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/adj/adj.h>
17 #include <vnet/dpo/load_balance.h>
18 #include <vnet/dpo/mpls_label_dpo.h>
19 #include <vnet/dpo/drop_dpo.h>
20 #include <vnet/dpo/replicate_dpo.h>
22 #include <vnet/fib/fib_entry_src.h>
23 #include <vnet/fib/fib_table.h>
24 #include <vnet/fib/fib_path_ext.h>
25 #include <vnet/fib/fib_urpf_list.h>
30 static fib_entry_src_vft_t fib_entry_src_vft[FIB_SOURCE_MAX];
33 * Get the VFT for a given source. This is a combination of the source
34 * enum and the interposer flags
36 const fib_entry_src_vft_t*
37 fib_entry_src_get_vft (const fib_entry_src_t *esrc)
39 if (esrc->fes_entry_flags & FIB_ENTRY_FLAG_INTERPOSE)
41 return (&fib_entry_src_vft[FIB_SOURCE_INTERPOSE]);
44 return (&fib_entry_src_vft[esrc->fes_src]);
48 fib_entry_src_copy_default (const fib_entry_src_t *orig_src,
49 const fib_entry_t *fib_entry,
50 fib_entry_src_t *copy_src)
52 clib_memcpy(©_src->u, &orig_src->u, sizeof(copy_src->u));
56 fib_entry_src_register (fib_source_t source,
57 const fib_entry_src_vft_t *vft)
59 fib_entry_src_vft[source] = *vft;
61 if (NULL == fib_entry_src_vft[source].fesv_copy)
63 fib_entry_src_vft[source].fesv_copy = fib_entry_src_copy_default;
68 fib_entry_src_cmp_for_sort (void * v1,
71 fib_entry_src_t *esrc1 = v1, *esrc2 = v2;
73 return (esrc1->fes_src - esrc2->fes_src);
77 fib_entry_src_action_init (fib_entry_t *fib_entry,
79 fib_entry_flag_t flags)
81 fib_entry_src_t esrc = {
82 .fes_pl = FIB_NODE_INDEX_INVALID,
83 .fes_flags = FIB_ENTRY_SRC_FLAG_NONE,
85 .fes_entry_flags = flags,
88 FIB_ENTRY_SRC_VFT_INVOKE(&esrc, fesv_init, (&esrc));
90 vec_add1(fib_entry->fe_srcs, esrc);
91 vec_sort_with_function(fib_entry->fe_srcs,
92 fib_entry_src_cmp_for_sort);
95 static fib_entry_src_t *
96 fib_entry_src_find_i (const fib_entry_t *fib_entry,
101 fib_entry_src_t *esrc;
105 vec_foreach(esrc, fib_entry->fe_srcs)
107 if (esrc->fes_src == source)
124 static fib_entry_src_t *
125 fib_entry_src_find (const fib_entry_t *fib_entry,
129 return (fib_entry_src_find_i(fib_entry, source, NULL));
133 fib_entry_is_sourced (fib_node_index_t fib_entry_index,
136 fib_entry_t *fib_entry;
138 fib_entry = fib_entry_get(fib_entry_index);
140 return (NULL != fib_entry_src_find(fib_entry, source));
143 static fib_entry_src_t *
144 fib_entry_src_find_or_create (fib_entry_t *fib_entry,
146 fib_entry_flag_t flags)
148 fib_entry_src_t *esrc;
150 esrc = fib_entry_src_find(fib_entry, source);
154 fib_entry_src_action_init(fib_entry, source, flags);
157 return (fib_entry_src_find(fib_entry, source));
161 fib_entry_src_action_deinit (fib_entry_t *fib_entry,
165 fib_entry_src_t *esrc;
168 esrc = fib_entry_src_find_i(fib_entry, source, &index);
170 ASSERT(NULL != esrc);
172 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_deinit, (esrc));
174 fib_path_ext_list_flush(&esrc->fes_path_exts);
175 vec_del1(fib_entry->fe_srcs, index);
178 fib_entry_src_cover_res_t
179 fib_entry_src_action_cover_change (fib_entry_t *fib_entry,
180 fib_entry_src_t *esrc)
182 FIB_ENTRY_SRC_VFT_INVOKE_AND_RETURN(esrc, fesv_cover_change,
185 fib_entry_src_cover_res_t res = {
187 .bw_reason = FIB_NODE_BW_REASON_FLAG_NONE,
192 fib_entry_src_cover_res_t
193 fib_entry_src_action_cover_update (fib_entry_t *fib_entry,
194 fib_entry_src_t *esrc)
196 FIB_ENTRY_SRC_VFT_INVOKE_AND_RETURN(esrc, fesv_cover_update,
199 fib_entry_src_cover_res_t res = {
201 .bw_reason = FIB_NODE_BW_REASON_FLAG_NONE,
206 typedef struct fib_entry_src_collect_forwarding_ctx_t_
208 load_balance_path_t *next_hops;
209 const fib_entry_t *fib_entry;
210 const fib_entry_src_t *esrc;
211 fib_forward_chain_type_t fct;
212 int n_recursive_constrained;
214 } fib_entry_src_collect_forwarding_ctx_t;
217 * @brief Determine whether this FIB entry should use a load-balance MAP
218 * to support PIC edge fast convergence
221 fib_entry_calc_lb_flags (fib_entry_src_collect_forwarding_ctx_t *ctx)
224 * We'll use a LB map if the path-list has multiple recursive paths.
225 * recursive paths implies BGP, and hence scale.
227 if (ctx->n_recursive_constrained > 1 &&
228 fib_path_list_is_popular(ctx->esrc->fes_pl))
230 return (LOAD_BALANCE_FLAG_USES_MAP);
232 return (LOAD_BALANCE_FLAG_NONE);
236 fib_entry_src_valid_out_label (mpls_label_t label)
238 return ((MPLS_LABEL_IS_REAL(label) ||
239 MPLS_LABEL_POP == label ||
240 MPLS_IETF_IPV4_EXPLICIT_NULL_LABEL == label ||
241 MPLS_IETF_IPV6_EXPLICIT_NULL_LABEL == label ||
242 MPLS_IETF_IMPLICIT_NULL_LABEL == label));
246 * @brief Turn the chain type requested by the client into the one they
249 fib_forward_chain_type_t
250 fib_entry_chain_type_fixup (const fib_entry_t *entry,
251 fib_forward_chain_type_t fct)
254 * The EOS chain is a tricky since one cannot know the adjacency
255 * to link to without knowing what the packets payload protocol
256 * will be once the label is popped.
