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,
1827 u32 mapping_index, u8 remove_only)
1831 uword *fei = 0, *rmts_idxp = 0;
1832 u32 **rmts = 0, *remote_idxp = 0, *rmts_copy = 0;
1833 vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
1834 memset (a, 0, sizeof (*a));
1836 map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
1840 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mapping_index);
1844 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
1845 rmts_copy = vec_dup (rmts[0]);
1847 vec_foreach (remote_idxp, rmts_copy)
1849 fei = hash_get (lcm->fwd_entry_by_mapping_index, remote_idxp[0]);
1853 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1855 gid_address_copy (&a->leid, &fwd->leid);
1856 gid_address_copy (&a->reid, &fwd->reid);
1857 vnet_lisp_add_del_adjacency (a);
1862 vnet_lisp_add_del_adjacency (a);
1865 vec_free (rmts_copy);
1870 fei = hash_get (lcm->fwd_entry_by_mapping_index, mapping_index);
1874 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1876 gid_address_copy (&a->leid, &fwd->leid);
1877 gid_address_copy (&a->reid, &fwd->reid);
1878 vnet_lisp_add_del_adjacency (a);
1883 vnet_lisp_add_del_adjacency (a);
1889 update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm,
1890 u32 ls_index, u8 remove_only)
1895 if (vec_len (lcm->locator_set_to_eids) <= ls_index)
1898 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
1900 for (i = 0; i < vec_len (eid_indexes[0]); i++)
1902 map_indexp = vec_elt_at_index (eid_indexes[0], i);
1903 update_adjacencies_by_map_index (lcm, map_indexp[0], remove_only);
1908 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1909 u32 ls_index, u32 loc_id)
1911 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1912 u32 **ls_indexes = NULL;
1914 ASSERT (ls != NULL);
1915 ASSERT (locit != NULL);
1917 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1918 pool_put_index (lcm->locator_pool, locit[0]);
1919 vec_del1 (ls->locator_indices, loc_id);
1920 vec_del1 (ls_indexes[0], ls_index);
1924 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1925 locator_set_t * ls, u32 * ls_result)
1927 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1928 locator_t *loc = NULL, *itloc = NULL;
1929 uword _p = (u32) ~ 0, *p = &_p;
1930 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1936 if (vnet_lisp_enable_disable_status () == 0)
1938 clib_warning ("LISP is disabled!");
1939 return VNET_API_ERROR_LISP_DISABLED;
1942 p = get_locator_set_index (a, p);
1945 clib_warning ("locator-set %v doesn't exist", a->name);
1946 return VNET_API_ERROR_INVALID_ARGUMENT;
1951 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1954 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1956 return VNET_API_ERROR_INVALID_ARGUMENT;
1963 ls_result[0] = p[0];
1965 /* allocate locators */
1966 vec_foreach (itloc, a->locators)
1968 ret = is_locator_in_locator_set (lcm, ls, itloc);
1974 pool_get (lcm->locator_pool, loc);
1976 loc_index = loc - lcm->locator_pool;
1978 vec_add1 (ls->locator_indices, loc_index);
1980 vec_validate (lcm->locator_to_locator_sets, loc_index);
1981 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1983 vec_add1 (ls_indexes[0], p[0]);
1991 vec_foreach (itloc, a->locators)
1995 vec_foreach (locit, ls->locator_indices)
1997 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1999 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
2002 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
2004 if (0 == loc->local &&
2005 !gid_address_cmp (&loc->address, &itloc->address))
2008 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
2013 /* update fwd entries using this locator in DP */
2014 update_fwd_entries_by_locator_set (lcm, ls_index,
2015 vec_len (ls->locator_indices)
2028 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
2031 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2033 uword _p = (u32) ~ 0, *p = &_p;
2038 if (vnet_lisp_enable_disable_status () == 0)
2040 clib_warning ("LISP is disabled!");
2041 return VNET_API_ERROR_LISP_DISABLED;
2046 p = get_locator_set_index (a, p);
2049 if (p && p[0] != (u32) ~ 0)
2051 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2054 clib_warning ("locator-set %d to be overwritten doesn't exist!",
2059 /* clean locator to locator-set vectors and remove locators if
2060 * they're not part of another locator-set */
2061 clean_locator_to_locator_set (lcm, p[0]);
2063 /* remove locator indices from locator set */
2064 vec_free (ls->locator_indices);
2069 ls_result[0] = p[0];
2071 /* new locator-set */
2074 pool_get (lcm->locator_set_pool, ls);
2075 memset (ls, 0, sizeof (*ls));
2076 ls_index = ls - lcm->locator_set_pool;
2080 ls->name = vec_dup (a->name);
2082 if (!lcm->locator_set_index_by_name)
2083 lcm->locator_set_index_by_name = hash_create_vec (
2091 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
2094 /* mark as local locator-set */
2095 vec_add1 (lcm->local_locator_set_indexes, ls_index);
2097 ls->local = a->local;
2099 ls_result[0] = ls_index;
2102 ret = vnet_lisp_add_del_locator (a, ls, NULL);
2110 p = get_locator_set_index (a, p);
2113 clib_warning ("locator-set %v doesn't exists", a->name);
2117 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2120 clib_warning ("locator-set with index %d doesn't exists", p[0]);
2124 if (lcm->mreq_itr_rlocs == p[0])
2126 clib_warning ("Can't delete the locator-set used to constrain "
2127 "the itr-rlocs in map-requests!");
2131 if (vec_len (lcm->locator_set_to_eids) != 0)
2133 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
2134 if (vec_len (eid_indexes[0]) != 0)
2137 ("Can't delete a locator that supports a mapping!");
2142 /* clean locator to locator-sets data */
2143 clean_locator_to_locator_set (lcm, p[0]);
2149 vec_foreach_index (it, lcm->local_locator_set_indexes)
2151 lsi = vec_elt (lcm->local_locator_set_indexes, it);
2154 vec_del1 (lcm->local_locator_set_indexes, it);
2158 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
2160 vec_free (ls->name);
2161 vec_free (ls->locator_indices);
2162 pool_put (lcm->locator_set_pool, ls);
2168 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
2170 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2172 lcm->rloc_probing = is_enable;
2177 vnet_lisp_map_register_enable_disable (u8 is_enable)
2179 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2181 lcm->map_registering = is_enable;
2186 vnet_lisp_enable_disable (u8 is_enable)
2188 u32 vni, dp_table, **rmts;
2189 clib_error_t *error = 0;
2190 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2191 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
2193 a->is_en = is_enable;
2194 error = vnet_lisp_gpe_enable_disable (a);
2197 return clib_error_return (0, "failed to %s data-plane!",
2198 a->is_en ? "enable" : "disable");
2203 /* enable all l2 and l3 ifaces */
2206 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
2207 dp_add_del_iface(lcm, vni, 0, 1);
2209 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
