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 bd = (u32) kvp->key[0];
912 hash_set (ht[0], bd, 0);
916 vnet_lisp_l2_arp_bds_get (void)
918 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
921 gid_dict_foreach_l2_arp_entry (&lcm->mapping_index_by_gid,
922 add_l2_arp_bd, &bds);
930 } lisp_add_l2_arp_args_t;
933 add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
935 lisp_add_l2_arp_args_t *a = arg;
936 lisp_api_l2_arp_entry_t **vector = a->vector, e;
938 if ((u32) kvp->key[0] == a->bd)
940 mac_copy (e.mac, (void *) &kvp->value);
941 e.ip4 = (u32) kvp->key[1];
942 vec_add1 (vector[0], e);
946 lisp_api_l2_arp_entry_t *
947 vnet_lisp_l2_arp_entries_get_by_bd (u32 bd)
949 lisp_api_l2_arp_entry_t *entries = 0;
950 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
951 lisp_add_l2_arp_args_t a;
956 gid_dict_foreach_l2_arp_entry (&lcm->mapping_index_by_gid,
957 add_l2_arp_entry, &a);
962 vnet_lisp_add_del_l2_arp_entry (gid_address_t * key, u8 * mac, u8 is_add)
964 if (vnet_lisp_enable_disable_status () == 0)
966 clib_warning ("LISP is disabled!");
967 return VNET_API_ERROR_LISP_DISABLED;
970 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
973 u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key);
976 if (res != GID_LOOKUP_MISS_L2)
978 clib_warning ("Entry %U exists in DB!", format_gid_address, key);
979 return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
981 u64 val = mac_to_u64 (mac);
982 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val,
987 if (res == GID_LOOKUP_MISS_L2)
989 clib_warning ("ONE ARP entry %U not found - cannot delete!",
990 format_gid_address, key);
993 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0,
1001 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
1003 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1004 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
1006 if (vnet_lisp_enable_disable_status () == 0)
1008 clib_warning ("LISP is disabled!");
1009 return VNET_API_ERROR_LISP_DISABLED;
1012 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
1013 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
1015 if (!is_l2 && (vni == 0 || dp_id == 0))
1017 clib_warning ("can't add/del default vni-vrf mapping!");
1021 dp_idp = hash_get (dp_table_by_vni[0], vni);
1022 vnip = hash_get (vni_by_dp_table[0], dp_id);
1028 clib_warning ("vni %d or vrf %d already used in vrf/vni "
1029 "mapping!", vni, dp_id);
1032 hash_set (dp_table_by_vni[0], vni, dp_id);
1033 hash_set (vni_by_dp_table[0], dp_id, vni);
1035 /* create dp iface */
1036 dp_add_del_iface (lcm, vni, is_l2, 1);
1040 if (!dp_idp || !vnip)
1042 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
1043 "mapping!", vni, dp_id);
1046 /* remove dp iface */
1047 dp_add_del_iface (lcm, vni, is_l2, 0);
1049 hash_unset (dp_table_by_vni[0], vni);
1050 hash_unset (vni_by_dp_table[0], dp_id);
1056 /* return 0 if the two locator sets are identical 1 otherwise */
1058 compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
1059 locator_t * new_locators)
1062 locator_t *old_loc, *new_loc;
1064 if (vec_len (old_ls_indexes) != vec_len (new_locators))
1067 for (i = 0; i < vec_len (new_locators); i++)
1069 old_li = vec_elt (old_ls_indexes, i);
1070 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
1072 new_loc = vec_elt_at_index (new_locators, i);
1074 if (locator_cmp (old_loc, new_loc))
1084 gid_address_t *eids_to_be_deleted;
1085 } remove_mapping_args_t;
1088 * Callback invoked when a sub-prefix is found
1091 remove_mapping_if_needed (u32 mi, void *arg)
1094 remove_mapping_args_t *a = arg;
1095 lisp_cp_main_t *lcm = a->lcm;
1099 m = pool_elt_at_index (lcm->mapping_pool, mi);
1103 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
1107 if (0 != vec_len (ls->locator_indices))
1112 if (0 == vec_len (ls->locator_indices))
1117 vec_add1 (a->eids_to_be_deleted, m->eid);
1121 * This function searches map cache and looks for IP prefixes that are subset
1122 * of the provided one. If such prefix is found depending on 'is_negative'
1125 * 1) if is_negative is true and found prefix points to positive mapping,
1126 * then the mapping is removed
1127 * 2) if is_negative is false and found prefix points to negative mapping,
1128 * then the mapping is removed
1131 remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
1135 remove_mapping_args_t a;
1137 memset (&a, 0, sizeof (a));
1139 /* do this only in src/dst mode ... */
1140 if (MR_MODE_SRC_DST != lcm->map_request_mode)
1143 /* ... and only for IP prefix */
1144 if (GID_ADDR_SRC_DST != gid_address_type (eid)
1145 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
1148 a.is_negative = is_negative;
1151 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
1152 remove_mapping_if_needed, &a);
1154 vec_foreach (e, a.eids_to_be_deleted)
1156 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
1158 memset (adj_args, 0, sizeof (adj_args[0]));
1159 gid_address_copy (&adj_args->reid, e);
1160 adj_args->is_add = 0;
1161 if (vnet_lisp_add_del_adjacency (adj_args))
1162 clib_warning ("failed to del adjacency!");
1164 vnet_lisp_del_mapping (e, NULL);
1167 vec_free (a.eids_to_be_deleted);
1171 mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
1173 timing_wheel_delete (&lcm->wheel, mi);
1177 is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
1179 fib_node_index_t fei;
1180 fib_prefix_t prefix;
1181 fib_entry_flag_t flags;
1183 ip_address_to_fib_prefix (addr, &prefix);
1185 fei = fib_table_lookup (0, &prefix);
1186 flags = fib_entry_get_flags (fei);
1187 return (FIB_ENTRY_FLAG_LOCAL & flags);
1191 * Adds/updates mapping. Does not program forwarding.
1193 * @param a parameters of the new mapping
1194 * @param rlocs vector of remote locators
1195 * @param res_map_index index of the newly created mapping
1196 * @param locators_changed indicator if locators were updated in the mapping
1197 * @return return code
1200 vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
1202 u32 * res_map_index, u8 * is_updated)
1204 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1205 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1206 u32 mi, ls_index = 0, dst_map_index;
1210 if (vnet_lisp_enable_disable_status () == 0)
1212 clib_warning ("LISP is disabled!");
1213 return VNET_API_ERROR_LISP_DISABLED;
1217 res_map_index[0] = ~0;
1221 memset (ls_args, 0, sizeof (ls_args[0]));
1223 ls_args->locators = rlocs;
1224 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
1225 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1227 /* check if none of the locators match localy configured address */
1228 vec_foreach (loc, rlocs)
1230 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1231 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1233 clib_warning ("RLOC %U matches a local address!",
1234 format_gid_address, &loc->address);
1235 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1239 /* overwrite: if mapping already exists, decide if locators should be
1240 * updated and be done */
1241 if (old_map && gid_address_cmp (&old_map->eid, &a->eid) == 0)
1243 if (!a->is_static && (old_map->is_static || old_map->local))
1245 /* do not overwrite local or static remote mappings */
1246 clib_warning ("mapping %U rejected due to collision with local "
1247 "or static remote mapping!", format_gid_address,
1252 locator_set_t *old_ls;
1254 /* update mapping attributes */
1255 old_map->action = a->action;
1256 if (old_map->action != a->action && NULL != is_updated)
1259 old_map->authoritative = a->authoritative;
1260 old_map->ttl = a->ttl;
1262 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1263 old_map->locator_set_index);
1264 if (compare_locators (lcm, old_ls->locator_indices, ls_args->locators))
1266 /* set locator-set index to overwrite */
1267 ls_args->is_add = 1;
1268 ls_args->index = old_map->locator_set_index;
1269 vnet_lisp_add_del_locator_set (ls_args, 0);
1274 res_map_index[0] = mi;
1279 remove_overlapping_sub_prefixes (lcm, &a->eid, 0 == ls_args->locators);
1281 ls_args->is_add = 1;
1282 ls_args->index = ~0;
1284 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1288 a->locator_set_index = ls_index;
1289 vnet_lisp_map_cache_add_del (a, &dst_map_index);
1292 res_map_index[0] = dst_map_index;
1300 * Removes a mapping. Does not program forwarding.
