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;
1349 remove_overlapping_sub_prefixes (lcm, &a->eid, 0 == ls_args->locators);
1351 ls_args->is_add = 1;
1352 ls_args->index = ~0;
1354 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1358 a->locator_set_index = ls_index;
1359 vnet_lisp_map_cache_add_del (a, &dst_map_index);
1362 res_map_index[0] = dst_map_index;
1370 * Removes a mapping. Does not program forwarding.
1372 * @param eid end-host indetifier
1373 * @param res_map_index index of the removed mapping
1374 * @return return code
1377 vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index)
1379 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1380 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1381 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1385 memset (ls_args, 0, sizeof (ls_args[0]));
1386 memset (m_args, 0, sizeof (m_args[0]));
1388 res_map_index[0] = ~0;
1390 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1391 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1393 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1395 clib_warning ("cannot delete mapping for eid %U",
1396 format_gid_address, eid);
1401 gid_address_copy (&m_args->eid, eid);
1402 m_args->locator_set_index = old_map->locator_set_index;
1404 /* delete mapping associated from map-cache */
1405 vnet_lisp_map_cache_add_del (m_args, 0);
1407 ls_args->is_add = 0;
1408 ls_args->index = old_map->locator_set_index;
1410 /* delete locator set */
1411 vnet_lisp_add_del_locator_set (ls_args, 0);
1413 /* delete timer associated to the mapping if any */
1414 if (old_map->timer_set)
1415 mapping_delete_timer (lcm, mi);
1417 /* return old mapping index */
1419 res_map_index[0] = mi;
1426 vnet_lisp_clear_all_remote_adjacencies (void)
1429 u32 mi, *map_indices = 0, *map_indexp;
1430 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1431 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1432 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1435 pool_foreach_index (mi, lcm->mapping_pool,
1437 vec_add1 (map_indices, mi);
1441 vec_foreach (map_indexp, map_indices)
1443 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1446 dp_del_fwd_entry (lcm, map_indexp[0]);
1448 dm_args->is_add = 0;
1449 gid_address_copy (&dm_args->eid, &map->eid);
1450 dm_args->locator_set_index = map->locator_set_index;
1452 /* delete mapping associated to fwd entry */
1453 vnet_lisp_map_cache_add_del (dm_args, 0);
1457 ls->index = map->locator_set_index;
1458 /* delete locator set */
1459 rv = vnet_lisp_add_del_locator_set (ls, 0);
1467 vec_free (map_indices);
1472 * Adds adjacency or removes forwarding entry associated to remote mapping.
1473 * Note that adjacencies are not stored, they only result in forwarding entries
1477 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1479 lisp_cp_main_t *lcm = &lisp_control_main;
1480 u32 local_mi, remote_mi = ~0;
1482 if (vnet_lisp_enable_disable_status () == 0)
1484 clib_warning ("LISP is disabled!");
1485 return VNET_API_ERROR_LISP_DISABLED;
1488 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1489 &a->reid, &a->leid);
1490 if (GID_LOOKUP_MISS == remote_mi)
1492 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1493 format_gid_address, &a->reid);
1500 /* check if source eid has an associated mapping. If pitr mode is on,
1501 * just use the pitr's mapping */
1503 local_mi = lcm->pitr_map_index;
1506 if (gid_address_type (&a->reid) == GID_ADDR_NSH)
1508 if (lcm->nsh_map_index == ~0)
1509 local_mi = GID_LOOKUP_MISS;
1511 local_mi = lcm->nsh_map_index;
1515 local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1520 if (GID_LOOKUP_MISS == local_mi)
1522 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1523 format_gid_address, &a->leid);
1528 /* update forwarding */
1529 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1532 dp_del_fwd_entry (lcm, remote_mi);
1538 vnet_lisp_set_map_request_mode (u8 mode)
1540 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1542 if (vnet_lisp_enable_disable_status () == 0)
1544 clib_warning ("LISP is disabled!");
1545 return VNET_API_ERROR_LISP_DISABLED;
1548 if (mode >= _MR_MODE_MAX)
1550 clib_warning ("Invalid LISP map request mode %d!", mode);
1551 return VNET_API_ERROR_INVALID_ARGUMENT;
1554 lcm->map_request_mode = mode;
1559 vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
1561 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1562 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
1563 u32 locator_set_index = ~0;
1567 if (vnet_lisp_enable_disable_status () == 0)
1569 clib_warning ("LISP is disabled!");
1570 return VNET_API_ERROR_LISP_DISABLED;
1575 if (lcm->nsh_map_index == (u32) ~ 0)
1577 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1580 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1583 locator_set_index = p[0];
1585 pool_get (lcm->mapping_pool, m);
1586 memset (m, 0, sizeof *m);
1587 m->locator_set_index = locator_set_index;
1590 lcm->nsh_map_index = m - lcm->mapping_pool;
1592 if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
1598 if (lcm->nsh_map_index != (u32) ~ 0)
1600 /* remove NSH mapping */
1601 pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
1602 lcm->nsh_map_index = ~0;
1603 vnet_lisp_gpe_del_nsh_iface (lgm);
1610 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1612 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1613 u32 locator_set_index = ~0;
1617 if (vnet_lisp_enable_disable_status () == 0)
1619 clib_warning ("LISP is disabled!");
1620 return VNET_API_ERROR_LISP_DISABLED;
1623 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1626 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1629 locator_set_index = p[0];
1633 pool_get (lcm->mapping_pool, m);
1634 m->locator_set_index = locator_set_index;
1637 lcm->pitr_map_index = m - lcm->mapping_pool;
1639 /* enable pitr mode */
1644 /* remove pitr mapping */
1645 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1647 /* disable pitr mode */
1654 vnet_lisp_map_register_fallback_threshold_set (u32 value)
1656 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1659 return VNET_API_ERROR_INVALID_ARGUMENT;
1662 lcm->max_expired_map_registers = value;
1667 vnet_lisp_map_register_fallback_threshold_get (void)
1669 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1670 return lcm->max_expired_map_registers;
1674 * Configure Proxy-ETR
1676 * @param ip PETR's IP address
1677 * @param is_add Flag that indicates if this is an addition or removal
1679 * return 0 on success
1682 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1684 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1687 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1690 if (vnet_lisp_enable_disable_status () == 0)
1692 clib_warning ("LISP is disabled!");
1693 return VNET_API_ERROR_LISP_DISABLED;
1696 memset (ls_args, 0, sizeof (*ls_args));
1700 /* Create dummy petr locator-set */
1701 memset (&loc, 0, sizeof (loc));
1702 gid_address_from_ip (&loc.address, ip);
1704 loc.state = loc.weight = 1;
1707 ls_args->is_add = 1;
1708 ls_args->index = ~0;
1709 vec_add1 (ls_args->locators, loc);
1710 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1712 /* Add petr mapping */
1713 pool_get (lcm->mapping_pool, m);
1714 m->locator_set_index = ls_index;
1715 lcm->petr_map_index = m - lcm->mapping_pool;
1717 /* Enable use-petr */
1718 lcm->flags |= LISP_FLAG_USE_PETR;
1722 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1724 /* Remove petr locator */
1725 ls_args->is_add = 0;
1726 ls_args->index = m->locator_set_index;
1727 vnet_lisp_add_del_locator_set (ls_args, 0);
1729 /* Remove petr mapping */
1730 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1732 /* Disable use-petr */
1733 lcm->flags &= ~LISP_FLAG_USE_PETR;
1738 /* cleans locator to locator-set data and removes locators not part of
1739 * any locator-set */
1741 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1743 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1744 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1745 for (i = 0; i < vec_len (ls->locator_indices); i++)
1747 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1748 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1750 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1752 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1753 if (ls_indexp[0] == lsi)
1757 /* delete index for removed locator-set */
1758 vec_del1 (ls_indexes[0], j);
1760 /* delete locator if it's part of no locator-set */
1761 if (vec_len (ls_indexes[0]) == 0)
1763 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1764 vec_add1 (to_be_deleted, i);
1770 for (i = 0; i < vec_len (to_be_deleted); i++)
1772 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1773 vec_del1 (ls->locator_indices, loc_indexp[0]);
1775 vec_free (to_be_deleted);
1779 static inline uword *
1780 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1782 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1787 /* find locator-set */
1791 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1802 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1808 ASSERT (ls != NULL);
1809 ASSERT (loc != NULL);
1811 vec_foreach (locit, ls->locator_indices)
