2 * Copyright (c) 2015 Nicira, Inc.
3 * Copyright (c) 2014 WindRiver, Inc.
4 * Copyright (c) 2015 Avaya, Inc.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at:
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
19 /* Implementation of Auto Attach.
20 * Based on sample implementation in 802.1ab. Above copyright and license
21 * applies to all modifications.
23 * - No support for multiple bridge.
24 * - Auto Attach state machine not implemented.
25 * - Auto Attach and LLDP code are bundled together. The plan is to decoupled
31 #include <arpa/inet.h>
33 #include <netinet/in.h>
36 #include <sys/types.h>
37 #include "dynamic-string.h"
40 #include "lldp/lldpd.h"
41 #include "lldp/lldpd-structs.h"
43 #include "openvswitch/types.h"
45 #include "poll-loop.h"
49 #include "openvswitch/vlog.h"
51 VLOG_DEFINE_THIS_MODULE(ovs_lldp);
53 #define LLDP_PROTOCOL_ID 0x0000
54 #define LLDP_PROTOCOL_VERSION 0x00
55 #define LLDP_TYPE_CONFIG 0x00
56 #define LLDP_CHASSIS_TTL 120
57 #define ETH_TYPE_LLDP 0x88cc
58 #define MINIMUM_ETH_PACKET_SIZE 68
60 #define AA_STATUS_MULTIPLE \
61 AA_STATUS(ACTIVE,2,Active) \
62 AA_STATUS(REJECT_GENERIC,3,Reject (Generic)) \
63 AA_STATUS(REJECT_AA_RES_NOTAVAIL,4,Reject (AA resources unavailable)) \
64 AA_STATUS(REJECT_INVALID,6,Reject (Invalid)) \
65 AA_STATUS(REJECT_VLAN_RES_UNAVAIL,8,Reject (VLAN resources unavailable)) \
66 AA_STATUS(REJECT_VLAN_APP_ISSUE,9,Reject (Application interaction issue)) \
67 AA_STATUS(PENDING,255,Pending)
70 #define AA_STATUS(NAME, VALUE, STR) AA_STATUS_##NAME = VALUE,
76 /* Internal structure for an Auto Attach mapping.
78 struct aa_mapping_internal {
79 struct hmap_node hmap_node_isid;
80 struct hmap_node hmap_node_aux;
84 enum aa_status status;
87 static struct ovs_mutex mutex = OVS_MUTEX_INITIALIZER;
89 /* Hash map of all LLDP instances keyed by name (port at the moment).
91 static struct hmap all_lldps__ = HMAP_INITIALIZER(&all_lldps__);
92 static struct hmap *const all_lldps OVS_GUARDED_BY(mutex) = &all_lldps__;
94 /* Hash map of all the Auto Attach mappings. Global at the moment (but will
95 * be per bridge). Used when adding a new port to a bridge so that we can
96 * properly install all the configured mapping on the port and export them
97 * To the Auto Attach server via LLDP.
99 static struct hmap all_mappings__ = HMAP_INITIALIZER(&all_mappings__);
100 static struct hmap *const all_mappings OVS_GUARDED_BY(mutex) = &all_mappings__;
102 static struct lldp_aa_element_system_id system_id_null;
104 /* Convert an LLDP chassis ID to a string.
107 chassisid_to_string(uint8_t *array, size_t len, char **str)
111 *str = xmalloc(len * 3);
113 for (i = 0; i < len; i++) {
114 snprintf(&(*str)[i * 3], 4, "%02x:", array[i]);
116 (*str)[(i * 3) - 1] = '\0';
119 /* Find an Auto Attach mapping keyed by I-SID.
121 static struct aa_mapping_internal *
122 mapping_find_by_isid(struct lldp *lldp, const uint64_t isid)
125 struct aa_mapping_internal *m;
127 HMAP_FOR_EACH_IN_BUCKET (m,
129 hash_bytes(&isid, sizeof isid, 0),
130 &lldp->mappings_by_isid) {
131 if (isid == m->isid) {
139 /* Find an Auto Attach mapping keyed by aux. aux is an opaque pointer created
140 * by the bridge that refers to an OVSDB mapping record.
142 static struct aa_mapping_internal *
143 mapping_find_by_aux(struct lldp *lldp, const void *aux) OVS_REQUIRES(mutex)
145 struct aa_mapping_internal *m;
147 HMAP_FOR_EACH_IN_BUCKET (m, hmap_node_aux, hash_pointer(aux, 0),
148 &lldp->mappings_by_aux) {
157 /* Convert an Auto Attach request status to a string.