2210 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
2216 /* clear interface table */
2217 hash_free (lcm->fwd_entry_by_mapping_index);
2218 pool_free (lcm->fwd_entry_pool);
2219 /* Clear state tracking rmt-lcl fwd entries */
2221 pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
2226 hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
2227 pool_free (lcm->lcl_to_rmt_adjacencies);
2230 /* update global flag */
2231 lcm->is_enabled = is_enable;
2237 vnet_lisp_enable_disable_status (void)
2239 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2240 return lcm->is_enabled;
2244 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
2246 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2248 lisp_msmr_t _mr, *mr = &_mr;
2250 if (vnet_lisp_enable_disable_status () == 0)
2252 clib_warning ("LISP is disabled!");
2253 return VNET_API_ERROR_LISP_DISABLED;
2259 if (get_map_resolver (&a->address))
2261 clib_warning ("map-resolver %U already exists!", format_ip_address,
2266 memset (mr, 0, sizeof (*mr));
2267 ip_address_copy (&mr->address, &a->address);
2268 vec_add1 (lcm->map_resolvers, *mr);
2270 if (vec_len (lcm->map_resolvers) == 1)
2271 lcm->do_map_resolver_election = 1;
2275 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
2277 mr = vec_elt_at_index (lcm->map_resolvers, i);
2278 if (!ip_address_cmp (&mr->address, &a->address))
2280 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
2281 lcm->do_map_resolver_election = 1;
2283 vec_del1 (lcm->map_resolvers, i);
2292 vnet_lisp_map_register_set_ttl (u32 ttl)
2294 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2295 lcm->map_register_ttl = ttl;
2300 vnet_lisp_map_register_get_ttl (void)
2302 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2303 return lcm->map_register_ttl;
2307 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
2309 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2312 if (vnet_lisp_enable_disable_status () == 0)
2314 clib_warning ("LISP is disabled!");
2315 return VNET_API_ERROR_LISP_DISABLED;
2320 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
2323 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
2324 return VNET_API_ERROR_INVALID_ARGUMENT;
2327 lcm->mreq_itr_rlocs = p[0];
2331 lcm->mreq_itr_rlocs = ~0;
2337 /* Statistics (not really errors) */
2338 #define foreach_lisp_cp_lookup_error \
2340 _(MAP_REQUESTS_SENT, "map-request sent") \
2341 _(ARP_REPLY_TX, "ARP replies sent") \
2342 _(NDP_NEIGHBOR_ADVERTISEMENT_TX, \
2343 "neighbor advertisement sent")
2345 static char *lisp_cp_lookup_error_strings[] = {
2346 #define _(sym,string) string,
2347 foreach_lisp_cp_lookup_error
2353 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
2354 foreach_lisp_cp_lookup_error
2356 LISP_CP_LOOKUP_N_ERROR,
2357 } lisp_cp_lookup_error_t;
2361 LISP_CP_LOOKUP_NEXT_DROP,
2362 LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
2363 LISP_CP_LOOKUP_N_NEXT,
2364 } lisp_cp_lookup_next_t;
2368 gid_address_t dst_eid;
2369 ip_address_t map_resolver_ip;
2370 } lisp_cp_lookup_trace_t;
2373 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
2375 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2376 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2377 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
2379 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
2380 format_ip_address, &t->map_resolver_ip, format_gid_address,
2386 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
2387 ip_address_t * sloc)
2392 if (vec_len (lcm->map_resolvers) == 0)
2394 clib_warning ("No map-resolver configured");
2398 /* find the first mr ip we have a route to and the ip of the
2399 * iface that has a route to it */
2400 vec_foreach (mrit, lcm->map_resolvers)
2403 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
2405 ip_address_copy (mr_ip, a);
2407 /* also update globals */
2412 clib_warning ("Can't find map-resolver and local interface ip!");
2416 static gid_address_t *
2417 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
2423 ip_interface_address_t *ia = 0;
2424 gid_address_t gid_data, *gid = &gid_data;
2425 gid_address_t *rlocs = 0;
2426 ip_prefix_t *ippref = &gid_address_ippref (gid);
2427 ip_address_t *rloc = &ip_prefix_addr (ippref);
2429 memset (gid, 0, sizeof (gid[0]));
2430 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
2431 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
2433 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
2434 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
2436 /* Add ipv4 locators first TODO sort them */
2439 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2440 loc->sw_if_index, 1 /* unnumbered */,
2442 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
2443 ip_address_set (rloc, addr, IP4);
2444 ip_prefix_len (ippref) = 32;
2445 ip_prefix_normalize (ippref);
2446 vec_add1 (rlocs, gid[0]);
2449 /* Add ipv6 locators */
2450 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2451 loc->sw_if_index, 1 /* unnumbered */,
2453 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
2454 ip_address_set (rloc, addr, IP6);
2455 ip_prefix_len (ippref) = 128;
2456 ip_prefix_normalize (ippref);
2457 vec_add1 (rlocs, gid[0]);
2465 static vlib_buffer_t *
2466 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
2467 ip_address_t * sloc, ip_address_t * rloc,
2468 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
2472 vlib_main_t *vm = lcm->vlib_main;
2474 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2476 clib_warning ("Can't allocate buffer for Map-Request!");
2480 b = vlib_get_buffer (vm, bi);
2482 /* leave some space for the encap headers */
2483 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2486 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2487 1 /* rloc probe */ , nonce_res);
2489 /* push outer ip header */
2490 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2498 static vlib_buffer_t *
2499 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2500 gid_address_t * seid, gid_address_t * deid,
2501 locator_set_t * loc_set, ip_address_t * mr_ip,
2502 ip_address_t * sloc, u8 is_smr_invoked,
2503 u64 * nonce_res, u32 * bi_res)
2507 gid_address_t *rlocs = 0;
2508 vlib_main_t *vm = lcm->vlib_main;
2510 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2512 clib_warning ("Can't allocate buffer for Map-Request!");
2516 b = vlib_get_buffer (vm, bi);
2519 /* leave some space for the encap headers */
2520 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2523 rlocs = build_itr_rloc_list (lcm, loc_set);
2525 if (MR_MODE_SRC_DST == lcm->map_request_mode
2526 && GID_ADDR_SRC_DST != gid_address_type (deid))
2529 memset (&sd, 0, sizeof (sd));
2530 build_src_dst (&sd, seid, deid);
2531 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2532 0 /* rloc probe */ , nonce_res);
2537 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2538 0 /* rloc probe */ , nonce_res);
2541 /* push ecm: udp-ip-lisp */
2542 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2544 /* push outer ip header */
