2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vlibmemory/api.h>
17 #include <vnet/lisp-cp/control.h>
18 #include <vnet/lisp-cp/packets.h>
19 #include <vnet/lisp-cp/lisp_msg_serdes.h>
20 #include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h>
21 #include <vnet/lisp-gpe/lisp_gpe_tenant.h>
22 #include <vnet/lisp-gpe/lisp_gpe_tunnel.h>
23 #include <vnet/fib/fib_entry.h>
24 #include <vnet/fib/fib_table.h>
25 #include <vnet/ethernet/arp_packet.h>
26 #include <vnet/ethernet/packet.h>
28 #include <openssl/evp.h>
29 #include <openssl/hmac.h>
31 #define MAX_VALUE_U24 0xffffff
33 /* mapping timer control constants (in seconds) */
34 #define TIME_UNTIL_REFETCH_OR_DELETE 20
35 #define MAPPING_TIMEOUT (((m->ttl) * 60) - TIME_UNTIL_REFETCH_OR_DELETE)
37 lisp_cp_main_t lisp_control_main;
39 u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
40 static void *send_map_request_thread_fn (void *arg);
44 LISP_CP_INPUT_NEXT_DROP,
46 } lisp_cp_input_next_t;
57 vnet_lisp_get_map_request_mode (void)
59 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
60 return lcm->map_request_mode;
64 auth_data_len_by_key_id (lisp_key_type_t key_id)
69 return SHA1_AUTH_DATA_LEN;
70 case HMAC_SHA_256_128:
71 return SHA256_AUTH_DATA_LEN;
73 clib_warning ("unsupported key type: %d!", key_id);
80 get_encrypt_fcn (lisp_key_type_t key_id)
86 case HMAC_SHA_256_128:
89 clib_warning ("unsupported encryption key type: %d!", key_id);
96 queue_map_request (gid_address_t * seid, gid_address_t * deid,
97 u8 smr_invoked, u8 is_resend);
99 ip_interface_address_t *
100 ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
101 u32 sw_if_index, u8 loop)
103 vnet_main_t *vnm = vnet_get_main ();
104 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
105 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
106 sw_if_index = swif->unnumbered_sw_if_index;
108 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
109 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
111 return pool_elt_at_index ((lm)->if_address_pool, ia);
115 ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
118 ip_interface_address_t *ia;
120 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
123 return ip_interface_address_get_address (lm, ia);
127 ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
128 u8 version, ip_address_t * result)
130 ip_lookup_main_t *lm;
133 lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
134 addr = ip_interface_get_first_address (lm, sw_if_index, version);
138 ip_address_set (result, addr, version);
143 * convert from a LISP address to a FIB prefix
146 ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
148 if (addr->version == IP4)
151 prefix->fp_proto = FIB_PROTOCOL_IP4;
152 memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
153 memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
157 prefix->fp_len = 128;
158 prefix->fp_proto = FIB_PROTOCOL_IP6;
159 memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
164 * convert from a LISP to a FIB prefix
167 ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
168 fib_prefix_t * fib_prefix)
170 ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
171 fib_prefix->fp_len = ip_prefix->len;
175 * Find the sw_if_index of the interface that would be used to egress towards
179 ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
181 fib_node_index_t fei;
184 ip_address_to_fib_prefix (dst, &prefix);
186 fei = fib_table_lookup (0, &prefix);
188 return (fib_entry_get_resolving_interface (fei));
192 * Find first IP of the interface that would be used to egress towards dst.
193 * Returns 1 if the address is found 0 otherwise.
196 ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
197 ip_address_t * result)
200 ip_lookup_main_t *lm;
204 ASSERT (result != 0);
206 ipver = ip_addr_version (dst);
208 lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
209 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
214 /* find the first ip address */
215 addr = ip_interface_get_first_address (lm, si, ipver);
219 ip_address_set (result, addr, ipver);
224 dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add)
230 dp_table = hash_get (lcm->table_id_by_vni, vni);
234 clib_warning ("vni %d not associated to a vrf!", vni);
235 return VNET_API_ERROR_INVALID_VALUE;
240 dp_table = hash_get (lcm->bd_id_by_vni, vni);
243 clib_warning ("vni %d not associated to a bridge domain!", vni);
244 return VNET_API_ERROR_INVALID_VALUE;
248 /* enable/disable data-plane interface */
252 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
254 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0]);
259 lisp_gpe_tenant_l2_iface_unlock (vni);
261 lisp_gpe_tenant_l3_iface_unlock (vni);
268 dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 dst_map_index)
270 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
273 memset (a, 0, sizeof (*a));
275 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
279 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
281 /* delete dp fwd entry */
284 a->locator_pairs = fe->locator_pairs;
285 a->vni = gid_address_vni (&fe->reid);
286 gid_address_copy (&a->rmt_eid, &fe->reid);
288 gid_address_copy (&a->lcl_eid, &fe->leid);
290 vnet_lisp_gpe_del_fwd_counters (a, feip[0]);
291 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
293 /* delete entry in fwd table */
294 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
295 vec_free (fe->locator_pairs);
296 pool_put (lcm->fwd_entry_pool, fe);
300 * Finds first remote locator with best (lowest) priority that has a local
301 * peer locator with an underlying route to it.
305 get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
306 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
308 u32 i, limitp = 0, li, found = 0, esi;
309 locator_set_t *rmt_ls, *lcl_ls;
310 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
311 locator_t *lp, *rmt = 0;
316 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
318 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
320 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
327 /* find unvisited remote locator with best priority */
328 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
330 if (0 != hash_get (checked, i))
333 li = vec_elt (rmt_ls->locator_indices, i);
334 lp = pool_elt_at_index (lcm->locator_pool, li);
336 /* we don't support non-IP locators for now */
337 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
340 if ((found && lp->priority == limitp)
341 || (!found && lp->priority >= limitp))
345 /* don't search for locators with lower priority and don't
346 * check this locator again*/
347 limitp = lp->priority;
348 hash_set (checked, i, 1);
352 /* check if a local locator with a route to remote locator exists */
355 /* find egress sw_if_index for rmt locator */
357 ip_fib_get_egress_iface_for_dst (lcm,
358 &gid_address_ip (&rmt->address));
359 if ((u32) ~ 0 == esi)
362 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
364 li = vec_elt (lcl_ls->locator_indices, i);
365 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
367 /* found local locator with the needed sw_if_index */
368 if (sl->sw_if_index == esi)
370 /* and it has an address */
371 if (0 == ip_interface_get_first_ip_address (lcm,
373 gid_address_ip_version
378 memset (&pair, 0, sizeof (pair));
379 ip_address_copy (&pair.rmt_loc,
380 &gid_address_ip (&rmt->address));
381 ip_address_copy (&pair.lcl_loc, lcl_addr);
382 pair.weight = rmt->weight;
383 pair.priority = rmt->priority;
384 vec_add1 (locator_pairs[0], pair);
398 gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
401 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
405 switch (fid_addr_type (fid))
407 case FID_ADDR_IP_PREF:
408 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
409 gid_address_ippref (dst) = fid_addr_ippref (fid);
412 gid_address_type (dst) = GID_ADDR_MAC;
413 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
416 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
422 vnet_lisp_map_register_state_get (void)
424 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
425 return lcm->map_registering;
429 vnet_lisp_rloc_probe_state_get (void)
431 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
432 return lcm->rloc_probing;
436 dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
438 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
439 gid_address_t *rmt_eid, *lcl_eid;
440 mapping_t *lcl_map, *rmt_map;
441 u32 sw_if_index, **rmts, rmts_idx;
442 uword *feip = 0, *dpid, *rmts_stored_idxp = 0;
444 u8 type, is_src_dst = 0;
447 memset (a, 0, sizeof (*a));
449 /* remove entry if it already exists */
450 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
452 dp_del_fwd_entry (lcm, dst_map_index);
455 * Determine local mapping and eid
458 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
460 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
461 lcl_eid = &lcl_map->eid;
464 * Determine remote mapping and eid
466 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
467 rmt_eid = &rmt_map->eid;
470 * Build and insert data plane forwarding entry
474 if (MR_MODE_SRC_DST == lcm->map_request_mode)
476 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
478 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
479 &gid_address_sd_dst (rmt_eid));
480 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
481 &gid_address_sd_src (rmt_eid));
485 gid_address_copy (&a->rmt_eid, rmt_eid);
486 gid_address_copy (&a->lcl_eid, lcl_eid);
491 gid_address_copy (&a->rmt_eid, rmt_eid);
493 a->vni = gid_address_vni (&a->rmt_eid);
494 a->is_src_dst = is_src_dst;
496 /* get vrf or bd_index associated to vni */
497 type = gid_address_type (&a->rmt_eid);
498 if (GID_ADDR_IP_PREFIX == type)
500 dpid = hash_get (lcm->table_id_by_vni, a->vni);
503 clib_warning ("vni %d not associated to a vrf!", a->vni);
506 a->table_id = dpid[0];
508 else if (GID_ADDR_MAC == type)
510 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
513 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
519 /* find best locator pair that 1) verifies LISP policy 2) are connected */
520 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
522 /* Either rmt mapping is negative or we can't find underlay path.
523 * Try again with petr if configured */
524 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
526 rmt_map = lisp_get_petr_mapping (lcm);
527 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
534 a->action = rmt_map->action;
537 rv = vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
540 if (a->locator_pairs)
541 vec_free (a->locator_pairs);
545 /* add tunnel to fwd entry table */
546 pool_get (lcm->fwd_entry_pool, fe);
547 vnet_lisp_gpe_add_fwd_counters (a, fe - lcm->fwd_entry_pool);
549 fe->locator_pairs = a->locator_pairs;
550 gid_address_copy (&fe->reid, &a->rmt_eid);
553 gid_address_copy (&fe->leid, &a->lcl_eid);
555 gid_address_copy (&fe->leid, lcl_eid);
557 fe->is_src_dst = is_src_dst;
558 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
559 fe - lcm->fwd_entry_pool);
561 /* Add rmt mapping to the vector of adjacent mappings to lcl mapping */
563 hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index);
564 if (!rmts_stored_idxp)
566 pool_get (lcm->lcl_to_rmt_adjacencies, rmts);
567 memset (rmts, 0, sizeof (*rmts));
568 rmts_idx = rmts - lcm->lcl_to_rmt_adjacencies;
569 hash_set (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index, rmts_idx);
573 rmts_idx = (u32) (*rmts_stored_idxp);
574 rmts = pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idx);
576 vec_add1 (rmts[0], dst_map_index);
583 } fwd_entry_mt_arg_t;
586 dp_add_fwd_entry_thread_fn (void *arg)
588 fwd_entry_mt_arg_t *a = arg;
589 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
590 dp_add_fwd_entry (lcm, a->si, a->di);
595 dp_add_fwd_entry_from_mt (u32 si, u32 di)
597 fwd_entry_mt_arg_t a;
599 memset (&a, 0, sizeof (a));
603 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
604 (u8 *) & a, sizeof (a));
609 * Returns vector of adjacencies.
