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 "openvswitch/dynamic-string.h"
39 #include "openvswitch/list.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
, uint32_t isid
)
125 struct aa_mapping_internal
*m
;
127 HMAP_FOR_EACH_IN_BUCKET (m
, hmap_node_isid
, hash_int(isid
, 0),
128 &lldp
->mappings_by_isid
) {
129 if (isid
== m
->isid
) {
137 /* Find an Auto Attach mapping keyed by aux. aux is an opaque pointer created
138 * by the bridge that refers to an OVSDB mapping record.
140 static struct aa_mapping_internal
*
141 mapping_find_by_aux(struct lldp
*lldp
, const void *aux
) OVS_REQUIRES(mutex
)
143 struct aa_mapping_internal
*m
;
145 HMAP_FOR_EACH_IN_BUCKET (m
, hmap_node_aux
, hash_pointer(aux
, 0),
146 &lldp
->mappings_by_aux
) {
155 /* Convert an Auto Attach request status to a string.
158 aa_status_to_str(uint8_t status
)
161 #define AA_STATUS(NAME, VALUE, STR) case AA_STATUS_##NAME: return #STR;
164 default: return "Undefined";
168 /* Display LLDP and Auto Attach statistics.
171 aa_print_lldp_and_aa_stats(struct ds
*ds
, struct lldp
*lldp
)
174 struct lldpd_hardware
*hw
;
176 ds_put_format(ds
, "Statistics: %s\n", lldp
->name
);
182 LIST_FOR_EACH (hw
, h_entries
, &lldp
->lldpd
->g_hardware
) {
183 ds_put_format(ds
, "\ttx cnt: %"PRIu64
"\n", hw
->h_tx_cnt
);
184 ds_put_format(ds
, "\trx cnt: %"PRIu64
"\n", hw
->h_rx_cnt
);
185 ds_put_format(ds
, "\trx discarded cnt: %"PRIu64
"\n",
186 hw
->h_rx_discarded_cnt
);
187 ds_put_format(ds
, "\trx unrecognized cnt: %"PRIu64
"\n",
188 hw
->h_rx_unrecognized_cnt
);
189 ds_put_format(ds
, "\tageout cnt: %"PRIu64
"\n", hw
->h_ageout_cnt
);
190 ds_put_format(ds
, "\tinsert cnt: %"PRIu64
"\n", hw
->h_insert_cnt
);
191 ds_put_format(ds
, "\tdelete cnt: %"PRIu64
"\n", hw
->h_delete_cnt
);
192 ds_put_format(ds
, "\tdrop cnt: %"PRIu64
"\n", hw
->h_drop_cnt
);
197 aa_print_element_status_port(struct ds
*ds
, struct lldpd_hardware
*hw
)
199 struct lldpd_port
*port
;
201 LIST_FOR_EACH (port
, p_entries
, &hw
->h_rports
) {
202 if (memcmp(&port
->p_element
.system_id
,
204 sizeof port
->p_element
.system_id
)) {
205 const char *none_str
= "<None>";
206 const char *descr
= NULL
;
210 if (port
->p_chassis
) {
211 if (port
->p_chassis
->c_id_len
> 0) {
212 chassisid_to_string(port
->p_chassis
->c_id
,
213 port
->p_chassis
->c_id_len
, &id
);
216 descr
= port
->p_chassis
->c_descr
;
219 chassisid_to_string((uint8_t *) &port
->p_element
.system_id
,
220 sizeof port
->p_element
.system_id
, &system
);
222 ds_put_format(ds
, "\tAuto Attach Primary Server Id: %s\n",
224 ds_put_format(ds
, "\tAuto Attach Primary Server Descr: %s\n",
225 descr
? descr
: none_str
);
226 ds_put_format(ds
, "\tAuto Attach Primary Server System Id: %s\n",
235 /* Auto Attach server broadcast an LLDP message periodically. Display
236 * the discovered server.
