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 <vnet/crypto/crypto.h>
31 #define MAX_VALUE_U24 0xffffff
33 /* mapping timer control constants (in seconds) */
34 #define TIME_UNTIL_REFETCH_OR_DELETE 20
35 #define MAPPING_TIMEOUT (((m->ttl) * 60) - TIME_UNTIL_REFETCH_OR_DELETE)
37 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 queue_map_request (gid_address_t * seid, gid_address_t * deid,
81 u8 smr_invoked, u8 is_resend);
83 ip_interface_address_t *
84 ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
85 u32 sw_if_index, u8 loop)
87 vnet_main_t *vnm = vnet_get_main ();
88 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
89 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
90 sw_if_index = swif->unnumbered_sw_if_index;
92 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
93 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
95 return pool_elt_at_index ((lm)->if_address_pool, ia);
99 ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
102 ip_interface_address_t *ia;
104 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
107 return ip_interface_address_get_address (lm, ia);
111 ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
112 u8 version, ip_address_t * result)
114 ip_lookup_main_t *lm;
117 lm = (version == AF_IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
118 addr = ip_interface_get_first_address (lm, sw_if_index, version);
122 ip_address_set (result, addr, version);
127 * Find the sw_if_index of the interface that would be used to egress towards
131 ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
133 fib_node_index_t fei;
136 ip_address_to_fib_prefix (dst, &prefix);
138 fei = fib_table_lookup (0, &prefix);
140 return (fib_entry_get_resolving_interface (fei));
144 * Find first IP of the interface that would be used to egress towards dst.
145 * Returns 1 if the address is found 0 otherwise.
148 ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
149 ip_address_t * result)
152 ip_lookup_main_t *lm;
156 ASSERT (result != 0);
158 ipver = ip_addr_version (dst);
160 lm = (ipver == AF_IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
161 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
166 /* find the first ip address */
167 addr = ip_interface_get_first_address (lm, si, ipver);
171 ip_address_set (result, addr, ipver);
176 dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add,
177 u8 with_default_route)
183 dp_table = hash_get (lcm->table_id_by_vni, vni);
187 clib_warning ("vni %d not associated to a vrf!", vni);
188 return VNET_API_ERROR_INVALID_VALUE;
193 dp_table = hash_get (lcm->bd_id_by_vni, vni);
196 clib_warning ("vni %d not associated to a bridge domain!", vni);
197 return VNET_API_ERROR_INVALID_VALUE;
201 /* enable/disable data-plane interface */
205 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
207 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0],
213 lisp_gpe_tenant_l2_iface_unlock (vni);
215 lisp_gpe_tenant_l3_iface_unlock (vni);
222 dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 dst_map_index)
224 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
227 clib_memset (a, 0, sizeof (*a));
229 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
233 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
235 /* delete dp fwd entry */
238 a->locator_pairs = fe->locator_pairs;
239 a->vni = gid_address_vni (&fe->reid);
240 gid_address_copy (&a->rmt_eid, &fe->reid);
242 gid_address_copy (&a->lcl_eid, &fe->leid);
244 vnet_lisp_gpe_del_fwd_counters (a, feip[0]);
245 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
247 /* delete entry in fwd table */
248 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
249 vec_free (fe->locator_pairs);
250 pool_put (lcm->fwd_entry_pool, fe);
254 * Finds first remote locator with best (lowest) priority that has a local
255 * peer locator with an underlying route to it.
259 get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
260 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
262 u32 i, limitp = 0, li, found = 0, esi;
263 locator_set_t *rmt_ls, *lcl_ls;
264 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
265 locator_t *lp, *rmt = 0;
270 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
272 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
274 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
281 /* find unvisited remote locator with best priority */
282 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
284 if (0 != hash_get (checked, i))
287 li = vec_elt (rmt_ls->locator_indices, i);
288 lp = pool_elt_at_index (lcm->locator_pool, li);
290 /* we don't support non-IP locators for now */
291 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
294 if ((found && lp->priority == limitp)
295 || (!found && lp->priority >= limitp))
299 /* don't search for locators with lower priority and don't
300 * check this locator again*/
301 limitp = lp->priority;
302 hash_set (checked, i, 1);
306 /* check if a local locator with a route to remote locator exists */
309 /* find egress sw_if_index for rmt locator */
311 ip_fib_get_egress_iface_for_dst (lcm,
312 &gid_address_ip (&rmt->address));
313 if ((u32) ~ 0 == esi)
316 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
318 li = vec_elt (lcl_ls->locator_indices, i);
319 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
321 /* found local locator with the needed sw_if_index */
322 if (sl->sw_if_index == esi)
324 /* and it has an address */
325 if (0 == ip_interface_get_first_ip_address (lcm,
327 gid_address_ip_version
332 clib_memset (&pair, 0, sizeof (pair));
333 ip_address_copy (&pair.rmt_loc,
334 &gid_address_ip (&rmt->address));
335 ip_address_copy (&pair.lcl_loc, lcl_addr);
336 pair.weight = rmt->weight;
337 pair.priority = rmt->priority;
338 vec_add1 (locator_pairs[0], pair);
352 gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
355 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
359 switch (fid_addr_type (fid))
361 case FID_ADDR_IP_PREF:
362 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
363 gid_address_ippref (dst) = fid_addr_ippref (fid);
366 gid_address_type (dst) = GID_ADDR_MAC;
367 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
370 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
376 vnet_lisp_map_register_state_get (void)
378 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
379 return lcm->map_registering;
383 vnet_lisp_rloc_probe_state_get (void)
385 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
386 return lcm->rloc_probing;
390 dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
392 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
393 gid_address_t *rmt_eid, *lcl_eid;
394 mapping_t *lcl_map, *rmt_map;
395 u32 sw_if_index, **rmts, rmts_idx;
396 uword *feip = 0, *dpid, *rmts_stored_idxp = 0;
398 u8 type, is_src_dst = 0;
401 clib_memset (a, 0, sizeof (*a));
403 /* remove entry if it already exists */
404 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
406 dp_del_fwd_entry (lcm, dst_map_index);
409 * Determine local mapping and eid
411 if (lcm->flags & LISP_FLAG_PITR_MODE)
413 if (lcm->pitr_map_index != ~0)
414 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
417 clib_warning ("no PITR mapping configured!");
422 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
423 lcl_eid = &lcl_map->eid;
426 * Determine remote mapping and eid
428 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
429 rmt_eid = &rmt_map->eid;
432 * Build and insert data plane forwarding entry
436 if (MR_MODE_SRC_DST == lcm->map_request_mode)
438 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
440 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
441 &gid_address_sd_dst (rmt_eid));
442 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
443 &gid_address_sd_src (rmt_eid));
447 gid_address_copy (&a->rmt_eid, rmt_eid);
448 gid_address_copy (&a->lcl_eid, lcl_eid);
453 gid_address_copy (&a->rmt_eid, rmt_eid);
455 a->vni = gid_address_vni (&a->rmt_eid);
456 a->is_src_dst = is_src_dst;
458 /* get vrf or bd_index associated to vni */
459 type = gid_address_type (&a->rmt_eid);
460 if (GID_ADDR_IP_PREFIX == type)
462 dpid = hash_get (lcm->table_id_by_vni, a->vni);
465 clib_warning ("vni %d not associated to a vrf!", a->vni);
468 a->table_id = dpid[0];
470 else if (GID_ADDR_MAC == type)
472 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
475 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
481 /* find best locator pair that 1) verifies LISP policy 2) are connected */
482 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
484 /* Either rmt mapping is negative or we can't find underlay path.
485 * Try again with petr if configured */
486 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
488 rmt_map = lisp_get_petr_mapping (lcm);
489 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
496 a->action = rmt_map->action;
499 rv = vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
502 if (a->locator_pairs)
503 vec_free (a->locator_pairs);
507 /* add tunnel to fwd entry table */
508 pool_get (lcm->fwd_entry_pool, fe);
509 vnet_lisp_gpe_add_fwd_counters (a, fe - lcm->fwd_entry_pool);
511 fe->locator_pairs = a->locator_pairs;
512 gid_address_copy (&fe->reid, &a->rmt_eid);
515 gid_address_copy (&fe->leid, &a->lcl_eid);
517 gid_address_copy (&fe->leid, lcl_eid);
519 fe->is_src_dst = is_src_dst;
520 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
521 fe - lcm->fwd_entry_pool);
523 /* Add rmt mapping to the vector of adjacent mappings to lcl mapping */
525 hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index);
526 if (!rmts_stored_idxp)
528 pool_get (lcm->lcl_to_rmt_adjacencies, rmts);
529 clib_memset (rmts, 0, sizeof (*rmts));
530 rmts_idx = rmts - lcm->lcl_to_rmt_adjacencies;
531 hash_set (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index, rmts_idx);
535 rmts_idx = (u32) (*rmts_stored_idxp);
536 rmts = pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idx);
538 vec_add1 (rmts[0], dst_map_index);
545 } fwd_entry_mt_arg_t;
548 dp_add_fwd_entry_thread_fn (void *arg)
550 fwd_entry_mt_arg_t *a = arg;
551 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
552 dp_add_fwd_entry (lcm, a->si, a->di);
557 dp_add_fwd_entry_from_mt (u32 si, u32 di)
559 fwd_entry_mt_arg_t a;
561 clib_memset (&a, 0, sizeof (a));
565 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
566 (u8 *) & a, sizeof (a));
571 * Returns vector of adjacencies.
573 * The caller must free the vector returned by this function.
575 * @param vni virtual network identifier
576 * @return vector of adjacencies
579 vnet_lisp_adjacencies_get_by_vni (u32 vni)
581 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
583 lisp_adjacency_t *adjs = 0, adj;
586 pool_foreach(fwd, lcm->fwd_entry_pool,
588 if (gid_address_vni (&fwd->reid) != vni)
591 gid_address_copy (&adj.reid, &fwd->reid);
592 gid_address_copy (&adj.leid, &fwd->leid);
593 vec_add1 (adjs, adj);
601 get_map_server (ip_address_t * a)
603 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
606 vec_foreach (m, lcm->map_servers)
608 if (!ip_address_cmp (&m->address, a))
617 get_map_resolver (ip_address_t * a)
619 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
622 vec_foreach (m, lcm->map_resolvers)
624 if (!ip_address_cmp (&m->address, a))
633 vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
636 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
637 lisp_msmr_t _ms, *ms = &_ms;
639 if (vnet_lisp_enable_disable_status () == 0)
641 clib_warning ("LISP is disabled!");
642 return VNET_API_ERROR_LISP_DISABLED;
647 if (get_map_server (addr))
649 clib_warning ("map-server %U already exists!", format_ip_address,
654 clib_memset (ms, 0, sizeof (*ms));
655 ip_address_copy (&ms->address, addr);
656 vec_add1 (lcm->map_servers, ms[0]);
658 if (vec_len (lcm->map_servers) == 1)
659 lcm->do_map_server_election = 1;
663 for (i = 0; i < vec_len (lcm->map_servers); i++)
665 ms = vec_elt_at_index (lcm->map_servers, i);
666 if (!ip_address_cmp (&ms->address, addr))
668 if (!ip_address_cmp (&ms->address, &lcm->active_map_server))
669 lcm->do_map_server_election = 1;
671 vec_del1 (lcm->map_servers, i);
681 * Add/remove mapping to/from map-cache. Overwriting not allowed.
