FD.io VPP  v20.09-64-g4f7b92f0a
Vector Packet Processing
vrrp.c
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1 /*
2  * vrrp.c - vrrp plugin action functions
3  *
4  * Copyright 2019-2020 Rubicon Communications, LLC (Netgate)
5  *
6  * SPDX-License-Identifier: Apache-2.0
7  *
8  */
9 
10 #include <vnet/vnet.h>
11 #include <vnet/plugin/plugin.h>
12 #include <vnet/mfib/mfib_entry.h>
13 #include <vnet/mfib/mfib_table.h>
14 #include <vnet/adj/adj.h>
15 #include <vnet/adj/adj_mcast.h>
16 #include <vnet/fib/fib_table.h>
17 #include <vnet/ip/igmp_packet.h>
18 #include <vnet/ip/ip6_link.h>
19 
20 #include <vrrp/vrrp.h>
21 #include <vrrp/vrrp_packet.h>
22 
23 #include <vpp/app/version.h>
24 
26 
27 static const mac_address_t ipv4_vmac = {
28  .bytes = {0x00, 0x00, 0x5e, 0x00, 0x01, 0x00}
29 };
30 
31 static const mac_address_t ipv6_vmac = {
32  .bytes = {0x00, 0x00, 0x5e, 0x00, 0x02, 0x00}
33 };
34 
35 typedef struct
36 {
40 
41 typedef enum
42 {
47 
48 typedef struct
49 {
53  int intf_up;
55 
57  vrrp_intf_update_t * pending);
58 
59 static walk_rc_t
61 {
62  vrrp_hwif_vr_count_t *vr_count = arg;
63  vrrp_vr_t *vr;
64 
65  vr = vrrp_vr_lookup (sw_if_index, vr_count->key.vr_id,
66  vr_count->key.is_ipv6);
67 
68  if (vr && (vr->runtime.state == VRRP_VR_STATE_MASTER))
69  vr_count->count++;
70 
71  return WALK_CONTINUE;
72 }
73 
74 /*
75  * Get a count of VRs in master state on a given hardware interface with
76  * the provided VR ID and AF.
77  */
78 static u32
80 {
81  vnet_main_t *vnm = vnet_get_main ();
82  vrrp_hwif_vr_count_t vr_count;
83 
84  clib_memset (&vr_count, 0, sizeof (vr_count));
85 
86  vr_count.key.vr_id = vr_id;
87  vr_count.key.is_ipv6 = is_ipv6;
88 
89  vnet_hw_interface_walk_sw (vnm, hw_if_index,
90  vrrp_hwif_master_count_walk, &vr_count);
91 
92  return vr_count.count;
93 }
94 
95 /*
96  * Add or delete the VR virtual MAC address on the hardware interface
97  * when a VR enters or leaves the master state.
98  *
99  * Multiple subinterfaces may host the same VR ID. We should only add or
100  * delete the virtual MAC if this is the first VR being enabled on the
101  * hardware interface or the last one being disabled, respectively.
102  */
103 void
105 {
106  vnet_main_t *vnm = vnet_get_main ();
107  clib_error_t *error = 0;
109  u8 enable = (new_state == VRRP_VR_STATE_MASTER);
110  u32 n_master_vrs;
111 
113  n_master_vrs =
115  vrrp_vr_is_ipv6 (vr));
116 
117  /* enable only if current master vrs is 0, disable only if 0 or 1 */
118  if ((enable && !n_master_vrs) || (!enable && (n_master_vrs < 2)))
119  {
120  clib_warning ("%s virtual MAC address %U on hardware interface %u",
121  (enable) ? "Adding" : "Deleting",
123  hw->hw_if_index);
124 
126  (vnm, hw->hw_if_index, vr->runtime.mac.bytes, enable);
127  }
128 
129  if (error)
130  clib_error_report (error);
131 }
132 
133 /*
134  * Manage VR interface data on transition to/from master:
135  * - enable or disable ARP/ND input feature if appropriate
136  * - update count of VRs in master state
137  */
138 static void
140 {
141  vrrp_intf_t *intf;
142  const char *arc_name = 0, *node_name = 0;
143  const char *mc_arc_name = 0, *mc_node_name = 0;
144  u8 is_ipv6 = vrrp_vr_is_ipv6 (vr);
145  u32 *vr_index;
146  int n_master_accept = 0;
147  int n_started = 0;
148 
149  if (is_ipv6)
150  {
151  arc_name = "ip6-local";
152  node_name = "vrrp6-nd-input";
153  mc_arc_name = "ip6-multicast";
154  mc_node_name = "vrrp6-accept-owner-input";
155  }
156  else
157  {
158  arc_name = "arp";
159  node_name = "vrrp4-arp-input";
160  mc_arc_name = "ip4-multicast";
161  mc_node_name = "vrrp4-accept-owner-input";
162  }
163 
164  intf = vrrp_intf_get (vr->config.sw_if_index);
165 
166  /* Check other VRs on this intf to see if features need to be toggled */
167  vec_foreach (vr_index, intf->vr_indices[is_ipv6])
168  {
169  vrrp_vr_t *intf_vr = vrrp_vr_lookup_index (*vr_index);
170 
171  if (intf_vr == vr)
172  continue;
173 
174  if (intf_vr->runtime.state == VRRP_VR_STATE_INIT)
175  continue;
176 
177  n_started++;
178 
179  if ((intf_vr->runtime.state == VRRP_VR_STATE_MASTER) &&
180  vrrp_vr_accept_mode_enabled (intf_vr))
181  n_master_accept++;
182  }
183 
184  /* If entering/leaving init state, start/stop ARP or ND feature if no other
185  * VRs are active on the interface.
186  */
187  if (((vr->runtime.state == VRRP_VR_STATE_INIT) ||
188  (new_state == VRRP_VR_STATE_INIT)) && (n_started == 0))
189  vnet_feature_enable_disable (arc_name, node_name,
190  vr->config.sw_if_index,
191  (new_state != VRRP_VR_STATE_INIT), NULL, 0);
192 
193  /* Special housekeeping when entering/leaving master mode */
194  if ((vr->runtime.state == VRRP_VR_STATE_MASTER) ||
195  (new_state == VRRP_VR_STATE_MASTER))
196  {
197  /* Maintain count of master state VRs on interface */
198  if (new_state == VRRP_VR_STATE_MASTER)
199  intf->n_master_vrs[is_ipv6]++;
200  else if (intf->n_master_vrs[is_ipv6] > 0)
201  intf->n_master_vrs[is_ipv6]--;
202 
203  /* If accept mode is enabled and no other master on intf has accept
204  * mode enabled, enable/disable feature node to avoid spurious drops by
205  * spoofing check.
206  */
207  if (vrrp_vr_accept_mode_enabled (vr) && !n_master_accept)
208  vnet_feature_enable_disable (mc_arc_name, mc_node_name,
209  vr->config.sw_if_index,
210  (new_state == VRRP_VR_STATE_MASTER),
211  NULL, 0);
212  }
213 }
214 
215 /* If accept mode enabled, add/remove VR addresses from interface */
216 static void
218 {
220  u8 is_del;
221  ip46_address_t *vr_addr;
222 
223  if (!vrrp_vr_accept_mode_enabled (vr))
224  return;
225 
226  /* owner always has VR addresses configured, should never remove them */
227  if (vrrp_vr_is_owner (vr))
228  return;
229 
230  if (vrrp_vr_is_unicast (vr))
231  return;
232 
233  /* only need to do something if entering or leaving master state */
234  if ((vr->runtime.state != VRRP_VR_STATE_MASTER) &&
235  (new_state != VRRP_VR_STATE_MASTER))
236  return;
237 
238  is_del = (new_state != VRRP_VR_STATE_MASTER);
239 
240  clib_warning ("%s VR addresses on sw_if_index %u",
241  (is_del) ? "Deleting" : "Adding", vr->config.sw_if_index);
242 
243  vec_foreach (vr_addr, vr->config.vr_addrs)
244  {
245  ip_interface_address_t *ia = NULL;
246 
247  /* We need to know the address length to use, find it from another
248  * address on the interface. Or use a default (/24, /64).
