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>
26 #include <openssl/evp.h>
27 #include <openssl/hmac.h>
29 lisp_cp_main_t lisp_control_main;
31 u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
35 LISP_CP_INPUT_NEXT_DROP,
37 } lisp_cp_input_next_t;
55 vnet_lisp_get_map_request_mode (void)
57 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
58 return lcm->map_request_mode;
62 auth_data_len_by_key_id (lisp_key_type_t key_id)
67 return SHA1_AUTH_DATA_LEN;
68 case HMAC_SHA_256_128:
69 return SHA256_AUTH_DATA_LEN;
71 clib_warning ("unsupported key type: %d!", key_id);
78 get_encrypt_fcn (lisp_key_type_t key_id)
84 case HMAC_SHA_256_128:
87 clib_warning ("unsupported encryption key type: %d!", key_id);
94 queue_map_request (gid_address_t * seid, gid_address_t * deid,
95 u8 smr_invoked, u8 is_resend);
97 ip_interface_address_t *
98 ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
99 u32 sw_if_index, u8 loop)
101 vnet_main_t *vnm = vnet_get_main ();
102 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
103 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
104 sw_if_index = swif->unnumbered_sw_if_index;
106 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
107 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
109 return pool_elt_at_index ((lm)->if_address_pool, ia);
113 ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
116 ip_interface_address_t *ia;
118 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
121 return ip_interface_address_get_address (lm, ia);
125 ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
126 u8 version, ip_address_t * result)
128 ip_lookup_main_t *lm;
131 lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
132 addr = ip_interface_get_first_address (lm, sw_if_index, version);
136 ip_address_set (result, addr, version);
141 * convert from a LISP address to a FIB prefix
144 ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
146 if (addr->version == IP4)
149 prefix->fp_proto = FIB_PROTOCOL_IP4;
150 memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
151 memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
155 prefix->fp_len = 128;
156 prefix->fp_proto = FIB_PROTOCOL_IP6;
157 memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
162 * convert from a LISP to a FIB prefix
165 ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
166 fib_prefix_t * fib_prefix)
168 ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
169 fib_prefix->fp_len = ip_prefix->len;
173 * Find the sw_if_index of the interface that would be used to egress towards
177 ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
179 fib_node_index_t fei;
182 ip_address_to_fib_prefix (dst, &prefix);
184 fei = fib_table_lookup (0, &prefix);
186 return (fib_entry_get_resolving_interface (fei));
190 * Find first IP of the interface that would be used to egress towards dst.
191 * Returns 1 if the address is found 0 otherwise.
194 ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
195 ip_address_t * result)
198 ip_lookup_main_t *lm;
202 ASSERT (result != 0);
204 ipver = ip_addr_version (dst);
206 lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
207 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
212 /* find the first ip address */
213 addr = ip_interface_get_first_address (lm, si, ipver);
217 ip_address_set (result, addr, ipver);
222 dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add)
228 dp_table = hash_get (lcm->table_id_by_vni, vni);
232 clib_warning ("vni %d not associated to a vrf!", vni);
233 return VNET_API_ERROR_INVALID_VALUE;
238 dp_table = hash_get (lcm->bd_id_by_vni, vni);
241 clib_warning ("vni %d not associated to a bridge domain!", vni);
242 return VNET_API_ERROR_INVALID_VALUE;
246 /* enable/disable data-plane interface */
250 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
252 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0]);
257 lisp_gpe_tenant_l2_iface_unlock (vni);
259 lisp_gpe_tenant_l3_iface_unlock (vni);
266 dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
268 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
271 memset (a, 0, sizeof (*a));
273 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
277 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
279 /* delete dp fwd entry */
282 a->locator_pairs = fe->locator_pairs;
283 a->vni = gid_address_vni (&fe->reid);
284 gid_address_copy (&a->rmt_eid, &fe->reid);
286 gid_address_copy (&a->lcl_eid, &fe->leid);
288 vnet_lisp_del_fwd_stats (a, feip[0]);
289 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
291 /* delete entry in fwd table */
292 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
293 vec_free (fe->locator_pairs);
294 pool_put (lcm->fwd_entry_pool, fe);
298 * Finds first remote locator with best (lowest) priority that has a local
299 * peer locator with an underlying route to it.
303 get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
304 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
306 u32 i, limitp = 0, li, found = 0, esi;
307 locator_set_t *rmt_ls, *lcl_ls;
308 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
309 locator_t *lp, *rmt = 0;
314 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
316 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
318 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
325 /* find unvisited remote locator with best priority */
326 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
328 if (0 != hash_get (checked, i))
331 li = vec_elt (rmt_ls->locator_indices, i);
332 lp = pool_elt_at_index (lcm->locator_pool, li);
334 /* we don't support non-IP locators for now */
335 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
338 if ((found && lp->priority == limitp)
339 || (!found && lp->priority >= limitp))
343 /* don't search for locators with lower priority and don't
344 * check this locator again*/
345 limitp = lp->priority;
346 hash_set (checked, i, 1);
350 /* check if a local locator with a route to remote locator exists */
353 /* find egress sw_if_index for rmt locator */
355 ip_fib_get_egress_iface_for_dst (lcm,
356 &gid_address_ip (&rmt->address));
357 if ((u32) ~ 0 == esi)
360 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
362 li = vec_elt (lcl_ls->locator_indices, i);
363 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
365 /* found local locator with the needed sw_if_index */
366 if (sl->sw_if_index == esi)
368 /* and it has an address */
369 if (0 == ip_interface_get_first_ip_address (lcm,
371 gid_address_ip_version
376 memset (&pair, 0, sizeof (pair));
377 ip_address_copy (&pair.rmt_loc,
378 &gid_address_ip (&rmt->address));
379 ip_address_copy (&pair.lcl_loc, lcl_addr);
380 pair.weight = rmt->weight;
381 pair.priority = rmt->priority;
382 vec_add1 (locator_pairs[0], pair);
396 gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
399 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
403 switch (fid_addr_type (fid))
405 case FID_ADDR_IP_PREF:
406 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
407 gid_address_ippref (dst) = fid_addr_ippref (fid);
410 gid_address_type (dst) = GID_ADDR_MAC;
411 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
414 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
420 vnet_lisp_map_register_state_get (void)
422 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
423 return lcm->map_registering;
427 vnet_lisp_rloc_probe_state_get (void)
429 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
430 return lcm->rloc_probing;
434 dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
436 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
437 gid_address_t *rmt_eid, *lcl_eid;
438 mapping_t *lcl_map, *rmt_map;
440 uword *feip = 0, *dpid;
442 u8 type, is_src_dst = 0;
445 memset (a, 0, sizeof (*a));
447 /* remove entry if it already exists */
448 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
450 dp_del_fwd_entry (lcm, src_map_index, dst_map_index);
453 * Determine local mapping and eid
456 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
458 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
459 lcl_eid = &lcl_map->eid;
462 * Determine remote mapping and eid
464 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
465 rmt_eid = &rmt_map->eid;
468 * Build and insert data plane forwarding entry
472 if (MR_MODE_SRC_DST == lcm->map_request_mode)
474 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
476 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
477 &gid_address_sd_dst (rmt_eid));
478 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
479 &gid_address_sd_src (rmt_eid));
483 gid_address_copy (&a->rmt_eid, rmt_eid);
484 gid_address_copy (&a->lcl_eid, lcl_eid);
489 gid_address_copy (&a->rmt_eid, rmt_eid);
491 a->vni = gid_address_vni (&a->rmt_eid);
492 a->is_src_dst = is_src_dst;
494 /* get vrf or bd_index associated to vni */
495 type = gid_address_type (&a->rmt_eid);
496 if (GID_ADDR_IP_PREFIX == type)
498 dpid = hash_get (lcm->table_id_by_vni, a->vni);
501 clib_warning ("vni %d not associated to a vrf!", a->vni);
504 a->table_id = dpid[0];
506 else if (GID_ADDR_MAC == type)
508 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
511 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
517 /* find best locator pair that 1) verifies LISP policy 2) are connected */
518 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
520 /* Either rmt mapping is negative or we can't find underlay path.
521 * Try again with petr if configured */
522 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
524 rmt_map = lisp_get_petr_mapping (lcm);
525 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
532 a->action = rmt_map->action;
535 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
537 /* add tunnel to fwd entry table XXX check return value from DP insertion */
538 pool_get (lcm->fwd_entry_pool, fe);
539 fe->locator_pairs = a->locator_pairs;
540 gid_address_copy (&fe->reid, &a->rmt_eid);
543 gid_address_copy (&fe->leid, &a->lcl_eid);
545 gid_address_copy (&fe->leid, lcl_eid);
547 fe->is_src_dst = is_src_dst;
548 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
549 fe - lcm->fwd_entry_pool);
556 } fwd_entry_mt_arg_t;
559 dp_add_fwd_entry_thread_fn (void *arg)
561 fwd_entry_mt_arg_t *a = arg;
562 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
563 dp_add_fwd_entry (lcm, a->si, a->di);
568 dp_add_fwd_entry_from_mt (u32 si, u32 di)
570 fwd_entry_mt_arg_t a;
572 memset (&a, 0, sizeof (a));
576 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
577 (u8 *) & a, sizeof (a));
582 * Returns vector of adjacencies.
