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 uword *get_locator_set_index(vnet_lisp_add_del_locator_set_args_t * a,
787 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
792 /* find locator-set */
795 p = hash_get_mem(lcm->locator_set_index_by_name, a->name);
806 int is_locator_in_locator_set(lisp_cp_main_t * lcm, locator_set_t * ls,
815 vec_foreach(locit, ls->locator_indices)
817 itloc = pool_elt_at_index(lcm->locator_pool, locit[0]);
818 if (itloc->sw_if_index == loc->sw_if_index ||
819 !gid_address_cmp(&itloc->address, &loc->address))
821 clib_warning("Duplicate locator");
822 return VNET_API_ERROR_VALUE_EXIST;
830 void remove_locator_from_locator_set(locator_set_t * ls, u32 * locit,
831 u32 ls_index, u32 loc_id)
833 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
834 u32 ** ls_indexes = NULL;
837 ASSERT(locit != NULL);
839 ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
841 pool_put_index(lcm->locator_pool, locit[0]);
842 vec_del1(ls->locator_indices, loc_id);
843 vec_del1(ls_indexes[0], ls_index);
847 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
848 locator_set_t * ls, u32 * ls_result)
850 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
851 locator_t * loc = NULL, *itloc = NULL;
852 uword _p = (u32)~0, * p = &_p;
853 u32 loc_index = ~0, ls_index = ~0, * locit = NULL, ** ls_indexes = NULL;
859 p = get_locator_set_index(a, p);
862 clib_warning("locator-set %v doesn't exist", a->name);
863 return VNET_API_ERROR_INVALID_ARGUMENT;
868 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
871 clib_warning("locator-set %d to be overwritten doesn't exist!",
873 return VNET_API_ERROR_INVALID_ARGUMENT;
883 /* allocate locators */
884 vec_foreach (itloc, a->locators)
886 ret = is_locator_in_locator_set(lcm, ls, itloc);
892 pool_get(lcm->locator_pool, loc);
894 loc_index = loc - lcm->locator_pool;
896 vec_add1(ls->locator_indices, loc_index);
898 vec_validate (lcm->locator_to_locator_sets, loc_index);
899 ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
901 vec_add1(ls_indexes[0], ls_index);
910 vec_foreach (locit, ls->locator_indices)
912 loc = pool_elt_at_index(lcm->locator_pool, locit[0]);
914 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
916 remove_locator_from_locator_set(ls, locit,
919 if (0 == loc->local &&
920 !gid_address_cmp(&loc->address, &itloc->address))
922 remove_locator_from_locator_set(ls, locit,
934 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
937 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
939 uword _p = (u32)~0, * p = &_p;
946 p = get_locator_set_index(a, p);
949 if (p && p[0] != (u32)~0)
951 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
954 clib_warning("locator-set %d to be overwritten doesn't exist!",
959 /* clean locator to locator-set vectors and remove locators if
960 * they're not part of another locator-set */
961 clean_locator_to_locator_set (lcm, p[0]);
963 /* remove locator indices from locator set */
964 vec_free(ls->locator_indices);
971 /* new locator-set */
974 pool_get(lcm->locator_set_pool, ls);
975 memset(ls, 0, sizeof(*ls));
976 ls_index = ls - lcm->locator_set_pool;
980 ls->name = vec_dup(a->name);
982 if (!lcm->locator_set_index_by_name)
983 lcm->locator_set_index_by_name = hash_create_vec(
984 /* size */0, sizeof(ls->name[0]), sizeof(uword));
985 hash_set_mem(lcm->locator_set_index_by_name, ls->name, ls_index);
987 /* mark as local locator-set */
988 vec_add1(lcm->local_locator_set_indexes, ls_index);
990 ls->local = a->local;
992 ls_result[0] = ls_index;
995 ret = vnet_lisp_add_del_locator(a, ls, NULL);
1003 p = get_locator_set_index(a, p);
1006 clib_warning("locator-set %v doesn't exists", a->name);
1010 ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
1013 clib_warning("locator-set with index %d doesn't exists", p[0]);
1017 if (vec_len(lcm->locator_set_to_eids) != 0)
1019 eid_indexes = vec_elt_at_index(lcm->locator_set_to_eids, p[0]);
1020 if (vec_len(eid_indexes[0]) != 0)
1022 clib_warning ("Can't delete a locator that supports a mapping!");
1027 /* clean locator to locator-sets data */
1028 clean_locator_to_locator_set (lcm, p[0]);
1034 vec_foreach_index(it, lcm->local_locator_set_indexes)
1036 lsi = vec_elt(lcm->local_locator_set_indexes, it);
1039 vec_del1(lcm->local_locator_set_indexes, it);
1043 hash_unset_mem(lcm->locator_set_index_by_name, ls->name);
