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,
614 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
616 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
617 u32 locator_set_index = ~0;
621 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
624 clib_warning ("locator-set %v doesn't exist", locator_set_name);
627 locator_set_index = p[0];
631 pool_get (lcm->mapping_pool, m);
632 m->locator_set_index = locator_set_index;
634 lcm->pitr_map_index = m - lcm->mapping_pool;
636 /* enable pitr mode */
641 /* remove pitr mapping */
642 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
644 /* disable pitr mode */
650 static clib_error_t *
651 lisp_pitr_set_locator_set_command_fn (vlib_main_t * vm,
652 unformat_input_t * input,
653 vlib_cli_command_t * cmd)
655 u8 locator_name_set = 0;
656 u8 * locator_set_name = 0;
658 unformat_input_t _line_input, * line_input = &_line_input;
660 /* Get a line of input. */
661 if (! unformat_user (input, unformat_line_input, line_input))
664 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
666 if (unformat (line_input, "ls %_%v%_", &locator_set_name))
667 locator_name_set = 1;
668 else if (unformat (line_input, "disable"))
671 return clib_error_return (0, "parse error");
674 if (!locator_name_set)
676 clib_warning ("No locator set specified!");
679 vnet_lisp_pitr_set_locator_set (locator_set_name, is_add);
682 if (locator_set_name)
683 vec_free (locator_set_name);
687 VLIB_CLI_COMMAND (lisp_pitr_set_locator_set_command) = {
689 .short_help = "lisp pitr [disable] ls <locator-set-name>",
690 .function = lisp_pitr_set_locator_set_command_fn,
693 static clib_error_t *
694 lisp_show_local_eid_table_command_fn (vlib_main_t * vm,
695 unformat_input_t * input,
696 vlib_cli_command_t * cmd)
698 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
701 vlib_cli_output (vm, "%=20s%=16s", "EID", "Locator");
702 pool_foreach (mapit, lcm->mapping_pool,
705 locator_set_t * ls = pool_elt_at_index (lcm->locator_set_pool,
706 mapit->locator_set_index);
707 vlib_cli_output (vm, "%-16U%16v", format_gid_address, &mapit->eid,
715 VLIB_CLI_COMMAND (lisp_cp_show_local_eid_table_command) = {
716 .path = "show lisp eid-table",
717 .short_help = "Shows local EID table",
718 .function = lisp_show_local_eid_table_command_fn,
721 /* cleans locator to locator-set data and removes locators not part of
724 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
726 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes;
727 locator_set_t * ls = pool_elt_at_index(lcm->locator_set_pool, lsi);
728 for (i = 0; i < vec_len(ls->locator_indices); i++)
730 loc_indexp = vec_elt_at_index(ls->locator_indices, i);
731 ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
733 for (j = 0; j < vec_len(ls_indexes[0]); j++)
735 ls_indexp = vec_elt_at_index(ls_indexes[0], j);
736 if (ls_indexp[0] == lsi)
740 /* delete index for removed locator-set*/
741 vec_del1(ls_indexes[0], j);
743 /* delete locator if it's part of no locator-set */
744 if (vec_len (ls_indexes[0]) == 0)
745 pool_put_index(lcm->locator_pool, loc_indexp[0]);
749 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
752 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
754 locator_t * loc, * itloc;
755 uword _p = (u32)~0, * p = &_p;
756 u32 loc_index, ls_index, ** ls_indexes;
761 /* check if overwrite */
763 p = hash_get_mem(lcm->locator_set_index_by_name, a->name);
768 if (p && p[0] != (u32)~0)
770 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
773 clib_warning("locator-set %d to be overwritten doesn't exist!",
778 /* clean locator to locator-set vectors and remove locators if
779 * they're not part of another locator-set */
780 clean_locator_to_locator_set (lcm, p[0]);
782 /* remove locator indices from locator set */
783 vec_free(ls->locator_indices);
790 /* new locator-set */
793 pool_get(lcm->locator_set_pool, ls);
794 ls_index = ls - lcm->locator_set_pool;
798 ls->name = vec_dup(a->name);
800 if (!lcm->locator_set_index_by_name)
801 lcm->locator_set_index_by_name = hash_create_vec(
802 /* size */0, sizeof(ls->name[0]), sizeof(uword));
803 hash_set_mem(lcm->locator_set_index_by_name, ls->name, ls_index);
805 /* mark as local locator-set */
806 vec_add1(lcm->local_locator_set_indexes, ls_index);
808 ls->local = a->local;
810 ls_result[0] = ls_index;
813 /* allocate locators */
814 vec_foreach (itloc, a->locators)
816 pool_get(lcm->locator_pool, loc);
818 loc_index = loc - lcm->locator_pool;
820 vec_add1(ls->locator_indices, loc_index);
822 vec_validate (lcm->locator_to_locator_sets, loc_index);