239 aa_print_element_status(struct ds
*ds
, struct lldp
*lldp
) OVS_REQUIRES(mutex
)
241 struct lldpd_hardware
*hw
;
243 ds_put_format(ds
, "LLDP: %s\n", lldp
->name
);
249 LIST_FOR_EACH (hw
, h_entries
, &lldp
->lldpd
->g_hardware
) {
250 aa_print_element_status_port(ds
, hw
);
255 aa_print_isid_status_port_isid(struct lldp
*lldp
, struct lldpd_port
*port
)
258 struct lldpd_aa_isid_vlan_maps_tlv
*mapping
;
260 if (ovs_list_is_empty(&port
->p_isid_vlan_maps
)) {
264 LIST_FOR_EACH (mapping
, m_entries
, &port
->p_isid_vlan_maps
) {
265 uint32_t isid
= mapping
->isid_vlan_data
.isid
;
266 struct aa_mapping_internal
*m
= mapping_find_by_isid(lldp
, isid
);
268 VLOG_INFO("h_rport: isid=%u, vlan=%u, status=%d",
270 mapping
->isid_vlan_data
.vlan
,
271 mapping
->isid_vlan_data
.status
);
273 /* Update the status of our internal state for the mapping. */
275 VLOG_INFO("Setting status for ISID=%"PRIu32
" to %"PRIu16
,
276 isid
, mapping
->isid_vlan_data
.status
);
277 m
->status
= mapping
->isid_vlan_data
.status
;
279 VLOG_WARN("Couldn't find mapping for I-SID=%"PRIu32
, isid
);
285 aa_print_isid_status_port(struct lldp
*lldp
, struct lldpd_hardware
*hw
)
288 struct lldpd_port
*port
;
290 LIST_FOR_EACH (port
, p_entries
, &hw
->h_rports
) {
291 aa_print_isid_status_port_isid(lldp
, port
);
295 /* The Auto Attach server will broadcast the status of the configured mappings
296 * via LLDP. Display the status.
299 aa_print_isid_status(struct ds
*ds
, struct lldp
*lldp
) OVS_REQUIRES(mutex
)
301 struct lldpd_hardware
*hw
;
302 struct aa_mapping_internal
*m
;
308 ds_put_format(ds
, "LLDP: %s\n", lldp
->name
);
310 LIST_FOR_EACH (hw
, h_entries
, &lldp
->lldpd
->g_hardware
) {
311 aa_print_isid_status_port(lldp
, hw
);
314 ds_put_format(ds
, "%-8s %-4s %-11s %-8s\n",
319 ds_put_format(ds
, "-------- ---- ----------- --------\n");
321 HMAP_FOR_EACH (m
, hmap_node_isid
, &lldp
->mappings_by_isid
) {
322 ds_put_format(ds
, "%-8"PRIu32
" %-4"PRIu16
" %-11s %-11s\n",
323 m
->isid
, m
->vlan
, "Switch", aa_status_to_str(m
->status
));
328 aa_unixctl_status(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
329 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
333 struct ds ds
= DS_EMPTY_INITIALIZER
;
335 ovs_mutex_lock(&mutex
);
337 HMAP_FOR_EACH (lldp
, hmap_node
, all_lldps
) {
338 aa_print_element_status(&ds
, lldp
);
340 unixctl_command_reply(conn
, ds_cstr(&ds
));
343 ovs_mutex_unlock(&mutex
);
347 aa_unixctl_show_isid(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
348 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
352 struct ds ds
= DS_EMPTY_INITIALIZER
;
354 ovs_mutex_lock(&mutex
);
356 HMAP_FOR_EACH (lldp
, hmap_node
, all_lldps
) {
357 aa_print_isid_status(&ds
, lldp
);
359 unixctl_command_reply(conn
, ds_cstr(&ds
));
362 ovs_mutex_unlock(&mutex
);
366 aa_unixctl_statistics(struct unixctl_conn
*conn
, int argc OVS_UNUSED
,
367 const char *argv
[] OVS_UNUSED
, void *aux OVS_UNUSED
)
370 struct ds ds
= DS_EMPTY_INITIALIZER
;
373 ovs_mutex_lock(&mutex
);
375 /* Cycle through all ports and dump the stats for each one */
376 HMAP_FOR_EACH (lldp
, hmap_node
, all_lldps
) {
377 aa_print_lldp_and_aa_stats(&ds
, lldp
);
380 ovs_mutex_unlock(&mutex
);
382 unixctl_command_reply(conn
, ds_cstr(&ds
));
385 /* An Auto Attach mapping was configured. Populate the corresponding
386 * structures in the LLDP hardware.