1046 vec_free(ls->locator_indices);
1047 pool_put(lcm->locator_set_pool, ls);
1053 vnet_lisp_enable_disable (u8 is_enabled)
1055 vnet_lisp_gpe_add_del_iface_args_t _ai, * ai= &_ai;
1056 uword * table_id, * refc;
1058 clib_error_t * error = 0;
1059 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
1060 vnet_lisp_gpe_enable_disable_args_t _a, * a = &_a;
1062 a->is_en = is_enabled;
1063 error = vnet_lisp_gpe_enable_disable (a);
1066 return clib_error_return (0, "failed to %s data-plane!",
1067 a->is_en ? "enable" : "disable");
1072 /* enable all ifaces */
1073 for (i = 0; i < vec_len (lcm->local_mappings_indexes); i++)
1075 mapping_t * m = vec_elt_at_index (lcm->mapping_pool, i);
1077 ai->vni = gid_address_vni (&m->eid);
1079 refc = hash_get (lcm->dp_if_refcount_by_vni, ai->vni);
1082 table_id = hash_get (lcm->table_id_by_vni, ai->vni);
1085 ai->table_id = table_id[0];
1086 /* enables interface and adds defaults */
1087 vnet_lisp_gpe_add_del_iface (ai, 0);
1090 return clib_error_return (0, "no table_id found for vni %u!",
1093 hash_set (lcm->dp_if_refcount_by_vni, ai->vni, 1);
1103 /* clear refcount table */
1104 hash_free (lcm->dp_if_refcount_by_vni);
1105 hash_free (lcm->fwd_entry_by_mapping_index);
1106 pool_free (lcm->fwd_entry_pool);
1109 /* update global flag */
1110 lcm->is_enabled = is_enabled;
1115 static clib_error_t *
1116 lisp_enable_disable_command_fn (vlib_main_t * vm, unformat_input_t * input,
1117 vlib_cli_command_t * cmd)
1119 unformat_input_t _line_input, * line_input = &_line_input;
1123 /* Get a line of input. */
1124 if (! unformat_user (input, unformat_line_input, line_input))
1127 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1129 if (unformat (line_input, "enable"))
1134 else if (unformat (line_input, "disable"))
1138 return clib_error_return (0, "parse error: '%U'",
1139 format_unformat_error, line_input);
1144 return clib_error_return (0, "state not set");
1146 return vnet_lisp_enable_disable (is_enabled);
1149 VLIB_CLI_COMMAND (lisp_cp_enable_disable_command) = {
1151 .short_help = "lisp [enable|disable]",
1152 .function = lisp_enable_disable_command_fn,
1156 vnet_lisp_enable_disable_status (void)
1158 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
1159 return lcm->is_enabled;
1163 format_lisp_status (u8 * s, va_list * args)
1165 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
1166 return format (s, "%s", lcm->is_enabled ? "enabled" : "disabled");
1169 static clib_error_t *
1170 lisp_show_status_command_fn (vlib_main_t * vm, unformat_input_t * input,
1171 vlib_cli_command_t * cmd)
1174 msg = format (msg, "feature: %U\ngpe: %U\n",
1175 format_lisp_status, format_vnet_lisp_gpe_status);
1176 vlib_cli_output (vm, "%v", msg);
1181 VLIB_CLI_COMMAND (lisp_show_status_command) = {
1182 .path = "show lisp status",
1183 .short_help = "show lisp status",
1184 .function = lisp_show_status_command_fn,
1186 static clib_error_t *
1187 lisp_add_del_locator_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
1188 vlib_cli_command_t * cmd)
1190 lisp_gpe_main_t * lgm = &lisp_gpe_main;
1191 vnet_main_t * vnm = lgm->vnet_main;
1192 unformat_input_t _line_input, * line_input = &_line_input;
1194 clib_error_t * error = 0;
1195 u8 * locator_set_name = 0;
1196 locator_t locator, * locators = 0;
1197 vnet_lisp_add_del_locator_set_args_t _a, * a = &_a;
1200 memset(&locator, 0, sizeof(locator));
1201 memset(a, 0, sizeof(a[0]));
1203 /* Get a line of input. */
1204 if (! unformat_user (input, unformat_line_input, line_input))
1207 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1209 if (unformat (line_input, "add %_%v%_", &locator_set_name))
1211 else if (unformat (line_input, "del %_%v%_", &locator_set_name))
1213 else if (unformat (line_input, "iface %U p %d w %d",
1214 unformat_vnet_sw_interface, vnm, &locator.sw_if_index,
1215 &locator.priority, &locator.weight))
1218 vec_add1(locators, locator);
1222 error = unformat_parse_error(line_input);
1227 a->name = locator_set_name;
1228 a->locators = locators;
1232 vnet_lisp_add_del_locator_set(a, &ls_index);
1236 if (locator_set_name)
1237 vec_free (locator_set_name);
1241 VLIB_CLI_COMMAND (lisp_cp_add_del_locator_set_command) = {
1242 .path = "lisp locator-set",
1243 .short_help = "lisp locator-set add/del <name> iface <iface-name> "
1244 "p <priority> w <weight>",
1245 .function = lisp_add_del_locator_set_command_fn,