584 * The caller must free the vector returned by this function.
586 * @param vni virtual network identifier
587 * @return vector of adjacencies
590 vnet_lisp_adjacencies_get_by_vni (u32 vni)
592 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
594 lisp_adjacency_t *adjs = 0, adj;
597 pool_foreach(fwd, lcm->fwd_entry_pool,
599 if (gid_address_vni (&fwd->reid) != vni)
602 gid_address_copy (&adj.reid, &fwd->reid);
603 gid_address_copy (&adj.leid, &fwd->leid);
604 vec_add1 (adjs, adj);
612 get_map_server (ip_address_t * a)
614 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
617 vec_foreach (m, lcm->map_servers)
619 if (!ip_address_cmp (&m->address, a))
628 get_map_resolver (ip_address_t * a)
630 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
633 vec_foreach (m, lcm->map_resolvers)
635 if (!ip_address_cmp (&m->address, a))
644 vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
647 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
648 lisp_msmr_t _ms, *ms = &_ms;
650 if (vnet_lisp_enable_disable_status () == 0)
652 clib_warning ("LISP is disabled!");
653 return VNET_API_ERROR_LISP_DISABLED;
658 if (get_map_server (addr))
660 clib_warning ("map-server %U already exists!", format_ip_address,
665 memset (ms, 0, sizeof (*ms));
666 ip_address_copy (&ms->address, addr);
667 vec_add1 (lcm->map_servers, ms[0]);
671 for (i = 0; i < vec_len (lcm->map_servers); i++)
673 ms = vec_elt_at_index (lcm->map_servers, i);
674 if (!ip_address_cmp (&ms->address, addr))
676 vec_del1 (lcm->map_servers, i);
686 * Add/remove mapping to/from map-cache. Overwriting not allowed.
689 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
690 u32 * map_index_result)
692 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
693 u32 mi, *map_indexp, map_index, i;
694 mapping_t *m, *old_map;
697 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
698 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
701 /* TODO check if overwriting and take appropriate actions */
702 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
704 clib_warning ("eid %U found in the eid-table", format_gid_address,
706 return VNET_API_ERROR_VALUE_EXIST;
709 pool_get (lcm->mapping_pool, m);
710 gid_address_copy (&m->eid, &a->eid);
711 m->locator_set_index = a->locator_set_index;
713 m->action = a->action;
715 m->is_static = a->is_static;
716 m->key = vec_dup (a->key);
717 m->key_id = a->key_id;
719 map_index = m - lcm->mapping_pool;
720 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
723 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
725 clib_warning ("Locator set with index %d doesn't exist",
726 a->locator_set_index);
727 return VNET_API_ERROR_INVALID_VALUE;
730 /* add eid to list of eids supported by locator-set */
731 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
732 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
733 a->locator_set_index);
734 vec_add1 (eid_indexes[0], map_index);
739 vec_add1 (lcm->local_mappings_indexes, map_index);
741 map_index_result[0] = map_index;
745 if (mi == GID_LOOKUP_MISS)
747 clib_warning ("eid %U not found in the eid-table",
748 format_gid_address, &a->eid);
749 return VNET_API_ERROR_INVALID_VALUE;
752 /* clear locator-set to eids binding */
753 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
754 a->locator_set_index);
755 for (i = 0; i < vec_len (eid_indexes[0]); i++)
757 map_indexp = vec_elt_at_index (eid_indexes[0], i);
758 if (map_indexp[0] == mi)
761 vec_del1 (eid_indexes[0], i);
763 /* remove local mark if needed */
764 m = pool_elt_at_index (lcm->mapping_pool, mi);
768 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
770 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
771 if (lm_indexp[0] == mi)
774 vec_del1 (lcm->local_mappings_indexes, k);
777 /* remove mapping from dictionary */
778 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
779 gid_address_free (&m->eid);
780 pool_put_index (lcm->mapping_pool, mi);
787 * Add/update/delete mapping to/in/from map-cache.
790 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
791 u32 * map_index_result)
797 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
799 if (vnet_lisp_enable_disable_status () == 0)
801 clib_warning ("LISP is disabled!");
802 return VNET_API_ERROR_LISP_DISABLED;
805 vni = gid_address_vni (&a->eid);
806 type = gid_address_type (&a->eid);
807 if (GID_ADDR_IP_PREFIX == type)
808 dp_table = hash_get (lcm->table_id_by_vni, vni);
809 else if (GID_ADDR_MAC == type)
810 dp_table = hash_get (lcm->bd_id_by_vni, vni);
814 clib_warning ("vni %d not associated to a %s!", vni,
815 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
816 return VNET_API_ERROR_INVALID_VALUE;
819 /* store/remove mapping from map-cache */
820 return vnet_lisp_map_cache_add_del (a, map_index_result);
824 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
826 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
827 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
829 if (vnet_lisp_enable_disable_status () == 0)
831 clib_warning ("LISP is disabled!");
835 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
836 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
838 if (!is_l2 && (vni == 0 || dp_id == 0))
840 clib_warning ("can't add/del default vni-vrf mapping!");
844 dp_idp = hash_get (dp_table_by_vni[0], vni);
845 vnip = hash_get (vni_by_dp_table[0], dp_id);
851 clib_warning ("vni %d or vrf %d already used in vrf/vni "
852 "mapping!", vni, dp_id);
855 hash_set (dp_table_by_vni[0], vni, dp_id);
856 hash_set (vni_by_dp_table[0], dp_id, vni);
858 /* create dp iface */
859 dp_add_del_iface (lcm, vni, is_l2, 1);
863 if (!dp_idp || !vnip)
865 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
866 "mapping!", vni, dp_id);
869 /* remove dp iface */
870 dp_add_del_iface (lcm, vni, is_l2, 0);
872 hash_unset (dp_table_by_vni[0], vni);
873 hash_unset (vni_by_dp_table[0], dp_id);
879 /* return 0 if the two locator sets are identical 1 otherwise */
881 compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
882 locator_t * new_locators)
885 locator_t *old_loc, *new_loc;
887 if (vec_len (old_ls_indexes) != vec_len (new_locators))
890 for (i = 0; i < vec_len (new_locators); i++)
892 old_li = vec_elt (old_ls_indexes, i);
893 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
895 new_loc = vec_elt_at_index (new_locators, i);
897 if (locator_cmp (old_loc, new_loc))
907 gid_address_t *eids_to_be_deleted;
908 } remove_mapping_args_t;
911 * Callback invoked when a sub-prefix is found
914 remove_mapping_if_needed (u32 mi, void *arg)
917 remove_mapping_args_t *a = arg;
918 lisp_cp_main_t *lcm = a->lcm;
922 m = pool_elt_at_index (lcm->mapping_pool, mi);
926 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
930 if (0 != vec_len (ls->locator_indices))
935 if (0 == vec_len (ls->locator_indices))
940 vec_add1 (a->eids_to_be_deleted, m->eid);
944 * This function searches map cache and looks for IP prefixes that are subset
945 * of the provided one. If such prefix is found depending on 'is_negative'
948 * 1) if is_negative is true and found prefix points to positive mapping,
949 * then the mapping is removed
950 * 2) if is_negative is false and found prefix points to negative mapping,
951 * then the mapping is removed
954 remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
958 remove_mapping_args_t a;
960 memset (&a, 0, sizeof (a));
962 /* do this only in src/dst mode ... */
963 if (MR_MODE_SRC_DST != lcm->map_request_mode)
966 /* ... and only for IP prefix */
967 if (GID_ADDR_SRC_DST != gid_address_type (eid)
968 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
971 a.is_negative = is_negative;
974 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
975 remove_mapping_if_needed, &a);
977 vec_foreach (e, a.eids_to_be_deleted)
979 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
981 memset (adj_args, 0, sizeof (adj_args[0]));
982 gid_address_copy (&adj_args->reid, e);
983 adj_args->is_add = 0;
984 if (vnet_lisp_add_del_adjacency (adj_args))
985 clib_warning ("failed to del adjacency!");
987 vnet_lisp_add_del_mapping (e, 0, 0, 0, 0, 0 /* is add */ , 0, 0);
990 vec_free (a.eids_to_be_deleted);
994 mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
996 timing_wheel_delete (&lcm->wheel, mi);
1000 is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
1002 fib_node_index_t fei;
1003 fib_prefix_t prefix;
1004 fib_entry_flag_t flags;
1006 ip_address_to_fib_prefix (addr, &prefix);
1008 fei = fib_table_lookup (0, &prefix);
1009 flags = fib_entry_get_flags (fei);
1010 return (FIB_ENTRY_FLAG_LOCAL & flags);
1014 * Adds/removes/updates mapping. Does not program forwarding.
1016 * @param eid end-host identifier
1017 * @param rlocs vector of remote locators
1018 * @param action action for negative map-reply
1019 * @param is_add add mapping if non-zero, delete otherwise
1020 * @param res_map_index the map-index that was created/updated/removed. It is
1021 * set to ~0 if no action is taken.
