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/lisp-gpe/lisp_gpe_tunnel.h>
23 #include <vnet/fib/fib_entry.h>
24 #include <vnet/fib/fib_table.h>
26 #include <openssl/evp.h>
27 #include <openssl/hmac.h>
29 lisp_cp_main_t lisp_control_main;
31 u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
35 LISP_CP_INPUT_NEXT_DROP,
37 } lisp_cp_input_next_t;
55 vnet_lisp_get_map_request_mode (void)
57 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
58 return lcm->map_request_mode;
62 auth_data_len_by_key_id (lisp_key_type_t key_id)
67 return SHA1_AUTH_DATA_LEN;
68 case HMAC_SHA_256_128:
69 return SHA256_AUTH_DATA_LEN;
71 clib_warning ("unsupported key type: %d!", key_id);
78 get_encrypt_fcn (lisp_key_type_t key_id)
84 case HMAC_SHA_256_128:
87 clib_warning ("unsupported encryption key type: %d!", key_id);
94 queue_map_request (gid_address_t * seid, gid_address_t * deid,
95 u8 smr_invoked, u8 is_resend);
97 ip_interface_address_t *
98 ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
99 u32 sw_if_index, u8 loop)
101 vnet_main_t *vnm = vnet_get_main ();
102 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
103 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
104 sw_if_index = swif->unnumbered_sw_if_index;
106 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
107 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
109 return pool_elt_at_index ((lm)->if_address_pool, ia);
113 ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
116 ip_interface_address_t *ia;
118 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
121 return ip_interface_address_get_address (lm, ia);
125 ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
126 u8 version, ip_address_t * result)
128 ip_lookup_main_t *lm;
131 lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
132 addr = ip_interface_get_first_address (lm, sw_if_index, version);
136 ip_address_set (result, addr, version);
141 * convert from a LISP address to a FIB prefix
144 ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
146 if (addr->version == IP4)
149 prefix->fp_proto = FIB_PROTOCOL_IP4;
150 memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
151 memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
155 prefix->fp_len = 128;
156 prefix->fp_proto = FIB_PROTOCOL_IP6;
157 memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
162 * convert from a LISP to a FIB prefix
165 ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
166 fib_prefix_t * fib_prefix)
168 ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
169 fib_prefix->fp_len = ip_prefix->len;
173 * Find the sw_if_index of the interface that would be used to egress towards
177 ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
179 fib_node_index_t fei;
182 ip_address_to_fib_prefix (dst, &prefix);
184 fei = fib_table_lookup (0, &prefix);
186 return (fib_entry_get_resolving_interface (fei));
190 * Find first IP of the interface that would be used to egress towards dst.
191 * Returns 1 if the address is found 0 otherwise.
194 ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
195 ip_address_t * result)
198 ip_lookup_main_t *lm;
202 ASSERT (result != 0);
204 ipver = ip_addr_version (dst);
206 lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
207 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
212 /* find the first ip address */
213 addr = ip_interface_get_first_address (lm, si, ipver);
217 ip_address_set (result, addr, ipver);
222 dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add)
228 dp_table = hash_get (lcm->table_id_by_vni, vni);
232 clib_warning ("vni %d not associated to a vrf!", vni);
233 return VNET_API_ERROR_INVALID_VALUE;
238 dp_table = hash_get (lcm->bd_id_by_vni, vni);
241 clib_warning ("vni %d not associated to a bridge domain!", vni);
242 return VNET_API_ERROR_INVALID_VALUE;
246 /* enable/disable data-plane interface */
250 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
252 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0]);
257 lisp_gpe_tenant_l2_iface_unlock (vni);
259 lisp_gpe_tenant_l3_iface_unlock (vni);
266 dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
268 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
271 memset (a, 0, sizeof (*a));
273 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
277 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
279 /* delete dp fwd entry */
282 a->locator_pairs = fe->locator_pairs;
283 a->vni = gid_address_vni (&fe->reid);
284 gid_address_copy (&a->rmt_eid, &fe->reid);
286 gid_address_copy (&a->lcl_eid, &fe->leid);
288 vnet_lisp_del_fwd_stats (a, feip[0]);
289 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
291 /* delete entry in fwd table */
292 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
293 vec_free (fe->locator_pairs);
294 pool_put (lcm->fwd_entry_pool, fe);
298 * Finds first remote locator with best (lowest) priority that has a local
299 * peer locator with an underlying route to it.
303 get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
304 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
306 u32 i, limitp = 0, li, found = 0, esi;
307 locator_set_t *rmt_ls, *lcl_ls;
308 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
309 locator_t *lp, *rmt = 0;
314 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
316 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
318 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
325 /* find unvisited remote locator with best priority */
326 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
328 if (0 != hash_get (checked, i))
331 li = vec_elt (rmt_ls->locator_indices, i);
332 lp = pool_elt_at_index (lcm->locator_pool, li);
334 /* we don't support non-IP locators for now */
335 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
338 if ((found && lp->priority == limitp)
339 || (!found && lp->priority >= limitp))
343 /* don't search for locators with lower priority and don't
344 * check this locator again*/
345 limitp = lp->priority;
346 hash_set (checked, i, 1);
350 /* check if a local locator with a route to remote locator exists */
353 /* find egress sw_if_index for rmt locator */
355 ip_fib_get_egress_iface_for_dst (lcm,
356 &gid_address_ip (&rmt->address));
357 if ((u32) ~ 0 == esi)
360 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
362 li = vec_elt (lcl_ls->locator_indices, i);
363 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
365 /* found local locator with the needed sw_if_index */
366 if (sl->sw_if_index == esi)
368 /* and it has an address */
369 if (0 == ip_interface_get_first_ip_address (lcm,
371 gid_address_ip_version
376 memset (&pair, 0, sizeof (pair));
377 ip_address_copy (&pair.rmt_loc,
378 &gid_address_ip (&rmt->address));
379 ip_address_copy (&pair.lcl_loc, lcl_addr);
380 pair.weight = rmt->weight;
381 pair.priority = rmt->priority;
382 vec_add1 (locator_pairs[0], pair);
396 gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
399 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
403 switch (fid_addr_type (fid))
405 case FID_ADDR_IP_PREF:
406 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
407 gid_address_ippref (dst) = fid_addr_ippref (fid);
410 gid_address_type (dst) = GID_ADDR_MAC;
411 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
414 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
