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-gpe/lisp_gpe_fwd_entry.h>
17 #include <vnet/lisp-gpe/lisp_gpe_adjacency.h>
18 #include <vnet/lisp-gpe/lisp_gpe_tenant.h>
19 #include <vnet/lisp-cp/lisp_cp_dpo.h>
20 #include <vnet/fib/fib_table.h>
21 #include <vnet/fib/fib_entry.h>
22 #include <vnet/fib/fib_path_list.h>
23 #include <vnet/fib/ip6_fib.h>
24 #include <vnet/fib/ip4_fib.h>
25 #include <vnet/dpo/drop_dpo.h>
26 #include <vnet/dpo/lookup_dpo.h>
27 #include <vnet/dpo/load_balance.h>
28 #include <vnet/adj/adj_midchain.h>
31 * @brief Add route to IP4 or IP6 Destination FIB.
33 * Add a route to the destination FIB that results in the lookup
34 * in the SRC FIB. The SRC FIB is created is it does not yet exist.
36 * @param[in] dst_table_id Destination FIB Table-ID
37 * @param[in] dst_prefix Destination IP prefix.
39 * @return src_fib_index The index/ID of the SRC FIB created.
42 ip_dst_fib_add_route (u32 dst_fib_index, const ip_prefix_t * dst_prefix)
44 fib_node_index_t src_fib_index;
45 fib_prefix_t dst_fib_prefix;
46 fib_node_index_t dst_fei;
48 ASSERT (NULL != dst_prefix);
50 ip_prefix_to_fib_prefix (dst_prefix, &dst_fib_prefix);
53 * lookup the destination prefix in the VRF table and retrieve the
54 * LISP associated data
56 dst_fei = fib_table_lookup_exact_match (dst_fib_index, &dst_fib_prefix);
59 * If the FIB entry is not present, or not LISP sourced, add it
61 if (dst_fei == FIB_NODE_INDEX_INVALID ||
62 NULL == fib_entry_get_source_data (dst_fei, FIB_SOURCE_LISP))
64 dpo_id_t src_lkup_dpo = DPO_NULL;
66 /* create a new src FIB. */
68 fib_table_create_and_lock (dst_fib_prefix.fp_proto,
69 "LISP-src for [%d,%U]",
71 format_fib_prefix, &dst_fib_prefix);
74 * create a data-path object to perform the source address lookup
77 lookup_dpo_add_or_lock_w_fib_index (src_fib_index,
78 (ip_prefix_version (dst_prefix) ==
81 LOOKUP_INPUT_SRC_ADDR,
82 LOOKUP_TABLE_FROM_CONFIG,
86 * add the entry to the destination FIB that uses the lookup DPO
88 dst_fei = fib_table_entry_special_dpo_add (dst_fib_index,
91 FIB_ENTRY_FLAG_EXCLUSIVE,
95 * the DPO is locked by the FIB entry, and we have no further
98 dpo_unlock (&src_lkup_dpo);
101 * save the SRC FIB index on the entry so we can retrieve it for
104 fib_entry_set_source_data (dst_fei, FIB_SOURCE_LISP, &src_fib_index);
109 * destination FIB entry already present
111 src_fib_index = *(u32 *) fib_entry_get_source_data (dst_fei,
115 return (src_fib_index);
119 * @brief Del route to IP4 or IP6 SD FIB.
121 * Remove routes from both destination and source FIBs.
123 * @param[in] src_fib_index The index/ID of the SRC FIB
124 * @param[in] src_prefix Source IP prefix.
125 * @param[in] dst_fib_index The index/ID of the DST FIB
126 * @param[in] dst_prefix Destination IP prefix.