1302 * @param eid end-host indetifier
1303 * @param res_map_index index of the removed mapping
1304 * @return return code
1307 vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index)
1309 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1310 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1311 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1315 memset (m_args, 0, sizeof (m_args[0]));
1317 res_map_index[0] = ~0;
1319 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1320 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1322 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1324 clib_warning ("cannot delete mapping for eid %U",
1325 format_gid_address, eid);
1330 gid_address_copy (&m_args->eid, eid);
1331 m_args->locator_set_index = old_map->locator_set_index;
1333 /* delete mapping associated from map-cache */
1334 vnet_lisp_map_cache_add_del (m_args, 0);
1336 ls_args->is_add = 0;
1337 ls_args->index = old_map->locator_set_index;
1339 /* delete locator set */
1340 vnet_lisp_add_del_locator_set (ls_args, 0);
1342 /* delete timer associated to the mapping if any */
1343 if (old_map->timer_set)
1344 mapping_delete_timer (lcm, mi);
1346 /* return old mapping index */
1348 res_map_index[0] = mi;
1355 vnet_lisp_clear_all_remote_adjacencies (void)
1358 u32 mi, *map_indices = 0, *map_indexp;
1359 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1360 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1361 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1364 pool_foreach_index (mi, lcm->mapping_pool,
1366 vec_add1 (map_indices, mi);
1370 vec_foreach (map_indexp, map_indices)
1372 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1375 dp_del_fwd_entry (lcm, map_indexp[0]);
1377 dm_args->is_add = 0;
1378 gid_address_copy (&dm_args->eid, &map->eid);
1379 dm_args->locator_set_index = map->locator_set_index;
1381 /* delete mapping associated to fwd entry */
1382 vnet_lisp_map_cache_add_del (dm_args, 0);
1386 ls->index = map->locator_set_index;
1387 /* delete locator set */
1388 rv = vnet_lisp_add_del_locator_set (ls, 0);
1396 vec_free (map_indices);
1401 * Adds adjacency or removes forwarding entry associated to remote mapping.
1402 * Note that adjacencies are not stored, they only result in forwarding entries
1406 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1408 lisp_cp_main_t *lcm = &lisp_control_main;
1409 u32 local_mi, remote_mi = ~0;
1411 if (vnet_lisp_enable_disable_status () == 0)
1413 clib_warning ("LISP is disabled!");
1414 return VNET_API_ERROR_LISP_DISABLED;
1417 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1418 &a->reid, &a->leid);
1419 if (GID_LOOKUP_MISS == remote_mi)
1421 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1422 format_gid_address, &a->reid);
1429 /* check if source eid has an associated mapping. If pitr mode is on,
1430 * just use the pitr's mapping */
1432 local_mi = lcm->pitr_map_index;
1435 if (gid_address_type (&a->reid) == GID_ADDR_NSH)
1437 if (lcm->nsh_map_index == ~0)
1438 local_mi = GID_LOOKUP_MISS;
1440 local_mi = lcm->nsh_map_index;
1444 local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1449 if (GID_LOOKUP_MISS == local_mi)
1451 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1452 format_gid_address, &a->leid);
1457 /* update forwarding */
1458 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1461 dp_del_fwd_entry (lcm, remote_mi);
1467 vnet_lisp_set_map_request_mode (u8 mode)
1469 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1471 if (vnet_lisp_enable_disable_status () == 0)
1473 clib_warning ("LISP is disabled!");
1474 return VNET_API_ERROR_LISP_DISABLED;
1477 if (mode >= _MR_MODE_MAX)
1479 clib_warning ("Invalid LISP map request mode %d!", mode);
1480 return VNET_API_ERROR_INVALID_ARGUMENT;
1483 lcm->map_request_mode = mode;
1488 vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
1490 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1491 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
1492 u32 locator_set_index = ~0;
1496 if (vnet_lisp_enable_disable_status () == 0)
1498 clib_warning ("LISP is disabled!");
1499 return VNET_API_ERROR_LISP_DISABLED;
1504 if (lcm->nsh_map_index == (u32) ~ 0)
1506 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1509 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1512 locator_set_index = p[0];
1514 pool_get (lcm->mapping_pool, m);
1515 memset (m, 0, sizeof *m);
1516 m->locator_set_index = locator_set_index;
1519 lcm->nsh_map_index = m - lcm->mapping_pool;
1521 if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
1527 if (lcm->nsh_map_index != (u32) ~ 0)
1529 /* remove NSH mapping */
1530 pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
1531 lcm->nsh_map_index = ~0;
1532 vnet_lisp_gpe_del_nsh_iface (lgm);
1539 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1541 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1542 u32 locator_set_index = ~0;
1546 if (vnet_lisp_enable_disable_status () == 0)
1548 clib_warning ("LISP is disabled!");
1549 return VNET_API_ERROR_LISP_DISABLED;
1552 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1555 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1558 locator_set_index = p[0];
1562 pool_get (lcm->mapping_pool, m);
1563 m->locator_set_index = locator_set_index;
1566 lcm->pitr_map_index = m - lcm->mapping_pool;
1568 /* enable pitr mode */
1573 /* remove pitr mapping */
1574 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1576 /* disable pitr mode */
1583 vnet_lisp_map_register_fallback_threshold_set (u32 value)
1585 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1588 return VNET_API_ERROR_INVALID_ARGUMENT;
1591 lcm->max_expired_map_registers = value;
1596 vnet_lisp_map_register_fallback_threshold_get (void)
1598 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1599 return lcm->max_expired_map_registers;
1603 * Configure Proxy-ETR
1605 * @param ip PETR's IP address
1606 * @param is_add Flag that indicates if this is an addition or removal
1608 * return 0 on success
1611 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1613 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1616 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1619 if (vnet_lisp_enable_disable_status () == 0)
1621 clib_warning ("LISP is disabled!");
1622 return VNET_API_ERROR_LISP_DISABLED;
1625 memset (ls_args, 0, sizeof (*ls_args));
1629 /* Create dummy petr locator-set */
1630 memset (&loc, 0, sizeof (loc));
1631 gid_address_from_ip (&loc.address, ip);
1633 loc.state = loc.weight = 1;
1636 ls_args->is_add = 1;
1637 ls_args->index = ~0;
1638 vec_add1 (ls_args->locators, loc);
1639 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1641 /* Add petr mapping */
1642 pool_get (lcm->mapping_pool, m);
1643 m->locator_set_index = ls_index;
1644 lcm->petr_map_index = m - lcm->mapping_pool;
1646 /* Enable use-petr */
1647 lcm->flags |= LISP_FLAG_USE_PETR;
1651 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1653 /* Remove petr locator */
1654 ls_args->is_add = 0;
1655 ls_args->index = m->locator_set_index;
1656 vnet_lisp_add_del_locator_set (ls_args, 0);
1658 /* Remove petr mapping */
1659 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1661 /* Disable use-petr */
1662 lcm->flags &= ~LISP_FLAG_USE_PETR;
1667 /* cleans locator to locator-set data and removes locators not part of
1668 * any locator-set */
1670 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1672 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1673 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1674 for (i = 0; i < vec_len (ls->locator_indices); i++)
1676 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1677 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1679 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1681 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1682 if (ls_indexp[0] == lsi)
1686 /* delete index for removed locator-set */
1687 vec_del1 (ls_indexes[0], j);
1689 /* delete locator if it's part of no locator-set */
1690 if (vec_len (ls_indexes[0]) == 0)
1692 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1693 vec_add1 (to_be_deleted, i);
1699 for (i = 0; i < vec_len (to_be_deleted); i++)
1701 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1702 vec_del1 (ls->locator_indices, loc_indexp[0]);
1704 vec_free (to_be_deleted);
1708 static inline uword *
1709 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1711 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1716 /* find locator-set */
1719 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1730 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1736 ASSERT (ls != NULL);
1737 ASSERT (loc != NULL);
1739 vec_foreach (locit, ls->locator_indices)
1741 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1742 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1743 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1745 clib_warning ("Duplicate locator");
1746 return VNET_API_ERROR_VALUE_EXIST;
1754 update_adjacencies_by_map_index (lisp_cp_main_t * lcm, u8 is_local,
1755 u32 mapping_index, u8 remove_only)
1759 vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
1761 map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
1764 pool_foreach(fwd, lcm->fwd_entry_pool,
1766 if ((is_local && 0 == gid_address_cmp (&map->eid, &fwd->leid)) ||
1767 (!is_local && 0 == gid_address_cmp (&map->eid, &fwd->reid)))
1770 gid_address_copy (&a->leid, &fwd->leid);
1771 gid_address_copy (&a->reid, &fwd->reid);
1773 vnet_lisp_add_del_adjacency (a);
1778 vnet_lisp_add_del_adjacency (a);
1786 update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm, u8 is_local,
1787 u32 ls_index, u8 remove_only)
1792 if (vec_len (lcm->locator_set_to_eids) <= ls_index)
