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 is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
999 fib_node_index_t fei;
1000 fib_prefix_t prefix;
1001 fib_entry_flag_t flags;
1003 ip_address_to_fib_prefix (addr, &prefix);
1005 fei = fib_table_lookup (0, &prefix);
1006 flags = fib_entry_get_flags (fei);
1007 return (FIB_ENTRY_FLAG_LOCAL & flags);
1011 * Adds/removes/updates mapping. Does not program forwarding.
1013 * @param eid end-host identifier
1014 * @param rlocs vector of remote locators
1015 * @param action action for negative map-reply
1016 * @param is_add add mapping if non-zero, delete otherwise
1017 * @param res_map_index the map-index that was created/updated/removed. It is
1018 * set to ~0 if no action is taken.
1019 * @param is_static used for distinguishing between statically learned
1020 remote mappings and mappings obtained from MR
1021 * @return return code
1024 vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
1025 u8 authoritative, u32 ttl, u8 is_add, u8 is_static,
1026 u32 * res_map_index)
1028 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1029 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1030 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1031 u32 mi, ls_index = 0, dst_map_index;
1035 if (vnet_lisp_enable_disable_status () == 0)
1037 clib_warning ("LISP is disabled!");
1038 return VNET_API_ERROR_LISP_DISABLED;
1042 res_map_index[0] = ~0;
1044 memset (m_args, 0, sizeof (m_args[0]));
1045 memset (ls_args, 0, sizeof (ls_args[0]));
1047 ls_args->locators = rlocs;
1049 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1050 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1054 /* check if none of the locators match localy configured address */
1055 vec_foreach (loc, rlocs)
1057 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1058 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1060 clib_warning ("RLOC %U matches a local address!",
1061 format_gid_address, &loc->address);
1062 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1066 /* overwrite: if mapping already exists, decide if locators should be
1067 * updated and be done */
1068 if (old_map && gid_address_cmp (&old_map->eid, eid) == 0)
1070 if (!is_static && (old_map->is_static || old_map->local))
1072 /* do not overwrite local or static remote mappings */
1073 clib_warning ("mapping %U rejected due to collision with local "
1074 "or static remote mapping!", format_gid_address,
1079 locator_set_t *old_ls;
1081 /* update mapping attributes */
1082 old_map->action = action;
1083 old_map->authoritative = authoritative;
1086 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1087 old_map->locator_set_index);
1088 if (compare_locators (lcm, old_ls->locator_indices,
1091 /* set locator-set index to overwrite */
1092 ls_args->is_add = 1;
1093 ls_args->index = old_map->locator_set_index;
1094 vnet_lisp_add_del_locator_set (ls_args, 0);
1096 res_map_index[0] = mi;
1102 remove_overlapping_sub_prefixes (lcm, eid, 0 == ls_args->locators);
1104 ls_args->is_add = 1;
1105 ls_args->index = ~0;
1107 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1110 gid_address_copy (&m_args->eid, eid);
1112 m_args->action = action;
1113 m_args->locator_set_index = ls_index;
1114 m_args->is_static = is_static;
1116 vnet_lisp_map_cache_add_del (m_args, &dst_map_index);
1119 res_map_index[0] = dst_map_index;
1124 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1126 clib_warning ("cannot delete mapping for eid %U",
1127 format_gid_address, eid);
1132 gid_address_copy (&m_args->eid, eid);
1133 m_args->locator_set_index = old_map->locator_set_index;
1135 /* delete mapping associated from map-cache */
1136 vnet_lisp_map_cache_add_del (m_args, 0);
1138 ls_args->is_add = 0;
1139 ls_args->index = old_map->locator_set_index;
1140 /* delete locator set */
1141 vnet_lisp_add_del_locator_set (ls_args, 0);
1143 /* delete timer associated to the mapping if any */
1144 if (old_map->timer_set)
1145 mapping_delete_timer (lcm, mi);
1147 /* return old mapping index */
1149 res_map_index[0] = mi;
1157 vnet_lisp_clear_all_remote_adjacencies (void)
1160 u32 mi, *map_indices = 0, *map_indexp;
1161 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1162 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1163 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1166 pool_foreach_index (mi, lcm->mapping_pool,
1168 vec_add1 (map_indices, mi);
1172 vec_foreach (map_indexp, map_indices)
1174 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1177 dp_del_fwd_entry (lcm, 0, map_indexp[0]);
1179 dm_args->is_add = 0;
1180 gid_address_copy (&dm_args->eid, &map->eid);
1181 dm_args->locator_set_index = map->locator_set_index;
1183 /* delete mapping associated to fwd entry */
1184 vnet_lisp_map_cache_add_del (dm_args, 0);
1188 ls->index = map->locator_set_index;
1189 /* delete locator set */
1190 rv = vnet_lisp_add_del_locator_set (ls, 0);
1198 vec_free (map_indices);
1203 * Adds adjacency or removes forwarding entry associated to remote mapping.