160 aa_status_to_str(uint8_t status)
163 #define AA_STATUS(NAME, VALUE, STR) case AA_STATUS_##NAME: return #STR;
166 default: return "Undefined";
170 /* Display LLDP and Auto Attach statistics.
173 aa_print_lldp_and_aa_stats(struct ds *ds, struct lldp *lldp)
176 struct lldpd_hardware *hw;
178 ds_put_format(ds, "Statistics: %s\n", lldp->name);
184 LIST_FOR_EACH (hw, h_entries, &lldp->lldpd->g_hardware.h_entries) {
185 ds_put_format(ds, "\ttx cnt: %"PRIu64"\n", hw->h_tx_cnt);
186 ds_put_format(ds, "\trx cnt: %"PRIu64"\n", hw->h_rx_cnt);
187 ds_put_format(ds, "\trx discarded cnt: %"PRIu64"\n",
188 hw->h_rx_discarded_cnt);
189 ds_put_format(ds, "\trx unrecognized cnt: %"PRIu64"\n",
190 hw->h_rx_unrecognized_cnt);
191 ds_put_format(ds, "\tageout cnt: %"PRIu64"\n", hw->h_ageout_cnt);
192 ds_put_format(ds, "\tinsert cnt: %"PRIu64"\n", hw->h_insert_cnt);
193 ds_put_format(ds, "\tdelete cnt: %"PRIu64"\n", hw->h_delete_cnt);
194 ds_put_format(ds, "\tdrop cnt: %"PRIu64"\n", hw->h_drop_cnt);
199 aa_print_element_status_port(struct ds *ds, struct lldpd_hardware *hw)
201 struct lldpd_port *port;
203 LIST_FOR_EACH (port, p_entries, &hw->h_rports.p_entries) {
204 if (memcmp(&port->p_element.system_id,
206 sizeof port->p_element.system_id)) {
207 static char *none_str = "<None>";
208 char *id = none_str, *descr = none_str, *system = none_str;
210 if (port->p_chassis) {
211 if (port->p_chassis->c_id_len > 0) {
212 chassisid_to_string((uint8_t *) port->p_chassis->c_id,
213 port->p_chassis->c_id_len, &id);
216 descr = port->p_chassis->c_descr
217 ? port->p_chassis->c_descr : none_str;
220 chassisid_to_string((uint8_t *) &port->p_element.system_id,
221 sizeof port->p_element.system_id, &system);
224 "\tAuto Attach Primary Server Id: %s\n",
227 "\tAuto Attach Primary Server Descr: %s\n",
230 "\tAuto Attach Primary Server System Id: %s\n",
239 /* Auto Attach server broadcast an LLDP message periodically. Display
240 * the discovered server.
243 aa_print_element_status(struct ds *ds, struct lldp *lldp) OVS_REQUIRES(mutex)
245 struct lldpd_hardware *hw;
247 ds_put_format(ds, "LLDP: %s\n", lldp->name);
253 LIST_FOR_EACH (hw, h_entries, &lldp->lldpd->g_hardware.h_entries) {
254 aa_print_element_status_port(ds, hw);
259 aa_print_isid_status_port_isid(struct lldp *lldp, struct lldpd_port *port)
262 struct lldpd_aa_isid_vlan_maps_tlv *mapping;
264 if (list_is_empty(&port->p_isid_vlan_maps)) {
268 LIST_FOR_EACH (mapping, m_entries, &port->p_isid_vlan_maps) {
269 uint32_t isid = mapping->isid_vlan_data.isid;
270 struct aa_mapping_internal *m = mapping_find_by_isid(lldp, isid);
272 VLOG_INFO("h_rport: isid=%u, vlan=%u, status=%d",
274 mapping->isid_vlan_data.vlan,
275 mapping->isid_vlan_data.status);
277 /* Update the status of our internal state for the mapping. */
279 VLOG_INFO("Setting status for ISID=%"PRIu32" to %"PRIu16,
280 isid, mapping->isid_vlan_data.status);
281 m->status = mapping->isid_vlan_data.status;
283 VLOG_WARN("Couldn't find mapping for I-SID=%"PRIu32, isid);
289 aa_print_isid_status_port(struct lldp *lldp, struct lldpd_hardware *hw)
292 struct lldpd_port *port;
294 LIST_FOR_EACH (port, p_entries, &hw->h_rports.p_entries) {
295 aa_print_isid_status_port_isid(lldp, port);
299 /* The Auto Attach server will broadcast the status of the configured mappings
300 * via LLDP. Display the status.