1022 * @param is_static used for distinguishing between statically learned
1023 remote mappings and mappings obtained from MR
1024 * @return return code
1027 vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
1028 u8 authoritative, u32 ttl, u8 is_add, u8 is_static,
1029 u32 * res_map_index)
1031 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1032 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1033 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1034 u32 mi, ls_index = 0, dst_map_index;
1038 if (vnet_lisp_enable_disable_status () == 0)
1040 clib_warning ("LISP is disabled!");
1041 return VNET_API_ERROR_LISP_DISABLED;
1045 res_map_index[0] = ~0;
1047 memset (m_args, 0, sizeof (m_args[0]));
1048 memset (ls_args, 0, sizeof (ls_args[0]));
1050 ls_args->locators = rlocs;
1052 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
1053 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1057 /* check if none of the locators match localy configured address */
1058 vec_foreach (loc, rlocs)
1060 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1061 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1063 clib_warning ("RLOC %U matches a local address!",
1064 format_gid_address, &loc->address);
1065 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1069 /* overwrite: if mapping already exists, decide if locators should be
1070 * updated and be done */
1071 if (old_map && gid_address_cmp (&old_map->eid, eid) == 0)
1073 if (!is_static && (old_map->is_static || old_map->local))
1075 /* do not overwrite local or static remote mappings */
1076 clib_warning ("mapping %U rejected due to collision with local "
1077 "or static remote mapping!", format_gid_address,
1082 locator_set_t *old_ls;
1084 /* update mapping attributes */
1085 old_map->action = action;
1086 old_map->authoritative = authoritative;
1089 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1090 old_map->locator_set_index);
1091 if (compare_locators (lcm, old_ls->locator_indices,
1094 /* set locator-set index to overwrite */
1095 ls_args->is_add = 1;
1096 ls_args->index = old_map->locator_set_index;
1097 vnet_lisp_add_del_locator_set (ls_args, 0);
1099 res_map_index[0] = mi;
1105 remove_overlapping_sub_prefixes (lcm, eid, 0 == ls_args->locators);
1107 ls_args->is_add = 1;
1108 ls_args->index = ~0;
1110 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1113 gid_address_copy (&m_args->eid, eid);
1115 m_args->action = action;
1116 m_args->locator_set_index = ls_index;
1117 m_args->is_static = is_static;
1119 vnet_lisp_map_cache_add_del (m_args, &dst_map_index);
1122 res_map_index[0] = dst_map_index;
1127 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
1129 clib_warning ("cannot delete mapping for eid %U",
1130 format_gid_address, eid);
1135 gid_address_copy (&m_args->eid, eid);
1136 m_args->locator_set_index = old_map->locator_set_index;
1138 /* delete mapping associated from map-cache */
1139 vnet_lisp_map_cache_add_del (m_args, 0);
1141 ls_args->is_add = 0;
1142 ls_args->index = old_map->locator_set_index;
1143 /* delete locator set */
1144 vnet_lisp_add_del_locator_set (ls_args, 0);
1146 /* delete timer associated to the mapping if any */
1147 if (old_map->timer_set)
1148 mapping_delete_timer (lcm, mi);
1150 /* return old mapping index */
1152 res_map_index[0] = mi;
1160 vnet_lisp_clear_all_remote_adjacencies (void)
1163 u32 mi, *map_indices = 0, *map_indexp;
1164 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1165 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1166 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
1169 pool_foreach_index (mi, lcm->mapping_pool,
1171 vec_add1 (map_indices, mi);
1175 vec_foreach (map_indexp, map_indices)
1177 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1180 dp_del_fwd_entry (lcm, 0, map_indexp[0]);
1182 dm_args->is_add = 0;
1183 gid_address_copy (&dm_args->eid, &map->eid);
1184 dm_args->locator_set_index = map->locator_set_index;
1186 /* delete mapping associated to fwd entry */
1187 vnet_lisp_map_cache_add_del (dm_args, 0);
1191 ls->index = map->locator_set_index;
1192 /* delete locator set */
1193 rv = vnet_lisp_add_del_locator_set (ls, 0);
1201 vec_free (map_indices);
1206 * Adds adjacency or removes forwarding entry associated to remote mapping.
1207 * Note that adjacencies are not stored, they only result in forwarding entries
1211 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
1213 lisp_cp_main_t *lcm = &lisp_control_main;
1214 u32 local_mi, remote_mi = ~0;
1216 if (vnet_lisp_enable_disable_status () == 0)
1218 clib_warning ("LISP is disabled!");
1219 return VNET_API_ERROR_LISP_DISABLED;
1222 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
1223 &a->reid, &a->leid);
1224 if (GID_LOOKUP_MISS == remote_mi)
1226 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
1227 format_gid_address, &a->reid);
1234 /* check if source eid has an associated mapping. If pitr mode is on,
1235 * just use the pitr's mapping */
1236 local_mi = lcm->lisp_pitr ? lcm->pitr_map_index :
1237 gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->leid);
1239 if (GID_LOOKUP_MISS == local_mi)
1241 clib_warning ("Local eid %U not found. Cannot add adjacency!",
1242 format_gid_address, &a->leid);
1247 /* update forwarding */
1248 dp_add_fwd_entry (lcm, local_mi, remote_mi);
1251 dp_del_fwd_entry (lcm, 0, remote_mi);
1257 vnet_lisp_set_map_request_mode (u8 mode)
1259 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1261 if (vnet_lisp_enable_disable_status () == 0)
1263 clib_warning ("LISP is disabled!");
1264 return VNET_API_ERROR_LISP_DISABLED;
1267 if (mode >= _MR_MODE_MAX)
1269 clib_warning ("Invalid LISP map request mode %d!", mode);
1270 return VNET_API_ERROR_INVALID_ARGUMENT;
1273 lcm->map_request_mode = mode;
1278 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1280 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1281 u32 locator_set_index = ~0;
1285 if (vnet_lisp_enable_disable_status () == 0)
1287 clib_warning ("LISP is disabled!");
1288 return VNET_API_ERROR_LISP_DISABLED;
1291 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1294 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1297 locator_set_index = p[0];
1301 pool_get (lcm->mapping_pool, m);
1302 m->locator_set_index = locator_set_index;
1305 lcm->pitr_map_index = m - lcm->mapping_pool;
1307 /* enable pitr mode */
1312 /* remove pitr mapping */
1313 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1315 /* disable pitr mode */
1322 * Configure Proxy-ETR
1324 * @param ip PETR's IP address
1325 * @param is_add Flag that indicates if this is an addition or removal
1327 * return 0 on success
1330 vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1332 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1335 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1338 if (vnet_lisp_enable_disable_status () == 0)
1340 clib_warning ("LISP is disabled!");
1341 return VNET_API_ERROR_LISP_DISABLED;
1344 memset (ls_args, 0, sizeof (*ls_args));
1348 /* Create dummy petr locator-set */
1349 memset (&loc, 0, sizeof (loc));
1350 gid_address_from_ip (&loc.address, ip);
1352 loc.state = loc.weight = 1;
1355 ls_args->is_add = 1;
1356 ls_args->index = ~0;
1357 vec_add1 (ls_args->locators, loc);
1358 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1360 /* Add petr mapping */
1361 pool_get (lcm->mapping_pool, m);
1362 m->locator_set_index = ls_index;
1363 lcm->petr_map_index = m - lcm->mapping_pool;
1365 /* Enable use-petr */
1366 lcm->flags |= LISP_FLAG_USE_PETR;
1370 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1372 /* Remove petr locator */
1373 ls_args->is_add = 0;
1374 ls_args->index = m->locator_set_index;
1375 vnet_lisp_add_del_locator_set (ls_args, 0);
1377 /* Remove petr mapping */
1378 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1380 /* Disable use-petr */
1381 lcm->flags &= ~LISP_FLAG_USE_PETR;
1386 /* cleans locator to locator-set data and removes locators not part of
1387 * any locator-set */
1389 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1391 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
1392 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1393 for (i = 0; i < vec_len (ls->locator_indices); i++)
1395 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1396 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1398 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1400 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1401 if (ls_indexp[0] == lsi)
1405 /* delete index for removed locator-set */
1406 vec_del1 (ls_indexes[0], j);
1408 /* delete locator if it's part of no locator-set */
1409 if (vec_len (ls_indexes[0]) == 0)
1411 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1412 vec_add1 (to_be_deleted, i);
1418 for (i = 0; i < vec_len (to_be_deleted); i++)
1420 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1421 vec_del1 (ls->locator_indices, loc_indexp[0]);
1423 vec_free (to_be_deleted);
1427 static inline uword *
1428 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
1430 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1435 /* find locator-set */
1438 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
1449 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
1455 ASSERT (ls != NULL);
1456 ASSERT (loc != NULL);
1458 vec_foreach (locit, ls->locator_indices)
1460 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1461 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1462 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1464 clib_warning ("Duplicate locator");
1465 return VNET_API_ERROR_VALUE_EXIST;
1473 remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1474 u32 ls_index, u32 loc_id)
1476 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1477 u32 **ls_indexes = NULL;
1479 ASSERT (ls != NULL);
1480 ASSERT (locit != NULL);
1482 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1483 pool_put_index (lcm->locator_pool, locit[0]);
1484 vec_del1 (ls->locator_indices, loc_id);