258 fib_forward_chain_type_t dfct;
260 if (FIB_FORW_CHAIN_TYPE_MPLS_EOS != fct)
265 dfct = fib_entry_get_default_chain_type(entry);
267 if (FIB_FORW_CHAIN_TYPE_MPLS_EOS == dfct)
270 * If the entry being asked is a eos-MPLS label entry,
271 * then use the payload-protocol field, that we stashed there
272 * for just this purpose
274 return (fib_forw_chain_type_from_dpo_proto(
275 entry->fe_prefix.fp_payload_proto));
278 * else give them what this entry would be by default. i.e. if it's a v6
279 * entry, then the label its local labelled should be carrying v6 traffic.
280 * If it's a non-EOS label entry, then there are more labels and we want
287 fib_prefix_get_payload_proto (const fib_prefix_t *pfx)
289 switch (pfx->fp_proto)
291 case FIB_PROTOCOL_IP4:
292 return (DPO_PROTO_IP4);
293 case FIB_PROTOCOL_IP6:
294 return (DPO_PROTO_IP6);
295 case FIB_PROTOCOL_MPLS:
296 return (pfx->fp_payload_proto);
300 return (DPO_PROTO_IP4);
304 fib_entry_src_get_path_forwarding (fib_node_index_t path_index,
305 fib_entry_src_collect_forwarding_ctx_t *ctx)
307 load_balance_path_t *nh;
310 * no extension => no out-going label for this path. that's OK
311 * in the case of an IP or EOS chain, but not for non-EOS
315 case FIB_FORW_CHAIN_TYPE_UNICAST_IP4:
316 case FIB_FORW_CHAIN_TYPE_UNICAST_IP6:
317 case FIB_FORW_CHAIN_TYPE_MCAST_IP4:
318 case FIB_FORW_CHAIN_TYPE_MCAST_IP6:
319 case FIB_FORW_CHAIN_TYPE_BIER:
321 * EOS traffic with no label to stack, we need the IP Adj
323 vec_add2(ctx->next_hops, nh, 1);
325 nh->path_index = path_index;
326 nh->path_weight = fib_path_get_weight(path_index);
327 fib_path_contribute_forwarding(path_index, ctx->fct, &nh->path_dpo);
330 case FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS:
331 if (fib_path_is_exclusive(path_index) ||
332 fib_path_is_deag(path_index))
334 vec_add2(ctx->next_hops, nh, 1);
336 nh->path_index = path_index;
337 nh->path_weight = fib_path_get_weight(path_index);
338 fib_path_contribute_forwarding(path_index,
339 FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS,
343 case FIB_FORW_CHAIN_TYPE_MPLS_EOS:
346 * no label. we need a chain based on the payload. fixup.
348 vec_add2(ctx->next_hops, nh, 1);
350 nh->path_index = path_index;
351 nh->path_weight = fib_path_get_weight(path_index);
352 fib_path_contribute_forwarding(path_index,
353 fib_entry_chain_type_fixup(ctx->fib_entry,
356 fib_path_stack_mpls_disp(path_index,
357 fib_prefix_get_payload_proto(&ctx->fib_entry->fe_prefix),
358 FIB_MPLS_LSP_MODE_PIPE,
363 case FIB_FORW_CHAIN_TYPE_ETHERNET:
364 case FIB_FORW_CHAIN_TYPE_NSH:
370 static fib_path_list_walk_rc_t
371 fib_entry_src_collect_forwarding (fib_node_index_t pl_index,
372 fib_node_index_t path_index,
375 fib_entry_src_collect_forwarding_ctx_t *ctx;
376 fib_path_ext_t *path_ext;
380 n_nhs = vec_len(ctx->next_hops);
383 * if the path is not resolved, don't include it.
385 if (!fib_path_is_resolved(path_index))
387 return (FIB_PATH_LIST_WALK_CONTINUE);
390 if (fib_path_is_recursive_constrained(path_index))
392 ctx->n_recursive_constrained += 1;
394 if (0xffff == ctx->preference)
397 * not set a preference yet, so the first path we encounter
398 * sets the preference we are collecting.
400 ctx->preference = fib_path_get_preference(path_index);
402 else if (ctx->preference != fib_path_get_preference(path_index))
405 * this path does not belong to the same preference as the
406 * previous paths encountered. we are done now.
408 return (FIB_PATH_LIST_WALK_STOP);
412 * get the matching path-extension for the path being visited.
414 path_ext = fib_path_ext_list_find_by_path_index(&ctx->esrc->fes_path_exts,
417 if (NULL != path_ext)
419 switch (path_ext->fpe_type)
421 case FIB_PATH_EXT_MPLS:
422 if (fib_entry_src_valid_out_label(path_ext->fpe_label_stack[0].fml_value))
425 * found a matching extension. stack it to obtain the forwarding
426 * info for this path.
429 fib_path_ext_stack(path_ext,
431 fib_entry_chain_type_fixup(ctx->fib_entry,
437 fib_entry_src_get_path_forwarding(path_index, ctx);
440 case FIB_PATH_EXT_ADJ:
441 if (FIB_PATH_EXT_ADJ_FLAG_REFINES_COVER & path_ext->fpe_adj_flags)
443 fib_entry_src_get_path_forwarding(path_index, ctx);
447 * the path does not refine the cover, meaning that
448 * the adjacency doesdoes not match the sub-net on the link.
449 * So this path does not contribute forwarding.
456 fib_entry_src_get_path_forwarding(path_index, ctx);
460 * a this point 'ctx' has the DPO the path contributed, plus
461 * any labels from path extensions.
462 * check if there are any interpose sources that want to contribute
464 if (n_nhs < vec_len(ctx->next_hops))
467 * the path contributed a new choice.
469 const fib_entry_src_vft_t *vft;
471 vft = fib_entry_src_get_vft(ctx->esrc);
473 if (NULL != vft->fesv_contribute_interpose)
475 const dpo_id_t *interposer;
477 interposer = vft->fesv_contribute_interpose(ctx->esrc,
480 if (NULL != interposer)
482 dpo_id_t clone = DPO_INVALID;
484 dpo_mk_interpose(interposer,
485 &ctx->next_hops[n_nhs].path_dpo,
488 dpo_copy(&ctx->next_hops[n_nhs].path_dpo, &clone);
494 return (FIB_PATH_LIST_WALK_CONTINUE);
498 fib_entry_src_mk_lb (fib_entry_t *fib_entry,
499 const fib_entry_src_t *esrc,
500 fib_forward_chain_type_t fct,
503 dpo_proto_t lb_proto;
506 * If the entry has path extensions then we construct a load-balance
507 * by stacking the extensions on the forwarding chains of the paths.