1248 static clib_error_t *
1249 lisp_cp_show_locator_sets_command_fn (vlib_main_t * vm,
1250 unformat_input_t * input,
1251 vlib_cli_command_t * cmd)
1253 locator_set_t * lsit;
1256 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
1258 vlib_cli_output (vm, "%=20s%=16s%=16s%=16s", "Locator-set", "Locator",
1259 "Priority", "Weight");
1260 pool_foreach (lsit, lcm->locator_set_pool,
1263 msg = format (msg, "%-16v", lsit->name);
1264 vec_foreach (locit, lsit->locator_indices)
1266 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1268 msg = format (msg, "%16d%16d%16d", loc->sw_if_index, loc->priority,
1271 msg = format (msg, "%16U%16d%16d", format_gid_address, &loc->address,
1272 loc->priority, loc->weight);
1274 vlib_cli_output (vm, "%v", msg);
1280 VLIB_CLI_COMMAND (lisp_cp_show_locator_sets_command) = {
1281 .path = "show lisp locator-set",
1282 .short_help = "Shows locator-sets",
1283 .function = lisp_cp_show_locator_sets_command_fn,
1287 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
1289 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
1290 ip_address_t * addr;
1295 vec_foreach(addr, lcm->map_resolvers)
1297 if (!ip_address_cmp (addr, &a->address))
1299 clib_warning("map-resolver %U already exists!", format_ip_address,
1304 vec_add1(lcm->map_resolvers, a->address);
1308 for (i = 0; i < vec_len(lcm->map_resolvers); i++)
1310 addr = vec_elt_at_index(lcm->map_resolvers, i);
1311 if (!ip_address_cmp (addr, &a->address))
1313 vec_delete(lcm->map_resolvers, 1, i);
1321 static clib_error_t *
1322 lisp_add_del_map_resolver_command_fn (vlib_main_t * vm,
1323 unformat_input_t * input,
1324 vlib_cli_command_t * cmd)
1326 unformat_input_t _line_input, * line_input = &_line_input;
1328 ip_address_t ip_addr;
1329 clib_error_t * error = 0;
1330 vnet_lisp_add_del_map_resolver_args_t _a, * a = &_a;
1332 /* Get a line of input. */
1333 if (! unformat_user (input, unformat_line_input, line_input))
1336 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1338 if (unformat (line_input, "add"))
1340 else if (unformat (line_input, "del"))
1342 else if (unformat (line_input, "%U", unformat_ip_address, &ip_addr))
1346 error = unformat_parse_error(line_input);
1351 a->address = ip_addr;
1352 vnet_lisp_add_del_map_resolver (a);
1358 VLIB_CLI_COMMAND (lisp_add_del_map_resolver_command) = {
1359 .path = "lisp map-resolver",
1360 .short_help = "lisp map-resolver add/del <ip_address>",
1361 .function = lisp_add_del_map_resolver_command_fn,
1364 /* Statistics (not really errors) */
1365 #define foreach_lisp_cp_lookup_error \
1367 _(MAP_REQUESTS_SENT, "map-request sent")
1369 static char * lisp_cp_lookup_error_strings[] = {
1370 #define _(sym,string) string,
1371 foreach_lisp_cp_lookup_error
1377 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
1378 foreach_lisp_cp_lookup_error
1380 LISP_CP_LOOKUP_N_ERROR,
1381 } lisp_cp_lookup_error_t;
1385 LISP_CP_LOOKUP_NEXT_DROP,
1386 LISP_CP_LOOKUP_NEXT_IP4_LOOKUP,
1387 LISP_CP_LOOKUP_NEXT_IP6_LOOKUP,
1388 LISP_CP_LOOKUP_N_NEXT,
1389 } lisp_cp_lookup_next_t;
1393 gid_address_t dst_eid;
1394 ip_address_t map_resolver_ip;
1395 } lisp_cp_lookup_trace_t;
1398 format_lisp_cp_lookup_trace (u8 * s, va_list * args)
1400 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1401 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1402 lisp_cp_lookup_trace_t * t = va_arg (*args, lisp_cp_lookup_trace_t *);
1404 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
1405 format_ip_address, &t->map_resolver_ip, format_gid_address,
1411 ip_fib_lookup_with_table (lisp_cp_main_t * lcm, u32 fib_index,
1414 if (ip_addr_version (dst) == IP4)
1415 return ip4_fib_lookup_with_table (lcm->im4, fib_index, &ip_addr_v4(dst),
1418 return ip6_fib_lookup_with_table (lcm->im6, fib_index, &ip_addr_v6(dst));
1422 get_mr_and_local_iface_ip (lisp_cp_main_t *lcm, ip_address_t * mr_ip,
1423 ip_address_t * sloc)
1426 ip_adjacency_t * adj;
1427 ip_interface_address_t * ia = 0;
1428 ip_lookup_main_t * lm;
1429 ip4_address_t * l4 = 0;
1430 ip6_address_t * l6 = 0;
1431 ip_address_t * mrit;
1433 if (vec_len(lcm->map_resolvers) == 0)
1435 clib_warning("No map-resolver configured");
1439 /* find the first mr ip we have a route to and the ip of the
1440 * iface that has a route to it */
1441 vec_foreach(mrit, lcm->map_resolvers)
1443 lm = ip_addr_version (mrit) == IP4 ?
