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>
25 #include <vnet/ethernet/arp_packet.h>
26 #include <vnet/ethernet/packet.h>
28 #include <openssl/evp.h>
29 #include <openssl/hmac.h>
31 #define MAX_VALUE_U24 0xffffff
33 /* mapping timer control constants (in seconds) */
34 #define TIME_UNTIL_REFETCH_OR_DELETE 20
35 #define MAPPING_TIMEOUT (((m->ttl) * 60) - TIME_UNTIL_REFETCH_OR_DELETE)
37 lisp_cp_main_t lisp_control_main;
39 u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
40 static void *send_map_request_thread_fn (void *arg);
44 LISP_CP_INPUT_NEXT_DROP,
46 } lisp_cp_input_next_t;
57 vnet_lisp_get_map_request_mode (void)
59 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
60 return lcm->map_request_mode;
64 auth_data_len_by_key_id (lisp_key_type_t key_id)
69 return SHA1_AUTH_DATA_LEN;
70 case HMAC_SHA_256_128:
71 return SHA256_AUTH_DATA_LEN;
73 clib_warning ("unsupported key type: %d!", key_id);
80 get_encrypt_fcn (lisp_key_type_t key_id)
86 case HMAC_SHA_256_128:
89 clib_warning ("unsupported encryption key type: %d!", key_id);
96 queue_map_request (gid_address_t * seid, gid_address_t * deid,
97 u8 smr_invoked, u8 is_resend);
99 ip_interface_address_t *
100 ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
101 u32 sw_if_index, u8 loop)
103 vnet_main_t *vnm = vnet_get_main ();
104 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
105 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
106 sw_if_index = swif->unnumbered_sw_if_index;
108 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
109 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
111 return pool_elt_at_index ((lm)->if_address_pool, ia);
115 ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
118 ip_interface_address_t *ia;
120 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
123 return ip_interface_address_get_address (lm, ia);
127 ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
128 u8 version, ip_address_t * result)
130 ip_lookup_main_t *lm;
133 lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
134 addr = ip_interface_get_first_address (lm, sw_if_index, version);
138 ip_address_set (result, addr, version);
143 * convert from a LISP address to a FIB prefix
146 ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
148 if (addr->version == IP4)
151 prefix->fp_proto = FIB_PROTOCOL_IP4;
152 memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
153 memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
157 prefix->fp_len = 128;
158 prefix->fp_proto = FIB_PROTOCOL_IP6;
159 memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
164 * convert from a LISP to a FIB prefix
167 ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
168 fib_prefix_t * fib_prefix)
170 ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
171 fib_prefix->fp_len = ip_prefix->len;
175 * Find the sw_if_index of the interface that would be used to egress towards
179 ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
181 fib_node_index_t fei;
184 ip_address_to_fib_prefix (dst, &prefix);
186 fei = fib_table_lookup (0, &prefix);
188 return (fib_entry_get_resolving_interface (fei));
192 * Find first IP of the interface that would be used to egress towards dst.
193 * Returns 1 if the address is found 0 otherwise.
196 ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
197 ip_address_t * result)
200 ip_lookup_main_t *lm;
204 ASSERT (result != 0);
206 ipver = ip_addr_version (dst);
208 lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
209 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
214 /* find the first ip address */
215 addr = ip_interface_get_first_address (lm, si, ipver);
219 ip_address_set (result, addr, ipver);
224 dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add,
225 u8 with_default_route)
231 dp_table = hash_get (lcm->table_id_by_vni, vni);
235 clib_warning ("vni %d not associated to a vrf!", vni);
236 return VNET_API_ERROR_INVALID_VALUE;
241 dp_table = hash_get (lcm->bd_id_by_vni, vni);
244 clib_warning ("vni %d not associated to a bridge domain!", vni);
245 return VNET_API_ERROR_INVALID_VALUE;
249 /* enable/disable data-plane interface */
253 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
255 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0],
261 lisp_gpe_tenant_l2_iface_unlock (vni);
263 lisp_gpe_tenant_l3_iface_unlock (vni);
270 dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 dst_map_index)
272 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
275 memset (a, 0, sizeof (*a));
277 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
281 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
283 /* delete dp fwd entry */
286 a->locator_pairs = fe->locator_pairs;
287 a->vni = gid_address_vni (&fe->reid);
288 gid_address_copy (&a->rmt_eid, &fe->reid);
290 gid_address_copy (&a->lcl_eid, &fe->leid);
292 vnet_lisp_gpe_del_fwd_counters (a, feip[0]);
293 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
295 /* delete entry in fwd table */
296 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
297 vec_free (fe->locator_pairs);
298 pool_put (lcm->fwd_entry_pool, fe);
302 * Finds first remote locator with best (lowest) priority that has a local
303 * peer locator with an underlying route to it.
307 get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
308 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
310 u32 i, limitp = 0, li, found = 0, esi;
311 locator_set_t *rmt_ls, *lcl_ls;
312 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
313 locator_t *lp, *rmt = 0;
318 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
320 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
322 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
329 /* find unvisited remote locator with best priority */
330 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
332 if (0 != hash_get (checked, i))
335 li = vec_elt (rmt_ls->locator_indices, i);
336 lp = pool_elt_at_index (lcm->locator_pool, li);
338 /* we don't support non-IP locators for now */
339 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
342 if ((found && lp->priority == limitp)
343 || (!found && lp->priority >= limitp))
347 /* don't search for locators with lower priority and don't
348 * check this locator again*/
349 limitp = lp->priority;
350 hash_set (checked, i, 1);
354 /* check if a local locator with a route to remote locator exists */
357 /* find egress sw_if_index for rmt locator */
359 ip_fib_get_egress_iface_for_dst (lcm,
360 &gid_address_ip (&rmt->address));
361 if ((u32) ~ 0 == esi)
364 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
366 li = vec_elt (lcl_ls->locator_indices, i);
367 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
369 /* found local locator with the needed sw_if_index */
370 if (sl->sw_if_index == esi)
372 /* and it has an address */
373 if (0 == ip_interface_get_first_ip_address (lcm,
375 gid_address_ip_version
380 memset (&pair, 0, sizeof (pair));
381 ip_address_copy (&pair.rmt_loc,
382 &gid_address_ip (&rmt->address));
383 ip_address_copy (&pair.lcl_loc, lcl_addr);
384 pair.weight = rmt->weight;
385 pair.priority = rmt->priority;
386 vec_add1 (locator_pairs[0], pair);
400 gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
403 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
407 switch (fid_addr_type (fid))
409 case FID_ADDR_IP_PREF:
410 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
411 gid_address_ippref (dst) = fid_addr_ippref (fid);
414 gid_address_type (dst) = GID_ADDR_MAC;
415 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
418 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
424 vnet_lisp_map_register_state_get (void)
426 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
427 return lcm->map_registering;
431 vnet_lisp_rloc_probe_state_get (void)
433 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
434 return lcm->rloc_probing;
438 dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
440 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
441 gid_address_t *rmt_eid, *lcl_eid;
442 mapping_t *lcl_map, *rmt_map;
443 u32 sw_if_index, **rmts, rmts_idx;
444 uword *feip = 0, *dpid, *rmts_stored_idxp = 0;
446 u8 type, is_src_dst = 0;
449 memset (a, 0, sizeof (*a));
451 /* remove entry if it already exists */
452 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
454 dp_del_fwd_entry (lcm, dst_map_index);
457 * Determine local mapping and eid
459 if (lcm->flags & LISP_FLAG_PITR_MODE)
461 if (lcm->pitr_map_index != ~0)
462 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
465 clib_warning ("no PITR mapping configured!");
470 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
471 lcl_eid = &lcl_map->eid;
474 * Determine remote mapping and eid
476 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
477 rmt_eid = &rmt_map->eid;
480 * Build and insert data plane forwarding entry
484 if (MR_MODE_SRC_DST == lcm->map_request_mode)
486 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
488 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
489 &gid_address_sd_dst (rmt_eid));
490 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
491 &gid_address_sd_src (rmt_eid));
495 gid_address_copy (&a->rmt_eid, rmt_eid);
496 gid_address_copy (&a->lcl_eid, lcl_eid);
501 gid_address_copy (&a->rmt_eid, rmt_eid);
503 a->vni = gid_address_vni (&a->rmt_eid);
504 a->is_src_dst = is_src_dst;
506 /* get vrf or bd_index associated to vni */
507 type = gid_address_type (&a->rmt_eid);
508 if (GID_ADDR_IP_PREFIX == type)
510 dpid = hash_get (lcm->table_id_by_vni, a->vni);
513 clib_warning ("vni %d not associated to a vrf!", a->vni);
516 a->table_id = dpid[0];
518 else if (GID_ADDR_MAC == type)
520 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
523 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
529 /* find best locator pair that 1) verifies LISP policy 2) are connected */
530 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
532 /* Either rmt mapping is negative or we can't find underlay path.
533 * Try again with petr if configured */
534 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
536 rmt_map = lisp_get_petr_mapping (lcm);
537 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
544 a->action = rmt_map->action;
547 rv = vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
550 if (a->locator_pairs)
551 vec_free (a->locator_pairs);
555 /* add tunnel to fwd entry table */
556 pool_get (lcm->fwd_entry_pool, fe);
557 vnet_lisp_gpe_add_fwd_counters (a, fe - lcm->fwd_entry_pool);
559 fe->locator_pairs = a->locator_pairs;
560 gid_address_copy (&fe->reid, &a->rmt_eid);
563 gid_address_copy (&fe->leid, &a->lcl_eid);
565 gid_address_copy (&fe->leid, lcl_eid);
567 fe->is_src_dst = is_src_dst;
568 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
569 fe - lcm->fwd_entry_pool);
571 /* Add rmt mapping to the vector of adjacent mappings to lcl mapping */
573 hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index);
574 if (!rmts_stored_idxp)
576 pool_get (lcm->lcl_to_rmt_adjacencies, rmts);
577 memset (rmts, 0, sizeof (*rmts));
578 rmts_idx = rmts - lcm->lcl_to_rmt_adjacencies;
579 hash_set (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index, rmts_idx);
583 rmts_idx = (u32) (*rmts_stored_idxp);
584 rmts = pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idx);
586 vec_add1 (rmts[0], dst_map_index);
593 } fwd_entry_mt_arg_t;
596 dp_add_fwd_entry_thread_fn (void *arg)
598 fwd_entry_mt_arg_t *a = arg;
599 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
600 dp_add_fwd_entry (lcm, a->si, a->di);
605 dp_add_fwd_entry_from_mt (u32 si, u32 di)
607 fwd_entry_mt_arg_t a;
609 memset (&a, 0, sizeof (a));
613 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
614 (u8 *) & a, sizeof (a));
619 * Returns vector of adjacencies.
621 * The caller must free the vector returned by this function.
623 * @param vni virtual network identifier
624 * @return vector of adjacencies
627 vnet_lisp_adjacencies_get_by_vni (u32 vni)
629 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
631 lisp_adjacency_t *adjs = 0, adj;
634 pool_foreach(fwd, lcm->fwd_entry_pool,
636 if (gid_address_vni (&fwd->reid) != vni)
639 gid_address_copy (&adj.reid, &fwd->reid);
640 gid_address_copy (&adj.leid, &fwd->leid);
641 vec_add1 (adjs, adj);
649 get_map_server (ip_address_t * a)
651 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
654 vec_foreach (m, lcm->map_servers)
656 if (!ip_address_cmp (&m->address, a))
665 get_map_resolver (ip_address_t * a)
667 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
670 vec_foreach (m, lcm->map_resolvers)
672 if (!ip_address_cmp (&m->address, a))
681 vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
684 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
685 lisp_msmr_t _ms, *ms = &_ms;
687 if (vnet_lisp_enable_disable_status () == 0)
689 clib_warning ("LISP is disabled!");
690 return VNET_API_ERROR_LISP_DISABLED;
695 if (get_map_server (addr))
697 clib_warning ("map-server %U already exists!", format_ip_address,
702 memset (ms, 0, sizeof (*ms));
703 ip_address_copy (&ms->address, addr);
704 vec_add1 (lcm->map_servers, ms[0]);
706 if (vec_len (lcm->map_servers) == 1)
707 lcm->do_map_server_election = 1;
711 for (i = 0; i < vec_len (lcm->map_servers); i++)
713 ms = vec_elt_at_index (lcm->map_servers, i);
714 if (!ip_address_cmp (&ms->address, addr))
716 if (!ip_address_cmp (&ms->address, &lcm->active_map_server))
717 lcm->do_map_server_election = 1;
719 vec_del1 (lcm->map_servers, i);
729 * Add/remove mapping to/from map-cache. Overwriting not allowed.