684 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
685 u32 * map_index_result)
687 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
688 u32 mi, *map_indexp, map_index, i;
689 u32 **rmts = 0, *remote_idxp, rmts_itr, remote_idx;
691 mapping_t *m, *old_map;
694 if (gid_address_type (&a->eid) == GID_ADDR_NSH)
696 if (gid_address_vni (&a->eid) != 0)
698 clib_warning ("Supported only default VNI for NSH!");
699 return VNET_API_ERROR_INVALID_ARGUMENT;
701 if (gid_address_nsh_spi (&a->eid) > MAX_VALUE_U24)
703 clib_warning ("SPI is greater than 24bit!");
704 return VNET_API_ERROR_INVALID_ARGUMENT;
708 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
709 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
712 /* TODO check if overwriting and take appropriate actions */
713 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
715 clib_warning ("eid %U found in the eid-table", format_gid_address,
717 return VNET_API_ERROR_VALUE_EXIST;
720 pool_get (lcm->mapping_pool, m);
721 gid_address_copy (&m->eid, &a->eid);
722 m->locator_set_index = a->locator_set_index;
724 m->action = a->action;
726 m->is_static = a->is_static;
727 m->key = vec_dup (a->key);
728 m->key_id = a->key_id;
729 m->authoritative = a->authoritative;
731 map_index = m - lcm->mapping_pool;
732 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
735 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
737 clib_warning ("Locator set with index %d doesn't exist",
738 a->locator_set_index);
739 return VNET_API_ERROR_INVALID_VALUE;
742 /* add eid to list of eids supported by locator-set */
743 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
744 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
745 a->locator_set_index);
746 vec_add1 (eid_indexes[0], map_index);
751 vec_add1 (lcm->local_mappings_indexes, map_index);
753 map_index_result[0] = map_index;
757 if (mi == GID_LOOKUP_MISS)
759 clib_warning ("eid %U not found in the eid-table",
760 format_gid_address, &a->eid);
761 return VNET_API_ERROR_INVALID_VALUE;
764 /* clear locator-set to eids binding */
765 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
766 a->locator_set_index);
767 for (i = 0; i < vec_len (eid_indexes[0]); i++)
769 map_indexp = vec_elt_at_index (eid_indexes[0], i);
770 if (map_indexp[0] == mi)
773 vec_del1 (eid_indexes[0], i);
775 /* remove local mark if needed */
776 m = pool_elt_at_index (lcm->mapping_pool, mi);
779 /* Remove adjacencies associated with the local mapping */
780 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
784 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
785 vec_foreach (remote_idxp, rmts[0])
787 dp_del_fwd_entry (lcm, remote_idxp[0]);
790 pool_put (lcm->lcl_to_rmt_adjacencies, rmts);
791 hash_unset (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
795 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
797 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
798 if (lm_indexp[0] == mi)
801 vec_del1 (lcm->local_mappings_indexes, k);
805 /* Remove remote (if present) from the vectors of lcl-to-rmts
806 * TODO: Address this in a more efficient way.
809 pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies,
811 vec_foreach_index (rmts_itr, rmts[0])
813 remote_idx = vec_elt (rmts[0], rmts_itr);
814 if (mi == remote_idx)
816 vec_del1 (rmts[0], rmts_itr);
824 /* remove mapping from dictionary */
825 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
826 gid_address_free (&m->eid);
827 pool_put_index (lcm->mapping_pool, mi);
834 * Add/update/delete mapping to/in/from map-cache.
837 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
838 u32 * map_index_result)
844 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
846 if (vnet_lisp_enable_disable_status () == 0)
848 clib_warning ("LISP is disabled!");
849 return VNET_API_ERROR_LISP_DISABLED;
852 vni = gid_address_vni (&a->eid);
853 type = gid_address_type (&a->eid);
854 if (GID_ADDR_IP_PREFIX == type)
855 dp_table = hash_get (lcm->table_id_by_vni, vni);
856 else if (GID_ADDR_MAC == type)
857 dp_table = hash_get (lcm->bd_id_by_vni, vni);
859 if (!dp_table && GID_ADDR_NSH != type)
861 clib_warning ("vni %d not associated to a %s!", vni,
862 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
863 return VNET_API_ERROR_INVALID_VALUE;
866 /* store/remove mapping from map-cache */
867 return vnet_lisp_map_cache_add_del (a, map_index_result);
871 add_l2_arp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
874 u32 version = (u32) kvp->key[0];
875 if (AF_IP6 == version)
876 return (BIHASH_WALK_CONTINUE);
878 u32 bd = (u32) (kvp->key[0] >> 32);
879 hash_set (ht[0], bd, 0);
880 return (BIHASH_WALK_CONTINUE);
884 vnet_lisp_l2_arp_bds_get (void)
886 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
889 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
890 add_l2_arp_bd, &bds);
895 add_ndp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
898 u32 version = (u32) kvp->key[0];
899 if (AF_IP4 == version)
900 return (BIHASH_WALK_CONTINUE);
902 u32 bd = (u32) (kvp->key[0] >> 32);
903 hash_set (ht[0], bd, 0);
904 return (BIHASH_WALK_CONTINUE);
908 vnet_lisp_ndp_bds_get (void)
910 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
913 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
922 } lisp_add_l2_arp_ndp_args_t;
925 add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
927 lisp_add_l2_arp_ndp_args_t *a = arg;
928 lisp_api_l2_arp_entry_t **vector = a->vector, e;
930 u32 version = (u32) kvp->key[0];
931 if (AF_IP6 == version)
932 return (BIHASH_WALK_CONTINUE);
934 u32 bd = (u32) (kvp->key[0] >> 32);
938 mac_copy (e.mac, (void *) &kvp->value);
939 e.ip4 = (u32) kvp->key[1];
940 vec_add1 (vector[0], e);
942 return (BIHASH_WALK_CONTINUE);
945 lisp_api_l2_arp_entry_t *
946 vnet_lisp_l2_arp_entries_get_by_bd (u32 bd)
948 lisp_api_l2_arp_entry_t *entries = 0;
949 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
950 lisp_add_l2_arp_ndp_args_t a;
955 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
956 add_l2_arp_entry, &a);
961 add_ndp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
963 lisp_add_l2_arp_ndp_args_t *a = arg;
964 lisp_api_ndp_entry_t **vector = a->vector, e;
966 u32 version = (u32) kvp->key[0];
967 if (AF_IP4 == version)
968 return (BIHASH_WALK_CONTINUE);
970 u32 bd = (u32) (kvp->key[0] >> 32);
974 mac_copy (e.mac, (void *) &kvp->value);
975 clib_memcpy (e.ip6, &kvp->key[1], 16);
976 vec_add1 (vector[0], e);
978 return (BIHASH_WALK_CONTINUE);
981 lisp_api_ndp_entry_t *
982 vnet_lisp_ndp_entries_get_by_bd (u32 bd)
984 lisp_api_ndp_entry_t *entries = 0;
985 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
986 lisp_add_l2_arp_ndp_args_t a;
991 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
997 vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac, u8 is_add)
999 if (vnet_lisp_enable_disable_status () == 0)
1001 clib_warning ("LISP is disabled!");
1002 return VNET_API_ERROR_LISP_DISABLED;
1005 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1008 u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key);
1011 if (res != GID_LOOKUP_MISS_L2)
1013 clib_warning ("Entry %U exists in DB!", format_gid_address, key);
1014 return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
1016 u64 val = mac_to_u64 (mac);
1017 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val,
1022 if (res == GID_LOOKUP_MISS_L2)
1024 clib_warning ("ONE entry %U not found - cannot delete!",
1025 format_gid_address, key);
1028 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0,
1036 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
1038 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1039 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
1041 if (vnet_lisp_enable_disable_status () == 0)
1043 clib_warning ("LISP is disabled!");
1044 return VNET_API_ERROR_LISP_DISABLED;
1047 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
1048 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
1050 if (!is_l2 && (vni == 0 || dp_id == 0))
1052 clib_warning ("can't add/del default vni-vrf mapping!");
1056 dp_idp = hash_get (dp_table_by_vni[0], vni);
1057 vnip = hash_get (vni_by_dp_table[0], dp_id);
1063 clib_warning ("vni %d or vrf %d already used in vrf/vni "
1064 "mapping!", vni, dp_id);
1067 hash_set (dp_table_by_vni[0], vni, dp_id);
1068 hash_set (vni_by_dp_table[0], dp_id, vni);
1070 /* create dp iface */
1071 dp_add_del_iface (lcm, vni, is_l2, 1 /* is_add */ ,
1072 1 /* with_default_route */ );
1076 if (!dp_idp || !vnip)
1078 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
1079 "mapping!", vni, dp_id);
1082 /* remove dp iface */
1083 dp_add_del_iface (lcm, vni, is_l2, 0 /* is_add */ , 0 /* unused */ );
1085 hash_unset (dp_table_by_vni[0], vni);
1086 hash_unset (vni_by_dp_table[0], dp_id);
1092 /* return 0 if the two locator sets are identical 1 otherwise */
1094 compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
1095 locator_t * new_locators)
1098 locator_t *old_loc, *new_loc;
1100 if (vec_len (old_ls_indexes) != vec_len (new_locators))
1103 for (i = 0; i < vec_len (new_locators); i++)
1105 old_li = vec_elt (old_ls_indexes, i);
1106 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
1108 new_loc = vec_elt_at_index (new_locators, i);
1110 if (locator_cmp (old_loc, new_loc))
1120 gid_address_t *eids_to_be_deleted;
1121 } remove_mapping_args_t;
1124 * Callback invoked when a sub-prefix is found
1127 remove_mapping_if_needed (u32 mi, void *arg)
1130 remove_mapping_args_t *a = arg;
1131 lisp_cp_main_t *lcm = a->lcm;
1135 m = pool_elt_at_index (lcm->mapping_pool, mi);
1139 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
1143 if (0 != vec_len (ls->locator_indices))
1148 if (0 == vec_len (ls->locator_indices))
1153 vec_add1 (a->eids_to_be_deleted, m->eid);
1157 * This function searches map cache and looks for IP prefixes that are subset
1158 * of the provided one. If such prefix is found depending on 'is_negative'
1161 * 1) if is_negative is true and found prefix points to positive mapping,
1162 * then the mapping is removed
1163 * 2) if is_negative is false and found prefix points to negative mapping,
1164 * then the mapping is removed
1167 remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
1171 remove_mapping_args_t a;
1173 clib_memset (&a, 0, sizeof (a));
1175 /* do this only in src/dst mode ... */
1176 if (MR_MODE_SRC_DST != lcm->map_request_mode)
1179 /* ... and only for IP prefix */
1180 if (GID_ADDR_SRC_DST != gid_address_type (eid)
1181 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
1184 a.is_negative = is_negative;
1187 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
1188 remove_mapping_if_needed, &a);
1190 vec_foreach (e, a.eids_to_be_deleted)
1192 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
1194 clib_memset (adj_args, 0, sizeof (adj_args[0]));
1195 gid_address_copy (&adj_args->reid, e);
1196 adj_args->is_add = 0;
1197 if (vnet_lisp_add_del_adjacency (adj_args))
1198 clib_warning ("failed to del adjacency!");
1200 vnet_lisp_del_mapping (e, NULL);
1203 vec_free (a.eids_to_be_deleted);
1207 is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
1209 fib_node_index_t fei;
1210 fib_prefix_t prefix;
1211 fib_entry_flag_t flags;
1213 ip_address_to_fib_prefix (addr, &prefix);
1215 fei = fib_table_lookup (0, &prefix);
1216 flags = fib_entry_get_flags (fei);
1217 return (FIB_ENTRY_FLAG_LOCAL & flags);
1221 * Adds/updates mapping. Does not program forwarding.
1223 * @param a parameters of the new mapping
1224 * @param rlocs vector of remote locators
1225 * @param res_map_index index of the newly created mapping
1226 * @param locators_changed indicator if locators were updated in the mapping
1227 * @return return code
1230 vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
1232 u32 * res_map_index, u8 * is_updated)
1234 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1235 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1236 u32 mi, ls_index = 0, dst_map_index;
1240 if (vnet_lisp_enable_disable_status () == 0)
1242 clib_warning ("LISP is disabled!");
1243 return VNET_API_ERROR_LISP_DISABLED;
1247 res_map_index[0] = ~0;
1251 clib_memset (ls_args, 0, sizeof (ls_args[0]));
1253 ls_args->locators = rlocs;
1254 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
1255 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1257 /* check if none of the locators match locally configured address */
1258 vec_foreach (loc, rlocs)
1260 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1261 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1263 clib_warning ("RLOC %U matches a local address!",
1264 format_gid_address, &loc->address);
1265 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1269 /* overwrite: if mapping already exists, decide if locators should be
1270 * updated and be done */
1271 if (old_map && gid_address_cmp (&old_map->eid, &a->eid) == 0)
1273 if (!a->is_static && (old_map->is_static || old_map->local))
1275 /* do not overwrite local or static remote mappings */
1276 clib_warning ("mapping %U rejected due to collision with local "
1277 "or static remote mapping!", format_gid_address,
1282 locator_set_t *old_ls;
1284 /* update mapping attributes */
1285 old_map->action = a->action;
1286 if (old_map->action != a->action && NULL != is_updated)
1289 old_map->authoritative = a->authoritative;
1290 old_map->ttl = a->ttl;
1292 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1293 old_map->locator_set_index);
1294 if (compare_locators (lcm, old_ls->locator_indices, ls_args->locators))
1296 /* set locator-set index to overwrite */
1297 ls_args->is_add = 1;
1298 ls_args->index = old_map->locator_set_index;
1299 vnet_lisp_add_del_locator_set (ls_args, 0);
1304 res_map_index[0] = mi;
1311 remove_overlapping_sub_prefixes (lcm, &a->eid, 0 == ls_args->locators);
1313 ls_args->is_add = 1;
1314 ls_args->index = ~0;
1316 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1320 a->locator_set_index = ls_index;
1321 vnet_lisp_map_cache_add_del (a, &dst_map_index);
1324 res_map_index[0] = dst_map_index;
1332 * Removes a mapping. Does not program forwarding.