129 ip_src_dst_fib_del_route (u32 src_fib_index,
130 const ip_prefix_t * src_prefix,
131 u32 dst_fib_index, const ip_prefix_t * dst_prefix)
133 fib_prefix_t dst_fib_prefix, src_fib_prefix;
135 ASSERT (NULL != dst_prefix);
136 ASSERT (NULL != src_prefix);
138 ip_prefix_to_fib_prefix (dst_prefix, &dst_fib_prefix);
139 ip_prefix_to_fib_prefix (src_prefix, &src_fib_prefix);
141 fib_table_entry_delete (src_fib_index, &src_fib_prefix, FIB_SOURCE_LISP);
143 if (0 == fib_table_get_num_entries (src_fib_index,
144 src_fib_prefix.fp_proto,
148 * there's nothing left, unlock the source FIB and the
151 fib_table_entry_special_remove (dst_fib_index,
152 &dst_fib_prefix, FIB_SOURCE_LISP);
153 fib_table_unlock (src_fib_index, src_fib_prefix.fp_proto);
158 * @brief Add route to IP4 or IP6 SRC FIB.
160 * Adds a route to in the LISP SRC FIB with the result of the route
161 * being the DPO passed.
163 * @param[in] src_fib_index The index/ID of the SRC FIB
164 * @param[in] src_prefix Source IP prefix.
165 * @param[in] src_dpo The DPO the route will link to.
168 ip_src_fib_add_route_w_dpo (u32 src_fib_index,
169 const ip_prefix_t * src_prefix,
170 const dpo_id_t * src_dpo)
172 fib_prefix_t src_fib_prefix;
174 ip_prefix_to_fib_prefix (src_prefix, &src_fib_prefix);
177 * add the entry into the source fib.
179 fib_node_index_t src_fei;
181 src_fei = fib_table_lookup_exact_match (src_fib_index, &src_fib_prefix);
183 if (FIB_NODE_INDEX_INVALID == src_fei ||
184 !fib_entry_is_sourced (src_fei, FIB_SOURCE_LISP))
186 fib_table_entry_special_dpo_add (src_fib_index,
189 FIB_ENTRY_FLAG_EXCLUSIVE, src_dpo);
193 static fib_route_path_t *
194 lisp_gpe_mk_fib_paths (const lisp_fwd_path_t * paths)
196 const lisp_gpe_adjacency_t *ladj;
197 fib_route_path_t *rpaths = NULL;
201 vec_validate (rpaths, vec_len (paths) - 1);
203 best_priority = paths[0].priority;
205 vec_foreach_index (ii, paths)
207 if (paths[0].priority != best_priority)
210 ladj = lisp_gpe_adjacency_get (paths[ii].lisp_adj);
212 ip_address_to_46 (&ladj->remote_rloc,
213 &rpaths[ii].frp_addr, &rpaths[ii].frp_proto);
215 rpaths[ii].frp_sw_if_index = ladj->sw_if_index;
216 rpaths[ii].frp_weight = (paths[ii].weight ? paths[ii].weight : 1);
217 rpaths[ii].frp_label = MPLS_LABEL_INVALID;
220 ASSERT (0 != vec_len (rpaths));
226 * @brief Add route to IP4 or IP6 SRC FIB.
228 * Adds a route to in the LISP SRC FIB for the tunnel.
230 * @param[in] src_fib_index The index/ID of the SRC FIB
231 * @param[in] src_prefix Source IP prefix.
232 * @param[in] paths The paths from which to construct the
236 ip_src_fib_add_route (u32 src_fib_index,
237 const ip_prefix_t * src_prefix,
238 const lisp_fwd_path_t * paths)
240 fib_prefix_t src_fib_prefix;
241 fib_route_path_t *rpaths;
243 ip_prefix_to_fib_prefix (src_prefix, &src_fib_prefix);
245 rpaths = lisp_gpe_mk_fib_paths (paths);
247 fib_table_entry_update (src_fib_index,
249 FIB_SOURCE_LISP, FIB_ENTRY_FLAG_NONE, rpaths);
255 create_fib_entries (lisp_gpe_fwd_entry_t * lfe)
259 dproto = (ip_prefix_version (&lfe->key->rmt.ippref) == IP4 ?
