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 <vnet/lisp-cp/control.h>
18 #include <vnet/lisp-cp/packets.h>
19 #include <vnet/lisp-cp/lisp_msg_serdes.h>
20 #include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h>
21 #include <vnet/lisp-gpe/lisp_gpe_tenant.h>
22 #include <vnet/fib/fib_entry.h>
23 #include <vnet/fib/fib_table.h>
25 #include <openssl/evp.h>
26 #include <openssl/hmac.h>
28 lisp_cp_main_t lisp_control_main;
30 u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
34 LISP_CP_INPUT_NEXT_DROP,
36 } lisp_cp_input_next_t;
54 vnet_lisp_get_map_request_mode (void)
56 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
57 return lcm->map_request_mode;
61 auth_data_len_by_key_id (lisp_key_type_t key_id)
66 return SHA1_AUTH_DATA_LEN;
67 case HMAC_SHA_256_128:
68 return SHA256_AUTH_DATA_LEN;
70 clib_warning ("unsupported key type: %d!", key_id);
77 get_encrypt_fcn (lisp_key_type_t key_id)
83 case HMAC_SHA_256_128:
86 clib_warning ("unsupported encryption key type: %d!", key_id);
93 queue_map_request (gid_address_t * seid, gid_address_t * deid,
94 u8 smr_invoked, u8 is_resend);
96 ip_interface_address_t *
97 ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
98 u32 sw_if_index, u8 loop)
100 vnet_main_t *vnm = vnet_get_main ();
101 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
102 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
103 sw_if_index = swif->unnumbered_sw_if_index;
105 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
106 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
108 return pool_elt_at_index ((lm)->if_address_pool, ia);
112 ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
115 ip_interface_address_t *ia;
117 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
120 return ip_interface_address_get_address (lm, ia);
124 ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
125 u8 version, ip_address_t * result)
127 ip_lookup_main_t *lm;
130 lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
131 addr = ip_interface_get_first_address (lm, sw_if_index, version);
135 ip_address_set (result, addr, version);
140 * convert from a LISP address to a FIB prefix
143 ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
145 if (addr->version == IP4)
148 prefix->fp_proto = FIB_PROTOCOL_IP4;
149 memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
150 memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
154 prefix->fp_len = 128;
155 prefix->fp_proto = FIB_PROTOCOL_IP6;
156 memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
161 * convert from a LISP to a FIB prefix
164 ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
165 fib_prefix_t * fib_prefix)
167 ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
168 fib_prefix->fp_len = ip_prefix->len;
172 * Find the sw_if_index of the interface that would be used to egress towards
176 ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
178 fib_node_index_t fei;
181 ip_address_to_fib_prefix (dst, &prefix);
183 fei = fib_table_lookup (0, &prefix);
185 return (fib_entry_get_resolving_interface (fei));
189 * Find first IP of the interface that would be used to egress towards dst.
190 * Returns 1 if the address is found 0 otherwise.
193 ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
194 ip_address_t * result)
197 ip_lookup_main_t *lm;
201 ASSERT (result != 0);
203 ipver = ip_addr_version (dst);
205 lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
206 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
211 /* find the first ip address */
212 addr = ip_interface_get_first_address (lm, si, ipver);
216 ip_address_set (result, addr, ipver);
221 dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add)
227 dp_table = hash_get (lcm->table_id_by_vni, vni);
231 clib_warning ("vni %d not associated to a vrf!", vni);
232 return VNET_API_ERROR_INVALID_VALUE;
237 dp_table = hash_get (lcm->bd_id_by_vni, vni);
240 clib_warning ("vni %d not associated to a bridge domain!", vni);
241 return VNET_API_ERROR_INVALID_VALUE;
245 /* enable/disable data-plane interface */
249 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
251 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0]);
256 lisp_gpe_tenant_l2_iface_unlock (vni);
258 lisp_gpe_tenant_l3_iface_unlock (vni);
265 dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
267 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
270 memset (a, 0, sizeof (*a));
272 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
276 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
278 /* delete dp fwd entry */
281 a->locator_pairs = fe->locator_pairs;
282 a->vni = gid_address_vni (&fe->reid);
283 gid_address_copy (&a->rmt_eid, &fe->reid);
285 gid_address_copy (&a->lcl_eid, &fe->leid);
287 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
289 /* delete entry in fwd table */
290 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
291 vec_free (fe->locator_pairs);
292 pool_put (lcm->fwd_entry_pool, fe);
296 * Finds first remote locator with best (lowest) priority that has a local
297 * peer locator with an underlying route to it.
301 get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
302 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
304 u32 i, limitp = 0, li, found = 0, esi;
305 locator_set_t *rmt_ls, *lcl_ls;
306 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
307 locator_t *lp, *rmt = 0;
312 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
314 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
316 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
323 /* find unvisited remote locator with best priority */
324 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
326 if (0 != hash_get (checked, i))
329 li = vec_elt (rmt_ls->locator_indices, i);
330 lp = pool_elt_at_index (lcm->locator_pool, li);
332 /* we don't support non-IP locators for now */
333 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
336 if ((found && lp->priority == limitp)
337 || (!found && lp->priority >= limitp))
341 /* don't search for locators with lower priority and don't
342 * check this locator again*/
343 limitp = lp->priority;
344 hash_set (checked, i, 1);
348 /* check if a local locator with a route to remote locator exists */
351 /* find egress sw_if_index for rmt locator */
353 ip_fib_get_egress_iface_for_dst (lcm,
354 &gid_address_ip (&rmt->address));
355 if ((u32) ~ 0 == esi)
358 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
360 li = vec_elt (lcl_ls->locator_indices, i);
361 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
363 /* found local locator with the needed sw_if_index */
364 if (sl->sw_if_index == esi)
366 /* and it has an address */
367 if (0 == ip_interface_get_first_ip_address (lcm,
369 gid_address_ip_version
374 memset (&pair, 0, sizeof (pair));
375 ip_address_copy (&pair.rmt_loc,
376 &gid_address_ip (&rmt->address));
377 ip_address_copy (&pair.lcl_loc, lcl_addr);
378 pair.weight = rmt->weight;
379 pair.priority = rmt->priority;
380 vec_add1 (locator_pairs[0], pair);
394 gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
397 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
401 switch (fid_addr_type (fid))
403 case FID_ADDR_IP_PREF:
404 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
405 gid_address_ippref (dst) = fid_addr_ippref (fid);
408 gid_address_type (dst) = GID_ADDR_MAC;
409 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
412 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
418 vnet_lisp_map_register_state_get (void)
420 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
421 return lcm->map_registering;
425 vnet_lisp_rloc_probe_state_get (void)
427 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
428 return lcm->rloc_probing;
432 dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
434 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
435 gid_address_t *rmt_eid, *lcl_eid;
436 mapping_t *lcl_map, *rmt_map;
438 uword *feip = 0, *dpid;
440 u8 type, is_src_dst = 0;
443 memset (a, 0, sizeof (*a));
445 /* remove entry if it already exists */
446 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
448 dp_del_fwd_entry (lcm, src_map_index, dst_map_index);
451 * Determine local mapping and eid
454 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
456 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
457 lcl_eid = &lcl_map->eid;
460 * Determine remote mapping and eid
462 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
463 rmt_eid = &rmt_map->eid;
466 * Build and insert data plane forwarding entry
470 if (MR_MODE_SRC_DST == lcm->map_request_mode)
472 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
474 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
475 &gid_address_sd_dst (rmt_eid));
476 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
477 &gid_address_sd_src (rmt_eid));
481 gid_address_copy (&a->rmt_eid, rmt_eid);
482 gid_address_copy (&a->lcl_eid, lcl_eid);
487 gid_address_copy (&a->rmt_eid, rmt_eid);
489 a->vni = gid_address_vni (&a->rmt_eid);
491 /* get vrf or bd_index associated to vni */
492 type = gid_address_type (&a->rmt_eid);
493 if (GID_ADDR_IP_PREFIX == type)
495 dpid = hash_get (lcm->table_id_by_vni, a->vni);
498 clib_warning ("vni %d not associated to a vrf!", a->vni);
501 a->table_id = dpid[0];
503 else if (GID_ADDR_MAC == type)
505 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
508 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
514 /* find best locator pair that 1) verifies LISP policy 2) are connected */
515 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
517 /* Either rmt mapping is negative or we can't find underlay path.