2545 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2555 reset_pending_mr_counters (pending_map_request_t * r)
2557 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2561 #define foreach_msmr \
2567 elect_map_ ## name (lisp_cp_main_t * lcm) \
2570 vec_foreach (mr, lcm->map_ ## name ## s) \
2574 ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
2575 lcm->do_map_ ## name ## _election = 0; \
2584 free_map_register_records (mapping_t * maps)
2587 vec_foreach (map, maps) vec_free (map->locators);
2593 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2594 ip_address_t * probed_loc)
2597 locator_t *loc, new;
2598 ip_interface_address_t *ia = 0;
2600 ip_address_t *new_ip = &gid_address_ip (&new.address);
2603 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2605 vec_foreach (li, ls->locator_indices)
2607 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2612 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2613 loc->sw_if_index, 1 /* unnumbered */,
2615 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2617 ip_address_set (new_ip, addr, IP4);
2620 /* Add ipv6 locators */
2621 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2622 loc->sw_if_index, 1 /* unnumbered */,
2624 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2626 ip_address_set (new_ip, addr, IP6);
2630 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2633 vec_add1 (m->locators, new);
2638 build_map_register_record_list (lisp_cp_main_t * lcm)
2640 mapping_t *recs = 0, rec, *m;
2643 pool_foreach(m, lcm->mapping_pool,
2645 /* for now build only local mappings */
2650 add_locators (lcm, &rec, m->locator_set_index, NULL);
2651 vec_add1 (recs, rec);
2659 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2660 lisp_key_type_t key_id, u8 * key,
2661 u16 auth_data_len, u32 msg_len)
2663 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2664 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2666 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2667 (unsigned char *) map_reg_hdr, msg_len, NULL,
2669 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2674 static vlib_buffer_t *
2675 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2676 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2677 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2682 u32 bi, auth_data_len = 0, msg_len = 0;
2683 vlib_main_t *vm = lcm->vlib_main;
2685 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2687 clib_warning ("Can't allocate buffer for Map-Register!");
2691 b = vlib_get_buffer (vm, bi);
2693 /* leave some space for the encap headers */
2694 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2696 auth_data_len = auth_data_len_by_key_id (key_id);
2697 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2698 auth_data_len, nonce_res,
2701 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2704 /* push outer ip header */
2705 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2714 get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
2717 while (lcm->do_map_ ## name ## _election \
2718 | (0 == ip_fib_get_first_egress_ip_for_dst \
2719 (lcm, &lcm->active_map_ ##name, ip))) \
2721 if (0 == elect_map_ ## name (lcm)) \
2722 /* all map resolvers/servers are down */ \
2724 /* restart MR/MS checking by marking all of them up */ \
2725 vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
2734 /* CP output statistics */
2735 #define foreach_lisp_cp_output_error \
2736 _(MAP_REGISTERS_SENT, "map-registers sent") \
2737 _(MAP_REQUESTS_SENT, "map-requests sent") \
2738 _(RLOC_PROBES_SENT, "rloc-probes sent")
2739 static char *lisp_cp_output_error_strings[] = {
2740 #define _(sym,string) string,
2741 foreach_lisp_cp_output_error
2747 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2748 foreach_lisp_cp_output_error
2750 LISP_CP_OUTPUT_N_ERROR,
2751 } lisp_cp_output_error_t;
2754 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2755 vlib_frame_t * from_frame)
2760 /* dummy node used only for statistics */
2762 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2763 .function = lisp_cp_output,
2764 .name = "lisp-cp-output",
2765 .vector_size = sizeof (u32),
2766 .format_trace = format_lisp_cp_input_trace,
2767 .type = VLIB_NODE_TYPE_INTERNAL,
2769 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2770 .error_strings = lisp_cp_output_error_strings,
2772 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2775 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2781 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2782 u32 local_locator_set_index, ip_address_t * sloc,
2783 ip_address_t * rloc)
2790 u32 next_index, *to_next;
2791 gid_address_t *itr_rlocs;
2793 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2794 itr_rlocs = build_itr_rloc_list (lcm, ls);
2796 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2797 vec_free (itr_rlocs);
2801 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2803 next_index = (ip_addr_version (rloc) == IP4) ?
2804 ip4_lookup_node.index : ip6_lookup_node.index;
2806 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2808 /* Enqueue the packet */
2809 to_next = vlib_frame_vector_args (f);
2812 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2818 send_rloc_probes (lisp_cp_main_t * lcm)
2824 u32 si, rloc_probes_sent = 0;
2827 pool_foreach (e, lcm->fwd_entry_pool,
2829 if (vec_len (e->locator_pairs) == 0)
2832 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2835 clib_warning ("internal error: cannot find local eid %U in "
2836 "map-cache!", format_gid_address, &e->leid);
2839 lm = pool_elt_at_index (lcm->mapping_pool, si);
2841 /* get the best (lowest) priority */
2842 lprio = e->locator_pairs[0].priority;
2844 /* send rloc-probe for pair(s) with the best remote locator priority */
2845 vec_foreach (lp, e->locator_pairs)
2847 if (lp->priority != lprio)
2850 /* get first remote locator */
2851 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2858 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2859 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2865 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2867 pending_map_register_t *pmr;
2868 u32 bi, map_registers_sent = 0;
2873 u32 next_index, *to_next;
2874 mapping_t *records, *r, *group, *k;
2876 if (get_egress_map_server_ip (lcm, &sloc) < 0)
2879 records = build_map_register_record_list (lcm);
2883 vec_foreach (r, records)
2886 u8 key_id = r->key_id;
2889 continue; /* no secret key -> map-register cannot be sent */
2892 vec_add1 (group, r[0]);
2894 /* group mappings that share common key */
2895 for (k = r + 1; k < vec_end (records); k++)
2897 if (k->key_id != r->key_id)
2900 if (vec_is_equal (k->key, r->key))
2902 vec_add1 (group, k[0]);
2903 k->key = 0; /* don't process this mapping again */
2907 b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
2908 want_map_notif, group, key_id, key, &bi);
2913 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2915 next_index = (ip_addr_version (&lcm->active_map_server) == IP4) ?
