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 <vnet/crypto/crypto.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 queue_map_request (gid_address_t * seid, gid_address_t * deid,
81 u8 smr_invoked, u8 is_resend);
83 ip_interface_address_t *
84 ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
85 u32 sw_if_index, u8 loop)
87 vnet_main_t *vnm = vnet_get_main ();
88 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
89 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
90 sw_if_index = swif->unnumbered_sw_if_index;
92 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
93 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
95 return pool_elt_at_index ((lm)->if_address_pool, ia);
99 ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
102 ip_interface_address_t *ia;
104 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
107 return ip_interface_address_get_address (lm, ia);
111 ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
112 u8 version, ip_address_t * result)
114 ip_lookup_main_t *lm;
117 lm = (version == AF_IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
118 addr = ip_interface_get_first_address (lm, sw_if_index, version);
122 ip_address_set (result, addr, version);
127 * convert from a LISP address to a FIB prefix
130 ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
132 if (addr->version == AF_IP4)
135 prefix->fp_proto = FIB_PROTOCOL_IP4;
136 clib_memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
137 memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
141 prefix->fp_len = 128;
142 prefix->fp_proto = FIB_PROTOCOL_IP6;
143 memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
148 * convert from a LISP to a FIB prefix
151 ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
152 fib_prefix_t * fib_prefix)
154 ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
155 fib_prefix->fp_len = ip_prefix->len;
159 * Find the sw_if_index of the interface that would be used to egress towards
163 ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
165 fib_node_index_t fei;
168 ip_address_to_fib_prefix (dst, &prefix);
170 fei = fib_table_lookup (0, &prefix);
172 return (fib_entry_get_resolving_interface (fei));
176 * Find first IP of the interface that would be used to egress towards dst.
177 * Returns 1 if the address is found 0 otherwise.
180 ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
181 ip_address_t * result)
184 ip_lookup_main_t *lm;
188 ASSERT (result != 0);
190 ipver = ip_addr_version (dst);
192 lm = (ipver == AF_IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
193 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
198 /* find the first ip address */
199 addr = ip_interface_get_first_address (lm, si, ipver);
203 ip_address_set (result, addr, ipver);
208 dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add,
209 u8 with_default_route)
215 dp_table = hash_get (lcm->table_id_by_vni, vni);
219 clib_warning ("vni %d not associated to a vrf!", vni);
220 return VNET_API_ERROR_INVALID_VALUE;
225 dp_table = hash_get (lcm->bd_id_by_vni, vni);
228 clib_warning ("vni %d not associated to a bridge domain!", vni);
229 return VNET_API_ERROR_INVALID_VALUE;
233 /* enable/disable data-plane interface */
237 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
239 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0],
245 lisp_gpe_tenant_l2_iface_unlock (vni);
247 lisp_gpe_tenant_l3_iface_unlock (vni);
254 dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 dst_map_index)
256 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
259 clib_memset (a, 0, sizeof (*a));
261 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
265 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
267 /* delete dp fwd entry */
270 a->locator_pairs = fe->locator_pairs;
271 a->vni = gid_address_vni (&fe->reid);
272 gid_address_copy (&a->rmt_eid, &fe->reid);
274 gid_address_copy (&a->lcl_eid, &fe->leid);
276 vnet_lisp_gpe_del_fwd_counters (a, feip[0]);
277 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
279 /* delete entry in fwd table */
280 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
281 vec_free (fe->locator_pairs);
282 pool_put (lcm->fwd_entry_pool, fe);
286 * Finds first remote locator with best (lowest) priority that has a local
287 * peer locator with an underlying route to it.
291 get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
292 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
294 u32 i, limitp = 0, li, found = 0, esi;
295 locator_set_t *rmt_ls, *lcl_ls;
296 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
297 locator_t *lp, *rmt = 0;
302 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
304 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
306 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
313 /* find unvisited remote locator with best priority */
314 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
316 if (0 != hash_get (checked, i))
319 li = vec_elt (rmt_ls->locator_indices, i);
320 lp = pool_elt_at_index (lcm->locator_pool, li);
322 /* we don't support non-IP locators for now */
323 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
326 if ((found && lp->priority == limitp)
327 || (!found && lp->priority >= limitp))
331 /* don't search for locators with lower priority and don't
332 * check this locator again*/
333 limitp = lp->priority;
334 hash_set (checked, i, 1);
338 /* check if a local locator with a route to remote locator exists */
341 /* find egress sw_if_index for rmt locator */
343 ip_fib_get_egress_iface_for_dst (lcm,
344 &gid_address_ip (&rmt->address));
345 if ((u32) ~ 0 == esi)
348 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
350 li = vec_elt (lcl_ls->locator_indices, i);
351 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
353 /* found local locator with the needed sw_if_index */
354 if (sl->sw_if_index == esi)
356 /* and it has an address */
357 if (0 == ip_interface_get_first_ip_address (lcm,
359 gid_address_ip_version
364 clib_memset (&pair, 0, sizeof (pair));
365 ip_address_copy (&pair.rmt_loc,
366 &gid_address_ip (&rmt->address));
367 ip_address_copy (&pair.lcl_loc, lcl_addr);
368 pair.weight = rmt->weight;
369 pair.priority = rmt->priority;
370 vec_add1 (locator_pairs[0], pair);
384 gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
387 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
391 switch (fid_addr_type (fid))
393 case FID_ADDR_IP_PREF:
394 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
395 gid_address_ippref (dst) = fid_addr_ippref (fid);
398 gid_address_type (dst) = GID_ADDR_MAC;
399 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
402 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
408 vnet_lisp_map_register_state_get (void)
410 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
411 return lcm->map_registering;
415 vnet_lisp_rloc_probe_state_get (void)
417 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
418 return lcm->rloc_probing;
422 dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
424 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
425 gid_address_t *rmt_eid, *lcl_eid;
426 mapping_t *lcl_map, *rmt_map;
427 u32 sw_if_index, **rmts, rmts_idx;
428 uword *feip = 0, *dpid, *rmts_stored_idxp = 0;
430 u8 type, is_src_dst = 0;
433 clib_memset (a, 0, sizeof (*a));
435 /* remove entry if it already exists */
436 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
438 dp_del_fwd_entry (lcm, dst_map_index);
441 * Determine local mapping and eid
443 if (lcm->flags & LISP_FLAG_PITR_MODE)
445 if (lcm->pitr_map_index != ~0)
446 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
449 clib_warning ("no PITR mapping configured!");
454 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
455 lcl_eid = &lcl_map->eid;
458 * Determine remote mapping and eid
460 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
461 rmt_eid = &rmt_map->eid;
464 * Build and insert data plane forwarding entry
468 if (MR_MODE_SRC_DST == lcm->map_request_mode)
470 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
472 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
473 &gid_address_sd_dst (rmt_eid));
474 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
475 &gid_address_sd_src (rmt_eid));
479 gid_address_copy (&a->rmt_eid, rmt_eid);
480 gid_address_copy (&a->lcl_eid, lcl_eid);
485 gid_address_copy (&a->rmt_eid, rmt_eid);
487 a->vni = gid_address_vni (&a->rmt_eid);
488 a->is_src_dst = is_src_dst;
490 /* get vrf or bd_index associated to vni */
491 type = gid_address_type (&a->rmt_eid);
492 if (GID_ADDR_IP_PREFIX == type)
494 dpid = hash_get (lcm->table_id_by_vni, a->vni);
497 clib_warning ("vni %d not associated to a vrf!", a->vni);
500 a->table_id = dpid[0];
502 else if (GID_ADDR_MAC == type)
504 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
507 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
513 /* find best locator pair that 1) verifies LISP policy 2) are connected */
514 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
516 /* Either rmt mapping is negative or we can't find underlay path.
517 * Try again with petr if configured */
518 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
520 rmt_map = lisp_get_petr_mapping (lcm);
521 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
528 a->action = rmt_map->action;
531 rv = vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
534 if (a->locator_pairs)
535 vec_free (a->locator_pairs);
539 /* add tunnel to fwd entry table */
540 pool_get (lcm->fwd_entry_pool, fe);
541 vnet_lisp_gpe_add_fwd_counters (a, fe - lcm->fwd_entry_pool);
543 fe->locator_pairs = a->locator_pairs;
544 gid_address_copy (&fe->reid, &a->rmt_eid);
547 gid_address_copy (&fe->leid, &a->lcl_eid);
549 gid_address_copy (&fe->leid, lcl_eid);
551 fe->is_src_dst = is_src_dst;
552 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
553 fe - lcm->fwd_entry_pool);
555 /* Add rmt mapping to the vector of adjacent mappings to lcl mapping */
557 hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index);
558 if (!rmts_stored_idxp)
560 pool_get (lcm->lcl_to_rmt_adjacencies, rmts);
561 clib_memset (rmts, 0, sizeof (*rmts));
562 rmts_idx = rmts - lcm->lcl_to_rmt_adjacencies;
563 hash_set (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index, rmts_idx);
567 rmts_idx = (u32) (*rmts_stored_idxp);
568 rmts = pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idx);
570 vec_add1 (rmts[0], dst_map_index);
577 } fwd_entry_mt_arg_t;
580 dp_add_fwd_entry_thread_fn (void *arg)
582 fwd_entry_mt_arg_t *a = arg;
583 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
584 dp_add_fwd_entry (lcm, a->si, a->di);
589 dp_add_fwd_entry_from_mt (u32 si, u32 di)
591 fwd_entry_mt_arg_t a;
593 clib_memset (&a, 0, sizeof (a));
597 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
598 (u8 *) & a, sizeof (a));
603 * Returns vector of adjacencies.
605 * The caller must free the vector returned by this function.
607 * @param vni virtual network identifier
608 * @return vector of adjacencies
611 vnet_lisp_adjacencies_get_by_vni (u32 vni)
613 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
615 lisp_adjacency_t *adjs = 0, adj;
618 pool_foreach(fwd, lcm->fwd_entry_pool,
620 if (gid_address_vni (&fwd->reid) != vni)
623 gid_address_copy (&adj.reid, &fwd->reid);
624 gid_address_copy (&adj.leid, &fwd->leid);
625 vec_add1 (adjs, adj);
633 get_map_server (ip_address_t * a)
635 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
638 vec_foreach (m, lcm->map_servers)
640 if (!ip_address_cmp (&m->address, a))
649 get_map_resolver (ip_address_t * a)
651 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
654 vec_foreach (m, lcm->map_resolvers)
656 if (!ip_address_cmp (&m->address, a))
665 vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
668 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
669 lisp_msmr_t _ms, *ms = &_ms;
671 if (vnet_lisp_enable_disable_status () == 0)
673 clib_warning ("LISP is disabled!");
674 return VNET_API_ERROR_LISP_DISABLED;
679 if (get_map_server (addr))
681 clib_warning ("map-server %U already exists!", format_ip_address,
686 clib_memset (ms, 0, sizeof (*ms));
687 ip_address_copy (&ms->address, addr);
688 vec_add1 (lcm->map_servers, ms[0]);
690 if (vec_len (lcm->map_servers) == 1)
691 lcm->do_map_server_election = 1;
695 for (i = 0; i < vec_len (lcm->map_servers); i++)
697 ms = vec_elt_at_index (lcm->map_servers, i);
698 if (!ip_address_cmp (&ms->address, addr))
700 if (!ip_address_cmp (&ms->address, &lcm->active_map_server))
701 lcm->do_map_server_election = 1;
703 vec_del1 (lcm->map_servers, i);
713 * Add/remove mapping to/from map-cache. Overwriting not allowed.
