2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vlibmemory/api.h>
17 #include <vnet/lisp-cp/control.h>
18 #include <vnet/lisp-cp/packets.h>
19 #include <vnet/lisp-cp/lisp_msg_serdes.h>
20 #include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h>
21 #include <vnet/lisp-gpe/lisp_gpe_tenant.h>
22 #include <vnet/lisp-gpe/lisp_gpe_tunnel.h>
23 #include <vnet/fib/fib_entry.h>
24 #include <vnet/fib/fib_table.h>
25 #include <vnet/ethernet/arp_packet.h>
26 #include <vnet/ethernet/packet.h>
28 #include <openssl/evp.h>
29 #include <openssl/hmac.h>
31 #define MAX_VALUE_U24 0xffffff
33 /* mapping timer control constants (in seconds) */
34 #define TIME_UNTIL_REFETCH_OR_DELETE 20
35 #define MAPPING_TIMEOUT (((m->ttl) * 60) - TIME_UNTIL_REFETCH_OR_DELETE)
37 lisp_cp_main_t lisp_control_main;
39 u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
40 static void *send_map_request_thread_fn (void *arg);
44 LISP_CP_INPUT_NEXT_DROP,
46 } lisp_cp_input_next_t;
57 vnet_lisp_get_map_request_mode (void)
59 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
60 return lcm->map_request_mode;
64 auth_data_len_by_key_id (lisp_key_type_t key_id)
69 return SHA1_AUTH_DATA_LEN;
70 case HMAC_SHA_256_128:
71 return SHA256_AUTH_DATA_LEN;
73 clib_warning ("unsupported key type: %d!", key_id);
80 get_encrypt_fcn (lisp_key_type_t key_id)
86 case HMAC_SHA_256_128:
89 clib_warning ("unsupported encryption key type: %d!", key_id);
96 queue_map_request (gid_address_t * seid, gid_address_t * deid,
97 u8 smr_invoked, u8 is_resend);
99 ip_interface_address_t *
100 ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
101 u32 sw_if_index, u8 loop)
103 vnet_main_t *vnm = vnet_get_main ();
104 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
105 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
106 sw_if_index = swif->unnumbered_sw_if_index;
108 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
109 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
111 return pool_elt_at_index ((lm)->if_address_pool, ia);
115 ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
118 ip_interface_address_t *ia;
120 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
123 return ip_interface_address_get_address (lm, ia);
127 ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
128 u8 version, ip_address_t * result)
130 ip_lookup_main_t *lm;
133 lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
134 addr = ip_interface_get_first_address (lm, sw_if_index, version);
138 ip_address_set (result, addr, version);
143 * convert from a LISP address to a FIB prefix
146 ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
148 if (addr->version == IP4)
151 prefix->fp_proto = FIB_PROTOCOL_IP4;
152 memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
153 memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
157 prefix->fp_len = 128;
158 prefix->fp_proto = FIB_PROTOCOL_IP6;
159 memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
164 * convert from a LISP to a FIB prefix
167 ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
168 fib_prefix_t * fib_prefix)
170 ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
171 fib_prefix->fp_len = ip_prefix->len;
175 * Find the sw_if_index of the interface that would be used to egress towards
179 ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
181 fib_node_index_t fei;
184 ip_address_to_fib_prefix (dst, &prefix);
186 fei = fib_table_lookup (0, &prefix);
188 return (fib_entry_get_resolving_interface (fei));
192 * Find first IP of the interface that would be used to egress towards dst.
193 * Returns 1 if the address is found 0 otherwise.
196 ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
197 ip_address_t * result)
200 ip_lookup_main_t *lm;
204 ASSERT (result != 0);
206 ipver = ip_addr_version (dst);
208 lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
209 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
214 /* find the first ip address */
215 addr = ip_interface_get_first_address (lm, si, ipver);
219 ip_address_set (result, addr, ipver);
224 dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add)
230 dp_table = hash_get (lcm->table_id_by_vni, vni);
234 clib_warning ("vni %d not associated to a vrf!", vni);
235 return VNET_API_ERROR_INVALID_VALUE;
240 dp_table = hash_get (lcm->bd_id_by_vni, vni);
243 clib_warning ("vni %d not associated to a bridge domain!", vni);
244 return VNET_API_ERROR_INVALID_VALUE;
248 /* enable/disable data-plane interface */
252 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
254 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0]);
259 lisp_gpe_tenant_l2_iface_unlock (vni);
261 lisp_gpe_tenant_l3_iface_unlock (vni);
268 dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 dst_map_index)
270 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
273 memset (a, 0, sizeof (*a));
275 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
279 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
281 /* delete dp fwd entry */
284 a->locator_pairs = fe->locator_pairs;
285 a->vni = gid_address_vni (&fe->reid);
286 gid_address_copy (&a->rmt_eid, &fe->reid);
288 gid_address_copy (&a->lcl_eid, &fe->leid);
290 vnet_lisp_gpe_del_fwd_counters (a, feip[0]);
291 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
293 /* delete entry in fwd table */
294 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
295 vec_free (fe->locator_pairs);
296 pool_put (lcm->fwd_entry_pool, fe);
300 * Finds first remote locator with best (lowest) priority that has a local
301 * peer locator with an underlying route to it.
305 get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
306 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
308 u32 i, limitp = 0, li, found = 0, esi;
309 locator_set_t *rmt_ls, *lcl_ls;
310 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
311 locator_t *lp, *rmt = 0;
316 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
318 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
320 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
327 /* find unvisited remote locator with best priority */
328 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
330 if (0 != hash_get (checked, i))
333 li = vec_elt (rmt_ls->locator_indices, i);
334 lp = pool_elt_at_index (lcm->locator_pool, li);
336 /* we don't support non-IP locators for now */
337 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
340 if ((found && lp->priority == limitp)
341 || (!found && lp->priority >= limitp))
345 /* don't search for locators with lower priority and don't
346 * check this locator again*/
347 limitp = lp->priority;
348 hash_set (checked, i, 1);
352 /* check if a local locator with a route to remote locator exists */
355 /* find egress sw_if_index for rmt locator */
357 ip_fib_get_egress_iface_for_dst (lcm,
358 &gid_address_ip (&rmt->address));
359 if ((u32) ~ 0 == esi)
362 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
364 li = vec_elt (lcl_ls->locator_indices, i);
365 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
367 /* found local locator with the needed sw_if_index */
368 if (sl->sw_if_index == esi)
370 /* and it has an address */
371 if (0 == ip_interface_get_first_ip_address (lcm,
373 gid_address_ip_version
378 memset (&pair, 0, sizeof (pair));
379 ip_address_copy (&pair.rmt_loc,
380 &gid_address_ip (&rmt->address));
381 ip_address_copy (&pair.lcl_loc, lcl_addr);
382 pair.weight = rmt->weight;
383 pair.priority = rmt->priority;
384 vec_add1 (locator_pairs[0], pair);
398 gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
401 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
405 switch (fid_addr_type (fid))
407 case FID_ADDR_IP_PREF:
408 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
409 gid_address_ippref (dst) = fid_addr_ippref (fid);
412 gid_address_type (dst) = GID_ADDR_MAC;
413 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
416 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
422 vnet_lisp_map_register_state_get (void)
424 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
425 return lcm->map_registering;
429 vnet_lisp_rloc_probe_state_get (void)
431 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
432 return lcm->rloc_probing;
436 dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
438 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
439 gid_address_t *rmt_eid, *lcl_eid;
440 mapping_t *lcl_map, *rmt_map;
441 u32 sw_if_index, **rmts, rmts_idx;
442 uword *feip = 0, *dpid, *rmts_stored_idxp = 0;
444 u8 type, is_src_dst = 0;
447 memset (a, 0, sizeof (*a));
449 /* remove entry if it already exists */
450 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
452 dp_del_fwd_entry (lcm, dst_map_index);
455 * Determine local mapping and eid
458 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
460 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
461 lcl_eid = &lcl_map->eid;
464 * Determine remote mapping and eid
466 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
467 rmt_eid = &rmt_map->eid;
470 * Build and insert data plane forwarding entry
474 if (MR_MODE_SRC_DST == lcm->map_request_mode)
476 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
478 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
479 &gid_address_sd_dst (rmt_eid));
480 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
481 &gid_address_sd_src (rmt_eid));
485 gid_address_copy (&a->rmt_eid, rmt_eid);
486 gid_address_copy (&a->lcl_eid, lcl_eid);
491 gid_address_copy (&a->rmt_eid, rmt_eid);
493 a->vni = gid_address_vni (&a->rmt_eid);
494 a->is_src_dst = is_src_dst;
496 /* get vrf or bd_index associated to vni */
497 type = gid_address_type (&a->rmt_eid);
498 if (GID_ADDR_IP_PREFIX == type)
500 dpid = hash_get (lcm->table_id_by_vni, a->vni);
503 clib_warning ("vni %d not associated to a vrf!", a->vni);
506 a->table_id = dpid[0];
508 else if (GID_ADDR_MAC == type)
510 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
513 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
519 /* find best locator pair that 1) verifies LISP policy 2) are connected */
520 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
522 /* Either rmt mapping is negative or we can't find underlay path.
523 * Try again with petr if configured */
524 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
526 rmt_map = lisp_get_petr_mapping (lcm);
527 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
534 a->action = rmt_map->action;
537 rv = vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
540 if (a->locator_pairs)
541 vec_free (a->locator_pairs);
545 /* add tunnel to fwd entry table */
546 pool_get (lcm->fwd_entry_pool, fe);
547 vnet_lisp_gpe_add_fwd_counters (a, fe - lcm->fwd_entry_pool);
549 fe->locator_pairs = a->locator_pairs;
550 gid_address_copy (&fe->reid, &a->rmt_eid);
553 gid_address_copy (&fe->leid, &a->lcl_eid);
555 gid_address_copy (&fe->leid, lcl_eid);
557 fe->is_src_dst = is_src_dst;
558 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
559 fe - lcm->fwd_entry_pool);
561 /* Add rmt mapping to the vector of adjacent mappings to lcl mapping */
563 hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index);
564 if (!rmts_stored_idxp)
566 pool_get (lcm->lcl_to_rmt_adjacencies, rmts);
567 memset (rmts, 0, sizeof (*rmts));
568 rmts_idx = rmts - lcm->lcl_to_rmt_adjacencies;
569 hash_set (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index, rmts_idx);
573 rmts_idx = (u32) (*rmts_stored_idxp);
574 rmts = pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idx);
576 vec_add1 (rmts[0], dst_map_index);
583 } fwd_entry_mt_arg_t;
586 dp_add_fwd_entry_thread_fn (void *arg)
588 fwd_entry_mt_arg_t *a = arg;
589 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
590 dp_add_fwd_entry (lcm, a->si, a->di);
595 dp_add_fwd_entry_from_mt (u32 si, u32 di)
597 fwd_entry_mt_arg_t a;
599 memset (&a, 0, sizeof (a));
603 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
604 (u8 *) & a, sizeof (a));
609 * Returns vector of adjacencies.
611 * The caller must free the vector returned by this function.