1334 * @param eid end-host identifier
1335 * @param res_map_index index of the removed mapping
1336 * @return return code
1339 vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index)
1341 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1342 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1343 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1347 clib_memset (ls_args, 0, sizeof (ls_args[0]));
1348 clib_memset (m_args, 0, sizeof (m_args[0]));
1350 res_map_index[0] = ~0;
1352 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1353 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1355 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1357 clib_warning ("cannot delete mapping for eid %U",
1358 format_gid_address, eid);
1363 gid_address_copy (&m_args->eid, eid);
1364 m_args->locator_set_index = old_map->locator_set_index;
1366 ls_args->is_add = 0;
1367 ls_args->index = old_map->locator_set_index;
1369 /* delete timer associated to the mapping if any */
1370 if (old_map->timer_set)
1371 TW (tw_timer_stop) (&lcm->wheel, old_map->timer_handle);
1373 /* delete locator set */
1374 vnet_lisp_add_del_locator_set (ls_args, 0);
1376 /* delete mapping associated from map-cache */
1377 vnet_lisp_map_cache_add_del (m_args, 0);
1379 /* return old mapping index */
1381 res_map_index[0] = mi;
1388 vnet_lisp_clear_all_remote_adjacencies (void)
1391 u32 mi, *map_indices = 0, *map_indexp;
1392 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1393 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1394 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1397 pool_foreach_index (mi, lcm->mapping_pool,
1399 vec_add1 (map_indices, mi);
1403 vec_foreach (map_indexp, map_indices)
1405 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1408 dp_del_fwd_entry (lcm, map_indexp[0]);
1410 dm_args->is_add = 0;
1411 gid_address_copy (&dm_args->eid, &map->eid);
1412 dm_args->locator_set_index = map->locator_set_index;
1414 /* delete mapping associated to fwd entry */
1415 vnet_lisp_map_cache_add_del (dm_args, 0);
1419 ls->index = map->locator_set_index;
1420 /* delete locator set */
1421 rv = vnet_lisp_add_del_locator_set (ls, 0);
1429 vec_free (map_indices);
1434 * Adds adjacency or removes forwarding entry associated to remote mapping.
1435 * Note that adjacencies are not stored, they only result in forwarding entries
1439 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1441 lisp_cp_main_t *lcm = &lisp_control_main;
1442 u32 local_mi, remote_mi = ~0;
1444 if (vnet_lisp_enable_disable_status () == 0)
1446 clib_warning ("LISP is disabled!");
1447 return VNET_API_ERROR_LISP_DISABLED;
1450 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1451 &a->reid, &a->leid);
1452 if (GID_LOOKUP_MISS == remote_mi)
1454 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1455 format_gid_address, &a->reid);
1462 /* check if source eid has an associated mapping. If pitr mode is on,
1463 * just use the pitr's mapping */
1464 if (lcm->flags & LISP_FLAG_PITR_MODE)
1466 if (lcm->pitr_map_index != ~0)
1468 local_mi = lcm->pitr_map_index;
1472 /* PITR mode is on, but no mapping is configured */
1478 if (gid_address_type (&a->reid) == GID_ADDR_NSH)
1480 if (lcm->nsh_map_index == ~0)
1481 local_mi = GID_LOOKUP_MISS;
1483 local_mi = lcm->nsh_map_index;
1487 local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1492 if (GID_LOOKUP_MISS == local_mi)
1494 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1495 format_gid_address, &a->leid);
1500 /* update forwarding */
1501 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1504 dp_del_fwd_entry (lcm, remote_mi);
1510 vnet_lisp_set_map_request_mode (u8 mode)
1512 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1514 if (vnet_lisp_enable_disable_status () == 0)
1516 clib_warning ("LISP is disabled!");
1517 return VNET_API_ERROR_LISP_DISABLED;
1520 if (mode >= _MR_MODE_MAX)
1522 clib_warning ("Invalid LISP map request mode %d!", mode);
1523 return VNET_API_ERROR_INVALID_ARGUMENT;
1526 lcm->map_request_mode = mode;
1531 vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
1533 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1534 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
1535 u32 locator_set_index = ~0;
1539 if (vnet_lisp_enable_disable_status () == 0)
1541 clib_warning ("LISP is disabled!");
1542 return VNET_API_ERROR_LISP_DISABLED;
1547 if (lcm->nsh_map_index == (u32) ~ 0)
1549 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1552 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1555 locator_set_index = p[0];
1557 pool_get (lcm->mapping_pool, m);
1558 clib_memset (m, 0, sizeof *m);
1559 m->locator_set_index = locator_set_index;
1562 lcm->nsh_map_index = m - lcm->mapping_pool;
1564 if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
1570 if (lcm->nsh_map_index != (u32) ~ 0)
1572 /* remove NSH mapping */
1573 pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
1574 lcm->nsh_map_index = ~0;
1575 vnet_lisp_gpe_del_nsh_iface (lgm);
1582 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1584 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1585 u32 locator_set_index = ~0;
1589 if (vnet_lisp_enable_disable_status () == 0)
1591 clib_warning ("LISP is disabled!");
1592 return VNET_API_ERROR_LISP_DISABLED;
1595 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1598 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1601 locator_set_index = p[0];
1605 pool_get (lcm->mapping_pool, m);
1606 m->locator_set_index = locator_set_index;
1609 lcm->pitr_map_index = m - lcm->mapping_pool;
1613 /* remove pitr mapping */
1614 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1615 lcm->pitr_map_index = ~0;
1621 vnet_lisp_map_register_fallback_threshold_set (u32 value)
1623 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1626 return VNET_API_ERROR_INVALID_ARGUMENT;
1629 lcm->max_expired_map_registers = value;
1634 vnet_lisp_map_register_fallback_threshold_get (void)
1636 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1637 return lcm->max_expired_map_registers;
1641 * Configure Proxy-ETR
1643 * @param ip PETR's IP address
1644 * @param is_add Flag that indicates if this is an addition or removal
1646 * return 0 on success
1649 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1651 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1654 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1657 if (vnet_lisp_enable_disable_status () == 0)
1659 clib_warning ("LISP is disabled!");
1660 return VNET_API_ERROR_LISP_DISABLED;
1663 clib_memset (ls_args, 0, sizeof (*ls_args));
1667 /* Create placeholder petr locator-set */
1668 clib_memset (&loc, 0, sizeof (loc));
1669 gid_address_from_ip (&loc.address, ip);
1671 loc.state = loc.weight = 1;
1674 ls_args->is_add = 1;
1675 ls_args->index = ~0;
1676 vec_add1 (ls_args->locators, loc);
1677 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1679 /* Add petr mapping */
1680 pool_get (lcm->mapping_pool, m);
1681 m->locator_set_index = ls_index;
1682 lcm->petr_map_index = m - lcm->mapping_pool;
1684 /* Enable use-petr */
1685 lcm->flags |= LISP_FLAG_USE_PETR;
1689 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1691 /* Remove petr locator */
1692 ls_args->is_add = 0;
1693 ls_args->index = m->locator_set_index;
1694 vnet_lisp_add_del_locator_set (ls_args, 0);
1696 /* Remove petr mapping */
1697 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1699 /* Disable use-petr */
1700 lcm->flags &= ~LISP_FLAG_USE_PETR;
1701 lcm->petr_map_index = ~0;
1706 /* cleans locator to locator-set data and removes locators not part of
1707 * any locator-set */
1709 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1711 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1712 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1713 for (i = 0; i < vec_len (ls->locator_indices); i++)
1715 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1716 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1718 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1720 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1721 if (ls_indexp[0] == lsi)
1725 /* delete index for removed locator-set */
1726 vec_del1 (ls_indexes[0], j);
1728 /* delete locator if it's part of no locator-set */
1729 if (vec_len (ls_indexes[0]) == 0)
1731 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1732 vec_add1 (to_be_deleted, i);
1738 for (i = 0; i < vec_len (to_be_deleted); i++)
1740 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1741 vec_del1 (ls->locator_indices, loc_indexp[0]);
1743 vec_free (to_be_deleted);
1747 static inline uword *
1748 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1750 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1755 /* find locator-set */
1759 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1770 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1776 ASSERT (ls != NULL);
1777 ASSERT (loc != NULL);
1779 vec_foreach (locit, ls->locator_indices)
1781 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1782 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1783 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1785 clib_warning ("Duplicate locator");
1786 return VNET_API_ERROR_VALUE_EXIST;
1794 update_adjacencies_by_map_index (lisp_cp_main_t * lcm,
1795 u32 mapping_index, u8 remove_only)
1799 uword *fei = 0, *rmts_idxp = 0;
1800 u32 **rmts = 0, *remote_idxp = 0, *rmts_copy = 0;
1801 vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
1802 clib_memset (a, 0, sizeof (*a));
1804 map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
1808 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mapping_index);
1812 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
1813 rmts_copy = vec_dup (rmts[0]);
1815 vec_foreach (remote_idxp, rmts_copy)
1817 fei = hash_get (lcm->fwd_entry_by_mapping_index, remote_idxp[0]);
1821 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1823 gid_address_copy (&a->leid, &fwd->leid);
1824 gid_address_copy (&a->reid, &fwd->reid);
1825 vnet_lisp_add_del_adjacency (a);
1830 vnet_lisp_add_del_adjacency (a);
1833 vec_free (rmts_copy);
1838 fei = hash_get (lcm->fwd_entry_by_mapping_index, mapping_index);
1842 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1844 gid_address_copy (&a->leid, &fwd->leid);
1845 gid_address_copy (&a->reid, &fwd->reid);
1846 vnet_lisp_add_del_adjacency (a);
1851 vnet_lisp_add_del_adjacency (a);
1857 update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm,
1858 u32 ls_index, u8 remove_only)
1863 if (vec_len (lcm->locator_set_to_eids) <= ls_index)
1866 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
1868 for (i = 0; i < vec_len (eid_indexes[0]); i++)
1870 map_indexp = vec_elt_at_index (eid_indexes[0], i);
1871 update_adjacencies_by_map_index (lcm, map_indexp[0], remove_only);
1876 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1877 u32 ls_index, u32 loc_id)
1879 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1880 u32 **ls_indexes = NULL;
1882 ASSERT (ls != NULL);
1883 ASSERT (locit != NULL);
1885 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1886 pool_put_index (lcm->locator_pool, locit[0]);
1887 vec_del1 (ls->locator_indices, loc_id);
1888 vec_del1 (ls_indexes[0], ls_index);
1892 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1893 locator_set_t * ls, u32 * ls_result)
1895 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1896 locator_t *loc = NULL, *itloc = NULL;
1897 uword _p = (u32) ~ 0, *p = &_p;
1898 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1904 if (vnet_lisp_enable_disable_status () == 0)
1906 clib_warning ("LISP is disabled!");
1907 return VNET_API_ERROR_LISP_DISABLED;
1910 p = get_locator_set_index (a, p);
1913 clib_warning ("locator-set %v doesn't exist", a->name);
1914 return VNET_API_ERROR_INVALID_ARGUMENT;
1919 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1922 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1924 return VNET_API_ERROR_INVALID_ARGUMENT;