1204 * Note that adjacencies are not stored, they only result in forwarding entries
1208 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1210 lisp_cp_main_t *lcm = &lisp_control_main;
1211 u32 local_mi, remote_mi = ~0;
1213 if (vnet_lisp_enable_disable_status () == 0)
1215 clib_warning ("LISP is disabled!");
1216 return VNET_API_ERROR_LISP_DISABLED;
1219 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1220 &a->reid, &a->leid);
1221 if (GID_LOOKUP_MISS == remote_mi)
1223 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1224 format_gid_address, &a->reid);
1231 /* TODO 1) check if src/dst 2) once we have src/dst working, use it in
1234 /* check if source eid has an associated mapping. If pitr mode is on,
1235 * just use the pitr's mapping */
1236 local_mi = lcm->lisp_pitr ? lcm->pitr_map_index :
1237 gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->leid);
1239 if (GID_LOOKUP_MISS == local_mi)
1241 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1242 format_gid_address, &a->leid);
1247 /* update forwarding */
1248 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1251 dp_del_fwd_entry (lcm, 0, remote_mi);
1257 vnet_lisp_set_map_request_mode (u8 mode)
1259 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1261 if (vnet_lisp_enable_disable_status () == 0)
1263 clib_warning ("LISP is disabled!");
1264 return VNET_API_ERROR_LISP_DISABLED;
1267 if (mode >= _MR_MODE_MAX)
1269 clib_warning ("Invalid LISP map request mode %d!", mode);
1270 return VNET_API_ERROR_INVALID_ARGUMENT;
1273 lcm->map_request_mode = mode;
1278 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1280 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1281 u32 locator_set_index = ~0;
1285 if (vnet_lisp_enable_disable_status () == 0)
1287 clib_warning ("LISP is disabled!");
1288 return VNET_API_ERROR_LISP_DISABLED;
1291 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1294 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1297 locator_set_index = p[0];
1301 pool_get (lcm->mapping_pool, m);
1302 m->locator_set_index = locator_set_index;
1305 lcm->pitr_map_index = m - lcm->mapping_pool;
1307 /* enable pitr mode */
1312 /* remove pitr mapping */
1313 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1315 /* disable pitr mode */
1322 * Configure Proxy-ETR
1324 * @param ip PETR's IP address
1325 * @param is_add Flag that indicates if this is an addition or removal
1327 * return 0 on success
1330 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1332 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1335 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1338 if (vnet_lisp_enable_disable_status () == 0)
1340 clib_warning ("LISP is disabled!");
1341 return VNET_API_ERROR_LISP_DISABLED;
1344 memset (ls_args, 0, sizeof (*ls_args));
1348 /* Create dummy petr locator-set */
1349 gid_address_from_ip (&loc.address, ip);
1351 loc.state = loc.weight = 1;
1354 ls_args->is_add = 1;
1355 ls_args->index = ~0;
1356 vec_add1 (ls_args->locators, loc);
1357 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1359 /* Add petr mapping */
1360 pool_get (lcm->mapping_pool, m);
1361 m->locator_set_index = ls_index;
1362 lcm->petr_map_index = m - lcm->mapping_pool;
1364 /* Enable use-petr */
1365 lcm->flags |= LISP_FLAG_USE_PETR;
1369 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1371 /* Remove petr locator */
1372 ls_args->is_add = 0;
1373 ls_args->index = m->locator_set_index;
1374 vnet_lisp_add_del_locator_set (ls_args, 0);
1376 /* Remove petr mapping */
1377 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1379 /* Disable use-petr */
1380 lcm->flags &= ~LISP_FLAG_USE_PETR;
1385 /* cleans locator to locator-set data and removes locators not part of
1386 * any locator-set */
1388 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1390 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1391 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1392 for (i = 0; i < vec_len (ls->locator_indices); i++)
1394 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1395 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1397 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1399 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1400 if (ls_indexp[0] == lsi)
1404 /* delete index for removed locator-set */
1405 vec_del1 (ls_indexes[0], j);
1407 /* delete locator if it's part of no locator-set */
1408 if (vec_len (ls_indexes[0]) == 0)
1410 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1411 vec_add1 (to_be_deleted, i);
1417 for (i = 0; i < vec_len (to_be_deleted); i++)
1419 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1420 vec_del1 (ls->locator_indices, loc_indexp[0]);
1422 vec_free (to_be_deleted);
1426 static inline uword *
1427 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1429 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1434 /* find locator-set */
1437 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1448 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1454 ASSERT (ls != NULL);
1455 ASSERT (loc != NULL);
1457 vec_foreach (locit, ls->locator_indices)
1459 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1460 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1461 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1463 clib_warning ("Duplicate locator");
1464 return VNET_API_ERROR_VALUE_EXIST;
1472 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1473 u32 ls_index, u32 loc_id)
1475 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1476 u32 **ls_indexes = NULL;
1478 ASSERT (ls != NULL);
1479 ASSERT (locit != NULL);
1481 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1482 pool_put_index (lcm->locator_pool, locit[0]);
1483 vec_del1 (ls->locator_indices, loc_id);
1484 vec_del1 (ls_indexes[0], ls_index);
1488 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1489 locator_set_t * ls, u32 * ls_result)
1491 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1492 locator_t *loc = NULL, *itloc = NULL;
1493 uword _p = (u32) ~ 0, *p = &_p;
1494 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1500 if (vnet_lisp_enable_disable_status () == 0)
1502 clib_warning ("LISP is disabled!");
1503 return VNET_API_ERROR_LISP_DISABLED;
1506 p = get_locator_set_index (a, p);
1509 clib_warning ("locator-set %v doesn't exist", a->name);
1510 return VNET_API_ERROR_INVALID_ARGUMENT;
1515 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1518 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1520 return VNET_API_ERROR_INVALID_ARGUMENT;
1527 ls_result[0] = p[0];
1529 /* allocate locators */
1530 vec_foreach (itloc, a->locators)
1532 ret = is_locator_in_locator_set (lcm, ls, itloc);
1538 pool_get (lcm->locator_pool, loc);
1540 loc_index = loc - lcm->locator_pool;
1542 vec_add1 (ls->locator_indices, loc_index);
1544 vec_validate (lcm->locator_to_locator_sets, loc_index);
1545 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1547 vec_add1 (ls_indexes[0], p[0]);
1554 itloc = a->locators;
1556 vec_foreach (locit, ls->locator_indices)
1558 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1560 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1562 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1564 if (0 == loc->local &&
1565 !gid_address_cmp (&loc->address, &itloc->address))
1567 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1578 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
1581 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1583 uword _p = (u32) ~ 0, *p = &_p;
1588 if (vnet_lisp_enable_disable_status () == 0)
1590 clib_warning ("LISP is disabled!");
1591 return VNET_API_ERROR_LISP_DISABLED;
1596 p = get_locator_set_index (a, p);
1599 if (p && p[0] != (u32) ~ 0)
1601 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1604 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1609 /* clean locator to locator-set vectors and remove locators if
1610 * they're not part of another locator-set */
1611 clean_locator_to_locator_set (lcm, p[0]);
