chassis_queueid_in_use(const struct hmap *set, const char *chassis,
+ uint32_t queue_id)
+{
+ const struct ovn_chassis_qdisc_queues *node;
+ HMAP_FOR_EACH_WITH_HASH (node, key_node, hash_string(chassis, 0), set) {
+ if (node->queue_id == queue_id) {
+ return true;
+ }
+ }
+ return false;
+}
+
+static uint32_t
+allocate_chassis_queueid(struct hmap *set, const char *chassis)
+{
+ for (uint32_t queue_id = QDISC_MIN_QUEUE_ID;
+ queue_id <= QDISC_MAX_QUEUE_ID;
+ queue_id++) {
+ if (!chassis_queueid_in_use(set, chassis, queue_id)) {
+ add_chassis_queue(set, chassis, queue_id);
+ return queue_id;
+ }
+ }
+
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ VLOG_WARN_RL(&rl, "all %s queue ids exhausted", chassis);
+ return 0;
+}
+
+static void
+free_chassis_queueid(struct hmap *set, const char * chassis, uint32_t queue_id)
+{
+ struct ovn_chassis_qdisc_queues *node;
+ HMAP_FOR_EACH_WITH_HASH (node, key_node, hash_string(chassis, 0), set) {
+ if (node->queue_id == queue_id) {
+ hmap_remove(set, &node->key_node);
+ break;
+ }
+ }
+}
+
+static inline bool
+port_has_qos_params(struct smap * opts) {
+ return (smap_get(opts, "qos_max_rate") ||
+ smap_get(opts, "qos_burst"));
+}
+
/* The 'key' comes from nbs->header_.uuid or nbr->header_.uuid or
* sb->external_ids:logical-switch. */
struct ovn_datapath {
@@ -556,6 +629,7 @@ ovn_port_allocate_key(struct ovn_datapath *od)
static void
join_logical_ports(struct northd_context *ctx,
struct hmap *datapaths, struct hmap *ports,
+ struct hmap *chassis_qdisc_queues,
struct ovs_list *sb_only, struct ovs_list *nb_only,
struct ovs_list *both)
{
@@ -587,6 +661,15 @@ join_logical_ports(struct northd_context *ctx,
}
op->nbs = nbs;
ovs_list_remove(&op->list);
+
+ uint32_t queue_id = smap_get_int(&op->sb->options,
+ "qdisc_queue_id", 0);
+ if (queue_id && op->sb->chassis) {
+ add_chassis_queue(
+ chassis_qdisc_queues, op->sb->chassis->name,
+ queue_id);
+ }
+
ovs_list_push_back(both, &op->list);
} else {
op = ovn_port_create(ports, nbs->name, nbs, NULL, NULL);
@@ -686,7 +769,8 @@ join_logical_ports(struct northd_context *ctx,
}
static void
-ovn_port_update_sbrec(const struct ovn_port *op)
+ovn_port_update_sbrec(const struct ovn_port *op,
+ struct hmap *chassis_qdisc_queues)
{
sbrec_port_binding_set_datapath(op->sb, op->od->sb);
if (op->nbr) {
@@ -714,8 +798,31 @@ ovn_port_update_sbrec(const struct ovn_port *op)
sbrec_port_binding_set_mac(op->sb, NULL, 0);
} else {
if (strcmp(op->nbs->type, "router")) {
+ uint32_t queue_id = smap_get_int(
+ &op->sb->options, "qdisc_queue_id", 0);
+ struct smap options;
+
+ smap_clone(&options, &op->nbs->options);
+ if (op->sb->chassis && port_has_qos_params(&options)
+ && !queue_id) {
+ queue_id = allocate_chassis_queueid(chassis_qdisc_queues,
+ op->sb->chassis->name);
+ }
+ if (!port_has_qos_params(&options) && queue_id) {
+ /* Free this queue. */
+ free_chassis_queueid(chassis_qdisc_queues,
+ op->sb->chassis->name,
+ queue_id);
+ queue_id = 0;
+ }
+
+ if (queue_id) {
+ /* Only when there is a valid queue. */
+ smap_add_format(&options,
+ "qdisc_queue_id", "%d", queue_id);
+ }
sbrec_port_binding_set_type(op->sb, op->nbs->type);
- sbrec_port_binding_set_options(op->sb, &op->nbs->options);
+ sbrec_port_binding_set_options(op->sb, &options);
} else {
const char *chassis = NULL;
if (op->peer && op->peer->od && op->peer->od->nbr) {
@@ -762,14 +869,18 @@ build_ports(struct northd_context *ctx, struct hmap
*datapaths,
struct hmap *ports)
{
struct ovs_list sb_only, nb_only, both;
+ struct hmap chassis_qdisc_queues;
+
+ hmap_init(&chassis_qdisc_queues);
- join_logical_ports(ctx, datapaths, ports, &sb_only, &nb_only, &both);
+ join_logical_ports(ctx, datapaths, ports, &chassis_qdisc_queues,
+ &sb_only, &nb_only, &both);