1795 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
1797 for (i = 0; i < vec_len (eid_indexes[0]); i++)
1799 map_indexp = vec_elt_at_index (eid_indexes[0], i);
1800 update_adjacencies_by_map_index (lcm, is_local, map_indexp[0],
1806 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1807 u32 ls_index, u32 loc_id)
1809 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1810 u32 **ls_indexes = NULL;
1812 ASSERT (ls != NULL);
1813 ASSERT (locit != NULL);
1815 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1816 pool_put_index (lcm->locator_pool, locit[0]);
1817 vec_del1 (ls->locator_indices, loc_id);
1818 vec_del1 (ls_indexes[0], ls_index);
1822 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1823 locator_set_t * ls, u32 * ls_result)
1825 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1826 locator_t *loc = NULL, *itloc = NULL;
1827 uword _p = (u32) ~ 0, *p = &_p;
1828 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1834 if (vnet_lisp_enable_disable_status () == 0)
1836 clib_warning ("LISP is disabled!");
1837 return VNET_API_ERROR_LISP_DISABLED;
1840 p = get_locator_set_index (a, p);
1843 clib_warning ("locator-set %v doesn't exist", a->name);
1844 return VNET_API_ERROR_INVALID_ARGUMENT;
1849 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1852 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1854 return VNET_API_ERROR_INVALID_ARGUMENT;
1861 ls_result[0] = p[0];
1863 /* allocate locators */
1864 vec_foreach (itloc, a->locators)
1866 ret = is_locator_in_locator_set (lcm, ls, itloc);
1872 pool_get (lcm->locator_pool, loc);
1874 loc_index = loc - lcm->locator_pool;
1876 vec_add1 (ls->locator_indices, loc_index);
1878 vec_validate (lcm->locator_to_locator_sets, loc_index);
1879 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1881 vec_add1 (ls_indexes[0], p[0]);
1889 vec_foreach (itloc, a->locators)
1893 vec_foreach (locit, ls->locator_indices)
1895 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1897 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1900 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1902 if (0 == loc->local &&
1903 !gid_address_cmp (&loc->address, &itloc->address))
1906 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1911 /* update fwd entries using this locator in DP */
1912 update_fwd_entries_by_locator_set (lcm, loc->local, ls_index,
1913 vec_len (ls->locator_indices)
1926 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
1929 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1931 uword _p = (u32) ~ 0, *p = &_p;
1936 if (vnet_lisp_enable_disable_status () == 0)
1938 clib_warning ("LISP is disabled!");
1939 return VNET_API_ERROR_LISP_DISABLED;
1944 p = get_locator_set_index (a, p);
1947 if (p && p[0] != (u32) ~ 0)
1949 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1952 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1957 /* clean locator to locator-set vectors and remove locators if
1958 * they're not part of another locator-set */
1959 clean_locator_to_locator_set (lcm, p[0]);
1961 /* remove locator indices from locator set */
1962 vec_free (ls->locator_indices);
1967 ls_result[0] = p[0];
1969 /* new locator-set */
1972 pool_get (lcm->locator_set_pool, ls);
1973 memset (ls, 0, sizeof (*ls));
1974 ls_index = ls - lcm->locator_set_pool;
1978 ls->name = vec_dup (a->name);
1980 if (!lcm->locator_set_index_by_name)
1981 lcm->locator_set_index_by_name = hash_create_vec (
1989 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
1992 /* mark as local locator-set */
1993 vec_add1 (lcm->local_locator_set_indexes, ls_index);
1995 ls->local = a->local;
1997 ls_result[0] = ls_index;
2000 ret = vnet_lisp_add_del_locator (a, ls, NULL);
2008 p = get_locator_set_index (a, p);
2011 clib_warning ("locator-set %v doesn't exists", a->name);
2015 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2018 clib_warning ("locator-set with index %d doesn't exists", p[0]);
2022 if (lcm->mreq_itr_rlocs == p[0])
2024 clib_warning ("Can't delete the locator-set used to constrain "
2025 "the itr-rlocs in map-requests!");
2029 if (vec_len (lcm->locator_set_to_eids) != 0)
2031 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
2032 if (vec_len (eid_indexes[0]) != 0)
2035 ("Can't delete a locator that supports a mapping!");
2040 /* clean locator to locator-sets data */
2041 clean_locator_to_locator_set (lcm, p[0]);
2047 vec_foreach_index (it, lcm->local_locator_set_indexes)
2049 lsi = vec_elt (lcm->local_locator_set_indexes, it);
2052 vec_del1 (lcm->local_locator_set_indexes, it);
2056 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
2058 vec_free (ls->name);
2059 vec_free (ls->locator_indices);
2060 pool_put (lcm->locator_set_pool, ls);
2066 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
2068 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2070 lcm->rloc_probing = is_enable;
2075 vnet_lisp_map_register_enable_disable (u8 is_enable)
2077 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2079 lcm->map_registering = is_enable;
2084 vnet_lisp_enable_disable (u8 is_enable)
2086 u32 vni, dp_table, **rmts;
2087 clib_error_t *error = 0;
2088 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2089 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
2091 a->is_en = is_enable;
2092 error = vnet_lisp_gpe_enable_disable (a);
2095 return clib_error_return (0, "failed to %s data-plane!",
2096 a->is_en ? "enable" : "disable");
2101 /* enable all l2 and l3 ifaces */
2104 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
2105 dp_add_del_iface(lcm, vni, 0, 1);
2107 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
2108 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
2114 /* clear interface table */
2115 hash_free (lcm->fwd_entry_by_mapping_index);
2116 pool_free (lcm->fwd_entry_pool);
2117 /* Clear state tracking rmt-lcl fwd entries */
2119 pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
2124 hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
2125 pool_free (lcm->lcl_to_rmt_adjacencies);
2128 /* update global flag */
2129 lcm->is_enabled = is_enable;
2135 vnet_lisp_enable_disable_status (void)
2137 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2138 return lcm->is_enabled;
2142 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
2144 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2146 lisp_msmr_t _mr, *mr = &_mr;
2148 if (vnet_lisp_enable_disable_status () == 0)
2150 clib_warning ("LISP is disabled!");
2151 return VNET_API_ERROR_LISP_DISABLED;
2157 if (get_map_resolver (&a->address))
2159 clib_warning ("map-resolver %U already exists!", format_ip_address,
2164 memset (mr, 0, sizeof (*mr));
2165 ip_address_copy (&mr->address, &a->address);
2166 vec_add1 (lcm->map_resolvers, *mr);
2168 if (vec_len (lcm->map_resolvers) == 1)
2169 lcm->do_map_resolver_election = 1;
2173 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
2175 mr = vec_elt_at_index (lcm->map_resolvers, i);
2176 if (!ip_address_cmp (&mr->address, &a->address))
2178 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
2179 lcm->do_map_resolver_election = 1;
2181 vec_del1 (lcm->map_resolvers, i);
2190 vnet_lisp_map_register_set_ttl (u32 ttl)
2192 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2193 lcm->map_register_ttl = ttl;
2198 vnet_lisp_map_register_get_ttl (void)
2200 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2201 return lcm->map_register_ttl;
2205 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
2207 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2210 if (vnet_lisp_enable_disable_status () == 0)
2212 clib_warning ("LISP is disabled!");
2213 return VNET_API_ERROR_LISP_DISABLED;
2218 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
2221 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
2222 return VNET_API_ERROR_INVALID_ARGUMENT;
2225 lcm->mreq_itr_rlocs = p[0];
2229 lcm->mreq_itr_rlocs = ~0;
2235 /* Statistics (not really errors) */
2236 #define foreach_lisp_cp_lookup_error \
2238 _(MAP_REQUESTS_SENT, "map-request sent") \
2239 _(ARP_REPLY_TX, "ARP replies sent")
2241 static char *lisp_cp_lookup_error_strings[] = {
2242 #define _(sym,string) string,
2243 foreach_lisp_cp_lookup_error
2249 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
2250 foreach_lisp_cp_lookup_error
2252 LISP_CP_LOOKUP_N_ERROR,
2253 } lisp_cp_lookup_error_t;
2257 LISP_CP_LOOKUP_NEXT_DROP,
2258 LISP_CP_LOOKUP_NEXT_ARP_REPLY_TX,
2259 LISP_CP_LOOKUP_N_NEXT,
2260 } lisp_cp_lookup_next_t;
2264 gid_address_t dst_eid;
2265 ip_address_t map_resolver_ip;
2266 } lisp_cp_lookup_trace_t;
2269 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
2271 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2272 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2273 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
2275 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
2276 format_ip_address, &t->map_resolver_ip, format_gid_address,
2282 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
2283 ip_address_t * sloc)
2288 if (vec_len (lcm->map_resolvers) == 0)
2290 clib_warning ("No map-resolver configured");
2294 /* find the first mr ip we have a route to and the ip of the
2295 * iface that has a route to it */
2296 vec_foreach (mrit, lcm->map_resolvers)
2299 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
2301 ip_address_copy (mr_ip, a);
2303 /* also update globals */
2308 clib_warning ("Can't find map-resolver and local interface ip!");
2312 static gid_address_t *
2313 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
2319 ip_interface_address_t *ia = 0;
2320 gid_address_t gid_data, *gid = &gid_data;
2321 gid_address_t *rlocs = 0;
2322 ip_prefix_t *ippref = &gid_address_ippref (gid);
2323 ip_address_t *rloc = &ip_prefix_addr (ippref);