260 FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
262 lfe->src_fib_index = ip_dst_fib_add_route (lfe->eid_fib_index,
263 &lfe->key->rmt.ippref);
265 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE == lfe->type)
267 dpo_id_t dpo = DPO_NULL;
272 /* TODO update timers? */
273 case LISP_FORWARD_NATIVE:
274 /* TODO check if route/next-hop for eid exists in fib and add
275 * more specific for the eid with the next-hop found */
276 case LISP_SEND_MAP_REQUEST:
277 /* insert tunnel that always sends map-request */
278 dpo_copy (&dpo, lisp_cp_dpo_get (dproto));
281 /* for drop fwd entries, just add route, no need to add encap tunnel */
282 dpo_copy (&dpo, drop_dpo_get (dproto));
285 ip_src_fib_add_route_w_dpo (lfe->src_fib_index,
286 &lfe->key->lcl.ippref, &dpo);
291 ip_src_fib_add_route (lfe->src_fib_index,
292 &lfe->key->lcl.ippref, lfe->paths);
297 delete_fib_entries (lisp_gpe_fwd_entry_t * lfe)
299 ip_src_dst_fib_del_route (lfe->src_fib_index,
300 &lfe->key->lcl.ippref,
301 lfe->eid_fib_index, &lfe->key->rmt.ippref);
305 gid_to_dp_address (gid_address_t * g, dp_address_t * d)
307 switch (gid_address_type (g))
309 case GID_ADDR_IP_PREFIX:
310 case GID_ADDR_SRC_DST:
311 ip_prefix_copy (&d->ippref, &gid_address_ippref (g));
312 d->type = FID_ADDR_IP_PREF;
316 mac_copy (&d->mac, &gid_address_mac (g));
317 d->type = FID_ADDR_MAC;
322 static lisp_gpe_fwd_entry_t *
323 find_fwd_entry (lisp_gpe_main_t * lgm,
324 vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
325 lisp_gpe_fwd_entry_key_t * key)
329 memset (key, 0, sizeof (*key));
331 if (GID_ADDR_IP_PREFIX == gid_address_type (&a->rmt_eid))
334 * the ip version of the source is not set to ip6 when the
335 * source is all zeros. force it.
337 ip_prefix_version (&gid_address_ippref (&a->lcl_eid)) =
338 ip_prefix_version (&gid_address_ippref (&a->rmt_eid));
341 gid_to_dp_address (&a->rmt_eid, &key->rmt);
342 gid_to_dp_address (&a->lcl_eid, &key->lcl);
345 p = hash_get_mem (lgm->lisp_gpe_fwd_entries, key);
349 return (pool_elt_at_index (lgm->lisp_fwd_entry_pool, p[0]));
355 lisp_gpe_fwd_entry_path_sort (void *a1, void *a2)
357 lisp_fwd_path_t *p1 = a1, *p2 = a2;
359 return (p1->priority - p2->priority);
363 lisp_gpe_fwd_entry_mk_paths (lisp_gpe_fwd_entry_t * lfe,
364 vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
366 const lisp_gpe_tenant_t *lt;
367 lisp_fwd_path_t *path;
370 lt = lisp_gpe_tenant_get (lfe->tenant);
371 vec_validate (lfe->paths, vec_len (a->locator_pairs) - 1);
373 vec_foreach_index (index, a->locator_pairs)
375 path = &lfe->paths[index];
377 path->priority = a->locator_pairs[index].priority;
378 path->weight = a->locator_pairs[index].weight;
381 lisp_gpe_adjacency_find_or_create_and_lock (&a->locator_pairs
386 vec_sort_with_function (lfe->paths, lisp_gpe_fwd_entry_path_sort);
390 * @brief Add/Delete LISP IP forwarding entry.