249  */
250  if (!vrrp_vr_is_ipv6 (vr))
251  {
252  ip4_main_t *im = &ip4_main;
253  ip4_address_t *intf4;
254 
255  intf4 =
257  (im, &vr_addr->ip4, vr->config.sw_if_index, &ia);
258 
260  &vr_addr->ip4,
261  (intf4 ? ia->address_length : 24),
262  is_del);
263  }
264  else
265  {
266  ip6_main_t *im = &ip6_main;
267  ip6_address_t *intf6;
268 
269  intf6 =
271  (im, &vr_addr->ip6, vr->config.sw_if_index, &ia);
272 
274  &vr_addr->ip6,
275  (intf6 ? ia->address_length : 64),
276  is_del);
277  }
278  }
279 }
280 
281 void
283 {
284 
285  clib_warning ("VR %U transitioning to %U", format_vrrp_vr_key, vr,
286  format_vrrp_vr_state, new_state);
287 
288  /* Don't do anything if transitioning to the state VR is already in.
289  * This should never happen, just covering our bases.
290  */
291  if (new_state == vr->runtime.state)
292  return;
293 
294  if (new_state == VRRP_VR_STATE_MASTER)
295  {
296  /* RFC 5798 sec 6.4.1 (105) - startup event for VR with priority 255
297  * sec 6.4.2 (365) - master down timer fires on backup VR
298  */
299 
301  vrrp_adv_send (vr, 0);
303 
305  }
306  else if (new_state == VRRP_VR_STATE_BACKUP)
307  {
308  /* RFC 5798 sec 6.4.1 (150) - startup event for VR with priority < 255
309  * sec 6.4.3 (735) - master preempted by higher priority VR
310  */
311 
313 
314  if (vr->runtime.state == VRRP_VR_STATE_MASTER)
315  {
316  vrrp_header_t *pkt = data;
318 
319  }
320  else /* INIT, INTF_DOWN */
322 
326 
327  }
328  else if (new_state == VRRP_VR_STATE_INIT)
329  {
330  /* RFC 5798 sec 6.4.2 (345) - shutdown event for backup VR
331  * sec 6.4.3 (655) - shutdown event for master VR
332  */
333 
335  if (vr->runtime.state == VRRP_VR_STATE_MASTER)
336  vrrp_adv_send (vr, 1);
337  }
338  else if (new_state == VRRP_VR_STATE_INTF_DOWN)
339  /* State is not specified by RFC. This is to avoid attempting to
340  * send packets on an interface that's down and to avoid having a
341  * VR believe it is already the master when an interface is brought up
342  */
344 
345  /* add/delete virtual IP addrs if accept_mode is true */
346  vrrp_vr_transition_addrs (vr, new_state);
347 
348  /* enable/disable input features if necessary */
349  vrrp_vr_transition_intf (vr, new_state);
350 
351  /* add/delete virtual MAC address on NIC if necessary */
352  vrrp_vr_transition_vmac (vr, new_state);
353 
354  vr->runtime.state = new_state;
355 }
356 
357 #define VRRP4_MCAST_ADDR_AS_U8 { 224, 0, 0, 18 }
358 #define VRRP6_MCAST_ADDR_AS_U8 \
359 { 0xff, 0x2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x12 }
360 
361 static const mfib_prefix_t all_vrrp4_routers = {
363  .fp_len = 32,
364  .fp_grp_addr = {
365  .ip4 = {
366  .as_u8 = VRRP4_MCAST_ADDR_AS_U8,
367  },
368  },
369 };
370 
371 static const mfib_prefix_t all_vrrp6_routers = {
373  .fp_len = 128,
374  .fp_grp_addr = {
375  .ip6 = {
376  .as_u8 = VRRP6_MCAST_ADDR_AS_U8,
377  },
378  },
379 };
380 
381 static int
383 {
384  vrrp_main_t *vrm = &vrrp_main;
385  vrrp_intf_t *intf;
386  u32 fib_index;
387  const mfib_prefix_t *vrrp_prefix;
389  vnet_link_t link_type;
390  fib_route_path_t for_us = {
391  .frp_sw_if_index = 0xffffffff,
392  .frp_weight = 1,
393  .frp_flags = FIB_ROUTE_PATH_LOCAL,
394  .frp_mitf_flags = MFIB_ITF_FLAG_FORWARD,
395  };
396  fib_route_path_t via_itf = {
398  .frp_weight = 1,
399  .frp_mitf_flags = MFIB_ITF_FLAG_ACCEPT,
400  };
401 
402  intf = vrrp_intf_get (sw_if_index);
403 
404  if (is_ipv6)
405  {
406  proto = FIB_PROTOCOL_IP6;
407  link_type = VNET_LINK_IP6;
408  vrrp_prefix = &all_vrrp6_routers;
409  }
410  else
411  {
412  proto = FIB_PROTOCOL_IP4;
413  link_type = VNET_LINK_IP4;
414  vrrp_prefix = &all_vrrp4_routers;
415  }
416 
417  for_us.frp_proto = fib_proto_to_dpo (proto);
418  via_itf.frp_proto = fib_proto_to_dpo (proto);
419  fib_index = mfib_table_get_index_for_sw_if_index (proto, sw_if_index);
420 
421  if (enable)
422  {
423  if (pool_elts (vrm->vrs) == 1)
424  mfib_table_entry_path_update (fib_index, vrrp_prefix, MFIB_SOURCE_API,
425  &for_us);
426 
427  mfib_table_entry_path_update (fib_index, vrrp_prefix, MFIB_SOURCE_API,
428  &via_itf);
429  intf->mcast_adj_index[! !is_ipv6] =
430  adj_mcast_add_or_lock (proto, link_type, sw_if_index);
431  }
432  else
433  {
434  if (pool_elts (vrm->vrs) == 0)
435  mfib_table_entry_path_remove (fib_index, vrrp_prefix, MFIB_SOURCE_API,
436  &for_us);
437 
438  mfib_table_entry_path_remove (fib_index, vrrp_prefix, MFIB_SOURCE_API,
439  &via_itf);
440  }
441 
442  return 0;
443 }
444 
445 static int
447 {
448  vrrp_intf_t *vr_intf;
449 
450  vr_intf = vrrp_intf_get (sw_if_index);
451  if (!vr_intf)
452  return -1;
453 
454  if (is_add)
455  {
456  if (!vec_len (vr_intf->vr_indices[is_ipv6]))
457  vrrp_intf_enable_disable_mcast (1, sw_if_index, is_ipv6);
458 
459  vec_add1 (vr_intf->vr_indices[is_ipv6], vr_index);
460  }
461  else
462  {
463  u32 per_intf_index =
464  vec_search (vr_intf->vr_indices[is_ipv6], vr_index);
465 
466  if (per_intf_index != ~0)
467  vec_del1 (vr_intf->vr_indices[is_ipv6], per_intf_index);
468 
469  /* no more VRs on this interface, disable multicast */
470  if (!vec_len (vr_intf->vr_indices[is_ipv6]))
471  vrrp_intf_enable_disable_mcast (0, sw_if_index, is_ipv6);
472  }
473 
474  return 0;
475 }
476 
477 /* RFC 5798 section 8.3.2 says to take care not to configure more than
478  * one VRRP router as the "IPvX address owner" of a VRID. Make sure that
479  * all of the addresses configured for this VR are configured on the
480  * interface.
