1 /* Copyright (c) 2011 Nicira Networks
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
22 #include "dynamic-string.h"
27 #include "poll-loop.h"
34 VLOG_DEFINE_THIS_MODULE(lacp);
36 /* Masks for lacp_info state member. */
37 #define LACP_STATE_ACT 0x01 /* Activity. Active or passive? */
38 #define LACP_STATE_TIME 0x02 /* Timeout. Short or long timeout? */
39 #define LACP_STATE_AGG 0x04 /* Aggregation. Is the link is bondable? */
40 #define LACP_STATE_SYNC 0x08 /* Synchronization. Is the link in up to date? */
41 #define LACP_STATE_COL 0x10 /* Collecting. Is the link receiving frames? */
42 #define LACP_STATE_DIST 0x20 /* Distributing. Is the link sending frames? */
43 #define LACP_STATE_DEF 0x40 /* Defaulted. Using default partner info? */
44 #define LACP_STATE_EXP 0x80 /* Expired. Using expired partner info? */
46 #define LACP_FAST_TIME_TX 1000 /* Fast transmission rate. */
47 #define LACP_SLOW_TIME_TX 30000 /* Slow transmission rate. */
48 #define LACP_RX_MULTIPLIER 3 /* Multiply by TX rate to get RX rate. */
50 #define LACP_INFO_LEN 15
52 ovs_be16 sys_priority; /* System priority. */
53 uint8_t sys_id[ETH_ADDR_LEN]; /* System ID. */
54 ovs_be16 key; /* Operational key. */
55 ovs_be16 port_priority; /* Port priority. */
56 ovs_be16 port_id; /* Port ID. */
57 uint8_t state; /* State mask. See LACP_STATE macros. */
58 } __attribute__((packed));
59 BUILD_ASSERT_DECL(LACP_INFO_LEN == sizeof(struct lacp_info));
61 #define LACP_PDU_LEN 110
63 uint8_t subtype; /* Always 1. */
64 uint8_t version; /* Always 1. */
66 uint8_t actor_type; /* Always 1. */
67 uint8_t actor_len; /* Always 20. */
68 struct lacp_info actor; /* LACP actor information. */
69 uint8_t z1[3]; /* Reserved. Always 0. */
71 uint8_t partner_type; /* Always 2. */
72 uint8_t partner_len; /* Always 20. */
73 struct lacp_info partner; /* LACP partner information. */
74 uint8_t z2[3]; /* Reserved. Always 0. */
76 uint8_t collector_type; /* Always 3. */
77 uint8_t collector_len; /* Always 16. */
78 ovs_be16 collector_delay; /* Maximum collector delay. Set to UINT16_MAX. */
79 uint8_t z3[64]; /* Combination of several fields. Always 0. */
80 } __attribute__((packed));
81 BUILD_ASSERT_DECL(LACP_PDU_LEN == sizeof(struct lacp_pdu));
86 LACP_CURRENT, /* Current State. Partner up to date. */
87 LACP_EXPIRED, /* Expired State. Partner out of date. */
88 LACP_DEFAULTED, /* Defaulted State. No partner. */
92 struct list node; /* Node in all_lacps list. */
93 char *name; /* Name of this lacp object. */
94 uint8_t sys_id[ETH_ADDR_LEN]; /* System ID. */
95 uint16_t sys_priority; /* System Priority. */
96 bool active; /* Active or Passive. */
98 struct hmap slaves; /* Slaves this LACP object controls. */
99 struct slave *key_slave; /* Slave whose ID will be the aggregation key. */
101 enum lacp_time lacp_time; /* Fast, Slow or Custom LACP time. */
102 long long int custom_time; /* LACP_TIME_CUSTOM transmission rate. */
103 bool negotiated; /* True if LACP negotiations were successful. */
104 bool update; /* True if lacp_update() needs to be called. */
105 bool heartbeat; /* LACP heartbeat mode. */
109 void *aux; /* Handle used to identify this slave. */
110 struct hmap_node node; /* Node in master's slaves map. */
112 struct lacp *lacp; /* LACP object containing this slave. */
113 uint16_t port_id; /* Port ID. */
114 uint16_t port_priority; /* Port Priority. */
115 uint16_t key; /* Aggregation Key. 0 if default. */
116 char *name; /* Name of this slave. */
118 enum slave_status status; /* Slave status. */