389 update_mapping_on_lldp(struct lldp
*lldp
, struct lldpd_hardware
*hardware
,
390 struct aa_mapping_internal
*m
)
392 struct lldpd_aa_isid_vlan_maps_tlv
*lm
= xzalloc(sizeof *lm
);
394 VLOG_INFO("\t\t hardware->h_ifname=%s", hardware
->h_ifname
);
396 lm
->isid_vlan_data
.isid
= m
->isid
;
397 lm
->isid_vlan_data
.vlan
= m
->vlan
;
399 ovs_list_push_back(&hardware
->h_lport
.p_isid_vlan_maps
, &lm
->m_entries
);
401 /* TODO Should be done in the Auto Attach state machine when a mapping goes
402 * from "pending" to "active".
404 struct bridge_aa_vlan
*node
= xmalloc(sizeof *node
);
406 node
->port_name
= xstrdup(hardware
->h_ifname
);
407 node
->vlan
= m
->vlan
;
408 node
->oper
= BRIDGE_AA_VLAN_OPER_ADD
;
410 ovs_list_push_back(&lldp
->active_mapping_queue
, &node
->list_node
);
413 /* Bridge will poll the list of VLAN that needs to be auto configure based on
414 * the Auto Attach mappings that have been exchanged with the server.
417 aa_get_vlan_queued(struct ovs_list
*list
)
421 ovs_mutex_lock(&mutex
);
423 HMAP_FOR_EACH (lldp
, hmap_node
, all_lldps
) {
424 struct bridge_aa_vlan
*node
;
426 LIST_FOR_EACH_POP (node
, list_node
, &lldp
->active_mapping_queue
) {
427 struct bridge_aa_vlan
*copy
;
429 copy
= xmalloc(sizeof *copy
);
430 copy
->port_name
= xstrdup(node
->port_name
);
431 copy
->vlan
= node
->vlan
;
432 copy
->oper
= node
->oper
;
434 ovs_list_push_back(list
, ©
->list_node
);
437 free(node
->port_name
);
442 ovs_mutex_unlock(&mutex
);
447 /* Bridge will poll whether or not VLAN have been auto-configured.
450 aa_get_vlan_queue_size(void)
453 unsigned int size
= 0;
455 ovs_mutex_lock(&mutex
);
457 HMAP_FOR_EACH (lldp
, hmap_node
, all_lldps
) {
458 size
+= ovs_list_size(&lldp
->active_mapping_queue
);
461 ovs_mutex_unlock(&mutex
);
466 /* Configure Auto Attach.
469 aa_configure(const struct aa_settings
*s
)
473 ovs_mutex_lock(&mutex
);
475 /* TODO Change all instances for now */
476 HMAP_FOR_EACH (lldp
, hmap_node
, all_lldps
) {
477 struct lldpd_chassis
*chassis
;
479 LIST_FOR_EACH (chassis
, list
, &lldp
->lldpd
->g_chassis
) {
480 /* System Description */
481 free(chassis
->c_descr
);
482 chassis
->c_descr
= s
&& s
->system_description
[0] ?
483 xstrdup(s
->system_description
) : xstrdup(PACKAGE_STRING
);
487 free(chassis
->c_name
);
488 chassis
->c_name
= xstrdup(s
->system_name
);
493 ovs_mutex_unlock(&mutex
);
498 /* Add a new Auto Attach mapping.
