]>
Commit | Line | Data |
---|---|---|
acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
5435a2bf | 2 | /* |
63d4bd12 QY |
3 | * VRRP global definitions and state machine. |
4 | * Copyright (C) 2018-2019 Cumulus Networks, Inc. | |
5 | * Quentin Young | |
5435a2bf | 6 | */ |
63d4bd12 QY |
7 | #ifndef __VRRP_H__ |
8 | #define __VRRP_H__ | |
5435a2bf QY |
9 | |
10 | #include <zebra.h> | |
91188ca6 | 11 | #include <netinet/ip.h> |
1d21789e | 12 | |
7c136b08 | 13 | #include "lib/memory.h" |
1d21789e QY |
14 | #include "lib/hash.h" |
15 | #include "lib/hook.h" | |
16 | #include "lib/if.h" | |
17 | #include "lib/linklist.h" | |
f495425b | 18 | #include "lib/northbound.h" |
1d21789e | 19 | #include "lib/privs.h" |
91188ca6 | 20 | #include "lib/stream.h" |
24a58196 | 21 | #include "lib/frrevent.h" |
f828842a | 22 | #include "lib/vty.h" |
5435a2bf QY |
23 | |
24 | /* Global definitions */ | |
f3fe0047 | 25 | #define VRRP_RADV_INT 16 |
5435a2bf | 26 | #define VRRP_PRIO_MASTER 255 |
862f2f37 QY |
27 | #define VRRP_MCASTV4_GROUP_STR "224.0.0.18" |
28 | #define VRRP_MCASTV6_GROUP_STR "ff02:0:0:0:0:0:0:12" | |
29 | #define VRRP_MCASTV4_GROUP 0xe0000012 | |
30 | #define VRRP_MCASTV6_GROUP 0xff020000000000000000000000000012 | |
5435a2bf QY |
31 | #define IPPROTO_VRRP 112 |
32 | ||
613b45b0 QY |
33 | #define VRRP_LOGPFX_VRID "[VRID %u] " |
34 | #define VRRP_LOGPFX_FAM "[%s] " | |
4ec94408 | 35 | |
8cd1d277 | 36 | /* Default defaults */ |
f495425b QY |
37 | #define VRRP_XPATH_FULL "/frr-interface:lib/interface/frr-vrrpd:vrrp/vrrp-group" |
38 | #define VRRP_XPATH "./frr-vrrpd:vrrp/vrrp-group" | |
8cd1d277 QY |
39 | #define VRRP_DEFAULT_PRIORITY 100 |
40 | #define VRRP_DEFAULT_ADVINT 100 | |
41 | #define VRRP_DEFAULT_PREEMPT true | |
42 | #define VRRP_DEFAULT_ACCEPT true | |
9f2379bd | 43 | #define VRRP_DEFAULT_CHECKSUM_WITH_IPV4_PSEUDOHEADER true |
8cd1d277 QY |
44 | #define VRRP_DEFAULT_SHUTDOWN false |
45 | ||
cb44d476 QY |
46 | /* User compatibility constant */ |
47 | #define CS2MS 10 | |
48 | ||
bf8d3d6a | 49 | DECLARE_MGROUP(VRRPD); |
7c136b08 | 50 | |
f495425b QY |
51 | /* Northbound */ |
52 | extern const struct frr_yang_module_info frr_vrrpd_info; | |
53 | ||
8cd1d277 QY |
54 | /* Configured defaults */ |
55 | struct vrrp_defaults { | |
f495425b | 56 | uint8_t version; |
8cd1d277 QY |
57 | uint8_t priority; |
58 | uint16_t advertisement_interval; | |
59 | bool preempt_mode; | |
60 | bool accept_mode; | |
9f2379bd | 61 | bool checksum_with_ipv4_pseudoheader; |
8cd1d277 QY |
62 | bool shutdown; |
63 | }; | |
64 | ||
65 | extern struct vrrp_defaults vd; | |
66 | ||
5435a2bf | 67 | /* threadmaster */ |
cd9d0537 | 68 | extern struct event_loop *master; |
5435a2bf | 69 | |
b6029d6a QY |
70 | /* privileges */ |
71 | extern struct zebra_privs_t vrrp_privs; | |
72 | ||
5435a2bf | 73 | /* Global hash of all Virtual Routers */ |
27fd8827 | 74 | extern struct hash *vrrp_vrouters_hash; |
5435a2bf | 75 | |
27fd8827 QY |
76 | /* |
77 | * VRRP Router. | |
78 | * | |
79 | * This struct contains all state for a particular VRRP Router operating | |
80 | * in a Virtual Router for either IPv4 or IPv6. | |
81 | */ | |
82 | struct vrrp_router { | |
862f2f37 QY |
83 | /* |
84 | * Whether this VRRP Router is active. | |
85 | */ | |
86 | bool is_active; | |
87 | ||
10133a59 QY |
88 | /* Whether we are the address owner */ |
89 | bool is_owner; | |
90 | ||
dad18a2f QY |
91 | /* Rx socket: Rx from parent of mvl_ifp */ |
92 | int sock_rx; | |
93 | /* Tx socket; Tx from mvl_ifp */ | |
