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_INVALID;
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);
73 * add src fib default route
75 fib_prefix_t prefix = {
76 .fp_proto = dst_fib_prefix.fp_proto,
78 fib_table_entry_special_dpo_add (src_fib_index, &prefix,
80 FIB_ENTRY_FLAG_EXCLUSIVE,
81 lisp_cp_dpo_get (fib_proto_to_dpo
82 (dst_fib_prefix.fp_proto)));
84 * create a data-path object to perform the source address lookup
87 lookup_dpo_add_or_lock_w_fib_index (src_fib_index,
88 (ip_prefix_version (dst_prefix) ==
91 LOOKUP_INPUT_SRC_ADDR,
92 LOOKUP_TABLE_FROM_CONFIG,
96 * add the entry to the destination FIB that uses the lookup DPO
98 dst_fei = fib_table_entry_special_dpo_add (dst_fib_index,
101 FIB_ENTRY_FLAG_EXCLUSIVE,
105 * the DPO is locked by the FIB entry, and we have no further
108 dpo_unlock (&src_lkup_dpo);
111 * save the SRC FIB index on the entry so we can retrieve it for
114 fib_entry_set_source_data (dst_fei, FIB_SOURCE_LISP, &src_fib_index);
119 * destination FIB entry already present
121 src_fib_index = *(u32 *) fib_entry_get_source_data (dst_fei,
125 return (src_fib_index);
129 * @brief Del route to IP4 or IP6 SD FIB.
131 * Remove routes from both destination and source FIBs.
133 * @param[in] src_fib_index The index/ID of the SRC FIB
134 * @param[in] src_prefix Source IP prefix.
135 * @param[in] dst_fib_index The index/ID of the DST FIB
136 * @param[in] dst_prefix Destination IP prefix.
139 ip_src_dst_fib_del_route (u32 src_fib_index,
140 const ip_prefix_t * src_prefix,
141 u32 dst_fib_index, const ip_prefix_t * dst_prefix)
143 fib_prefix_t dst_fib_prefix, src_fib_prefix;
147 ASSERT (NULL != dst_prefix);
148 ASSERT (NULL != src_prefix);
150 ip_prefix_to_fib_prefix (dst_prefix, &dst_fib_prefix);
151 ip_prefix_to_fib_prefix (src_prefix, &src_fib_prefix);
153 fib_table_entry_delete (src_fib_index, &src_fib_prefix, FIB_SOURCE_LISP);
155 /* check if only default left or empty */
156 fib_prefix_t default_pref = {
157 .fp_proto = dst_fib_prefix.fp_proto
160 if (fib_table_lookup_exact_match (src_fib_index,
161 &default_pref) != FIB_NODE_INDEX_INVALID)
164 n_entries = fib_table_get_num_entries (src_fib_index,
165 src_fib_prefix.fp_proto,
167 if (n_entries == 0 || (have_default && n_entries == 1))
170 * remove src FIB default route
173 fib_table_entry_special_remove (src_fib_index, &default_pref,
177 * there's nothing left now, unlock the source FIB and the
180 fib_table_entry_special_remove (dst_fib_index,
181 &dst_fib_prefix, FIB_SOURCE_LISP);
182 fib_table_unlock (src_fib_index, src_fib_prefix.fp_proto);
187 * @brief Add route to IP4 or IP6 SRC FIB.
189 * Adds a route to in the LISP SRC FIB with the result of the route
190 * being the DPO passed.
192 * @param[in] src_fib_index The index/ID of the SRC FIB
193 * @param[in] src_prefix Source IP prefix.
194 * @param[in] src_dpo The DPO the route will link to.
197 ip_src_fib_add_route_w_dpo (u32 src_fib_index,
198 const ip_prefix_t * src_prefix,
199 const dpo_id_t * src_dpo)
201 fib_prefix_t src_fib_prefix;
203 ip_prefix_to_fib_prefix (src_prefix, &src_fib_prefix);
206 * add the entry into the source fib.
