2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vlibmemory/api.h>
17 #include <lisp/lisp-cp/control.h>
18 #include <lisp/lisp-cp/packets.h>
19 #include <lisp/lisp-cp/lisp_msg_serdes.h>
20 #include <lisp/lisp-gpe/lisp_gpe_fwd_entry.h>
21 #include <lisp/lisp-gpe/lisp_gpe_tenant.h>
22 #include <lisp/lisp-gpe/lisp_gpe_tunnel.h>
23 #include <vnet/fib/fib_entry.h>
24 #include <vnet/fib/fib_table.h>
25 #include <vnet/ethernet/arp_packet.h>
26 #include <vnet/ethernet/packet.h>
28 #include <openssl/evp.h>
29 #include <vnet/crypto/crypto.h>
31 #define MAX_VALUE_U24 0xffffff
33 /* mapping timer control constants (in seconds) */
34 #define TIME_UNTIL_REFETCH_OR_DELETE 20
35 #define MAPPING_TIMEOUT (((m->ttl) * 60) - TIME_UNTIL_REFETCH_OR_DELETE)
37 u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
38 static void *send_map_request_thread_fn (void *arg);
42 LISP_CP_INPUT_NEXT_DROP,
44 } lisp_cp_input_next_t;
55 vnet_lisp_get_map_request_mode (void)
57 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
58 return lcm->map_request_mode;
62 auth_data_len_by_key_id (lisp_key_type_t key_id)
67 return SHA1_AUTH_DATA_LEN;
68 case HMAC_SHA_256_128:
69 return SHA256_AUTH_DATA_LEN;
71 clib_warning ("unsupported key type: %d!", key_id);
78 queue_map_request (gid_address_t * seid, gid_address_t * deid,
79 u8 smr_invoked, u8 is_resend);
81 ip_interface_address_t *
82 ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
83 u32 sw_if_index, u8 loop)
85 vnet_main_t *vnm = vnet_get_main ();
86 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
87 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
88 sw_if_index = swif->unnumbered_sw_if_index;
90 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
91 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
93 return pool_elt_at_index ((lm)->if_address_pool, ia);
97 ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
100 ip_interface_address_t *ia;
102 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
105 return ip_interface_address_get_address (lm, ia);
109 ip_interface_get_first_ip_address (lisp_cp_main_t *lcm, u32 sw_if_index,
110 ip_address_family_t version,
111 ip_address_t *result)
113 ip_lookup_main_t *lm;
116 lm = (version == AF_IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
117 addr = ip_interface_get_first_address (lm, sw_if_index, version);
121 ip_address_set (result, addr, version);
126 * Find the sw_if_index of the interface that would be used to egress towards
130 ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
132 fib_node_index_t fei;
135 ip_address_to_fib_prefix (dst, &prefix);
137 fei = fib_table_lookup (0, &prefix);
139 return (fib_entry_get_resolving_interface (fei));
143 * Find first IP of the interface that would be used to egress towards dst.
144 * Returns 1 if the address is found 0 otherwise.
147 ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
148 ip_address_t * result)
151 ip_lookup_main_t *lm;
153 ip_address_family_t ipver;
155 ASSERT (result != 0);
157 ipver = ip_addr_version (dst);
159 lm = (ipver == AF_IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
160 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
165 /* find the first ip address */
166 addr = ip_interface_get_first_address (lm, si, ipver);
170 ip_address_set (result, addr, ipver);
175 dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add,
176 u8 with_default_route)
182 dp_table = hash_get (lcm->table_id_by_vni, vni);
186 clib_warning ("vni %d not associated to a vrf!", vni);
187 return VNET_API_ERROR_INVALID_VALUE;
192 dp_table = hash_get (lcm->bd_id_by_vni, vni);
195 clib_warning ("vni %d not associated to a bridge domain!", vni);
196 return VNET_API_ERROR_INVALID_VALUE;
200 /* enable/disable data-plane interface */
204 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
206 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0],
212 lisp_gpe_tenant_l2_iface_unlock (vni);
214 lisp_gpe_tenant_l3_iface_unlock (vni);
221 dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 dst_map_index)
223 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
226 clib_memset (a, 0, sizeof (*a));
228 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
232 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
234 /* delete dp fwd entry */
237 a->locator_pairs = fe->locator_pairs;
238 a->vni = gid_address_vni (&fe->reid);
239 gid_address_copy (&a->rmt_eid, &fe->reid);
241 gid_address_copy (&a->lcl_eid, &fe->leid);
243 vnet_lisp_gpe_del_fwd_counters (a, feip[0]);
244 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
246 /* delete entry in fwd table */
247 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
248 vec_free (fe->locator_pairs);
249 pool_put (lcm->fwd_entry_pool, fe);
253 * Finds first remote locator with best (lowest) priority that has a local
254 * peer locator with an underlying route to it.
258 get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
259 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
261 u32 i, limitp = 0, li, found = 0, esi;
262 locator_set_t *rmt_ls, *lcl_ls;
263 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
264 locator_t *lp, *rmt = 0;
269 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
271 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
273 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
280 /* find unvisited remote locator with best priority */
281 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
283 if (0 != hash_get (checked, i))
286 li = vec_elt (rmt_ls->locator_indices, i);
287 lp = pool_elt_at_index (lcm->locator_pool, li);
289 /* we don't support non-IP locators for now */
290 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
293 if ((found && lp->priority == limitp)
294 || (!found && lp->priority >= limitp))
298 /* don't search for locators with lower priority and don't
299 * check this locator again*/
300 limitp = lp->priority;
301 hash_set (checked, i, 1);
305 /* check if a local locator with a route to remote locator exists */
308 /* find egress sw_if_index for rmt locator */
310 ip_fib_get_egress_iface_for_dst (lcm,
311 &gid_address_ip (&rmt->address));
312 if ((u32) ~ 0 == esi)
315 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
317 li = vec_elt (lcl_ls->locator_indices, i);
318 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
320 /* found local locator with the needed sw_if_index */
321 if (sl->sw_if_index == esi)
323 /* and it has an address */
324 if (0 == ip_interface_get_first_ip_address (lcm,
326 gid_address_ip_version
331 clib_memset (&pair, 0, sizeof (pair));
332 ip_address_copy (&pair.rmt_loc,
333 &gid_address_ip (&rmt->address));
334 ip_address_copy (&pair.lcl_loc, lcl_addr);
335 pair.weight = rmt->weight;
336 pair.priority = rmt->priority;
337 vec_add1 (locator_pairs[0], pair);
351 gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
354 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
358 switch (fid_addr_type (fid))
360 case FID_ADDR_IP_PREF:
361 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
362 gid_address_ippref (dst) = fid_addr_ippref (fid);
365 gid_address_type (dst) = GID_ADDR_MAC;
366 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
369 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
375 vnet_lisp_map_register_state_get (void)
377 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
378 return lcm->map_registering;
382 vnet_lisp_rloc_probe_state_get (void)
384 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
385 return lcm->rloc_probing;
389 dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
391 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
392 gid_address_t *rmt_eid, *lcl_eid;
393 mapping_t *lcl_map, *rmt_map;
394 u32 sw_if_index, **rmts, rmts_idx;
395 uword *feip = 0, *dpid, *rmts_stored_idxp = 0;
397 u8 type, is_src_dst = 0;
400 clib_memset (a, 0, sizeof (*a));
402 /* remove entry if it already exists */
403 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
405 dp_del_fwd_entry (lcm, dst_map_index);
408 * Determine local mapping and eid
410 if (lcm->flags & LISP_FLAG_PITR_MODE)
412 if (lcm->pitr_map_index != ~0)
413 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
416 clib_warning ("no PITR mapping configured!");
421 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
422 lcl_eid = &lcl_map->eid;
425 * Determine remote mapping and eid
427 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
428 rmt_eid = &rmt_map->eid;
431 * Build and insert data plane forwarding entry
435 if (MR_MODE_SRC_DST == lcm->map_request_mode)
437 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
439 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
440 &gid_address_sd_dst (rmt_eid));
441 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
442 &gid_address_sd_src (rmt_eid));
446 gid_address_copy (&a->rmt_eid, rmt_eid);
447 gid_address_copy (&a->lcl_eid, lcl_eid);
452 gid_address_copy (&a->rmt_eid, rmt_eid);
454 a->vni = gid_address_vni (&a->rmt_eid);
455 a->is_src_dst = is_src_dst;
457 /* get vrf or bd_index associated to vni */
458 type = gid_address_type (&a->rmt_eid);
459 if (GID_ADDR_IP_PREFIX == type)
461 dpid = hash_get (lcm->table_id_by_vni, a->vni);
464 clib_warning ("vni %d not associated to a vrf!", a->vni);
467 a->table_id = dpid[0];
469 else if (GID_ADDR_MAC == type)
471 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
474 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
480 /* find best locator pair that 1) verifies LISP policy 2) are connected */
481 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
483 /* Either rmt mapping is negative or we can't find underlay path.
484 * Try again with petr if configured */
485 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
487 rmt_map = lisp_get_petr_mapping (lcm);
488 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
495 a->action = rmt_map->action;
498 rv = vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
501 if (a->locator_pairs)
502 vec_free (a->locator_pairs);
506 /* add tunnel to fwd entry table */
507 pool_get (lcm->fwd_entry_pool, fe);
508 vnet_lisp_gpe_add_fwd_counters (a, fe - lcm->fwd_entry_pool);
510 fe->locator_pairs = a->locator_pairs;
511 gid_address_copy (&fe->reid, &a->rmt_eid);
514 gid_address_copy (&fe->leid, &a->lcl_eid);
516 gid_address_copy (&fe->leid, lcl_eid);
518 fe->is_src_dst = is_src_dst;
519 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
520 fe - lcm->fwd_entry_pool);
522 /* Add rmt mapping to the vector of adjacent mappings to lcl mapping */
524 hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index);
525 if (!rmts_stored_idxp)
527 pool_get (lcm->lcl_to_rmt_adjacencies, rmts);
528 clib_memset (rmts, 0, sizeof (*rmts));
529 rmts_idx = rmts - lcm->lcl_to_rmt_adjacencies;
530 hash_set (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index, rmts_idx);
534 rmts_idx = (u32) (*rmts_stored_idxp);
535 rmts = pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idx);
537 vec_add1 (rmts[0], dst_map_index);
544 } fwd_entry_mt_arg_t;
547 dp_add_fwd_entry_thread_fn (void *arg)
549 fwd_entry_mt_arg_t *a = arg;
550 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
551 dp_add_fwd_entry (lcm, a->si, a->di);
556 dp_add_fwd_entry_from_mt (u32 si, u32 di)
558 fwd_entry_mt_arg_t a;
560 clib_memset (&a, 0, sizeof (a));
564 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
565 (u8 *) & a, sizeof (a));
570 * Returns vector of adjacencies.
572 * The caller must free the vector returned by this function.
574 * @param vni virtual network identifier
575 * @return vector of adjacencies
578 vnet_lisp_adjacencies_get_by_vni (u32 vni)
580 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
582 lisp_adjacency_t *adjs = 0, adj;
585 pool_foreach (fwd, lcm->fwd_entry_pool)
587 if (gid_address_vni (&fwd->reid) != vni)
590 gid_address_copy (&adj.reid, &fwd->reid);
591 gid_address_copy (&adj.leid, &fwd->leid);
592 vec_add1 (adjs, adj);
600 get_map_server (ip_address_t * a)
602 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
605 vec_foreach (m, lcm->map_servers)
607 if (!ip_address_cmp (&m->address, a))
616 get_map_resolver (ip_address_t * a)
618 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
621 vec_foreach (m, lcm->map_resolvers)
623 if (!ip_address_cmp (&m->address, a))
632 vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
635 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
636 lisp_msmr_t _ms, *ms = &_ms;
638 if (vnet_lisp_enable_disable_status () == 0)
640 clib_warning ("LISP is disabled!");
641 return VNET_API_ERROR_LISP_DISABLED;
646 if (get_map_server (addr))
648 clib_warning ("map-server %U already exists!", format_ip_address,
653 clib_memset (ms, 0, sizeof (*ms));
654 ip_address_copy (&ms->address, addr);
655 vec_add1 (lcm->map_servers, ms[0]);
657 if (vec_len (lcm->map_servers) == 1)
658 lcm->do_map_server_election = 1;
662 for (i = 0; i < vec_len (lcm->map_servers); i++)
664 ms = vec_elt_at_index (lcm->map_servers, i);
665 if (!ip_address_cmp (&ms->address, addr))
667 if (!ip_address_cmp (&ms->address, &lcm->active_map_server))
668 lcm->do_map_server_election = 1;
670 vec_del1 (lcm->map_servers, i);
680 * Add/remove mapping to/from map-cache. Overwriting not allowed.