1485 vec_del1 (ls_indexes[0], ls_index);
1489 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
1490 locator_set_t * ls, u32 * ls_result)
1492 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1493 locator_t *loc = NULL, *itloc = NULL;
1494 uword _p = (u32) ~ 0, *p = &_p;
1495 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1501 if (vnet_lisp_enable_disable_status () == 0)
1503 clib_warning ("LISP is disabled!");
1504 return VNET_API_ERROR_LISP_DISABLED;
1507 p = get_locator_set_index (a, p);
1510 clib_warning ("locator-set %v doesn't exist", a->name);
1511 return VNET_API_ERROR_INVALID_ARGUMENT;
1516 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1519 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1521 return VNET_API_ERROR_INVALID_ARGUMENT;
1528 ls_result[0] = p[0];
1530 /* allocate locators */
1531 vec_foreach (itloc, a->locators)
1533 ret = is_locator_in_locator_set (lcm, ls, itloc);
1539 pool_get (lcm->locator_pool, loc);
1541 loc_index = loc - lcm->locator_pool;
1543 vec_add1 (ls->locator_indices, loc_index);
1545 vec_validate (lcm->locator_to_locator_sets, loc_index);
1546 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1548 vec_add1 (ls_indexes[0], p[0]);
1555 itloc = a->locators;
1557 vec_foreach (locit, ls->locator_indices)
1559 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1561 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1563 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1565 if (0 == loc->local &&
1566 !gid_address_cmp (&loc->address, &itloc->address))
1568 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1579 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
1582 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1584 uword _p = (u32) ~ 0, *p = &_p;
1589 if (vnet_lisp_enable_disable_status () == 0)
1591 clib_warning ("LISP is disabled!");
1592 return VNET_API_ERROR_LISP_DISABLED;
1597 p = get_locator_set_index (a, p);
1600 if (p && p[0] != (u32) ~ 0)
1602 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1605 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1610 /* clean locator to locator-set vectors and remove locators if
1611 * they're not part of another locator-set */
1612 clean_locator_to_locator_set (lcm, p[0]);
1614 /* remove locator indices from locator set */
1615 vec_free (ls->locator_indices);
1620 ls_result[0] = p[0];
1622 /* new locator-set */
1625 pool_get (lcm->locator_set_pool, ls);
1626 memset (ls, 0, sizeof (*ls));
1627 ls_index = ls - lcm->locator_set_pool;
1631 ls->name = vec_dup (a->name);
1633 if (!lcm->locator_set_index_by_name)
1634 lcm->locator_set_index_by_name = hash_create_vec (
1642 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
1645 /* mark as local locator-set */
1646 vec_add1 (lcm->local_locator_set_indexes, ls_index);
1648 ls->local = a->local;
1650 ls_result[0] = ls_index;
1653 ret = vnet_lisp_add_del_locator (a, ls, NULL);
1661 p = get_locator_set_index (a, p);
1664 clib_warning ("locator-set %v doesn't exists", a->name);
1668 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1671 clib_warning ("locator-set with index %d doesn't exists", p[0]);
1675 if (lcm->mreq_itr_rlocs == p[0])
1677 clib_warning ("Can't delete the locator-set used to constrain "
1678 "the itr-rlocs in map-requests!");
1682 if (vec_len (lcm->locator_set_to_eids) != 0)
1684 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
1685 if (vec_len (eid_indexes[0]) != 0)
1688 ("Can't delete a locator that supports a mapping!");
1693 /* clean locator to locator-sets data */
1694 clean_locator_to_locator_set (lcm, p[0]);
1700 vec_foreach_index (it, lcm->local_locator_set_indexes)
1702 lsi = vec_elt (lcm->local_locator_set_indexes, it);
1705 vec_del1 (lcm->local_locator_set_indexes, it);
1709 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
1711 vec_free (ls->name);
1712 vec_free (ls->locator_indices);
1713 pool_put (lcm->locator_set_pool, ls);
1719 vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
1721 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1723 lcm->rloc_probing = is_enable;
1728 vnet_lisp_map_register_enable_disable (u8 is_enable)
1730 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1732 lcm->map_registering = is_enable;
1737 vnet_lisp_enable_disable (u8 is_enable)
1740 clib_error_t *error = 0;
1741 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1742 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
1744 a->is_en = is_enable;
1745 error = vnet_lisp_gpe_enable_disable (a);
1748 return clib_error_return (0, "failed to %s data-plane!",
1749 a->is_en ? "enable" : "disable");
1754 /* enable all l2 and l3 ifaces */
1757 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
1758 dp_add_del_iface(lcm, vni, 0, 1);
1760 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
1761 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
1767 /* clear interface table */
1768 hash_free (lcm->fwd_entry_by_mapping_index);
1769 pool_free (lcm->fwd_entry_pool);
1772 /* update global flag */
1773 lcm->is_enabled = is_enable;
1779 vnet_lisp_enable_disable_status (void)
1781 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1782 return lcm->is_enabled;
1786 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
1788 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1790 lisp_msmr_t _mr, *mr = &_mr;
1792 if (vnet_lisp_enable_disable_status () == 0)
1794 clib_warning ("LISP is disabled!");
1795 return VNET_API_ERROR_LISP_DISABLED;
1801 if (get_map_resolver (&a->address))
1803 clib_warning ("map-resolver %U already exists!", format_ip_address,
1808 memset (mr, 0, sizeof (*mr));
1809 ip_address_copy (&mr->address, &a->address);
1810 vec_add1 (lcm->map_resolvers, *mr);
1812 if (vec_len (lcm->map_resolvers) == 1)
1813 lcm->do_map_resolver_election = 1;
1817 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
1819 mr = vec_elt_at_index (lcm->map_resolvers, i);
1820 if (!ip_address_cmp (&mr->address, &a->address))
1822 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
1823 lcm->do_map_resolver_election = 1;
1825 vec_del1 (lcm->map_resolvers, i);
1834 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
1836 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1839 if (vnet_lisp_enable_disable_status () == 0)
1841 clib_warning ("LISP is disabled!");
1842 return VNET_API_ERROR_LISP_DISABLED;
1847 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
1850 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
1851 return VNET_API_ERROR_INVALID_ARGUMENT;
1854 lcm->mreq_itr_rlocs = p[0];
1858 lcm->mreq_itr_rlocs = ~0;
1864 /* Statistics (not really errors) */
1865 #define foreach_lisp_cp_lookup_error \
1867 _(MAP_REQUESTS_SENT, "map-request sent")
1869 static char *lisp_cp_lookup_error_strings[] = {
1870 #define _(sym,string) string,
1871 foreach_lisp_cp_lookup_error
1877 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
1878 foreach_lisp_cp_lookup_error
1880 LISP_CP_LOOKUP_N_ERROR,
1881 } lisp_cp_lookup_error_t;
1885 LISP_CP_LOOKUP_NEXT_DROP,
1886 LISP_CP_LOOKUP_N_NEXT,
1887 } lisp_cp_lookup_next_t;
1891 gid_address_t dst_eid;
1892 ip_address_t map_resolver_ip;
1893 } lisp_cp_lookup_trace_t;
1896 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
1898 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1899 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1900 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
1902 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
1903 format_ip_address, &t->map_resolver_ip, format_gid_address,
1909 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
1910 ip_address_t * sloc)
1915 if (vec_len (lcm->map_resolvers) == 0)
1917 clib_warning ("No map-resolver configured");
1921 /* find the first mr ip we have a route to and the ip of the
1922 * iface that has a route to it */
1923 vec_foreach (mrit, lcm->map_resolvers)
1926 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
1928 ip_address_copy (mr_ip, a);
1930 /* also update globals */
1935 clib_warning ("Can't find map-resolver and local interface ip!");
1939 static gid_address_t *
1940 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
1946 ip_interface_address_t *ia = 0;
1947 gid_address_t gid_data, *gid = &gid_data;
1948 gid_address_t *rlocs = 0;
1949 ip_prefix_t *ippref = &gid_address_ippref (gid);
1950 ip_address_t *rloc = &ip_prefix_addr (ippref);
1952 memset (gid, 0, sizeof (gid[0]));
1953 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
1954 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
1956 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
1957 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
1959 /* Add ipv4 locators first TODO sort them */
1962 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1963 loc->sw_if_index, 1 /* unnumbered */,
1965 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
1966 ip_address_set (rloc, addr, IP4);
1967 ip_prefix_len (ippref) = 32;
1968 ip_prefix_normalize (ippref);
1969 vec_add1 (rlocs, gid[0]);
1972 /* Add ipv6 locators */
1973 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1974 loc->sw_if_index, 1 /* unnumbered */,
1976 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
1977 ip_address_set (rloc, addr, IP6);
1978 ip_prefix_len (ippref) = 128;
1979 ip_prefix_normalize (ippref);
1980 vec_add1 (rlocs, gid[0]);
1988 static vlib_buffer_t *
1989 build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
1990 ip_address_t * sloc, ip_address_t * rloc,
1991 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
1995 vlib_main_t *vm = lcm->vlib_main;
1997 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
1999 clib_warning ("Can't allocate buffer for Map-Request!");
2003 b = vlib_get_buffer (vm, bi);
2005 /* leave some space for the encap headers */
2006 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2009 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2010 1 /* rloc probe */ , nonce_res);
2012 /* push outer ip header */
2013 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2021 static vlib_buffer_t *