208 fib_node_index_t src_fei;
210 src_fei = fib_table_lookup_exact_match (src_fib_index, &src_fib_prefix);
212 if (FIB_NODE_INDEX_INVALID == src_fei ||
213 !fib_entry_is_sourced (src_fei, FIB_SOURCE_LISP))
215 fib_table_entry_special_dpo_add (src_fib_index,
218 FIB_ENTRY_FLAG_EXCLUSIVE, src_dpo);
222 static fib_route_path_t *
223 lisp_gpe_mk_fib_paths (const lisp_fwd_path_t * paths)
225 const lisp_gpe_adjacency_t *ladj;
226 fib_route_path_t *rpaths = NULL;
230 vec_validate (rpaths, vec_len (paths) - 1);
232 best_priority = paths[0].priority;
234 vec_foreach_index (ii, paths)
236 if (paths[0].priority != best_priority)
239 ladj = lisp_gpe_adjacency_get (paths[ii].lisp_adj);
241 ip_address_to_46 (&ladj->remote_rloc,
242 &rpaths[ii].frp_addr, &rpaths[ii].frp_proto);
244 rpaths[ii].frp_sw_if_index = ladj->sw_if_index;
245 rpaths[ii].frp_weight = (paths[ii].weight ? paths[ii].weight : 1);
246 rpaths[ii].frp_label = MPLS_LABEL_INVALID;
249 ASSERT (0 != vec_len (rpaths));
255 * @brief Add route to IP4 or IP6 SRC FIB.
257 * Adds a route to in the LISP SRC FIB for the tunnel.
259 * @param[in] src_fib_index The index/ID of the SRC FIB
260 * @param[in] src_prefix Source IP prefix.
261 * @param[in] paths The paths from which to construct the
265 ip_src_fib_add_route (u32 src_fib_index,
266 const ip_prefix_t * src_prefix,
267 const lisp_fwd_path_t * paths)
269 fib_prefix_t src_fib_prefix;
270 fib_route_path_t *rpaths;
272 ip_prefix_to_fib_prefix (src_prefix, &src_fib_prefix);
274 rpaths = lisp_gpe_mk_fib_paths (paths);
276 fib_table_entry_update (src_fib_index,
278 FIB_SOURCE_LISP, FIB_ENTRY_FLAG_NONE, rpaths);
284 create_fib_entries (lisp_gpe_fwd_entry_t * lfe)
288 dproto = (ip_prefix_version (&lfe->key->rmt.ippref) == IP4 ?
289 DPO_PROTO_IP4 : DPO_PROTO_IP6);
291 lfe->src_fib_index = ip_dst_fib_add_route (lfe->eid_fib_index,
292 &lfe->key->rmt.ippref);
294 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE == lfe->type)
296 dpo_id_t dpo = DPO_INVALID;
301 /* TODO update timers? */
302 case LISP_FORWARD_NATIVE:
303 /* TODO check if route/next-hop for eid exists in fib and add
304 * more specific for the eid with the next-hop found */
305 case LISP_SEND_MAP_REQUEST:
306 /* insert tunnel that always sends map-request */
307 dpo_copy (&dpo, lisp_cp_dpo_get (dproto));
310 /* for drop fwd entries, just add route, no need to add encap tunnel */
311 dpo_copy (&dpo, drop_dpo_get (dproto));
314 ip_src_fib_add_route_w_dpo (lfe->src_fib_index,
315 &lfe->key->lcl.ippref, &dpo);
320 ip_src_fib_add_route (lfe->src_fib_index,
321 &lfe->key->lcl.ippref, lfe->paths);
326 delete_fib_entries (lisp_gpe_fwd_entry_t * lfe)
328 ip_src_dst_fib_del_route (lfe->src_fib_index,
329 &lfe->key->lcl.ippref,
330 lfe->eid_fib_index, &lfe->key->rmt.ippref);
334 gid_to_dp_address (gid_address_t * g, dp_address_t * d)
336 switch (gid_address_type (g))
338 case GID_ADDR_IP_PREFIX:
339 case GID_ADDR_SRC_DST:
340 ip_prefix_copy (&d->ippref, &gid_address_ippref (g));
341 d->type = FID_ADDR_IP_PREF;
345 mac_copy (&d->mac, &gid_address_mac (g));
346 d->type = FID_ADDR_MAC;
351 static lisp_gpe_fwd_entry_t *
352 find_fwd_entry (lisp_gpe_main_t * lgm,
353 vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
354 lisp_gpe_fwd_entry_key_t * key)
358 memset (key, 0, sizeof (*key));
360 if (GID_ADDR_IP_PREFIX == gid_address_type (&a->rmt_eid))
363 * the ip version of the source is not set to ip6 when the
364 * source is all zeros. force it.