683 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
684 u32 * map_index_result)
686 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
687 u32 mi, *map_indexp, map_index, i;
688 u32 **rmts = 0, *remote_idxp, rmts_itr, remote_idx;
690 mapping_t *m, *old_map;
693 if (gid_address_type (&a->eid) == GID_ADDR_NSH)
695 if (gid_address_vni (&a->eid) != 0)
697 clib_warning ("Supported only default VNI for NSH!");
698 return VNET_API_ERROR_INVALID_ARGUMENT;
700 if (gid_address_nsh_spi (&a->eid) > MAX_VALUE_U24)
702 clib_warning ("SPI is greater than 24bit!");
703 return VNET_API_ERROR_INVALID_ARGUMENT;
707 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
708 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
711 /* TODO check if overwriting and take appropriate actions */
712 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
714 clib_warning ("eid %U found in the eid-table", format_gid_address,
716 return VNET_API_ERROR_VALUE_EXIST;
719 pool_get (lcm->mapping_pool, m);
720 gid_address_copy (&m->eid, &a->eid);
721 m->locator_set_index = a->locator_set_index;
723 m->action = a->action;
725 m->is_static = a->is_static;
726 m->key = vec_dup (a->key);
727 m->key_id = a->key_id;
728 m->authoritative = a->authoritative;
730 map_index = m - lcm->mapping_pool;
731 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
734 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
736 clib_warning ("Locator set with index %d doesn't exist",
737 a->locator_set_index);
738 return VNET_API_ERROR_INVALID_VALUE;
741 /* add eid to list of eids supported by locator-set */
742 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
743 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
744 a->locator_set_index);
745 vec_add1 (eid_indexes[0], map_index);
750 vec_add1 (lcm->local_mappings_indexes, map_index);
752 map_index_result[0] = map_index;
756 if (mi == GID_LOOKUP_MISS)
758 clib_warning ("eid %U not found in the eid-table",
759 format_gid_address, &a->eid);
760 return VNET_API_ERROR_INVALID_VALUE;
763 /* clear locator-set to eids binding */
764 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
765 a->locator_set_index);
766 for (i = 0; i < vec_len (eid_indexes[0]); i++)
768 map_indexp = vec_elt_at_index (eid_indexes[0], i);
769 if (map_indexp[0] == mi)
772 vec_del1 (eid_indexes[0], i);
774 /* remove local mark if needed */
775 m = pool_elt_at_index (lcm->mapping_pool, mi);
778 /* Remove adjacencies associated with the local mapping */
779 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
783 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
784 vec_foreach (remote_idxp, rmts[0])
786 dp_del_fwd_entry (lcm, remote_idxp[0]);
789 pool_put (lcm->lcl_to_rmt_adjacencies, rmts);
790 hash_unset (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
794 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
796 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
797 if (lm_indexp[0] == mi)
800 vec_del1 (lcm->local_mappings_indexes, k);
804 /* Remove remote (if present) from the vectors of lcl-to-rmts
805 * TODO: Address this in a more efficient way.
808 pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies)
810 vec_foreach_index (rmts_itr, rmts[0])
812 remote_idx = vec_elt (rmts[0], rmts_itr);
813 if (mi == remote_idx)
815 vec_del1 (rmts[0], rmts_itr);
823 /* remove mapping from dictionary */
824 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
825 gid_address_free (&m->eid);
826 pool_put_index (lcm->mapping_pool, mi);
833 * Add/update/delete mapping to/in/from map-cache.
836 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
837 u32 * map_index_result)
843 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
845 if (vnet_lisp_enable_disable_status () == 0)
847 clib_warning ("LISP is disabled!");
848 return VNET_API_ERROR_LISP_DISABLED;
851 vni = gid_address_vni (&a->eid);
852 type = gid_address_type (&a->eid);
853 if (GID_ADDR_IP_PREFIX == type)
854 dp_table = hash_get (lcm->table_id_by_vni, vni);
855 else if (GID_ADDR_MAC == type)
856 dp_table = hash_get (lcm->bd_id_by_vni, vni);
858 if (!dp_table && GID_ADDR_NSH != type)
860 clib_warning ("vni %d not associated to a %s!", vni,
861 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
862 return VNET_API_ERROR_INVALID_VALUE;
865 /* store/remove mapping from map-cache */
866 return vnet_lisp_map_cache_add_del (a, map_index_result);
870 add_l2_arp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
873 u32 version = (u32) kvp->key[0];
874 if (AF_IP6 == version)
875 return (BIHASH_WALK_CONTINUE);
877 u32 bd = (u32) (kvp->key[0] >> 32);
878 hash_set (ht[0], bd, 0);
879 return (BIHASH_WALK_CONTINUE);
883 vnet_lisp_l2_arp_bds_get (void)
885 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
888 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
889 add_l2_arp_bd, &bds);
894 add_ndp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
897 u32 version = (u32) kvp->key[0];
898 if (AF_IP4 == version)
899 return (BIHASH_WALK_CONTINUE);
901 u32 bd = (u32) (kvp->key[0] >> 32);
902 hash_set (ht[0], bd, 0);
903 return (BIHASH_WALK_CONTINUE);
907 vnet_lisp_ndp_bds_get (void)
909 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
912 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
921 } lisp_add_l2_arp_ndp_args_t;
924 add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
926 lisp_add_l2_arp_ndp_args_t *a = arg;
927 lisp_api_l2_arp_entry_t **vector = a->vector, e;
929 u32 version = (u32) kvp->key[0];
930 if (AF_IP6 == version)
931 return (BIHASH_WALK_CONTINUE);
933 u32 bd = (u32) (kvp->key[0] >> 32);
937 mac_copy (e.mac, (void *) &kvp->value);
938 e.ip4 = (u32) kvp->key[1];
939 vec_add1 (vector[0], e);
941 return (BIHASH_WALK_CONTINUE);
944 lisp_api_l2_arp_entry_t *
945 vnet_lisp_l2_arp_entries_get_by_bd (u32 bd)
947 lisp_api_l2_arp_entry_t *entries = 0;
948 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
949 lisp_add_l2_arp_ndp_args_t a;
954 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
955 add_l2_arp_entry, &a);
960 add_ndp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
962 lisp_add_l2_arp_ndp_args_t *a = arg;
963 lisp_api_ndp_entry_t **vector = a->vector, e;
965 u32 version = (u32) kvp->key[0];
966 if (AF_IP4 == version)
967 return (BIHASH_WALK_CONTINUE);
969 u32 bd = (u32) (kvp->key[0] >> 32);
973 mac_copy (e.mac, (void *) &kvp->value);
974 clib_memcpy (e.ip6, &kvp->key[1], 16);
975 vec_add1 (vector[0], e);
977 return (BIHASH_WALK_CONTINUE);
980 lisp_api_ndp_entry_t *
981 vnet_lisp_ndp_entries_get_by_bd (u32 bd)
983 lisp_api_ndp_entry_t *entries = 0;
984 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
985 lisp_add_l2_arp_ndp_args_t a;
990 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
996 vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac, u8 is_add)
998 if (vnet_lisp_enable_disable_status () == 0)
1000 clib_warning ("LISP is disabled!");
1001 return VNET_API_ERROR_LISP_DISABLED;
1004 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1007 u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key);
1010 if (res != GID_LOOKUP_MISS_L2)
1012 clib_warning ("Entry %U exists in DB!", format_gid_address, key);
1013 return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
1015 u64 val = mac_to_u64 (mac);
1016 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val,
1021 if (res == GID_LOOKUP_MISS_L2)
1023 clib_warning ("ONE entry %U not found - cannot delete!",
1024 format_gid_address, key);
1027 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0,
1035 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
1037 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1038 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
1040 if (vnet_lisp_enable_disable_status () == 0)
1042 clib_warning ("LISP is disabled!");
1043 return VNET_API_ERROR_LISP_DISABLED;
1046 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
1047 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
1049 if (!is_l2 && (vni == 0 || dp_id == 0))
1051 clib_warning ("can't add/del default vni-vrf mapping!");
1055 dp_idp = hash_get (dp_table_by_vni[0], vni);
1056 vnip = hash_get (vni_by_dp_table[0], dp_id);
1062 clib_warning ("vni %d or vrf %d already used in vrf/vni "
1063 "mapping!", vni, dp_id);
1066 hash_set (dp_table_by_vni[0], vni, dp_id);
1067 hash_set (vni_by_dp_table[0], dp_id, vni);
1069 /* create dp iface */
1070 dp_add_del_iface (lcm, vni, is_l2, 1 /* is_add */ ,
1071 1 /* with_default_route */ );
1075 if (!dp_idp || !vnip)
1077 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
1078 "mapping!", vni, dp_id);
1081 /* remove dp iface */
1082 dp_add_del_iface (lcm, vni, is_l2, 0 /* is_add */ , 0 /* unused */ );
1084 hash_unset (dp_table_by_vni[0], vni);
1085 hash_unset (vni_by_dp_table[0], dp_id);
1091 /* return 0 if the two locator sets are identical 1 otherwise */
1093 compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
1094 locator_t * new_locators)
1097 locator_t *old_loc, *new_loc;
1099 if (vec_len (old_ls_indexes) != vec_len (new_locators))
1102 for (i = 0; i < vec_len (new_locators); i++)
1104 old_li = vec_elt (old_ls_indexes, i);
1105 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
1107 new_loc = vec_elt_at_index (new_locators, i);
1109 if (locator_cmp (old_loc, new_loc))
1119 gid_address_t *eids_to_be_deleted;
1120 } remove_mapping_args_t;
1123 * Callback invoked when a sub-prefix is found
1126 remove_mapping_if_needed (u32 mi, void *arg)
1129 remove_mapping_args_t *a = arg;
1130 lisp_cp_main_t *lcm = a->lcm;
1134 m = pool_elt_at_index (lcm->mapping_pool, mi);
1135 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
1139 if (0 != vec_len (ls->locator_indices))
1144 if (0 == vec_len (ls->locator_indices))
1149 vec_add1 (a->eids_to_be_deleted, m->eid);
1153 * This function searches map cache and looks for IP prefixes that are subset
1154 * of the provided one. If such prefix is found depending on 'is_negative'
1157 * 1) if is_negative is true and found prefix points to positive mapping,
1158 * then the mapping is removed
1159 * 2) if is_negative is false and found prefix points to negative mapping,
1160 * then the mapping is removed
1163 remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
1167 remove_mapping_args_t a;
1169 clib_memset (&a, 0, sizeof (a));
1171 /* do this only in src/dst mode ... */
1172 if (MR_MODE_SRC_DST != lcm->map_request_mode)
1175 /* ... and only for IP prefix */
1176 if (GID_ADDR_SRC_DST != gid_address_type (eid)
1177 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
1180 a.is_negative = is_negative;
1183 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
1184 remove_mapping_if_needed, &a);
1186 vec_foreach (e, a.eids_to_be_deleted)
1188 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
1190 clib_memset (adj_args, 0, sizeof (adj_args[0]));
1191 gid_address_copy (&adj_args->reid, e);
1192 adj_args->is_add = 0;
1193 if (vnet_lisp_add_del_adjacency (adj_args))
1194 clib_warning ("failed to del adjacency!");
1196 vnet_lisp_del_mapping (e, NULL);
1199 vec_free (a.eids_to_be_deleted);
1203 is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
1205 fib_node_index_t fei;
1206 fib_prefix_t prefix;
1207 fib_entry_flag_t flags;
1209 ip_address_to_fib_prefix (addr, &prefix);
1211 fei = fib_table_lookup (0, &prefix);
1212 flags = fib_entry_get_flags (fei);
1213 return (FIB_ENTRY_FLAG_LOCAL & flags);
1217 * Adds/updates mapping. Does not program forwarding.