420 vnet_lisp_map_register_state_get (void)
422 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
423 return lcm->map_registering;
427 vnet_lisp_rloc_probe_state_get (void)
429 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
430 return lcm->rloc_probing;
434 dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
436 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
437 gid_address_t *rmt_eid, *lcl_eid;
438 mapping_t *lcl_map, *rmt_map;
440 uword *feip = 0, *dpid;
442 u8 type, is_src_dst = 0;
445 memset (a, 0, sizeof (*a));
447 /* remove entry if it already exists */
448 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
450 dp_del_fwd_entry (lcm, src_map_index, dst_map_index);
453 * Determine local mapping and eid
456 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
458 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
459 lcl_eid = &lcl_map->eid;
462 * Determine remote mapping and eid
464 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
465 rmt_eid = &rmt_map->eid;
468 * Build and insert data plane forwarding entry
472 if (MR_MODE_SRC_DST == lcm->map_request_mode)
474 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
476 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
477 &gid_address_sd_dst (rmt_eid));
478 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
479 &gid_address_sd_src (rmt_eid));
483 gid_address_copy (&a->rmt_eid, rmt_eid);
484 gid_address_copy (&a->lcl_eid, lcl_eid);
489 gid_address_copy (&a->rmt_eid, rmt_eid);
491 a->vni = gid_address_vni (&a->rmt_eid);
493 /* get vrf or bd_index associated to vni */
494 type = gid_address_type (&a->rmt_eid);
495 if (GID_ADDR_IP_PREFIX == type)
497 dpid = hash_get (lcm->table_id_by_vni, a->vni);
500 clib_warning ("vni %d not associated to a vrf!", a->vni);
503 a->table_id = dpid[0];
505 else if (GID_ADDR_MAC == type)
507 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
510 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
516 /* find best locator pair that 1) verifies LISP policy 2) are connected */
517 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
519 /* Either rmt mapping is negative or we can't find underlay path.
520 * Try again with petr if configured */
521 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
523 rmt_map = lisp_get_petr_mapping (lcm);
524 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
531 a->action = rmt_map->action;
534 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
536 /* add tunnel to fwd entry table XXX check return value from DP insertion */
537 pool_get (lcm->fwd_entry_pool, fe);
538 fe->locator_pairs = a->locator_pairs;
539 gid_address_copy (&fe->reid, &a->rmt_eid);
542 gid_address_copy (&fe->leid, &a->lcl_eid);
544 gid_address_copy (&fe->leid, lcl_eid);
546 fe->is_src_dst = is_src_dst;
547 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
548 fe - lcm->fwd_entry_pool);
555 } fwd_entry_mt_arg_t;
558 dp_add_fwd_entry_thread_fn (void *arg)
560 fwd_entry_mt_arg_t *a = arg;
561 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
562 dp_add_fwd_entry (lcm, a->si, a->di);
567 dp_add_fwd_entry_from_mt (u32 si, u32 di)
569 fwd_entry_mt_arg_t a;
571 memset (&a, 0, sizeof (a));
575 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
576 (u8 *) & a, sizeof (a));
581 * Returns vector of adjacencies.
583 * The caller must free the vector returned by this function.
585 * @param vni virtual network identifier
586 * @return vector of adjacencies
589 vnet_lisp_adjacencies_get_by_vni (u32 vni)
591 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
593 lisp_adjacency_t *adjs = 0, adj;
596 pool_foreach(fwd, lcm->fwd_entry_pool,
598 if (gid_address_vni (&fwd->reid) != vni)
601 gid_address_copy (&adj.reid, &fwd->reid);
602 gid_address_copy (&adj.leid, &fwd->leid);
603 vec_add1 (adjs, adj);
611 get_map_server (ip_address_t * a)
613 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
616 vec_foreach (m, lcm->map_servers)
618 if (!ip_address_cmp (&m->address, a))
627 get_map_resolver (ip_address_t * a)
629 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
632 vec_foreach (m, lcm->map_resolvers)
634 if (!ip_address_cmp (&m->address, a))
643 vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
646 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
647 lisp_msmr_t _ms, *ms = &_ms;
649 if (vnet_lisp_enable_disable_status () == 0)
651 clib_warning ("LISP is disabled!");
652 return VNET_API_ERROR_LISP_DISABLED;
657 if (get_map_server (addr))
659 clib_warning ("map-server %U already exists!", format_ip_address,
664 memset (ms, 0, sizeof (*ms));
665 ip_address_copy (&ms->address, addr);
666 vec_add1 (lcm->map_servers, ms[0]);
670 for (i = 0; i < vec_len (lcm->map_servers); i++)
672 ms = vec_elt_at_index (lcm->map_servers, i);
673 if (!ip_address_cmp (&ms->address, addr))
675 vec_del1 (lcm->map_servers, i);
685 * Add/remove mapping to/from map-cache. Overwriting not allowed.
688 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
689 u32 * map_index_result)
691 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
692 u32 mi, *map_indexp, map_index, i;
693 mapping_t *m, *old_map;
696 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
697 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
700 /* TODO check if overwriting and take appropriate actions */
701 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
703 clib_warning ("eid %U found in the eid-table", format_gid_address,
705 return VNET_API_ERROR_VALUE_EXIST;
708 pool_get (lcm->mapping_pool, m);
709 gid_address_copy (&m->eid, &a->eid);
710 m->locator_set_index = a->locator_set_index;
712 m->action = a->action;
714 m->is_static = a->is_static;
715 m->key = vec_dup (a->key);
716 m->key_id = a->key_id;
718 map_index = m - lcm->mapping_pool;
719 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
722 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
724 clib_warning ("Locator set with index %d doesn't exist",
725 a->locator_set_index);
726 return VNET_API_ERROR_INVALID_VALUE;
729 /* add eid to list of eids supported by locator-set */
730 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
731 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
732 a->locator_set_index);
733 vec_add1 (eid_indexes[0], map_index);
738 vec_add1 (lcm->local_mappings_indexes, map_index);
740 map_index_result[0] = map_index;
744 if (mi == GID_LOOKUP_MISS)
746 clib_warning ("eid %U not found in the eid-table",
747 format_gid_address, &a->eid);
748 return VNET_API_ERROR_INVALID_VALUE;
751 /* clear locator-set to eids binding */
752 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
753 a->locator_set_index);
754 for (i = 0; i < vec_len (eid_indexes[0]); i++)
756 map_indexp = vec_elt_at_index (eid_indexes[0], i);
757 if (map_indexp[0] == mi)
760 vec_del1 (eid_indexes[0], i);
762 /* remove local mark if needed */
763 m = pool_elt_at_index (lcm->mapping_pool, mi);
767 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
769 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
770 if (lm_indexp[0] == mi)
773 vec_del1 (lcm->local_mappings_indexes, k);
776 /* remove mapping from dictionary */
777 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
778 gid_address_free (&m->eid);
779 pool_put_index (lcm->mapping_pool, mi);
786 * Add/update/delete mapping to/in/from map-cache.