611 * The caller must free the vector returned by this function.
613 * @param vni virtual network identifier
614 * @return vector of adjacencies
617 vnet_lisp_adjacencies_get_by_vni (u32 vni)
619 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
621 lisp_adjacency_t *adjs = 0, adj;
624 pool_foreach(fwd, lcm->fwd_entry_pool,
626 if (gid_address_vni (&fwd->reid) != vni)
629 gid_address_copy (&adj.reid, &fwd->reid);
630 gid_address_copy (&adj.leid, &fwd->leid);
631 vec_add1 (adjs, adj);
639 get_map_server (ip_address_t * a)
641 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
644 vec_foreach (m, lcm->map_servers)
646 if (!ip_address_cmp (&m->address, a))
655 get_map_resolver (ip_address_t * a)
657 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
660 vec_foreach (m, lcm->map_resolvers)
662 if (!ip_address_cmp (&m->address, a))
671 vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
674 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
675 lisp_msmr_t _ms, *ms = &_ms;
677 if (vnet_lisp_enable_disable_status () == 0)
679 clib_warning ("LISP is disabled!");
680 return VNET_API_ERROR_LISP_DISABLED;
685 if (get_map_server (addr))
687 clib_warning ("map-server %U already exists!", format_ip_address,
692 memset (ms, 0, sizeof (*ms));
693 ip_address_copy (&ms->address, addr);
694 vec_add1 (lcm->map_servers, ms[0]);
696 if (vec_len (lcm->map_servers) == 1)
697 lcm->do_map_server_election = 1;
701 for (i = 0; i < vec_len (lcm->map_servers); i++)
703 ms = vec_elt_at_index (lcm->map_servers, i);
704 if (!ip_address_cmp (&ms->address, addr))
706 if (!ip_address_cmp (&ms->address, &lcm->active_map_server))
707 lcm->do_map_server_election = 1;
709 vec_del1 (lcm->map_servers, i);
719 * Add/remove mapping to/from map-cache. Overwriting not allowed.
722 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
723 u32 * map_index_result)
725 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
726 u32 mi, *map_indexp, map_index, i;
727 u32 **rmts = 0, *remote_idxp, rmts_itr, remote_idx;
729 mapping_t *m, *old_map;
732 if (gid_address_type (&a->eid) == GID_ADDR_NSH)
734 if (gid_address_vni (&a->eid) != 0)
736 clib_warning ("Supported only default VNI for NSH!");
737 return VNET_API_ERROR_INVALID_ARGUMENT;
739 if (gid_address_nsh_spi (&a->eid) > MAX_VALUE_U24)
741 clib_warning ("SPI is greater than 24bit!");
742 return VNET_API_ERROR_INVALID_ARGUMENT;
746 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
747 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
750 /* TODO check if overwriting and take appropriate actions */
751 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
753 clib_warning ("eid %U found in the eid-table", format_gid_address,
755 return VNET_API_ERROR_VALUE_EXIST;
758 pool_get (lcm->mapping_pool, m);
759 gid_address_copy (&m->eid, &a->eid);
760 m->locator_set_index = a->locator_set_index;
762 m->action = a->action;
764 m->is_static = a->is_static;
765 m->key = vec_dup (a->key);
766 m->key_id = a->key_id;
768 map_index = m - lcm->mapping_pool;
769 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
772 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
774 clib_warning ("Locator set with index %d doesn't exist",
775 a->locator_set_index);
776 return VNET_API_ERROR_INVALID_VALUE;
779 /* add eid to list of eids supported by locator-set */
780 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
781 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
782 a->locator_set_index);
783 vec_add1 (eid_indexes[0], map_index);
788 vec_add1 (lcm->local_mappings_indexes, map_index);
790 map_index_result[0] = map_index;
794 if (mi == GID_LOOKUP_MISS)
796 clib_warning ("eid %U not found in the eid-table",
797 format_gid_address, &a->eid);
798 return VNET_API_ERROR_INVALID_VALUE;
801 /* clear locator-set to eids binding */
802 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
803 a->locator_set_index);
804 for (i = 0; i < vec_len (eid_indexes[0]); i++)
806 map_indexp = vec_elt_at_index (eid_indexes[0], i);
807 if (map_indexp[0] == mi)
810 vec_del1 (eid_indexes[0], i);
812 /* remove local mark if needed */
813 m = pool_elt_at_index (lcm->mapping_pool, mi);
816 /* Remove adjacencies associated with the local mapping */
817 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
821 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
822 vec_foreach (remote_idxp, rmts[0])
824 dp_del_fwd_entry (lcm, remote_idxp[0]);
827 pool_put (lcm->lcl_to_rmt_adjacencies, rmts);
828 hash_unset (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
832 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
834 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
835 if (lm_indexp[0] == mi)
838 vec_del1 (lcm->local_mappings_indexes, k);
842 /* Remove remote (if present) from the vectors of lcl-to-rmts
843 * TODO: Address this in a more efficient way.
846 pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies,
848 vec_foreach_index (rmts_itr, rmts[0])
850 remote_idx = vec_elt (rmts[0], rmts_itr);
851 if (mi == remote_idx)
853 vec_del1 (rmts[0], rmts_itr);
861 /* remove mapping from dictionary */
862 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
863 gid_address_free (&m->eid);
864 pool_put_index (lcm->mapping_pool, mi);
871 * Add/update/delete mapping to/in/from map-cache.
874 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
875 u32 * map_index_result)
881 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
883 if (vnet_lisp_enable_disable_status () == 0)
885 clib_warning ("LISP is disabled!");
886 return VNET_API_ERROR_LISP_DISABLED;
889 vni = gid_address_vni (&a->eid);
890 type = gid_address_type (&a->eid);
891 if (GID_ADDR_IP_PREFIX == type)
892 dp_table = hash_get (lcm->table_id_by_vni, vni);
893 else if (GID_ADDR_MAC == type)
894 dp_table = hash_get (lcm->bd_id_by_vni, vni);
896 if (!dp_table && GID_ADDR_NSH != type)
898 clib_warning ("vni %d not associated to a %s!", vni,
899 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
900 return VNET_API_ERROR_INVALID_VALUE;
903 /* store/remove mapping from map-cache */
904 return vnet_lisp_map_cache_add_del (a, map_index_result);
908 add_l2_arp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
911 u32 version = (u32) kvp->key[0];
915 u32 bd = (u32) (kvp->key[0] >> 32);
916 hash_set (ht[0], bd, 0);
920 vnet_lisp_l2_arp_bds_get (void)
922 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
925 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
926 add_l2_arp_bd, &bds);
931 add_ndp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
934 u32 version = (u32) kvp->key[0];
938 u32 bd = (u32) (kvp->key[0] >> 32);
939 hash_set (ht[0], bd, 0);
943 vnet_lisp_ndp_bds_get (void)
945 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
948 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
957 } lisp_add_l2_arp_ndp_args_t;
960 add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
962 lisp_add_l2_arp_ndp_args_t *a = arg;
963 lisp_api_l2_arp_entry_t **vector = a->vector, e;
965 u32 version = (u32) kvp->key[0];
969 u32 bd = (u32) (kvp->key[0] >> 32);
973 mac_copy (e.mac, (void *) &kvp->value);
974 e.ip4 = (u32) kvp->key[1];
975 vec_add1 (vector[0], e);
979 lisp_api_l2_arp_entry_t *
980 vnet_lisp_l2_arp_entries_get_by_bd (u32 bd)
982 lisp_api_l2_arp_entry_t *entries = 0;
983 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
984 lisp_add_l2_arp_ndp_args_t a;
989 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
990 add_l2_arp_entry, &a);
995 add_ndp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
997 lisp_add_l2_arp_ndp_args_t *a = arg;
998 lisp_api_ndp_entry_t **vector = a->vector, e;
1000 u32 version = (u32) kvp->key[0];
1004 u32 bd = (u32) (kvp->key[0] >> 32);
1008 mac_copy (e.mac, (void *) &kvp->value);
1009 clib_memcpy (e.ip6, &kvp->key[1], 16);
1010 vec_add1 (vector[0], e);
1014 lisp_api_ndp_entry_t *
1015 vnet_lisp_ndp_entries_get_by_bd (u32 bd)
1017 lisp_api_ndp_entry_t *entries = 0;
1018 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1019 lisp_add_l2_arp_ndp_args_t a;
1021 a.vector = &entries;
1024 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
1030 vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac, u8 is_add)
1032 if (vnet_lisp_enable_disable_status () == 0)
1034 clib_warning ("LISP is disabled!");
1035 return VNET_API_ERROR_LISP_DISABLED;
1038 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1041 u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key);
1044 if (res != GID_LOOKUP_MISS_L2)
1046 clib_warning ("Entry %U exists in DB!", format_gid_address, key);
1047 return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
1049 u64 val = mac_to_u64 (mac);
1050 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val,
1055 if (res == GID_LOOKUP_MISS_L2)
1057 clib_warning ("ONE entry %U not found - cannot delete!",
1058 format_gid_address, key);
1061 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0,
1069 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
1071 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1072 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
1074 if (vnet_lisp_enable_disable_status () == 0)
1076 clib_warning ("LISP is disabled!");
1077 return VNET_API_ERROR_LISP_DISABLED;
1080 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
1081 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
1083 if (!is_l2 && (vni == 0 || dp_id == 0))
1085 clib_warning ("can't add/del default vni-vrf mapping!");
1089 dp_idp = hash_get (dp_table_by_vni[0], vni);
1090 vnip = hash_get (vni_by_dp_table[0], dp_id);
1096 clib_warning ("vni %d or vrf %d already used in vrf/vni "
1097 "mapping!", vni, dp_id);
1100 hash_set (dp_table_by_vni[0], vni, dp_id);
1101 hash_set (vni_by_dp_table[0], dp_id, vni);
1103 /* create dp iface */
1104 dp_add_del_iface (lcm, vni, is_l2, 1);
1108 if (!dp_idp || !vnip)
1110 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
1111 "mapping!", vni, dp_id);
1114 /* remove dp iface */
1115 dp_add_del_iface (lcm, vni, is_l2, 0);
1117 hash_unset (dp_table_by_vni[0], vni);
1118 hash_unset (vni_by_dp_table[0], dp_id);
1124 /* return 0 if the two locator sets are identical 1 otherwise */
1126 compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
1127 locator_t * new_locators)
1130 locator_t *old_loc, *new_loc;
1132 if (vec_len (old_ls_indexes) != vec_len (new_locators))
1135 for (i = 0; i < vec_len (new_locators); i++)
1137 old_li = vec_elt (old_ls_indexes, i);
1138 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
1140 new_loc = vec_elt_at_index (new_locators, i);
1142 if (locator_cmp (old_loc, new_loc))
1152 gid_address_t *eids_to_be_deleted;
1153 } remove_mapping_args_t;
1156 * Callback invoked when a sub-prefix is found
1159 remove_mapping_if_needed (u32 mi, void *arg)
1162 remove_mapping_args_t *a = arg;
1163 lisp_cp_main_t *lcm = a->lcm;
1167 m = pool_elt_at_index (lcm->mapping_pool, mi);
1171 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
1175 if (0 != vec_len (ls->locator_indices))
1180 if (0 == vec_len (ls->locator_indices))
1185 vec_add1 (a->eids_to_be_deleted, m->eid);
1189 * This function searches map cache and looks for IP prefixes that are subset
1190 * of the provided one. If such prefix is found depending on 'is_negative'
1193 * 1) if is_negative is true and found prefix points to positive mapping,
1194 * then the mapping is removed
1195 * 2) if is_negative is false and found prefix points to negative mapping,
1196 * then the mapping is removed
1199 remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
1203 remove_mapping_args_t a;
1205 memset (&a, 0, sizeof (a));
1207 /* do this only in src/dst mode ... */
1208 if (MR_MODE_SRC_DST != lcm->map_request_mode)
1211 /* ... and only for IP prefix */
1212 if (GID_ADDR_SRC_DST != gid_address_type (eid)
1213 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
1216 a.is_negative = is_negative;
1219 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
1220 remove_mapping_if_needed, &a);
1222 vec_foreach (e, a.eids_to_be_deleted)
1224 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
1226 memset (adj_args, 0, sizeof (adj_args[0]));
1227 gid_address_copy (&adj_args->reid, e);
1228 adj_args->is_add = 0;
1229 if (vnet_lisp_add_del_adjacency (adj_args))
1230 clib_warning ("failed to del adjacency!");
1232 vnet_lisp_del_mapping (e, NULL);
1235 vec_free (a.eids_to_be_deleted);
1239 mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
1241 timing_wheel_delete (&lcm->wheel, mi);
1245 is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
1247 fib_node_index_t fei;
1248 fib_prefix_t prefix;
1249 fib_entry_flag_t flags;
1251 ip_address_to_fib_prefix (addr, &prefix);
1253 fei = fib_table_lookup (0, &prefix);
1254 flags = fib_entry_get_flags (fei);
1255 return (FIB_ENTRY_FLAG_LOCAL & flags);
1259 * Adds/updates mapping. Does not program forwarding.