1613 /* remove locator indices from locator set */
1614 vec_free (ls->locator_indices);
1619 ls_result[0] = p[0];
1621 /* new locator-set */
1624 pool_get (lcm->locator_set_pool, ls);
1625 memset (ls, 0, sizeof (*ls));
1626 ls_index = ls - lcm->locator_set_pool;
1630 ls->name = vec_dup (a->name);
1632 if (!lcm->locator_set_index_by_name)
1633 lcm->locator_set_index_by_name = hash_create_vec (
1641 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
1644 /* mark as local locator-set */
1645 vec_add1 (lcm->local_locator_set_indexes, ls_index);
1647 ls->local = a->local;
1649 ls_result[0] = ls_index;
1652 ret = vnet_lisp_add_del_locator (a, ls, NULL);
1660 p = get_locator_set_index (a, p);
1663 clib_warning ("locator-set %v doesn't exists", a->name);
1667 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1670 clib_warning ("locator-set with index %d doesn't exists", p[0]);
1674 if (lcm->mreq_itr_rlocs == p[0])
1676 clib_warning ("Can't delete the locator-set used to constrain "
1677 "the itr-rlocs in map-requests!");
1681 if (vec_len (lcm->locator_set_to_eids) != 0)
1683 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
1684 if (vec_len (eid_indexes[0]) != 0)
1687 ("Can't delete a locator that supports a mapping!");
1692 /* clean locator to locator-sets data */
1693 clean_locator_to_locator_set (lcm, p[0]);
1699 vec_foreach_index (it, lcm->local_locator_set_indexes)
1701 lsi = vec_elt (lcm->local_locator_set_indexes, it);
1704 vec_del1 (lcm->local_locator_set_indexes, it);
1708 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
1710 vec_free (ls->name);
1711 vec_free (ls->locator_indices);
1712 pool_put (lcm->locator_set_pool, ls);
1718 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
1720 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1722 lcm->rloc_probing = is_enable;
1727 vnet_lisp_map_register_enable_disable (u8 is_enable)
1729 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1731 lcm->map_registering = is_enable;
1736 vnet_lisp_enable_disable (u8 is_enable)
1739 clib_error_t *error = 0;
1740 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1741 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
1743 a->is_en = is_enable;
1744 error = vnet_lisp_gpe_enable_disable (a);
1747 return clib_error_return (0, "failed to %s data-plane!",
1748 a->is_en ? "enable" : "disable");
1753 /* enable all l2 and l3 ifaces */
1756 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
1757 dp_add_del_iface(lcm, vni, 0, 1);
1759 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
1760 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
1766 /* clear interface table */
1767 hash_free (lcm->fwd_entry_by_mapping_index);
1768 pool_free (lcm->fwd_entry_pool);
1771 /* update global flag */
1772 lcm->is_enabled = is_enable;
1778 vnet_lisp_enable_disable_status (void)
1780 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1781 return lcm->is_enabled;
1785 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
1787 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1789 lisp_msmr_t _mr, *mr = &_mr;
1791 if (vnet_lisp_enable_disable_status () == 0)
1793 clib_warning ("LISP is disabled!");
1794 return VNET_API_ERROR_LISP_DISABLED;
1800 if (get_map_resolver (&a->address))
1802 clib_warning ("map-resolver %U already exists!", format_ip_address,
1807 memset (mr, 0, sizeof (*mr));
1808 ip_address_copy (&mr->address, &a->address);
1809 vec_add1 (lcm->map_resolvers, *mr);
1811 if (vec_len (lcm->map_resolvers) == 1)
1812 lcm->do_map_resolver_election = 1;
1816 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
1818 mr = vec_elt_at_index (lcm->map_resolvers, i);
1819 if (!ip_address_cmp (&mr->address, &a->address))
1821 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
1822 lcm->do_map_resolver_election = 1;
1824 vec_del1 (lcm->map_resolvers, i);
1833 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
1835 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1838 if (vnet_lisp_enable_disable_status () == 0)
1840 clib_warning ("LISP is disabled!");
1841 return VNET_API_ERROR_LISP_DISABLED;
1846 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
1849 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
1850 return VNET_API_ERROR_INVALID_ARGUMENT;
1853 lcm->mreq_itr_rlocs = p[0];
1857 lcm->mreq_itr_rlocs = ~0;
1863 /* Statistics (not really errors) */
1864 #define foreach_lisp_cp_lookup_error \
1866 _(MAP_REQUESTS_SENT, "map-request sent")
1868 static char *lisp_cp_lookup_error_strings[] = {
1869 #define _(sym,string) string,
1870 foreach_lisp_cp_lookup_error
1876 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
1877 foreach_lisp_cp_lookup_error
1879 LISP_CP_LOOKUP_N_ERROR,
1880 } lisp_cp_lookup_error_t;
1884 LISP_CP_LOOKUP_NEXT_DROP,
1885 LISP_CP_LOOKUP_N_NEXT,
1886 } lisp_cp_lookup_next_t;
1890 gid_address_t dst_eid;
1891 ip_address_t map_resolver_ip;
1892 } lisp_cp_lookup_trace_t;
1895 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
1897 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1898 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1899 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
1901 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
1902 format_ip_address, &t->map_resolver_ip, format_gid_address,
1908 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
1909 ip_address_t * sloc)
1914 if (vec_len (lcm->map_resolvers) == 0)
1916 clib_warning ("No map-resolver configured");
1920 /* find the first mr ip we have a route to and the ip of the
1921 * iface that has a route to it */
1922 vec_foreach (mrit, lcm->map_resolvers)
1925 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
1927 ip_address_copy (mr_ip, a);
1929 /* also update globals */
1934 clib_warning ("Can't find map-resolver and local interface ip!");
1938 static gid_address_t *
1939 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
1945 ip_interface_address_t *ia = 0;
1946 gid_address_t gid_data, *gid = &gid_data;
1947 gid_address_t *rlocs = 0;
1948 ip_prefix_t *ippref = &gid_address_ippref (gid);
1949 ip_address_t *rloc = &ip_prefix_addr (ippref);
1951 memset (gid, 0, sizeof (gid[0]));
1952 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
1953 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
1955 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
1956 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
1958 /* Add ipv4 locators first TODO sort them */
1961 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1962 loc->sw_if_index, 1 /* unnumbered */,
1964 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
1965 ip_address_set (rloc, addr, IP4);
1966 ip_prefix_len (ippref) = 32;
1967 ip_prefix_normalize (ippref);
1968 vec_add1 (rlocs, gid[0]);
1971 /* Add ipv6 locators */
1972 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1973 loc->sw_if_index, 1 /* unnumbered */,
1975 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
1976 ip_address_set (rloc, addr, IP6);
1977 ip_prefix_len (ippref) = 128;
1978 ip_prefix_normalize (ippref);
1979 vec_add1 (rlocs, gid[0]);
1987 static vlib_buffer_t *
1988 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
1989 ip_address_t * sloc, ip_address_t * rloc,
1990 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
1994 vlib_main_t *vm = lcm->vlib_main;
1996 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
1998 clib_warning ("Can't allocate buffer for Map-Request!");
2002 b = vlib_get_buffer (vm, bi);
2004 /* leave some space for the encap headers */
2005 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2008 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2009 1 /* rloc probe */ , nonce_res);
2011 /* push outer ip header */
2012 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2020 static vlib_buffer_t *
2021 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2022 gid_address_t * seid, gid_address_t * deid,
2023 locator_set_t * loc_set, ip_address_t * mr_ip,
2024 ip_address_t * sloc, u8 is_smr_invoked,