789 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
790 u32 * map_index_result)
796 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
798 if (vnet_lisp_enable_disable_status () == 0)
800 clib_warning ("LISP is disabled!");
801 return VNET_API_ERROR_LISP_DISABLED;
804 vni = gid_address_vni (&a->eid);
805 type = gid_address_type (&a->eid);
806 if (GID_ADDR_IP_PREFIX == type)
807 dp_table = hash_get (lcm->table_id_by_vni, vni);
808 else if (GID_ADDR_MAC == type)
809 dp_table = hash_get (lcm->bd_id_by_vni, vni);
813 clib_warning ("vni %d not associated to a %s!", vni,
814 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
815 return VNET_API_ERROR_INVALID_VALUE;
818 /* store/remove mapping from map-cache */
819 return vnet_lisp_map_cache_add_del (a, map_index_result);
823 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
825 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
826 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
828 if (vnet_lisp_enable_disable_status () == 0)
830 clib_warning ("LISP is disabled!");
834 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
835 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
837 if (!is_l2 && (vni == 0 || dp_id == 0))
839 clib_warning ("can't add/del default vni-vrf mapping!");
843 dp_idp = hash_get (dp_table_by_vni[0], vni);
844 vnip = hash_get (vni_by_dp_table[0], dp_id);
850 clib_warning ("vni %d or vrf %d already used in vrf/vni "
851 "mapping!", vni, dp_id);
854 hash_set (dp_table_by_vni[0], vni, dp_id);
855 hash_set (vni_by_dp_table[0], dp_id, vni);
857 /* create dp iface */
858 dp_add_del_iface (lcm, vni, is_l2, 1);
862 if (!dp_idp || !vnip)
864 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
865 "mapping!", vni, dp_id);
868 hash_unset (dp_table_by_vni[0], vni);
869 hash_unset (vni_by_dp_table[0], dp_id);
871 /* remove dp iface */
872 dp_add_del_iface (lcm, vni, is_l2, 0);
878 /* return 0 if the two locator sets are identical 1 otherwise */
880 compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
881 locator_t * new_locators)
884 locator_t *old_loc, *new_loc;
886 if (vec_len (old_ls_indexes) != vec_len (new_locators))
889 for (i = 0; i < vec_len (new_locators); i++)
891 old_li = vec_elt (old_ls_indexes, i);
892 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
894 new_loc = vec_elt_at_index (new_locators, i);
896 if (locator_cmp (old_loc, new_loc))
906 gid_address_t *eids_to_be_deleted;
907 } remove_mapping_args_t;
910 * Callback invoked when a sub-prefix is found
913 remove_mapping_if_needed (u32 mi, void *arg)
916 remove_mapping_args_t *a = arg;
917 lisp_cp_main_t *lcm = a->lcm;
921 m = pool_elt_at_index (lcm->mapping_pool, mi);
925 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
929 if (0 != vec_len (ls->locator_indices))
934 if (0 == vec_len (ls->locator_indices))
939 vec_add1 (a->eids_to_be_deleted, m->eid);
943 * This function searches map cache and looks for IP prefixes that are subset
944 * of the provided one. If such prefix is found depending on 'is_negative'
947 * 1) if is_negative is true and found prefix points to positive mapping,
948 * then the mapping is removed
949 * 2) if is_negative is false and found prefix points to negative mapping,
950 * then the mapping is removed
953 remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
957 remove_mapping_args_t a;
959 memset (&a, 0, sizeof (a));
961 /* do this only in src/dst mode ... */
962 if (MR_MODE_SRC_DST != lcm->map_request_mode)
965 /* ... and only for IP prefix */
966 if (GID_ADDR_SRC_DST != gid_address_type (eid)
967 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
970 a.is_negative = is_negative;
973 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
974 remove_mapping_if_needed, &a);
976 vec_foreach (e, a.eids_to_be_deleted)
978 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
980 memset (adj_args, 0, sizeof (adj_args[0]));
981 gid_address_copy (&adj_args->reid, e);
982 adj_args->is_add = 0;
983 if (vnet_lisp_add_del_adjacency (adj_args))
984 clib_warning ("failed to del adjacency!");
986 vnet_lisp_add_del_mapping (e, 0, 0, 0, 0, 0 /* is add */ , 0, 0);
989 vec_free (a.eids_to_be_deleted);
993 mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
995 timing_wheel_delete (&lcm->wheel, mi);
999 is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
1001 fib_node_index_t fei;
1002 fib_prefix_t prefix;
1003 fib_entry_flag_t flags;
1005 ip_address_to_fib_prefix (addr, &prefix);
1007 fei = fib_table_lookup (0, &prefix);
1008 flags = fib_entry_get_flags (fei);
1009 return (FIB_ENTRY_FLAG_LOCAL & flags);
1013 * Adds/removes/updates mapping. Does not program forwarding.
1015 * @param eid end-host identifier
1016 * @param rlocs vector of remote locators
1017 * @param action action for negative map-reply
1018 * @param is_add add mapping if non-zero, delete otherwise
1019 * @param res_map_index the map-index that was created/updated/removed. It is
1020 * set to ~0 if no action is taken.