613 * @param vni virtual network identifier
614 * @return vector of adjacencies
617 vnet_lisp_adjacencies_get_by_vni (u32 vni)
619 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
621 lisp_adjacency_t *adjs = 0, adj;
624 pool_foreach(fwd, lcm->fwd_entry_pool,
626 if (gid_address_vni (&fwd->reid) != vni)
629 gid_address_copy (&adj.reid, &fwd->reid);
630 gid_address_copy (&adj.leid, &fwd->leid);
631 vec_add1 (adjs, adj);
639 get_map_server (ip_address_t * a)
641 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
644 vec_foreach (m, lcm->map_servers)
646 if (!ip_address_cmp (&m->address, a))
655 get_map_resolver (ip_address_t * a)
657 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
660 vec_foreach (m, lcm->map_resolvers)
662 if (!ip_address_cmp (&m->address, a))
671 vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
674 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
675 lisp_msmr_t _ms, *ms = &_ms;
677 if (vnet_lisp_enable_disable_status () == 0)
679 clib_warning ("LISP is disabled!");
680 return VNET_API_ERROR_LISP_DISABLED;
685 if (get_map_server (addr))
687 clib_warning ("map-server %U already exists!", format_ip_address,
692 memset (ms, 0, sizeof (*ms));
693 ip_address_copy (&ms->address, addr);
694 vec_add1 (lcm->map_servers, ms[0]);
696 if (vec_len (lcm->map_servers) == 1)
697 lcm->do_map_server_election = 1;
701 for (i = 0; i < vec_len (lcm->map_servers); i++)
703 ms = vec_elt_at_index (lcm->map_servers, i);
704 if (!ip_address_cmp (&ms->address, addr))
706 if (!ip_address_cmp (&ms->address, &lcm->active_map_server))
707 lcm->do_map_server_election = 1;
709 vec_del1 (lcm->map_servers, i);
719 * Add/remove mapping to/from map-cache. Overwriting not allowed.
722 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
723 u32 * map_index_result)
725 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
726 u32 mi, *map_indexp, map_index, i;
727 u32 **rmts = 0, *remote_idxp, rmts_itr, remote_idx;
729 mapping_t *m, *old_map;
732 if (gid_address_type (&a->eid) == GID_ADDR_NSH)
734 if (gid_address_vni (&a->eid) != 0)
736 clib_warning ("Supported only default VNI for NSH!");
737 return VNET_API_ERROR_INVALID_ARGUMENT;
739 if (gid_address_nsh_spi (&a->eid) > MAX_VALUE_U24)
741 clib_warning ("SPI is greater than 24bit!");
742 return VNET_API_ERROR_INVALID_ARGUMENT;
746 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
747 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
750 /* TODO check if overwriting and take appropriate actions */
751 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
753 clib_warning ("eid %U found in the eid-table", format_gid_address,
755 return VNET_API_ERROR_VALUE_EXIST;
758 pool_get (lcm->mapping_pool, m);
759 gid_address_copy (&m->eid, &a->eid);
760 m->locator_set_index = a->locator_set_index;
762 m->action = a->action;
764 m->is_static = a->is_static;
765 m->key = vec_dup (a->key);
766 m->key_id = a->key_id;
768 map_index = m - lcm->mapping_pool;
769 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
772 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
774 clib_warning ("Locator set with index %d doesn't exist",
775 a->locator_set_index);
776 return VNET_API_ERROR_INVALID_VALUE;
779 /* add eid to list of eids supported by locator-set */
780 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
781 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
782 a->locator_set_index);
783 vec_add1 (eid_indexes[0], map_index);
788 vec_add1 (lcm->local_mappings_indexes, map_index);
790 map_index_result[0] = map_index;
794 if (mi == GID_LOOKUP_MISS)
796 clib_warning ("eid %U not found in the eid-table",
797 format_gid_address, &a->eid);
798 return VNET_API_ERROR_INVALID_VALUE;
801 /* clear locator-set to eids binding */
802 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
803 a->locator_set_index);
804 for (i = 0; i < vec_len (eid_indexes[0]); i++)
806 map_indexp = vec_elt_at_index (eid_indexes[0], i);
807 if (map_indexp[0] == mi)
810 vec_del1 (eid_indexes[0], i);
812 /* remove local mark if needed */
813 m = pool_elt_at_index (lcm->mapping_pool, mi);
816 /* Remove adjacencies associated with the local mapping */
817 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
821 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
822 vec_foreach (remote_idxp, rmts[0])
824 dp_del_fwd_entry (lcm, remote_idxp[0]);
827 pool_put (lcm->lcl_to_rmt_adjacencies, rmts);
828 hash_unset (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
832 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
834 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
835 if (lm_indexp[0] == mi)
838 vec_del1 (lcm->local_mappings_indexes, k);
842 /* Remove remote (if present) from the vectors of lcl-to-rmts
843 * TODO: Address this in a more efficient way.
846 pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies,
848 vec_foreach_index (rmts_itr, rmts[0])
850 remote_idx = vec_elt (rmts[0], rmts_itr);
851 if (mi == remote_idx)
853 vec_del1 (rmts[0], rmts_itr);
861 /* remove mapping from dictionary */
862 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
863 gid_address_free (&m->eid);
864 pool_put_index (lcm->mapping_pool, mi);
871 * Add/update/delete mapping to/in/from map-cache.
874 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
875 u32 * map_index_result)
881 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
883 if (vnet_lisp_enable_disable_status () == 0)
885 clib_warning ("LISP is disabled!");
886 return VNET_API_ERROR_LISP_DISABLED;
889 vni = gid_address_vni (&a->eid);
890 type = gid_address_type (&a->eid);
891 if (GID_ADDR_IP_PREFIX == type)
892 dp_table = hash_get (lcm->table_id_by_vni, vni);
893 else if (GID_ADDR_MAC == type)
894 dp_table = hash_get (lcm->bd_id_by_vni, vni);
896 if (!dp_table && GID_ADDR_NSH != type)
898 clib_warning ("vni %d not associated to a %s!", vni,
899 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
900 return VNET_API_ERROR_INVALID_VALUE;
903 /* store/remove mapping from map-cache */
904 return vnet_lisp_map_cache_add_del (a, map_index_result);
908 add_l2_arp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
911 u32 version = (u32) kvp->key[0];
915 u32 bd = (u32) (kvp->key[0] >> 32);
916 hash_set (ht[0], bd, 0);
920 vnet_lisp_l2_arp_bds_get (void)
922 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
925 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
926 add_l2_arp_bd, &bds);
931 add_ndp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
934 u32 version = (u32) kvp->key[0];
938 u32 bd = (u32) (kvp->key[0] >> 32);
939 hash_set (ht[0], bd, 0);
943 vnet_lisp_ndp_bds_get (void)
945 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
948 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
957 } lisp_add_l2_arp_ndp_args_t;
960 add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
962 lisp_add_l2_arp_ndp_args_t *a = arg;
963 lisp_api_l2_arp_entry_t **vector = a->vector, e;
965 u32 version = (u32) kvp->key[0];
969 u32 bd = (u32) (kvp->key[0] >> 32);
973 mac_copy (e.mac, (void *) &kvp->value);
974 e.ip4 = (u32) kvp->key[1];
975 vec_add1 (vector[0], e);
979 lisp_api_l2_arp_entry_t *
980 vnet_lisp_l2_arp_entries_get_by_bd (u32 bd)
982 lisp_api_l2_arp_entry_t *entries = 0;
983 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
984 lisp_add_l2_arp_ndp_args_t a;
989 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
990 add_l2_arp_entry, &a);
995 add_ndp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
997 lisp_add_l2_arp_ndp_args_t *a = arg;
998 lisp_api_ndp_entry_t **vector = a->vector, e;
1000 u32 version = (u32) kvp->key[0];
1004 u32 bd = (u32) (kvp->key[0] >> 32);
1008 mac_copy (e.mac, (void *) &kvp->value);
1009 clib_memcpy (e.ip6, &kvp->key[1], 16);
1010 vec_add1 (vector[0], e);
1014 lisp_api_ndp_entry_t *
1015 vnet_lisp_ndp_entries_get_by_bd (u32 bd)
1017 lisp_api_ndp_entry_t *entries = 0;
1018 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1019 lisp_add_l2_arp_ndp_args_t a;
1021 a.vector = &entries;
1024 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
1030 vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac, u8 is_add)
1032 if (vnet_lisp_enable_disable_status () == 0)
1034 clib_warning ("LISP is disabled!");
1035 return VNET_API_ERROR_LISP_DISABLED;
1038 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1041 u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key);
1044 if (res != GID_LOOKUP_MISS_L2)
1046 clib_warning ("Entry %U exists in DB!", format_gid_address, key);
1047 return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
1049 u64 val = mac_to_u64 (mac);
1050 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val,
1055 if (res == GID_LOOKUP_MISS_L2)
1057 clib_warning ("ONE entry %U not found - cannot delete!",
1058 format_gid_address, key);
1061 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0,
1069 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
1071 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1072 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
1074 if (vnet_lisp_enable_disable_status () == 0)
1076 clib_warning ("LISP is disabled!");
1077 return VNET_API_ERROR_LISP_DISABLED;
1080 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
1081 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
1083 if (!is_l2 && (vni == 0 || dp_id == 0))
1085 clib_warning ("can't add/del default vni-vrf mapping!");
1089 dp_idp = hash_get (dp_table_by_vni[0], vni);
1090 vnip = hash_get (vni_by_dp_table[0], dp_id);
1096 clib_warning ("vni %d or vrf %d already used in vrf/vni "
1097 "mapping!", vni, dp_id);
1100 hash_set (dp_table_by_vni[0], vni, dp_id);
1101 hash_set (vni_by_dp_table[0], dp_id, vni);
1103 /* create dp iface */
1104 dp_add_del_iface (lcm, vni, is_l2, 1);
1108 if (!dp_idp || !vnip)
1110 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
1111 "mapping!", vni, dp_id);
1114 /* remove dp iface */
1115 dp_add_del_iface (lcm, vni, is_l2, 0);
1117 hash_unset (dp_table_by_vni[0], vni);
1118 hash_unset (vni_by_dp_table[0], dp_id);
1124 /* return 0 if the two locator sets are identical 1 otherwise */
1126 compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
1127 locator_t * new_locators)
1130 locator_t *old_loc, *new_loc;
1132 if (vec_len (old_ls_indexes) != vec_len (new_locators))
1135 for (i = 0; i < vec_len (new_locators); i++)
1137 old_li = vec_elt (old_ls_indexes, i);
1138 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
1140 new_loc = vec_elt_at_index (new_locators, i);
1142 if (locator_cmp (old_loc, new_loc))
1152 gid_address_t *eids_to_be_deleted;
1153 } remove_mapping_args_t;
1156 * Callback invoked when a sub-prefix is found
1159 remove_mapping_if_needed (u32 mi, void *arg)
1162 remove_mapping_args_t *a = arg;
1163 lisp_cp_main_t *lcm = a->lcm;
1167 m = pool_elt_at_index (lcm->mapping_pool, mi);
1171 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
1175 if (0 != vec_len (ls->locator_indices))
1180 if (0 == vec_len (ls->locator_indices))
1185 vec_add1 (a->eids_to_be_deleted, m->eid);
1189 * This function searches map cache and looks for IP prefixes that are subset
1190 * of the provided one. If such prefix is found depending on 'is_negative'
1193 * 1) if is_negative is true and found prefix points to positive mapping,
1194 * then the mapping is removed
1195 * 2) if is_negative is false and found prefix points to negative mapping,
1196 * then the mapping is removed
1199 remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
1203 remove_mapping_args_t a;
1205 memset (&a, 0, sizeof (a));
1207 /* do this only in src/dst mode ... */
1208 if (MR_MODE_SRC_DST != lcm->map_request_mode)
1211 /* ... and only for IP prefix */
1212 if (GID_ADDR_SRC_DST != gid_address_type (eid)
1213 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
1216 a.is_negative = is_negative;
1219 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
1220 remove_mapping_if_needed, &a);
1222 vec_foreach (e, a.eids_to_be_deleted)
1224 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
1226 memset (adj_args, 0, sizeof (adj_args[0]));
1227 gid_address_copy (&adj_args->reid, e);
1228 adj_args->is_add = 0;
1229 if (vnet_lisp_add_del_adjacency (adj_args))
1230 clib_warning ("failed to del adjacency!");
1232 vnet_lisp_del_mapping (e, NULL);
1235 vec_free (a.eids_to_be_deleted);
1239 mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
1241 timing_wheel_delete (&lcm->wheel, mi);
1245 is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
1247 fib_node_index_t fei;
1248 fib_prefix_t prefix;
1249 fib_entry_flag_t flags;
1251 ip_address_to_fib_prefix (addr, &prefix);
1253 fei = fib_table_lookup (0, &prefix);
1254 flags = fib_entry_get_flags (fei);
1255 return (FIB_ENTRY_FLAG_LOCAL & flags);
1259 * Adds/updates mapping. Does not program forwarding.