481  */
482 static int
484 {
485  ip46_address_t *addr;
486  u8 is_ipv6 = (vr_conf->flags & VRRP_VR_IPV6) != 0;
487 
488  vec_foreach (addr, vr_conf->vr_addrs)
489  {
490  if (!ip_interface_has_address (vr_conf->sw_if_index, addr, !is_ipv6))
491  return VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE;
492  }
493 
494  return 0;
495 }
496 
497 static int
499 {
500  ip46_address_t *vr_addr;
501  u8 is_ipv6 = (vr_conf->flags & VRRP_VR_IPV6) != 0;
502 
503  vec_foreach (vr_addr, vr_conf->vr_addrs)
504  {
505  u32 vr_index;
506  void *addr;
507 
508  addr = (is_ipv6) ? (void *) &vr_addr->ip6 : (void *) &vr_addr->ip4;
509  vr_index = vrrp_vr_lookup_address (vr_conf->sw_if_index, is_ipv6, addr);
510  if (vr_index != ~0)
511  return VNET_API_ERROR_ADDRESS_IN_USE;
512  }
513 
514  return 0;
515 }
516 
517 static int
519 {
520  int ret = 0;
521 
522  /* If the VR owns the addresses, make sure they are configured */
523  if (vr_conf->priority == 255 &&
524  (ret = vrrp_vr_valid_addrs_owner (vr_conf)) < 0)
525  return ret;
526 
527  /* make sure no other VR has already configured any of the VR addresses */
528  ret = vrrp_vr_valid_addrs_unused (vr_conf);
529 
530  return ret;
531 }
532 
533 int
534 vrrp_vr_addr_add_del (vrrp_vr_t * vr, u8 is_add, ip46_address_t * vr_addr)
535 {
536  vrrp_main_t *vmp = &vrrp_main;
537  u32 vr_index;
538  vrrp4_arp_key_t key4;
539  vrrp6_nd_key_t key6;
540  ip46_address_t *addr;
541 
542  if (!vr || !vr_addr)
543  return VNET_API_ERROR_INVALID_ARGUMENT;
544 
545  vr_index = vr - vmp->vrs;
546 
547  if (vrrp_vr_is_ipv6 (vr))
548  {
549  key6.sw_if_index = vr->config.sw_if_index;
550  key6.addr = vr_addr->ip6;
551  if (is_add)
552  {
553  hash_set_mem_alloc (&vmp->vrrp6_nd_lookup, &key6, vr_index);
554  vec_add1 (vr->config.vr_addrs, vr_addr[0]);
555  }
556  else
557  {
558  hash_unset_mem_free (&vmp->vrrp6_nd_lookup, &key6);
559  vec_foreach (addr, vr->config.vr_addrs)
560  {
561  if (!ip46_address_cmp (addr, vr_addr))
562  {
563  vec_del1 (vr->config.vr_addrs, vr->config.vr_addrs - addr);
564  break;
565  }
566  }
567  }
568  }
569  else
570  {
571  key4.sw_if_index = vr->config.sw_if_index;
572  key4.addr = vr_addr->ip4;
573  if (is_add)
574  {
575  hash_set (vmp->vrrp4_arp_lookup, key4.as_u64, vr_index);
576  vec_add1 (vr->config.vr_addrs, vr_addr[0]);
577  }
578  else
579  {
580  hash_unset (vmp->vrrp4_arp_lookup, key4.as_u64);
581  vec_foreach (addr, vr->config.vr_addrs)
582  {
583  if (!ip46_address_cmp (addr, vr_addr))
584  {
585  vec_del1 (vr->config.vr_addrs, vr->config.vr_addrs - addr);
586  break;
587  }
588  }
589  }
590  }
591 
592  return 0;
593 }
594 
595 static void
596 vrrp_vr_addrs_add_del (vrrp_vr_t * vr, u8 is_add, ip46_address_t * vr_addrs)
597 {
598  ip46_address_t *vr_addr;
599 
600  vec_foreach (vr_addr, vr_addrs)
601  {
602  vrrp_vr_addr_add_del (vr, is_add, vr_addr);
603  }
604 }
605 
606 /* Action function shared between message handler and debug CLI */
607 int
609 {
610  vrrp_main_t *vrm = &vrrp_main;
611  vnet_main_t *vnm = vnet_get_main ();
613  uword *p;
614  u32 vr_index;
615  vrrp_vr_t *vr = 0;
616  int ret;
617 
618  if (vr_conf->sw_if_index == ~0 ||
619  !vnet_sw_interface_is_valid (vnm, vr_conf->sw_if_index))
620  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
621 
622  clib_memset (&key, 0, sizeof (key));
623 
624  key.sw_if_index = vr_conf->sw_if_index;
625  key.vr_id = vr_conf->vr_id;
626  key.is_ipv6 = ((vr_conf->flags & VRRP_VR_IPV6) != 0);
627 
628  p = mhash_get (&vrm->vr_index_by_key, &key);
629 
630  if (is_add)
631  {
632  /* does a VR matching this key already exist ? */
633  if (p)
634  {
635  clib_warning ("VR %u for IPv%d already exists on sw_if_index %u",
636  key.vr_id, (key.is_ipv6) ? 6 : 4, key.sw_if_index);
637  return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
638  }
639 
640  /* were IPvX addresses included ? */
641  if (!vec_len (vr_conf->vr_addrs))
642  {
643  clib_warning ("Conf of VR %u for IPv%d on sw_if_index %u "
644  " does not contain IP addresses",
645  key.vr_id, (key.is_ipv6) ? 6 : 4, key.sw_if_index);
646  return VNET_API_ERROR_INVALID_SRC_ADDRESS;
647  }
648 
649  /* Make sure the addresses are ok to use */
650  if ((ret = vrrp_vr_valid_addrs (vr_conf)) < 0)
651  return ret;
652 
653  pool_get_zero (vrm->vrs, vr);
654  vr_index = vr - vrm->vrs;
655 
656  clib_memcpy (&vr->config, vr_conf, sizeof (vrrp_vr_config_t));
657 
658  vr->config.vr_addrs = 0; /* allocate our own memory */
659  vrrp_vr_addrs_add_del (vr, is_add, vr_conf->vr_addrs);
660 
661  vr->runtime.state = VRRP_VR_STATE_INIT;
662  vr->runtime.timer_index = ~0;
663 
664  /* set virtual MAC based on IP version and VR ID */
665  vr->runtime.mac = (key.is_ipv6) ? ipv6_vmac : ipv4_vmac;
666  vr->runtime.mac.bytes[5] = vr_conf->vr_id;
667 
668  mhash_set (&vrm->vr_index_by_key, &key, vr_index, 0);
669  }
670  else
671  {
672  if (!p)
673  {
674  clib_warning ("No VR %u for IPv%d exists on sw_if_index %u",
675  key.vr_id, (key.is_ipv6) ? 6 : 4, key.sw_if_index);
676  return VNET_API_ERROR_NO_SUCH_ENTRY;
677  }
678 
679  vr_index = p[0];
680  vr = pool_elt_at_index (vrm->vrs, vr_index);
681 
683  vrrp_vr_addrs_add_del (vr, is_add, vr->config.vr_addrs);
684  mhash_unset (&vrm->vr_index_by_key, &key, 0);
685  vec_free (vr->config.vr_addrs);
687  pool_put (vrm->vrs, vr);
688  }
689 
690  vrrp_intf_vr_add_del (is_add, vr_conf->sw_if_index, vr_index, key.is_ipv6);
691 
692  return 0;
693 }
694 
695 int
696 vrrp_vr_start_stop (u8 is_start, vrrp_vr_key_t * vr_key)
697 {
698  vrrp_main_t *vmp = &vrrp_main;