1021 * @param is_static used for distinguishing between statically learned
1022 remote mappings and mappings obtained from MR
1023 * @return return code
1026 vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
1027 u8 authoritative, u32 ttl, u8 is_add, u8 is_static,
1028 u32 * res_map_index)
1030 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1031 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1032 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1033 u32 mi, ls_index = 0, dst_map_index;
1037 if (vnet_lisp_enable_disable_status () == 0)
1039 clib_warning ("LISP is disabled!");
1040 return VNET_API_ERROR_LISP_DISABLED;
1044 res_map_index[0] = ~0;
1046 memset (m_args, 0, sizeof (m_args[0]));
1047 memset (ls_args, 0, sizeof (ls_args[0]));
1049 ls_args->locators = rlocs;
1051 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1052 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1056 /* check if none of the locators match localy configured address */
1057 vec_foreach (loc, rlocs)
1059 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1060 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1062 clib_warning ("RLOC %U matches a local address!",
1063 format_gid_address, &loc->address);
1064 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1068 /* overwrite: if mapping already exists, decide if locators should be
1069 * updated and be done */
1070 if (old_map && gid_address_cmp (&old_map->eid, eid) == 0)
1072 if (!is_static && (old_map->is_static || old_map->local))
1074 /* do not overwrite local or static remote mappings */
1075 clib_warning ("mapping %U rejected due to collision with local "
1076 "or static remote mapping!", format_gid_address,
1081 locator_set_t *old_ls;
1083 /* update mapping attributes */
1084 old_map->action = action;
1085 old_map->authoritative = authoritative;
1088 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1089 old_map->locator_set_index);
1090 if (compare_locators (lcm, old_ls->locator_indices,
1093 /* set locator-set index to overwrite */
1094 ls_args->is_add = 1;
1095 ls_args->index = old_map->locator_set_index;
1096 vnet_lisp_add_del_locator_set (ls_args, 0);
1098 res_map_index[0] = mi;
1104 remove_overlapping_sub_prefixes (lcm, eid, 0 == ls_args->locators);
1106 ls_args->is_add = 1;
1107 ls_args->index = ~0;
1109 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1112 gid_address_copy (&m_args->eid, eid);
1114 m_args->action = action;
1115 m_args->locator_set_index = ls_index;
1116 m_args->is_static = is_static;
1118 vnet_lisp_map_cache_add_del (m_args, &dst_map_index);
1121 res_map_index[0] = dst_map_index;
1126 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1128 clib_warning ("cannot delete mapping for eid %U",
1129 format_gid_address, eid);
1134 gid_address_copy (&m_args->eid, eid);
1135 m_args->locator_set_index = old_map->locator_set_index;
1137 /* delete mapping associated from map-cache */
1138 vnet_lisp_map_cache_add_del (m_args, 0);
1140 ls_args->is_add = 0;
1141 ls_args->index = old_map->locator_set_index;
1142 /* delete locator set */
1143 vnet_lisp_add_del_locator_set (ls_args, 0);
1145 /* delete timer associated to the mapping if any */
1146 if (old_map->timer_set)
1147 mapping_delete_timer (lcm, mi);
1149 /* return old mapping index */
1151 res_map_index[0] = mi;
1159 vnet_lisp_clear_all_remote_adjacencies (void)
1162 u32 mi, *map_indices = 0, *map_indexp;
1163 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1164 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1165 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1168 pool_foreach_index (mi, lcm->mapping_pool,
1170 vec_add1 (map_indices, mi);
1174 vec_foreach (map_indexp, map_indices)
1176 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1179 dp_del_fwd_entry (lcm, 0, map_indexp[0]);
1181 dm_args->is_add = 0;
1182 gid_address_copy (&dm_args->eid, &map->eid);
1183 dm_args->locator_set_index = map->locator_set_index;
1185 /* delete mapping associated to fwd entry */
1186 vnet_lisp_map_cache_add_del (dm_args, 0);
1190 ls->index = map->locator_set_index;
1191 /* delete locator set */
1192 rv = vnet_lisp_add_del_locator_set (ls, 0);
1200 vec_free (map_indices);
1205 * Adds adjacency or removes forwarding entry associated to remote mapping.
1206 * Note that adjacencies are not stored, they only result in forwarding entries
1210 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1212 lisp_cp_main_t *lcm = &lisp_control_main;
1213 u32 local_mi, remote_mi = ~0;
1215 if (vnet_lisp_enable_disable_status () == 0)
1217 clib_warning ("LISP is disabled!");
1218 return VNET_API_ERROR_LISP_DISABLED;
1221 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1222 &a->reid, &a->leid);
1223 if (GID_LOOKUP_MISS == remote_mi)
1225 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1226 format_gid_address, &a->reid);
1233 /* check if source eid has an associated mapping. If pitr mode is on,
1234 * just use the pitr's mapping */
1235 local_mi = lcm->lisp_pitr ? lcm->pitr_map_index :
1236 gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->leid);
1238 if (GID_LOOKUP_MISS == local_mi)
1240 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1241 format_gid_address, &a->leid);
1246 /* update forwarding */
1247 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1250 dp_del_fwd_entry (lcm, 0, remote_mi);
1256 vnet_lisp_set_map_request_mode (u8 mode)
1258 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1260 if (vnet_lisp_enable_disable_status () == 0)
1262 clib_warning ("LISP is disabled!");
1263 return VNET_API_ERROR_LISP_DISABLED;
1266 if (mode >= _MR_MODE_MAX)
1268 clib_warning ("Invalid LISP map request mode %d!", mode);
1269 return VNET_API_ERROR_INVALID_ARGUMENT;
1272 lcm->map_request_mode = mode;
1277 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1279 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1280 u32 locator_set_index = ~0;
1284 if (vnet_lisp_enable_disable_status () == 0)
1286 clib_warning ("LISP is disabled!");
1287 return VNET_API_ERROR_LISP_DISABLED;
1290 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1293 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1296 locator_set_index = p[0];
1300 pool_get (lcm->mapping_pool, m);
1301 m->locator_set_index = locator_set_index;
1304 lcm->pitr_map_index = m - lcm->mapping_pool;
1306 /* enable pitr mode */
1311 /* remove pitr mapping */
1312 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1314 /* disable pitr mode */
1321 * Configure Proxy-ETR
1323 * @param ip PETR's IP address
1324 * @param is_add Flag that indicates if this is an addition or removal
1326 * return 0 on success
1329 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1331 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1334 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1337 if (vnet_lisp_enable_disable_status () == 0)