1444 &lcm->im4->lookup_main : &lcm->im6->lookup_main;
1446 adj_index = ip_fib_lookup_with_table (lcm, 0, mrit);
1447 adj = ip_get_adjacency (lm, adj_index);
1452 if (adj->lookup_next_index == IP_LOOKUP_NEXT_ARP)
1454 ia = pool_elt_at_index(lm->if_address_pool, adj->if_address_index);
1455 if (ip_addr_version(mrit) == IP4)
1457 l4 = ip_interface_address_get_address (lm, ia);
1461 l6 = ip_interface_address_get_address (lm, ia);
1464 else if (adj->lookup_next_index == IP_LOOKUP_NEXT_REWRITE)
1466 /* find sw_if_index in rewrite header */
1467 u32 sw_if_index = adj->rewrite_header.sw_if_index;
1469 /* find suitable address */
1470 if (ip_addr_version(mrit) == IP4)
1472 /* find the first ip address */
1473 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1474 sw_if_index, 1 /* unnumbered */,
1476 l4 = ip_interface_address_get_address (&lcm->im4->lookup_main,
1483 /* find the first ip address */
1484 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1485 sw_if_index, 1 /* unnumbered */,
1487 l6 = ip_interface_address_get_address (&lcm->im6->lookup_main,
1496 ip_addr_v4(sloc).as_u32 = l4->as_u32;
1497 ip_addr_version(sloc) = IP4;
1498 ip_address_copy(mr_ip, mrit);
1503 clib_memcpy (&ip_addr_v6(sloc), l6, sizeof(*l6));
1504 ip_addr_version(sloc) = IP6;
1505 ip_address_copy(mr_ip, mrit);
1510 clib_warning("Can't find map-resolver and local interface ip!");
1514 static gid_address_t *
1515 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
1522 ip_interface_address_t * ia = 0;
1523 gid_address_t gid_data, * gid = &gid_data;
1524 gid_address_t * rlocs = 0;
1525 ip_prefix_t * ippref = &gid_address_ippref (gid);
1526 ip_address_t * rloc = &ip_prefix_addr (ippref);
1528 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
1529 for (i = 0; i < vec_len(loc_set->locator_indices); i++)
1531 loc_indexp = vec_elt_at_index(loc_set->locator_indices, i);
1532 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
1534 ip_addr_version(rloc) = IP4;
1535 /* Add ipv4 locators first TODO sort them */
1536 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1537 loc->sw_if_index, 1 /* unnumbered */,
1539 l4 = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
1540 ip_addr_v4 (rloc) = l4[0];
1541 ip_prefix_len (ippref) = 32;
1542 vec_add1 (rlocs, gid[0]);
1545 ip_addr_version(rloc) = IP6;
1546 /* Add ipv6 locators */
1547 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1548 loc->sw_if_index, 1 /* unnumbered */,
1550 l6 = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
1551 ip_addr_v6 (rloc) = l6[0];
1552 ip_prefix_len (ippref) = 128;
1553 vec_add1 (rlocs, gid[0]);
1559 static vlib_buffer_t *
1560 build_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm,
1561 gid_address_t * seid, gid_address_t * deid,
1562 locator_set_t * loc_set, ip_address_t * mr_ip,
1563 ip_address_t * sloc, u8 is_smr_invoked,
1564 u64 *nonce_res, u32 * bi_res)
1568 gid_address_t * rlocs = 0;
1570 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
1572 clib_warning ("Can't allocate buffer for Map-Request!");
1576 b = vlib_get_buffer (vm, bi);
1578 /* leave some space for the encap headers */
1579 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
1582 rlocs = build_itr_rloc_list (lcm, loc_set);
1585 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked, nonce_res);
1587 /* push ecm: udp-ip-lisp */
1588 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
1590 /* push outer ip header */
1591 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
1602 send_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm,
1603 gid_address_t * seid, gid_address_t * deid,
1606 u32 next_index, bi = 0, * to_next, map_index;
1610 locator_set_t * loc_set;
1612 pending_map_request_t * pmr;
1613 ip_address_t mr_ip, sloc;
1615 /* get locator-set for seid */
1616 if (!lcm->lisp_pitr)
1618 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
1619 if (map_index == ~0)
1621 clib_warning("No local mapping found in eid-table for %U!",
1622 format_gid_address, seid);
1626 map = pool_elt_at_index (lcm->mapping_pool, map_index);
1630 clib_warning("Mapping found for src eid %U is not marked as local!",
1631 format_gid_address, seid);
1637 map_index = lcm->pitr_map_index;
1638 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
1641 loc_set = pool_elt_at_index (lcm->locator_set_pool, map->locator_set_index);
1643 /* get local iface ip to use in map-request XXX fib 0 for now*/
1644 get_mr_and_local_iface_ip (lcm, &mr_ip, &sloc);
1646 /* build the encapsulated map request */
1647 b = build_encapsulated_map_request (vm, lcm, seid, deid, loc_set, &mr_ip,
1648 &sloc, is_smr_invoked, &nonce, &bi);
1653 /* set fib index and lookup node */
1654 vnet_buffer(b)->sw_if_index[VLIB_TX] = ~0;
1655 next_index = (ip_addr_version(&mr_ip) == IP4) ?