1261 * @param a parameters of the new mapping
1262 * @param rlocs vector of remote locators
1263 * @param res_map_index index of the newly created mapping
1264 * @param locators_changed indicator if locators were updated in the mapping
1265 * @return return code
1268 vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
1270 u32 * res_map_index, u8 * is_updated)
1272 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1273 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1274 u32 mi, ls_index = 0, dst_map_index;
1278 if (vnet_lisp_enable_disable_status () == 0)
1280 clib_warning ("LISP is disabled!");
1281 return VNET_API_ERROR_LISP_DISABLED;
1285 res_map_index[0] = ~0;
1289 memset (ls_args, 0, sizeof (ls_args[0]));
1291 ls_args->locators = rlocs;
1292 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
1293 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1295 /* check if none of the locators match localy configured address */
1296 vec_foreach (loc, rlocs)
1298 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1299 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1301 clib_warning ("RLOC %U matches a local address!",
1302 format_gid_address, &loc->address);
1303 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1307 /* overwrite: if mapping already exists, decide if locators should be
1308 * updated and be done */
1309 if (old_map && gid_address_cmp (&old_map->eid, &a->eid) == 0)
1311 if (!a->is_static && (old_map->is_static || old_map->local))
1313 /* do not overwrite local or static remote mappings */
1314 clib_warning ("mapping %U rejected due to collision with local "
1315 "or static remote mapping!", format_gid_address,
1320 locator_set_t *old_ls;
1322 /* update mapping attributes */
1323 old_map->action = a->action;
1324 if (old_map->action != a->action && NULL != is_updated)
1327 old_map->authoritative = a->authoritative;
1328 old_map->ttl = a->ttl;
1330 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1331 old_map->locator_set_index);
1332 if (compare_locators (lcm, old_ls->locator_indices, ls_args->locators))
1334 /* set locator-set index to overwrite */
1335 ls_args->is_add = 1;
1336 ls_args->index = old_map->locator_set_index;
1337 vnet_lisp_add_del_locator_set (ls_args, 0);
1342 res_map_index[0] = mi;
1347 remove_overlapping_sub_prefixes (lcm, &a->eid, 0 == ls_args->locators);
1349 ls_args->is_add = 1;
1350 ls_args->index = ~0;
1352 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1356 a->locator_set_index = ls_index;
1357 vnet_lisp_map_cache_add_del (a, &dst_map_index);
1360 res_map_index[0] = dst_map_index;
1368 * Removes a mapping. Does not program forwarding.
1370 * @param eid end-host indetifier
1371 * @param res_map_index index of the removed mapping
1372 * @return return code
1375 vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index)
1377 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1378 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1379 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1383 memset (ls_args, 0, sizeof (ls_args[0]));
1384 memset (m_args, 0, sizeof (m_args[0]));
1386 res_map_index[0] = ~0;
1388 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1389 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1391 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1393 clib_warning ("cannot delete mapping for eid %U",
1394 format_gid_address, eid);
1399 gid_address_copy (&m_args->eid, eid);
1400 m_args->locator_set_index = old_map->locator_set_index;
1402 /* delete mapping associated from map-cache */
1403 vnet_lisp_map_cache_add_del (m_args, 0);
1405 ls_args->is_add = 0;
1406 ls_args->index = old_map->locator_set_index;
1408 /* delete locator set */
1409 vnet_lisp_add_del_locator_set (ls_args, 0);
1411 /* delete timer associated to the mapping if any */
1412 if (old_map->timer_set)
1413 mapping_delete_timer (lcm, mi);
1415 /* return old mapping index */
1417 res_map_index[0] = mi;
1424 vnet_lisp_clear_all_remote_adjacencies (void)
1427 u32 mi, *map_indices = 0, *map_indexp;
1428 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1429 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1430 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1433 pool_foreach_index (mi, lcm->mapping_pool,
1435 vec_add1 (map_indices, mi);
1439 vec_foreach (map_indexp, map_indices)
1441 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1444 dp_del_fwd_entry (lcm, map_indexp[0]);
1446 dm_args->is_add = 0;
1447 gid_address_copy (&dm_args->eid, &map->eid);
1448 dm_args->locator_set_index = map->locator_set_index;
1450 /* delete mapping associated to fwd entry */
1451 vnet_lisp_map_cache_add_del (dm_args, 0);
1455 ls->index = map->locator_set_index;
1456 /* delete locator set */
1457 rv = vnet_lisp_add_del_locator_set (ls, 0);
1465 vec_free (map_indices);
1470 * Adds adjacency or removes forwarding entry associated to remote mapping.
1471 * Note that adjacencies are not stored, they only result in forwarding entries
1475 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1477 lisp_cp_main_t *lcm = &lisp_control_main;
1478 u32 local_mi, remote_mi = ~0;
1480 if (vnet_lisp_enable_disable_status () == 0)
1482 clib_warning ("LISP is disabled!");
1483 return VNET_API_ERROR_LISP_DISABLED;
1486 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1487 &a->reid, &a->leid);
1488 if (GID_LOOKUP_MISS == remote_mi)
1490 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1491 format_gid_address, &a->reid);
1498 /* check if source eid has an associated mapping. If pitr mode is on,
1499 * just use the pitr's mapping */
1501 local_mi = lcm->pitr_map_index;
1504 if (gid_address_type (&a->reid) == GID_ADDR_NSH)
1506 if (lcm->nsh_map_index == ~0)
1507 local_mi = GID_LOOKUP_MISS;
1509 local_mi = lcm->nsh_map_index;
1513 local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1518 if (GID_LOOKUP_MISS == local_mi)
1520 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1521 format_gid_address, &a->leid);
1526 /* update forwarding */
1527 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1530 dp_del_fwd_entry (lcm, remote_mi);
1536 vnet_lisp_set_map_request_mode (u8 mode)
1538 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1540 if (vnet_lisp_enable_disable_status () == 0)
1542 clib_warning ("LISP is disabled!");
1543 return VNET_API_ERROR_LISP_DISABLED;
1546 if (mode >= _MR_MODE_MAX)
1548 clib_warning ("Invalid LISP map request mode %d!", mode);
1549 return VNET_API_ERROR_INVALID_ARGUMENT;
1552 lcm->map_request_mode = mode;
1557 vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
1559 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1560 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
1561 u32 locator_set_index = ~0;
1565 if (vnet_lisp_enable_disable_status () == 0)
1567 clib_warning ("LISP is disabled!");
1568 return VNET_API_ERROR_LISP_DISABLED;
1573 if (lcm->nsh_map_index == (u32) ~ 0)
1575 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1578 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1581 locator_set_index = p[0];
1583 pool_get (lcm->mapping_pool, m);
1584 memset (m, 0, sizeof *m);
1585 m->locator_set_index = locator_set_index;
1588 lcm->nsh_map_index = m - lcm->mapping_pool;
1590 if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
1596 if (lcm->nsh_map_index != (u32) ~ 0)
1598 /* remove NSH mapping */
1599 pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
1600 lcm->nsh_map_index = ~0;
1601 vnet_lisp_gpe_del_nsh_iface (lgm);
1608 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1610 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1611 u32 locator_set_index = ~0;
1615 if (vnet_lisp_enable_disable_status () == 0)
1617 clib_warning ("LISP is disabled!");
1618 return VNET_API_ERROR_LISP_DISABLED;
1621 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1624 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1627 locator_set_index = p[0];
1631 pool_get (lcm->mapping_pool, m);
1632 m->locator_set_index = locator_set_index;
1635 lcm->pitr_map_index = m - lcm->mapping_pool;
1637 /* enable pitr mode */
1642 /* remove pitr mapping */
1643 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1645 /* disable pitr mode */
1652 vnet_lisp_map_register_fallback_threshold_set (u32 value)
1654 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1657 return VNET_API_ERROR_INVALID_ARGUMENT;
1660 lcm->max_expired_map_registers = value;
1665 vnet_lisp_map_register_fallback_threshold_get (void)
1667 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1668 return lcm->max_expired_map_registers;
1672 * Configure Proxy-ETR
1674 * @param ip PETR's IP address
1675 * @param is_add Flag that indicates if this is an addition or removal
1677 * return 0 on success
1680 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1682 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1685 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1688 if (vnet_lisp_enable_disable_status () == 0)
1690 clib_warning ("LISP is disabled!");
1691 return VNET_API_ERROR_LISP_DISABLED;
1694 memset (ls_args, 0, sizeof (*ls_args));
1698 /* Create dummy petr locator-set */
1699 memset (&loc, 0, sizeof (loc));
1700 gid_address_from_ip (&loc.address, ip);
1702 loc.state = loc.weight = 1;
1705 ls_args->is_add = 1;
1706 ls_args->index = ~0;
1707 vec_add1 (ls_args->locators, loc);
1708 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1710 /* Add petr mapping */
1711 pool_get (lcm->mapping_pool, m);
1712 m->locator_set_index = ls_index;
1713 lcm->petr_map_index = m - lcm->mapping_pool;
1715 /* Enable use-petr */
1716 lcm->flags |= LISP_FLAG_USE_PETR;
1720 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1722 /* Remove petr locator */
1723 ls_args->is_add = 0;
1724 ls_args->index = m->locator_set_index;
1725 vnet_lisp_add_del_locator_set (ls_args, 0);
1727 /* Remove petr mapping */
1728 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1730 /* Disable use-petr */
1731 lcm->flags &= ~LISP_FLAG_USE_PETR;
1736 /* cleans locator to locator-set data and removes locators not part of
1737 * any locator-set */
1739 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1741 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1742 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1743 for (i = 0; i < vec_len (ls->locator_indices); i++)
1745 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1746 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1748 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1750 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1751 if (ls_indexp[0] == lsi)
1755 /* delete index for removed locator-set */
1756 vec_del1 (ls_indexes[0], j);