508 * Otherwise we use the load-balance of the path-list
510 fib_entry_src_collect_forwarding_ctx_t ctx = {
512 .fib_entry = fib_entry,
514 .n_recursive_constrained = 0,
516 .preference = 0xffff,
520 * As an optimisation we allocate the vector of next-hops to be sized
521 * equal to the maximum nuber of paths we will need, which is also the
522 * most likely number we will need, since in most cases the paths are 'up'.
524 vec_validate(ctx.next_hops, fib_path_list_get_n_paths(esrc->fes_pl));
525 vec_reset_length(ctx.next_hops);
527 lb_proto = fib_forw_chain_type_to_dpo_proto(fct);
529 fib_path_list_walk(esrc->fes_pl,
530 fib_entry_src_collect_forwarding,
533 if (esrc->fes_entry_flags & FIB_ENTRY_FLAG_EXCLUSIVE)
536 * the client provided the DPO that the entry should link to.
537 * all entries must link to a LB, so if it is an LB already
538 * then we can use it.
540 if ((1 == vec_len(ctx.next_hops)) &&
541 (DPO_LOAD_BALANCE == ctx.next_hops[0].path_dpo.dpoi_type))
543 dpo_copy(dpo_lb, &ctx.next_hops[0].path_dpo);
544 dpo_reset(&ctx.next_hops[0].path_dpo);
549 if (!dpo_id_is_valid(dpo_lb))
554 if (esrc->fes_entry_flags & FIB_ENTRY_FLAG_MULTICAST)
559 MPLS_IS_REPLICATE | replicate_create(0, lb_proto));
563 fib_protocol_t flow_hash_proto;
564 flow_hash_config_t fhc;
567 * if the protocol for the LB we are building does not match that
568 * of the fib_entry (i.e. we are build the [n]EOS LB for an IPv[46]
569 * then the fib_index is not an index that relates to the table
570 * type we need. So get the default flow-hash config instead.
572 flow_hash_proto = dpo_proto_to_fib(lb_proto);
573 if (fib_entry->fe_prefix.fp_proto != flow_hash_proto)
575 fhc = fib_table_get_default_flow_hash_config(flow_hash_proto);
579 fhc = fib_table_get_flow_hash_config(fib_entry->fe_fib_index,
586 load_balance_create(0, lb_proto, fhc));
590 if (esrc->fes_entry_flags & FIB_ENTRY_FLAG_MULTICAST)
595 replicate_multipath_update(dpo_lb, ctx.next_hops);
599 load_balance_multipath_update(dpo_lb,
601 fib_entry_calc_lb_flags(&ctx));
602 vec_free(ctx.next_hops);
605 * if this entry is sourced by the uRPF-exempt source then we
606 * append the always present local0 interface (index 0) to the
607 * uRPF list so it is not empty. that way packets pass the loose check.
609 index_t ui = fib_path_list_get_urpf(esrc->fes_pl);
611 if ((fib_entry_is_sourced(fib_entry_get_index(fib_entry),
612 FIB_SOURCE_URPF_EXEMPT) ||
613 (esrc->fes_entry_flags & FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT))&&
614 (0 == fib_urpf_check_size(ui)))
617 * The uRPF list we get from the path-list is shared by all
618 * other users of the list, but the uRPF exemption applies
619 * only to this prefix. So we need our own list.
621 ui = fib_urpf_list_alloc_and_lock();
622 fib_urpf_list_append(ui, 0);
623 fib_urpf_list_bake(ui);
624 load_balance_set_urpf(dpo_lb->dpoi_index, ui);
625 fib_urpf_list_unlock(ui);
629 load_balance_set_urpf(dpo_lb->dpoi_index, ui);
631 load_balance_set_fib_entry_flags(dpo_lb->dpoi_index,
632 fib_entry_get_flags_i(fib_entry));
637 fib_entry_src_action_install (fib_entry_t *fib_entry,
641 * Install the forwarding chain for the given source into the forwarding
644 fib_forward_chain_type_t fct;
645 fib_entry_src_t *esrc;
648 fct = fib_entry_get_default_chain_type(fib_entry);
649 esrc = fib_entry_src_find(fib_entry, source);
652 * Every entry has its own load-balance object. All changes to the entry's
653 * forwarding result in an inplace modify of the load-balance. This means
654 * the load-balance object only needs to be added to the forwarding
655 * DB once, when it is created.
657 insert = !dpo_id_is_valid(&fib_entry->fe_lb);
659 fib_entry_src_mk_lb(fib_entry, esrc, fct, &fib_entry->fe_lb);
661 ASSERT(dpo_id_is_valid(&fib_entry->fe_lb));
662 FIB_ENTRY_DBG(fib_entry, "install: %d", fib_entry->fe_lb);
665 * insert the adj into the data-plane forwarding trie
669 fib_table_fwding_dpo_update(fib_entry->fe_fib_index,
670 &fib_entry->fe_prefix,
675 * if any of the other chain types are already created they will need
678 fib_entry_delegate_type_t fdt;
679 fib_entry_delegate_t *fed;
681 FOR_EACH_DELEGATE_CHAIN(fib_entry, fdt, fed,
683 fib_entry_src_mk_lb(fib_entry, esrc,
684 fib_entry_delegate_type_to_chain_type(fdt),
690 fib_entry_src_action_uninstall (fib_entry_t *fib_entry)
693 * uninstall the forwarding chain from the forwarding tables
695 FIB_ENTRY_DBG(fib_entry, "uninstall");
697 if (dpo_id_is_valid(&fib_entry->fe_lb))
699 fib_table_fwding_dpo_remove(
700 fib_entry->fe_fib_index,
701 &fib_entry->fe_prefix,
704 dpo_reset(&fib_entry->fe_lb);
709 fib_entry_recursive_loop_detect_i (fib_node_index_t path_list_index)
711 fib_node_index_t *entries = NULL;
713 fib_path_list_recursive_loop_detect(path_list_index, &entries);
719 * fib_entry_src_action_copy
721 * copy a source data from another entry to this one
724 fib_entry_src_action_copy (fib_entry_t *fib_entry,
725 const fib_entry_src_t *orig_src)
727 fib_entry_src_t *esrc;
729 esrc = fib_entry_src_find_or_create(fib_entry,
731 orig_src->fes_entry_flags);
733 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_copy,
734 (orig_src, fib_entry, esrc));
736 fib_path_list_unlock(esrc->fes_pl);
739 * copy over all the data ...