823 ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
825 vec_add1(ls_indexes[0], ls_index);
830 /* find locator-set */
833 p = hash_get_mem(lcm->locator_set_index_by_name, a->name);
836 clib_warning("locator-set %v doesn't exists", a->name);
843 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
846 clib_warning("locator-set with index %d doesn't exists", p[0]);
849 // /* XXX what happens when a mapping is configured to use the loc-set ? */
850 // if (vec_len (vec_elt_at_index(lcm->locator_set_to_eids, p[0])) != 0)
852 // clib_warning ("Can't delete a locator that supports a mapping!");
856 if (vec_len(lcm->locator_set_to_eids) != 0)
858 eid_indexes = vec_elt_at_index(lcm->locator_set_to_eids, p[0]);
859 if (vec_len(eid_indexes[0]) != 0)
861 clib_warning ("Can't delete a locator that supports a mapping!");
866 /* clean locator to locator-sets data */
867 clean_locator_to_locator_set (lcm, p[0]);
873 vec_foreach_index(it, lcm->local_locator_set_indexes)
875 lsi = vec_elt(lcm->local_locator_set_indexes, it);
878 vec_del1(lcm->local_locator_set_indexes, it);
882 hash_unset_mem(lcm->locator_set_index_by_name, ls->name);
885 pool_put(lcm->locator_set_pool, ls);
891 uword *vnet_lisp_get_locator(vnet_lisp_add_del_locator_set_args_t * a,
894 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
899 /* find locator-set */
902 p = hash_get_mem(lcm->locator_set_index_by_name, a->name);
913 vnet_lisp_add_del_locator_set_name (vnet_lisp_add_del_locator_set_args_t * a,
916 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
918 uword _p = (u32)~0, * p = &_p;
920 u32 **eid_indexes = NULL;
923 ASSERT(ls_result != NULL);
925 p = vnet_lisp_get_locator(a, p);
930 if (p && p[0] != (u32)~0)
932 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
935 clib_warning("locator-set %d to be overwritten doesn't exist!",
937 return VNET_API_ERROR_UNSPECIFIED;
940 /* clean locator to locator-set vectors and remove locators if
941 * they're not part of another locator-set */
942 clean_locator_to_locator_set (lcm, p[0]);
944 /* remove locator indices from locator set */
945 vec_free(ls->locator_indices);
952 /* new locator-set */
955 pool_get(lcm->locator_set_pool, ls);
956 ls_index = ls - lcm->locator_set_pool;
960 ls->name = vec_dup(a->name);
962 if (!lcm->locator_set_index_by_name)
963 lcm->locator_set_index_by_name = hash_create_vec(
964 /* size */0, sizeof(ls->name[0]), sizeof(uword));
965 hash_set_mem(lcm->locator_set_index_by_name, ls->name, ls_index);
967 /* mark as local locator-set */
968 vec_add1(lcm->local_locator_set_indexes, ls_index);
970 ls->local = a->local;
971 ls->locator_indices = NULL;
973 ls_result[0] = ls_index;
980 clib_warning("locator-set %v doesn't exists", a->name);
981 return VNET_API_ERROR_INVALID_ARGUMENT;
984 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
987 clib_warning("locator-set with index %d doesn't exists", p[0]);
988 return VNET_API_ERROR_INVALID_ARGUMENT;
991 if (vec_len(lcm->locator_set_to_eids) != 0)
993 eid_indexes = vec_elt_at_index(lcm->locator_set_to_eids, p[0]);
994 if (vec_len(eid_indexes[0]) != 0)
996 clib_warning ("Can't delete a locator that supports a mapping!");
1001 /* clean locator to locator-sets data */
1002 clean_locator_to_locator_set (lcm, p[0]);
1008 vec_foreach_index(it, lcm->local_locator_set_indexes)
1010 lsi = vec_elt(lcm->local_locator_set_indexes, it);
1013 vec_del1(lcm->local_locator_set_indexes, it);
1017 hash_unset_mem(lcm->locator_set_index_by_name, ls->name);
1020 pool_put(lcm->locator_set_pool, ls);
1026 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t *a,
1029 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
1030 locator_set_t *ls = NULL;
1031 locator_t *loc = NULL, *itloc = NULL;
1032 uword _p = (u32)~0, * p = &_p;
1033 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
1037 ASSERT(ls_result != NULL);
1039 p = vnet_lisp_get_locator(a, p);
1041 clib_warning("locator-set %v doesn't exists", a->name);
1042 return VNET_API_ERROR_INVALID_ARGUMENT;
1049 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
1052 clib_warning("locator-set %d to be overwritten doesn't exist!",
1054 return VNET_API_ERROR_INVALID_ARGUMENT;
1058 ls_result[0] = p[0];
1060 /* allocate locators */
1061 itloc = a->locators;
1062 pool_get(lcm->locator_pool, loc);
1064 loc_index = loc - lcm->locator_pool;
1066 vec_add1(ls->locator_indices, loc_index);
1068 vec_validate (lcm->locator_to_locator_sets, loc_index);
1069 ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
1071 vec_add1(ls_indexes[0], ls_index);
1075 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