2025 u64 * nonce_res, u32 * bi_res)
2029 gid_address_t *rlocs = 0;
2030 vlib_main_t *vm = lcm->vlib_main;
2032 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2034 clib_warning ("Can't allocate buffer for Map-Request!");
2038 b = vlib_get_buffer (vm, bi);
2040 /* leave some space for the encap headers */
2041 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2044 rlocs = build_itr_rloc_list (lcm, loc_set);
2046 if (MR_MODE_SRC_DST == lcm->map_request_mode
2047 && GID_ADDR_SRC_DST != gid_address_type (deid))
2050 memset (&sd, 0, sizeof (sd));
2051 build_src_dst (&sd, seid, deid);
2052 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2053 0 /* rloc probe */ , nonce_res);
2058 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2059 0 /* rloc probe */ , nonce_res);
2062 /* push ecm: udp-ip-lisp */
2063 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2065 /* push outer ip header */
2066 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2076 reset_pending_mr_counters (pending_map_request_t * r)
2078 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2083 elect_map_resolver (lisp_cp_main_t * lcm)
2087 vec_foreach (mr, lcm->map_resolvers)
2091 ip_address_copy (&lcm->active_map_resolver, &mr->address);
2092 lcm->do_map_resolver_election = 0;
2100 free_map_register_records (mapping_t * maps)
2103 vec_foreach (map, maps) vec_free (map->locators);
2109 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2110 ip_address_t * probed_loc)
2113 locator_t *loc, new;
2114 ip_interface_address_t *ia = 0;
2116 ip_address_t *new_ip = &gid_address_ip (&new.address);
2119 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2121 vec_foreach (li, ls->locator_indices)
2123 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2128 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2129 loc->sw_if_index, 1 /* unnumbered */,
2131 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2133 ip_address_set (new_ip, addr, IP4);
2136 /* Add ipv6 locators */
2137 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2138 loc->sw_if_index, 1 /* unnumbered */,
2140 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2142 ip_address_set (new_ip, addr, IP6);
2146 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2149 vec_add1 (m->locators, new);
2154 build_map_register_record_list (lisp_cp_main_t * lcm)
2156 mapping_t *recs = 0, rec, *m;
2159 pool_foreach(m, lcm->mapping_pool,
2161 /* for now build only local mappings */
2166 add_locators (lcm, &rec, m->locator_set_index, NULL);
2167 vec_add1 (recs, rec);
2175 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2176 lisp_key_type_t key_id, u8 * key,
2177 u16 auth_data_len, u32 msg_len)
2179 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2180 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2182 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2183 (unsigned char *) map_reg_hdr, msg_len, NULL,
2185 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2190 static vlib_buffer_t *
2191 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2192 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2193 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2198 u32 bi, auth_data_len = 0, msg_len = 0;
2199 vlib_main_t *vm = lcm->vlib_main;
2201 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2203 clib_warning ("Can't allocate buffer for Map-Register!");
2207 b = vlib_get_buffer (vm, bi);
2209 /* leave some space for the encap headers */
2210 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2212 auth_data_len = auth_data_len_by_key_id (key_id);
2213 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2214 auth_data_len, nonce_res,
2217 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2220 /* push outer ip header */
2221 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2229 get_egress_map_resolver_ip (lisp_cp_main_t * lcm, ip_address_t * ip)
2232 while (lcm->do_map_resolver_election
2233 | (0 == ip_fib_get_first_egress_ip_for_dst (lcm,
2234 &lcm->active_map_resolver,
2237 if (0 == elect_map_resolver (lcm))
2238 /* all map resolvers are down */
2240 /* restart MR checking by marking all of them up */
2241 vec_foreach (mr, lcm->map_resolvers) mr->is_down = 0;
2248 /* CP output statistics */
2249 #define foreach_lisp_cp_output_error \
2250 _(MAP_REGISTERS_SENT, "map-registers sent") \
2251 _(RLOC_PROBES_SENT, "rloc-probes sent")
2253 static char *lisp_cp_output_error_strings[] = {
2254 #define _(sym,string) string,
2255 foreach_lisp_cp_output_error
2261 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2262 foreach_lisp_cp_output_error
2264 LISP_CP_OUTPUT_N_ERROR,
2265 } lisp_cp_output_error_t;
2268 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2269 vlib_frame_t * from_frame)
2274 /* dummy node used only for statistics */
2276 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2277 .function = lisp_cp_output,
2278 .name = "lisp-cp-output",
2279 .vector_size = sizeof (u32),
2280 .format_trace = format_lisp_cp_input_trace,
2281 .type = VLIB_NODE_TYPE_INTERNAL,
2283 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2284 .error_strings = lisp_cp_output_error_strings,
2286 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2289 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2295 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2296 u32 local_locator_set_index, ip_address_t * sloc,
2297 ip_address_t * rloc)
2304 u32 next_index, *to_next;
2305 gid_address_t *itr_rlocs;
2307 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2308 itr_rlocs = build_itr_rloc_list (lcm, ls);
2310 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2311 vec_free (itr_rlocs);
2315 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2317 next_index = (ip_addr_version (rloc) == IP4) ?
2318 ip4_lookup_node.index : ip6_lookup_node.index;
2320 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2322 /* Enqueue the packet */
2323 to_next = vlib_frame_vector_args (f);
2326 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2328 hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
2333 send_rloc_probes (lisp_cp_main_t * lcm)
2339 u32 si, rloc_probes_sent = 0;
2342 pool_foreach (e, lcm->fwd_entry_pool,
2344 if (vec_len (e->locator_pairs) == 0)
2347 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2350 clib_warning ("internal error: cannot find local eid %U in "
2351 "map-cache!", format_gid_address, &e->leid);
2354 lm = pool_elt_at_index (lcm->mapping_pool, si);
2356 /* get the best (lowest) priority */
2357 lprio = e->locator_pairs[0].priority;
2359 /* send rloc-probe for pair(s) with the best remote locator priority */
2360 vec_foreach (lp, e->locator_pairs)
2362 if (lp->priority != lprio)
2365 /* get first remote locator */
2366 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2373 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2374 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2380 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2382 u32 bi, map_registers_sent = 0;
2387 u32 next_index, *to_next;
2388 ip_address_t *ms = 0;
2389 mapping_t *records, *r, *g;
2391 // TODO: support multiple map servers and do election
2392 if (0 == vec_len (lcm->map_servers))
2395 ms = &lcm->map_servers[0].address;
2397 if (0 == ip_fib_get_first_egress_ip_for_dst (lcm, ms, &sloc))
2399 clib_warning ("no eligible interface address found for %U!",
2400 format_ip_address, &lcm->map_servers[0]);
2404 records = build_map_register_record_list (lcm);
2408 vec_foreach (r, records)
2411 u8 key_id = r->key_id;
2414 continue; /* no secret key -> map-register cannot be sent */
2417 // TODO: group mappings that share common key
2419 b = build_map_register (lcm, &sloc, ms, &nonce, want_map_notif, g,
2425 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2427 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2428 ip4_lookup_node.index : ip6_lookup_node.index;
2430 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2432 /* Enqueue the packet */