2916 ip4_lookup_node.index : ip6_lookup_node.index;
2918 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2920 /* Enqueue the packet */
2921 to_next = vlib_frame_vector_args (f);
2924 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2925 map_registers_sent++;
2927 pool_get (lcm->pending_map_registers_pool, pmr);
2928 memset (pmr, 0, sizeof (*pmr));
2929 pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
2930 hash_set (lcm->map_register_messages_by_nonce, nonce,
2931 pmr - lcm->pending_map_registers_pool);
2933 free_map_register_records (records);
2935 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2936 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
2937 map_registers_sent);
2942 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
2943 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
2945 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
2946 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
2949 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
2950 gid_address_t * seid, gid_address_t * deid,
2951 u8 is_smr_invoked, u8 is_resend)
2953 u32 next_index, bi = 0, *to_next, map_index;
2957 locator_set_t *loc_set;
2959 pending_map_request_t *pmr, *duplicate_pmr = 0;
2963 /* if there is already a pending request remember it */
2966 pool_foreach(pmr, lcm->pending_map_requests_pool,
2968 if (!gid_address_cmp (&pmr->src, seid)
2969 && !gid_address_cmp (&pmr->dst, deid))
2971 duplicate_pmr = pmr;
2977 if (!is_resend && duplicate_pmr)
2979 /* don't send the request if there is a pending map request already */
2983 /* get locator-set for seid */
2984 if (!lcm->lisp_pitr && gid_address_type (deid) != GID_ADDR_NSH)
2986 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
2987 if (map_index == ~0)
2989 clib_warning ("No local mapping found in eid-table for %U!",
2990 format_gid_address, seid);
2994 map = pool_elt_at_index (lcm->mapping_pool, map_index);
2999 ("Mapping found for src eid %U is not marked as local!",
3000 format_gid_address, seid);
3003 ls_index = map->locator_set_index;
3009 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
3010 ls_index = map->locator_set_index;
3014 if (lcm->nsh_map_index == (u32) ~ 0)
3016 clib_warning ("No locator-set defined for NSH!");
3021 map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
3022 ls_index = map->locator_set_index;
3027 /* overwrite locator set if map-request itr-rlocs configured */
3028 if (~0 != lcm->mreq_itr_rlocs)
3030 ls_index = lcm->mreq_itr_rlocs;
3033 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
3035 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
3038 duplicate_pmr->to_be_removed = 1;
3042 /* build the encapsulated map request */
3043 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
3044 &lcm->active_map_resolver,
3045 &sloc, is_smr_invoked, &nonce, &bi);
3050 /* set fib index to default and lookup node */
3051 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3052 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3053 ip4_lookup_node.index : ip6_lookup_node.index;
3055 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3057 /* Enqueue the packet */
3058 to_next = vlib_frame_vector_args (f);
3061 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3063 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3064 LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1);
3067 /* if there is a pending request already update it */
3069 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
3071 /* remove the oldest nonce */
3072 u64 CLIB_UNUSED (tmp), *nonce_del;
3073 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
3074 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
3075 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
3078 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
3079 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3080 duplicate_pmr - lcm->pending_map_requests_pool);
3084 /* add map-request to pending requests table */
3085 pool_get (lcm->pending_map_requests_pool, pmr);
3086 memset (pmr, 0, sizeof (*pmr));
3087 gid_address_copy (&pmr->src, seid);
3088 gid_address_copy (&pmr->dst, deid);
3089 clib_fifo_add1 (pmr->nonces, nonce);
3090 pmr->is_smr_invoked = is_smr_invoked;
3091 reset_pending_mr_counters (pmr);
3092 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3093 pmr - lcm->pending_map_requests_pool);
3100 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
3102 ip4_header_t *ip4 = hdr;
3105 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
3107 ip_address_set (src, &ip4->src_address, IP4);
3108 ip_address_set (dst, &ip4->dst_address, IP4);
3113 ip_address_set (src, &ip6->src_address, IP6);
3114 ip_address_set (dst, &ip6->dst_address, IP6);
3119 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3123 u32 vni = ~0, table_id = ~0;
3125 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
3126 IP4 ? FIB_PROTOCOL_IP4 :
3132 vnip = hash_get (lcm->vni_by_table_id, table_id);
3136 clib_warning ("vrf %d is not mapped to any vni!", table_id);
3142 lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
3146 l2input_main_t *l2im = &l2input_main;
3147 l2_input_config_t *config;
3148 l2_bridge_domain_t *bd_config;
3150 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
3151 config = vec_elt_at_index (l2im->configs, sw_if_index0);
3152 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
3154 return bd_config->bd_id;
3158 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
3162 u32 bd = lisp_get_bd_from_buffer_eth (b);
3164 vnip = hash_get (lcm->vni_by_bd_id, bd);
3168 clib_warning ("bridge domain %d is not mapped to any vni!", bd);
3174 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3175 gid_address_t * src, gid_address_t * dst,
3178 ethernet_header_t *eh;
3180 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3182 memset (src, 0, sizeof (*src));
3183 memset (dst, 0, sizeof (*dst));
3185 gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
3186 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3188 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
3191 u8 version, preflen;
3193 gid_address_type (src) = GID_ADDR_IP_PREFIX;
3194 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
3196 ip = vlib_buffer_get_current (b);
3197 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
3199 version = gid_address_ip_version (src);
3200 preflen = ip_address_max_len (version);
3201 gid_address_ippref_len (src) = preflen;
3202 gid_address_ippref_len (dst) = preflen;
3204 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
3205 gid_address_vni (dst) = vni;
3206 gid_address_vni (src) = vni;
3208 else if (LISP_AFI_MAC == type)
3210 ethernet_arp_header_t *ah;
3212 eh = vlib_buffer_get_current (b);
3214 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
3216 ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
3217 if (clib_net_to_host_u16 (ah->opcode)
3218 != ETHERNET_ARP_OPCODE_request)
3221 gid_address_type (dst) = GID_ADDR_ARP;
3222 gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
3223 clib_memcpy (&gid_address_arp_ip4 (dst),
3224 &ah->ip4_over_ethernet[1].ip4, 4);
3228 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
3231 ip = (ip6_header_t *) (eh + 1);
3233 if (IP_PROTOCOL_ICMP6 == ip->protocol)
3235 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3236 ndh = ip6_next_header (ip);
3237 if (ndh->icmp.type == ICMP6_neighbor_solicitation)
3239 opt = (void *) (ndh + 1);
3240 if ((opt->header.type !=
3241 ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
3242 || (opt->header.n_data_u64s != 1))
3243 return; /* source link layer address option not present */
3245 gid_address_type (dst) = GID_ADDR_NDP;
3246 gid_address_ndp_bd (dst) =
3247 lisp_get_bd_from_buffer_eth (b);
3248 ip_address_set (&gid_address_arp_ndp_ip (dst),
3249 &ndh->target_address, IP6);
3255 gid_address_type (src) = GID_ADDR_MAC;
3256 gid_address_type (dst) = GID_ADDR_MAC;
3257 mac_copy (&gid_address_mac (src), eh->src_address);
3258 mac_copy (&gid_address_mac (dst), eh->dst_address);
3261 vni = lisp_get_vni_from_buffer_eth (lcm, b);
3263 gid_address_vni (dst) = vni;
3264 gid_address_vni (src) = vni;
3267 else if (LISP_AFI_LCAF == type)
3270 eh = vlib_buffer_get_current (b);
3272 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
3274 nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
3275 u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
3276 u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
3277 gid_address_nsh_spi (dst) = spi;
3278 gid_address_nsh_si (dst) = si;
3280 gid_address_type (dst) = GID_ADDR_NSH;
3281 gid_address_type (src) = GID_ADDR_NSH;
3287 lisp_cp_lookup_inline (vlib_main_t * vm,
3288 vlib_node_runtime_t * node,
3289 vlib_frame_t * from_frame, int overlay)
3291 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3292 u32 *from, *to_next, di, si;