518 * Try again with petr if configured */
519 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
521 rmt_map = lisp_get_petr_mapping (lcm);
522 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
529 a->action = rmt_map->action;
532 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
534 /* add tunnel to fwd entry table XXX check return value from DP insertion */
535 pool_get (lcm->fwd_entry_pool, fe);
536 fe->locator_pairs = a->locator_pairs;
537 gid_address_copy (&fe->reid, &a->rmt_eid);
540 gid_address_copy (&fe->leid, &a->lcl_eid);
542 gid_address_copy (&fe->leid, lcl_eid);
544 fe->is_src_dst = is_src_dst;
545 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
546 fe - lcm->fwd_entry_pool);
553 } fwd_entry_mt_arg_t;
556 dp_add_fwd_entry_thread_fn (void *arg)
558 fwd_entry_mt_arg_t *a = arg;
559 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
560 dp_add_fwd_entry (lcm, a->si, a->di);
565 dp_add_fwd_entry_from_mt (u32 si, u32 di)
567 fwd_entry_mt_arg_t a;
569 memset (&a, 0, sizeof (a));
573 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
574 (u8 *) & a, sizeof (a));
579 * Returns vector of adjacencies.
581 * The caller must free the vector returned by this function.
583 * @param vni virtual network identifier
584 * @return vector of adjacencies
587 vnet_lisp_adjacencies_get_by_vni (u32 vni)
589 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
591 lisp_adjacency_t *adjs = 0, adj;
594 pool_foreach(fwd, lcm->fwd_entry_pool,
596 if (gid_address_vni (&fwd->reid) != vni)
599 gid_address_copy (&adj.reid, &fwd->reid);
600 gid_address_copy (&adj.leid, &fwd->leid);
601 vec_add1 (adjs, adj);
609 get_map_server (ip_address_t * a)
611 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
614 vec_foreach (m, lcm->map_servers)
616 if (!ip_address_cmp (&m->address, a))
625 get_map_resolver (ip_address_t * a)
627 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
630 vec_foreach (m, lcm->map_resolvers)
632 if (!ip_address_cmp (&m->address, a))
641 vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
644 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
645 lisp_msmr_t _ms, *ms = &_ms;
647 if (vnet_lisp_enable_disable_status () == 0)
649 clib_warning ("LISP is disabled!");
650 return VNET_API_ERROR_LISP_DISABLED;
655 if (get_map_server (addr))
657 clib_warning ("map-server %U already exists!", format_ip_address,
662 memset (ms, 0, sizeof (*ms));
663 ip_address_copy (&ms->address, addr);
664 vec_add1 (lcm->map_servers, ms[0]);
668 for (i = 0; i < vec_len (lcm->map_servers); i++)
670 ms = vec_elt_at_index (lcm->map_servers, i);
671 if (!ip_address_cmp (&ms->address, addr))
673 vec_del1 (lcm->map_servers, i);
683 * Add/remove mapping to/from map-cache. Overwriting not allowed.
686 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
687 u32 * map_index_result)
689 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
690 u32 mi, *map_indexp, map_index, i;
691 mapping_t *m, *old_map;
694 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
695 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
698 /* TODO check if overwriting and take appropriate actions */
699 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
701 clib_warning ("eid %U found in the eid-table", format_gid_address,
703 return VNET_API_ERROR_VALUE_EXIST;
706 pool_get (lcm->mapping_pool, m);
707 gid_address_copy (&m->eid, &a->eid);
708 m->locator_set_index = a->locator_set_index;
710 m->action = a->action;
712 m->is_static = a->is_static;
713 m->key = vec_dup (a->key);
714 m->key_id = a->key_id;
716 map_index = m - lcm->mapping_pool;
717 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
720 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
722 clib_warning ("Locator set with index %d doesn't exist",
723 a->locator_set_index);
724 return VNET_API_ERROR_INVALID_VALUE;
727 /* add eid to list of eids supported by locator-set */
728 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
729 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
730 a->locator_set_index);
731 vec_add1 (eid_indexes[0], map_index);
736 vec_add1 (lcm->local_mappings_indexes, map_index);
738 map_index_result[0] = map_index;
742 if (mi == GID_LOOKUP_MISS)
744 clib_warning ("eid %U not found in the eid-table",
745 format_gid_address, &a->eid);
746 return VNET_API_ERROR_INVALID_VALUE;
749 /* clear locator-set to eids binding */
750 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
751 a->locator_set_index);
752 for (i = 0; i < vec_len (eid_indexes[0]); i++)
754 map_indexp = vec_elt_at_index (eid_indexes[0], i);
755 if (map_indexp[0] == mi)
758 vec_del1 (eid_indexes[0], i);
760 /* remove local mark if needed */
761 m = pool_elt_at_index (lcm->mapping_pool, mi);
765 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
767 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
768 if (lm_indexp[0] == mi)
771 vec_del1 (lcm->local_mappings_indexes, k);
774 /* remove mapping from dictionary */
775 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
776 gid_address_free (&m->eid);
777 pool_put_index (lcm->mapping_pool, mi);
784 * Add/update/delete mapping to/in/from map-cache.
787 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
788 u32 * map_index_result)
794 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
796 if (vnet_lisp_enable_disable_status () == 0)
798 clib_warning ("LISP is disabled!");
799 return VNET_API_ERROR_LISP_DISABLED;
802 vni = gid_address_vni (&a->eid);
803 type = gid_address_type (&a->eid);
804 if (GID_ADDR_IP_PREFIX == type)
805 dp_table = hash_get (lcm->table_id_by_vni, vni);
806 else if (GID_ADDR_MAC == type)
807 dp_table = hash_get (lcm->bd_id_by_vni, vni);
811 clib_warning ("vni %d not associated to a %s!", vni,
812 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
813 return VNET_API_ERROR_INVALID_VALUE;
816 /* store/remove mapping from map-cache */
817 return vnet_lisp_map_cache_add_del (a, map_index_result);
821 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
823 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
824 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
826 if (vnet_lisp_enable_disable_status () == 0)
828 clib_warning ("LISP is disabled!");
832 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
833 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
835 if (!is_l2 && (vni == 0 || dp_id == 0))
837 clib_warning ("can't add/del default vni-vrf mapping!");
841 dp_idp = hash_get (dp_table_by_vni[0], vni);
842 vnip = hash_get (vni_by_dp_table[0], dp_id);
848 clib_warning ("vni %d or vrf %d already used in vrf/vni "
849 "mapping!", vni, dp_id);
852 hash_set (dp_table_by_vni[0], vni, dp_id);
853 hash_set (vni_by_dp_table[0], dp_id, vni);
855 /* create dp iface */
856 dp_add_del_iface (lcm, vni, is_l2, 1);
860 if (!dp_idp || !vnip)
862 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
863 "mapping!", vni, dp_id);
866 hash_unset (dp_table_by_vni[0], vni);
867 hash_unset (vni_by_dp_table[0], dp_id);
869 /* remove dp iface */
870 dp_add_del_iface (lcm, vni, is_l2, 0);
876 /* return 0 if the two locator sets are identical 1 otherwise */
878 compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
879 locator_t * new_locators)
882 locator_t *old_loc, *new_loc;
884 if (vec_len (old_ls_indexes) != vec_len (new_locators))
887 for (i = 0; i < vec_len (new_locators); i++)
889 old_li = vec_elt (old_ls_indexes, i);
890 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
892 new_loc = vec_elt_at_index (new_locators, i);
894 if (locator_cmp (old_loc, new_loc))
904 gid_address_t *eids_to_be_deleted;
905 } remove_mapping_args_t;
908 * Callback invoked when a sub-prefix is found
911 remove_mapping_if_needed (u32 mi, void *arg)
914 remove_mapping_args_t *a = arg;
915 lisp_cp_main_t *lcm = a->lcm;
919 m = pool_elt_at_index (lcm->mapping_pool, mi);
923 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
927 if (0 != vec_len (ls->locator_indices))
932 if (0 == vec_len (ls->locator_indices))
937 vec_add1 (a->eids_to_be_deleted, m->eid);
941 * This function searches map cache and looks for IP prefixes that are subset
942 * of the provided one. If such prefix is found depending on 'is_negative'
945 * 1) if is_negative is true and found prefix points to positive mapping,
946 * then the mapping is removed
947 * 2) if is_negative is false and found prefix points to negative mapping,
948 * then the mapping is removed
951 remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
955 remove_mapping_args_t a;
957 memset (&a, 0, sizeof (a));
959 /* do this only in src/dst mode ... */
960 if (MR_MODE_SRC_DST != lcm->map_request_mode)
963 /* ... and only for IP prefix */
964 if (GID_ADDR_SRC_DST != gid_address_type (eid)
965 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
968 a.is_negative = is_negative;
971 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
972 remove_mapping_if_needed, &a);
974 vec_foreach (e, a.eids_to_be_deleted)
976 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
978 memset (adj_args, 0, sizeof (adj_args[0]));
979 gid_address_copy (&adj_args->reid, e);
980 adj_args->is_add = 0;
981 if (vnet_lisp_add_del_adjacency (adj_args))
982 clib_warning ("failed to del adjacency!");
984 vnet_lisp_add_del_mapping (e, 0, 0, 0, 0, 0 /* is add */ , 0, 0);
987 vec_free (a.eids_to_be_deleted);
991 mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
993 timing_wheel_delete (&lcm->wheel, mi);
997 * Adds/removes/updates mapping. Does not program forwarding.