1656 ip4_lookup_node.index : ip6_lookup_node.index;
1658 f = vlib_get_frame_to_node (vm, next_index);
1660 /* Enqueue the packet */
1661 to_next = vlib_frame_vector_args (f);
1664 vlib_put_frame_to_node (vm, next_index, f);
1666 /* add map-request to pending requests table */
1667 pool_get(lcm->pending_map_requests_pool, pmr);
1668 gid_address_copy (&pmr->src, seid);
1669 gid_address_copy (&pmr->dst, deid);
1670 pmr->src_mapping_index = map_index;
1671 hash_set(lcm->pending_map_requests_by_nonce, nonce,
1672 pmr - lcm->pending_map_requests_pool);
1676 get_src_and_dst (void *hdr, ip_address_t * src, ip_address_t *dst)
1678 ip4_header_t * ip4 = hdr;
1681 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
1683 ip_addr_v4(src).as_u32 = ip4->src_address.as_u32;
1684 ip_addr_version(src) = IP4;
1685 ip_addr_v4(dst).as_u32 = ip4->dst_address.as_u32;
1686 ip_addr_version(dst) = IP4;
1691 clib_memcpy (&ip_addr_v6(src), &ip6->src_address, sizeof(ip6->src_address));
1692 ip_addr_version(src) = IP6;
1693 clib_memcpy (&ip_addr_v6(dst), &ip6->dst_address, sizeof(ip6->dst_address));
1694 ip_addr_version(dst) = IP6;
1699 lisp_cp_lookup (vlib_main_t * vm, vlib_node_runtime_t * node,
1700 vlib_frame_t * from_frame)
1702 u32 * from, * to_next_drop, di, si;
1703 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main();
1704 u32 pkts_mapped = 0;
1705 uword n_left_from, n_left_to_next_drop;
1707 from = vlib_frame_vector_args (from_frame);
1708 n_left_from = from_frame->n_vectors;
1710 while (n_left_from > 0)
1712 vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
1713 to_next_drop, n_left_to_next_drop);
1715 while (n_left_from > 0 && n_left_to_next_drop > 0)
1720 gid_address_t src, dst;
1721 ip_prefix_t * spref, * dpref;
1723 gid_address_type (&src) = GID_ADDR_IP_PREFIX;
1724 spref = &gid_address_ippref(&src);
1725 gid_address_type (&dst) = GID_ADDR_IP_PREFIX;
1726 dpref = &gid_address_ippref(&dst);
1731 to_next_drop[0] = pi0;
1733 n_left_to_next_drop -= 1;
1735 p0 = vlib_get_buffer (vm, pi0);
1736 p0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
1738 /* src/dst eid pair */
1739 ip0 = vlib_buffer_get_current (p0);
1740 get_src_and_dst (ip0, &ip_prefix_addr(spref), &ip_prefix_addr(dpref));
1741 ip_prefix_len(spref) = ip_address_max_len (ip_prefix_version(spref));
1742 ip_prefix_len(dpref) = ip_address_max_len (ip_prefix_version(dpref));
1744 /* if we have remote mapping for destination already in map-chache
1745 add forwarding tunnel directly. If not send a map-request */
1746 di = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
1749 mapping_t * m = vec_elt_at_index (lcm->mapping_pool, di);
1750 /* send a map-request also in case of negative mapping entry
1751 with corresponding action */
1752 if (m->action == ACTION_SEND_MAP_REQUEST)
1754 /* send map-request */
1755 send_encapsulated_map_request (vm, lcm, &src, &dst, 0);
1760 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1764 add_fwd_entry (lcm, si, di);
1770 /* send map-request */
1771 send_encapsulated_map_request (vm, lcm, &src, &dst, 0);
1775 if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED))
1777 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, p0,
1780 memset(tr, 0, sizeof(*tr));
1781 gid_address_copy (&tr->dst_eid, &dst);
1782 if (vec_len(lcm->map_resolvers) > 0)
1784 clib_memcpy (&tr->map_resolver_ip,
1785 vec_elt_at_index(lcm->map_resolvers, 0),
1786 sizeof(ip_address_t));
1791 vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, n_left_to_next_drop);
1793 vlib_node_increment_counter (vm, node->node_index,
1794 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
1796 return from_frame->n_vectors;
1799 VLIB_REGISTER_NODE (lisp_cp_lookup_node) = {
1800 .function = lisp_cp_lookup,
1801 .name = "lisp-cp-lookup",
1802 .vector_size = sizeof (u32),
1803 .format_trace = format_lisp_cp_lookup_trace,
1804 .type = VLIB_NODE_TYPE_INTERNAL,
1806 .n_errors = LISP_CP_LOOKUP_N_ERROR,
1807 .error_strings = lisp_cp_lookup_error_strings,
1809 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
1812 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
1813 [LISP_CP_LOOKUP_NEXT_IP4_LOOKUP] = "ip4-lookup",
1814 [LISP_CP_LOOKUP_NEXT_IP6_LOOKUP] = "ip6-lookup",
1818 /* lisp_cp_input statistics */
1819 #define foreach_lisp_cp_input_error \
1821 _(MAP_REPLIES_RECEIVED, "map-replies received")
1823 static char * lisp_cp_input_error_strings[] = {