303 aa_print_isid_status(struct ds *ds, struct lldp *lldp) OVS_REQUIRES(mutex)
305 struct lldpd_hardware *hw;
306 struct aa_mapping_internal *m;
312 ds_put_format(ds, "LLDP: %s\n", lldp->name);
314 LIST_FOR_EACH (hw, h_entries, &lldp->lldpd->g_hardware.h_entries) {
315 aa_print_isid_status_port(lldp, hw);
318 ds_put_format(ds, "%-8s %-4s %-11s %-8s\n",
323 ds_put_format(ds, "-------- ---- ----------- --------\n");
325 HMAP_FOR_EACH (m, hmap_node_isid, &lldp->mappings_by_isid) {
326 ds_put_format(ds, "%-8ld %-4ld %-11s %-11s\n",
330 aa_status_to_str(m->status));
335 aa_unixctl_status(struct unixctl_conn *conn, int argc OVS_UNUSED,
336 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
340 struct ds ds = DS_EMPTY_INITIALIZER;
342 ovs_mutex_lock(&mutex);
344 HMAP_FOR_EACH (lldp, hmap_node, all_lldps) {
345 aa_print_element_status(&ds, lldp);
347 unixctl_command_reply(conn, ds_cstr(&ds));
350 ovs_mutex_unlock(&mutex);
354 aa_unixctl_show_isid(struct unixctl_conn *conn, int argc OVS_UNUSED,
355 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
359 struct ds ds = DS_EMPTY_INITIALIZER;
361 ovs_mutex_lock(&mutex);
363 HMAP_FOR_EACH (lldp, hmap_node, all_lldps) {
364 aa_print_isid_status(&ds, lldp);
366 unixctl_command_reply(conn, ds_cstr(&ds));
369 ovs_mutex_unlock(&mutex);
373 aa_unixctl_statistics(struct unixctl_conn *conn, int argc OVS_UNUSED,
374 const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
377 struct ds ds = DS_EMPTY_INITIALIZER;
380 ovs_mutex_lock(&mutex);
382 /* Cycle through all ports and dump the stats for each one */
383 HMAP_FOR_EACH (lldp, hmap_node, all_lldps) {
384 aa_print_lldp_and_aa_stats(&ds, lldp);
387 ovs_mutex_unlock(&mutex);
389 unixctl_command_reply(conn, ds_cstr(&ds));
392 /* An Auto Attach mapping was configured. Populate the corresponding
393 * structures in the LLDP hardware.
396 update_mapping_on_lldp(struct lldp *lldp, struct lldpd_hardware *hardware,
397 struct aa_mapping_internal *m)
399 struct lldpd_aa_isid_vlan_maps_tlv *lm = xzalloc(sizeof *lm);
401 if (hardware->h_ifname) {
402 VLOG_INFO("\t\t hardware->h_ifname=%s", hardware->h_ifname);
405 lm->isid_vlan_data.isid = m->isid;
406 lm->isid_vlan_data.vlan = m->vlan;
408 list_push_back(&hardware->h_lport.p_isid_vlan_maps, &lm->m_entries);
410 /* TODO Should be done in the Auto Attach state machine when a mapping goes
411 * from "pending" to "active".
414 struct bridge_aa_vlan *node = xmalloc(sizeof *node);
416 node->port_name = xstrdup(hardware->h_ifname);
417 node->vlan = m->vlan;
418 node->oper = BRIDGE_AA_VLAN_OPER_ADD;
420 list_push_back(&lldp->active_mapping_queue, &node->list_node);
424 /* Bridge will poll the list of VLAN that needs to be auto configure based on
425 * the Auto Attach mappings that have been exchanged with the server.
428 aa_get_vlan_queued(struct ovs_list *list)
432 ovs_mutex_lock(&mutex);
434 HMAP_FOR_EACH (lldp, hmap_node, all_lldps) {
435 struct bridge_aa_vlan *node, *node_next;
437 LIST_FOR_EACH_SAFE (node,
440 &lldp->active_mapping_queue) {
441 struct bridge_aa_vlan *copy;
443 copy = xmalloc(sizeof *copy);
444 copy->port_name = xstrdup(node->port_name);
445 copy->vlan = node->vlan;
446 copy->oper = node->oper;
448 list_push_back(list, ©->list_node);
451 list_remove(&node->list_node);
452 free(node->port_name);
457 ovs_mutex_unlock(&mutex);
462 /* Bridge will poll whether or not VLAN have been auto-configured.