2433 to_next = vlib_frame_vector_args (f);
2436 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2437 map_registers_sent++;
2439 hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
2441 free_map_register_records (records);
2443 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2444 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
2445 map_registers_sent);
2450 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
2451 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
2453 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
2454 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
2457 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
2458 gid_address_t * seid, gid_address_t * deid,
2459 u8 is_smr_invoked, u8 is_resend)
2461 u32 next_index, bi = 0, *to_next, map_index;
2465 locator_set_t *loc_set;
2467 pending_map_request_t *pmr, *duplicate_pmr = 0;
2471 /* if there is already a pending request remember it */
2474 pool_foreach(pmr, lcm->pending_map_requests_pool,
2476 if (!gid_address_cmp (&pmr->src, seid)
2477 && !gid_address_cmp (&pmr->dst, deid))
2479 duplicate_pmr = pmr;
2485 if (!is_resend && duplicate_pmr)
2487 /* don't send the request if there is a pending map request already */
2491 /* get locator-set for seid */
2492 if (!lcm->lisp_pitr)
2494 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
2495 if (map_index == ~0)
2497 clib_warning ("No local mapping found in eid-table for %U!",
2498 format_gid_address, seid);
2502 map = pool_elt_at_index (lcm->mapping_pool, map_index);
2507 ("Mapping found for src eid %U is not marked as local!",
2508 format_gid_address, seid);
2511 ls_index = map->locator_set_index;
2515 map_index = lcm->pitr_map_index;
2516 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
2517 ls_index = map->locator_set_index;
2520 /* overwrite locator set if map-request itr-rlocs configured */
2521 if (~0 != lcm->mreq_itr_rlocs)
2523 ls_index = lcm->mreq_itr_rlocs;
2526 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
2528 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
2531 duplicate_pmr->to_be_removed = 1;
2535 /* build the encapsulated map request */
2536 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
2537 &lcm->active_map_resolver,
2538 &sloc, is_smr_invoked, &nonce, &bi);
2543 /* set fib index to default and lookup node */
2544 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2545 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2546 ip4_lookup_node.index : ip6_lookup_node.index;
2548 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2550 /* Enqueue the packet */
2551 to_next = vlib_frame_vector_args (f);
2554 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2557 /* if there is a pending request already update it */
2559 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
2561 /* remove the oldest nonce */
2562 u64 CLIB_UNUSED (tmp), *nonce_del;
2563 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
2564 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
2565 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
2568 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
2569 hash_set (lcm->pending_map_requests_by_nonce, nonce,
2570 duplicate_pmr - lcm->pending_map_requests_pool);
2574 /* add map-request to pending requests table */
2575 pool_get (lcm->pending_map_requests_pool, pmr);
2576 memset (pmr, 0, sizeof (*pmr));
2577 gid_address_copy (&pmr->src, seid);
2578 gid_address_copy (&pmr->dst, deid);
2579 clib_fifo_add1 (pmr->nonces, nonce);
2580 pmr->is_smr_invoked = is_smr_invoked;
2581 reset_pending_mr_counters (pmr);
2582 hash_set (lcm->pending_map_requests_by_nonce, nonce,
2583 pmr - lcm->pending_map_requests_pool);
2590 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
2592 ip4_header_t *ip4 = hdr;
2595 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
2597 ip_address_set (src, &ip4->src_address, IP4);
2598 ip_address_set (dst, &ip4->dst_address, IP4);
2603 ip_address_set (src, &ip6->src_address, IP6);
2604 ip_address_set (dst, &ip6->dst_address, IP6);
2609 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
2613 u32 vni = ~0, table_id = ~0;
2615 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
2616 IP4 ? FIB_PROTOCOL_IP4 :
2622 vnip = hash_get (lcm->vni_by_table_id, table_id);
2626 clib_warning ("vrf %d is not mapped to any vni!", table_id);
2632 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
2638 l2input_main_t *l2im = &l2input_main;
2639 l2_input_config_t *config;
2640 l2_bridge_domain_t *bd_config;
2642 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
2643 config = vec_elt_at_index (l2im->configs, sw_if_index0);
2644 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
2646 vnip = hash_get (lcm->vni_by_bd_id, bd_config->bd_id);
2650 clib_warning ("bridge domain %d is not mapped to any vni!",
2657 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
2658 gid_address_t * src, gid_address_t * dst)
2663 memset (src, 0, sizeof (*src));
2664 memset (dst, 0, sizeof (*dst));
2665 type = vnet_buffer (b)->lisp.overlay_afi;
2667 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
2670 u8 version, preflen;
2672 gid_address_type (src) = GID_ADDR_IP_PREFIX;
2673 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
2675 ip = vlib_buffer_get_current (b);
2676 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
2678 version = gid_address_ip_version (src);
2679 preflen = ip_address_max_len (version);
2680 gid_address_ippref_len (src) = preflen;
2681 gid_address_ippref_len (dst) = preflen;
2683 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
2684 gid_address_vni (dst) = vni;
2685 gid_address_vni (src) = vni;
2687 else if (LISP_AFI_MAC == type)
2689 ethernet_header_t *eh;
2691 eh = vlib_buffer_get_current (b);
2693 gid_address_type (src) = GID_ADDR_MAC;
2694 gid_address_type (dst) = GID_ADDR_MAC;
2695 mac_copy (&gid_address_mac (src), eh->src_address);
2696 mac_copy (&gid_address_mac (dst), eh->dst_address);
2699 vni = lisp_get_vni_from_buffer_eth (lcm, b);
2701 gid_address_vni (dst) = vni;
2702 gid_address_vni (src) = vni;
2704 else if (LISP_AFI_LCAF == type)
2706 /* Eventually extend this to support NSH and other */
2712 lisp_cp_lookup_inline (vlib_main_t * vm,
2713 vlib_node_runtime_t * node,
2714 vlib_frame_t * from_frame, int overlay)
2716 u32 *from, *to_next_drop, di, si;
2717 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2718 u32 pkts_mapped = 0;
2719 uword n_left_from, n_left_to_next_drop;
2721 from = vlib_frame_vector_args (from_frame);
2722 n_left_from = from_frame->n_vectors;
2724 while (n_left_from > 0)
2726 vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
2727 to_next_drop, n_left_to_next_drop);
2729 while (n_left_from > 0 && n_left_to_next_drop > 0)
2733 gid_address_t src, dst;
2738 to_next_drop[0] = pi0;
2740 n_left_to_next_drop -= 1;
2742 b0 = vlib_get_buffer (vm, pi0);
2743 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
2744 vnet_buffer (b0)->lisp.overlay_afi = overlay;
2746 /* src/dst eid pair */
2747 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst);
2749 /* if we have remote mapping for destination already in map-chache
2750 add forwarding tunnel directly. If not send a map-request */
2751 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
2755 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
2756 /* send a map-request also in case of negative mapping entry
2757 with corresponding action */
2758 if (m->action == LISP_SEND_MAP_REQUEST)
2760 /* send map-request */
2761 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2762 0 /* is_resend */ );
2767 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
2771 dp_add_fwd_entry_from_mt (si, di);
2777 /* send map-request */
2778 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2779 0 /* is_resend */ );
2783 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2785 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
2788 memset (tr, 0, sizeof (*tr));