1824 #define _(sym,string) string,
1825 foreach_lisp_cp_input_error
1831 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
1832 foreach_lisp_cp_input_error
1834 LISP_CP_INPUT_N_ERROR,
1835 } lisp_cp_input_error_t;
1839 LISP_CP_INPUT_NEXT_DROP,
1840 LISP_CP_INPUT_N_NEXT,
1841 } lisp_cp_input_next_t;
1845 gid_address_t dst_eid;
1846 ip4_address_t map_resolver_ip;
1847 } lisp_cp_input_trace_t;
1850 format_lisp_cp_input_trace (u8 * s, va_list * args)
1852 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1853 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1854 CLIB_UNUSED(lisp_cp_input_trace_t * t) = va_arg (*args, lisp_cp_input_trace_t *);
1856 s = format (s, "LISP-CP-INPUT: TODO");
1860 ip_interface_address_t *
1861 ip_interface_get_first_interface_address (ip_lookup_main_t *lm, u32 sw_if_index,
1864 vnet_main_t *vnm = vnet_get_main ();
1865 vnet_sw_interface_t * swif = vnet_get_sw_interface (vnm, sw_if_index);
1866 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
1867 sw_if_index = swif->unnumbered_sw_if_index;
1869 (vec_len((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
1870 vec_elt((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
1872 return pool_elt_at_index((lm)->if_address_pool, ia);
1876 ip_interface_get_first_ip_addres (ip_lookup_main_t *lm, u32 sw_if_index,
1879 ip_interface_address_t * ia = ip_interface_get_first_interface_address (
1880 lm, sw_if_index, loop);
1881 return ip_interface_address_get_address (lm, ia);
1885 del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index,
1888 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, * a = &_a;
1889 fwd_entry_t * fe = 0;
1891 memset(a, 0, sizeof(*a));
1893 feip = hash_get(lcm->fwd_entry_by_mapping_index, dst_map_index);
1897 fe = pool_elt_at_index(lcm->fwd_entry_pool, feip[0]);
1899 /* delete dp fwd entry */
1902 a->dlocator = fe->dst_loc;
1903 a->slocator = fe->src_loc;
1904 a->vni = gid_address_vni(&a->deid);
1905 gid_address_copy(&a->deid, &fe->deid);
1907 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
1909 /* delete entry in fwd table */
1910 hash_unset(lcm->fwd_entry_by_mapping_index, dst_map_index);
1911 pool_put(lcm->fwd_entry_pool, fe);
1915 add_fwd_entry (lisp_cp_main_t* lcm, u32 src_map_index, u32 dst_map_index)
1917 mapping_t * src_map, * dst_map;
1918 locator_set_t * dst_ls, * src_ls;
1919 u32 i, minp = ~0, sw_if_index;
1921 uword * feip = 0, * tidp;
1923 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, * a = &_a;
1925 memset (a, 0, sizeof(*a));
1927 /* remove entry if it already exists */
1928 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
1930 del_fwd_entry (lcm, src_map_index, dst_map_index);
1932 src_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
1933 dst_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
1935 gid_address_copy (&a->deid, &dst_map->eid);
1936 a->vni = gid_address_vni(&a->deid);
1938 tidp = hash_get(lcm->table_id_by_vni, a->vni);
1941 clib_warning("vni %d not associated to a vrf!", a->vni);
1944 a->table_id = tidp[0];
1946 /* XXX simple forwarding policy: first lowest (value) priority locator */
1947 dst_ls = pool_elt_at_index (lcm->locator_set_pool,
1948 dst_map->locator_set_index);
1949 for (i = 0; i < vec_len (dst_ls->locator_indices); i++)
1951 u32 li = vec_elt (dst_ls->locator_indices, i);
1952 locator_t * l = pool_elt_at_index (lcm->locator_pool, li);
1953 if (l->priority < minp && gid_address_type(&l->address)
1954 == GID_ADDR_IP_PREFIX)
1962 src_ls = pool_elt_at_index(lcm->locator_set_pool,
1963 src_map->locator_set_index);
1964 for (i = 0; i < vec_len(src_ls->locator_indices); i++)
1966 u32 li = vec_elt (src_ls->locator_indices, i);
1967 locator_t * sl = pool_elt_at_index (lcm->locator_pool, li);
1969 if (ip_addr_version(&gid_address_ip(&dl->address)) == IP4)
1972 l4 = ip_interface_get_first_ip_addres (&lcm->im4->lookup_main,
1974 1 /* unnumbered */);
1975 ip_addr_v4(&a->slocator) = *l4;
1976 ip_addr_version(&a->slocator) = IP4;
1981 l6 = ip_interface_get_first_ip_addres (&lcm->im6->lookup_main,
1983 1 /* unnumbered */);
1984 ip_addr_v6(&a->slocator) = *l6;
1985 ip_addr_version(&a->slocator) = IP6;
1990 /* insert data plane forwarding entry */
1993 a->dlocator = gid_address_ip(&dl->address);
1997 a->action = dst_map->action;
2001 u8 ipver = ip_prefix_version(&gid_address_ippref(&a->deid));
2002 a->decap_next_index = (ipver == IP4) ?