999 * @param eid end-host identifier
1000 * @param rlocs vector of remote locators
1001 * @param action action for negative map-reply
1002 * @param is_add add mapping if non-zero, delete otherwise
1003 * @param res_map_index the map-index that was created/updated/removed. It is
1004 * set to ~0 if no action is taken.
1005 * @param is_static used for distinguishing between statically learned
1006 remote mappings and mappings obtained from MR
1007 * @return return code
1010 vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
1011 u8 authoritative, u32 ttl, u8 is_add, u8 is_static,
1012 u32 * res_map_index)
1014 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1015 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1016 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1017 u32 mi, ls_index = 0, dst_map_index;
1020 if (vnet_lisp_enable_disable_status () == 0)
1022 clib_warning ("LISP is disabled!");
1023 return VNET_API_ERROR_LISP_DISABLED;
1027 res_map_index[0] = ~0;
1029 memset (m_args, 0, sizeof (m_args[0]));
1030 memset (ls_args, 0, sizeof (ls_args[0]));
1032 ls_args->locators = rlocs;
1034 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1035 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1039 /* overwrite: if mapping already exists, decide if locators should be
1040 * updated and be done */
1041 if (old_map && gid_address_cmp (&old_map->eid, eid) == 0)
1043 if (!is_static && (old_map->is_static || old_map->local))
1045 /* do not overwrite local or static remote mappings */
1046 clib_warning ("mapping %U rejected due to collision with local "
1047 "or static remote mapping!", format_gid_address,
1052 locator_set_t *old_ls;
1054 /* update mapping attributes */
1055 old_map->action = action;
1056 old_map->authoritative = authoritative;
1059 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1060 old_map->locator_set_index);
1061 if (compare_locators (lcm, old_ls->locator_indices,
1064 /* set locator-set index to overwrite */
1065 ls_args->is_add = 1;
1066 ls_args->index = old_map->locator_set_index;
1067 vnet_lisp_add_del_locator_set (ls_args, 0);
1069 res_map_index[0] = mi;
1075 remove_overlapping_sub_prefixes (lcm, eid, 0 == ls_args->locators);
1077 ls_args->is_add = 1;
1078 ls_args->index = ~0;
1080 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1083 gid_address_copy (&m_args->eid, eid);
1085 m_args->action = action;
1086 m_args->locator_set_index = ls_index;
1087 m_args->is_static = is_static;
1089 vnet_lisp_map_cache_add_del (m_args, &dst_map_index);
1092 res_map_index[0] = dst_map_index;
1097 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1099 clib_warning ("cannot delete mapping for eid %U",
1100 format_gid_address, eid);
1105 gid_address_copy (&m_args->eid, eid);
1106 m_args->locator_set_index = old_map->locator_set_index;
1108 /* delete mapping associated from map-cache */
1109 vnet_lisp_map_cache_add_del (m_args, 0);
1111 ls_args->is_add = 0;
1112 ls_args->index = old_map->locator_set_index;
1113 /* delete locator set */
1114 vnet_lisp_add_del_locator_set (ls_args, 0);
1116 /* delete timer associated to the mapping if any */
1117 if (old_map->timer_set)
1118 mapping_delete_timer (lcm, mi);
1120 /* return old mapping index */
1122 res_map_index[0] = mi;
1130 vnet_lisp_clear_all_remote_adjacencies (void)
1133 u32 mi, *map_indices = 0, *map_indexp;
1134 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1135 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1136 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1139 pool_foreach_index (mi, lcm->mapping_pool,
1141 vec_add1 (map_indices, mi);
1145 vec_foreach (map_indexp, map_indices)
1147 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1150 dp_del_fwd_entry (lcm, 0, map_indexp[0]);
1152 dm_args->is_add = 0;
1153 gid_address_copy (&dm_args->eid, &map->eid);
1154 dm_args->locator_set_index = map->locator_set_index;
1156 /* delete mapping associated to fwd entry */
1157 vnet_lisp_map_cache_add_del (dm_args, 0);
1161 ls->index = map->locator_set_index;
1162 /* delete locator set */
1163 rv = vnet_lisp_add_del_locator_set (ls, 0);
1171 vec_free (map_indices);
1176 * Adds adjacency or removes forwarding entry associated to remote mapping.
1177 * Note that adjacencies are not stored, they only result in forwarding entries
1181 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1183 lisp_cp_main_t *lcm = &lisp_control_main;
1184 u32 local_mi, remote_mi = ~0;
1186 if (vnet_lisp_enable_disable_status () == 0)
1188 clib_warning ("LISP is disabled!");
1189 return VNET_API_ERROR_LISP_DISABLED;
1192 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1193 &a->reid, &a->leid);
1194 if (GID_LOOKUP_MISS == remote_mi)
1196 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1197 format_gid_address, &a->reid);
1204 /* TODO 1) check if src/dst 2) once we have src/dst working, use it in
1207 /* check if source eid has an associated mapping. If pitr mode is on,
1208 * just use the pitr's mapping */
1209 local_mi = lcm->lisp_pitr ? lcm->pitr_map_index :
1210 gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->leid);
1212 if (GID_LOOKUP_MISS == local_mi)
1214 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1215 format_gid_address, &a->leid);
1220 /* update forwarding */
1221 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1224 dp_del_fwd_entry (lcm, 0, remote_mi);
1230 vnet_lisp_set_map_request_mode (u8 mode)
1232 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1234 if (vnet_lisp_enable_disable_status () == 0)
1236 clib_warning ("LISP is disabled!");
1237 return VNET_API_ERROR_LISP_DISABLED;
1240 if (mode >= _MR_MODE_MAX)
1242 clib_warning ("Invalid LISP map request mode %d!", mode);
1243 return VNET_API_ERROR_INVALID_ARGUMENT;
1246 lcm->map_request_mode = mode;
1251 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1253 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1254 u32 locator_set_index = ~0;
1258 if (vnet_lisp_enable_disable_status () == 0)
1260 clib_warning ("LISP is disabled!");
1261 return VNET_API_ERROR_LISP_DISABLED;
1264 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1267 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1270 locator_set_index = p[0];
1274 pool_get (lcm->mapping_pool, m);
1275 m->locator_set_index = locator_set_index;
1277 lcm->pitr_map_index = m - lcm->mapping_pool;
1279 /* enable pitr mode */
1284 /* remove pitr mapping */
1285 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1287 /* disable pitr mode */
1294 * Configure Proxy-ETR
1296 * @param ip PETR's IP address
1297 * @param is_add Flag that indicates if this is an addition or removal
1299 * return 0 on success
1302 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1304 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1307 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1310 if (vnet_lisp_enable_disable_status () == 0)
1312 clib_warning ("LISP is disabled!");
1313 return VNET_API_ERROR_LISP_DISABLED;
1316 memset (ls_args, 0, sizeof (*ls_args));
1320 /* Create dummy petr locator-set */
1321 gid_address_from_ip (&loc.address, ip);
1323 loc.state = loc.weight = 1;
1325 ls_args->is_add = 1;
1326 ls_args->index = ~0;
1327 vec_add1 (ls_args->locators, loc);
1328 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1330 /* Add petr mapping */
1331 pool_get (lcm->mapping_pool, m);
1332 m->locator_set_index = ls_index;
1333 lcm->petr_map_index = m - lcm->mapping_pool;
1335 /* Enable use-petr */
1336 lcm->flags |= LISP_FLAG_USE_PETR;
1340 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1342 /* Remove petr locator */
1343 ls_args->is_add = 0;
1344 ls_args->index = m->locator_set_index;
1345 vnet_lisp_add_del_locator_set (ls_args, 0);
1347 /* Remove petr mapping */
1348 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1350 /* Disable use-petr */
1351 lcm->flags &= ~LISP_FLAG_USE_PETR;
1356 /* cleans locator to locator-set data and removes locators not part of
1357 * any locator-set */
1359 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1361 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1362 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1363 for (i = 0; i < vec_len (ls->locator_indices); i++)
1365 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1366 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1368 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1370 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1371 if (ls_indexp[0] == lsi)
1375 /* delete index for removed locator-set */
1376 vec_del1 (ls_indexes[0], j);
1378 /* delete locator if it's part of no locator-set */
1379 if (vec_len (ls_indexes[0]) == 0)
1381 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1382 vec_add1 (to_be_deleted, i);
1388 for (i = 0; i < vec_len (to_be_deleted); i++)
1390 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1391 vec_del1 (ls->locator_indices, loc_indexp[0]);
1393 vec_free (to_be_deleted);
1397 static inline uword *
1398 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1400 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1405 /* find locator-set */
1408 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1419 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1425 ASSERT (ls != NULL);
1426 ASSERT (loc != NULL);
1428 vec_foreach (locit, ls->locator_indices)
1430 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1431 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1432 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1434 clib_warning ("Duplicate locator");
1435 return VNET_API_ERROR_VALUE_EXIST;