366 ip_prefix_version (&gid_address_ippref (&a->lcl_eid)) =
367 ip_prefix_version (&gid_address_ippref (&a->rmt_eid));
370 gid_to_dp_address (&a->rmt_eid, &key->rmt);
371 gid_to_dp_address (&a->lcl_eid, &key->lcl);
374 p = hash_get_mem (lgm->lisp_gpe_fwd_entries, key);
378 return (pool_elt_at_index (lgm->lisp_fwd_entry_pool, p[0]));
384 lisp_gpe_fwd_entry_path_sort (void *a1, void *a2)
386 lisp_fwd_path_t *p1 = a1, *p2 = a2;
388 return (p1->priority - p2->priority);
392 lisp_gpe_fwd_entry_mk_paths (lisp_gpe_fwd_entry_t * lfe,
393 vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
395 lisp_fwd_path_t *path;
398 vec_validate (lfe->paths, vec_len (a->locator_pairs) - 1);
400 vec_foreach_index (index, a->locator_pairs)
402 path = &lfe->paths[index];
404 path->priority = a->locator_pairs[index].priority;
405 path->weight = a->locator_pairs[index].weight;
408 lisp_gpe_adjacency_find_or_create_and_lock (&a->locator_pairs
410 a->dp_table, lfe->key->vni);
412 vec_sort_with_function (lfe->paths, lisp_gpe_fwd_entry_path_sort);
416 * @brief Add/Delete LISP IP forwarding entry.
418 * creation of forwarding entries for IP LISP overlay:
420 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
421 * @param[in] a Parameters for building the forwarding entry.
423 * @return 0 on success.
426 add_ip_fwd_entry (lisp_gpe_main_t * lgm,
427 vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
429 lisp_gpe_fwd_entry_key_t key;
430 lisp_gpe_fwd_entry_t *lfe;
431 fib_protocol_t fproto;
433 lfe = find_fwd_entry (lgm, a, &key);
436 /* don't support updates */
437 return VNET_API_ERROR_INVALID_VALUE;
439 pool_get (lgm->lisp_fwd_entry_pool, lfe);
440 memset (lfe, 0, sizeof (*lfe));
441 lfe->key = clib_mem_alloc (sizeof (key));
442 memcpy (lfe->key, &key, sizeof (key));
444 hash_set_mem (lgm->lisp_gpe_fwd_entries, lfe->key,
445 lfe - lgm->lisp_fwd_entry_pool);
447 fproto = (IP4 == ip_prefix_version (&fid_addr_ippref (&lfe->key->rmt)) ?
448 FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
450 lfe->type = (a->is_negative ?
451 LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE :
452 LISP_GPE_FWD_ENTRY_TYPE_NORMAL);
453 lfe->tenant = lisp_gpe_tenant_find_or_create (lfe->key->vni);
454 lfe->eid_table_id = a->table_id;
455 lfe->eid_fib_index = fib_table_find_or_create_and_lock (fproto,
458 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE != lfe->type)
460 lisp_gpe_fwd_entry_mk_paths (lfe, a);
463 create_fib_entries (lfe);
469 del_ip_fwd_entry_i (lisp_gpe_main_t * lgm, lisp_gpe_fwd_entry_t * lfe)
471 lisp_fwd_path_t *path;
472 fib_protocol_t fproto;
474 vec_foreach (path, lfe->paths)
476 lisp_gpe_adjacency_unlock (path->lisp_adj);
479 delete_fib_entries (lfe);
481 fproto = (IP4 == ip_prefix_version (&fid_addr_ippref (&lfe->key->rmt)) ?
482 FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
483 fib_table_unlock (lfe->eid_fib_index, fproto);
485 hash_unset_mem (lgm->lisp_gpe_fwd_entries, lfe->key);
486 clib_mem_free (lfe->key);
487 pool_put (lgm->lisp_fwd_entry_pool, lfe);
491 * @brief Add/Delete LISP IP forwarding entry.
493 * removal of forwarding entries for IP LISP overlay:
495 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
496 * @param[in] a Parameters for building the forwarding entry.