732 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
733 u32 * map_index_result)
735 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
736 u32 mi, *map_indexp, map_index, i;
737 u32 **rmts = 0, *remote_idxp, rmts_itr, remote_idx;
739 mapping_t *m, *old_map;
742 if (gid_address_type (&a->eid) == GID_ADDR_NSH)
744 if (gid_address_vni (&a->eid) != 0)
746 clib_warning ("Supported only default VNI for NSH!");
747 return VNET_API_ERROR_INVALID_ARGUMENT;
749 if (gid_address_nsh_spi (&a->eid) > MAX_VALUE_U24)
751 clib_warning ("SPI is greater than 24bit!");
752 return VNET_API_ERROR_INVALID_ARGUMENT;
756 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
757 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
760 /* TODO check if overwriting and take appropriate actions */
761 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
763 clib_warning ("eid %U found in the eid-table", format_gid_address,
765 return VNET_API_ERROR_VALUE_EXIST;
768 pool_get (lcm->mapping_pool, m);
769 gid_address_copy (&m->eid, &a->eid);
770 m->locator_set_index = a->locator_set_index;
772 m->action = a->action;
774 m->is_static = a->is_static;
775 m->key = vec_dup (a->key);
776 m->key_id = a->key_id;
778 map_index = m - lcm->mapping_pool;
779 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
782 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
784 clib_warning ("Locator set with index %d doesn't exist",
785 a->locator_set_index);
786 return VNET_API_ERROR_INVALID_VALUE;
789 /* add eid to list of eids supported by locator-set */
790 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
791 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
792 a->locator_set_index);
793 vec_add1 (eid_indexes[0], map_index);
798 vec_add1 (lcm->local_mappings_indexes, map_index);
800 map_index_result[0] = map_index;
804 if (mi == GID_LOOKUP_MISS)
806 clib_warning ("eid %U not found in the eid-table",
807 format_gid_address, &a->eid);
808 return VNET_API_ERROR_INVALID_VALUE;
811 /* clear locator-set to eids binding */
812 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
813 a->locator_set_index);
814 for (i = 0; i < vec_len (eid_indexes[0]); i++)
816 map_indexp = vec_elt_at_index (eid_indexes[0], i);
817 if (map_indexp[0] == mi)
820 vec_del1 (eid_indexes[0], i);
822 /* remove local mark if needed */
823 m = pool_elt_at_index (lcm->mapping_pool, mi);
826 /* Remove adjacencies associated with the local mapping */
827 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
831 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
832 vec_foreach (remote_idxp, rmts[0])
834 dp_del_fwd_entry (lcm, remote_idxp[0]);
837 pool_put (lcm->lcl_to_rmt_adjacencies, rmts);
838 hash_unset (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
842 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
844 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
845 if (lm_indexp[0] == mi)
848 vec_del1 (lcm->local_mappings_indexes, k);
852 /* Remove remote (if present) from the vectors of lcl-to-rmts
853 * TODO: Address this in a more efficient way.
856 pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies,
858 vec_foreach_index (rmts_itr, rmts[0])
860 remote_idx = vec_elt (rmts[0], rmts_itr);
861 if (mi == remote_idx)
863 vec_del1 (rmts[0], rmts_itr);
871 /* remove mapping from dictionary */
872 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
873 gid_address_free (&m->eid);
874 pool_put_index (lcm->mapping_pool, mi);
881 * Add/update/delete mapping to/in/from map-cache.
884 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
885 u32 * map_index_result)
891 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
893 if (vnet_lisp_enable_disable_status () == 0)
895 clib_warning ("LISP is disabled!");
896 return VNET_API_ERROR_LISP_DISABLED;
899 vni = gid_address_vni (&a->eid);
900 type = gid_address_type (&a->eid);
901 if (GID_ADDR_IP_PREFIX == type)
902 dp_table = hash_get (lcm->table_id_by_vni, vni);
903 else if (GID_ADDR_MAC == type)
904 dp_table = hash_get (lcm->bd_id_by_vni, vni);
906 if (!dp_table && GID_ADDR_NSH != type)
908 clib_warning ("vni %d not associated to a %s!", vni,
909 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
910 return VNET_API_ERROR_INVALID_VALUE;
913 /* store/remove mapping from map-cache */
914 return vnet_lisp_map_cache_add_del (a, map_index_result);
918 add_l2_arp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
921 u32 version = (u32) kvp->key[0];
925 u32 bd = (u32) (kvp->key[0] >> 32);
926 hash_set (ht[0], bd, 0);
930 vnet_lisp_l2_arp_bds_get (void)
932 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
935 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
936 add_l2_arp_bd, &bds);
941 add_ndp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
944 u32 version = (u32) kvp->key[0];
948 u32 bd = (u32) (kvp->key[0] >> 32);
949 hash_set (ht[0], bd, 0);
953 vnet_lisp_ndp_bds_get (void)
955 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
958 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
967 } lisp_add_l2_arp_ndp_args_t;
970 add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
972 lisp_add_l2_arp_ndp_args_t *a = arg;
973 lisp_api_l2_arp_entry_t **vector = a->vector, e;
975 u32 version = (u32) kvp->key[0];
979 u32 bd = (u32) (kvp->key[0] >> 32);
983 mac_copy (e.mac, (void *) &kvp->value);
984 e.ip4 = (u32) kvp->key[1];
985 vec_add1 (vector[0], e);
989 lisp_api_l2_arp_entry_t *
990 vnet_lisp_l2_arp_entries_get_by_bd (u32 bd)
992 lisp_api_l2_arp_entry_t *entries = 0;
993 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
994 lisp_add_l2_arp_ndp_args_t a;
999 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
1000 add_l2_arp_entry, &a);
1005 add_ndp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
1007 lisp_add_l2_arp_ndp_args_t *a = arg;
1008 lisp_api_ndp_entry_t **vector = a->vector, e;
1010 u32 version = (u32) kvp->key[0];
1014 u32 bd = (u32) (kvp->key[0] >> 32);
1018 mac_copy (e.mac, (void *) &kvp->value);
1019 clib_memcpy (e.ip6, &kvp->key[1], 16);
1020 vec_add1 (vector[0], e);
1024 lisp_api_ndp_entry_t *
1025 vnet_lisp_ndp_entries_get_by_bd (u32 bd)
1027 lisp_api_ndp_entry_t *entries = 0;
1028 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1029 lisp_add_l2_arp_ndp_args_t a;
1031 a.vector = &entries;
1034 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
1040 vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac, u8 is_add)
1042 if (vnet_lisp_enable_disable_status () == 0)
1044 clib_warning ("LISP is disabled!");
1045 return VNET_API_ERROR_LISP_DISABLED;
1048 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1051 u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key);
1054 if (res != GID_LOOKUP_MISS_L2)
1056 clib_warning ("Entry %U exists in DB!", format_gid_address, key);
1057 return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
1059 u64 val = mac_to_u64 (mac);
1060 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val,
1065 if (res == GID_LOOKUP_MISS_L2)
1067 clib_warning ("ONE entry %U not found - cannot delete!",
1068 format_gid_address, key);
1071 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0,
1079 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
1081 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1082 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
1084 if (vnet_lisp_enable_disable_status () == 0)
1086 clib_warning ("LISP is disabled!");
1087 return VNET_API_ERROR_LISP_DISABLED;
1090 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
1091 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
1093 if (!is_l2 && (vni == 0 || dp_id == 0))
1095 clib_warning ("can't add/del default vni-vrf mapping!");
1099 dp_idp = hash_get (dp_table_by_vni[0], vni);
1100 vnip = hash_get (vni_by_dp_table[0], dp_id);
1106 clib_warning ("vni %d or vrf %d already used in vrf/vni "
1107 "mapping!", vni, dp_id);
1110 hash_set (dp_table_by_vni[0], vni, dp_id);
1111 hash_set (vni_by_dp_table[0], dp_id, vni);
1113 /* create dp iface */
1114 dp_add_del_iface (lcm, vni, is_l2, 1 /* is_add */ ,
1115 1 /* with_default_route */ );
1119 if (!dp_idp || !vnip)
1121 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
1122 "mapping!", vni, dp_id);
1125 /* remove dp iface */
1126 dp_add_del_iface (lcm, vni, is_l2, 0 /* is_add */ , 0 /* unused */ );
1128 hash_unset (dp_table_by_vni[0], vni);
1129 hash_unset (vni_by_dp_table[0], dp_id);
1135 /* return 0 if the two locator sets are identical 1 otherwise */
1137 compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
1138 locator_t * new_locators)
1141 locator_t *old_loc, *new_loc;
1143 if (vec_len (old_ls_indexes) != vec_len (new_locators))
1146 for (i = 0; i < vec_len (new_locators); i++)
1148 old_li = vec_elt (old_ls_indexes, i);
1149 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
1151 new_loc = vec_elt_at_index (new_locators, i);
1153 if (locator_cmp (old_loc, new_loc))
1163 gid_address_t *eids_to_be_deleted;
1164 } remove_mapping_args_t;
1167 * Callback invoked when a sub-prefix is found
1170 remove_mapping_if_needed (u32 mi, void *arg)
1173 remove_mapping_args_t *a = arg;
1174 lisp_cp_main_t *lcm = a->lcm;
1178 m = pool_elt_at_index (lcm->mapping_pool, mi);
1182 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
1186 if (0 != vec_len (ls->locator_indices))
1191 if (0 == vec_len (ls->locator_indices))
1196 vec_add1 (a->eids_to_be_deleted, m->eid);
1200 * This function searches map cache and looks for IP prefixes that are subset
1201 * of the provided one. If such prefix is found depending on 'is_negative'
1204 * 1) if is_negative is true and found prefix points to positive mapping,
1205 * then the mapping is removed
1206 * 2) if is_negative is false and found prefix points to negative mapping,
1207 * then the mapping is removed
1210 remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
1214 remove_mapping_args_t a;
1216 memset (&a, 0, sizeof (a));
1218 /* do this only in src/dst mode ... */
1219 if (MR_MODE_SRC_DST != lcm->map_request_mode)
1222 /* ... and only for IP prefix */
1223 if (GID_ADDR_SRC_DST != gid_address_type (eid)
1224 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
1227 a.is_negative = is_negative;
1230 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
1231 remove_mapping_if_needed, &a);
1233 vec_foreach (e, a.eids_to_be_deleted)
1235 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
1237 memset (adj_args, 0, sizeof (adj_args[0]));
1238 gid_address_copy (&adj_args->reid, e);
1239 adj_args->is_add = 0;
1240 if (vnet_lisp_add_del_adjacency (adj_args))
1241 clib_warning ("failed to del adjacency!");
1243 vnet_lisp_del_mapping (e, NULL);
1246 vec_free (a.eids_to_be_deleted);
1250 mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
1252 timing_wheel_delete (&lcm->wheel, mi);
1256 is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
1258 fib_node_index_t fei;
1259 fib_prefix_t prefix;
1260 fib_entry_flag_t flags;
1262 ip_address_to_fib_prefix (addr, &prefix);
1264 fei = fib_table_lookup (0, &prefix);
1265 flags = fib_entry_get_flags (fei);
1266 return (FIB_ENTRY_FLAG_LOCAL & flags);
1270 * Adds/updates mapping. Does not program forwarding.