1813 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1814 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1815 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1817 clib_warning ("Duplicate locator");
1818 return VNET_API_ERROR_VALUE_EXIST;
1826 update_adjacencies_by_map_index (lisp_cp_main_t * lcm, u8 is_local,
1827 u32 mapping_index, u8 remove_only)
1831 vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
1833 map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
1836 pool_foreach(fwd, lcm->fwd_entry_pool,
1838 if ((is_local && 0 == gid_address_cmp (&map->eid, &fwd->leid)) ||
1839 (!is_local && 0 == gid_address_cmp (&map->eid, &fwd->reid)))
1842 gid_address_copy (&a->leid, &fwd->leid);
1843 gid_address_copy (&a->reid, &fwd->reid);
1845 vnet_lisp_add_del_adjacency (a);
1850 vnet_lisp_add_del_adjacency (a);
1858 update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm, u8 is_local,
1859 u32 ls_index, u8 remove_only)
1864 if (vec_len (lcm->locator_set_to_eids) <= ls_index)
1867 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
1869 for (i = 0; i < vec_len (eid_indexes[0]); i++)
1871 map_indexp = vec_elt_at_index (eid_indexes[0], i);
1872 update_adjacencies_by_map_index (lcm, is_local, map_indexp[0],
1878 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1879 u32 ls_index, u32 loc_id)
1881 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1882 u32 **ls_indexes = NULL;
1884 ASSERT (ls != NULL);
1885 ASSERT (locit != NULL);
1887 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1888 pool_put_index (lcm->locator_pool, locit[0]);
1889 vec_del1 (ls->locator_indices, loc_id);
1890 vec_del1 (ls_indexes[0], ls_index);
1894 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1895 locator_set_t * ls, u32 * ls_result)
1897 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1898 locator_t *loc = NULL, *itloc = NULL;
1899 uword _p = (u32) ~ 0, *p = &_p;
1900 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1906 if (vnet_lisp_enable_disable_status () == 0)
1908 clib_warning ("LISP is disabled!");
1909 return VNET_API_ERROR_LISP_DISABLED;
1912 p = get_locator_set_index (a, p);
1915 clib_warning ("locator-set %v doesn't exist", a->name);
1916 return VNET_API_ERROR_INVALID_ARGUMENT;
1921 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1924 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1926 return VNET_API_ERROR_INVALID_ARGUMENT;
1933 ls_result[0] = p[0];
1935 /* allocate locators */
1936 vec_foreach (itloc, a->locators)
1938 ret = is_locator_in_locator_set (lcm, ls, itloc);
1944 pool_get (lcm->locator_pool, loc);
1946 loc_index = loc - lcm->locator_pool;
1948 vec_add1 (ls->locator_indices, loc_index);
1950 vec_validate (lcm->locator_to_locator_sets, loc_index);
1951 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1953 vec_add1 (ls_indexes[0], p[0]);
1961 vec_foreach (itloc, a->locators)
1965 vec_foreach (locit, ls->locator_indices)
1967 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1969 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1972 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1974 if (0 == loc->local &&
1975 !gid_address_cmp (&loc->address, &itloc->address))
1978 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1983 /* update fwd entries using this locator in DP */
1984 update_fwd_entries_by_locator_set (lcm, loc->local, ls_index,
1985 vec_len (ls->locator_indices)
1998 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
2001 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2003 uword _p = (u32) ~ 0, *p = &_p;
2008 if (vnet_lisp_enable_disable_status () == 0)
2010 clib_warning ("LISP is disabled!");
2011 return VNET_API_ERROR_LISP_DISABLED;
2016 p = get_locator_set_index (a, p);
2019 if (p && p[0] != (u32) ~ 0)
2021 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2024 clib_warning ("locator-set %d to be overwritten doesn't exist!",
2029 /* clean locator to locator-set vectors and remove locators if
2030 * they're not part of another locator-set */
2031 clean_locator_to_locator_set (lcm, p[0]);
2033 /* remove locator indices from locator set */
2034 vec_free (ls->locator_indices);
2039 ls_result[0] = p[0];
2041 /* new locator-set */
2044 pool_get (lcm->locator_set_pool, ls);
2045 memset (ls, 0, sizeof (*ls));
2046 ls_index = ls - lcm->locator_set_pool;
2050 ls->name = vec_dup (a->name);
2052 if (!lcm->locator_set_index_by_name)
2053 lcm->locator_set_index_by_name = hash_create_vec (
2061 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
2064 /* mark as local locator-set */
2065 vec_add1 (lcm->local_locator_set_indexes, ls_index);
2067 ls->local = a->local;
2069 ls_result[0] = ls_index;
2072 ret = vnet_lisp_add_del_locator (a, ls, NULL);
2080 p = get_locator_set_index (a, p);
2083 clib_warning ("locator-set %v doesn't exists", a->name);
2087 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2090 clib_warning ("locator-set with index %d doesn't exists", p[0]);
2094 if (lcm->mreq_itr_rlocs == p[0])
2096 clib_warning ("Can't delete the locator-set used to constrain "
2097 "the itr-rlocs in map-requests!");
2101 if (vec_len (lcm->locator_set_to_eids) != 0)
2103 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
2104 if (vec_len (eid_indexes[0]) != 0)
2107 ("Can't delete a locator that supports a mapping!");
2112 /* clean locator to locator-sets data */
2113 clean_locator_to_locator_set (lcm, p[0]);
2119 vec_foreach_index (it, lcm->local_locator_set_indexes)
2121 lsi = vec_elt (lcm->local_locator_set_indexes, it);
2124 vec_del1 (lcm->local_locator_set_indexes, it);
2128 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
2130 vec_free (ls->name);
2131 vec_free (ls->locator_indices);
2132 pool_put (lcm->locator_set_pool, ls);
2138 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
2140 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2142 lcm->rloc_probing = is_enable;
2147 vnet_lisp_map_register_enable_disable (u8 is_enable)
2149 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2151 lcm->map_registering = is_enable;
2156 vnet_lisp_enable_disable (u8 is_enable)
2158 u32 vni, dp_table, **rmts;
2159 clib_error_t *error = 0;
2160 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2161 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
2163 a->is_en = is_enable;
2164 error = vnet_lisp_gpe_enable_disable (a);
2167 return clib_error_return (0, "failed to %s data-plane!",
2168 a->is_en ? "enable" : "disable");
2173 /* enable all l2 and l3 ifaces */
2176 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
2177 dp_add_del_iface(lcm, vni, 0, 1);
2179 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
2180 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
2186 /* clear interface table */
2187 hash_free (lcm->fwd_entry_by_mapping_index);
2188 pool_free (lcm->fwd_entry_pool);
2189 /* Clear state tracking rmt-lcl fwd entries */
2191 pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
2196 hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
2197 pool_free (lcm->lcl_to_rmt_adjacencies);
2200 /* update global flag */
2201 lcm->is_enabled = is_enable;
2207 vnet_lisp_enable_disable_status (void)
2209 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2210 return lcm->is_enabled;
2214 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
2216 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2218 lisp_msmr_t _mr, *mr = &_mr;
2220 if (vnet_lisp_enable_disable_status () == 0)
2222 clib_warning ("LISP is disabled!");
2223 return VNET_API_ERROR_LISP_DISABLED;
2229 if (get_map_resolver (&a->address))
2231 clib_warning ("map-resolver %U already exists!", format_ip_address,
2236 memset (mr, 0, sizeof (*mr));
2237 ip_address_copy (&mr->address, &a->address);
2238 vec_add1 (lcm->map_resolvers, *mr);
2240 if (vec_len (lcm->map_resolvers) == 1)
2241 lcm->do_map_resolver_election = 1;
2245 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
2247 mr = vec_elt_at_index (lcm->map_resolvers, i);
2248 if (!ip_address_cmp (&mr->address, &a->address))
2250 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
2251 lcm->do_map_resolver_election = 1;
2253 vec_del1 (lcm->map_resolvers, i);
2262 vnet_lisp_map_register_set_ttl (u32 ttl)
2264 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2265 lcm->map_register_ttl = ttl;
2270 vnet_lisp_map_register_get_ttl (void)
2272 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2273 return lcm->map_register_ttl;
2277 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
2279 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2282 if (vnet_lisp_enable_disable_status () == 0)
2284 clib_warning ("LISP is disabled!");
2285 return VNET_API_ERROR_LISP_DISABLED;
2290 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
2293 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
2294 return VNET_API_ERROR_INVALID_ARGUMENT;
2297 lcm->mreq_itr_rlocs = p[0];
2301 lcm->mreq_itr_rlocs = ~0;
2307 /* Statistics (not really errors) */
2308 #define foreach_lisp_cp_lookup_error \
2310 _(MAP_REQUESTS_SENT, "map-request sent") \
2311 _(ARP_REPLY_TX, "ARP replies sent") \
2312 _(NDP_NEIGHBOR_ADVERTISEMENT_TX, \
2313 "neighbor advertisement sent")
2315 static char *lisp_cp_lookup_error_strings[] = {
2316 #define _(sym,string) string,
2317 foreach_lisp_cp_lookup_error
2323 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