1443 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1444 u32 ls_index, u32 loc_id)
1446 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1447 u32 **ls_indexes = NULL;
1449 ASSERT (ls != NULL);
1450 ASSERT (locit != NULL);
1452 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1453 pool_put_index (lcm->locator_pool, locit[0]);
1454 vec_del1 (ls->locator_indices, loc_id);
1455 vec_del1 (ls_indexes[0], ls_index);
1459 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1460 locator_set_t * ls, u32 * ls_result)
1462 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1463 locator_t *loc = NULL, *itloc = NULL;
1464 uword _p = (u32) ~ 0, *p = &_p;
1465 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1471 if (vnet_lisp_enable_disable_status () == 0)
1473 clib_warning ("LISP is disabled!");
1474 return VNET_API_ERROR_LISP_DISABLED;
1477 p = get_locator_set_index (a, p);
1480 clib_warning ("locator-set %v doesn't exist", a->name);
1481 return VNET_API_ERROR_INVALID_ARGUMENT;
1486 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1489 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1491 return VNET_API_ERROR_INVALID_ARGUMENT;
1498 ls_result[0] = p[0];
1500 /* allocate locators */
1501 vec_foreach (itloc, a->locators)
1503 ret = is_locator_in_locator_set (lcm, ls, itloc);
1509 pool_get (lcm->locator_pool, loc);
1511 loc_index = loc - lcm->locator_pool;
1513 vec_add1 (ls->locator_indices, loc_index);
1515 vec_validate (lcm->locator_to_locator_sets, loc_index);
1516 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1518 vec_add1 (ls_indexes[0], p[0]);
1525 itloc = a->locators;
1527 vec_foreach (locit, ls->locator_indices)
1529 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1531 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1533 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1535 if (0 == loc->local &&
1536 !gid_address_cmp (&loc->address, &itloc->address))
1538 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1549 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
1552 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1554 uword _p = (u32) ~ 0, *p = &_p;
1559 if (vnet_lisp_enable_disable_status () == 0)
1561 clib_warning ("LISP is disabled!");
1562 return VNET_API_ERROR_LISP_DISABLED;
1567 p = get_locator_set_index (a, p);
1570 if (p && p[0] != (u32) ~ 0)
1572 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1575 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1580 /* clean locator to locator-set vectors and remove locators if
1581 * they're not part of another locator-set */
1582 clean_locator_to_locator_set (lcm, p[0]);
1584 /* remove locator indices from locator set */
1585 vec_free (ls->locator_indices);
1590 ls_result[0] = p[0];
1592 /* new locator-set */
1595 pool_get (lcm->locator_set_pool, ls);
1596 memset (ls, 0, sizeof (*ls));
1597 ls_index = ls - lcm->locator_set_pool;
1601 ls->name = vec_dup (a->name);
1603 if (!lcm->locator_set_index_by_name)
1604 lcm->locator_set_index_by_name = hash_create_vec (
1612 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
1615 /* mark as local locator-set */
1616 vec_add1 (lcm->local_locator_set_indexes, ls_index);
1618 ls->local = a->local;
1620 ls_result[0] = ls_index;
1623 ret = vnet_lisp_add_del_locator (a, ls, NULL);
1631 p = get_locator_set_index (a, p);
1634 clib_warning ("locator-set %v doesn't exists", a->name);
1638 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1641 clib_warning ("locator-set with index %d doesn't exists", p[0]);
1645 if (lcm->mreq_itr_rlocs == p[0])
1647 clib_warning ("Can't delete the locator-set used to constrain "
1648 "the itr-rlocs in map-requests!");
1652 if (vec_len (lcm->locator_set_to_eids) != 0)
1654 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
1655 if (vec_len (eid_indexes[0]) != 0)
1658 ("Can't delete a locator that supports a mapping!");
1663 /* clean locator to locator-sets data */
1664 clean_locator_to_locator_set (lcm, p[0]);
1670 vec_foreach_index (it, lcm->local_locator_set_indexes)
1672 lsi = vec_elt (lcm->local_locator_set_indexes, it);
1675 vec_del1 (lcm->local_locator_set_indexes, it);
1679 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
1681 vec_free (ls->name);
1682 vec_free (ls->locator_indices);
1683 pool_put (lcm->locator_set_pool, ls);
1689 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
1691 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1693 lcm->rloc_probing = is_enable;
1698 vnet_lisp_map_register_enable_disable (u8 is_enable)
1700 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1702 lcm->map_registering = is_enable;
1707 vnet_lisp_enable_disable (u8 is_enable)
1710 clib_error_t *error = 0;
1711 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1712 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
1714 a->is_en = is_enable;
1715 error = vnet_lisp_gpe_enable_disable (a);
1718 return clib_error_return (0, "failed to %s data-plane!",
1719 a->is_en ? "enable" : "disable");
1724 /* enable all l2 and l3 ifaces */
1727 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
1728 dp_add_del_iface(lcm, vni, 0, 1);
1730 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
1731 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
1737 /* clear interface table */
1738 hash_free (lcm->fwd_entry_by_mapping_index);
1739 pool_free (lcm->fwd_entry_pool);
1742 /* update global flag */
1743 lcm->is_enabled = is_enable;
1749 vnet_lisp_enable_disable_status (void)
1751 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1752 return lcm->is_enabled;
1756 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
1758 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1760 lisp_msmr_t _mr, *mr = &_mr;
1762 if (vnet_lisp_enable_disable_status () == 0)
1764 clib_warning ("LISP is disabled!");
1765 return VNET_API_ERROR_LISP_DISABLED;
1771 if (get_map_resolver (&a->address))
1773 clib_warning ("map-resolver %U already exists!", format_ip_address,
1778 memset (mr, 0, sizeof (*mr));
1779 ip_address_copy (&mr->address, &a->address);
1780 vec_add1 (lcm->map_resolvers, *mr);
1782 if (vec_len (lcm->map_resolvers) == 1)
1783 lcm->do_map_resolver_election = 1;
1787 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
1789 mr = vec_elt_at_index (lcm->map_resolvers, i);
1790 if (!ip_address_cmp (&mr->address, &a->address))
1792 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
1793 lcm->do_map_resolver_election = 1;
1795 vec_del1 (lcm->map_resolvers, i);
1804 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
1806 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1809 if (vnet_lisp_enable_disable_status () == 0)
1811 clib_warning ("LISP is disabled!");
1812 return VNET_API_ERROR_LISP_DISABLED;
1817 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
1820 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
1821 return VNET_API_ERROR_INVALID_ARGUMENT;
1824 lcm->mreq_itr_rlocs = p[0];
1828 lcm->mreq_itr_rlocs = ~0;
1834 /* Statistics (not really errors) */
1835 #define foreach_lisp_cp_lookup_error \
1837 _(MAP_REQUESTS_SENT, "map-request sent")
1839 static char *lisp_cp_lookup_error_strings[] = {
1840 #define _(sym,string) string,
1841 foreach_lisp_cp_lookup_error
1847 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
1848 foreach_lisp_cp_lookup_error
1850 LISP_CP_LOOKUP_N_ERROR,
1851 } lisp_cp_lookup_error_t;
1855 LISP_CP_LOOKUP_NEXT_DROP,
1856 LISP_CP_LOOKUP_N_NEXT,
1857 } lisp_cp_lookup_next_t;
1861 gid_address_t dst_eid;
1862 ip_address_t map_resolver_ip;
1863 } lisp_cp_lookup_trace_t;
1866 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
1868 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1869 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1870 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
1872 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
1873 format_ip_address, &t->map_resolver_ip, format_gid_address,
1879 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
1880 ip_address_t * sloc)
1885 if (vec_len (lcm->map_resolvers) == 0)
1887 clib_warning ("No map-resolver configured");
1891 /* find the first mr ip we have a route to and the ip of the
1892 * iface that has a route to it */
1893 vec_foreach (mrit, lcm->map_resolvers)
1896 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
1898 ip_address_copy (mr_ip, a);
1900 /* also update globals */
1905 clib_warning ("Can't find map-resolver and local interface ip!");
1909 static gid_address_t *
1910 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
1916 ip_interface_address_t *ia = 0;
1917 gid_address_t gid_data, *gid = &gid_data;
1918 gid_address_t *rlocs = 0;
1919 ip_prefix_t *ippref = &gid_address_ippref (gid);
1920 ip_address_t *rloc = &ip_prefix_addr (ippref);
1922 memset (gid, 0, sizeof (gid[0]));
1923 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
1924 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
1926 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
1927 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
1929 /* Add ipv4 locators first TODO sort them */
1932 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1933 loc->sw_if_index, 1 /* unnumbered */,
1935 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
1936 ip_address_set (rloc, addr, IP4);
1937 ip_prefix_len (ippref) = 32;
1938 ip_prefix_normalize (ippref);
1939 vec_add1 (rlocs, gid[0]);
1942 /* Add ipv6 locators */
1943 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1944 loc->sw_if_index, 1 /* unnumbered */,
1946 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
1947 ip_address_set (rloc, addr, IP6);
1948 ip_prefix_len (ippref) = 128;