392 * creation of forwarding entries for IP LISP overlay:
394 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
395 * @param[in] a Parameters for building the forwarding entry.
397 * @return 0 on success.
400 add_ip_fwd_entry (lisp_gpe_main_t * lgm,
401 vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
403 lisp_gpe_fwd_entry_key_t key;
404 lisp_gpe_fwd_entry_t *lfe;
405 fib_protocol_t fproto;
407 lfe = find_fwd_entry (lgm, a, &key);
410 /* don't support updates */
411 return VNET_API_ERROR_INVALID_VALUE;
413 pool_get (lgm->lisp_fwd_entry_pool, lfe);
414 memset (lfe, 0, sizeof (*lfe));
415 lfe->key = clib_mem_alloc (sizeof (key));
416 memcpy (lfe->key, &key, sizeof (key));
418 hash_set_mem (lgm->lisp_gpe_fwd_entries, lfe->key,
419 lfe - lgm->lisp_fwd_entry_pool);
421 fproto = (IP4 == ip_prefix_version (&fid_addr_ippref (&lfe->key->rmt)) ?
422 FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
424 lfe->type = (a->is_negative ?
425 LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE :
426 LISP_GPE_FWD_ENTRY_TYPE_NORMAL);
427 lfe->tenant = lisp_gpe_tenant_find_or_create (lfe->key->vni);
428 lfe->eid_table_id = a->table_id;
429 lfe->eid_fib_index = fib_table_find_or_create_and_lock (fproto,
432 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE != lfe->type)
434 lisp_gpe_fwd_entry_mk_paths (lfe, a);
437 create_fib_entries (lfe);
443 del_ip_fwd_entry_i (lisp_gpe_main_t * lgm, lisp_gpe_fwd_entry_t * lfe)
445 lisp_fwd_path_t *path;
446 fib_protocol_t fproto;
448 vec_foreach (path, lfe->paths)
450 lisp_gpe_adjacency_unlock (path->lisp_adj);
453 delete_fib_entries (lfe);
455 fproto = (IP4 == ip_prefix_version (&fid_addr_ippref (&lfe->key->rmt)) ?
456 FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
457 fib_table_unlock (lfe->eid_fib_index, fproto);
459 hash_unset_mem (lgm->lisp_gpe_fwd_entries, lfe->key);
460 clib_mem_free (lfe->key);
461 pool_put (lgm->lisp_fwd_entry_pool, lfe);
465 * @brief Add/Delete LISP IP forwarding entry.
467 * removal of forwarding entries for IP LISP overlay:
469 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
470 * @param[in] a Parameters for building the forwarding entry.
472 * @return 0 on success.
475 del_ip_fwd_entry (lisp_gpe_main_t * lgm,
476 vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
478 lisp_gpe_fwd_entry_key_t key;
479 lisp_gpe_fwd_entry_t *lfe;
481 lfe = find_fwd_entry (lgm, a, &key);
485 return VNET_API_ERROR_INVALID_VALUE;
487 del_ip_fwd_entry_i (lgm, lfe);
493 make_mac_fib_key (BVT (clib_bihash_kv) * kv, u16 bd_index, u8 src_mac[6],
496 kv->key[0] = (((u64) bd_index) << 48) | mac_to_u64 (dst_mac);
497 kv->key[1] = mac_to_u64 (src_mac);
502 * @brief Lookup L2 SD FIB entry
504 * Does a vni + dest + source lookup in the L2 LISP FIB. If the lookup fails
505 * it tries a second time with source set to 0 (i.e., a simple dest lookup).
507 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
508 * @param[in] bd_index Bridge domain index.
509 * @param[in] src_mac Source mac address.
510 * @param[in] dst_mac Destination mac address.
512 * @return index of mapping matching the lookup key.