1261 * @param a parameters of the new mapping
1262 * @param rlocs vector of remote locators
1263 * @param res_map_index index of the newly created mapping
1264 * @param locators_changed indicator if locators were updated in the mapping
1265 * @return return code
1268 vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
1270 u32 * res_map_index, u8 * is_updated)
1272 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1273 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1274 u32 mi, ls_index = 0, dst_map_index;
1278 if (vnet_lisp_enable_disable_status () == 0)
1280 clib_warning ("LISP is disabled!");
1281 return VNET_API_ERROR_LISP_DISABLED;
1285 res_map_index[0] = ~0;
1289 memset (ls_args, 0, sizeof (ls_args[0]));
1291 ls_args->locators = rlocs;
1292 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
1293 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1295 /* check if none of the locators match localy configured address */
1296 vec_foreach (loc, rlocs)
1298 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1299 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1301 clib_warning ("RLOC %U matches a local address!",
1302 format_gid_address, &loc->address);
1303 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1307 /* overwrite: if mapping already exists, decide if locators should be
1308 * updated and be done */
1309 if (old_map && gid_address_cmp (&old_map->eid, &a->eid) == 0)
1311 if (!a->is_static && (old_map->is_static || old_map->local))
1313 /* do not overwrite local or static remote mappings */
1314 clib_warning ("mapping %U rejected due to collision with local "
1315 "or static remote mapping!", format_gid_address,
1320 locator_set_t *old_ls;
1322 /* update mapping attributes */
1323 old_map->action = a->action;
1324 if (old_map->action != a->action && NULL != is_updated)
1327 old_map->authoritative = a->authoritative;
1328 old_map->ttl = a->ttl;
1330 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1331 old_map->locator_set_index);
1332 if (compare_locators (lcm, old_ls->locator_indices, ls_args->locators))
1334 /* set locator-set index to overwrite */
1335 ls_args->is_add = 1;
1336 ls_args->index = old_map->locator_set_index;
1337 vnet_lisp_add_del_locator_set (ls_args, 0);
1342 res_map_index[0] = mi;
1347 remove_overlapping_sub_prefixes (lcm, &a->eid, 0 == ls_args->locators);
1349 ls_args->is_add = 1;
1350 ls_args->index = ~0;
1352 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1356 a->locator_set_index = ls_index;
1357 vnet_lisp_map_cache_add_del (a, &dst_map_index);
1360 res_map_index[0] = dst_map_index;
1368 * Removes a mapping. Does not program forwarding.
1370 * @param eid end-host indetifier
1371 * @param res_map_index index of the removed mapping
1372 * @return return code
1375 vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index)
1377 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1378 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1379 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1383 memset (ls_args, 0, sizeof (ls_args[0]));
1384 memset (m_args, 0, sizeof (m_args[0]));
1386 res_map_index[0] = ~0;
1388 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1389 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1391 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1393 clib_warning ("cannot delete mapping for eid %U",
1394 format_gid_address, eid);
1399 gid_address_copy (&m_args->eid, eid);
1400 m_args->locator_set_index = old_map->locator_set_index;
1402 /* delete mapping associated from map-cache */
1403 vnet_lisp_map_cache_add_del (m_args, 0);
1405 ls_args->is_add = 0;
1406 ls_args->index = old_map->locator_set_index;
1408 /* delete locator set */
1409 vnet_lisp_add_del_locator_set (ls_args, 0);
1411 /* delete timer associated to the mapping if any */
1412 if (old_map->timer_set)
1413 mapping_delete_timer (lcm, mi);
1415 /* return old mapping index */
1417 res_map_index[0] = mi;
1424 vnet_lisp_clear_all_remote_adjacencies (void)
1427 u32 mi, *map_indices = 0, *map_indexp;
1428 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1429 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1430 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1433 pool_foreach_index (mi, lcm->mapping_pool,
1435 vec_add1 (map_indices, mi);
1439 vec_foreach (map_indexp, map_indices)
1441 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1444 dp_del_fwd_entry (lcm, map_indexp[0]);
1446 dm_args->is_add = 0;
1447 gid_address_copy (&dm_args->eid, &map->eid);
1448 dm_args->locator_set_index = map->locator_set_index;
1450 /* delete mapping associated to fwd entry */
1451 vnet_lisp_map_cache_add_del (dm_args, 0);
1455 ls->index = map->locator_set_index;
1456 /* delete locator set */
1457 rv = vnet_lisp_add_del_locator_set (ls, 0);
1465 vec_free (map_indices);
1470 * Adds adjacency or removes forwarding entry associated to remote mapping.
1471 * Note that adjacencies are not stored, they only result in forwarding entries
1475 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1477 lisp_cp_main_t *lcm = &lisp_control_main;
1478 u32 local_mi, remote_mi = ~0;
1480 if (vnet_lisp_enable_disable_status () == 0)
1482 clib_warning ("LISP is disabled!");
1483 return VNET_API_ERROR_LISP_DISABLED;
1486 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1487 &a->reid, &a->leid);
1488 if (GID_LOOKUP_MISS == remote_mi)
1490 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1491 format_gid_address, &a->reid);
1498 /* check if source eid has an associated mapping. If pitr mode is on,
1499 * just use the pitr's mapping */
1501 local_mi = lcm->pitr_map_index;
1504 if (gid_address_type (&a->reid) == GID_ADDR_NSH)
1506 if (lcm->nsh_map_index == ~0)
1507 local_mi = GID_LOOKUP_MISS;
1509 local_mi = lcm->nsh_map_index;
1513 local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1518 if (GID_LOOKUP_MISS == local_mi)
1520 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1521 format_gid_address, &a->leid);
1526 /* update forwarding */
1527 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1530 dp_del_fwd_entry (lcm, remote_mi);
1536 vnet_lisp_set_map_request_mode (u8 mode)
1538 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1540 if (vnet_lisp_enable_disable_status () == 0)
1542 clib_warning ("LISP is disabled!");
1543 return VNET_API_ERROR_LISP_DISABLED;
1546 if (mode >= _MR_MODE_MAX)
1548 clib_warning ("Invalid LISP map request mode %d!", mode);
1549 return VNET_API_ERROR_INVALID_ARGUMENT;
1552 lcm->map_request_mode = mode;
1557 vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
1559 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1560 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
1561 u32 locator_set_index = ~0;
1565 if (vnet_lisp_enable_disable_status () == 0)
1567 clib_warning ("LISP is disabled!");
1568 return VNET_API_ERROR_LISP_DISABLED;
1573 if (lcm->nsh_map_index == (u32) ~ 0)
1575 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1578 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1581 locator_set_index = p[0];
1583 pool_get (lcm->mapping_pool, m);
1584 memset (m, 0, sizeof *m);
1585 m->locator_set_index = locator_set_index;
1588 lcm->nsh_map_index = m - lcm->mapping_pool;
1590 if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
1596 if (lcm->nsh_map_index != (u32) ~ 0)
1598 /* remove NSH mapping */
1599 pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
1600 lcm->nsh_map_index = ~0;
1601 vnet_lisp_gpe_del_nsh_iface (lgm);
1608 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1610 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1611 u32 locator_set_index = ~0;
1615 if (vnet_lisp_enable_disable_status () == 0)
1617 clib_warning ("LISP is disabled!");
1618 return VNET_API_ERROR_LISP_DISABLED;
1621 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1624 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1627 locator_set_index = p[0];
1631 pool_get (lcm->mapping_pool, m);
1632 m->locator_set_index = locator_set_index;
1635 lcm->pitr_map_index = m - lcm->mapping_pool;
1637 /* enable pitr mode */
1642 /* remove pitr mapping */
1643 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1645 /* disable pitr mode */
1652 vnet_lisp_map_register_fallback_threshold_set (u32 value)
1654 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1657 return VNET_API_ERROR_INVALID_ARGUMENT;
1660 lcm->max_expired_map_registers = value;
1665 vnet_lisp_map_register_fallback_threshold_get (void)
1667 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1668 return lcm->max_expired_map_registers;
1672 * Configure Proxy-ETR
1674 * @param ip PETR's IP address
1675 * @param is_add Flag that indicates if this is an addition or removal
1677 * return 0 on success
1680 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1682 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1685 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1688 if (vnet_lisp_enable_disable_status () == 0)
1690 clib_warning ("LISP is disabled!");
1691 return VNET_API_ERROR_LISP_DISABLED;
1694 memset (ls_args, 0, sizeof (*ls_args));
1698 /* Create dummy petr locator-set */
1699 memset (&loc, 0, sizeof (loc));
1700 gid_address_from_ip (&loc.address, ip);
1702 loc.state = loc.weight = 1;
1705 ls_args->is_add = 1;
1706 ls_args->index = ~0;
1707 vec_add1 (ls_args->locators, loc);
1708 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1710 /* Add petr mapping */
1711 pool_get (lcm->mapping_pool, m);
1712 m->locator_set_index = ls_index;
1713 lcm->petr_map_index = m - lcm->mapping_pool;
1715 /* Enable use-petr */
1716 lcm->flags |= LISP_FLAG_USE_PETR;
1720 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1722 /* Remove petr locator */
1723 ls_args->is_add = 0;
1724 ls_args->index = m->locator_set_index;
1725 vnet_lisp_add_del_locator_set (ls_args, 0);
1727 /* Remove petr mapping */
1728 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1730 /* Disable use-petr */
1731 lcm->flags &= ~LISP_FLAG_USE_PETR;
1736 /* cleans locator to locator-set data and removes locators not part of
1737 * any locator-set */
1739 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1741 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1742 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1743 for (i = 0; i < vec_len (ls->locator_indices); i++)
1745 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1746 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1748 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1750 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1751 if (ls_indexp[0] == lsi)
1755 /* delete index for removed locator-set */
1756 vec_del1 (ls_indexes[0], j);
1758 /* delete locator if it's part of no locator-set */
1759 if (vec_len (ls_indexes[0]) == 0)
1761 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1762 vec_add1 (to_be_deleted, i);
1768 for (i = 0; i < vec_len (to_be_deleted); i++)
1770 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1771 vec_del1 (ls->locator_indices, loc_indexp[0]);
1773 vec_free (to_be_deleted);
1777 static inline uword *
1778 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1780 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1785 /* find locator-set */
1789 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1800 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1806 ASSERT (ls != NULL);
1807 ASSERT (loc != NULL);
1809 vec_foreach (locit, ls->locator_indices)
1811 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1812 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1813 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1815 clib_warning ("Duplicate locator");
1816 return VNET_API_ERROR_VALUE_EXIST;
1824 update_adjacencies_by_map_index (lisp_cp_main_t * lcm, u8 is_local,