699  uword *p;
700  vrrp_vr_t *vr = 0;
701 
702  p = mhash_get (&vmp->vr_index_by_key, vr_key);
703  if (!p)
704  return VNET_API_ERROR_NO_SUCH_ENTRY;
705 
706  vr = pool_elt_at_index (vmp->vrs, p[0]);
707 
708  /* return success if already in the desired state */
709  switch (vr->runtime.state)
710  {
711  case VRRP_VR_STATE_INIT:
712  if (!is_start)
713  {
714  clib_warning ("Attempting to stop already stopped VR (%U)",
715  format_vrrp_vr_key, vr);
716  return 0;
717  }
718  break;
719  default:
720  if (is_start)
721  {
722  clib_warning ("Attempting to start already started VR (%U)",
723  format_vrrp_vr_key, vr);
724  return 0;
725  }
726  break;
727  }
728 
729  if (is_start)
730  {
731  if (vrrp_vr_is_unicast (vr) && vec_len (vr->config.peer_addrs) == 0)
732  {
733  clib_warning ("Cannot start unicast VR without peers");
734  return VNET_API_ERROR_INIT_FAILED;
735  }
736 
737  vmp->n_vrs_started++;
738 
740  NULL))
741  {
742  clib_warning ("VRRP VR started on down interface (%U)",
743  format_vrrp_vr_key, vr);
744  vrrp_vr_transition (vr, VRRP_VR_STATE_INTF_DOWN, NULL);
745  }
746  else if (vrrp_vr_is_owner (vr))
747  vrrp_vr_transition (vr, VRRP_VR_STATE_MASTER, NULL);
748  else
749  vrrp_vr_transition (vr, VRRP_VR_STATE_BACKUP, NULL);
750  }
751  else
752  {
753  vmp->n_vrs_started--;
754 
755  vrrp_vr_transition (vr, VRRP_VR_STATE_INIT, NULL);
756  }
757 
758  clib_warning ("%d VRs configured, %d VRs running",
759  pool_elts (vmp->vrs), vmp->n_vrs_started);
760 
761  return 0;
762 }
763 
764 static int
765 vrrp_vr_set_peers_validate (vrrp_vr_t * vr, ip46_address_t * peers)
766 {
767  if (!vrrp_vr_is_unicast (vr))
768  {
769  clib_warning ("Peers can only be set on a unicast VR");
770  return VNET_API_ERROR_INVALID_ARGUMENT;
771  }
772 
773  if (vr->runtime.state != VRRP_VR_STATE_INIT)
774  {
775  clib_warning ("Cannot set peers on a running VR");
776  return VNET_API_ERROR_RSRC_IN_USE;
777  }
778 
779  if (vec_len (peers) == 0)
780  {
781  clib_warning ("No peer addresses provided");
782  return VNET_API_ERROR_INVALID_DST_ADDRESS;
783  }
784 
785  return 0;
786 }
787 
788 int
789 vrrp_vr_set_peers (vrrp_vr_key_t * vr_key, ip46_address_t * peers)
790 {
791  vrrp_main_t *vmp = &vrrp_main;
792  uword *p;
793  vrrp_vr_t *vr = 0;
794  int ret = 0;
795 
796  p = mhash_get (&vmp->vr_index_by_key, vr_key);
797  if (!p)
798  return VNET_API_ERROR_NO_SUCH_ENTRY;
799 
800  vr = pool_elt_at_index (vmp->vrs, p[0]);
801 
802  ret = vrrp_vr_set_peers_validate (vr, peers);
803  if (ret < 0)
804  return ret;
805 
806  if (vr->config.peer_addrs)
807  vec_free (vr->config.peer_addrs);
808 
809  vr->config.peer_addrs = vec_dup (peers);
810 
811  return 0;
812 }
813 
814 /* Manage reference on the interface to the VRs which track that interface */
815 static void
817 {
818  vrrp_intf_t *intf;
819  u32 vr_index;
820  u8 is_ipv6 = vrrp_vr_is_ipv6 (vr);
821  int i;
822 
823  intf = vrrp_intf_get (sw_if_index);
824  vr_index = vrrp_vr_index (vr);
825 
826  /* Try to find the VR index in the list of tracking VRs */
827  vec_foreach_index (i, intf->tracking_vrs[is_ipv6])
828  {
829  if (vec_elt (intf->tracking_vrs[is_ipv6], i) != vr_index)
830  continue;
831 
832  /* Current index matches VR index */
833  if (!is_add)
834  vec_delete (intf->tracking_vrs[is_ipv6], 1, i);
835 
836  /* If deleting, the job is done. If adding, it's already here */
837  return;
838  }
839 
840  /* vr index was not found. */
841  if (is_add)
842  vec_add1 (intf->tracking_vrs[is_ipv6], vr_index);
843 }
844 
845 /* Check if sw intf admin state is up or in the process of coming up */
846 static int
848 {
849  vnet_main_t *vnm = vnet_get_main ();
850  int admin_up;
851 
852  if (pending && (pending->type == VRRP_IF_UPDATE_SW_ADMIN))
853  admin_up = pending->intf_up;
854  else
855  admin_up = vnet_sw_interface_is_admin_up (vnm, sw_if_index);
856 
857  return admin_up;
858 }
859 
860 /* Check if hw intf link state is up or int the process of coming up */
861 static int
863 {
864  vnet_main_t *vnm = vnet_get_main ();
865  vnet_sw_interface_t *sup_sw;
866  int link_up;
867 
868  sup_sw = vnet_get_sup_sw_interface (vnm, sw_if_index);
869 
870  if (pending && (pending->type == VRRP_IF_UPDATE_HW_LINK) &&
871  (pending->hw_if_index == sup_sw->hw_if_index))
872  link_up = pending->intf_up;
873  else
874  link_up = vnet_hw_interface_is_link_up (vnm, sup_sw->hw_if_index);
875 
876  return link_up;
877 }
878 
879 /* Check if interface has ability to send IP packets. */
880 static int
882 {
883  int ip_up;
884 
885  if (pending && pending->type == VRRP_IF_UPDATE_IP)
886  ip_up = pending->intf_up;
887  else
888  /* Either a unicast address has to be explicitly assigned, or
889  * for IPv6 only, a link local assigned and multicast/ND enabled
890  */
891  ip_up =
892  ((ip_interface_get_first_ip (sw_if_index, !is_ipv6) != 0) ||
893  (is_ipv6 && ip6_link_is_enabled (sw_if_index)));
894 
895  return ip_up;
896 }
897 
898 static int
900 {
901  int admin_up, link_up, ip_up;
902 
903  admin_up = vrrp_intf_sw_admin_up (sw_if_index, pending);
904  link_up = vrrp_intf_hw_link_up (sw_if_index, pending);
905  ip_up = vrrp_intf_ip_up (sw_if_index, is_ipv6, pending);
906 
907  return (admin_up && link_up && ip_up);
908 }
909 
910 /* Examine the state of interfaces tracked by a VR and compute the priority
911  * adjustment that should be applied to the VR. If this is being called
912  * by the hw_link_up_down callback, the pending new flags on the sup hw
913  * interface have not been updated yet, so accept those as an optional
914  * argument.