3293 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3295 uword n_left_from, n_left_to_next;
3296 vnet_main_t *vnm = vnet_get_main ();
3298 from = vlib_frame_vector_args (from_frame);
3299 n_left_from = from_frame->n_vectors;
3300 next_index = node->cached_next_index;
3302 while (n_left_from > 0)
3304 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
3306 while (n_left_from > 0 && n_left_to_next > 0)
3308 u32 pi0, sw_if_index0, next0;
3311 gid_address_t src, dst;
3312 ethernet_arp_header_t *arp0;
3313 ethernet_header_t *eth0;
3314 vnet_hw_interface_t *hw_if0;
3315 ethernet_header_t *eh0;
3316 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3324 n_left_to_next -= 1;
3326 b0 = vlib_get_buffer (vm, pi0);
3328 /* src/dst eid pair */
3329 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
3331 if (gid_address_type (&dst) == GID_ADDR_ARP)
3333 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3334 if (GID_LOOKUP_MISS_L2 == mac0)
3337 /* send ARP reply */
3338 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3339 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3341 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3343 eth0 = vlib_buffer_get_current (b0);
3344 arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
3346 arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
3347 arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
3348 clib_memcpy (arp0->ip4_over_ethernet[0].ethernet,
3350 clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
3351 &gid_address_arp_ip4 (&dst), 4);
3353 /* Hardware must be ethernet-like. */
3354 ASSERT (vec_len (hw_if0->hw_address) == 6);
3356 clib_memcpy (eth0->dst_address, eth0->src_address, 6);
3357 clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
3359 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
3360 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3363 else if (gid_address_type (&dst) == GID_ADDR_NDP)
3365 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3366 if (GID_LOOKUP_MISS_L2 == mac0)
3369 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3370 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3372 eh0 = vlib_buffer_get_current (b0);
3373 ip0 = (ip6_header_t *) (eh0 + 1);
3374 ndh = ip6_next_header (ip0);
3376 ip0->dst_address = ip0->src_address;
3377 ip0->src_address = ndh->target_address;
3378 ip0->hop_limit = 255;
3379 opt = (void *) (ndh + 1);
3381 ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
3382 clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
3383 ndh->icmp.type = ICMP6_neighbor_advertisement;
3384 ndh->advertisement_flags = clib_host_to_net_u32
3385 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
3386 ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
3387 ndh->icmp.checksum = 0;
3388 ndh->icmp.checksum =
3389 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
3391 clib_memcpy (eh0->dst_address, eh0->src_address, 6);
3392 clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
3395 [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
3396 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3400 /* if we have remote mapping for destination already in map-chache
3401 add forwarding tunnel directly. If not send a map-request */
3402 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
3406 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
3407 /* send a map-request also in case of negative mapping entry
3408 with corresponding action */
3409 if (m->action == LISP_SEND_MAP_REQUEST)
3411 /* send map-request */
3412 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3413 0 /* is_resend */ );
3417 if (GID_ADDR_NSH != gid_address_type (&dst))
3419 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
3423 si = lcm->nsh_map_index;
3427 dp_add_fwd_entry_from_mt (si, di);
3433 /* send map-request */
3434 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3435 0 /* is_resend */ );
3439 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
3440 next0 = LISP_CP_LOOKUP_NEXT_DROP;
3442 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3444 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
3447 memset (tr, 0, sizeof (*tr));
3448 gid_address_copy (&tr->dst_eid, &dst);
3449 ip_address_copy (&tr->map_resolver_ip,
3450 &lcm->active_map_resolver);
3452 gid_address_free (&dst);
3453 gid_address_free (&src);
3454 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3456 n_left_to_next, pi0, next0);
3459 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
3461 return from_frame->n_vectors;
3465 lisp_cp_lookup_ip4 (vlib_main_t * vm,
3466 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3468 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
3472 lisp_cp_lookup_ip6 (vlib_main_t * vm,
3473 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3475 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
3479 lisp_cp_lookup_l2 (vlib_main_t * vm,
3480 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3482 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
3486 lisp_cp_lookup_nsh (vlib_main_t * vm,
3487 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3489 /* TODO decide if NSH should be propagated as LCAF or not */
3490 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
3494 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
3495 .function = lisp_cp_lookup_ip4,
3496 .name = "lisp-cp-lookup-ip4",
3497 .vector_size = sizeof (u32),
3498 .format_trace = format_lisp_cp_lookup_trace,
3499 .type = VLIB_NODE_TYPE_INTERNAL,
3501 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3502 .error_strings = lisp_cp_lookup_error_strings,
3504 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3507 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3508 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3514 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
3515 .function = lisp_cp_lookup_ip6,
3516 .name = "lisp-cp-lookup-ip6",
3517 .vector_size = sizeof (u32),
3518 .format_trace = format_lisp_cp_lookup_trace,
3519 .type = VLIB_NODE_TYPE_INTERNAL,
3521 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3522 .error_strings = lisp_cp_lookup_error_strings,
3524 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3527 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3528 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3534 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
3535 .function = lisp_cp_lookup_l2,
3536 .name = "lisp-cp-lookup-l2",
3537 .vector_size = sizeof (u32),
3538 .format_trace = format_lisp_cp_lookup_trace,
3539 .type = VLIB_NODE_TYPE_INTERNAL,
3541 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3542 .error_strings = lisp_cp_lookup_error_strings,
3544 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3547 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3548 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3554 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
3555 .function = lisp_cp_lookup_nsh,
3556 .name = "lisp-cp-lookup-nsh",
3557 .vector_size = sizeof (u32),
3558 .format_trace = format_lisp_cp_lookup_trace,
3559 .type = VLIB_NODE_TYPE_INTERNAL,
3561 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3562 .error_strings = lisp_cp_lookup_error_strings,
3564 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3567 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3568 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3573 /* lisp_cp_input statistics */
3574 #define foreach_lisp_cp_input_error \
3576 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
3577 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
3578 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
3579 _(MAP_REPLIES_RECEIVED, "map-replies received")
3581 static char *lisp_cp_input_error_strings[] = {
3582 #define _(sym,string) string,
3583 foreach_lisp_cp_input_error
3589 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
3590 foreach_lisp_cp_input_error
3592 LISP_CP_INPUT_N_ERROR,
3593 } lisp_cp_input_error_t;
3597 gid_address_t dst_eid;
3598 ip4_address_t map_resolver_ip;
3599 } lisp_cp_input_trace_t;
3602 format_lisp_cp_input_trace (u8 * s, va_list * args)
3604 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
3605 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
3606 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
3607 va_arg (*args, lisp_cp_input_trace_t *);
3609 s = format (s, "LISP-CP-INPUT: TODO");
3614 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3617 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3618 memset (adj_args, 0, sizeof (adj_args[0]));
3620 m = pool_elt_at_index (lcm->mapping_pool, mi);
3622 gid_address_copy (&adj_args->reid, &m->eid);
3623 adj_args->is_add = 0;
3624 if (vnet_lisp_add_del_adjacency (adj_args))
3625 clib_warning ("failed to del adjacency!");
3627 vnet_lisp_del_mapping (&m->eid, NULL);
3628 mapping_delete_timer (lcm, mi);