1825 u32 mapping_index, u8 remove_only)
1829 vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
1831 map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
1834 pool_foreach(fwd, lcm->fwd_entry_pool,
1836 if ((is_local && 0 == gid_address_cmp (&map->eid, &fwd->leid)) ||
1837 (!is_local && 0 == gid_address_cmp (&map->eid, &fwd->reid)))
1840 gid_address_copy (&a->leid, &fwd->leid);
1841 gid_address_copy (&a->reid, &fwd->reid);
1843 vnet_lisp_add_del_adjacency (a);
1848 vnet_lisp_add_del_adjacency (a);
1856 update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm, u8 is_local,
1857 u32 ls_index, u8 remove_only)
1862 if (vec_len (lcm->locator_set_to_eids) <= ls_index)
1865 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
1867 for (i = 0; i < vec_len (eid_indexes[0]); i++)
1869 map_indexp = vec_elt_at_index (eid_indexes[0], i);
1870 update_adjacencies_by_map_index (lcm, is_local, map_indexp[0],
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 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, loc->local, 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 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 = hash_create_vec (
2059 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
2062 /* mark as local locator-set */
2063 vec_add1 (lcm->local_locator_set_indexes, ls_index);
2065 ls->local = a->local;
2067 ls_result[0] = ls_index;
2070 ret = vnet_lisp_add_del_locator (a, ls, NULL);
2078 p = get_locator_set_index (a, p);
2081 clib_warning ("locator-set %v doesn't exists", a->name);
2085 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2088 clib_warning ("locator-set with index %d doesn't exists", p[0]);
2092 if (lcm->mreq_itr_rlocs == p[0])
2094 clib_warning ("Can't delete the locator-set used to constrain "
2095 "the itr-rlocs in map-requests!");
2099 if (vec_len (lcm->locator_set_to_eids) != 0)
2101 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
2102 if (vec_len (eid_indexes[0]) != 0)
2105 ("Can't delete a locator that supports a mapping!");
2110 /* clean locator to locator-sets data */
2111 clean_locator_to_locator_set (lcm, p[0]);
2117 vec_foreach_index (it, lcm->local_locator_set_indexes)
2119 lsi = vec_elt (lcm->local_locator_set_indexes, it);
2122 vec_del1 (lcm->local_locator_set_indexes, it);
2126 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
2128 vec_free (ls->name);
2129 vec_free (ls->locator_indices);
2130 pool_put (lcm->locator_set_pool, ls);
2136 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
2138 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2140 lcm->rloc_probing = is_enable;
2145 vnet_lisp_map_register_enable_disable (u8 is_enable)
2147 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2149 lcm->map_registering = is_enable;
2154 vnet_lisp_enable_disable (u8 is_enable)
2156 u32 vni, dp_table, **rmts;
2157 clib_error_t *error = 0;
2158 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2159 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
2161 a->is_en = is_enable;
2162 error = vnet_lisp_gpe_enable_disable (a);
2165 return clib_error_return (0, "failed to %s data-plane!",
2166 a->is_en ? "enable" : "disable");
2171 /* enable all l2 and l3 ifaces */
2174 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
2175 dp_add_del_iface(lcm, vni, 0, 1);
2177 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
2178 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
2184 /* clear interface table */
2185 hash_free (lcm->fwd_entry_by_mapping_index);
2186 pool_free (lcm->fwd_entry_pool);
2187 /* Clear state tracking rmt-lcl fwd entries */
2189 pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
2194 hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
2195 pool_free (lcm->lcl_to_rmt_adjacencies);
2198 /* update global flag */
2199 lcm->is_enabled = is_enable;
2205 vnet_lisp_enable_disable_status (void)
2207 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2208 return lcm->is_enabled;
2212 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
2214 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2216 lisp_msmr_t _mr, *mr = &_mr;
2218 if (vnet_lisp_enable_disable_status () == 0)
2220 clib_warning ("LISP is disabled!");
2221 return VNET_API_ERROR_LISP_DISABLED;
2227 if (get_map_resolver (&a->address))
2229 clib_warning ("map-resolver %U already exists!", format_ip_address,
2234 memset (mr, 0, sizeof (*mr));
2235 ip_address_copy (&mr->address, &a->address);
2236 vec_add1 (lcm->map_resolvers, *mr);
2238 if (vec_len (lcm->map_resolvers) == 1)
2239 lcm->do_map_resolver_election = 1;
2243 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
2245 mr = vec_elt_at_index (lcm->map_resolvers, i);
2246 if (!ip_address_cmp (&mr->address, &a->address))
2248 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
2249 lcm->do_map_resolver_election = 1;
2251 vec_del1 (lcm->map_resolvers, i);
2260 vnet_lisp_map_register_set_ttl (u32 ttl)
2262 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2263 lcm->map_register_ttl = ttl;
2268 vnet_lisp_map_register_get_ttl (void)
2270 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2271 return lcm->map_register_ttl;
2275 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
2277 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2280 if (vnet_lisp_enable_disable_status () == 0)
2282 clib_warning ("LISP is disabled!");
2283 return VNET_API_ERROR_LISP_DISABLED;
2288 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
2291 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
2292 return VNET_API_ERROR_INVALID_ARGUMENT;
2295 lcm->mreq_itr_rlocs = p[0];
2299 lcm->mreq_itr_rlocs = ~0;
2305 /* Statistics (not really errors) */
2306 #define foreach_lisp_cp_lookup_error \
2308 _(MAP_REQUESTS_SENT, "map-request sent") \
2309 _(ARP_REPLY_TX, "ARP replies sent") \
2310 _(NDP_NEIGHBOR_ADVERTISEMENT_TX, \
2311 "neighbor advertisement sent")
2313 static char *lisp_cp_lookup_error_strings[] = {
2314 #define _(sym,string) string,
2315 foreach_lisp_cp_lookup_error
2321 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
2322 foreach_lisp_cp_lookup_error
2324 LISP_CP_LOOKUP_N_ERROR,
2325 } lisp_cp_lookup_error_t;
2329 LISP_CP_LOOKUP_NEXT_DROP,
2330 LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
2331 LISP_CP_LOOKUP_N_NEXT,
2332 } lisp_cp_lookup_next_t;
2336 gid_address_t dst_eid;
2337 ip_address_t map_resolver_ip;
2338 } lisp_cp_lookup_trace_t;
2341 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
2343 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2344 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2345 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
2347 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
2348 format_ip_address, &t->map_resolver_ip, format_gid_address,
2354 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
2355 ip_address_t * sloc)
2360 if (vec_len (lcm->map_resolvers) == 0)
2362 clib_warning ("No map-resolver configured");
2366 /* find the first mr ip we have a route to and the ip of the
2367 * iface that has a route to it */
2368 vec_foreach (mrit, lcm->map_resolvers)
2371 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
2373 ip_address_copy (mr_ip, a);
2375 /* also update globals */
2380 clib_warning ("Can't find map-resolver and local interface ip!");
2384 static gid_address_t *
2385 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
2391 ip_interface_address_t *ia = 0;
2392 gid_address_t gid_data, *gid = &gid_data;
2393 gid_address_t *rlocs = 0;
2394 ip_prefix_t *ippref = &gid_address_ippref (gid);
2395 ip_address_t *rloc = &ip_prefix_addr (ippref);
2397 memset (gid, 0, sizeof (gid[0]));
2398 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
2399 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
2401 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
2402 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
2404 /* Add ipv4 locators first TODO sort them */
2407 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2408 loc->sw_if_index, 1 /* unnumbered */,
2410 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
2411 ip_address_set (rloc, addr, IP4);
2412 ip_prefix_len (ippref) = 32;
2413 ip_prefix_normalize (ippref);
2414 vec_add1 (rlocs, gid[0]);
2417 /* Add ipv6 locators */
2418 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2419 loc->sw_if_index, 1 /* unnumbered */,
2421 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
2422 ip_address_set (rloc, addr, IP6);
2423 ip_prefix_len (ippref) = 128;
2424 ip_prefix_normalize (ippref);
2425 vec_add1 (rlocs, gid[0]);
2433 static vlib_buffer_t *
2434 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
2435 ip_address_t * sloc, ip_address_t * rloc,
2436 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
2440 vlib_main_t *vm = lcm->vlib_main;
2442 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2444 clib_warning ("Can't allocate buffer for Map-Request!");
2448 b = vlib_get_buffer (vm, bi);
2450 /* leave some space for the encap headers */
2451 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2454 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2455 1 /* rloc probe */ , nonce_res);
2457 /* push outer ip header */
2458 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2466 static vlib_buffer_t *
2467 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2468 gid_address_t * seid, gid_address_t * deid,
2469 locator_set_t * loc_set, ip_address_t * mr_ip,
2470 ip_address_t * sloc, u8 is_smr_invoked,
2471 u64 * nonce_res, u32 * bi_res)
2475 gid_address_t *rlocs = 0;
2476 vlib_main_t *vm = lcm->vlib_main;
2478 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2480 clib_warning ("Can't allocate buffer for Map-Request!");
2484 b = vlib_get_buffer (vm, bi);
2487 /* leave some space for the encap headers */
2488 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2491 rlocs = build_itr_rloc_list (lcm, loc_set);
2493 if (MR_MODE_SRC_DST == lcm->map_request_mode
2494 && GID_ADDR_SRC_DST != gid_address_type (deid))
2497 memset (&sd, 0, sizeof (sd));
2498 build_src_dst (&sd, seid, deid);
2499 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2500 0 /* rloc probe */ , nonce_res);
2505 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2506 0 /* rloc probe */ , nonce_res);
2509 /* push ecm: udp-ip-lisp */
2510 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2512 /* push outer ip header */
2513 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2523 reset_pending_mr_counters (pending_map_request_t * r)
2525 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2529 #define foreach_msmr \
2535 elect_map_ ## name (lisp_cp_main_t * lcm) \
2538 vec_foreach (mr, lcm->map_ ## name ## s) \
2542 ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
2543 lcm->do_map_ ## name ## _election = 0; \
2552 free_map_register_records (mapping_t * maps)
2555 vec_foreach (map, maps) vec_free (map->locators);
2561 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2562 ip_address_t * probed_loc)
2565 locator_t *loc, new;
2566 ip_interface_address_t *ia = 0;
2568 ip_address_t *new_ip = &gid_address_ip (&new.address);
2571 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2573 vec_foreach (li, ls->locator_indices)
2575 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2580 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2581 loc->sw_if_index, 1 /* unnumbered */,
2583 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2585 ip_address_set (new_ip, addr, IP4);
2588 /* Add ipv6 locators */
2589 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2590 loc->sw_if_index, 1 /* unnumbered */,
2592 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2594 ip_address_set (new_ip, addr, IP6);