2003 LISP_GPE_INPUT_NEXT_IP4_INPUT : LISP_GPE_INPUT_NEXT_IP6_INPUT;
2005 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
2007 /* add tunnel to fwd entry table XXX check return value from DP insertion */
2008 pool_get (lcm->fwd_entry_pool, fe);
2009 fe->dst_loc = a->dlocator;
2010 fe->src_loc = a->slocator;
2011 gid_address_copy (&fe->deid, &a->deid);
2012 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
2013 fe - lcm->fwd_entry_pool);
2016 /* return 0 if the two locator sets are identical 1 otherwise */
2018 compare_locators (lisp_cp_main_t *lcm, u32 * old_ls_indexes,
2019 locator_t * new_locators)
2022 locator_t * old_loc, * new_loc;
2024 if (vec_len (old_ls_indexes) != vec_len(new_locators))
2027 for (i = 0; i < vec_len(new_locators); i++)
2029 old_li = vec_elt(old_ls_indexes, i);
2030 old_loc = pool_elt_at_index(lcm->locator_pool, old_li);
2032 new_loc = vec_elt_at_index(new_locators, i);
2034 if (locator_cmp (old_loc, new_loc))
2041 process_map_reply (lisp_cp_main_t * lcm, vlib_buffer_t * b)
2043 mapping_t * old_map;
2045 u32 len = 0, i, ls_index = 0;
2047 vnet_lisp_add_del_locator_set_args_t _ls_arg, * ls_arg = &_ls_arg;
2048 vnet_lisp_add_del_mapping_args_t _m_args, * m_args = &_m_args;
2049 pending_map_request_t * pmr;
2051 map_reply_hdr_t * mrep_hdr;
2053 u32 dst_map_index, mi;
2056 mrep_hdr = vlib_buffer_get_current (b);
2058 /* Check pending requests table and nonce */
2059 nonce = MREP_NONCE(mrep_hdr);
2060 pmr_index = hash_get(lcm->pending_map_requests_by_nonce, nonce);
2063 clib_warning("No pending map-request entry with nonce %lu!", nonce);
2066 pmr = pool_elt_at_index(lcm->pending_map_requests_pool, pmr_index[0]);
2068 vlib_buffer_pull (b, sizeof(*mrep_hdr));
2070 for (i = 0; i < MREP_REC_COUNT(mrep_hdr); i++)
2072 memset (ls_arg, 0, sizeof(*ls_arg));
2073 memset (m_args, 0, sizeof(*m_args));
2075 h = vlib_buffer_get_current (b);
2076 m_args->ttl = clib_net_to_host_u32 (MAP_REC_TTL(h));
2077 m_args->action = MAP_REC_ACTION(h);
2078 m_args->authoritative = MAP_REC_AUTH(h);
2080 len = lisp_msg_parse_mapping_record (b, &m_args->deid, &ls_arg->locators,
2084 clib_warning ("Failed to parse mapping record!");
2085 vec_foreach (loc, ls_arg->locators)
2089 vec_free(ls_arg->locators);
2093 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &m_args->deid);
2094 old_map = mi != ~0 ? pool_elt_at_index(lcm->mapping_pool, mi) : 0;
2096 /* if mapping already exists, decide if locators (and forwarding) should
2097 * be updated and be done */
2098 if (old_map != 0 && !gid_address_cmp (&old_map->eid, &m_args->deid))
2100 locator_set_t * old_ls;
2102 /* update mapping attributes */
2103 old_map->action = m_args->action;
2104 old_map->authoritative = m_args->authoritative;
2105 old_map->ttl = m_args->ttl;
2107 old_ls = pool_elt_at_index(lcm->locator_set_pool,
2108 old_map->locator_set_index);
2109 /* if the two locators are not equal, update them and forwarding
2110 * otherwise there's nothing to be done */
2111 if (compare_locators (lcm, old_ls->locator_indices, ls_arg->locators))
2113 /* set locator-set index to overwrite */
2115 ls_arg->index = old_map->locator_set_index;
2116 vnet_lisp_add_del_locator_set (ls_arg, 0);
2117 add_fwd_entry (lcm, pmr->src_mapping_index, mi);
2123 /* add locator-set */
2126 vnet_lisp_add_del_locator_set (ls_arg, &ls_index);
2130 m_args->locator_set_index = ls_index;
2131 vnet_lisp_add_del_mapping (m_args, &dst_map_index);
2133 /* add forwarding tunnel */
2134 add_fwd_entry (lcm, pmr->src_mapping_index, dst_map_index);
2136 vec_free(ls_arg->locators);