119 bool attached; /* Attached. Traffic may flow. */
120 struct lacp_info partner; /* Partner information. */
121 struct lacp_info ntt_actor; /* Used to decide if we Need To Transmit. */
122 struct timer tx; /* Next message transmission timer. */
123 struct timer rx; /* Expected message receive timer. */
126 static struct list all_lacps = LIST_INITIALIZER(&all_lacps);
128 static void lacp_update_attached(struct lacp *);
130 static void slave_destroy(struct slave *);
131 static void slave_set_defaulted(struct slave *);
132 static void slave_set_expired(struct slave *);
133 static void slave_get_actor(struct slave *, struct lacp_info *actor);
134 static void slave_get_priority(struct slave *, struct lacp_info *priority);
135 static bool slave_may_tx(const struct slave *);
136 static struct slave *slave_lookup(const struct lacp *, const void *slave);
137 static bool info_tx_equal(struct lacp_info *, struct lacp_info *);
139 static void lacp_unixctl_show(struct unixctl_conn *, const char *args,
142 /* Populates 'pdu' with a LACP PDU comprised of 'actor' and 'partner'. */
144 compose_lacp_pdu(const struct lacp_info *actor,
145 const struct lacp_info *partner, struct lacp_pdu *pdu)
147 memset(pdu, 0, sizeof *pdu);
156 pdu->partner_type = 2;
157 pdu->partner_len = 20;
158 pdu->partner = *partner;
160 pdu->collector_type = 3;
161 pdu->collector_len = 16;
162 pdu->collector_delay = htons(0);
165 /* Parses 'b' which represents a packet containing a LACP PDU. This function
166 * returns NULL if 'b' is malformed, or does not represent a LACP PDU format
167 * supported by OVS. Otherwise, it returns a pointer to the lacp_pdu contained
169 static const struct lacp_pdu *
170 parse_lacp_packet(const struct ofpbuf *b)
172 const struct lacp_pdu *pdu;
174 pdu = ofpbuf_at(b, (uint8_t *)b->l3 - (uint8_t *)b->data, LACP_PDU_LEN);
176 if (pdu && pdu->subtype == 1
177 && pdu->actor_type == 1 && pdu->actor_len == 20
178 && pdu->partner_type == 2 && pdu->partner_len == 20) {
185 /* LACP Protocol Implementation. */
187 /* Initializes the lacp module. */
191 unixctl_command_register("lacp/show", "[port]", lacp_unixctl_show, NULL);
194 /* Creates a LACP object. */
200 lacp = xzalloc(sizeof *lacp);
201 hmap_init(&lacp->slaves);
202 list_push_back(&all_lacps, &lacp->node);
206 /* Destroys 'lacp' and its slaves. Does nothing if 'lacp' is NULL. */
208 lacp_destroy(struct lacp *lacp)
211 struct slave *slave, *next;
213 HMAP_FOR_EACH_SAFE (slave, next, node, &lacp->slaves) {
214 slave_destroy(slave);
217 hmap_destroy(&lacp->slaves);
218 list_remove(&lacp->node);
224 /* Configures 'lacp' with settings from 's'. */
226 lacp_configure(struct lacp *lacp, const struct lacp_settings *s)
228 assert(!eth_addr_is_zero(s->id));
230 if (!lacp->name || strcmp(s->name, lacp->name)) {
232 lacp->name = xstrdup(s->name);
235 if (!eth_addr_equals(lacp->sys_id, s->id)
236 || lacp->sys_priority != s->priority
237 || lacp->heartbeat != s->heartbeat) {
238 memcpy(lacp->sys_id, s->id, ETH_ADDR_LEN);
239 lacp->sys_priority = s->priority;
240 lacp->heartbeat = s->heartbeat;
244 lacp->active = s->active;
245 lacp->lacp_time = s->lacp_time;
246 lacp->custom_time = MAX(TIME_UPDATE_INTERVAL, s->custom_time);
249 /* Returns true if 'lacp' is configured in active mode, false if 'lacp' is
250 * configured for passive mode. */
252 lacp_is_active(const struct lacp *lacp)
257 /* Processes 'packet' which was received on 'slave_'. This function should be
258 * called on all packets received on 'slave_' with Ethernet Type ETH_TYPE_LACP.