1339 clib_warning ("LISP is disabled!");
1340 return VNET_API_ERROR_LISP_DISABLED;
1343 memset (ls_args, 0, sizeof (*ls_args));
1347 /* Create dummy petr locator-set */
1348 memset (&loc, 0, sizeof (loc));
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));
2666 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
2669 u8 version, preflen;
2671 gid_address_type (src) = GID_ADDR_IP_PREFIX;
2672 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
2674 ip = vlib_buffer_get_current (b);
2675 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
2677 version = gid_address_ip_version (src);
2678 preflen = ip_address_max_len (version);
2679 gid_address_ippref_len (src) = preflen;
2680 gid_address_ippref_len (dst) = preflen;
2682 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
2683 gid_address_vni (dst) = vni;
2684 gid_address_vni (src) = vni;
2686 else if (LISP_AFI_MAC == type)
2688 ethernet_header_t *eh;
2690 eh = vlib_buffer_get_current (b);
2692 gid_address_type (src) = GID_ADDR_MAC;
2693 gid_address_type (dst) = GID_ADDR_MAC;
2694 mac_copy (&gid_address_mac (src), eh->src_address);
2695 mac_copy (&gid_address_mac (dst), eh->dst_address);
2698 vni = lisp_get_vni_from_buffer_eth (lcm, b);
2700 gid_address_vni (dst) = vni;
2701 gid_address_vni (src) = vni;
2703 else if (LISP_AFI_LCAF == type)
2705 /* Eventually extend this to support NSH and other */
2711 lisp_cp_lookup_inline (vlib_main_t * vm,
2712 vlib_node_runtime_t * node,
2713 vlib_frame_t * from_frame, int overlay)
2715 u32 *from, *to_next_drop, di, si;
2716 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2717 u32 pkts_mapped = 0;
2718 uword n_left_from, n_left_to_next_drop;
2720 from = vlib_frame_vector_args (from_frame);
2721 n_left_from = from_frame->n_vectors;
2723 while (n_left_from > 0)
2725 vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
2726 to_next_drop, n_left_to_next_drop);
2728 while (n_left_from > 0 && n_left_to_next_drop > 0)
2732 gid_address_t src, dst;
2737 to_next_drop[0] = pi0;
2739 n_left_to_next_drop -= 1;
2741 b0 = vlib_get_buffer (vm, pi0);
2742 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
2744 /* src/dst eid pair */
2745 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
2747 /* if we have remote mapping for destination already in map-chache
2748 add forwarding tunnel directly. If not send a map-request */
2749 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
2753 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
2754 /* send a map-request also in case of negative mapping entry
2755 with corresponding action */
2756 if (m->action == LISP_SEND_MAP_REQUEST)
2758 /* send map-request */
2759 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2760 0 /* is_resend */ );
2765 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
2769 dp_add_fwd_entry_from_mt (si, di);
2775 /* send map-request */
2776 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2777 0 /* is_resend */ );
2781 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2783 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
2786 memset (tr, 0, sizeof (*tr));
2787 gid_address_copy (&tr->dst_eid, &dst);
2788 ip_address_copy (&tr->map_resolver_ip,
2789 &lcm->active_map_resolver);
2791 gid_address_free (&dst);
2792 gid_address_free (&src);
2795 vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
2796 n_left_to_next_drop);
2798 vlib_node_increment_counter (vm, node->node_index,
2799 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
2801 return from_frame->n_vectors;
2805 lisp_cp_lookup_ip4 (vlib_main_t * vm,
2806 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2808 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
2812 lisp_cp_lookup_ip6 (vlib_main_t * vm,
2813 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2815 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
2819 lisp_cp_lookup_l2 (vlib_main_t * vm,
2820 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2822 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
2826 lisp_cp_lookup_nsh (vlib_main_t * vm,
2827 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2829 /* TODO decide if NSH should be propagated as LCAF or not */
2830 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
2834 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
2835 .function = lisp_cp_lookup_ip4,
2836 .name = "lisp-cp-lookup-ip4",
2837 .vector_size = sizeof (u32),
2838 .format_trace = format_lisp_cp_lookup_trace,
2839 .type = VLIB_NODE_TYPE_INTERNAL,
2841 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2842 .error_strings = lisp_cp_lookup_error_strings,
2844 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2847 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2853 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
2854 .function = lisp_cp_lookup_ip6,
2855 .name = "lisp-cp-lookup-ip6",
2856 .vector_size = sizeof (u32),
2857 .format_trace = format_lisp_cp_lookup_trace,
2858 .type = VLIB_NODE_TYPE_INTERNAL,
2860 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2861 .error_strings = lisp_cp_lookup_error_strings,
2863 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2866 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2872 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
2873 .function = lisp_cp_lookup_l2,
2874 .name = "lisp-cp-lookup-l2",
2875 .vector_size = sizeof (u32),
2876 .format_trace = format_lisp_cp_lookup_trace,
2877 .type = VLIB_NODE_TYPE_INTERNAL,
2879 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2880 .error_strings = lisp_cp_lookup_error_strings,
2882 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2885 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2891 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
2892 .function = lisp_cp_lookup_nsh,
2893 .name = "lisp-cp-lookup-nsh",
2894 .vector_size = sizeof (u32),
2895 .format_trace = format_lisp_cp_lookup_trace,
2896 .type = VLIB_NODE_TYPE_INTERNAL,
2898 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2899 .error_strings = lisp_cp_lookup_error_strings,
2901 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2904 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2909 /* lisp_cp_input statistics */
2910 #define foreach_lisp_cp_input_error \
2912 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
2913 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
2914 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
2915 _(MAP_REPLIES_RECEIVED, "map-replies received")
2917 static char *lisp_cp_input_error_strings[] = {
2918 #define _(sym,string) string,
2919 foreach_lisp_cp_input_error
2925 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
2926 foreach_lisp_cp_input_error