2598 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2601 vec_add1 (m->locators, new);
2606 build_map_register_record_list (lisp_cp_main_t * lcm)
2608 mapping_t *recs = 0, rec, *m;
2611 pool_foreach(m, lcm->mapping_pool,
2613 /* for now build only local mappings */
2618 add_locators (lcm, &rec, m->locator_set_index, NULL);
2619 vec_add1 (recs, rec);
2627 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2628 lisp_key_type_t key_id, u8 * key,
2629 u16 auth_data_len, u32 msg_len)
2631 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2632 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2634 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2635 (unsigned char *) map_reg_hdr, msg_len, NULL,
2637 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2642 static vlib_buffer_t *
2643 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2644 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2645 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2650 u32 bi, auth_data_len = 0, msg_len = 0;
2651 vlib_main_t *vm = lcm->vlib_main;
2653 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2655 clib_warning ("Can't allocate buffer for Map-Register!");
2659 b = vlib_get_buffer (vm, bi);
2661 /* leave some space for the encap headers */
2662 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2664 auth_data_len = auth_data_len_by_key_id (key_id);
2665 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2666 auth_data_len, nonce_res,
2669 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2672 /* push outer ip header */
2673 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2682 get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
2685 while (lcm->do_map_ ## name ## _election \
2686 | (0 == ip_fib_get_first_egress_ip_for_dst \
2687 (lcm, &lcm->active_map_ ##name, ip))) \
2689 if (0 == elect_map_ ## name (lcm)) \
2690 /* all map resolvers/servers are down */ \
2692 /* restart MR/MS checking by marking all of them up */ \
2693 vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
2702 /* CP output statistics */
2703 #define foreach_lisp_cp_output_error \
2704 _(MAP_REGISTERS_SENT, "map-registers sent") \
2705 _(MAP_REQUESTS_SENT, "map-requests sent") \
2706 _(RLOC_PROBES_SENT, "rloc-probes sent")
2707 static char *lisp_cp_output_error_strings[] = {
2708 #define _(sym,string) string,
2709 foreach_lisp_cp_output_error
2715 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2716 foreach_lisp_cp_output_error
2718 LISP_CP_OUTPUT_N_ERROR,
2719 } lisp_cp_output_error_t;
2722 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2723 vlib_frame_t * from_frame)
2728 /* dummy node used only for statistics */
2730 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2731 .function = lisp_cp_output,
2732 .name = "lisp-cp-output",
2733 .vector_size = sizeof (u32),
2734 .format_trace = format_lisp_cp_input_trace,
2735 .type = VLIB_NODE_TYPE_INTERNAL,
2737 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2738 .error_strings = lisp_cp_output_error_strings,
2740 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2743 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2749 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2750 u32 local_locator_set_index, ip_address_t * sloc,
2751 ip_address_t * rloc)
2758 u32 next_index, *to_next;
2759 gid_address_t *itr_rlocs;
2761 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2762 itr_rlocs = build_itr_rloc_list (lcm, ls);
2764 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2765 vec_free (itr_rlocs);
2769 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2771 next_index = (ip_addr_version (rloc) == IP4) ?
2772 ip4_lookup_node.index : ip6_lookup_node.index;
2774 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2776 /* Enqueue the packet */
2777 to_next = vlib_frame_vector_args (f);
2780 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2786 send_rloc_probes (lisp_cp_main_t * lcm)
2792 u32 si, rloc_probes_sent = 0;
2795 pool_foreach (e, lcm->fwd_entry_pool,
2797 if (vec_len (e->locator_pairs) == 0)
2800 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2803 clib_warning ("internal error: cannot find local eid %U in "
2804 "map-cache!", format_gid_address, &e->leid);
2807 lm = pool_elt_at_index (lcm->mapping_pool, si);
2809 /* get the best (lowest) priority */
2810 lprio = e->locator_pairs[0].priority;
2812 /* send rloc-probe for pair(s) with the best remote locator priority */
2813 vec_foreach (lp, e->locator_pairs)
2815 if (lp->priority != lprio)
2818 /* get first remote locator */
2819 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2826 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2827 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2833 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2835 pending_map_register_t *pmr;
2836 u32 bi, map_registers_sent = 0;
2841 u32 next_index, *to_next;
2842 mapping_t *records, *r, *group, *k;
2844 if (get_egress_map_server_ip (lcm, &sloc) < 0)
2847 records = build_map_register_record_list (lcm);
2851 vec_foreach (r, records)
2854 u8 key_id = r->key_id;
2857 continue; /* no secret key -> map-register cannot be sent */
2860 vec_add1 (group, r[0]);
2862 /* group mappings that share common key */
2863 for (k = r + 1; k < vec_end (records); k++)
2865 if (k->key_id != r->key_id)
2868 if (vec_is_equal (k->key, r->key))
2870 vec_add1 (group, k[0]);
2871 k->key = 0; /* don't process this mapping again */
2875 b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
2876 want_map_notif, group, key_id, key, &bi);
2881 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2883 next_index = (ip_addr_version (&lcm->active_map_server) == 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);
2893 map_registers_sent++;
2895 pool_get (lcm->pending_map_registers_pool, pmr);
2896 memset (pmr, 0, sizeof (*pmr));
2897 pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
2898 hash_set (lcm->map_register_messages_by_nonce, nonce,
2899 pmr - lcm->pending_map_registers_pool);
2901 free_map_register_records (records);
2903 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2904 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
2905 map_registers_sent);
2910 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
2911 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
2913 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
2914 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
2917 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
2918 gid_address_t * seid, gid_address_t * deid,
2919 u8 is_smr_invoked, u8 is_resend)
2921 u32 next_index, bi = 0, *to_next, map_index;
2925 locator_set_t *loc_set;
2927 pending_map_request_t *pmr, *duplicate_pmr = 0;
2931 /* if there is already a pending request remember it */
2934 pool_foreach(pmr, lcm->pending_map_requests_pool,
2936 if (!gid_address_cmp (&pmr->src, seid)
2937 && !gid_address_cmp (&pmr->dst, deid))
2939 duplicate_pmr = pmr;
2945 if (!is_resend && duplicate_pmr)
2947 /* don't send the request if there is a pending map request already */
2951 /* get locator-set for seid */
2952 if (!lcm->lisp_pitr && gid_address_type (deid) != GID_ADDR_NSH)
2954 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
2955 if (map_index == ~0)
2957 clib_warning ("No local mapping found in eid-table for %U!",
2958 format_gid_address, seid);
2962 map = pool_elt_at_index (lcm->mapping_pool, map_index);
2967 ("Mapping found for src eid %U is not marked as local!",
2968 format_gid_address, seid);
2971 ls_index = map->locator_set_index;
2977 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
2978 ls_index = map->locator_set_index;
2982 if (lcm->nsh_map_index == (u32) ~ 0)
2984 clib_warning ("No locator-set defined for NSH!");
2989 map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
2990 ls_index = map->locator_set_index;
2995 /* overwrite locator set if map-request itr-rlocs configured */
2996 if (~0 != lcm->mreq_itr_rlocs)
2998 ls_index = lcm->mreq_itr_rlocs;
3001 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
3003 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
3006 duplicate_pmr->to_be_removed = 1;
3010 /* build the encapsulated map request */
3011 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
3012 &lcm->active_map_resolver,
3013 &sloc, is_smr_invoked, &nonce, &bi);
3018 /* set fib index to default and lookup node */
3019 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3020 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3021 ip4_lookup_node.index : ip6_lookup_node.index;
3023 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3025 /* Enqueue the packet */
3026 to_next = vlib_frame_vector_args (f);
3029 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3031 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3032 LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1);
3035 /* if there is a pending request already update it */
3037 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
3039 /* remove the oldest nonce */
3040 u64 CLIB_UNUSED (tmp), *nonce_del;
3041 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
3042 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
3043 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
3046 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
3047 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3048 duplicate_pmr - lcm->pending_map_requests_pool);
3052 /* add map-request to pending requests table */
3053 pool_get (lcm->pending_map_requests_pool, pmr);
3054 memset (pmr, 0, sizeof (*pmr));
3055 gid_address_copy (&pmr->src, seid);
3056 gid_address_copy (&pmr->dst, deid);
3057 clib_fifo_add1 (pmr->nonces, nonce);
3058 pmr->is_smr_invoked = is_smr_invoked;
3059 reset_pending_mr_counters (pmr);
3060 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3061 pmr - lcm->pending_map_requests_pool);
3068 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
3070 ip4_header_t *ip4 = hdr;
3073 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
3075 ip_address_set (src, &ip4->src_address, IP4);
3076 ip_address_set (dst, &ip4->dst_address, IP4);
3081 ip_address_set (src, &ip6->src_address, IP6);
3082 ip_address_set (dst, &ip6->dst_address, IP6);
3087 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3091 u32 vni = ~0, table_id = ~0;
3093 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
3094 IP4 ? FIB_PROTOCOL_IP4 :
3100 vnip = hash_get (lcm->vni_by_table_id, table_id);
3104 clib_warning ("vrf %d is not mapped to any vni!", table_id);
3110 lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
3114 l2input_main_t *l2im = &l2input_main;
3115 l2_input_config_t *config;
3116 l2_bridge_domain_t *bd_config;
3118 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
3119 config = vec_elt_at_index (l2im->configs, sw_if_index0);
3120 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
3122 return bd_config->bd_id;
3126 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
3130 u32 bd = lisp_get_bd_from_buffer_eth (b);
3132 vnip = hash_get (lcm->vni_by_bd_id, bd);
3136 clib_warning ("bridge domain %d is not mapped to any vni!", bd);
3142 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3143 gid_address_t * src, gid_address_t * dst,
3146 ethernet_header_t *eh;
3148 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3150 memset (src, 0, sizeof (*src));
3151 memset (dst, 0, sizeof (*dst));
3153 gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
3154 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3156 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
3159 u8 version, preflen;
3161 gid_address_type (src) = GID_ADDR_IP_PREFIX;
3162 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
3164 ip = vlib_buffer_get_current (b);