498 * @return 0 on success.
501 del_ip_fwd_entry (lisp_gpe_main_t * lgm,
502 vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
504 lisp_gpe_fwd_entry_key_t key;
505 lisp_gpe_fwd_entry_t *lfe;
507 lfe = find_fwd_entry (lgm, a, &key);
511 return VNET_API_ERROR_INVALID_VALUE;
513 del_ip_fwd_entry_i (lgm, lfe);
519 make_mac_fib_key (BVT (clib_bihash_kv) * kv, u16 bd_index, u8 src_mac[6],
522 kv->key[0] = (((u64) bd_index) << 48) | mac_to_u64 (dst_mac);
523 kv->key[1] = mac_to_u64 (src_mac);
528 * @brief Lookup L2 SD FIB entry
530 * Does a vni + dest + source lookup in the L2 LISP FIB. If the lookup fails
531 * it tries a second time with source set to 0 (i.e., a simple dest lookup).
533 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
534 * @param[in] bd_index Bridge domain index.
535 * @param[in] src_mac Source mac address.
536 * @param[in] dst_mac Destination mac address.
538 * @return index of mapping matching the lookup key.
541 lisp_l2_fib_lookup (lisp_gpe_main_t * lgm, u16 bd_index, u8 src_mac[6],
545 BVT (clib_bihash_kv) kv, value;
547 make_mac_fib_key (&kv, bd_index, src_mac, dst_mac);
548 rv = BV (clib_bihash_search_inline_2) (&lgm->l2_fib, &kv, &value);
550 /* no match, try with src 0, catch all for dst */
554 rv = BV (clib_bihash_search_inline_2) (&lgm->l2_fib, &kv, &value);
561 return lisp_gpe_main.l2_lb_cp_lkup.dpoi_index;
565 * @brief Add/del L2 SD FIB entry
567 * Inserts value in L2 FIB keyed by vni + dest + source. If entry is
568 * overwritten the associated value is returned.
570 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
571 * @param[in] bd_index Bridge domain index.
572 * @param[in] src_mac Source mac address.
573 * @param[in] dst_mac Destination mac address.
574 * @param[in] val Value to add.
575 * @param[in] is_add Add/del flag.
577 * @return ~0 or value of overwritten entry.
580 lisp_l2_fib_add_del_entry (u16 bd_index, u8 src_mac[6],
581 u8 dst_mac[6], const dpo_id_t * dpo, u8 is_add)
583 lisp_gpe_main_t *lgm = &lisp_gpe_main;
584 BVT (clib_bihash_kv) kv, value;
587 make_mac_fib_key (&kv, bd_index, src_mac, dst_mac);
589 if (BV (clib_bihash_search) (&lgm->l2_fib, &kv, &value) == 0)
590 old_val = value.value;
593 BV (clib_bihash_add_del) (&lgm->l2_fib, &kv, 0 /* is_add */ );
596 kv.value = dpo->dpoi_index;
597 BV (clib_bihash_add_del) (&lgm->l2_fib, &kv, 1 /* is_add */ );
602 #define L2_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
603 #define L2_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20)
606 l2_fib_init (lisp_gpe_main_t * lgm)
610 BV (clib_bihash_init) (&lgm->l2_fib, "l2 fib",
611 1 << max_log2 (L2_FIB_DEFAULT_HASH_NUM_BUCKETS),
612 L2_FIB_DEFAULT_HASH_MEMORY_SIZE);
615 * the result from a 'miss' in a L2 Table
617 lbi = load_balance_create (1, DPO_PROTO_ETHERNET, 0);
618 load_balance_set_bucket (lbi, 0, lisp_cp_dpo_get (DPO_PROTO_ETHERNET));
620 dpo_set (&lgm->l2_lb_cp_lkup, DPO_LOAD_BALANCE, DPO_PROTO_ETHERNET, lbi);
624 del_l2_fwd_entry_i (lisp_gpe_main_t * lgm, lisp_gpe_fwd_entry_t * lfe)
626 lisp_fwd_path_t *path;
628 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE != lfe->type)
630 vec_foreach (path, lfe->paths)
632 lisp_gpe_adjacency_unlock (path->lisp_adj);
634 fib_path_list_child_remove (lfe->l2.path_list_index,
635 lfe->l2.child_index);
638 lisp_l2_fib_add_del_entry (lfe->l2.eid_bd_index,
639 fid_addr_mac (&lfe->key->lcl),
640 fid_addr_mac (&lfe->key->rmt), NULL, 0);
642 hash_unset_mem (lgm->lisp_gpe_fwd_entries, lfe->key);
643 clib_mem_free (lfe->key);
644 pool_put (lgm->lisp_fwd_entry_pool, lfe);
648 * @brief Delete LISP L2 forwarding entry.