1272 * @param a parameters of the new mapping
1273 * @param rlocs vector of remote locators
1274 * @param res_map_index index of the newly created mapping
1275 * @param locators_changed indicator if locators were updated in the mapping
1276 * @return return code
1279 vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
1281 u32 * res_map_index, u8 * is_updated)
1283 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1284 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1285 u32 mi, ls_index = 0, dst_map_index;
1289 if (vnet_lisp_enable_disable_status () == 0)
1291 clib_warning ("LISP is disabled!");
1292 return VNET_API_ERROR_LISP_DISABLED;
1296 res_map_index[0] = ~0;
1300 memset (ls_args, 0, sizeof (ls_args[0]));
1302 ls_args->locators = rlocs;
1303 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
1304 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1306 /* check if none of the locators match localy configured address */
1307 vec_foreach (loc, rlocs)
1309 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1310 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1312 clib_warning ("RLOC %U matches a local address!",
1313 format_gid_address, &loc->address);
1314 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1318 /* overwrite: if mapping already exists, decide if locators should be
1319 * updated and be done */
1320 if (old_map && gid_address_cmp (&old_map->eid, &a->eid) == 0)
1322 if (!a->is_static && (old_map->is_static || old_map->local))
1324 /* do not overwrite local or static remote mappings */
1325 clib_warning ("mapping %U rejected due to collision with local "
1326 "or static remote mapping!", format_gid_address,
1331 locator_set_t *old_ls;
1333 /* update mapping attributes */
1334 old_map->action = a->action;
1335 if (old_map->action != a->action && NULL != is_updated)
1338 old_map->authoritative = a->authoritative;
1339 old_map->ttl = a->ttl;
1341 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1342 old_map->locator_set_index);
1343 if (compare_locators (lcm, old_ls->locator_indices, ls_args->locators))
1345 /* set locator-set index to overwrite */
1346 ls_args->is_add = 1;
1347 ls_args->index = old_map->locator_set_index;
1348 vnet_lisp_add_del_locator_set (ls_args, 0);
1353 res_map_index[0] = mi;
1360 remove_overlapping_sub_prefixes (lcm, &a->eid, 0 == ls_args->locators);
1362 ls_args->is_add = 1;
1363 ls_args->index = ~0;
1365 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1369 a->locator_set_index = ls_index;
1370 vnet_lisp_map_cache_add_del (a, &dst_map_index);
1373 res_map_index[0] = dst_map_index;
1381 * Removes a mapping. Does not program forwarding.
1383 * @param eid end-host indetifier
1384 * @param res_map_index index of the removed mapping
1385 * @return return code
1388 vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index)
1390 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1391 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1392 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1396 memset (ls_args, 0, sizeof (ls_args[0]));
1397 memset (m_args, 0, sizeof (m_args[0]));
1399 res_map_index[0] = ~0;
1401 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1402 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1404 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1406 clib_warning ("cannot delete mapping for eid %U",
1407 format_gid_address, eid);
1412 gid_address_copy (&m_args->eid, eid);
1413 m_args->locator_set_index = old_map->locator_set_index;
1415 /* delete mapping associated from map-cache */
1416 vnet_lisp_map_cache_add_del (m_args, 0);
1418 ls_args->is_add = 0;
1419 ls_args->index = old_map->locator_set_index;
1421 /* delete locator set */
1422 vnet_lisp_add_del_locator_set (ls_args, 0);
1424 /* delete timer associated to the mapping if any */
1425 if (old_map->timer_set)
1426 mapping_delete_timer (lcm, mi);
1428 /* return old mapping index */
1430 res_map_index[0] = mi;
1437 vnet_lisp_clear_all_remote_adjacencies (void)
1440 u32 mi, *map_indices = 0, *map_indexp;
1441 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1442 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1443 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1446 pool_foreach_index (mi, lcm->mapping_pool,
1448 vec_add1 (map_indices, mi);
1452 vec_foreach (map_indexp, map_indices)
1454 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1457 dp_del_fwd_entry (lcm, map_indexp[0]);
1459 dm_args->is_add = 0;
1460 gid_address_copy (&dm_args->eid, &map->eid);
1461 dm_args->locator_set_index = map->locator_set_index;
1463 /* delete mapping associated to fwd entry */
1464 vnet_lisp_map_cache_add_del (dm_args, 0);
1468 ls->index = map->locator_set_index;
1469 /* delete locator set */
1470 rv = vnet_lisp_add_del_locator_set (ls, 0);
1478 vec_free (map_indices);
1483 * Adds adjacency or removes forwarding entry associated to remote mapping.
1484 * Note that adjacencies are not stored, they only result in forwarding entries
1488 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1490 lisp_cp_main_t *lcm = &lisp_control_main;
1491 u32 local_mi, remote_mi = ~0;
1493 if (vnet_lisp_enable_disable_status () == 0)
1495 clib_warning ("LISP is disabled!");
1496 return VNET_API_ERROR_LISP_DISABLED;
1499 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1500 &a->reid, &a->leid);
1501 if (GID_LOOKUP_MISS == remote_mi)
1503 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1504 format_gid_address, &a->reid);
1511 /* check if source eid has an associated mapping. If pitr mode is on,
1512 * just use the pitr's mapping */
1513 if (lcm->flags & LISP_FLAG_PITR_MODE)
1515 if (lcm->pitr_map_index != ~0)
1517 local_mi = lcm->pitr_map_index;
1521 /* PITR mode is on, but no mapping is configured */
1527 if (gid_address_type (&a->reid) == GID_ADDR_NSH)
1529 if (lcm->nsh_map_index == ~0)
1530 local_mi = GID_LOOKUP_MISS;
1532 local_mi = lcm->nsh_map_index;
1536 local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1541 if (GID_LOOKUP_MISS == local_mi)
1543 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1544 format_gid_address, &a->leid);
1549 /* update forwarding */
1550 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1553 dp_del_fwd_entry (lcm, remote_mi);
1559 vnet_lisp_set_map_request_mode (u8 mode)
1561 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1563 if (vnet_lisp_enable_disable_status () == 0)
1565 clib_warning ("LISP is disabled!");
1566 return VNET_API_ERROR_LISP_DISABLED;
1569 if (mode >= _MR_MODE_MAX)
1571 clib_warning ("Invalid LISP map request mode %d!", mode);
1572 return VNET_API_ERROR_INVALID_ARGUMENT;
1575 lcm->map_request_mode = mode;
1580 vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
1582 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1583 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
1584 u32 locator_set_index = ~0;
1588 if (vnet_lisp_enable_disable_status () == 0)
1590 clib_warning ("LISP is disabled!");
1591 return VNET_API_ERROR_LISP_DISABLED;
1596 if (lcm->nsh_map_index == (u32) ~ 0)
1598 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1601 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1604 locator_set_index = p[0];
1606 pool_get (lcm->mapping_pool, m);
1607 memset (m, 0, sizeof *m);
1608 m->locator_set_index = locator_set_index;
1611 lcm->nsh_map_index = m - lcm->mapping_pool;
1613 if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
1619 if (lcm->nsh_map_index != (u32) ~ 0)
1621 /* remove NSH mapping */
1622 pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
1623 lcm->nsh_map_index = ~0;
1624 vnet_lisp_gpe_del_nsh_iface (lgm);
1631 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1633 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1634 u32 locator_set_index = ~0;
1638 if (vnet_lisp_enable_disable_status () == 0)
1640 clib_warning ("LISP is disabled!");
1641 return VNET_API_ERROR_LISP_DISABLED;
1644 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1647 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1650 locator_set_index = p[0];
1654 pool_get (lcm->mapping_pool, m);
1655 m->locator_set_index = locator_set_index;
1658 lcm->pitr_map_index = m - lcm->mapping_pool;
1662 /* remove pitr mapping */
1663 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1664 lcm->pitr_map_index = ~0;
1670 vnet_lisp_map_register_fallback_threshold_set (u32 value)
1672 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1675 return VNET_API_ERROR_INVALID_ARGUMENT;
1678 lcm->max_expired_map_registers = value;
1683 vnet_lisp_map_register_fallback_threshold_get (void)
1685 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1686 return lcm->max_expired_map_registers;
1690 * Configure Proxy-ETR
1692 * @param ip PETR's IP address
1693 * @param is_add Flag that indicates if this is an addition or removal
1695 * return 0 on success
1698 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1700 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1703 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1706 if (vnet_lisp_enable_disable_status () == 0)
1708 clib_warning ("LISP is disabled!");
1709 return VNET_API_ERROR_LISP_DISABLED;
1712 memset (ls_args, 0, sizeof (*ls_args));
1716 /* Create dummy petr locator-set */
1717 memset (&loc, 0, sizeof (loc));
1718 gid_address_from_ip (&loc.address, ip);
1720 loc.state = loc.weight = 1;
1723 ls_args->is_add = 1;
1724 ls_args->index = ~0;
1725 vec_add1 (ls_args->locators, loc);
1726 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1728 /* Add petr mapping */
1729 pool_get (lcm->mapping_pool, m);
1730 m->locator_set_index = ls_index;
1731 lcm->petr_map_index = m - lcm->mapping_pool;
1733 /* Enable use-petr */
1734 lcm->flags |= LISP_FLAG_USE_PETR;
1738 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1740 /* Remove petr locator */
1741 ls_args->is_add = 0;
1742 ls_args->index = m->locator_set_index;
1743 vnet_lisp_add_del_locator_set (ls_args, 0);
1745 /* Remove petr mapping */
1746 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1748 /* Disable use-petr */
1749 lcm->flags &= ~LISP_FLAG_USE_PETR;
1750 lcm->petr_map_index = ~0;
1755 /* cleans locator to locator-set data and removes locators not part of
1756 * any locator-set */
1758 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1760 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1761 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1762 for (i = 0; i < vec_len (ls->locator_indices); i++)
1764 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1765 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1767 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1769 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1770 if (ls_indexp[0] == lsi)
1774 /* delete index for removed locator-set */
1775 vec_del1 (ls_indexes[0], j);
1777 /* delete locator if it's part of no locator-set */
1778 if (vec_len (ls_indexes[0]) == 0)
1780 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1781 vec_add1 (to_be_deleted, i);
1787 for (i = 0; i < vec_len (to_be_deleted); i++)
1789 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1790 vec_del1 (ls->locator_indices, loc_indexp[0]);
1792 vec_free (to_be_deleted);
1796 static inline uword *
1797 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1799 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1804 /* find locator-set */
1808 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1819 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1825 ASSERT (ls != NULL);
1826 ASSERT (loc != NULL);
1828 vec_foreach (locit, ls->locator_indices)
1830 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1831 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1832 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1834 clib_warning ("Duplicate locator");
1835 return VNET_API_ERROR_VALUE_EXIST;
1843 update_adjacencies_by_map_index (lisp_cp_main_t * lcm,
1844 u32 mapping_index, u8 remove_only)
1848 uword *fei = 0, *rmts_idxp = 0;
1849 u32 **rmts = 0, *remote_idxp = 0, *rmts_copy = 0;
1850 vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
1851 memset (a, 0, sizeof (*a));
1853 map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
1857 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mapping_index);
1861 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
1862 rmts_copy = vec_dup (rmts[0]);
1864 vec_foreach (remote_idxp, rmts_copy)
1866 fei = hash_get (lcm->fwd_entry_by_mapping_index, remote_idxp[0]);
1870 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1872 gid_address_copy (&a->leid, &fwd->leid);
1873 gid_address_copy (&a->reid, &fwd->reid);
1874 vnet_lisp_add_del_adjacency (a);
1879 vnet_lisp_add_del_adjacency (a);
1882 vec_free (rmts_copy);
1887 fei = hash_get (lcm->fwd_entry_by_mapping_index, mapping_index);
1891 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1893 gid_address_copy (&a->leid, &fwd->leid);
1894 gid_address_copy (&a->reid, &fwd->reid);
1895 vnet_lisp_add_del_adjacency (a);
1900 vnet_lisp_add_del_adjacency (a);
1906 update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm,