3632 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
3633 f64 expiration_time)
3636 u64 now = clib_cpu_time_now ();
3637 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
3638 u64 exp_clock_time = now + expiration_time * cpu_cps;
3640 m = pool_elt_at_index (lcm->mapping_pool, mi);
3643 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
3647 process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3650 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
3651 mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
3657 if (m->delete_after_expiration)
3659 remove_expired_mapping (lcm, mi);
3663 fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
3667 fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
3669 memset (a, 0, sizeof (*a));
3670 a->rmt_eid = fe->reid;
3672 a->lcl_eid = fe->leid;
3673 a->vni = gid_address_vni (&fe->reid);
3675 rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
3679 if (m->almost_expired)
3681 m->almost_expired = 0; /* reset flag */
3684 if (m->packets != c.packets)
3686 /* mapping is in use, re-fetch */
3687 map_request_args_t mr_args;
3688 memset (&mr_args, 0, sizeof (mr_args));
3689 mr_args.seid = fe->leid;
3690 mr_args.deid = fe->reid;
3692 send_map_request_thread_fn (&mr_args);
3695 remove_expired_mapping (lcm, mi);
3698 remove_expired_mapping (lcm, mi);
3702 m->almost_expired = 1;
3703 mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
3707 m->packets = c.packets;
3709 m->delete_after_expiration = 1;
3714 map_records_arg_free (map_records_arg_t * a)
3716 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3718 vec_foreach (m, a->mappings)
3720 vec_free (m->locators);
3721 gid_address_free (&m->eid);
3723 pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
3727 process_map_reply (map_records_arg_t * a)
3730 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3731 u32 dst_map_index = 0;
3732 pending_map_request_t *pmr;
3737 if (a->is_rloc_probe)
3740 /* Check pending requests table and nonce */
3741 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3744 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3747 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3749 vec_foreach (m, a->mappings)
3751 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
3752 memset (m_args, 0, sizeof (m_args[0]));
3753 gid_address_copy (&m_args->eid, &m->eid);
3754 m_args->action = m->action;
3755 m_args->authoritative = m->authoritative;
3756 m_args->ttl = m->ttl;
3757 m_args->is_static = 0;
3759 /* insert/update mappings cache */
3760 vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
3762 if (dst_map_index == (u32) ~ 0)
3767 /* try to program forwarding only if mapping saved or updated */
3768 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3769 memset (adj_args, 0, sizeof (adj_args[0]));
3771 gid_address_copy (&adj_args->leid, &pmr->src);
3772 gid_address_copy (&adj_args->reid, &m->eid);
3773 adj_args->is_add = 1;
3775 if (vnet_lisp_add_del_adjacency (adj_args))
3776 clib_warning ("failed to add adjacency!");
3779 if ((u32) ~ 0 != m->ttl)
3780 mapping_start_expiration_timer (lcm, dst_map_index, MAPPING_TIMEOUT);
3783 /* remove pending map request entry */
3786 clib_fifo_foreach (noncep, pmr->nonces, ({
3787 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3791 clib_fifo_free (pmr->nonces);
3792 pool_put (lcm->pending_map_requests_pool, pmr);
3800 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3801 lisp_key_type_t key_id, u8 * key)
3807 auth_data_len = auth_data_len_by_key_id (key_id);
3808 if ((u16) ~ 0 == auth_data_len)
3810 clib_warning ("invalid length for key_id %d!", key_id);
3814 /* save auth data */
3815 vec_validate (auth_data, auth_data_len - 1);
3816 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3818 /* clear auth data */
3819 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3821 /* get hash of the message */
3822 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3823 (unsigned char *) h, msg_len, NULL, NULL);
3825 result = memcmp (code, auth_data, auth_data_len);
3827 vec_free (auth_data);
3833 process_map_notify (map_records_arg_t * a)
3835 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3838 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3841 clib_warning ("No pending map-register entry with nonce %lu!",
3847 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
3848 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3850 /* reset map-notify counter */
3851 lcm->expired_map_registers = 0;
3855 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3859 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3862 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3866 return pool_elt_at_index (lcm->mapping_pool, mi);
3870 * When map-notify is received it is necessary that all EIDs in the record
3871 * list share common key. The key is then used to verify authentication
3872 * data in map-notify message.
3875 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3876 u32 key_id, u8 ** key_out)
3878 u32 i, len = vec_len (maps);
3881 /* get key of the first mapping */
3882 m = get_mapping (lcm, &maps[0].eid);
3886 key_out[0] = m->key;
3888 for (i = 1; i < len; i++)
3890 m = get_mapping (lcm, &maps[i].eid);
3894 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3896 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3904 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3906 locator_t *locators = 0;
3912 memset (&m, 0, sizeof (m));
3914 /* parse record eid */
3915 for (i = 0; i < count; i++)
3918 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3921 clib_warning ("Failed to parse mapping record!");
3922 vec_foreach (loc, locators) locator_free (loc);
3923 vec_free (locators);
3927 m.locators = locators;
3928 gid_address_copy (&m.eid, &deid);
3929 vec_add1 (a->mappings, m);
3935 static map_records_arg_t *
3936 map_record_args_get ()
3938 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3939 map_records_arg_t *rec;
3943 pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
3945 map_records_arg_free (rec);
3949 pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
3953 static map_records_arg_t *
3954 parse_map_notify (vlib_buffer_t * b)
3957 map_notify_hdr_t *mnotif_hdr;
3958 lisp_key_type_t key_id;
3959 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3962 u16 auth_data_len = 0;
3964 map_records_arg_t *a;
3966 a = map_record_args_get ();
3967 memset (a, 0, sizeof (*a));
3968 mnotif_hdr = vlib_buffer_get_current (b);
3969 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3970 memset (&deid, 0, sizeof (deid));
3972 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3973 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3974 auth_data_len = auth_data_len_by_key_id (key_id);
3976 /* advance buffer by authentication data */
3977 vlib_buffer_pull (b, auth_data_len);
3979 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3980 rc = parse_map_records (b, a, record_count);
3983 map_records_arg_free (a);
3987 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3990 map_records_arg_free (a);
3994 /* verify authentication data */
3995 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
3996 - (u8 *) mnotif_hdr, key_id, key))
3998 clib_warning ("Map-notify auth data verification failed for nonce "
3999 "0x%lx!", a->nonce);
4000 map_records_arg_free (a);
4006 static vlib_buffer_t *
4007 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
4008 ip_address_t * dst, u64 nonce, u8 probe_bit,
4009 mapping_t * records, u16 dst_port, u32 * bi_res)
4013 vlib_main_t *vm = lcm->vlib_main;
4015 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
4017 clib_warning ("Can't allocate buffer for Map-Register!");
4021 b = vlib_get_buffer (vm, bi);
4023 /* leave some space for the encap headers */
4024 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
4026 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
4028 /* push outer ip header */
4029 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
4036 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
4037 u8 probe_bit, u64 nonce, u16 dst_port,
4038 ip_address_t * probed_loc)
4044 u32 next_index, *to_next;
4045 mapping_t *records = 0, *m;
4047 m = pool_elt_at_index (lcm->mapping_pool, mi);
4051 vec_add1 (records, m[0]);
4052 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
4053 memset (&src, 0, sizeof (src));
4055 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
4057 clib_warning ("can't find inteface address for %U", format_ip_address,
4062 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
4066 free_map_register_records (records);
4068 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
4069 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
4070 ip4_lookup_node.index : ip6_lookup_node.index;
4072 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