741 esrc->fes_flags = orig_src->fes_flags;
742 esrc->fes_pl = orig_src->fes_pl;
747 esrc->fes_ref_count = 1;
748 esrc->fes_flags |= FIB_ENTRY_SRC_FLAG_INHERITED;
749 esrc->fes_flags &= ~(FIB_ENTRY_SRC_FLAG_ACTIVE |
750 FIB_ENTRY_SRC_FLAG_CONTRIBUTING);
751 esrc->fes_entry_flags &= ~FIB_ENTRY_FLAG_COVERED_INHERIT;
754 * the source owns a lock on the entry
756 fib_path_list_lock(esrc->fes_pl);
757 fib_entry_lock(fib_entry_get_index(fib_entry));
763 * fib_entry_src_action_update
765 * copy a source data from another entry to this one
767 static fib_entry_src_t *
768 fib_entry_src_action_update_from_cover (fib_entry_t *fib_entry,
769 const fib_entry_src_t *orig_src)
771 fib_entry_src_t *esrc;
773 esrc = fib_entry_src_find_or_create(fib_entry,
775 orig_src->fes_entry_flags);
778 * the source owns a lock on the entry
780 fib_path_list_unlock(esrc->fes_pl);
781 esrc->fes_pl = orig_src->fes_pl;
782 fib_path_list_lock(esrc->fes_pl);
787 static fib_table_walk_rc_t
788 fib_entry_src_covered_inherit_add_i (fib_entry_t *fib_entry,
789 const fib_entry_src_t *cover_src)
791 fib_entry_src_t *esrc;
793 esrc = fib_entry_src_find(fib_entry, cover_src->fes_src);
795 if (cover_src == esrc)
797 return (FIB_TABLE_WALK_CONTINUE);
803 * the covered entry already has this source.
805 if (esrc->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT)
808 * the covered source is itself a COVERED_INHERIT, i.e.
809 * it also pushes this source down the sub-tree.
810 * We consider this more specfic covered to be the owner
811 * of the sub-tree from this point down.
813 return (FIB_TABLE_WALK_SUB_TREE_STOP);
815 if (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_INHERITED)
818 * The covered's source data has been inherited, presumably
819 * from this cover, i.e. this is a modify.
821 esrc = fib_entry_src_action_update_from_cover(fib_entry, cover_src);
822 fib_entry_source_change(fib_entry, esrc->fes_src, esrc->fes_src);
827 * The covered's source was not inherited and it is also
828 * not inherting. Nevertheless, it still owns the sub-tree from
831 return (FIB_TABLE_WALK_SUB_TREE_STOP);
837 * The covered does not have this source - add it.
839 fib_source_t best_source;
841 best_source = fib_entry_get_best_source(
842 fib_entry_get_index(fib_entry));
844 fib_entry_src_action_copy(fib_entry, cover_src);
845 fib_entry_source_change(fib_entry, best_source, cover_src->fes_src);
848 return (FIB_TABLE_WALK_CONTINUE);
851 static fib_table_walk_rc_t
852 fib_entry_src_covered_inherit_walk_add (fib_node_index_t fei,
855 return (fib_entry_src_covered_inherit_add_i(fib_entry_get(fei), ctx));
858 static fib_table_walk_rc_t
859 fib_entry_src_covered_inherit_walk_remove (fib_node_index_t fei,
862 fib_entry_src_t *cover_src, *esrc;
863 fib_entry_t *fib_entry;
865 fib_entry = fib_entry_get(fei);
868 esrc = fib_entry_src_find(fib_entry, cover_src->fes_src);
870 if (cover_src == esrc)
872 return (FIB_TABLE_WALK_CONTINUE);
878 * the covered entry already has this source.
880 if (esrc->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT)
883 * the covered source is itself a COVERED_INHERIT, i.e.
884 * it also pushes this source down the sub-tree.
885 * We consider this more specfic covered to be the owner
886 * of the sub-tree from this point down.
888 return (FIB_TABLE_WALK_SUB_TREE_STOP);
890 if (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_INHERITED)
893 * The covered's source data has been inherited, presumably
896 fib_entry_src_flag_t remaining;
898 remaining = fib_entry_special_remove(fei, cover_src->fes_src);
900 ASSERT(FIB_ENTRY_SRC_FLAG_ADDED == remaining);
905 * The covered's source was not inherited and it is also
906 * not inherting. Nevertheless, it still owns the sub-tree from
909 return (FIB_TABLE_WALK_SUB_TREE_STOP);
915 * The covered does not have this source - that's an error,
916 * since it should have inherited, but there is nothing we can do
920 return (FIB_TABLE_WALK_CONTINUE);
924 fib_entry_src_inherit (const fib_entry_t *cover,
925 fib_entry_t *covered)
927 CLIB_UNUSED(fib_source_t source);
928 const fib_entry_src_t *src;
930 FOR_EACH_SRC_ADDED(cover, src, source,
932 if ((src->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT) ||
933 (src->fes_flags & FIB_ENTRY_SRC_FLAG_INHERITED))
935 fib_entry_src_covered_inherit_add_i(covered, src);
941 fib_entry_src_covered_inherit_add (fib_entry_t *fib_entry,
945 fib_entry_src_t *esrc;
947 esrc = fib_entry_src_find(fib_entry, source);
949 ASSERT(esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ACTIVE);
951 if ((esrc->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT) ||
952 (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_INHERITED))
954 fib_table_sub_tree_walk(fib_entry->fe_fib_index,
955 fib_entry->fe_prefix.fp_proto,
956 &fib_entry->fe_prefix,
957 fib_entry_src_covered_inherit_walk_add,
963 fib_entry_src_covered_inherit_remove (fib_entry_t *fib_entry,
964 fib_entry_src_t *esrc)
967 ASSERT(!(esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ACTIVE));
969 if (esrc->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT)
971 fib_table_sub_tree_walk(fib_entry->fe_fib_index,
972 fib_entry->fe_prefix.fp_proto,
973 &fib_entry->fe_prefix,
974 fib_entry_src_covered_inherit_walk_remove,
980 fib_entry_src_action_activate (fib_entry_t *fib_entry,
984 int houston_we_are_go_for_install;
985 const fib_entry_src_vft_t *vft;
986 fib_entry_src_t *esrc;
988 esrc = fib_entry_src_find(fib_entry, source);
990 ASSERT(!(esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ACTIVE));
991 ASSERT(esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ADDED);
993 esrc->fes_flags |= (FIB_ENTRY_SRC_FLAG_ACTIVE |
994 FIB_ENTRY_SRC_FLAG_CONTRIBUTING);
995 vft = fib_entry_src_get_vft(esrc);
997 if (NULL != vft->fesv_activate)
999 houston_we_are_go_for_install = vft->fesv_activate(esrc, fib_entry);
1004 * the source is not providing an activate function, we'll assume
1005 * therefore it has no objection to installing the entry
1007 houston_we_are_go_for_install = !0;
1011 * link to the path-list provided by the source, and go check
1012 * if that forms any loops in the graph.