261 lacp_process_packet(struct lacp *lacp, const void *slave_,
262 const struct ofpbuf *packet)
264 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
265 struct slave *slave = slave_lookup(lacp, slave_);
266 const struct lacp_pdu *pdu;
267 long long int tx_rate;
269 pdu = parse_lacp_packet(packet);
271 VLOG_WARN_RL(&rl, "%s: received an unparsable LACP PDU.", lacp->name);
275 switch (lacp->lacp_time) {
277 tx_rate = LACP_FAST_TIME_TX;
280 tx_rate = LACP_SLOW_TIME_TX;
282 case LACP_TIME_CUSTOM:
283 tx_rate = lacp->custom_time;
285 default: NOT_REACHED();
288 slave->status = LACP_CURRENT;
289 timer_set_duration(&slave->rx, LACP_RX_MULTIPLIER * tx_rate);
291 slave->ntt_actor = pdu->partner;
293 /* Update our information about our partner if it's out of date. This may
294 * cause priorities to change so re-calculate attached status of all
296 if (memcmp(&slave->partner, &pdu->actor, sizeof pdu->actor)) {
298 slave->partner = pdu->actor;
302 /* Returns true if 'lacp' has successfully negotiated with its partner. False
303 * if 'lacp' is NULL. */
305 lacp_negotiated(const struct lacp *lacp)
307 return lacp ? lacp->negotiated : false;
310 /* Registers 'slave_' as subordinate to 'lacp'. This should be called at least
311 * once per slave in a LACP managed bond. Should also be called whenever a
312 * slave's settings change. */
314 lacp_slave_register(struct lacp *lacp, void *slave_,
315 const struct lacp_slave_settings *s)
317 struct slave *slave = slave_lookup(lacp, slave_);
320 slave = xzalloc(sizeof *slave);
323 hmap_insert(&lacp->slaves, &slave->node, hash_pointer(slave_, 0));
324 slave_set_defaulted(slave);
326 if (!lacp->key_slave) {
327 lacp->key_slave = slave;
331 if (!slave->name || strcmp(s->name, slave->name)) {
333 slave->name = xstrdup(s->name);
336 if (slave->port_id != s->id
337 || slave->port_priority != s->priority
338 || slave->key != s->key) {
339 slave->port_id = s->id;
340 slave->port_priority = s->priority;
345 if (lacp->active || lacp->negotiated) {
346 slave_set_expired(slave);
351 /* Unregisters 'slave_' with 'lacp'. */
353 lacp_slave_unregister(struct lacp *lacp, const void *slave_)
355 struct slave *slave = slave_lookup(lacp, slave_);
358 slave_destroy(slave);
363 /* This function should be called whenever the carrier status of 'slave_' has
366 lacp_slave_carrier_changed(const struct lacp *lacp, const void *slave_)
368 struct slave *slave = slave_lookup(lacp, slave_);
370 if (slave->status == LACP_CURRENT || slave->lacp->active) {
371 slave_set_expired(slave);
375 /* This function should be called before enabling 'slave_' to send or receive
376 * traffic. If it returns false, 'slave_' should not enabled. As a
377 * convenience, returns true if 'lacp' is NULL. */
379 lacp_slave_may_enable(const struct lacp *lacp, const void *slave_)
382 struct slave *slave = slave_lookup(lacp, slave_);
384 /* The slave may be enabled if it's attached to an aggregator and its
385 * partner is synchronized. The only exception is defaulted slaves.