716 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
717 u32 * map_index_result)
719 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
720 u32 mi, *map_indexp, map_index, i;
721 u32 **rmts = 0, *remote_idxp, rmts_itr, remote_idx;
723 mapping_t *m, *old_map;
726 if (gid_address_type (&a->eid) == GID_ADDR_NSH)
728 if (gid_address_vni (&a->eid) != 0)
730 clib_warning ("Supported only default VNI for NSH!");
731 return VNET_API_ERROR_INVALID_ARGUMENT;
733 if (gid_address_nsh_spi (&a->eid) > MAX_VALUE_U24)
735 clib_warning ("SPI is greater than 24bit!");
736 return VNET_API_ERROR_INVALID_ARGUMENT;
740 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
741 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
744 /* TODO check if overwriting and take appropriate actions */
745 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
747 clib_warning ("eid %U found in the eid-table", format_gid_address,
749 return VNET_API_ERROR_VALUE_EXIST;
752 pool_get (lcm->mapping_pool, m);
753 gid_address_copy (&m->eid, &a->eid);
754 m->locator_set_index = a->locator_set_index;
756 m->action = a->action;
758 m->is_static = a->is_static;
759 m->key = vec_dup (a->key);
760 m->key_id = a->key_id;
761 m->authoritative = a->authoritative;
763 map_index = m - lcm->mapping_pool;
764 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
767 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
769 clib_warning ("Locator set with index %d doesn't exist",
770 a->locator_set_index);
771 return VNET_API_ERROR_INVALID_VALUE;
774 /* add eid to list of eids supported by locator-set */
775 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
776 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
777 a->locator_set_index);
778 vec_add1 (eid_indexes[0], map_index);
783 vec_add1 (lcm->local_mappings_indexes, map_index);
785 map_index_result[0] = map_index;
789 if (mi == GID_LOOKUP_MISS)
791 clib_warning ("eid %U not found in the eid-table",
792 format_gid_address, &a->eid);
793 return VNET_API_ERROR_INVALID_VALUE;
796 /* clear locator-set to eids binding */
797 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
798 a->locator_set_index);
799 for (i = 0; i < vec_len (eid_indexes[0]); i++)
801 map_indexp = vec_elt_at_index (eid_indexes[0], i);
802 if (map_indexp[0] == mi)
805 vec_del1 (eid_indexes[0], i);
807 /* remove local mark if needed */
808 m = pool_elt_at_index (lcm->mapping_pool, mi);
811 /* Remove adjacencies associated with the local mapping */
812 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
816 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
817 vec_foreach (remote_idxp, rmts[0])
819 dp_del_fwd_entry (lcm, remote_idxp[0]);
822 pool_put (lcm->lcl_to_rmt_adjacencies, rmts);
823 hash_unset (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
827 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
829 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
830 if (lm_indexp[0] == mi)
833 vec_del1 (lcm->local_mappings_indexes, k);
837 /* Remove remote (if present) from the vectors of lcl-to-rmts
838 * TODO: Address this in a more efficient way.
841 pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies,
843 vec_foreach_index (rmts_itr, rmts[0])
845 remote_idx = vec_elt (rmts[0], rmts_itr);
846 if (mi == remote_idx)
848 vec_del1 (rmts[0], rmts_itr);
856 /* remove mapping from dictionary */
857 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
858 gid_address_free (&m->eid);
859 pool_put_index (lcm->mapping_pool, mi);
866 * Add/update/delete mapping to/in/from map-cache.
869 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
870 u32 * map_index_result)
876 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
878 if (vnet_lisp_enable_disable_status () == 0)
880 clib_warning ("LISP is disabled!");
881 return VNET_API_ERROR_LISP_DISABLED;
884 vni = gid_address_vni (&a->eid);
885 type = gid_address_type (&a->eid);
886 if (GID_ADDR_IP_PREFIX == type)
887 dp_table = hash_get (lcm->table_id_by_vni, vni);
888 else if (GID_ADDR_MAC == type)
889 dp_table = hash_get (lcm->bd_id_by_vni, vni);
891 if (!dp_table && GID_ADDR_NSH != type)
893 clib_warning ("vni %d not associated to a %s!", vni,
894 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
895 return VNET_API_ERROR_INVALID_VALUE;
898 /* store/remove mapping from map-cache */
899 return vnet_lisp_map_cache_add_del (a, map_index_result);
903 add_l2_arp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
906 u32 version = (u32) kvp->key[0];
907 if (AF_IP6 == version)
908 return (BIHASH_WALK_CONTINUE);
910 u32 bd = (u32) (kvp->key[0] >> 32);
911 hash_set (ht[0], bd, 0);
912 return (BIHASH_WALK_CONTINUE);
916 vnet_lisp_l2_arp_bds_get (void)
918 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
921 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
922 add_l2_arp_bd, &bds);
927 add_ndp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
930 u32 version = (u32) kvp->key[0];
931 if (AF_IP4 == version)
932 return (BIHASH_WALK_CONTINUE);
934 u32 bd = (u32) (kvp->key[0] >> 32);
935 hash_set (ht[0], bd, 0);
936 return (BIHASH_WALK_CONTINUE);
940 vnet_lisp_ndp_bds_get (void)
942 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
945 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
954 } lisp_add_l2_arp_ndp_args_t;
957 add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
959 lisp_add_l2_arp_ndp_args_t *a = arg;
960 lisp_api_l2_arp_entry_t **vector = a->vector, e;
962 u32 version = (u32) kvp->key[0];
963 if (AF_IP6 == version)
964 return (BIHASH_WALK_CONTINUE);
966 u32 bd = (u32) (kvp->key[0] >> 32);
970 mac_copy (e.mac, (void *) &kvp->value);
971 e.ip4 = (u32) kvp->key[1];
972 vec_add1 (vector[0], e);
974 return (BIHASH_WALK_CONTINUE);
977 lisp_api_l2_arp_entry_t *
978 vnet_lisp_l2_arp_entries_get_by_bd (u32 bd)
980 lisp_api_l2_arp_entry_t *entries = 0;
981 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
982 lisp_add_l2_arp_ndp_args_t a;
987 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
988 add_l2_arp_entry, &a);
993 add_ndp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
995 lisp_add_l2_arp_ndp_args_t *a = arg;
996 lisp_api_ndp_entry_t **vector = a->vector, e;
998 u32 version = (u32) kvp->key[0];
999 if (AF_IP4 == version)
1000 return (BIHASH_WALK_CONTINUE);
1002 u32 bd = (u32) (kvp->key[0] >> 32);
1006 mac_copy (e.mac, (void *) &kvp->value);
1007 clib_memcpy (e.ip6, &kvp->key[1], 16);
1008 vec_add1 (vector[0], e);
1010 return (BIHASH_WALK_CONTINUE);
1013 lisp_api_ndp_entry_t *
1014 vnet_lisp_ndp_entries_get_by_bd (u32 bd)
1016 lisp_api_ndp_entry_t *entries = 0;
1017 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1018 lisp_add_l2_arp_ndp_args_t a;
1020 a.vector = &entries;
1023 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
1029 vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac, u8 is_add)
1031 if (vnet_lisp_enable_disable_status () == 0)
1033 clib_warning ("LISP is disabled!");
1034 return VNET_API_ERROR_LISP_DISABLED;
1037 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1040 u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key);
1043 if (res != GID_LOOKUP_MISS_L2)
1045 clib_warning ("Entry %U exists in DB!", format_gid_address, key);
1046 return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
1048 u64 val = mac_to_u64 (mac);
1049 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val,
1054 if (res == GID_LOOKUP_MISS_L2)
1056 clib_warning ("ONE entry %U not found - cannot delete!",
1057 format_gid_address, key);
1060 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0,
1068 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
1070 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1071 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
1073 if (vnet_lisp_enable_disable_status () == 0)
1075 clib_warning ("LISP is disabled!");
1076 return VNET_API_ERROR_LISP_DISABLED;
1079 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
1080 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
1082 if (!is_l2 && (vni == 0 || dp_id == 0))
1084 clib_warning ("can't add/del default vni-vrf mapping!");
1088 dp_idp = hash_get (dp_table_by_vni[0], vni);
1089 vnip = hash_get (vni_by_dp_table[0], dp_id);
1095 clib_warning ("vni %d or vrf %d already used in vrf/vni "
1096 "mapping!", vni, dp_id);
1099 hash_set (dp_table_by_vni[0], vni, dp_id);
1100 hash_set (vni_by_dp_table[0], dp_id, vni);
1102 /* create dp iface */
1103 dp_add_del_iface (lcm, vni, is_l2, 1 /* is_add */ ,
1104 1 /* with_default_route */ );
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 /* is_add */ , 0 /* unused */ );
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 clib_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 clib_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 clib_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 locally 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 identifier
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 clib_memset (ls_args, 0, sizeof (ls_args[0]));
1386 clib_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 */
1502 if (lcm->flags & LISP_FLAG_PITR_MODE)
1504 if (lcm->pitr_map_index != ~0)
1506 local_mi = lcm->pitr_map_index;
1510 /* PITR mode is on, but no mapping is configured */
1516 if (gid_address_type (&a->reid) == GID_ADDR_NSH)
1518 if (lcm->nsh_map_index == ~0)
1519 local_mi = GID_LOOKUP_MISS;
1521 local_mi = lcm->nsh_map_index;
1525 local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1530 if (GID_LOOKUP_MISS == local_mi)
1532 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1533 format_gid_address, &a->leid);
1538 /* update forwarding */
1539 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1542 dp_del_fwd_entry (lcm, remote_mi);
1548 vnet_lisp_set_map_request_mode (u8 mode)
1550 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1552 if (vnet_lisp_enable_disable_status () == 0)
1554 clib_warning ("LISP is disabled!");
1555 return VNET_API_ERROR_LISP_DISABLED;
1558 if (mode >= _MR_MODE_MAX)
1560 clib_warning ("Invalid LISP map request mode %d!", mode);
1561 return VNET_API_ERROR_INVALID_ARGUMENT;
1564 lcm->map_request_mode = mode;
1569 vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
1571 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1572 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
1573 u32 locator_set_index = ~0;
1577 if (vnet_lisp_enable_disable_status () == 0)
1579 clib_warning ("LISP is disabled!");
1580 return VNET_API_ERROR_LISP_DISABLED;
1585 if (lcm->nsh_map_index == (u32) ~ 0)
1587 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1590 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1593 locator_set_index = p[0];
1595 pool_get (lcm->mapping_pool, m);
1596 clib_memset (m, 0, sizeof *m);
1597 m->locator_set_index = locator_set_index;
1600 lcm->nsh_map_index = m - lcm->mapping_pool;
1602 if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
1608 if (lcm->nsh_map_index != (u32) ~ 0)
1610 /* remove NSH mapping */
1611 pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
1612 lcm->nsh_map_index = ~0;
1613 vnet_lisp_gpe_del_nsh_iface (lgm);
1620 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1622 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1623 u32 locator_set_index = ~0;
1627 if (vnet_lisp_enable_disable_status () == 0)
1629 clib_warning ("LISP is disabled!");
1630 return VNET_API_ERROR_LISP_DISABLED;
1633 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1636 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1639 locator_set_index = p[0];
1643 pool_get (lcm->mapping_pool, m);
1644 m->locator_set_index = locator_set_index;
1647 lcm->pitr_map_index = m - lcm->mapping_pool;
1651 /* remove pitr mapping */
1652 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1653 lcm->pitr_map_index = ~0;
1659 vnet_lisp_map_register_fallback_threshold_set (u32 value)
1661 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1664 return VNET_API_ERROR_INVALID_ARGUMENT;
1667 lcm->max_expired_map_registers = value;
1672 vnet_lisp_map_register_fallback_threshold_get (void)
1674 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1675 return lcm->max_expired_map_registers;
1679 * Configure Proxy-ETR
1681 * @param ip PETR's IP address