1931 ls_result[0] = p[0];
1933 /* allocate locators */
1934 vec_foreach (itloc, a->locators)
1936 ret = is_locator_in_locator_set (lcm, ls, itloc);
1942 pool_get (lcm->locator_pool, loc);
1944 loc_index = loc - lcm->locator_pool;
1946 vec_add1 (ls->locator_indices, loc_index);
1948 vec_validate (lcm->locator_to_locator_sets, loc_index);
1949 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1951 vec_add1 (ls_indexes[0], p[0]);
1959 vec_foreach (itloc, a->locators)
1963 vec_foreach (locit, ls->locator_indices)
1965 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1967 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1970 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1972 else if (0 == loc->local &&
1973 !gid_address_cmp (&loc->address, &itloc->address))
1976 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1981 /* update fwd entries using this locator in DP */
1982 update_fwd_entries_by_locator_set (lcm, ls_index,
1983 vec_len (ls->locator_indices)
1996 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
1999 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2001 uword _p = (u32) ~ 0, *p = &_p;
2006 if (vnet_lisp_enable_disable_status () == 0)
2008 clib_warning ("LISP is disabled!");
2009 return VNET_API_ERROR_LISP_DISABLED;
2014 p = get_locator_set_index (a, p);
2017 if (p && p[0] != (u32) ~ 0)
2019 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2022 clib_warning ("locator-set %d to be overwritten doesn't exist!",
2027 /* clean locator to locator-set vectors and remove locators if
2028 * they're not part of another locator-set */
2029 clean_locator_to_locator_set (lcm, p[0]);
2031 /* remove locator indices from locator set */
2032 vec_free (ls->locator_indices);
2037 ls_result[0] = p[0];
2039 /* new locator-set */
2042 pool_get (lcm->locator_set_pool, ls);
2043 clib_memset (ls, 0, sizeof (*ls));
2044 ls_index = ls - lcm->locator_set_pool;
2048 ls->name = vec_dup (a->name);
2050 if (!lcm->locator_set_index_by_name)
2051 lcm->locator_set_index_by_name =
2052 hash_create_vec ( /* size */ 0, sizeof (ls->name[0]),
2054 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
2057 /* mark as local locator-set */
2058 vec_add1 (lcm->local_locator_set_indexes, ls_index);
2060 ls->local = a->local;
2062 ls_result[0] = ls_index;
2065 ret = vnet_lisp_add_del_locator (a, ls, NULL);
2073 p = get_locator_set_index (a, p);
2076 clib_warning ("locator-set %v doesn't exists", a->name);
2080 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2083 clib_warning ("locator-set with index %d doesn't exists", p[0]);
2087 if (lcm->mreq_itr_rlocs == p[0])
2089 clib_warning ("Can't delete the locator-set used to constrain "
2090 "the itr-rlocs in map-requests!");
2094 if (vec_len (lcm->locator_set_to_eids) != 0)
2096 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
2097 if (vec_len (eid_indexes[0]) != 0)
2100 ("Can't delete a locator that supports a mapping!");
2105 /* clean locator to locator-sets data */
2106 clean_locator_to_locator_set (lcm, p[0]);
2112 vec_foreach_index (it, lcm->local_locator_set_indexes)
2114 lsi = vec_elt (lcm->local_locator_set_indexes, it);
2117 vec_del1 (lcm->local_locator_set_indexes, it);
2121 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
2123 vec_free (ls->name);
2124 vec_free (ls->locator_indices);
2125 pool_put (lcm->locator_set_pool, ls);
2131 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
2133 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2135 lcm->rloc_probing = is_enable;
2140 vnet_lisp_map_register_enable_disable (u8 is_enable)
2142 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2144 lcm->map_registering = is_enable;
2149 lisp_cp_register_dst_port (vlib_main_t * vm)
2151 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
2152 lisp_cp_input_node.index, 1 /* is_ip4 */ );
2153 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
2154 lisp_cp_input_node.index, 0 /* is_ip4 */ );
2158 lisp_cp_unregister_dst_port (vlib_main_t * vm)
2160 udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp, 0 /* is_ip4 */ );
2161 udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp6, 1 /* is_ip4 */ );
2165 * lisp_cp_enable_l2_l3_ifaces
2167 * Enable all l2 and l3 ifaces
2170 lisp_cp_enable_l2_l3_ifaces (lisp_cp_main_t * lcm, u8 with_default_route)
2175 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
2176 dp_add_del_iface(lcm, vni, /* is_l2 */ 0, /* is_add */1,
2177 with_default_route);
2179 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
2180 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1,
2181 with_default_route);
2187 lisp_cp_disable_l2_l3_ifaces (lisp_cp_main_t * lcm)
2191 /* clear interface table */
2192 hash_free (lcm->fwd_entry_by_mapping_index);
2193 pool_free (lcm->fwd_entry_pool);
2194 /* Clear state tracking rmt-lcl fwd entries */
2196 pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
2201 hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
2202 pool_free (lcm->lcl_to_rmt_adjacencies);
2206 vnet_lisp_enable_disable (u8 is_enable)
2208 clib_error_t *error = 0;
2209 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2210 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
2212 a->is_en = is_enable;
2213 error = vnet_lisp_gpe_enable_disable (a);
2216 return clib_error_return (0, "failed to %s data-plane!",
2217 a->is_en ? "enable" : "disable");
2220 /* decide what to do based on mode */
2222 if (lcm->flags & LISP_FLAG_XTR_MODE)
2226 lisp_cp_register_dst_port (lcm->vlib_main);
2227 lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
2231 lisp_cp_unregister_dst_port (lcm->vlib_main);
2232 lisp_cp_disable_l2_l3_ifaces (lcm);
2236 if (lcm->flags & LISP_FLAG_PETR_MODE)
2238 /* if in xTR mode, the LISP ports were already (un)registered above */
2239 if (!(lcm->flags & LISP_FLAG_XTR_MODE))
2242 lisp_cp_register_dst_port (lcm->vlib_main);
2244 lisp_cp_unregister_dst_port (lcm->vlib_main);
2248 if (lcm->flags & LISP_FLAG_PITR_MODE)
2252 /* install interfaces, but no default routes */
2253 lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
2257 lisp_cp_disable_l2_l3_ifaces (lcm);
2262 vnet_lisp_create_retry_process (lcm);
2264 /* update global flag */
2265 lcm->is_enabled = is_enable;
2271 vnet_lisp_enable_disable_status (void)
2273 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2274 return lcm->is_enabled;
2278 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
2280 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2282 lisp_msmr_t _mr, *mr = &_mr;
2284 if (vnet_lisp_enable_disable_status () == 0)
2286 clib_warning ("LISP is disabled!");
2287 return VNET_API_ERROR_LISP_DISABLED;
2293 if (get_map_resolver (&a->address))
2295 clib_warning ("map-resolver %U already exists!", format_ip_address,
2300 clib_memset (mr, 0, sizeof (*mr));
2301 ip_address_copy (&mr->address, &a->address);
2302 vec_add1 (lcm->map_resolvers, *mr);
2304 if (vec_len (lcm->map_resolvers) == 1)
2305 lcm->do_map_resolver_election = 1;
2309 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
2311 mr = vec_elt_at_index (lcm->map_resolvers, i);
2312 if (!ip_address_cmp (&mr->address, &a->address))
2314 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
2315 lcm->do_map_resolver_election = 1;
2317 vec_del1 (lcm->map_resolvers, i);
2326 vnet_lisp_map_register_set_ttl (u32 ttl)
2328 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2329 lcm->map_register_ttl = ttl;
2334 vnet_lisp_map_register_get_ttl (void)
2336 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2337 return lcm->map_register_ttl;
2341 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
2343 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2346 if (vnet_lisp_enable_disable_status () == 0)
2348 clib_warning ("LISP is disabled!");
2349 return VNET_API_ERROR_LISP_DISABLED;
2354 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
2357 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
2358 return VNET_API_ERROR_INVALID_ARGUMENT;
2361 lcm->mreq_itr_rlocs = p[0];
2365 lcm->mreq_itr_rlocs = ~0;
2371 /* Statistics (not really errors) */
2372 #define foreach_lisp_cp_lookup_error \
2374 _(MAP_REQUESTS_SENT, "map-request sent") \
2375 _(ARP_REPLY_TX, "ARP replies sent") \
2376 _(NDP_NEIGHBOR_ADVERTISEMENT_TX, \
2377 "neighbor advertisement sent")
2379 static char *lisp_cp_lookup_error_strings[] = {
2380 #define _(sym,string) string,
2381 foreach_lisp_cp_lookup_error
2387 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
2388 foreach_lisp_cp_lookup_error
2390 LISP_CP_LOOKUP_N_ERROR,
2391 } lisp_cp_lookup_error_t;
2395 LISP_CP_LOOKUP_NEXT_DROP,
2396 LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
2397 LISP_CP_LOOKUP_N_NEXT,
2398 } lisp_cp_lookup_next_t;
2402 gid_address_t dst_eid;
2403 ip_address_t map_resolver_ip;
2404 } lisp_cp_lookup_trace_t;
2407 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
2409 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2410 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2411 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
2413 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
2414 format_ip_address, &t->map_resolver_ip, format_gid_address,
2420 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
2421 ip_address_t * sloc)
2426 if (vec_len (lcm->map_resolvers) == 0)
2428 clib_warning ("No map-resolver configured");
2432 /* find the first mr ip we have a route to and the ip of the
2433 * iface that has a route to it */
2434 vec_foreach (mrit, lcm->map_resolvers)
2437 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
2439 ip_address_copy (mr_ip, a);
2441 /* also update globals */
2446 clib_warning ("Can't find map-resolver and local interface ip!");
2450 static gid_address_t *
2451 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
2457 ip_interface_address_t *ia = 0;
2458 gid_address_t gid_data, *gid = &gid_data;
2459 gid_address_t *rlocs = 0;
2460 ip_prefix_t *ippref = &gid_address_ippref (gid);
2461 ip_address_t *rloc = &ip_prefix_addr (ippref);
2463 clib_memset (gid, 0, sizeof (gid[0]));
2464 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
2465 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
2467 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
2468 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
2470 /* Add ipv4 locators first TODO sort them */
2473 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2474 loc->sw_if_index, 1 /* unnumbered */,
2476 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
2477 ip_address_set (rloc, addr, AF_IP4);
2478 ip_prefix_len (ippref) = 32;
2479 ip_prefix_normalize (ippref);
2480 vec_add1 (rlocs, gid[0]);
2483 /* Add ipv6 locators */
2484 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2485 loc->sw_if_index, 1 /* unnumbered */,
2487 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
2488 ip_address_set (rloc, addr, AF_IP6);
2489 ip_prefix_len (ippref) = 128;
2490 ip_prefix_normalize (ippref);
2491 vec_add1 (rlocs, gid[0]);
2499 static vlib_buffer_t *
2500 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
2501 ip_address_t * sloc, ip_address_t * rloc,
2502 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
2506 vlib_main_t *vm = lcm->vlib_main;
2508 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2510 clib_warning ("Can't allocate buffer for Map-Request!");
2514 b = vlib_get_buffer (vm, bi);
2516 /* leave some space for the encap headers */
2517 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2520 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2521 1 /* rloc probe */ , nonce_res);
2523 /* push outer ip header */
2524 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2532 static vlib_buffer_t *
2533 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2534 gid_address_t * seid, gid_address_t * deid,
2535 locator_set_t * loc_set, ip_address_t * mr_ip,
2536 ip_address_t * sloc, u8 is_smr_invoked,