386 * They are not required to have synchronized partners because they
387 * have no partners at all. They will only be attached if negotiations
388 * failed on all slaves in the bond. */
389 return slave->attached && (slave->partner.state & LACP_STATE_SYNC
390 || slave->status == LACP_DEFAULTED);
396 /* Returns the port ID used for 'slave_' in LACP communications. */
398 lacp_slave_get_port_id(const struct lacp *lacp, const void *slave_)
400 struct slave *slave = slave_lookup(lacp, slave_);
401 return slave->port_id;
404 /* Returns true if partner information on 'slave_' is up to date. 'slave_'
405 * not being current, generally indicates a connectivity problem, or a
406 * misconfigured (or broken) partner. */
408 lacp_slave_is_current(const struct lacp *lacp, const void *slave_)
410 return slave_lookup(lacp, slave_)->status != LACP_DEFAULTED;
413 /* This function should be called periodically to update 'lacp'. */
415 lacp_run(struct lacp *lacp, lacp_send_pdu *send_pdu)
419 HMAP_FOR_EACH (slave, node, &lacp->slaves) {
420 if (timer_expired(&slave->rx)) {
421 if (slave->status == LACP_CURRENT) {
422 slave_set_expired(slave);
423 } else if (slave->status == LACP_EXPIRED) {
424 slave_set_defaulted(slave);
430 lacp_update_attached(lacp);
433 HMAP_FOR_EACH (slave, node, &lacp->slaves) {
434 struct lacp_info actor;
436 if (!slave_may_tx(slave)) {
440 slave_get_actor(slave, &actor);
442 if (timer_expired(&slave->tx)
443 || !info_tx_equal(&actor, &slave->ntt_actor)) {
444 long long int duration;
447 slave->ntt_actor = actor;
448 compose_lacp_pdu(&actor, &slave->partner, &pdu);
449 send_pdu(slave->aux, &pdu, sizeof pdu);
451 if (lacp->lacp_time == LACP_TIME_CUSTOM) {
452 duration = lacp->custom_time;
454 duration = (slave->partner.state & LACP_STATE_TIME
456 : LACP_SLOW_TIME_TX);
459 timer_set_duration(&slave->tx, duration);
464 /* Causes poll_block() to wake up when lacp_run() needs to be called again. */
466 lacp_wait(struct lacp *lacp)
470 HMAP_FOR_EACH (slave, node, &lacp->slaves) {
471 if (slave_may_tx(slave)) {
472 timer_wait(&slave->tx);
475 if (slave->status != LACP_DEFAULTED) {
476 timer_wait(&slave->rx);
481 /* Static Helpers. */
483 /* Updates the attached status of all slaves controlled by 'lacp' and sets its
484 * negotiated parameter to true if any slaves are attachable. */
486 lacp_update_attached(struct lacp *lacp)
488 struct slave *lead, *slave;
489 struct lacp_info lead_pri;
490 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
492 if (lacp->heartbeat) {
493 HMAP_FOR_EACH (slave, node, &lacp->slaves) {
494 slave->attached = slave->status != LACP_DEFAULTED;
499 lacp->update = false;
502 HMAP_FOR_EACH (slave, node, &lacp->slaves) {
503 struct lacp_info pri;
505 slave->attached = true;
507 /* XXX: In the future allow users to configure the expected system ID.
508 * For now just special case loopback. */
509 if (eth_addr_equals(slave->partner.sys_id, slave->lacp->sys_id)) {
510 VLOG_WARN_RL(&rl, "slave %s: Loopback detected. Slave is "
511 "connected to its own bond", slave->name);
512 slave->attached = false;
516 if (slave->status == LACP_DEFAULTED) {
520 slave_get_priority(slave, &pri);
522 if (!lead || memcmp(&pri, &lead_pri, sizeof pri) < 0) {
528 lacp->negotiated = lead != NULL;
531 HMAP_FOR_EACH (slave, node, &lacp->slaves) {
532 if (slave->status == LACP_DEFAULTED
533 || lead->partner.key != slave->partner.key
534 || !eth_addr_equals(lead->partner.sys_id,
535 slave->partner.sys_id)) {
536 slave->attached = false;
543 slave_destroy(struct slave *slave)
546 struct lacp *lacp = slave->lacp;
549 hmap_remove(&lacp->slaves, &slave->node);
551 if (lacp->key_slave == slave) {
552 struct hmap_node *slave_node = hmap_first(&lacp->slaves);
555 lacp->key_slave = CONTAINER_OF(slave_node, struct slave, node);
557 lacp->key_slave = NULL;
567 slave_set_defaulted(struct slave *slave)
569 memset(&slave->partner, 0, sizeof slave->partner);
571 slave->lacp->update = true;
572 slave->status = LACP_DEFAULTED;
576 slave_set_expired(struct slave *slave)
578 struct lacp *lacp = slave->lacp;
580 slave->status = LACP_EXPIRED;
581 slave->partner.state |= LACP_STATE_TIME;
582 slave->partner.state &= ~LACP_STATE_SYNC;
584 /* The spec says we should wait LACP_RX_MULTIPLIER * LACP_FAST_TIME_TX.