1682 * @param is_add Flag that indicates if this is an addition or removal
1684 * return 0 on success
1687 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1689 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1692 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1695 if (vnet_lisp_enable_disable_status () == 0)
1697 clib_warning ("LISP is disabled!");
1698 return VNET_API_ERROR_LISP_DISABLED;
1701 clib_memset (ls_args, 0, sizeof (*ls_args));
1705 /* Create dummy petr locator-set */
1706 clib_memset (&loc, 0, sizeof (loc));
1707 gid_address_from_ip (&loc.address, ip);
1709 loc.state = loc.weight = 1;
1712 ls_args->is_add = 1;
1713 ls_args->index = ~0;
1714 vec_add1 (ls_args->locators, loc);
1715 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1717 /* Add petr mapping */
1718 pool_get (lcm->mapping_pool, m);
1719 m->locator_set_index = ls_index;
1720 lcm->petr_map_index = m - lcm->mapping_pool;
1722 /* Enable use-petr */
1723 lcm->flags |= LISP_FLAG_USE_PETR;
1727 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1729 /* Remove petr locator */
1730 ls_args->is_add = 0;
1731 ls_args->index = m->locator_set_index;
1732 vnet_lisp_add_del_locator_set (ls_args, 0);
1734 /* Remove petr mapping */
1735 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1737 /* Disable use-petr */
1738 lcm->flags &= ~LISP_FLAG_USE_PETR;
1739 lcm->petr_map_index = ~0;
1744 /* cleans locator to locator-set data and removes locators not part of
1745 * any locator-set */
1747 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1749 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1750 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1751 for (i = 0; i < vec_len (ls->locator_indices); i++)
1753 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1754 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1756 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1758 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1759 if (ls_indexp[0] == lsi)
1763 /* delete index for removed locator-set */
1764 vec_del1 (ls_indexes[0], j);
1766 /* delete locator if it's part of no locator-set */
1767 if (vec_len (ls_indexes[0]) == 0)
1769 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1770 vec_add1 (to_be_deleted, i);
1776 for (i = 0; i < vec_len (to_be_deleted); i++)
1778 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1779 vec_del1 (ls->locator_indices, loc_indexp[0]);
1781 vec_free (to_be_deleted);
1785 static inline uword *
1786 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1788 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1793 /* find locator-set */
1797 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1808 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1814 ASSERT (ls != NULL);
1815 ASSERT (loc != NULL);
1817 vec_foreach (locit, ls->locator_indices)
1819 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1820 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1821 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1823 clib_warning ("Duplicate locator");
1824 return VNET_API_ERROR_VALUE_EXIST;
1832 update_adjacencies_by_map_index (lisp_cp_main_t * lcm,
1833 u32 mapping_index, u8 remove_only)
1837 uword *fei = 0, *rmts_idxp = 0;
1838 u32 **rmts = 0, *remote_idxp = 0, *rmts_copy = 0;
1839 vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
1840 clib_memset (a, 0, sizeof (*a));
1842 map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
1846 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mapping_index);
1850 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
1851 rmts_copy = vec_dup (rmts[0]);
1853 vec_foreach (remote_idxp, rmts_copy)
1855 fei = hash_get (lcm->fwd_entry_by_mapping_index, remote_idxp[0]);
1859 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1861 gid_address_copy (&a->leid, &fwd->leid);
1862 gid_address_copy (&a->reid, &fwd->reid);
1863 vnet_lisp_add_del_adjacency (a);
1868 vnet_lisp_add_del_adjacency (a);
1871 vec_free (rmts_copy);
1876 fei = hash_get (lcm->fwd_entry_by_mapping_index, mapping_index);
1880 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1882 gid_address_copy (&a->leid, &fwd->leid);
1883 gid_address_copy (&a->reid, &fwd->reid);
1884 vnet_lisp_add_del_adjacency (a);
1889 vnet_lisp_add_del_adjacency (a);
1895 update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm,
1896 u32 ls_index, u8 remove_only)
1901 if (vec_len (lcm->locator_set_to_eids) <= ls_index)
1904 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
1906 for (i = 0; i < vec_len (eid_indexes[0]); i++)
1908 map_indexp = vec_elt_at_index (eid_indexes[0], i);
1909 update_adjacencies_by_map_index (lcm, map_indexp[0], remove_only);
1914 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1915 u32 ls_index, u32 loc_id)
1917 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1918 u32 **ls_indexes = NULL;
1920 ASSERT (ls != NULL);
1921 ASSERT (locit != NULL);
1923 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1924 pool_put_index (lcm->locator_pool, locit[0]);
1925 vec_del1 (ls->locator_indices, loc_id);
1926 vec_del1 (ls_indexes[0], ls_index);
1930 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1931 locator_set_t * ls, u32 * ls_result)
1933 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1934 locator_t *loc = NULL, *itloc = NULL;
1935 uword _p = (u32) ~ 0, *p = &_p;
1936 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1942 if (vnet_lisp_enable_disable_status () == 0)
1944 clib_warning ("LISP is disabled!");
1945 return VNET_API_ERROR_LISP_DISABLED;
1948 p = get_locator_set_index (a, p);
1951 clib_warning ("locator-set %v doesn't exist", a->name);
1952 return VNET_API_ERROR_INVALID_ARGUMENT;
1957 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1960 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1962 return VNET_API_ERROR_INVALID_ARGUMENT;
1969 ls_result[0] = p[0];
1971 /* allocate locators */
1972 vec_foreach (itloc, a->locators)
1974 ret = is_locator_in_locator_set (lcm, ls, itloc);
1980 pool_get (lcm->locator_pool, loc);
1982 loc_index = loc - lcm->locator_pool;
1984 vec_add1 (ls->locator_indices, loc_index);
1986 vec_validate (lcm->locator_to_locator_sets, loc_index);
1987 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1989 vec_add1 (ls_indexes[0], p[0]);
1997 vec_foreach (itloc, a->locators)
2001 vec_foreach (locit, ls->locator_indices)
2003 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
2005 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
2008 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
2010 if (0 == loc->local &&
2011 !gid_address_cmp (&loc->address, &itloc->address))
2014 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
2019 /* update fwd entries using this locator in DP */
2020 update_fwd_entries_by_locator_set (lcm, ls_index,
2021 vec_len (ls->locator_indices)
2034 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
2037 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2039 uword _p = (u32) ~ 0, *p = &_p;
2044 if (vnet_lisp_enable_disable_status () == 0)
2046 clib_warning ("LISP is disabled!");
2047 return VNET_API_ERROR_LISP_DISABLED;
2052 p = get_locator_set_index (a, p);
2055 if (p && p[0] != (u32) ~ 0)
2057 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2060 clib_warning ("locator-set %d to be overwritten doesn't exist!",
2065 /* clean locator to locator-set vectors and remove locators if
2066 * they're not part of another locator-set */
2067 clean_locator_to_locator_set (lcm, p[0]);
2069 /* remove locator indices from locator set */
2070 vec_free (ls->locator_indices);
2075 ls_result[0] = p[0];
2077 /* new locator-set */
2080 pool_get (lcm->locator_set_pool, ls);
2081 clib_memset (ls, 0, sizeof (*ls));
2082 ls_index = ls - lcm->locator_set_pool;
2086 ls->name = vec_dup (a->name);
2088 if (!lcm->locator_set_index_by_name)
2089 lcm->locator_set_index_by_name = hash_create_vec (
2097 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
2100 /* mark as local locator-set */
2101 vec_add1 (lcm->local_locator_set_indexes, ls_index);
2103 ls->local = a->local;
2105 ls_result[0] = ls_index;
2108 ret = vnet_lisp_add_del_locator (a, ls, NULL);
2116 p = get_locator_set_index (a, p);
2119 clib_warning ("locator-set %v doesn't exists", a->name);
2123 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2126 clib_warning ("locator-set with index %d doesn't exists", p[0]);
2130 if (lcm->mreq_itr_rlocs == p[0])
2132 clib_warning ("Can't delete the locator-set used to constrain "
2133 "the itr-rlocs in map-requests!");
2137 if (vec_len (lcm->locator_set_to_eids) != 0)
2139 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
2140 if (vec_len (eid_indexes[0]) != 0)
2143 ("Can't delete a locator that supports a mapping!");
2148 /* clean locator to locator-sets data */
2149 clean_locator_to_locator_set (lcm, p[0]);
2155 vec_foreach_index (it, lcm->local_locator_set_indexes)
2157 lsi = vec_elt (lcm->local_locator_set_indexes, it);
2160 vec_del1 (lcm->local_locator_set_indexes, it);
2164 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
2166 vec_free (ls->name);
2167 vec_free (ls->locator_indices);
2168 pool_put (lcm->locator_set_pool, ls);
2174 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
2176 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2178 lcm->rloc_probing = is_enable;
2183 vnet_lisp_map_register_enable_disable (u8 is_enable)
2185 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2187 lcm->map_registering = is_enable;
2192 lisp_cp_register_dst_port (vlib_main_t * vm)
2194 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
2195 lisp_cp_input_node.index, 1 /* is_ip4 */ );
2196 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
2197 lisp_cp_input_node.index, 0 /* is_ip4 */ );
2201 lisp_cp_unregister_dst_port (vlib_main_t * vm)
2203 udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp, 0 /* is_ip4 */ );
2204 udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp6, 1 /* is_ip4 */ );
2208 * lisp_cp_enable_l2_l3_ifaces
2210 * Enable all l2 and l3 ifaces
2213 lisp_cp_enable_l2_l3_ifaces (lisp_cp_main_t * lcm, u8 with_default_route)
2218 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
2219 dp_add_del_iface(lcm, vni, /* is_l2 */ 0, /* is_add */1,
2220 with_default_route);
2222 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
2223 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1,
2224 with_default_route);
2230 lisp_cp_disable_l2_l3_ifaces (lisp_cp_main_t * lcm)
2234 /* clear interface table */
2235 hash_free (lcm->fwd_entry_by_mapping_index);
2236 pool_free (lcm->fwd_entry_pool);
2237 /* Clear state tracking rmt-lcl fwd entries */
2239 pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
2244 hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
2245 pool_free (lcm->lcl_to_rmt_adjacencies);
2249 vnet_lisp_enable_disable (u8 is_enable)
2251 clib_error_t *error = 0;
2252 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2253 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
2255 a->is_en = is_enable;
2256 error = vnet_lisp_gpe_enable_disable (a);
2259 return clib_error_return (0, "failed to %s data-plane!",
2260 a->is_en ? "enable" : "disable");
2263 /* decide what to do based on mode */
2265 if (lcm->flags & LISP_FLAG_XTR_MODE)
2269 lisp_cp_register_dst_port (lcm->vlib_main);
2270 lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
2274 lisp_cp_unregister_dst_port (lcm->vlib_main);
2275 lisp_cp_disable_l2_l3_ifaces (lcm);
2279 if (lcm->flags & LISP_FLAG_PETR_MODE)
2281 /* if in xTR mode, the LISP ports were already (un)registered above */
2282 if (!(lcm->flags & LISP_FLAG_XTR_MODE))
2285 lisp_cp_register_dst_port (lcm->vlib_main);
2287 lisp_cp_unregister_dst_port (lcm->vlib_main);
2291 if (lcm->flags & LISP_FLAG_PITR_MODE)
2295 /* install interfaces, but no default routes */
2296 lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
2300 lisp_cp_disable_l2_l3_ifaces (lcm);
2305 vnet_lisp_create_retry_process (lcm);
2307 /* update global flag */
2308 lcm->is_enabled = is_enable;
2314 vnet_lisp_enable_disable_status (void)
2316 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2317 return lcm->is_enabled;
2321 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