1078 clib_warning("locator-set with index %d doesn't exists", p[0]);
1079 return VNET_API_ERROR_INVALID_ARGUMENT;
1084 itloc = a->locators;
1086 vec_foreach (locit, ls->locator_indices)
1088 loc = pool_elt_at_index(lcm->locator_pool, locit[0]);
1089 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1091 ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
1093 pool_put_index(lcm->locator_pool, locit[0]);
1094 vec_del1(ls->locator_indices, i);
1095 vec_del1(ls_indexes[0], ls_index);
1105 vnet_lisp_enable_disable (u8 is_enabled)
1107 vnet_lisp_gpe_add_del_iface_args_t _ai, * ai= &_ai;
1108 uword * table_id, * refc;
1110 clib_error_t * error = 0;
1111 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
1112 vnet_lisp_gpe_enable_disable_args_t _a, * a = &_a;
1114 a->is_en = is_enabled;
1115 error = vnet_lisp_gpe_enable_disable (a);
1118 return clib_error_return (0, "failed to %s data-plane!",
1119 a->is_en ? "enable" : "disable");
1124 /* enable all ifaces */
1125 for (i = 0; i < vec_len (lcm->local_mappings_indexes); i++)
1127 mapping_t * m = vec_elt_at_index (lcm->mapping_pool, i);
1129 ai->vni = gid_address_vni (&m->eid);
1131 refc = hash_get (lcm->dp_if_refcount_by_vni, ai->vni);
1134 table_id = hash_get (lcm->table_id_by_vni, ai->vni);
1137 ai->table_id = table_id[0];
1138 /* enables interface and adds defaults */
1139 vnet_lisp_gpe_add_del_iface (ai, 0);
1142 return clib_error_return (0, "no table_id found for vni %u!",
1145 hash_set (lcm->dp_if_refcount_by_vni, ai->vni, 1);
1155 /* clear refcount table */
1156 hash_free (lcm->dp_if_refcount_by_vni);
1157 hash_free (lcm->fwd_entry_by_mapping_index);
1158 pool_free (lcm->fwd_entry_pool);
1161 /* update global flag */
1162 lcm->is_enabled = is_enabled;
1167 static clib_error_t *
1168 lisp_enable_disable_command_fn (vlib_main_t * vm, unformat_input_t * input,
1169 vlib_cli_command_t * cmd)
1171 unformat_input_t _line_input, * line_input = &_line_input;
1175 /* Get a line of input. */
1176 if (! unformat_user (input, unformat_line_input, line_input))
1179 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1181 if (unformat (line_input, "enable"))
1186 else if (unformat (line_input, "disable"))
1190 return clib_error_return (0, "parse error: '%U'",
1191 format_unformat_error, line_input);
1196 return clib_error_return (0, "state not set");
1198 return vnet_lisp_enable_disable (is_enabled);
1201 VLIB_CLI_COMMAND (lisp_cp_enable_disable_command) = {
1203 .short_help = "lisp [enable|disable]",
1204 .function = lisp_enable_disable_command_fn,
1208 vnet_lisp_enable_disable_status (void)
1210 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
1211 return lcm->is_enabled;
1215 format_lisp_status (u8 * s, va_list * args)
1217 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
1218 return format (s, "%s", lcm->is_enabled ? "enabled" : "disabled");
1221 static clib_error_t *
1222 lisp_show_status_command_fn (vlib_main_t * vm, unformat_input_t * input,
1223 vlib_cli_command_t * cmd)
1226 msg = format (msg, "feature: %U\ngpe: %U\n",
1227 format_lisp_status, format_vnet_lisp_gpe_status);
1228 vlib_cli_output (vm, "%v", msg);
1233 VLIB_CLI_COMMAND (lisp_show_status_command) = {
1234 .path = "show lisp status",
1235 .short_help = "show lisp status",
1236 .function = lisp_show_status_command_fn,
1238 static clib_error_t *
1239 lisp_add_del_locator_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
1240 vlib_cli_command_t * cmd)
1242 lisp_gpe_main_t * lgm = &lisp_gpe_main;
1243 vnet_main_t * vnm = lgm->vnet_main;
1244 unformat_input_t _line_input, * line_input = &_line_input;
1246 clib_error_t * error = 0;
1247 u8 * locator_set_name = 0;
1248 locator_t locator, * locators = 0;
1249 vnet_lisp_add_del_locator_set_args_t _a, * a = &_a;
1252 memset(&locator, 0, sizeof(locator));
1253 memset(a, 0, sizeof(a[0]));
1255 /* Get a line of input. */
1256 if (! unformat_user (input, unformat_line_input, line_input))
1259 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1261 if (unformat (line_input, "add %_%v%_", &locator_set_name))
1263 else if (unformat (line_input, "del %_%v%_", &locator_set_name))
1265 else if (unformat (line_input, "iface %U p %d w %d",
1266 unformat_vnet_sw_interface, vnm, &locator.sw_if_index,
1267 &locator.priority, &locator.weight))
1270 vec_add1(locators, locator);
1274 error = unformat_parse_error(line_input);
1279 a->name = locator_set_name;
1280 a->locators = locators;
1284 vnet_lisp_add_del_locator_set(a, &ls_index);
1288 if (locator_set_name)
1289 vec_free (locator_set_name);