94 | int sock_tx; | |
95 | ||
96 | /* macvlan interface */ | |
97 | struct interface *mvl_ifp; | |
5435a2bf | 98 | |
8071d5c3 QY |
99 | /* Source address for advertisements */ |
100 | struct ipaddr src; | |
101 | ||
91188ca6 QY |
102 | /* Socket read buffer */ |
103 | uint8_t ibuf[IP_MAXPACKET]; | |
104 | ||
862f2f37 QY |
105 | /* |
106 | * Address family of this Virtual Router. | |
107 | * Either AF_INET or AF_INET6. | |
108 | */ | |
109 | int family; | |
5435a2bf QY |
110 | |
111 | /* | |
862f2f37 | 112 | * Virtual Router this VRRP Router is participating in. |
5435a2bf | 113 | */ |
862f2f37 | 114 | struct vrrp_vrouter *vr; |
5435a2bf | 115 | |
862f2f37 QY |
116 | /* |
117 | * One or more IPvX addresses associated with this Virtual | |
118 | * Router. The first address must be the "primary" address this | |
119 | * Virtual Router is backing up in the case of IPv4. In the case of | |
120 | * IPv6 it must be the link-local address of vr->ifp. | |
121 | * | |
122 | * Type: struct ipaddr * | |
123 | */ | |
124 | struct list *addrs; | |
5435a2bf | 125 | |
d60b2ffd QY |
126 | /* |
127 | * This flag says whether we are waiting on an interface up | |
128 | * notification from Zebra before we send an ADVERTISEMENT. | |
129 | */ | |
130 | bool advert_pending; | |
131 | ||
132 | /* | |
133 | * If this is an IPv4 VRRP router, this flag says whether we are | |
134 | * waiting on an interface up notification from Zebra before we send | |
135 | * gratuitous ARP packets for all our addresses. Should never be true | |
136 | * if family == AF_INET6. | |
137 | */ | |
138 | bool garp_pending; | |
139 | /* | |
140 | * If this is an IPv6 VRRP router, this flag says whether we are | |
141 | * waiting on an interface up notification from Zebra before we send | |
142 | * Unsolicited Neighbor Advertisement packets for all our addresses. | |
143 | * Should never be true if family == AF_INET. | |
144 | */ | |
145 | bool ndisc_pending; | |
146 | ||
5d3730c5 QY |
147 | /* |
148 | * Effective priority | |
862f2f37 | 149 | * => vr->priority if we are Backup |
5d3730c5 QY |
150 | * => 255 if we are Master |
151 | */ | |
5435a2bf QY |
152 | uint8_t priority; |
153 | ||
5435a2bf QY |
154 | /* |
155 | * Advertisement interval contained in ADVERTISEMENTS received from the | |
156 | * Master (centiseconds) | |
157 | */ | |
158 | uint16_t master_adver_interval; | |
159 | ||
160 | /* | |
161 | * Time to skew Master_Down_Interval in centiseconds. Calculated as: | |
162 | * (((256 - priority) * Master_Adver_Interval) / 256) | |
163 | */ | |
164 | uint16_t skew_time; | |
165 | ||
166 | /* | |
167 | * Time interval for Backup to declare Master down (centiseconds). | |
168 | * Calculated as: | |
169 | * (3 * Master_Adver_Interval) + Skew_time | |
170 | */ | |
171 | uint16_t master_down_interval; | |
172 | ||
862f2f37 QY |
173 | /* |
174 | * The MAC address used for the source MAC address in VRRP | |
175 | * advertisements, advertised in ARP requests/responses, and advertised | |
176 | * in ND Neighbor Advertisements. | |
177 | */ | |
178 | struct ethaddr vmac; | |
179 | ||
180 | struct { | |
181 | int state; | |
182 | } fsm; | |
183 | ||
6332c77f QY |
184 | struct { |
185 | /* Total number of advertisements sent and received */ | |
186 | uint32_t adver_tx_cnt; | |
187 | uint32_t adver_rx_cnt; | |
188 | /* Total number of gratuitous ARPs sent */ | |
189 | uint32_t garp_tx_cnt; | |
190 | /* Total number of unsolicited Neighbor Advertisements sent */ | |
191 | uint32_t una_tx_cnt; | |