3165 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
3167 version = gid_address_ip_version (src);
3168 preflen = ip_address_max_len (version);
3169 gid_address_ippref_len (src) = preflen;
3170 gid_address_ippref_len (dst) = preflen;
3172 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
3173 gid_address_vni (dst) = vni;
3174 gid_address_vni (src) = vni;
3176 else if (LISP_AFI_MAC == type)
3178 ethernet_arp_header_t *ah;
3180 eh = vlib_buffer_get_current (b);
3182 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
3184 ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
3185 if (clib_net_to_host_u16 (ah->opcode)
3186 != ETHERNET_ARP_OPCODE_request)
3189 gid_address_type (dst) = GID_ADDR_ARP;
3190 gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
3191 clib_memcpy (&gid_address_arp_ip4 (dst),
3192 &ah->ip4_over_ethernet[1].ip4, 4);
3196 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
3199 ip = (ip6_header_t *) (eh + 1);
3201 if (IP_PROTOCOL_ICMP6 == ip->protocol)
3203 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3204 ndh = ip6_next_header (ip);
3205 if (ndh->icmp.type == ICMP6_neighbor_solicitation)
3207 opt = (void *) (ndh + 1);
3208 if ((opt->header.type !=
3209 ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
3210 || (opt->header.n_data_u64s != 1))
3211 return; /* source link layer address option not present */
3213 gid_address_type (dst) = GID_ADDR_NDP;
3214 gid_address_ndp_bd (dst) =
3215 lisp_get_bd_from_buffer_eth (b);
3216 ip_address_set (&gid_address_arp_ndp_ip (dst),
3217 &ndh->target_address, IP6);
3223 gid_address_type (src) = GID_ADDR_MAC;
3224 gid_address_type (dst) = GID_ADDR_MAC;
3225 mac_copy (&gid_address_mac (src), eh->src_address);
3226 mac_copy (&gid_address_mac (dst), eh->dst_address);
3229 vni = lisp_get_vni_from_buffer_eth (lcm, b);
3231 gid_address_vni (dst) = vni;
3232 gid_address_vni (src) = vni;
3235 else if (LISP_AFI_LCAF == type)
3238 eh = vlib_buffer_get_current (b);
3240 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
3242 nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
3243 u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
3244 u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
3245 gid_address_nsh_spi (dst) = spi;
3246 gid_address_nsh_si (dst) = si;
3248 gid_address_type (dst) = GID_ADDR_NSH;
3254 lisp_cp_lookup_inline (vlib_main_t * vm,
3255 vlib_node_runtime_t * node,
3256 vlib_frame_t * from_frame, int overlay)
3258 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3259 u32 *from, *to_next, di, si;
3260 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3262 uword n_left_from, n_left_to_next;
3263 vnet_main_t *vnm = vnet_get_main ();
3265 from = vlib_frame_vector_args (from_frame);
3266 n_left_from = from_frame->n_vectors;
3267 next_index = node->cached_next_index;
3269 while (n_left_from > 0)
3271 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
3273 while (n_left_from > 0 && n_left_to_next > 0)
3275 u32 pi0, sw_if_index0, next0;
3278 gid_address_t src, dst;
3279 ethernet_arp_header_t *arp0;
3280 ethernet_header_t *eth0;
3281 vnet_hw_interface_t *hw_if0;
3282 ethernet_header_t *eh0;
3283 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3291 n_left_to_next -= 1;
3293 b0 = vlib_get_buffer (vm, pi0);
3295 /* src/dst eid pair */
3296 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
3298 if (gid_address_type (&dst) == GID_ADDR_ARP)
3300 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3301 if (GID_LOOKUP_MISS_L2 == mac0)
3304 /* send ARP reply */
3305 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3306 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3308 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3310 eth0 = vlib_buffer_get_current (b0);
3311 arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
3313 arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
3314 arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
3315 clib_memcpy (arp0->ip4_over_ethernet[0].ethernet,
3317 clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
3318 &gid_address_arp_ip4 (&dst), 4);
3320 /* Hardware must be ethernet-like. */
3321 ASSERT (vec_len (hw_if0->hw_address) == 6);
3323 clib_memcpy (eth0->dst_address, eth0->src_address, 6);
3324 clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
3326 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
3327 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3330 else if (gid_address_type (&dst) == GID_ADDR_NDP)
3332 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3333 if (GID_LOOKUP_MISS_L2 == mac0)
3336 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3337 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3339 eh0 = vlib_buffer_get_current (b0);
3340 ip0 = (ip6_header_t *) (eh0 + 1);
3341 ndh = ip6_next_header (ip0);
3343 ip0->dst_address = ip0->src_address;
3344 ip0->src_address = ndh->target_address;
3345 ip0->hop_limit = 255;
3346 opt = (void *) (ndh + 1);
3348 ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
3349 clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
3350 ndh->icmp.type = ICMP6_neighbor_advertisement;
3351 ndh->advertisement_flags = clib_host_to_net_u32
3352 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
3353 ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
3354 ndh->icmp.checksum = 0;
3355 ndh->icmp.checksum =
3356 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
3358 clib_memcpy (eh0->dst_address, eh0->src_address, 6);
3359 clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
3362 [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
3363 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3367 /* if we have remote mapping for destination already in map-chache
3368 add forwarding tunnel directly. If not send a map-request */
3369 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
3373 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
3374 /* send a map-request also in case of negative mapping entry
3375 with corresponding action */
3376 if (m->action == LISP_SEND_MAP_REQUEST)
3378 /* send map-request */
3379 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3380 0 /* is_resend */ );
3384 if (GID_ADDR_NSH != gid_address_type (&dst))
3386 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
3390 si = lcm->nsh_map_index;
3394 dp_add_fwd_entry_from_mt (si, di);
3400 /* send map-request */
3401 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3402 0 /* is_resend */ );
3406 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
3407 next0 = LISP_CP_LOOKUP_NEXT_DROP;
3409 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3411 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
3414 memset (tr, 0, sizeof (*tr));
3415 gid_address_copy (&tr->dst_eid, &dst);
3416 ip_address_copy (&tr->map_resolver_ip,
3417 &lcm->active_map_resolver);
3419 gid_address_free (&dst);
3420 gid_address_free (&src);
3421 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3423 n_left_to_next, pi0, next0);
3426 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
3428 return from_frame->n_vectors;
3432 lisp_cp_lookup_ip4 (vlib_main_t * vm,
3433 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3435 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
3439 lisp_cp_lookup_ip6 (vlib_main_t * vm,
3440 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3442 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
3446 lisp_cp_lookup_l2 (vlib_main_t * vm,
3447 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3449 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
3453 lisp_cp_lookup_nsh (vlib_main_t * vm,
3454 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3456 /* TODO decide if NSH should be propagated as LCAF or not */
3457 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
3461 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
3462 .function = lisp_cp_lookup_ip4,
3463 .name = "lisp-cp-lookup-ip4",
3464 .vector_size = sizeof (u32),
3465 .format_trace = format_lisp_cp_lookup_trace,
3466 .type = VLIB_NODE_TYPE_INTERNAL,
3468 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3469 .error_strings = lisp_cp_lookup_error_strings,
3471 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3474 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3475 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3481 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
3482 .function = lisp_cp_lookup_ip6,
3483 .name = "lisp-cp-lookup-ip6",
3484 .vector_size = sizeof (u32),
3485 .format_trace = format_lisp_cp_lookup_trace,
3486 .type = VLIB_NODE_TYPE_INTERNAL,
3488 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3489 .error_strings = lisp_cp_lookup_error_strings,
3491 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3494 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3495 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3501 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
3502 .function = lisp_cp_lookup_l2,
3503 .name = "lisp-cp-lookup-l2",
3504 .vector_size = sizeof (u32),
3505 .format_trace = format_lisp_cp_lookup_trace,
3506 .type = VLIB_NODE_TYPE_INTERNAL,
3508 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3509 .error_strings = lisp_cp_lookup_error_strings,
3511 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3514 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3515 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3521 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
3522 .function = lisp_cp_lookup_nsh,
3523 .name = "lisp-cp-lookup-nsh",
3524 .vector_size = sizeof (u32),
3525 .format_trace = format_lisp_cp_lookup_trace,
3526 .type = VLIB_NODE_TYPE_INTERNAL,
3528 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3529 .error_strings = lisp_cp_lookup_error_strings,
3531 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3534 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3535 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3540 /* lisp_cp_input statistics */
3541 #define foreach_lisp_cp_input_error \
3543 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
3544 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
3545 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
3546 _(MAP_REPLIES_RECEIVED, "map-replies received")
3548 static char *lisp_cp_input_error_strings[] = {
3549 #define _(sym,string) string,
3550 foreach_lisp_cp_input_error
3556 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
3557 foreach_lisp_cp_input_error
3559 LISP_CP_INPUT_N_ERROR,
3560 } lisp_cp_input_error_t;
3564 gid_address_t dst_eid;
3565 ip4_address_t map_resolver_ip;
3566 } lisp_cp_input_trace_t;
3569 format_lisp_cp_input_trace (u8 * s, va_list * args)
3571 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
3572 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
3573 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
3574 va_arg (*args, lisp_cp_input_trace_t *);
3576 s = format (s, "LISP-CP-INPUT: TODO");
3581 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3584 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3585 memset (adj_args, 0, sizeof (adj_args[0]));
3587 m = pool_elt_at_index (lcm->mapping_pool, mi);
3589 gid_address_copy (&adj_args->reid, &m->eid);
3590 adj_args->is_add = 0;
3591 if (vnet_lisp_add_del_adjacency (adj_args))
3592 clib_warning ("failed to del adjacency!");
3594 vnet_lisp_del_mapping (&m->eid, NULL);
3595 mapping_delete_timer (lcm, mi);
3599 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
3600 f64 expiration_time)
3603 u64 now = clib_cpu_time_now ();
3604 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
3605 u64 exp_clock_time = now + expiration_time * cpu_cps;
3607 m = pool_elt_at_index (lcm->mapping_pool, mi);
3610 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