2022 build_encapsulated_map_request (lisp_cp_main_t * lcm,
2023 gid_address_t * seid, gid_address_t * deid,
2024 locator_set_t * loc_set, ip_address_t * mr_ip,
2025 ip_address_t * sloc, u8 is_smr_invoked,
2026 u64 * nonce_res, u32 * bi_res)
2030 gid_address_t *rlocs = 0;
2031 vlib_main_t *vm = lcm->vlib_main;
2033 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2035 clib_warning ("Can't allocate buffer for Map-Request!");
2039 b = vlib_get_buffer (vm, bi);
2041 /* leave some space for the encap headers */
2042 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2045 rlocs = build_itr_rloc_list (lcm, loc_set);
2047 if (MR_MODE_SRC_DST == lcm->map_request_mode
2048 && GID_ADDR_SRC_DST != gid_address_type (deid))
2051 memset (&sd, 0, sizeof (sd));
2052 build_src_dst (&sd, seid, deid);
2053 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2054 0 /* rloc probe */ , nonce_res);
2059 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
2060 0 /* rloc probe */ , nonce_res);
2063 /* push ecm: udp-ip-lisp */
2064 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2066 /* push outer ip header */
2067 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2077 reset_pending_mr_counters (pending_map_request_t * r)
2079 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2084 elect_map_resolver (lisp_cp_main_t * lcm)
2088 vec_foreach (mr, lcm->map_resolvers)
2092 ip_address_copy (&lcm->active_map_resolver, &mr->address);
2093 lcm->do_map_resolver_election = 0;
2101 free_map_register_records (mapping_t * maps)
2104 vec_foreach (map, maps) vec_free (map->locators);
2110 add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2111 ip_address_t * probed_loc)
2114 locator_t *loc, new;
2115 ip_interface_address_t *ia = 0;
2117 ip_address_t *new_ip = &gid_address_ip (&new.address);
2120 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2122 vec_foreach (li, ls->locator_indices)
2124 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2129 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2130 loc->sw_if_index, 1 /* unnumbered */,
2132 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2134 ip_address_set (new_ip, addr, IP4);
2137 /* Add ipv6 locators */
2138 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2139 loc->sw_if_index, 1 /* unnumbered */,
2141 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2143 ip_address_set (new_ip, addr, IP6);
2147 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2150 vec_add1 (m->locators, new);
2155 build_map_register_record_list (lisp_cp_main_t * lcm)
2157 mapping_t *recs = 0, rec, *m;
2160 pool_foreach(m, lcm->mapping_pool,
2162 /* for now build only local mappings */
2167 add_locators (lcm, &rec, m->locator_set_index, NULL);
2168 vec_add1 (recs, rec);
2176 update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2177 lisp_key_type_t key_id, u8 * key,
2178 u16 auth_data_len, u32 msg_len)
2180 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2181 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2183 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2184 (unsigned char *) map_reg_hdr, msg_len, NULL,
2186 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2191 static vlib_buffer_t *
2192 build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2193 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2194 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2199 u32 bi, auth_data_len = 0, msg_len = 0;
2200 vlib_main_t *vm = lcm->vlib_main;
2202 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2204 clib_warning ("Can't allocate buffer for Map-Register!");
2208 b = vlib_get_buffer (vm, bi);
2210 /* leave some space for the encap headers */
2211 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2213 auth_data_len = auth_data_len_by_key_id (key_id);
2214 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2215 auth_data_len, nonce_res,
2218 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2221 /* push outer ip header */
2222 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2230 get_egress_map_resolver_ip (lisp_cp_main_t * lcm, ip_address_t * ip)
2233 while (lcm->do_map_resolver_election
2234 | (0 == ip_fib_get_first_egress_ip_for_dst (lcm,
2235 &lcm->active_map_resolver,
2238 if (0 == elect_map_resolver (lcm))
2239 /* all map resolvers are down */
2241 /* restart MR checking by marking all of them up */
2242 vec_foreach (mr, lcm->map_resolvers) mr->is_down = 0;
2249 /* CP output statistics */
2250 #define foreach_lisp_cp_output_error \
2251 _(MAP_REGISTERS_SENT, "map-registers sent") \
2252 _(RLOC_PROBES_SENT, "rloc-probes sent")
2254 static char *lisp_cp_output_error_strings[] = {
2255 #define _(sym,string) string,
2256 foreach_lisp_cp_output_error
2262 #define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2263 foreach_lisp_cp_output_error
2265 LISP_CP_OUTPUT_N_ERROR,
2266 } lisp_cp_output_error_t;
2269 lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2270 vlib_frame_t * from_frame)
2275 /* dummy node used only for statistics */
2277 VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2278 .function = lisp_cp_output,
2279 .name = "lisp-cp-output",
2280 .vector_size = sizeof (u32),
2281 .format_trace = format_lisp_cp_input_trace,
2282 .type = VLIB_NODE_TYPE_INTERNAL,
2284 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2285 .error_strings = lisp_cp_output_error_strings,
2287 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2290 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2296 send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2297 u32 local_locator_set_index, ip_address_t * sloc,
2298 ip_address_t * rloc)
2305 u32 next_index, *to_next;
2306 gid_address_t *itr_rlocs;
2308 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2309 itr_rlocs = build_itr_rloc_list (lcm, ls);
2311 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2312 vec_free (itr_rlocs);
2316 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2318 next_index = (ip_addr_version (rloc) == IP4) ?
2319 ip4_lookup_node.index : ip6_lookup_node.index;
2321 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2323 /* Enqueue the packet */
2324 to_next = vlib_frame_vector_args (f);
2327 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2329 hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
2334 send_rloc_probes (lisp_cp_main_t * lcm)
2340 u32 si, rloc_probes_sent = 0;
2343 pool_foreach (e, lcm->fwd_entry_pool,
2345 if (vec_len (e->locator_pairs) == 0)
2348 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2351 clib_warning ("internal error: cannot find local eid %U in "
2352 "map-cache!", format_gid_address, &e->leid);
2355 lm = pool_elt_at_index (lcm->mapping_pool, si);
2357 /* get the best (lowest) priority */
2358 lprio = e->locator_pairs[0].priority;
2360 /* send rloc-probe for pair(s) with the best remote locator priority */
2361 vec_foreach (lp, e->locator_pairs)
2363 if (lp->priority != lprio)
2366 /* get first remote locator */
2367 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2374 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2375 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2381 send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2383 u32 bi, map_registers_sent = 0;
2388 u32 next_index, *to_next;
2389 ip_address_t *ms = 0;
2390 mapping_t *records, *r, *g;
2392 // TODO: support multiple map servers and do election
2393 if (0 == vec_len (lcm->map_servers))
2396 ms = &lcm->map_servers[0].address;
2398 if (0 == ip_fib_get_first_egress_ip_for_dst (lcm, ms, &sloc))
2400 clib_warning ("no eligible interface address found for %U!",
2401 format_ip_address, &lcm->map_servers[0]);
2405 records = build_map_register_record_list (lcm);
2409 vec_foreach (r, records)
2412 u8 key_id = r->key_id;
2415 continue; /* no secret key -> map-register cannot be sent */
2418 // TODO: group mappings that share common key
2420 b = build_map_register (lcm, &sloc, ms, &nonce, want_map_notif, g,
2426 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2428 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2429 ip4_lookup_node.index : ip6_lookup_node.index;
2431 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2433 /* Enqueue the packet */
2434 to_next = vlib_frame_vector_args (f);
2437 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2438 map_registers_sent++;
2440 hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
2442 free_map_register_records (records);
2444 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2445 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
2446 map_registers_sent);
2451 #define send_encapsulated_map_request(lcm, seid, deid, smr) \
2452 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
2454 #define resend_encapsulated_map_request(lcm, seid, deid, smr) \
2455 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
2458 _send_encapsulated_map_request (lisp_cp_main_t * lcm,
2459 gid_address_t * seid, gid_address_t * deid,
2460 u8 is_smr_invoked, u8 is_resend)
2462 u32 next_index, bi = 0, *to_next, map_index;
2466 locator_set_t *loc_set;
2468 pending_map_request_t *pmr, *duplicate_pmr = 0;
2472 /* if there is already a pending request remember it */
2475 pool_foreach(pmr, lcm->pending_map_requests_pool,
2477 if (!gid_address_cmp (&pmr->src, seid)
2478 && !gid_address_cmp (&pmr->dst, deid))
2480 duplicate_pmr = pmr;
2486 if (!is_resend && duplicate_pmr)
2488 /* don't send the request if there is a pending map request already */
2492 /* get locator-set for seid */
2493 if (!lcm->lisp_pitr)
2495 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
2496 if (map_index == ~0)
2498 clib_warning ("No local mapping found in eid-table for %U!",
2499 format_gid_address, seid);
2503 map = pool_elt_at_index (lcm->mapping_pool, map_index);
2508 ("Mapping found for src eid %U is not marked as local!",
2509 format_gid_address, seid);
2512 ls_index = map->locator_set_index;
2516 map_index = lcm->pitr_map_index;
2517 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