2323 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2325 lisp_msmr_t _mr, *mr = &_mr;
2327 if (vnet_lisp_enable_disable_status () == 0)
2329 clib_warning ("LISP is disabled!");
2330 return VNET_API_ERROR_LISP_DISABLED;
2336 if (get_map_resolver (&a->address))
2338 clib_warning ("map-resolver %U already exists!", format_ip_address,
2343 clib_memset (mr, 0, sizeof (*mr));
2344 ip_address_copy (&mr->address, &a->address);
2345 vec_add1 (lcm->map_resolvers, *mr);
2347 if (vec_len (lcm->map_resolvers) == 1)
2348 lcm->do_map_resolver_election = 1;
2352 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
2354 mr = vec_elt_at_index (lcm->map_resolvers, i);
2355 if (!ip_address_cmp (&mr->address, &a->address))
2357 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
2358 lcm->do_map_resolver_election = 1;
2360 vec_del1 (lcm->map_resolvers, i);
2369 vnet_lisp_map_register_set_ttl (u32 ttl)
2371 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2372 lcm->map_register_ttl = ttl;
2377 vnet_lisp_map_register_get_ttl (void)
2379 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2380 return lcm->map_register_ttl;
2384 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
2386 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2389 if (vnet_lisp_enable_disable_status () == 0)
2391 clib_warning ("LISP is disabled!");
2392 return VNET_API_ERROR_LISP_DISABLED;
2397 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
2400 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
2401 return VNET_API_ERROR_INVALID_ARGUMENT;
2404 lcm->mreq_itr_rlocs = p[0];
2408 lcm->mreq_itr_rlocs = ~0;
2414 /* Statistics (not really errors) */
2415 #define foreach_lisp_cp_lookup_error \
2417 _(MAP_REQUESTS_SENT, "map-request sent") \
2418 _(ARP_REPLY_TX, "ARP replies sent") \
2419 _(NDP_NEIGHBOR_ADVERTISEMENT_TX, \
2420 "neighbor advertisement sent")
2422 static char *lisp_cp_lookup_error_strings[] = {
2423 #define _(sym,string) string,
2424 foreach_lisp_cp_lookup_error
2430 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
2431 foreach_lisp_cp_lookup_error
2433 LISP_CP_LOOKUP_N_ERROR,
2434 } lisp_cp_lookup_error_t;
2438 LISP_CP_LOOKUP_NEXT_DROP,
2439 LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
2440 LISP_CP_LOOKUP_N_NEXT,
2441 } lisp_cp_lookup_next_t;
2445 gid_address_t dst_eid;
2446 ip_address_t map_resolver_ip;
2447 } lisp_cp_lookup_trace_t;
2450 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
2452 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2453 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2454 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
2456 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
2457 format_ip_address, &t->map_resolver_ip, format_gid_address,
2463 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
2464 ip_address_t * sloc)
2469 if (vec_len (lcm->map_resolvers) == 0)
2471 clib_warning ("No map-resolver configured");
2475 /* find the first mr ip we have a route to and the ip of the
2476 * iface that has a route to it */
2477 vec_foreach (mrit, lcm->map_resolvers)
2480 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
2482 ip_address_copy (mr_ip, a);
2484 /* also update globals */
2489 clib_warning ("Can't find map-resolver and local interface ip!");
2493 static gid_address_t *
2494 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
2500 ip_interface_address_t *ia = 0;
2501 gid_address_t gid_data, *gid = &gid_data;
2502 gid_address_t *rlocs = 0;
2503 ip_prefix_t *ippref = &gid_address_ippref (gid);
2504 ip_address_t *rloc = &ip_prefix_addr (ippref);
2506 clib_memset (gid, 0, sizeof (gid[0]));
2507 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
2508 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
2510 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
2511 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
2513 /* Add ipv4 locators first TODO sort them */
2516 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2517 loc->sw_if_index, 1 /* unnumbered */,
2519 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
2520 ip_address_set (rloc, addr, AF_IP4);
2521 ip_prefix_len (ippref) = 32;
2522 ip_prefix_normalize (ippref);
2523 vec_add1 (rlocs, gid[0]);
2526 /* Add ipv6 locators */
2527 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2528 loc->sw_if_index, 1 /* unnumbered */,
2530 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
2531 ip_address_set (rloc, addr, AF_IP6);
2532 ip_prefix_len (ippref) = 128;
2533 ip_prefix_normalize (ippref);
2534 vec_add1 (rlocs, gid[0]);
2542 static vlib_buffer_t *
2543 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
2544 ip_address_t * sloc, ip_address_t * rloc,
2545 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
2549 vlib_main_t *vm = lcm->vlib_main;
2551 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2553 clib_warning ("Can't allocate buffer for Map-Request!");
2557 b = vlib_get_buffer (vm, bi);
2559 /* leave some space for the encap headers */
2560 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2563 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2564 1 /* rloc probe */ , nonce_res);
2566 /* push outer ip header */
2567 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2575 static vlib_buffer_t *
2576 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2577 gid_address_t * seid, gid_address_t * deid,
2578 locator_set_t * loc_set, ip_address_t * mr_ip,
2579 ip_address_t * sloc, u8 is_smr_invoked,
2580 u64 * nonce_res, u32 * bi_res)
2584 gid_address_t *rlocs = 0;
2585 vlib_main_t *vm = lcm->vlib_main;
2587 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2589 clib_warning ("Can't allocate buffer for Map-Request!");
2593 b = vlib_get_buffer (vm, bi);
2596 /* leave some space for the encap headers */
2597 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2600 rlocs = build_itr_rloc_list (lcm, loc_set);
2602 if (MR_MODE_SRC_DST == lcm->map_request_mode
2603 && GID_ADDR_SRC_DST != gid_address_type (deid))
2606 clib_memset (&sd, 0, sizeof (sd));
2607 build_src_dst (&sd, seid, deid);
2608 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2609 0 /* rloc probe */ , nonce_res);
2614 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2615 0 /* rloc probe */ , nonce_res);
2618 /* push ecm: udp-ip-lisp */
2619 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2621 /* push outer ip header */
2622 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2632 reset_pending_mr_counters (pending_map_request_t * r)
2634 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2638 #define foreach_msmr \
2644 elect_map_ ## name (lisp_cp_main_t * lcm) \
2647 vec_foreach (mr, lcm->map_ ## name ## s) \
2651 ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
2652 lcm->do_map_ ## name ## _election = 0; \
2661 free_map_register_records (mapping_t * maps)
2664 vec_foreach (map, maps) vec_free (map->locators);
2670 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2671 ip_address_t * probed_loc)
2674 locator_t *loc, new;
2675 ip_interface_address_t *ia = 0;
2677 ip_address_t *new_ip = &gid_address_ip (&new.address);
2680 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2682 vec_foreach (li, ls->locator_indices)
2684 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2689 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2690 loc->sw_if_index, 1 /* unnumbered */,
2692 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2694 ip_address_set (new_ip, addr, AF_IP4);
2697 /* Add ipv6 locators */
2698 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2699 loc->sw_if_index, 1 /* unnumbered */,
2701 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2703 ip_address_set (new_ip, addr, AF_IP6);
2707 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2710 vec_add1 (m->locators, new);
2715 build_map_register_record_list (lisp_cp_main_t * lcm)
2717 mapping_t *recs = 0, rec, *m;
2720 pool_foreach(m, lcm->mapping_pool,
2722 /* for now build only local mappings */
2727 add_locators (lcm, &rec, m->locator_set_index, NULL);
2728 vec_add1 (recs, rec);
2735 static vnet_crypto_alg_t
2736 lisp_key_type_to_crypto_alg (lisp_key_type_t key_id)
2741 return VNET_CRYPTO_ALG_HMAC_SHA1;
2742 case HMAC_SHA_256_128:
2743 return VNET_CRYPTO_ALG_HMAC_SHA256;
2745 clib_warning ("unsupported encryption key type: %d!", key_id);
2748 return VNET_CRYPTO_ALG_NONE;
2751 static vnet_crypto_op_id_t
2752 lisp_key_type_to_crypto_op (lisp_key_type_t key_id)
2757 return VNET_CRYPTO_OP_SHA1_HMAC;
2758 case HMAC_SHA_256_128:
2759 return VNET_CRYPTO_OP_SHA256_HMAC;
2761 clib_warning ("unsupported encryption key type: %d!", key_id);
2764 return VNET_CRYPTO_OP_NONE;
2768 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2769 lisp_key_type_t key_id, u8 * key,
2770 u16 auth_data_len, u32 msg_len)
2772 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2773 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2774 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2775 vnet_crypto_op_t _op, *op = &_op;
2776 vnet_crypto_key_index_t ki;
2778 vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id));
2780 op->digest = MREG_DATA (map_reg_hdr);
2781 op->src = (u8 *) map_reg_hdr;
2785 ki = vnet_crypto_key_add (lcm->vlib_main,
2786 lisp_key_type_to_crypto_alg (key_id), key,
2791 vnet_crypto_process_ops (lcm->vlib_main, op, 1);
2792 vnet_crypto_key_del (lcm->vlib_main, ki);
2797 static vlib_buffer_t *
2798 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2799 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2800 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2805 u32 bi, auth_data_len = 0, msg_len = 0;
2806 vlib_main_t *vm = lcm->vlib_main;
2808 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2810 clib_warning ("Can't allocate buffer for Map-Register!");
2814 b = vlib_get_buffer (vm, bi);
2816 /* leave some space for the encap headers */
2817 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2819 auth_data_len = auth_data_len_by_key_id (key_id);
2820 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2821 auth_data_len, nonce_res,
2824 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2827 /* push outer ip header */
2828 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2837 get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
2840 while (lcm->do_map_ ## name ## _election \
2841 | (0 == ip_fib_get_first_egress_ip_for_dst \
2842 (lcm, &lcm->active_map_ ##name, ip))) \
2844 if (0 == elect_map_ ## name (lcm)) \
2845 /* all map resolvers/servers are down */ \
2847 /* restart MR/MS checking by marking all of them up */ \
2848 vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
2857 /* CP output statistics */
2858 #define foreach_lisp_cp_output_error \
2859 _(MAP_REGISTERS_SENT, "map-registers sent") \
2860 _(MAP_REQUESTS_SENT, "map-requests sent") \
2861 _(RLOC_PROBES_SENT, "rloc-probes sent")
2862 static char *lisp_cp_output_error_strings[] = {
2863 #define _(sym,string) string,
2864 foreach_lisp_cp_output_error
2870 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2871 foreach_lisp_cp_output_error
2873 LISP_CP_OUTPUT_N_ERROR,
2874 } lisp_cp_output_error_t;
2877 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2878 vlib_frame_t * from_frame)
2883 /* dummy node used only for statistics */
2885 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2886 .function = lisp_cp_output,
2887 .name = "lisp-cp-output",
2888 .vector_size = sizeof (u32),
2889 .format_trace = format_lisp_cp_input_trace,
2890 .type = VLIB_NODE_TYPE_INTERNAL,
2892 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2893 .error_strings = lisp_cp_output_error_strings,
2895 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2898 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2904 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2905 u32 local_locator_set_index, ip_address_t * sloc,
2906 ip_address_t * rloc)
2913 u32 next_index, *to_next;
2914 gid_address_t *itr_rlocs;
2916 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2917 itr_rlocs = build_itr_rloc_list (lcm, ls);
2919 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2920 vec_free (itr_rlocs);
2924 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2926 next_index = (ip_addr_version (rloc) == AF_IP4) ?