2928 LISP_CP_INPUT_N_ERROR,
2929 } lisp_cp_input_error_t;
2933 gid_address_t dst_eid;
2934 ip4_address_t map_resolver_ip;
2935 } lisp_cp_input_trace_t;
2938 format_lisp_cp_input_trace (u8 * s, va_list * args)
2940 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2941 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2942 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
2943 va_arg (*args, lisp_cp_input_trace_t *);
2945 s = format (s, "LISP-CP-INPUT: TODO");
2950 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
2953 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
2954 memset (adj_args, 0, sizeof (adj_args[0]));
2956 m = pool_elt_at_index (lcm->mapping_pool, mi);
2958 gid_address_copy (&adj_args->reid, &m->eid);
2959 adj_args->is_add = 0;
2960 if (vnet_lisp_add_del_adjacency (adj_args))
2961 clib_warning ("failed to del adjacency!");
2963 vnet_lisp_add_del_mapping (&m->eid, 0, 0, 0, ~0, 0 /* is_add */ ,
2964 0 /* is_static */ , 0);
2965 mapping_delete_timer (lcm, mi);
2969 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
2970 f64 expiration_time)
2973 u64 now = clib_cpu_time_now ();
2974 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
2975 u64 exp_clock_time = now + expiration_time * cpu_cps;
2977 m = pool_elt_at_index (lcm->mapping_pool, mi);
2980 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
2984 map_records_arg_free (map_records_arg_t * a)
2987 vec_foreach (m, a->mappings)
2989 vec_free (m->locators);
2990 gid_address_free (&m->eid);
2997 process_map_reply (map_records_arg_t * a)
3000 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3001 u32 dst_map_index = 0;
3002 pending_map_request_t *pmr;
3006 if (a->is_rloc_probe)
3009 /* Check pending requests table and nonce */
3010 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3013 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3016 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3018 vec_foreach (m, a->mappings)
3020 /* insert/update mappings cache */
3021 vnet_lisp_add_del_mapping (&m->eid, m->locators, m->action,
3022 m->authoritative, m->ttl,
3023 1, 0 /* is_static */ , &dst_map_index);
3025 if (dst_map_index == (u32) ~ 0)
3028 /* try to program forwarding only if mapping saved or updated */
3029 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3030 memset (adj_args, 0, sizeof (adj_args[0]));
3032 gid_address_copy (&adj_args->leid, &pmr->src);
3033 gid_address_copy (&adj_args->reid, &m->eid);
3034 adj_args->is_add = 1;
3035 if (vnet_lisp_add_del_adjacency (adj_args))
3036 clib_warning ("failed to add adjacency!");
3038 if ((u32) ~ 0 != m->ttl)
3039 mapping_start_expiration_timer (lcm, dst_map_index, m->ttl * 60);
3042 /* remove pending map request entry */
3045 clib_fifo_foreach (noncep, pmr->nonces, ({
3046 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3050 clib_fifo_free (pmr->nonces);
3051 pool_put (lcm->pending_map_requests_pool, pmr);
3054 map_records_arg_free (a);
3059 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3060 lisp_key_type_t key_id, u8 * key)
3066 auth_data_len = auth_data_len_by_key_id (key_id);
3067 if ((u16) ~ 0 == auth_data_len)
3069 clib_warning ("invalid length for key_id %d!", key_id);
3073 /* save auth data */
3074 vec_validate (auth_data, auth_data_len - 1);
3075 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3077 /* clear auth data */
3078 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3080 /* get hash of the message */
3081 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3082 (unsigned char *) h, msg_len, NULL, NULL);
3084 result = memcmp (code, auth_data, auth_data_len);
3086 vec_free (auth_data);
3092 process_map_notify (map_records_arg_t * a)
3094 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3097 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3100 clib_warning ("No pending map-register entry with nonce %lu!",
3105 map_records_arg_free (a);
3106 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3110 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3114 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3117 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3121 return pool_elt_at_index (lcm->mapping_pool, mi);
3125 * When map-notify is received it is necessary that all EIDs in the record
3126 * list share common key. The key is then used to verify authentication
3127 * data in map-notify message.
3130 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3131 u32 key_id, u8 ** key_out)
3133 u32 i, len = vec_len (maps);
3136 /* get key of the first mapping */
3137 m = get_mapping (lcm, &maps[0].eid);
3141 key_out[0] = m->key;
3143 for (i = 1; i < len; i++)
3145 m = get_mapping (lcm, &maps[i].eid);
3149 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3151 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3159 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3161 locator_t *locators = 0;
3167 /* parse record eid */
3168 for (i = 0; i < count; i++)
3170 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3173 clib_warning ("Failed to parse mapping record!");
3174 vec_foreach (loc, locators) locator_free (loc);
3175 vec_free (locators);
3179 m.locators = locators;
3180 gid_address_copy (&m.eid, &deid);
3181 vec_add1 (a->mappings, m);
3187 static map_records_arg_t *
3188 parse_map_notify (vlib_buffer_t * b)
3191 map_notify_hdr_t *mnotif_hdr;
3192 lisp_key_type_t key_id;
3193 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3196 u16 auth_data_len = 0;
3198 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
3200 memset (a, 0, sizeof (*a));
3201 mnotif_hdr = vlib_buffer_get_current (b);
3202 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3203 memset (&deid, 0, sizeof (deid));
3205 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3206 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3207 auth_data_len = auth_data_len_by_key_id (key_id);
3209 /* advance buffer by authentication data */
3210 vlib_buffer_pull (b, auth_data_len);
3212 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3213 rc = parse_map_records (b, a, record_count);
3216 map_records_arg_free (a);
3220 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3223 map_records_arg_free (a);
3227 /* verify authentication data */
3228 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
3229 - (u8 *) mnotif_hdr, key_id, key))
3231 clib_warning ("Map-notify auth data verification failed for nonce %lu!",
3233 map_records_arg_free (a);
3239 static vlib_buffer_t *
3240 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
3241 ip_address_t * dst, u64 nonce, u8 probe_bit,
3242 mapping_t * records, u16 dst_port, u32 * bi_res)
3246 vlib_main_t *vm = lcm->vlib_main;
3248 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