501 aa_mapping_register(void *aux
, const struct aa_mapping_settings
*s
)
503 struct aa_mapping_internal
*bridge_m
;
506 VLOG_INFO("Adding mapping ISID=%"PRIu32
", VLAN=%"PRIu16
", aux=%p",
507 s
->isid
, s
->vlan
, aux
);
509 ovs_mutex_lock(&mutex
);
511 /* TODO These mappings should be stores per bridge. This is used
512 * When a port is added. Auto Attach mappings need to be added on this
515 bridge_m
= xzalloc(sizeof *bridge_m
);
516 bridge_m
->isid
= s
->isid
;
517 bridge_m
->vlan
= s
->vlan
;
519 bridge_m
->status
= AA_STATUS_PENDING
;
520 hmap_insert(all_mappings
, &bridge_m
->hmap_node_isid
,
521 hash_int(bridge_m
->isid
, 0));
524 /* Update mapping on the all the LLDP instances. */
525 HMAP_FOR_EACH (lldp
, hmap_node
, all_lldps
) {
526 struct lldpd_hardware
*hw
;
527 struct aa_mapping_internal
*m
;
529 VLOG_INFO("\t lldp->name=%s", lldp
->name
);
531 if (mapping_find_by_isid(lldp
, s
->isid
)) {
535 m
= xzalloc(sizeof *m
);
538 m
->status
= AA_STATUS_PENDING
;
540 hmap_insert(&lldp
->mappings_by_isid
, &m
->hmap_node_isid
,
541 hash_int(m
->isid
, 0));
542 hmap_insert(&lldp
->mappings_by_aux
,
544 hash_pointer(m
->aux
, 0));
546 /* Configure the mapping on each port of the LLDP stack. */
547 LIST_FOR_EACH (hw
, h_entries
, &lldp
->lldpd
->g_hardware
) {
548 update_mapping_on_lldp(lldp
, hw
, m
);
552 ovs_mutex_unlock(&mutex
);
558 aa_mapping_unregister_mapping(struct lldp
*lldp
,
559 struct lldpd_hardware
*hw
,
560 struct aa_mapping_internal
*m
)
562 struct lldpd_aa_isid_vlan_maps_tlv
*lm
, *lm_next
;
564 LIST_FOR_EACH_SAFE (lm
, lm_next
, m_entries
,
565 &hw
->h_lport
.p_isid_vlan_maps
) {
566 uint32_t isid
= lm
->isid_vlan_data
.isid
;
568 if (isid
== m
->isid
) {
569 VLOG_INFO("\t\t Removing lport, isid=%u, vlan=%u",
571 lm
->isid_vlan_data
.vlan
);
573 ovs_list_remove(&lm
->m_entries
);
575 /* TODO Should be done in the AA SM when a mapping goes
576 * from "pending" to "active".
578 struct bridge_aa_vlan
*node
= xmalloc(sizeof *node
);
580 node
->port_name
= xstrdup(hw
->h_ifname
);
581 node
->vlan
= m
->vlan
;
582 node
->oper
= BRIDGE_AA_VLAN_OPER_REMOVE
;
584 ovs_list_push_back(&lldp
->active_mapping_queue
, &node
->list_node
);
591 /* Remove an existing Auto Attach mapping.
594 aa_mapping_unregister(void *aux
)
598 VLOG_INFO("Removing mapping aux=%p", aux
);
600 ovs_mutex_lock(&mutex
);
602 HMAP_FOR_EACH (lldp
, hmap_node
, all_lldps
) {
603 struct lldpd_hardware
*hw
;
604 struct aa_mapping_internal
*m
= mapping_find_by_aux(lldp
, aux
);
606 /* Remove from internal hash tables. */
608 uint32_t isid
= m
->isid
;
609 uint16_t vlan
= m
->vlan
;
610 struct aa_mapping_internal
*p
= mapping_find_by_isid(lldp
, isid
);
612 VLOG_INFO("\t Removing mapping ISID=%"PRIu32
", VLAN=%"PRIu16
613 " (lldp->name=%s)", isid
, vlan
, lldp
->name
);
616 hmap_remove(&lldp
->mappings_by_isid
, &p
->hmap_node_isid
);
619 hmap_remove(&lldp
->mappings_by_aux
, &m
->hmap_node_aux
);
621 /* Remove from all the lldp instances */
622 LIST_FOR_EACH (hw
, h_entries
, &lldp
->lldpd
->g_hardware
) {
623 VLOG_INFO("\t\t hardware->h_ifname=%s", hw
->h_ifname
);
624 aa_mapping_unregister_mapping(lldp
, hw
, m
);
628 /* Remove from the all_mappings */
629 HMAP_FOR_EACH (m
, hmap_node_isid
, all_mappings
) {
630 if (m
&& isid
== m
->isid
&& vlan
== m
->vlan
) {
631 hmap_remove(all_mappings
, &m
->hmap_node_isid
);
638 ovs_mutex_unlock(&mutex
);
646 unixctl_command_register("autoattach/status", "[bridge]", 0, 1,
647 aa_unixctl_status
, NULL
);
648 unixctl_command_register("autoattach/show-isid", "[bridge]", 0, 1,
649 aa_unixctl_show_isid
, NULL
);
650 unixctl_command_register("autoattach/statistics", "[bridge]", 0, 1,
651 aa_unixctl_statistics
, NULL
);
654 /* Returns true if 'lldp' should process packets from 'flow'. Sets
655 * fields in 'wc' that were used to make the determination.