1014 fib_entry->fe_parent = esrc->fes_pl;
1015 fib_entry->fe_sibling =
1016 fib_path_list_child_add(fib_entry->fe_parent,
1017 FIB_NODE_TYPE_ENTRY,
1018 fib_entry_get_index(fib_entry));
1020 fib_entry_recursive_loop_detect_i(fib_entry->fe_parent);
1022 FIB_ENTRY_DBG(fib_entry, "activate: %d",
1023 fib_entry->fe_parent);
1026 * If this source should push its state to covered prefixs, do that now.
1028 fib_entry_src_covered_inherit_add(fib_entry, source);
1030 if (0 != houston_we_are_go_for_install)
1032 fib_entry_src_action_install(fib_entry, source);
1036 fib_entry_src_action_uninstall(fib_entry);
1041 fib_entry_src_action_deactivate (fib_entry_t *fib_entry,
1042 fib_source_t source)
1045 fib_node_index_t path_list_index;
1046 fib_entry_src_t *esrc;
1048 esrc = fib_entry_src_find(fib_entry, source);
1050 ASSERT(esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ACTIVE);
1052 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_deactivate,
1055 esrc->fes_flags &= ~(FIB_ENTRY_SRC_FLAG_ACTIVE |
1056 FIB_ENTRY_SRC_FLAG_CONTRIBUTING);
1058 FIB_ENTRY_DBG(fib_entry, "deactivate: %d", fib_entry->fe_parent);
1061 * If this source should pull its state from covered prefixs, do that now.
1062 * If this source also has the INHERITED flag set then it has a cover
1063 * that wants to push down forwarding. We only want the covereds to see
1066 fib_entry_src_covered_inherit_remove(fib_entry, esrc);
1069 * un-link from an old path-list. Check for any loops this will clear
1071 path_list_index = fib_entry->fe_parent;
1072 fib_entry->fe_parent = FIB_NODE_INDEX_INVALID;
1074 fib_entry_recursive_loop_detect_i(path_list_index);
1077 * this will unlock the path-list, so it may be invalid thereafter.
1079 fib_path_list_child_remove(path_list_index, fib_entry->fe_sibling);
1080 fib_entry->fe_sibling = FIB_NODE_INDEX_INVALID;
1084 fib_entry_src_action_fwd_update (const fib_entry_t *fib_entry,
1085 fib_source_t source)
1087 fib_entry_src_t *esrc;
1089 vec_foreach(esrc, fib_entry->fe_srcs)
1091 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_fwd_update,
1092 (esrc, fib_entry, source));
1097 fib_entry_src_action_reactivate (fib_entry_t *fib_entry,
1098 fib_source_t source)
1100 fib_node_index_t path_list_index;
1101 const fib_entry_src_vft_t *vft;
1102 fib_entry_src_t *esrc;
1103 int remain_installed;
1105 esrc = fib_entry_src_find(fib_entry, source);
1107 ASSERT(esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ACTIVE);
1109 FIB_ENTRY_DBG(fib_entry, "reactivate: %d to %d",
1110 fib_entry->fe_parent,
1114 * call the source to reactive and get the go/no-go to remain installed
1116 vft = fib_entry_src_get_vft(esrc);
1118 if (NULL != vft->fesv_reactivate)
1120 remain_installed = vft->fesv_reactivate(esrc, fib_entry);
1124 remain_installed = 1;
1127 if (fib_entry->fe_parent != esrc->fes_pl)
1130 * un-link from an old path-list. Check for any loops this will clear
1132 path_list_index = fib_entry->fe_parent;
1133 fib_entry->fe_parent = FIB_NODE_INDEX_INVALID;
1136 * temporary lock so it doesn't get deleted when this entry is no
1139 fib_path_list_lock(path_list_index);
1142 * this entry is no longer a child. after unlinking check if any loops
1145 fib_path_list_child_remove(path_list_index,
1146 fib_entry->fe_sibling);
1148 fib_entry_recursive_loop_detect_i(path_list_index);
1151 * link to the path-list provided by the source, and go check
1152 * if that forms any loops in the graph.
1154 fib_entry->fe_parent = esrc->fes_pl;
1155 fib_entry->fe_sibling =
1156 fib_path_list_child_add(fib_entry->fe_parent,
1157 FIB_NODE_TYPE_ENTRY,
1158 fib_entry_get_index(fib_entry));
1160 fib_entry_recursive_loop_detect_i(fib_entry->fe_parent);
1161 fib_path_list_unlock(path_list_index);
1164 * If this source should push its state to covered prefixs, do that now.