1219 * @param a parameters of the new mapping
1220 * @param rlocs vector of remote locators
1221 * @param res_map_index index of the newly created mapping
1222 * @param locators_changed indicator if locators were updated in the mapping
1223 * @return return code
1226 vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
1228 u32 * res_map_index, u8 * is_updated)
1230 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1231 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1232 u32 mi, ls_index = 0, dst_map_index;
1236 if (vnet_lisp_enable_disable_status () == 0)
1238 clib_warning ("LISP is disabled!");
1239 return VNET_API_ERROR_LISP_DISABLED;
1243 res_map_index[0] = ~0;
1247 clib_memset (ls_args, 0, sizeof (ls_args[0]));
1249 ls_args->locators = rlocs;
1250 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
1251 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1253 /* check if none of the locators match locally configured address */
1254 vec_foreach (loc, rlocs)
1256 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1257 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1259 clib_warning ("RLOC %U matches a local address!",
1260 format_gid_address, &loc->address);
1261 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1265 /* overwrite: if mapping already exists, decide if locators should be
1266 * updated and be done */
1267 if (old_map && gid_address_cmp (&old_map->eid, &a->eid) == 0)
1269 if (!a->is_static && (old_map->is_static || old_map->local))
1271 /* do not overwrite local or static remote mappings */
1272 clib_warning ("mapping %U rejected due to collision with local "
1273 "or static remote mapping!", format_gid_address,
1278 locator_set_t *old_ls;
1280 /* update mapping attributes */
1281 old_map->action = a->action;
1282 if (old_map->action != a->action && NULL != is_updated)
1285 old_map->authoritative = a->authoritative;
1286 old_map->ttl = a->ttl;
1288 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1289 old_map->locator_set_index);
1290 if (compare_locators (lcm, old_ls->locator_indices, ls_args->locators))
1292 /* set locator-set index to overwrite */
1293 ls_args->is_add = 1;
1294 ls_args->index = old_map->locator_set_index;
1295 vnet_lisp_add_del_locator_set (ls_args, 0);
1300 res_map_index[0] = mi;
1307 remove_overlapping_sub_prefixes (lcm, &a->eid, 0 == ls_args->locators);
1309 ls_args->is_add = 1;
1310 ls_args->index = ~0;
1312 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1316 a->locator_set_index = ls_index;
1317 vnet_lisp_map_cache_add_del (a, &dst_map_index);
1320 res_map_index[0] = dst_map_index;
1328 * Removes a mapping. Does not program forwarding.
1330 * @param eid end-host identifier
1331 * @param res_map_index index of the removed mapping
1332 * @return return code
1335 vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index)
1337 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1338 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1339 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1343 clib_memset (ls_args, 0, sizeof (ls_args[0]));
1344 clib_memset (m_args, 0, sizeof (m_args[0]));
1346 res_map_index[0] = ~0;
1348 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1349 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1351 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1353 clib_warning ("cannot delete mapping for eid %U",
1354 format_gid_address, eid);
1359 gid_address_copy (&m_args->eid, eid);
1360 m_args->locator_set_index = old_map->locator_set_index;
1362 ls_args->is_add = 0;
1363 ls_args->index = old_map->locator_set_index;
1365 /* delete timer associated to the mapping if any */
1366 if (old_map->timer_set)
1367 TW (tw_timer_stop) (&lcm->wheel, old_map->timer_handle);
1369 /* delete locator set */
1370 vnet_lisp_add_del_locator_set (ls_args, 0);
1372 /* delete mapping associated from map-cache */
1373 vnet_lisp_map_cache_add_del (m_args, 0);
1375 /* return old mapping index */
1377 res_map_index[0] = mi;
1384 vnet_lisp_clear_all_remote_adjacencies (void)
1387 u32 mi, *map_indices = 0, *map_indexp;
1388 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1389 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1390 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1393 pool_foreach_index (mi, lcm->mapping_pool)
1395 vec_add1 (map_indices, mi);
1399 vec_foreach (map_indexp, map_indices)
1401 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1404 dp_del_fwd_entry (lcm, map_indexp[0]);
1406 dm_args->is_add = 0;
1407 gid_address_copy (&dm_args->eid, &map->eid);
1408 dm_args->locator_set_index = map->locator_set_index;
1410 /* delete mapping associated to fwd entry */
1411 vnet_lisp_map_cache_add_del (dm_args, 0);
1415 ls->index = map->locator_set_index;
1416 /* delete locator set */
1417 rv = vnet_lisp_add_del_locator_set (ls, 0);
1425 vec_free (map_indices);
1430 * Adds adjacency or removes forwarding entry associated to remote mapping.
1431 * Note that adjacencies are not stored, they only result in forwarding entries
1435 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1437 lisp_cp_main_t *lcm = &lisp_control_main;
1438 u32 local_mi, remote_mi = ~0;
1440 if (vnet_lisp_enable_disable_status () == 0)
1442 clib_warning ("LISP is disabled!");
1443 return VNET_API_ERROR_LISP_DISABLED;
1446 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1447 &a->reid, &a->leid);
1448 if (GID_LOOKUP_MISS == remote_mi)
1450 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1451 format_gid_address, &a->reid);
1458 /* check if source eid has an associated mapping. If pitr mode is on,
1459 * just use the pitr's mapping */
1460 if (lcm->flags & LISP_FLAG_PITR_MODE)
1462 if (lcm->pitr_map_index != ~0)
1464 local_mi = lcm->pitr_map_index;
1468 /* PITR mode is on, but no mapping is configured */
1474 if (gid_address_type (&a->reid) == GID_ADDR_NSH)
1476 if (lcm->nsh_map_index == ~0)
1477 local_mi = GID_LOOKUP_MISS;
1479 local_mi = lcm->nsh_map_index;
1483 local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1488 if (GID_LOOKUP_MISS == local_mi)
1490 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1491 format_gid_address, &a->leid);
1496 /* update forwarding */
1497 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1500 dp_del_fwd_entry (lcm, remote_mi);
1506 vnet_lisp_set_map_request_mode (u8 mode)
1508 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1510 if (vnet_lisp_enable_disable_status () == 0)
1512 clib_warning ("LISP is disabled!");
1513 return VNET_API_ERROR_LISP_DISABLED;
1516 if (mode >= _MR_MODE_MAX)
1518 clib_warning ("Invalid LISP map request mode %d!", mode);
1519 return VNET_API_ERROR_INVALID_ARGUMENT;
1522 lcm->map_request_mode = mode;
1527 vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
1529 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1530 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
1531 u32 locator_set_index = ~0;
1535 if (vnet_lisp_enable_disable_status () == 0)
1537 clib_warning ("LISP is disabled!");
1538 return VNET_API_ERROR_LISP_DISABLED;
1543 if (lcm->nsh_map_index == (u32) ~ 0)
1545 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1548 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1551 locator_set_index = p[0];
1553 pool_get (lcm->mapping_pool, m);
1554 clib_memset (m, 0, sizeof *m);
1555 m->locator_set_index = locator_set_index;
1558 lcm->nsh_map_index = m - lcm->mapping_pool;
1560 if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
1566 if (lcm->nsh_map_index != (u32) ~ 0)
1568 /* remove NSH mapping */
1569 pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
1570 lcm->nsh_map_index = ~0;
1571 vnet_lisp_gpe_del_nsh_iface (lgm);
1578 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1580 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1581 u32 locator_set_index = ~0;
1585 if (vnet_lisp_enable_disable_status () == 0)
1587 clib_warning ("LISP is disabled!");
1588 return VNET_API_ERROR_LISP_DISABLED;
1591 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1594 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1597 locator_set_index = p[0];
1601 pool_get (lcm->mapping_pool, m);
1602 m->locator_set_index = locator_set_index;
1605 lcm->pitr_map_index = m - lcm->mapping_pool;
1609 /* remove pitr mapping */
1610 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1611 lcm->pitr_map_index = ~0;
1617 vnet_lisp_map_register_fallback_threshold_set (u32 value)
1619 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1622 return VNET_API_ERROR_INVALID_ARGUMENT;
1625 lcm->max_expired_map_registers = value;
1630 vnet_lisp_map_register_fallback_threshold_get (void)
1632 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1633 return lcm->max_expired_map_registers;
1637 * Configure Proxy-ETR
1639 * @param ip PETR's IP address
1640 * @param is_add Flag that indicates if this is an addition or removal
1642 * return 0 on success
1645 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1647 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1650 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1653 if (vnet_lisp_enable_disable_status () == 0)
1655 clib_warning ("LISP is disabled!");
1656 return VNET_API_ERROR_LISP_DISABLED;
1659 clib_memset (ls_args, 0, sizeof (*ls_args));
1663 /* Create placeholder petr locator-set */
1664 clib_memset (&loc, 0, sizeof (loc));
1665 gid_address_from_ip (&loc.address, ip);
1667 loc.state = loc.weight = 1;
1670 ls_args->is_add = 1;
1671 ls_args->index = ~0;
1672 vec_add1 (ls_args->locators, loc);
1673 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1675 /* Add petr mapping */
1676 pool_get (lcm->mapping_pool, m);
1677 m->locator_set_index = ls_index;
1678 lcm->petr_map_index = m - lcm->mapping_pool;
1680 /* Enable use-petr */
1681 lcm->flags |= LISP_FLAG_USE_PETR;
1685 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1687 /* Remove petr locator */
1688 ls_args->is_add = 0;
1689 ls_args->index = m->locator_set_index;
1690 vnet_lisp_add_del_locator_set (ls_args, 0);
1692 /* Remove petr mapping */
1693 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1695 /* Disable use-petr */
1696 lcm->flags &= ~LISP_FLAG_USE_PETR;
1697 lcm->petr_map_index = ~0;
1702 /* cleans locator to locator-set data and removes locators not part of
1703 * any locator-set */
1705 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1707 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1708 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1709 for (i = 0; i < vec_len (ls->locator_indices); i++)
1711 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1712 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1714 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1716 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1717 if (ls_indexp[0] == lsi)
1721 /* delete index for removed locator-set */
1722 vec_del1 (ls_indexes[0], j);
1724 /* delete locator if it's part of no locator-set */
1725 if (vec_len (ls_indexes[0]) == 0)
1727 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1728 vec_add1 (to_be_deleted, i);
1734 for (i = 0; i < vec_len (to_be_deleted); i++)
1736 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1737 vec_del1 (ls->locator_indices, loc_indexp[0]);
1739 vec_free (to_be_deleted);
1743 static inline uword *
1744 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1746 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1751 /* find locator-set */
1755 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1766 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1772 ASSERT (ls != NULL);
1773 ASSERT (loc != NULL);
1775 vec_foreach (locit, ls->locator_indices)
1777 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1778 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1779 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1781 clib_warning ("Duplicate locator");
1782 return VNET_API_ERROR_VALUE_EXIST;
1790 update_adjacencies_by_map_index (lisp_cp_main_t * lcm,
1791 u32 mapping_index, u8 remove_only)
1795 uword *fei = 0, *rmts_idxp = 0;
1796 u32 **rmts = 0, *remote_idxp = 0, *rmts_copy = 0;
1797 vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
1798 clib_memset (a, 0, sizeof (*a));
1800 map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
1804 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mapping_index);
1808 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
1809 rmts_copy = vec_dup (rmts[0]);
1811 vec_foreach (remote_idxp, rmts_copy)
1813 fei = hash_get (lcm->fwd_entry_by_mapping_index, remote_idxp[0]);
1817 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1819 gid_address_copy (&a->leid, &fwd->leid);
1820 gid_address_copy (&a->reid, &fwd->reid);
1821 vnet_lisp_add_del_adjacency (a);
1826 vnet_lisp_add_del_adjacency (a);
1829 vec_free (rmts_copy);
1834 fei = hash_get (lcm->fwd_entry_by_mapping_index, mapping_index);