/* For logical ports that are in both databases, update the southbound
* record based on northbound data. Also index the in-use tunnel_keys. */
struct ovn_port *op, *next;
LIST_FOR_EACH_SAFE (op, next, list, &both) {
- ovn_port_update_sbrec(op);
+ ovn_port_update_sbrec(op, &chassis_qdisc_queues);
add_tnlid(&op->od->port_tnlids, op->sb->tunnel_key);
if (op->sb->tunnel_key > op->od->port_key_hint) {
@@ -785,7 +896,7 @@ build_ports(struct northd_context *ctx, struct hmap
*datapaths,
}
op->sb = sbrec_port_binding_insert(ctx->ovnsb_txn);
- ovn_port_update_sbrec(op);
+ ovn_port_update_sbrec(op, &chassis_qdisc_queues);
sbrec_port_binding_set_logical_port(op->sb, op->key);
sbrec_port_binding_set_tunnel_key(op->sb, tunnel_key);
@@ -797,6 +908,8 @@ build_ports(struct northd_context *ctx, struct hmap
*datapaths,
sbrec_port_binding_delete(op->sb);
ovn_port_destroy(ports, op);
}
+
+ destroy_chassis_queues(&chassis_qdisc_queues);
}
#define OVN_MIN_MULTICAST 32768
@@ -1532,12 +1645,19 @@ build_lswitch_flows(struct hmap *datapaths, struct hmap
*ports,
}
struct ds match = DS_EMPTY_INITIALIZER;
+ struct ds action = DS_EMPTY_INITIALIZER;
+
ds_put_format(&match, "inport == %s", op->json_key);
build_port_security_l2(
"eth.src", op->nbs->port_security, op->nbs->n_port_security,
&match);
+ const char *queue_id = smap_get(&op->sb->options, "qdisc_queue_id");
+ if (queue_id) {
+ ds_put_format(&action, "set_queue(%s);", queue_id);
+ }
+ ds_put_cstr(&action, "next;");
ovn_lflow_add(lflows, op->od, S_SWITCH_IN_PORT_SEC_L2, 50,
- ds_cstr(&match), "next;");
+ ds_cstr(&match), ds_cstr(&action));
ds_destroy(&match);
if (op->nbs->n_port_security) {
diff --git a/ovn/ovn-nb.xml b/ovn/ovn-nb.xml
index 130b63b..9171c26 100644
--- a/ovn/ovn-nb.xml
+++ b/ovn/ovn-nb.xml
@@ -195,14 +195,14 @@
(empty string)
</p>
- <column name="options" key="policing_rate">
+ <column name="options" key="qos_max_rate">
If set, indicates the maximum rate for data sent from this interface,
- in kbps. Data exceeding this rate is dropped.
+ in bit/s. The traffic will be shaped according to this limit.
</column>
- <column name="options" key="policing_burst">
+ <column name="options" key="qos_burst">
If set, indicates the maximum burst size for data sent from this
- interface, in kb.
+ interface, in bits.
</column>
</group>
</group>
diff --git a/ovn/ovn-sb.xml b/ovn/ovn-sb.xml
index 1231b4e..df97680 100644
--- a/ovn/ovn-sb.xml
+++ b/ovn/ovn-sb.xml
@@ -1022,6 +1022,23 @@
<p><b>Example:</b> <code>put_arp(inport, arp.spa,
arp.sha);</code></p>
</dd>
+
+ <dt>
+ <code>set_queue(<var>queue_number</var>);</code>
+ </dt>
+
+ <dd>
+ <p>
+ <b>Parameters</b>: Queue number <var>queue_number</var>, 32-bit
+ </p>
+
+ <p>
+ This is equivalent to Openflow set_queue. queue_number should be
+ in the range of 1 to 61440
+ </p>
+
+ <p><b>Example:</b> <code>set_queue(10);</code></p>
+ </dd>
</dl>
<p>
@@ -1423,14 +1440,20 @@ tcp.flags = RST;
(empty string)
</p>
- <column name="options" key="policing_rate">
+ <column name="options" key="qos_max_rate">
If set, indicates the maximum rate for data sent from this interface,
- in kbps. Data exceeding this rate is dropped.
+ in bit/s. The traffic will be shaped according to this limit.
</column>
- <column name="options" key="policing_burst">
+ <column name="options" key="qos_burst">
If set, indicates the maximum burst size for data sent from this
- interface, in kb.
+ interface, in bits.
+ </column>
+
+ <column name="options" key="qdisc_queue_id">
+ Indicates the queue number on the physical device. This is same as the
+ queue_id used in OpenFlow in struct ofp_action_enqueue. Value should
+ be in the range of 1 to 61440.
</column>
</group>
--
2.5.0
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