2325 memset (gid, 0, sizeof (gid[0]));
2326 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
2327 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
2329 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
2330 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
2332 /* Add ipv4 locators first TODO sort them */
2335 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2336 loc->sw_if_index, 1 /* unnumbered */,
2338 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
2339 ip_address_set (rloc, addr, IP4);
2340 ip_prefix_len (ippref) = 32;
2341 ip_prefix_normalize (ippref);
2342 vec_add1 (rlocs, gid[0]);
2345 /* Add ipv6 locators */
2346 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2347 loc->sw_if_index, 1 /* unnumbered */,
2349 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
2350 ip_address_set (rloc, addr, IP6);
2351 ip_prefix_len (ippref) = 128;
2352 ip_prefix_normalize (ippref);
2353 vec_add1 (rlocs, gid[0]);
2361 static vlib_buffer_t *
2362 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
2363 ip_address_t * sloc, ip_address_t * rloc,
2364 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
2368 vlib_main_t *vm = lcm->vlib_main;
2370 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2372 clib_warning ("Can't allocate buffer for Map-Request!");
2376 b = vlib_get_buffer (vm, bi);
2378 /* leave some space for the encap headers */
2379 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2382 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2383 1 /* rloc probe */ , nonce_res);
2385 /* push outer ip header */
2386 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2394 static vlib_buffer_t *
2395 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2396 gid_address_t * seid, gid_address_t * deid,
2397 locator_set_t * loc_set, ip_address_t * mr_ip,
2398 ip_address_t * sloc, u8 is_smr_invoked,
2399 u64 * nonce_res, u32 * bi_res)
2403 gid_address_t *rlocs = 0;
2404 vlib_main_t *vm = lcm->vlib_main;
2406 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2408 clib_warning ("Can't allocate buffer for Map-Request!");
2412 b = vlib_get_buffer (vm, bi);
2415 /* leave some space for the encap headers */
2416 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2419 rlocs = build_itr_rloc_list (lcm, loc_set);
2421 if (MR_MODE_SRC_DST == lcm->map_request_mode
2422 && GID_ADDR_SRC_DST != gid_address_type (deid))
2425 memset (&sd, 0, sizeof (sd));
2426 build_src_dst (&sd, seid, deid);
2427 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2428 0 /* rloc probe */ , nonce_res);
2433 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2434 0 /* rloc probe */ , nonce_res);
2437 /* push ecm: udp-ip-lisp */
2438 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2440 /* push outer ip header */
2441 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2451 reset_pending_mr_counters (pending_map_request_t * r)
2453 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2457 #define foreach_msmr \
2463 elect_map_ ## name (lisp_cp_main_t * lcm) \
2466 vec_foreach (mr, lcm->map_ ## name ## s) \
2470 ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
2471 lcm->do_map_ ## name ## _election = 0; \
2480 free_map_register_records (mapping_t * maps)
2483 vec_foreach (map, maps) vec_free (map->locators);
2489 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2490 ip_address_t * probed_loc)
2493 locator_t *loc, new;
2494 ip_interface_address_t *ia = 0;
2496 ip_address_t *new_ip = &gid_address_ip (&new.address);
2499 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2501 vec_foreach (li, ls->locator_indices)
2503 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2508 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2509 loc->sw_if_index, 1 /* unnumbered */,
2511 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2513 ip_address_set (new_ip, addr, IP4);
2516 /* Add ipv6 locators */
2517 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2518 loc->sw_if_index, 1 /* unnumbered */,
2520 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2522 ip_address_set (new_ip, addr, IP6);
2526 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2529 vec_add1 (m->locators, new);
2534 build_map_register_record_list (lisp_cp_main_t * lcm)
2536 mapping_t *recs = 0, rec, *m;
2539 pool_foreach(m, lcm->mapping_pool,
2541 /* for now build only local mappings */
2546 add_locators (lcm, &rec, m->locator_set_index, NULL);
2547 vec_add1 (recs, rec);
2555 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2556 lisp_key_type_t key_id, u8 * key,
2557 u16 auth_data_len, u32 msg_len)
2559 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2560 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2562 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2563 (unsigned char *) map_reg_hdr, msg_len, NULL,
2565 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2570 static vlib_buffer_t *
2571 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2572 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2573 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2578 u32 bi, auth_data_len = 0, msg_len = 0;
2579 vlib_main_t *vm = lcm->vlib_main;
2581 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2583 clib_warning ("Can't allocate buffer for Map-Register!");
2587 b = vlib_get_buffer (vm, bi);
2589 /* leave some space for the encap headers */
2590 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2592 auth_data_len = auth_data_len_by_key_id (key_id);
2593 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2594 auth_data_len, nonce_res,
2597 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2600 /* push outer ip header */
2601 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2610 get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
2613 while (lcm->do_map_ ## name ## _election \
2614 | (0 == ip_fib_get_first_egress_ip_for_dst \
2615 (lcm, &lcm->active_map_ ##name, ip))) \
2617 if (0 == elect_map_ ## name (lcm)) \
2618 /* all map resolvers/servers are down */ \
2620 /* restart MR/MS checking by marking all of them up */ \
2621 vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
2630 /* CP output statistics */
2631 #define foreach_lisp_cp_output_error \
2632 _(MAP_REGISTERS_SENT, "map-registers sent") \
2633 _(RLOC_PROBES_SENT, "rloc-probes sent")
2634 static char *lisp_cp_output_error_strings[] = {
2635 #define _(sym,string) string,
2636 foreach_lisp_cp_output_error
2642 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2643 foreach_lisp_cp_output_error
2645 LISP_CP_OUTPUT_N_ERROR,
2646 } lisp_cp_output_error_t;
2649 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2650 vlib_frame_t * from_frame)
2655 /* dummy node used only for statistics */
2657 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2658 .function = lisp_cp_output,
2659 .name = "lisp-cp-output",
2660 .vector_size = sizeof (u32),
2661 .format_trace = format_lisp_cp_input_trace,
2662 .type = VLIB_NODE_TYPE_INTERNAL,
2664 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2665 .error_strings = lisp_cp_output_error_strings,
2667 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2670 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2676 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2677 u32 local_locator_set_index, ip_address_t * sloc,
2678 ip_address_t * rloc)
2685 u32 next_index, *to_next;
2686 gid_address_t *itr_rlocs;
2688 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2689 itr_rlocs = build_itr_rloc_list (lcm, ls);
2691 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2692 vec_free (itr_rlocs);
2696 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2698 next_index = (ip_addr_version (rloc) == IP4) ?
2699 ip4_lookup_node.index : ip6_lookup_node.index;
2701 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2703 /* Enqueue the packet */
2704 to_next = vlib_frame_vector_args (f);
2707 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2713 send_rloc_probes (lisp_cp_main_t * lcm)
2719 u32 si, rloc_probes_sent = 0;
2722 pool_foreach (e, lcm->fwd_entry_pool,
2724 if (vec_len (e->locator_pairs) == 0)
2727 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2730 clib_warning ("internal error: cannot find local eid %U in "
2731 "map-cache!", format_gid_address, &e->leid);
2734 lm = pool_elt_at_index (lcm->mapping_pool, si);
2736 /* get the best (lowest) priority */
2737 lprio = e->locator_pairs[0].priority;
2739 /* send rloc-probe for pair(s) with the best remote locator priority */
2740 vec_foreach (lp, e->locator_pairs)
2742 if (lp->priority != lprio)
2745 /* get first remote locator */
2746 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2753 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2754 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2760 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2762 pending_map_register_t *pmr;
2763 u32 bi, map_registers_sent = 0;
2768 u32 next_index, *to_next;
2769 mapping_t *records, *r, *group, *k;
2771 if (get_egress_map_server_ip (lcm, &sloc) < 0)
2774 records = build_map_register_record_list (lcm);
2778 vec_foreach (r, records)
2781 u8 key_id = r->key_id;
2784 continue; /* no secret key -> map-register cannot be sent */
2787 vec_add1 (group, r[0]);
2789 /* group mappings that share common key */
2790 for (k = r + 1; k < vec_end (records); k++)
2792 if (k->key_id != r->key_id)
2795 if (vec_is_equal (k->key, r->key))
2797 vec_add1 (group, k[0]);
2798 k->key = 0; /* don't process this mapping again */
2802 b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
2803 want_map_notif, group, key_id, key, &bi);
2808 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2810 next_index = (ip_addr_version (&lcm->active_map_server) == IP4) ?