2324 foreach_lisp_cp_lookup_error
2326 LISP_CP_LOOKUP_N_ERROR,
2327 } lisp_cp_lookup_error_t;
2331 LISP_CP_LOOKUP_NEXT_DROP,
2332 LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
2333 LISP_CP_LOOKUP_N_NEXT,
2334 } lisp_cp_lookup_next_t;
2338 gid_address_t dst_eid;
2339 ip_address_t map_resolver_ip;
2340 } lisp_cp_lookup_trace_t;
2343 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
2345 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2346 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2347 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
2349 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
2350 format_ip_address, &t->map_resolver_ip, format_gid_address,
2356 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
2357 ip_address_t * sloc)
2362 if (vec_len (lcm->map_resolvers) == 0)
2364 clib_warning ("No map-resolver configured");
2368 /* find the first mr ip we have a route to and the ip of the
2369 * iface that has a route to it */
2370 vec_foreach (mrit, lcm->map_resolvers)
2373 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
2375 ip_address_copy (mr_ip, a);
2377 /* also update globals */
2382 clib_warning ("Can't find map-resolver and local interface ip!");
2386 static gid_address_t *
2387 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
2393 ip_interface_address_t *ia = 0;
2394 gid_address_t gid_data, *gid = &gid_data;
2395 gid_address_t *rlocs = 0;
2396 ip_prefix_t *ippref = &gid_address_ippref (gid);
2397 ip_address_t *rloc = &ip_prefix_addr (ippref);
2399 memset (gid, 0, sizeof (gid[0]));
2400 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
2401 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
2403 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
2404 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
2406 /* Add ipv4 locators first TODO sort them */
2409 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2410 loc->sw_if_index, 1 /* unnumbered */,
2412 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
2413 ip_address_set (rloc, addr, IP4);
2414 ip_prefix_len (ippref) = 32;
2415 ip_prefix_normalize (ippref);
2416 vec_add1 (rlocs, gid[0]);
2419 /* Add ipv6 locators */
2420 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2421 loc->sw_if_index, 1 /* unnumbered */,
2423 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
2424 ip_address_set (rloc, addr, IP6);
2425 ip_prefix_len (ippref) = 128;
2426 ip_prefix_normalize (ippref);
2427 vec_add1 (rlocs, gid[0]);
2435 static vlib_buffer_t *
2436 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
2437 ip_address_t * sloc, ip_address_t * rloc,
2438 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
2442 vlib_main_t *vm = lcm->vlib_main;
2444 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2446 clib_warning ("Can't allocate buffer for Map-Request!");
2450 b = vlib_get_buffer (vm, bi);
2452 /* leave some space for the encap headers */
2453 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2456 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2457 1 /* rloc probe */ , nonce_res);
2459 /* push outer ip header */
2460 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2468 static vlib_buffer_t *
2469 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2470 gid_address_t * seid, gid_address_t * deid,
2471 locator_set_t * loc_set, ip_address_t * mr_ip,
2472 ip_address_t * sloc, u8 is_smr_invoked,
2473 u64 * nonce_res, u32 * bi_res)
2477 gid_address_t *rlocs = 0;
2478 vlib_main_t *vm = lcm->vlib_main;
2480 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2482 clib_warning ("Can't allocate buffer for Map-Request!");
2486 b = vlib_get_buffer (vm, bi);
2489 /* leave some space for the encap headers */
2490 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2493 rlocs = build_itr_rloc_list (lcm, loc_set);
2495 if (MR_MODE_SRC_DST == lcm->map_request_mode
2496 && GID_ADDR_SRC_DST != gid_address_type (deid))
2499 memset (&sd, 0, sizeof (sd));
2500 build_src_dst (&sd, seid, deid);
2501 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2502 0 /* rloc probe */ , nonce_res);
2507 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2508 0 /* rloc probe */ , nonce_res);
2511 /* push ecm: udp-ip-lisp */
2512 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2514 /* push outer ip header */
2515 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2525 reset_pending_mr_counters (pending_map_request_t * r)
2527 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2531 #define foreach_msmr \
2537 elect_map_ ## name (lisp_cp_main_t * lcm) \
2540 vec_foreach (mr, lcm->map_ ## name ## s) \
2544 ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
2545 lcm->do_map_ ## name ## _election = 0; \
2554 free_map_register_records (mapping_t * maps)
2557 vec_foreach (map, maps) vec_free (map->locators);
2563 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2564 ip_address_t * probed_loc)
2567 locator_t *loc, new;
2568 ip_interface_address_t *ia = 0;
2570 ip_address_t *new_ip = &gid_address_ip (&new.address);
2573 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2575 vec_foreach (li, ls->locator_indices)
2577 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2582 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2583 loc->sw_if_index, 1 /* unnumbered */,
2585 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2587 ip_address_set (new_ip, addr, IP4);
2590 /* Add ipv6 locators */
2591 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2592 loc->sw_if_index, 1 /* unnumbered */,
2594 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2596 ip_address_set (new_ip, addr, IP6);
2600 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2603 vec_add1 (m->locators, new);
2608 build_map_register_record_list (lisp_cp_main_t * lcm)
2610 mapping_t *recs = 0, rec, *m;
2613 pool_foreach(m, lcm->mapping_pool,
2615 /* for now build only local mappings */
2620 add_locators (lcm, &rec, m->locator_set_index, NULL);
2621 vec_add1 (recs, rec);
2629 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2630 lisp_key_type_t key_id, u8 * key,
2631 u16 auth_data_len, u32 msg_len)
2633 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2634 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2636 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2637 (unsigned char *) map_reg_hdr, msg_len, NULL,
2639 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2644 static vlib_buffer_t *
2645 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2646 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2647 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2652 u32 bi, auth_data_len = 0, msg_len = 0;
2653 vlib_main_t *vm = lcm->vlib_main;
2655 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2657 clib_warning ("Can't allocate buffer for Map-Register!");
2661 b = vlib_get_buffer (vm, bi);
2663 /* leave some space for the encap headers */
2664 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2666 auth_data_len = auth_data_len_by_key_id (key_id);
2667 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2668 auth_data_len, nonce_res,
2671 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2674 /* push outer ip header */
2675 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2684 get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
2687 while (lcm->do_map_ ## name ## _election \
2688 | (0 == ip_fib_get_first_egress_ip_for_dst \
2689 (lcm, &lcm->active_map_ ##name, ip))) \
2691 if (0 == elect_map_ ## name (lcm)) \
2692 /* all map resolvers/servers are down */ \
2694 /* restart MR/MS checking by marking all of them up */ \
2695 vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
2704 /* CP output statistics */
2705 #define foreach_lisp_cp_output_error \
2706 _(MAP_REGISTERS_SENT, "map-registers sent") \
2707 _(MAP_REQUESTS_SENT, "map-requests sent") \
2708 _(RLOC_PROBES_SENT, "rloc-probes sent")
2709 static char *lisp_cp_output_error_strings[] = {
2710 #define _(sym,string) string,
2711 foreach_lisp_cp_output_error
2717 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2718 foreach_lisp_cp_output_error
2720 LISP_CP_OUTPUT_N_ERROR,
2721 } lisp_cp_output_error_t;
2724 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2725 vlib_frame_t * from_frame)
2730 /* dummy node used only for statistics */
2732 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2733 .function = lisp_cp_output,
2734 .name = "lisp-cp-output",
2735 .vector_size = sizeof (u32),
2736 .format_trace = format_lisp_cp_input_trace,
2737 .type = VLIB_NODE_TYPE_INTERNAL,
2739 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2740 .error_strings = lisp_cp_output_error_strings,
2742 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2745 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2751 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2752 u32 local_locator_set_index, ip_address_t * sloc,
2753 ip_address_t * rloc)
2760 u32 next_index, *to_next;
2761 gid_address_t *itr_rlocs;
2763 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2764 itr_rlocs = build_itr_rloc_list (lcm, ls);
2766 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2767 vec_free (itr_rlocs);
2771 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2773 next_index = (ip_addr_version (rloc) == IP4) ?