1949 ip_prefix_normalize (ippref);
1950 vec_add1 (rlocs, gid[0]);
1958 static vlib_buffer_t *
1959 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
1960 ip_address_t * sloc, ip_address_t * rloc,
1961 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
1965 vlib_main_t *vm = lcm->vlib_main;
1967 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
1969 clib_warning ("Can't allocate buffer for Map-Request!");
1973 b = vlib_get_buffer (vm, bi);
1975 /* leave some space for the encap headers */
1976 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
1979 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
1980 1 /* rloc probe */ , nonce_res);
1982 /* push outer ip header */
1983 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
1991 static vlib_buffer_t *
1992 build_encapsulated_map_request (lisp_cp_main_t * lcm,
1993 gid_address_t * seid, gid_address_t * deid,
1994 locator_set_t * loc_set, ip_address_t * mr_ip,
1995 ip_address_t * sloc, u8 is_smr_invoked,
1996 u64 * nonce_res, u32 * bi_res)
2000 gid_address_t *rlocs = 0;
2001 vlib_main_t *vm = lcm->vlib_main;
2003 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2005 clib_warning ("Can't allocate buffer for Map-Request!");
2009 b = vlib_get_buffer (vm, bi);
2011 /* leave some space for the encap headers */
2012 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2015 rlocs = build_itr_rloc_list (lcm, loc_set);
2017 if (MR_MODE_SRC_DST == lcm->map_request_mode
2018 && GID_ADDR_SRC_DST != gid_address_type (deid))
2021 memset (&sd, 0, sizeof (sd));
2022 build_src_dst (&sd, seid, deid);
2023 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2024 0 /* rloc probe */ , nonce_res);
2029 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2030 0 /* rloc probe */ , nonce_res);
2033 /* push ecm: udp-ip-lisp */
2034 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2036 /* push outer ip header */
2037 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2047 reset_pending_mr_counters (pending_map_request_t * r)
2049 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2054 elect_map_resolver (lisp_cp_main_t * lcm)
2058 vec_foreach (mr, lcm->map_resolvers)
2062 ip_address_copy (&lcm->active_map_resolver, &mr->address);
2063 lcm->do_map_resolver_election = 0;
2071 free_map_register_records (mapping_t * maps)
2074 vec_foreach (map, maps) vec_free (map->locators);
2080 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2081 ip_address_t * probed_loc)
2084 locator_t *loc, new;
2085 ip_interface_address_t *ia = 0;
2087 ip_address_t *new_ip = &gid_address_ip (&new.address);
2090 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2092 vec_foreach (li, ls->locator_indices)
2094 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2099 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2100 loc->sw_if_index, 1 /* unnumbered */,
2102 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2104 ip_address_set (new_ip, addr, IP4);
2107 /* Add ipv6 locators */
2108 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2109 loc->sw_if_index, 1 /* unnumbered */,
2111 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2113 ip_address_set (new_ip, addr, IP6);
2117 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2120 vec_add1 (m->locators, new);
2125 build_map_register_record_list (lisp_cp_main_t * lcm)
2127 mapping_t *recs = 0, rec, *m;
2130 pool_foreach(m, lcm->mapping_pool,
2132 /* for now build only local mappings */
2137 add_locators (lcm, &rec, m->locator_set_index, NULL);
2138 vec_add1 (recs, rec);
2146 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2147 lisp_key_type_t key_id, u8 * key,
2148 u16 auth_data_len, u32 msg_len)
2150 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2151 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2153 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2154 (unsigned char *) map_reg_hdr, msg_len, NULL,
2156 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2161 static vlib_buffer_t *
2162 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2163 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2164 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2169 u32 bi, auth_data_len = 0, msg_len = 0;
2170 vlib_main_t *vm = lcm->vlib_main;
2172 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2174 clib_warning ("Can't allocate buffer for Map-Register!");
2178 b = vlib_get_buffer (vm, bi);
2180 /* leave some space for the encap headers */
2181 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2183 auth_data_len = auth_data_len_by_key_id (key_id);
2184 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2185 auth_data_len, nonce_res,
2188 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2191 /* push outer ip header */
2192 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2200 get_egress_map_resolver_ip (lisp_cp_main_t * lcm, ip_address_t * ip)
2203 while (lcm->do_map_resolver_election
2204 | (0 == ip_fib_get_first_egress_ip_for_dst (lcm,
2205 &lcm->active_map_resolver,
2208 if (0 == elect_map_resolver (lcm))
2209 /* all map resolvers are down */
2211 /* restart MR checking by marking all of them up */
2212 vec_foreach (mr, lcm->map_resolvers) mr->is_down = 0;
2219 /* CP output statistics */
2220 #define foreach_lisp_cp_output_error \
2221 _(MAP_REGISTERS_SENT, "map-registers sent") \
2222 _(RLOC_PROBES_SENT, "rloc-probes sent")
2224 static char *lisp_cp_output_error_strings[] = {
2225 #define _(sym,string) string,
2226 foreach_lisp_cp_output_error
2232 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2233 foreach_lisp_cp_output_error
2235 LISP_CP_OUTPUT_N_ERROR,
2236 } lisp_cp_output_error_t;
2239 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2240 vlib_frame_t * from_frame)
2245 /* dummy node used only for statistics */
2247 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2248 .function = lisp_cp_output,
2249 .name = "lisp-cp-output",
2250 .vector_size = sizeof (u32),
2251 .format_trace = format_lisp_cp_input_trace,
2252 .type = VLIB_NODE_TYPE_INTERNAL,
2254 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2255 .error_strings = lisp_cp_output_error_strings,
2257 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2260 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2266 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2267 u32 local_locator_set_index, ip_address_t * sloc,
2268 ip_address_t * rloc)
2275 u32 next_index, *to_next;
2276 gid_address_t *itr_rlocs;
2278 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2279 itr_rlocs = build_itr_rloc_list (lcm, ls);
2281 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2282 vec_free (itr_rlocs);
2286 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2288 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2289 ip4_lookup_node.index : ip6_lookup_node.index;
2291 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2293 /* Enqueue the packet */
2294 to_next = vlib_frame_vector_args (f);
2297 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2299 hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
2304 send_rloc_probes (lisp_cp_main_t * lcm)
2310 u32 si, rloc_probes_sent = 0;
2313 pool_foreach (e, lcm->fwd_entry_pool,
2315 if (vec_len (e->locator_pairs) == 0)
2318 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2321 clib_warning ("internal error: cannot find local eid %U in "
2322 "map-cache!", format_gid_address, &e->leid);
2325 lm = pool_elt_at_index (lcm->mapping_pool, si);
2327 /* get the best (lowest) priority */
2328 lprio = e->locator_pairs[0].priority;
2330 /* send rloc-probe for pair(s) with the best remote locator priority */
2331 vec_foreach (lp, e->locator_pairs)
2333 if (lp->priority != lprio)
2336 /* get first remote locator */
2337 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2344 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2345 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2351 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2353 u32 bi, map_registers_sent = 0;
2358 u32 next_index, *to_next;
2359 ip_address_t *ms = 0;
2360 mapping_t *records, *r, *g;
2362 // TODO: support multiple map servers and do election
2363 if (0 == vec_len (lcm->map_servers))
2366 ms = &lcm->map_servers[0].address;
2368 if (0 == ip_fib_get_first_egress_ip_for_dst (lcm, ms, &sloc))
2370 clib_warning ("no eligible interface address found for %U!",
2371 format_ip_address, &lcm->map_servers[0]);
2375 records = build_map_register_record_list (lcm);
2379 vec_foreach (r, records)
2382 u8 key_id = r->key_id;
2385 continue; /* no secret key -> map-register cannot be sent */
2388 // TODO: group mappings that share common key
2390 b = build_map_register (lcm, &sloc, ms, &nonce, want_map_notif, g,
2396 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2398 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2399 ip4_lookup_node.index : ip6_lookup_node.index;
2401 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2403 /* Enqueue the packet */
2404 to_next = vlib_frame_vector_args (f);
2407 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2408 map_registers_sent++;
2410 hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
2412 free_map_register_records (records);
2414 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2415 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
2416 map_registers_sent);
2421 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
2422 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
2424 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
2425 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