465 aa_get_vlan_queue_size(void)
468 unsigned int size = 0;
470 ovs_mutex_lock(&mutex);
472 HMAP_FOR_EACH (lldp, hmap_node, all_lldps) {
473 size += list_size(&lldp->active_mapping_queue);
476 ovs_mutex_unlock(&mutex);
481 /* Configure Auto Attach.
484 aa_configure(const struct aa_settings *s)
488 ovs_mutex_lock(&mutex);
490 /* TODO Change all instances for now */
491 HMAP_FOR_EACH (lldp, hmap_node, all_lldps) {
492 struct lldpd_chassis *chassis;
494 LIST_FOR_EACH (chassis, list, &lldp->lldpd->g_chassis.list) {
495 /* System Description */
496 if (chassis->c_descr) {
497 free(chassis->c_descr);
499 chassis->c_descr = s->system_description[0] ?
500 xstrdup(s->system_description) : xstrdup(PACKAGE_STRING);
503 if (chassis->c_name) {
504 free(chassis->c_name);
506 chassis->c_name = xstrdup(s->system_name);
510 ovs_mutex_unlock(&mutex);
515 /* Add a new Auto Attach mapping.
518 aa_mapping_register(void *aux, const struct aa_mapping_settings *s)
520 struct aa_mapping_internal *bridge_m;
523 VLOG_INFO("Adding mapping ISID=%ld, VLAN=%ld, aux=%p", (long int) s->isid,
524 (long int) s->vlan, aux);
526 ovs_mutex_lock(&mutex);
528 /* TODO These mappings should be stores per bridge. This is used
529 * When a port is added. Auto Attach mappings need to be added on this
532 bridge_m = xzalloc(sizeof *bridge_m);
533 bridge_m->isid = s->isid;
534 bridge_m->vlan = s->vlan;
536 bridge_m->status = AA_STATUS_PENDING;
537 hmap_insert(all_mappings,
538 &bridge_m->hmap_node_isid,
539 hash_bytes((const void *) &bridge_m->isid,
540 sizeof bridge_m->isid,
543 /* Update mapping on the all the LLDP instances. */
544 HMAP_FOR_EACH (lldp, hmap_node, all_lldps) {
545 struct lldpd_hardware *hw;
546 struct aa_mapping_internal *m;
548 VLOG_INFO("\t lldp->name=%s", lldp->name);
550 if (mapping_find_by_isid(lldp, s->isid)) {
554 m = xzalloc(sizeof *m);
557 m->status = AA_STATUS_PENDING;
559 hmap_insert(&lldp->mappings_by_isid,
561 hash_bytes((const void *) &m->isid,
564 hmap_insert(&lldp->mappings_by_aux,
566 hash_pointer(m->aux, 0));
568 /* Configure the mapping on each port of the LLDP stack. */
569 LIST_FOR_EACH (hw, h_entries, &lldp->lldpd->g_hardware.h_entries) {
570 update_mapping_on_lldp(lldp, hw, m);
574 ovs_mutex_unlock(&mutex);
580 aa_mapping_unregister_mapping(struct lldp *lldp,
581 struct lldpd_hardware *hw,
582 struct aa_mapping_internal *m)
584 struct lldpd_aa_isid_vlan_maps_tlv *lm, *lm_next;
586 LIST_FOR_EACH_SAFE (lm, lm_next, m_entries,
587 &hw->h_lport.p_isid_vlan_maps) {
588 uint32_t isid = lm->isid_vlan_data.isid;
590 if (isid == (uint32_t) m->isid) {
591 VLOG_INFO("\t\t Removing lport, isid=%u, vlan=%u",
593 lm->isid_vlan_data.vlan);
595 list_remove(&lm->m_entries);
597 /* TODO Should be done in the AA SM when a mapping goes
598 * from "pending" to "active".
601 struct bridge_aa_vlan *node = xmalloc(sizeof *node);
603 node->port_name = xstrdup(hw->h_ifname);
604 node->vlan = (uint32_t) m->vlan;
605 node->oper = BRIDGE_AA_VLAN_OPER_REMOVE;
607 list_push_back(&lldp->active_mapping_queue, &node->list_node);
615 /* Remove an existing Auto Attach mapping.