2789 gid_address_copy (&tr->dst_eid, &dst);
2790 ip_address_copy (&tr->map_resolver_ip,
2791 &lcm->active_map_resolver);
2793 gid_address_free (&dst);
2794 gid_address_free (&src);
2797 vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
2798 n_left_to_next_drop);
2800 vlib_node_increment_counter (vm, node->node_index,
2801 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
2803 return from_frame->n_vectors;
2807 lisp_cp_lookup_ip4 (vlib_main_t * vm,
2808 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2810 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
2814 lisp_cp_lookup_ip6 (vlib_main_t * vm,
2815 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2817 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
2821 lisp_cp_lookup_l2 (vlib_main_t * vm,
2822 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2824 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
2828 lisp_cp_lookup_nsh (vlib_main_t * vm,
2829 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2831 /* TODO decide if NSH should be propagated as LCAF or not */
2832 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
2836 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
2837 .function = lisp_cp_lookup_ip4,
2838 .name = "lisp-cp-lookup-ip4",
2839 .vector_size = sizeof (u32),
2840 .format_trace = format_lisp_cp_lookup_trace,
2841 .type = VLIB_NODE_TYPE_INTERNAL,
2843 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2844 .error_strings = lisp_cp_lookup_error_strings,
2846 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2849 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2855 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
2856 .function = lisp_cp_lookup_ip6,
2857 .name = "lisp-cp-lookup-ip6",
2858 .vector_size = sizeof (u32),
2859 .format_trace = format_lisp_cp_lookup_trace,
2860 .type = VLIB_NODE_TYPE_INTERNAL,
2862 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2863 .error_strings = lisp_cp_lookup_error_strings,
2865 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2868 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2874 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
2875 .function = lisp_cp_lookup_l2,
2876 .name = "lisp-cp-lookup-l2",
2877 .vector_size = sizeof (u32),
2878 .format_trace = format_lisp_cp_lookup_trace,
2879 .type = VLIB_NODE_TYPE_INTERNAL,
2881 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2882 .error_strings = lisp_cp_lookup_error_strings,
2884 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2887 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2893 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
2894 .function = lisp_cp_lookup_nsh,
2895 .name = "lisp-cp-lookup-nsh",
2896 .vector_size = sizeof (u32),
2897 .format_trace = format_lisp_cp_lookup_trace,
2898 .type = VLIB_NODE_TYPE_INTERNAL,
2900 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2901 .error_strings = lisp_cp_lookup_error_strings,
2903 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2906 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2911 /* lisp_cp_input statistics */
2912 #define foreach_lisp_cp_input_error \
2914 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
2915 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
2916 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
2917 _(MAP_REPLIES_RECEIVED, "map-replies received")
2919 static char *lisp_cp_input_error_strings[] = {
2920 #define _(sym,string) string,
2921 foreach_lisp_cp_input_error
2927 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
2928 foreach_lisp_cp_input_error
2930 LISP_CP_INPUT_N_ERROR,
2931 } lisp_cp_input_error_t;
2935 gid_address_t dst_eid;
2936 ip4_address_t map_resolver_ip;
2937 } lisp_cp_input_trace_t;
2940 format_lisp_cp_input_trace (u8 * s, va_list * args)
2942 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2943 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2944 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
2945 va_arg (*args, lisp_cp_input_trace_t *);
2947 s = format (s, "LISP-CP-INPUT: TODO");
2952 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
2955 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
2956 memset (adj_args, 0, sizeof (adj_args[0]));
2958 m = pool_elt_at_index (lcm->mapping_pool, mi);
2960 gid_address_copy (&adj_args->reid, &m->eid);
2961 adj_args->is_add = 0;
2962 if (vnet_lisp_add_del_adjacency (adj_args))
2963 clib_warning ("failed to del adjacency!");
2965 vnet_lisp_add_del_mapping (&m->eid, 0, 0, 0, ~0, 0 /* is_add */ ,
2966 0 /* is_static */ , 0);
2967 mapping_delete_timer (lcm, mi);
2971 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
2972 f64 expiration_time)
2975 u64 now = clib_cpu_time_now ();
2976 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
2977 u64 exp_clock_time = now + expiration_time * cpu_cps;
2979 m = pool_elt_at_index (lcm->mapping_pool, mi);
2982 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
2986 map_records_arg_free (map_records_arg_t * a)
2989 vec_foreach (m, a->mappings)
2991 vec_free (m->locators);
2992 gid_address_free (&m->eid);
2999 process_map_reply (map_records_arg_t * a)
3002 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3003 u32 dst_map_index = 0;
3004 pending_map_request_t *pmr;
3008 if (a->is_rloc_probe)
3011 /* Check pending requests table and nonce */
3012 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3015 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3018 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3020 vec_foreach (m, a->mappings)
3022 /* insert/update mappings cache */
3023 vnet_lisp_add_del_mapping (&m->eid, m->locators, m->action,
3024 m->authoritative, m->ttl,
3025 1, 0 /* is_static */ , &dst_map_index);
3027 if (dst_map_index == (u32) ~ 0)
3030 /* try to program forwarding only if mapping saved or updated */
3031 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3032 memset (adj_args, 0, sizeof (adj_args[0]));
3034 gid_address_copy (&adj_args->leid, &pmr->src);
3035 gid_address_copy (&adj_args->reid, &m->eid);
3036 adj_args->is_add = 1;
3037 if (vnet_lisp_add_del_adjacency (adj_args))
3038 clib_warning ("failed to add adjacency!");
3040 if ((u32) ~ 0 != m->ttl)
3041 mapping_start_expiration_timer (lcm, dst_map_index, m->ttl * 60);
3044 /* remove pending map request entry */
3047 clib_fifo_foreach (noncep, pmr->nonces, ({
3048 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3052 clib_fifo_free (pmr->nonces);
3053 pool_put (lcm->pending_map_requests_pool, pmr);
3056 map_records_arg_free (a);
3061 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3062 lisp_key_type_t key_id, u8 * key)
3068 auth_data_len = auth_data_len_by_key_id (key_id);
3069 if ((u16) ~ 0 == auth_data_len)
3071 clib_warning ("invalid length for key_id %d!", key_id);
3075 /* save auth data */
3076 vec_validate (auth_data, auth_data_len - 1);
3077 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3079 /* clear auth data */
3080 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3082 /* get hash of the message */
3083 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3084 (unsigned char *) h, msg_len, NULL, NULL);
3086 result = memcmp (code, auth_data, auth_data_len);
3088 vec_free (auth_data);
3094 process_map_notify (map_records_arg_t * a)
3096 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3099 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3102 clib_warning ("No pending map-register entry with nonce %lu!",
3107 map_records_arg_free (a);
3108 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3112 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3116 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3119 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3123 return pool_elt_at_index (lcm->mapping_pool, mi);
3127 * When map-notify is received it is necessary that all EIDs in the record
3128 * list share common key. The key is then used to verify authentication
3129 * data in map-notify message.