1166 fib_entry_src_covered_inherit_add(fib_entry, source);
1169 if (!remain_installed)
1171 fib_entry_src_action_uninstall(fib_entry);
1175 fib_entry_src_action_install(fib_entry, source);
1177 fib_entry_src_action_fwd_update(fib_entry, source);
1181 fib_entry_src_action_installed (const fib_entry_t *fib_entry,
1182 fib_source_t source)
1184 fib_entry_src_t *esrc;
1186 esrc = fib_entry_src_find(fib_entry, source);
1188 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_installed,
1191 fib_entry_src_action_fwd_update(fib_entry, source);
1195 * fib_entry_src_action_add
1197 * Adding a source can result in a new fib_entry being created, which
1198 * can inturn mean the pool is realloc'd and thus the entry passed as
1199 * an argument it also realloc'd
1200 * @return the original entry
1203 fib_entry_src_action_add (fib_entry_t *fib_entry,
1204 fib_source_t source,
1205 fib_entry_flag_t flags,
1206 const dpo_id_t *dpo)
1208 fib_node_index_t fib_entry_index;
1209 fib_entry_src_t *esrc;
1211 esrc = fib_entry_src_find_or_create(fib_entry, source, flags);
1213 ASSERT(esrc->fes_ref_count < 255);
1214 esrc->fes_ref_count++;
1216 if (flags != esrc->fes_entry_flags)
1218 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_flags_change,
1219 (esrc, fib_entry, flags));
1221 esrc->fes_entry_flags = flags;
1223 if (1 != esrc->fes_ref_count)
1226 * we only want to add the source on the 0->1 transition
1232 * save variable so we can recover from a fib_entry realloc.
1234 fib_entry_index = fib_entry_get_index(fib_entry);
1236 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_add,
1240 fib_entry_get_dpo_proto(fib_entry),
1243 fib_entry = fib_entry_get(fib_entry_index);
1245 esrc->fes_flags |= FIB_ENTRY_SRC_FLAG_ADDED;
1247 fib_path_list_lock(esrc->fes_pl);
1250 * the source owns a lock on the entry
1252 fib_entry_lock(fib_entry_get_index(fib_entry));
1258 * fib_entry_src_action_update
1260 * Adding a source can result in a new fib_entry being created, which
1261 * can inturn mean the pool is realloc'd and thus the entry passed as
1262 * an argument it also realloc'd
1263 * @return the original entry
1266 fib_entry_src_action_update (fib_entry_t *fib_entry,
1267 fib_source_t source,
1268 fib_entry_flag_t flags,
1269 const dpo_id_t *dpo)
1271 fib_node_index_t fib_entry_index, old_path_list_index;
1272 fib_entry_src_t *esrc;
1274 esrc = fib_entry_src_find_or_create(fib_entry, source, flags);
1278 return (fib_entry_src_action_add(fib_entry, source, flags, dpo));
1281 old_path_list_index = esrc->fes_pl;
1282 esrc->fes_entry_flags = flags;
1285 * save variable so we can recover from a fib_entry realloc.
1287 fib_entry_index = fib_entry_get_index(fib_entry);
1289 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_add,
1293 fib_entry_get_dpo_proto(fib_entry),
1296 fib_entry = fib_entry_get(fib_entry_index);
1298 esrc->fes_flags |= FIB_ENTRY_SRC_FLAG_ADDED;
1300 fib_path_list_lock(esrc->fes_pl);
1301 fib_path_list_unlock(old_path_list_index);
1306 fib_entry_src_flag_t
1307 fib_entry_src_action_remove_or_update_inherit (fib_entry_t *fib_entry,
1308 fib_source_t source)
1310 fib_entry_src_t *esrc;
1312 esrc = fib_entry_src_find(fib_entry, source);
1315 return (FIB_ENTRY_SRC_FLAG_ACTIVE);
1317 if ((esrc->fes_entry_flags & FIB_ENTRY_FLAG_COVERED_INHERIT) &&
1318 (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_INHERITED))
1320 fib_entry_src_t *cover_src;
1321 fib_node_index_t coveri;
1325 * this source was pushing inherited state, but so is its
1326 * cover. Now that this source is going away, we need to
1327 * pull the covers forwarding and use it to update the covereds.
1328 * Go grab the path-list from the cover, rather than start a walk from
1329 * the cover, so we don't recursively update this entry.
1331 coveri = fib_table_get_less_specific(fib_entry->fe_fib_index,
1332 &fib_entry->fe_prefix);
1335 * only the default route has itself as its own cover, but the
1336 * default route cannot have inherited from something else.
1338 ASSERT(coveri != fib_entry_get_index(fib_entry));
1340 cover = fib_entry_get(coveri);
1341 cover_src = fib_entry_src_find(cover, source);
1343 ASSERT(NULL != cover_src);
1345 esrc = fib_entry_src_action_update_from_cover(fib_entry, cover_src);
1346 esrc->fes_entry_flags &= ~FIB_ENTRY_FLAG_COVERED_INHERIT;
1349 * Now push the new state from the cover down to the covereds
1351 fib_entry_src_covered_inherit_add(fib_entry, source);
1353 return (esrc->fes_flags);
1357 return (fib_entry_src_action_remove(fib_entry, source));
1361 fib_entry_src_flag_t
1362 fib_entry_src_action_remove (fib_entry_t *fib_entry,
1363 fib_source_t source)
1366 fib_node_index_t old_path_list;
1367 fib_entry_src_flag_t sflags;
1368 fib_entry_src_t *esrc;
1370 esrc = fib_entry_src_find(fib_entry, source);
1373 return (FIB_ENTRY_SRC_FLAG_ACTIVE);
1375 esrc->fes_ref_count--;
1376 sflags = esrc->fes_flags;
1378 if (0 != esrc->fes_ref_count)
1381 * only remove the source on the 1->0 transisition
1386 if (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ACTIVE)
1388 fib_entry_src_action_deactivate(fib_entry, source);
1390 else if (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_CONTRIBUTING)
1392 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_deactivate,
1394 esrc->fes_flags &= ~FIB_ENTRY_SRC_FLAG_CONTRIBUTING;
1397 old_path_list = esrc->fes_pl;
