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 <vnet/lisp-cp/control.h>
17 #include <vnet/lisp-cp/packets.h>
18 #include <vnet/lisp-cp/lisp_msg_serdes.h>
19 #include <vnet/lisp-gpe/lisp_gpe.h>
22 add_fwd_entry (lisp_cp_main_t* lcm, u32 src_map_index, u32 dst_map_index);
25 del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index);
28 compare_locators (lisp_cp_main_t *lcm, u32 * old_ls_indexes,
29 locator_t * new_locators);
31 /* Stores mapping in map-cache. It does NOT program data plane forwarding for
32 * remote/learned mappings. */
34 vnet_lisp_add_del_mapping (vnet_lisp_add_del_mapping_args_t * a,
35 u32 * map_index_result)
37 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
38 u32 mi, * map_indexp, map_index, i;
39 mapping_t * m, * old_map;
42 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->deid);
43 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
46 /* TODO check if overwriting and take appropriate actions */
47 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid,
50 clib_warning("eid %U found in the eid-table", format_ip_address,
52 return VNET_API_ERROR_VALUE_EXIST;
55 pool_get(lcm->mapping_pool, m);
57 m->locator_set_index = a->locator_set_index;
59 m->action = a->action;
62 map_index = m - lcm->mapping_pool;
63 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->deid, map_index,
66 if (pool_is_free_index(lcm->locator_set_pool, a->locator_set_index))
68 clib_warning("Locator set with index %d doesn't exist",
69 a->locator_set_index);
70 return VNET_API_ERROR_INVALID_VALUE;
73 /* add eid to list of eids supported by locator-set */
74 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
75 eid_indexes = vec_elt_at_index(lcm->locator_set_to_eids,
76 a->locator_set_index);
77 vec_add1(eid_indexes[0], map_index);
82 vec_add1(lcm->local_mappings_indexes, map_index);
84 map_index_result[0] = map_index;
88 if (mi == GID_LOOKUP_MISS)
90 clib_warning("eid %U not found in the eid-table", format_ip_address,
92 return VNET_API_ERROR_INVALID_VALUE;
95 /* clear locator-set to eids binding */
96 eid_indexes = vec_elt_at_index(lcm->locator_set_to_eids,
97 a->locator_set_index);
98 for (i = 0; i < vec_len(eid_indexes[0]); i++)
100 map_indexp = vec_elt_at_index(eid_indexes[0], i);
101 if (map_indexp[0] == mi)
104 vec_del1(eid_indexes[0], i);
106 /* remove local mark if needed */
107 m = pool_elt_at_index(lcm->mapping_pool, mi);
111 for (k = 0; k < vec_len(lcm->local_mappings_indexes); k++)
113 lm_indexp = vec_elt_at_index(lcm->local_mappings_indexes, k);
114 if (lm_indexp[0] == mi)
117 vec_del1(lcm->local_mappings_indexes, k);
121 /* remove tunnel ??? */
124 /* remove mapping from dictionary */
125 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->deid, 0, 0);
126 pool_put_index (lcm->mapping_pool, mi);
132 /* Stores mapping in map-cache and programs data plane for local mappings. */
134 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
135 u32 * map_index_result)
137 uword * table_id, * refc;
139 vnet_lisp_gpe_add_del_iface_args_t _ai, *ai = &_ai;
140 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
142 vni = gid_address_vni(&a->deid);
144 /* store/remove mapping from map-cache */
145 rv = vnet_lisp_add_del_mapping (a, map_index_result);
149 table_id = hash_get(lcm->table_id_by_vni, vni);
153 clib_warning ("vni %d not associated to a vrf!", vni);
154 return VNET_API_ERROR_INVALID_VALUE;
157 refc = hash_get(lcm->dp_if_refcount_by_vni, vni);
159 /* enable/disable data-plane interface */
162 /* create interface or update refcount */
167 ai->table_id = table_id[0];
168 vnet_lisp_gpe_add_del_iface (ai, 0);
170 /* counts the number of eids in a vni that use the interface */
171 hash_set(lcm->dp_if_refcount_by_vni, vni, 1);
180 /* since this is a remove for an existing eid, the iface should exist */
184 /* remove iface if needed */
189 ai->table_id = table_id[0];
190 vnet_lisp_gpe_add_del_iface (ai, 0);
191 hash_unset (lcm->dp_if_refcount_by_vni, vni);
198 static clib_error_t *
199 lisp_add_del_local_eid_command_fn (vlib_main_t * vm, unformat_input_t * input,
200 vlib_cli_command_t * cmd)
202 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
203 unformat_input_t _line_input, * line_input = &_line_input;
206 ip_prefix_t * prefp = &gid_address_ippref(&eid);
207 gid_address_t * eids = 0;
208 clib_error_t * error = 0;
209 u8 * locator_set_name = 0;
210 u32 locator_set_index = 0, map_index = 0;
212 vnet_lisp_add_del_mapping_args_t _a, * a = &_a;
214 gid_address_type (&eid) = GID_ADDR_IP_PREFIX;
216 /* Get a line of input. */
217 if (! unformat_user (input, unformat_line_input, line_input))
220 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
222 if (unformat (line_input, "add"))
224 else if (unformat (line_input, "del"))
226 else if (unformat (line_input, "eid %U", unformat_ip_prefix, prefp))
230 else if (unformat (line_input, "locator-set %_%v%_", &locator_set_name))
232 p = hash_get_mem(lcm->locator_set_index_by_name, locator_set_name);
235 error = clib_error_return(0, "locator-set %s doesn't exist",
239 locator_set_index = p[0];
243 error = unformat_parse_error(line_input);
248 /* XXX treat batch configuration */
251 a->locator_set_index = locator_set_index;
254 vnet_lisp_add_del_local_mapping (a, &map_index);
257 if (locator_set_name)
258 vec_free (locator_set_name);
262 VLIB_CLI_COMMAND (lisp_add_del_local_eid_command) = {
263 .path = "lisp eid-table",
264 .short_help = "lisp eid-table add/del eid <eid> locator-set <locator-set>",
265 .function = lisp_add_del_local_eid_command_fn,
269 lisp_add_del_negative_static_mapping (gid_address_t * deid,
270 vnet_lisp_add_del_locator_set_args_t * ls, u8 action, u8 is_add)
275 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
277 vnet_lisp_add_del_mapping_args_t _dm_args, * dm_args = &_dm_args;
279 u32 ls_index = 0, dst_map_index;
280 vnet_lisp_gpe_add_del_iface_args_t _ai, *ai = &_ai;
282 memset (dm_args, 0, sizeof (dm_args[0]));
283 u32 vni = gid_address_vni (deid);
284 refc = hash_get (lcm->dp_if_refcount_by_vni, vni);
286 p = hash_get (lcm->table_id_by_vni, vni);
289 clib_warning ("vni %d not associated to a vrf!", vni);
290 return VNET_API_ERROR_INVALID_VALUE;
295 vnet_lisp_add_del_locator_set (ls, &ls_index);
297 gid_address_copy (&dm_args->deid, deid);
299 dm_args->action = action;
300 dm_args->locator_set_index = ls_index;
302 /* create interface or update refcount */
305 vnet_lisp_gpe_add_del_iface_args_t _ai, *ai = &_ai;
309 vnet_lisp_gpe_add_del_iface (ai, 0);
311 /* counts the number of eids in a vni that use the interface */
312 hash_set (lcm->dp_if_refcount_by_vni, vni, 1);
317 rv = vnet_lisp_add_del_local_mapping (dm_args, &dst_map_index);
319 add_fwd_entry (lcm, lcm->pitr_map_index, dst_map_index);
323 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, deid);
326 clib_warning ("eid %U marked for removal, but not found in "
327 "map-cache!", unformat_gid_address, deid);
328 return VNET_API_ERROR_INVALID_VALUE;
331 /* delete forwarding entry */
332 del_fwd_entry (lcm, 0, mi);
335 gid_address_copy (&dm_args->deid, deid);
336 map = pool_elt_at_index (lcm->mapping_pool, mi);
337 dm_args->locator_set_index = map->locator_set_index;
339 /* delete mapping associated to fwd entry */
340 vnet_lisp_add_del_mapping (dm_args, 0);
342 refc = hash_get (lcm->dp_if_refcount_by_vni, vni);
346 /* remove iface if needed */
352 vnet_lisp_gpe_add_del_iface (ai, 0);
353 hash_unset (lcm->dp_if_refcount_by_vni, vni);
360 * Adds/removes/updates static remote mapping.