1758 /* delete locator if it's part of no locator-set */
1759 if (vec_len (ls_indexes[0]) == 0)
1761 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1762 vec_add1 (to_be_deleted, i);
1768 for (i = 0; i < vec_len (to_be_deleted); i++)
1770 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1771 vec_del1 (ls->locator_indices, loc_indexp[0]);
1773 vec_free (to_be_deleted);
1777 static inline uword *
1778 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1780 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1785 /* find locator-set */
1789 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1800 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1806 ASSERT (ls != NULL);
1807 ASSERT (loc != NULL);
1809 vec_foreach (locit, ls->locator_indices)
1811 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1812 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1813 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1815 clib_warning ("Duplicate locator");
1816 return VNET_API_ERROR_VALUE_EXIST;
1824 update_adjacencies_by_map_index (lisp_cp_main_t * lcm, u8 is_local,
1825 u32 mapping_index, u8 remove_only)
1829 vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
1831 map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
1834 pool_foreach(fwd, lcm->fwd_entry_pool,
1836 if ((is_local && 0 == gid_address_cmp (&map->eid, &fwd->leid)) ||
1837 (!is_local && 0 == gid_address_cmp (&map->eid, &fwd->reid)))
1840 gid_address_copy (&a->leid, &fwd->leid);
1841 gid_address_copy (&a->reid, &fwd->reid);
1843 vnet_lisp_add_del_adjacency (a);
1848 vnet_lisp_add_del_adjacency (a);
1856 update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm, u8 is_local,
1857 u32 ls_index, u8 remove_only)
1862 if (vec_len (lcm->locator_set_to_eids) <= ls_index)
1865 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
1867 for (i = 0; i < vec_len (eid_indexes[0]); i++)
1869 map_indexp = vec_elt_at_index (eid_indexes[0], i);
1870 update_adjacencies_by_map_index (lcm, is_local, map_indexp[0],
1876 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1877 u32 ls_index, u32 loc_id)
1879 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1880 u32 **ls_indexes = NULL;
1882 ASSERT (ls != NULL);
1883 ASSERT (locit != NULL);
1885 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1886 pool_put_index (lcm->locator_pool, locit[0]);
1887 vec_del1 (ls->locator_indices, loc_id);
1888 vec_del1 (ls_indexes[0], ls_index);
1892 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1893 locator_set_t * ls, u32 * ls_result)
1895 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1896 locator_t *loc = NULL, *itloc = NULL;
1897 uword _p = (u32) ~ 0, *p = &_p;
1898 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1904 if (vnet_lisp_enable_disable_status () == 0)
1906 clib_warning ("LISP is disabled!");
1907 return VNET_API_ERROR_LISP_DISABLED;
1910 p = get_locator_set_index (a, p);
1913 clib_warning ("locator-set %v doesn't exist", a->name);
1914 return VNET_API_ERROR_INVALID_ARGUMENT;
1919 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1922 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1924 return VNET_API_ERROR_INVALID_ARGUMENT;
1931 ls_result[0] = p[0];
1933 /* allocate locators */
1934 vec_foreach (itloc, a->locators)
1936 ret = is_locator_in_locator_set (lcm, ls, itloc);
1942 pool_get (lcm->locator_pool, loc);
1944 loc_index = loc - lcm->locator_pool;
1946 vec_add1 (ls->locator_indices, loc_index);
1948 vec_validate (lcm->locator_to_locator_sets, loc_index);
1949 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1951 vec_add1 (ls_indexes[0], p[0]);
1959 vec_foreach (itloc, a->locators)
1963 vec_foreach (locit, ls->locator_indices)
1965 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1967 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1970 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1972 if (0 == loc->local &&
1973 !gid_address_cmp (&loc->address, &itloc->address))
1976 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1981 /* update fwd entries using this locator in DP */
1982 update_fwd_entries_by_locator_set (lcm, loc->local, ls_index,
1983 vec_len (ls->locator_indices)
1996 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
1999 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2001 uword _p = (u32) ~ 0, *p = &_p;
2006 if (vnet_lisp_enable_disable_status () == 0)
2008 clib_warning ("LISP is disabled!");
2009 return VNET_API_ERROR_LISP_DISABLED;
2014 p = get_locator_set_index (a, p);
2017 if (p && p[0] != (u32) ~ 0)
2019 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2022 clib_warning ("locator-set %d to be overwritten doesn't exist!",
2027 /* clean locator to locator-set vectors and remove locators if
2028 * they're not part of another locator-set */
2029 clean_locator_to_locator_set (lcm, p[0]);
2031 /* remove locator indices from locator set */
2032 vec_free (ls->locator_indices);
2037 ls_result[0] = p[0];
2039 /* new locator-set */
2042 pool_get (lcm->locator_set_pool, ls);
2043 memset (ls, 0, sizeof (*ls));
2044 ls_index = ls - lcm->locator_set_pool;
2048 ls->name = vec_dup (a->name);
2050 if (!lcm->locator_set_index_by_name)
2051 lcm->locator_set_index_by_name = hash_create_vec (
2059 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
2062 /* mark as local locator-set */
2063 vec_add1 (lcm->local_locator_set_indexes, ls_index);
2065 ls->local = a->local;
2067 ls_result[0] = ls_index;
2070 ret = vnet_lisp_add_del_locator (a, ls, NULL);
2078 p = get_locator_set_index (a, p);
2081 clib_warning ("locator-set %v doesn't exists", a->name);
2085 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2088 clib_warning ("locator-set with index %d doesn't exists", p[0]);
2092 if (lcm->mreq_itr_rlocs == p[0])
2094 clib_warning ("Can't delete the locator-set used to constrain "
2095 "the itr-rlocs in map-requests!");
2099 if (vec_len (lcm->locator_set_to_eids) != 0)
2101 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
2102 if (vec_len (eid_indexes[0]) != 0)
2105 ("Can't delete a locator that supports a mapping!");
2110 /* clean locator to locator-sets data */
2111 clean_locator_to_locator_set (lcm, p[0]);
2117 vec_foreach_index (it, lcm->local_locator_set_indexes)
2119 lsi = vec_elt (lcm->local_locator_set_indexes, it);
2122 vec_del1 (lcm->local_locator_set_indexes, it);
2126 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
2128 vec_free (ls->name);
2129 vec_free (ls->locator_indices);
2130 pool_put (lcm->locator_set_pool, ls);
2136 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
2138 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2140 lcm->rloc_probing = is_enable;
2145 vnet_lisp_map_register_enable_disable (u8 is_enable)
2147 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2149 lcm->map_registering = is_enable;
2154 vnet_lisp_enable_disable (u8 is_enable)
2156 u32 vni, dp_table, **rmts;
2157 clib_error_t *error = 0;
2158 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2159 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
2161 a->is_en = is_enable;
2162 error = vnet_lisp_gpe_enable_disable (a);
2165 return clib_error_return (0, "failed to %s data-plane!",
2166 a->is_en ? "enable" : "disable");
2171 /* enable all l2 and l3 ifaces */
2174 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
2175 dp_add_del_iface(lcm, vni, 0, 1);
2177 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
2178 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
2184 /* clear interface table */
2185 hash_free (lcm->fwd_entry_by_mapping_index);
2186 pool_free (lcm->fwd_entry_pool);
2187 /* Clear state tracking rmt-lcl fwd entries */
2189 pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
2194 hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
2195 pool_free (lcm->lcl_to_rmt_adjacencies);
2198 /* update global flag */
2199 lcm->is_enabled = is_enable;
2205 vnet_lisp_enable_disable_status (void)
2207 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2208 return lcm->is_enabled;
2212 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
2214 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2216 lisp_msmr_t _mr, *mr = &_mr;
2218 if (vnet_lisp_enable_disable_status () == 0)
2220 clib_warning ("LISP is disabled!");
2221 return VNET_API_ERROR_LISP_DISABLED;
2227 if (get_map_resolver (&a->address))
2229 clib_warning ("map-resolver %U already exists!", format_ip_address,
2234 memset (mr, 0, sizeof (*mr));
2235 ip_address_copy (&mr->address, &a->address);
2236 vec_add1 (lcm->map_resolvers, *mr);
2238 if (vec_len (lcm->map_resolvers) == 1)
2239 lcm->do_map_resolver_election = 1;
2243 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
2245 mr = vec_elt_at_index (lcm->map_resolvers, i);
2246 if (!ip_address_cmp (&mr->address, &a->address))
2248 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
2249 lcm->do_map_resolver_election = 1;
2251 vec_del1 (lcm->map_resolvers, i);
2260 vnet_lisp_map_register_set_ttl (u32 ttl)
2262 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2263 lcm->map_register_ttl = ttl;
2268 vnet_lisp_map_register_get_ttl (void)
2270 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2271 return lcm->map_register_ttl;
2275 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
2277 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2280 if (vnet_lisp_enable_disable_status () == 0)
2282 clib_warning ("LISP is disabled!");
2283 return VNET_API_ERROR_LISP_DISABLED;
2288 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
2291 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
2292 return VNET_API_ERROR_INVALID_ARGUMENT;
2295 lcm->mreq_itr_rlocs = p[0];
2299 lcm->mreq_itr_rlocs = ~0;
2305 /* Statistics (not really errors) */
2306 #define foreach_lisp_cp_lookup_error \
2308 _(MAP_REQUESTS_SENT, "map-request sent") \
2309 _(ARP_REPLY_TX, "ARP replies sent") \
2310 _(NDP_NEIGHBOR_ADVERTISEMENT_TX, \
2311 "neighbor advertisement sent")
2313 static char *lisp_cp_lookup_error_strings[] = {
2314 #define _(sym,string) string,
2315 foreach_lisp_cp_lookup_error
2321 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
2322 foreach_lisp_cp_lookup_error
2324 LISP_CP_LOOKUP_N_ERROR,
2325 } lisp_cp_lookup_error_t;
2329 LISP_CP_LOOKUP_NEXT_DROP,
2330 LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
2331 LISP_CP_LOOKUP_N_NEXT,
2332 } lisp_cp_lookup_next_t;
2336 gid_address_t dst_eid;
2337 ip_address_t map_resolver_ip;
2338 } lisp_cp_lookup_trace_t;
2341 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
2343 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2344 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2345 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