1293 VLIB_CLI_COMMAND (lisp_cp_add_del_locator_set_command) = {
1294 .path = "lisp locator-set",
1295 .short_help = "lisp locator-set add/del <name> iface <iface-name> "
1296 "p <priority> w <weight>",
1297 .function = lisp_add_del_locator_set_command_fn,
1300 static clib_error_t *
1301 lisp_cp_show_locator_sets_command_fn (vlib_main_t * vm,
1302 unformat_input_t * input,
1303 vlib_cli_command_t * cmd)
1305 locator_set_t * lsit;
1308 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
1310 vlib_cli_output (vm, "%=20s%=16s%=16s%=16s", "Locator-set", "Locator",
1311 "Priority", "Weight");
1312 pool_foreach (lsit, lcm->locator_set_pool,
1315 msg = format (msg, "%-16v", lsit->name);
1316 vec_foreach (locit, lsit->locator_indices)
1318 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1320 msg = format (msg, "%16d%16d%16d", loc->sw_if_index, loc->priority,
1323 msg = format (msg, "%16U%16d%16d", format_gid_address, &loc->address,
1324 loc->priority, loc->weight);
1326 vlib_cli_output (vm, "%v", msg);
1332 VLIB_CLI_COMMAND (lisp_cp_show_locator_sets_command) = {
1333 .path = "show lisp locator-set",
1334 .short_help = "Shows locator-sets",
1335 .function = lisp_cp_show_locator_sets_command_fn,
1339 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
1341 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
1342 ip_address_t * addr;
1347 vec_foreach(addr, lcm->map_resolvers)
1349 if (!ip_address_cmp (addr, &a->address))
1351 clib_warning("map-resolver %U already exists!", format_ip_address,
1356 vec_add1(lcm->map_resolvers, a->address);
1360 for (i = 0; i < vec_len(lcm->map_resolvers); i++)
1362 addr = vec_elt_at_index(lcm->map_resolvers, i);
1363 if (!ip_address_cmp (addr, &a->address))
1365 vec_delete(lcm->map_resolvers, 1, i);
1373 static clib_error_t *
1374 lisp_add_del_map_resolver_command_fn (vlib_main_t * vm,
1375 unformat_input_t * input,
1376 vlib_cli_command_t * cmd)
1378 unformat_input_t _line_input, * line_input = &_line_input;
1380 ip_address_t ip_addr;
1381 clib_error_t * error = 0;
1382 vnet_lisp_add_del_map_resolver_args_t _a, * a = &_a;
1384 /* Get a line of input. */
1385 if (! unformat_user (input, unformat_line_input, line_input))
1388 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1390 if (unformat (line_input, "add"))
1392 else if (unformat (line_input, "del"))
1394 else if (unformat (line_input, "%U", unformat_ip_address, &ip_addr))
1398 error = unformat_parse_error(line_input);
1403 a->address = ip_addr;
1404 vnet_lisp_add_del_map_resolver (a);
1410 VLIB_CLI_COMMAND (lisp_add_del_map_resolver_command) = {
1411 .path = "lisp map-resolver",
1412 .short_help = "lisp map-resolver add/del <ip_address>",
1413 .function = lisp_add_del_map_resolver_command_fn,
1416 /* Statistics (not really errors) */
1417 #define foreach_lisp_cp_lookup_error \
1419 _(MAP_REQUESTS_SENT, "map-request sent")
1421 static char * lisp_cp_lookup_error_strings[] = {
1422 #define _(sym,string) string,
1423 foreach_lisp_cp_lookup_error
1429 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
1430 foreach_lisp_cp_lookup_error
1432 LISP_CP_LOOKUP_N_ERROR,
1433 } lisp_cp_lookup_error_t;
1437 LISP_CP_LOOKUP_NEXT_DROP,
1438 LISP_CP_LOOKUP_NEXT_IP4_LOOKUP,
1439 LISP_CP_LOOKUP_NEXT_IP6_LOOKUP,
1440 LISP_CP_LOOKUP_N_NEXT,
1441 } lisp_cp_lookup_next_t;
1445 gid_address_t dst_eid;
1446 ip_address_t map_resolver_ip;
1447 } lisp_cp_lookup_trace_t;
1450 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
1452 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1453 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1454 lisp_cp_lookup_trace_t * t = va_arg (*args, lisp_cp_lookup_trace_t *);
1456 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
1457 format_ip_address, &t->map_resolver_ip, format_gid_address,
1463 ip_fib_lookup_with_table (lisp_cp_main_t * lcm, u32 fib_index,
1466 if (ip_addr_version (dst) == IP4)
1467 return ip4_fib_lookup_with_table (lcm->im4, fib_index, &ip_addr_v4(dst),
1470 return ip6_fib_lookup_with_table (lcm->im6, fib_index, &ip_addr_v6(dst));
1474 get_mr_and_local_iface_ip (lisp_cp_main_t *lcm, ip_address_t * mr_ip,
1475 ip_address_t * sloc)
1478 ip_adjacency_t * adj;
1479 ip_interface_address_t * ia = 0;
1480 ip_lookup_main_t * lm;
1481 ip4_address_t * l4 = 0;
1482 ip6_address_t * l6 = 0;
1483 ip_address_t * mrit;
1485 if (vec_len(lcm->map_resolvers) == 0)
1487 clib_warning("No map-resolver configured");
1491 /* find the first mr ip we have a route to and the ip of the
1492 * iface that has a route to it */
1493 vec_foreach(mrit, lcm->map_resolvers)
1495 lm = ip_addr_version (mrit) == IP4 ?