2927 ip4_lookup_node.index : ip6_lookup_node.index;
2929 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2931 /* Enqueue the packet */
2932 to_next = vlib_frame_vector_args (f);
2935 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2941 send_rloc_probes (lisp_cp_main_t * lcm)
2947 u32 si, rloc_probes_sent = 0;
2950 pool_foreach (e, lcm->fwd_entry_pool,
2952 if (vec_len (e->locator_pairs) == 0)
2955 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2958 clib_warning ("internal error: cannot find local eid %U in "
2959 "map-cache!", format_gid_address, &e->leid);
2962 lm = pool_elt_at_index (lcm->mapping_pool, si);
2964 /* get the best (lowest) priority */
2965 lprio = e->locator_pairs[0].priority;
2967 /* send rloc-probe for pair(s) with the best remote locator priority */
2968 vec_foreach (lp, e->locator_pairs)
2970 if (lp->priority != lprio)
2973 /* get first remote locator */
2974 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2981 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2982 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2988 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2990 pending_map_register_t *pmr;
2991 u32 bi, map_registers_sent = 0;
2996 u32 next_index, *to_next;
2997 mapping_t *records, *r, *group, *k;
2999 if (get_egress_map_server_ip (lcm, &sloc) < 0)
3002 records = build_map_register_record_list (lcm);
3006 vec_foreach (r, records)
3009 u8 key_id = r->key_id;
3012 continue; /* no secret key -> map-register cannot be sent */
3015 vec_add1 (group, r[0]);
3017 /* group mappings that share common key */
3018 for (k = r + 1; k < vec_end (records); k++)
3020 if (k->key_id != r->key_id)
3023 if (vec_is_equal (k->key, r->key))
3025 vec_add1 (group, k[0]);
3026 k->key = 0; /* don't process this mapping again */
3030 b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
3031 want_map_notif, group, key_id, key, &bi);
3036 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3038 next_index = (ip_addr_version (&lcm->active_map_server) == AF_IP4) ?
3039 ip4_lookup_node.index : ip6_lookup_node.index;
3041 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3043 /* Enqueue the packet */
3044 to_next = vlib_frame_vector_args (f);
3047 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3048 map_registers_sent++;
3050 pool_get (lcm->pending_map_registers_pool, pmr);
3051 clib_memset (pmr, 0, sizeof (*pmr));
3052 pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
3053 hash_set (lcm->map_register_messages_by_nonce, nonce,
3054 pmr - lcm->pending_map_registers_pool);
3056 free_map_register_records (records);
3058 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3059 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
3060 map_registers_sent);
3065 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
3066 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
3068 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
3069 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
3072 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
3073 gid_address_t * seid, gid_address_t * deid,
3074 u8 is_smr_invoked, u8 is_resend)
3076 u32 next_index, bi = 0, *to_next, map_index;
3080 locator_set_t *loc_set;
3082 pending_map_request_t *pmr, *duplicate_pmr = 0;
3086 /* if there is already a pending request remember it */
3089 pool_foreach(pmr, lcm->pending_map_requests_pool,
3091 if (!gid_address_cmp (&pmr->src, seid)
3092 && !gid_address_cmp (&pmr->dst, deid))
3094 duplicate_pmr = pmr;
3100 if (!is_resend && duplicate_pmr)
3102 /* don't send the request if there is a pending map request already */
3106 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
3108 /* get locator-set for seid */
3109 if (!pitr_mode && gid_address_type (deid) != GID_ADDR_NSH)
3111 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
3112 if (map_index == ~0)
3114 clib_warning ("No local mapping found in eid-table for %U!",
3115 format_gid_address, seid);
3119 map = pool_elt_at_index (lcm->mapping_pool, map_index);
3124 ("Mapping found for src eid %U is not marked as local!",
3125 format_gid_address, seid);
3128 ls_index = map->locator_set_index;
3134 if (lcm->pitr_map_index != ~0)
3137 pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
3138 ls_index = map->locator_set_index;
3147 if (lcm->nsh_map_index == (u32) ~ 0)
3149 clib_warning ("No locator-set defined for NSH!");
3154 map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
3155 ls_index = map->locator_set_index;
3160 /* overwrite locator set if map-request itr-rlocs configured */
3161 if (~0 != lcm->mreq_itr_rlocs)
3163 ls_index = lcm->mreq_itr_rlocs;
3166 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
3168 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
3171 duplicate_pmr->to_be_removed = 1;
3175 /* build the encapsulated map request */
3176 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
3177 &lcm->active_map_resolver,
3178 &sloc, is_smr_invoked, &nonce, &bi);
3183 /* set fib index to default and lookup node */
3184 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3185 next_index = (ip_addr_version (&lcm->active_map_resolver) == AF_IP4) ?
3186 ip4_lookup_node.index : ip6_lookup_node.index;
3188 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3190 /* Enqueue the packet */
3191 to_next = vlib_frame_vector_args (f);
3194 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3196 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3197 LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1);
3200 /* if there is a pending request already update it */
3202 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
3204 /* remove the oldest nonce */
3205 u64 CLIB_UNUSED (tmp), *nonce_del;
3206 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
3207 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
3208 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
3211 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
3212 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3213 duplicate_pmr - lcm->pending_map_requests_pool);
3217 /* add map-request to pending requests table */
3218 pool_get (lcm->pending_map_requests_pool, pmr);
3219 clib_memset (pmr, 0, sizeof (*pmr));
3220 gid_address_copy (&pmr->src, seid);
3221 gid_address_copy (&pmr->dst, deid);
3222 clib_fifo_add1 (pmr->nonces, nonce);
3223 pmr->is_smr_invoked = is_smr_invoked;
3224 reset_pending_mr_counters (pmr);
3225 hash_set (lcm->pending_map_requests_by_nonce, nonce,
3226 pmr - lcm->pending_map_requests_pool);
3233 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
3235 ip4_header_t *ip4 = hdr;
3238 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
3240 ip_address_set (src, &ip4->src_address, AF_IP4);
3241 ip_address_set (dst, &ip4->dst_address, AF_IP4);
3246 ip_address_set (src, &ip6->src_address, AF_IP6);
3247 ip_address_set (dst, &ip6->dst_address, AF_IP6);
3252 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3256 u32 vni = ~0, table_id = ~0;
3258 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
3266 vnip = hash_get (lcm->vni_by_table_id, table_id);
3270 clib_warning ("vrf %d is not mapped to any vni!", table_id);
3276 lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
3280 l2input_main_t *l2im = &l2input_main;
3281 l2_input_config_t *config;
3282 l2_bridge_domain_t *bd_config;
3284 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
3285 config = vec_elt_at_index (l2im->configs, sw_if_index0);
3286 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
3288 return bd_config->bd_id;
3292 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
3296 u32 bd = lisp_get_bd_from_buffer_eth (b);
3298 vnip = hash_get (lcm->vni_by_bd_id, bd);
3302 clib_warning ("bridge domain %d is not mapped to any vni!", bd);
3308 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
3309 gid_address_t * src, gid_address_t * dst,
3312 ethernet_header_t *eh;
3314 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3316 clib_memset (src, 0, sizeof (*src));
3317 clib_memset (dst, 0, sizeof (*dst));
3319 gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
3320 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3322 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
3325 u8 version, preflen;
3327 gid_address_type (src) = GID_ADDR_IP_PREFIX;
3328 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
3330 ip = vlib_buffer_get_current (b);
3331 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
3333 version = gid_address_ip_version (src);
3334 preflen = ip_address_max_len (version);
3335 gid_address_ippref_len (src) = preflen;
3336 gid_address_ippref_len (dst) = preflen;
3338 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
3339 gid_address_vni (dst) = vni;
3340 gid_address_vni (src) = vni;
3342 else if (LISP_AFI_MAC == type)
3344 ethernet_arp_header_t *ah;
3346 eh = vlib_buffer_get_current (b);
3348 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
3350 ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
3351 gid_address_type (dst) = GID_ADDR_ARP;
3353 if (clib_net_to_host_u16 (ah->opcode)
3354 != ETHERNET_ARP_OPCODE_request)
3356 clib_memset (&gid_address_arp_ndp_ip (dst), 0,
3357 sizeof (ip_address_t));
3358 ip_addr_version (&gid_address_arp_ndp_ip (dst)) = AF_IP4;
3359 gid_address_arp_ndp_bd (dst) = ~0;
3363 gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
3364 clib_memcpy (&gid_address_arp_ip4 (dst),
3365 &ah->ip4_over_ethernet[1].ip4, 4);
3369 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
3372 ip = (ip6_header_t *) (eh + 1);
3374 if (IP_PROTOCOL_ICMP6 == ip->protocol)
3376 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3377 ndh = ip6_next_header (ip);
3378 if (ndh->icmp.type == ICMP6_neighbor_solicitation)
3380 gid_address_type (dst) = GID_ADDR_NDP;
3382 /* check that source link layer address option is present */
3383 opt = (void *) (ndh + 1);
3384 if ((opt->header.type !=
3385 ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
3386 || (opt->header.n_data_u64s != 1))
3388 clib_memset (&gid_address_arp_ndp_ip (dst), 0,
3389 sizeof (ip_address_t));
3390 ip_addr_version (&gid_address_arp_ndp_ip (dst)) =
3392 gid_address_arp_ndp_bd (dst) = ~0;
3393 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3397 gid_address_ndp_bd (dst) =
3398 lisp_get_bd_from_buffer_eth (b);
3399 ip_address_set (&gid_address_arp_ndp_ip (dst),
3400 &ndh->target_address, AF_IP6);
3406 gid_address_type (src) = GID_ADDR_MAC;
3407 gid_address_type (dst) = GID_ADDR_MAC;
3408 mac_copy (&gid_address_mac (src), eh->src_address);
3409 mac_copy (&gid_address_mac (dst), eh->dst_address);
3412 vni = lisp_get_vni_from_buffer_eth (lcm, b);
3414 gid_address_vni (dst) = vni;
3415 gid_address_vni (src) = vni;
3418 else if (LISP_AFI_LCAF == type)
3421 eh = vlib_buffer_get_current (b);
3423 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
3425 nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
3426 u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
3427 u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
3428 gid_address_nsh_spi (dst) = spi;
3429 gid_address_nsh_si (dst) = si;
3431 gid_address_type (dst) = GID_ADDR_NSH;
3432 gid_address_type (src) = GID_ADDR_NSH;
3438 lisp_cp_lookup_inline (vlib_main_t * vm,
3439 vlib_node_runtime_t * node,
3440 vlib_frame_t * from_frame, int overlay)
3442 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
3443 u32 *from, *to_next, di, si;
3444 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3446 uword n_left_from, n_left_to_next;
3447 vnet_main_t *vnm = vnet_get_main ();
3449 from = vlib_frame_vector_args (from_frame);
3450 n_left_from = from_frame->n_vectors;
3451 next_index = node->cached_next_index;
3453 while (n_left_from > 0)
3455 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
3457 while (n_left_from > 0 && n_left_to_next > 0)
3459 u32 pi0, sw_if_index0, next0;
3462 gid_address_t src, dst;
3463 ethernet_arp_header_t *arp0;
3464 ethernet_header_t *eth0;
3465 vnet_hw_interface_t *hw_if0;
3466 ethernet_header_t *eh0;
3467 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3475 n_left_to_next -= 1;
3477 b0 = vlib_get_buffer (vm, pi0);
3479 /* src/dst eid pair */
3480 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
3482 if (gid_address_type (&dst) == GID_ADDR_ARP)
3484 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3485 if (GID_LOOKUP_MISS_L2 == mac0)
3488 /* send ARP reply */
3489 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3490 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3492 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3494 eth0 = vlib_buffer_get_current (b0);
3495 arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
3497 arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
3498 arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