2518 ls_index = map->locator_set_index;
2521 /* overwrite locator set if map-request itr-rlocs configured */
2522 if (~0 != lcm->mreq_itr_rlocs)
2524 ls_index = lcm->mreq_itr_rlocs;
2527 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
2529 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
2532 duplicate_pmr->to_be_removed = 1;
2536 /* build the encapsulated map request */
2537 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
2538 &lcm->active_map_resolver,
2539 &sloc, is_smr_invoked, &nonce, &bi);
2544 /* set fib index to default and lookup node */
2545 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2546 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2547 ip4_lookup_node.index : ip6_lookup_node.index;
2549 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2551 /* Enqueue the packet */
2552 to_next = vlib_frame_vector_args (f);
2555 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2558 /* if there is a pending request already update it */
2560 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
2562 /* remove the oldest nonce */
2563 u64 CLIB_UNUSED (tmp), *nonce_del;
2564 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
2565 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
2566 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
2569 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
2570 hash_set (lcm->pending_map_requests_by_nonce, nonce,
2571 duplicate_pmr - lcm->pending_map_requests_pool);
2575 /* add map-request to pending requests table */
2576 pool_get (lcm->pending_map_requests_pool, pmr);
2577 memset (pmr, 0, sizeof (*pmr));
2578 gid_address_copy (&pmr->src, seid);
2579 gid_address_copy (&pmr->dst, deid);
2580 clib_fifo_add1 (pmr->nonces, nonce);
2581 pmr->is_smr_invoked = is_smr_invoked;
2582 reset_pending_mr_counters (pmr);
2583 hash_set (lcm->pending_map_requests_by_nonce, nonce,
2584 pmr - lcm->pending_map_requests_pool);
2591 get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
2593 ip4_header_t *ip4 = hdr;
2596 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
2598 ip_address_set (src, &ip4->src_address, IP4);
2599 ip_address_set (dst, &ip4->dst_address, IP4);
2604 ip_address_set (src, &ip6->src_address, IP6);
2605 ip_address_set (dst, &ip6->dst_address, IP6);
2610 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
2614 u32 vni = ~0, table_id = ~0;
2616 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
2617 IP4 ? FIB_PROTOCOL_IP4 :
2623 vnip = hash_get (lcm->vni_by_table_id, table_id);
2627 clib_warning ("vrf %d is not mapped to any vni!", table_id);
2633 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
2639 l2input_main_t *l2im = &l2input_main;
2640 l2_input_config_t *config;
2641 l2_bridge_domain_t *bd_config;
2643 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
2644 config = vec_elt_at_index (l2im->configs, sw_if_index0);
2645 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
2647 vnip = hash_get (lcm->vni_by_bd_id, bd_config->bd_id);
2651 clib_warning ("bridge domain %d is not mapped to any vni!",
2658 get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
2659 gid_address_t * src, gid_address_t * dst,
2664 memset (src, 0, sizeof (*src));
2665 memset (dst, 0, sizeof (*dst));
2667 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
2670 u8 version, preflen;
2672 gid_address_type (src) = GID_ADDR_IP_PREFIX;
2673 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
2675 ip = vlib_buffer_get_current (b);
2676 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
2678 version = gid_address_ip_version (src);
2679 preflen = ip_address_max_len (version);
2680 gid_address_ippref_len (src) = preflen;
2681 gid_address_ippref_len (dst) = preflen;
2683 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
2684 gid_address_vni (dst) = vni;
2685 gid_address_vni (src) = vni;
2687 else if (LISP_AFI_MAC == type)
2689 ethernet_header_t *eh;
2691 eh = vlib_buffer_get_current (b);
2693 gid_address_type (src) = GID_ADDR_MAC;
2694 gid_address_type (dst) = GID_ADDR_MAC;
2695 mac_copy (&gid_address_mac (src), eh->src_address);
2696 mac_copy (&gid_address_mac (dst), eh->dst_address);
2699 vni = lisp_get_vni_from_buffer_eth (lcm, b);
2701 gid_address_vni (dst) = vni;
2702 gid_address_vni (src) = vni;
2704 else if (LISP_AFI_LCAF == type)
2706 /* Eventually extend this to support NSH and other */
2712 lisp_cp_lookup_inline (vlib_main_t * vm,
2713 vlib_node_runtime_t * node,
2714 vlib_frame_t * from_frame, int overlay)
2716 u32 *from, *to_next_drop, di, si;
2717 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2718 u32 pkts_mapped = 0;
2719 uword n_left_from, n_left_to_next_drop;
2721 from = vlib_frame_vector_args (from_frame);
2722 n_left_from = from_frame->n_vectors;
2724 while (n_left_from > 0)
2726 vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
2727 to_next_drop, n_left_to_next_drop);
2729 while (n_left_from > 0 && n_left_to_next_drop > 0)
2733 gid_address_t src, dst;
2738 to_next_drop[0] = pi0;
2740 n_left_to_next_drop -= 1;
2742 b0 = vlib_get_buffer (vm, pi0);
2743 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
2745 /* src/dst eid pair */
2746 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
2748 /* if we have remote mapping for destination already in map-chache
2749 add forwarding tunnel directly. If not send a map-request */
2750 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
2754 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
2755 /* send a map-request also in case of negative mapping entry
2756 with corresponding action */
2757 if (m->action == LISP_SEND_MAP_REQUEST)
2759 /* send map-request */
2760 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2761 0 /* is_resend */ );
2766 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
2770 dp_add_fwd_entry_from_mt (si, di);
2776 /* send map-request */
2777 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2778 0 /* is_resend */ );
2782 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2784 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
2787 memset (tr, 0, sizeof (*tr));
2788 gid_address_copy (&tr->dst_eid, &dst);
2789 ip_address_copy (&tr->map_resolver_ip,
2790 &lcm->active_map_resolver);
2792 gid_address_free (&dst);
2793 gid_address_free (&src);
2796 vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
2797 n_left_to_next_drop);
2799 vlib_node_increment_counter (vm, node->node_index,
2800 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
2802 return from_frame->n_vectors;
2806 lisp_cp_lookup_ip4 (vlib_main_t * vm,
2807 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2809 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
2813 lisp_cp_lookup_ip6 (vlib_main_t * vm,
2814 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2816 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
2820 lisp_cp_lookup_l2 (vlib_main_t * vm,
2821 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2823 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
2827 lisp_cp_lookup_nsh (vlib_main_t * vm,
2828 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2830 /* TODO decide if NSH should be propagated as LCAF or not */
2831 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
2835 VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
2836 .function = lisp_cp_lookup_ip4,
2837 .name = "lisp-cp-lookup-ip4",
2838 .vector_size = sizeof (u32),
2839 .format_trace = format_lisp_cp_lookup_trace,
2840 .type = VLIB_NODE_TYPE_INTERNAL,
2842 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2843 .error_strings = lisp_cp_lookup_error_strings,
2845 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2848 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2854 VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
2855 .function = lisp_cp_lookup_ip6,
2856 .name = "lisp-cp-lookup-ip6",
2857 .vector_size = sizeof (u32),
2858 .format_trace = format_lisp_cp_lookup_trace,
2859 .type = VLIB_NODE_TYPE_INTERNAL,
2861 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2862 .error_strings = lisp_cp_lookup_error_strings,
2864 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2867 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2873 VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
2874 .function = lisp_cp_lookup_l2,
2875 .name = "lisp-cp-lookup-l2",
2876 .vector_size = sizeof (u32),
2877 .format_trace = format_lisp_cp_lookup_trace,
2878 .type = VLIB_NODE_TYPE_INTERNAL,
2880 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2881 .error_strings = lisp_cp_lookup_error_strings,
2883 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2886 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2892 VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
2893 .function = lisp_cp_lookup_nsh,
2894 .name = "lisp-cp-lookup-nsh",
2895 .vector_size = sizeof (u32),
2896 .format_trace = format_lisp_cp_lookup_trace,
2897 .type = VLIB_NODE_TYPE_INTERNAL,
2899 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2900 .error_strings = lisp_cp_lookup_error_strings,
2902 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2905 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2910 /* lisp_cp_input statistics */
2911 #define foreach_lisp_cp_input_error \
2913 _(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
2914 _(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
2915 _(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
2916 _(MAP_REPLIES_RECEIVED, "map-replies received")
2918 static char *lisp_cp_input_error_strings[] = {
2919 #define _(sym,string) string,
2920 foreach_lisp_cp_input_error
2926 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
2927 foreach_lisp_cp_input_error
2929 LISP_CP_INPUT_N_ERROR,
2930 } lisp_cp_input_error_t;
2934 gid_address_t dst_eid;
2935 ip4_address_t map_resolver_ip;
2936 } lisp_cp_input_trace_t;
2939 format_lisp_cp_input_trace (u8 * s, va_list * args)
2941 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2942 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