1496 &lcm->im4->lookup_main : &lcm->im6->lookup_main;
1498 adj_index = ip_fib_lookup_with_table (lcm, 0, mrit);
1499 adj = ip_get_adjacency (lm, adj_index);
1504 if (adj->lookup_next_index == IP_LOOKUP_NEXT_ARP)
1506 ia = pool_elt_at_index(lm->if_address_pool, adj->if_address_index);
1507 if (ip_addr_version(mrit) == IP4)
1509 l4 = ip_interface_address_get_address (lm, ia);
1513 l6 = ip_interface_address_get_address (lm, ia);
1516 else if (adj->lookup_next_index == IP_LOOKUP_NEXT_REWRITE)
1518 /* find sw_if_index in rewrite header */
1519 u32 sw_if_index = adj->rewrite_header.sw_if_index;
1521 /* find suitable address */
1522 if (ip_addr_version(mrit) == IP4)
1524 /* find the first ip address */
1525 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1526 sw_if_index, 1 /* unnumbered */,
1528 l4 = ip_interface_address_get_address (&lcm->im4->lookup_main,
1535 /* find the first ip address */
1536 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1537 sw_if_index, 1 /* unnumbered */,
1539 l6 = ip_interface_address_get_address (&lcm->im6->lookup_main,
1548 ip_addr_v4(sloc).as_u32 = l4->as_u32;
1549 ip_addr_version(sloc) = IP4;
1550 ip_address_copy(mr_ip, mrit);
1555 clib_memcpy (&ip_addr_v6(sloc), l6, sizeof(*l6));
1556 ip_addr_version(sloc) = IP6;
1557 ip_address_copy(mr_ip, mrit);
1562 clib_warning("Can't find map-resolver and local interface ip!");
1566 static gid_address_t *
1567 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
1574 ip_interface_address_t * ia = 0;
1575 gid_address_t gid_data, * gid = &gid_data;
1576 gid_address_t * rlocs = 0;
1577 ip_prefix_t * ippref = &gid_address_ippref (gid);
1578 ip_address_t * rloc = &ip_prefix_addr (ippref);
1580 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
1581 for (i = 0; i < vec_len(loc_set->locator_indices); i++)
1583 loc_indexp = vec_elt_at_index(loc_set->locator_indices, i);
1584 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
1586 ip_addr_version(rloc) = IP4;
1587 /* Add ipv4 locators first TODO sort them */
1588 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1589 loc->sw_if_index, 1 /* unnumbered */,
1591 l4 = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
1592 ip_addr_v4 (rloc) = l4[0];
1593 ip_prefix_len (ippref) = 32;
1594 vec_add1 (rlocs, gid[0]);
1597 ip_addr_version(rloc) = IP6;
1598 /* Add ipv6 locators */
1599 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1600 loc->sw_if_index, 1 /* unnumbered */,
1602 l6 = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
1603 ip_addr_v6 (rloc) = l6[0];
1604 ip_prefix_len (ippref) = 128;
1605 vec_add1 (rlocs, gid[0]);
1611 static vlib_buffer_t *
1612 build_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm,
1613 gid_address_t * seid, gid_address_t * deid,
1614 locator_set_t * loc_set, ip_address_t * mr_ip,
1615 ip_address_t * sloc, u8 is_smr_invoked,
1616 u64 *nonce_res, u32 * bi_res)
1620 gid_address_t * rlocs = 0;
1622 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
1624 clib_warning ("Can't allocate buffer for Map-Request!");
1628 b = vlib_get_buffer (vm, bi);
1630 /* leave some space for the encap headers */
1631 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
1634 rlocs = build_itr_rloc_list (lcm, loc_set);
1637 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked, nonce_res);
1639 /* push ecm: udp-ip-lisp */
1640 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
1642 /* push outer ip header */
1643 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
1654 send_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm,
1655 gid_address_t * seid, gid_address_t * deid,
1658 u32 next_index, bi = 0, * to_next, map_index;
1662 locator_set_t * loc_set;
1664 pending_map_request_t * pmr;
1665 ip_address_t mr_ip, sloc;
1667 /* get locator-set for seid */
1668 if (!lcm->lisp_pitr)
1670 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
1671 if (map_index == ~0)
1673 clib_warning("No local mapping found in eid-table for %U!",
1674 format_gid_address, seid);
1678 map = pool_elt_at_index (lcm->mapping_pool, map_index);
1682 clib_warning("Mapping found for src eid %U is not marked as local!",
1683 format_gid_address, seid);
1689 map_index = lcm->pitr_map_index;
1690 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
1693 loc_set = pool_elt_at_index (lcm->locator_set_pool, map->locator_set_index);
1695 /* get local iface ip to use in map-request XXX fib 0 for now*/
1696 get_mr_and_local_iface_ip (lcm, &mr_ip, &sloc);
1698 /* build the encapsulated map request */
1699 b = build_encapsulated_map_request (vm, lcm, seid, deid, loc_set, &mr_ip,
1700 &sloc, is_smr_invoked, &nonce, &bi);
1705 /* set fib index and lookup node */
1706 vnet_buffer(b)->sw_if_index[VLIB_TX] = ~0;
1707 next_index = (ip_addr_version(&mr_ip) == IP4) ?
1708 ip4_lookup_node.index : ip6_lookup_node.index;
1710 f = vlib_get_frame_to_node (vm, next_index);
1712 /* Enqueue the packet */
1713 to_next = vlib_frame_vector_args (f);
1716 vlib_put_frame_to_node (vm, next_index, f);
1718 /* add map-request to pending requests table */
1719 pool_get(lcm->pending_map_requests_pool, pmr);
1720 gid_address_copy (&pmr->src, seid);