3499 mac_address_from_u64 (&arp0->ip4_over_ethernet[0].mac, mac0);
3500 clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
3501 &gid_address_arp_ip4 (&dst), 4);
3503 /* Hardware must be ethernet-like. */
3504 ASSERT (vec_len (hw_if0->hw_address) == 6);
3506 clib_memcpy (eth0->dst_address, eth0->src_address, 6);
3507 clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
3509 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
3510 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3513 else if (gid_address_type (&dst) == GID_ADDR_NDP)
3515 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3516 if (GID_LOOKUP_MISS_L2 == mac0)
3519 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3520 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3522 eh0 = vlib_buffer_get_current (b0);
3523 ip0 = (ip6_header_t *) (eh0 + 1);
3524 ndh = ip6_next_header (ip0);
3526 ip0->dst_address = ip0->src_address;
3527 ip0->src_address = ndh->target_address;
3528 ip0->hop_limit = 255;
3529 opt = (void *) (ndh + 1);
3531 ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
3532 clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
3533 ndh->icmp.type = ICMP6_neighbor_advertisement;
3534 ndh->advertisement_flags = clib_host_to_net_u32
3535 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
3536 ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
3537 ndh->icmp.checksum = 0;
3538 ndh->icmp.checksum =
3539 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
3541 clib_memcpy (eh0->dst_address, eh0->src_address, 6);
3542 clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
3545 [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
3546 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3550 /* if we have remote mapping for destination already in map-cache
3551 add forwarding tunnel directly. If not send a map-request */
3552 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
3556 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
3557 /* send a map-request also in case of negative mapping entry
3558 with corresponding action */
3559 if (m->action == LISP_SEND_MAP_REQUEST)
3561 /* send map-request */
3562 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3563 0 /* is_resend */ );
3567 if (GID_ADDR_NSH != gid_address_type (&dst))
3569 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
3573 si = lcm->nsh_map_index;
3577 dp_add_fwd_entry_from_mt (si, di);
3583 /* send map-request */
3584 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3585 0 /* is_resend */ );
3589 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
3590 next0 = LISP_CP_LOOKUP_NEXT_DROP;
3592 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3594 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
3597 clib_memset (tr, 0, sizeof (*tr));
3598 gid_address_copy (&tr->dst_eid, &dst);
3599 ip_address_copy (&tr->map_resolver_ip,
3600 &lcm->active_map_resolver);
3602 gid_address_free (&dst);
3603 gid_address_free (&src);
3604 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3606 n_left_to_next, pi0, next0);
3609 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
3611 return from_frame->n_vectors;
3615 lisp_cp_lookup_ip4 (vlib_main_t * vm,
3616 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3618 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
3622 lisp_cp_lookup_ip6 (vlib_main_t * vm,
3623 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3625 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
3629 lisp_cp_lookup_l2 (vlib_main_t * vm,
3630 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3632 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
3636 lisp_cp_lookup_nsh (vlib_main_t * vm,
3637 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3639 /* TODO decide if NSH should be propagated as LCAF or not */
3640 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
3644 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
3645 .function = lisp_cp_lookup_ip4,
3646 .name = "lisp-cp-lookup-ip4",
3647 .vector_size = sizeof (u32),
3648 .format_trace = format_lisp_cp_lookup_trace,
3649 .type = VLIB_NODE_TYPE_INTERNAL,
3651 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3652 .error_strings = lisp_cp_lookup_error_strings,
3654 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3657 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3658 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3664 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
3665 .function = lisp_cp_lookup_ip6,
3666 .name = "lisp-cp-lookup-ip6",
3667 .vector_size = sizeof (u32),
3668 .format_trace = format_lisp_cp_lookup_trace,
3669 .type = VLIB_NODE_TYPE_INTERNAL,
3671 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3672 .error_strings = lisp_cp_lookup_error_strings,
3674 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3677 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3678 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3684 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
3685 .function = lisp_cp_lookup_l2,
3686 .name = "lisp-cp-lookup-l2",
3687 .vector_size = sizeof (u32),
3688 .format_trace = format_lisp_cp_lookup_trace,
3689 .type = VLIB_NODE_TYPE_INTERNAL,
3691 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3692 .error_strings = lisp_cp_lookup_error_strings,
3694 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3697 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3698 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3704 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
3705 .function = lisp_cp_lookup_nsh,
3706 .name = "lisp-cp-lookup-nsh",
3707 .vector_size = sizeof (u32),
3708 .format_trace = format_lisp_cp_lookup_trace,
3709 .type = VLIB_NODE_TYPE_INTERNAL,
3711 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3712 .error_strings = lisp_cp_lookup_error_strings,
3714 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3717 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
3718 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
3723 /* lisp_cp_input statistics */
3724 #define foreach_lisp_cp_input_error \
3726 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
3727 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
3728 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
3729 _(MAP_REPLIES_RECEIVED, "map-replies received")
3731 static char *lisp_cp_input_error_strings[] = {
3732 #define _(sym,string) string,
3733 foreach_lisp_cp_input_error
3739 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
3740 foreach_lisp_cp_input_error
3742 LISP_CP_INPUT_N_ERROR,
3743 } lisp_cp_input_error_t;
3747 gid_address_t dst_eid;
3748 ip4_address_t map_resolver_ip;
3749 } lisp_cp_input_trace_t;
3752 format_lisp_cp_input_trace (u8 * s, va_list * args)
3754 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
3755 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
3756 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
3757 va_arg (*args, lisp_cp_input_trace_t *);
3759 s = format (s, "LISP-CP-INPUT: TODO");
3764 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3767 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3768 clib_memset (adj_args, 0, sizeof (adj_args[0]));
3770 m = pool_elt_at_index (lcm->mapping_pool, mi);
3772 gid_address_copy (&adj_args->reid, &m->eid);
3773 adj_args->is_add = 0;
3774 if (vnet_lisp_add_del_adjacency (adj_args))
3775 clib_warning ("failed to del adjacency!");
3777 vnet_lisp_del_mapping (&m->eid, NULL);
3778 mapping_delete_timer (lcm, mi);
3782 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
3783 f64 expiration_time)
3786 u64 now = clib_cpu_time_now ();
3787 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
3788 u64 exp_clock_time = now + expiration_time * cpu_cps;
3790 m = pool_elt_at_index (lcm->mapping_pool, mi);
3793 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
3797 process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3800 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
3801 mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
3807 if (m->delete_after_expiration)
3809 remove_expired_mapping (lcm, mi);
3813 fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
3817 fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
3819 clib_memset (a, 0, sizeof (*a));
3820 a->rmt_eid = fe->reid;
3822 a->lcl_eid = fe->leid;
3823 a->vni = gid_address_vni (&fe->reid);
3825 rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
3829 if (m->almost_expired)
3831 m->almost_expired = 0; /* reset flag */
3834 if (m->packets != c.packets)
3836 /* mapping is in use, re-fetch */
3837 map_request_args_t mr_args;
3838 clib_memset (&mr_args, 0, sizeof (mr_args));
3839 mr_args.seid = fe->leid;
3840 mr_args.deid = fe->reid;
3842 send_map_request_thread_fn (&mr_args);
3845 remove_expired_mapping (lcm, mi);
3848 remove_expired_mapping (lcm, mi);
3852 m->almost_expired = 1;
3853 mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
3857 m->packets = c.packets;
3859 m->delete_after_expiration = 1;
3864 map_records_arg_free (map_records_arg_t * a)
3866 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3868 vec_foreach (m, a->mappings)
3870 vec_free (m->locators);
3871 gid_address_free (&m->eid);
3873 pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
3877 process_map_reply (map_records_arg_t * a)
3880 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3881 u32 dst_map_index = 0;
3882 pending_map_request_t *pmr;
3887 if (a->is_rloc_probe)
3890 /* Check pending requests table and nonce */
3891 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3894 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3897 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3899 vec_foreach (m, a->mappings)
3901 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
3902 clib_memset (m_args, 0, sizeof (m_args[0]));
3903 gid_address_copy (&m_args->eid, &m->eid);
3904 m_args->action = m->action;
3905 m_args->authoritative = m->authoritative;
3906 m_args->ttl = m->ttl;
3907 m_args->is_static = 0;
3909 /* insert/update mappings cache */
3910 vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
3912 if (dst_map_index == (u32) ~ 0)
3917 /* try to program forwarding only if mapping saved or updated */
3918 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3919 clib_memset (adj_args, 0, sizeof (adj_args[0]));
3921 gid_address_copy (&adj_args->leid, &pmr->src);
3922 gid_address_copy (&adj_args->reid, &m->eid);
3923 adj_args->is_add = 1;
3925 if (vnet_lisp_add_del_adjacency (adj_args))
3926 clib_warning ("failed to add adjacency!");
3929 if ((u32) ~ 0 != m->ttl)
3930 mapping_start_expiration_timer (lcm, dst_map_index,
3931 (m->ttl == 0) ? 0 : MAPPING_TIMEOUT);
3934 /* remove pending map request entry */
3937 clib_fifo_foreach (noncep, pmr->nonces, ({
3938 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3942 clib_fifo_free (pmr->nonces);
3943 pool_put (lcm->pending_map_requests_pool, pmr);
3951 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3952 lisp_key_type_t key_id, u8 * key)
3954 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3958 vnet_crypto_op_t _op, *op = &_op;
3959 vnet_crypto_key_index_t ki;
3960 u8 out[EVP_MAX_MD_SIZE] = { 0, };
3962 auth_data_len = auth_data_len_by_key_id (key_id);
3963 if ((u16) ~ 0 == auth_data_len)
3965 clib_warning ("invalid length for key_id %d!", key_id);
3969 /* save auth data */
3970 vec_validate (auth_data, auth_data_len - 1);
3971 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3973 /* clear auth data */
3974 clib_memset (MNOTIFY_DATA (h), 0, auth_data_len);
3976 vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id));
3983 ki = vnet_crypto_key_add (lcm->vlib_main,
3984 lisp_key_type_to_crypto_alg (key_id), key,
3989 vnet_crypto_process_ops (lcm->vlib_main, op, 1);
3990 vnet_crypto_key_del (lcm->vlib_main, ki);
3992 result = memcmp (out, auth_data, auth_data_len);
3994 vec_free (auth_data);
4000 process_map_notify (map_records_arg_t * a)
4002 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4005 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
4008 clib_warning ("No pending map-register entry with nonce %lu!",
4014 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4015 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
4017 /* reset map-notify counter */
4018 lcm->expired_map_registers = 0;
4022 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
4026 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
4029 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
4033 return pool_elt_at_index (lcm->mapping_pool, mi);
4037 * When map-notify is received it is necessary that all EIDs in the record
4038 * list share common key. The key is then used to verify authentication
4039 * data in map-notify message.