362 * This function also modifies forwarding entries if needed.
364 * @param deid destination EID
365 * @param seid source EID
366 * @param rlocs vector of remote locators
367 * @param action action for negative map-reply
368 * @param is_add add mapping if non-zero, delete otherwise
369 * @return return code
372 vnet_lisp_add_del_remote_mapping (gid_address_t * deid, gid_address_t * seid,
373 ip_address_t * rlocs, u8 action, u8 is_add)
375 vnet_lisp_add_del_mapping_args_t _dm_args, * dm_args = &_dm_args;
376 vnet_lisp_add_del_mapping_args_t _sm_args, * sm_args = &_sm_args;
377 vnet_lisp_add_del_locator_set_args_t _ls, * ls = &_ls;
378 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
379 u32 mi, ls_index = 0, dst_map_index, src_map_index;
384 memset (sm_args, 0, sizeof (sm_args[0]));
385 memset (dm_args, 0, sizeof (dm_args[0]));
386 memset (ls, 0, sizeof (ls[0]));
388 /* prepare remote locator set */
389 vec_foreach (dl, rlocs)
391 memset (&loc, 0, sizeof (loc));
392 gid_address_ip (&loc.address) = dl[0];
393 vec_add1 (ls->locators, loc);
395 src_map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
397 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, deid);
404 /* process a negative mapping */
405 if (0 == vec_len (rlocs))
406 return lisp_add_del_negative_static_mapping (deid, ls,
409 if ((u32)~0 == src_map_index)
411 clib_warning ("seid %U not found!", format_gid_address, seid);
417 clib_warning ("deid %U marked for removal but not "
418 "found!", format_gid_address, deid);
422 vnet_lisp_add_del_locator_set (ls, &ls_index);
425 gid_address_copy (&dm_args->deid, deid);
427 dm_args->action = action;
428 dm_args->locator_set_index = ls_index;
429 vnet_lisp_add_del_mapping (dm_args, &dst_map_index);
432 add_fwd_entry (lcm, src_map_index, dst_map_index);
439 /* delete forwarding entry */
440 del_fwd_entry (lcm, 0, mi);
442 gid_address_copy (&dm_args->deid, deid);
443 mapping_t * map = pool_elt_at_index (lcm->mapping_pool, mi);
444 dm_args->locator_set_index = map->locator_set_index;
446 /* delete mapping associated to fwd entry */
447 vnet_lisp_add_del_mapping (dm_args, 0);
450 ls->index = map->locator_set_index;
451 /* delete locator set */
452 vnet_lisp_add_del_locator_set (ls, 0);
454 /* update existing locator set */
457 if ((u32)~0 == src_map_index)
459 clib_warning ("seid %U not found!", format_gid_address, seid);
464 locator_set_t * old_ls;
465 old_map = pool_elt_at_index (lcm->mapping_pool, mi);
467 /* update mapping attributes */
468 old_map->action = action;
470 old_ls = pool_elt_at_index(lcm->locator_set_pool,
471 old_map->locator_set_index);
472 if (compare_locators (lcm, old_ls->locator_indices,
475 /* set locator-set index to overwrite */
477 ls->index = old_map->locator_set_index;
478 vnet_lisp_add_del_locator_set (ls, 0);
479 add_fwd_entry (lcm, src_map_index, mi);
486 vec_free (ls->locators);
491 * Handler for add/del remote mapping CLI.
493 * @param vm vlib context
494 * @param input input from user
496 * @return pointer to clib error structure
498 static clib_error_t *
499 lisp_add_del_remote_mapping_command_fn (vlib_main_t * vm,
500 unformat_input_t * input,
501 vlib_cli_command_t * cmd)
503 clib_error_t * error = 0;
504 unformat_input_t _line_input, * line_input = &_line_input;
506 ip_address_t rloc, * rlocs = 0;
507 ip_prefix_t * deid_ippref, * seid_ippref;
508 gid_address_t seid, deid;
511 u32 vni, action = ~0;
513 /* Get a line of input. */
514 if (! unformat_user (input, unformat_line_input, line_input))
517 memset (&deid, 0, sizeof (deid));
518 memset (&seid, 0, sizeof (seid));
520 seid_ippref = &gid_address_ippref(&seid);
521 deid_ippref = &gid_address_ippref(&deid);
523 gid_address_type (&deid) = GID_ADDR_IP_PREFIX;
524 gid_address_type (&seid) = GID_ADDR_IP_PREFIX;
526 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
528 if (unformat (line_input, "del"))
530 if (unformat (line_input, "add"))
532 else if (unformat (line_input, "deid %U",
533 unformat_ip_prefix, deid_ippref))
537 else if (unformat (line_input, "vni %u", &vni))
539 gid_address_set_vni (&seid, vni);
540 gid_address_set_vni (&deid, vni);
542 else if (unformat (line_input, "seid %U",
543 unformat_ip_prefix, seid_ippref))
545 else if (unformat (line_input, "rloc %U", unformat_ip_address, &rloc))
546 vec_add1 (rlocs, rloc);
547 else if (unformat (line_input, "action %s", &s))
549 if (!strcmp ((char *)s, "no-action"))
550 action = ACTION_NONE;
551 if (!strcmp ((char *)s, "natively-forward"))
552 action = ACTION_NATIVELY_FORWARDED;
553 if (!strcmp ((char *)s, "send-map-request"))
554 action = ACTION_SEND_MAP_REQUEST;
555 else if (!strcmp ((char *)s, "drop"))
556 action = ACTION_DROP;
559 clib_warning ("invalid action: '%s'", s);
565 clib_warning ("parse error");
572 clib_warning ("missing deid!");
577 && (ip_prefix_version (deid_ippref)
578 != ip_prefix_version (seid_ippref)))
580 clib_warning ("source and destination EIDs are not"
581 " in the same IP family!");
585 if (is_add && (~0 == action)
586 && 0 == vec_len (rlocs))
588 clib_warning ("no action set for negative map-reply!");
592 int rv = vnet_lisp_add_del_remote_mapping (&deid, &seid, rlocs,
595 clib_warning ("failed to %s remote mapping!",
596 is_add ? "add" : "delete");
599 unformat_free (line_input);
605 VLIB_CLI_COMMAND (lisp_add_del_remote_mapping_command) = {
606 .path = "lisp remote-mapping",
607 .short_help = "lisp remote-mapping add|del vni <vni>"
608 "deid <dest-eid> seid <src-eid> [action <no-action|natively-forward|"
609 "send-map-request|drop>] rloc <dst-locator> [rloc <dst-locator> ... ]",
610 .function = lisp_add_del_remote_mapping_command_fn,
613 static clib_error_t *
614 lisp_show_map_resolvers_command_fn (vlib_main_t * vm,
615 unformat_input_t * input,
616 vlib_cli_command_t * cmd)
619 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
621 vec_foreach (addr, lcm->map_resolvers)
623 vlib_cli_output (vm, "%U", format_ip_address, addr);
628 VLIB_CLI_COMMAND (lisp_show_map_resolvers_command) = {
629 .path = "show lisp map-resolvers",
630 .short_help = "show lisp map-resolvers",
631 .function = lisp_show_map_resolvers_command_fn,