1838 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1840 gid_address_copy (&a->leid, &fwd->leid);
1841 gid_address_copy (&a->reid, &fwd->reid);
1842 vnet_lisp_add_del_adjacency (a);
1847 vnet_lisp_add_del_adjacency (a);
1853 update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm,
1854 u32 ls_index, u8 remove_only)
1859 if (vec_len (lcm->locator_set_to_eids) <= ls_index)
1862 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
1864 for (i = 0; i < vec_len (eid_indexes[0]); i++)
1866 map_indexp = vec_elt_at_index (eid_indexes[0], i);
1867 update_adjacencies_by_map_index (lcm, map_indexp[0], remove_only);
1872 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1873 u32 ls_index, u32 loc_id)
1875 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1876 u32 **ls_indexes = NULL;
1878 ASSERT (ls != NULL);
1879 ASSERT (locit != NULL);
1881 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1882 pool_put_index (lcm->locator_pool, locit[0]);
1883 vec_del1 (ls->locator_indices, loc_id);
1884 vec_del1 (ls_indexes[0], ls_index);
1888 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1889 locator_set_t * ls, u32 * ls_result)
1891 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1892 locator_t *loc = NULL, *itloc = NULL;
1893 uword _p = (u32) ~ 0, *p = &_p;
1894 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1900 if (vnet_lisp_enable_disable_status () == 0)
1902 clib_warning ("LISP is disabled!");
1903 return VNET_API_ERROR_LISP_DISABLED;
1906 p = get_locator_set_index (a, p);
1909 clib_warning ("locator-set %v doesn't exist", a->name);
1910 return VNET_API_ERROR_INVALID_ARGUMENT;
1915 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1918 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1920 return VNET_API_ERROR_INVALID_ARGUMENT;
1927 ls_result[0] = p[0];
1929 /* allocate locators */
1930 vec_foreach (itloc, a->locators)
1932 ret = is_locator_in_locator_set (lcm, ls, itloc);
1938 pool_get (lcm->locator_pool, loc);
1940 loc_index = loc - lcm->locator_pool;
1942 vec_add1 (ls->locator_indices, loc_index);
1944 vec_validate (lcm->locator_to_locator_sets, loc_index);
1945 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1947 vec_add1 (ls_indexes[0], p[0]);
1955 vec_foreach (itloc, a->locators)
1959 vec_foreach (locit, ls->locator_indices)
1961 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1963 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1966 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1968 else if (0 == loc->local &&
1969 !gid_address_cmp (&loc->address, &itloc->address))
1972 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1977 /* update fwd entries using this locator in DP */
1978 update_fwd_entries_by_locator_set (lcm, ls_index,
1979 vec_len (ls->locator_indices)
1992 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
1995 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1997 uword _p = (u32) ~ 0, *p = &_p;
2002 if (vnet_lisp_enable_disable_status () == 0)
2004 clib_warning ("LISP is disabled!");
2005 return VNET_API_ERROR_LISP_DISABLED;
2010 p = get_locator_set_index (a, p);
2013 if (p && p[0] != (u32) ~ 0)
2015 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2018 clib_warning ("locator-set %d to be overwritten doesn't exist!",
2023 /* clean locator to locator-set vectors and remove locators if
2024 * they're not part of another locator-set */
2025 clean_locator_to_locator_set (lcm, p[0]);
2027 /* remove locator indices from locator set */
2028 vec_free (ls->locator_indices);
2033 ls_result[0] = p[0];
2035 /* new locator-set */
2038 pool_get (lcm->locator_set_pool, ls);
2039 clib_memset (ls, 0, sizeof (*ls));
2040 ls_index = ls - lcm->locator_set_pool;
2044 ls->name = vec_dup (a->name);
2046 if (!lcm->locator_set_index_by_name)
2047 lcm->locator_set_index_by_name =
2048 hash_create_vec ( /* size */ 0, sizeof (ls->name[0]),
2050 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
2053 /* mark as local locator-set */
2054 vec_add1 (lcm->local_locator_set_indexes, ls_index);
2056 ls->local = a->local;
2058 ls_result[0] = ls_index;
2061 ret = vnet_lisp_add_del_locator (a, ls, NULL);
2069 p = get_locator_set_index (a, p);
2072 clib_warning ("locator-set %v doesn't exists", a->name);
2076 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2079 clib_warning ("locator-set with index %d doesn't exists", p[0]);
2083 if (lcm->mreq_itr_rlocs == p[0])
2085 clib_warning ("Can't delete the locator-set used to constrain "
2086 "the itr-rlocs in map-requests!");
2090 if (vec_len (lcm->locator_set_to_eids) != 0)
2092 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
2093 if (vec_len (eid_indexes[0]) != 0)
2096 ("Can't delete a locator that supports a mapping!");
2101 /* clean locator to locator-sets data */
2102 clean_locator_to_locator_set (lcm, p[0]);
2108 vec_foreach_index (it, lcm->local_locator_set_indexes)
2110 lsi = vec_elt (lcm->local_locator_set_indexes, it);
2113 vec_del1 (lcm->local_locator_set_indexes, it);
2117 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
2119 vec_free (ls->name);
2120 vec_free (ls->locator_indices);
2121 pool_put (lcm->locator_set_pool, ls);
2127 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
2129 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2131 lcm->rloc_probing = is_enable;
2136 vnet_lisp_map_register_enable_disable (u8 is_enable)
2138 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2140 lcm->map_registering = is_enable;
2145 lisp_cp_register_dst_port (vlib_main_t * vm)
2147 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
2148 lisp_cp_input_node.index, 1 /* is_ip4 */ );
2149 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
2150 lisp_cp_input_node.index, 0 /* is_ip4 */ );
2154 lisp_cp_unregister_dst_port (vlib_main_t * vm)
2156 udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp, 0 /* is_ip4 */ );
2157 udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp6, 1 /* is_ip4 */ );
2161 * lisp_cp_enable_l2_l3_ifaces
2163 * Enable all l2 and l3 ifaces
2166 lisp_cp_enable_l2_l3_ifaces (lisp_cp_main_t * lcm, u8 with_default_route)
2171 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
2172 dp_add_del_iface(lcm, vni, /* is_l2 */ 0, /* is_add */1,
2173 with_default_route);
2175 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
2176 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1,
2177 with_default_route);
2183 lisp_cp_disable_l2_l3_ifaces (lisp_cp_main_t * lcm)
2187 /* clear interface table */
2188 hash_free (lcm->fwd_entry_by_mapping_index);
2189 pool_free (lcm->fwd_entry_pool);
2190 /* Clear state tracking rmt-lcl fwd entries */
2192 pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies)
2197 hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
2198 pool_free (lcm->lcl_to_rmt_adjacencies);
2202 vnet_lisp_enable_disable (u8 is_enable)
2204 clib_error_t *error = 0;
2205 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2206 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
2208 a->is_en = is_enable;
2209 error = vnet_lisp_gpe_enable_disable (a);
2212 return clib_error_return (0, "failed to %s data-plane!",
2213 a->is_en ? "enable" : "disable");
2216 /* decide what to do based on mode */
2218 if (lcm->flags & LISP_FLAG_XTR_MODE)
2222 lisp_cp_register_dst_port (lcm->vlib_main);
2223 lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
2227 lisp_cp_unregister_dst_port (lcm->vlib_main);
2228 lisp_cp_disable_l2_l3_ifaces (lcm);
2232 if (lcm->flags & LISP_FLAG_PETR_MODE)
2234 /* if in xTR mode, the LISP ports were already (un)registered above */
2235 if (!(lcm->flags & LISP_FLAG_XTR_MODE))
2238 lisp_cp_register_dst_port (lcm->vlib_main);
2240 lisp_cp_unregister_dst_port (lcm->vlib_main);
2244 if (lcm->flags & LISP_FLAG_PITR_MODE)
2248 /* install interfaces, but no default routes */
2249 lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
2253 lisp_cp_disable_l2_l3_ifaces (lcm);
2258 vnet_lisp_create_retry_process (lcm);
2260 /* update global flag */
2261 lcm->is_enabled = is_enable;
2267 vnet_lisp_enable_disable_status (void)
2269 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2270 return lcm->is_enabled;
2274 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
2276 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2278 lisp_msmr_t _mr, *mr = &_mr;
2280 if (vnet_lisp_enable_disable_status () == 0)
2282 clib_warning ("LISP is disabled!");
2283 return VNET_API_ERROR_LISP_DISABLED;
2289 if (get_map_resolver (&a->address))
2291 clib_warning ("map-resolver %U already exists!", format_ip_address,
2296 clib_memset (mr, 0, sizeof (*mr));
2297 ip_address_copy (&mr->address, &a->address);
2298 vec_add1 (lcm->map_resolvers, *mr);
2300 if (vec_len (lcm->map_resolvers) == 1)
2301 lcm->do_map_resolver_election = 1;
2305 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
2307 mr = vec_elt_at_index (lcm->map_resolvers, i);
2308 if (!ip_address_cmp (&mr->address, &a->address))
2310 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
2311 lcm->do_map_resolver_election = 1;
2313 vec_del1 (lcm->map_resolvers, i);
2322 vnet_lisp_map_register_set_ttl (u32 ttl)
2324 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2325 lcm->map_register_ttl = ttl;
2330 vnet_lisp_map_register_get_ttl (void)
2332 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2333 return lcm->map_register_ttl;
2337 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
2339 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2342 if (vnet_lisp_enable_disable_status () == 0)
2344 clib_warning ("LISP is disabled!");
2345 return VNET_API_ERROR_LISP_DISABLED;
2350 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
2353 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
2354 return VNET_API_ERROR_INVALID_ARGUMENT;
2357 lcm->mreq_itr_rlocs = p[0];
2361 lcm->mreq_itr_rlocs = ~0;
2367 /* Statistics (not really errors) */
2368 #define foreach_lisp_cp_lookup_error \
2370 _(MAP_REQUESTS_SENT, "map-request sent") \
2371 _(ARP_REPLY_TX, "ARP replies sent") \
2372 _(NDP_NEIGHBOR_ADVERTISEMENT_TX, \
2373 "neighbor advertisement sent")
2375 static char *lisp_cp_lookup_error_strings[] = {
2376 #define _(sym,string) string,
2377 foreach_lisp_cp_lookup_error
2383 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
2384 foreach_lisp_cp_lookup_error
2386 LISP_CP_LOOKUP_N_ERROR,
2387 } lisp_cp_lookup_error_t;
2391 LISP_CP_LOOKUP_NEXT_DROP,
2392 LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
2393 LISP_CP_LOOKUP_N_NEXT,
2394 } lisp_cp_lookup_next_t;
2398 gid_address_t dst_eid;
2399 ip_address_t map_resolver_ip;
2400 } lisp_cp_lookup_trace_t;
2403 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
2405 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2406 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2407 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
2409 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
2410 format_ip_address, &t->map_resolver_ip, format_gid_address,
2416 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
2417 ip_address_t * sloc)
2422 if (vec_len (lcm->map_resolvers) == 0)
2424 clib_warning ("No map-resolver configured");
2428 /* find the first mr ip we have a route to and the ip of the
2429 * iface that has a route to it */
2430 vec_foreach (mrit, lcm->map_resolvers)
2433 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
2435 ip_address_copy (mr_ip, a);
2437 /* also update globals */
2442 clib_warning ("Can't find map-resolver and local interface ip!");
2446 static gid_address_t *
2447 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
2453 ip_interface_address_t *ia = 0;
2454 gid_address_t gid_data, *gid = &gid_data;
2455 gid_address_t *rlocs = 0;
2456 ip_prefix_t *ippref = &gid_address_ippref (gid);
2457 ip_address_t *rloc = &ip_prefix_addr (ippref);
2459 clib_memset (gid, 0, sizeof (gid[0]));
2460 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
2461 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
2463 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
2464 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
2466 /* Add ipv4 locators first TODO sort them */
2469 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2470 loc->sw_if_index, 1 /* unnumbered */,
2472 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
2473 ip_address_set (rloc, addr, AF_IP4);
2474 ip_prefix_len (ippref) = 32;
2475 ip_prefix_normalize (ippref);
2476 vec_add1 (rlocs, gid[0]);
2479 /* Add ipv6 locators */
2480 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2481 loc->sw_if_index, 1 /* unnumbered */,
2483 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
2484 ip_address_set (rloc, addr, AF_IP6);
2485 ip_prefix_len (ippref) = 128;
2486 ip_prefix_normalize (ippref);
2487 vec_add1 (rlocs, gid[0]);
2495 static vlib_buffer_t *