4042 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
4043 u32 key_id, u8 ** key_out)
4045 u32 i, len = vec_len (maps);
4048 /* get key of the first mapping */
4049 m = get_mapping (lcm, &maps[0].eid);
4053 key_out[0] = m->key;
4055 for (i = 1; i < len; i++)
4057 m = get_mapping (lcm, &maps[i].eid);
4061 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
4063 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
4071 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
4073 locator_t *locators = 0;
4079 clib_memset (&m, 0, sizeof (m));
4081 /* parse record eid */
4082 for (i = 0; i < count; i++)
4085 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
4088 clib_warning ("Failed to parse mapping record!");
4089 vec_foreach (loc, locators) locator_free (loc);
4090 vec_free (locators);
4094 m.locators = locators;
4095 gid_address_copy (&m.eid, &deid);
4096 vec_add1 (a->mappings, m);
4102 static map_records_arg_t *
4103 map_record_args_get ()
4105 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4106 map_records_arg_t *rec;
4110 pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
4112 map_records_arg_free (rec);
4116 pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
4120 static map_records_arg_t *
4121 parse_map_notify (vlib_buffer_t * b)
4124 map_notify_hdr_t *mnotif_hdr;
4125 lisp_key_type_t key_id;
4126 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4129 u16 auth_data_len = 0;
4131 map_records_arg_t *a;
4133 a = map_record_args_get ();
4134 clib_memset (a, 0, sizeof (*a));
4135 mnotif_hdr = vlib_buffer_get_current (b);
4136 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
4137 clib_memset (&deid, 0, sizeof (deid));
4139 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
4140 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
4141 auth_data_len = auth_data_len_by_key_id (key_id);
4143 /* advance buffer by authentication data */
4144 vlib_buffer_pull (b, auth_data_len);
4146 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
4147 rc = parse_map_records (b, a, record_count);
4150 map_records_arg_free (a);
4154 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
4157 map_records_arg_free (a);
4161 /* verify authentication data */
4162 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
4163 - (u8 *) mnotif_hdr, key_id, key))
4165 clib_warning ("Map-notify auth data verification failed for nonce "
4166 "0x%lx!", a->nonce);
4167 map_records_arg_free (a);
4173 static vlib_buffer_t *
4174 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
4175 ip_address_t * dst, u64 nonce, u8 probe_bit,
4176 mapping_t * records, u16 dst_port, u32 * bi_res)
4180 vlib_main_t *vm = lcm->vlib_main;
4182 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
4184 clib_warning ("Can't allocate buffer for Map-Register!");
4188 b = vlib_get_buffer (vm, bi);
4190 /* leave some space for the encap headers */
4191 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
4193 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
4195 /* push outer ip header */
4196 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
4203 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
4204 u8 probe_bit, u64 nonce, u16 dst_port,
4205 ip_address_t * probed_loc)
4211 u32 next_index, *to_next;
4212 mapping_t *records = 0, *m;
4214 m = pool_elt_at_index (lcm->mapping_pool, mi);
4218 vec_add1 (records, m[0]);
4219 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
4220 clib_memset (&src, 0, sizeof (src));
4222 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
4224 clib_warning ("can't find interface address for %U", format_ip_address,
4229 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
4233 free_map_register_records (records);
4235 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
4236 next_index = (ip_addr_version (&lcm->active_map_resolver) == AF_IP4) ?
4237 ip4_lookup_node.index : ip6_lookup_node.index;
4239 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
4241 /* Enqueue the packet */
4242 to_next = vlib_frame_vector_args (f);
4245 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
4250 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
4252 const i32 start = vnet_buffer (b)->l3_hdr_offset;
4253 if (start < 0 && start < -sizeof (b->pre_data))
4259 *ip_hdr = b->data + start;
4260 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
4265 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
4266 lisp_cp_main_t * lcm, vlib_buffer_t * b)
4269 ip_address_t *dst_loc = 0, probed_loc, src_loc;
4271 map_request_hdr_t *mreq_hdr;
4272 gid_address_t src, dst;
4274 u32 i, len = 0, rloc_probe_recv = 0;
4275 gid_address_t *itr_rlocs = 0;
4277 mreq_hdr = vlib_buffer_get_current (b);
4278 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
4281 ("Only SMR Map-Requests and RLOC probe supported for now!");
4285 vlib_buffer_pull (b, sizeof (*mreq_hdr));
4286 nonce = MREQ_NONCE (mreq_hdr);
4289 len = lisp_msg_parse_addr (b, &src);
4293 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
4294 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
4298 /* parse eid records and send SMR-invoked map-requests */
4299 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
4301 clib_memset (&dst, 0, sizeof (dst));
4302 len = lisp_msg_parse_eid_rec (b, &dst);
4305 clib_warning ("Can't parse map-request EID-record");
4309 if (MREQ_SMR (mreq_hdr))
4311 /* send SMR-invoked map-requests */
4312 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
4314 else if (MREQ_RLOC_PROBE (mreq_hdr))
4316 find_ip_header (b, &ip_hdr);
4319 clib_warning ("Cannot find the IP header!");
4323 clib_memset (&m, 0, sizeof (m));
4324 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
4326 // TODO: select best locator; for now use the first one
4327 dst_loc = &gid_address_ip (&itr_rlocs[0]);
4329 /* get src/dst IP addresses */
4330 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
4332 // TODO get source port from buffer
4333 u16 src_port = LISP_CONTROL_PORT;
4335 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
4336 src_port, &probed_loc);
4341 vlib_node_increment_counter (vm, node->node_index,
4342 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
4344 vec_free (itr_rlocs);
4348 parse_map_reply (vlib_buffer_t * b)
4355 map_reply_hdr_t *mrep_hdr;
4356 map_records_arg_t *a;
4358 a = map_record_args_get ();
4359 clib_memset (a, 0, sizeof (*a));
4361 locator_t *locators;
4363 mrep_hdr = vlib_buffer_get_current (b);
4364 a->nonce = MREP_NONCE (mrep_hdr);
4365 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
4366 if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
4368 map_records_arg_free (a);
4371 vlib_buffer_pull (b, sizeof (*mrep_hdr));
4373 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
4375 clib_memset (&m, 0, sizeof (m));
4377 h = vlib_buffer_get_current (b);
4379 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
4380 m.action = MAP_REC_ACTION (h);
4381 m.authoritative = MAP_REC_AUTH (h);
4383 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
4386 clib_warning ("Failed to parse mapping record!");
4387 map_records_arg_free (a);
4391 m.locators = locators;
4392 gid_address_copy (&m.eid, &deid);
4393 vec_add1 (a->mappings, m);
4399 queue_map_reply_for_processing (map_records_arg_t * a)
4401 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
4405 queue_map_notify_for_processing (map_records_arg_t * a)
4407 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
4411 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
4412 vlib_frame_t * from_frame)
4414 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
4415 map_notifies_recv = 0;
4416 lisp_msg_type_e type;
4417 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4418 map_records_arg_t *a;
4420 from = vlib_frame_vector_args (from_frame);
4421 n_left_from = from_frame->n_vectors;
4424 while (n_left_from > 0)
4426 u32 n_left_to_next_drop;
4428 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4429 to_next_drop, n_left_to_next_drop);
4430 while (n_left_from > 0 && n_left_to_next_drop > 0)
4438 to_next_drop[0] = bi0;
4440 n_left_to_next_drop -= 1;
4442 b0 = vlib_get_buffer (vm, bi0);
4444 type = lisp_msg_type (vlib_buffer_get_current (b0));
4447 case LISP_MAP_REPLY:
4448 a = parse_map_reply (b0);
4451 if (a->is_rloc_probe)
4452 rloc_probe_rep_recv++;
4453 queue_map_reply_for_processing (a);
4456 case LISP_MAP_REQUEST:
4457 process_map_request (vm, node, lcm, b0);
4459 case LISP_MAP_NOTIFY:
4460 a = parse_map_notify (b0);
4463 map_notifies_recv++;
4464 queue_map_notify_for_processing (a);
4468 clib_warning ("Unsupported LISP message type %d", type);
4472 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
4474 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
4480 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4481 n_left_to_next_drop);
4483 vlib_node_increment_counter (vm, node->node_index,
4484 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
4485 rloc_probe_rep_recv);
4486 vlib_node_increment_counter (vm, node->node_index,
4487 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
4489 return from_frame->n_vectors;
4493 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
4494 .function = lisp_cp_input,
4495 .name = "lisp-cp-input",
4496 .vector_size = sizeof (u32),
4497 .format_trace = format_lisp_cp_input_trace,
4498 .type = VLIB_NODE_TYPE_INTERNAL,
4500 .n_errors = LISP_CP_INPUT_N_ERROR,
4501 .error_strings = lisp_cp_input_error_strings,
4503 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
4506 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
4512 lisp_cp_init (vlib_main_t * vm)
4514 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4515 clib_error_t *error = 0;
4516 vlib_thread_main_t *vtm = vlib_get_thread_main ();
4519 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
4522 lcm->im4 = &ip4_main;
4523 lcm->im6 = &ip6_main;
4524 lcm->vlib_main = vm;
4525 lcm->vnet_main = vnet_get_main ();
4526 lcm->mreq_itr_rlocs = ~0;
4528 lcm->pitr_map_index = ~0;
4529 lcm->petr_map_index = ~0;
4530 clib_memset (&lcm->active_map_resolver, 0,
4531 sizeof (lcm->active_map_resolver));
4532 clib_memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
4534 gid_dictionary_init (&lcm->mapping_index_by_gid);
4535 lcm->do_map_resolver_election = 1;
4536 lcm->do_map_server_election = 1;
4537 lcm->map_request_mode = MR_MODE_DST_ONLY;
4539 num_threads = 1 /* main thread */ + vtm->n_threads;
4540 vec_validate (lcm->map_records_args_pool, num_threads - 1);
4542 /* default vrf mapped to vni 0 */
4543 hash_set (lcm->table_id_by_vni, 0, 0);
4544 hash_set (lcm->vni_by_table_id, 0, 0);
4546 u64 now = clib_cpu_time_now ();
4547 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
4548 lcm->nsh_map_index = ~0;
4549 lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
4550 lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
4551 lcm->expired_map_registers = 0;
4552 lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
4553 lcm->flags |= LISP_FLAG_XTR_MODE;
4558 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
4559 lisp_api_stats_t * stat, lisp_stats_key_t * key,
4563 vlib_combined_counter_main_t *cm = &lgm->counters;
4564 lisp_gpe_fwd_entry_key_t fwd_key;
4565 const lisp_gpe_tunnel_t *lgt;
4568 clib_memset (stat, 0, sizeof (*stat));
4569 clib_memset (&fwd_key, 0, sizeof (fwd_key));
4571 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
4574 gid_to_dp_address (&fe->reid, &stat->deid);
4575 gid_to_dp_address (&fe->leid, &stat->seid);
4576 stat->vni = gid_address_vni (&fe->reid);
4578 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
4579 stat->loc_rloc = lgt->key->lcl;
4580 stat->rmt_rloc = lgt->key->rmt;
4582 vlib_get_combined_counter (cm, stats_index, &v);
4588 vnet_lisp_get_stats (void)
4590 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
4591 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4592 lisp_api_stats_t *stats = 0, stat;
4593 lisp_stats_key_t *key;
4597 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
4599 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
4600 vec_add1 (stats, stat);
4608 send_map_request_thread_fn (void *arg)
4610 map_request_args_t *a = arg;
4611 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4614 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4616 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4622 queue_map_request (gid_address_t * seid, gid_address_t * deid,
4623 u8 smr_invoked, u8 is_resend)
4625 map_request_args_t a;
4627 a.is_resend = is_resend;
4628 gid_address_copy (&a.seid, seid);
4629 gid_address_copy (&a.deid, deid);
4630 a.smr_invoked = smr_invoked;
4632 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
4633 (u8 *) & a, sizeof (a));
4638 * Take an action with a pending map request depending on expiration time
4639 * and re-try counters.