635 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
637 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
638 u32 locator_set_index = ~0;
642 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
645 clib_warning ("locator-set %v doesn't exist", locator_set_name);
648 locator_set_index = p[0];
652 pool_get (lcm->mapping_pool, m);
653 m->locator_set_index = locator_set_index;
655 lcm->pitr_map_index = m - lcm->mapping_pool;
657 /* enable pitr mode */
662 /* remove pitr mapping */
663 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
665 /* disable pitr mode */
671 static clib_error_t *
672 lisp_pitr_set_locator_set_command_fn (vlib_main_t * vm,
673 unformat_input_t * input,
674 vlib_cli_command_t * cmd)
676 u8 locator_name_set = 0;
677 u8 * locator_set_name = 0;
679 unformat_input_t _line_input, * line_input = &_line_input;
681 /* Get a line of input. */
682 if (! unformat_user (input, unformat_line_input, line_input))
685 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
687 if (unformat (line_input, "ls %_%v%_", &locator_set_name))
688 locator_name_set = 1;
689 else if (unformat (line_input, "disable"))
692 return clib_error_return (0, "parse error");
695 if (!locator_name_set)
697 clib_warning ("No locator set specified!");
700 vnet_lisp_pitr_set_locator_set (locator_set_name, is_add);
703 if (locator_set_name)
704 vec_free (locator_set_name);
708 VLIB_CLI_COMMAND (lisp_pitr_set_locator_set_command) = {
710 .short_help = "lisp pitr [disable] ls <locator-set-name>",
711 .function = lisp_pitr_set_locator_set_command_fn,
714 static clib_error_t *
715 lisp_show_local_eid_table_command_fn (vlib_main_t * vm,
716 unformat_input_t * input,
717 vlib_cli_command_t * cmd)
719 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
722 vlib_cli_output (vm, "%=20s%=16s", "EID", "Locator");
723 pool_foreach (mapit, lcm->mapping_pool,
726 locator_set_t * ls = pool_elt_at_index (lcm->locator_set_pool,
727 mapit->locator_set_index);
728 vlib_cli_output (vm, "%-16U%16v", format_gid_address, &mapit->eid,
736 VLIB_CLI_COMMAND (lisp_cp_show_local_eid_table_command) = {
737 .path = "show lisp eid-table",
738 .short_help = "Shows local EID table",
739 .function = lisp_show_local_eid_table_command_fn,
742 /* cleans locator to locator-set data and removes locators not part of
745 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
747 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
748 locator_set_t * ls = pool_elt_at_index(lcm->locator_set_pool, lsi);
749 for (i = 0; i < vec_len(ls->locator_indices); i++)
751 loc_indexp = vec_elt_at_index(ls->locator_indices, i);
752 ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
754 for (j = 0; j < vec_len(ls_indexes[0]); j++)
756 ls_indexp = vec_elt_at_index(ls_indexes[0], j);
757 if (ls_indexp[0] == lsi)
761 /* delete index for removed locator-set*/
762 vec_del1(ls_indexes[0], j);
764 /* delete locator if it's part of no locator-set */
765 if (vec_len (ls_indexes[0]) == 0)
767 pool_put_index (lcm->locator_pool, loc_indexp[0]);
768 vec_add1 (to_be_deleted, i);
774 for (i = 0; i < vec_len (to_be_deleted); i++)
776 loc_indexp = vec_elt_at_index (to_be_deleted, i);
777 vec_del1 (ls->locator_indices, loc_indexp[0]);
779 vec_free (to_be_deleted);
784 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
787 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
789 locator_t * loc, * itloc;
790 uword _p = (u32)~0, * p = &_p;
791 u32 loc_index, ls_index, ** ls_indexes;
796 /* check if overwrite */
798 p = hash_get_mem(lcm->locator_set_index_by_name, a->name);
803 if (p && p[0] != (u32)~0)
805 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
808 clib_warning("locator-set %d to be overwritten doesn't exist!",
813 /* clean locator to locator-set vectors and remove locators if
814 * they're not part of another locator-set */
815 clean_locator_to_locator_set (lcm, p[0]);
817 /* remove locator indices from locator set */
818 vec_free(ls->locator_indices);
825 /* new locator-set */
828 pool_get(lcm->locator_set_pool, ls);
829 ls_index = ls - lcm->locator_set_pool;
833 ls->name = vec_dup(a->name);
835 if (!lcm->locator_set_index_by_name)
836 lcm->locator_set_index_by_name = hash_create_vec(
837 /* size */0, sizeof(ls->name[0]), sizeof(uword));
838 hash_set_mem(lcm->locator_set_index_by_name, ls->name, ls_index);
840 /* mark as local locator-set */
841 vec_add1(lcm->local_locator_set_indexes, ls_index);
843 ls->local = a->local;
845 ls_result[0] = ls_index;
848 /* allocate locators */
849 vec_foreach (itloc, a->locators)
851 pool_get(lcm->locator_pool, loc);
853 loc_index = loc - lcm->locator_pool;
855 vec_add1(ls->locator_indices, loc_index);
857 vec_validate (lcm->locator_to_locator_sets, loc_index);
858 ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
860 vec_add1(ls_indexes[0], ls_index);
865 /* find locator-set */
868 p = hash_get_mem(lcm->locator_set_index_by_name, a->name);
871 clib_warning("locator-set %v doesn't exists", a->name);
878 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
881 clib_warning("locator-set with index %d doesn't exists", p[0]);
884 // /* XXX what happens when a mapping is configured to use the loc-set ? */
885 // if (vec_len (vec_elt_at_index(lcm->locator_set_to_eids, p[0])) != 0)
887 // clib_warning ("Can't delete a locator that supports a mapping!");
891 if (vec_len(lcm->locator_set_to_eids) != 0)
893 eid_indexes = vec_elt_at_index(lcm->locator_set_to_eids, p[0]);
894 if (vec_len(eid_indexes[0]) != 0)
896 clib_warning ("Can't delete a locator that supports a mapping!");
901 /* clean locator to locator-sets data */
902 clean_locator_to_locator_set (lcm, p[0]);
908 vec_foreach_index(it, lcm->local_locator_set_indexes)
910 lsi = vec_elt(lcm->local_locator_set_indexes, it);
913 vec_del1(lcm->local_locator_set_indexes, it);
917 hash_unset_mem(lcm->locator_set_index_by_name, ls->name);
920 pool_put(lcm->locator_set_pool, ls);
926 uword *vnet_lisp_get_locator(vnet_lisp_add_del_locator_set_args_t * a,
929 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
934 /* find locator-set */
937 p = hash_get_mem(lcm->locator_set_index_by_name, a->name);