618 aa_mapping_unregister(void *aux)
622 VLOG_INFO("Removing mapping aux=%p", aux);
624 ovs_mutex_lock(&mutex);
626 HMAP_FOR_EACH (lldp, hmap_node, all_lldps) {
627 struct lldpd_hardware *hw;
628 struct aa_mapping_internal *m = mapping_find_by_aux(lldp, aux);
629 int64_t isid_tmp = -1, vlan_tmp = -1;
631 /* Remove from internal hash tables. */
633 struct aa_mapping_internal *p =
634 mapping_find_by_isid(lldp, m->isid);
638 VLOG_INFO("\t Removing mapping ISID=%ld, VLAN=%ld (lldp->name=%s)",
639 (long int) m->isid, (long int) m->vlan, lldp->name);
642 hmap_remove(&lldp->mappings_by_isid, &p->hmap_node_isid);
645 hmap_remove(&lldp->mappings_by_aux, &m->hmap_node_aux);
648 /* Remove from all the lldp instances */
649 LIST_FOR_EACH (hw, h_entries, &lldp->lldpd->g_hardware.h_entries) {
651 VLOG_INFO("\t\t hardware->h_ifname=%s", hw->h_ifname);
654 aa_mapping_unregister_mapping(lldp, hw, m);
657 if (isid_tmp >= 0 && vlan_tmp >= 0) {
658 /* Remove from the all_mappings */
659 HMAP_FOR_EACH (m, hmap_node_isid, all_mappings) {
660 if (m && isid_tmp == m->isid && vlan_tmp == m->vlan) {
661 hmap_remove(all_mappings, &m->hmap_node_isid);
669 ovs_mutex_unlock(&mutex);
677 unixctl_command_register("autoattach/status", "[bridge]", 0, 1,
678 aa_unixctl_status, NULL);
679 unixctl_command_register("autoattach/show-isid", "[bridge]", 0, 1,
680 aa_unixctl_show_isid, NULL);
681 unixctl_command_register("autoattach/statistics", "[bridge]", 0, 1,
682 aa_unixctl_statistics, NULL);
685 /* Returns true if 'lldp' should process packets from 'flow'. Sets
686 * fields in 'wc' that were used to make the determination.
689 lldp_should_process_flow(const struct flow *flow)
691 return (flow->dl_type == htons(ETH_TYPE_LLDP));
695 /* Process an LLDP packet that was received on a bridge port.
698 lldp_process_packet(struct lldp *lldp, const struct dp_packet *p)
701 lldpd_recv(lldp->lldpd,
702 (struct lldpd_hardware *)
703 lldp->lldpd->g_hardware.h_entries.next,
709 /* This code is called periodically to check if the LLDP module has an LLDP
710 * message it wishes to send. It is called several times every second.
713 lldp_should_send_packet(struct lldp *cfg) OVS_EXCLUDED(mutex)
717 ovs_mutex_lock(&mutex);
718 ret = timer_expired(&cfg->tx_timer);
719 ovs_mutex_unlock(&mutex);
724 /* Returns the next wake up time.
727 lldp_wake_time(const struct lldp *lldp) OVS_EXCLUDED(mutex)
729 long long int retval;
735 ovs_mutex_lock(&mutex);
736 retval = lldp->tx_timer.t;
737 ovs_mutex_unlock(&mutex);
742 /* Put the monitor thread to sleep until it's next wake time.
745 lldp_wait(struct lldp *lldp) OVS_EXCLUDED(mutex)
747 long long int wake_time = lldp_wake_time(lldp);
748 poll_timer_wait_until(wake_time);
752 /* Prepare the LLDP packet to be sent on a bridge port.