515 lisp_l2_fib_lookup (lisp_gpe_main_t * lgm, u16 bd_index, u8 src_mac[6],
519 BVT (clib_bihash_kv) kv, value;
521 make_mac_fib_key (&kv, bd_index, src_mac, dst_mac);
522 rv = BV (clib_bihash_search_inline_2) (&lgm->l2_fib, &kv, &value);
524 /* no match, try with src 0, catch all for dst */
528 rv = BV (clib_bihash_search_inline_2) (&lgm->l2_fib, &kv, &value);
533 return lisp_gpe_main.l2_lb_cp_lkup.dpoi_index;
537 * @brief Add/del L2 SD FIB entry
539 * Inserts value in L2 FIB keyed by vni + dest + source. If entry is
540 * overwritten the associated value is returned.
542 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
543 * @param[in] bd_index Bridge domain index.
544 * @param[in] src_mac Source mac address.
545 * @param[in] dst_mac Destination mac address.
546 * @param[in] val Value to add.
547 * @param[in] is_add Add/del flag.
549 * @return ~0 or value of overwritten entry.
552 lisp_l2_fib_add_del_entry (u16 bd_index, u8 src_mac[6],
553 u8 dst_mac[6], const dpo_id_t * dpo, u8 is_add)
555 lisp_gpe_main_t *lgm = &lisp_gpe_main;
556 BVT (clib_bihash_kv) kv, value;
559 make_mac_fib_key (&kv, bd_index, src_mac, dst_mac);
561 if (BV (clib_bihash_search) (&lgm->l2_fib, &kv, &value) == 0)
562 old_val = value.value;
565 BV (clib_bihash_add_del) (&lgm->l2_fib, &kv, 0 /* is_add */ );
568 kv.value = dpo->dpoi_index;
569 BV (clib_bihash_add_del) (&lgm->l2_fib, &kv, 1 /* is_add */ );
574 #define L2_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
575 #define L2_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20)
578 l2_fib_init (lisp_gpe_main_t * lgm)
582 BV (clib_bihash_init) (&lgm->l2_fib, "l2 fib",
583 1 << max_log2 (L2_FIB_DEFAULT_HASH_NUM_BUCKETS),
584 L2_FIB_DEFAULT_HASH_MEMORY_SIZE);
587 * the result from a 'miss' in a L2 Table
589 lbi = load_balance_create (1, DPO_PROTO_ETHERNET, 0);
590 load_balance_set_bucket (lbi, 0, lisp_cp_dpo_get (DPO_PROTO_ETHERNET));
592 dpo_set (&lgm->l2_lb_cp_lkup, DPO_LOAD_BALANCE, DPO_PROTO_ETHERNET, lbi);
596 del_l2_fwd_entry_i (lisp_gpe_main_t * lgm, lisp_gpe_fwd_entry_t * lfe)
598 lisp_fwd_path_t *path;
600 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE != lfe->type)
602 vec_foreach (path, lfe->paths)
604 lisp_gpe_adjacency_unlock (path->lisp_adj);
606 fib_path_list_child_remove (lfe->l2.path_list_index,
607 lfe->l2.child_index);
610 lisp_l2_fib_add_del_entry (lfe->l2.eid_bd_index,
611 fid_addr_mac (&lfe->key->lcl),
612 fid_addr_mac (&lfe->key->rmt), NULL, 0);
614 hash_unset_mem (lgm->lisp_gpe_fwd_entries, lfe->key);
615 clib_mem_free (lfe->key);
616 pool_put (lgm->lisp_fwd_entry_pool, lfe);
620 * @brief Delete LISP L2 forwarding entry.
622 * Coordinates the removal of forwarding entries for L2 LISP overlay:
624 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
625 * @param[in] a Parameters for building the forwarding entry.
627 * @return 0 on success.