948 vnet_lisp_add_del_locator_set_name (vnet_lisp_add_del_locator_set_args_t * a,
951 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
953 uword _p = (u32)~0, * p = &_p;
955 u32 **eid_indexes = NULL;
958 ASSERT(ls_result != NULL);
960 p = vnet_lisp_get_locator(a, p);
965 if (p && p[0] != (u32)~0)
967 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
970 clib_warning("locator-set %d to be overwritten doesn't exist!",
972 return VNET_API_ERROR_UNSPECIFIED;
975 /* clean locator to locator-set vectors and remove locators if
976 * they're not part of another locator-set */
977 clean_locator_to_locator_set (lcm, p[0]);
979 /* remove locator indices from locator set */
980 vec_free(ls->locator_indices);
987 /* new locator-set */
990 pool_get(lcm->locator_set_pool, ls);
991 ls_index = ls - lcm->locator_set_pool;
995 ls->name = vec_dup(a->name);
997 if (!lcm->locator_set_index_by_name)
998 lcm->locator_set_index_by_name = hash_create_vec(
999 /* size */0, sizeof(ls->name[0]), sizeof(uword));
1000 hash_set_mem(lcm->locator_set_index_by_name, ls->name, ls_index);
1002 /* mark as local locator-set */
1003 vec_add1(lcm->local_locator_set_indexes, ls_index);
1005 ls->local = a->local;
1006 ls->locator_indices = NULL;
1008 ls_result[0] = ls_index;
1015 clib_warning("locator-set %v doesn't exists", a->name);
1016 return VNET_API_ERROR_INVALID_ARGUMENT;
1019 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
1022 clib_warning("locator-set with index %d doesn't exists", p[0]);
1023 return VNET_API_ERROR_INVALID_ARGUMENT;
1026 if (vec_len(lcm->locator_set_to_eids) != 0)
1028 eid_indexes = vec_elt_at_index(lcm->locator_set_to_eids, p[0]);
1029 if (vec_len(eid_indexes[0]) != 0)
1031 clib_warning ("Can't delete a locator that supports a mapping!");
1036 /* clean locator to locator-sets data */
1037 clean_locator_to_locator_set (lcm, p[0]);
1043 vec_foreach_index(it, lcm->local_locator_set_indexes)
1045 lsi = vec_elt(lcm->local_locator_set_indexes, it);
1048 vec_del1(lcm->local_locator_set_indexes, it);
1052 hash_unset_mem(lcm->locator_set_index_by_name, ls->name);
1055 pool_put(lcm->locator_set_pool, ls);
1061 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t *a,
1064 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
1065 locator_set_t *ls = NULL;
1066 locator_t *loc = NULL, *itloc = NULL;
1067 uword _p = (u32)~0, * p = &_p;
1068 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1072 ASSERT(ls_result != NULL);
1074 p = vnet_lisp_get_locator(a, p);
1076 clib_warning("locator-set %v doesn't exists", a->name);
1077 return VNET_API_ERROR_INVALID_ARGUMENT;
1084 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
1087 clib_warning("locator-set %d to be overwritten doesn't exist!",
1089 return VNET_API_ERROR_INVALID_ARGUMENT;
1093 ls_result[0] = p[0];
1095 /* allocate locators */
1096 itloc = a->locators;
1097 pool_get(lcm->locator_pool, loc);
1099 loc_index = loc - lcm->locator_pool;
1101 vec_add1(ls->locator_indices, loc_index);
1103 vec_validate (lcm->locator_to_locator_sets, loc_index);
1104 ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
1106 vec_add1(ls_indexes[0], ls_index);
1110 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
1113 clib_warning("locator-set with index %d doesn't exists", p[0]);
1114 return VNET_API_ERROR_INVALID_ARGUMENT;
1119 itloc = a->locators;
1121 vec_foreach (locit, ls->locator_indices)
1123 loc = pool_elt_at_index(lcm->locator_pool, locit[0]);
1124 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1126 ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
1128 pool_put_index(lcm->locator_pool, locit[0]);
1129 vec_del1(ls->locator_indices, i);
1130 vec_del1(ls_indexes[0], ls_index);
1140 vnet_lisp_enable_disable (u8 is_enabled)
1142 vnet_lisp_gpe_add_del_iface_args_t _ai, * ai= &_ai;
1143 uword * table_id, * refc;
1145 clib_error_t * error = 0;
1146 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
1147 vnet_lisp_gpe_enable_disable_args_t _a, * a = &_a;
1149 a->is_en = is_enabled;
1150 error = vnet_lisp_gpe_enable_disable (a);
1153 return clib_error_return (0, "failed to %s data-plane!",
1154 a->is_en ? "enable" : "disable");
1159 /* enable all ifaces */
1160 for (i = 0; i < vec_len (lcm->local_mappings_indexes); i++)
1162 mapping_t * m = vec_elt_at_index (lcm->mapping_pool, i);
1164 ai->vni = gid_address_vni (&m->eid);
1166 refc = hash_get (lcm->dp_if_refcount_by_vni, ai->vni);
1169 table_id = hash_get (lcm->table_id_by_vni, ai->vni);
1172 ai->table_id = table_id[0];
1173 /* enables interface and adds defaults */
1174 vnet_lisp_gpe_add_del_iface (ai, 0);
1177 return clib_error_return (0, "no table_id found for vni %u!",
1180 hash_set (lcm->dp_if_refcount_by_vni, ai->vni, 1);
1190 /* clear refcount table */
1191 hash_free (lcm->dp_if_refcount_by_vni);
1192 hash_free (lcm->fwd_entry_by_mapping_index);
1193 pool_free (lcm->fwd_entry_pool);
1196 /* update global flag */
1197 lcm->is_enabled = is_enabled;
1202 static clib_error_t *
1203 lisp_enable_disable_command_fn (vlib_main_t * vm, unformat_input_t * input,
1204 vlib_cli_command_t * cmd)
1206 unformat_input_t _line_input, * line_input = &_line_input;
1210 /* Get a line of input. */
1211 if (! unformat_user (input, unformat_line_input, line_input))
1214 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1216 if (unformat (line_input, "enable"))
1221 else if (unformat (line_input, "disable"))
1225 return clib_error_return (0, "parse error: '%U'",
1226 format_unformat_error, line_input);
1231 return clib_error_return (0, "state not set");
1233 return vnet_lisp_enable_disable (is_enabled);
1236 VLIB_CLI_COMMAND (lisp_cp_enable_disable_command) = {
1238 .short_help = "lisp [enable|disable]",
1239 .function = lisp_enable_disable_command_fn,
1243 vnet_lisp_enable_disable_status (void)
1245 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
1246 return lcm->is_enabled;
1250 format_lisp_status (u8 * s, va_list * args)
1252 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
1253 return format (s, "%s", lcm->is_enabled ? "enabled" : "disabled");
1256 static clib_error_t *
1257 lisp_show_status_command_fn (vlib_main_t * vm, unformat_input_t * input,
1258 vlib_cli_command_t * cmd)