2496 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
2497 ip_address_t * sloc, ip_address_t * rloc,
2498 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
2502 vlib_main_t *vm = lcm->vlib_main;
2504 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2506 clib_warning ("Can't allocate buffer for Map-Request!");
2510 b = vlib_get_buffer (vm, bi);
2512 /* leave some space for the encap headers */
2513 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2516 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2517 1 /* rloc probe */ , nonce_res);
2519 /* push outer ip header */
2520 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2528 static vlib_buffer_t *
2529 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2530 gid_address_t * seid, gid_address_t * deid,
2531 locator_set_t * loc_set, ip_address_t * mr_ip,
2532 ip_address_t * sloc, u8 is_smr_invoked,
2533 u64 * nonce_res, u32 * bi_res)
2537 gid_address_t *rlocs = 0;
2538 vlib_main_t *vm = lcm->vlib_main;
2540 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2542 clib_warning ("Can't allocate buffer for Map-Request!");
2546 b = vlib_get_buffer (vm, bi);
2549 /* leave some space for the encap headers */
2550 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2553 rlocs = build_itr_rloc_list (lcm, loc_set);
2555 if (MR_MODE_SRC_DST == lcm->map_request_mode
2556 && GID_ADDR_SRC_DST != gid_address_type (deid))
2559 clib_memset (&sd, 0, sizeof (sd));
2560 build_src_dst (&sd, seid, deid);
2561 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2562 0 /* rloc probe */ , nonce_res);
2567 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2568 0 /* rloc probe */ , nonce_res);
2571 /* push ecm: udp-ip-lisp */
2572 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2574 /* push outer ip header */
2575 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2585 reset_pending_mr_counters (pending_map_request_t * r)
2587 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2591 #define foreach_msmr \
2597 elect_map_ ## name (lisp_cp_main_t * lcm) \
2600 vec_foreach (mr, lcm->map_ ## name ## s) \
2604 ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
2605 lcm->do_map_ ## name ## _election = 0; \
2614 free_map_register_records (mapping_t * maps)
2617 vec_foreach (map, maps) vec_free (map->locators);
2623 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2624 ip_address_t * probed_loc)
2627 locator_t *loc, new;
2628 ip_interface_address_t *ia = 0;
2630 ip_address_t *new_ip = &gid_address_ip (&new.address);
2633 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2635 vec_foreach (li, ls->locator_indices)
2637 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2642 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2643 loc->sw_if_index, 1 /* unnumbered */,
2645 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2647 ip_address_set (new_ip, addr, AF_IP4);
2650 /* Add ipv6 locators */
2651 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2652 loc->sw_if_index, 1 /* unnumbered */,
2654 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2656 ip_address_set (new_ip, addr, AF_IP6);
2660 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2663 vec_add1 (m->locators, new);
2668 build_map_register_record_list (lisp_cp_main_t * lcm)
2670 mapping_t *recs = 0, rec, *m;
2673 pool_foreach (m, lcm->mapping_pool)
2675 /* for now build only local mappings */
2680 add_locators (lcm, &rec, m->locator_set_index, NULL);
2681 vec_add1 (recs, rec);
2688 static vnet_crypto_alg_t
2689 lisp_key_type_to_crypto_alg (lisp_key_type_t key_id)
2694 return VNET_CRYPTO_ALG_HMAC_SHA1;
2695 case HMAC_SHA_256_128:
2696 return VNET_CRYPTO_ALG_HMAC_SHA256;
2698 clib_warning ("unsupported encryption key type: %d!", key_id);
2701 return VNET_CRYPTO_ALG_NONE;
2704 static vnet_crypto_op_id_t
2705 lisp_key_type_to_crypto_op (lisp_key_type_t key_id)
2710 return VNET_CRYPTO_OP_SHA1_HMAC;
2711 case HMAC_SHA_256_128:
2712 return VNET_CRYPTO_OP_SHA256_HMAC;
2714 clib_warning ("unsupported encryption key type: %d!", key_id);
2717 return VNET_CRYPTO_OP_NONE;
2721 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2722 lisp_key_type_t key_id, u8 * key,
2723 u16 auth_data_len, u32 msg_len)
2725 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2726 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2727 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2728 vnet_crypto_op_t _op, *op = &_op;
2729 vnet_crypto_key_index_t ki;
2731 vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id));
2733 op->digest = MREG_DATA (map_reg_hdr);
2734 op->src = (u8 *) map_reg_hdr;
2738 ki = vnet_crypto_key_add (lcm->vlib_main,
2739 lisp_key_type_to_crypto_alg (key_id), key,
2744 vnet_crypto_process_ops (lcm->vlib_main, op, 1);
2745 vnet_crypto_key_del (lcm->vlib_main, ki);
2750 static vlib_buffer_t *
2751 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2752 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2753 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2758 u32 bi, auth_data_len = 0, msg_len = 0;
2759 vlib_main_t *vm = lcm->vlib_main;
2761 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2763 clib_warning ("Can't allocate buffer for Map-Register!");
2767 b = vlib_get_buffer (vm, bi);
2769 /* leave some space for the encap headers */
2770 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2772 auth_data_len = auth_data_len_by_key_id (key_id);
2773 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2774 auth_data_len, nonce_res,
2777 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2780 /* push outer ip header */
2781 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2790 get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
2793 while (lcm->do_map_ ## name ## _election \
2794 | (0 == ip_fib_get_first_egress_ip_for_dst \
2795 (lcm, &lcm->active_map_ ##name, ip))) \
2797 if (0 == elect_map_ ## name (lcm)) \
2798 /* all map resolvers/servers are down */ \
2800 /* restart MR/MS checking by marking all of them up */ \
2801 vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
2810 /* CP output statistics */
2811 #define foreach_lisp_cp_output_error \
2812 _(MAP_REGISTERS_SENT, "map-registers sent") \
2813 _(MAP_REQUESTS_SENT, "map-requests sent") \
2814 _(RLOC_PROBES_SENT, "rloc-probes sent")
2815 static char *lisp_cp_output_error_strings[] = {
2816 #define _(sym,string) string,
2817 foreach_lisp_cp_output_error
2823 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2824 foreach_lisp_cp_output_error
2826 LISP_CP_OUTPUT_N_ERROR,
2827 } lisp_cp_output_error_t;
2830 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2831 vlib_frame_t * from_frame)
2836 /* placeholder node used only for statistics */
2838 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2839 .function = lisp_cp_output,
2840 .name = "lisp-cp-output",
2841 .vector_size = sizeof (u32),
2842 .format_trace = format_lisp_cp_input_trace,
2843 .type = VLIB_NODE_TYPE_INTERNAL,
2845 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2846 .error_strings = lisp_cp_output_error_strings,
2848 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2851 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2857 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2858 u32 local_locator_set_index, ip_address_t * sloc,
2859 ip_address_t * rloc)
2866 u32 next_index, *to_next;
2867 gid_address_t *itr_rlocs;
2869 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2870 itr_rlocs = build_itr_rloc_list (lcm, ls);
2872 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2873 vec_free (itr_rlocs);
2877 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2879 next_index = (ip_addr_version (rloc) == AF_IP4) ?
2880 ip4_lookup_node.index : ip6_lookup_node.index;
2882 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2884 /* Enqueue the packet */
2885 to_next = vlib_frame_vector_args (f);
2888 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2894 send_rloc_probes (lisp_cp_main_t * lcm)
2900 u32 si, rloc_probes_sent = 0;
2903 pool_foreach (e, lcm->fwd_entry_pool)
2905 if (vec_len (e->locator_pairs) == 0)
2908 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2911 clib_warning ("internal error: cannot find local eid %U in "
2912 "map-cache!", format_gid_address, &e->leid);
2915 lm = pool_elt_at_index (lcm->mapping_pool, si);
2917 /* get the best (lowest) priority */
2918 lprio = e->locator_pairs[0].priority;
2920 /* send rloc-probe for pair(s) with the best remote locator priority */
2921 vec_foreach (lp, e->locator_pairs)
2923 if (lp->priority != lprio)
2926 /* get first remote locator */
2927 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2934 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2935 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2941 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2943 pending_map_register_t *pmr;
2944 u32 bi, map_registers_sent = 0;
2949 u32 next_index, *to_next;
2950 mapping_t *records, *r, *group, *k;
2952 if (get_egress_map_server_ip (lcm, &sloc) < 0)
2955 records = build_map_register_record_list (lcm);
2959 vec_foreach (r, records)
2962 u8 key_id = r->key_id;
2965 continue; /* no secret key -> map-register cannot be sent */
2968 vec_add1 (group, r[0]);
2970 /* group mappings that share common key */
2971 for (k = r + 1; k < vec_end (records); k++)
2973 if (k->key_id != r->key_id)
2976 if (vec_is_equal (k->key, r->key))
2978 vec_add1 (group, k[0]);
2979 k->key = 0; /* don't process this mapping again */
2983 b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
2984 want_map_notif, group, key_id, key, &bi);
2989 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2991 next_index = (ip_addr_version (&lcm->active_map_server) == AF_IP4) ?
2992 ip4_lookup_node.index : ip6_lookup_node.index;
2994 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2996 /* Enqueue the packet */
2997 to_next = vlib_frame_vector_args (f);
3000 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3001 map_registers_sent++;
3003 pool_get (lcm->pending_map_registers_pool, pmr);
3004 clib_memset (pmr, 0, sizeof (*pmr));
3005 pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
3006 hash_set (lcm->map_register_messages_by_nonce, nonce,
3007 pmr - lcm->pending_map_registers_pool);
3009 free_map_register_records (records);
3011 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3012 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
3013 map_registers_sent);
3018 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
3019 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
3021 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
3022 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
3025 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
3026 gid_address_t * seid, gid_address_t * deid,
3027 u8 is_smr_invoked, u8 is_resend)
3029 u32 next_index, bi = 0, *to_next, map_index;
3033 locator_set_t *loc_set;
3035 pending_map_request_t *pmr, *duplicate_pmr = 0;
3039 /* if there is already a pending request remember it */
3042 pool_foreach (pmr, lcm->pending_map_requests_pool)
3044 if (!gid_address_cmp (&pmr->src, seid)
3045 && !gid_address_cmp (&pmr->dst, deid))
3047 duplicate_pmr = pmr;
3053 if (!is_resend && duplicate_pmr)
3055 /* don't send the request if there is a pending map request already */
3059 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
3061 /* get locator-set for seid */
3062 if (!pitr_mode && gid_address_type (deid) != GID_ADDR_NSH)
3064 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
3065 if (map_index == ~0)
3067 clib_warning ("No local mapping found in eid-table for %U!",
3068 format_gid_address, seid);
3072 map = pool_elt_at_index (lcm->mapping_pool, map_index);
3077 ("Mapping found for src eid %U is not marked as local!",
3078 format_gid_address, seid);
3081 ls_index = map->locator_set_index;
3087 if (lcm->pitr_map_index != ~0)
3090 pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
3091 ls_index = map->locator_set_index;
3100 if (lcm->nsh_map_index == (u32) ~ 0)
3102 clib_warning ("No locator-set defined for NSH!");
3107 map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
3108 ls_index = map->locator_set_index;
3113 /* overwrite locator set if map-request itr-rlocs configured */
3114 if (~0 != lcm->mreq_itr_rlocs)
3116 ls_index = lcm->mreq_itr_rlocs;
3119 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
3121 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
3124 duplicate_pmr->to_be_removed = 1;
3128 /* build the encapsulated map request */
3129 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
3130 &lcm->active_map_resolver,
3131 &sloc, is_smr_invoked, &nonce, &bi);
3136 /* set fib index to default and lookup node */
3137 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3138 next_index = (ip_addr_version (&lcm->active_map_resolver) == AF_IP4) ?