2811 ip4_lookup_node.index : ip6_lookup_node.index;
2813 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2815 /* Enqueue the packet */
2816 to_next = vlib_frame_vector_args (f);
2819 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2820 map_registers_sent++;
2822 pool_get (lcm->pending_map_registers_pool, pmr);
2823 memset (pmr, 0, sizeof (*pmr));
2824 pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
2825 hash_set (lcm->map_register_messages_by_nonce, nonce,
2826 pmr - lcm->pending_map_registers_pool);
2828 free_map_register_records (records);
2830 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2831 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
2832 map_registers_sent);
2837 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
2838 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
2840 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
2841 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
2844 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
2845 gid_address_t * seid, gid_address_t * deid,
2846 u8 is_smr_invoked, u8 is_resend)
2848 u32 next_index, bi = 0, *to_next, map_index;
2852 locator_set_t *loc_set;
2854 pending_map_request_t *pmr, *duplicate_pmr = 0;
2858 /* if there is already a pending request remember it */
2861 pool_foreach(pmr, lcm->pending_map_requests_pool,
2863 if (!gid_address_cmp (&pmr->src, seid)
2864 && !gid_address_cmp (&pmr->dst, deid))
2866 duplicate_pmr = pmr;
2872 if (!is_resend && duplicate_pmr)
2874 /* don't send the request if there is a pending map request already */
2878 /* get locator-set for seid */
2879 if (!lcm->lisp_pitr && gid_address_type (deid) != GID_ADDR_NSH)
2881 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
2882 if (map_index == ~0)
2884 clib_warning ("No local mapping found in eid-table for %U!",
2885 format_gid_address, seid);
2889 map = pool_elt_at_index (lcm->mapping_pool, map_index);
2894 ("Mapping found for src eid %U is not marked as local!",
2895 format_gid_address, seid);
2898 ls_index = map->locator_set_index;
2904 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
2905 ls_index = map->locator_set_index;
2909 if (lcm->nsh_map_index == (u32) ~ 0)
2911 clib_warning ("No locator-set defined for NSH!");
2916 map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
2917 ls_index = map->locator_set_index;
2922 /* overwrite locator set if map-request itr-rlocs configured */
2923 if (~0 != lcm->mreq_itr_rlocs)
2925 ls_index = lcm->mreq_itr_rlocs;
2928 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
2930 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
2933 duplicate_pmr->to_be_removed = 1;
2937 /* build the encapsulated map request */
2938 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
2939 &lcm->active_map_resolver,
2940 &sloc, is_smr_invoked, &nonce, &bi);
2945 /* set fib index to default and lookup node */
2946 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2947 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2948 ip4_lookup_node.index : ip6_lookup_node.index;
2950 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2952 /* Enqueue the packet */
2953 to_next = vlib_frame_vector_args (f);
2956 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2959 /* if there is a pending request already update it */
2961 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
2963 /* remove the oldest nonce */
2964 u64 CLIB_UNUSED (tmp), *nonce_del;
2965 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
2966 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
2967 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
2970 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
2971 hash_set (lcm->pending_map_requests_by_nonce, nonce,
2972 duplicate_pmr - lcm->pending_map_requests_pool);
2976 /* add map-request to pending requests table */
2977 pool_get (lcm->pending_map_requests_pool, pmr);
2978 memset (pmr, 0, sizeof (*pmr));
2979 gid_address_copy (&pmr->src, seid);
2980 gid_address_copy (&pmr->dst, deid);
2981 clib_fifo_add1 (pmr->nonces, nonce);
2982 pmr->is_smr_invoked = is_smr_invoked;
2983 reset_pending_mr_counters (pmr);
2984 hash_set (lcm->pending_map_requests_by_nonce, nonce,
2985 pmr - lcm->pending_map_requests_pool);
2992 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
2994 ip4_header_t *ip4 = hdr;
2997 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
2999 ip_address_set (src, &ip4->src_address, IP4);
3000 ip_address_set (dst, &ip4->dst_address, IP4);
3005 ip_address_set (src, &ip6->src_address, IP6);
3006 ip_address_set (dst, &ip6->dst_address, IP6);
3011 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3015 u32 vni = ~0, table_id = ~0;
3017 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
3018 IP4 ? FIB_PROTOCOL_IP4 :
3024 vnip = hash_get (lcm->vni_by_table_id, table_id);
3028 clib_warning ("vrf %d is not mapped to any vni!", table_id);
3034 lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
3038 l2input_main_t *l2im = &l2input_main;
3039 l2_input_config_t *config;
3040 l2_bridge_domain_t *bd_config;
3042 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
3043 config = vec_elt_at_index (l2im->configs, sw_if_index0);
3044 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
3046 return bd_config->bd_id;
3050 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
3054 u32 bd = lisp_get_bd_from_buffer_eth (b);
3056 vnip = hash_get (lcm->vni_by_bd_id, bd);
3060 clib_warning ("bridge domain %d is not mapped to any vni!", bd);
3066 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3067 gid_address_t * src, gid_address_t * dst,
3070 ethernet_header_t *eh;
3073 memset (src, 0, sizeof (*src));
3074 memset (dst, 0, sizeof (*dst));
3076 gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
3077 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3079 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
3082 u8 version, preflen;
3084 gid_address_type (src) = GID_ADDR_IP_PREFIX;
3085 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
3087 ip = vlib_buffer_get_current (b);
3088 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
3090 version = gid_address_ip_version (src);
3091 preflen = ip_address_max_len (version);
3092 gid_address_ippref_len (src) = preflen;
3093 gid_address_ippref_len (dst) = preflen;
3095 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
3096 gid_address_vni (dst) = vni;
3097 gid_address_vni (src) = vni;
3099 else if (LISP_AFI_MAC == type)
3101 ethernet_arp_header_t *ah;
3103 eh = vlib_buffer_get_current (b);
3105 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
3107 ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
3108 if (clib_net_to_host_u16 (ah->opcode)
3109 != ETHERNET_ARP_OPCODE_request)
3112 gid_address_type (dst) = GID_ADDR_ARP;
3113 gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
3114 clib_memcpy (&gid_address_arp_ip4 (dst),
3115 &ah->ip4_over_ethernet[1].ip4, 4);
3119 gid_address_type (src) = GID_ADDR_MAC;
3120 gid_address_type (dst) = GID_ADDR_MAC;
3121 mac_copy (&gid_address_mac (src), eh->src_address);
3122 mac_copy (&gid_address_mac (dst), eh->dst_address);
3125 vni = lisp_get_vni_from_buffer_eth (lcm, b);
3127 gid_address_vni (dst) = vni;
3128 gid_address_vni (src) = vni;
3131 else if (LISP_AFI_LCAF == type)
3134 eh = vlib_buffer_get_current (b);
3136 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
3138 nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
3139 u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
3140 u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
3141 gid_address_nsh_spi (dst) = spi;
3142 gid_address_nsh_si (dst) = si;
3144 gid_address_type (dst) = GID_ADDR_NSH;
3150 lisp_cp_lookup_inline (vlib_main_t * vm,
3151 vlib_node_runtime_t * node,
3152 vlib_frame_t * from_frame, int overlay)
3154 u32 *from, *to_next, di, si;
3155 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3156 u32 pkts_mapped = 0, next_index;
3157 uword n_left_from, n_left_to_next;
3158 vnet_main_t *vnm = vnet_get_main ();
3160 from = vlib_frame_vector_args (from_frame);
3161 n_left_from = from_frame->n_vectors;
3162 next_index = node->cached_next_index;
3164 while (n_left_from > 0)
3166 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
3168 while (n_left_from > 0 && n_left_to_next > 0)
3170 u32 pi0, sw_if_index0, next0;
3173 gid_address_t src, dst;
3174 ethernet_arp_header_t *arp0;
3175 ethernet_header_t *eth0;
3176 vnet_hw_interface_t *hw_if0;
3183 n_left_to_next -= 1;
3185 b0 = vlib_get_buffer (vm, pi0);
3187 /* src/dst eid pair */
3188 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
3190 if (gid_address_type (&dst) == GID_ADDR_ARP)
3192 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3193 if (GID_LOOKUP_MISS_L2 != mac0)
3195 /* send ARP reply */
3197 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3198 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3200 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3202 eth0 = vlib_buffer_get_current (b0);
3203 arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
3206 clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
3207 arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
3208 clib_memcpy (arp0->ip4_over_ethernet[0].ethernet,
3210 clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
3211 &gid_address_arp_ip4 (&dst), 4);
3213 /* Hardware must be ethernet-like. */
3214 ASSERT (vec_len (hw_if0->hw_address) == 6);
3216 clib_memcpy (eth0->dst_address, eth0->src_address, 6);
3217 clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
3219 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
3220 next0 = LISP_CP_LOOKUP_NEXT_ARP_REPLY_TX;
3221 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3223 n_left_to_next, pi0,
3230 /* if we have remote mapping for destination already in map-chache
3231 add forwarding tunnel directly. If not send a map-request */
3232 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
3236 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
3237 /* send a map-request also in case of negative mapping entry
3238 with corresponding action */
3239 if (m->action == LISP_SEND_MAP_REQUEST)
3241 /* send map-request */
3242 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3243 0 /* is_resend */ );