1261 msg = format (msg, "feature: %U\ngpe: %U\n",
1262 format_lisp_status, format_vnet_lisp_gpe_status);
1263 vlib_cli_output (vm, "%v", msg);
1268 VLIB_CLI_COMMAND (lisp_show_status_command) = {
1269 .path = "show lisp status",
1270 .short_help = "show lisp status",
1271 .function = lisp_show_status_command_fn,
1273 static clib_error_t *
1274 lisp_add_del_locator_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
1275 vlib_cli_command_t * cmd)
1277 lisp_gpe_main_t * lgm = &lisp_gpe_main;
1278 vnet_main_t * vnm = lgm->vnet_main;
1279 unformat_input_t _line_input, * line_input = &_line_input;
1281 clib_error_t * error = 0;
1282 u8 * locator_set_name = 0;
1283 locator_t locator, * locators = 0;
1284 vnet_lisp_add_del_locator_set_args_t _a, * a = &_a;
1287 memset(&locator, 0, sizeof(locator));
1288 memset(a, 0, sizeof(a[0]));
1290 /* Get a line of input. */
1291 if (! unformat_user (input, unformat_line_input, line_input))
1294 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1296 if (unformat (line_input, "add %_%v%_", &locator_set_name))
1298 else if (unformat (line_input, "del %_%v%_", &locator_set_name))
1300 else if (unformat (line_input, "iface %U p %d w %d",
1301 unformat_vnet_sw_interface, vnm, &locator.sw_if_index,
1302 &locator.priority, &locator.weight))
1305 vec_add1(locators, locator);
1309 error = unformat_parse_error(line_input);
1314 a->name = locator_set_name;
1315 a->locators = locators;
1319 vnet_lisp_add_del_locator_set(a, &ls_index);
1323 if (locator_set_name)
1324 vec_free (locator_set_name);
1328 VLIB_CLI_COMMAND (lisp_cp_add_del_locator_set_command) = {
1329 .path = "lisp locator-set",
1330 .short_help = "lisp locator-set add/del <name> iface <iface-name> "
1331 "p <priority> w <weight>",
1332 .function = lisp_add_del_locator_set_command_fn,
1335 static clib_error_t *
1336 lisp_cp_show_locator_sets_command_fn (vlib_main_t * vm,
1337 unformat_input_t * input,
1338 vlib_cli_command_t * cmd)
1340 locator_set_t * lsit;
1343 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
1345 vlib_cli_output (vm, "%=20s%=16s%=16s%=16s", "Locator-set", "Locator",
1346 "Priority", "Weight");
1347 pool_foreach (lsit, lcm->locator_set_pool,
1350 msg = format (msg, "%-16v", lsit->name);
1351 vec_foreach (locit, lsit->locator_indices)
1353 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1355 msg = format (msg, "%16d%16d%16d", loc->sw_if_index, loc->priority,
1358 msg = format (msg, "%16U%16d%16d", format_gid_address, &loc->address,
1359 loc->priority, loc->weight);
1361 vlib_cli_output (vm, "%v", msg);
1367 VLIB_CLI_COMMAND (lisp_cp_show_locator_sets_command) = {
1368 .path = "show lisp locator-set",
1369 .short_help = "Shows locator-sets",
1370 .function = lisp_cp_show_locator_sets_command_fn,
1374 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
1376 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
1377 ip_address_t * addr;
1382 vec_foreach(addr, lcm->map_resolvers)
1384 if (!ip_address_cmp (addr, &a->address))
1386 clib_warning("map-resolver %U already exists!", format_ip_address,
1391 vec_add1(lcm->map_resolvers, a->address);
1395 for (i = 0; i < vec_len(lcm->map_resolvers); i++)
1397 addr = vec_elt_at_index(lcm->map_resolvers, i);
1398 if (!ip_address_cmp (addr, &a->address))
1400 vec_delete(lcm->map_resolvers, 1, i);
1408 static clib_error_t *
1409 lisp_add_del_map_resolver_command_fn (vlib_main_t * vm,
1410 unformat_input_t * input,
1411 vlib_cli_command_t * cmd)
1413 unformat_input_t _line_input, * line_input = &_line_input;
1415 ip_address_t ip_addr;
1416 clib_error_t * error = 0;
1417 vnet_lisp_add_del_map_resolver_args_t _a, * a = &_a;
1419 /* Get a line of input. */
1420 if (! unformat_user (input, unformat_line_input, line_input))
1423 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1425 if (unformat (line_input, "add"))
1427 else if (unformat (line_input, "del"))
1429 else if (unformat (line_input, "%U", unformat_ip_address, &ip_addr))
1433 error = unformat_parse_error(line_input);
1438 a->address = ip_addr;
1439 vnet_lisp_add_del_map_resolver (a);
1445 VLIB_CLI_COMMAND (lisp_add_del_map_resolver_command) = {
1446 .path = "lisp map-resolver",
1447 .short_help = "lisp map-resolver add/del <ip_address>",
1448 .function = lisp_add_del_map_resolver_command_fn,
1451 /* Statistics (not really errors) */
1452 #define foreach_lisp_cp_lookup_error \
1454 _(MAP_REQUESTS_SENT, "map-request sent")
1456 static char * lisp_cp_lookup_error_strings[] = {
1457 #define _(sym,string) string,
1458 foreach_lisp_cp_lookup_error
1464 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
1465 foreach_lisp_cp_lookup_error
1467 LISP_CP_LOOKUP_N_ERROR,
1468 } lisp_cp_lookup_error_t;
1472 LISP_CP_LOOKUP_NEXT_DROP,
1473 LISP_CP_LOOKUP_NEXT_IP4_LOOKUP,
1474 LISP_CP_LOOKUP_NEXT_IP6_LOOKUP,
1475 LISP_CP_LOOKUP_N_NEXT,
1476 } lisp_cp_lookup_next_t;
1480 gid_address_t dst_eid;
1481 ip_address_t map_resolver_ip;
1482 } lisp_cp_lookup_trace_t;
1485 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
1487 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1488 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1489 lisp_cp_lookup_trace_t * t = va_arg (*args, lisp_cp_lookup_trace_t *);
1491 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
1492 format_ip_address, &t->map_resolver_ip, format_gid_address,
1498 ip_fib_lookup_with_table (lisp_cp_main_t * lcm, u32 fib_index,
1501 if (ip_addr_version (dst) == IP4)
1502 return ip4_fib_lookup_with_table (lcm->im4, fib_index, &ip_addr_v4(dst),
1505 return ip6_fib_lookup_with_table (lcm->im6, fib_index, &ip_addr_v6(dst));
1509 get_mr_and_local_iface_ip (lisp_cp_main_t *lcm, ip_address_t * mr_ip,
1510 ip_address_t * sloc)
1513 ip_adjacency_t * adj;
1514 ip_interface_address_t * ia = 0;
1515 ip_lookup_main_t * lm;
1516 ip4_address_t * l4 = 0;
1517 ip6_address_t * l6 = 0;
1518 ip_address_t * mrit;
1520 if (vec_len(lcm->map_resolvers) == 0)
1522 clib_warning("No map-resolver configured");
1526 /* find the first mr ip we have a route to and the ip of the
1527 * iface that has a route to it */
1528 vec_foreach(mrit, lcm->map_resolvers)
1530 lm = ip_addr_version (mrit) == IP4 ?