4074 /* Enqueue the packet */
4075 to_next = vlib_frame_vector_args (f);
4078 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
4083 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
4085 const i32 start = vnet_buffer (b)->l3_hdr_offset;
4086 if (start < 0 && start < -sizeof (b->pre_data))
4092 *ip_hdr = b->data + start;
4093 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
4098 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
4099 lisp_cp_main_t * lcm, vlib_buffer_t * b)
4102 ip_address_t *dst_loc = 0, probed_loc, src_loc;
4104 map_request_hdr_t *mreq_hdr;
4105 gid_address_t src, dst;
4107 u32 i, len = 0, rloc_probe_recv = 0;
4108 gid_address_t *itr_rlocs = 0;
4110 mreq_hdr = vlib_buffer_get_current (b);
4111 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
4114 ("Only SMR Map-Requests and RLOC probe supported for now!");
4118 vlib_buffer_pull (b, sizeof (*mreq_hdr));
4119 nonce = MREQ_NONCE (mreq_hdr);
4122 len = lisp_msg_parse_addr (b, &src);
4126 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
4127 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
4131 /* parse eid records and send SMR-invoked map-requests */
4132 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
4134 memset (&dst, 0, sizeof (dst));
4135 len = lisp_msg_parse_eid_rec (b, &dst);
4138 clib_warning ("Can't parse map-request EID-record");
4142 if (MREQ_SMR (mreq_hdr))
4144 /* send SMR-invoked map-requests */
4145 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
4147 else if (MREQ_RLOC_PROBE (mreq_hdr))
4149 find_ip_header (b, &ip_hdr);
4152 clib_warning ("Cannot find the IP header!");
4156 memset (&m, 0, sizeof (m));
4157 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
4159 // TODO: select best locator; for now use the first one
4160 dst_loc = &gid_address_ip (&itr_rlocs[0]);
4162 /* get src/dst IP addresses */
4163 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
4165 // TODO get source port from buffer
4166 u16 src_port = LISP_CONTROL_PORT;
4168 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
4169 src_port, &probed_loc);
4174 vlib_node_increment_counter (vm, node->node_index,
4175 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
4177 vec_free (itr_rlocs);
4181 parse_map_reply (vlib_buffer_t * b)
4188 map_reply_hdr_t *mrep_hdr;
4189 map_records_arg_t *a;
4191 a = map_record_args_get ();
4192 memset (a, 0, sizeof (*a));
4194 locator_t *locators;
4196 mrep_hdr = vlib_buffer_get_current (b);
4197 a->nonce = MREP_NONCE (mrep_hdr);
4198 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
4199 if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
4204 vlib_buffer_pull (b, sizeof (*mrep_hdr));
4206 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
4208 memset (&m, 0, sizeof (m));
4210 h = vlib_buffer_get_current (b);
4212 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
4213 m.action = MAP_REC_ACTION (h);
4214 m.authoritative = MAP_REC_AUTH (h);
4216 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
4219 clib_warning ("Failed to parse mapping record!");
4220 map_records_arg_free (a);
4224 m.locators = locators;
4225 gid_address_copy (&m.eid, &deid);
4226 vec_add1 (a->mappings, m);
4232 queue_map_reply_for_processing (map_records_arg_t * a)
4234 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
4238 queue_map_notify_for_processing (map_records_arg_t * a)
4240 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
4244 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
4245 vlib_frame_t * from_frame)
4247 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
4248 map_notifies_recv = 0;
4249 lisp_msg_type_e type;
4250 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4251 map_records_arg_t *a;
4253 from = vlib_frame_vector_args (from_frame);
4254 n_left_from = from_frame->n_vectors;
4257 while (n_left_from > 0)
4259 u32 n_left_to_next_drop;
4261 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4262 to_next_drop, n_left_to_next_drop);
4263 while (n_left_from > 0 && n_left_to_next_drop > 0)
4271 to_next_drop[0] = bi0;
4273 n_left_to_next_drop -= 1;
4275 b0 = vlib_get_buffer (vm, bi0);
4277 type = lisp_msg_type (vlib_buffer_get_current (b0));
4280 case LISP_MAP_REPLY:
4281 a = parse_map_reply (b0);
4284 if (a->is_rloc_probe)
4285 rloc_probe_rep_recv++;
4286 queue_map_reply_for_processing (a);
4289 case LISP_MAP_REQUEST:
4290 process_map_request (vm, node, lcm, b0);
4292 case LISP_MAP_NOTIFY:
4293 a = parse_map_notify (b0);
4296 map_notifies_recv++;
4297 queue_map_notify_for_processing (a);
4301 clib_warning ("Unsupported LISP message type %d", type);
4305 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
4307 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
4313 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4314 n_left_to_next_drop);
4316 vlib_node_increment_counter (vm, node->node_index,
4317 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
4318 rloc_probe_rep_recv);
4319 vlib_node_increment_counter (vm, node->node_index,
4320 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
4322 return from_frame->n_vectors;
4326 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
4327 .function = lisp_cp_input,
4328 .name = "lisp-cp-input",
4329 .vector_size = sizeof (u32),
4330 .format_trace = format_lisp_cp_input_trace,
4331 .type = VLIB_NODE_TYPE_INTERNAL,
4333 .n_errors = LISP_CP_INPUT_N_ERROR,
4334 .error_strings = lisp_cp_input_error_strings,
4336 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
4339 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
4345 lisp_cp_init (vlib_main_t * vm)
4347 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4348 clib_error_t *error = 0;
4349 vlib_thread_main_t *vtm = vlib_get_thread_main ();
4352 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
4355 lcm->im4 = &ip4_main;
4356 lcm->im6 = &ip6_main;
4357 lcm->vlib_main = vm;
4358 lcm->vnet_main = vnet_get_main ();
4359 lcm->mreq_itr_rlocs = ~0;
4362 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
4363 memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
4365 gid_dictionary_init (&lcm->mapping_index_by_gid);
4366 lcm->do_map_resolver_election = 1;
4367 lcm->do_map_server_election = 1;
4368 lcm->map_request_mode = MR_MODE_DST_ONLY;
4370 num_threads = 1 /* main thread */ + vtm->n_threads;
4371 vec_validate (lcm->map_records_args_pool, num_threads - 1);
4373 /* default vrf mapped to vni 0 */
4374 hash_set (lcm->table_id_by_vni, 0, 0);
4375 hash_set (lcm->vni_by_table_id, 0, 0);
4377 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
4378 lisp_cp_input_node.index, 1 /* is_ip4 */ );
4379 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
4380 lisp_cp_input_node.index, 0 /* is_ip4 */ );
4382 u64 now = clib_cpu_time_now ();
4383 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
4384 lcm->nsh_map_index = ~0;
4385 lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
4386 lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
4387 lcm->expired_map_registers = 0;
4388 lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
4393 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
4394 lisp_api_stats_t * stat, lisp_stats_key_t * key,
4398 vlib_combined_counter_main_t *cm = &lgm->counters;
4399 lisp_gpe_fwd_entry_key_t fwd_key;
4400 const lisp_gpe_tunnel_t *lgt;
4403 memset (stat, 0, sizeof (*stat));
4404 memset (&fwd_key, 0, sizeof (fwd_key));
4406 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
4409 gid_to_dp_address (&fe->reid, &stat->deid);
4410 gid_to_dp_address (&fe->leid, &stat->seid);
4411 stat->vni = gid_address_vni (&fe->reid);
4413 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
4414 stat->loc_rloc = lgt->key->lcl;
4415 stat->rmt_rloc = lgt->key->rmt;
4417 vlib_get_combined_counter (cm, stats_index, &v);
4423 vnet_lisp_get_stats (void)
4425 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
4426 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4427 lisp_api_stats_t *stats = 0, stat;
4428 lisp_stats_key_t *key;
4432 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
4434 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
4435 vec_add1 (stats, stat);
4443 send_map_request_thread_fn (void *arg)
4445 map_request_args_t *a = arg;
4446 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4449 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4451 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4457 queue_map_request (gid_address_t * seid, gid_address_t * deid,
4458 u8 smr_invoked, u8 is_resend)
4460 map_request_args_t a;
4462 a.is_resend = is_resend;
4463 gid_address_copy (&a.seid, seid);
4464 gid_address_copy (&a.deid, deid);
4465 a.smr_invoked = smr_invoked;
4467 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
4468 (u8 *) & a, sizeof (a));
4473 * Take an action with a pending map request depending on expiration time
4474 * and re-try counters.