2347 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
2348 format_ip_address, &t->map_resolver_ip, format_gid_address,
2354 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
2355 ip_address_t * sloc)
2360 if (vec_len (lcm->map_resolvers) == 0)
2362 clib_warning ("No map-resolver configured");
2366 /* find the first mr ip we have a route to and the ip of the
2367 * iface that has a route to it */
2368 vec_foreach (mrit, lcm->map_resolvers)
2371 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
2373 ip_address_copy (mr_ip, a);
2375 /* also update globals */
2380 clib_warning ("Can't find map-resolver and local interface ip!");
2384 static gid_address_t *
2385 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
2391 ip_interface_address_t *ia = 0;
2392 gid_address_t gid_data, *gid = &gid_data;
2393 gid_address_t *rlocs = 0;
2394 ip_prefix_t *ippref = &gid_address_ippref (gid);
2395 ip_address_t *rloc = &ip_prefix_addr (ippref);
2397 memset (gid, 0, sizeof (gid[0]));
2398 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
2399 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
2401 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
2402 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
2404 /* Add ipv4 locators first TODO sort them */
2407 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2408 loc->sw_if_index, 1 /* unnumbered */,
2410 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
2411 ip_address_set (rloc, addr, IP4);
2412 ip_prefix_len (ippref) = 32;
2413 ip_prefix_normalize (ippref);
2414 vec_add1 (rlocs, gid[0]);
2417 /* Add ipv6 locators */
2418 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2419 loc->sw_if_index, 1 /* unnumbered */,
2421 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
2422 ip_address_set (rloc, addr, IP6);
2423 ip_prefix_len (ippref) = 128;
2424 ip_prefix_normalize (ippref);
2425 vec_add1 (rlocs, gid[0]);
2433 static vlib_buffer_t *
2434 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
2435 ip_address_t * sloc, ip_address_t * rloc,
2436 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
2440 vlib_main_t *vm = lcm->vlib_main;
2442 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2444 clib_warning ("Can't allocate buffer for Map-Request!");
2448 b = vlib_get_buffer (vm, bi);
2450 /* leave some space for the encap headers */
2451 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2454 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2455 1 /* rloc probe */ , nonce_res);
2457 /* push outer ip header */
2458 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2466 static vlib_buffer_t *
2467 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2468 gid_address_t * seid, gid_address_t * deid,
2469 locator_set_t * loc_set, ip_address_t * mr_ip,
2470 ip_address_t * sloc, u8 is_smr_invoked,
2471 u64 * nonce_res, u32 * bi_res)
2475 gid_address_t *rlocs = 0;
2476 vlib_main_t *vm = lcm->vlib_main;
2478 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2480 clib_warning ("Can't allocate buffer for Map-Request!");
2484 b = vlib_get_buffer (vm, bi);
2487 /* leave some space for the encap headers */
2488 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2491 rlocs = build_itr_rloc_list (lcm, loc_set);
2493 if (MR_MODE_SRC_DST == lcm->map_request_mode
2494 && GID_ADDR_SRC_DST != gid_address_type (deid))
2497 memset (&sd, 0, sizeof (sd));
2498 build_src_dst (&sd, seid, deid);
2499 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2500 0 /* rloc probe */ , nonce_res);
2505 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2506 0 /* rloc probe */ , nonce_res);
2509 /* push ecm: udp-ip-lisp */
2510 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2512 /* push outer ip header */
2513 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2523 reset_pending_mr_counters (pending_map_request_t * r)
2525 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2529 #define foreach_msmr \
2535 elect_map_ ## name (lisp_cp_main_t * lcm) \
2538 vec_foreach (mr, lcm->map_ ## name ## s) \
2542 ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
2543 lcm->do_map_ ## name ## _election = 0; \
2552 free_map_register_records (mapping_t * maps)
2555 vec_foreach (map, maps) vec_free (map->locators);
2561 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2562 ip_address_t * probed_loc)
2565 locator_t *loc, new;
2566 ip_interface_address_t *ia = 0;
2568 ip_address_t *new_ip = &gid_address_ip (&new.address);
2571 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2573 vec_foreach (li, ls->locator_indices)
2575 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2580 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2581 loc->sw_if_index, 1 /* unnumbered */,
2583 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2585 ip_address_set (new_ip, addr, IP4);
2588 /* Add ipv6 locators */
2589 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2590 loc->sw_if_index, 1 /* unnumbered */,
2592 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2594 ip_address_set (new_ip, addr, IP6);
2598 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2601 vec_add1 (m->locators, new);
2606 build_map_register_record_list (lisp_cp_main_t * lcm)
2608 mapping_t *recs = 0, rec, *m;
2611 pool_foreach(m, lcm->mapping_pool,
2613 /* for now build only local mappings */
2618 add_locators (lcm, &rec, m->locator_set_index, NULL);
2619 vec_add1 (recs, rec);
2627 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2628 lisp_key_type_t key_id, u8 * key,
2629 u16 auth_data_len, u32 msg_len)
2631 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2632 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2634 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2635 (unsigned char *) map_reg_hdr, msg_len, NULL,
2637 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2642 static vlib_buffer_t *
2643 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2644 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2645 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2650 u32 bi, auth_data_len = 0, msg_len = 0;
2651 vlib_main_t *vm = lcm->vlib_main;
2653 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2655 clib_warning ("Can't allocate buffer for Map-Register!");
2659 b = vlib_get_buffer (vm, bi);
2661 /* leave some space for the encap headers */
2662 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2664 auth_data_len = auth_data_len_by_key_id (key_id);
2665 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2666 auth_data_len, nonce_res,
2669 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2672 /* push outer ip header */
2673 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2682 get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
2685 while (lcm->do_map_ ## name ## _election \
2686 | (0 == ip_fib_get_first_egress_ip_for_dst \
2687 (lcm, &lcm->active_map_ ##name, ip))) \
2689 if (0 == elect_map_ ## name (lcm)) \
2690 /* all map resolvers/servers are down */ \
2692 /* restart MR/MS checking by marking all of them up */ \
2693 vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
2702 /* CP output statistics */
2703 #define foreach_lisp_cp_output_error \
2704 _(MAP_REGISTERS_SENT, "map-registers sent") \
2705 _(RLOC_PROBES_SENT, "rloc-probes sent")
2706 static char *lisp_cp_output_error_strings[] = {
2707 #define _(sym,string) string,
2708 foreach_lisp_cp_output_error
2714 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2715 foreach_lisp_cp_output_error
2717 LISP_CP_OUTPUT_N_ERROR,
2718 } lisp_cp_output_error_t;
2721 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2722 vlib_frame_t * from_frame)
2727 /* dummy node used only for statistics */
2729 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2730 .function = lisp_cp_output,
2731 .name = "lisp-cp-output",
2732 .vector_size = sizeof (u32),
2733 .format_trace = format_lisp_cp_input_trace,
2734 .type = VLIB_NODE_TYPE_INTERNAL,
2736 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2737 .error_strings = lisp_cp_output_error_strings,
2739 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2742 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2748 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2749 u32 local_locator_set_index, ip_address_t * sloc,
2750 ip_address_t * rloc)
2757 u32 next_index, *to_next;
2758 gid_address_t *itr_rlocs;
2760 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2761 itr_rlocs = build_itr_rloc_list (lcm, ls);
2763 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2764 vec_free (itr_rlocs);
2768 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2770 next_index = (ip_addr_version (rloc) == IP4) ?
2771 ip4_lookup_node.index : ip6_lookup_node.index;
2773 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2775 /* Enqueue the packet */
2776 to_next = vlib_frame_vector_args (f);
2779 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2785 send_rloc_probes (lisp_cp_main_t * lcm)
2791 u32 si, rloc_probes_sent = 0;
2794 pool_foreach (e, lcm->fwd_entry_pool,
2796 if (vec_len (e->locator_pairs) == 0)
2799 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2802 clib_warning ("internal error: cannot find local eid %U in "
2803 "map-cache!", format_gid_address, &e->leid);
2806 lm = pool_elt_at_index (lcm->mapping_pool, si);
2808 /* get the best (lowest) priority */
2809 lprio = e->locator_pairs[0].priority;
2811 /* send rloc-probe for pair(s) with the best remote locator priority */
2812 vec_foreach (lp, e->locator_pairs)
2814 if (lp->priority != lprio)
2817 /* get first remote locator */
2818 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2825 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2826 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2832 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2834 pending_map_register_t *pmr;
2835 u32 bi, map_registers_sent = 0;
2840 u32 next_index, *to_next;
2841 mapping_t *records, *r, *group, *k;
2843 if (get_egress_map_server_ip (lcm, &sloc) < 0)
2846 records = build_map_register_record_list (lcm);
2850 vec_foreach (r, records)
2853 u8 key_id = r->key_id;
2856 continue; /* no secret key -> map-register cannot be sent */
2859 vec_add1 (group, r[0]);
2861 /* group mappings that share common key */
2862 for (k = r + 1; k < vec_end (records); k++)
2864 if (k->key_id != r->key_id)
2867 if (vec_is_equal (k->key, r->key))
2869 vec_add1 (group, k[0]);
2870 k->key = 0; /* don't process this mapping again */
2874 b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
2875 want_map_notif, group, key_id, key, &bi);
2880 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2882 next_index = (ip_addr_version (&lcm->active_map_server) == IP4) ?