1907 u32 ls_index, u8 remove_only)
1912 if (vec_len (lcm->locator_set_to_eids) <= ls_index)
1915 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
1917 for (i = 0; i < vec_len (eid_indexes[0]); i++)
1919 map_indexp = vec_elt_at_index (eid_indexes[0], i);
1920 update_adjacencies_by_map_index (lcm, map_indexp[0], remove_only);
1925 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1926 u32 ls_index, u32 loc_id)
1928 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1929 u32 **ls_indexes = NULL;
1931 ASSERT (ls != NULL);
1932 ASSERT (locit != NULL);
1934 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1935 pool_put_index (lcm->locator_pool, locit[0]);
1936 vec_del1 (ls->locator_indices, loc_id);
1937 vec_del1 (ls_indexes[0], ls_index);
1941 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1942 locator_set_t * ls, u32 * ls_result)
1944 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1945 locator_t *loc = NULL, *itloc = NULL;
1946 uword _p = (u32) ~ 0, *p = &_p;
1947 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1953 if (vnet_lisp_enable_disable_status () == 0)
1955 clib_warning ("LISP is disabled!");
1956 return VNET_API_ERROR_LISP_DISABLED;
1959 p = get_locator_set_index (a, p);
1962 clib_warning ("locator-set %v doesn't exist", a->name);
1963 return VNET_API_ERROR_INVALID_ARGUMENT;
1968 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1971 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1973 return VNET_API_ERROR_INVALID_ARGUMENT;
1980 ls_result[0] = p[0];
1982 /* allocate locators */
1983 vec_foreach (itloc, a->locators)
1985 ret = is_locator_in_locator_set (lcm, ls, itloc);
1991 pool_get (lcm->locator_pool, loc);
1993 loc_index = loc - lcm->locator_pool;
1995 vec_add1 (ls->locator_indices, loc_index);
1997 vec_validate (lcm->locator_to_locator_sets, loc_index);
1998 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
2000 vec_add1 (ls_indexes[0], p[0]);
2008 vec_foreach (itloc, a->locators)
2012 vec_foreach (locit, ls->locator_indices)
2014 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
2016 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
2019 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
2021 if (0 == loc->local &&
2022 !gid_address_cmp (&loc->address, &itloc->address))
2025 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
2030 /* update fwd entries using this locator in DP */
2031 update_fwd_entries_by_locator_set (lcm, ls_index,
2032 vec_len (ls->locator_indices)
2045 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
2048 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2050 uword _p = (u32) ~ 0, *p = &_p;
2055 if (vnet_lisp_enable_disable_status () == 0)
2057 clib_warning ("LISP is disabled!");
2058 return VNET_API_ERROR_LISP_DISABLED;
2063 p = get_locator_set_index (a, p);
2066 if (p && p[0] != (u32) ~ 0)
2068 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2071 clib_warning ("locator-set %d to be overwritten doesn't exist!",
2076 /* clean locator to locator-set vectors and remove locators if
2077 * they're not part of another locator-set */
2078 clean_locator_to_locator_set (lcm, p[0]);
2080 /* remove locator indices from locator set */
2081 vec_free (ls->locator_indices);
2086 ls_result[0] = p[0];
2088 /* new locator-set */
2091 pool_get (lcm->locator_set_pool, ls);
2092 memset (ls, 0, sizeof (*ls));
2093 ls_index = ls - lcm->locator_set_pool;
2097 ls->name = vec_dup (a->name);
2099 if (!lcm->locator_set_index_by_name)
2100 lcm->locator_set_index_by_name = hash_create_vec (
2108 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
2111 /* mark as local locator-set */
2112 vec_add1 (lcm->local_locator_set_indexes, ls_index);
2114 ls->local = a->local;
2116 ls_result[0] = ls_index;
2119 ret = vnet_lisp_add_del_locator (a, ls, NULL);
2127 p = get_locator_set_index (a, p);
2130 clib_warning ("locator-set %v doesn't exists", a->name);
2134 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2137 clib_warning ("locator-set with index %d doesn't exists", p[0]);
2141 if (lcm->mreq_itr_rlocs == p[0])
2143 clib_warning ("Can't delete the locator-set used to constrain "
2144 "the itr-rlocs in map-requests!");
2148 if (vec_len (lcm->locator_set_to_eids) != 0)
2150 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
2151 if (vec_len (eid_indexes[0]) != 0)
2154 ("Can't delete a locator that supports a mapping!");
2159 /* clean locator to locator-sets data */
2160 clean_locator_to_locator_set (lcm, p[0]);
2166 vec_foreach_index (it, lcm->local_locator_set_indexes)
2168 lsi = vec_elt (lcm->local_locator_set_indexes, it);
2171 vec_del1 (lcm->local_locator_set_indexes, it);
2175 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
2177 vec_free (ls->name);
2178 vec_free (ls->locator_indices);
2179 pool_put (lcm->locator_set_pool, ls);
2185 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
2187 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2189 lcm->rloc_probing = is_enable;
2194 vnet_lisp_map_register_enable_disable (u8 is_enable)
2196 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2198 lcm->map_registering = is_enable;
2203 lisp_cp_register_dst_port (vlib_main_t * vm)
2205 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
2206 lisp_cp_input_node.index, 1 /* is_ip4 */ );
2207 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
2208 lisp_cp_input_node.index, 0 /* is_ip4 */ );
2212 lisp_cp_unregister_dst_port (vlib_main_t * vm)
2214 udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp, 0 /* is_ip4 */ );
2215 udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp6, 1 /* is_ip4 */ );
2219 * lisp_cp_enable_l2_l3_ifaces
2221 * Enable all l2 and l3 ifaces
2224 lisp_cp_enable_l2_l3_ifaces (lisp_cp_main_t * lcm, u8 with_default_route)
2229 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
2230 dp_add_del_iface(lcm, vni, /* is_l2 */ 0, /* is_add */1,
2231 with_default_route);
2233 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
2234 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1,
2235 with_default_route);
2241 lisp_cp_disable_l2_l3_ifaces (lisp_cp_main_t * lcm)
2245 /* clear interface table */
2246 hash_free (lcm->fwd_entry_by_mapping_index);
2247 pool_free (lcm->fwd_entry_pool);
2248 /* Clear state tracking rmt-lcl fwd entries */
2250 pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
2255 hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
2256 pool_free (lcm->lcl_to_rmt_adjacencies);
2260 vnet_lisp_enable_disable (u8 is_enable)
2262 clib_error_t *error = 0;
2263 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2264 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
2266 a->is_en = is_enable;
2267 error = vnet_lisp_gpe_enable_disable (a);
2270 return clib_error_return (0, "failed to %s data-plane!",
2271 a->is_en ? "enable" : "disable");
2274 /* decide what to do based on mode */
2276 if (lcm->flags & LISP_FLAG_XTR_MODE)
2280 lisp_cp_register_dst_port (lcm->vlib_main);
2281 lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
2285 lisp_cp_unregister_dst_port (lcm->vlib_main);
2286 lisp_cp_disable_l2_l3_ifaces (lcm);
2290 if (lcm->flags & LISP_FLAG_PETR_MODE)
2292 /* if in xTR mode, the LISP ports were already (un)registered above */
2293 if (!(lcm->flags & LISP_FLAG_XTR_MODE))
2296 lisp_cp_register_dst_port (lcm->vlib_main);
2298 lisp_cp_unregister_dst_port (lcm->vlib_main);
2302 if (lcm->flags & LISP_FLAG_PITR_MODE)
2306 /* install interfaces, but no default routes */
2307 lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
2311 lisp_cp_disable_l2_l3_ifaces (lcm);
2315 /* update global flag */
2316 lcm->is_enabled = is_enable;
2322 vnet_lisp_enable_disable_status (void)
2324 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2325 return lcm->is_enabled;
2329 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
2331 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2333 lisp_msmr_t _mr, *mr = &_mr;
2335 if (vnet_lisp_enable_disable_status () == 0)
2337 clib_warning ("LISP is disabled!");
2338 return VNET_API_ERROR_LISP_DISABLED;
2344 if (get_map_resolver (&a->address))
2346 clib_warning ("map-resolver %U already exists!", format_ip_address,
2351 memset (mr, 0, sizeof (*mr));
2352 ip_address_copy (&mr->address, &a->address);
2353 vec_add1 (lcm->map_resolvers, *mr);
2355 if (vec_len (lcm->map_resolvers) == 1)
2356 lcm->do_map_resolver_election = 1;
2360 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
2362 mr = vec_elt_at_index (lcm->map_resolvers, i);
2363 if (!ip_address_cmp (&mr->address, &a->address))
2365 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
2366 lcm->do_map_resolver_election = 1;
2368 vec_del1 (lcm->map_resolvers, i);
2377 vnet_lisp_map_register_set_ttl (u32 ttl)
2379 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2380 lcm->map_register_ttl = ttl;
2385 vnet_lisp_map_register_get_ttl (void)
2387 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2388 return lcm->map_register_ttl;
2392 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
2394 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2397 if (vnet_lisp_enable_disable_status () == 0)
2399 clib_warning ("LISP is disabled!");
2400 return VNET_API_ERROR_LISP_DISABLED;
2405 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
2408 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
2409 return VNET_API_ERROR_INVALID_ARGUMENT;
2412 lcm->mreq_itr_rlocs = p[0];
2416 lcm->mreq_itr_rlocs = ~0;
2422 /* Statistics (not really errors) */
2423 #define foreach_lisp_cp_lookup_error \
2425 _(MAP_REQUESTS_SENT, "map-request sent") \
2426 _(ARP_REPLY_TX, "ARP replies sent") \
2427 _(NDP_NEIGHBOR_ADVERTISEMENT_TX, \
2428 "neighbor advertisement sent")
2430 static char *lisp_cp_lookup_error_strings[] = {
2431 #define _(sym,string) string,
2432 foreach_lisp_cp_lookup_error
2438 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
2439 foreach_lisp_cp_lookup_error
2441 LISP_CP_LOOKUP_N_ERROR,
2442 } lisp_cp_lookup_error_t;
2446 LISP_CP_LOOKUP_NEXT_DROP,
2447 LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
2448 LISP_CP_LOOKUP_N_NEXT,
2449 } lisp_cp_lookup_next_t;
2453 gid_address_t dst_eid;
2454 ip_address_t map_resolver_ip;
2455 } lisp_cp_lookup_trace_t;
2458 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
2460 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2461 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2462 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
2464 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
2465 format_ip_address, &t->map_resolver_ip, format_gid_address,
2471 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
2472 ip_address_t * sloc)
2477 if (vec_len (lcm->map_resolvers) == 0)
2479 clib_warning ("No map-resolver configured");
2483 /* find the first mr ip we have a route to and the ip of the
2484 * iface that has a route to it */
2485 vec_foreach (mrit, lcm->map_resolvers)
2488 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
2490 ip_address_copy (mr_ip, a);
2492 /* also update globals */
2497 clib_warning ("Can't find map-resolver and local interface ip!");
2501 static gid_address_t *
2502 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
2508 ip_interface_address_t *ia = 0;
2509 gid_address_t gid_data, *gid = &gid_data;
2510 gid_address_t *rlocs = 0;
2511 ip_prefix_t *ippref = &gid_address_ippref (gid);
2512 ip_address_t *rloc = &ip_prefix_addr (ippref);
2514 memset (gid, 0, sizeof (gid[0]));
2515 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
2516 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
2518 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
2519 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
2521 /* Add ipv4 locators first TODO sort them */
2524 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2525 loc->sw_if_index, 1 /* unnumbered */,
2527 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
2528 ip_address_set (rloc, addr, IP4);
2529 ip_prefix_len (ippref) = 32;
2530 ip_prefix_normalize (ippref);
2531 vec_add1 (rlocs, gid[0]);
2534 /* Add ipv6 locators */
2535 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2536 loc->sw_if_index, 1 /* unnumbered */,
2538 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
2539 ip_address_set (rloc, addr, IP6);
2540 ip_prefix_len (ippref) = 128;
2541 ip_prefix_normalize (ippref);
2542 vec_add1 (rlocs, gid[0]);
2550 static vlib_buffer_t *
2551 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
2552 ip_address_t * sloc, ip_address_t * rloc,
2553 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
2557 vlib_main_t *vm = lcm->vlib_main;
2559 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2561 clib_warning ("Can't allocate buffer for Map-Request!");
2565 b = vlib_get_buffer (vm, bi);
2567 /* leave some space for the encap headers */
2568 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2571 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2572 1 /* rloc probe */ , nonce_res);
2574 /* push outer ip header */
2575 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2583 static vlib_buffer_t *