1721 gid_address_copy (&pmr->dst, deid);
1722 pmr->src_mapping_index = map_index;
1723 hash_set(lcm->pending_map_requests_by_nonce, nonce,
1724 pmr - lcm->pending_map_requests_pool);
1728 get_src_and_dst (void *hdr, ip_address_t * src, ip_address_t *dst)
1730 ip4_header_t * ip4 = hdr;
1733 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
1735 ip_addr_v4(src).as_u32 = ip4->src_address.as_u32;
1736 ip_addr_version(src) = IP4;
1737 ip_addr_v4(dst).as_u32 = ip4->dst_address.as_u32;
1738 ip_addr_version(dst) = IP4;
1743 clib_memcpy (&ip_addr_v6(src), &ip6->src_address, sizeof(ip6->src_address));
1744 ip_addr_version(src) = IP6;
1745 clib_memcpy (&ip_addr_v6(dst), &ip6->dst_address, sizeof(ip6->dst_address));
1746 ip_addr_version(dst) = IP6;
1751 lisp_cp_lookup (vlib_main_t * vm, vlib_node_runtime_t * node,
1752 vlib_frame_t * from_frame)
1754 u32 * from, * to_next_drop, di, si;
1755 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main();
1756 u32 pkts_mapped = 0;
1757 uword n_left_from, n_left_to_next_drop;
1759 from = vlib_frame_vector_args (from_frame);
1760 n_left_from = from_frame->n_vectors;
1762 while (n_left_from > 0)
1764 vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
1765 to_next_drop, n_left_to_next_drop);
1767 while (n_left_from > 0 && n_left_to_next_drop > 0)
1772 gid_address_t src, dst;
1773 ip_prefix_t * spref, * dpref;
1775 gid_address_type (&src) = GID_ADDR_IP_PREFIX;
1776 spref = &gid_address_ippref(&src);
1777 gid_address_type (&dst) = GID_ADDR_IP_PREFIX;
1778 dpref = &gid_address_ippref(&dst);
1783 to_next_drop[0] = pi0;
1785 n_left_to_next_drop -= 1;
1787 p0 = vlib_get_buffer (vm, pi0);
1788 p0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
1790 /* src/dst eid pair */
1791 ip0 = vlib_buffer_get_current (p0);
1792 get_src_and_dst (ip0, &ip_prefix_addr(spref), &ip_prefix_addr(dpref));
1793 ip_prefix_len(spref) = ip_address_max_len (ip_prefix_version(spref));
1794 ip_prefix_len(dpref) = ip_address_max_len (ip_prefix_version(dpref));
1796 /* if we have remote mapping for destination already in map-chache
1797 add forwarding tunnel directly. If not send a map-request */
1798 di = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
1801 mapping_t * m = vec_elt_at_index (lcm->mapping_pool, di);
1802 /* send a map-request also in case of negative mapping entry
1803 with corresponding action */
1804 if (m->action == ACTION_SEND_MAP_REQUEST)
1806 /* send map-request */
1807 send_encapsulated_map_request (vm, lcm, &src, &dst, 0);
1812 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1816 add_fwd_entry (lcm, si, di);
1822 /* send map-request */
1823 send_encapsulated_map_request (vm, lcm, &src, &dst, 0);
1827 if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED))
1829 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, p0,
1832 memset(tr, 0, sizeof(*tr));
1833 gid_address_copy (&tr->dst_eid, &dst);
1834 if (vec_len(lcm->map_resolvers) > 0)
1836 clib_memcpy (&tr->map_resolver_ip,
1837 vec_elt_at_index(lcm->map_resolvers, 0),
1838 sizeof(ip_address_t));
1843 vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, n_left_to_next_drop);
1845 vlib_node_increment_counter (vm, node->node_index,
1846 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
1848 return from_frame->n_vectors;
1851 VLIB_REGISTER_NODE (lisp_cp_lookup_node) = {
1852 .function = lisp_cp_lookup,
1853 .name = "lisp-cp-lookup",
1854 .vector_size = sizeof (u32),
1855 .format_trace = format_lisp_cp_lookup_trace,
1856 .type = VLIB_NODE_TYPE_INTERNAL,
1858 .n_errors = LISP_CP_LOOKUP_N_ERROR,
1859 .error_strings = lisp_cp_lookup_error_strings,
1861 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
1864 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
1865 [LISP_CP_LOOKUP_NEXT_IP4_LOOKUP] = "ip4-lookup",
1866 [LISP_CP_LOOKUP_NEXT_IP6_LOOKUP] = "ip6-lookup",
1870 /* lisp_cp_input statistics */
1871 #define foreach_lisp_cp_input_error \
1873 _(MAP_REPLIES_RECEIVED, "map-replies received")
1875 static char * lisp_cp_input_error_strings[] = {
1876 #define _(sym,string) string,
1877 foreach_lisp_cp_input_error
1883 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
1884 foreach_lisp_cp_input_error
1886 LISP_CP_INPUT_N_ERROR,
1887 } lisp_cp_input_error_t;
1891 LISP_CP_INPUT_NEXT_DROP,
1892 LISP_CP_INPUT_N_NEXT,
1893 } lisp_cp_input_next_t;
1897 gid_address_t dst_eid;
1898 ip4_address_t map_resolver_ip;
1899 } lisp_cp_input_trace_t;
1902 format_lisp_cp_input_trace (u8 * s, va_list * args)
1904 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1905 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1906 CLIB_UNUSED(lisp_cp_input_trace_t * t) = va_arg (*args, lisp_cp_input_trace_t *);
1908 s = format (s, "LISP-CP-INPUT: TODO");
1912 ip_interface_address_t *
1913 ip_interface_get_first_interface_address (ip_lookup_main_t *lm, u32 sw_if_index,
1916 vnet_main_t *vnm = vnet_get_main ();
1917 vnet_sw_interface_t * swif = vnet_get_sw_interface (vnm, sw_if_index);
1918 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
1919 sw_if_index = swif->unnumbered_sw_if_index;
1921 (vec_len((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
1922 vec_elt((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