2774 ip4_lookup_node.index : ip6_lookup_node.index;
2776 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2778 /* Enqueue the packet */
2779 to_next = vlib_frame_vector_args (f);
2782 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2788 send_rloc_probes (lisp_cp_main_t * lcm)
2794 u32 si, rloc_probes_sent = 0;
2797 pool_foreach (e, lcm->fwd_entry_pool,
2799 if (vec_len (e->locator_pairs) == 0)
2802 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2805 clib_warning ("internal error: cannot find local eid %U in "
2806 "map-cache!", format_gid_address, &e->leid);
2809 lm = pool_elt_at_index (lcm->mapping_pool, si);
2811 /* get the best (lowest) priority */
2812 lprio = e->locator_pairs[0].priority;
2814 /* send rloc-probe for pair(s) with the best remote locator priority */
2815 vec_foreach (lp, e->locator_pairs)
2817 if (lp->priority != lprio)
2820 /* get first remote locator */
2821 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2828 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2829 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2835 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2837 pending_map_register_t *pmr;
2838 u32 bi, map_registers_sent = 0;
2843 u32 next_index, *to_next;
2844 mapping_t *records, *r, *group, *k;
2846 if (get_egress_map_server_ip (lcm, &sloc) < 0)
2849 records = build_map_register_record_list (lcm);
2853 vec_foreach (r, records)
2856 u8 key_id = r->key_id;
2859 continue; /* no secret key -> map-register cannot be sent */
2862 vec_add1 (group, r[0]);
2864 /* group mappings that share common key */
2865 for (k = r + 1; k < vec_end (records); k++)
2867 if (k->key_id != r->key_id)
2870 if (vec_is_equal (k->key, r->key))
2872 vec_add1 (group, k[0]);
2873 k->key = 0; /* don't process this mapping again */
2877 b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
2878 want_map_notif, group, key_id, key, &bi);
2883 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2885 next_index = (ip_addr_version (&lcm->active_map_server) == IP4) ?
2886 ip4_lookup_node.index : ip6_lookup_node.index;
2888 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2890 /* Enqueue the packet */
2891 to_next = vlib_frame_vector_args (f);
2894 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2895 map_registers_sent++;
2897 pool_get (lcm->pending_map_registers_pool, pmr);
2898 memset (pmr, 0, sizeof (*pmr));
2899 pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
2900 hash_set (lcm->map_register_messages_by_nonce, nonce,
2901 pmr - lcm->pending_map_registers_pool);
2903 free_map_register_records (records);
2905 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2906 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
2907 map_registers_sent);
2912 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
2913 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
2915 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
2916 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
2919 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
2920 gid_address_t * seid, gid_address_t * deid,
2921 u8 is_smr_invoked, u8 is_resend)
2923 u32 next_index, bi = 0, *to_next, map_index;
2927 locator_set_t *loc_set;
2929 pending_map_request_t *pmr, *duplicate_pmr = 0;
2933 /* if there is already a pending request remember it */
2936 pool_foreach(pmr, lcm->pending_map_requests_pool,
2938 if (!gid_address_cmp (&pmr->src, seid)
2939 && !gid_address_cmp (&pmr->dst, deid))
2941 duplicate_pmr = pmr;
2947 if (!is_resend && duplicate_pmr)
2949 /* don't send the request if there is a pending map request already */
2953 /* get locator-set for seid */
2954 if (!lcm->lisp_pitr && gid_address_type (deid) != GID_ADDR_NSH)
2956 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
2957 if (map_index == ~0)
2959 clib_warning ("No local mapping found in eid-table for %U!",
2960 format_gid_address, seid);
2964 map = pool_elt_at_index (lcm->mapping_pool, map_index);
2969 ("Mapping found for src eid %U is not marked as local!",
2970 format_gid_address, seid);
2973 ls_index = map->locator_set_index;
2979 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
2980 ls_index = map->locator_set_index;
2984 if (lcm->nsh_map_index == (u32) ~ 0)
2986 clib_warning ("No locator-set defined for NSH!");
2991 map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
2992 ls_index = map->locator_set_index;
2997 /* overwrite locator set if map-request itr-rlocs configured */
2998 if (~0 != lcm->mreq_itr_rlocs)
3000 ls_index = lcm->mreq_itr_rlocs;
3003 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
3005 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
3008 duplicate_pmr->to_be_removed = 1;
3012 /* build the encapsulated map request */
3013 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
3014 &lcm->active_map_resolver,
3015 &sloc, is_smr_invoked, &nonce, &bi);
3020 /* set fib index to default and lookup node */
3021 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3022 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3023 ip4_lookup_node.index : ip6_lookup_node.index;
3025 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3027 /* Enqueue the packet */
3028 to_next = vlib_frame_vector_args (f);
3031 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3033 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3034 LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1);
3037 /* if there is a pending request already update it */
3039 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
3041 /* remove the oldest nonce */
3042 u64 CLIB_UNUSED (tmp), *nonce_del;
3043 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
3044 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
3045 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
3048 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
3049 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3050 duplicate_pmr - lcm->pending_map_requests_pool);
3054 /* add map-request to pending requests table */
3055 pool_get (lcm->pending_map_requests_pool, pmr);
3056 memset (pmr, 0, sizeof (*pmr));
3057 gid_address_copy (&pmr->src, seid);
3058 gid_address_copy (&pmr->dst, deid);
3059 clib_fifo_add1 (pmr->nonces, nonce);
3060 pmr->is_smr_invoked = is_smr_invoked;
3061 reset_pending_mr_counters (pmr);
3062 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3063 pmr - lcm->pending_map_requests_pool);
3070 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
3072 ip4_header_t *ip4 = hdr;
3075 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
3077 ip_address_set (src, &ip4->src_address, IP4);
3078 ip_address_set (dst, &ip4->dst_address, IP4);
3083 ip_address_set (src, &ip6->src_address, IP6);
3084 ip_address_set (dst, &ip6->dst_address, IP6);
3089 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3093 u32 vni = ~0, table_id = ~0;
3095 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
3096 IP4 ? FIB_PROTOCOL_IP4 :
3102 vnip = hash_get (lcm->vni_by_table_id, table_id);
3106 clib_warning ("vrf %d is not mapped to any vni!", table_id);
3112 lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
3116 l2input_main_t *l2im = &l2input_main;
3117 l2_input_config_t *config;
3118 l2_bridge_domain_t *bd_config;
3120 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
3121 config = vec_elt_at_index (l2im->configs, sw_if_index0);
3122 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
3124 return bd_config->bd_id;
3128 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
3132 u32 bd = lisp_get_bd_from_buffer_eth (b);
3134 vnip = hash_get (lcm->vni_by_bd_id, bd);
3138 clib_warning ("bridge domain %d is not mapped to any vni!", bd);
3144 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3145 gid_address_t * src, gid_address_t * dst,
3148 ethernet_header_t *eh;
3150 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3152 memset (src, 0, sizeof (*src));
3153 memset (dst, 0, sizeof (*dst));
3155 gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
3156 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3158 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
3161 u8 version, preflen;
3163 gid_address_type (src) = GID_ADDR_IP_PREFIX;
3164 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