585 * This doesn't make sense when using custom times which can be much
586 * smaller than LACP_FAST_TIME. */
587 timer_set_duration(&slave->rx, (lacp->lacp_time == LACP_TIME_CUSTOM
589 : LACP_RX_MULTIPLIER * LACP_FAST_TIME_TX));
593 slave_get_actor(struct slave *slave, struct lacp_info *actor)
595 struct lacp *lacp = slave->lacp;
600 state |= LACP_STATE_ACT;
603 if (lacp->lacp_time != LACP_TIME_SLOW) {
604 state |= LACP_STATE_TIME;
607 if (slave->attached) {
608 state |= LACP_STATE_SYNC;
611 if (slave->status == LACP_DEFAULTED) {
612 state |= LACP_STATE_DEF;
615 if (slave->status == LACP_EXPIRED) {
616 state |= LACP_STATE_EXP;
619 if (lacp->heartbeat || hmap_count(&lacp->slaves) > 1) {
620 state |= LACP_STATE_AGG;
623 if (slave->attached || !lacp->negotiated) {
624 state |= LACP_STATE_COL | LACP_STATE_DIST;
627 key = lacp->key_slave->key;
629 key = lacp->key_slave->port_id;
632 actor->state = state;
633 actor->key = htons(key);
634 actor->port_priority = htons(slave->port_priority);
635 actor->port_id = htons(slave->port_id);
636 actor->sys_priority = htons(lacp->sys_priority);
637 memcpy(&actor->sys_id, lacp->sys_id, ETH_ADDR_LEN);
640 /* Given 'slave', populates 'priority' with data representing its LACP link
641 * priority. If two priority objects populated by this function are compared
642 * using memcmp, the higher priority link will be less than the lower priority
645 slave_get_priority(struct slave *slave, struct lacp_info *priority)
647 uint16_t partner_priority, actor_priority;
649 /* Choose the lacp_info of the higher priority system by comparing their
650 * system priorities and mac addresses. */
651 actor_priority = slave->lacp->sys_priority;
652 partner_priority = ntohs(slave->partner.sys_priority);
653 if (actor_priority < partner_priority) {
654 slave_get_actor(slave, priority);
655 } else if (partner_priority < actor_priority) {
656 *priority = slave->partner;
657 } else if (eth_addr_compare_3way(slave->lacp->sys_id,
658 slave->partner.sys_id) < 0) {
659 slave_get_actor(slave, priority);
661 *priority = slave->partner;
664 /* Key and state are not used in priority comparisons. */
670 slave_may_tx(const struct slave *slave)
672 return slave->lacp->active || slave->status != LACP_DEFAULTED;
675 static struct slave *
676 slave_lookup(const struct lacp *lacp, const void *slave_)
680 HMAP_FOR_EACH_IN_BUCKET (slave, node, hash_pointer(slave_, 0),
682 if (slave->aux == slave_) {
690 /* Two lacp_info structures are tx_equal if and only if they do not differ in
691 * ways which would require a lacp_pdu transmission. */
693 info_tx_equal(struct lacp_info *a, struct lacp_info *b)
696 /* LACP specification dictates that we transmit whenever the actor and
697 * remote_actor differ in the following fields: Port, Port Priority,
698 * System, System Priority, Aggregation Key, Activity State, Timeout State,
699 * Sync State, and Aggregation State. The state flags are most likely to
700 * change so are checked first. */
701 return !((a->state ^ b->state) & (LACP_STATE_ACT
705 && a->port_id == b->port_id
706 && a->port_priority == b->port_priority
708 && a->sys_priority == b->sys_priority
709 && eth_addr_equals(a->sys_id, b->sys_id);
713 lacp_find(const char *name)
717 LIST_FOR_EACH (lacp, node, &all_lacps) {
718 if (!strcmp(lacp->name, name)) {
727 ds_put_lacp_state(struct ds *ds, uint8_t state)
729 if (state & LACP_STATE_ACT) {
730 ds_put_cstr(ds, " activity");
733 if (state & LACP_STATE_TIME) {
734 ds_put_cstr(ds, " timeout");
737 if (state & LACP_STATE_AGG) {