1924 return pool_elt_at_index((lm)->if_address_pool, ia);
1928 ip_interface_get_first_ip_addres (ip_lookup_main_t *lm, u32 sw_if_index,
1931 ip_interface_address_t * ia = ip_interface_get_first_interface_address (
1932 lm, sw_if_index, loop);
1933 return ip_interface_address_get_address (lm, ia);
1937 del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index,
1940 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, * a = &_a;
1941 fwd_entry_t * fe = 0;
1943 memset(a, 0, sizeof(*a));
1945 feip = hash_get(lcm->fwd_entry_by_mapping_index, dst_map_index);
1949 fe = pool_elt_at_index(lcm->fwd_entry_pool, feip[0]);
1951 /* delete dp fwd entry */
1954 a->dlocator = fe->dst_loc;
1955 a->slocator = fe->src_loc;
1956 a->vni = gid_address_vni(&a->deid);
1957 gid_address_copy(&a->deid, &fe->deid);
1959 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
1961 /* delete entry in fwd table */
1962 hash_unset(lcm->fwd_entry_by_mapping_index, dst_map_index);
1963 pool_put(lcm->fwd_entry_pool, fe);
1967 add_fwd_entry (lisp_cp_main_t* lcm, u32 src_map_index, u32 dst_map_index)
1969 mapping_t * src_map, * dst_map;
1970 locator_set_t * dst_ls, * src_ls;
1971 u32 i, minp = ~0, sw_if_index;
1973 uword * feip = 0, * tidp;
1975 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, * a = &_a;
1977 memset (a, 0, sizeof(*a));
1979 /* remove entry if it already exists */
1980 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
1982 del_fwd_entry (lcm, src_map_index, dst_map_index);
1984 src_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
1985 dst_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
1987 gid_address_copy (&a->deid, &dst_map->eid);
1988 a->vni = gid_address_vni(&a->deid);
1990 tidp = hash_get(lcm->table_id_by_vni, a->vni);
1993 clib_warning("vni %d not associated to a vrf!", a->vni);
1996 a->table_id = tidp[0];
1998 /* XXX simple forwarding policy: first lowest (value) priority locator */
1999 dst_ls = pool_elt_at_index (lcm->locator_set_pool,
2000 dst_map->locator_set_index);
2001 for (i = 0; i < vec_len (dst_ls->locator_indices); i++)
2003 u32 li = vec_elt (dst_ls->locator_indices, i);
2004 locator_t * l = pool_elt_at_index (lcm->locator_pool, li);
2005 if (l->priority < minp && gid_address_type(&l->address)
2006 == GID_ADDR_IP_PREFIX)
2014 src_ls = pool_elt_at_index(lcm->locator_set_pool,
2015 src_map->locator_set_index);
2016 for (i = 0; i < vec_len(src_ls->locator_indices); i++)
2018 u32 li = vec_elt (src_ls->locator_indices, i);
2019 locator_t * sl = pool_elt_at_index (lcm->locator_pool, li);
2021 if (ip_addr_version(&gid_address_ip(&dl->address)) == IP4)
2024 l4 = ip_interface_get_first_ip_addres (&lcm->im4->lookup_main,
2026 1 /* unnumbered */);
2027 ip_addr_v4(&a->slocator) = *l4;
2028 ip_addr_version(&a->slocator) = IP4;
2033 l6 = ip_interface_get_first_ip_addres (&lcm->im6->lookup_main,
2035 1 /* unnumbered */);
2036 ip_addr_v6(&a->slocator) = *l6;
2037 ip_addr_version(&a->slocator) = IP6;
2042 /* insert data plane forwarding entry */
2045 a->dlocator = gid_address_ip(&dl->address);
2049 a->action = dst_map->action;
2053 u8 ipver = ip_prefix_version(&gid_address_ippref(&a->deid));
2054 a->decap_next_index = (ipver == IP4) ?
2055 LISP_GPE_INPUT_NEXT_IP4_INPUT : LISP_GPE_INPUT_NEXT_IP6_INPUT;
2057 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
2059 /* add tunnel to fwd entry table XXX check return value from DP insertion */
2060 pool_get (lcm->fwd_entry_pool, fe);
2061 fe->dst_loc = a->dlocator;
2062 fe->src_loc = a->slocator;
2063 gid_address_copy (&fe->deid, &a->deid);
2064 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
2065 fe - lcm->fwd_entry_pool);
2068 /* return 0 if the two locator sets are identical 1 otherwise */
2070 compare_locators (lisp_cp_main_t *lcm, u32 * old_ls_indexes,
2071 locator_t * new_locators)
2074 locator_t * old_loc, * new_loc;
2076 if (vec_len (old_ls_indexes) != vec_len(new_locators))
2079 for (i = 0; i < vec_len(new_locators); i++)
2081 old_li = vec_elt(old_ls_indexes, i);
2082 old_loc = pool_elt_at_index(lcm->locator_pool, old_li);
2084 new_loc = vec_elt_at_index(new_locators, i);
2086 if (locator_cmp (old_loc, new_loc))
2093 process_map_reply (lisp_cp_main_t * lcm, vlib_buffer_t * b)
2095 mapping_t * old_map;
2097 u32 len = 0, i, ls_index = 0;
2099 vnet_lisp_add_del_locator_set_args_t _ls_arg, * ls_arg = &_ls_arg;
2100 vnet_lisp_add_del_mapping_args_t _m_args, * m_args = &_m_args;
2101 pending_map_request_t * pmr;
2103 map_reply_hdr_t * mrep_hdr;
2105 u32 dst_map_index, mi;
2108 mrep_hdr = vlib_buffer_get_current (b);
2110 /* Check pending requests table and nonce */
2111 nonce = MREP_NONCE(mrep_hdr);
2112 pmr_index = hash_get(lcm->pending_map_requests_by_nonce, nonce);
2115 clib_warning("No pending map-request entry with nonce %lu!", nonce);
2118 pmr = pool_elt_at_index(lcm->pending_map_requests_pool, pmr_index[0]);
2120 vlib_buffer_pull (b, sizeof(*mrep_hdr));
2122 for (i = 0; i < MREP_REC_COUNT(mrep_hdr); i++)
2124 memset (ls_arg, 0, sizeof(*ls_arg));
2125 memset (m_args, 0, sizeof(*m_args));
2127 h = vlib_buffer_get_current (b);
2128 m_args->ttl = clib_net_to_host_u32 (MAP_REC_TTL(h));