3614 process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3617 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
3618 mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
3624 if (m->delete_after_expiration)
3626 remove_expired_mapping (lcm, mi);
3630 fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
3634 fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
3636 memset (a, 0, sizeof (*a));
3637 a->rmt_eid = fe->reid;
3639 a->lcl_eid = fe->leid;
3640 a->vni = gid_address_vni (&fe->reid);
3642 rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
3646 if (m->almost_expired)
3648 m->almost_expired = 0; /* reset flag */
3651 if (m->packets != c.packets)
3653 /* mapping is in use, re-fetch */
3654 map_request_args_t mr_args;
3655 memset (&mr_args, 0, sizeof (mr_args));
3656 mr_args.seid = fe->leid;
3657 mr_args.deid = fe->reid;
3659 send_map_request_thread_fn (&mr_args);
3662 remove_expired_mapping (lcm, mi);
3665 remove_expired_mapping (lcm, mi);
3669 m->almost_expired = 1;
3670 mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
3674 m->packets = c.packets;
3676 m->delete_after_expiration = 1;
3681 map_records_arg_free (map_records_arg_t * a)
3683 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3685 vec_foreach (m, a->mappings)
3687 vec_free (m->locators);
3688 gid_address_free (&m->eid);
3690 pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
3694 process_map_reply (map_records_arg_t * a)
3697 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3698 u32 dst_map_index = 0;
3699 pending_map_request_t *pmr;
3704 if (a->is_rloc_probe)
3707 /* Check pending requests table and nonce */
3708 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3711 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3714 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3716 vec_foreach (m, a->mappings)
3718 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
3719 memset (m_args, 0, sizeof (m_args[0]));
3720 gid_address_copy (&m_args->eid, &m->eid);
3721 m_args->action = m->action;
3722 m_args->authoritative = m->authoritative;
3723 m_args->ttl = m->ttl;
3724 m_args->is_static = 0;
3726 /* insert/update mappings cache */
3727 vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
3729 if (dst_map_index == (u32) ~ 0)
3734 /* try to program forwarding only if mapping saved or updated */
3735 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3736 memset (adj_args, 0, sizeof (adj_args[0]));
3738 gid_address_copy (&adj_args->leid, &pmr->src);
3739 gid_address_copy (&adj_args->reid, &m->eid);
3740 adj_args->is_add = 1;
3742 if (vnet_lisp_add_del_adjacency (adj_args))
3743 clib_warning ("failed to add adjacency!");
3746 if ((u32) ~ 0 != m->ttl)
3747 mapping_start_expiration_timer (lcm, dst_map_index, MAPPING_TIMEOUT);
3750 /* remove pending map request entry */
3753 clib_fifo_foreach (noncep, pmr->nonces, ({
3754 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3758 clib_fifo_free (pmr->nonces);
3759 pool_put (lcm->pending_map_requests_pool, pmr);
3767 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3768 lisp_key_type_t key_id, u8 * key)
3774 auth_data_len = auth_data_len_by_key_id (key_id);
3775 if ((u16) ~ 0 == auth_data_len)
3777 clib_warning ("invalid length for key_id %d!", key_id);
3781 /* save auth data */
3782 vec_validate (auth_data, auth_data_len - 1);
3783 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3785 /* clear auth data */
3786 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3788 /* get hash of the message */
3789 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3790 (unsigned char *) h, msg_len, NULL, NULL);
3792 result = memcmp (code, auth_data, auth_data_len);
3794 vec_free (auth_data);
3800 process_map_notify (map_records_arg_t * a)
3802 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3805 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3808 clib_warning ("No pending map-register entry with nonce %lu!",
3814 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
3815 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3817 /* reset map-notify counter */
3818 lcm->expired_map_registers = 0;
3822 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3826 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3829 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3833 return pool_elt_at_index (lcm->mapping_pool, mi);
3837 * When map-notify is received it is necessary that all EIDs in the record
3838 * list share common key. The key is then used to verify authentication
3839 * data in map-notify message.
3842 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3843 u32 key_id, u8 ** key_out)
3845 u32 i, len = vec_len (maps);
3848 /* get key of the first mapping */
3849 m = get_mapping (lcm, &maps[0].eid);
3853 key_out[0] = m->key;
3855 for (i = 1; i < len; i++)
3857 m = get_mapping (lcm, &maps[i].eid);
3861 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3863 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3871 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3873 locator_t *locators = 0;
3879 memset (&m, 0, sizeof (m));
3881 /* parse record eid */
3882 for (i = 0; i < count; i++)
3885 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3888 clib_warning ("Failed to parse mapping record!");
3889 vec_foreach (loc, locators) locator_free (loc);
3890 vec_free (locators);
3894 m.locators = locators;
3895 gid_address_copy (&m.eid, &deid);
3896 vec_add1 (a->mappings, m);
3902 static map_records_arg_t *
3903 map_record_args_get ()
3905 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3906 map_records_arg_t *rec;
3910 pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
3912 map_records_arg_free (rec);
3916 pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
3920 static map_records_arg_t *
3921 parse_map_notify (vlib_buffer_t * b)
3924 map_notify_hdr_t *mnotif_hdr;
3925 lisp_key_type_t key_id;
3926 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3929 u16 auth_data_len = 0;
3931 map_records_arg_t *a;
3933 a = map_record_args_get ();
3934 memset (a, 0, sizeof (*a));
3935 mnotif_hdr = vlib_buffer_get_current (b);
3936 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3937 memset (&deid, 0, sizeof (deid));
3939 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3940 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3941 auth_data_len = auth_data_len_by_key_id (key_id);
3943 /* advance buffer by authentication data */
3944 vlib_buffer_pull (b, auth_data_len);
3946 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3947 rc = parse_map_records (b, a, record_count);
3950 map_records_arg_free (a);
3954 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3957 map_records_arg_free (a);
3961 /* verify authentication data */
3962 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
3963 - (u8 *) mnotif_hdr, key_id, key))
3965 clib_warning ("Map-notify auth data verification failed for nonce "
3966 "0x%lx!", a->nonce);
3967 map_records_arg_free (a);
3973 static vlib_buffer_t *
3974 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
3975 ip_address_t * dst, u64 nonce, u8 probe_bit,
3976 mapping_t * records, u16 dst_port, u32 * bi_res)
3980 vlib_main_t *vm = lcm->vlib_main;
3982 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
3984 clib_warning ("Can't allocate buffer for Map-Register!");
3988 b = vlib_get_buffer (vm, bi);
3990 /* leave some space for the encap headers */
3991 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
3993 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
3995 /* push outer ip header */
3996 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
4003 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
4004 u8 probe_bit, u64 nonce, u16 dst_port,
4005 ip_address_t * probed_loc)
4011 u32 next_index, *to_next;
4012 mapping_t *records = 0, *m;
4014 m = pool_elt_at_index (lcm->mapping_pool, mi);
4018 vec_add1 (records, m[0]);
4019 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
4020 memset (&src, 0, sizeof (src));
4022 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
4024 clib_warning ("can't find inteface address for %U", format_ip_address,
4029 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
4033 free_map_register_records (records);
4035 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
4036 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
4037 ip4_lookup_node.index : ip6_lookup_node.index;
4039 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
4041 /* Enqueue the packet */
4042 to_next = vlib_frame_vector_args (f);
4045 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
4050 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
4052 const i32 start = vnet_buffer (b)->l3_hdr_offset;
4053 if (start < 0 && start < -sizeof (b->pre_data))
4059 *ip_hdr = b->data + start;
4060 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
4065 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
4066 lisp_cp_main_t * lcm, vlib_buffer_t * b)
4069 ip_address_t *dst_loc = 0, probed_loc, src_loc;
4071 map_request_hdr_t *mreq_hdr;
4072 gid_address_t src, dst;
4074 u32 i, len = 0, rloc_probe_recv = 0;
4075 gid_address_t *itr_rlocs = 0;
4077 mreq_hdr = vlib_buffer_get_current (b);
4078 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
4081 ("Only SMR Map-Requests and RLOC probe supported for now!");
4085 vlib_buffer_pull (b, sizeof (*mreq_hdr));
4086 nonce = MREQ_NONCE (mreq_hdr);
4089 len = lisp_msg_parse_addr (b, &src);
4093 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
4094 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
4098 /* parse eid records and send SMR-invoked map-requests */
4099 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
4101 memset (&dst, 0, sizeof (dst));
4102 len = lisp_msg_parse_eid_rec (b, &dst);
4105 clib_warning ("Can't parse map-request EID-record");
4109 if (MREQ_SMR (mreq_hdr))
4111 /* send SMR-invoked map-requests */
4112 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
4114 else if (MREQ_RLOC_PROBE (mreq_hdr))
4116 find_ip_header (b, &ip_hdr);
4119 clib_warning ("Cannot find the IP header!");
4123 memset (&m, 0, sizeof (m));
4124 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
4126 // TODO: select best locator; for now use the first one
4127 dst_loc = &gid_address_ip (&itr_rlocs[0]);
4129 /* get src/dst IP addresses */
4130 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
4132 // TODO get source port from buffer
4133 u16 src_port = LISP_CONTROL_PORT;
4135 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
4136 src_port, &probed_loc);
4141 vlib_node_increment_counter (vm, node->node_index,
4142 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
4144 vec_free (itr_rlocs);
4148 parse_map_reply (vlib_buffer_t * b)
4155 map_reply_hdr_t *mrep_hdr;
4156 map_records_arg_t *a;
4158 a = map_record_args_get ();
4159 memset (a, 0, sizeof (*a));
4161 locator_t *locators;
4163 mrep_hdr = vlib_buffer_get_current (b);
4164 a->nonce = MREP_NONCE (mrep_hdr);
4165 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
4166 if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
4171 vlib_buffer_pull (b, sizeof (*mrep_hdr));
4173 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
4175 memset (&m, 0, sizeof (m));
4177 h = vlib_buffer_get_current (b);
4179 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
4180 m.action = MAP_REC_ACTION (h);
4181 m.authoritative = MAP_REC_AUTH (h);
4183 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
4186 clib_warning ("Failed to parse mapping record!");
4187 map_records_arg_free (a);
4191 m.locators = locators;
4192 gid_address_copy (&m.eid, &deid);
4193 vec_add1 (a->mappings, m);
4199 queue_map_reply_for_processing (map_records_arg_t * a)