3132 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3133 u32 key_id, u8 ** key_out)
3135 u32 i, len = vec_len (maps);
3138 /* get key of the first mapping */
3139 m = get_mapping (lcm, &maps[0].eid);
3143 key_out[0] = m->key;
3145 for (i = 1; i < len; i++)
3147 m = get_mapping (lcm, &maps[i].eid);
3151 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3153 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3161 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3163 locator_t *locators = 0;
3169 /* parse record eid */
3170 for (i = 0; i < count; i++)
3172 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3175 clib_warning ("Failed to parse mapping record!");
3176 vec_foreach (loc, locators) locator_free (loc);
3177 vec_free (locators);
3181 m.locators = locators;
3182 gid_address_copy (&m.eid, &deid);
3183 vec_add1 (a->mappings, m);
3189 static map_records_arg_t *
3190 parse_map_notify (vlib_buffer_t * b)
3193 map_notify_hdr_t *mnotif_hdr;
3194 lisp_key_type_t key_id;
3195 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3198 u16 auth_data_len = 0;
3200 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
3202 memset (a, 0, sizeof (*a));
3203 mnotif_hdr = vlib_buffer_get_current (b);
3204 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3205 memset (&deid, 0, sizeof (deid));
3207 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3208 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3209 auth_data_len = auth_data_len_by_key_id (key_id);
3211 /* advance buffer by authentication data */
3212 vlib_buffer_pull (b, auth_data_len);
3214 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3215 rc = parse_map_records (b, a, record_count);
3218 map_records_arg_free (a);
3222 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3225 map_records_arg_free (a);
3229 /* verify authentication data */
3230 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
3231 - (u8 *) mnotif_hdr, key_id, key))
3233 clib_warning ("Map-notify auth data verification failed for nonce %lu!",
3235 map_records_arg_free (a);
3241 static vlib_buffer_t *
3242 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
3243 ip_address_t * dst, u64 nonce, u8 probe_bit,
3244 mapping_t * records, u16 dst_port, u32 * bi_res)
3248 vlib_main_t *vm = lcm->vlib_main;
3250 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
3252 clib_warning ("Can't allocate buffer for Map-Register!");
3256 b = vlib_get_buffer (vm, bi);
3258 /* leave some space for the encap headers */
3259 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
3261 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
3263 /* push outer ip header */
3264 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst);
3271 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
3272 u8 probe_bit, u64 nonce, u16 dst_port,
3273 ip_address_t * probed_loc)
3279 u32 next_index, *to_next;
3280 mapping_t *records = 0, *m;
3282 m = pool_elt_at_index (lcm->mapping_pool, mi);
3286 vec_add1 (records, m[0]);
3287 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
3288 memset (&src, 0, sizeof (src));
3290 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
3292 clib_warning ("can't find inteface address for %U", format_ip_address,
3297 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
3301 free_map_register_records (records);
3303 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3304 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3305 ip4_lookup_node.index : ip6_lookup_node.index;
3307 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3309 /* Enqueue the packet */
3310 to_next = vlib_frame_vector_args (f);
3313 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3318 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
3320 const i32 start = vnet_buffer (b)->ip.start_of_ip_header;
3321 if (start < 0 && start < -sizeof (b->pre_data))
3327 *ip_hdr = b->data + start;
3328 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
3333 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
3334 lisp_cp_main_t * lcm, vlib_buffer_t * b)
3337 ip_address_t *dst_loc = 0, probed_loc, src_loc;
3339 map_request_hdr_t *mreq_hdr;
3340 gid_address_t src, dst;
3342 u32 i, len = 0, rloc_probe_recv = 0;
3343 gid_address_t *itr_rlocs = 0;
3345 mreq_hdr = vlib_buffer_get_current (b);
3346 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
3349 ("Only SMR Map-Requests and RLOC probe supported for now!");
3353 vlib_buffer_pull (b, sizeof (*mreq_hdr));
3354 nonce = MREQ_NONCE (mreq_hdr);
3357 len = lisp_msg_parse_addr (b, &src);
3361 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
3362 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
3366 /* parse eid records and send SMR-invoked map-requests */
3367 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
3369 memset (&dst, 0, sizeof (dst));
3370 len = lisp_msg_parse_eid_rec (b, &dst);
3373 clib_warning ("Can't parse map-request EID-record");
3377 if (MREQ_SMR (mreq_hdr))
3379 /* send SMR-invoked map-requests */
3380 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
3382 else if (MREQ_RLOC_PROBE (mreq_hdr))
3384 find_ip_header (b, &ip_hdr);
3387 clib_warning ("Cannot find the IP header!");
3391 memset (&m, 0, sizeof (m));
3392 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3394 // TODO: select best locator; for now use the first one
3395 dst_loc = &gid_address_ip (&itr_rlocs[0]);
3397 /* get src/dst IP addresses */
3398 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
3400 // TODO get source port from buffer
3401 u16 src_port = LISP_CONTROL_PORT;
3403 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
3404 src_port, &probed_loc);
3409 vlib_node_increment_counter (vm, node->node_index,
3410 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
3412 vec_free (itr_rlocs);
3415 static map_records_arg_t *
3416 parse_map_reply (vlib_buffer_t * b)
3423 map_reply_hdr_t *mrep_hdr;
3424 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
3425 memset (a, 0, sizeof (*a));
3426 locator_t *locators;
3428 mrep_hdr = vlib_buffer_get_current (b);
3429 a->nonce = MREP_NONCE (mrep_hdr);
3430 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
3431 vlib_buffer_pull (b, sizeof (*mrep_hdr));
3433 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
3435 memset (&m, 0, sizeof (m));
3437 h = vlib_buffer_get_current (b);
3439 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
3440 m.action = MAP_REC_ACTION (h);
3441 m.authoritative = MAP_REC_AUTH (h);
3443 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
3446 clib_warning ("Failed to parse mapping record!");
3447 map_records_arg_free (a);
3451 m.locators = locators;
3452 gid_address_copy (&m.eid, &deid);
3453 vec_add1 (a->mappings, m);
3459 queue_map_reply_for_processing (map_records_arg_t * a)
3461 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
3465 queue_map_notify_for_processing (map_records_arg_t * a)
3467 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
3471 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
3472 vlib_frame_t * from_frame)
3474 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
3475 map_notifies_recv = 0;
3476 lisp_msg_type_e type;