192 | /* Total number of state transitions */ | |
193 | uint32_t trans_cnt; | |
194 | } stats; | |
195 | ||
e6685141 DS |
196 | struct event *t_master_down_timer; |
197 | struct event *t_adver_timer; | |
198 | struct event *t_read; | |
199 | struct event *t_write; | |
862f2f37 QY |
200 | }; |
201 | ||
202 | /* | |
203 | * VRRP Virtual Router. | |
204 | * | |
205 | * This struct contains all state and configuration for a given Virtual Router | |
206 | * Identifier on a given interface, both v4 and v6. | |
207 | * | |
208 | * RFC5798 s. 1 states: | |
209 | * "Within a VRRP router, the virtual routers in each of the IPv4 and IPv6 | |
210 | * address families are a domain unto themselves and do not overlap." | |
211 | * | |
212 | * This implementation has chosen the tuple (interface, VRID) as the key for a | |
213 | * particular VRRP Router, and the rest of the program is designed around this | |
214 | * assumption. Additionally, base protocol configuration parameters such as the | |
215 | * advertisement interval and (configured) priority are shared between v4 and | |
216 | * v6 instances. This corresponds to the choice made by other industrial | |
217 | * implementations. | |
218 | */ | |
219 | struct vrrp_vrouter { | |
53e60e5c QY |
220 | /* Whether this instance was automatically configured */ |
221 | bool autoconf; | |
222 | ||
6e93585e QY |
223 | /* Whether this VRRP router is in administrative shutdown */ |
224 | bool shutdown; | |
225 | ||
862f2f37 QY |
226 | /* Interface */ |
227 | struct interface *ifp; | |
228 | ||
91188ca6 QY |
229 | /* Version */ |
230 | uint8_t version; | |
231 | ||
862f2f37 QY |
232 | /* Virtual Router Identifier */ |
233 | uint32_t vrid; | |
234 | ||
235 | /* Configured priority */ | |
236 | uint8_t priority; | |
237 | ||
238 | /* | |
239 | * Time interval between ADVERTISEMENTS (centiseconds). Default is 100 | |
240 | * centiseconds (1 second). | |
241 | */ | |
242 | uint16_t advertisement_interval; | |
243 | ||
5435a2bf QY |
244 | /* |
245 | * Controls whether a (starting or restarting) higher-priority Backup | |
246 | * router preempts a lower-priority Master router. Values are True to | |
247 | * allow preemption and False to prohibit preemption. Default is True. | |
248 | */ | |
249 | bool preempt_mode; | |
250 | ||
251 | /* | |
252 | * Controls whether a virtual router in Master state will accept | |
253 | * packets addressed to the address owner's IPvX address as its own if | |
254 | * it is not the IPvX address owner. The default is False. | |
255 | */ | |
256 | bool accept_mode; | |
257 | ||
9f2379bd SY |
258 | /* |
259 | * Indicates whether this router computes and accepts VRRPv3 checksums | |
260 | * without pseudoheader, for device interoperability. | |
261 | * | |
262 | * This option should only affect IPv4 virtual routers. | |
263 | */ | |
264 | bool checksum_with_ipv4_pseudoheader; | |
265 | ||
862f2f37 QY |
266 | struct vrrp_router *v4; |
267 | struct vrrp_router *v6; | |
5435a2bf QY |
268 | }; |
269 | ||
5435a2bf QY |
270 | /* |
271 | * Initialize VRRP global datastructures. | |
272 | */ | |
273 | void vrrp_init(void); | |
274 | ||
f1175ba9 QY |
275 | /* |
276 | * Destroy all VRRP instances and gracefully shutdown. | |
277 | * | |
278 | * For instances in Master state, VRRP advertisements with 0 priority will be | |
279 | * sent if possible to notify Backup routers that we are going away. | |
280 | */ | |
281 | void vrrp_fini(void); | |
282 | ||
1d21789e QY |
283 | |