650 * Coordinates the removal of forwarding entries for L2 LISP overlay:
652 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
653 * @param[in] a Parameters for building the forwarding entry.
655 * @return 0 on success.
658 del_l2_fwd_entry (lisp_gpe_main_t * lgm,
659 vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
661 lisp_gpe_fwd_entry_key_t key;
662 lisp_gpe_fwd_entry_t *lfe;
664 lfe = find_fwd_entry (lgm, a, &key);
667 return VNET_API_ERROR_INVALID_VALUE;
669 del_l2_fwd_entry_i (lgm, lfe);
675 * @brief Construct and insert the forwarding information used by a L2 entry
678 lisp_gpe_l2_update_fwding (lisp_gpe_fwd_entry_t * lfe)
680 lisp_gpe_main_t *lgm = &lisp_gpe_main;
681 dpo_id_t dpo = DPO_INVALID;
683 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE != lfe->type)
685 fib_path_list_contribute_forwarding (lfe->l2.path_list_index,
686 FIB_FORW_CHAIN_TYPE_ETHERNET,
688 dpo_copy (&dpo, &lfe->l2.dpo);
692 dpo_copy (&dpo, &lgm->l2_lb_cp_lkup);
695 /* add entry to l2 lisp fib */
696 lisp_l2_fib_add_del_entry (lfe->l2.eid_bd_index,
697 fid_addr_mac (&lfe->key->lcl),
698 fid_addr_mac (&lfe->key->rmt), &dpo, 1);
704 * @brief Add LISP L2 forwarding entry.
706 * Coordinates the creation of forwarding entries for L2 LISP overlay:
707 * creates lisp-gpe tunnel and injects new entry in Source/Dest L2 FIB.
709 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
710 * @param[in] a Parameters for building the forwarding entry.
712 * @return 0 on success.
715 add_l2_fwd_entry (lisp_gpe_main_t * lgm,
716 vnet_lisp_gpe_add_del_fwd_entry_args_t * a)
718 lisp_gpe_fwd_entry_key_t key;
719 bd_main_t *bdm = &bd_main;
720 lisp_gpe_fwd_entry_t *lfe;
723 bd_indexp = hash_get (bdm->bd_index_by_bd_id, a->bd_id);
726 clib_warning ("bridge domain %d doesn't exist", a->bd_id);
730 lfe = find_fwd_entry (lgm, a, &key);
733 /* don't support updates */
734 return VNET_API_ERROR_INVALID_VALUE;
736 pool_get (lgm->lisp_fwd_entry_pool, lfe);
737 memset (lfe, 0, sizeof (*lfe));
738 lfe->key = clib_mem_alloc (sizeof (key));
739 memcpy (lfe->key, &key, sizeof (key));
741 hash_set_mem (lgm->lisp_gpe_fwd_entries, lfe->key,
742 lfe - lgm->lisp_fwd_entry_pool);
744 lfe->type = (a->is_negative ?
745 LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE :
746 LISP_GPE_FWD_ENTRY_TYPE_NORMAL);
747 lfe->l2.eid_bd_id = a->bd_id;
748 lfe->l2.eid_bd_index = bd_indexp[0];
749 lfe->tenant = lisp_gpe_tenant_find_or_create (lfe->key->vni);
751 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE != lfe->type)
753 fib_route_path_t *rpaths;
756 * Make the sorted array of LISP paths with their resp. adjacency
758 lisp_gpe_fwd_entry_mk_paths (lfe, a);
761 * From the LISP paths, construct a FIB path list that will
762 * contribute a load-balance.