2584 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2585 gid_address_t * seid, gid_address_t * deid,
2586 locator_set_t * loc_set, ip_address_t * mr_ip,
2587 ip_address_t * sloc, u8 is_smr_invoked,
2588 u64 * nonce_res, u32 * bi_res)
2592 gid_address_t *rlocs = 0;
2593 vlib_main_t *vm = lcm->vlib_main;
2595 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2597 clib_warning ("Can't allocate buffer for Map-Request!");
2601 b = vlib_get_buffer (vm, bi);
2604 /* leave some space for the encap headers */
2605 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2608 rlocs = build_itr_rloc_list (lcm, loc_set);
2610 if (MR_MODE_SRC_DST == lcm->map_request_mode
2611 && GID_ADDR_SRC_DST != gid_address_type (deid))
2614 memset (&sd, 0, sizeof (sd));
2615 build_src_dst (&sd, seid, deid);
2616 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2617 0 /* rloc probe */ , nonce_res);
2622 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2623 0 /* rloc probe */ , nonce_res);
2626 /* push ecm: udp-ip-lisp */
2627 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2629 /* push outer ip header */
2630 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2640 reset_pending_mr_counters (pending_map_request_t * r)
2642 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2646 #define foreach_msmr \
2652 elect_map_ ## name (lisp_cp_main_t * lcm) \
2655 vec_foreach (mr, lcm->map_ ## name ## s) \
2659 ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
2660 lcm->do_map_ ## name ## _election = 0; \
2669 free_map_register_records (mapping_t * maps)
2672 vec_foreach (map, maps) vec_free (map->locators);
2678 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2679 ip_address_t * probed_loc)
2682 locator_t *loc, new;
2683 ip_interface_address_t *ia = 0;
2685 ip_address_t *new_ip = &gid_address_ip (&new.address);
2688 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2690 vec_foreach (li, ls->locator_indices)
2692 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2697 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2698 loc->sw_if_index, 1 /* unnumbered */,
2700 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2702 ip_address_set (new_ip, addr, IP4);
2705 /* Add ipv6 locators */
2706 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2707 loc->sw_if_index, 1 /* unnumbered */,
2709 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2711 ip_address_set (new_ip, addr, IP6);
2715 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2718 vec_add1 (m->locators, new);
2723 build_map_register_record_list (lisp_cp_main_t * lcm)
2725 mapping_t *recs = 0, rec, *m;
2728 pool_foreach(m, lcm->mapping_pool,
2730 /* for now build only local mappings */
2735 add_locators (lcm, &rec, m->locator_set_index, NULL);
2736 vec_add1 (recs, rec);
2744 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2745 lisp_key_type_t key_id, u8 * key,
2746 u16 auth_data_len, u32 msg_len)
2748 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2749 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2751 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2752 (unsigned char *) map_reg_hdr, msg_len, NULL,
2754 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2759 static vlib_buffer_t *
2760 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2761 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2762 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2767 u32 bi, auth_data_len = 0, msg_len = 0;
2768 vlib_main_t *vm = lcm->vlib_main;
2770 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2772 clib_warning ("Can't allocate buffer for Map-Register!");
2776 b = vlib_get_buffer (vm, bi);
2778 /* leave some space for the encap headers */
2779 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2781 auth_data_len = auth_data_len_by_key_id (key_id);
2782 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2783 auth_data_len, nonce_res,
2786 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2789 /* push outer ip header */
2790 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2799 get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
2802 while (lcm->do_map_ ## name ## _election \
2803 | (0 == ip_fib_get_first_egress_ip_for_dst \
2804 (lcm, &lcm->active_map_ ##name, ip))) \
2806 if (0 == elect_map_ ## name (lcm)) \
2807 /* all map resolvers/servers are down */ \
2809 /* restart MR/MS checking by marking all of them up */ \
2810 vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
2819 /* CP output statistics */
2820 #define foreach_lisp_cp_output_error \
2821 _(MAP_REGISTERS_SENT, "map-registers sent") \
2822 _(MAP_REQUESTS_SENT, "map-requests sent") \
2823 _(RLOC_PROBES_SENT, "rloc-probes sent")
2824 static char *lisp_cp_output_error_strings[] = {
2825 #define _(sym,string) string,
2826 foreach_lisp_cp_output_error
2832 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2833 foreach_lisp_cp_output_error
2835 LISP_CP_OUTPUT_N_ERROR,
2836 } lisp_cp_output_error_t;
2839 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2840 vlib_frame_t * from_frame)
2845 /* dummy node used only for statistics */
2847 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2848 .function = lisp_cp_output,
2849 .name = "lisp-cp-output",
2850 .vector_size = sizeof (u32),
2851 .format_trace = format_lisp_cp_input_trace,
2852 .type = VLIB_NODE_TYPE_INTERNAL,
2854 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2855 .error_strings = lisp_cp_output_error_strings,
2857 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2860 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2866 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2867 u32 local_locator_set_index, ip_address_t * sloc,
2868 ip_address_t * rloc)
2875 u32 next_index, *to_next;
2876 gid_address_t *itr_rlocs;
2878 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2879 itr_rlocs = build_itr_rloc_list (lcm, ls);
2881 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2882 vec_free (itr_rlocs);
2886 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2888 next_index = (ip_addr_version (rloc) == IP4) ?
2889 ip4_lookup_node.index : ip6_lookup_node.index;
2891 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2893 /* Enqueue the packet */
2894 to_next = vlib_frame_vector_args (f);
2897 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2903 send_rloc_probes (lisp_cp_main_t * lcm)
2909 u32 si, rloc_probes_sent = 0;
2912 pool_foreach (e, lcm->fwd_entry_pool,
2914 if (vec_len (e->locator_pairs) == 0)
2917 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2920 clib_warning ("internal error: cannot find local eid %U in "
2921 "map-cache!", format_gid_address, &e->leid);
2924 lm = pool_elt_at_index (lcm->mapping_pool, si);
2926 /* get the best (lowest) priority */
2927 lprio = e->locator_pairs[0].priority;
2929 /* send rloc-probe for pair(s) with the best remote locator priority */
2930 vec_foreach (lp, e->locator_pairs)
2932 if (lp->priority != lprio)
2935 /* get first remote locator */
2936 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2943 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2944 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2950 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2952 pending_map_register_t *pmr;
2953 u32 bi, map_registers_sent = 0;
2958 u32 next_index, *to_next;
2959 mapping_t *records, *r, *group, *k;
2961 if (get_egress_map_server_ip (lcm, &sloc) < 0)
2964 records = build_map_register_record_list (lcm);
2968 vec_foreach (r, records)
2971 u8 key_id = r->key_id;
2974 continue; /* no secret key -> map-register cannot be sent */
2977 vec_add1 (group, r[0]);
2979 /* group mappings that share common key */
2980 for (k = r + 1; k < vec_end (records); k++)
2982 if (k->key_id != r->key_id)
2985 if (vec_is_equal (k->key, r->key))
2987 vec_add1 (group, k[0]);
2988 k->key = 0; /* don't process this mapping again */
2992 b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
2993 want_map_notif, group, key_id, key, &bi);
2998 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3000 next_index = (ip_addr_version (&lcm->active_map_server) == IP4) ?
3001 ip4_lookup_node.index : ip6_lookup_node.index;
3003 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3005 /* Enqueue the packet */
3006 to_next = vlib_frame_vector_args (f);
3009 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3010 map_registers_sent++;
3012 pool_get (lcm->pending_map_registers_pool, pmr);
3013 memset (pmr, 0, sizeof (*pmr));
3014 pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
3015 hash_set (lcm->map_register_messages_by_nonce, nonce,
3016 pmr - lcm->pending_map_registers_pool);
3018 free_map_register_records (records);
3020 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3021 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
3022 map_registers_sent);
3027 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
3028 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
3030 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
3031 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
3034 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
3035 gid_address_t * seid, gid_address_t * deid,
3036 u8 is_smr_invoked, u8 is_resend)
3038 u32 next_index, bi = 0, *to_next, map_index;
3042 locator_set_t *loc_set;
3044 pending_map_request_t *pmr, *duplicate_pmr = 0;
3048 /* if there is already a pending request remember it */
3051 pool_foreach(pmr, lcm->pending_map_requests_pool,
3053 if (!gid_address_cmp (&pmr->src, seid)
3054 && !gid_address_cmp (&pmr->dst, deid))
3056 duplicate_pmr = pmr;
3062 if (!is_resend && duplicate_pmr)
3064 /* don't send the request if there is a pending map request already */
3068 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
3070 /* get locator-set for seid */
3071 if (!pitr_mode && gid_address_type (deid) != GID_ADDR_NSH)
3073 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
3074 if (map_index == ~0)
3076 clib_warning ("No local mapping found in eid-table for %U!",
3077 format_gid_address, seid);
3081 map = pool_elt_at_index (lcm->mapping_pool, map_index);
3086 ("Mapping found for src eid %U is not marked as local!",
3087 format_gid_address, seid);
3090 ls_index = map->locator_set_index;
3096 if (lcm->pitr_map_index != ~0)
3099 pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
3100 ls_index = map->locator_set_index;
3109 if (lcm->nsh_map_index == (u32) ~ 0)
3111 clib_warning ("No locator-set defined for NSH!");
3116 map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
3117 ls_index = map->locator_set_index;
3122 /* overwrite locator set if map-request itr-rlocs configured */
3123 if (~0 != lcm->mreq_itr_rlocs)
3125 ls_index = lcm->mreq_itr_rlocs;
3128 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
3130 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
3133 duplicate_pmr->to_be_removed = 1;
3137 /* build the encapsulated map request */
3138 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
3139 &lcm->active_map_resolver,
3140 &sloc, is_smr_invoked, &nonce, &bi);
3145 /* set fib index to default and lookup node */
3146 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3147 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3148 ip4_lookup_node.index : ip6_lookup_node.index;
3150 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3152 /* Enqueue the packet */
3153 to_next = vlib_frame_vector_args (f);
3156 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3158 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3159 LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1);
3162 /* if there is a pending request already update it */
3164 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
3166 /* remove the oldest nonce */
3167 u64 CLIB_UNUSED (tmp), *nonce_del;
3168 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
3169 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
3170 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
3173 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
3174 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3175 duplicate_pmr - lcm->pending_map_requests_pool);
3179 /* add map-request to pending requests table */
3180 pool_get (lcm->pending_map_requests_pool, pmr);
3181 memset (pmr, 0, sizeof (*pmr));
3182 gid_address_copy (&pmr->src, seid);
3183 gid_address_copy (&pmr->dst, deid);
3184 clib_fifo_add1 (pmr->nonces, nonce);
3185 pmr->is_smr_invoked = is_smr_invoked;
3186 reset_pending_mr_counters (pmr);
3187 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3188 pmr - lcm->pending_map_requests_pool);
3195 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
3197 ip4_header_t *ip4 = hdr;
3200 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
3202 ip_address_set (src, &ip4->src_address, IP4);
3203 ip_address_set (dst, &ip4->dst_address, IP4);
3208 ip_address_set (src, &ip6->src_address, IP6);
3209 ip_address_set (dst, &ip6->dst_address, IP6);
3214 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3218 u32 vni = ~0, table_id = ~0;
3220 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