658 lldp_should_process_flow(struct lldp
*lldp
, const struct flow
*flow
)
660 return (flow
->dl_type
== htons(ETH_TYPE_LLDP
) && lldp
->enabled
);
664 /* Process an LLDP packet that was received on a bridge port.
667 lldp_process_packet(struct lldp
*lldp
, const struct dp_packet
*p
)
670 lldpd_recv(lldp
->lldpd
, lldpd_first_hardware(lldp
->lldpd
),
671 (char *) dp_packet_data(p
), dp_packet_size(p
));
675 /* This code is called periodically to check if the LLDP module has an LLDP
676 * message it wishes to send. It is called several times every second.
679 lldp_should_send_packet(struct lldp
*cfg
) OVS_EXCLUDED(mutex
)
683 ovs_mutex_lock(&mutex
);
684 ret
= timer_expired(&cfg
->tx_timer
);
685 ovs_mutex_unlock(&mutex
);
687 /* LLDP must be enabled */
693 /* Returns the next wake up time.
696 lldp_wake_time(const struct lldp
*lldp
) OVS_EXCLUDED(mutex
)
698 long long int retval
;
700 if (!lldp
|| !lldp
->enabled
) {
704 ovs_mutex_lock(&mutex
);
705 retval
= lldp
->tx_timer
.t
;
706 ovs_mutex_unlock(&mutex
);
711 /* Put the monitor thread to sleep until it's next wake time.
714 lldp_wait(struct lldp
*lldp
) OVS_EXCLUDED(mutex
)
716 long long int wake_time
= lldp_wake_time(lldp
);
717 poll_timer_wait_until(wake_time
);
721 /* Prepare the LLDP packet to be sent on a bridge port.
724 lldp_put_packet(struct lldp
*lldp
, struct dp_packet
*packet
,
725 const struct eth_addr eth_src
) OVS_EXCLUDED(mutex
)
727 struct lldpd
*mylldpd
= lldp
->lldpd
;
728 struct lldpd_hardware
*hw
= lldpd_first_hardware(mylldpd
);
729 static const struct eth_addr eth_addr_lldp
=
730 { { { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x0e } } };
732 ovs_mutex_lock(&mutex
);
734 eth_compose(packet
, eth_addr_lldp
, eth_src
, ETH_TYPE_LLDP
, 0);
736 lldpd_send(hw
, packet
);
738 timer_set_duration(&lldp
->tx_timer
, lldp
->lldpd
->g_config
.c_tx_interval
);
739 ovs_mutex_unlock(&mutex
);
742 /* Configures the LLDP stack.
745 lldp_configure(struct lldp
*lldp
, const struct smap
*cfg
) OVS_EXCLUDED(mutex
)
748 if (cfg
&& smap_get_bool(cfg
, "enable", false)) {
749 lldp
->enabled
= true;
751 lldp
->enabled
= false;
754 ovs_mutex_lock(&mutex
);
755 timer_set_expired(&lldp
->tx_timer
);
756 timer_set_duration(&lldp
->tx_timer
, LLDP_DEFAULT_TRANSMIT_INTERVAL_MS
);
757 lldp
->lldpd
->g_config
.c_tx_interval
=
758 LLDP_DEFAULT_TRANSMIT_INTERVAL_MS
;
759 ovs_mutex_unlock(&mutex
);
765 /* Create an LLDP stack instance. At the moment there is one per bridge port.