4201 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
4205 queue_map_notify_for_processing (map_records_arg_t * a)
4207 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
4211 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
4212 vlib_frame_t * from_frame)
4214 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
4215 map_notifies_recv = 0;
4216 lisp_msg_type_e type;
4217 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4218 map_records_arg_t *a;
4220 from = vlib_frame_vector_args (from_frame);
4221 n_left_from = from_frame->n_vectors;
4224 while (n_left_from > 0)
4226 u32 n_left_to_next_drop;
4228 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4229 to_next_drop, n_left_to_next_drop);
4230 while (n_left_from > 0 && n_left_to_next_drop > 0)
4238 to_next_drop[0] = bi0;
4240 n_left_to_next_drop -= 1;
4242 b0 = vlib_get_buffer (vm, bi0);
4244 type = lisp_msg_type (vlib_buffer_get_current (b0));
4247 case LISP_MAP_REPLY:
4248 a = parse_map_reply (b0);
4251 if (a->is_rloc_probe)
4252 rloc_probe_rep_recv++;
4253 queue_map_reply_for_processing (a);
4256 case LISP_MAP_REQUEST:
4257 process_map_request (vm, node, lcm, b0);
4259 case LISP_MAP_NOTIFY:
4260 a = parse_map_notify (b0);
4263 map_notifies_recv++;
4264 queue_map_notify_for_processing (a);
4268 clib_warning ("Unsupported LISP message type %d", type);
4272 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
4274 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
4280 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4281 n_left_to_next_drop);
4283 vlib_node_increment_counter (vm, node->node_index,
4284 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
4285 rloc_probe_rep_recv);
4286 vlib_node_increment_counter (vm, node->node_index,
4287 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
4289 return from_frame->n_vectors;
4293 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
4294 .function = lisp_cp_input,
4295 .name = "lisp-cp-input",
4296 .vector_size = sizeof (u32),
4297 .format_trace = format_lisp_cp_input_trace,
4298 .type = VLIB_NODE_TYPE_INTERNAL,
4300 .n_errors = LISP_CP_INPUT_N_ERROR,
4301 .error_strings = lisp_cp_input_error_strings,
4303 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
4306 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
4312 lisp_cp_init (vlib_main_t * vm)
4314 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4315 clib_error_t *error = 0;
4316 vlib_thread_main_t *vtm = vlib_get_thread_main ();
4319 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
4322 lcm->im4 = &ip4_main;
4323 lcm->im6 = &ip6_main;
4324 lcm->vlib_main = vm;
4325 lcm->vnet_main = vnet_get_main ();
4326 lcm->mreq_itr_rlocs = ~0;
4329 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
4330 memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
4332 gid_dictionary_init (&lcm->mapping_index_by_gid);
4333 lcm->do_map_resolver_election = 1;
4334 lcm->do_map_server_election = 1;
4335 lcm->map_request_mode = MR_MODE_DST_ONLY;
4337 num_threads = 1 /* main thread */ + vtm->n_threads;
4338 vec_validate (lcm->map_records_args_pool, num_threads - 1);
4340 /* default vrf mapped to vni 0 */
4341 hash_set (lcm->table_id_by_vni, 0, 0);
4342 hash_set (lcm->vni_by_table_id, 0, 0);
4344 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
4345 lisp_cp_input_node.index, 1 /* is_ip4 */ );
4346 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
4347 lisp_cp_input_node.index, 0 /* is_ip4 */ );
4349 u64 now = clib_cpu_time_now ();
4350 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
4351 lcm->nsh_map_index = ~0;
4352 lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
4353 lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
4354 lcm->expired_map_registers = 0;
4355 lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
4360 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
4361 lisp_api_stats_t * stat, lisp_stats_key_t * key,
4365 vlib_combined_counter_main_t *cm = &lgm->counters;
4366 lisp_gpe_fwd_entry_key_t fwd_key;
4367 const lisp_gpe_tunnel_t *lgt;
4370 memset (stat, 0, sizeof (*stat));
4371 memset (&fwd_key, 0, sizeof (fwd_key));
4373 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
4376 gid_to_dp_address (&fe->reid, &stat->deid);
4377 gid_to_dp_address (&fe->leid, &stat->seid);
4378 stat->vni = gid_address_vni (&fe->reid);
4380 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
4381 stat->loc_rloc = lgt->key->lcl;
4382 stat->rmt_rloc = lgt->key->rmt;
4384 vlib_get_combined_counter (cm, stats_index, &v);
4390 vnet_lisp_get_stats (void)
4392 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
4393 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4394 lisp_api_stats_t *stats = 0, stat;
4395 lisp_stats_key_t *key;
4399 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
4401 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
4402 vec_add1 (stats, stat);
4410 send_map_request_thread_fn (void *arg)
4412 map_request_args_t *a = arg;
4413 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4416 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4418 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4424 queue_map_request (gid_address_t * seid, gid_address_t * deid,
4425 u8 smr_invoked, u8 is_resend)
4427 map_request_args_t a;
4429 a.is_resend = is_resend;
4430 gid_address_copy (&a.seid, seid);
4431 gid_address_copy (&a.deid, deid);
4432 a.smr_invoked = smr_invoked;
4434 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
4435 (u8 *) & a, sizeof (a));
4440 * Take an action with a pending map request depending on expiration time
4441 * and re-try counters.
4444 update_pending_request (pending_map_request_t * r, f64 dt)
4446 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4449 if (r->time_to_expire - dt < 0)
4450 /* it's time to decide what to do with this pending request */
4452 if (r->retries_num >= NUMBER_OF_RETRIES)
4453 /* too many retries -> assume current map resolver is not available */
4455 mr = get_map_resolver (&lcm->active_map_resolver);
4458 clib_warning ("Map resolver %U not found - probably deleted "
4459 "by the user recently.", format_ip_address,
4460 &lcm->active_map_resolver);
4464 clib_warning ("map resolver %U is unreachable, ignoring",
4465 format_ip_address, &lcm->active_map_resolver);
4467 /* mark current map resolver unavailable so it won't be
4468 * selected next time */
4470 mr->last_update = vlib_time_now (lcm->vlib_main);
4473 reset_pending_mr_counters (r);
4474 elect_map_resolver (lcm);
4476 /* try to find a next eligible map resolver and re-send */
4477 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4483 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4486 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
4490 r->time_to_expire -= dt;
4494 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
4497 pending_map_request_t *pmr;
4498 u32 *to_be_removed = 0, *pmr_index;
4501 pool_foreach (pmr, lcm->pending_map_requests_pool,
4503 if (pmr->to_be_removed)
4505 clib_fifo_foreach (nonce, pmr->nonces, ({
4506 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
4509 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
4514 vec_foreach (pmr_index, to_be_removed)
4515 pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
4517 vec_free (to_be_removed);
4521 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
4523 static f64 time_left = RLOC_PROBING_INTERVAL;
4525 if (!lcm->is_enabled || !lcm->rloc_probing)
4531 time_left = RLOC_PROBING_INTERVAL;
4532 send_rloc_probes (lcm);
4537 update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
4539 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4543 r->time_to_expire -= dt;
4545 if (r->time_to_expire < 0)
4547 lcm->expired_map_registers++;
4549 if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
4551 ms = get_map_server (&lcm->active_map_server);
4554 clib_warning ("Map server %U not found - probably deleted "
4555 "by the user recently.", format_ip_address,
4556 &lcm->active_map_server);
4560 clib_warning ("map server %U is unreachable, ignoring",
4561 format_ip_address, &lcm->active_map_server);
4563 /* mark current map server unavailable so it won't be
4564 * elected next time */
4566 ms->last_update = vlib_time_now (lcm->vlib_main);
4569 elect_map_server (lcm);
4571 /* indication for deleting all pending map registers */
4573 lcm->expired_map_registers = 0;
4578 /* delete pending map register */
4586 update_map_register (lisp_cp_main_t * lcm, f64 dt)
4588 u32 *to_be_removed = 0, *pmr_index;
4589 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
4590 static u64 mreg_sent_counter = 0;
4592 pending_map_register_t *pmr;
4595 if (!lcm->is_enabled || !lcm->map_registering)
4599 pool_foreach (pmr, lcm->pending_map_registers_pool,
4601 if (!update_pending_map_register (pmr, dt, &del_all))
4605 vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
4612 /* delete all pending map register messages so they won't
4613 * trigger another map server election.. */
4614 pool_free (lcm->pending_map_registers_pool);
4615 hash_free (lcm->map_register_messages_by_nonce);
4617 /* ..and trigger registration against next map server (if any) */
4622 vec_foreach (pmr_index, to_be_removed)
4623 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4626 vec_free (to_be_removed);
4631 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
4632 time_left = MAP_REGISTER_INTERVAL;
4635 mreg_sent_counter++;
4636 time_left = QUICK_MAP_REGISTER_INTERVAL;
4638 send_map_register (lcm, 1 /* want map notify */ );
4643 send_map_resolver_service (vlib_main_t * vm,
4644 vlib_node_runtime_t * rt, vlib_frame_t * f)
4648 pending_map_request_t *pmr;
4649 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4653 vlib_process_wait_for_event_or_clock (vm, period);
4655 /* currently no signals are expected - just wait for clock */
4656 (void) vlib_process_get_events (vm, 0);
4659 pool_foreach (pmr, lcm->pending_map_requests_pool,
4661 if (!pmr->to_be_removed)
4662 update_pending_request (pmr, period);
4666 remove_dead_pending_map_requests (lcm);
4668 update_map_register (lcm, period);
4669 update_rloc_probing (lcm, period);
4671 u64 now = clib_cpu_time_now ();
4673 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
4674 if (vec_len (expired) > 0)
4677 vec_foreach (mi, expired)
4679 process_expired_mapping (lcm, mi[0]);
4681 _vec_len (expired) = 0;
4690 vnet_lisp_stats_enable_disable (u8 enable)
4692 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4694 if (vnet_lisp_enable_disable_status () == 0)
4695 return VNET_API_ERROR_LISP_DISABLED;
4698 lcm->flags |= LISP_FLAG_STATS_ENABLED;
4700 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
4706 vnet_lisp_stats_enable_disable_state (void)
4708 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4710 if (vnet_lisp_enable_disable_status () == 0)
4711 return VNET_API_ERROR_LISP_DISABLED;
4713 return lcm->flags & LISP_FLAG_STATS_ENABLED;
4717 VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
4718 .function = send_map_resolver_service,
4719 .type = VLIB_NODE_TYPE_PROCESS,
4720 .name = "lisp-retry-service",
4721 .process_log2_n_stack_bytes = 16,
4726 vnet_lisp_set_transport_protocol (u8 protocol)
4728 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4730 if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
4731 protocol > LISP_TRANSPORT_PROTOCOL_API)
4732 return VNET_API_ERROR_INVALID_ARGUMENT;
4734 lcm->transport_protocol = protocol;
4738 lisp_transport_protocol_t
4739 vnet_lisp_get_transport_protocol (void)
4741 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4742 return lcm->transport_protocol;
4745 VLIB_INIT_FUNCTION (lisp_cp_init);
4748 * fd.io coding-style-patch-verification: ON
4751 * eval: (c-set-style "gnu")