3250 clib_warning ("Can't allocate buffer for Map-Register!");
3254 b = vlib_get_buffer (vm, bi);
3256 /* leave some space for the encap headers */
3257 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
3259 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
3261 /* push outer ip header */
3262 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst);
3269 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
3270 u8 probe_bit, u64 nonce, u16 dst_port,
3271 ip_address_t * probed_loc)
3277 u32 next_index, *to_next;
3278 mapping_t *records = 0, *m;
3280 m = pool_elt_at_index (lcm->mapping_pool, mi);
3284 vec_add1 (records, m[0]);
3285 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
3286 memset (&src, 0, sizeof (src));
3288 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
3290 clib_warning ("can't find inteface address for %U", format_ip_address,
3295 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
3299 free_map_register_records (records);
3301 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3302 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3303 ip4_lookup_node.index : ip6_lookup_node.index;
3305 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3307 /* Enqueue the packet */
3308 to_next = vlib_frame_vector_args (f);
3311 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3316 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
3318 const i32 start = vnet_buffer (b)->ip.start_of_ip_header;
3319 if (start < 0 && start < -sizeof (b->pre_data))
3325 *ip_hdr = b->data + start;
3326 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
3331 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
3332 lisp_cp_main_t * lcm, vlib_buffer_t * b)
3335 ip_address_t *dst_loc = 0, probed_loc, src_loc;
3337 map_request_hdr_t *mreq_hdr;
3338 gid_address_t src, dst;
3340 u32 i, len = 0, rloc_probe_recv = 0;
3341 gid_address_t *itr_rlocs = 0;
3343 mreq_hdr = vlib_buffer_get_current (b);
3344 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
3347 ("Only SMR Map-Requests and RLOC probe supported for now!");
3351 vlib_buffer_pull (b, sizeof (*mreq_hdr));
3352 nonce = MREQ_NONCE (mreq_hdr);
3355 len = lisp_msg_parse_addr (b, &src);
3359 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
3360 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
3364 /* parse eid records and send SMR-invoked map-requests */
3365 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
3367 memset (&dst, 0, sizeof (dst));
3368 len = lisp_msg_parse_eid_rec (b, &dst);
3371 clib_warning ("Can't parse map-request EID-record");
3375 if (MREQ_SMR (mreq_hdr))
3377 /* send SMR-invoked map-requests */
3378 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
3380 else if (MREQ_RLOC_PROBE (mreq_hdr))
3382 find_ip_header (b, &ip_hdr);
3385 clib_warning ("Cannot find the IP header!");
3389 memset (&m, 0, sizeof (m));
3390 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3392 // TODO: select best locator; for now use the first one
3393 dst_loc = &gid_address_ip (&itr_rlocs[0]);
3395 /* get src/dst IP addresses */
3396 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
3398 // TODO get source port from buffer
3399 u16 src_port = LISP_CONTROL_PORT;
3401 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
3402 src_port, &probed_loc);
3407 vlib_node_increment_counter (vm, node->node_index,
3408 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
3410 vec_free (itr_rlocs);
3413 static map_records_arg_t *
3414 parse_map_reply (vlib_buffer_t * b)
3421 map_reply_hdr_t *mrep_hdr;
3422 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
3423 memset (a, 0, sizeof (*a));
3424 locator_t *locators;
3426 mrep_hdr = vlib_buffer_get_current (b);
3427 a->nonce = MREP_NONCE (mrep_hdr);
3428 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
3429 vlib_buffer_pull (b, sizeof (*mrep_hdr));
3431 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
3433 memset (&m, 0, sizeof (m));
3435 h = vlib_buffer_get_current (b);
3437 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
3438 m.action = MAP_REC_ACTION (h);
3439 m.authoritative = MAP_REC_AUTH (h);
3441 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
3444 clib_warning ("Failed to parse mapping record!");
3445 map_records_arg_free (a);
3449 m.locators = locators;
3450 gid_address_copy (&m.eid, &deid);
3451 vec_add1 (a->mappings, m);
3457 queue_map_reply_for_processing (map_records_arg_t * a)
3459 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
3463 queue_map_notify_for_processing (map_records_arg_t * a)
3465 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
3469 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
3470 vlib_frame_t * from_frame)
3472 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
3473 map_notifies_recv = 0;
3474 lisp_msg_type_e type;
3475 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3476 map_records_arg_t *a;
3478 from = vlib_frame_vector_args (from_frame);
3479 n_left_from = from_frame->n_vectors;
3482 while (n_left_from > 0)
3484 u32 n_left_to_next_drop;
3486 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
3487 to_next_drop, n_left_to_next_drop);
3488 while (n_left_from > 0 && n_left_to_next_drop > 0)
3496 to_next_drop[0] = bi0;
3498 n_left_to_next_drop -= 1;
3500 b0 = vlib_get_buffer (vm, bi0);
3502 type = lisp_msg_type (vlib_buffer_get_current (b0));
3505 case LISP_MAP_REPLY:
3506 a = parse_map_reply (b0);
3509 if (a->is_rloc_probe)
3510 rloc_probe_rep_recv++;
3511 queue_map_reply_for_processing (a);
3514 case LISP_MAP_REQUEST:
3515 process_map_request (vm, node, lcm, b0);
3517 case LISP_MAP_NOTIFY:
3518 a = parse_map_notify (b0);
3521 map_notifies_recv++;
3522 queue_map_notify_for_processing (a);
3526 clib_warning ("Unsupported LISP message type %d", type);
3530 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
3532 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3538 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
3539 n_left_to_next_drop);
3541 vlib_node_increment_counter (vm, node->node_index,
3542 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
3543 rloc_probe_rep_recv);
3544 vlib_node_increment_counter (vm, node->node_index,
3545 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
3547 return from_frame->n_vectors;
3551 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
3552 .function = lisp_cp_input,
3553 .name = "lisp-cp-input",
3554 .vector_size = sizeof (u32),
3555 .format_trace = format_lisp_cp_input_trace,
3556 .type = VLIB_NODE_TYPE_INTERNAL,
3558 .n_errors = LISP_CP_INPUT_N_ERROR,
3559 .error_strings = lisp_cp_input_error_strings,
3561 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
3564 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
3570 lisp_cp_init (vlib_main_t * vm)