284 | /* Creation and destruction ------------------------------------------------ */ | |
285 | ||
5435a2bf QY |
286 | /* |
287 | * Create and register a new VRRP Virtual Router. | |
1d21789e QY |
288 | * |
289 | * ifp | |
290 | * Base interface to configure VRRP on | |
291 | * | |
292 | * vrid | |
293 | * Virtual Router Identifier | |
5435a2bf | 294 | */ |
99966840 QY |
295 | struct vrrp_vrouter *vrrp_vrouter_create(struct interface *ifp, uint8_t vrid, |
296 | uint8_t version); | |
5435a2bf | 297 | |
c23edd74 | 298 | /* |
6287cefe QY |
299 | * Destroy a VRRP Virtual Router, freeing all its resources. |
300 | * | |
301 | * If there are any running VRRP instances, these are stopped and destroyed. | |
c23edd74 QY |
302 | */ |
303 | void vrrp_vrouter_destroy(struct vrrp_vrouter *vr); | |
304 | ||
1d21789e QY |
305 | |
306 | /* Configuration controllers ----------------------------------------------- */ | |
307 | ||
6e93585e QY |
308 | /* |
309 | * Check if a Virtual Router ought to be started, and if so, start it. | |
310 | * | |
311 | * vr | |
312 | * Virtual Router to checkstart | |
313 | */ | |
314 | void vrrp_check_start(struct vrrp_vrouter *vr); | |
315 | ||
c23edd74 | 316 | /* |
5d3730c5 | 317 | * Change the configured priority of a VRRP Virtual Router. |
c23edd74 | 318 | * |
5d3730c5 QY |
319 | * Note that this only changes the configured priority of the Virtual Router. |
320 | * The currently effective priority will not be changed; to change the | |
321 | * effective priority, the Virtual Router must be restarted by issuing a | |
322 | * VRRP_EVENT_SHUTDOWN followed by a VRRP_EVENT_STARTUP. | |
c23edd74 | 323 | * |
1d21789e QY |
324 | * vr |
325 | * Virtual Router to change priority of | |
c23edd74 | 326 | * |
1d21789e QY |
327 | * priority |
328 | * New priority | |
c23edd74 | 329 | */ |
1d21789e | 330 | void vrrp_set_priority(struct vrrp_vrouter *vr, uint8_t priority); |
c23edd74 QY |
331 | |
332 | /* | |
1d21789e | 333 | * Set Advertisement Interval on this Virtual Router. |
c23edd74 QY |
334 | * |
335 | * vr | |
336 | * Virtual Router to change priority of | |
337 | * | |
1d21789e QY |
338 | * advertisement_interval |
339 | * New advertisement interval | |
c23edd74 | 340 | */ |
1d21789e QY |
341 | void vrrp_set_advertisement_interval(struct vrrp_vrouter *vr, |
342 | uint16_t advertisement_interval); | |
c23edd74 QY |
343 | |
344 | /* | |
862f2f37 QY |
345 | * Add an IPvX address to a VRRP Virtual Router. |
346 | * | |
671fd2a3 | 347 | * vr |
862f2f37 QY |
348 | * Virtual Router to add IPvx address to |
349 | * | |
350 | * ip | |
351 | * Address to add | |
2cd90902 QY |
352 | * |
353 | * activate | |
354 | * Whether to automatically start the VRRP router if this is the first IP | |
355 | * address added. | |
356 | * | |
357 | * Returns: | |
358 | * -1 on error | |
359 | * 0 otherwise | |
862f2f37 | 360 | */ |
671fd2a3 | 361 | int vrrp_add_ip(struct vrrp_vrouter *vr, struct ipaddr *ip); |
862f2f37 QY |
362 | |
363 | /* | |
364 | * Add an IPv4 address to a VRRP Virtual Router. | |
c23edd74 QY |
365 | * |
366 | * vr | |
367 | * Virtual Router to add IPv4 address to | |
368 | * | |
369 | * v4 | |
370 | * Address to add | |
2cd90902 QY |
371 | * |
372 | * activate | |
373 | * Whether to automatically start the VRRP router if this is the first IP | |
374 | * address added. | |
375 | * | |
376 | * Returns: | |
377 | * -1 on error | |
378 | * 0 otherwise | |
c23edd74 | 379 | */ |
6e93585e | 380 | int vrrp_add_ipv4(struct vrrp_vrouter *vr, struct in_addr v4); |