2428 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
2429 gid_address_t * seid, gid_address_t * deid,
2430 u8 is_smr_invoked, u8 is_resend)
2432 u32 next_index, bi = 0, *to_next, map_index;
2436 locator_set_t *loc_set;
2438 pending_map_request_t *pmr, *duplicate_pmr = 0;
2442 /* if there is already a pending request remember it */
2445 pool_foreach(pmr, lcm->pending_map_requests_pool,
2447 if (!gid_address_cmp (&pmr->src, seid)
2448 && !gid_address_cmp (&pmr->dst, deid))
2450 duplicate_pmr = pmr;
2456 if (!is_resend && duplicate_pmr)
2458 /* don't send the request if there is a pending map request already */
2462 /* get locator-set for seid */
2463 if (!lcm->lisp_pitr)
2465 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
2466 if (map_index == ~0)
2468 clib_warning ("No local mapping found in eid-table for %U!",
2469 format_gid_address, seid);
2473 map = pool_elt_at_index (lcm->mapping_pool, map_index);
2478 ("Mapping found for src eid %U is not marked as local!",
2479 format_gid_address, seid);
2482 ls_index = map->locator_set_index;
2486 map_index = lcm->pitr_map_index;
2487 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
2488 ls_index = map->locator_set_index;
2491 /* overwrite locator set if map-request itr-rlocs configured */
2492 if (~0 != lcm->mreq_itr_rlocs)
2494 ls_index = lcm->mreq_itr_rlocs;
2497 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
2499 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
2502 duplicate_pmr->to_be_removed = 1;
2506 /* build the encapsulated map request */
2507 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
2508 &lcm->active_map_resolver,
2509 &sloc, is_smr_invoked, &nonce, &bi);
2514 /* set fib index to default and lookup node */
2515 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2516 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2517 ip4_lookup_node.index : ip6_lookup_node.index;
2519 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2521 /* Enqueue the packet */
2522 to_next = vlib_frame_vector_args (f);
2525 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2528 /* if there is a pending request already update it */
2530 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
2532 /* remove the oldest nonce */
2533 u64 CLIB_UNUSED (tmp), *nonce_del;
2534 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
2535 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
2536 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
2539 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
2540 hash_set (lcm->pending_map_requests_by_nonce, nonce,
2541 duplicate_pmr - lcm->pending_map_requests_pool);
2545 /* add map-request to pending requests table */
2546 pool_get (lcm->pending_map_requests_pool, pmr);
2547 memset (pmr, 0, sizeof (*pmr));
2548 gid_address_copy (&pmr->src, seid);
2549 gid_address_copy (&pmr->dst, deid);
2550 clib_fifo_add1 (pmr->nonces, nonce);
2551 pmr->is_smr_invoked = is_smr_invoked;
2552 reset_pending_mr_counters (pmr);
2553 hash_set (lcm->pending_map_requests_by_nonce, nonce,
2554 pmr - lcm->pending_map_requests_pool);
2561 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
2563 ip4_header_t *ip4 = hdr;
2566 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
2568 ip_address_set (src, &ip4->src_address, IP4);
2569 ip_address_set (dst, &ip4->dst_address, IP4);
2574 ip_address_set (src, &ip6->src_address, IP6);
2575 ip_address_set (dst, &ip6->dst_address, IP6);
2580 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
2584 u32 vni = ~0, table_id = ~0;
2586 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
2587 IP4 ? FIB_PROTOCOL_IP4 :
2593 vnip = hash_get (lcm->vni_by_table_id, table_id);
2597 clib_warning ("vrf %d is not mapped to any vni!", table_id);
2603 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
2609 l2input_main_t *l2im = &l2input_main;
2610 l2_input_config_t *config;
2611 l2_bridge_domain_t *bd_config;
2613 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
2614 config = vec_elt_at_index (l2im->configs, sw_if_index0);
2615 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
2617 vnip = hash_get (lcm->vni_by_bd_id, bd_config->bd_id);
2621 clib_warning ("bridge domain %d is not mapped to any vni!",
2628 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
2629 gid_address_t * src, gid_address_t * dst)
2634 memset (src, 0, sizeof (*src));
2635 memset (dst, 0, sizeof (*dst));
2636 type = vnet_buffer (b)->lisp.overlay_afi;
2638 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
2641 u8 version, preflen;
2643 gid_address_type (src) = GID_ADDR_IP_PREFIX;
2644 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
2646 ip = vlib_buffer_get_current (b);
2647 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
2649 version = gid_address_ip_version (src);
2650 preflen = ip_address_max_len (version);
2651 gid_address_ippref_len (src) = preflen;
2652 gid_address_ippref_len (dst) = preflen;
2654 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
2655 gid_address_vni (dst) = vni;
2656 gid_address_vni (src) = vni;
2658 else if (LISP_AFI_MAC == type)
2660 ethernet_header_t *eh;
2662 eh = vlib_buffer_get_current (b);
2664 gid_address_type (src) = GID_ADDR_MAC;
2665 gid_address_type (dst) = GID_ADDR_MAC;
2666 mac_copy (&gid_address_mac (src), eh->src_address);
2667 mac_copy (&gid_address_mac (dst), eh->dst_address);
2670 vni = lisp_get_vni_from_buffer_eth (lcm, b);
2672 gid_address_vni (dst) = vni;
2673 gid_address_vni (src) = vni;
2678 lisp_cp_lookup_inline (vlib_main_t * vm,
2679 vlib_node_runtime_t * node,
2680 vlib_frame_t * from_frame, int overlay)
2682 u32 *from, *to_next_drop, di, si;
2683 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2684 u32 pkts_mapped = 0;
2685 uword n_left_from, n_left_to_next_drop;
2687 from = vlib_frame_vector_args (from_frame);
2688 n_left_from = from_frame->n_vectors;
2690 while (n_left_from > 0)
2692 vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
2693 to_next_drop, n_left_to_next_drop);
2695 while (n_left_from > 0 && n_left_to_next_drop > 0)
2699 gid_address_t src, dst;
2704 to_next_drop[0] = pi0;
2706 n_left_to_next_drop -= 1;
2708 b0 = vlib_get_buffer (vm, pi0);
2709 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
2710 vnet_buffer (b0)->lisp.overlay_afi = overlay;
2712 /* src/dst eid pair */
2713 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst);
2715 /* if we have remote mapping for destination already in map-chache
2716 add forwarding tunnel directly. If not send a map-request */
2717 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
2721 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
2722 /* send a map-request also in case of negative mapping entry
2723 with corresponding action */
2724 if (m->action == LISP_SEND_MAP_REQUEST)
2726 /* send map-request */
2727 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2728 0 /* is_resend */ );
2733 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
2737 dp_add_fwd_entry_from_mt (si, di);
2743 /* send map-request */
2744 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2745 0 /* is_resend */ );
2749 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2751 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
2754 memset (tr, 0, sizeof (*tr));
2755 gid_address_copy (&tr->dst_eid, &dst);
2756 ip_address_copy (&tr->map_resolver_ip,
2757 &lcm->active_map_resolver);
2759 gid_address_free (&dst);
2760 gid_address_free (&src);
2763 vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
2764 n_left_to_next_drop);
2766 vlib_node_increment_counter (vm, node->node_index,
2767 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
2769 return from_frame->n_vectors;
2773 lisp_cp_lookup_ip4 (vlib_main_t * vm,
2774 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2776 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
2780 lisp_cp_lookup_ip6 (vlib_main_t * vm,
2781 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2783 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
2787 lisp_cp_lookup_l2 (vlib_main_t * vm,
2788 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2790 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
2794 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
2795 .function = lisp_cp_lookup_ip4,
2796 .name = "lisp-cp-lookup-ip4",
2797 .vector_size = sizeof (u32),
2798 .format_trace = format_lisp_cp_lookup_trace,
2799 .type = VLIB_NODE_TYPE_INTERNAL,
2801 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2802 .error_strings = lisp_cp_lookup_error_strings,
2804 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2807 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2813 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
2814 .function = lisp_cp_lookup_ip6,
2815 .name = "lisp-cp-lookup-ip6",
2816 .vector_size = sizeof (u32),
2817 .format_trace = format_lisp_cp_lookup_trace,
2818 .type = VLIB_NODE_TYPE_INTERNAL,
2820 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2821 .error_strings = lisp_cp_lookup_error_strings,
2823 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2826 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2832 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
2833 .function = lisp_cp_lookup_l2,
2834 .name = "lisp-cp-lookup-l2",
2835 .vector_size = sizeof (u32),
2836 .format_trace = format_lisp_cp_lookup_trace,
2837 .type = VLIB_NODE_TYPE_INTERNAL,
2839 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2840 .error_strings = lisp_cp_lookup_error_strings,
2842 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2845 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2850 /* lisp_cp_input statistics */