768 lldp_create(const struct netdev
*netdev
,
770 const struct smap
*cfg
) OVS_EXCLUDED(mutex
)
773 struct lldpd_chassis
*lchassis
;
774 struct lldpd_hardware
*hw
;
775 struct aa_mapping_internal
*m
;
777 if (!cfg
|| !smap_get_bool(cfg
, "enable", false)) {
781 lldp
= xzalloc(sizeof *lldp
);
782 lldp
->name
= xstrdup(netdev_get_name(netdev
));
783 lldp
->lldpd
= xzalloc(sizeof *lldp
->lldpd
);
785 hmap_init(&lldp
->mappings_by_isid
);
786 hmap_init(&lldp
->mappings_by_aux
);
787 ovs_list_init(&lldp
->active_mapping_queue
);
789 lchassis
= xzalloc(sizeof *lchassis
);
790 lchassis
->c_cap_available
= LLDP_CAP_BRIDGE
;
791 lchassis
->c_cap_enabled
= LLDP_CAP_BRIDGE
;
792 lchassis
->c_id_subtype
= LLDP_CHASSISID_SUBTYPE_LLADDR
;
793 lchassis
->c_id_len
= ETH_ADDR_LEN
;
795 struct eth_addr
*mac
= xmalloc(ETH_ADDR_LEN
);
796 netdev_get_etheraddr(netdev
, mac
);
797 lchassis
->c_id
= &mac
->ea
[0];
799 ovs_list_init(&lchassis
->c_mgmt
);
800 lchassis
->c_ttl
= lldp
->lldpd
->g_config
.c_tx_interval
*
801 lldp
->lldpd
->g_config
.c_tx_hold
;
802 lchassis
->c_ttl
= LLDP_CHASSIS_TTL
;
803 lldpd_assign_cfg_to_protocols(lldp
->lldpd
);
804 ovs_list_init(&lldp
->lldpd
->g_chassis
);
805 ovs_list_push_back(&lldp
->lldpd
->g_chassis
, &lchassis
->list
);
807 if ((hw
= lldpd_alloc_hardware(lldp
->lldpd
,
808 (char *) netdev_get_name(netdev
),
810 VLOG_WARN("Unable to allocate space for %s",
811 (char *) netdev_get_name(netdev
));
815 ovs_refcount_init(&lldp
->ref_cnt
);
817 hw
->h_flags
|= IFF_RUNNING
;
820 hw
->h_lport
.p_id_subtype
= LLDP_PORTID_SUBTYPE_IFNAME
;
821 hw
->h_lport
.p_id
= xstrdup(netdev_get_name(netdev
));
823 /* p_id is not necessarily a null terminated string. */
824 hw
->h_lport
.p_id_len
= strlen(netdev_get_name(netdev
));
826 /* Auto Attach element tlv */
827 hw
->h_lport
.p_element
.type
= LLDP_TLV_AA_ELEM_TYPE_CLIENT_VIRTUAL_SWITCH
;
828 hw
->h_lport
.p_element
.mgmt_vlan
= 0;
829 memcpy(&hw
->h_lport
.p_element
.system_id
.system_mac
,
830 lchassis
->c_id
, lchassis
->c_id_len
);
831 hw
->h_lport
.p_element
.system_id
.conn_type
=
832 LLDP_TLV_AA_ELEM_CONN_TYPE_SINGLE
;
833 hw
->h_lport
.p_element
.system_id
.rsvd
= 0;
834 hw
->h_lport
.p_element
.system_id
.rsvd2
[0] = 0;
835 hw
->h_lport
.p_element
.system_id
.rsvd2
[1] = 0;
837 ovs_list_init(&hw
->h_lport
.p_isid_vlan_maps
);
838 ovs_list_init(&lldp
->lldpd
->g_hardware
);
839 ovs_list_push_back(&lldp
->lldpd
->g_hardware
, &hw
->h_entries
);
841 ovs_mutex_lock(&mutex
);
843 /* Update port with Auto Attach mappings configured. */
844 HMAP_FOR_EACH (m
, hmap_node_isid
, all_mappings
) {
845 struct aa_mapping_internal
*p
;
847 if (mapping_find_by_isid(lldp
, m
->isid
)) {
851 p
= xmemdup(m
, sizeof *p
);
852 hmap_insert(&lldp
->mappings_by_isid
, &p
->hmap_node_isid
,
853 hash_int(p
->isid
, 0));
854 hmap_insert(&lldp
->mappings_by_aux
,
856 hash_pointer(p