1531 &lcm->im4->lookup_main : &lcm->im6->lookup_main;
1533 adj_index = ip_fib_lookup_with_table (lcm, 0, mrit);
1534 adj = ip_get_adjacency (lm, adj_index);
1539 if (adj->lookup_next_index == IP_LOOKUP_NEXT_ARP)
1541 ia = pool_elt_at_index(lm->if_address_pool, adj->if_address_index);
1542 if (ip_addr_version(mrit) == IP4)
1544 l4 = ip_interface_address_get_address (lm, ia);
1548 l6 = ip_interface_address_get_address (lm, ia);
1551 else if (adj->lookup_next_index == IP_LOOKUP_NEXT_REWRITE)
1553 /* find sw_if_index in rewrite header */
1554 u32 sw_if_index = adj->rewrite_header.sw_if_index;
1556 /* find suitable address */
1557 if (ip_addr_version(mrit) == IP4)
1559 /* find the first ip address */
1560 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1561 sw_if_index, 1 /* unnumbered */,
1563 l4 = ip_interface_address_get_address (&lcm->im4->lookup_main,
1570 /* find the first ip address */
1571 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1572 sw_if_index, 1 /* unnumbered */,
1574 l6 = ip_interface_address_get_address (&lcm->im6->lookup_main,
1583 ip_addr_v4(sloc).as_u32 = l4->as_u32;
1584 ip_addr_version(sloc) = IP4;
1585 ip_address_copy(mr_ip, mrit);
1590 clib_memcpy (&ip_addr_v6(sloc), l6, sizeof(*l6));
1591 ip_addr_version(sloc) = IP6;
1592 ip_address_copy(mr_ip, mrit);
1597 clib_warning("Can't find map-resolver and local interface ip!");
1601 static gid_address_t *
1602 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
1609 ip_interface_address_t * ia = 0;
1610 gid_address_t gid_data, * gid = &gid_data;
1611 gid_address_t * rlocs = 0;
1612 ip_prefix_t * ippref = &gid_address_ippref (gid);
1613 ip_address_t * rloc = &ip_prefix_addr (ippref);
1615 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
1616 for (i = 0; i < vec_len(loc_set->locator_indices); i++)
1618 loc_indexp = vec_elt_at_index(loc_set->locator_indices, i);
1619 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
1621 ip_addr_version(rloc) = IP4;
1622 /* Add ipv4 locators first TODO sort them */
1623 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1624 loc->sw_if_index, 1 /* unnumbered */,
1626 l4 = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
1627 ip_addr_v4 (rloc) = l4[0];
1628 ip_prefix_len (ippref) = 32;
1629 vec_add1 (rlocs, gid[0]);
1632 ip_addr_version(rloc) = IP6;
1633 /* Add ipv6 locators */
1634 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1635 loc->sw_if_index, 1 /* unnumbered */,
1637 l6 = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
1638 ip_addr_v6 (rloc) = l6[0];
1639 ip_prefix_len (ippref) = 128;
1640 vec_add1 (rlocs, gid[0]);
1646 static vlib_buffer_t *
1647 build_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm,
1648 gid_address_t * seid, gid_address_t * deid,
1649 locator_set_t * loc_set, ip_address_t * mr_ip,
1650 ip_address_t * sloc, u8 is_smr_invoked,
1651 u64 *nonce_res, u32 * bi_res)
1655 gid_address_t * rlocs = 0;
1657 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
1659 clib_warning ("Can't allocate buffer for Map-Request!");
1663 b = vlib_get_buffer (vm, bi);
1665 /* leave some space for the encap headers */
1666 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
1669 rlocs = build_itr_rloc_list (lcm, loc_set);
1672 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked, nonce_res);
1674 /* push ecm: udp-ip-lisp */
1675 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
1677 /* push outer ip header */
1678 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
1689 send_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm,
1690 gid_address_t * seid, gid_address_t * deid,
1693 u32 next_index, bi = 0, * to_next, map_index;
1697 locator_set_t * loc_set;
1699 pending_map_request_t * pmr;
1700 ip_address_t mr_ip, sloc;
1702 /* get locator-set for seid */
1703 if (!lcm->lisp_pitr)
1705 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
1706 if (map_index == ~0)
1708 clib_warning("No local mapping found in eid-table for %U!",
1709 format_gid_address, seid);
1713 map = pool_elt_at_index (lcm->mapping_pool, map_index);
1717 clib_warning("Mapping found for src eid %U is not marked as local!",
1718 format_gid_address, seid);
1724 map_index = lcm->pitr_map_index;
1725 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
1728 loc_set = pool_elt_at_index (lcm->locator_set_pool, map->locator_set_index);
1730 /* get local iface ip to use in map-request XXX fib 0 for now*/
1731 get_mr_and_local_iface_ip (lcm, &mr_ip, &sloc);
1733 /* build the encapsulated map request */
1734 b = build_encapsulated_map_request (vm, lcm, seid, deid, loc_set, &mr_ip,
1735 &sloc, is_smr_invoked, &nonce, &bi);
1740 /* set fib index and lookup node */
1741 vnet_buffer(b)->sw_if_index[VLIB_TX] = ~0;
1742 next_index = (ip_addr_version(&mr_ip) == IP4) ?
1743 ip4_lookup_node.index : ip6_lookup_node.index;
1745 f = vlib_get_frame_to_node (vm, next_index);
1747 /* Enqueue the packet */
1748 to_next = vlib_frame_vector_args (f);
1751 vlib_put_frame_to_node (vm, next_index, f);
1753 /* add map-request to pending requests table */
1754 pool_get(lcm->pending_map_requests_pool, pmr);
1755 gid_address_copy (&pmr->src, seid);
1756 gid_address_copy (&pmr->dst, deid);
1757 pmr->src_mapping_index = map_index;
1758 hash_set(lcm->pending_map_requests_by_nonce, nonce,
1759 pmr - lcm->pending_map_requests_pool);
1763 get_src_and_dst (void *hdr, ip_address_t * src, ip_address_t *dst)
1765 ip4_header_t * ip4 = hdr;
1768 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
1770 ip_addr_v4(src).as_u32 = ip4->src_address.as_u32;
1771 ip_addr_version(src) = IP4;
1772 ip_addr_v4(dst).as_u32 = ip4->dst_address.as_u32;
1773 ip_addr_version(dst) = IP4;
1778 clib_memcpy (&ip_addr_v6(src), &ip6->src_address, sizeof(ip6->src_address));
1779 ip_addr_version(src) = IP6;
1780 clib_memcpy (&ip_addr_v6(dst), &ip6->dst_address, sizeof(ip6->dst_address));
1781 ip_addr_version(dst) = IP6;
1786 lisp_cp_lookup (vlib_main_t * vm, vlib_node_runtime_t * node,
1787 vlib_frame_t * from_frame)
1789 u32 * from, * to_next_drop, di, si;
1790 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main();
1791 u32 pkts_mapped = 0;
1792 uword n_left_from, n_left_to_next_drop;
1794 from = vlib_frame_vector_args (from_frame);
1795 n_left_from = from_frame->n_vectors;
1797 while (n_left_from > 0)
1799 vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
1800 to_next_drop, n_left_to_next_drop);
1802 while (n_left_from > 0 && n_left_to_next_drop > 0)
1807 gid_address_t src, dst;
1808 ip_prefix_t * spref, * dpref;
1810 gid_address_type (&src) = GID_ADDR_IP_PREFIX;
1811 spref = &gid_address_ippref(&src);
1812 gid_address_type (&dst) = GID_ADDR_IP_PREFIX;
1813 dpref = &gid_address_ippref(&dst);
1818 to_next_drop[0] = pi0;
1820 n_left_to_next_drop -= 1;
1822 p0 = vlib_get_buffer (vm, pi0);