3221 IP4 ? FIB_PROTOCOL_IP4 :
3227 vnip = hash_get (lcm->vni_by_table_id, table_id);
3231 clib_warning ("vrf %d is not mapped to any vni!", table_id);
3237 lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
3241 l2input_main_t *l2im = &l2input_main;
3242 l2_input_config_t *config;
3243 l2_bridge_domain_t *bd_config;
3245 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
3246 config = vec_elt_at_index (l2im->configs, sw_if_index0);
3247 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
3249 return bd_config->bd_id;
3253 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
3257 u32 bd = lisp_get_bd_from_buffer_eth (b);
3259 vnip = hash_get (lcm->vni_by_bd_id, bd);
3263 clib_warning ("bridge domain %d is not mapped to any vni!", bd);
3269 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3270 gid_address_t * src, gid_address_t * dst,
3273 ethernet_header_t *eh;
3275 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3277 memset (src, 0, sizeof (*src));
3278 memset (dst, 0, sizeof (*dst));
3280 gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
3281 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3283 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
3286 u8 version, preflen;
3288 gid_address_type (src) = GID_ADDR_IP_PREFIX;
3289 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
3291 ip = vlib_buffer_get_current (b);
3292 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
3294 version = gid_address_ip_version (src);
3295 preflen = ip_address_max_len (version);
3296 gid_address_ippref_len (src) = preflen;
3297 gid_address_ippref_len (dst) = preflen;
3299 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
3300 gid_address_vni (dst) = vni;
3301 gid_address_vni (src) = vni;
3303 else if (LISP_AFI_MAC == type)
3305 ethernet_arp_header_t *ah;
3307 eh = vlib_buffer_get_current (b);
3309 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
3311 ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
3312 gid_address_type (dst) = GID_ADDR_ARP;
3314 if (clib_net_to_host_u16 (ah->opcode)
3315 != ETHERNET_ARP_OPCODE_request)
3317 memset (&gid_address_arp_ndp_ip (dst), 0,
3318 sizeof (ip_address_t));
3319 ip_addr_version (&gid_address_arp_ndp_ip (dst)) = IP4;
3320 gid_address_arp_ndp_bd (dst) = ~0;
3324 gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
3325 clib_memcpy (&gid_address_arp_ip4 (dst),
3326 &ah->ip4_over_ethernet[1].ip4, 4);
3330 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
3333 ip = (ip6_header_t *) (eh + 1);
3335 if (IP_PROTOCOL_ICMP6 == ip->protocol)
3337 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3338 ndh = ip6_next_header (ip);
3339 if (ndh->icmp.type == ICMP6_neighbor_solicitation)
3341 gid_address_type (dst) = GID_ADDR_NDP;
3343 /* check that source link layer address option is present */
3344 opt = (void *) (ndh + 1);
3345 if ((opt->header.type !=
3346 ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
3347 || (opt->header.n_data_u64s != 1))
3349 memset (&gid_address_arp_ndp_ip (dst), 0,
3350 sizeof (ip_address_t));
3351 ip_addr_version (&gid_address_arp_ndp_ip (dst)) =
3353 gid_address_arp_ndp_bd (dst) = ~0;
3354 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3358 gid_address_ndp_bd (dst) =
3359 lisp_get_bd_from_buffer_eth (b);
3360 ip_address_set (&gid_address_arp_ndp_ip (dst),
3361 &ndh->target_address, IP6);
3367 gid_address_type (src) = GID_ADDR_MAC;
3368 gid_address_type (dst) = GID_ADDR_MAC;
3369 mac_copy (&gid_address_mac (src), eh->src_address);
3370 mac_copy (&gid_address_mac (dst), eh->dst_address);
3373 vni = lisp_get_vni_from_buffer_eth (lcm, b);
3375 gid_address_vni (dst) = vni;
3376 gid_address_vni (src) = vni;
3379 else if (LISP_AFI_LCAF == type)
3382 eh = vlib_buffer_get_current (b);
3384 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
3386 nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
3387 u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
3388 u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
3389 gid_address_nsh_spi (dst) = spi;
3390 gid_address_nsh_si (dst) = si;
3392 gid_address_type (dst) = GID_ADDR_NSH;
3393 gid_address_type (src) = GID_ADDR_NSH;
3399 lisp_cp_lookup_inline (vlib_main_t * vm,
3400 vlib_node_runtime_t * node,
3401 vlib_frame_t * from_frame, int overlay)
3403 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3404 u32 *from, *to_next, di, si;
3405 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3407 uword n_left_from, n_left_to_next;
3408 vnet_main_t *vnm = vnet_get_main ();
3410 from = vlib_frame_vector_args (from_frame);
3411 n_left_from = from_frame->n_vectors;
3412 next_index = node->cached_next_index;
3414 while (n_left_from > 0)
3416 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
3418 while (n_left_from > 0 && n_left_to_next > 0)
3420 u32 pi0, sw_if_index0, next0;
3423 gid_address_t src, dst;
3424 ethernet_arp_header_t *arp0;
3425 ethernet_header_t *eth0;
3426 vnet_hw_interface_t *hw_if0;
3427 ethernet_header_t *eh0;
3428 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3436 n_left_to_next -= 1;
3438 b0 = vlib_get_buffer (vm, pi0);
3440 /* src/dst eid pair */
3441 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
3443 if (gid_address_type (&dst) == GID_ADDR_ARP)
3445 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3446 if (GID_LOOKUP_MISS_L2 == mac0)
3449 /* send ARP reply */
3450 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3451 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3453 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3455 eth0 = vlib_buffer_get_current (b0);
3456 arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
3458 arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
3459 arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
3460 clib_memcpy (arp0->ip4_over_ethernet[0].ethernet,
3462 clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
3463 &gid_address_arp_ip4 (&dst), 4);
3465 /* Hardware must be ethernet-like. */
3466 ASSERT (vec_len (hw_if0->hw_address) == 6);
3468 clib_memcpy (eth0->dst_address, eth0->src_address, 6);
3469 clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
3471 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
3472 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3475 else if (gid_address_type (&dst) == GID_ADDR_NDP)
3477 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3478 if (GID_LOOKUP_MISS_L2 == mac0)
3481 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3482 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3484 eh0 = vlib_buffer_get_current (b0);
3485 ip0 = (ip6_header_t *) (eh0 + 1);
3486 ndh = ip6_next_header (ip0);
3488 ip0->dst_address = ip0->src_address;
3489 ip0->src_address = ndh->target_address;
3490 ip0->hop_limit = 255;
3491 opt = (void *) (ndh + 1);
3493 ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
3494 clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
3495 ndh->icmp.type = ICMP6_neighbor_advertisement;
3496 ndh->advertisement_flags = clib_host_to_net_u32
3497 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
3498 ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
3499 ndh->icmp.checksum = 0;
3500 ndh->icmp.checksum =
3501 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
3503 clib_memcpy (eh0->dst_address, eh0->src_address, 6);
3504 clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
3507 [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
3508 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3512 /* if we have remote mapping for destination already in map-chache
3513 add forwarding tunnel directly. If not send a map-request */
3514 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
3518 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
3519 /* send a map-request also in case of negative mapping entry
3520 with corresponding action */
3521 if (m->action == LISP_SEND_MAP_REQUEST)
3523 /* send map-request */
3524 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3525 0 /* is_resend */ );
3529 if (GID_ADDR_NSH != gid_address_type (&dst))
3531 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
3535 si = lcm->nsh_map_index;
3539 dp_add_fwd_entry_from_mt (si, di);
3545 /* send map-request */
3546 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3547 0 /* is_resend */ );
3551 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
3552 next0 = LISP_CP_LOOKUP_NEXT_DROP;
3554 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3556 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
3559 memset (tr, 0, sizeof (*tr));
3560 gid_address_copy (&tr->dst_eid, &dst);
3561 ip_address_copy (&tr->map_resolver_ip,
3562 &lcm->active_map_resolver);
3564 gid_address_free (&dst);
3565 gid_address_free (&src);
3566 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3568 n_left_to_next, pi0, next0);
3571 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
3573 return from_frame->n_vectors;
3577 lisp_cp_lookup_ip4 (vlib_main_t * vm,
3578 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3580 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
3584 lisp_cp_lookup_ip6 (vlib_main_t * vm,
3585 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3587 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
3591 lisp_cp_lookup_l2 (vlib_main_t * vm,
3592 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3594 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
3598 lisp_cp_lookup_nsh (vlib_main_t * vm,
3599 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3601 /* TODO decide if NSH should be propagated as LCAF or not */
3602 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
3606 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
3607 .function = lisp_cp_lookup_ip4,
3608 .name = "lisp-cp-lookup-ip4",
3609 .vector_size = sizeof (u32),
3610 .format_trace = format_lisp_cp_lookup_trace,
3611 .type = VLIB_NODE_TYPE_INTERNAL,
3613 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3614 .error_strings = lisp_cp_lookup_error_strings,
3616 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3619 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3620 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3626 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
3627 .function = lisp_cp_lookup_ip6,
3628 .name = "lisp-cp-lookup-ip6",
3629 .vector_size = sizeof (u32),
3630 .format_trace = format_lisp_cp_lookup_trace,
3631 .type = VLIB_NODE_TYPE_INTERNAL,
3633 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3634 .error_strings = lisp_cp_lookup_error_strings,
3636 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3639 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3640 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3646 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
3647 .function = lisp_cp_lookup_l2,
3648 .name = "lisp-cp-lookup-l2",
3649 .vector_size = sizeof (u32),
3650 .format_trace = format_lisp_cp_lookup_trace,
3651 .type = VLIB_NODE_TYPE_INTERNAL,
3653 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3654 .error_strings = lisp_cp_lookup_error_strings,
3656 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3659 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3660 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3666 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
3667 .function = lisp_cp_lookup_nsh,
3668 .name = "lisp-cp-lookup-nsh",
3669 .vector_size = sizeof (u32),
3670 .format_trace = format_lisp_cp_lookup_trace,
3671 .type = VLIB_NODE_TYPE_INTERNAL,
3673 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3674 .error_strings = lisp_cp_lookup_error_strings,
3676 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3679 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3680 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3685 /* lisp_cp_input statistics */
3686 #define foreach_lisp_cp_input_error \
3688 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
3689 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
3690 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
3691 _(MAP_REPLIES_RECEIVED, "map-replies received")
3693 static char *lisp_cp_input_error_strings[] = {
3694 #define _(sym,string) string,
3695 foreach_lisp_cp_input_error
3701 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
3702 foreach_lisp_cp_input_error
3704 LISP_CP_INPUT_N_ERROR,
3705 } lisp_cp_input_error_t;
3709 gid_address_t dst_eid;
3710 ip4_address_t map_resolver_ip;
3711 } lisp_cp_input_trace_t;
3714 format_lisp_cp_input_trace (u8 * s, va_list * args)
3716 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
3717 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
3718 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
3719 va_arg (*args, lisp_cp_input_trace_t *);
3721 s = format (s, "LISP-CP-INPUT: TODO");
3726 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3729 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3730 memset (adj_args, 0, sizeof (adj_args[0]));
3732 m = pool_elt_at_index (lcm->mapping_pool, mi);
3734 gid_address_copy (&adj_args->reid, &m->eid);
3735 adj_args->is_add = 0;
3736 if (vnet_lisp_add_del_adjacency (adj_args))