4477 update_pending_request (pending_map_request_t * r, f64 dt)
4479 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4482 if (r->time_to_expire - dt < 0)
4483 /* it's time to decide what to do with this pending request */
4485 if (r->retries_num >= NUMBER_OF_RETRIES)
4486 /* too many retries -> assume current map resolver is not available */
4488 mr = get_map_resolver (&lcm->active_map_resolver);
4491 clib_warning ("Map resolver %U not found - probably deleted "
4492 "by the user recently.", format_ip_address,
4493 &lcm->active_map_resolver);
4497 clib_warning ("map resolver %U is unreachable, ignoring",
4498 format_ip_address, &lcm->active_map_resolver);
4500 /* mark current map resolver unavailable so it won't be
4501 * selected next time */
4503 mr->last_update = vlib_time_now (lcm->vlib_main);
4506 reset_pending_mr_counters (r);
4507 elect_map_resolver (lcm);
4509 /* try to find a next eligible map resolver and re-send */
4510 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4516 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4519 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
4523 r->time_to_expire -= dt;
4527 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
4530 pending_map_request_t *pmr;
4531 u32 *to_be_removed = 0, *pmr_index;
4534 pool_foreach (pmr, lcm->pending_map_requests_pool,
4536 if (pmr->to_be_removed)
4538 clib_fifo_foreach (nonce, pmr->nonces, ({
4539 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
4542 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
4547 vec_foreach (pmr_index, to_be_removed)
4548 pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
4550 vec_free (to_be_removed);
4554 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
4556 static f64 time_left = RLOC_PROBING_INTERVAL;
4558 if (!lcm->is_enabled || !lcm->rloc_probing)
4564 time_left = RLOC_PROBING_INTERVAL;
4565 send_rloc_probes (lcm);
4570 update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
4572 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4576 r->time_to_expire -= dt;
4578 if (r->time_to_expire < 0)
4580 lcm->expired_map_registers++;
4582 if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
4584 ms = get_map_server (&lcm->active_map_server);
4587 clib_warning ("Map server %U not found - probably deleted "
4588 "by the user recently.", format_ip_address,
4589 &lcm->active_map_server);
4593 clib_warning ("map server %U is unreachable, ignoring",
4594 format_ip_address, &lcm->active_map_server);
4596 /* mark current map server unavailable so it won't be
4597 * elected next time */
4599 ms->last_update = vlib_time_now (lcm->vlib_main);
4602 elect_map_server (lcm);
4604 /* indication for deleting all pending map registers */
4606 lcm->expired_map_registers = 0;
4611 /* delete pending map register */
4619 update_map_register (lisp_cp_main_t * lcm, f64 dt)
4621 u32 *to_be_removed = 0, *pmr_index;
4622 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
4623 static u64 mreg_sent_counter = 0;
4625 pending_map_register_t *pmr;
4628 if (!lcm->is_enabled || !lcm->map_registering)
4632 pool_foreach (pmr, lcm->pending_map_registers_pool,
4634 if (!update_pending_map_register (pmr, dt, &del_all))
4638 vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
4645 /* delete all pending map register messages so they won't
4646 * trigger another map server election.. */
4647 pool_free (lcm->pending_map_registers_pool);
4648 hash_free (lcm->map_register_messages_by_nonce);
4650 /* ..and trigger registration against next map server (if any) */
4655 vec_foreach (pmr_index, to_be_removed)
4656 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4659 vec_free (to_be_removed);
4664 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
4665 time_left = MAP_REGISTER_INTERVAL;
4668 mreg_sent_counter++;
4669 time_left = QUICK_MAP_REGISTER_INTERVAL;
4671 send_map_register (lcm, 1 /* want map notify */ );
4676 send_map_resolver_service (vlib_main_t * vm,
4677 vlib_node_runtime_t * rt, vlib_frame_t * f)
4681 pending_map_request_t *pmr;
4682 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4686 vlib_process_wait_for_event_or_clock (vm, period);
4688 /* currently no signals are expected - just wait for clock */
4689 (void) vlib_process_get_events (vm, 0);
4692 pool_foreach (pmr, lcm->pending_map_requests_pool,
4694 if (!pmr->to_be_removed)
4695 update_pending_request (pmr, period);
4699 remove_dead_pending_map_requests (lcm);
4701 update_map_register (lcm, period);
4702 update_rloc_probing (lcm, period);
4704 u64 now = clib_cpu_time_now ();
4706 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
4707 if (vec_len (expired) > 0)
4710 vec_foreach (mi, expired)
4712 process_expired_mapping (lcm, mi[0]);
4714 _vec_len (expired) = 0;
4723 vnet_lisp_stats_enable_disable (u8 enable)
4725 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4727 if (vnet_lisp_enable_disable_status () == 0)
4728 return VNET_API_ERROR_LISP_DISABLED;
4731 lcm->flags |= LISP_FLAG_STATS_ENABLED;
4733 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
4739 vnet_lisp_stats_enable_disable_state (void)
4741 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4743 if (vnet_lisp_enable_disable_status () == 0)
4744 return VNET_API_ERROR_LISP_DISABLED;
4746 return lcm->flags & LISP_FLAG_STATS_ENABLED;
4750 VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
4751 .function = send_map_resolver_service,
4752 .type = VLIB_NODE_TYPE_PROCESS,
4753 .name = "lisp-retry-service",
4754 .process_log2_n_stack_bytes = 16,
4759 vnet_lisp_set_transport_protocol (u8 protocol)
4761 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4763 if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
4764 protocol > LISP_TRANSPORT_PROTOCOL_API)
4765 return VNET_API_ERROR_INVALID_ARGUMENT;
4767 lcm->transport_protocol = protocol;
4771 lisp_transport_protocol_t
4772 vnet_lisp_get_transport_protocol (void)
4774 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4775 return lcm->transport_protocol;
4778 VLIB_INIT_FUNCTION (lisp_cp_init);
4781 * fd.io coding-style-patch-verification: ON
4784 * eval: (c-set-style "gnu")