764 rpaths = lisp_gpe_mk_fib_paths (lfe->paths);
766 lfe->l2.path_list_index =
767 fib_path_list_create (FIB_PATH_LIST_FLAG_NONE, rpaths);
770 * become a child of the path-list so we receive updates when
771 * its forwarding state changes. this includes an implicit lock.
773 lfe->l2.child_index =
774 fib_path_list_child_add (lfe->l2.path_list_index,
775 FIB_NODE_TYPE_LISP_GPE_FWD_ENTRY,
776 lfe - lgm->lisp_fwd_entry_pool);
780 lfe->action = a->action;
783 lisp_gpe_l2_update_fwding (lfe);
789 * @brief conver from the embedded fib_node_t struct to the LSIP entry
791 static lisp_gpe_fwd_entry_t *
792 lisp_gpe_fwd_entry_from_fib_node (fib_node_t * node)
794 return ((lisp_gpe_fwd_entry_t *) (((char *) node) -
795 STRUCT_OFFSET_OF (lisp_gpe_fwd_entry_t,
800 * @brief Function invoked during a backwalk of the FIB graph
802 static fib_node_back_walk_rc_t
803 lisp_gpe_fib_node_back_walk (fib_node_t * node,
804 fib_node_back_walk_ctx_t * ctx)
806 lisp_gpe_l2_update_fwding (lisp_gpe_fwd_entry_from_fib_node (node));
808 return (FIB_NODE_BACK_WALK_CONTINUE);
812 * @brief Get a fib_node_t struct from the index of a LISP fwd entry
815 lisp_gpe_fwd_entry_get_fib_node (fib_node_index_t index)
817 lisp_gpe_main_t *lgm = &lisp_gpe_main;
818 lisp_gpe_fwd_entry_t *lfe;
820 lfe = pool_elt_at_index (lgm->lisp_fwd_entry_pool, index);
822 return (&(lfe->node));
826 * @brief An indication from the graph that the last lock has gone
829 lisp_gpe_fwd_entry_fib_node_last_lock_gone (fib_node_t * node)
831 /* We don't manage the locks of the LISP objects via the graph, since
832 * this object has no children. so this is a no-op. */
836 * @brief Virtual function table to register with FIB for the LISP type
838 const static fib_node_vft_t lisp_fwd_vft = {
839 .fnv_get = lisp_gpe_fwd_entry_get_fib_node,
840 .fnv_last_lock = lisp_gpe_fwd_entry_fib_node_last_lock_gone,
841 .fnv_back_walk = lisp_gpe_fib_node_back_walk,
845 * @brief Forwarding entry create/remove dispatcher.
847 * Calls l2 or l3 forwarding entry add/del function based on input data.
849 * @param[in] a Forwarding entry parameters.
850 * @param[out] hw_if_indexp NOT USED
852 * @return 0 on success.
855 vnet_lisp_gpe_add_del_fwd_entry (vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
858 lisp_gpe_main_t *lgm = &lisp_gpe_main;
861 if (vnet_lisp_gpe_enable_disable_status () == 0)
863 clib_warning ("LISP is disabled!");
864 return VNET_API_ERROR_LISP_DISABLED;
867 type = gid_address_type (&a->rmt_eid);
870 case GID_ADDR_IP_PREFIX:
872 return add_ip_fwd_entry (lgm, a);
874 return del_ip_fwd_entry (lgm, a);
878 return add_l2_fwd_entry (lgm, a);
880 return del_l2_fwd_entry (lgm, a);
882 clib_warning ("Forwarding entries for type %d not supported!", type);
888 * @brief Flush all the forwrding entries
891 vnet_lisp_gpe_fwd_entry_flush (void)
893 lisp_gpe_main_t *lgm = &lisp_gpe_main;
894 lisp_gpe_fwd_entry_t *lfe;
897 pool_foreach (lfe, lgm->lisp_fwd_entry_pool,
899 switch (fid_addr_type(&lfe->key->rmt))
902 del_l2_fwd_entry_i (lgm, lfe);