3166 ip = vlib_buffer_get_current (b);
3167 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
3169 version = gid_address_ip_version (src);
3170 preflen = ip_address_max_len (version);
3171 gid_address_ippref_len (src) = preflen;
3172 gid_address_ippref_len (dst) = preflen;
3174 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
3175 gid_address_vni (dst) = vni;
3176 gid_address_vni (src) = vni;
3178 else if (LISP_AFI_MAC == type)
3180 ethernet_arp_header_t *ah;
3182 eh = vlib_buffer_get_current (b);
3184 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
3186 ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
3187 if (clib_net_to_host_u16 (ah->opcode)
3188 != ETHERNET_ARP_OPCODE_request)
3191 gid_address_type (dst) = GID_ADDR_ARP;
3192 gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
3193 clib_memcpy (&gid_address_arp_ip4 (dst),
3194 &ah->ip4_over_ethernet[1].ip4, 4);
3198 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
3201 ip = (ip6_header_t *) (eh + 1);
3203 if (IP_PROTOCOL_ICMP6 == ip->protocol)
3205 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3206 ndh = ip6_next_header (ip);
3207 if (ndh->icmp.type == ICMP6_neighbor_solicitation)
3209 opt = (void *) (ndh + 1);
3210 if ((opt->header.type !=
3211 ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
3212 || (opt->header.n_data_u64s != 1))
3213 return; /* source link layer address option not present */
3215 gid_address_type (dst) = GID_ADDR_NDP;
3216 gid_address_ndp_bd (dst) =
3217 lisp_get_bd_from_buffer_eth (b);
3218 ip_address_set (&gid_address_arp_ndp_ip (dst),
3219 &ndh->target_address, IP6);
3225 gid_address_type (src) = GID_ADDR_MAC;
3226 gid_address_type (dst) = GID_ADDR_MAC;
3227 mac_copy (&gid_address_mac (src), eh->src_address);
3228 mac_copy (&gid_address_mac (dst), eh->dst_address);
3231 vni = lisp_get_vni_from_buffer_eth (lcm, b);
3233 gid_address_vni (dst) = vni;
3234 gid_address_vni (src) = vni;
3237 else if (LISP_AFI_LCAF == type)
3240 eh = vlib_buffer_get_current (b);
3242 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
3244 nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
3245 u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
3246 u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
3247 gid_address_nsh_spi (dst) = spi;
3248 gid_address_nsh_si (dst) = si;
3250 gid_address_type (dst) = GID_ADDR_NSH;
3251 gid_address_type (src) = GID_ADDR_NSH;
3257 lisp_cp_lookup_inline (vlib_main_t * vm,
3258 vlib_node_runtime_t * node,
3259 vlib_frame_t * from_frame, int overlay)
3261 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3262 u32 *from, *to_next, di, si;
3263 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3265 uword n_left_from, n_left_to_next;
3266 vnet_main_t *vnm = vnet_get_main ();
3268 from = vlib_frame_vector_args (from_frame);
3269 n_left_from = from_frame->n_vectors;
3270 next_index = node->cached_next_index;
3272 while (n_left_from > 0)
3274 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
3276 while (n_left_from > 0 && n_left_to_next > 0)
3278 u32 pi0, sw_if_index0, next0;
3281 gid_address_t src, dst;
3282 ethernet_arp_header_t *arp0;
3283 ethernet_header_t *eth0;
3284 vnet_hw_interface_t *hw_if0;
3285 ethernet_header_t *eh0;
3286 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3294 n_left_to_next -= 1;
3296 b0 = vlib_get_buffer (vm, pi0);
3298 /* src/dst eid pair */
3299 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
3301 if (gid_address_type (&dst) == GID_ADDR_ARP)
3303 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3304 if (GID_LOOKUP_MISS_L2 == mac0)
3307 /* send ARP reply */
3308 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3309 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3311 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3313 eth0 = vlib_buffer_get_current (b0);
3314 arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
3316 arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
3317 arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
3318 clib_memcpy (arp0->ip4_over_ethernet[0].ethernet,
3320 clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
3321 &gid_address_arp_ip4 (&dst), 4);
3323 /* Hardware must be ethernet-like. */
3324 ASSERT (vec_len (hw_if0->hw_address) == 6);
3326 clib_memcpy (eth0->dst_address, eth0->src_address, 6);
3327 clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
3329 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
3330 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3333 else if (gid_address_type (&dst) == GID_ADDR_NDP)
3335 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3336 if (GID_LOOKUP_MISS_L2 == mac0)
3339 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3340 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3342 eh0 = vlib_buffer_get_current (b0);
3343 ip0 = (ip6_header_t *) (eh0 + 1);
3344 ndh = ip6_next_header (ip0);
3346 ip0->dst_address = ip0->src_address;
3347 ip0->src_address = ndh->target_address;
3348 ip0->hop_limit = 255;
3349 opt = (void *) (ndh + 1);
3351 ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
3352 clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
3353 ndh->icmp.type = ICMP6_neighbor_advertisement;
3354 ndh->advertisement_flags = clib_host_to_net_u32
3355 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
3356 ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
3357 ndh->icmp.checksum = 0;
3358 ndh->icmp.checksum =
3359 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
3361 clib_memcpy (eh0->dst_address, eh0->src_address, 6);
3362 clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
3365 [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
3366 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3370 /* if we have remote mapping for destination already in map-chache
3371 add forwarding tunnel directly. If not send a map-request */
3372 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
3376 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
3377 /* send a map-request also in case of negative mapping entry
3378 with corresponding action */
3379 if (m->action == LISP_SEND_MAP_REQUEST)
3381 /* send map-request */
3382 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3383 0 /* is_resend */ );
3387 if (GID_ADDR_NSH != gid_address_type (&dst))
3389 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
3393 si = lcm->nsh_map_index;
3397 dp_add_fwd_entry_from_mt (si, di);
3403 /* send map-request */
3404 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3405 0 /* is_resend */ );
3409 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
3410 next0 = LISP_CP_LOOKUP_NEXT_DROP;
3412 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3414 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
3417 memset (tr, 0, sizeof (*tr));
3418 gid_address_copy (&tr->dst_eid, &dst);
3419 ip_address_copy (&tr->map_resolver_ip,
3420 &lcm->active_map_resolver);
3422 gid_address_free (&dst);
3423 gid_address_free (&src);
3424 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3426 n_left_to_next, pi0, next0);
3429 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
3431 return from_frame->n_vectors;
3435 lisp_cp_lookup_ip4 (vlib_main_t * vm,
3436 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3438 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
3442 lisp_cp_lookup_ip6 (vlib_main_t * vm,
3443 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3445 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
3449 lisp_cp_lookup_l2 (vlib_main_t * vm,
3450 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3452 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
3456 lisp_cp_lookup_nsh (vlib_main_t * vm,
3457 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3459 /* TODO decide if NSH should be propagated as LCAF or not */
3460 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
3464 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
3465 .function = lisp_cp_lookup_ip4,
3466 .name = "lisp-cp-lookup-ip4",
3467 .vector_size = sizeof (u32),
3468 .format_trace = format_lisp_cp_lookup_trace,
3469 .type = VLIB_NODE_TYPE_INTERNAL,
3471 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3472 .error_strings = lisp_cp_lookup_error_strings,