->aux
, 0));
858 update_mapping_on_lldp(lldp
, hw
, p
);
861 hmap_insert(all_lldps
, &lldp
->hmap_node
,
862 hash_string(netdev_get_name(netdev
), 0));
864 ovs_mutex_unlock(&mutex
);
871 lldp_create_dummy(void)
874 struct lldpd_chassis
*lchassis
;
875 struct lldpd_hardware
*hw
;
877 lldp
= xzalloc(sizeof *lldp
);
878 lldp
->name
= "dummy-lldp";
879 lldp
->lldpd
= xzalloc(sizeof *lldp
->lldpd
);
881 hmap_init(&lldp
->mappings_by_isid
);
882 hmap_init(&lldp
->mappings_by_aux
);
883 ovs_list_init(&lldp
->active_mapping_queue
);
885 lchassis
= xzalloc(sizeof *lchassis
);
886 lchassis
->c_cap_available
= LLDP_CAP_BRIDGE
;
887 lchassis
->c_cap_enabled
= LLDP_CAP_BRIDGE
;
888 lchassis
->c_id_subtype
= LLDP_CHASSISID_SUBTYPE_LLADDR
;
889 lchassis
->c_id_len
= ETH_ADDR_LEN
;
891 ovs_list_init(&lchassis
->c_mgmt
);
892 lchassis
->c_ttl
= LLDP_CHASSIS_TTL
;
893 lldpd_assign_cfg_to_protocols(lldp
->lldpd
);
894 ovs_list_init(&lldp
->lldpd
->g_chassis
);
895 ovs_list_push_back(&lldp
->lldpd
->g_chassis
, &lchassis
->list
);
897 hw
= lldpd_alloc_hardware(lldp
->lldpd
, "dummy-hw", 0);
899 ovs_refcount_init(&lldp
->ref_cnt
);
901 hw
->h_flags
|= IFF_RUNNING
;
904 hw
->h_lport
.p_id_subtype
= LLDP_PORTID_SUBTYPE_IFNAME
;
905 hw
->h_lport
.p_id
= "dummy-port";
907 /* p_id is not necessarily a null terminated string. */
908 hw
->h_lport
.p_id_len
= strlen(hw
->h_lport
.p_id
);
910 /* Auto Attach element tlv */
911 hw
->h_lport
.p_element
.type
= LLDP_TLV_AA_ELEM_TYPE_CLIENT_VIRTUAL_SWITCH
;
912 hw
->h_lport
.p_element
.mgmt_vlan
= 0;
913 hw
->h_lport
.p_element
.system_id
.conn_type
=
914 LLDP_TLV_AA_ELEM_CONN_TYPE_SINGLE
;
915 hw
->h_lport
.p_element
.system_id
.rsvd
= 0;
916 hw
->h_lport
.p_element
.system_id
.rsvd2
[0] = 0;
917 hw
->h_lport
.p_element
.system_id
.rsvd2
[1] = 0;
919 ovs_list_init(&hw
->h_lport
.p_isid_vlan_maps
);
920 ovs_list_init(&lldp
->lldpd
->g_hardware
);
921 ovs_list_push_back(&lldp
->lldpd
->g_hardware
, &hw
->h_entries
);
926 /* Unreference a specific LLDP instance.
929 lldp_unref(struct lldp
*lldp
)
935 ovs_mutex_lock(&mutex
);
936 if (ovs_refcount_unref_relaxed(&lldp
->ref_cnt
) != 1) {
937 ovs_mutex_unlock(&mutex
);
941 hmap_remove(all_lldps
, &lldp
->hmap_node
);
942 ovs_mutex_unlock(&mutex
);
944 lldpd_cleanup(lldp
->lldpd
);
950 /* Reference a specific LLDP instance.
953 lldp_ref(const struct lldp
*lldp_
)
955 struct lldp
*lldp
= CONST_CAST(struct lldp
*, lldp_
);
957 ovs_refcount_ref(&lldp
->ref_cnt
);
963 lldp_destroy_dummy(struct lldp
*lldp
)
965 struct lldpd_hardware
*hw
, *hw_next
;
966 struct lldpd_chassis
*chassis
, *chassis_next
;
975 LIST_FOR_EACH_SAFE (hw
, hw_next
, h_entries
, &cfg
->g_hardware
) {
976 ovs_list_remove(&hw
->h_entries
);
977 free(hw
->h_lport
.p_lastframe
);
981 LIST_FOR_EACH_SAFE (chassis
, chassis_next
, list
, &cfg
->g_chassis
) {
982 ovs_list_remove(&chassis
->list
);