862f2f37 QY |
381 | |
382 | /* | |
383 | * Add an IPv6 address to a VRRP Virtual Router. | |
384 | * | |
385 | * vr | |
386 | * Virtual Router to add IPv6 address to | |
387 | * | |
388 | * v6 | |
389 | * Address to add | |
2cd90902 QY |
390 | * |
391 | * activate | |
392 | * Whether to automatically start the VRRP router if this is the first IP | |
393 | * address added. | |
394 | * | |
395 | * Returns: | |
396 | * -1 on error | |
397 | * 0 otherwise | |
398 | */ | |
6e93585e | 399 | int vrrp_add_ipv6(struct vrrp_vrouter *vr, struct in6_addr v6); |
2cd90902 QY |
400 | |
401 | /* | |
402 | * Remove an IP address from a VRRP Virtual Router. | |
403 | * | |
671fd2a3 | 404 | * vr |
2cd90902 QY |
405 | * Virtual Router to remove IP address from |
406 | * | |
407 | * ip | |
408 | * Address to remove | |
409 | * | |
410 | * deactivate | |
411 | * Whether to automatically stop the VRRP router if removing v4 would leave | |
412 | * us with an empty address list. If this is not true and ip is the only IP | |
413 | * address backed up by this virtual router, this function will not remove | |
414 | * the address and return failure. | |
415 | * | |
416 | * Returns: | |
417 | * -1 on error | |
418 | * 0 otherwise | |
419 | */ | |
671fd2a3 | 420 | int vrrp_del_ip(struct vrrp_vrouter *vr, struct ipaddr *ip); |
2cd90902 QY |
421 | |
422 | /* | |
423 | * Remove an IPv4 address from a VRRP Virtual Router. | |
424 | * | |
425 | * vr | |
426 | * Virtual Router to remove IPv4 address from | |
427 | * | |
428 | * v4 | |
429 | * Address to remove | |
430 | * | |
431 | * deactivate | |
432 | * Whether to automatically stop the VRRP router if removing v4 would leave | |
433 | * us with an empty address list. If this is not true and v4 is the only | |
434 | * IPv4 address backed up by this virtual router, this function will not | |
435 | * remove the address and return failure. | |
436 | * | |
437 | * Returns: | |
438 | * -1 on error | |
439 | * 0 otherwise | |
862f2f37 | 440 | */ |
6e93585e | 441 | int vrrp_del_ipv4(struct vrrp_vrouter *vr, struct in_addr v4); |
c23edd74 | 442 | |
2cd90902 QY |
443 | /* |
444 | * Remove an IPv6 address from a VRRP Virtual Router. | |
445 | * | |
446 | * vr | |
447 | * Virtual Router to remove IPv6 address from | |
448 | * | |
449 | * v6 | |
450 | * Address to remove | |
451 | * | |
452 | * deactivate | |
453 | * Whether to automatically stop the VRRP router if removing v5 would leave | |
454 | * us with an empty address list. If this is not true and v4 is the only | |
455 | * IPv6 address backed up by this virtual router, this function will not | |
456 | * remove the address and return failure. | |
457 | * | |
458 | * Returns: | |
459 | * -1 on error | |
460 | * 0 otherwise | |
461 | */ | |
6e93585e | 462 | int vrrp_del_ipv6(struct vrrp_vrouter *vr, struct in6_addr v6); |
1d21789e QY |
463 | |
464 | /* State machine ----------------------------------------------------------- */ | |
465 | ||
4ec94408 QY |
466 | #define VRRP_STATE_INITIALIZE 0 |
467 | #define VRRP_STATE_MASTER 1 | |
468 | #define VRRP_STATE_BACKUP 2 | |
469 | #define VRRP_EVENT_STARTUP 0 | |
470 | #define VRRP_EVENT_SHUTDOWN 1 | |
471 | ||
2b64873d | 472 | extern const char *const vrrp_state_names[3]; |
1d21789e | 473 | |
5435a2bf | 474 | /* |
1d21789e QY |
475 | * This hook called whenever the state of a Virtual Router changes, after the |
476 | * specific internal state handlers have run. | |
477 | * | |
478 | * Use this if you need to react to state changes to perform non-critical | |