2139 /* remove pending map request entry */
2140 hash_unset(lcm->pending_map_requests_by_nonce, nonce);
2141 pool_put(lcm->pending_map_requests_pool, pmr);
2145 process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm, vlib_buffer_t * b)
2147 map_request_hdr_t * mreq_hdr;
2148 gid_address_t src, dst;
2151 gid_address_t * itr_rlocs = 0, * rloc;
2153 mreq_hdr = vlib_buffer_get_current (b);
2154 vlib_buffer_pull (b, sizeof(*mreq_hdr));
2156 // nonce = MREQ_NONCE(mreq_hdr);
2158 if (!MREQ_SMR(mreq_hdr)) {
2159 clib_warning("Only SMR Map-Requests supported for now!");
2164 len = lisp_msg_parse_addr (b, &src);
2168 /* for now we don't do anything with the itr's rlocs */
2169 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs, MREQ_ITR_RLOC_COUNT(mreq_hdr) + 1);
2173 /* TODO: RLOCs are currently unused, so free them for now */
2174 vec_foreach (rloc, itr_rlocs)
2176 gid_address_free (rloc);
2179 /* parse eid records and send SMR-invoked map-requests */
2180 for (i = 0; i < MREQ_REC_COUNT(mreq_hdr); i++)
2182 memset(&dst, 0, sizeof(dst));
2183 len = lisp_msg_parse_eid_rec (b, &dst);
2186 clib_warning("Can't parse map-request EID-record");
2189 /* send SMR-invoked map-requests */
2190 send_encapsulated_map_request (vm, lcm, &dst, &src, /* invoked */ 1);
2195 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
2196 vlib_frame_t * from_frame)
2198 u32 n_left_from, * from, * to_next_drop;
2199 lisp_msg_type_e type;
2200 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
2202 from = vlib_frame_vector_args (from_frame);
2203 n_left_from = from_frame->n_vectors;
2206 while (n_left_from > 0)
2208 u32 n_left_to_next_drop;
2210 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
2211 to_next_drop, n_left_to_next_drop);
2212 while (n_left_from > 0 && n_left_to_next_drop > 0)
2220 to_next_drop[0] = bi0;
2222 n_left_to_next_drop -= 1;
2224 b0 = vlib_get_buffer (vm, bi0);
2226 type = lisp_msg_type(vlib_buffer_get_current (b0));
2229 case LISP_MAP_REPLY:
2230 process_map_reply (lcm, b0);
2232 case LISP_MAP_REQUEST:
2233 process_map_request(vm, lcm, b0);
2236 clib_warning("Unsupported LISP message type %d", type);
2240 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
2242 if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
2248 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP, n_left_to_next_drop);
2250 return from_frame->n_vectors;
2253 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
2254 .function = lisp_cp_input,
2255 .name = "lisp-cp-input",
2256 .vector_size = sizeof (u32),
2257 .format_trace = format_lisp_cp_input_trace,
2258 .type = VLIB_NODE_TYPE_INTERNAL,
2260 .n_errors = LISP_CP_INPUT_N_ERROR,
2261 .error_strings = lisp_cp_input_error_strings,
2263 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2266 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2271 lisp_cp_init (vlib_main_t *vm)
2273 lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
2274 clib_error_t * error = 0;
2276 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
2279 lcm->im4 = &ip4_main;
2280 lcm->im6 = &ip6_main;
2281 lcm->vlib_main = vm;
2282 lcm->vnet_main = vnet_get_main();
2284 gid_dictionary_init (&lcm->mapping_index_by_gid);
2286 /* default vrf mapped to vni 0 */
2287 hash_set(lcm->table_id_by_vni, 0, 0);
2289 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
2290 lisp_cp_input_node.index, 1 /* is_ip4 */);
2291 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
2292 lisp_cp_input_node.index, 0 /* is_ip4 */);
2297 VLIB_INIT_FUNCTION(lisp_cp_init);