2883 ip4_lookup_node.index : ip6_lookup_node.index;
2885 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2887 /* Enqueue the packet */
2888 to_next = vlib_frame_vector_args (f);
2891 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2892 map_registers_sent++;
2894 pool_get (lcm->pending_map_registers_pool, pmr);
2895 memset (pmr, 0, sizeof (*pmr));
2896 pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
2897 hash_set (lcm->map_register_messages_by_nonce, nonce,
2898 pmr - lcm->pending_map_registers_pool);
2900 free_map_register_records (records);
2902 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2903 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
2904 map_registers_sent);
2909 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
2910 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
2912 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
2913 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
2916 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
2917 gid_address_t * seid, gid_address_t * deid,
2918 u8 is_smr_invoked, u8 is_resend)
2920 u32 next_index, bi = 0, *to_next, map_index;
2924 locator_set_t *loc_set;
2926 pending_map_request_t *pmr, *duplicate_pmr = 0;
2930 /* if there is already a pending request remember it */
2933 pool_foreach(pmr, lcm->pending_map_requests_pool,
2935 if (!gid_address_cmp (&pmr->src, seid)
2936 && !gid_address_cmp (&pmr->dst, deid))
2938 duplicate_pmr = pmr;
2944 if (!is_resend && duplicate_pmr)
2946 /* don't send the request if there is a pending map request already */
2950 /* get locator-set for seid */
2951 if (!lcm->lisp_pitr && gid_address_type (deid) != GID_ADDR_NSH)
2953 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
2954 if (map_index == ~0)
2956 clib_warning ("No local mapping found in eid-table for %U!",
2957 format_gid_address, seid);
2961 map = pool_elt_at_index (lcm->mapping_pool, map_index);
2966 ("Mapping found for src eid %U is not marked as local!",
2967 format_gid_address, seid);
2970 ls_index = map->locator_set_index;
2976 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
2977 ls_index = map->locator_set_index;
2981 if (lcm->nsh_map_index == (u32) ~ 0)
2983 clib_warning ("No locator-set defined for NSH!");
2988 map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
2989 ls_index = map->locator_set_index;
2994 /* overwrite locator set if map-request itr-rlocs configured */
2995 if (~0 != lcm->mreq_itr_rlocs)
2997 ls_index = lcm->mreq_itr_rlocs;
3000 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
3002 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
3005 duplicate_pmr->to_be_removed = 1;
3009 /* build the encapsulated map request */
3010 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
3011 &lcm->active_map_resolver,
3012 &sloc, is_smr_invoked, &nonce, &bi);
3017 /* set fib index to default and lookup node */
3018 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3019 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3020 ip4_lookup_node.index : ip6_lookup_node.index;
3022 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3024 /* Enqueue the packet */
3025 to_next = vlib_frame_vector_args (f);
3028 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3031 /* if there is a pending request already update it */
3033 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
3035 /* remove the oldest nonce */
3036 u64 CLIB_UNUSED (tmp), *nonce_del;
3037 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
3038 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
3039 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
3042 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
3043 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3044 duplicate_pmr - lcm->pending_map_requests_pool);
3048 /* add map-request to pending requests table */
3049 pool_get (lcm->pending_map_requests_pool, pmr);
3050 memset (pmr, 0, sizeof (*pmr));
3051 gid_address_copy (&pmr->src, seid);
3052 gid_address_copy (&pmr->dst, deid);
3053 clib_fifo_add1 (pmr->nonces, nonce);
3054 pmr->is_smr_invoked = is_smr_invoked;
3055 reset_pending_mr_counters (pmr);
3056 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3057 pmr - lcm->pending_map_requests_pool);
3064 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
3066 ip4_header_t *ip4 = hdr;
3069 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
3071 ip_address_set (src, &ip4->src_address, IP4);
3072 ip_address_set (dst, &ip4->dst_address, IP4);
3077 ip_address_set (src, &ip6->src_address, IP6);
3078 ip_address_set (dst, &ip6->dst_address, IP6);
3083 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3087 u32 vni = ~0, table_id = ~0;
3089 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
3090 IP4 ? FIB_PROTOCOL_IP4 :
3096 vnip = hash_get (lcm->vni_by_table_id, table_id);
3100 clib_warning ("vrf %d is not mapped to any vni!", table_id);
3106 lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
3110 l2input_main_t *l2im = &l2input_main;
3111 l2_input_config_t *config;
3112 l2_bridge_domain_t *bd_config;
3114 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
3115 config = vec_elt_at_index (l2im->configs, sw_if_index0);
3116 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
3118 return bd_config->bd_id;
3122 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
3126 u32 bd = lisp_get_bd_from_buffer_eth (b);
3128 vnip = hash_get (lcm->vni_by_bd_id, bd);
3132 clib_warning ("bridge domain %d is not mapped to any vni!", bd);
3138 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3139 gid_address_t * src, gid_address_t * dst,
3142 ethernet_header_t *eh;
3144 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3146 memset (src, 0, sizeof (*src));
3147 memset (dst, 0, sizeof (*dst));
3149 gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
3150 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3152 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
3155 u8 version, preflen;
3157 gid_address_type (src) = GID_ADDR_IP_PREFIX;
3158 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
3160 ip = vlib_buffer_get_current (b);
3161 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
3163 version = gid_address_ip_version (src);
3164 preflen = ip_address_max_len (version);
3165 gid_address_ippref_len (src) = preflen;
3166 gid_address_ippref_len (dst) = preflen;
3168 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
3169 gid_address_vni (dst) = vni;
3170 gid_address_vni (src) = vni;
3172 else if (LISP_AFI_MAC == type)
3174 ethernet_arp_header_t *ah;
3176 eh = vlib_buffer_get_current (b);
3178 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
3180 ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
3181 if (clib_net_to_host_u16 (ah->opcode)
3182 != ETHERNET_ARP_OPCODE_request)
3185 gid_address_type (dst) = GID_ADDR_ARP;
3186 gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
3187 clib_memcpy (&gid_address_arp_ip4 (dst),
3188 &ah->ip4_over_ethernet[1].ip4, 4);
3192 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
3195 ip = (ip6_header_t *) (eh + 1);
3197 if (IP_PROTOCOL_ICMP6 == ip->protocol)
3199 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3200 ndh = ip6_next_header (ip);
3201 if (ndh->icmp.type == ICMP6_neighbor_solicitation)
3203 opt = (void *) (ndh + 1);
3204 if ((opt->header.type !=
3205 ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
3206 || (opt->header.n_data_u64s != 1))
3207 return; /* source link layer address option not present */
3209 gid_address_type (dst) = GID_ADDR_NDP;
3210 gid_address_ndp_bd (dst) =
3211 lisp_get_bd_from_buffer_eth (b);
3212 ip_address_set (&gid_address_arp_ndp_ip (dst),
3213 &ndh->target_address, IP6);
3219 gid_address_type (src) = GID_ADDR_MAC;
3220 gid_address_type (dst) = GID_ADDR_MAC;
3221 mac_copy (&gid_address_mac (src), eh->src_address);
3222 mac_copy (&gid_address_mac (dst), eh->dst_address);
3225 vni = lisp_get_vni_from_buffer_eth (lcm, b);
3227 gid_address_vni (dst) = vni;
3228 gid_address_vni (src) = vni;
3231 else if (LISP_AFI_LCAF == type)
3234 eh = vlib_buffer_get_current (b);
3236 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
3238 nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
3239 u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
3240 u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
3241 gid_address_nsh_spi (dst) = spi;
3242 gid_address_nsh_si (dst) = si;
3244 gid_address_type (dst) = GID_ADDR_NSH;
3250 lisp_cp_lookup_inline (vlib_main_t * vm,
3251 vlib_node_runtime_t * node,
3252 vlib_frame_t * from_frame, int overlay)
3254 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3255 u32 *from, *to_next, di, si;
3256 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3257 u32 pkts_mapped = 0, next_index;
3258 uword n_left_from, n_left_to_next;
3259 vnet_main_t *vnm = vnet_get_main ();
3261 from = vlib_frame_vector_args (from_frame);
3262 n_left_from = from_frame->n_vectors;
3263 next_index = node->cached_next_index;
3265 while (n_left_from > 0)
3267 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
3269 while (n_left_from > 0 && n_left_to_next > 0)
3271 u32 pi0, sw_if_index0, next0;
3274 gid_address_t src, dst;
3275 ethernet_arp_header_t *arp0;
3276 ethernet_header_t *eth0;
3277 vnet_hw_interface_t *hw_if0;
3278 ethernet_header_t *eh0;
3279 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3287 n_left_to_next -= 1;
3289 b0 = vlib_get_buffer (vm, pi0);
3291 /* src/dst eid pair */
3292 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
3294 if (gid_address_type (&dst) == GID_ADDR_ARP)
3296 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3297 if (GID_LOOKUP_MISS_L2 == mac0)
3300 /* send ARP reply */
3301 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3302 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3304 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3306 eth0 = vlib_buffer_get_current (b0);
3307 arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
3309 arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
3310 arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
3311 clib_memcpy (arp0->ip4_over_ethernet[0].ethernet,
3313 clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
3314 &gid_address_arp_ip4 (&dst), 4);
3316 /* Hardware must be ethernet-like. */
3317 ASSERT (vec_len (hw_if0->hw_address) == 6);
3319 clib_memcpy (eth0->dst_address, eth0->src_address, 6);
3320 clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
3322 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
3323 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3326 else if (gid_address_type (&dst) == GID_ADDR_NDP)
3328 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3329 if (GID_LOOKUP_MISS_L2 == mac0)
3332 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3333 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3335 eh0 = vlib_buffer_get_current (b0);
3336 ip0 = (ip6_header_t *) (eh0 + 1);
3337 ndh = ip6_next_header (ip0);
3339 ip0->dst_address = ip0->src_address;
3340 ip0->src_address = ndh->target_address;
3341 ip0->hop_limit = 255;
3342 opt = (void *) (ndh + 1);
3344 ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
3345 clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
3346 ndh->icmp.type = ICMP6_neighbor_advertisement;
3347 ndh->advertisement_flags = clib_host_to_net_u32
3348 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
3349 ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
3350 ndh->icmp.checksum = 0;
3351 ndh->icmp.checksum =
3352 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
3354 clib_memcpy (eh0->dst_address, eh0->src_address, 6);
3355 clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
3358 [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
3359 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3363 /* if we have remote mapping for destination already in map-chache
3364 add forwarding tunnel directly. If not send a map-request */
3365 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
3369 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
3370 /* send a map-request also in case of negative mapping entry
3371 with corresponding action */
3372 if (m->action == LISP_SEND_MAP_REQUEST)
3374 /* send map-request */
3375 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3376 0 /* is_resend */ );
3381 if (GID_ADDR_NSH != gid_address_type (&dst))
3383 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
3387 si = lcm->nsh_map_index;
3391 dp_add_fwd_entry_from_mt (si, di);
3397 /* send map-request */
3398 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3399 0 /* is_resend */ );
3404 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
3405 next0 = LISP_CP_LOOKUP_NEXT_DROP;
3407 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3409 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
3412 memset (tr, 0, sizeof (*tr));
3413 gid_address_copy (&tr->dst_eid, &dst);
3414 ip_address_copy (&tr->map_resolver_ip,
3415 &lcm->active_map_resolver);
3417 gid_address_free (&dst);
3418 gid_address_free (&src);
3419 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3421 n_left_to_next, pi0, next0);
3424 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
3426 vlib_node_increment_counter (vm, node->node_index,
3427 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
3429 return from_frame->n_vectors;
3433 lisp_cp_lookup_ip4 (vlib_main_t * vm,
3434 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3436 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
3440 lisp_cp_lookup_ip6 (vlib_main_t * vm,
3441 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3443 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
3447 lisp_cp_lookup_l2 (vlib_main_t * vm,
3448 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3450 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