2851 #define foreach_lisp_cp_input_error \
2853 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
2854 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
2855 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
2856 _(MAP_REPLIES_RECEIVED, "map-replies received")
2858 static char *lisp_cp_input_error_strings[] = {
2859 #define _(sym,string) string,
2860 foreach_lisp_cp_input_error
2866 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
2867 foreach_lisp_cp_input_error
2869 LISP_CP_INPUT_N_ERROR,
2870 } lisp_cp_input_error_t;
2874 gid_address_t dst_eid;
2875 ip4_address_t map_resolver_ip;
2876 } lisp_cp_input_trace_t;
2879 format_lisp_cp_input_trace (u8 * s, va_list * args)
2881 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2882 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2883 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
2884 va_arg (*args, lisp_cp_input_trace_t *);
2886 s = format (s, "LISP-CP-INPUT: TODO");
2891 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
2894 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
2895 memset (adj_args, 0, sizeof (adj_args[0]));
2897 m = pool_elt_at_index (lcm->mapping_pool, mi);
2899 gid_address_copy (&adj_args->reid, &m->eid);
2900 adj_args->is_add = 0;
2901 if (vnet_lisp_add_del_adjacency (adj_args))
2902 clib_warning ("failed to del adjacency!");
2904 vnet_lisp_add_del_mapping (&m->eid, 0, 0, 0, ~0, 0 /* is_add */ ,
2905 0 /* is_static */ , 0);
2906 mapping_delete_timer (lcm, mi);
2910 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
2911 f64 expiration_time)
2914 u64 now = clib_cpu_time_now ();
2915 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
2916 u64 exp_clock_time = now + expiration_time * cpu_cps;
2918 m = pool_elt_at_index (lcm->mapping_pool, mi);
2921 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
2925 map_records_arg_free (map_records_arg_t * a)
2928 vec_foreach (m, a->mappings)
2930 vec_free (m->locators);
2931 gid_address_free (&m->eid);
2938 process_map_reply (map_records_arg_t * a)
2941 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2942 u32 dst_map_index = 0;
2943 pending_map_request_t *pmr;
2947 if (a->is_rloc_probe)
2950 /* Check pending requests table and nonce */
2951 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
2954 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
2957 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
2959 vec_foreach (m, a->mappings)
2961 /* insert/update mappings cache */
2962 vnet_lisp_add_del_mapping (&m->eid, m->locators, m->action,
2963 m->authoritative, m->ttl,
2964 1, 0 /* is_static */ , &dst_map_index);
2966 if (dst_map_index == (u32) ~ 0)
2969 /* try to program forwarding only if mapping saved or updated */
2970 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
2971 memset (adj_args, 0, sizeof (adj_args[0]));
2973 gid_address_copy (&adj_args->leid, &pmr->src);
2974 gid_address_copy (&adj_args->reid, &m->eid);
2975 adj_args->is_add = 1;
2976 if (vnet_lisp_add_del_adjacency (adj_args))
2977 clib_warning ("failed to add adjacency!");
2979 if ((u32) ~ 0 != m->ttl)
2980 mapping_start_expiration_timer (lcm, dst_map_index, m->ttl * 60);
2983 /* remove pending map request entry */
2986 clib_fifo_foreach (noncep, pmr->nonces, ({
2987 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
2991 clib_fifo_free (pmr->nonces);
2992 pool_put (lcm->pending_map_requests_pool, pmr);
2995 map_records_arg_free (a);
3000 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3001 lisp_key_type_t key_id, u8 * key)
3007 auth_data_len = auth_data_len_by_key_id (key_id);
3008 if ((u16) ~ 0 == auth_data_len)
3010 clib_warning ("invalid length for key_id %d!", key_id);
3014 /* save auth data */
3015 vec_validate (auth_data, auth_data_len - 1);
3016 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3018 /* clear auth data */
3019 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3021 /* get hash of the message */
3022 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3023 (unsigned char *) h, msg_len, NULL, NULL);
3025 result = memcmp (code, auth_data, auth_data_len);
3027 vec_free (auth_data);
3033 process_map_notify (map_records_arg_t * a)
3035 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3038 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3041 clib_warning ("No pending map-register entry with nonce %lu!",
3046 map_records_arg_free (a);
3047 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3051 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3055 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3058 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3062 return pool_elt_at_index (lcm->mapping_pool, mi);
3066 * When map-notify is received it is necessary that all EIDs in the record
3067 * list share common key. The key is then used to verify authentication
3068 * data in map-notify message.
3071 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3072 u32 key_id, u8 ** key_out)
3074 u32 i, len = vec_len (maps);
3077 /* get key of the first mapping */
3078 m = get_mapping (lcm, &maps[0].eid);
3082 key_out[0] = m->key;
3084 for (i = 1; i < len; i++)
3086 m = get_mapping (lcm, &maps[i].eid);
3090 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3092 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3100 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3102 locator_t *locators = 0;
3108 /* parse record eid */
3109 for (i = 0; i < count; i++)
3111 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3114 clib_warning ("Failed to parse mapping record!");
3115 vec_foreach (loc, locators) locator_free (loc);
3116 vec_free (locators);
3120 m.locators = locators;
3121 gid_address_copy (&m.eid, &deid);
3122 vec_add1 (a->mappings, m);
3128 static map_records_arg_t *
3129 parse_map_notify (vlib_buffer_t * b)
3132 map_notify_hdr_t *mnotif_hdr;
3133 lisp_key_type_t key_id;
3134 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3137 u16 auth_data_len = 0;
3139 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
3141 memset (a, 0, sizeof (*a));
3142 mnotif_hdr = vlib_buffer_get_current (b);
3143 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3144 memset (&deid, 0, sizeof (deid));
3146 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3147 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3148 auth_data_len = auth_data_len_by_key_id (key_id);
3150 /* advance buffer by authentication data */
3151 vlib_buffer_pull (b, auth_data_len);
3153 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3154 rc = parse_map_records (b, a, record_count);
3157 map_records_arg_free (a);
3161 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3164 map_records_arg_free (a);
3168 /* verify authentication data */
3169 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
3170 - (u8 *) mnotif_hdr, key_id, key))
3172 clib_warning ("Map-notify auth data verification failed for nonce %lu!",
3174 map_records_arg_free (a);
3180 static vlib_buffer_t *
3181 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
3182 ip_address_t * dst, u64 nonce, u8 probe_bit,
3183 mapping_t * records, u16 dst_port, u32 * bi_res)
3187 vlib_main_t *vm = lcm->vlib_main;
3189 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
3191 clib_warning ("Can't allocate buffer for Map-Register!");
3195 b = vlib_get_buffer (vm, bi);
3197 /* leave some space for the encap headers */
3198 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
3200 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
3202 /* push outer ip header */
3203 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst);
3210 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
3211 u8 probe_bit, u64 nonce, u16 dst_port,
3212 ip_address_t * probed_loc)
3218 u32 next_index, *to_next;
3219 mapping_t *records = 0, *m;
3221 m = pool_elt_at_index (lcm->mapping_pool, mi);
3225 vec_add1 (records, m[0]);
3226 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
3227 memset (&src, 0, sizeof (src));
3229 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
3231 clib_warning ("can't find inteface address for %U", format_ip_address,
3236 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
3240 free_map_register_records (records);
3242 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3243 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3244 ip4_lookup_node.index : ip6_lookup_node.index;
3246 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3248 /* Enqueue the packet */
3249 to_next = vlib_frame_vector_args (f);
3252 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3257 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
3259 const i32 start = vnet_buffer (b)->ip.start_of_ip_header;
3260 if (start < 0 && start < -sizeof (b->pre_data))
3266 *ip_hdr = b->data + start;
3267 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
3272 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
3273 lisp_cp_main_t * lcm, vlib_buffer_t * b)
3276 ip_address_t *dst_loc = 0, probed_loc, src_loc;
3278 map_request_hdr_t *mreq_hdr;
3279 gid_address_t src, dst;
3281 u32 i, len = 0, rloc_probe_recv = 0;
3282 gid_address_t *itr_rlocs = 0;
3284 mreq_hdr = vlib_buffer_get_current (b);
3285 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
3288 ("Only SMR Map-Requests and RLOC probe supported for now!");
3292 vlib_buffer_pull (b, sizeof (*mreq_hdr));
3293 nonce = MREQ_NONCE (mreq_hdr);
3296 len = lisp_msg_parse_addr (b, &src);
3300 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
3301 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
3305 /* parse eid records and send SMR-invoked map-requests */