2129 m_args->action = MAP_REC_ACTION(h);
2130 m_args->authoritative = MAP_REC_AUTH(h);
2132 len = lisp_msg_parse_mapping_record (b, &m_args->deid, &ls_arg->locators,
2136 clib_warning ("Failed to parse mapping record!");
2137 vec_foreach (loc, ls_arg->locators)
2141 vec_free(ls_arg->locators);
2145 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &m_args->deid);
2146 old_map = mi != ~0 ? pool_elt_at_index(lcm->mapping_pool, mi) : 0;
2148 /* if mapping already exists, decide if locators (and forwarding) should
2149 * be updated and be done */
2150 if (old_map != 0 && !gid_address_cmp (&old_map->eid, &m_args->deid))
2152 locator_set_t * old_ls;
2154 /* update mapping attributes */
2155 old_map->action = m_args->action;
2156 old_map->authoritative = m_args->authoritative;
2157 old_map->ttl = m_args->ttl;
2159 old_ls = pool_elt_at_index(lcm->locator_set_pool,
2160 old_map->locator_set_index);
2161 /* if the two locators are not equal, update them and forwarding
2162 * otherwise there's nothing to be done */
2163 if (compare_locators (lcm, old_ls->locator_indices, ls_arg->locators))
2165 /* set locator-set index to overwrite */
2167 ls_arg->index = old_map->locator_set_index;
2168 vnet_lisp_add_del_locator_set (ls_arg, 0);
2169 add_fwd_entry (lcm, pmr->src_mapping_index, mi);
2175 /* add locator-set */
2178 vnet_lisp_add_del_locator_set (ls_arg, &ls_index);
2182 m_args->locator_set_index = ls_index;
2183 vnet_lisp_add_del_mapping (m_args, &dst_map_index);
2185 /* add forwarding tunnel */
2186 add_fwd_entry (lcm, pmr->src_mapping_index, dst_map_index);
2188 vec_free(ls_arg->locators);
2191 /* remove pending map request entry */
2192 hash_unset(lcm->pending_map_requests_by_nonce, nonce);
2193 pool_put(lcm->pending_map_requests_pool, pmr);
2197 process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm, vlib_buffer_t * b)
2199 map_request_hdr_t * mreq_hdr;
2200 gid_address_t src, dst;
2203 gid_address_t * itr_rlocs = 0, * rloc;
2205 mreq_hdr = vlib_buffer_get_current (b);
2206 vlib_buffer_pull (b, sizeof(*mreq_hdr));
2208 // nonce = MREQ_NONCE(mreq_hdr);
2210 if (!MREQ_SMR(mreq_hdr)) {
2211 clib_warning("Only SMR Map-Requests supported for now!");
2216 len = lisp_msg_parse_addr (b, &src);
2220 /* for now we don't do anything with the itr's rlocs */
2221 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs, MREQ_ITR_RLOC_COUNT(mreq_hdr) + 1);
2225 /* TODO: RLOCs are currently unused, so free them for now */
2226 vec_foreach (rloc, itr_rlocs)
2228 gid_address_free (rloc);
2231 /* parse eid records and send SMR-invoked map-requests */
2232 for (i = 0; i < MREQ_REC_COUNT(mreq_hdr); i++)
2234 memset(&dst, 0, sizeof(dst));
2235 len = lisp_msg_parse_eid_rec (b, &dst);
2238 clib_warning("Can't parse map-request EID-record");
2241 /* send SMR-invoked map-requests */
2242 send_encapsulated_map_request (vm, lcm, &dst, &src, /* invoked */ 1);
2247 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
2248 vlib_frame_t * from_frame)
2250 u32 n_left_from, * from, * to_next_drop;
2251 lisp_msg_type_e type;
2252 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
2254 from = vlib_frame_vector_args (from_frame);
2255 n_left_from = from_frame->n_vectors;
2258 while (n_left_from > 0)
2260 u32 n_left_to_next_drop;
2262 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
2263 to_next_drop, n_left_to_next_drop);
2264 while (n_left_from > 0 && n_left_to_next_drop > 0)
2272 to_next_drop[0] = bi0;
2274 n_left_to_next_drop -= 1;
2276 b0 = vlib_get_buffer (vm, bi0);
2278 type = lisp_msg_type(vlib_buffer_get_current (b0));
2281 case LISP_MAP_REPLY:
2282 process_map_reply (lcm, b0);
2284 case LISP_MAP_REQUEST:
2285 process_map_request(vm, lcm, b0);
2288 clib_warning("Unsupported LISP message type %d", type);
2292 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
2294 if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
2300 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP, n_left_to_next_drop);
2302 return from_frame->n_vectors;
2305 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
2306 .function = lisp_cp_input,
2307 .name = "lisp-cp-input",
2308 .vector_size = sizeof (u32),
2309 .format_trace = format_lisp_cp_input_trace,
2310 .type = VLIB_NODE_TYPE_INTERNAL,
2312 .n_errors = LISP_CP_INPUT_N_ERROR,
2313 .error_strings = lisp_cp_input_error_strings,
2315 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2318 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2323 lisp_cp_init (vlib_main_t *vm)
2325 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
2326 clib_error_t * error = 0;
2328 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
2331 lcm->im4 = &ip4_main;
2332 lcm->im6 = &ip6_main;
2333 lcm->vlib_main = vm;
2334 lcm->vnet_main = vnet_get_main();
2336 gid_dictionary_init (&lcm->mapping_index_by_gid);
2338 /* default vrf mapped to vni 0 */
2339 hash_set(lcm->table_id_by_vni, 0, 0);
2341 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
2342 lisp_cp_input_node.index, 1 /* is_ip4 */);
2343 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
2344 lisp_cp_input_node.index, 0 /* is_ip4 */);
2349 VLIB_INIT_FUNCTION(lisp_cp_init);