3477 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3478 map_records_arg_t *a;
3480 from = vlib_frame_vector_args (from_frame);
3481 n_left_from = from_frame->n_vectors;
3484 while (n_left_from > 0)
3486 u32 n_left_to_next_drop;
3488 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
3489 to_next_drop, n_left_to_next_drop);
3490 while (n_left_from > 0 && n_left_to_next_drop > 0)
3498 to_next_drop[0] = bi0;
3500 n_left_to_next_drop -= 1;
3502 b0 = vlib_get_buffer (vm, bi0);
3504 type = lisp_msg_type (vlib_buffer_get_current (b0));
3507 case LISP_MAP_REPLY:
3508 a = parse_map_reply (b0);
3511 if (a->is_rloc_probe)
3512 rloc_probe_rep_recv++;
3513 queue_map_reply_for_processing (a);
3516 case LISP_MAP_REQUEST:
3517 process_map_request (vm, node, lcm, b0);
3519 case LISP_MAP_NOTIFY:
3520 a = parse_map_notify (b0);
3523 map_notifies_recv++;
3524 queue_map_notify_for_processing (a);
3528 clib_warning ("Unsupported LISP message type %d", type);
3532 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
3534 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3540 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
3541 n_left_to_next_drop);
3543 vlib_node_increment_counter (vm, node->node_index,
3544 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
3545 rloc_probe_rep_recv);
3546 vlib_node_increment_counter (vm, node->node_index,
3547 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
3549 return from_frame->n_vectors;
3553 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
3554 .function = lisp_cp_input,
3555 .name = "lisp-cp-input",
3556 .vector_size = sizeof (u32),
3557 .format_trace = format_lisp_cp_input_trace,
3558 .type = VLIB_NODE_TYPE_INTERNAL,
3560 .n_errors = LISP_CP_INPUT_N_ERROR,
3561 .error_strings = lisp_cp_input_error_strings,
3563 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
3566 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
3572 lisp_cp_init (vlib_main_t * vm)
3574 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3575 clib_error_t *error = 0;
3577 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
3580 lcm->im4 = &ip4_main;
3581 lcm->im6 = &ip6_main;
3582 lcm->vlib_main = vm;
3583 lcm->vnet_main = vnet_get_main ();
3584 lcm->mreq_itr_rlocs = ~0;
3587 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
3589 gid_dictionary_init (&lcm->mapping_index_by_gid);
3590 lcm->do_map_resolver_election = 1;
3591 lcm->map_request_mode = MR_MODE_DST_ONLY;
3593 /* default vrf mapped to vni 0 */
3594 hash_set (lcm->table_id_by_vni, 0, 0);
3595 hash_set (lcm->vni_by_table_id, 0, 0);
3597 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
3598 lisp_cp_input_node.index, 1 /* is_ip4 */ );
3599 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
3600 lisp_cp_input_node.index, 0 /* is_ip4 */ );
3602 u64 now = clib_cpu_time_now ();
3603 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
3608 send_map_request_thread_fn (void *arg)
3610 map_request_args_t *a = arg;
3611 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3614 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
3616 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
3622 queue_map_request (gid_address_t * seid, gid_address_t * deid,
3623 u8 smr_invoked, u8 is_resend)
3625 map_request_args_t a;
3627 a.is_resend = is_resend;
3628 gid_address_copy (&a.seid, seid);
3629 gid_address_copy (&a.deid, deid);
3630 a.smr_invoked = smr_invoked;
3632 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
3633 (u8 *) & a, sizeof (a));
3638 * Take an action with a pending map request depending on expiration time
3639 * and re-try counters.
3642 update_pending_request (pending_map_request_t * r, f64 dt)
3644 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3647 if (r->time_to_expire - dt < 0)
3648 /* it's time to decide what to do with this pending request */
3650 if (r->retries_num >= NUMBER_OF_RETRIES)
3651 /* too many retries -> assume current map resolver is not available */
3653 mr = get_map_resolver (&lcm->active_map_resolver);
3656 clib_warning ("Map resolver %U not found - probably deleted "
3657 "by the user recently.", format_ip_address,
3658 &lcm->active_map_resolver);
3662 clib_warning ("map resolver %U is unreachable, ignoring",
3663 format_ip_address, &lcm->active_map_resolver);
3665 /* mark current map resolver unavailable so it won't be
3666 * selected next time */
3668 mr->last_update = vlib_time_now (lcm->vlib_main);
3671 reset_pending_mr_counters (r);
3672 elect_map_resolver (lcm);
3674 /* try to find a next eligible map resolver and re-send */
3675 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3681 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3684 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
3688 r->time_to_expire -= dt;
3692 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
3695 pending_map_request_t *pmr;
3696 u32 *to_be_removed = 0, *pmr_index;
3699 pool_foreach (pmr, lcm->pending_map_requests_pool,
3701 if (pmr->to_be_removed)
3703 clib_fifo_foreach (nonce, pmr->nonces, ({
3704 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
3707 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
3712 vec_foreach (pmr_index, to_be_removed)
3713 pool_put_index (lcm->pending_map_requests_by_nonce, pmr_index[0]);
3715 vec_free (to_be_removed);
3719 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
3721 static f64 time_left = RLOC_PROBING_INTERVAL;
3723 if (!lcm->is_enabled || !lcm->rloc_probing)
3729 time_left = RLOC_PROBING_INTERVAL;
3730 send_rloc_probes (lcm);
3735 update_map_register (lisp_cp_main_t * lcm, f64 dt)
3737 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
3738 static u64 mreg_sent_counter = 0;
3740 if (!lcm->is_enabled || !lcm->map_registering)
3746 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
3747 time_left = MAP_REGISTER_INTERVAL;
3750 mreg_sent_counter++;
3751 time_left = QUICK_MAP_REGISTER_INTERVAL;
3753 send_map_register (lcm, 1 /* want map notify */ );
3758 send_map_resolver_service (vlib_main_t * vm,
3759 vlib_node_runtime_t * rt, vlib_frame_t * f)
3763 pending_map_request_t *pmr;
3764 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3768 vlib_process_wait_for_event_or_clock (vm, period);
3770 /* currently no signals are expected - just wait for clock */
3771 (void) vlib_process_get_events (vm, 0);
3774 pool_foreach (pmr, lcm->pending_map_requests_pool,
3776 if (!pmr->to_be_removed)
3777 update_pending_request (pmr, period);
3781 remove_dead_pending_map_requests (lcm);
3783 update_map_register (lcm, period);
3784 update_rloc_probing (lcm, period);
3786 u64 now = clib_cpu_time_now ();
3788 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
3789 if (vec_len (expired) > 0)
3792 vec_foreach (mi, expired)
3794 remove_expired_mapping (lcm, mi[0]);
3796 _vec_len (expired) = 0;
3805 VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
3806 .function = send_map_resolver_service,
3807 .type = VLIB_NODE_TYPE_PROCESS,
3808 .name = "lisp-retry-service",
3809 .process_log2_n_stack_bytes = 16,
3813 VLIB_INIT_FUNCTION (lisp_cp_init);
3816 * fd.io coding-style-patch-verification: ON
3819 * eval: (c-set-style "gnu")