755 lldp_put_packet(struct lldp *lldp, struct dp_packet *packet,
756 uint8_t eth_src[ETH_ADDR_LEN]) OVS_EXCLUDED(mutex)
758 struct lldpd *mylldpd = lldp->lldpd;
759 struct lldpd_hardware *hw = (struct lldpd_hardware *)
760 mylldpd->g_hardware.h_entries.next;
761 uint32_t lldp_size = 0;
762 static const uint8_t eth_addr_lldp[6] =
763 {0x01, 0x80, 0xC2, 0x00, 0x00, 0x0e};
765 ovs_mutex_lock(&mutex);
767 eth_compose(packet, eth_addr_lldp, eth_src, ETH_TYPE_LLDP, 0);
769 lldp_size = lldpd_send(hw, packet);
770 if (lldp_size + ETH_HEADER_LEN < MINIMUM_ETH_PACKET_SIZE) {
771 lldp_size = MINIMUM_ETH_PACKET_SIZE;
774 timer_set_duration(&lldp->tx_timer, lldp->lldpd->g_config.c_tx_interval);
775 ovs_mutex_unlock(&mutex);
778 /* Configures the LLDP stack.
781 lldp_configure(struct lldp *lldp) OVS_EXCLUDED(mutex)
784 ovs_mutex_lock(&mutex);
785 timer_set_expired(&lldp->tx_timer);
786 timer_set_duration(&lldp->tx_timer, LLDP_DEFAULT_TRANSMIT_INTERVAL_MS);
787 lldp->lldpd->g_config.c_tx_interval =
788 LLDP_DEFAULT_TRANSMIT_INTERVAL_MS;
789 ovs_mutex_unlock(&mutex);
795 /* Create an LLDP stack instance. At the moment there is one per bridge port.
798 lldp_create(const struct netdev *netdev,
800 const struct smap *cfg) OVS_EXCLUDED(mutex)
803 struct lldpd_chassis *lchassis;
804 struct lldpd_hardware *hw;
805 struct aa_mapping_internal *m;
807 if (!cfg || !smap_get_bool(cfg, "enable", false)) {
811 lldp = xzalloc(sizeof *lldp);
812 lldp->name = xstrdup(netdev_get_name(netdev));
813 lldp->lldpd = xzalloc(sizeof *lldp->lldpd);
815 hmap_init(&lldp->mappings_by_isid);
816 hmap_init(&lldp->mappings_by_aux);
817 list_init(&lldp->active_mapping_queue);
819 lchassis = xzalloc(sizeof *lchassis);
820 lchassis->c_cap_available = LLDP_CAP_BRIDGE;
821 lchassis->c_cap_enabled = LLDP_CAP_BRIDGE;
822 lchassis->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LLADDR;
823 lchassis->c_id_len = ETH_ADDR_LEN;
824 lchassis->c_id = xmalloc(ETH_ADDR_LEN);
825 netdev_get_etheraddr(netdev, (uint8_t *) lchassis->c_id);
827 list_init(&lchassis->c_mgmt);
828 lchassis->c_ttl = lldp->lldpd->g_config.c_tx_interval *
829 lldp->lldpd->g_config.c_tx_hold;
830 lchassis->c_ttl = LLDP_CHASSIS_TTL;
831 lldpd_assign_cfg_to_protocols(lldp->lldpd);
832 list_init(&lldp->lldpd->g_chassis.list);
833 list_push_back(&lldp->lldpd->g_chassis.list, &lchassis->list);
835 if ((hw = lldpd_alloc_hardware(lldp->lldpd,
836 (char *) netdev_get_name(netdev),
838 VLOG_WARN("Unable to allocate space for %s",
839 (char *) netdev_get_name(netdev));
843 ovs_refcount_init(&lldp->ref_cnt);
845 hw->h_flags |= IFF_RUNNING;
848 hw->h_lport.p_id_subtype = LLDP_PORTID_SUBTYPE_IFNAME;
849 hw->h_lport.p_id = xstrdup(netdev_get_name(netdev));
851 /* p_id is not necessarily a null terminated string. */
852 hw->h_lport.p_id_len = strlen(netdev_get_name(netdev));
854 /* Auto Attach element tlv */
855 hw->h_lport.p_element.type = LLDP_TLV_AA_ELEM_TYPE_TAG_CLIENT;
856 hw->h_lport.p_element.mgmt_vlan = 0;
857 memcpy(&hw->h_lport.p_element.system_id.system_mac,
858 lchassis->c_id, lchassis->c_id_len);
859 hw->h_lport.p_element.system_id.conn_type =
860 LLDP_TLV_AA_ELEM_CONN_TYPE_SINGLE;
862 hw->h_lport.p_element.system_id.smlt_id = 0;