3248 if (GID_ADDR_NSH != gid_address_type (&dst))
3250 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
3254 si = lcm->nsh_map_index;
3258 dp_add_fwd_entry_from_mt (si, di);
3264 /* send map-request */
3265 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3266 0 /* is_resend */ );
3271 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
3272 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3274 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
3277 memset (tr, 0, sizeof (*tr));
3278 gid_address_copy (&tr->dst_eid, &dst);
3279 ip_address_copy (&tr->map_resolver_ip,
3280 &lcm->active_map_resolver);
3282 gid_address_free (&dst);
3283 gid_address_free (&src);
3284 next0 = LISP_CP_LOOKUP_NEXT_DROP;
3285 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3287 n_left_to_next, pi0, next0);
3290 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
3292 vlib_node_increment_counter (vm, node->node_index,
3293 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
3295 return from_frame->n_vectors;
3299 lisp_cp_lookup_ip4 (vlib_main_t * vm,
3300 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3302 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
3306 lisp_cp_lookup_ip6 (vlib_main_t * vm,
3307 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3309 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
3313 lisp_cp_lookup_l2 (vlib_main_t * vm,
3314 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3316 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
3320 lisp_cp_lookup_nsh (vlib_main_t * vm,
3321 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3323 /* TODO decide if NSH should be propagated as LCAF or not */
3324 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
3328 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
3329 .function = lisp_cp_lookup_ip4,
3330 .name = "lisp-cp-lookup-ip4",
3331 .vector_size = sizeof (u32),
3332 .format_trace = format_lisp_cp_lookup_trace,
3333 .type = VLIB_NODE_TYPE_INTERNAL,
3335 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3336 .error_strings = lisp_cp_lookup_error_strings,
3338 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3341 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3342 [LISP_CP_LOOKUP_NEXT_ARP_REPLY_TX] = "interface-output",
3348 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
3349 .function = lisp_cp_lookup_ip6,
3350 .name = "lisp-cp-lookup-ip6",
3351 .vector_size = sizeof (u32),
3352 .format_trace = format_lisp_cp_lookup_trace,
3353 .type = VLIB_NODE_TYPE_INTERNAL,
3355 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3356 .error_strings = lisp_cp_lookup_error_strings,
3358 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3361 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3362 [LISP_CP_LOOKUP_NEXT_ARP_REPLY_TX] = "interface-output",
3368 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
3369 .function = lisp_cp_lookup_l2,
3370 .name = "lisp-cp-lookup-l2",
3371 .vector_size = sizeof (u32),
3372 .format_trace = format_lisp_cp_lookup_trace,
3373 .type = VLIB_NODE_TYPE_INTERNAL,
3375 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3376 .error_strings = lisp_cp_lookup_error_strings,
3378 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3381 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3382 [LISP_CP_LOOKUP_NEXT_ARP_REPLY_TX] = "interface-output",
3388 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
3389 .function = lisp_cp_lookup_nsh,
3390 .name = "lisp-cp-lookup-nsh",
3391 .vector_size = sizeof (u32),
3392 .format_trace = format_lisp_cp_lookup_trace,
3393 .type = VLIB_NODE_TYPE_INTERNAL,
3395 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3396 .error_strings = lisp_cp_lookup_error_strings,
3398 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3401 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3402 [LISP_CP_LOOKUP_NEXT_ARP_REPLY_TX] = "interface-output",
3407 /* lisp_cp_input statistics */
3408 #define foreach_lisp_cp_input_error \
3410 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
3411 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
3412 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
3413 _(MAP_REPLIES_RECEIVED, "map-replies received")
3415 static char *lisp_cp_input_error_strings[] = {
3416 #define _(sym,string) string,
3417 foreach_lisp_cp_input_error
3423 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
3424 foreach_lisp_cp_input_error
3426 LISP_CP_INPUT_N_ERROR,
3427 } lisp_cp_input_error_t;
3431 gid_address_t dst_eid;
3432 ip4_address_t map_resolver_ip;
3433 } lisp_cp_input_trace_t;
3436 format_lisp_cp_input_trace (u8 * s, va_list * args)
3438 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
3439 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
3440 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
3441 va_arg (*args, lisp_cp_input_trace_t *);
3443 s = format (s, "LISP-CP-INPUT: TODO");
3448 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3451 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3452 memset (adj_args, 0, sizeof (adj_args[0]));
3454 m = pool_elt_at_index (lcm->mapping_pool, mi);
3456 gid_address_copy (&adj_args->reid, &m->eid);
3457 adj_args->is_add = 0;
3458 if (vnet_lisp_add_del_adjacency (adj_args))
3459 clib_warning ("failed to del adjacency!");
3461 vnet_lisp_del_mapping (&m->eid, NULL);
3462 mapping_delete_timer (lcm, mi);
3466 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
3467 f64 expiration_time)
3470 u64 now = clib_cpu_time_now ();
3471 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
3472 u64 exp_clock_time = now + expiration_time * cpu_cps;
3474 m = pool_elt_at_index (lcm->mapping_pool, mi);
3477 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
3481 process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3484 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
3485 mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
3491 if (m->delete_after_expiration)
3493 remove_expired_mapping (lcm, mi);
3497 fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
3501 fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
3503 memset (a, 0, sizeof (*a));
3504 a->rmt_eid = fe->reid;
3506 a->lcl_eid = fe->leid;
3507 a->vni = gid_address_vni (&fe->reid);
3509 rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
3513 if (m->almost_expired)
3515 m->almost_expired = 0; /* reset flag */
3518 if (m->packets != c.packets)
3520 /* mapping is in use, re-fetch */
3521 map_request_args_t mr_args;
3522 memset (&mr_args, 0, sizeof (mr_args));
3523 mr_args.seid = fe->leid;
3524 mr_args.deid = fe->reid;
3526 send_map_request_thread_fn (&mr_args);
3529 remove_expired_mapping (lcm, mi);
3532 remove_expired_mapping (lcm, mi);
3536 m->almost_expired = 1;
3537 mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
3541 m->packets = c.packets;
3543 m->delete_after_expiration = 1;
3548 map_records_arg_free (map_records_arg_t * a)
3550 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3552 vec_foreach (m, a->mappings)
3554 vec_free (m->locators);
3555 gid_address_free (&m->eid);
3557 pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
3561 process_map_reply (map_records_arg_t * a)
3564 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3565 u32 dst_map_index = 0;
3566 pending_map_request_t *pmr;
3571 if (a->is_rloc_probe)
3574 /* Check pending requests table and nonce */
3575 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3578 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3581 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3583 vec_foreach (m, a->mappings)
3585 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
3586 memset (m_args, 0, sizeof (m_args[0]));
3587 gid_address_copy (&m_args->eid, &m->eid);
3588 m_args->action = m->action;
3589 m_args->authoritative = m->authoritative;
3590 m_args->ttl = m->ttl;
3591 m_args->is_static = 0;
3593 /* insert/update mappings cache */
3594 vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
3596 if (dst_map_index == (u32) ~ 0)
3601 /* try to program forwarding only if mapping saved or updated */
3602 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3603 memset (adj_args, 0, sizeof (adj_args[0]));
3605 gid_address_copy (&adj_args->leid, &pmr->src);
3606 gid_address_copy (&adj_args->reid, &m->eid);
3607 adj_args->is_add = 1;
3609 if (vnet_lisp_add_del_adjacency (adj_args))
3610 clib_warning ("failed to add adjacency!");
3613 if ((u32) ~ 0 != m->ttl)
3614 mapping_start_expiration_timer (lcm, dst_map_index, MAPPING_TIMEOUT);
3617 /* remove pending map request entry */
3620 clib_fifo_foreach (noncep, pmr->nonces, ({
3621 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3625 clib_fifo_free (pmr->nonces);
3626 pool_put (lcm->pending_map_requests_pool, pmr);
3634 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3635 lisp_key_type_t key_id, u8 * key)
3641 auth_data_len = auth_data_len_by_key_id (key_id);
3642 if ((u16) ~ 0 == auth_data_len)
3644 clib_warning ("invalid length for key_id %d!", key_id);
3648 /* save auth data */
3649 vec_validate (auth_data, auth_data_len - 1);
3650 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3652 /* clear auth data */
3653 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3655 /* get hash of the message */
3656 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3657 (unsigned char *) h, msg_len, NULL, NULL);
3659 result = memcmp (code, auth_data, auth_data_len);
3661 vec_free (auth_data);
3667 process_map_notify (map_records_arg_t * a)
3669 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3672 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3675 clib_warning ("No pending map-register entry with nonce %lu!",
3681 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
3682 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3684 /* reset map-notify counter */
3685 lcm->expired_map_registers = 0;
3689 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3693 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3696 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3700 return pool_elt_at_index (lcm->mapping_pool, mi);
3704 * When map-notify is received it is necessary that all EIDs in the record
3705 * list share common key. The key is then used to verify authentication
3706 * data in map-notify message.