1823 p0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
1825 /* src/dst eid pair */
1826 ip0 = vlib_buffer_get_current (p0);
1827 get_src_and_dst (ip0, &ip_prefix_addr(spref), &ip_prefix_addr(dpref));
1828 ip_prefix_len(spref) = ip_address_max_len (ip_prefix_version(spref));
1829 ip_prefix_len(dpref) = ip_address_max_len (ip_prefix_version(dpref));
1831 /* if we have remote mapping for destination already in map-chache
1832 add forwarding tunnel directly. If not send a map-request */
1833 di = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
1836 mapping_t * m = vec_elt_at_index (lcm->mapping_pool, di);
1837 /* send a map-request also in case of negative mapping entry
1838 with corresponding action */
1839 if (m->action == ACTION_SEND_MAP_REQUEST)
1841 /* send map-request */
1842 send_encapsulated_map_request (vm, lcm, &src, &dst, 0);
1847 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1851 add_fwd_entry (lcm, si, di);
1857 /* send map-request */
1858 send_encapsulated_map_request (vm, lcm, &src, &dst, 0);
1862 if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED))
1864 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, p0,
1867 memset(tr, 0, sizeof(*tr));
1868 gid_address_copy (&tr->dst_eid, &dst);
1869 if (vec_len(lcm->map_resolvers) > 0)
1871 clib_memcpy (&tr->map_resolver_ip,
1872 vec_elt_at_index(lcm->map_resolvers, 0),
1873 sizeof(ip_address_t));
1878 vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, n_left_to_next_drop);
1880 vlib_node_increment_counter (vm, node->node_index,
1881 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
1883 return from_frame->n_vectors;
1886 VLIB_REGISTER_NODE (lisp_cp_lookup_node) = {
1887 .function = lisp_cp_lookup,
1888 .name = "lisp-cp-lookup",
1889 .vector_size = sizeof (u32),
1890 .format_trace = format_lisp_cp_lookup_trace,
1891 .type = VLIB_NODE_TYPE_INTERNAL,
1893 .n_errors = LISP_CP_LOOKUP_N_ERROR,
1894 .error_strings = lisp_cp_lookup_error_strings,
1896 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
1899 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
1900 [LISP_CP_LOOKUP_NEXT_IP4_LOOKUP] = "ip4-lookup",
1901 [LISP_CP_LOOKUP_NEXT_IP6_LOOKUP] = "ip6-lookup",
1905 /* lisp_cp_input statistics */
1906 #define foreach_lisp_cp_input_error \
1908 _(MAP_REPLIES_RECEIVED, "map-replies received")
1910 static char * lisp_cp_input_error_strings[] = {
1911 #define _(sym,string) string,
1912 foreach_lisp_cp_input_error
1918 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
1919 foreach_lisp_cp_input_error
1921 LISP_CP_INPUT_N_ERROR,
1922 } lisp_cp_input_error_t;
1926 LISP_CP_INPUT_NEXT_DROP,
1927 LISP_CP_INPUT_N_NEXT,
1928 } lisp_cp_input_next_t;
1932 gid_address_t dst_eid;
1933 ip4_address_t map_resolver_ip;
1934 } lisp_cp_input_trace_t;
1937 format_lisp_cp_input_trace (u8 * s, va_list * args)
1939 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1940 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1941 CLIB_UNUSED(lisp_cp_input_trace_t * t) = va_arg (*args, lisp_cp_input_trace_t *);
1943 s = format (s, "LISP-CP-INPUT: TODO");
1947 ip_interface_address_t *
1948 ip_interface_get_first_interface_address (ip_lookup_main_t *lm, u32 sw_if_index,
1951 vnet_main_t *vnm = vnet_get_main ();
1952 vnet_sw_interface_t * swif = vnet_get_sw_interface (vnm, sw_if_index);
1953 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
1954 sw_if_index = swif->unnumbered_sw_if_index;
1956 (vec_len((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
1957 vec_elt((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
1959 return pool_elt_at_index((lm)->if_address_pool, ia);
1963 ip_interface_get_first_ip_addres (ip_lookup_main_t *lm, u32 sw_if_index,
1966 ip_interface_address_t * ia = ip_interface_get_first_interface_address (
1967 lm, sw_if_index, loop);
1968 return ip_interface_address_get_address (lm, ia);
1972 del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index,
1975 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, * a = &_a;
1976 fwd_entry_t * fe = 0;
1978 memset(a, 0, sizeof(*a));
1980 feip = hash_get(lcm->fwd_entry_by_mapping_index, dst_map_index);
1984 fe = pool_elt_at_index(lcm->fwd_entry_pool, feip[0]);
1986 /* delete dp fwd entry */
1989 a->dlocator = fe->dst_loc;
1990 a->slocator = fe->src_loc;
1991 a->vni = gid_address_vni(&a->deid);
1992 gid_address_copy(&a->deid, &fe->deid);
1994 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
1996 /* delete entry in fwd table */
1997 hash_unset(lcm->fwd_entry_by_mapping_index, dst_map_index);
1998 pool_put(lcm->fwd_entry_pool, fe);
2002 add_fwd_entry (lisp_cp_main_t* lcm, u32 src_map_index, u32 dst_map_index)
2004 mapping_t * src_map, * dst_map;
2005 locator_set_t * dst_ls, * src_ls;
2006 u32 i, minp = ~0, sw_if_index;
2008 uword * feip = 0, * tidp;
2010 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, * a = &_a;
2012 memset (a, 0, sizeof(*a));
2014 /* remove entry if it already exists */
2015 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
2017 del_fwd_entry (lcm, src_map_index, dst_map_index);
2019 src_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
2020 dst_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
2022 gid_address_copy (&a->deid, &dst_map->eid);
2023 a->vni = gid_address_vni(&a->deid);
2025 tidp = hash_get(lcm->table_id_by_vni, a->vni);
2028 clib_warning("vni %d not associated to a vrf!", a->vni);
2031 a->table_id = tidp[0];
2033 /* XXX simple forwarding policy: first lowest (value) priority locator */
2034 dst_ls = pool_elt_at_index (lcm->locator_set_pool,
2035 dst_map->locator_set_index);
2036 for (i = 0; i < vec_len (dst_ls->locator_indices); i++)
2038 u32 li = vec_elt (dst_ls->locator_indices, i);
2039 locator_t * l = pool_elt_at_index (lcm->locator_pool, li);
2040 if (l->priority < minp && gid_address_type(&l->address)
2041 == GID_ADDR_IP_PREFIX)
2049 src_ls = pool_elt_at_index(lcm->locator_set_pool,
2050 src_map->locator_set_index);
2051 for (i = 0; i < vec_len(src_ls->locator_indices); i++)
2053 u32 li = vec_elt (src_ls->locator_indices, i);
2054 locator_t * sl = pool_elt_at_index (lcm->locator_pool, li);
2056 if (ip_addr_version(&gid_address_ip(&dl->address)) == IP4)
2059 l4 = ip_interface_get_first_ip_addres (&lcm->im4->lookup_main,
2061 1 /* unnumbered */);
2062 ip_addr_v4(&a->slocator) = *l4;
2063 ip_addr_version(&a->slocator) = IP4;
2068 l6 = ip_interface_get_first_ip_addres (&lcm->im6->lookup_main,
2070 1 /* unnumbered */);
2071 ip_addr_v6(&a->slocator) = *l6;
2072 ip_addr_version(&a->slocator) = IP6;
2077 /* insert data plane forwarding entry */
2080 a->dlocator = gid_address_ip(&dl->address);
2084 a->action = dst_map->action;
2088 u8 ipver = ip_prefix_version(&gid_address_ippref(&a->deid));
2089 a->decap_next_index = (ipver == IP4) ?