3139 ip4_lookup_node.index : ip6_lookup_node.index;
3141 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3143 /* Enqueue the packet */
3144 to_next = vlib_frame_vector_args (f);
3147 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3149 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3150 LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1);
3153 /* if there is a pending request already update it */
3155 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
3157 /* remove the oldest nonce */
3158 u64 CLIB_UNUSED (tmp), *nonce_del;
3159 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
3160 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
3161 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
3164 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
3165 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3166 duplicate_pmr - lcm->pending_map_requests_pool);
3170 /* add map-request to pending requests table */
3171 pool_get (lcm->pending_map_requests_pool, pmr);
3172 clib_memset (pmr, 0, sizeof (*pmr));
3173 gid_address_copy (&pmr->src, seid);
3174 gid_address_copy (&pmr->dst, deid);
3175 clib_fifo_add1 (pmr->nonces, nonce);
3176 pmr->is_smr_invoked = is_smr_invoked;
3177 reset_pending_mr_counters (pmr);
3178 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3179 pmr - lcm->pending_map_requests_pool);
3186 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
3188 ip4_header_t *ip4 = hdr;
3191 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
3193 ip_address_set (src, &ip4->src_address, AF_IP4);
3194 ip_address_set (dst, &ip4->dst_address, AF_IP4);
3199 ip_address_set (src, &ip6->src_address, AF_IP6);
3200 ip_address_set (dst, &ip6->dst_address, AF_IP6);
3205 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3209 u32 vni = ~0, table_id = ~0;
3211 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
3219 vnip = hash_get (lcm->vni_by_table_id, table_id);
3223 clib_warning ("vrf %d is not mapped to any vni!", table_id);
3229 lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
3233 l2input_main_t *l2im = &l2input_main;
3234 l2_input_config_t *config;
3235 l2_bridge_domain_t *bd_config;
3237 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
3238 config = vec_elt_at_index (l2im->configs, sw_if_index0);
3239 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
3241 return bd_config->bd_id;
3245 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
3249 u32 bd = lisp_get_bd_from_buffer_eth (b);
3251 vnip = hash_get (lcm->vni_by_bd_id, bd);
3255 clib_warning ("bridge domain %d is not mapped to any vni!", bd);
3261 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3262 gid_address_t * src, gid_address_t * dst,
3265 ethernet_header_t *eh;
3267 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3269 clib_memset (src, 0, sizeof (*src));
3270 clib_memset (dst, 0, sizeof (*dst));
3272 gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
3273 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3275 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
3278 u8 version, preflen;
3280 gid_address_type (src) = GID_ADDR_IP_PREFIX;
3281 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
3283 ip = vlib_buffer_get_current (b);
3284 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
3286 version = gid_address_ip_version (src);
3287 preflen = ip_address_max_len (version);
3288 gid_address_ippref_len (src) = preflen;
3289 gid_address_ippref_len (dst) = preflen;
3291 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
3292 gid_address_vni (dst) = vni;
3293 gid_address_vni (src) = vni;
3295 else if (LISP_AFI_MAC == type)
3297 ethernet_arp_header_t *ah;
3299 eh = vlib_buffer_get_current (b);
3301 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
3303 ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
3304 gid_address_type (dst) = GID_ADDR_ARP;
3306 if (clib_net_to_host_u16 (ah->opcode)
3307 != ETHERNET_ARP_OPCODE_request)
3309 clib_memset (&gid_address_arp_ndp_ip (dst), 0,
3310 sizeof (ip_address_t));
3311 ip_addr_version (&gid_address_arp_ndp_ip (dst)) = AF_IP4;
3312 gid_address_arp_ndp_bd (dst) = ~0;
3316 gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
3317 clib_memcpy (&gid_address_arp_ip4 (dst),
3318 &ah->ip4_over_ethernet[1].ip4, 4);
3322 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
3325 ip = (ip6_header_t *) (eh + 1);
3327 if (IP_PROTOCOL_ICMP6 == ip->protocol)
3329 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3330 ndh = ip6_next_header (ip);
3331 if (ndh->icmp.type == ICMP6_neighbor_solicitation)
3333 gid_address_type (dst) = GID_ADDR_NDP;
3335 /* check that source link layer address option is present */
3336 opt = (void *) (ndh + 1);
3337 if ((opt->header.type !=
3338 ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
3339 || (opt->header.n_data_u64s != 1))
3341 clib_memset (&gid_address_arp_ndp_ip (dst), 0,
3342 sizeof (ip_address_t));
3343 ip_addr_version (&gid_address_arp_ndp_ip (dst)) =
3345 gid_address_arp_ndp_bd (dst) = ~0;
3346 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3350 gid_address_ndp_bd (dst) =
3351 lisp_get_bd_from_buffer_eth (b);
3352 ip_address_set (&gid_address_arp_ndp_ip (dst),
3353 &ndh->target_address, AF_IP6);
3359 gid_address_type (src) = GID_ADDR_MAC;
3360 gid_address_type (dst) = GID_ADDR_MAC;
3361 mac_copy (&gid_address_mac (src), eh->src_address);
3362 mac_copy (&gid_address_mac (dst), eh->dst_address);
3365 vni = lisp_get_vni_from_buffer_eth (lcm, b);
3367 gid_address_vni (dst) = vni;
3368 gid_address_vni (src) = vni;
3371 else if (LISP_AFI_LCAF == type)
3374 eh = vlib_buffer_get_current (b);
3376 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
3378 nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
3379 u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
3380 u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
3381 gid_address_nsh_spi (dst) = spi;
3382 gid_address_nsh_si (dst) = si;
3384 gid_address_type (dst) = GID_ADDR_NSH;
3385 gid_address_type (src) = GID_ADDR_NSH;
3391 lisp_cp_lookup_inline (vlib_main_t * vm,
3392 vlib_node_runtime_t * node,
3393 vlib_frame_t * from_frame, int overlay)
3395 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3396 u32 *from, *to_next, di, si;
3397 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3399 uword n_left_from, n_left_to_next;
3400 vnet_main_t *vnm = vnet_get_main ();
3402 from = vlib_frame_vector_args (from_frame);
3403 n_left_from = from_frame->n_vectors;
3404 next_index = node->cached_next_index;
3406 while (n_left_from > 0)
3408 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
3410 while (n_left_from > 0 && n_left_to_next > 0)
3412 u32 pi0, sw_if_index0, next0;
3415 gid_address_t src, dst;
3416 ethernet_arp_header_t *arp0;
3417 ethernet_header_t *eth0;
3418 vnet_hw_interface_t *hw_if0;
3419 ethernet_header_t *eh0;
3420 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3428 n_left_to_next -= 1;
3430 b0 = vlib_get_buffer (vm, pi0);
3432 /* src/dst eid pair */
3433 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
3435 if (gid_address_type (&dst) == GID_ADDR_ARP)
3437 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3438 if (GID_LOOKUP_MISS_L2 == mac0)
3441 /* send ARP reply */
3442 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3443 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3445 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3447 eth0 = vlib_buffer_get_current (b0);
3448 arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
3450 arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
3451 arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
3452 mac_address_from_u64 (&arp0->ip4_over_ethernet[0].mac, mac0);
3453 clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
3454 &gid_address_arp_ip4 (&dst), 4);
3456 /* Hardware must be ethernet-like. */
3457 ASSERT (vec_len (hw_if0->hw_address) == 6);
3459 clib_memcpy (eth0->dst_address, eth0->src_address, 6);
3460 clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
3462 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
3463 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3466 else if (gid_address_type (&dst) == GID_ADDR_NDP)
3468 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3469 if (GID_LOOKUP_MISS_L2 == mac0)
3472 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3473 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3475 eh0 = vlib_buffer_get_current (b0);
3476 ip0 = (ip6_header_t *) (eh0 + 1);
3477 ndh = ip6_next_header (ip0);
3479 ip0->dst_address = ip0->src_address;
3480 ip0->src_address = ndh->target_address;
3481 ip0->hop_limit = 255;
3482 opt = (void *) (ndh + 1);
3484 ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
3485 clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
3486 ndh->icmp.type = ICMP6_neighbor_advertisement;
3487 ndh->advertisement_flags = clib_host_to_net_u32
3488 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
3489 ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
3490 ndh->icmp.checksum = 0;
3491 ndh->icmp.checksum =
3492 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
3494 clib_memcpy (eh0->dst_address, eh0->src_address, 6);
3495 clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
3498 [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
3499 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3503 /* if we have remote mapping for destination already in map-cache
3504 add forwarding tunnel directly. If not send a map-request */
3505 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
3509 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
3510 /* send a map-request also in case of negative mapping entry
3511 with corresponding action */
3512 if (m->action == LISP_SEND_MAP_REQUEST)
3514 /* send map-request */
3515 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3516 0 /* is_resend */ );
3520 if (GID_ADDR_NSH != gid_address_type (&dst))
3522 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
3526 si = lcm->nsh_map_index;
3530 dp_add_fwd_entry_from_mt (si, di);
3536 /* send map-request */
3537 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3538 0 /* is_resend */ );
3542 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
3543 next0 = LISP_CP_LOOKUP_NEXT_DROP;
3545 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3547 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
3550 clib_memset (tr, 0, sizeof (*tr));
3551 if ((gid_address_type (&dst) == GID_ADDR_NDP) ||
3552 (gid_address_type (&dst) == GID_ADDR_ARP))
3553 clib_memcpy (&tr->dst_eid, &dst, sizeof (gid_address_t));
3555 gid_address_copy (&tr->dst_eid, &dst);
3556 ip_address_copy (&tr->map_resolver_ip,
3557 &lcm->active_map_resolver);
3559 gid_address_free (&dst);
3560 gid_address_free (&src);
3561 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3563 n_left_to_next, pi0, next0);
3566 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
3568 return from_frame->n_vectors;
3572 lisp_cp_lookup_ip4 (vlib_main_t * vm,
3573 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3575 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
3579 lisp_cp_lookup_ip6 (vlib_main_t * vm,
3580 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3582 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
3586 lisp_cp_lookup_l2 (vlib_main_t * vm,
3587 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3589 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
3593 lisp_cp_lookup_nsh (vlib_main_t * vm,
3594 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3596 /* TODO decide if NSH should be propagated as LCAF or not */
3597 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
3601 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
3602 .function = lisp_cp_lookup_ip4,
3603 .name = "lisp-cp-lookup-ip4",
3604 .vector_size = sizeof (u32),
3605 .format_trace = format_lisp_cp_lookup_trace,
3606 .type = VLIB_NODE_TYPE_INTERNAL,
3608 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3609 .error_strings = lisp_cp_lookup_error_strings,
3611 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3614 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3615 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3621 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
3622 .function = lisp_cp_lookup_ip6,
3623 .name = "lisp-cp-lookup-ip6",
3624 .vector_size = sizeof (u32),
3625 .format_trace = format_lisp_cp_lookup_trace,
3626 .type = VLIB_NODE_TYPE_INTERNAL,
3628 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3629 .error_strings = lisp_cp_lookup_error_strings,
3631 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3634 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3635 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3641 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
3642 .function = lisp_cp_lookup_l2,
3643 .name = "lisp-cp-lookup-l2",
3644 .vector_size = sizeof (u32),
3645 .format_trace = format_lisp_cp_lookup_trace,
3646 .type = VLIB_NODE_TYPE_INTERNAL,
3648 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3649 .error_strings = lisp_cp_lookup_error_strings,
3651 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3654 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3655 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3661 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
3662 .function = lisp_cp_lookup_nsh,
3663 .name = "lisp-cp-lookup-nsh",
3664 .vector_size = sizeof (u32),
3665 .format_trace = format_lisp_cp_lookup_trace,
3666 .type = VLIB_NODE_TYPE_INTERNAL,
3668 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3669 .error_strings = lisp_cp_lookup_error_strings,
3671 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3674 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3675 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3680 /* lisp_cp_input statistics */
3681 #define foreach_lisp_cp_input_error \
3683 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