3709 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3710 u32 key_id, u8 ** key_out)
3712 u32 i, len = vec_len (maps);
3715 /* get key of the first mapping */
3716 m = get_mapping (lcm, &maps[0].eid);
3720 key_out[0] = m->key;
3722 for (i = 1; i < len; i++)
3724 m = get_mapping (lcm, &maps[i].eid);
3728 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3730 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3738 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3740 locator_t *locators = 0;
3746 memset (&m, 0, sizeof (m));
3748 /* parse record eid */
3749 for (i = 0; i < count; i++)
3752 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3755 clib_warning ("Failed to parse mapping record!");
3756 vec_foreach (loc, locators) locator_free (loc);
3757 vec_free (locators);
3761 m.locators = locators;
3762 gid_address_copy (&m.eid, &deid);
3763 vec_add1 (a->mappings, m);
3769 static map_records_arg_t *
3770 map_record_args_get ()
3772 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3773 map_records_arg_t *rec;
3777 pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
3779 map_records_arg_free (rec);
3783 pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
3787 static map_records_arg_t *
3788 parse_map_notify (vlib_buffer_t * b)
3791 map_notify_hdr_t *mnotif_hdr;
3792 lisp_key_type_t key_id;
3793 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3796 u16 auth_data_len = 0;
3798 map_records_arg_t *a;
3800 a = map_record_args_get ();
3801 memset (a, 0, sizeof (*a));
3802 mnotif_hdr = vlib_buffer_get_current (b);
3803 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3804 memset (&deid, 0, sizeof (deid));
3806 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3807 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3808 auth_data_len = auth_data_len_by_key_id (key_id);
3810 /* advance buffer by authentication data */
3811 vlib_buffer_pull (b, auth_data_len);
3813 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3814 rc = parse_map_records (b, a, record_count);
3817 map_records_arg_free (a);
3821 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3824 map_records_arg_free (a);
3828 /* verify authentication data */
3829 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
3830 - (u8 *) mnotif_hdr, key_id, key))
3832 clib_warning ("Map-notify auth data verification failed for nonce "
3833 "0x%lx!", a->nonce);
3834 map_records_arg_free (a);
3840 static vlib_buffer_t *
3841 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
3842 ip_address_t * dst, u64 nonce, u8 probe_bit,
3843 mapping_t * records, u16 dst_port, u32 * bi_res)
3847 vlib_main_t *vm = lcm->vlib_main;
3849 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
3851 clib_warning ("Can't allocate buffer for Map-Register!");
3855 b = vlib_get_buffer (vm, bi);
3857 /* leave some space for the encap headers */
3858 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
3860 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
3862 /* push outer ip header */
3863 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
3870 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
3871 u8 probe_bit, u64 nonce, u16 dst_port,
3872 ip_address_t * probed_loc)
3878 u32 next_index, *to_next;
3879 mapping_t *records = 0, *m;
3881 m = pool_elt_at_index (lcm->mapping_pool, mi);
3885 vec_add1 (records, m[0]);
3886 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
3887 memset (&src, 0, sizeof (src));
3889 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
3891 clib_warning ("can't find inteface address for %U", format_ip_address,
3896 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
3900 free_map_register_records (records);
3902 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3903 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3904 ip4_lookup_node.index : ip6_lookup_node.index;
3906 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3908 /* Enqueue the packet */
3909 to_next = vlib_frame_vector_args (f);
3912 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3917 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
3919 const i32 start = vnet_buffer (b)->l3_hdr_offset;
3920 if (start < 0 && start < -sizeof (b->pre_data))
3926 *ip_hdr = b->data + start;
3927 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
3932 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
3933 lisp_cp_main_t * lcm, vlib_buffer_t * b)
3936 ip_address_t *dst_loc = 0, probed_loc, src_loc;
3938 map_request_hdr_t *mreq_hdr;
3939 gid_address_t src, dst;
3941 u32 i, len = 0, rloc_probe_recv = 0;
3942 gid_address_t *itr_rlocs = 0;
3944 mreq_hdr = vlib_buffer_get_current (b);
3945 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
3948 ("Only SMR Map-Requests and RLOC probe supported for now!");
3952 vlib_buffer_pull (b, sizeof (*mreq_hdr));
3953 nonce = MREQ_NONCE (mreq_hdr);
3956 len = lisp_msg_parse_addr (b, &src);
3960 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
3961 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
3965 /* parse eid records and send SMR-invoked map-requests */
3966 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
3968 memset (&dst, 0, sizeof (dst));
3969 len = lisp_msg_parse_eid_rec (b, &dst);
3972 clib_warning ("Can't parse map-request EID-record");
3976 if (MREQ_SMR (mreq_hdr))
3978 /* send SMR-invoked map-requests */
3979 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
3981 else if (MREQ_RLOC_PROBE (mreq_hdr))
3983 find_ip_header (b, &ip_hdr);
3986 clib_warning ("Cannot find the IP header!");
3990 memset (&m, 0, sizeof (m));
3991 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3993 // TODO: select best locator; for now use the first one
3994 dst_loc = &gid_address_ip (&itr_rlocs[0]);
3996 /* get src/dst IP addresses */
3997 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
3999 // TODO get source port from buffer
4000 u16 src_port = LISP_CONTROL_PORT;
4002 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
4003 src_port, &probed_loc);
4008 vlib_node_increment_counter (vm, node->node_index,
4009 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
4011 vec_free (itr_rlocs);
4015 parse_map_reply (vlib_buffer_t * b)
4022 map_reply_hdr_t *mrep_hdr;
4023 map_records_arg_t *a;
4025 a = map_record_args_get ();
4026 memset (a, 0, sizeof (*a));
4028 locator_t *locators;
4030 mrep_hdr = vlib_buffer_get_current (b);
4031 a->nonce = MREP_NONCE (mrep_hdr);
4032 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
4033 if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
4038 vlib_buffer_pull (b, sizeof (*mrep_hdr));
4040 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
4042 memset (&m, 0, sizeof (m));
4044 h = vlib_buffer_get_current (b);
4046 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
4047 m.action = MAP_REC_ACTION (h);
4048 m.authoritative = MAP_REC_AUTH (h);
4050 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
4053 clib_warning ("Failed to parse mapping record!");
4054 map_records_arg_free (a);
4058 m.locators = locators;
4059 gid_address_copy (&m.eid, &deid);
4060 vec_add1 (a->mappings, m);
4066 queue_map_reply_for_processing (map_records_arg_t * a)
4068 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
4072 queue_map_notify_for_processing (map_records_arg_t * a)
4074 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
4078 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
4079 vlib_frame_t * from_frame)
4081 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
4082 map_notifies_recv = 0;
4083 lisp_msg_type_e type;
4084 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4085 map_records_arg_t *a;
4087 from = vlib_frame_vector_args (from_frame);
4088 n_left_from = from_frame->n_vectors;
4091 while (n_left_from > 0)
4093 u32 n_left_to_next_drop;
4095 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4096 to_next_drop, n_left_to_next_drop);
4097 while (n_left_from > 0 && n_left_to_next_drop > 0)
4105 to_next_drop[0] = bi0;
4107 n_left_to_next_drop -= 1;
4109 b0 = vlib_get_buffer (vm, bi0);
4111 type = lisp_msg_type (vlib_buffer_get_current (b0));
4114 case LISP_MAP_REPLY:
4115 a = parse_map_reply (b0);
4118 if (a->is_rloc_probe)
4119 rloc_probe_rep_recv++;
4120 queue_map_reply_for_processing (a);
4123 case LISP_MAP_REQUEST:
4124 process_map_request (vm, node, lcm, b0);
4126 case LISP_MAP_NOTIFY:
4127 a = parse_map_notify (b0);
4130 map_notifies_recv++;
4131 queue_map_notify_for_processing (a);
4135 clib_warning ("Unsupported LISP message type %d", type);
4139 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
4141 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
4147 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4148 n_left_to_next_drop);
4150 vlib_node_increment_counter (vm, node->node_index,
4151 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
4152 rloc_probe_rep_recv);
4153 vlib_node_increment_counter (vm, node->node_index,
4154 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
4156 return from_frame->n_vectors;
4160 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
4161 .function = lisp_cp_input,
4162 .name = "lisp-cp-input",
4163 .vector_size = sizeof (u32),