2537 u64 * nonce_res, u32 * bi_res)
2541 gid_address_t *rlocs = 0;
2542 vlib_main_t *vm = lcm->vlib_main;
2544 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2546 clib_warning ("Can't allocate buffer for Map-Request!");
2550 b = vlib_get_buffer (vm, bi);
2553 /* leave some space for the encap headers */
2554 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2557 rlocs = build_itr_rloc_list (lcm, loc_set);
2559 if (MR_MODE_SRC_DST == lcm->map_request_mode
2560 && GID_ADDR_SRC_DST != gid_address_type (deid))
2563 clib_memset (&sd, 0, sizeof (sd));
2564 build_src_dst (&sd, seid, deid);
2565 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2566 0 /* rloc probe */ , nonce_res);
2571 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2572 0 /* rloc probe */ , nonce_res);
2575 /* push ecm: udp-ip-lisp */
2576 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2578 /* push outer ip header */
2579 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2589 reset_pending_mr_counters (pending_map_request_t * r)
2591 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2595 #define foreach_msmr \
2601 elect_map_ ## name (lisp_cp_main_t * lcm) \
2604 vec_foreach (mr, lcm->map_ ## name ## s) \
2608 ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
2609 lcm->do_map_ ## name ## _election = 0; \
2618 free_map_register_records (mapping_t * maps)
2621 vec_foreach (map, maps) vec_free (map->locators);
2627 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2628 ip_address_t * probed_loc)
2631 locator_t *loc, new;
2632 ip_interface_address_t *ia = 0;
2634 ip_address_t *new_ip = &gid_address_ip (&new.address);
2637 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2639 vec_foreach (li, ls->locator_indices)
2641 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2646 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2647 loc->sw_if_index, 1 /* unnumbered */,
2649 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2651 ip_address_set (new_ip, addr, AF_IP4);
2654 /* Add ipv6 locators */
2655 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2656 loc->sw_if_index, 1 /* unnumbered */,
2658 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2660 ip_address_set (new_ip, addr, AF_IP6);
2664 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2667 vec_add1 (m->locators, new);
2672 build_map_register_record_list (lisp_cp_main_t * lcm)
2674 mapping_t *recs = 0, rec, *m;
2677 pool_foreach(m, lcm->mapping_pool,
2679 /* for now build only local mappings */
2684 add_locators (lcm, &rec, m->locator_set_index, NULL);
2685 vec_add1 (recs, rec);
2692 static vnet_crypto_alg_t
2693 lisp_key_type_to_crypto_alg (lisp_key_type_t key_id)
2698 return VNET_CRYPTO_ALG_HMAC_SHA1;
2699 case HMAC_SHA_256_128:
2700 return VNET_CRYPTO_ALG_HMAC_SHA256;
2702 clib_warning ("unsupported encryption key type: %d!", key_id);
2705 return VNET_CRYPTO_ALG_NONE;
2708 static vnet_crypto_op_id_t
2709 lisp_key_type_to_crypto_op (lisp_key_type_t key_id)
2714 return VNET_CRYPTO_OP_SHA1_HMAC;
2715 case HMAC_SHA_256_128:
2716 return VNET_CRYPTO_OP_SHA256_HMAC;
2718 clib_warning ("unsupported encryption key type: %d!", key_id);
2721 return VNET_CRYPTO_OP_NONE;
2725 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2726 lisp_key_type_t key_id, u8 * key,
2727 u16 auth_data_len, u32 msg_len)
2729 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2730 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2731 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2732 vnet_crypto_op_t _op, *op = &_op;
2733 vnet_crypto_key_index_t ki;
2735 vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id));
2737 op->digest = MREG_DATA (map_reg_hdr);
2738 op->src = (u8 *) map_reg_hdr;
2742 ki = vnet_crypto_key_add (lcm->vlib_main,
2743 lisp_key_type_to_crypto_alg (key_id), key,
2748 vnet_crypto_process_ops (lcm->vlib_main, op, 1);
2749 vnet_crypto_key_del (lcm->vlib_main, ki);
2754 static vlib_buffer_t *
2755 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2756 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2757 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2762 u32 bi, auth_data_len = 0, msg_len = 0;
2763 vlib_main_t *vm = lcm->vlib_main;
2765 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2767 clib_warning ("Can't allocate buffer for Map-Register!");
2771 b = vlib_get_buffer (vm, bi);
2773 /* leave some space for the encap headers */
2774 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2776 auth_data_len = auth_data_len_by_key_id (key_id);
2777 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2778 auth_data_len, nonce_res,
2781 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2784 /* push outer ip header */
2785 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2794 get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
2797 while (lcm->do_map_ ## name ## _election \
2798 | (0 == ip_fib_get_first_egress_ip_for_dst \
2799 (lcm, &lcm->active_map_ ##name, ip))) \
2801 if (0 == elect_map_ ## name (lcm)) \
2802 /* all map resolvers/servers are down */ \
2804 /* restart MR/MS checking by marking all of them up */ \
2805 vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
2814 /* CP output statistics */
2815 #define foreach_lisp_cp_output_error \
2816 _(MAP_REGISTERS_SENT, "map-registers sent") \
2817 _(MAP_REQUESTS_SENT, "map-requests sent") \
2818 _(RLOC_PROBES_SENT, "rloc-probes sent")
2819 static char *lisp_cp_output_error_strings[] = {
2820 #define _(sym,string) string,
2821 foreach_lisp_cp_output_error
2827 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2828 foreach_lisp_cp_output_error
2830 LISP_CP_OUTPUT_N_ERROR,
2831 } lisp_cp_output_error_t;
2834 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2835 vlib_frame_t * from_frame)
2840 /* placeholder node used only for statistics */
2842 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2843 .function = lisp_cp_output,
2844 .name = "lisp-cp-output",
2845 .vector_size = sizeof (u32),
2846 .format_trace = format_lisp_cp_input_trace,
2847 .type = VLIB_NODE_TYPE_INTERNAL,
2849 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2850 .error_strings = lisp_cp_output_error_strings,
2852 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2855 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2861 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2862 u32 local_locator_set_index, ip_address_t * sloc,
2863 ip_address_t * rloc)
2870 u32 next_index, *to_next;
2871 gid_address_t *itr_rlocs;
2873 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2874 itr_rlocs = build_itr_rloc_list (lcm, ls);
2876 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2877 vec_free (itr_rlocs);
2881 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2883 next_index = (ip_addr_version (rloc) == AF_IP4) ?
2884 ip4_lookup_node.index : ip6_lookup_node.index;
2886 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2888 /* Enqueue the packet */
2889 to_next = vlib_frame_vector_args (f);
2892 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2898 send_rloc_probes (lisp_cp_main_t * lcm)
2904 u32 si, rloc_probes_sent = 0;
2907 pool_foreach (e, lcm->fwd_entry_pool,
2909 if (vec_len (e->locator_pairs) == 0)
2912 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2915 clib_warning ("internal error: cannot find local eid %U in "
2916 "map-cache!", format_gid_address, &e->leid);
2919 lm = pool_elt_at_index (lcm->mapping_pool, si);
2921 /* get the best (lowest) priority */
2922 lprio = e->locator_pairs[0].priority;
2924 /* send rloc-probe for pair(s) with the best remote locator priority */
2925 vec_foreach (lp, e->locator_pairs)
2927 if (lp->priority != lprio)
2930 /* get first remote locator */
2931 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2938 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2939 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2945 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2947 pending_map_register_t *pmr;
2948 u32 bi, map_registers_sent = 0;
2953 u32 next_index, *to_next;
2954 mapping_t *records, *r, *group, *k;
2956 if (get_egress_map_server_ip (lcm, &sloc) < 0)
2959 records = build_map_register_record_list (lcm);
2963 vec_foreach (r, records)
2966 u8 key_id = r->key_id;
2969 continue; /* no secret key -> map-register cannot be sent */
2972 vec_add1 (group, r[0]);
2974 /* group mappings that share common key */
2975 for (k = r + 1; k < vec_end (records); k++)
2977 if (k->key_id != r->key_id)
2980 if (vec_is_equal (k->key, r->key))
2982 vec_add1 (group, k[0]);
2983 k->key = 0; /* don't process this mapping again */
2987 b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
2988 want_map_notif, group, key_id, key, &bi);
2993 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2995 next_index = (ip_addr_version (&lcm->active_map_server) == AF_IP4) ?
2996 ip4_lookup_node.index : ip6_lookup_node.index;
2998 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3000 /* Enqueue the packet */
3001 to_next = vlib_frame_vector_args (f);
3004 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3005 map_registers_sent++;
3007 pool_get (lcm->pending_map_registers_pool, pmr);
3008 clib_memset (pmr, 0, sizeof (*pmr));
3009 pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
3010 hash_set (lcm->map_register_messages_by_nonce, nonce,
3011 pmr - lcm->pending_map_registers_pool);
3013 free_map_register_records (records);
3015 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3016 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
3017 map_registers_sent);
3022 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
3023 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
3025 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
3026 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
3029 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
3030 gid_address_t * seid, gid_address_t * deid,
3031 u8 is_smr_invoked, u8 is_resend)
3033 u32 next_index, bi = 0, *to_next, map_index;
3037 locator_set_t *loc_set;
3039 pending_map_request_t *pmr, *duplicate_pmr = 0;
3043 /* if there is already a pending request remember it */
3046 pool_foreach(pmr, lcm->pending_map_requests_pool,
3048 if (!gid_address_cmp (&pmr->src, seid)
3049 && !gid_address_cmp (&pmr->dst, deid))
3051 duplicate_pmr = pmr;
3057 if (!is_resend && duplicate_pmr)
3059 /* don't send the request if there is a pending map request already */
3063 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
3065 /* get locator-set for seid */
3066 if (!pitr_mode && gid_address_type (deid) != GID_ADDR_NSH)
3068 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
3069 if (map_index == ~0)
3071 clib_warning ("No local mapping found in eid-table for %U!",
3072 format_gid_address, seid);
3076 map = pool_elt_at_index (lcm->mapping_pool, map_index);
3081 ("Mapping found for src eid %U is not marked as local!",
3082 format_gid_address, seid);
3085 ls_index = map->locator_set_index;
3091 if (lcm->pitr_map_index != ~0)
3094 pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
3095 ls_index = map->locator_set_index;
3104 if (lcm->nsh_map_index == (u32) ~ 0)
3106 clib_warning ("No locator-set defined for NSH!");
3111 map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
3112 ls_index = map->locator_set_index;
3117 /* overwrite locator set if map-request itr-rlocs configured */
3118 if (~0 != lcm->mreq_itr_rlocs)
3120 ls_index = lcm->mreq_itr_rlocs;
3123 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
3125 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
3128 duplicate_pmr->to_be_removed = 1;
3132 /* build the encapsulated map request */
3133 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
3134 &lcm->active_map_resolver,
3135 &sloc, is_smr_invoked, &nonce, &bi);
3140 /* set fib index to default and lookup node */
3141 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3142 next_index = (ip_addr_version (&lcm->active_map_resolver) == AF_IP4) ?