863 hw->h_lport.p_element.system_id.mlt_id[0] = 0;
864 hw->h_lport.p_element.system_id.mlt_id[1] = 0;
866 list_init(&hw->h_lport.p_isid_vlan_maps);
867 list_init(&lldp->lldpd->g_hardware.h_entries);
868 list_push_back(&lldp->lldpd->g_hardware.h_entries, &hw->h_entries);
870 ovs_mutex_lock(&mutex);
872 /* Update port with Auto Attach mappings configured. */
873 HMAP_FOR_EACH (m, hmap_node_isid, all_mappings) {
874 struct aa_mapping_internal *p;
876 if (mapping_find_by_isid(lldp, m->isid)) {
880 p = xmemdup(m, sizeof *p);
881 hmap_insert(&lldp->mappings_by_isid,
883 hash_bytes((const void *) &p->isid,
886 hmap_insert(&lldp->mappings_by_aux,
888 hash_pointer(p->aux, 0));
890 update_mapping_on_lldp(lldp, hw, p);
893 hmap_insert(all_lldps, &lldp->hmap_node,
894 hash_string(netdev_get_name(netdev), 0));
896 ovs_mutex_unlock(&mutex);
903 lldp_create_dummy(void)
906 struct lldpd_chassis *lchassis;
907 struct lldpd_hardware *hw;
909 lldp = xzalloc(sizeof *lldp);
910 lldp->name = "dummy-lldp";
911 lldp->lldpd = xzalloc(sizeof *lldp->lldpd);
913 hmap_init(&lldp->mappings_by_isid);
914 hmap_init(&lldp->mappings_by_aux);
915 list_init(&lldp->active_mapping_queue);
917 lchassis = xzalloc(sizeof *lchassis);
918 lchassis->c_cap_available = LLDP_CAP_BRIDGE;
919 lchassis->c_cap_enabled = LLDP_CAP_BRIDGE;
920 lchassis->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LLADDR;
921 lchassis->c_id_len = ETH_ADDR_LEN;
922 lchassis->c_id = xmalloc(ETH_ADDR_LEN);
924 list_init(&lchassis->c_mgmt);
925 lchassis->c_ttl = LLDP_CHASSIS_TTL;
926 lldpd_assign_cfg_to_protocols(lldp->lldpd);
927 list_init(&lldp->lldpd->g_chassis.list);
928 list_push_back(&lldp->lldpd->g_chassis.list, &lchassis->list);
930 hw = lldpd_alloc_hardware(lldp->lldpd, "dummy-hw", 0);
932 ovs_refcount_init(&lldp->ref_cnt);
934 hw->h_flags |= IFF_RUNNING;
937 hw->h_lport.p_id_subtype = LLDP_PORTID_SUBTYPE_IFNAME;
938 hw->h_lport.p_id = "dummy-port";
940 /* p_id is not necessarily a null terminated string. */
941 hw->h_lport.p_id_len = strlen(hw->h_lport.p_id);
943 /* Auto Attach element tlv */
944 hw->h_lport.p_element.type = LLDP_TLV_AA_ELEM_TYPE_TAG_CLIENT;
945 hw->h_lport.p_element.mgmt_vlan = 0;
946 memcpy(&hw->h_lport.p_element.system_id.system_mac,
947 lchassis->c_id, lchassis->c_id_len);
948 hw->h_lport.p_element.system_id.conn_type =
949 LLDP_TLV_AA_ELEM_CONN_TYPE_SINGLE;
950 hw->h_lport.p_element.system_id.smlt_id = 0;
951 hw->h_lport.p_element.system_id.mlt_id[0] = 0;
952 hw->h_lport.p_element.system_id.mlt_id[1] = 0;
954 list_init(&hw->h_lport.p_isid_vlan_maps);
955 list_init(&lldp->lldpd->g_hardware.h_entries);
956 list_push_back(&lldp->lldpd->g_hardware.h_entries, &hw->h_entries);
961 /* Unreference a specific LLDP instance.
964 lldp_unref(struct lldp *lldp)
970 ovs_mutex_lock(&mutex);
971 if (ovs_refcount_unref_relaxed(&lldp->ref_cnt) != 1) {
972 ovs_mutex_unlock(&mutex);
976 hmap_remove(all_lldps, &lldp->hmap_node);
977 ovs_mutex_unlock(&mutex);
979 lldpd_cleanup(lldp->lldpd);
985 /* Unreference a specific LLDP instance.
988 lldp_ref(const struct lldp *lldp_)
990 struct lldp *lldp = CONST_CAST(struct lldp *, lldp_);
992 ovs_refcount_ref(&lldp->ref_cnt);