3737 clib_warning ("failed to del adjacency!");
3739 vnet_lisp_del_mapping (&m->eid, NULL);
3740 mapping_delete_timer (lcm, mi);
3744 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
3745 f64 expiration_time)
3748 u64 now = clib_cpu_time_now ();
3749 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
3750 u64 exp_clock_time = now + expiration_time * cpu_cps;
3752 m = pool_elt_at_index (lcm->mapping_pool, mi);
3755 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
3759 process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3762 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
3763 mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
3769 if (m->delete_after_expiration)
3771 remove_expired_mapping (lcm, mi);
3775 fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
3779 fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
3781 memset (a, 0, sizeof (*a));
3782 a->rmt_eid = fe->reid;
3784 a->lcl_eid = fe->leid;
3785 a->vni = gid_address_vni (&fe->reid);
3787 rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
3791 if (m->almost_expired)
3793 m->almost_expired = 0; /* reset flag */
3796 if (m->packets != c.packets)
3798 /* mapping is in use, re-fetch */
3799 map_request_args_t mr_args;
3800 memset (&mr_args, 0, sizeof (mr_args));
3801 mr_args.seid = fe->leid;
3802 mr_args.deid = fe->reid;
3804 send_map_request_thread_fn (&mr_args);
3807 remove_expired_mapping (lcm, mi);
3810 remove_expired_mapping (lcm, mi);
3814 m->almost_expired = 1;
3815 mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
3819 m->packets = c.packets;
3821 m->delete_after_expiration = 1;
3826 map_records_arg_free (map_records_arg_t * a)
3828 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3830 vec_foreach (m, a->mappings)
3832 vec_free (m->locators);
3833 gid_address_free (&m->eid);
3835 pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
3839 process_map_reply (map_records_arg_t * a)
3842 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3843 u32 dst_map_index = 0;
3844 pending_map_request_t *pmr;
3849 if (a->is_rloc_probe)
3852 /* Check pending requests table and nonce */
3853 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3856 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3859 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3861 vec_foreach (m, a->mappings)
3863 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
3864 memset (m_args, 0, sizeof (m_args[0]));
3865 gid_address_copy (&m_args->eid, &m->eid);
3866 m_args->action = m->action;
3867 m_args->authoritative = m->authoritative;
3868 m_args->ttl = m->ttl;
3869 m_args->is_static = 0;
3871 /* insert/update mappings cache */
3872 vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
3874 if (dst_map_index == (u32) ~ 0)
3879 /* try to program forwarding only if mapping saved or updated */
3880 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3881 memset (adj_args, 0, sizeof (adj_args[0]));
3883 gid_address_copy (&adj_args->leid, &pmr->src);
3884 gid_address_copy (&adj_args->reid, &m->eid);
3885 adj_args->is_add = 1;
3887 if (vnet_lisp_add_del_adjacency (adj_args))
3888 clib_warning ("failed to add adjacency!");
3891 if ((u32) ~ 0 != m->ttl)
3892 mapping_start_expiration_timer (lcm, dst_map_index,
3893 (m->ttl == 0) ? 0 : MAPPING_TIMEOUT);
3896 /* remove pending map request entry */
3899 clib_fifo_foreach (noncep, pmr->nonces, ({
3900 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3904 clib_fifo_free (pmr->nonces);
3905 pool_put (lcm->pending_map_requests_pool, pmr);
3913 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3914 lisp_key_type_t key_id, u8 * key)
3920 auth_data_len = auth_data_len_by_key_id (key_id);
3921 if ((u16) ~ 0 == auth_data_len)
3923 clib_warning ("invalid length for key_id %d!", key_id);
3927 /* save auth data */
3928 vec_validate (auth_data, auth_data_len - 1);
3929 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3931 /* clear auth data */
3932 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3934 /* get hash of the message */
3935 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3936 (unsigned char *) h, msg_len, NULL, NULL);
3938 result = memcmp (code, auth_data, auth_data_len);
3940 vec_free (auth_data);
3946 process_map_notify (map_records_arg_t * a)
3948 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3951 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3954 clib_warning ("No pending map-register entry with nonce %lu!",
3960 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
3961 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3963 /* reset map-notify counter */
3964 lcm->expired_map_registers = 0;
3968 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3972 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3975 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3979 return pool_elt_at_index (lcm->mapping_pool, mi);
3983 * When map-notify is received it is necessary that all EIDs in the record
3984 * list share common key. The key is then used to verify authentication
3985 * data in map-notify message.
3988 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3989 u32 key_id, u8 ** key_out)
3991 u32 i, len = vec_len (maps);
3994 /* get key of the first mapping */
3995 m = get_mapping (lcm, &maps[0].eid);
3999 key_out[0] = m->key;
4001 for (i = 1; i < len; i++)
4003 m = get_mapping (lcm, &maps[i].eid);
4007 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
4009 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
4017 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
4019 locator_t *locators = 0;
4025 memset (&m, 0, sizeof (m));
4027 /* parse record eid */
4028 for (i = 0; i < count; i++)
4031 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
4034 clib_warning ("Failed to parse mapping record!");
4035 vec_foreach (loc, locators) locator_free (loc);
4036 vec_free (locators);
4040 m.locators = locators;
4041 gid_address_copy (&m.eid, &deid);
4042 vec_add1 (a->mappings, m);
4048 static map_records_arg_t *
4049 map_record_args_get ()
4051 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4052 map_records_arg_t *rec;
4056 pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
4058 map_records_arg_free (rec);
4062 pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
4066 static map_records_arg_t *
4067 parse_map_notify (vlib_buffer_t * b)
4070 map_notify_hdr_t *mnotif_hdr;
4071 lisp_key_type_t key_id;
4072 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4075 u16 auth_data_len = 0;
4077 map_records_arg_t *a;
4079 a = map_record_args_get ();
4080 memset (a, 0, sizeof (*a));
4081 mnotif_hdr = vlib_buffer_get_current (b);
4082 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
4083 memset (&deid, 0, sizeof (deid));
4085 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
4086 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
4087 auth_data_len = auth_data_len_by_key_id (key_id);
4089 /* advance buffer by authentication data */
4090 vlib_buffer_pull (b, auth_data_len);
4092 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
4093 rc = parse_map_records (b, a, record_count);
4096 map_records_arg_free (a);
4100 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
4103 map_records_arg_free (a);
4107 /* verify authentication data */
4108 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
4109 - (u8 *) mnotif_hdr, key_id, key))
4111 clib_warning ("Map-notify auth data verification failed for nonce "
4112 "0x%lx!", a->nonce);
4113 map_records_arg_free (a);
4119 static vlib_buffer_t *
4120 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
4121 ip_address_t * dst, u64 nonce, u8 probe_bit,
4122 mapping_t * records, u16 dst_port, u32 * bi_res)
4126 vlib_main_t *vm = lcm->vlib_main;
4128 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
4130 clib_warning ("Can't allocate buffer for Map-Register!");
4134 b = vlib_get_buffer (vm, bi);
4136 /* leave some space for the encap headers */
4137 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
4139 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
4141 /* push outer ip header */
4142 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
4149 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
4150 u8 probe_bit, u64 nonce, u16 dst_port,
4151 ip_address_t * probed_loc)
4157 u32 next_index, *to_next;
4158 mapping_t *records = 0, *m;
4160 m = pool_elt_at_index (lcm->mapping_pool, mi);
4164 vec_add1 (records, m[0]);
4165 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
4166 memset (&src, 0, sizeof (src));
4168 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
4170 clib_warning ("can't find inteface address for %U", format_ip_address,
4175 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
4179 free_map_register_records (records);
4181 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
4182 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
4183 ip4_lookup_node.index : ip6_lookup_node.index;
4185 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
4187 /* Enqueue the packet */
4188 to_next = vlib_frame_vector_args (f);
4191 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
4196 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
4198 const i32 start = vnet_buffer (b)->l3_hdr_offset;
4199 if (start < 0 && start < -sizeof (b->pre_data))
4205 *ip_hdr = b->data + start;
4206 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
4211 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
4212 lisp_cp_main_t * lcm, vlib_buffer_t * b)
4215 ip_address_t *dst_loc = 0, probed_loc, src_loc;
4217 map_request_hdr_t *mreq_hdr;
4218 gid_address_t src, dst;
4220 u32 i, len = 0, rloc_probe_recv = 0;
4221 gid_address_t *itr_rlocs = 0;
4223 mreq_hdr = vlib_buffer_get_current (b);
4224 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
4227 ("Only SMR Map-Requests and RLOC probe supported for now!");
4231 vlib_buffer_pull (b, sizeof (*mreq_hdr));
4232 nonce = MREQ_NONCE (mreq_hdr);
4235 len = lisp_msg_parse_addr (b, &src);
4239 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
4240 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
4244 /* parse eid records and send SMR-invoked map-requests */
4245 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
4247 memset (&dst, 0, sizeof (dst));
4248 len = lisp_msg_parse_eid_rec (b, &dst);
4251 clib_warning ("Can't parse map-request EID-record");
4255 if (MREQ_SMR (mreq_hdr))
4257 /* send SMR-invoked map-requests */
4258 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
4260 else if (MREQ_RLOC_PROBE (mreq_hdr))
4262 find_ip_header (b, &ip_hdr);
4265 clib_warning ("Cannot find the IP header!");
4269 memset (&m, 0, sizeof (m));
4270 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
4272 // TODO: select best locator; for now use the first one
4273 dst_loc = &gid_address_ip (&itr_rlocs[0]);
4275 /* get src/dst IP addresses */
4276 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
4278 // TODO get source port from buffer
4279 u16 src_port = LISP_CONTROL_PORT;
4281 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
4282 src_port, &probed_loc);
4287 vlib_node_increment_counter (vm, node->node_index,
4288 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
4290 vec_free (itr_rlocs);
4294 parse_map_reply (vlib_buffer_t * b)
4301 map_reply_hdr_t *mrep_hdr;
4302 map_records_arg_t *a;
4304 a = map_record_args_get ();
4305 memset (a, 0, sizeof (*a));
4307 locator_t *locators;
4309 mrep_hdr = vlib_buffer_get_current (b);
4310 a->nonce = MREP_NONCE (mrep_hdr);
4311 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
4312 if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
4317 vlib_buffer_pull (b, sizeof (*mrep_hdr));
4319 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
4321 memset (&m, 0, sizeof (m));
4323 h = vlib_buffer_get_current (b);
4325 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
4326 m.action = MAP_REC_ACTION (h);
4327 m.authoritative = MAP_REC_AUTH (h);
4329 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
4332 clib_warning ("Failed to parse mapping record!");
4333 map_records_arg_free (a);
4337 m.locators = locators;
4338 gid_address_copy (&m.eid, &deid);
4339 vec_add1 (a->mappings, m);
4345 queue_map_reply_for_processing (map_records_arg_t * a)
4347 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
4351 queue_map_notify_for_processing (map_records_arg_t * a)
4353 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
4357 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
4358 vlib_frame_t * from_frame)
4360 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
4361 map_notifies_recv = 0;
4362 lisp_msg_type_e type;
4363 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4364 map_records_arg_t *a;
4366 from = vlib_frame_vector_args (from_frame);
4367 n_left_from = from_frame->n_vectors;
4370 while (n_left_from > 0)
4372 u32 n_left_to_next_drop;
4374 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4375 to_next_drop, n_left_to_next_drop);
4376 while (n_left_from > 0 && n_left_to_next_drop > 0)
4384 to_next_drop[0] = bi0;