630 del_l2_fwd_entry (lisp_gpe_main_t * lgm,
631 vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
633 lisp_gpe_fwd_entry_key_t key;
634 lisp_gpe_fwd_entry_t *lfe;
636 lfe = find_fwd_entry (lgm, a, &key);
639 return VNET_API_ERROR_INVALID_VALUE;
641 del_l2_fwd_entry_i (lgm, lfe);
647 * @brief Construct and insert the forwarding information used by a L2 entry
650 lisp_gpe_l2_update_fwding (lisp_gpe_fwd_entry_t * lfe)
652 lisp_gpe_main_t *lgm = &lisp_gpe_main;
653 dpo_id_t dpo = DPO_NULL;
655 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE != lfe->type)
657 fib_path_list_contribute_forwarding (lfe->l2.path_list_index,
658 FIB_FORW_CHAIN_TYPE_ETHERNET,
660 dpo_copy (&dpo, &lfe->l2.dpo);
664 dpo_copy (&dpo, &lgm->l2_lb_cp_lkup);
667 /* add entry to l2 lisp fib */
668 lisp_l2_fib_add_del_entry (lfe->l2.eid_bd_index,
669 fid_addr_mac (&lfe->key->lcl),
670 fid_addr_mac (&lfe->key->rmt), &dpo, 1);
676 * @brief Add LISP L2 forwarding entry.
678 * Coordinates the creation of forwarding entries for L2 LISP overlay:
679 * creates lisp-gpe tunnel and injects new entry in Source/Dest L2 FIB.
681 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
682 * @param[in] a Parameters for building the forwarding entry.
684 * @return 0 on success.
687 add_l2_fwd_entry (lisp_gpe_main_t * lgm,
688 vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
690 lisp_gpe_fwd_entry_key_t key;
691 bd_main_t *bdm = &bd_main;
692 lisp_gpe_fwd_entry_t *lfe;
695 bd_indexp = hash_get (bdm->bd_index_by_bd_id, a->bd_id);
698 clib_warning ("bridge domain %d doesn't exist", a->bd_id);
702 lfe = find_fwd_entry (lgm, a, &key);
705 /* don't support updates */
706 return VNET_API_ERROR_INVALID_VALUE;
708 pool_get (lgm->lisp_fwd_entry_pool, lfe);
709 memset (lfe, 0, sizeof (*lfe));
710 lfe->key = clib_mem_alloc (sizeof (key));
711 memcpy (lfe->key, &key, sizeof (key));
713 hash_set_mem (lgm->lisp_gpe_fwd_entries, lfe->key,
714 lfe - lgm->lisp_fwd_entry_pool);
716 lfe->type = (a->is_negative ?
717 LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE :
718 LISP_GPE_FWD_ENTRY_TYPE_NORMAL);
719 lfe->l2.eid_bd_id = a->bd_id;
720 lfe->l2.eid_bd_index = bd_indexp[0];
721 lfe->tenant = lisp_gpe_tenant_find_or_create (lfe->key->vni);
723 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE != lfe->type)
725 fib_route_path_t *rpaths;
728 * Make the sorted array of LISP paths with their resp. adjacency
730 lisp_gpe_fwd_entry_mk_paths (lfe, a);
733 * From the LISP paths, construct a FIB path list that will
734 * contribute a load-balance.
736 rpaths = lisp_gpe_mk_fib_paths (lfe->paths);
738 lfe->l2.path_list_index =
739 fib_path_list_create (FIB_PATH_LIST_FLAG_NONE, rpaths);
742 * become a child of the path-list so we receive updates when
743 * its forwarding state changes. this includes an implicit lock.