3684 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
3685 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
3686 _(MAP_REPLIES_RECEIVED, "map-replies received")
3688 static char *lisp_cp_input_error_strings[] = {
3689 #define _(sym,string) string,
3690 foreach_lisp_cp_input_error
3696 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
3697 foreach_lisp_cp_input_error
3699 LISP_CP_INPUT_N_ERROR,
3700 } lisp_cp_input_error_t;
3704 gid_address_t dst_eid;
3705 ip4_address_t map_resolver_ip;
3706 } lisp_cp_input_trace_t;
3709 format_lisp_cp_input_trace (u8 * s, va_list * args)
3711 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
3712 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
3713 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
3714 va_arg (*args, lisp_cp_input_trace_t *);
3716 s = format (s, "LISP-CP-INPUT: TODO");
3721 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3724 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3725 clib_memset (adj_args, 0, sizeof (adj_args[0]));
3727 m = pool_elt_at_index (lcm->mapping_pool, mi);
3729 gid_address_copy (&adj_args->reid, &m->eid);
3730 adj_args->is_add = 0;
3731 if (vnet_lisp_add_del_adjacency (adj_args))
3732 clib_warning ("failed to del adjacency!");
3734 TW (tw_timer_stop) (&lcm->wheel, m->timer_handle);
3735 vnet_lisp_del_mapping (&m->eid, NULL);
3739 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
3740 f64 expiration_time)
3743 u64 now = clib_cpu_time_now ();
3744 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
3745 u64 exp_clock_time = now + expiration_time * cpu_cps;
3747 m = pool_elt_at_index (lcm->mapping_pool, mi);
3750 m->timer_handle = TW (tw_timer_start) (&lcm->wheel, mi, 0, exp_clock_time);
3754 process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3757 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
3758 mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
3764 if (m->delete_after_expiration)
3766 remove_expired_mapping (lcm, mi);
3770 fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
3774 fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
3776 clib_memset (a, 0, sizeof (*a));
3777 a->rmt_eid = fe->reid;
3779 a->lcl_eid = fe->leid;
3780 a->vni = gid_address_vni (&fe->reid);
3782 rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
3786 if (m->almost_expired)
3788 m->almost_expired = 0; /* reset flag */
3791 if (m->packets != c.packets)
3793 /* mapping is in use, re-fetch */
3794 map_request_args_t mr_args;
3795 clib_memset (&mr_args, 0, sizeof (mr_args));
3796 mr_args.seid = fe->leid;
3797 mr_args.deid = fe->reid;
3799 send_map_request_thread_fn (&mr_args);
3802 remove_expired_mapping (lcm, mi);
3805 remove_expired_mapping (lcm, mi);
3809 m->almost_expired = 1;
3810 mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
3814 m->packets = c.packets;
3816 m->delete_after_expiration = 1;
3821 map_records_arg_free (map_records_arg_t * a)
3823 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3825 vec_foreach (m, a->mappings)
3827 vec_free (m->locators);
3828 gid_address_free (&m->eid);
3830 pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
3834 process_map_reply (map_records_arg_t * a)
3837 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3838 u32 dst_map_index = 0;
3839 pending_map_request_t *pmr;
3844 if (a->is_rloc_probe)
3847 /* Check pending requests table and nonce */
3848 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3851 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3854 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3856 vec_foreach (m, a->mappings)
3858 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
3859 clib_memset (m_args, 0, sizeof (m_args[0]));
3860 gid_address_copy (&m_args->eid, &m->eid);
3861 m_args->action = m->action;
3862 m_args->authoritative = m->authoritative;
3863 m_args->ttl = m->ttl;
3864 m_args->is_static = 0;
3866 /* insert/update mappings cache */
3867 vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
3869 if (dst_map_index == (u32) ~ 0)
3874 /* try to program forwarding only if mapping saved or updated */
3875 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3876 clib_memset (adj_args, 0, sizeof (adj_args[0]));
3878 gid_address_copy (&adj_args->leid, &pmr->src);
3879 gid_address_copy (&adj_args->reid, &m->eid);
3880 adj_args->is_add = 1;
3882 if (vnet_lisp_add_del_adjacency (adj_args))
3883 clib_warning ("failed to add adjacency!");
3886 if ((u32) ~ 0 != m->ttl)
3887 mapping_start_expiration_timer (lcm, dst_map_index,
3888 (m->ttl == 0) ? 0 : MAPPING_TIMEOUT);
3891 /* remove pending map request entry */
3894 clib_fifo_foreach (noncep, pmr->nonces, ({
3895 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3899 clib_fifo_free (pmr->nonces);
3900 pool_put (lcm->pending_map_requests_pool, pmr);
3908 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3909 lisp_key_type_t key_id, u8 * key)
3911 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3915 vnet_crypto_op_t _op, *op = &_op;
3916 vnet_crypto_key_index_t ki;
3917 u8 out[EVP_MAX_MD_SIZE] = { 0, };
3919 auth_data_len = auth_data_len_by_key_id (key_id);
3920 if ((u16) ~ 0 == auth_data_len)
3922 clib_warning ("invalid length for key_id %d!", key_id);
3926 /* save auth data */
3927 vec_validate (auth_data, auth_data_len - 1);
3928 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3930 /* clear auth data */
3931 clib_memset (MNOTIFY_DATA (h), 0, auth_data_len);
3933 vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id));
3940 ki = vnet_crypto_key_add (lcm->vlib_main,
3941 lisp_key_type_to_crypto_alg (key_id), key,
3946 vnet_crypto_process_ops (lcm->vlib_main, op, 1);
3947 vnet_crypto_key_del (lcm->vlib_main, ki);
3949 result = memcmp (out, auth_data, auth_data_len);
3951 vec_free (auth_data);
3957 process_map_notify (map_records_arg_t * a)
3959 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3962 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3965 clib_warning ("No pending map-register entry with nonce %lu!",
3971 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
3972 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3974 /* reset map-notify counter */
3975 lcm->expired_map_registers = 0;
3979 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3983 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3986 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3990 return pool_elt_at_index (lcm->mapping_pool, mi);
3994 * When map-notify is received it is necessary that all EIDs in the record
3995 * list share common key. The key is then used to verify authentication
3996 * data in map-notify message.
3999 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
4000 u32 key_id, u8 ** key_out)
4002 u32 i, len = vec_len (maps);
4005 /* get key of the first mapping */
4006 m = get_mapping (lcm, &maps[0].eid);
4010 key_out[0] = m->key;
4012 for (i = 1; i < len; i++)
4014 m = get_mapping (lcm, &maps[i].eid);
4018 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
4020 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
4028 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
4030 locator_t *locators = 0;
4036 clib_memset (&m, 0, sizeof (m));
4038 /* parse record eid */
4039 for (i = 0; i < count; i++)
4042 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
4045 clib_warning ("Failed to parse mapping record!");
4046 vec_foreach (loc, locators) locator_free (loc);
4047 vec_free (locators);
4051 m.locators = locators;
4052 gid_address_copy (&m.eid, &deid);
4053 vec_add1 (a->mappings, m);
4059 static map_records_arg_t *
4060 map_record_args_get ()
4062 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4063 map_records_arg_t *rec;
4067 pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()]) {
4069 map_records_arg_free (rec);
4073 pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
4077 static map_records_arg_t *
4078 parse_map_notify (vlib_buffer_t * b)
4081 map_notify_hdr_t *mnotif_hdr;
4082 lisp_key_type_t key_id;
4083 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4086 u16 auth_data_len = 0;
4088 map_records_arg_t *a;
4090 a = map_record_args_get ();
4091 clib_memset (a, 0, sizeof (*a));
4092 mnotif_hdr = vlib_buffer_get_current (b);
4093 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
4094 clib_memset (&deid, 0, sizeof (deid));
4096 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
4097 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
4098 auth_data_len = auth_data_len_by_key_id (key_id);
4100 /* advance buffer by authentication data */
4101 vlib_buffer_pull (b, auth_data_len);
4103 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
4104 rc = parse_map_records (b, a, record_count);
4107 map_records_arg_free (a);
4111 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
4114 map_records_arg_free (a);
4118 /* verify authentication data */
4119 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
4120 - (u8 *) mnotif_hdr, key_id, key))
4122 clib_warning ("Map-notify auth data verification failed for nonce "
4123 "0x%lx!", a->nonce);
4124 map_records_arg_free (a);
4130 static vlib_buffer_t *
4131 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
4132 ip_address_t * dst, u64 nonce, u8 probe_bit,
4133 mapping_t * records, u16 dst_port, u32 * bi_res)
4137 vlib_main_t *vm = lcm->vlib_main;
4139 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
4141 clib_warning ("Can't allocate buffer for Map-Register!");
4145 b = vlib_get_buffer (vm, bi);
4147 /* leave some space for the encap headers */
4148 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
4150 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
4152 /* push outer ip header */
4153 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
4160 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
4161 u8 probe_bit, u64 nonce, u16 dst_port,
4162 ip_address_t * probed_loc)
4168 u32 next_index, *to_next;
4169 mapping_t *records = 0, *m;
4171 m = pool_elt_at_index (lcm->mapping_pool, mi);
4172 vec_add1 (records, m[0]);
4173 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
4174 clib_memset (&src, 0, sizeof (src));
4176 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
4178 clib_warning ("can't find interface address for %U", format_ip_address,
4183 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
4187 free_map_register_records (records);
4189 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
4190 next_index = (ip_addr_version (&lcm->active_map_resolver) == AF_IP4) ?
4191 ip4_lookup_node.index : ip6_lookup_node.index;
4193 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
4195 /* Enqueue the packet */
4196 to_next = vlib_frame_vector_args (f);
4199 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
4204 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
4206 const i32 start = vnet_buffer (b)->l3_hdr_offset;
4207 if (start < 0 && start < -sizeof (b->pre_data))
4213 *ip_hdr = b->data + start;
4214 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
4219 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
4220 lisp_cp_main_t * lcm, vlib_buffer_t * b)
4223 ip_address_t *dst_loc = 0, probed_loc, src_loc;
4225 map_request_hdr_t *mreq_hdr;
4226 gid_address_t src, dst;
4228 u32 i, len = 0, rloc_probe_recv = 0;
4229 gid_address_t *itr_rlocs = 0;
4231 mreq_hdr = vlib_buffer_get_current (b);
4232 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
4235 ("Only SMR Map-Requests and RLOC probe supported for now!");
4239 vlib_buffer_pull (b, sizeof (*mreq_hdr));
4240 nonce = MREQ_NONCE (mreq_hdr);
4243 len = lisp_msg_parse_addr (b, &src);
4247 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
4248 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
4252 /* parse eid records and send SMR-invoked map-requests */
4253 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
4255 clib_memset (&dst, 0, sizeof (dst));
4256 len = lisp_msg_parse_eid_rec (b, &dst);
4259 clib_warning ("Can't parse map-request EID-record");
4263 if (MREQ_SMR (mreq_hdr))
4265 /* send SMR-invoked map-requests */
4266 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
4268 else if (MREQ_RLOC_PROBE (mreq_hdr))
4270 find_ip_header (b, &ip_hdr);
4273 clib_warning ("Cannot find the IP header!");
4277 clib_memset (&m, 0, sizeof (m));
4278 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
4280 // TODO: select best locator; for now use the first one
4281 dst_loc = &gid_address_ip (&itr_rlocs[0]);
4283 /* get src/dst IP addresses */
4284 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
4286 // TODO get source port from buffer
4287 u16 src_port = LISP_CONTROL_PORT;
4289 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
4290 src_port, &probed_loc);
4295 vlib_node_increment_counter (vm, node->node_index,
4296 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
4298 vec_free (itr_rlocs);
4302 parse_map_reply (vlib_buffer_t * b)
4309 map_reply_hdr_t *mrep_hdr;
4310 map_records_arg_t *a;
4312 a = map_record_args_get ();
4313 clib_memset (a, 0, sizeof (*a));
4315 locator_t *locators;
4317 mrep_hdr = vlib_buffer_get_current (b);
4318 a->nonce = MREP_NONCE (mrep_hdr);
4319 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
4320 if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
4322 map_records_arg_free (a);
4325 vlib_buffer_pull (b, sizeof (*mrep_hdr));
4327 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
4329 clib_memset (&m, 0, sizeof (m));
4331 h = vlib_buffer_get_current (b);
4333 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
4334 m.action = MAP_REC_ACTION (h);
4335 m.authoritative = MAP_REC_AUTH (h);
4337 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
4340 clib_warning ("Failed to parse mapping record!");
4341 map_records_arg_free (a);
4345 m.locators = locators;
4346 gid_address_copy (&m.eid, &deid);
4347 vec_add1 (a->mappings, m);
4353 queue_map_reply_for_processing (map_records_arg_t * a)
4355 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