479 | * tasks. Critical tasks should go in the internal state change handlers. | |
5435a2bf | 480 | */ |
2fff50ec | 481 | DECLARE_HOOK(vrrp_change_state_hook, (struct vrrp_router *r, int to), (r, to)); |
5435a2bf QY |
482 | |
483 | /* | |
1d21789e QY |
484 | * Trigger a VRRP event on a given Virtual Router.. |
485 | * | |
486 | * vr | |
487 | * Virtual Router to operate on | |
488 | * | |
489 | * event | |
490 | * Event to kick off. All event related processing will have completed upon | |
491 | * return of this function. | |
492 | * | |
493 | * Returns: | |
494 | * < 0 if the event created an error | |
495 | * 0 otherwise | |
5435a2bf | 496 | */ |
862f2f37 | 497 | int vrrp_event(struct vrrp_router *r, int event); |
5435a2bf | 498 | |
27fd8827 | 499 | /* Autoconfig -------------------------------------------------------------- */ |
1d21789e | 500 | |
53e60e5c QY |
501 | /* |
502 | * Search for and automatically configure VRRP instances on interfaces. | |
503 | * | |
504 | * ifp | |
505 | * Interface to autoconfig. If it is a macvlan interface and has a VRRP MAC, | |
506 | * a VRRP instance corresponding to VMAC assigned to macvlan will be created | |
507 | * on the parent interface and all addresses on the macvlan interface except | |
508 | * the v6 link local will be configured as VRRP addresses. If NULL, this | |
509 | * treatment will be applied to all existing interfaces matching the above | |
510 | * criterion. | |
511 | * | |
512 | * Returns: | |
513 | * -1 on failure | |
514 | * 0 otherwise | |
515 | */ | |
27fd8827 QY |
516 | int vrrp_autoconfig(void); |
517 | ||
518 | /* | |
519 | * Enable autoconfiguration. | |
520 | * | |
521 | * Calling this function will cause vrrpd to automatically configure VRRP | |
522 | * instances on existing compatible macvlan interfaces. These instances will | |
523 | * react to interface up/down and address add/delete events to keep themselves | |
524 | * in sync with the available interfaces. | |
525 | * | |
526 | * version | |
527 | * VRRP version to use for autoconfigured instances. Must be 2 or 3. | |
528 | */ | |
529 | void vrrp_autoconfig_on(int version); | |
530 | ||
531 | /* | |
532 | * Disable autoconfiguration. | |
533 | * | |
534 | * Calling this function will delete all existing autoconfigured VRRP instances. | |
535 | */ | |
536 | void vrrp_autoconfig_off(void); | |
537 | ||
6e93585e | 538 | /* Interface Tracking ------------------------------------------------------ */ |
27fd8827 | 539 | |
6e93585e QY |
540 | void vrrp_if_add(struct interface *ifp); |
541 | void vrrp_if_del(struct interface *ifp); | |
542 | void vrrp_if_up(struct interface *ifp); | |
543 | void vrrp_if_down(struct interface *ifp); | |
544 | void vrrp_if_address_add(struct interface *ifp); | |
545 | void vrrp_if_address_del(struct interface *ifp); | |
27fd8827 QY |
546 | |
547 | /* Other ------------------------------------------------------------------- */ | |
53e60e5c | 548 | |
f828842a QY |
549 | /* |
550 | * Write global level configuration to vty. | |
551 | * | |
552 | * vty | |
553 | * vty to write config to | |
554 | * | |
555 | * Returns: | |
556 | * # of lines written | |
557 | */ | |
558 | int vrrp_config_write_global(struct vty *vty); | |
559 | ||
1d21789e QY |
560 | /* |
561 | * Find VRRP Virtual Router by Virtual Router ID | |
562 | */ | |
fb8b348c | 563 | struct vrrp_vrouter *vrrp_lookup(const struct interface *ifp, uint8_t vrid); |
1d21789e | 564 | |
63d4bd12 | 565 | #endif /* __VRRP_H__ */ |