915  */
916 void
918 {
919  vrrp_vr_tracking_if_t *intf;
920  u32 total_priority = 0;
921 
922  vec_foreach (intf, vr->tracking.interfaces)
923  {
924  if (vrrp_intf_is_up (intf->sw_if_index, vrrp_vr_is_ipv6 (vr), pending))
925  continue;
926 
927  total_priority += intf->priority;
928  }
929 
930  if (total_priority != vr->tracking.interfaces_dec)
931  {
932  clib_warning ("VR %U interface track adjustment change from %u to %u",
934  total_priority);
935  vr->tracking.interfaces_dec = total_priority;
936  }
937 }
938 
939 /* Manage tracked interfaces on a VR */
940 int
942  u8 is_add)
943 {
944  vnet_main_t *vnm = vnet_get_main ();
945  vrrp_vr_tracking_if_t *track_intf;
946 
947  /* VR can't track non-existent interface */
948  if (!vnet_sw_interface_is_valid (vnm, sw_if_index))
949  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
950 
951  /* VR can't track it's own interface */
952  if (sw_if_index == vr->config.sw_if_index)
953  return VNET_API_ERROR_INVALID_SW_IF_INDEX_2;
954 
955  /* update intf vector of tracking VRs */
956  vrrp_intf_tracking_vr_add_del (sw_if_index, vr, is_add);
957 
958  /* update VR vector of tracked interfaces */
959  vec_foreach (track_intf, vr->tracking.interfaces)
960  {
961  if (track_intf->sw_if_index != sw_if_index)
962  continue;
963 
964  /* found it */
965  if (!is_add)
966  vec_delete
967  (vr->tracking.interfaces, 1, track_intf - vr->tracking.interfaces);
968 
969  return 0;
970  }
971 
972  if (is_add)
973  {
974  vec_add2 (vr->tracking.interfaces, track_intf, 1);
975 
976  track_intf->sw_if_index = sw_if_index;
977  track_intf->priority = prio;
978  }
979 
980  return 0;
981 }
982 
983 int
985  vrrp_vr_tracking_if_t * track_ifs, u8 is_add)
986 {
987  vrrp_vr_tracking_if_t *track_if, *ifs_copy;
988  int rv = 0;
989 
990  /* if deleting & track_ifs points to the VR list of tracked intfs, the
991  * vector could be modified as we iterate it. make a copy instead */
992  ifs_copy = vec_dup (track_ifs);
993 
994  /* add each tracked interface in the vector */
995  vec_foreach (track_if, ifs_copy)
996  {
997  rv = vrrp_vr_tracking_if_add_del (vr, track_if->sw_if_index,
998  track_if->priority, (is_add != 0));
999 
1000  /* if operation failed, undo the previous changes */
1001  if (rv)
1002  {
1003  vrrp_vr_tracking_if_t *rb_if;
1004 
1005  for (rb_if = track_if - 1; rb_if >= track_ifs; rb_if -= 1)
1007  rb_if->priority, !(is_add != 0));
1008  break;
1009  }
1010  }
1011 
1012  vec_free (ifs_copy);
1013 
1015 
1016  return rv;
1017 }
1018 
1019 /* Compute priority to advertise on all VRs which track the given interface
1020  * and address family. The flags on an HW interface are not updated until
1021  * after link up/down callbacks are invoked, so if this function is called
1022  * by the link up/down callback, the flags about to be set will be passed
1023  * via the 'pending' argument. Otherwise, pending will be NULL.
1024  */
1025 static void
1027  vrrp_intf_update_t * pending, u8 is_ipv6)
1028 {
1029  u32 *vr_index;
1030  vrrp_vr_t *vr;
1031  vrrp_intf_t *intf = vrrp_intf_get (sw_if_index);
1032 
1033  vec_foreach (vr_index, intf->tracking_vrs[is_ipv6])
1034  {
1035  vr = vrrp_vr_lookup_index (*vr_index);
1036  if (vr)
1037  vrrp_vr_tracking_ifs_compute (vr, pending);
1038  }
1039 }
1040 
1041 /* Interface being brought up/down is a quasi-{startup/shutdown} event.
1042  * Execute an appropriate state transition for all VRs on the interface.
1043  * This function may be invoked by:
1044  * sw interface admin up/down event
1045  * hw interface link up/down event
1046  */
1047 clib_error_t *
1049 {
1050  vrrp_intf_t *intf;
1051  int i;
1052  u32 *vr_index;
1053  vrrp_vr_t *vr;
1054 
1055  intf = vrrp_intf_get (pending->sw_if_index);
1056  if (!intf)
1057  return 0;
1058 
1059  /* adjust state of VR's configured on this interface */
1060  for (i = 0; i < 2; i++)
1061  {
1062  int is_up;
1063 
1064  if (!intf->vr_indices[i])
1065  continue;
1066 
1067  is_up = vrrp_intf_is_up (pending->sw_if_index, i, pending);
1068 
1069  vec_foreach (vr_index, intf->vr_indices[i])
1070  {
1071  vrrp_vr_state_t vr_state;
1072 
1073  vr = vrrp_vr_lookup_index (*vr_index);
1074  if (!vr)
1075  continue;
1076 
1077  if (vr->runtime.state == VRRP_VR_STATE_INIT)
1078  continue; /* VR not started yet, no transition */
1079 
1080  if (!is_up)
1081  vr_state = VRRP_VR_STATE_INTF_DOWN;
1082  else
1083  {
1084  if (vr->runtime.state != VRRP_VR_STATE_INTF_DOWN)
1085  continue; /* shouldn't happen */
1086 
1087  vr_state = (vrrp_vr_is_owner (vr)) ?