4386 n_left_to_next_drop -= 1;
4388 b0 = vlib_get_buffer (vm, bi0);
4390 type = lisp_msg_type (vlib_buffer_get_current (b0));
4393 case LISP_MAP_REPLY:
4394 a = parse_map_reply (b0);
4397 if (a->is_rloc_probe)
4398 rloc_probe_rep_recv++;
4399 queue_map_reply_for_processing (a);
4402 case LISP_MAP_REQUEST:
4403 process_map_request (vm, node, lcm, b0);
4405 case LISP_MAP_NOTIFY:
4406 a = parse_map_notify (b0);
4409 map_notifies_recv++;
4410 queue_map_notify_for_processing (a);
4414 clib_warning ("Unsupported LISP message type %d", type);
4418 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
4420 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
4426 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4427 n_left_to_next_drop);
4429 vlib_node_increment_counter (vm, node->node_index,
4430 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
4431 rloc_probe_rep_recv);
4432 vlib_node_increment_counter (vm, node->node_index,
4433 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
4435 return from_frame->n_vectors;
4439 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
4440 .function = lisp_cp_input,
4441 .name = "lisp-cp-input",
4442 .vector_size = sizeof (u32),
4443 .format_trace = format_lisp_cp_input_trace,
4444 .type = VLIB_NODE_TYPE_INTERNAL,
4446 .n_errors = LISP_CP_INPUT_N_ERROR,
4447 .error_strings = lisp_cp_input_error_strings,
4449 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
4452 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
4458 lisp_cp_init (vlib_main_t * vm)
4460 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4461 clib_error_t *error = 0;
4462 vlib_thread_main_t *vtm = vlib_get_thread_main ();
4465 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
4468 lcm->im4 = &ip4_main;
4469 lcm->im6 = &ip6_main;
4470 lcm->vlib_main = vm;
4471 lcm->vnet_main = vnet_get_main ();
4472 lcm->mreq_itr_rlocs = ~0;
4474 lcm->pitr_map_index = ~0;
4475 lcm->petr_map_index = ~0;
4476 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
4477 memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
4479 gid_dictionary_init (&lcm->mapping_index_by_gid);
4480 lcm->do_map_resolver_election = 1;
4481 lcm->do_map_server_election = 1;
4482 lcm->map_request_mode = MR_MODE_DST_ONLY;
4484 num_threads = 1 /* main thread */ + vtm->n_threads;
4485 vec_validate (lcm->map_records_args_pool, num_threads - 1);
4487 /* default vrf mapped to vni 0 */
4488 hash_set (lcm->table_id_by_vni, 0, 0);
4489 hash_set (lcm->vni_by_table_id, 0, 0);
4491 lisp_cp_register_dst_port (vm);
4493 u64 now = clib_cpu_time_now ();
4494 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
4495 lcm->nsh_map_index = ~0;
4496 lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
4497 lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
4498 lcm->expired_map_registers = 0;
4499 lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
4500 lcm->flags |= LISP_FLAG_XTR_MODE;
4505 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
4506 lisp_api_stats_t * stat, lisp_stats_key_t * key,
4510 vlib_combined_counter_main_t *cm = &lgm->counters;
4511 lisp_gpe_fwd_entry_key_t fwd_key;
4512 const lisp_gpe_tunnel_t *lgt;
4515 memset (stat, 0, sizeof (*stat));
4516 memset (&fwd_key, 0, sizeof (fwd_key));
4518 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
4521 gid_to_dp_address (&fe->reid, &stat->deid);
4522 gid_to_dp_address (&fe->leid, &stat->seid);
4523 stat->vni = gid_address_vni (&fe->reid);
4525 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
4526 stat->loc_rloc = lgt->key->lcl;
4527 stat->rmt_rloc = lgt->key->rmt;
4529 vlib_get_combined_counter (cm, stats_index, &v);
4535 vnet_lisp_get_stats (void)
4537 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
4538 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4539 lisp_api_stats_t *stats = 0, stat;
4540 lisp_stats_key_t *key;
4544 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
4546 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
4547 vec_add1 (stats, stat);
4555 send_map_request_thread_fn (void *arg)
4557 map_request_args_t *a = arg;
4558 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4561 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4563 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4569 queue_map_request (gid_address_t * seid, gid_address_t * deid,
4570 u8 smr_invoked, u8 is_resend)
4572 map_request_args_t a;
4574 a.is_resend = is_resend;
4575 gid_address_copy (&a.seid, seid);
4576 gid_address_copy (&a.deid, deid);
4577 a.smr_invoked = smr_invoked;
4579 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
4580 (u8 *) & a, sizeof (a));
4585 * Take an action with a pending map request depending on expiration time
4586 * and re-try counters.
4589 update_pending_request (pending_map_request_t * r, f64 dt)
4591 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4594 if (r->time_to_expire - dt < 0)
4595 /* it's time to decide what to do with this pending request */
4597 if (r->retries_num >= NUMBER_OF_RETRIES)
4598 /* too many retries -> assume current map resolver is not available */
4600 mr = get_map_resolver (&lcm->active_map_resolver);
4603 clib_warning ("Map resolver %U not found - probably deleted "
4604 "by the user recently.", format_ip_address,
4605 &lcm->active_map_resolver);
4609 clib_warning ("map resolver %U is unreachable, ignoring",
4610 format_ip_address, &lcm->active_map_resolver);
4612 /* mark current map resolver unavailable so it won't be
4613 * selected next time */
4615 mr->last_update = vlib_time_now (lcm->vlib_main);
4618 reset_pending_mr_counters (r);
4619 elect_map_resolver (lcm);
4621 /* try to find a next eligible map resolver and re-send */
4622 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4628 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4631 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
4635 r->time_to_expire -= dt;
4639 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
4642 pending_map_request_t *pmr;
4643 u32 *to_be_removed = 0, *pmr_index;
4646 pool_foreach (pmr, lcm->pending_map_requests_pool,
4648 if (pmr->to_be_removed)
4650 clib_fifo_foreach (nonce, pmr->nonces, ({
4651 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
4654 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
4659 vec_foreach (pmr_index, to_be_removed)
4660 pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
4662 vec_free (to_be_removed);
4666 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
4668 static f64 time_left = RLOC_PROBING_INTERVAL;
4670 if (!lcm->is_enabled || !lcm->rloc_probing)
4676 time_left = RLOC_PROBING_INTERVAL;
4677 send_rloc_probes (lcm);
4682 update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
4684 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4688 r->time_to_expire -= dt;
4690 if (r->time_to_expire < 0)
4692 lcm->expired_map_registers++;
4694 if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
4696 ms = get_map_server (&lcm->active_map_server);
4699 clib_warning ("Map server %U not found - probably deleted "
4700 "by the user recently.", format_ip_address,
4701 &lcm->active_map_server);
4705 clib_warning ("map server %U is unreachable, ignoring",
4706 format_ip_address, &lcm->active_map_server);
4708 /* mark current map server unavailable so it won't be
4709 * elected next time */
4711 ms->last_update = vlib_time_now (lcm->vlib_main);
4714 elect_map_server (lcm);
4716 /* indication for deleting all pending map registers */
4718 lcm->expired_map_registers = 0;
4723 /* delete pending map register */
4731 update_map_register (lisp_cp_main_t * lcm, f64 dt)
4733 u32 *to_be_removed = 0, *pmr_index;
4734 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
4735 static u64 mreg_sent_counter = 0;
4737 pending_map_register_t *pmr;
4740 if (!lcm->is_enabled || !lcm->map_registering)
4744 pool_foreach (pmr, lcm->pending_map_registers_pool,
4746 if (!update_pending_map_register (pmr, dt, &del_all))
4750 vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
4757 /* delete all pending map register messages so they won't
4758 * trigger another map server election.. */
4759 pool_free (lcm->pending_map_registers_pool);
4760 hash_free (lcm->map_register_messages_by_nonce);
4762 /* ..and trigger registration against next map server (if any) */
4767 vec_foreach (pmr_index, to_be_removed)
4768 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4771 vec_free (to_be_removed);
4776 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
4777 time_left = MAP_REGISTER_INTERVAL;
4780 mreg_sent_counter++;
4781 time_left = QUICK_MAP_REGISTER_INTERVAL;
4783 send_map_register (lcm, 1 /* want map notify */ );
4788 send_map_resolver_service (vlib_main_t * vm,
4789 vlib_node_runtime_t * rt, vlib_frame_t * f)
4793 pending_map_request_t *pmr;
4794 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4798 vlib_process_wait_for_event_or_clock (vm, period);
4800 /* currently no signals are expected - just wait for clock */
4801 (void) vlib_process_get_events (vm, 0);
4804 pool_foreach (pmr, lcm->pending_map_requests_pool,
4806 if (!pmr->to_be_removed)
4807 update_pending_request (pmr, period);
4811 remove_dead_pending_map_requests (lcm);
4813 update_map_register (lcm, period);
4814 update_rloc_probing (lcm, period);
4816 u64 now = clib_cpu_time_now ();
4818 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
4819 if (vec_len (expired) > 0)
4822 vec_foreach (mi, expired)
4824 process_expired_mapping (lcm, mi[0]);
4826 _vec_len (expired) = 0;
4835 vnet_lisp_stats_enable_disable (u8 enable)
4837 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4839 if (vnet_lisp_enable_disable_status () == 0)
4840 return VNET_API_ERROR_LISP_DISABLED;
4843 lcm->flags |= LISP_FLAG_STATS_ENABLED;
4845 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
4851 vnet_lisp_stats_enable_disable_state (void)
4853 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4855 if (vnet_lisp_enable_disable_status () == 0)
4856 return VNET_API_ERROR_LISP_DISABLED;
4858 return lcm->flags & LISP_FLAG_STATS_ENABLED;
4862 VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
4863 .function = send_map_resolver_service,
4864 .type = VLIB_NODE_TYPE_PROCESS,
4865 .name = "lisp-retry-service",
4866 .process_log2_n_stack_bytes = 16,
4871 vnet_lisp_set_transport_protocol (u8 protocol)
4873 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4875 if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
4876 protocol > LISP_TRANSPORT_PROTOCOL_API)
4877 return VNET_API_ERROR_INVALID_ARGUMENT;
4879 lcm->transport_protocol = protocol;
4883 lisp_transport_protocol_t
4884 vnet_lisp_get_transport_protocol (void)
4886 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4887 return lcm->transport_protocol;
4891 vnet_lisp_enable_disable_xtr_mode (u8 is_enabled)
4893 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4894 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
4895 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4896 u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
4898 if (pitr_mode && is_enabled)
4899 return VNET_API_ERROR_INVALID_ARGUMENT;
4901 if (is_enabled && xtr_mode)
4903 if (!is_enabled && !xtr_mode)
4910 lisp_cp_register_dst_port (lcm->vlib_main);
4912 lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
4913 lcm->flags |= LISP_FLAG_XTR_MODE;
4919 lisp_cp_unregister_dst_port (lcm->vlib_main);
4921 lisp_cp_disable_l2_l3_ifaces (lcm);
4922 lcm->flags &= ~LISP_FLAG_XTR_MODE;
4928 vnet_lisp_enable_disable_pitr_mode (u8 is_enabled)
4930 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4931 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4932 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
4934 if (xtr_mode && is_enabled)
4935 return VNET_API_ERROR_INVALID_VALUE;
4937 if (is_enabled && pitr_mode)
4939 if (!is_enabled && !pitr_mode)
4944 /* create iface, no default route */
4945 lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
4946 lcm->flags |= LISP_FLAG_PITR_MODE;
4950 lisp_cp_disable_l2_l3_ifaces (lcm);
4951 lcm->flags &= ~LISP_FLAG_PITR_MODE;
4957 vnet_lisp_enable_disable_petr_mode (u8 is_enabled)
4959 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4960 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4961 u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
4963 if (is_enabled && petr_mode)
4965 if (!is_enabled && !petr_mode)
4972 lisp_cp_register_dst_port (lcm->vlib_main);
4974 lcm->flags |= LISP_FLAG_PETR_MODE;
4980 lisp_cp_unregister_dst_port (lcm->vlib_main);
4982 lcm->flags &= ~LISP_FLAG_PETR_MODE;
4988 vnet_lisp_get_xtr_mode (void)
4990 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4991 return (lcm->flags & LISP_FLAG_XTR_MODE);
4995 vnet_lisp_get_pitr_mode (void)
4997 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4998 return (lcm->flags & LISP_FLAG_PITR_MODE);
5002 vnet_lisp_get_petr_mode (void)
5004 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5005 return (lcm->flags & LISP_FLAG_PETR_MODE);
5008 VLIB_INIT_FUNCTION (lisp_cp_init);
5011 * fd.io coding-style-patch-verification: ON
5014 * eval: (c-set-style "gnu")