2090 LISP_GPE_INPUT_NEXT_IP4_INPUT : LISP_GPE_INPUT_NEXT_IP6_INPUT;
2092 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
2094 /* add tunnel to fwd entry table XXX check return value from DP insertion */
2095 pool_get (lcm->fwd_entry_pool, fe);
2096 fe->dst_loc = a->dlocator;
2097 fe->src_loc = a->slocator;
2098 gid_address_copy (&fe->deid, &a->deid);
2099 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
2100 fe - lcm->fwd_entry_pool);
2103 /* return 0 if the two locator sets are identical 1 otherwise */
2105 compare_locators (lisp_cp_main_t *lcm, u32 * old_ls_indexes,
2106 locator_t * new_locators)
2109 locator_t * old_loc, * new_loc;
2111 if (vec_len (old_ls_indexes) != vec_len(new_locators))
2114 for (i = 0; i < vec_len(new_locators); i++)
2116 old_li = vec_elt(old_ls_indexes, i);
2117 old_loc = pool_elt_at_index(lcm->locator_pool, old_li);
2119 new_loc = vec_elt_at_index(new_locators, i);
2121 if (locator_cmp (old_loc, new_loc))
2128 process_map_reply (lisp_cp_main_t * lcm, vlib_buffer_t * b)
2130 mapping_t * old_map;
2132 u32 len = 0, i, ls_index = 0;
2134 vnet_lisp_add_del_locator_set_args_t _ls_arg, * ls_arg = &_ls_arg;
2135 vnet_lisp_add_del_mapping_args_t _m_args, * m_args = &_m_args;
2136 pending_map_request_t * pmr;
2138 map_reply_hdr_t * mrep_hdr;
2140 u32 dst_map_index, mi;
2143 mrep_hdr = vlib_buffer_get_current (b);
2145 /* Check pending requests table and nonce */
2146 nonce = MREP_NONCE(mrep_hdr);
2147 pmr_index = hash_get(lcm->pending_map_requests_by_nonce, nonce);
2150 clib_warning("No pending map-request entry with nonce %lu!", nonce);
2153 pmr = pool_elt_at_index(lcm->pending_map_requests_pool, pmr_index[0]);
2155 vlib_buffer_pull (b, sizeof(*mrep_hdr));
2157 for (i = 0; i < MREP_REC_COUNT(mrep_hdr); i++)
2159 memset (ls_arg, 0, sizeof(*ls_arg));
2160 memset (m_args, 0, sizeof(*m_args));
2162 h = vlib_buffer_get_current (b);
2163 m_args->ttl = clib_net_to_host_u32 (MAP_REC_TTL(h));
2164 m_args->action = MAP_REC_ACTION(h);
2165 m_args->authoritative = MAP_REC_AUTH(h);
2167 len = lisp_msg_parse_mapping_record (b, &m_args->deid, &ls_arg->locators,
2171 clib_warning ("Failed to parse mapping record!");
2172 vec_foreach (loc, ls_arg->locators)
2176 vec_free(ls_arg->locators);
2180 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &m_args->deid);
2181 old_map = mi != ~0 ? pool_elt_at_index(lcm->mapping_pool, mi) : 0;
2183 /* if mapping already exists, decide if locators (and forwarding) should
2184 * be updated and be done */
2185 if (old_map != 0 && !gid_address_cmp (&old_map->eid, &m_args->deid))
2187 locator_set_t * old_ls;
2189 /* update mapping attributes */
2190 old_map->action = m_args->action;
2191 old_map->authoritative = m_args->authoritative;
2192 old_map->ttl = m_args->ttl;
2194 old_ls = pool_elt_at_index(lcm->locator_set_pool,
2195 old_map->locator_set_index);
2196 /* if the two locators are not equal, update them and forwarding
2197 * otherwise there's nothing to be done */
2198 if (compare_locators (lcm, old_ls->locator_indices, ls_arg->locators))
2200 /* set locator-set index to overwrite */
2202 ls_arg->index = old_map->locator_set_index;
2203 vnet_lisp_add_del_locator_set (ls_arg, 0);
2204 add_fwd_entry (lcm, pmr->src_mapping_index, mi);
2210 /* add locator-set */
2213 vnet_lisp_add_del_locator_set (ls_arg, &ls_index);
2217 m_args->locator_set_index = ls_index;
2218 vnet_lisp_add_del_mapping (m_args, &dst_map_index);
2220 /* add forwarding tunnel */
2221 add_fwd_entry (lcm, pmr->src_mapping_index, dst_map_index);
2223 vec_free(ls_arg->locators);
2226 /* remove pending map request entry */
2227 hash_unset(lcm->pending_map_requests_by_nonce, nonce);
2228 pool_put(lcm->pending_map_requests_pool, pmr);
2232 process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm, vlib_buffer_t * b)
2234 map_request_hdr_t * mreq_hdr;
2235 gid_address_t src, dst;
2238 gid_address_t * itr_rlocs = 0, * rloc;
2240 mreq_hdr = vlib_buffer_get_current (b);
2241 vlib_buffer_pull (b, sizeof(*mreq_hdr));
2243 // nonce = MREQ_NONCE(mreq_hdr);
2245 if (!MREQ_SMR(mreq_hdr)) {
2246 clib_warning("Only SMR Map-Requests supported for now!");
2251 len = lisp_msg_parse_addr (b, &src);
2255 /* for now we don't do anything with the itr's rlocs */
2256 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs, MREQ_ITR_RLOC_COUNT(mreq_hdr) + 1);
2260 /* TODO: RLOCs are currently unused, so free them for now */
2261 vec_foreach (rloc, itr_rlocs)
2263 gid_address_free (rloc);
2266 /* parse eid records and send SMR-invoked map-requests */
2267 for (i = 0; i < MREQ_REC_COUNT(mreq_hdr); i++)
2269 memset(&dst, 0, sizeof(dst));
2270 len = lisp_msg_parse_eid_rec (b, &dst);
2273 clib_warning("Can't parse map-request EID-record");
2276 /* send SMR-invoked map-requests */
2277 send_encapsulated_map_request (vm, lcm, &dst, &src, /* invoked */ 1);
2282 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
2283 vlib_frame_t * from_frame)
2285 u32 n_left_from, * from, * to_next_drop;
2286 lisp_msg_type_e type;
2287 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
2289 from = vlib_frame_vector_args (from_frame);
2290 n_left_from = from_frame->n_vectors;
2293 while (n_left_from > 0)
2295 u32 n_left_to_next_drop;
2297 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
2298 to_next_drop, n_left_to_next_drop);
2299 while (n_left_from > 0 && n_left_to_next_drop > 0)
2307 to_next_drop[0] = bi0;
2309 n_left_to_next_drop -= 1;
2311 b0 = vlib_get_buffer (vm, bi0);
2313 type = lisp_msg_type(vlib_buffer_get_current (b0));
2316 case LISP_MAP_REPLY:
2317 process_map_reply (lcm, b0);
2319 case LISP_MAP_REQUEST:
2320 process_map_request(vm, lcm, b0);
2323 clib_warning("Unsupported LISP message type %d", type);
2327 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
2329 if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
2335 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP, n_left_to_next_drop);
2337 return from_frame->n_vectors;
2340 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
2341 .function = lisp_cp_input,
2342 .name = "lisp-cp-input",
2343 .vector_size = sizeof (u32),
2344 .format_trace = format_lisp_cp_input_trace,
2345 .type = VLIB_NODE_TYPE_INTERNAL,
2347 .n_errors = LISP_CP_INPUT_N_ERROR,
2348 .error_strings = lisp_cp_input_error_strings,
2350 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2353 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2358 lisp_cp_init (vlib_main_t *vm)
2360 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
2361 clib_error_t * error = 0;
2363 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
2366 lcm->im4 = &ip4_main;
2367 lcm->im6 = &ip6_main;
2368 lcm->vlib_main = vm;
2369 lcm->vnet_main = vnet_get_main();
2371 gid_dictionary_init (&lcm->mapping_index_by_gid);
2373 /* default vrf mapped to vni 0 */
2374 hash_set(lcm->table_id_by_vni, 0, 0);
2376 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
2377 lisp_cp_input_node.index, 1 /* is_ip4 */);
2378 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
2379 lisp_cp_input_node.index, 0 /* is_ip4 */);
2384 VLIB_INIT_FUNCTION(lisp_cp_init);