1088  VRRP_VR_STATE_MASTER : VRRP_VR_STATE_BACKUP;
1089  }
1090 
1091  vrrp_vr_transition (vr, vr_state, NULL);
1092  }
1093  }
1094 
1095  /* compute adjustments on any VR's tracking this interface */
1096  vrrp_intf_tracking_vrs_compute (pending->sw_if_index, pending,
1097  0 /* is_ipv6 */ );
1098  vrrp_intf_tracking_vrs_compute (pending->sw_if_index, pending,
1099  1 /* is_ipv6 */ );
1100 
1101  return 0;
1102 }
1103 
1104 /* Process change in admin status on an interface */
1105 clib_error_t *
1107  u32 flags)
1108 {
1109  vrrp_intf_update_t pending = {
1111  .sw_if_index = sw_if_index,
1112  .intf_up = ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0),
1113  };
1114 
1115  return vrrp_sw_interface_up_down (&pending);
1116 }
1117 
1119 
1120 static walk_rc_t
1122  u32 sw_if_index, void *arg)
1123 {
1124  vrrp_intf_update_t *pending = arg;
1125 
1126  pending->sw_if_index = sw_if_index;
1127  vrrp_sw_interface_up_down (pending);
1128 
1129  return WALK_CONTINUE;
1130 }
1131 
1132 static clib_error_t *
1134 {
1135  vrrp_intf_update_t pending = {
1137  .hw_if_index = hw_if_index,
1138  .intf_up = ((flags & VNET_HW_INTERFACE_FLAG_LINK_UP) != 0),
1139  };
1140 
1141  /* walk the sw interface and sub interfaces to adjust interface tracking */
1142  vnet_hw_interface_walk_sw (vnm, hw_if_index,
1144 
1145  return 0;
1146 }
1147 
1149 
1150 static void
1152  uword opaque,
1153  u32 sw_if_index,
1155  u32 address_length,
1156  u32 if_address_index, u32 is_del)
1157 {
1158  vrrp_intf_tracking_vrs_compute (sw_if_index, NULL, 0 /* is_ipv6 */ );
1159 }
1160 
1162 
1163 static u8 *
1164 format_vrrp_ip6_link (u8 * s, va_list * args)
1165 {
1166  index_t indi = va_arg (*args, index_t);
1167  u32 indent = va_arg (*args, u32);
1168  vrrp_intf_t *intf;
1169  u32 *vr_index;
1170 
1171  intf = vrrp_intf_get ((u32) indi);
1172 
1173  s = format (s, "%UVRRP VRs monitoring this link:\n",
1174  format_white_space, indent);
1175 
1176  vec_foreach (vr_index, intf->tracking_vrs[1])
1177  {
1178  vrrp_vr_t *vr = vrrp_vr_lookup_index (*vr_index);
1179 
1180  s = format (s, "%U%U\n", format_white_space, indent + 2,
1181  format_vrrp_vr_key, vr);
1182  }
1183 
1184  return s;
1185 }
1186 
1187 static void
1189 {
1190  vrrp_intf_update_t pending = {
1192  .sw_if_index = sw_if_index,
1193  .intf_up = enable,
1194  };
1195 
1196  vrrp_intf_tracking_vrs_compute (sw_if_index, &pending, 1 /* is_ipv6 */ );
1197 }
1198 
1199 static void
1201 {
1202  vrrp_intf_ip6_enable_disable (sw_if_index, 1 /* enable */ );
1203  ip6_link_delegate_update (sw_if_index, vrrp_ip6_delegate_id, sw_if_index);
1204 }
1205 
1206 static void
1208 {
1209  vrrp_intf_ip6_enable_disable (indi, 0 /* enable */ );
1210 }
1211 
1212 const static ip6_link_delegate_vft_t vrrp_ip6_delegate_vft = {
1214  .ildv_disable = vrrp_intf_ip6_disable,
1215  .ildv_format = format_vrrp_ip6_link,
1216 };
1217 
1218 static clib_error_t *
1220 {
1221  vrrp_main_t *vmp = &vrrp_main;
1222  clib_error_t *error = 0;
1223  ip4_main_t *im4 = &ip4_main;
1225  vlib_node_t *intf_output_node;
1226 
1227  clib_memset (vmp, 0, sizeof (*vmp));
1228 
1229  if ((error = vlib_call_init_function (vm, ip4_lookup_init)) ||
1230  (error = vlib_call_init_function (vm, ip6_lookup_init)))
1231  return error;
1232 
1233  vmp->vlib_main = vm;
1234  vmp->vnet_main = vnet_get_main ();
1235 
1236  intf_output_node = vlib_get_node_by_name (vm, (u8 *) "interface-output");
1237  vmp->intf_output_node_idx = intf_output_node->index;
1238 
1239  error = vrrp_plugin_api_hookup (vm);
1240 
1241  if (error)
1242  return error;
1243 
1244  mhash_init (&vmp->vr_index_by_key, sizeof (u32), sizeof (vrrp_vr_key_t));
1245  vmp->vrrp4_arp_lookup = hash_create (0, sizeof (uword));
1246  vmp->vrrp6_nd_lookup = hash_create_mem (0, sizeof (vrrp6_nd_key_t),
1247  sizeof (uword));
1248 
1250  cb4.function_opaque = 0;
1252 
1253  vrrp_ip6_delegate_id = ip6_link_delegate_register (&vrrp_ip6_delegate_vft);
1254 
1255  return error;
1256 }
1257 
1259 
1260 
1261 /* *INDENT-OFF* */
1263 {
1264  .version = VPP_BUILD_VER,
1265  .description = "VRRP v3 (RFC 5798)",
1266 };
1267 /* *INDENT-ON* */
1268 
1269 /*
1270  * fd.io coding-style-patch-verification: ON
1271  *
1272  * Local Variables:
1273  * eval: (c-set-style "gnu")
1274  * End:
1275  */
static u8 * format_vrrp_ip6_link(u8 *s, va_list *args)
Definition: vrrp.c:1164
u8 ip_interface_has_address(u32 sw_if_index, ip46_address_t *ip, u8 is_ip4)
Definition: ip_interface.c:140
u32 timer_index
Definition: vrrp.h:102
static int vrrp_vr_valid_addrs(vrrp_vr_config_t *vr_conf)
Definition: vrrp.c:518
u8 n_master_vrs[2]
Definition: vrrp.h:141
u8 * format_vrrp_vr_state(u8 *s, va_list *args)
Definition: vrrp_format.c:47
#define vec_foreach_index(var, v)
Iterate over vector indices.
u8 vr_id
Definition: vrrp.h:32
static u8 vrrp_vr_is_unicast(vrrp_vr_t *vr)
Definition: vrrp.h:317
clib_error_t * vrrp_sw_interface_up_down(vrrp_intf_update_t *pending)
Definition: vrrp.c:1048
#define hash_set(h, key, value)
Definition: hash.h:255
static void vrrp_vr_transition_addrs(vrrp_vr_t *vr, vrrp_vr_state_t new_state)
Definition: vrrp.c:217
u32 sw_if_index
Definition: vrrp.h:71
static u32 vrrp_vr_index(vrrp_vr_t *vr)
Definition: vrrp.h:347
ip4_add_del_interface_address_callback_t * add_del_interface_address_callbacks
Functions to call when interface address changes.
Definition: ip4.h:140
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(vrrp_sw_interface_admin_up_down)
vrrp_vr_tracking_t tracking
Definition: vrrp.h:110
#define hash_unset(h, key)
Definition: hash.h:261
vl_api_wireguard_peer_flags_t flags
Definition: wireguard.api:103
int vrrp_vr_start_stop(u8 is_start, vrrp_vr_key_t *vr_key)
Definition: vrrp.c:696
A representation of a path as described by a route producer.
Definition: fib_types.h:490
static clib_error_t * vrrp_init(vlib_main_t *vm)
Definition: vrrp.c:1219
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
static clib_error_t * ip4_lookup_init(vlib_main_t *vm)
Definition: ip4_forward.c:1148
#define pool_get_zero(P, E)
Allocate an object E from a pool P and zero it.
Definition: pool.h:255
#define VRRP4_MCAST_ADDR_AS_U8
Definition: vrrp.c:357
Definition: vrrp.h:106
adj_index_t mcast_adj_index[2]
Definition: vrrp.h:138
VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(vrrp_hw_interface_link_up_down)
fib_node_index_t mfib_table_entry_path_update(u32 fib_index, const mfib_prefix_t *prefix, mfib_source_t source, const fib_route_path_t *rpath)
Add n paths to an entry (aka route) in the FIB.
Definition: mfib_table.c:325
static const mfib_prefix_t all_vrrp6_routers
Definition: vrrp.c:371
void * ip_interface_get_first_ip(u32 sw_if_index, u8 is_ip4)
Definition: ip_interface.c:174
void vrrp_vr_transition_vmac(vrrp_vr_t *vr, vrrp_vr_state_t new_state)
Definition: vrrp.c:104
void vnet_hw_interface_walk_sw(vnet_main_t *vnm, u32 hw_if_index, vnet_hw_sw_interface_walk_t fn, void *ctx)
Walk the SW interfaces on a HW interface - this is the super interface and any sub-interfaces.