1399 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_remove, (esrc));
1401 fib_path_list_unlock(old_path_list);
1402 fib_entry_unlock(fib_entry_get_index(fib_entry));
1404 sflags &= ~FIB_ENTRY_SRC_FLAG_ADDED;
1405 fib_entry_src_action_deinit(fib_entry, source);
1411 * fib_route_attached_cross_table
1413 * Return true the the route is attached via an interface that
1414 * is not in the same table as the route
1417 fib_route_attached_cross_table (const fib_entry_t *fib_entry,
1418 const fib_route_path_t *rpath)
1421 * - All zeros next-hop
1422 * - a valid interface
1423 * - entry's fib index not equeal to interface's index
1425 if (ip46_address_is_zero(&rpath->frp_addr) &&
1426 (~0 != rpath->frp_sw_if_index) &&
1427 !(rpath->frp_flags & FIB_ROUTE_PATH_DVR) &&
1428 (fib_entry->fe_fib_index !=
1429 fib_table_get_index_for_sw_if_index(fib_entry_get_proto(fib_entry),
1430 rpath->frp_sw_if_index)))
1438 * Return true if the path is attached
1441 fib_path_is_attached (const fib_route_path_t *rpath)
1444 * DVR paths are not attached, since we are not playing the
1445 * L3 game with these
1447 if (rpath->frp_flags & FIB_ROUTE_PATH_DVR)
1453 * - All zeros next-hop
1454 * - a valid interface
1456 if (ip46_address_is_zero(&rpath->frp_addr) &&
1457 (~0 != rpath->frp_sw_if_index))
1461 else if (rpath->frp_flags & FIB_ROUTE_PATH_ATTACHED)
1468 fib_path_list_flags_t
1469 fib_entry_src_flags_2_path_list_flags (fib_entry_flag_t eflags)
1471 fib_path_list_flags_t plf = FIB_PATH_LIST_FLAG_NONE;
1473 if (eflags & FIB_ENTRY_FLAG_DROP)
1475 plf |= FIB_PATH_LIST_FLAG_DROP;
1477 if (eflags & FIB_ENTRY_FLAG_EXCLUSIVE)
1479 plf |= FIB_PATH_LIST_FLAG_EXCLUSIVE;
1481 if (eflags & FIB_ENTRY_FLAG_LOCAL)
1483 plf |= FIB_PATH_LIST_FLAG_LOCAL;
1490 fib_entry_flags_update (const fib_entry_t *fib_entry,
1491 const fib_route_path_t *rpath,
1492 fib_path_list_flags_t *pl_flags,
1493 fib_entry_src_t *esrc)
1495 if ((esrc->fes_src == FIB_SOURCE_API) ||
1496 (esrc->fes_src == FIB_SOURCE_CLI))
1498 if (fib_path_is_attached(rpath))
1500 esrc->fes_entry_flags |= FIB_ENTRY_FLAG_ATTACHED;
1504 esrc->fes_entry_flags &= ~FIB_ENTRY_FLAG_ATTACHED;
1506 if (rpath->frp_flags & FIB_ROUTE_PATH_DEAG)
1508 esrc->fes_entry_flags |= FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT;
1511 if (fib_route_attached_cross_table(fib_entry, rpath) &&
1512 !(esrc->fes_entry_flags & FIB_ENTRY_FLAG_NO_ATTACHED_EXPORT))
1514 esrc->fes_entry_flags |= FIB_ENTRY_FLAG_IMPORT;
1518 esrc->fes_entry_flags &= ~FIB_ENTRY_FLAG_IMPORT;
1523 * fib_entry_src_action_add
1525 * Adding a source can result in a new fib_entry being created, which
1526 * can inturn mean the pool is realloc'd and thus the entry passed as
1527 * an argument it also realloc'd
1531 fib_entry_src_action_path_add (fib_entry_t *fib_entry,
1532 fib_source_t source,
1533 fib_entry_flag_t flags,
1534 const fib_route_path_t *rpath)
1536 fib_node_index_t old_path_list, fib_entry_index;
1537 fib_path_list_flags_t pl_flags;
1538 fib_entry_src_t *esrc;
1541 * save variable so we can recover from a fib_entry realloc.
1543 fib_entry_index = fib_entry_get_index(fib_entry);
1545 esrc = fib_entry_src_find(fib_entry, source);
1549 fib_entry_src_action_add(fib_entry,
1553 fib_entry_get_dpo_proto(fib_entry)));
1554 esrc = fib_entry_src_find(fib_entry, source);
1558 * we are no doubt modifying a path-list. If the path-list
1559 * is shared, and hence not modifiable, then the index returned
1560 * will be for a different path-list. This FIB entry to needs
1561 * to maintain its lock appropriately.
1563 old_path_list = esrc->fes_pl;
1565 ASSERT(FIB_ENTRY_SRC_VFT_EXISTS(esrc, fesv_path_add));
1567 pl_flags = fib_entry_src_flags_2_path_list_flags(fib_entry_get_flags_i(fib_entry));
1568 fib_entry_flags_update(fib_entry, rpath, &pl_flags, esrc);
1570 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_path_add,
1571 (esrc, fib_entry, pl_flags, rpath));
1572 fib_entry = fib_entry_get(fib_entry_index);
1574 fib_path_list_lock(esrc->fes_pl);
1575 fib_path_list_unlock(old_path_list);
1581 * fib_entry_src_action_swap
1583 * The source is providing new paths to replace the old ones.
1584 * Adding a source can result in a new fib_entry being created, which
1585 * can inturn mean the pool is realloc'd and thus the entry passed as
1586 * an argument it also realloc'd
1590 fib_entry_src_action_path_swap (fib_entry_t *fib_entry,
1591 fib_source_t source,
1592 fib_entry_flag_t flags,
1593 const fib_route_path_t *rpaths)
1595 fib_node_index_t old_path_list, fib_entry_index;
1596 fib_path_list_flags_t pl_flags;
1597 const fib_route_path_t *rpath;
1598 fib_entry_src_t *esrc;
1600 esrc = fib_entry_src_find(fib_entry, source);
1603 * save variable so we can recover from a fib_entry realloc.
1605 fib_entry_index = fib_entry_get_index(fib_entry);
1609 fib_entry = fib_entry_src_action_add(fib_entry,
1613 fib_entry_get_dpo_proto(fib_entry)));
1614 esrc = fib_entry_src_find(fib_entry, source);
1618 if (flags != esrc->fes_entry_flags)
1620 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_flags_change,
1621 (esrc, fib_entry, flags));
1623 esrc->fes_entry_flags = flags;
1627 * swapping paths may create a new path-list (or may use an existing shared)
1628 * but we are certainly getting a different one. This FIB entry to needs
1629 * to maintain its lock appropriately.