3143 ip4_lookup_node.index : ip6_lookup_node.index;
3145 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3147 /* Enqueue the packet */
3148 to_next = vlib_frame_vector_args (f);
3151 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3153 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3154 LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1);
3157 /* if there is a pending request already update it */
3159 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
3161 /* remove the oldest nonce */
3162 u64 CLIB_UNUSED (tmp), *nonce_del;
3163 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
3164 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
3165 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
3168 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
3169 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3170 duplicate_pmr - lcm->pending_map_requests_pool);
3174 /* add map-request to pending requests table */
3175 pool_get (lcm->pending_map_requests_pool, pmr);
3176 clib_memset (pmr, 0, sizeof (*pmr));
3177 gid_address_copy (&pmr->src, seid);
3178 gid_address_copy (&pmr->dst, deid);
3179 clib_fifo_add1 (pmr->nonces, nonce);
3180 pmr->is_smr_invoked = is_smr_invoked;
3181 reset_pending_mr_counters (pmr);
3182 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3183 pmr - lcm->pending_map_requests_pool);
3190 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
3192 ip4_header_t *ip4 = hdr;
3195 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
3197 ip_address_set (src, &ip4->src_address, AF_IP4);
3198 ip_address_set (dst, &ip4->dst_address, AF_IP4);
3203 ip_address_set (src, &ip6->src_address, AF_IP6);
3204 ip_address_set (dst, &ip6->dst_address, AF_IP6);
3209 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3213 u32 vni = ~0, table_id = ~0;
3215 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
3223 vnip = hash_get (lcm->vni_by_table_id, table_id);
3227 clib_warning ("vrf %d is not mapped to any vni!", table_id);
3233 lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
3237 l2input_main_t *l2im = &l2input_main;
3238 l2_input_config_t *config;
3239 l2_bridge_domain_t *bd_config;
3241 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
3242 config = vec_elt_at_index (l2im->configs, sw_if_index0);
3243 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
3245 return bd_config->bd_id;
3249 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
3253 u32 bd = lisp_get_bd_from_buffer_eth (b);
3255 vnip = hash_get (lcm->vni_by_bd_id, bd);
3259 clib_warning ("bridge domain %d is not mapped to any vni!", bd);
3265 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3266 gid_address_t * src, gid_address_t * dst,
3269 ethernet_header_t *eh;
3271 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3273 clib_memset (src, 0, sizeof (*src));
3274 clib_memset (dst, 0, sizeof (*dst));
3276 gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
3277 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3279 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
3282 u8 version, preflen;
3284 gid_address_type (src) = GID_ADDR_IP_PREFIX;
3285 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
3287 ip = vlib_buffer_get_current (b);
3288 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
3290 version = gid_address_ip_version (src);
3291 preflen = ip_address_max_len (version);
3292 gid_address_ippref_len (src) = preflen;
3293 gid_address_ippref_len (dst) = preflen;
3295 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
3296 gid_address_vni (dst) = vni;
3297 gid_address_vni (src) = vni;
3299 else if (LISP_AFI_MAC == type)
3301 ethernet_arp_header_t *ah;
3303 eh = vlib_buffer_get_current (b);
3305 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
3307 ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
3308 gid_address_type (dst) = GID_ADDR_ARP;
3310 if (clib_net_to_host_u16 (ah->opcode)
3311 != ETHERNET_ARP_OPCODE_request)
3313 clib_memset (&gid_address_arp_ndp_ip (dst), 0,
3314 sizeof (ip_address_t));
3315 ip_addr_version (&gid_address_arp_ndp_ip (dst)) = AF_IP4;
3316 gid_address_arp_ndp_bd (dst) = ~0;
3320 gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
3321 clib_memcpy (&gid_address_arp_ip4 (dst),
3322 &ah->ip4_over_ethernet[1].ip4, 4);
3326 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
3329 ip = (ip6_header_t *) (eh + 1);
3331 if (IP_PROTOCOL_ICMP6 == ip->protocol)
3333 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3334 ndh = ip6_next_header (ip);
3335 if (ndh->icmp.type == ICMP6_neighbor_solicitation)
3337 gid_address_type (dst) = GID_ADDR_NDP;
3339 /* check that source link layer address option is present */
3340 opt = (void *) (ndh + 1);
3341 if ((opt->header.type !=
3342 ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
3343 || (opt->header.n_data_u64s != 1))
3345 clib_memset (&gid_address_arp_ndp_ip (dst), 0,
3346 sizeof (ip_address_t));
3347 ip_addr_version (&gid_address_arp_ndp_ip (dst)) =
3349 gid_address_arp_ndp_bd (dst) = ~0;
3350 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3354 gid_address_ndp_bd (dst) =
3355 lisp_get_bd_from_buffer_eth (b);
3356 ip_address_set (&gid_address_arp_ndp_ip (dst),
3357 &ndh->target_address, AF_IP6);
3363 gid_address_type (src) = GID_ADDR_MAC;
3364 gid_address_type (dst) = GID_ADDR_MAC;
3365 mac_copy (&gid_address_mac (src), eh->src_address);
3366 mac_copy (&gid_address_mac (dst), eh->dst_address);
3369 vni = lisp_get_vni_from_buffer_eth (lcm, b);
3371 gid_address_vni (dst) = vni;
3372 gid_address_vni (src) = vni;
3375 else if (LISP_AFI_LCAF == type)
3378 eh = vlib_buffer_get_current (b);
3380 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
3382 nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
3383 u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
3384 u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
3385 gid_address_nsh_spi (dst) = spi;
3386 gid_address_nsh_si (dst) = si;
3388 gid_address_type (dst) = GID_ADDR_NSH;
3389 gid_address_type (src) = GID_ADDR_NSH;
3395 lisp_cp_lookup_inline (vlib_main_t * vm,
3396 vlib_node_runtime_t * node,
3397 vlib_frame_t * from_frame, int overlay)
3399 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3400 u32 *from, *to_next, di, si;
3401 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3403 uword n_left_from, n_left_to_next;
3404 vnet_main_t *vnm = vnet_get_main ();
3406 from = vlib_frame_vector_args (from_frame);
3407 n_left_from = from_frame->n_vectors;
3408 next_index = node->cached_next_index;
3410 while (n_left_from > 0)
3412 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
3414 while (n_left_from > 0 && n_left_to_next > 0)
3416 u32 pi0, sw_if_index0, next0;
3419 gid_address_t src, dst;
3420 ethernet_arp_header_t *arp0;
3421 ethernet_header_t *eth0;
3422 vnet_hw_interface_t *hw_if0;
3423 ethernet_header_t *eh0;
3424 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3432 n_left_to_next -= 1;
3434 b0 = vlib_get_buffer (vm, pi0);
3436 /* src/dst eid pair */
3437 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
3439 if (gid_address_type (&dst) == GID_ADDR_ARP)
3441 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3442 if (GID_LOOKUP_MISS_L2 == mac0)
3445 /* send ARP reply */
3446 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3447 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3449 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3451 eth0 = vlib_buffer_get_current (b0);
3452 arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
3454 arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
3455 arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
3456 mac_address_from_u64 (&arp0->ip4_over_ethernet[0].mac, mac0);
3457 clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
3458 &gid_address_arp_ip4 (&dst), 4);
3460 /* Hardware must be ethernet-like. */
3461 ASSERT (vec_len (hw_if0->hw_address) == 6);
3463 clib_memcpy (eth0->dst_address, eth0->src_address, 6);
3464 clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
3466 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
3467 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3470 else if (gid_address_type (&dst) == GID_ADDR_NDP)
3472 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3473 if (GID_LOOKUP_MISS_L2 == mac0)
3476 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3477 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3479 eh0 = vlib_buffer_get_current (b0);
3480 ip0 = (ip6_header_t *) (eh0 + 1);
3481 ndh = ip6_next_header (ip0);
3483 ip0->dst_address = ip0->src_address;
3484 ip0->src_address = ndh->target_address;
3485 ip0->hop_limit = 255;
3486 opt = (void *) (ndh + 1);
3488 ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
3489 clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
3490 ndh->icmp.type = ICMP6_neighbor_advertisement;
3491 ndh->advertisement_flags = clib_host_to_net_u32
3492 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
3493 ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
3494 ndh->icmp.checksum = 0;
3495 ndh->icmp.checksum =
3496 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
3498 clib_memcpy (eh0->dst_address, eh0->src_address, 6);
3499 clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
3502 [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
3503 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3507 /* if we have remote mapping for destination already in map-cache
3508 add forwarding tunnel directly. If not send a map-request */
3509 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
3513 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
3514 /* send a map-request also in case of negative mapping entry
3515 with corresponding action */
3516 if (m->action == LISP_SEND_MAP_REQUEST)
3518 /* send map-request */
3519 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3520 0 /* is_resend */ );
3524 if (GID_ADDR_NSH != gid_address_type (&dst))
3526 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
3530 si = lcm->nsh_map_index;
3534 dp_add_fwd_entry_from_mt (si, di);
3540 /* send map-request */
3541 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3542 0 /* is_resend */ );
3546 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
3547 next0 = LISP_CP_LOOKUP_NEXT_DROP;
3549 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3551 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
3554 clib_memset (tr, 0, sizeof (*tr));
3555 if ((gid_address_type (&dst) == GID_ADDR_NDP) ||
3556 (gid_address_type (&dst) == GID_ADDR_ARP))
3557 clib_memcpy (&tr->dst_eid, &dst, sizeof (gid_address_t));
3559 gid_address_copy (&tr->dst_eid, &dst);
3560 ip_address_copy (&tr->map_resolver_ip,
3561 &lcm->active_map_resolver);
3563 gid_address_free (&dst);
3564 gid_address_free (&src);
3565 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3567 n_left_to_next, pi0, next0);
3570 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
3572 return from_frame->n_vectors;
3576 lisp_cp_lookup_ip4 (vlib_main_t * vm,
3577 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3579 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
3583 lisp_cp_lookup_ip6 (vlib_main_t * vm,
3584 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3586 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
3590 lisp_cp_lookup_l2 (vlib_main_t * vm,
3591 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3593 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
3597 lisp_cp_lookup_nsh (vlib_main_t * vm,
3598 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3600 /* TODO decide if NSH should be propagated as LCAF or not */
3601 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
3605 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
3606 .function = lisp_cp_lookup_ip4,
3607 .name = "lisp-cp-lookup-ip4",
3608 .vector_size = sizeof (u32),
3609 .format_trace = format_lisp_cp_lookup_trace,
3610 .type = VLIB_NODE_TYPE_INTERNAL,
3612 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3613 .error_strings = lisp_cp_lookup_error_strings,
3615 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3618 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3619 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3625 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
3626 .function = lisp_cp_lookup_ip6,
3627 .name = "lisp-cp-lookup-ip6",
3628 .vector_size = sizeof (u32),
3629 .format_trace = format_lisp_cp_lookup_trace,
3630 .type = VLIB_NODE_TYPE_INTERNAL,
3632 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3633 .error_strings = lisp_cp_lookup_error_strings,
3635 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3638 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3639 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3645 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
3646 .function = lisp_cp_lookup_l2,
3647 .name = "lisp-cp-lookup-l2",
3648 .vector_size = sizeof (u32),
3649 .format_trace = format_lisp_cp_lookup_trace,
3650 .type = VLIB_NODE_TYPE_INTERNAL,
3652 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3653 .error_strings = lisp_cp_lookup_error_strings,
3655 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3658 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3659 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3665 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
3666 .function = lisp_cp_lookup_nsh,
3667 .name = "lisp-cp-lookup-nsh",
3668 .vector_size = sizeof (u32),
3669 .format_trace = format_lisp_cp_lookup_trace,
3670 .type = VLIB_NODE_TYPE_INTERNAL,
3672 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3673 .error_strings = lisp_cp_lookup_error_strings,
3675 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3678 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3679 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3684 /* lisp_cp_input statistics */
3685 #define foreach_lisp_cp_input_error \
3687 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