3454 lisp_cp_lookup_nsh (vlib_main_t * vm,
3455 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3457 /* TODO decide if NSH should be propagated as LCAF or not */
3458 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
3462 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
3463 .function = lisp_cp_lookup_ip4,
3464 .name = "lisp-cp-lookup-ip4",
3465 .vector_size = sizeof (u32),
3466 .format_trace = format_lisp_cp_lookup_trace,
3467 .type = VLIB_NODE_TYPE_INTERNAL,
3469 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3470 .error_strings = lisp_cp_lookup_error_strings,
3472 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3475 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3476 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3482 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
3483 .function = lisp_cp_lookup_ip6,
3484 .name = "lisp-cp-lookup-ip6",
3485 .vector_size = sizeof (u32),
3486 .format_trace = format_lisp_cp_lookup_trace,
3487 .type = VLIB_NODE_TYPE_INTERNAL,
3489 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3490 .error_strings = lisp_cp_lookup_error_strings,
3492 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3495 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3496 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3502 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
3503 .function = lisp_cp_lookup_l2,
3504 .name = "lisp-cp-lookup-l2",
3505 .vector_size = sizeof (u32),
3506 .format_trace = format_lisp_cp_lookup_trace,
3507 .type = VLIB_NODE_TYPE_INTERNAL,
3509 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3510 .error_strings = lisp_cp_lookup_error_strings,
3512 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3515 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3516 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3522 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
3523 .function = lisp_cp_lookup_nsh,
3524 .name = "lisp-cp-lookup-nsh",
3525 .vector_size = sizeof (u32),
3526 .format_trace = format_lisp_cp_lookup_trace,
3527 .type = VLIB_NODE_TYPE_INTERNAL,
3529 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3530 .error_strings = lisp_cp_lookup_error_strings,
3532 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3535 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3536 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3541 /* lisp_cp_input statistics */
3542 #define foreach_lisp_cp_input_error \
3544 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
3545 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
3546 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
3547 _(MAP_REPLIES_RECEIVED, "map-replies received")
3549 static char *lisp_cp_input_error_strings[] = {
3550 #define _(sym,string) string,
3551 foreach_lisp_cp_input_error
3557 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
3558 foreach_lisp_cp_input_error
3560 LISP_CP_INPUT_N_ERROR,
3561 } lisp_cp_input_error_t;
3565 gid_address_t dst_eid;
3566 ip4_address_t map_resolver_ip;
3567 } lisp_cp_input_trace_t;
3570 format_lisp_cp_input_trace (u8 * s, va_list * args)
3572 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
3573 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
3574 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
3575 va_arg (*args, lisp_cp_input_trace_t *);
3577 s = format (s, "LISP-CP-INPUT: TODO");
3582 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3585 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3586 memset (adj_args, 0, sizeof (adj_args[0]));
3588 m = pool_elt_at_index (lcm->mapping_pool, mi);
3590 gid_address_copy (&adj_args->reid, &m->eid);
3591 adj_args->is_add = 0;
3592 if (vnet_lisp_add_del_adjacency (adj_args))
3593 clib_warning ("failed to del adjacency!");
3595 vnet_lisp_del_mapping (&m->eid, NULL);
3596 mapping_delete_timer (lcm, mi);
3600 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
3601 f64 expiration_time)
3604 u64 now = clib_cpu_time_now ();
3605 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
3606 u64 exp_clock_time = now + expiration_time * cpu_cps;
3608 m = pool_elt_at_index (lcm->mapping_pool, mi);
3611 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
3615 process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3618 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
3619 mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
3625 if (m->delete_after_expiration)
3627 remove_expired_mapping (lcm, mi);
3631 fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
3635 fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
3637 memset (a, 0, sizeof (*a));
3638 a->rmt_eid = fe->reid;
3640 a->lcl_eid = fe->leid;
3641 a->vni = gid_address_vni (&fe->reid);
3643 rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
3647 if (m->almost_expired)
3649 m->almost_expired = 0; /* reset flag */
3652 if (m->packets != c.packets)
3654 /* mapping is in use, re-fetch */
3655 map_request_args_t mr_args;
3656 memset (&mr_args, 0, sizeof (mr_args));
3657 mr_args.seid = fe->leid;
3658 mr_args.deid = fe->reid;
3660 send_map_request_thread_fn (&mr_args);
3663 remove_expired_mapping (lcm, mi);
3666 remove_expired_mapping (lcm, mi);
3670 m->almost_expired = 1;
3671 mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
3675 m->packets = c.packets;
3677 m->delete_after_expiration = 1;
3682 map_records_arg_free (map_records_arg_t * a)
3684 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3686 vec_foreach (m, a->mappings)
3688 vec_free (m->locators);
3689 gid_address_free (&m->eid);
3691 pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
3695 process_map_reply (map_records_arg_t * a)
3698 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3699 u32 dst_map_index = 0;
3700 pending_map_request_t *pmr;
3705 if (a->is_rloc_probe)
3708 /* Check pending requests table and nonce */
3709 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3712 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3715 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3717 vec_foreach (m, a->mappings)
3719 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
3720 memset (m_args, 0, sizeof (m_args[0]));
3721 gid_address_copy (&m_args->eid, &m->eid);
3722 m_args->action = m->action;
3723 m_args->authoritative = m->authoritative;
3724 m_args->ttl = m->ttl;
3725 m_args->is_static = 0;
3727 /* insert/update mappings cache */
3728 vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
3730 if (dst_map_index == (u32) ~ 0)
3735 /* try to program forwarding only if mapping saved or updated */
3736 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3737 memset (adj_args, 0, sizeof (adj_args[0]));
3739 gid_address_copy (&adj_args->leid, &pmr->src);
3740 gid_address_copy (&adj_args->reid, &m->eid);
3741 adj_args->is_add = 1;
3743 if (vnet_lisp_add_del_adjacency (adj_args))
3744 clib_warning ("failed to add adjacency!");
3747 if ((u32) ~ 0 != m->ttl)
3748 mapping_start_expiration_timer (lcm, dst_map_index, MAPPING_TIMEOUT);
3751 /* remove pending map request entry */
3754 clib_fifo_foreach (noncep, pmr->nonces, ({
3755 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3759 clib_fifo_free (pmr->nonces);
3760 pool_put (lcm->pending_map_requests_pool, pmr);
3768 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3769 lisp_key_type_t key_id, u8 * key)
3775 auth_data_len = auth_data_len_by_key_id (key_id);
3776 if ((u16) ~ 0 == auth_data_len)
3778 clib_warning ("invalid length for key_id %d!", key_id);
3782 /* save auth data */
3783 vec_validate (auth_data, auth_data_len - 1);
3784 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3786 /* clear auth data */
3787 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3789 /* get hash of the message */
3790 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3791 (unsigned char *) h, msg_len, NULL, NULL);
3793 result = memcmp (code, auth_data, auth_data_len);
3795 vec_free (auth_data);
3801 process_map_notify (map_records_arg_t * a)
3803 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3806 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3809 clib_warning ("No pending map-register entry with nonce %lu!",
3815 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
3816 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3818 /* reset map-notify counter */
3819 lcm->expired_map_registers = 0;
3823 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3827 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3830 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3834 return pool_elt_at_index (lcm->mapping_pool, mi);
3838 * When map-notify is received it is necessary that all EIDs in the record
3839 * list share common key. The key is then used to verify authentication
3840 * data in map-notify message.
3843 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3844 u32 key_id, u8 ** key_out)
3846 u32 i, len = vec_len (maps);
3849 /* get key of the first mapping */
3850 m = get_mapping (lcm, &maps[0].eid);
3854 key_out[0] = m->key;
3856 for (i = 1; i < len; i++)
3858 m = get_mapping (lcm, &maps[i].eid);
3862 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3864 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3872 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3874 locator_t *locators = 0;
3880 memset (&m, 0, sizeof (m));
3882 /* parse record eid */
3883 for (i = 0; i < count; i++)
3886 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3889 clib_warning ("Failed to parse mapping record!");
3890 vec_foreach (loc, locators) locator_free (loc);
3891 vec_free (locators);
3895 m.locators = locators;
3896 gid_address_copy (&m.eid, &deid);
3897 vec_add1 (a->mappings, m);
3903 static map_records_arg_t *
3904 map_record_args_get ()
3906 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3907 map_records_arg_t *rec;
3911 pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
3913 map_records_arg_free (rec);
3917 pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
3921 static map_records_arg_t *
3922 parse_map_notify (vlib_buffer_t * b)
3925 map_notify_hdr_t *mnotif_hdr;
3926 lisp_key_type_t key_id;
3927 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3930 u16 auth_data_len = 0;
3932 map_records_arg_t *a;
3934 a = map_record_args_get ();
3935 memset (a, 0, sizeof (*a));
3936 mnotif_hdr = vlib_buffer_get_current (b);
3937 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3938 memset (&deid, 0, sizeof (deid));
3940 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3941 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3942 auth_data_len = auth_data_len_by_key_id (key_id);
3944 /* advance buffer by authentication data */
3945 vlib_buffer_pull (b, auth_data_len);
3947 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3948 rc = parse_map_records (b, a, record_count);
3951 map_records_arg_free (a);
3955 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3958 map_records_arg_free (a);
3962 /* verify authentication data */
3963 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
3964 - (u8 *) mnotif_hdr, key_id, key))
3966 clib_warning ("Map-notify auth data verification failed for nonce "
3967 "0x%lx!", a->nonce);
3968 map_records_arg_free (a);
3974 static vlib_buffer_t *
3975 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
3976 ip_address_t * dst, u64 nonce, u8 probe_bit,
3977 mapping_t * records, u16 dst_port, u32 * bi_res)
3981 vlib_main_t *vm = lcm->vlib_main;
3983 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
3985 clib_warning ("Can't allocate buffer for Map-Register!");
3989 b = vlib_get_buffer (vm, bi);
3991 /* leave some space for the encap headers */
3992 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
3994 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
3996 /* push outer ip header */
3997 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
4004 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
4005 u8 probe_bit, u64 nonce, u16 dst_port,
4006 ip_address_t * probed_loc)
4012 u32 next_index, *to_next;
4013 mapping_t *records = 0, *m;
4015 m = pool_elt_at_index (lcm->mapping_pool, mi);
4019 vec_add1 (records, m[0]);
4020 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
4021 memset (&src, 0, sizeof (src));
4023 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
4025 clib_warning ("can't find inteface address for %U", format_ip_address,
4030 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
4034 free_map_register_records (records);
4036 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
4037 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
4038 ip4_lookup_node.index : ip6_lookup_node.index;
4040 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
4042 /* Enqueue the packet */
4043 to_next = vlib_frame_vector_args (f);
4046 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
4051 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
4053 const i32 start = vnet_buffer (b)->l3_hdr_offset;
4054 if (start < 0 && start < -sizeof (b->pre_data))
4060 *ip_hdr = b->data + start;
4061 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
4066 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
4067 lisp_cp_main_t * lcm, vlib_buffer_t * b)
4070 ip_address_t *dst_loc = 0, probed_loc, src_loc;
4072 map_request_hdr_t *mreq_hdr;
4073 gid_address_t src, dst;
4075 u32 i, len = 0, rloc_probe_recv = 0;
4076 gid_address_t *itr_rlocs = 0;
4078 mreq_hdr = vlib_buffer_get_current (b);
4079 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
4082 ("Only SMR Map-Requests and RLOC probe supported for now!");
4086 vlib_buffer_pull (b, sizeof (*mreq_hdr));
4087 nonce = MREQ_NONCE (mreq_hdr);
4090 len = lisp_msg_parse_addr (b, &src);
4094 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
4095 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
4099 /* parse eid records and send SMR-invoked map-requests */