904 case FID_ADDR_IP_PREF:
905 del_ip_fwd_entry_i (lgm, lfe);
913 format_lisp_fwd_path (u8 * s, va_list ap)
915 lisp_fwd_path_t *lfp = va_arg (ap, lisp_fwd_path_t *);
917 s = format (s, "priority:%d weight:%d ", lfp->priority, lfp->weight);
918 s = format (s, "adj:[%U]\n",
919 format_lisp_gpe_adjacency,
920 lisp_gpe_adjacency_get (lfp->lisp_adj),
921 LISP_GPE_ADJ_FORMAT_FLAG_NONE);
926 typedef enum lisp_gpe_fwd_entry_format_flag_t_
928 LISP_GPE_FWD_ENTRY_FORMAT_NONE = (0 << 0),
929 LISP_GPE_FWD_ENTRY_FORMAT_DETAIL = (1 << 1),
930 } lisp_gpe_fwd_entry_format_flag_t;
934 format_lisp_gpe_fwd_entry (u8 * s, va_list ap)
936 lisp_gpe_main_t *lgm = &lisp_gpe_main;
937 lisp_gpe_fwd_entry_t *lfe = va_arg (ap, lisp_gpe_fwd_entry_t *);
938 lisp_gpe_fwd_entry_format_flag_t flags =
939 va_arg (ap, lisp_gpe_fwd_entry_format_flag_t);
941 s = format (s, "VNI:%d VRF:%d EID: %U -> %U [index:%d]",
942 lfe->key->vni, lfe->eid_table_id,
943 format_fid_address, &lfe->key->lcl,
944 format_fid_address, &lfe->key->rmt,
945 lfe - lgm->lisp_fwd_entry_pool);
947 if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE == lfe->type)
949 s = format (s, "\n Negative - action:%U",
950 format_negative_mapping_action, lfe->action);
954 lisp_fwd_path_t *path;
956 s = format (s, "\n via:");
957 vec_foreach (path, lfe->paths)
959 s = format (s, "\n %U", format_lisp_fwd_path, path);
963 if (flags & LISP_GPE_FWD_ENTRY_FORMAT_DETAIL)
965 switch (fid_addr_type (&lfe->key->rmt))
968 s = format (s, " fib-path-list:%d\n", lfe->l2.path_list_index);
969 s = format (s, " dpo:%U\n", format_dpo_id, &lfe->l2.dpo, 0);
971 case FID_ADDR_IP_PREF:
979 static clib_error_t *
980 lisp_gpe_fwd_entry_show (vlib_main_t * vm,
981 unformat_input_t * input, vlib_cli_command_t * cmd)
983 lisp_gpe_main_t *lgm = &lisp_gpe_main;
984 lisp_gpe_fwd_entry_t *lfe;
988 if (unformat (input, "vni %d", &vni))
990 else if (unformat (input, "%d", &index))
992 if (!pool_is_free_index (lgm->lisp_fwd_entry_pool, index))
994 lfe = pool_elt_at_index (lgm->lisp_fwd_entry_pool, index);
996 vlib_cli_output (vm, "[%d@] %U",
998 format_lisp_gpe_fwd_entry, lfe,
999 LISP_GPE_FWD_ENTRY_FORMAT_DETAIL);
1003 vlib_cli_output (vm, "entry %d invalid", index);
1010 pool_foreach (lfe, lgm->lisp_fwd_entry_pool,
1013 (lfe->key->vni == vni))
1014 vlib_cli_output (vm, "%U", format_lisp_gpe_fwd_entry, lfe,
1015 LISP_GPE_FWD_ENTRY_FORMAT_NONE);
1023 VLIB_CLI_COMMAND (lisp_gpe_fwd_entry_show_command, static) = {
1024 .path = "show lisp gpe entry",
1025 .short_help = "show lisp gpe entry vni <vni> vrf <vrf> [leid <leid>] reid <reid>",
1026 .function = lisp_gpe_fwd_entry_show,
1031 lisp_gpe_fwd_entry_init (vlib_main_t * vm)
1033 lisp_gpe_main_t *lgm = &lisp_gpe_main;
1034 clib_error_t *error = NULL;
1036 if ((error = vlib_call_init_function (vm, lisp_cp_dpo_module_init)))
1041 fib_node_register_type (FIB_NODE_TYPE_LISP_GPE_FWD_ENTRY, &lisp_fwd_vft);
1046 VLIB_INIT_FUNCTION (lisp_gpe_fwd_entry_init);
1049 * fd.io coding-style-patch-verification: ON
1052 * eval: (c-set-style "gnu")