Definition: interface.c:1053
uword mhash_unset(mhash_t *h, void *key, uword *old_value)
Definition: mhash.c:346
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
u32 index
Definition: node.h:279
u8 vr_id
Definition: vrrp.api:17
u32 index_t
A Data-Path Object is an object that represents actions that are applied to packets are they are swit...
Definition: dpo.h:41
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:592
vrrp_vr_t * vrs
Definition: vrrp.h:151
static int vrrp_intf_sw_admin_up(u32 sw_if_index, vrrp_intf_update_t *pending)
Definition: vrrp.c:847
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
Definition: vec.h:630
int vrrp_vr_set_peers(vrrp_vr_key_t *vr_key, ip46_address_t *peers)
Definition: vrrp.c:789
vlib_main_t * vm
Definition: in2out_ed.c:1582
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
dpo_proto_t frp_proto
The protocol of the address below.
Definition: fib_types.h:495
vrrp_vr_state_t state
Definition: vrrp.h:96
void vrrp_vr_tracking_ifs_compute(vrrp_vr_t *vr, vrrp_intf_update_t *pending)
Definition: vrrp.c:917
static int vrrp_intf_is_up(u32 sw_if_index, u8 is_ipv6, vrrp_intf_update_t *pending)
Definition: vrrp.c:899
static int vrrp_intf_hw_link_up(u32 sw_if_index, vrrp_intf_update_t *pending)
Definition: vrrp.c:862
vhost_vring_addr_t addr
Definition: vhost_user.h:111
static u16 vrrp_adv_int_from_packet(vrrp_header_t *pkt)
Definition: vrrp_packet.h:45
unsigned char u8
Definition: types.h:56
static vrrp_vr_t * vrrp_vr_lookup_index(u32 vr_index)
Definition: vrrp.h:250
u8 data[128]
Definition: ipsec_types.api:89
enum fib_protocol_t_ fib_protocol_t
Protocol Type.
u32 * tracking_vrs[2]
Definition: vrrp.h:135
#define clib_memcpy(d, s, n)
Definition: string.h:180
enum walk_rc_t_ walk_rc_t
Walk return code.
u32 hw_if_index
Definition: vrrp.c:52
static const u8 vrrp_prefix[]
Definition: arp.c:64
uword * vrrp6_nd_lookup
Definition: vrrp.h:165
u16 master_adv_int
Definition: vrrp.h:97
u8 * format_ethernet_address(u8 *s, va_list *args)
Definition: format.c:44
u32 frp_sw_if_index
The interface.
Definition: fib_types.h:530
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:173
u32 mfib_table_get_index_for_sw_if_index(fib_protocol_t proto, u32 sw_if_index)
Get the index of the FIB bound to the interface.
Definition: mfib_table.c:527
static int ip46_address_cmp(const ip46_address_t *ip46_1, const ip46_address_t *ip46_2)
Definition: ip46_address.h:80
u8 * format_white_space(u8 *s, va_list *va)
Definition: std-formats.c:129
vrrp_vr_config_t config
Definition: vrrp.h:108
static void vrrp_intf_ip6_enable_disable(u32 sw_if_index, int enable)
Definition: vrrp.c:1188
static void vrrp_vr_transition_intf(vrrp_vr_t *vr, vrrp_vr_state_t new_state)
Definition: vrrp.c:139
static vnet_sw_interface_t * vnet_get_sup_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
static int vrrp_intf_vr_add_del(u8 is_add, u32 sw_if_index, u32 vr_index, u8 is_ipv6)
Definition: vrrp.c:446
static u8 vrrp_vr_is_owner(vrrp_vr_t *vr)
Definition: vrrp.h:323
unsigned int u32
Definition: types.h:88
#define vec_search(v, E)
Search a vector for the index of the entry that matches.
Definition: vec.h:1012
#define vlib_call_init_function(vm, x)
Definition: init.h:270
static uword vnet_sw_interface_is_valid(vnet_main_t *vnm, u32 sw_if_index)
static u8 vrrp_vr_accept_mode_enabled(vrrp_vr_t *vr)
Definition: vrrp.h:341
mac_address_t mac
Definition: vrrp.h:100
mhash_t vr_index_by_key
Definition: vrrp.h:161
u16 n_vrs_started
Definition: vrrp.h:158
clib_error_t * ip4_add_del_interface_address(vlib_main_t *vm, u32 sw_if_index, ip4_address_t *address, u32 address_length, u32 is_del)
Definition: ip4_forward.c:872
static void vrrp_intf_tracking_vrs_compute(u32 sw_if_index, vrrp_intf_update_t *pending, u8 is_ipv6)
Definition: vrrp.c:1026
#define hash_create_mem(elts, key_bytes, value_bytes)
Definition: hash.h:661
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:534
vlib_node_t * vlib_get_node_by_name(vlib_main_t *vm, u8 *name)
Definition: node.c:45
u8 * format_vrrp_vr_key(u8 *s, va_list *args)
Definition: vrrp_format.c:65
u8 priority
Definition: vrrp.h:73
vl_api_ip_proto_t proto
Definition: acl_types.api:50
u32 sw_if_index
Definition: vrrp.h:31
vrrp_vr_flags_t flags
Definition: vrrp.h:75
VLIB_PLUGIN_REGISTER()
static walk_rc_t vrrp_hwif_master_count_walk(vnet_main_t *vnm, u32 sw_if_index, void *arg)
Definition: vrrp.c:60
int vrrp_garp_or_na_send(vrrp_vr_t *vr)
Definition: vrrp_packet.c:459
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:302
#define vec_dup(V)
Return copy of vector (no header, no alignment)
Definition: vec.h:429
u8 vr_id
Definition: vrrp.h:72
#define vec_del1(v, i)
Delete the element at index I.
Definition: vec.h:875
vrrp_vr_runtime_t runtime
Definition: vrrp.h:109
ip6_main_t ip6_main
Definition: ip6_forward.c:2781
static void vrrp_vr_master_down_compute(vrrp_vr_t *vr)
Definition: vrrp.h:222
vrrp_intf_update_type_t
Definition: vrrp.c:41
static uword mhash_set(mhash_t *h, void *key, uword new_value, uword *old_value)
Definition: mhash.h:117
static u8 vrrp_vr_is_ipv6(vrrp_vr_t *vr)
Definition: vrrp.h:311
int vrrp_vr_multicast_group_join(vrrp_vr_t *vr)
Definition: vrrp_packet.c:682
int vrrp_vr_tracking_if_add_del(vrrp_vr_t *vr, u32 sw_if_index, u8 prio, u8 is_add)
Definition: vrrp.c:941
static const mfib_prefix_t all_vrrp4_routers
Definition: vrrp.c:361
static void vrrp_intf_tracking_vr_add_del(u32 sw_if_index, vrrp_vr_t *vr, u8 is_add)
Definition: vrrp.c:816
void mhash_init(mhash_t *h, uword n_value_bytes, uword n_key_bytes)
Definition: mhash.c:168
u8 is_ipv6
Definition: vrrp.h:33
sll srl srl sll sra u16x4 i
Definition: vector_sse42.h:317
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:380
ip4_add_del_interface_address_function_t * function
Definition: ip4.h:74
static void vrrp_vr_addrs_add_del(vrrp_vr_t *vr, u8 is_add, ip46_address_t *vr_addrs)
Definition: vrrp.c:596
static ip4_address_t * ip4_interface_address_matching_destination(ip4_main_t *im, const ip4_address_t *dst, u32 sw_if_index, ip_interface_address_t **result_ia)
Definition: ip4.h:238
#define clib_warning(format, args...)