3688 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
3689 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
3690 _(MAP_REPLIES_RECEIVED, "map-replies received")
3692 static char *lisp_cp_input_error_strings[] = {
3693 #define _(sym,string) string,
3694 foreach_lisp_cp_input_error
3700 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
3701 foreach_lisp_cp_input_error
3703 LISP_CP_INPUT_N_ERROR,
3704 } lisp_cp_input_error_t;
3708 gid_address_t dst_eid;
3709 ip4_address_t map_resolver_ip;
3710 } lisp_cp_input_trace_t;
3713 format_lisp_cp_input_trace (u8 * s, va_list * args)
3715 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
3716 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
3717 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
3718 va_arg (*args, lisp_cp_input_trace_t *);
3720 s = format (s, "LISP-CP-INPUT: TODO");
3725 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3728 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3729 clib_memset (adj_args, 0, sizeof (adj_args[0]));
3731 m = pool_elt_at_index (lcm->mapping_pool, mi);
3733 gid_address_copy (&adj_args->reid, &m->eid);
3734 adj_args->is_add = 0;
3735 if (vnet_lisp_add_del_adjacency (adj_args))
3736 clib_warning ("failed to del adjacency!");
3738 TW (tw_timer_stop) (&lcm->wheel, m->timer_handle);
3739 vnet_lisp_del_mapping (&m->eid, NULL);
3743 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
3744 f64 expiration_time)
3747 u64 now = clib_cpu_time_now ();
3748 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
3749 u64 exp_clock_time = now + expiration_time * cpu_cps;
3751 m = pool_elt_at_index (lcm->mapping_pool, mi);
3754 m->timer_handle = TW (tw_timer_start) (&lcm->wheel, mi, 0, exp_clock_time);
3758 process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3761 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
3762 mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
3768 if (m->delete_after_expiration)
3770 remove_expired_mapping (lcm, mi);
3774 fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
3778 fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
3780 clib_memset (a, 0, sizeof (*a));
3781 a->rmt_eid = fe->reid;
3783 a->lcl_eid = fe->leid;
3784 a->vni = gid_address_vni (&fe->reid);
3786 rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
3790 if (m->almost_expired)
3792 m->almost_expired = 0; /* reset flag */
3795 if (m->packets != c.packets)
3797 /* mapping is in use, re-fetch */
3798 map_request_args_t mr_args;
3799 clib_memset (&mr_args, 0, sizeof (mr_args));
3800 mr_args.seid = fe->leid;
3801 mr_args.deid = fe->reid;
3803 send_map_request_thread_fn (&mr_args);
3806 remove_expired_mapping (lcm, mi);
3809 remove_expired_mapping (lcm, mi);
3813 m->almost_expired = 1;
3814 mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
3818 m->packets = c.packets;
3820 m->delete_after_expiration = 1;
3825 map_records_arg_free (map_records_arg_t * a)
3827 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3829 vec_foreach (m, a->mappings)
3831 vec_free (m->locators);
3832 gid_address_free (&m->eid);
3834 pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
3838 process_map_reply (map_records_arg_t * a)
3841 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3842 u32 dst_map_index = 0;
3843 pending_map_request_t *pmr;
3848 if (a->is_rloc_probe)
3851 /* Check pending requests table and nonce */
3852 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3855 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3858 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3860 vec_foreach (m, a->mappings)
3862 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
3863 clib_memset (m_args, 0, sizeof (m_args[0]));
3864 gid_address_copy (&m_args->eid, &m->eid);
3865 m_args->action = m->action;
3866 m_args->authoritative = m->authoritative;
3867 m_args->ttl = m->ttl;
3868 m_args->is_static = 0;
3870 /* insert/update mappings cache */
3871 vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
3873 if (dst_map_index == (u32) ~ 0)
3878 /* try to program forwarding only if mapping saved or updated */
3879 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3880 clib_memset (adj_args, 0, sizeof (adj_args[0]));
3882 gid_address_copy (&adj_args->leid, &pmr->src);
3883 gid_address_copy (&adj_args->reid, &m->eid);
3884 adj_args->is_add = 1;
3886 if (vnet_lisp_add_del_adjacency (adj_args))
3887 clib_warning ("failed to add adjacency!");
3890 if ((u32) ~ 0 != m->ttl)
3891 mapping_start_expiration_timer (lcm, dst_map_index,
3892 (m->ttl == 0) ? 0 : MAPPING_TIMEOUT);
3895 /* remove pending map request entry */
3898 clib_fifo_foreach (noncep, pmr->nonces, ({
3899 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3903 clib_fifo_free (pmr->nonces);
3904 pool_put (lcm->pending_map_requests_pool, pmr);
3912 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3913 lisp_key_type_t key_id, u8 * key)
3915 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3919 vnet_crypto_op_t _op, *op = &_op;
3920 vnet_crypto_key_index_t ki;
3921 u8 out[EVP_MAX_MD_SIZE] = { 0, };
3923 auth_data_len = auth_data_len_by_key_id (key_id);
3924 if ((u16) ~ 0 == auth_data_len)
3926 clib_warning ("invalid length for key_id %d!", key_id);
3930 /* save auth data */
3931 vec_validate (auth_data, auth_data_len - 1);
3932 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3934 /* clear auth data */
3935 clib_memset (MNOTIFY_DATA (h), 0, auth_data_len);
3937 vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id));
3944 ki = vnet_crypto_key_add (lcm->vlib_main,
3945 lisp_key_type_to_crypto_alg (key_id), key,
3950 vnet_crypto_process_ops (lcm->vlib_main, op, 1);
3951 vnet_crypto_key_del (lcm->vlib_main, ki);
3953 result = memcmp (out, auth_data, auth_data_len);
3955 vec_free (auth_data);
3961 process_map_notify (map_records_arg_t * a)
3963 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3966 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3969 clib_warning ("No pending map-register entry with nonce %lu!",
3975 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
3976 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3978 /* reset map-notify counter */
3979 lcm->expired_map_registers = 0;
3983 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3987 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3990 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3994 return pool_elt_at_index (lcm->mapping_pool, mi);
3998 * When map-notify is received it is necessary that all EIDs in the record
3999 * list share common key. The key is then used to verify authentication
4000 * data in map-notify message.
4003 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
4004 u32 key_id, u8 ** key_out)
4006 u32 i, len = vec_len (maps);
4009 /* get key of the first mapping */
4010 m = get_mapping (lcm, &maps[0].eid);
4014 key_out[0] = m->key;
4016 for (i = 1; i < len; i++)
4018 m = get_mapping (lcm, &maps[i].eid);
4022 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
4024 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
4032 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
4034 locator_t *locators = 0;
4040 clib_memset (&m, 0, sizeof (m));
4042 /* parse record eid */
4043 for (i = 0; i < count; i++)
4046 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
4049 clib_warning ("Failed to parse mapping record!");
4050 vec_foreach (loc, locators) locator_free (loc);
4051 vec_free (locators);
4055 m.locators = locators;
4056 gid_address_copy (&m.eid, &deid);
4057 vec_add1 (a->mappings, m);
4063 static map_records_arg_t *
4064 map_record_args_get ()
4066 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4067 map_records_arg_t *rec;
4071 pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
4073 map_records_arg_free (rec);
4077 pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
4081 static map_records_arg_t *
4082 parse_map_notify (vlib_buffer_t * b)
4085 map_notify_hdr_t *mnotif_hdr;
4086 lisp_key_type_t key_id;
4087 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4090 u16 auth_data_len = 0;
4092 map_records_arg_t *a;
4094 a = map_record_args_get ();
4095 clib_memset (a, 0, sizeof (*a));
4096 mnotif_hdr = vlib_buffer_get_current (b);
4097 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
4098 clib_memset (&deid, 0, sizeof (deid));
4100 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
4101 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
4102 auth_data_len = auth_data_len_by_key_id (key_id);
4104 /* advance buffer by authentication data */
4105 vlib_buffer_pull (b, auth_data_len);
4107 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
4108 rc = parse_map_records (b, a, record_count);
4111 map_records_arg_free (a);
4115 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
4118 map_records_arg_free (a);
4122 /* verify authentication data */
4123 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
4124 - (u8 *) mnotif_hdr, key_id, key))
4126 clib_warning ("Map-notify auth data verification failed for nonce "
4127 "0x%lx!", a->nonce);
4128 map_records_arg_free (a);
4134 static vlib_buffer_t *
4135 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
4136 ip_address_t * dst, u64 nonce, u8 probe_bit,
4137 mapping_t * records, u16 dst_port, u32 * bi_res)
4141 vlib_main_t *vm = lcm->vlib_main;
4143 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
4145 clib_warning ("Can't allocate buffer for Map-Register!");
4149 b = vlib_get_buffer (vm, bi);
4151 /* leave some space for the encap headers */
4152 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
4154 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
4156 /* push outer ip header */
4157 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
4164 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
4165 u8 probe_bit, u64 nonce, u16 dst_port,
4166 ip_address_t * probed_loc)
4172 u32 next_index, *to_next;
4173 mapping_t *records = 0, *m;
4175 m = pool_elt_at_index (lcm->mapping_pool, mi);
4179 vec_add1 (records, m[0]);
4180 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
4181 clib_memset (&src, 0, sizeof (src));
4183 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
4185 clib_warning ("can't find interface address for %U", format_ip_address,
4190 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
4194 free_map_register_records (records);
4196 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
4197 next_index = (ip_addr_version (&lcm->active_map_resolver) == AF_IP4) ?
4198 ip4_lookup_node.index : ip6_lookup_node.index;
4200 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
4202 /* Enqueue the packet */
4203 to_next = vlib_frame_vector_args (f);
4206 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
4211 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
4213 const i32 start = vnet_buffer (b)->l3_hdr_offset;
4214 if (start < 0 && start < -sizeof (b->pre_data))
4220 *ip_hdr = b->data + start;
4221 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
4226 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
4227 lisp_cp_main_t * lcm, vlib_buffer_t * b)
4230 ip_address_t *dst_loc = 0, probed_loc, src_loc;
4232 map_request_hdr_t *mreq_hdr;
4233 gid_address_t src, dst;
4235 u32 i, len = 0, rloc_probe_recv = 0;
4236 gid_address_t *itr_rlocs = 0;
4238 mreq_hdr = vlib_buffer_get_current (b);
4239 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
4242 ("Only SMR Map-Requests and RLOC probe supported for now!");
4246 vlib_buffer_pull (b, sizeof (*mreq_hdr));
4247 nonce = MREQ_NONCE (mreq_hdr);
4250 len = lisp_msg_parse_addr (b, &src);
4254 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
4255 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
4259 /* parse eid records and send SMR-invoked map-requests */
4260 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
4262 clib_memset (&dst, 0, sizeof (dst));
4263 len = lisp_msg_parse_eid_rec (b, &dst);
4266 clib_warning ("Can't parse map-request EID-record");
4270 if (MREQ_SMR (mreq_hdr))
4272 /* send SMR-invoked map-requests */
4273 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
4275 else if (MREQ_RLOC_PROBE (mreq_hdr))
4277 find_ip_header (b, &ip_hdr);
4280 clib_warning ("Cannot find the IP header!");
4284 clib_memset (&m, 0, sizeof (m));
4285 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
4287 // TODO: select best locator; for now use the first one
4288 dst_loc = &gid_address_ip (&itr_rlocs[0]);
4290 /* get src/dst IP addresses */
4291 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
4293 // TODO get source port from buffer
4294 u16 src_port = LISP_CONTROL_PORT;
4296 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
4297 src_port, &probed_loc);
4302 vlib_node_increment_counter (vm, node->node_index,
4303 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
4305 vec_free (itr_rlocs);
4309 parse_map_reply (vlib_buffer_t * b)
4316 map_reply_hdr_t *mrep_hdr;
4317 map_records_arg_t *a;
4319 a = map_record_args_get ();
4320 clib_memset (a, 0, sizeof (*a));
4322 locator_t *locators;
4324 mrep_hdr = vlib_buffer_get_current (b);
4325 a->nonce = MREP_NONCE (mrep_hdr);
4326 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
4327 if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
4329 map_records_arg_free (a);
4332 vlib_buffer_pull (b, sizeof (*mrep_hdr));
4334 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
4336 clib_memset (&m, 0, sizeof (m));
4338 h = vlib_buffer_get_current (b);
4340 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
4341 m.action = MAP_REC_ACTION (h);
4342 m.authoritative = MAP_REC_AUTH (h);
4344 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
4347 clib_warning ("Failed to parse mapping record!");
4348 map_records_arg_free (a);
4352 m.locators = locators;
4353 gid_address_copy (&m.eid, &deid);
4354 vec_add1 (a->mappings, m);
4360 queue_map_reply_for_processing (map_records_arg_t * a)
4362 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