4359 queue_map_notify_for_processing (map_records_arg_t * a)
4361 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
4365 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
4366 vlib_frame_t * from_frame)
4368 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
4369 map_notifies_recv = 0;
4370 lisp_msg_type_e type;
4371 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4372 map_records_arg_t *a;
4374 from = vlib_frame_vector_args (from_frame);
4375 n_left_from = from_frame->n_vectors;
4378 while (n_left_from > 0)
4380 u32 n_left_to_next_drop;
4382 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4383 to_next_drop, n_left_to_next_drop);
4384 while (n_left_from > 0 && n_left_to_next_drop > 0)
4392 to_next_drop[0] = bi0;
4394 n_left_to_next_drop -= 1;
4396 b0 = vlib_get_buffer (vm, bi0);
4398 type = lisp_msg_type (vlib_buffer_get_current (b0));
4401 case LISP_MAP_REPLY:
4402 a = parse_map_reply (b0);
4405 if (a->is_rloc_probe)
4406 rloc_probe_rep_recv++;
4407 queue_map_reply_for_processing (a);
4410 case LISP_MAP_REQUEST:
4411 process_map_request (vm, node, lcm, b0);
4413 case LISP_MAP_NOTIFY:
4414 a = parse_map_notify (b0);
4417 map_notifies_recv++;
4418 queue_map_notify_for_processing (a);
4422 clib_warning ("Unsupported LISP message type %d", type);
4426 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
4428 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
4434 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4435 n_left_to_next_drop);
4437 vlib_node_increment_counter (vm, node->node_index,
4438 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
4439 rloc_probe_rep_recv);
4440 vlib_node_increment_counter (vm, node->node_index,
4441 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
4443 return from_frame->n_vectors;
4447 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
4448 .function = lisp_cp_input,
4449 .name = "lisp-cp-input",
4450 .vector_size = sizeof (u32),
4451 .format_trace = format_lisp_cp_input_trace,
4452 .type = VLIB_NODE_TYPE_INTERNAL,
4454 .n_errors = LISP_CP_INPUT_N_ERROR,
4455 .error_strings = lisp_cp_input_error_strings,
4457 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
4460 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
4466 lisp_cp_init (vlib_main_t * vm)
4468 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4469 clib_error_t *error = 0;
4470 vlib_thread_main_t *vtm = vlib_get_thread_main ();
4473 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
4476 lcm->im4 = &ip4_main;
4477 lcm->im6 = &ip6_main;
4478 lcm->vlib_main = vm;
4479 lcm->vnet_main = vnet_get_main ();
4480 lcm->mreq_itr_rlocs = ~0;
4482 lcm->pitr_map_index = ~0;
4483 lcm->petr_map_index = ~0;
4484 clib_memset (&lcm->active_map_resolver, 0,
4485 sizeof (lcm->active_map_resolver));
4486 clib_memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
4488 gid_dictionary_init (&lcm->mapping_index_by_gid);
4489 lcm->do_map_resolver_election = 1;
4490 lcm->do_map_server_election = 1;
4491 lcm->map_request_mode = MR_MODE_DST_ONLY;
4493 num_threads = 1 /* main thread */ + vtm->n_threads;
4494 vec_validate (lcm->map_records_args_pool, num_threads - 1);
4496 /* default vrf mapped to vni 0 */
4497 hash_set (lcm->table_id_by_vni, 0, 0);
4498 hash_set (lcm->vni_by_table_id, 0, 0);
4500 TW (tw_timer_wheel_init) (&lcm->wheel, 0 /* no callback */ ,
4501 1e-3 /* timer period 1ms */ ,
4502 ~0 /* max expirations per call */ );
4503 lcm->nsh_map_index = ~0;
4504 lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
4505 lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
4506 lcm->expired_map_registers = 0;
4507 lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
4508 lcm->flags |= LISP_FLAG_XTR_MODE;
4513 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
4514 lisp_api_stats_t * stat, lisp_stats_key_t * key,
4518 vlib_combined_counter_main_t *cm = &lgm->counters;
4519 lisp_gpe_fwd_entry_key_t fwd_key;
4520 const lisp_gpe_tunnel_t *lgt;
4523 clib_memset (stat, 0, sizeof (*stat));
4524 clib_memset (&fwd_key, 0, sizeof (fwd_key));
4526 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
4529 gid_to_dp_address (&fe->reid, &stat->deid);
4530 gid_to_dp_address (&fe->leid, &stat->seid);
4531 stat->vni = gid_address_vni (&fe->reid);
4533 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
4534 stat->loc_rloc = lgt->key->lcl;
4535 stat->rmt_rloc = lgt->key->rmt;
4537 vlib_get_combined_counter (cm, stats_index, &v);
4543 vnet_lisp_get_stats (void)
4545 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
4546 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4547 lisp_api_stats_t *stats = 0, stat;
4548 lisp_stats_key_t *key;
4552 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
4554 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
4555 vec_add1 (stats, stat);
4563 send_map_request_thread_fn (void *arg)
4565 map_request_args_t *a = arg;
4566 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4569 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4571 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4577 queue_map_request (gid_address_t * seid, gid_address_t * deid,
4578 u8 smr_invoked, u8 is_resend)
4580 map_request_args_t a;
4582 a.is_resend = is_resend;
4583 gid_address_copy (&a.seid, seid);
4584 gid_address_copy (&a.deid, deid);
4585 a.smr_invoked = smr_invoked;
4587 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
4588 (u8 *) & a, sizeof (a));
4593 * Take an action with a pending map request depending on expiration time
4594 * and re-try counters.
4597 update_pending_request (pending_map_request_t * r, f64 dt)
4599 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4602 if (r->time_to_expire - dt < 0)
4603 /* it's time to decide what to do with this pending request */
4605 if (r->retries_num >= NUMBER_OF_RETRIES)
4606 /* too many retries -> assume current map resolver is not available */
4608 mr = get_map_resolver (&lcm->active_map_resolver);
4611 clib_warning ("Map resolver %U not found - probably deleted "
4612 "by the user recently.", format_ip_address,
4613 &lcm->active_map_resolver);
4617 clib_warning ("map resolver %U is unreachable, ignoring",
4618 format_ip_address, &lcm->active_map_resolver);
4620 /* mark current map resolver unavailable so it won't be
4621 * selected next time */
4623 mr->last_update = vlib_time_now (lcm->vlib_main);
4626 reset_pending_mr_counters (r);
4627 elect_map_resolver (lcm);
4629 /* try to find a next eligible map resolver and re-send */
4630 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4636 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4639 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
4643 r->time_to_expire -= dt;
4647 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
4650 pending_map_request_t *pmr;
4651 u32 *to_be_removed = 0, *pmr_index;
4654 pool_foreach (pmr, lcm->pending_map_requests_pool)
4656 if (pmr->to_be_removed)
4658 clib_fifo_foreach (nonce, pmr->nonces, ({
4659 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
4662 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
4667 vec_foreach (pmr_index, to_be_removed)
4668 pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
4670 vec_free (to_be_removed);
4674 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
4676 static f64 time_left = RLOC_PROBING_INTERVAL;
4678 if (!lcm->is_enabled || !lcm->rloc_probing)
4684 time_left = RLOC_PROBING_INTERVAL;
4685 send_rloc_probes (lcm);
4690 update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
4692 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4696 r->time_to_expire -= dt;
4698 if (r->time_to_expire < 0)
4700 lcm->expired_map_registers++;
4702 if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
4704 ms = get_map_server (&lcm->active_map_server);
4707 clib_warning ("Map server %U not found - probably deleted "
4708 "by the user recently.", format_ip_address,
4709 &lcm->active_map_server);
4713 clib_warning ("map server %U is unreachable, ignoring",
4714 format_ip_address, &lcm->active_map_server);
4716 /* mark current map server unavailable so it won't be
4717 * elected next time */
4719 ms->last_update = vlib_time_now (lcm->vlib_main);
4722 elect_map_server (lcm);
4724 /* indication for deleting all pending map registers */
4726 lcm->expired_map_registers = 0;
4731 /* delete pending map register */
4739 update_map_register (lisp_cp_main_t * lcm, f64 dt)
4741 u32 *to_be_removed = 0, *pmr_index;
4742 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
4743 static u64 mreg_sent_counter = 0;
4745 pending_map_register_t *pmr;
4748 if (!lcm->is_enabled || !lcm->map_registering)
4752 pool_foreach (pmr, lcm->pending_map_registers_pool)
4754 if (!update_pending_map_register (pmr, dt, &del_all))
4758 vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
4765 /* delete all pending map register messages so they won't
4766 * trigger another map server election.. */
4767 pool_free (lcm->pending_map_registers_pool);
4768 hash_free (lcm->map_register_messages_by_nonce);
4770 /* ..and trigger registration against next map server (if any) */
4775 vec_foreach (pmr_index, to_be_removed)
4776 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4779 vec_free (to_be_removed);
4784 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
4785 time_left = MAP_REGISTER_INTERVAL;
4788 mreg_sent_counter++;
4789 time_left = QUICK_MAP_REGISTER_INTERVAL;
4791 send_map_register (lcm, 1 /* want map notify */ );
4796 send_map_resolver_service (vlib_main_t * vm,
4797 vlib_node_runtime_t * rt, vlib_frame_t * f)
4801 pending_map_request_t *pmr;
4802 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4806 vlib_process_wait_for_event_or_clock (vm, period);
4808 /* currently no signals are expected - just wait for clock */
4809 (void) vlib_process_get_events (vm, 0);
4812 pool_foreach (pmr, lcm->pending_map_requests_pool)
4814 if (!pmr->to_be_removed)
4815 update_pending_request (pmr, period);
4819 remove_dead_pending_map_requests (lcm);
4821 update_map_register (lcm, period);
4822 update_rloc_probing (lcm, period);
4824 expired = TW (tw_timer_expire_timers_vec) (&lcm->wheel,
4825 vlib_time_now (vm), expired);
4826 if (vec_len (expired) > 0)
4829 vec_foreach (mi, expired)
4831 process_expired_mapping (lcm, mi[0]);
4833 _vec_len (expired) = 0;
4842 vnet_lisp_stats_enable_disable (u8 enable)
4844 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4846 if (vnet_lisp_enable_disable_status () == 0)
4847 return VNET_API_ERROR_LISP_DISABLED;
4850 lcm->flags |= LISP_FLAG_STATS_ENABLED;
4852 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
4858 vnet_lisp_stats_enable_disable_state (void)
4860 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4862 if (vnet_lisp_enable_disable_status () == 0)
4863 return VNET_API_ERROR_LISP_DISABLED;
4865 return lcm->flags & LISP_FLAG_STATS_ENABLED;
4869 vnet_lisp_create_retry_process (lisp_cp_main_t * lcm)
4871 if (lcm->retry_service_index)
4874 lcm->retry_service_index = vlib_process_create (vlib_get_main (),
4875 "lisp-retry-service",
4876 send_map_resolver_service,
4877 16 /* stack_bytes */ );
4881 vnet_lisp_set_transport_protocol (u8 protocol)
4883 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4885 if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
4886 protocol > LISP_TRANSPORT_PROTOCOL_API)
4887 return VNET_API_ERROR_INVALID_ARGUMENT;
4889 lcm->transport_protocol = protocol;
4893 lisp_transport_protocol_t
4894 vnet_lisp_get_transport_protocol (void)
4896 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4897 return lcm->transport_protocol;
4901 vnet_lisp_enable_disable_xtr_mode (u8 is_enabled)
4903 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4904 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
4905 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4906 u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
4908 if (pitr_mode && is_enabled)
4909 return VNET_API_ERROR_INVALID_ARGUMENT;
4911 if (is_enabled && xtr_mode)
4913 if (!is_enabled && !xtr_mode)
4920 lisp_cp_register_dst_port (lcm->vlib_main);
4922 lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
4923 lcm->flags |= LISP_FLAG_XTR_MODE;
4929 lisp_cp_unregister_dst_port (lcm->vlib_main);
4931 lisp_cp_disable_l2_l3_ifaces (lcm);
4932 lcm->flags &= ~LISP_FLAG_XTR_MODE;
4938 vnet_lisp_enable_disable_pitr_mode (u8 is_enabled)
4940 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4941 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4942 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
4944 if (xtr_mode && is_enabled)
4945 return VNET_API_ERROR_INVALID_VALUE;
4947 if (is_enabled && pitr_mode)
4949 if (!is_enabled && !pitr_mode)
4954 /* create iface, no default route */
4955 lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
4956 lcm->flags |= LISP_FLAG_PITR_MODE;
4960 lisp_cp_disable_l2_l3_ifaces (lcm);
4961 lcm->flags &= ~LISP_FLAG_PITR_MODE;
4967 vnet_lisp_enable_disable_petr_mode (u8 is_enabled)
4969 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4970 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4971 u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
4973 if (is_enabled && petr_mode)
4975 if (!is_enabled && !petr_mode)
4982 lisp_cp_register_dst_port (lcm->vlib_main);
4984 lcm->flags |= LISP_FLAG_PETR_MODE;
4990 lisp_cp_unregister_dst_port (lcm->vlib_main);
4992 lcm->flags &= ~LISP_FLAG_PETR_MODE;
4998 vnet_lisp_get_xtr_mode (void)
5000 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5001 return (lcm->flags & LISP_FLAG_XTR_MODE);
5005 vnet_lisp_get_pitr_mode (void)
5007 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5008 return (lcm->flags & LISP_FLAG_PITR_MODE);
5012 vnet_lisp_get_petr_mode (void)
5014 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5015 return (lcm->flags & LISP_FLAG_PETR_MODE);
5018 VLIB_INIT_FUNCTION (lisp_cp_init);
5021 * fd.io coding-style-patch-verification: ON
5024 * eval: (c-set-style "gnu")