4100 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
4102 memset (&dst, 0, sizeof (dst));
4103 len = lisp_msg_parse_eid_rec (b, &dst);
4106 clib_warning ("Can't parse map-request EID-record");
4110 if (MREQ_SMR (mreq_hdr))
4112 /* send SMR-invoked map-requests */
4113 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
4115 else if (MREQ_RLOC_PROBE (mreq_hdr))
4117 find_ip_header (b, &ip_hdr);
4120 clib_warning ("Cannot find the IP header!");
4124 memset (&m, 0, sizeof (m));
4125 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
4127 // TODO: select best locator; for now use the first one
4128 dst_loc = &gid_address_ip (&itr_rlocs[0]);
4130 /* get src/dst IP addresses */
4131 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
4133 // TODO get source port from buffer
4134 u16 src_port = LISP_CONTROL_PORT;
4136 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
4137 src_port, &probed_loc);
4142 vlib_node_increment_counter (vm, node->node_index,
4143 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
4145 vec_free (itr_rlocs);
4149 parse_map_reply (vlib_buffer_t * b)
4156 map_reply_hdr_t *mrep_hdr;
4157 map_records_arg_t *a;
4159 a = map_record_args_get ();
4160 memset (a, 0, sizeof (*a));
4162 locator_t *locators;
4164 mrep_hdr = vlib_buffer_get_current (b);
4165 a->nonce = MREP_NONCE (mrep_hdr);
4166 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
4167 if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
4172 vlib_buffer_pull (b, sizeof (*mrep_hdr));
4174 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
4176 memset (&m, 0, sizeof (m));
4178 h = vlib_buffer_get_current (b);
4180 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
4181 m.action = MAP_REC_ACTION (h);
4182 m.authoritative = MAP_REC_AUTH (h);
4184 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
4187 clib_warning ("Failed to parse mapping record!");
4188 map_records_arg_free (a);
4192 m.locators = locators;
4193 gid_address_copy (&m.eid, &deid);
4194 vec_add1 (a->mappings, m);
4200 queue_map_reply_for_processing (map_records_arg_t * a)
4202 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
4206 queue_map_notify_for_processing (map_records_arg_t * a)
4208 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
4212 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
4213 vlib_frame_t * from_frame)
4215 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
4216 map_notifies_recv = 0;
4217 lisp_msg_type_e type;
4218 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4219 map_records_arg_t *a;
4221 from = vlib_frame_vector_args (from_frame);
4222 n_left_from = from_frame->n_vectors;
4225 while (n_left_from > 0)
4227 u32 n_left_to_next_drop;
4229 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4230 to_next_drop, n_left_to_next_drop);
4231 while (n_left_from > 0 && n_left_to_next_drop > 0)
4239 to_next_drop[0] = bi0;
4241 n_left_to_next_drop -= 1;
4243 b0 = vlib_get_buffer (vm, bi0);
4245 type = lisp_msg_type (vlib_buffer_get_current (b0));
4248 case LISP_MAP_REPLY:
4249 a = parse_map_reply (b0);
4252 if (a->is_rloc_probe)
4253 rloc_probe_rep_recv++;
4254 queue_map_reply_for_processing (a);
4257 case LISP_MAP_REQUEST:
4258 process_map_request (vm, node, lcm, b0);
4260 case LISP_MAP_NOTIFY:
4261 a = parse_map_notify (b0);
4264 map_notifies_recv++;
4265 queue_map_notify_for_processing (a);
4269 clib_warning ("Unsupported LISP message type %d", type);
4273 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
4275 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
4281 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4282 n_left_to_next_drop);
4284 vlib_node_increment_counter (vm, node->node_index,
4285 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
4286 rloc_probe_rep_recv);
4287 vlib_node_increment_counter (vm, node->node_index,
4288 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
4290 return from_frame->n_vectors;
4294 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
4295 .function = lisp_cp_input,
4296 .name = "lisp-cp-input",
4297 .vector_size = sizeof (u32),
4298 .format_trace = format_lisp_cp_input_trace,
4299 .type = VLIB_NODE_TYPE_INTERNAL,
4301 .n_errors = LISP_CP_INPUT_N_ERROR,
4302 .error_strings = lisp_cp_input_error_strings,
4304 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
4307 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
4313 lisp_cp_init (vlib_main_t * vm)
4315 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4316 clib_error_t *error = 0;
4317 vlib_thread_main_t *vtm = vlib_get_thread_main ();
4320 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
4323 lcm->im4 = &ip4_main;
4324 lcm->im6 = &ip6_main;
4325 lcm->vlib_main = vm;
4326 lcm->vnet_main = vnet_get_main ();
4327 lcm->mreq_itr_rlocs = ~0;
4330 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
4331 memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
4333 gid_dictionary_init (&lcm->mapping_index_by_gid);
4334 lcm->do_map_resolver_election = 1;
4335 lcm->do_map_server_election = 1;
4336 lcm->map_request_mode = MR_MODE_DST_ONLY;
4338 num_threads = 1 /* main thread */ + vtm->n_threads;
4339 vec_validate (lcm->map_records_args_pool, num_threads - 1);
4341 /* default vrf mapped to vni 0 */
4342 hash_set (lcm->table_id_by_vni, 0, 0);
4343 hash_set (lcm->vni_by_table_id, 0, 0);
4345 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
4346 lisp_cp_input_node.index, 1 /* is_ip4 */ );
4347 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
4348 lisp_cp_input_node.index, 0 /* is_ip4 */ );
4350 u64 now = clib_cpu_time_now ();
4351 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
4352 lcm->nsh_map_index = ~0;
4353 lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
4354 lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
4355 lcm->expired_map_registers = 0;
4356 lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
4361 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
4362 lisp_api_stats_t * stat, lisp_stats_key_t * key,
4366 vlib_combined_counter_main_t *cm = &lgm->counters;
4367 lisp_gpe_fwd_entry_key_t fwd_key;
4368 const lisp_gpe_tunnel_t *lgt;
4371 memset (stat, 0, sizeof (*stat));
4372 memset (&fwd_key, 0, sizeof (fwd_key));
4374 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
4377 gid_to_dp_address (&fe->reid, &stat->deid);
4378 gid_to_dp_address (&fe->leid, &stat->seid);
4379 stat->vni = gid_address_vni (&fe->reid);
4381 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
4382 stat->loc_rloc = lgt->key->lcl;
4383 stat->rmt_rloc = lgt->key->rmt;
4385 vlib_get_combined_counter (cm, stats_index, &v);
4391 vnet_lisp_get_stats (void)
4393 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
4394 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4395 lisp_api_stats_t *stats = 0, stat;
4396 lisp_stats_key_t *key;
4400 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
4402 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
4403 vec_add1 (stats, stat);
4411 send_map_request_thread_fn (void *arg)
4413 map_request_args_t *a = arg;
4414 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4417 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4419 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4425 queue_map_request (gid_address_t * seid, gid_address_t * deid,
4426 u8 smr_invoked, u8 is_resend)
4428 map_request_args_t a;
4430 a.is_resend = is_resend;
4431 gid_address_copy (&a.seid, seid);
4432 gid_address_copy (&a.deid, deid);
4433 a.smr_invoked = smr_invoked;
4435 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
4436 (u8 *) & a, sizeof (a));
4441 * Take an action with a pending map request depending on expiration time
4442 * and re-try counters.
4445 update_pending_request (pending_map_request_t * r, f64 dt)
4447 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4450 if (r->time_to_expire - dt < 0)
4451 /* it's time to decide what to do with this pending request */
4453 if (r->retries_num >= NUMBER_OF_RETRIES)
4454 /* too many retries -> assume current map resolver is not available */
4456 mr = get_map_resolver (&lcm->active_map_resolver);
4459 clib_warning ("Map resolver %U not found - probably deleted "
4460 "by the user recently.", format_ip_address,
4461 &lcm->active_map_resolver);
4465 clib_warning ("map resolver %U is unreachable, ignoring",
4466 format_ip_address, &lcm->active_map_resolver);
4468 /* mark current map resolver unavailable so it won't be
4469 * selected next time */
4471 mr->last_update = vlib_time_now (lcm->vlib_main);
4474 reset_pending_mr_counters (r);
4475 elect_map_resolver (lcm);
4477 /* try to find a next eligible map resolver and re-send */
4478 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4484 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4487 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
4491 r->time_to_expire -= dt;
4495 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
4498 pending_map_request_t *pmr;
4499 u32 *to_be_removed = 0, *pmr_index;
4502 pool_foreach (pmr, lcm->pending_map_requests_pool,
4504 if (pmr->to_be_removed)
4506 clib_fifo_foreach (nonce, pmr->nonces, ({
4507 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
4510 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
4515 vec_foreach (pmr_index, to_be_removed)
4516 pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
4518 vec_free (to_be_removed);
4522 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
4524 static f64 time_left = RLOC_PROBING_INTERVAL;
4526 if (!lcm->is_enabled || !lcm->rloc_probing)
4532 time_left = RLOC_PROBING_INTERVAL;
4533 send_rloc_probes (lcm);
4538 update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
4540 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4544 r->time_to_expire -= dt;
4546 if (r->time_to_expire < 0)
4548 lcm->expired_map_registers++;
4550 if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
4552 ms = get_map_server (&lcm->active_map_server);
4555 clib_warning ("Map server %U not found - probably deleted "
4556 "by the user recently.", format_ip_address,
4557 &lcm->active_map_server);
4561 clib_warning ("map server %U is unreachable, ignoring",
4562 format_ip_address, &lcm->active_map_server);
4564 /* mark current map server unavailable so it won't be
4565 * elected next time */
4567 ms->last_update = vlib_time_now (lcm->vlib_main);
4570 elect_map_server (lcm);
4572 /* indication for deleting all pending map registers */
4574 lcm->expired_map_registers = 0;
4579 /* delete pending map register */
4587 update_map_register (lisp_cp_main_t * lcm, f64 dt)
4589 u32 *to_be_removed = 0, *pmr_index;
4590 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
4591 static u64 mreg_sent_counter = 0;
4593 pending_map_register_t *pmr;
4596 if (!lcm->is_enabled || !lcm->map_registering)
4600 pool_foreach (pmr, lcm->pending_map_registers_pool,
4602 if (!update_pending_map_register (pmr, dt, &del_all))
4606 vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
4613 /* delete all pending map register messages so they won't
4614 * trigger another map server election.. */
4615 pool_free (lcm->pending_map_registers_pool);
4616 hash_free (lcm->map_register_messages_by_nonce);
4618 /* ..and trigger registration against next map server (if any) */
4623 vec_foreach (pmr_index, to_be_removed)
4624 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4627 vec_free (to_be_removed);
4632 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
4633 time_left = MAP_REGISTER_INTERVAL;
4636 mreg_sent_counter++;
4637 time_left = QUICK_MAP_REGISTER_INTERVAL;
4639 send_map_register (lcm, 1 /* want map notify */ );
4644 send_map_resolver_service (vlib_main_t * vm,
4645 vlib_node_runtime_t * rt, vlib_frame_t * f)
4649 pending_map_request_t *pmr;
4650 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4654 vlib_process_wait_for_event_or_clock (vm, period);
4656 /* currently no signals are expected - just wait for clock */
4657 (void) vlib_process_get_events (vm, 0);
4660 pool_foreach (pmr, lcm->pending_map_requests_pool,
4662 if (!pmr->to_be_removed)
4663 update_pending_request (pmr, period);
4667 remove_dead_pending_map_requests (lcm);
4669 update_map_register (lcm, period);
4670 update_rloc_probing (lcm, period);
4672 u64 now = clib_cpu_time_now ();
4674 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
4675 if (vec_len (expired) > 0)
4678 vec_foreach (mi, expired)
4680 process_expired_mapping (lcm, mi[0]);
4682 _vec_len (expired) = 0;
4691 vnet_lisp_stats_enable_disable (u8 enable)
4693 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4695 if (vnet_lisp_enable_disable_status () == 0)
4696 return VNET_API_ERROR_LISP_DISABLED;
4699 lcm->flags |= LISP_FLAG_STATS_ENABLED;
4701 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
4707 vnet_lisp_stats_enable_disable_state (void)
4709 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4711 if (vnet_lisp_enable_disable_status () == 0)
4712 return VNET_API_ERROR_LISP_DISABLED;
4714 return lcm->flags & LISP_FLAG_STATS_ENABLED;
4718 VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
4719 .function = send_map_resolver_service,
4720 .type = VLIB_NODE_TYPE_PROCESS,
4721 .name = "lisp-retry-service",
4722 .process_log2_n_stack_bytes = 16,
4727 vnet_lisp_set_transport_protocol (u8 protocol)
4729 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4731 if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
4732 protocol > LISP_TRANSPORT_PROTOCOL_API)
4733 return VNET_API_ERROR_INVALID_ARGUMENT;
4735 lcm->transport_protocol = protocol;
4739 lisp_transport_protocol_t
4740 vnet_lisp_get_transport_protocol (void)
4742 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4743 return lcm->transport_protocol;
4746 VLIB_INIT_FUNCTION (lisp_cp_init);
4749 * fd.io coding-style-patch-verification: ON
4752 * eval: (c-set-style "gnu")