4366 queue_map_notify_for_processing (map_records_arg_t * a)
4368 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
4372 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
4373 vlib_frame_t * from_frame)
4375 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
4376 map_notifies_recv = 0;
4377 lisp_msg_type_e type;
4378 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4379 map_records_arg_t *a;
4381 from = vlib_frame_vector_args (from_frame);
4382 n_left_from = from_frame->n_vectors;
4385 while (n_left_from > 0)
4387 u32 n_left_to_next_drop;
4389 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4390 to_next_drop, n_left_to_next_drop);
4391 while (n_left_from > 0 && n_left_to_next_drop > 0)
4399 to_next_drop[0] = bi0;
4401 n_left_to_next_drop -= 1;
4403 b0 = vlib_get_buffer (vm, bi0);
4405 type = lisp_msg_type (vlib_buffer_get_current (b0));
4408 case LISP_MAP_REPLY:
4409 a = parse_map_reply (b0);
4412 if (a->is_rloc_probe)
4413 rloc_probe_rep_recv++;
4414 queue_map_reply_for_processing (a);
4417 case LISP_MAP_REQUEST:
4418 process_map_request (vm, node, lcm, b0);
4420 case LISP_MAP_NOTIFY:
4421 a = parse_map_notify (b0);
4424 map_notifies_recv++;
4425 queue_map_notify_for_processing (a);
4429 clib_warning ("Unsupported LISP message type %d", type);
4433 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
4435 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
4441 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4442 n_left_to_next_drop);
4444 vlib_node_increment_counter (vm, node->node_index,
4445 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
4446 rloc_probe_rep_recv);
4447 vlib_node_increment_counter (vm, node->node_index,
4448 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
4450 return from_frame->n_vectors;
4454 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
4455 .function = lisp_cp_input,
4456 .name = "lisp-cp-input",
4457 .vector_size = sizeof (u32),
4458 .format_trace = format_lisp_cp_input_trace,
4459 .type = VLIB_NODE_TYPE_INTERNAL,
4461 .n_errors = LISP_CP_INPUT_N_ERROR,
4462 .error_strings = lisp_cp_input_error_strings,
4464 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
4467 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
4473 lisp_cp_init (vlib_main_t * vm)
4475 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4476 clib_error_t *error = 0;
4477 vlib_thread_main_t *vtm = vlib_get_thread_main ();
4480 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
4483 lcm->im4 = &ip4_main;
4484 lcm->im6 = &ip6_main;
4485 lcm->vlib_main = vm;
4486 lcm->vnet_main = vnet_get_main ();
4487 lcm->mreq_itr_rlocs = ~0;
4489 lcm->pitr_map_index = ~0;
4490 lcm->petr_map_index = ~0;
4491 clib_memset (&lcm->active_map_resolver, 0,
4492 sizeof (lcm->active_map_resolver));
4493 clib_memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
4495 gid_dictionary_init (&lcm->mapping_index_by_gid);
4496 lcm->do_map_resolver_election = 1;
4497 lcm->do_map_server_election = 1;
4498 lcm->map_request_mode = MR_MODE_DST_ONLY;
4500 num_threads = 1 /* main thread */ + vtm->n_threads;
4501 vec_validate (lcm->map_records_args_pool, num_threads - 1);
4503 /* default vrf mapped to vni 0 */
4504 hash_set (lcm->table_id_by_vni, 0, 0);
4505 hash_set (lcm->vni_by_table_id, 0, 0);
4507 TW (tw_timer_wheel_init) (&lcm->wheel, 0 /* no callback */ ,
4508 1e-3 /* timer period 1ms */ ,
4509 ~0 /* max expirations per call */ );
4510 lcm->nsh_map_index = ~0;
4511 lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
4512 lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
4513 lcm->expired_map_registers = 0;
4514 lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
4515 lcm->flags |= LISP_FLAG_XTR_MODE;
4520 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
4521 lisp_api_stats_t * stat, lisp_stats_key_t * key,
4525 vlib_combined_counter_main_t *cm = &lgm->counters;
4526 lisp_gpe_fwd_entry_key_t fwd_key;
4527 const lisp_gpe_tunnel_t *lgt;
4530 clib_memset (stat, 0, sizeof (*stat));
4531 clib_memset (&fwd_key, 0, sizeof (fwd_key));
4533 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
4536 gid_to_dp_address (&fe->reid, &stat->deid);
4537 gid_to_dp_address (&fe->leid, &stat->seid);
4538 stat->vni = gid_address_vni (&fe->reid);
4540 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
4541 stat->loc_rloc = lgt->key->lcl;
4542 stat->rmt_rloc = lgt->key->rmt;
4544 vlib_get_combined_counter (cm, stats_index, &v);
4550 vnet_lisp_get_stats (void)
4552 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
4553 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4554 lisp_api_stats_t *stats = 0, stat;
4555 lisp_stats_key_t *key;
4559 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
4561 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
4562 vec_add1 (stats, stat);
4570 send_map_request_thread_fn (void *arg)
4572 map_request_args_t *a = arg;
4573 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4576 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4578 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4584 queue_map_request (gid_address_t * seid, gid_address_t * deid,
4585 u8 smr_invoked, u8 is_resend)
4587 map_request_args_t a;
4589 a.is_resend = is_resend;
4590 gid_address_copy (&a.seid, seid);
4591 gid_address_copy (&a.deid, deid);
4592 a.smr_invoked = smr_invoked;
4594 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
4595 (u8 *) & a, sizeof (a));
4600 * Take an action with a pending map request depending on expiration time
4601 * and re-try counters.
4604 update_pending_request (pending_map_request_t * r, f64 dt)
4606 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4609 if (r->time_to_expire - dt < 0)
4610 /* it's time to decide what to do with this pending request */
4612 if (r->retries_num >= NUMBER_OF_RETRIES)
4613 /* too many retries -> assume current map resolver is not available */
4615 mr = get_map_resolver (&lcm->active_map_resolver);
4618 clib_warning ("Map resolver %U not found - probably deleted "
4619 "by the user recently.", format_ip_address,
4620 &lcm->active_map_resolver);
4624 clib_warning ("map resolver %U is unreachable, ignoring",
4625 format_ip_address, &lcm->active_map_resolver);
4627 /* mark current map resolver unavailable so it won't be
4628 * selected next time */
4630 mr->last_update = vlib_time_now (lcm->vlib_main);
4633 reset_pending_mr_counters (r);
4634 elect_map_resolver (lcm);
4636 /* try to find a next eligible map resolver and re-send */
4637 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4643 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4646 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
4650 r->time_to_expire -= dt;
4654 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
4657 pending_map_request_t *pmr;
4658 u32 *to_be_removed = 0, *pmr_index;
4661 pool_foreach (pmr, lcm->pending_map_requests_pool,
4663 if (pmr->to_be_removed)
4665 clib_fifo_foreach (nonce, pmr->nonces, ({
4666 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
4669 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
4674 vec_foreach (pmr_index, to_be_removed)
4675 pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
4677 vec_free (to_be_removed);
4681 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
4683 static f64 time_left = RLOC_PROBING_INTERVAL;
4685 if (!lcm->is_enabled || !lcm->rloc_probing)
4691 time_left = RLOC_PROBING_INTERVAL;
4692 send_rloc_probes (lcm);
4697 update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
4699 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4703 r->time_to_expire -= dt;
4705 if (r->time_to_expire < 0)
4707 lcm->expired_map_registers++;
4709 if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
4711 ms = get_map_server (&lcm->active_map_server);
4714 clib_warning ("Map server %U not found - probably deleted "
4715 "by the user recently.", format_ip_address,
4716 &lcm->active_map_server);
4720 clib_warning ("map server %U is unreachable, ignoring",
4721 format_ip_address, &lcm->active_map_server);
4723 /* mark current map server unavailable so it won't be
4724 * elected next time */
4726 ms->last_update = vlib_time_now (lcm->vlib_main);
4729 elect_map_server (lcm);
4731 /* indication for deleting all pending map registers */
4733 lcm->expired_map_registers = 0;
4738 /* delete pending map register */
4746 update_map_register (lisp_cp_main_t * lcm, f64 dt)
4748 u32 *to_be_removed = 0, *pmr_index;
4749 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
4750 static u64 mreg_sent_counter = 0;
4752 pending_map_register_t *pmr;
4755 if (!lcm->is_enabled || !lcm->map_registering)
4759 pool_foreach (pmr, lcm->pending_map_registers_pool,
4761 if (!update_pending_map_register (pmr, dt, &del_all))
4765 vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
4772 /* delete all pending map register messages so they won't
4773 * trigger another map server election.. */
4774 pool_free (lcm->pending_map_registers_pool);
4775 hash_free (lcm->map_register_messages_by_nonce);
4777 /* ..and trigger registration against next map server (if any) */
4782 vec_foreach (pmr_index, to_be_removed)
4783 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4786 vec_free (to_be_removed);
4791 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
4792 time_left = MAP_REGISTER_INTERVAL;
4795 mreg_sent_counter++;
4796 time_left = QUICK_MAP_REGISTER_INTERVAL;
4798 send_map_register (lcm, 1 /* want map notify */ );
4803 send_map_resolver_service (vlib_main_t * vm,
4804 vlib_node_runtime_t * rt, vlib_frame_t * f)
4808 pending_map_request_t *pmr;
4809 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4813 vlib_process_wait_for_event_or_clock (vm, period);
4815 /* currently no signals are expected - just wait for clock */
4816 (void) vlib_process_get_events (vm, 0);
4819 pool_foreach (pmr, lcm->pending_map_requests_pool,
4821 if (!pmr->to_be_removed)
4822 update_pending_request (pmr, period);
4826 remove_dead_pending_map_requests (lcm);
4828 update_map_register (lcm, period);
4829 update_rloc_probing (lcm, period);
4831 expired = TW (tw_timer_expire_timers_vec) (&lcm->wheel,
4832 vlib_time_now (vm), expired);
4833 if (vec_len (expired) > 0)
4836 vec_foreach (mi, expired)
4838 process_expired_mapping (lcm, mi[0]);
4840 _vec_len (expired) = 0;
4849 vnet_lisp_stats_enable_disable (u8 enable)
4851 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4853 if (vnet_lisp_enable_disable_status () == 0)
4854 return VNET_API_ERROR_LISP_DISABLED;
4857 lcm->flags |= LISP_FLAG_STATS_ENABLED;
4859 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
4865 vnet_lisp_stats_enable_disable_state (void)
4867 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4869 if (vnet_lisp_enable_disable_status () == 0)
4870 return VNET_API_ERROR_LISP_DISABLED;
4872 return lcm->flags & LISP_FLAG_STATS_ENABLED;
4876 vnet_lisp_create_retry_process (lisp_cp_main_t * lcm)
4878 if (lcm->retry_service_index)
4881 lcm->retry_service_index = vlib_process_create (vlib_get_main (),
4882 "lisp-retry-service",
4883 send_map_resolver_service,
4884 16 /* stack_bytes */ );
4888 vnet_lisp_set_transport_protocol (u8 protocol)
4890 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4892 if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
4893 protocol > LISP_TRANSPORT_PROTOCOL_API)
4894 return VNET_API_ERROR_INVALID_ARGUMENT;
4896 lcm->transport_protocol = protocol;
4900 lisp_transport_protocol_t
4901 vnet_lisp_get_transport_protocol (void)
4903 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4904 return lcm->transport_protocol;
4908 vnet_lisp_enable_disable_xtr_mode (u8 is_enabled)
4910 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4911 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
4912 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4913 u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
4915 if (pitr_mode && is_enabled)
4916 return VNET_API_ERROR_INVALID_ARGUMENT;
4918 if (is_enabled && xtr_mode)
4920 if (!is_enabled && !xtr_mode)
4927 lisp_cp_register_dst_port (lcm->vlib_main);
4929 lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
4930 lcm->flags |= LISP_FLAG_XTR_MODE;
4936 lisp_cp_unregister_dst_port (lcm->vlib_main);
4938 lisp_cp_disable_l2_l3_ifaces (lcm);
4939 lcm->flags &= ~LISP_FLAG_XTR_MODE;
4945 vnet_lisp_enable_disable_pitr_mode (u8 is_enabled)
4947 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4948 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4949 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
4951 if (xtr_mode && is_enabled)
4952 return VNET_API_ERROR_INVALID_VALUE;
4954 if (is_enabled && pitr_mode)
4956 if (!is_enabled && !pitr_mode)
4961 /* create iface, no default route */
4962 lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
4963 lcm->flags |= LISP_FLAG_PITR_MODE;
4967 lisp_cp_disable_l2_l3_ifaces (lcm);
4968 lcm->flags &= ~LISP_FLAG_PITR_MODE;
4974 vnet_lisp_enable_disable_petr_mode (u8 is_enabled)
4976 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4977 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4978 u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
4980 if (is_enabled && petr_mode)
4982 if (!is_enabled && !petr_mode)
4989 lisp_cp_register_dst_port (lcm->vlib_main);
4991 lcm->flags |= LISP_FLAG_PETR_MODE;
4997 lisp_cp_unregister_dst_port (lcm->vlib_main);
4999 lcm->flags &= ~LISP_FLAG_PETR_MODE;
5005 vnet_lisp_get_xtr_mode (void)
5007 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5008 return (lcm->flags & LISP_FLAG_XTR_MODE);
5012 vnet_lisp_get_pitr_mode (void)
5014 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5015 return (lcm->flags & LISP_FLAG_PITR_MODE);
5019 vnet_lisp_get_petr_mode (void)
5021 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5022 return (lcm->flags & LISP_FLAG_PETR_MODE);
5025 VLIB_INIT_FUNCTION (lisp_cp_init);
5028 * fd.io coding-style-patch-verification: ON
5031 * eval: (c-set-style "gnu")