745 lfe->l2.child_index =
746 fib_path_list_child_add (lfe->l2.path_list_index,
747 FIB_NODE_TYPE_LISP_GPE_FWD_ENTRY,
748 lfe - lgm->lisp_fwd_entry_pool);
752 lfe->action = a->action;
755 lisp_gpe_l2_update_fwding (lfe);
761 * @brief conver from the embedded fib_node_t struct to the LSIP entry
763 static lisp_gpe_fwd_entry_t *
764 lisp_gpe_fwd_entry_from_fib_node (fib_node_t * node)
766 return ((lisp_gpe_fwd_entry_t *) (((char *) node) -
767 STRUCT_OFFSET_OF (lisp_gpe_fwd_entry_t,
772 * @brief Function invoked during a backwalk of the FIB graph
774 static fib_node_back_walk_rc_t
775 lisp_gpe_fib_node_back_walk (fib_node_t * node,
776 fib_node_back_walk_ctx_t * ctx)
778 lisp_gpe_l2_update_fwding (lisp_gpe_fwd_entry_from_fib_node (node));
780 return (FIB_NODE_BACK_WALK_CONTINUE);
784 * @brief Get a fib_node_t struct from the index of a LISP fwd entry
787 lisp_gpe_fwd_entry_get_fib_node (fib_node_index_t index)
789 lisp_gpe_main_t *lgm = &lisp_gpe_main;
790 lisp_gpe_fwd_entry_t *lfe;
792 lfe = pool_elt_at_index (lgm->lisp_fwd_entry_pool, index);
794 return (&(lfe->node));
798 * @brief An indication from the graph that the last lock has gone
801 lisp_gpe_fwd_entry_fib_node_last_lock_gone (fib_node_t * node)
803 /* We don't manage the locks of the LISP objects via the graph, since
804 * this object has no children. so this is a no-op. */
808 * @brief Virtual function table to register with FIB for the LISP type
810 const static fib_node_vft_t lisp_fwd_vft = {
811 .fnv_get = lisp_gpe_fwd_entry_get_fib_node,
812 .fnv_last_lock = lisp_gpe_fwd_entry_fib_node_last_lock_gone,
813 .fnv_back_walk = lisp_gpe_fib_node_back_walk,
817 * @brief Forwarding entry create/remove dispatcher.
819 * Calls l2 or l3 forwarding entry add/del function based on input data.
821 * @param[in] a Forwarding entry parameters.
822 * @param[out] hw_if_indexp NOT USED
824 * @return 0 on success.
827 vnet_lisp_gpe_add_del_fwd_entry (vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
830 lisp_gpe_main_t *lgm = &lisp_gpe_main;
833 if (vnet_lisp_gpe_enable_disable_status () == 0)
835 clib_warning ("LISP is disabled!");
836 return VNET_API_ERROR_LISP_DISABLED;
839 type = gid_address_type (&a->rmt_eid);
842 case GID_ADDR_IP_PREFIX:
844 return add_ip_fwd_entry (lgm, a);
846 return del_ip_fwd_entry (lgm, a);
850 return add_l2_fwd_entry (lgm, a);
852 return del_l2_fwd_entry (lgm, a);
854 clib_warning ("Forwarding entries for type %d not supported!", type);
860 * @brief Flush all the forwrding entries
863 vnet_lisp_gpe_fwd_entry_flush (void)
865 lisp_gpe_main_t *lgm = &lisp_gpe_main;
866 lisp_gpe_fwd_entry_t *lfe;
869 pool_foreach (lfe, lgm->lisp_fwd_entry_pool,
871 switch (fid_addr_type(&lfe->key->rmt))
874 del_l2_fwd_entry_i (lgm, lfe);
876 case FID_ADDR_IP_PREF:
877 del_ip_fwd_entry_i (lgm, lfe);
885 format_lisp_fwd_path (u8 * s, va_list ap)