4164 .format_trace = format_lisp_cp_input_trace,
4165 .type = VLIB_NODE_TYPE_INTERNAL,
4167 .n_errors = LISP_CP_INPUT_N_ERROR,
4168 .error_strings = lisp_cp_input_error_strings,
4170 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
4173 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
4179 lisp_cp_init (vlib_main_t * vm)
4181 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4182 clib_error_t *error = 0;
4183 vlib_thread_main_t *vtm = vlib_get_thread_main ();
4186 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
4189 lcm->im4 = &ip4_main;
4190 lcm->im6 = &ip6_main;
4191 lcm->vlib_main = vm;
4192 lcm->vnet_main = vnet_get_main ();
4193 lcm->mreq_itr_rlocs = ~0;
4196 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
4197 memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
4199 gid_dictionary_init (&lcm->mapping_index_by_gid);
4200 lcm->do_map_resolver_election = 1;
4201 lcm->do_map_server_election = 1;
4202 lcm->map_request_mode = MR_MODE_DST_ONLY;
4204 num_threads = 1 /* main thread */ + vtm->n_threads;
4205 vec_validate (lcm->map_records_args_pool, num_threads - 1);
4207 /* default vrf mapped to vni 0 */
4208 hash_set (lcm->table_id_by_vni, 0, 0);
4209 hash_set (lcm->vni_by_table_id, 0, 0);
4211 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
4212 lisp_cp_input_node.index, 1 /* is_ip4 */ );
4213 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
4214 lisp_cp_input_node.index, 0 /* is_ip4 */ );
4216 u64 now = clib_cpu_time_now ();
4217 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
4218 lcm->nsh_map_index = ~0;
4219 lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
4220 lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
4221 lcm->expired_map_registers = 0;
4226 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
4227 lisp_api_stats_t * stat, lisp_stats_key_t * key,
4231 vlib_combined_counter_main_t *cm = &lgm->counters;
4232 lisp_gpe_fwd_entry_key_t fwd_key;
4233 const lisp_gpe_tunnel_t *lgt;
4236 memset (stat, 0, sizeof (*stat));
4237 memset (&fwd_key, 0, sizeof (fwd_key));
4239 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
4242 gid_to_dp_address (&fe->reid, &stat->deid);
4243 gid_to_dp_address (&fe->leid, &stat->seid);
4244 stat->vni = gid_address_vni (&fe->reid);
4246 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
4247 stat->loc_rloc = lgt->key->lcl;
4248 stat->rmt_rloc = lgt->key->rmt;
4250 vlib_get_combined_counter (cm, stats_index, &v);
4256 vnet_lisp_get_stats (void)
4258 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
4259 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4260 lisp_api_stats_t *stats = 0, stat;
4261 lisp_stats_key_t *key;
4265 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
4267 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
4268 vec_add1 (stats, stat);
4276 send_map_request_thread_fn (void *arg)
4278 map_request_args_t *a = arg;
4279 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4282 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4284 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4290 queue_map_request (gid_address_t * seid, gid_address_t * deid,
4291 u8 smr_invoked, u8 is_resend)
4293 map_request_args_t a;
4295 a.is_resend = is_resend;
4296 gid_address_copy (&a.seid, seid);
4297 gid_address_copy (&a.deid, deid);
4298 a.smr_invoked = smr_invoked;
4300 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
4301 (u8 *) & a, sizeof (a));
4306 * Take an action with a pending map request depending on expiration time
4307 * and re-try counters.
4310 update_pending_request (pending_map_request_t * r, f64 dt)
4312 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4315 if (r->time_to_expire - dt < 0)
4316 /* it's time to decide what to do with this pending request */
4318 if (r->retries_num >= NUMBER_OF_RETRIES)
4319 /* too many retries -> assume current map resolver is not available */
4321 mr = get_map_resolver (&lcm->active_map_resolver);
4324 clib_warning ("Map resolver %U not found - probably deleted "
4325 "by the user recently.", format_ip_address,
4326 &lcm->active_map_resolver);
4330 clib_warning ("map resolver %U is unreachable, ignoring",
4331 format_ip_address, &lcm->active_map_resolver);
4333 /* mark current map resolver unavailable so it won't be
4334 * selected next time */
4336 mr->last_update = vlib_time_now (lcm->vlib_main);
4339 reset_pending_mr_counters (r);
4340 elect_map_resolver (lcm);
4342 /* try to find a next eligible map resolver and re-send */
4343 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4349 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4352 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
4356 r->time_to_expire -= dt;
4360 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
4363 pending_map_request_t *pmr;
4364 u32 *to_be_removed = 0, *pmr_index;
4367 pool_foreach (pmr, lcm->pending_map_requests_pool,
4369 if (pmr->to_be_removed)
4371 clib_fifo_foreach (nonce, pmr->nonces, ({
4372 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
4375 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
4380 vec_foreach (pmr_index, to_be_removed)
4381 pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
4383 vec_free (to_be_removed);
4387 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
4389 static f64 time_left = RLOC_PROBING_INTERVAL;
4391 if (!lcm->is_enabled || !lcm->rloc_probing)
4397 time_left = RLOC_PROBING_INTERVAL;
4398 send_rloc_probes (lcm);
4403 update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
4405 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4409 r->time_to_expire -= dt;
4411 if (r->time_to_expire < 0)
4413 lcm->expired_map_registers++;
4415 if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
4417 ms = get_map_server (&lcm->active_map_server);
4420 clib_warning ("Map server %U not found - probably deleted "
4421 "by the user recently.", format_ip_address,
4422 &lcm->active_map_server);
4426 clib_warning ("map server %U is unreachable, ignoring",
4427 format_ip_address, &lcm->active_map_server);
4429 /* mark current map server unavailable so it won't be
4430 * elected next time */
4432 ms->last_update = vlib_time_now (lcm->vlib_main);
4435 elect_map_server (lcm);
4437 /* indication for deleting all pending map registers */
4439 lcm->expired_map_registers = 0;
4444 /* delete pending map register */
4452 update_map_register (lisp_cp_main_t * lcm, f64 dt)
4454 u32 *to_be_removed = 0, *pmr_index;
4455 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
4456 static u64 mreg_sent_counter = 0;
4458 pending_map_register_t *pmr;
4461 if (!lcm->is_enabled || !lcm->map_registering)
4465 pool_foreach (pmr, lcm->pending_map_registers_pool,
4467 if (!update_pending_map_register (pmr, dt, &del_all))
4471 vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
4478 /* delete all pending map register messages so they won't
4479 * trigger another map server election.. */
4480 pool_free (lcm->pending_map_registers_pool);
4481 hash_free (lcm->map_register_messages_by_nonce);
4483 /* ..and trigger registration against next map server (if any) */
4488 vec_foreach (pmr_index, to_be_removed)
4489 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4492 vec_free (to_be_removed);
4497 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
4498 time_left = MAP_REGISTER_INTERVAL;
4501 mreg_sent_counter++;
4502 time_left = QUICK_MAP_REGISTER_INTERVAL;
4504 send_map_register (lcm, 1 /* want map notify */ );
4509 send_map_resolver_service (vlib_main_t * vm,
4510 vlib_node_runtime_t * rt, vlib_frame_t * f)
4514 pending_map_request_t *pmr;
4515 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4519 vlib_process_wait_for_event_or_clock (vm, period);
4521 /* currently no signals are expected - just wait for clock */
4522 (void) vlib_process_get_events (vm, 0);
4525 pool_foreach (pmr, lcm->pending_map_requests_pool,
4527 if (!pmr->to_be_removed)
4528 update_pending_request (pmr, period);
4532 remove_dead_pending_map_requests (lcm);
4534 update_map_register (lcm, period);
4535 update_rloc_probing (lcm, period);
4537 u64 now = clib_cpu_time_now ();
4539 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
4540 if (vec_len (expired) > 0)
4543 vec_foreach (mi, expired)
4545 process_expired_mapping (lcm, mi[0]);
4547 _vec_len (expired) = 0;
4556 vnet_lisp_stats_enable_disable (u8 enable)
4558 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4560 if (vnet_lisp_enable_disable_status () == 0)
4561 return VNET_API_ERROR_LISP_DISABLED;
4564 lcm->flags |= LISP_FLAG_STATS_ENABLED;
4566 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
4572 vnet_lisp_stats_enable_disable_state (void)
4574 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4576 if (vnet_lisp_enable_disable_status () == 0)
4577 return VNET_API_ERROR_LISP_DISABLED;
4579 return lcm->flags & LISP_FLAG_STATS_ENABLED;
4583 VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
4584 .function = send_map_resolver_service,
4585 .type = VLIB_NODE_TYPE_PROCESS,
4586 .name = "lisp-retry-service",
4587 .process_log2_n_stack_bytes = 16,
4591 VLIB_INIT_FUNCTION (lisp_cp_init);
4594 * fd.io coding-style-patch-verification: ON
4597 * eval: (c-set-style "gnu")