1631 old_path_list = esrc->fes_pl;
1633 ASSERT(FIB_ENTRY_SRC_VFT_EXISTS(esrc, fesv_path_swap));
1635 pl_flags = fib_entry_src_flags_2_path_list_flags(flags);
1637 vec_foreach(rpath, rpaths)
1639 fib_entry_flags_update(fib_entry, rpath, &pl_flags, esrc);
1642 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_path_swap,
1646 fib_entry = fib_entry_get(fib_entry_index);
1648 fib_path_list_lock(esrc->fes_pl);
1649 fib_path_list_unlock(old_path_list);
1654 fib_entry_src_flag_t
1655 fib_entry_src_action_path_remove (fib_entry_t *fib_entry,
1656 fib_source_t source,
1657 const fib_route_path_t *rpath)
1659 fib_path_list_flags_t pl_flags;
1660 fib_node_index_t old_path_list;
1661 fib_entry_src_t *esrc;
1663 esrc = fib_entry_src_find(fib_entry, source);
1665 ASSERT(NULL != esrc);
1666 ASSERT(esrc->fes_flags & FIB_ENTRY_SRC_FLAG_ADDED);
1669 * we no doubt modifying a path-list. If the path-list
1670 * is shared, and hence not modifiable, then the index returned
1671 * will be for a different path-list. This FIB entry to needs
1672 * to maintain its lock appropriately.
1674 old_path_list = esrc->fes_pl;
1676 ASSERT(FIB_ENTRY_SRC_VFT_EXISTS(esrc, fesv_path_remove));
1678 pl_flags = fib_entry_src_flags_2_path_list_flags(fib_entry_get_flags_i(fib_entry));
1679 fib_entry_flags_update(fib_entry, rpath, &pl_flags, esrc);
1681 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_path_remove,
1682 (esrc, pl_flags, rpath));
1685 * lock the new path-list, unlock the old if it had one
1687 fib_path_list_unlock(old_path_list);
1689 if (FIB_NODE_INDEX_INVALID != esrc->fes_pl) {
1690 fib_path_list_lock(esrc->fes_pl);
1691 return (FIB_ENTRY_SRC_FLAG_ADDED);
1696 * no more paths left from this source
1698 fib_entry_src_action_remove_or_update_inherit(fib_entry, source);
1699 return (FIB_ENTRY_SRC_FLAG_NONE);
1704 fib_entry_src_format (fib_entry_t *fib_entry,
1705 fib_source_t source,
1708 fib_entry_src_t *esrc;
1710 esrc = fib_entry_src_find(fib_entry, source);
1712 FIB_ENTRY_SRC_VFT_INVOKE_AND_RETURN(esrc, fesv_format, (esrc, s));
1718 fib_entry_get_adj_for_source (fib_node_index_t fib_entry_index,
1719 fib_source_t source)
1721 fib_entry_t *fib_entry;
1722 fib_entry_src_t *esrc;
1724 if (FIB_NODE_INDEX_INVALID == fib_entry_index)
1725 return (ADJ_INDEX_INVALID);
1727 fib_entry = fib_entry_get(fib_entry_index);
1728 esrc = fib_entry_src_find(fib_entry, source);
1732 if (FIB_NODE_INDEX_INVALID != esrc->fes_pl)
1734 return (fib_path_list_get_adj(
1736 fib_entry_get_default_chain_type(fib_entry)));
1739 return (ADJ_INDEX_INVALID);
1743 fib_entry_get_dpo_for_source (fib_node_index_t fib_entry_index,
1744 fib_source_t source,
1747 fib_entry_t *fib_entry;
1748 fib_entry_src_t *esrc;
1750 if (FIB_NODE_INDEX_INVALID == fib_entry_index)
1753 fib_entry = fib_entry_get(fib_entry_index);
1754 esrc = fib_entry_src_find(fib_entry, source);
1758 if (FIB_NODE_INDEX_INVALID != esrc->fes_pl)
1760 fib_path_list_contribute_forwarding(
1762 fib_entry_get_default_chain_type(fib_entry),
1763 FIB_PATH_LIST_FWD_FLAG_NONE,
1766 return (dpo_id_is_valid(dpo));
1773 fib_entry_get_resolving_interface_for_source (fib_node_index_t entry_index,
1774 fib_source_t source)
1776 fib_entry_t *fib_entry;
1777 fib_entry_src_t *esrc;
1779 fib_entry = fib_entry_get(entry_index);
1781 esrc = fib_entry_src_find(fib_entry, source);
1785 if (FIB_NODE_INDEX_INVALID != esrc->fes_pl)
1787 return (fib_path_list_get_resolving_interface(esrc->fes_pl));
1794 fib_entry_get_flags_for_source (fib_node_index_t entry_index,
1795 fib_source_t source)
1797 fib_entry_t *fib_entry;
1798 fib_entry_src_t *esrc;
1800 fib_entry = fib_entry_get(entry_index);
1802 esrc = fib_entry_src_find(fib_entry, source);
1806 return (esrc->fes_entry_flags);
1809 return (FIB_ENTRY_FLAG_NONE);
1813 fib_entry_get_flags_i (const fib_entry_t *fib_entry)
1815 fib_entry_flag_t flags;
1818 * the vector of sources is deliberately arranged in priority order
1820 if (0 == vec_len(fib_entry->fe_srcs))
1822 flags = FIB_ENTRY_FLAG_NONE;
1826 fib_entry_src_t *esrc;
1828 esrc = vec_elt_at_index(fib_entry->fe_srcs, 0);
1829 flags = esrc->fes_entry_flags;
1836 fib_entry_set_source_data (fib_node_index_t fib_entry_index,
1837 fib_source_t source,
1840 fib_entry_t *fib_entry;
1841 fib_entry_src_t *esrc;
1843 fib_entry = fib_entry_get(fib_entry_index);
1844 esrc = fib_entry_src_find(fib_entry, source);
1848 FIB_ENTRY_SRC_VFT_INVOKE(esrc, fesv_set_data,
1849 (esrc, fib_entry, data));
1854 fib_entry_get_source_data (fib_node_index_t fib_entry_index,
1855 fib_source_t source)
1857 fib_entry_t *fib_entry;
1858 fib_entry_src_t *esrc;
1860 fib_entry = fib_entry_get(fib_entry_index);
1861 esrc = fib_entry_src_find(fib_entry, source);
1865 FIB_ENTRY_SRC_VFT_INVOKE_AND_RETURN(esrc, fesv_get_data,
1872 fib_entry_src_module_init (void)
1874 fib_entry_src_rr_register();
1875 fib_entry_src_interface_register();
1876 fib_entry_src_interpose_register();
1877 fib_entry_src_default_route_register();
1878 fib_entry_src_special_register();
1879 fib_entry_src_api_register();
1880 fib_entry_src_adj_register();
1881 fib_entry_src_mpls_register();
1882 fib_entry_src_lisp_register();