3474 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3477 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3478 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3484 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
3485 .function = lisp_cp_lookup_ip6,
3486 .name = "lisp-cp-lookup-ip6",
3487 .vector_size = sizeof (u32),
3488 .format_trace = format_lisp_cp_lookup_trace,
3489 .type = VLIB_NODE_TYPE_INTERNAL,
3491 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3492 .error_strings = lisp_cp_lookup_error_strings,
3494 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3497 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3498 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3504 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
3505 .function = lisp_cp_lookup_l2,
3506 .name = "lisp-cp-lookup-l2",
3507 .vector_size = sizeof (u32),
3508 .format_trace = format_lisp_cp_lookup_trace,
3509 .type = VLIB_NODE_TYPE_INTERNAL,
3511 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3512 .error_strings = lisp_cp_lookup_error_strings,
3514 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3517 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3518 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3524 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
3525 .function = lisp_cp_lookup_nsh,
3526 .name = "lisp-cp-lookup-nsh",
3527 .vector_size = sizeof (u32),
3528 .format_trace = format_lisp_cp_lookup_trace,
3529 .type = VLIB_NODE_TYPE_INTERNAL,
3531 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3532 .error_strings = lisp_cp_lookup_error_strings,
3534 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3537 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3538 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3543 /* lisp_cp_input statistics */
3544 #define foreach_lisp_cp_input_error \
3546 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
3547 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
3548 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
3549 _(MAP_REPLIES_RECEIVED, "map-replies received")
3551 static char *lisp_cp_input_error_strings[] = {
3552 #define _(sym,string) string,
3553 foreach_lisp_cp_input_error
3559 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
3560 foreach_lisp_cp_input_error
3562 LISP_CP_INPUT_N_ERROR,
3563 } lisp_cp_input_error_t;
3567 gid_address_t dst_eid;
3568 ip4_address_t map_resolver_ip;
3569 } lisp_cp_input_trace_t;
3572 format_lisp_cp_input_trace (u8 * s, va_list * args)
3574 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
3575 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
3576 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
3577 va_arg (*args, lisp_cp_input_trace_t *);
3579 s = format (s, "LISP-CP-INPUT: TODO");
3584 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3587 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3588 memset (adj_args, 0, sizeof (adj_args[0]));
3590 m = pool_elt_at_index (lcm->mapping_pool, mi);
3592 gid_address_copy (&adj_args->reid, &m->eid);
3593 adj_args->is_add = 0;
3594 if (vnet_lisp_add_del_adjacency (adj_args))
3595 clib_warning ("failed to del adjacency!");
3597 vnet_lisp_del_mapping (&m->eid, NULL);
3598 mapping_delete_timer (lcm, mi);
3602 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
3603 f64 expiration_time)
3606 u64 now = clib_cpu_time_now ();
3607 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
3608 u64 exp_clock_time = now + expiration_time * cpu_cps;
3610 m = pool_elt_at_index (lcm->mapping_pool, mi);
3613 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
3617 process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3620 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
3621 mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
3627 if (m->delete_after_expiration)
3629 remove_expired_mapping (lcm, mi);
3633 fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
3637 fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
3639 memset (a, 0, sizeof (*a));
3640 a->rmt_eid = fe->reid;
3642 a->lcl_eid = fe->leid;
3643 a->vni = gid_address_vni (&fe->reid);
3645 rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
3649 if (m->almost_expired)
3651 m->almost_expired = 0; /* reset flag */
3654 if (m->packets != c.packets)
3656 /* mapping is in use, re-fetch */
3657 map_request_args_t mr_args;
3658 memset (&mr_args, 0, sizeof (mr_args));
3659 mr_args.seid = fe->leid;
3660 mr_args.deid = fe->reid;
3662 send_map_request_thread_fn (&mr_args);
3665 remove_expired_mapping (lcm, mi);
3668 remove_expired_mapping (lcm, mi);
3672 m->almost_expired = 1;
3673 mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
3677 m->packets = c.packets;
3679 m->delete_after_expiration = 1;
3684 map_records_arg_free (map_records_arg_t * a)
3686 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3688 vec_foreach (m, a->mappings)
3690 vec_free (m->locators);
3691 gid_address_free (&m->eid);
3693 pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
3697 process_map_reply (map_records_arg_t * a)
3700 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3701 u32 dst_map_index = 0;
3702 pending_map_request_t *pmr;
3707 if (a->is_rloc_probe)
3710 /* Check pending requests table and nonce */
3711 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3714 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3717 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3719 vec_foreach (m, a->mappings)
3721 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
3722 memset (m_args, 0, sizeof (m_args[0]));
3723 gid_address_copy (&m_args->eid, &m->eid);
3724 m_args->action = m->action;
3725 m_args->authoritative = m->authoritative;
3726 m_args->ttl = m->ttl;
3727 m_args->is_static = 0;
3729 /* insert/update mappings cache */
3730 vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
3732 if (dst_map_index == (u32) ~ 0)
3737 /* try to program forwarding only if mapping saved or updated */
3738 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3739 memset (adj_args, 0, sizeof (adj_args[0]));
3741 gid_address_copy (&adj_args->leid, &pmr->src);
3742 gid_address_copy (&adj_args->reid, &m->eid);
3743 adj_args->is_add = 1;
3745 if (vnet_lisp_add_del_adjacency (adj_args))
3746 clib_warning ("failed to add adjacency!");
3749 if ((u32) ~ 0 != m->ttl)
3750 mapping_start_expiration_timer (lcm, dst_map_index, MAPPING_TIMEOUT);
3753 /* remove pending map request entry */
3756 clib_fifo_foreach (noncep, pmr->nonces, ({
3757 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3761 clib_fifo_free (pmr->nonces);
3762 pool_put (lcm->pending_map_requests_pool, pmr);
3770 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3771 lisp_key_type_t key_id, u8 * key)
3777 auth_data_len = auth_data_len_by_key_id (key_id);
3778 if ((u16) ~ 0 == auth_data_len)
3780 clib_warning ("invalid length for key_id %d!", key_id);
3784 /* save auth data */
3785 vec_validate (auth_data, auth_data_len - 1);
3786 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3788 /* clear auth data */
3789 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3791 /* get hash of the message */
3792 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3793 (unsigned char *) h, msg_len, NULL, NULL);
3795 result = memcmp (code, auth_data, auth_data_len);
3797 vec_free (auth_data);
3803 process_map_notify (map_records_arg_t * a)
3805 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3808 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3811 clib_warning ("No pending map-register entry with nonce %lu!",
3817 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
3818 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3820 /* reset map-notify counter */
3821 lcm->expired_map_registers = 0;
3825 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3829 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3832 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3836 return pool_elt_at_index (lcm->mapping_pool, mi);
3840 * When map-notify is received it is necessary that all EIDs in the record
3841 * list share common key. The key is then used to verify authentication
3842 * data in map-notify message.