887 lisp_fwd_path_t *lfp = va_arg (ap, lisp_fwd_path_t *);
889 s = format (s, "pirority:%d weight:%d ", lfp->priority, lfp->weight);
890 s = format (s, "adj:[%U]\n",
891 format_lisp_gpe_adjacency,
892 lisp_gpe_adjacency_get (lfp->lisp_adj),
893 LISP_GPE_ADJ_FORMAT_FLAG_NONE);
898 typedef enum lisp_gpe_fwd_entry_format_flag_t_
900 LISP_GPE_FWD_ENTRY_FORMAT_NONE = (0 << 0),
901 LISP_GPE_FWD_ENTRY_FORMAT_DETAIL = (1 << 1),
902 } lisp_gpe_fwd_entry_format_flag_t;
906 format_lisp_gpe_fwd_entry (u8 * s, va_list ap)
908 lisp_gpe_main_t *lgm = &lisp_gpe_main;
909 lisp_gpe_fwd_entry_t *lfe = va_arg (ap, lisp_gpe_fwd_entry_t *);
910 lisp_gpe_fwd_entry_format_flag_t flags =
911 va_arg (ap, lisp_gpe_fwd_entry_format_flag_t);
913 s = format (s, "VNI:%d VRF:%d EID: %U -> %U [index:%d]",
914 lfe->key->vni, lfe->eid_table_id,
915 format_fid_address, &lfe->key->lcl,
916 format_fid_address, &lfe->key->rmt,
917 lfe - lgm->lisp_fwd_entry_pool);
919 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE == lfe->type)
921 s = format (s, "\n Negative - action:%U",
922 format_negative_mapping_action, lfe->action);
926 lisp_fwd_path_t *path;
928 s = format (s, "\n via:");
929 vec_foreach (path, lfe->paths)
931 s = format (s, "\n %U", format_lisp_fwd_path, path);
935 if (flags & LISP_GPE_FWD_ENTRY_FORMAT_DETAIL)
937 switch (fid_addr_type (&lfe->key->rmt))
940 s = format (s, " fib-path-list:%d\n", lfe->l2.path_list_index);
941 s = format (s, " dpo:%U\n", format_dpo_id, &lfe->l2.dpo, 0);
943 case FID_ADDR_IP_PREF:
951 static clib_error_t *
952 lisp_gpe_fwd_entry_show (vlib_main_t * vm,
953 unformat_input_t * input, vlib_cli_command_t * cmd)
955 lisp_gpe_main_t *lgm = &lisp_gpe_main;
956 lisp_gpe_fwd_entry_t *lfe;
960 if (unformat (input, "vni %d", &vni))
962 else if (unformat (input, "%d", &index))
964 if (!pool_is_free_index (lgm->lisp_fwd_entry_pool, index))
966 lfe = pool_elt_at_index (lgm->lisp_fwd_entry_pool, index);
968 vlib_cli_output (vm, "[%d@] %U",
970 format_lisp_gpe_fwd_entry, lfe,
971 LISP_GPE_FWD_ENTRY_FORMAT_DETAIL);
975 vlib_cli_output (vm, "entry %d invalid", index);
982 pool_foreach (lfe, lgm->lisp_fwd_entry_pool,
985 (lfe->key->vni == vni))
986 vlib_cli_output (vm, "%U", format_lisp_gpe_fwd_entry, lfe,
987 LISP_GPE_FWD_ENTRY_FORMAT_NONE);
995 VLIB_CLI_COMMAND (lisp_gpe_fwd_entry_show_command, static) = {
996 .path = "show lisp gpe entry",
997 .short_help = "show lisp gpe entry vni <vni> vrf <vrf> [leid <leid>] reid <reid>",
998 .function = lisp_gpe_fwd_entry_show,
1003 lisp_gpe_fwd_entry_init (vlib_main_t * vm)
1005 lisp_gpe_main_t *lgm = &lisp_gpe_main;
1006 clib_error_t *error = NULL;
1008 if ((error = vlib_call_init_function (vm, lisp_cp_dpo_module_init)))
1013 fib_node_register_type (FIB_NODE_TYPE_LISP_GPE_FWD_ENTRY, &lisp_fwd_vft);
1018 VLIB_INIT_FUNCTION (lisp_gpe_fwd_entry_init);
1021 * fd.io coding-style-patch-verification: ON
1024 * eval: (c-set-style "gnu")