Definition: error.h:59
static int vrrp_vr_valid_addrs_owner(vrrp_vr_config_t *vr_conf)
Definition: vrrp.c:483
static int vrrp_intf_ip_up(u32 sw_if_index, u8 is_ipv6, vrrp_intf_update_t *pending)
Definition: vrrp.c:881
vrrp_intf_update_type_t type
Definition: vrrp.c:50
Aggregate type for a prefix.
Definition: mfib_types.h:24
u32 * vr_indices[2]
Definition: vrrp.h:131
vrrp_main_t vrrp_main
Definition: vrrp.c:25
#define hash_create(elts, value_bytes)
Definition: hash.h:696
static walk_rc_t vrrp_hw_interface_link_up_down_walk(vnet_main_t *vnm, u32 sw_if_index, void *arg)
Definition: vrrp.c:1121
manual_print typedef address
Definition: ip_types.api:85
u32 intf_output_node_idx
Definition: vrrp.h:175
static uword * mhash_get(mhash_t *h, const void *key)
Definition: mhash.h:110
#define vec_delete(V, N, M)
Delete N elements starting at element M.
Definition: vec.h:854
enum vnet_link_t_ vnet_link_t
Link Type: A description of the protocol of packets on the link.
int vrrp_adv_send(vrrp_vr_t *vr, int shutdown)
Definition: vrrp_packet.c:272
IPv4 main type.
Definition: ip4.h:106
vrrp_vr_tracking_if_t * interfaces
Definition: vrrp.h:65
void vrrp_vr_timer_set(vrrp_vr_t *vr, vrrp_vr_timer_type_t type)
Definition: vrrp_periodic.c:89
static int vrrp_vr_valid_addrs_unused(vrrp_vr_config_t *vr_conf)
Definition: vrrp.c:498
int vrrp_vr_add_del(u8 is_add, vrrp_vr_config_t *vr_conf)
Definition: vrrp.c:608
#define clib_error_report(e)
Definition: error.h:113
static void hash_unset_mem_free(uword **h, const void *key)
Definition: hash.h:295
enum vrrp_vr_state vrrp_vr_state_t
dpo_proto_t fib_proto_to_dpo(fib_protocol_t fib_proto)
Definition: fib_types.c:324
static ip6_link_delegate_id_t vrrp_ip6_delegate_id
Definition: vrrp.c:1161
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
vrrp_vr_key_t key
Definition: vrrp.c:37
static uword vnet_sw_interface_is_admin_up(vnet_main_t *vnm, u32 sw_if_index)
#define vec_elt(v, i)
Get vector value at index i.
typedef key
Definition: ipsec_types.api:85
fib_protocol_t fp_proto
protocol type
Definition: mfib_types.h:33
static void vrrp_ip4_add_del_interface_addr(ip4_main_t *im, uword opaque, u32 sw_if_index, ip4_address_t *address, u32 address_length, u32 if_address_index, u32 is_del)
Definition: vrrp.c:1151
static vrrp_intf_t * vrrp_intf_get(u32 sw_if_index)
Definition: vrrp.h:288
void vrrp_vr_timer_cancel(vrrp_vr_t *vr)
Definition: vrrp_periodic.c:58
u32 interfaces_dec
Definition: vrrp.h:66
A for-us/local path.
Definition: fib_types.h:338
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
static u32 vrrp_vr_hwif_master_vrs_by_vrid(u32 hw_if_index, u8 vr_id, u8 is_ipv6)
Definition: vrrp.c:79
static int vrrp_vr_set_peers_validate(vrrp_vr_t *vr, ip46_address_t *peers)
Definition: vrrp.c:765
u64 uword
Definition: types.h:112
static int vrrp_intf_enable_disable_mcast(u8 enable, u32 sw_if_index, u8 is_ipv6)
Definition: vrrp.c:382
clib_error_t * vrrp_plugin_api_hookup(vlib_main_t *vm)
Definition: vrrp_api.c:492
static vrrp_vr_t * vrrp_vr_lookup(u32 sw_if_index, u8 vr_id, u8 is_ipv6)
Definition: vrrp.h:230
u32 sw_if_index
Definition: vrrp.c:51
vnet_main_t * vnet_main
Definition: vrrp.h:172
static void vrrp_intf_ip6_disable(index_t indi)
Definition: vrrp.c:1207
static clib_error_t * vrrp_hw_interface_link_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: vrrp.c:1133
uword * vrrp4_arp_lookup
Definition: vrrp.h:164
ip4_main_t ip4_main
Global ip4 main structure.
Definition: ip4_forward.c:1144
adj_index_t adj_mcast_add_or_lock(fib_protocol_t proto, vnet_link_t link_type, u32 sw_if_index)
Mcast Adjacency.
Definition: adj_mcast.c:51
#define vec_foreach(var, vec)
Vector iterator.
ip46_address_t * vr_addrs
Definition: vrrp.h:76
clib_error_t * ip6_add_del_interface_address(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *address, u32 address_length, u32 is_del)
Definition: ip6_forward.c:297
static void hash_set_mem_alloc(uword **h, const void *key, uword v)
Definition: hash.h:279
bool is_ipv6
Definition: dhcp.api:202
clib_error_t * vnet_hw_interface_add_del_mac_address(vnet_main_t *vnm, u32 hw_if_index, const u8 *mac_address, u8 is_add)
Definition: interface.c:1460
static void vrrp_intf_ip6_enable(u32 sw_if_index)
Definition: vrrp.c:1200
static ip6_address_t * ip6_interface_address_matching_destination(ip6_main_t *im, const ip6_address_t *dst, u32 sw_if_index, ip_interface_address_t **result_ia)
Definition: ip6.h:307
u16 adv_interval
Definition: vrrp.h:74
static clib_error_t * ip6_lookup_init(vlib_main_t *vm)
Definition: ip6_forward.c:2785
ip46_address_t * peer_addrs
Definition: vrrp.h:77
void mfib_table_entry_path_remove(u32 fib_index, const mfib_prefix_t *prefix, mfib_source_t source, const fib_route_path_t *rpath)
Remove n paths to an entry (aka route) in the FIB.
Definition: mfib_table.c:407
int vrrp_vr_tracking_ifs_add_del(vrrp_vr_t *vr, vrrp_vr_tracking_if_t *track_ifs, u8 is_add)
Definition: vrrp.c:984
static void vrrp_vr_skew_compute(vrrp_vr_t *vr)
Definition: vrrp.h:213
static uword vnet_hw_interface_is_link_up(vnet_main_t *vnm, u32 hw_if_index)
int vrrp_vr_addr_add_del(vrrp_vr_t *vr, u8 is_add, ip46_address_t *vr_addr)
Definition: vrrp.c:534
vl_api_interface_index_t sw_if_index
Definition: wireguard.api:33
clib_error_t * vrrp_sw_interface_admin_up_down(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: vrrp.c:1106
vlib_main_t * vlib_main
Definition: vrrp.h:171
int vnet_feature_enable_disable(const char *arc_name, const char *node_name, u32 sw_if_index, int enable_disable, void *feature_config, u32 n_feature_config_bytes)
Definition: feature.c:303
static u32 vrrp_vr_lookup_address(u32 sw_if_index, u8 is_ipv6, void *addr)
Definition: vrrp.h:261
#define VRRP6_MCAST_ADDR_AS_U8
Definition: vrrp.c:358
void vrrp_vr_transition(vrrp_vr_t *vr, vrrp_vr_state_t new_state, void *data)
Definition: vrrp.c:282
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128