3845 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3846 u32 key_id, u8 ** key_out)
3848 u32 i, len = vec_len (maps);
3851 /* get key of the first mapping */
3852 m = get_mapping (lcm, &maps[0].eid);
3856 key_out[0] = m->key;
3858 for (i = 1; i < len; i++)
3860 m = get_mapping (lcm, &maps[i].eid);
3864 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3866 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3874 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3876 locator_t *locators = 0;
3882 memset (&m, 0, sizeof (m));
3884 /* parse record eid */
3885 for (i = 0; i < count; i++)
3888 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3891 clib_warning ("Failed to parse mapping record!");
3892 vec_foreach (loc, locators) locator_free (loc);
3893 vec_free (locators);
3897 m.locators = locators;
3898 gid_address_copy (&m.eid, &deid);
3899 vec_add1 (a->mappings, m);
3905 static map_records_arg_t *
3906 map_record_args_get ()
3908 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3909 map_records_arg_t *rec;
3913 pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
3915 map_records_arg_free (rec);
3919 pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
3923 static map_records_arg_t *
3924 parse_map_notify (vlib_buffer_t * b)
3927 map_notify_hdr_t *mnotif_hdr;
3928 lisp_key_type_t key_id;
3929 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3932 u16 auth_data_len = 0;
3934 map_records_arg_t *a;
3936 a = map_record_args_get ();
3937 memset (a, 0, sizeof (*a));
3938 mnotif_hdr = vlib_buffer_get_current (b);
3939 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3940 memset (&deid, 0, sizeof (deid));
3942 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3943 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3944 auth_data_len = auth_data_len_by_key_id (key_id);
3946 /* advance buffer by authentication data */
3947 vlib_buffer_pull (b, auth_data_len);
3949 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3950 rc = parse_map_records (b, a, record_count);
3953 map_records_arg_free (a);
3957 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3960 map_records_arg_free (a);
3964 /* verify authentication data */
3965 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
3966 - (u8 *) mnotif_hdr, key_id, key))
3968 clib_warning ("Map-notify auth data verification failed for nonce "
3969 "0x%lx!", a->nonce);
3970 map_records_arg_free (a);
3976 static vlib_buffer_t *
3977 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
3978 ip_address_t * dst, u64 nonce, u8 probe_bit,
3979 mapping_t * records, u16 dst_port, u32 * bi_res)
3983 vlib_main_t *vm = lcm->vlib_main;
3985 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
3987 clib_warning ("Can't allocate buffer for Map-Register!");
3991 b = vlib_get_buffer (vm, bi);
3993 /* leave some space for the encap headers */
3994 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
3996 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
3998 /* push outer ip header */
3999 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
4006 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
4007 u8 probe_bit, u64 nonce, u16 dst_port,
4008 ip_address_t * probed_loc)
4014 u32 next_index, *to_next;
4015 mapping_t *records = 0, *m;
4017 m = pool_elt_at_index (lcm->mapping_pool, mi);
4021 vec_add1 (records, m[0]);
4022 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
4023 memset (&src, 0, sizeof (src));
4025 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
4027 clib_warning ("can't find inteface address for %U", format_ip_address,
4032 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
4036 free_map_register_records (records);
4038 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
4039 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
4040 ip4_lookup_node.index : ip6_lookup_node.index;
4042 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
4044 /* Enqueue the packet */
4045 to_next = vlib_frame_vector_args (f);
4048 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
4053 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
4055 const i32 start = vnet_buffer (b)->l3_hdr_offset;
4056 if (start < 0 && start < -sizeof (b->pre_data))
4062 *ip_hdr = b->data + start;
4063 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
4068 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
4069 lisp_cp_main_t * lcm, vlib_buffer_t * b)
4072 ip_address_t *dst_loc = 0, probed_loc, src_loc;
4074 map_request_hdr_t *mreq_hdr;
4075 gid_address_t src, dst;
4077 u32 i, len = 0, rloc_probe_recv = 0;
4078 gid_address_t *itr_rlocs = 0;
4080 mreq_hdr = vlib_buffer_get_current (b);
4081 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
4084 ("Only SMR Map-Requests and RLOC probe supported for now!");
4088 vlib_buffer_pull (b, sizeof (*mreq_hdr));
4089 nonce = MREQ_NONCE (mreq_hdr);
4092 len = lisp_msg_parse_addr (b, &src);
4096 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
4097 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
4101 /* parse eid records and send SMR-invoked map-requests */
4102 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
4104 memset (&dst, 0, sizeof (dst));
4105 len = lisp_msg_parse_eid_rec (b, &dst);
4108 clib_warning ("Can't parse map-request EID-record");
4112 if (MREQ_SMR (mreq_hdr))
4114 /* send SMR-invoked map-requests */
4115 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
4117 else if (MREQ_RLOC_PROBE (mreq_hdr))
4119 find_ip_header (b, &ip_hdr);
4122 clib_warning ("Cannot find the IP header!");
4126 memset (&m, 0, sizeof (m));
4127 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
4129 // TODO: select best locator; for now use the first one
4130 dst_loc = &gid_address_ip (&itr_rlocs[0]);
4132 /* get src/dst IP addresses */
4133 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
4135 // TODO get source port from buffer
4136 u16 src_port = LISP_CONTROL_PORT;
4138 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
4139 src_port, &probed_loc);
4144 vlib_node_increment_counter (vm, node->node_index,
4145 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
4147 vec_free (itr_rlocs);
4151 parse_map_reply (vlib_buffer_t * b)
4158 map_reply_hdr_t *mrep_hdr;
4159 map_records_arg_t *a;
4161 a = map_record_args_get ();
4162 memset (a, 0, sizeof (*a));
4164 locator_t *locators;
4166 mrep_hdr = vlib_buffer_get_current (b);
4167 a->nonce = MREP_NONCE (mrep_hdr);
4168 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
4169 if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
4174 vlib_buffer_pull (b, sizeof (*mrep_hdr));
4176 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
4178 memset (&m, 0, sizeof (m));
4180 h = vlib_buffer_get_current (b);
4182 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
4183 m.action = MAP_REC_ACTION (h);
4184 m.authoritative = MAP_REC_AUTH (h);
4186 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
4189 clib_warning ("Failed to parse mapping record!");
4190 map_records_arg_free (a);
4194 m.locators = locators;
4195 gid_address_copy (&m.eid, &deid);
4196 vec_add1 (a->mappings, m);
4202 queue_map_reply_for_processing (map_records_arg_t * a)
4204 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
4208 queue_map_notify_for_processing (map_records_arg_t * a)
4210 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
4214 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
4215 vlib_frame_t * from_frame)
4217 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
4218 map_notifies_recv = 0;
4219 lisp_msg_type_e type;
4220 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4221 map_records_arg_t *a;
4223 from = vlib_frame_vector_args (from_frame);
4224 n_left_from = from_frame->n_vectors;
4227 while (n_left_from > 0)
4229 u32 n_left_to_next_drop;
4231 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4232 to_next_drop, n_left_to_next_drop);
4233 while (n_left_from > 0 && n_left_to_next_drop > 0)
4241 to_next_drop[0] = bi0;
4243 n_left_to_next_drop -= 1;
4245 b0 = vlib_get_buffer (vm, bi0);
4247 type = lisp_msg_type (vlib_buffer_get_current (b0));
4250 case LISP_MAP_REPLY:
4251 a = parse_map_reply (b0);
4254 if (a->is_rloc_probe)
4255 rloc_probe_rep_recv++;
4256 queue_map_reply_for_processing (a);
4259 case LISP_MAP_REQUEST:
4260 process_map_request (vm, node, lcm, b0);
4262 case LISP_MAP_NOTIFY:
4263 a = parse_map_notify (b0);
4266 map_notifies_recv++;
4267 queue_map_notify_for_processing (a);
4271 clib_warning ("Unsupported LISP message type %d", type);
4275 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
4277 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
4283 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4284 n_left_to_next_drop);
4286 vlib_node_increment_counter (vm, node->node_index,
4287 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
4288 rloc_probe_rep_recv);
4289 vlib_node_increment_counter (vm, node->node_index,
4290 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
4292 return from_frame->n_vectors;
4296 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
4297 .function = lisp_cp_input,
4298 .name = "lisp-cp-input",
4299 .vector_size = sizeof (u32),
4300 .format_trace = format_lisp_cp_input_trace,
4301 .type = VLIB_NODE_TYPE_INTERNAL,
4303 .n_errors = LISP_CP_INPUT_N_ERROR,
4304 .error_strings = lisp_cp_input_error_strings,
4306 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
4309 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
4315 lisp_cp_init (vlib_main_t * vm)
4317 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4318 clib_error_t *error = 0;
4319 vlib_thread_main_t *vtm = vlib_get_thread_main ();
4322 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
4325 lcm->im4 = &ip4_main;
4326 lcm->im6 = &ip6_main;
4327 lcm->vlib_main = vm;
4328 lcm->vnet_main = vnet_get_main ();
4329 lcm->mreq_itr_rlocs = ~0;
4332 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
4333 memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
4335 gid_dictionary_init (&lcm->mapping_index_by_gid);
4336 lcm->do_map_resolver_election = 1;
4337 lcm->do_map_server_election = 1;
4338 lcm->map_request_mode = MR_MODE_DST_ONLY;
4340 num_threads = 1 /* main thread */ + vtm->n_threads;
4341 vec_validate (lcm->map_records_args_pool, num_threads - 1);
4343 /* default vrf mapped to vni 0 */
4344 hash_set (lcm->table_id_by_vni, 0, 0);
4345 hash_set (lcm->vni_by_table_id, 0, 0);
4347 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
4348 lisp_cp_input_node.index, 1 /* is_ip4 */ );
4349 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
4350 lisp_cp_input_node.index, 0 /* is_ip4 */ );
4352 u64 now = clib_cpu_time_now ();
4353 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
4354 lcm->nsh_map_index = ~0;
4355 lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
4356 lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
4357 lcm->expired_map_registers = 0;
4358 lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
4363 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
4364 lisp_api_stats_t * stat, lisp_stats_key_t * key,
4368 vlib_combined_counter_main_t *cm = &lgm->counters;
4369 lisp_gpe_fwd_entry_key_t fwd_key;
4370 const lisp_gpe_tunnel_t *lgt;
4373 memset (stat, 0, sizeof (*stat));
4374 memset (&fwd_key, 0, sizeof (fwd_key));
4376 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
4379 gid_to_dp_address (&fe->reid, &stat->deid);
4380 gid_to_dp_address (&fe->leid, &stat->seid);
4381 stat->vni = gid_address_vni (&fe->reid);
4383 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
4384 stat->loc_rloc = lgt->key->lcl;
4385 stat->rmt_rloc = lgt->key->rmt;
4387 vlib_get_combined_counter (cm, stats_index, &v);
4393 vnet_lisp_get_stats (void)
4395 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
4396 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4397 lisp_api_stats_t *stats = 0, stat;
4398 lisp_stats_key_t *key;
4402 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
4404 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
4405 vec_add1 (stats, stat);
4413 send_map_request_thread_fn (void *arg)
4415 map_request_args_t *a = arg;
4416 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4419 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4421 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4427 queue_map_request (gid_address_t * seid, gid_address_t * deid,
4428 u8 smr_invoked, u8 is_resend)
4430 map_request_args_t a;
4432 a.is_resend = is_resend;
4433 gid_address_copy (&a.seid, seid);
4434 gid_address_copy (&a.deid, deid);
4435 a.smr_invoked = smr_invoked;
4437 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
4438 (u8 *) & a, sizeof (a));
4443 * Take an action with a pending map request depending on expiration time
4444 * and re-try counters.