2943 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
2944 va_arg (*args, lisp_cp_input_trace_t *);
2946 s = format (s, "LISP-CP-INPUT: TODO");
2951 remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
2954 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
2955 memset (adj_args, 0, sizeof (adj_args[0]));
2957 m = pool_elt_at_index (lcm->mapping_pool, mi);
2959 gid_address_copy (&adj_args->reid, &m->eid);
2960 adj_args->is_add = 0;
2961 if (vnet_lisp_add_del_adjacency (adj_args))
2962 clib_warning ("failed to del adjacency!");
2964 vnet_lisp_add_del_mapping (&m->eid, 0, 0, 0, ~0, 0 /* is_add */ ,
2965 0 /* is_static */ , 0);
2966 mapping_delete_timer (lcm, mi);
2970 mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
2971 f64 expiration_time)
2974 u64 now = clib_cpu_time_now ();
2975 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
2976 u64 exp_clock_time = now + expiration_time * cpu_cps;
2978 m = pool_elt_at_index (lcm->mapping_pool, mi);
2981 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
2985 map_records_arg_free (map_records_arg_t * a)
2988 vec_foreach (m, a->mappings)
2990 vec_free (m->locators);
2991 gid_address_free (&m->eid);
2998 process_map_reply (map_records_arg_t * a)
3001 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3002 u32 dst_map_index = 0;
3003 pending_map_request_t *pmr;
3007 if (a->is_rloc_probe)
3010 /* Check pending requests table and nonce */
3011 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
3014 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
3017 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
3019 vec_foreach (m, a->mappings)
3021 /* insert/update mappings cache */
3022 vnet_lisp_add_del_mapping (&m->eid, m->locators, m->action,
3023 m->authoritative, m->ttl,
3024 1, 0 /* is_static */ , &dst_map_index);
3026 if (dst_map_index == (u32) ~ 0)
3029 /* try to program forwarding only if mapping saved or updated */
3030 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3031 memset (adj_args, 0, sizeof (adj_args[0]));
3033 gid_address_copy (&adj_args->leid, &pmr->src);
3034 gid_address_copy (&adj_args->reid, &m->eid);
3035 adj_args->is_add = 1;
3036 if (vnet_lisp_add_del_adjacency (adj_args))
3037 clib_warning ("failed to add adjacency!");
3039 if ((u32) ~ 0 != m->ttl)
3040 mapping_start_expiration_timer (lcm, dst_map_index, m->ttl * 60);
3043 /* remove pending map request entry */
3046 clib_fifo_foreach (noncep, pmr->nonces, ({
3047 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
3051 clib_fifo_free (pmr->nonces);
3052 pool_put (lcm->pending_map_requests_pool, pmr);
3055 map_records_arg_free (a);
3060 is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3061 lisp_key_type_t key_id, u8 * key)
3067 auth_data_len = auth_data_len_by_key_id (key_id);
3068 if ((u16) ~ 0 == auth_data_len)
3070 clib_warning ("invalid length for key_id %d!", key_id);
3074 /* save auth data */
3075 vec_validate (auth_data, auth_data_len - 1);
3076 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3078 /* clear auth data */
3079 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3081 /* get hash of the message */
3082 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3083 (unsigned char *) h, msg_len, NULL, NULL);
3085 result = memcmp (code, auth_data, auth_data_len);
3087 vec_free (auth_data);
3093 process_map_notify (map_records_arg_t * a)
3095 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3098 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
3101 clib_warning ("No pending map-register entry with nonce %lu!",
3106 map_records_arg_free (a);
3107 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3111 get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3115 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3118 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3122 return pool_elt_at_index (lcm->mapping_pool, mi);
3126 * When map-notify is received it is necessary that all EIDs in the record
3127 * list share common key. The key is then used to verify authentication
3128 * data in map-notify message.
3131 map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3132 u32 key_id, u8 ** key_out)
3134 u32 i, len = vec_len (maps);
3137 /* get key of the first mapping */
3138 m = get_mapping (lcm, &maps[0].eid);
3142 key_out[0] = m->key;
3144 for (i = 1; i < len; i++)
3146 m = get_mapping (lcm, &maps[i].eid);
3150 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3152 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3160 parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3162 locator_t *locators = 0;
3168 /* parse record eid */
3169 for (i = 0; i < count; i++)
3171 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3174 clib_warning ("Failed to parse mapping record!");
3175 vec_foreach (loc, locators) locator_free (loc);
3176 vec_free (locators);
3180 m.locators = locators;
3181 gid_address_copy (&m.eid, &deid);
3182 vec_add1 (a->mappings, m);
3188 static map_records_arg_t *
3189 parse_map_notify (vlib_buffer_t * b)
3192 map_notify_hdr_t *mnotif_hdr;
3193 lisp_key_type_t key_id;
3194 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3197 u16 auth_data_len = 0;
3199 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
3201 memset (a, 0, sizeof (*a));
3202 mnotif_hdr = vlib_buffer_get_current (b);
3203 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3204 memset (&deid, 0, sizeof (deid));
3206 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3207 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3208 auth_data_len = auth_data_len_by_key_id (key_id);
3210 /* advance buffer by authentication data */
3211 vlib_buffer_pull (b, auth_data_len);
3213 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3214 rc = parse_map_records (b, a, record_count);
3217 map_records_arg_free (a);
3221 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3224 map_records_arg_free (a);
3228 /* verify authentication data */
3229 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
3230 - (u8 *) mnotif_hdr, key_id, key))
3232 clib_warning ("Map-notify auth data verification failed for nonce %lu!",
3234 map_records_arg_free (a);
3240 static vlib_buffer_t *
3241 build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
3242 ip_address_t * dst, u64 nonce, u8 probe_bit,
3243 mapping_t * records, u16 dst_port, u32 * bi_res)
3247 vlib_main_t *vm = lcm->vlib_main;
3249 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
3251 clib_warning ("Can't allocate buffer for Map-Register!");
3255 b = vlib_get_buffer (vm, bi);
3257 /* leave some space for the encap headers */
3258 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
3260 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
3262 /* push outer ip header */
3263 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst);
3270 send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
3271 u8 probe_bit, u64 nonce, u16 dst_port,
3272 ip_address_t * probed_loc)
3278 u32 next_index, *to_next;
3279 mapping_t *records = 0, *m;
3281 m = pool_elt_at_index (lcm->mapping_pool, mi);
3285 vec_add1 (records, m[0]);
3286 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
3287 memset (&src, 0, sizeof (src));
3289 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
3291 clib_warning ("can't find inteface address for %U", format_ip_address,
3296 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
3300 free_map_register_records (records);
3302 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3303 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3304 ip4_lookup_node.index : ip6_lookup_node.index;
3306 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3308 /* Enqueue the packet */
3309 to_next = vlib_frame_vector_args (f);
3312 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3317 find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
3319 const i32 start = vnet_buffer (b)->ip.start_of_ip_header;
3320 if (start < 0 && start < -sizeof (b->pre_data))
3326 *ip_hdr = b->data + start;
3327 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
3332 process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
3333 lisp_cp_main_t * lcm, vlib_buffer_t * b)
3336 ip_address_t *dst_loc = 0, probed_loc, src_loc;
3338 map_request_hdr_t *mreq_hdr;
3339 gid_address_t src, dst;
3341 u32 i, len = 0, rloc_probe_recv = 0;
3342 gid_address_t *itr_rlocs = 0;
3344 mreq_hdr = vlib_buffer_get_current (b);
3345 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
3348 ("Only SMR Map-Requests and RLOC probe supported for now!");
3352 vlib_buffer_pull (b, sizeof (*mreq_hdr));
3353 nonce = MREQ_NONCE (mreq_hdr);
3356 len = lisp_msg_parse_addr (b, &src);
3360 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
3361 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
3365 /* parse eid records and send SMR-invoked map-requests */
3366 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
3368 memset (&dst, 0, sizeof (dst));
3369 len = lisp_msg_parse_eid_rec (b, &dst);
3372 clib_warning ("Can't parse map-request EID-record");
3376 if (MREQ_SMR (mreq_hdr))
3378 /* send SMR-invoked map-requests */
3379 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
3381 else if (MREQ_RLOC_PROBE (mreq_hdr))
3383 find_ip_header (b, &ip_hdr);
3386 clib_warning ("Cannot find the IP header!");
3390 memset (&m, 0, sizeof (m));
3391 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3393 // TODO: select best locator; for now use the first one
3394 dst_loc = &gid_address_ip (&itr_rlocs[0]);
3396 /* get src/dst IP addresses */
3397 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
3399 // TODO get source port from buffer
3400 u16 src_port = LISP_CONTROL_PORT;
3402 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
3403 src_port, &probed_loc);
3408 vlib_node_increment_counter (vm, node->node_index,
3409 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
3411 vec_free (itr_rlocs);
3414 static map_records_arg_t *
3415 parse_map_reply (vlib_buffer_t * b)
3422 map_reply_hdr_t *mrep_hdr;