3572 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3573 clib_error_t *error = 0;
3575 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
3578 lcm->im4 = &ip4_main;
3579 lcm->im6 = &ip6_main;
3580 lcm->vlib_main = vm;
3581 lcm->vnet_main = vnet_get_main ();
3582 lcm->mreq_itr_rlocs = ~0;
3585 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
3587 gid_dictionary_init (&lcm->mapping_index_by_gid);
3588 lcm->do_map_resolver_election = 1;
3589 lcm->map_request_mode = MR_MODE_DST_ONLY;
3591 /* default vrf mapped to vni 0 */
3592 hash_set (lcm->table_id_by_vni, 0, 0);
3593 hash_set (lcm->vni_by_table_id, 0, 0);
3595 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
3596 lisp_cp_input_node.index, 1 /* is_ip4 */ );
3597 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
3598 lisp_cp_input_node.index, 0 /* is_ip4 */ );
3600 u64 now = clib_cpu_time_now ();
3601 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
3606 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
3607 lisp_api_stats_t * stat, lisp_stats_key_t * key,
3611 lisp_gpe_fwd_entry_key_t fwd_key;
3612 const lisp_gpe_tunnel_t *lgt;
3615 memset (stat, 0, sizeof (*stat));
3616 memset (&fwd_key, 0, sizeof (fwd_key));
3618 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
3621 gid_to_dp_address (&fe->reid, &stat->deid);
3622 gid_to_dp_address (&fe->leid, &stat->seid);
3623 stat->vni = gid_address_vni (&fe->reid);
3625 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
3626 stat->loc_rloc = lgt->key->lcl;
3627 stat->rmt_rloc = lgt->key->rmt;
3629 s = pool_elt_at_index (lgm->lisp_stats_pool, stats_index);
3635 vnet_lisp_get_stats (void)
3637 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
3638 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3639 lisp_api_stats_t *stats = 0, stat;
3640 lisp_stats_key_t *key;
3644 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
3646 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
3647 vec_add1 (stats, stat);
3655 send_map_request_thread_fn (void *arg)
3657 map_request_args_t *a = arg;
3658 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3661 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
3663 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
3669 queue_map_request (gid_address_t * seid, gid_address_t * deid,
3670 u8 smr_invoked, u8 is_resend)
3672 map_request_args_t a;
3674 a.is_resend = is_resend;
3675 gid_address_copy (&a.seid, seid);
3676 gid_address_copy (&a.deid, deid);
3677 a.smr_invoked = smr_invoked;
3679 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
3680 (u8 *) & a, sizeof (a));
3685 * Take an action with a pending map request depending on expiration time
3686 * and re-try counters.
3689 update_pending_request (pending_map_request_t * r, f64 dt)
3691 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3694 if (r->time_to_expire - dt < 0)
3695 /* it's time to decide what to do with this pending request */
3697 if (r->retries_num >= NUMBER_OF_RETRIES)
3698 /* too many retries -> assume current map resolver is not available */
3700 mr = get_map_resolver (&lcm->active_map_resolver);
3703 clib_warning ("Map resolver %U not found - probably deleted "
3704 "by the user recently.", format_ip_address,
3705 &lcm->active_map_resolver);
3709 clib_warning ("map resolver %U is unreachable, ignoring",
3710 format_ip_address, &lcm->active_map_resolver);
3712 /* mark current map resolver unavailable so it won't be
3713 * selected next time */
3715 mr->last_update = vlib_time_now (lcm->vlib_main);
3718 reset_pending_mr_counters (r);
3719 elect_map_resolver (lcm);
3721 /* try to find a next eligible map resolver and re-send */
3722 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3728 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3731 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
3735 r->time_to_expire -= dt;
3739 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
3742 pending_map_request_t *pmr;
3743 u32 *to_be_removed = 0, *pmr_index;
3746 pool_foreach (pmr, lcm->pending_map_requests_pool,
3748 if (pmr->to_be_removed)
3750 clib_fifo_foreach (nonce, pmr->nonces, ({
3751 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
3754 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
3759 vec_foreach (pmr_index, to_be_removed)
3760 pool_put_index (lcm->pending_map_requests_by_nonce, pmr_index[0]);
3762 vec_free (to_be_removed);
3766 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
3768 static f64 time_left = RLOC_PROBING_INTERVAL;
3770 if (!lcm->is_enabled || !lcm->rloc_probing)
3776 time_left = RLOC_PROBING_INTERVAL;
3777 send_rloc_probes (lcm);
3782 update_map_register (lisp_cp_main_t * lcm, f64 dt)
3784 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
3785 static u64 mreg_sent_counter = 0;
3787 if (!lcm->is_enabled || !lcm->map_registering)
3793 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
3794 time_left = MAP_REGISTER_INTERVAL;
3797 mreg_sent_counter++;
3798 time_left = QUICK_MAP_REGISTER_INTERVAL;
3800 send_map_register (lcm, 1 /* want map notify */ );
3805 send_map_resolver_service (vlib_main_t * vm,
3806 vlib_node_runtime_t * rt, vlib_frame_t * f)
3810 pending_map_request_t *pmr;
3811 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3815 vlib_process_wait_for_event_or_clock (vm, period);
3817 /* currently no signals are expected - just wait for clock */
3818 (void) vlib_process_get_events (vm, 0);
3821 pool_foreach (pmr, lcm->pending_map_requests_pool,
3823 if (!pmr->to_be_removed)
3824 update_pending_request (pmr, period);
3828 remove_dead_pending_map_requests (lcm);
3830 update_map_register (lcm, period);
3831 update_rloc_probing (lcm, period);
3833 u64 now = clib_cpu_time_now ();
3835 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
3836 if (vec_len (expired) > 0)
3839 vec_foreach (mi, expired)
3841 remove_expired_mapping (lcm, mi[0]);
3843 _vec_len (expired) = 0;
3852 vnet_lisp_stats_enable_disable (u8 enable)
3854 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3856 if (vnet_lisp_enable_disable_status () == 0)
3857 return VNET_API_ERROR_LISP_DISABLED;
3860 lcm->flags |= LISP_FLAG_STATS_ENABLED;
3862 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
3868 vnet_lisp_stats_enable_disable_state (void)
3870 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3872 if (vnet_lisp_enable_disable_status () == 0)
3873 return VNET_API_ERROR_LISP_DISABLED;
3875 return lcm->flags & LISP_FLAG_STATS_ENABLED;
3879 VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
3880 .function = send_map_resolver_service,
3881 .type = VLIB_NODE_TYPE_PROCESS,
3882 .name = "lisp-retry-service",
3883 .process_log2_n_stack_bytes = 16,
3887 VLIB_INIT_FUNCTION (lisp_cp_init);
3890 * fd.io coding-style-patch-verification: ON
3893 * eval: (c-set-style "gnu")