4447 update_pending_request (pending_map_request_t * r, f64 dt)
4449 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4452 if (r->time_to_expire - dt < 0)
4453 /* it's time to decide what to do with this pending request */
4455 if (r->retries_num >= NUMBER_OF_RETRIES)
4456 /* too many retries -> assume current map resolver is not available */
4458 mr = get_map_resolver (&lcm->active_map_resolver);
4461 clib_warning ("Map resolver %U not found - probably deleted "
4462 "by the user recently.", format_ip_address,
4463 &lcm->active_map_resolver);
4467 clib_warning ("map resolver %U is unreachable, ignoring",
4468 format_ip_address, &lcm->active_map_resolver);
4470 /* mark current map resolver unavailable so it won't be
4471 * selected next time */
4473 mr->last_update = vlib_time_now (lcm->vlib_main);
4476 reset_pending_mr_counters (r);
4477 elect_map_resolver (lcm);
4479 /* try to find a next eligible map resolver and re-send */
4480 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4486 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4489 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
4493 r->time_to_expire -= dt;
4497 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
4500 pending_map_request_t *pmr;
4501 u32 *to_be_removed = 0, *pmr_index;
4504 pool_foreach (pmr, lcm->pending_map_requests_pool,
4506 if (pmr->to_be_removed)
4508 clib_fifo_foreach (nonce, pmr->nonces, ({
4509 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
4512 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
4517 vec_foreach (pmr_index, to_be_removed)
4518 pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
4520 vec_free (to_be_removed);
4524 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
4526 static f64 time_left = RLOC_PROBING_INTERVAL;
4528 if (!lcm->is_enabled || !lcm->rloc_probing)
4534 time_left = RLOC_PROBING_INTERVAL;
4535 send_rloc_probes (lcm);
4540 update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
4542 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4546 r->time_to_expire -= dt;
4548 if (r->time_to_expire < 0)
4550 lcm->expired_map_registers++;
4552 if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
4554 ms = get_map_server (&lcm->active_map_server);
4557 clib_warning ("Map server %U not found - probably deleted "
4558 "by the user recently.", format_ip_address,
4559 &lcm->active_map_server);
4563 clib_warning ("map server %U is unreachable, ignoring",
4564 format_ip_address, &lcm->active_map_server);
4566 /* mark current map server unavailable so it won't be
4567 * elected next time */
4569 ms->last_update = vlib_time_now (lcm->vlib_main);
4572 elect_map_server (lcm);
4574 /* indication for deleting all pending map registers */
4576 lcm->expired_map_registers = 0;
4581 /* delete pending map register */
4589 update_map_register (lisp_cp_main_t * lcm, f64 dt)
4591 u32 *to_be_removed = 0, *pmr_index;
4592 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
4593 static u64 mreg_sent_counter = 0;
4595 pending_map_register_t *pmr;
4598 if (!lcm->is_enabled || !lcm->map_registering)
4602 pool_foreach (pmr, lcm->pending_map_registers_pool,
4604 if (!update_pending_map_register (pmr, dt, &del_all))
4608 vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
4615 /* delete all pending map register messages so they won't
4616 * trigger another map server election.. */
4617 pool_free (lcm->pending_map_registers_pool);
4618 hash_free (lcm->map_register_messages_by_nonce);
4620 /* ..and trigger registration against next map server (if any) */
4625 vec_foreach (pmr_index, to_be_removed)
4626 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4629 vec_free (to_be_removed);
4634 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
4635 time_left = MAP_REGISTER_INTERVAL;
4638 mreg_sent_counter++;
4639 time_left = QUICK_MAP_REGISTER_INTERVAL;
4641 send_map_register (lcm, 1 /* want map notify */ );
4646 send_map_resolver_service (vlib_main_t * vm,
4647 vlib_node_runtime_t * rt, vlib_frame_t * f)
4651 pending_map_request_t *pmr;
4652 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4656 vlib_process_wait_for_event_or_clock (vm, period);
4658 /* currently no signals are expected - just wait for clock */
4659 (void) vlib_process_get_events (vm, 0);
4662 pool_foreach (pmr, lcm->pending_map_requests_pool,
4664 if (!pmr->to_be_removed)
4665 update_pending_request (pmr, period);
4669 remove_dead_pending_map_requests (lcm);
4671 update_map_register (lcm, period);
4672 update_rloc_probing (lcm, period);
4674 u64 now = clib_cpu_time_now ();
4676 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
4677 if (vec_len (expired) > 0)
4680 vec_foreach (mi, expired)
4682 process_expired_mapping (lcm, mi[0]);
4684 _vec_len (expired) = 0;
4693 vnet_lisp_stats_enable_disable (u8 enable)
4695 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4697 if (vnet_lisp_enable_disable_status () == 0)
4698 return VNET_API_ERROR_LISP_DISABLED;
4701 lcm->flags |= LISP_FLAG_STATS_ENABLED;
4703 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
4709 vnet_lisp_stats_enable_disable_state (void)
4711 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4713 if (vnet_lisp_enable_disable_status () == 0)
4714 return VNET_API_ERROR_LISP_DISABLED;
4716 return lcm->flags & LISP_FLAG_STATS_ENABLED;
4720 VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
4721 .function = send_map_resolver_service,
4722 .type = VLIB_NODE_TYPE_PROCESS,
4723 .name = "lisp-retry-service",
4724 .process_log2_n_stack_bytes = 16,
4729 vnet_lisp_set_transport_protocol (u8 protocol)
4731 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4733 if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
4734 protocol > LISP_TRANSPORT_PROTOCOL_API)
4735 return VNET_API_ERROR_INVALID_ARGUMENT;
4737 lcm->transport_protocol = protocol;
4741 lisp_transport_protocol_t
4742 vnet_lisp_get_transport_protocol (void)
4744 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4745 return lcm->transport_protocol;
4748 VLIB_INIT_FUNCTION (lisp_cp_init);
4751 * fd.io coding-style-patch-verification: ON
4754 * eval: (c-set-style "gnu")