3423 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
3424 memset (a, 0, sizeof (*a));
3425 locator_t *locators;
3427 mrep_hdr = vlib_buffer_get_current (b);
3428 a->nonce = MREP_NONCE (mrep_hdr);
3429 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
3430 vlib_buffer_pull (b, sizeof (*mrep_hdr));
3432 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
3434 memset (&m, 0, sizeof (m));
3436 h = vlib_buffer_get_current (b);
3438 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
3439 m.action = MAP_REC_ACTION (h);
3440 m.authoritative = MAP_REC_AUTH (h);
3442 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
3445 clib_warning ("Failed to parse mapping record!");
3446 map_records_arg_free (a);
3450 m.locators = locators;
3451 gid_address_copy (&m.eid, &deid);
3452 vec_add1 (a->mappings, m);
3458 queue_map_reply_for_processing (map_records_arg_t * a)
3460 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
3464 queue_map_notify_for_processing (map_records_arg_t * a)
3466 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
3470 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
3471 vlib_frame_t * from_frame)
3473 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
3474 map_notifies_recv = 0;
3475 lisp_msg_type_e type;
3476 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3477 map_records_arg_t *a;
3479 from = vlib_frame_vector_args (from_frame);
3480 n_left_from = from_frame->n_vectors;
3483 while (n_left_from > 0)
3485 u32 n_left_to_next_drop;
3487 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
3488 to_next_drop, n_left_to_next_drop);
3489 while (n_left_from > 0 && n_left_to_next_drop > 0)
3497 to_next_drop[0] = bi0;
3499 n_left_to_next_drop -= 1;
3501 b0 = vlib_get_buffer (vm, bi0);
3503 type = lisp_msg_type (vlib_buffer_get_current (b0));
3506 case LISP_MAP_REPLY:
3507 a = parse_map_reply (b0);
3510 if (a->is_rloc_probe)
3511 rloc_probe_rep_recv++;
3512 queue_map_reply_for_processing (a);
3515 case LISP_MAP_REQUEST:
3516 process_map_request (vm, node, lcm, b0);
3518 case LISP_MAP_NOTIFY:
3519 a = parse_map_notify (b0);
3522 map_notifies_recv++;
3523 queue_map_notify_for_processing (a);
3527 clib_warning ("Unsupported LISP message type %d", type);
3531 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
3533 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3539 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
3540 n_left_to_next_drop);
3542 vlib_node_increment_counter (vm, node->node_index,
3543 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
3544 rloc_probe_rep_recv);
3545 vlib_node_increment_counter (vm, node->node_index,
3546 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
3548 return from_frame->n_vectors;
3552 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
3553 .function = lisp_cp_input,
3554 .name = "lisp-cp-input",
3555 .vector_size = sizeof (u32),
3556 .format_trace = format_lisp_cp_input_trace,
3557 .type = VLIB_NODE_TYPE_INTERNAL,
3559 .n_errors = LISP_CP_INPUT_N_ERROR,
3560 .error_strings = lisp_cp_input_error_strings,
3562 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
3565 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
3571 lisp_cp_init (vlib_main_t * vm)
3573 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3574 clib_error_t *error = 0;
3576 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
3579 lcm->im4 = &ip4_main;
3580 lcm->im6 = &ip6_main;
3581 lcm->vlib_main = vm;
3582 lcm->vnet_main = vnet_get_main ();
3583 lcm->mreq_itr_rlocs = ~0;
3586 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
3588 gid_dictionary_init (&lcm->mapping_index_by_gid);
3589 lcm->do_map_resolver_election = 1;
3590 lcm->map_request_mode = MR_MODE_DST_ONLY;
3592 /* default vrf mapped to vni 0 */
3593 hash_set (lcm->table_id_by_vni, 0, 0);
3594 hash_set (lcm->vni_by_table_id, 0, 0);
3596 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
3597 lisp_cp_input_node.index, 1 /* is_ip4 */ );
3598 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
3599 lisp_cp_input_node.index, 0 /* is_ip4 */ );
3601 u64 now = clib_cpu_time_now ();
3602 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
3607 lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
3608 lisp_api_stats_t * stat, lisp_stats_key_t * key,
3612 lisp_gpe_fwd_entry_key_t fwd_key;
3613 const lisp_gpe_tunnel_t *lgt;
3616 memset (stat, 0, sizeof (*stat));
3617 memset (&fwd_key, 0, sizeof (fwd_key));
3619 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
3622 gid_to_dp_address (&fe->reid, &stat->deid);
3623 gid_to_dp_address (&fe->leid, &stat->seid);
3624 stat->vni = gid_address_vni (&fe->reid);
3626 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
3627 stat->loc_rloc = lgt->key->lcl;
3628 stat->rmt_rloc = lgt->key->rmt;
3630 s = pool_elt_at_index (lgm->lisp_stats_pool, stats_index);
3636 vnet_lisp_get_stats (void)
3638 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
3639 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3640 lisp_api_stats_t *stats = 0, stat;
3641 lisp_stats_key_t *key;
3645 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
3647 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
3648 vec_add1 (stats, stat);
3656 send_map_request_thread_fn (void *arg)
3658 map_request_args_t *a = arg;
3659 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3662 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
3664 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
3670 queue_map_request (gid_address_t * seid, gid_address_t * deid,
3671 u8 smr_invoked, u8 is_resend)
3673 map_request_args_t a;
3675 a.is_resend = is_resend;
3676 gid_address_copy (&a.seid, seid);
3677 gid_address_copy (&a.deid, deid);
3678 a.smr_invoked = smr_invoked;
3680 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
3681 (u8 *) & a, sizeof (a));
3686 * Take an action with a pending map request depending on expiration time
3687 * and re-try counters.
3690 update_pending_request (pending_map_request_t * r, f64 dt)
3692 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3695 if (r->time_to_expire - dt < 0)
3696 /* it's time to decide what to do with this pending request */
3698 if (r->retries_num >= NUMBER_OF_RETRIES)
3699 /* too many retries -> assume current map resolver is not available */
3701 mr = get_map_resolver (&lcm->active_map_resolver);
3704 clib_warning ("Map resolver %U not found - probably deleted "
3705 "by the user recently.", format_ip_address,
3706 &lcm->active_map_resolver);
3710 clib_warning ("map resolver %U is unreachable, ignoring",
3711 format_ip_address, &lcm->active_map_resolver);
3713 /* mark current map resolver unavailable so it won't be
3714 * selected next time */
3716 mr->last_update = vlib_time_now (lcm->vlib_main);
3719 reset_pending_mr_counters (r);
3720 elect_map_resolver (lcm);
3722 /* try to find a next eligible map resolver and re-send */
3723 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3729 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3732 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
3736 r->time_to_expire -= dt;
3740 remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
3743 pending_map_request_t *pmr;
3744 u32 *to_be_removed = 0, *pmr_index;
3747 pool_foreach (pmr, lcm->pending_map_requests_pool,
3749 if (pmr->to_be_removed)
3751 clib_fifo_foreach (nonce, pmr->nonces, ({
3752 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
3755 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
3760 vec_foreach (pmr_index, to_be_removed)
3761 pool_put_index (lcm->pending_map_requests_by_nonce, pmr_index[0]);
3763 vec_free (to_be_removed);
3767 update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
3769 static f64 time_left = RLOC_PROBING_INTERVAL;
3771 if (!lcm->is_enabled || !lcm->rloc_probing)
3777 time_left = RLOC_PROBING_INTERVAL;
3778 send_rloc_probes (lcm);
3783 update_map_register (lisp_cp_main_t * lcm, f64 dt)
3785 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
3786 static u64 mreg_sent_counter = 0;
3788 if (!lcm->is_enabled || !lcm->map_registering)
3794 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
3795 time_left = MAP_REGISTER_INTERVAL;
3798 mreg_sent_counter++;
3799 time_left = QUICK_MAP_REGISTER_INTERVAL;
3801 send_map_register (lcm, 1 /* want map notify */ );
3806 send_map_resolver_service (vlib_main_t * vm,
3807 vlib_node_runtime_t * rt, vlib_frame_t * f)
3811 pending_map_request_t *pmr;
3812 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3816 vlib_process_wait_for_event_or_clock (vm, period);
3818 /* currently no signals are expected - just wait for clock */
3819 (void) vlib_process_get_events (vm, 0);
3822 pool_foreach (pmr, lcm->pending_map_requests_pool,
3824 if (!pmr->to_be_removed)
3825 update_pending_request (pmr, period);
3829 remove_dead_pending_map_requests (lcm);
3831 update_map_register (lcm, period);
3832 update_rloc_probing (lcm, period);
3834 u64 now = clib_cpu_time_now ();
3836 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
3837 if (vec_len (expired) > 0)
3840 vec_foreach (mi, expired)
3842 remove_expired_mapping (lcm, mi[0]);
3844 _vec_len (expired) = 0;
3853 vnet_lisp_stats_enable_disable (u8 enable)
3855 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3857 if (vnet_lisp_enable_disable_status () == 0)
3858 return VNET_API_ERROR_LISP_DISABLED;
3861 lcm->flags |= LISP_FLAG_STATS_ENABLED;
3863 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
3869 vnet_lisp_stats_enable_disable_state (void)
3871 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3873 if (vnet_lisp_enable_disable_status () == 0)
3874 return VNET_API_ERROR_LISP_DISABLED;
3876 return lcm->flags & LISP_FLAG_STATS_ENABLED;
3880 VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
3881 .function = send_map_resolver_service,
3882 .type = VLIB_NODE_TYPE_PROCESS,
3883 .name = "lisp-retry-service",
3884 .process_log2_n_stack_bytes = 16,
3888 VLIB_INIT_FUNCTION (lisp_cp_init);
3891 * fd.io coding-style-patch-verification: ON
3894 * eval: (c-set-style "gnu")