4642 update_pending_request (pending_map_request_t * r, f64 dt)
4644 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4647 if (r->time_to_expire - dt < 0)
4648 /* it's time to decide what to do with this pending request */
4650 if (r->retries_num >= NUMBER_OF_RETRIES)
4651 /* too many retries -> assume current map resolver is not available */
4653 mr = get_map_resolver (&lcm->active_map_resolver);
4656 clib_warning ("Map resolver %U not found - probably deleted "
4657 "by the user recently.", format_ip_address,
4658 &lcm->active_map_resolver);
4662 clib_warning ("map resolver %U is unreachable, ignoring",
4663 format_ip_address, &lcm->active_map_resolver);
4665 /* mark current map resolver unavailable so it won't be
4666 * selected next time */
4668 mr->last_update = vlib_time_now (lcm->vlib_main);
4671 reset_pending_mr_counters (r);
4672 elect_map_resolver (lcm);
4674 /* try to find a next eligible map resolver and re-send */
4675 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4681 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4684 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
4688 r->time_to_expire -= dt;
4692 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
4695 pending_map_request_t *pmr;
4696 u32 *to_be_removed = 0, *pmr_index;
4699 pool_foreach (pmr, lcm->pending_map_requests_pool,
4701 if (pmr->to_be_removed)
4703 clib_fifo_foreach (nonce, pmr->nonces, ({
4704 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
4707 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
4712 vec_foreach (pmr_index, to_be_removed)
4713 pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
4715 vec_free (to_be_removed);
4719 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
4721 static f64 time_left = RLOC_PROBING_INTERVAL;
4723 if (!lcm->is_enabled || !lcm->rloc_probing)
4729 time_left = RLOC_PROBING_INTERVAL;
4730 send_rloc_probes (lcm);
4735 update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
4737 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4741 r->time_to_expire -= dt;
4743 if (r->time_to_expire < 0)
4745 lcm->expired_map_registers++;
4747 if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
4749 ms = get_map_server (&lcm->active_map_server);
4752 clib_warning ("Map server %U not found - probably deleted "
4753 "by the user recently.", format_ip_address,
4754 &lcm->active_map_server);
4758 clib_warning ("map server %U is unreachable, ignoring",
4759 format_ip_address, &lcm->active_map_server);
4761 /* mark current map server unavailable so it won't be
4762 * elected next time */
4764 ms->last_update = vlib_time_now (lcm->vlib_main);
4767 elect_map_server (lcm);
4769 /* indication for deleting all pending map registers */
4771 lcm->expired_map_registers = 0;
4776 /* delete pending map register */
4784 update_map_register (lisp_cp_main_t * lcm, f64 dt)
4786 u32 *to_be_removed = 0, *pmr_index;
4787 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
4788 static u64 mreg_sent_counter = 0;
4790 pending_map_register_t *pmr;
4793 if (!lcm->is_enabled || !lcm->map_registering)
4797 pool_foreach (pmr, lcm->pending_map_registers_pool,
4799 if (!update_pending_map_register (pmr, dt, &del_all))
4803 vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
4810 /* delete all pending map register messages so they won't
4811 * trigger another map server election.. */
4812 pool_free (lcm->pending_map_registers_pool);
4813 hash_free (lcm->map_register_messages_by_nonce);
4815 /* ..and trigger registration against next map server (if any) */
4820 vec_foreach (pmr_index, to_be_removed)
4821 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4824 vec_free (to_be_removed);
4829 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
4830 time_left = MAP_REGISTER_INTERVAL;
4833 mreg_sent_counter++;
4834 time_left = QUICK_MAP_REGISTER_INTERVAL;
4836 send_map_register (lcm, 1 /* want map notify */ );
4841 send_map_resolver_service (vlib_main_t * vm,
4842 vlib_node_runtime_t * rt, vlib_frame_t * f)
4846 pending_map_request_t *pmr;
4847 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4851 vlib_process_wait_for_event_or_clock (vm, period);
4853 /* currently no signals are expected - just wait for clock */
4854 (void) vlib_process_get_events (vm, 0);
4857 pool_foreach (pmr, lcm->pending_map_requests_pool,
4859 if (!pmr->to_be_removed)
4860 update_pending_request (pmr, period);
4864 remove_dead_pending_map_requests (lcm);
4866 update_map_register (lcm, period);
4867 update_rloc_probing (lcm, period);
4869 u64 now = clib_cpu_time_now ();
4871 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
4872 if (vec_len (expired) > 0)
4875 vec_foreach (mi, expired)
4877 process_expired_mapping (lcm, mi[0]);
4879 _vec_len (expired) = 0;
4888 vnet_lisp_stats_enable_disable (u8 enable)
4890 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4892 if (vnet_lisp_enable_disable_status () == 0)
4893 return VNET_API_ERROR_LISP_DISABLED;
4896 lcm->flags |= LISP_FLAG_STATS_ENABLED;
4898 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
4904 vnet_lisp_stats_enable_disable_state (void)
4906 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4908 if (vnet_lisp_enable_disable_status () == 0)
4909 return VNET_API_ERROR_LISP_DISABLED;
4911 return lcm->flags & LISP_FLAG_STATS_ENABLED;
4915 vnet_lisp_create_retry_process (lisp_cp_main_t * lcm)
4917 if (lcm->retry_service_index)
4920 lcm->retry_service_index = vlib_process_create (vlib_get_main (),
4921 "lisp-retry-service",
4922 send_map_resolver_service,
4923 16 /* stack_bytes */ );
4927 vnet_lisp_set_transport_protocol (u8 protocol)
4929 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4931 if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
4932 protocol > LISP_TRANSPORT_PROTOCOL_API)
4933 return VNET_API_ERROR_INVALID_ARGUMENT;
4935 lcm->transport_protocol = protocol;
4939 lisp_transport_protocol_t
4940 vnet_lisp_get_transport_protocol (void)
4942 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4943 return lcm->transport_protocol;
4947 vnet_lisp_enable_disable_xtr_mode (u8 is_enabled)
4949 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4950 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
4951 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4952 u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
4954 if (pitr_mode && is_enabled)
4955 return VNET_API_ERROR_INVALID_ARGUMENT;
4957 if (is_enabled && xtr_mode)
4959 if (!is_enabled && !xtr_mode)
4966 lisp_cp_register_dst_port (lcm->vlib_main);
4968 lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
4969 lcm->flags |= LISP_FLAG_XTR_MODE;
4975 lisp_cp_unregister_dst_port (lcm->vlib_main);
4977 lisp_cp_disable_l2_l3_ifaces (lcm);
4978 lcm->flags &= ~LISP_FLAG_XTR_MODE;
4984 vnet_lisp_enable_disable_pitr_mode (u8 is_enabled)
4986 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4987 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4988 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
4990 if (xtr_mode && is_enabled)
4991 return VNET_API_ERROR_INVALID_VALUE;
4993 if (is_enabled && pitr_mode)
4995 if (!is_enabled && !pitr_mode)
5000 /* create iface, no default route */
5001 lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
5002 lcm->flags |= LISP_FLAG_PITR_MODE;
5006 lisp_cp_disable_l2_l3_ifaces (lcm);
5007 lcm->flags &= ~LISP_FLAG_PITR_MODE;
5013 vnet_lisp_enable_disable_petr_mode (u8 is_enabled)
5015 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5016 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
5017 u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
5019 if (is_enabled && petr_mode)
5021 if (!is_enabled && !petr_mode)
5028 lisp_cp_register_dst_port (lcm->vlib_main);
5030 lcm->flags |= LISP_FLAG_PETR_MODE;
5036 lisp_cp_unregister_dst_port (lcm->vlib_main);
5038 lcm->flags &= ~LISP_FLAG_PETR_MODE;
5044 vnet_lisp_get_xtr_mode (void)
5046 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5047 return (lcm->flags & LISP_FLAG_XTR_MODE);
5051 vnet_lisp_get_pitr_mode (void)
5053 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5054 return (lcm->flags & LISP_FLAG_PITR_MODE);
5058 vnet_lisp_get_petr_mode (void)
5060 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5061 return (lcm->flags & LISP_FLAG_PETR_MODE);
5064 VLIB_INIT_FUNCTION (lisp_cp_init);
5067 * fd.io coding-style-patch-verification: ON
5070 * eval: (c-set-style "gnu")