3306 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
3308 memset (&dst, 0, sizeof (dst));
3309 len = lisp_msg_parse_eid_rec (b, &dst);
3312 clib_warning ("Can't parse map-request EID-record");
3316 if (MREQ_SMR (mreq_hdr))
3318 /* send SMR-invoked map-requests */
3319 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
3321 else if (MREQ_RLOC_PROBE (mreq_hdr))
3323 find_ip_header (b, &ip_hdr);
3326 clib_warning ("Cannot find the IP header!");
3330 memset (&m, 0, sizeof (m));
3331 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3333 // TODO: select best locator; for now use the first one
3334 dst_loc = &gid_address_ip (&itr_rlocs[0]);
3336 /* get src/dst IP addresses */
3337 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
3339 // TODO get source port from buffer
3340 u16 src_port = LISP_CONTROL_PORT;
3342 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
3343 src_port, &probed_loc);
3348 vlib_node_increment_counter (vm, node->node_index,
3349 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
3351 vec_free (itr_rlocs);
3354 static map_records_arg_t *
3355 parse_map_reply (vlib_buffer_t * b)
3362 map_reply_hdr_t *mrep_hdr;
3363 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
3364 memset (a, 0, sizeof (*a));
3365 locator_t *locators;
3367 mrep_hdr = vlib_buffer_get_current (b);
3368 a->nonce = MREP_NONCE (mrep_hdr);
3369 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
3370 vlib_buffer_pull (b, sizeof (*mrep_hdr));
3372 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
3374 memset (&m, 0, sizeof (m));
3376 h = vlib_buffer_get_current (b);
3378 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
3379 m.action = MAP_REC_ACTION (h);
3380 m.authoritative = MAP_REC_AUTH (h);
3382 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
3385 clib_warning ("Failed to parse mapping record!");
3386 map_records_arg_free (a);
3390 m.locators = locators;
3391 gid_address_copy (&m.eid, &deid);
3392 vec_add1 (a->mappings, m);
3398 queue_map_reply_for_processing (map_records_arg_t * a)
3400 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
3404 queue_map_notify_for_processing (map_records_arg_t * a)
3406 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
3410 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
3411 vlib_frame_t * from_frame)
3413 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
3414 map_notifies_recv = 0;
3415 lisp_msg_type_e type;
3416 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3417 map_records_arg_t *a;
3419 from = vlib_frame_vector_args (from_frame);
3420 n_left_from = from_frame->n_vectors;
3423 while (n_left_from > 0)
3425 u32 n_left_to_next_drop;
3427 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
3428 to_next_drop, n_left_to_next_drop);
3429 while (n_left_from > 0 && n_left_to_next_drop > 0)
3437 to_next_drop[0] = bi0;
3439 n_left_to_next_drop -= 1;
3441 b0 = vlib_get_buffer (vm, bi0);
3443 type = lisp_msg_type (vlib_buffer_get_current (b0));
3446 case LISP_MAP_REPLY:
3447 a = parse_map_reply (b0);
3450 if (a->is_rloc_probe)
3451 rloc_probe_rep_recv++;
3452 queue_map_reply_for_processing (a);
3455 case LISP_MAP_REQUEST:
3456 process_map_request (vm, node, lcm, b0);
3458 case LISP_MAP_NOTIFY:
3459 a = parse_map_notify (b0);
3462 map_notifies_recv++;
3463 queue_map_notify_for_processing (a);
3467 clib_warning ("Unsupported LISP message type %d", type);
3471 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
3473 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3479 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
3480 n_left_to_next_drop);
3482 vlib_node_increment_counter (vm, node->node_index,
3483 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
3484 rloc_probe_rep_recv);
3485 vlib_node_increment_counter (vm, node->node_index,
3486 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
3488 return from_frame->n_vectors;
3492 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
3493 .function = lisp_cp_input,
3494 .name = "lisp-cp-input",
3495 .vector_size = sizeof (u32),
3496 .format_trace = format_lisp_cp_input_trace,
3497 .type = VLIB_NODE_TYPE_INTERNAL,
3499 .n_errors = LISP_CP_INPUT_N_ERROR,
3500 .error_strings = lisp_cp_input_error_strings,
3502 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
3505 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
3511 lisp_cp_init (vlib_main_t * vm)
3513 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3514 clib_error_t *error = 0;
3516 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
3519 lcm->im4 = &ip4_main;
3520 lcm->im6 = &ip6_main;
3521 lcm->vlib_main = vm;
3522 lcm->vnet_main = vnet_get_main ();
3523 lcm->mreq_itr_rlocs = ~0;
3526 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
3528 gid_dictionary_init (&lcm->mapping_index_by_gid);
3529 lcm->do_map_resolver_election = 1;
3530 lcm->map_request_mode = MR_MODE_DST_ONLY;
3532 /* default vrf mapped to vni 0 */
3533 hash_set (lcm->table_id_by_vni, 0, 0);
3534 hash_set (lcm->vni_by_table_id, 0, 0);
3536 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
3537 lisp_cp_input_node.index, 1 /* is_ip4 */ );
3538 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
3539 lisp_cp_input_node.index, 0 /* is_ip4 */ );
3541 u64 now = clib_cpu_time_now ();
3542 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
3547 send_map_request_thread_fn (void *arg)
3549 map_request_args_t *a = arg;
3550 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3553 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
3555 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
3561 queue_map_request (gid_address_t * seid, gid_address_t * deid,
3562 u8 smr_invoked, u8 is_resend)
3564 map_request_args_t a;
3566 a.is_resend = is_resend;
3567 gid_address_copy (&a.seid, seid);
3568 gid_address_copy (&a.deid, deid);
3569 a.smr_invoked = smr_invoked;
3571 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
3572 (u8 *) & a, sizeof (a));
3577 * Take an action with a pending map request depending on expiration time
3578 * and re-try counters.
3581 update_pending_request (pending_map_request_t * r, f64 dt)
3583 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3586 if (r->time_to_expire - dt < 0)
3587 /* it's time to decide what to do with this pending request */
3589 if (r->retries_num >= NUMBER_OF_RETRIES)
3590 /* too many retries -> assume current map resolver is not available */
3592 mr = get_map_resolver (&lcm->active_map_resolver);
3595 clib_warning ("Map resolver %U not found - probably deleted "
3596 "by the user recently.", format_ip_address,
3597 &lcm->active_map_resolver);
3601 clib_warning ("map resolver %U is unreachable, ignoring",
3602 format_ip_address, &lcm->active_map_resolver);
3604 /* mark current map resolver unavailable so it won't be
3605 * selected next time */
3607 mr->last_update = vlib_time_now (lcm->vlib_main);
3610 reset_pending_mr_counters (r);
3611 elect_map_resolver (lcm);
3613 /* try to find a next eligible map resolver and re-send */
3614 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3620 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3623 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
3627 r->time_to_expire -= dt;
3631 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
3634 pending_map_request_t *pmr;
3635 u32 *to_be_removed = 0, *pmr_index;
3638 pool_foreach (pmr, lcm->pending_map_requests_pool,
3640 if (pmr->to_be_removed)
3642 clib_fifo_foreach (nonce, pmr->nonces, ({
3643 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
3646 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
3651 vec_foreach (pmr_index, to_be_removed)
3652 pool_put_index (lcm->pending_map_requests_by_nonce, pmr_index[0]);
3654 vec_free (to_be_removed);
3658 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
3660 static f64 time_left = RLOC_PROBING_INTERVAL;
3662 if (!lcm->is_enabled || !lcm->rloc_probing)
3668 time_left = RLOC_PROBING_INTERVAL;
3669 send_rloc_probes (lcm);
3674 update_map_register (lisp_cp_main_t * lcm, f64 dt)
3676 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
3677 static u64 mreg_sent_counter = 0;
3679 if (!lcm->is_enabled || !lcm->map_registering)
3685 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
3686 time_left = MAP_REGISTER_INTERVAL;
3689 mreg_sent_counter++;
3690 time_left = QUICK_MAP_REGISTER_INTERVAL;
3692 send_map_register (lcm, 1 /* want map notify */ );
3697 send_map_resolver_service (vlib_main_t * vm,
3698 vlib_node_runtime_t * rt, vlib_frame_t * f)
3702 pending_map_request_t *pmr;
3703 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3707 vlib_process_wait_for_event_or_clock (vm, period);
3709 /* currently no signals are expected - just wait for clock */
3710 (void) vlib_process_get_events (vm, 0);
3713 pool_foreach (pmr, lcm->pending_map_requests_pool,
3715 if (!pmr->to_be_removed)
3716 update_pending_request (pmr, period);
3720 remove_dead_pending_map_requests (lcm);
3722 update_map_register (lcm, period);
3723 update_rloc_probing (lcm, period);
3725 u64 now = clib_cpu_time_now ();
3727 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
3728 if (vec_len (expired) > 0)
3731 vec_foreach (mi, expired)
3733 remove_expired_mapping (lcm, mi[0]);
3735 _vec_len (expired) = 0;
3744 VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
3745 .function = send_map_resolver_service,
3746 .type = VLIB_NODE_TYPE_PROCESS,
3747 .name = "lisp-retry-service",
3748 .process_log2_n_stack_bytes = 16,
3752 VLIB_INIT_FUNCTION (lisp_cp_init);
3755 * fd.io coding-style-patch-verification: ON
3758 * eval: (c-set-style "gnu")