738 ds_put_cstr(ds, " aggregation");
741 if (state & LACP_STATE_SYNC) {
742 ds_put_cstr(ds, " synchronized");
745 if (state & LACP_STATE_COL) {
746 ds_put_cstr(ds, " collecting");
749 if (state & LACP_STATE_DIST) {
750 ds_put_cstr(ds, " distributing");
753 if (state & LACP_STATE_DEF) {
754 ds_put_cstr(ds, " defaulted");
757 if (state & LACP_STATE_EXP) {
758 ds_put_cstr(ds, " expired");
763 lacp_print_details(struct ds *ds, struct lacp *lacp)
765 struct shash slave_shash = SHASH_INITIALIZER(&slave_shash);
766 const struct shash_node **sorted_slaves = NULL;
771 ds_put_format(ds, "---- %s ----\n", lacp->name);
772 ds_put_format(ds, "\tstatus: %s", lacp->active ? "active" : "passive");
773 if (lacp->heartbeat) {
774 ds_put_cstr(ds, " heartbeat");
776 if (lacp->negotiated) {
777 ds_put_cstr(ds, " negotiated");
779 ds_put_cstr(ds, "\n");
781 ds_put_format(ds, "\tsys_id: " ETH_ADDR_FMT "\n", ETH_ADDR_ARGS(lacp->sys_id));
782 ds_put_format(ds, "\tsys_priority: %u\n", lacp->sys_priority);
783 ds_put_cstr(ds, "\taggregation key: ");
784 if (lacp->key_slave) {
785 ds_put_format(ds, "%u", lacp->key_slave->port_id);
787 ds_put_cstr(ds, "none");
789 ds_put_cstr(ds, "\n");
791 ds_put_cstr(ds, "\tlacp_time: ");
792 switch (lacp->lacp_time) {
794 ds_put_cstr(ds, "fast\n");
797 ds_put_cstr(ds, "slow\n");
799 case LACP_TIME_CUSTOM:
800 ds_put_format(ds, "custom (%lld)\n", lacp->custom_time);
803 ds_put_cstr(ds, "unknown\n");
806 HMAP_FOR_EACH (slave, node, &lacp->slaves) {
807 shash_add(&slave_shash, slave->name, slave);
809 sorted_slaves = shash_sort(&slave_shash);
811 for (i = 0; i < shash_count(&slave_shash); i++) {
813 struct lacp_info actor;
815 slave = sorted_slaves[i]->data;
816 slave_get_actor(slave, &actor);
817 switch (slave->status) {
825 status = "defaulted";
831 ds_put_format(ds, "\nslave: %s: %s %s\n", slave->name, status,
832 slave->attached ? "attached" : "detached");
833 ds_put_format(ds, "\tport_id: %u\n", slave->port_id);
834 ds_put_format(ds, "\tport_priority: %u\n", slave->port_priority);
836 ds_put_format(ds, "\n\tactor sys_id: " ETH_ADDR_FMT "\n",
837 ETH_ADDR_ARGS(actor.sys_id));
838 ds_put_format(ds, "\tactor sys_priority: %u\n",
839 ntohs(actor.sys_priority));
840 ds_put_format(ds, "\tactor port_id: %u\n",
841 ntohs(actor.port_id));
842 ds_put_format(ds, "\tactor port_priority: %u\n",
843 ntohs(actor.port_priority));
844 ds_put_format(ds, "\tactor key: %u\n",
846 ds_put_cstr(ds, "\tactor state:");
847 ds_put_lacp_state(ds, actor.state);
848 ds_put_cstr(ds, "\n\n");
850 ds_put_format(ds, "\tpartner sys_id: " ETH_ADDR_FMT "\n",
851 ETH_ADDR_ARGS(slave->partner.sys_id));
852 ds_put_format(ds, "\tpartner sys_priority: %u\n",
853 ntohs(slave->partner.sys_priority));
854 ds_put_format(ds, "\tpartner port_id: %u\n",
855 ntohs(slave->partner.port_id));
856 ds_put_format(ds, "\tpartner port_priority: %u\n",
857 ntohs(slave->partner.port_priority));
858 ds_put_format(ds, "\tpartner key: %u\n",
859 ntohs(slave->partner.key));
860 ds_put_cstr(ds, "\tpartner state:");
861 ds_put_lacp_state(ds, slave->partner.state);
862 ds_put_cstr(ds, "\n");
865 shash_destroy(&slave_shash);
870 lacp_unixctl_show(struct unixctl_conn *conn,
871 const char *args, void *aux OVS_UNUSED)
873 struct ds ds = DS_EMPTY_INITIALIZER;
877 lacp = lacp_find(args);
879 unixctl_command_reply(conn, 501, "no such lacp object");
882 lacp_print_details(&ds, lacp);
884 LIST_FOR_EACH (lacp, node, &all_lacps) {
885 lacp_print_details(&ds, lacp);
889 unixctl_command_reply(conn, 200, ds_cstr(&ds));