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 <vlib/vlib.h>
18 #include <vnet/mfib/mfib_entry.h>
19 #include <vnet/fib/fib_path_list.h>
21 #include <vnet/dpo/drop_dpo.h>
22 #include <vnet/dpo/replicate_dpo.h>
28 #DEFIne MFIB_ENTRY_DBG(_e, _fmt, _args...) \
31 __tmp = format(__tmp, "e:[%d:%U", \
32 mfib_entry_get_index(_e), \
33 format_ip46_address, \
34 &_e->mfe_prefix.fp_grp_addr, \
36 __tmp = format(__tmp, "/%d,", \
37 _e->mfe_prefix.fp_len); \
38 __tmp = format(__tmp, "%U]", \
39 mfib_entry_get_index(_e), \
40 format_ip46_address, \
41 &_e->mfe_prefix.fp_src_addr, \
43 __tmp = format(__tmp, _fmt, ##_args); \
44 clib_warning("%s", __tmp); \
48 #define MFIB_ENTRY_DBG(_e, _fmt, _args...)
52 * MFIB extensions to each path
54 typedef struct mfib_path_ext_t_
56 mfib_itf_flags_t mfpe_flags;
57 fib_node_index_t mfpe_path;
61 * The source of an MFIB entry
63 typedef struct mfib_entry_src_t_
66 * Which source this is
68 mfib_source_t mfes_src;
73 mfib_entry_flags_t mfes_flags;
76 * The path-list of forwarding interfaces
78 fib_node_index_t mfes_pl;
83 fib_rpf_id_t mfes_rpf_id;
86 * Hash table of path extensions
88 mfib_path_ext_t *mfes_exts;
91 * The hash table of all interfaces.
92 * This is forwarding time information derived from the paths
93 * and their extensions.
95 mfib_itf_t *mfes_itfs;
99 * Pool of path extensions
101 static mfib_path_ext_t *mfib_path_ext_pool;
104 * String names for each source
106 static const char *mfib_source_names[] = MFIB_SOURCE_NAMES;
109 * Pool for all fib_entries
111 mfib_entry_t *mfib_entry_pool;
114 mfib_entry_get_node (fib_node_index_t index)
116 return ((fib_node_t*)mfib_entry_get(index));
119 static fib_protocol_t
120 mfib_entry_get_proto (const mfib_entry_t * mfib_entry)
122 return (mfib_entry->mfe_prefix.fp_proto);
125 fib_forward_chain_type_t
126 mfib_entry_get_default_chain_type (const mfib_entry_t *mfib_entry)
128 switch (mfib_entry->mfe_prefix.fp_proto)
130 case FIB_PROTOCOL_IP4:
131 return (FIB_FORW_CHAIN_TYPE_MCAST_IP4);
132 case FIB_PROTOCOL_IP6:
133 return (FIB_FORW_CHAIN_TYPE_MCAST_IP6);
134 case FIB_PROTOCOL_MPLS:
138 return (FIB_FORW_CHAIN_TYPE_MCAST_IP4);
142 format_mfib_entry_dpo (u8 * s, va_list * args)
144 index_t fei = va_arg(*args, index_t);
145 CLIB_UNUSED(u32 indent) = va_arg(*args, u32);
147 return (format(s, "%U",
148 format_mfib_entry, fei,
149 MFIB_ENTRY_FORMAT_BRIEF));
152 static inline mfib_path_ext_t *
153 mfib_entry_path_ext_get (index_t mi)
155 return (pool_elt_at_index(mfib_path_ext_pool, mi));
159 format_mfib_entry_path_ext (u8 * s, va_list * args)
161 mfib_path_ext_t *path_ext;
162 index_t mpi = va_arg(*args, index_t);
164 path_ext = mfib_entry_path_ext_get(mpi);
165 return (format(s, "path:%d flags:%U",
167 format_mfib_itf_flags, path_ext->mfpe_flags));
171 format_mfib_entry (u8 * s, va_list * args)
173 fib_node_index_t fei, mfi;
174 mfib_entry_t *mfib_entry;
175 mfib_entry_src_t *msrc;
179 fei = va_arg (*args, fib_node_index_t);
180 level = va_arg (*args, int);
181 mfib_entry = mfib_entry_get(fei);
183 s = format (s, "%U", format_mfib_prefix, &mfib_entry->mfe_prefix);
184 s = format (s, ": %U", format_mfib_entry_flags, mfib_entry->mfe_flags);
186 if (level >= MFIB_ENTRY_FORMAT_DETAIL)
188 fib_node_index_t path_index, mpi;
190 s = format (s, "\n");
191 s = format (s, " fib:%d", mfib_entry->mfe_fib_index);
192 s = format (s, " index:%d", mfib_entry_get_index(mfib_entry));
193 s = format (s, " locks:%d\n", mfib_entry->mfe_node.fn_locks);
194 vec_foreach(msrc, mfib_entry->mfe_srcs)
196 s = format (s, " src:%s", mfib_source_names[msrc->mfes_src]);
197 s = format (s, ": %U\n", format_mfib_entry_flags, msrc->mfes_flags);
198 if (FIB_NODE_INDEX_INVALID != msrc->mfes_pl)
200 s = fib_path_list_format(msrc->mfes_pl, s);
202 s = format (s, " Extensions:\n");
203 hash_foreach(path_index, mpi, msrc->mfes_exts,
205 s = format(s, " %U\n", format_mfib_entry_path_ext, mpi);
207 s = format (s, " Interface-Forwarding:\n");
208 hash_foreach(sw_if_index, mfi, msrc->mfes_itfs,
210 s = format(s, " %U\n", format_mfib_itf, mfi);
215 s = format(s, "\n Interfaces:");
216 hash_foreach(sw_if_index, mfi, mfib_entry->mfe_itfs,
218 s = format(s, "\n %U", format_mfib_itf, mfi);
220 s = format(s, "\n RPF-ID:%d", mfib_entry->mfe_rpf_id);
221 s = format(s, "\n %U-chain\n %U",
222 format_fib_forw_chain_type,
223 mfib_entry_get_default_chain_type(mfib_entry),
225 &mfib_entry->mfe_rep,
229 if (level >= MFIB_ENTRY_FORMAT_DETAIL2)
231 s = format(s, "\nchildren:");
232 s = fib_node_children_format(mfib_entry->mfe_node.fn_children, s);
239 mfib_entry_from_fib_node (fib_node_t *node)
242 ASSERT(FIB_NODE_TYPE_MFIB_ENTRY == node->fn_type);
244 return ((mfib_entry_t*)node);
248 mfib_entry_src_cmp_for_sort (void * v1,
251 mfib_entry_src_t *esrc1 = v1, *esrc2 = v2;
253 return (esrc1->mfes_src - esrc2->mfes_src);
257 mfib_entry_src_init (mfib_entry_t *mfib_entry,
258 mfib_source_t source)
261 mfib_entry_src_t esrc = {
262 .mfes_pl = FIB_NODE_INDEX_INVALID,
263 .mfes_flags = MFIB_ENTRY_FLAG_NONE,
267 vec_add1(mfib_entry->mfe_srcs, esrc);
268 vec_sort_with_function(mfib_entry->mfe_srcs,
269 mfib_entry_src_cmp_for_sort);
272 static mfib_entry_src_t *
273 mfib_entry_src_find (const mfib_entry_t *mfib_entry,
274 mfib_source_t source,
278 mfib_entry_src_t *esrc;
282 vec_foreach(esrc, mfib_entry->mfe_srcs)
284 if (esrc->mfes_src == source)
301 static mfib_entry_src_t *
302 mfib_entry_src_find_or_create (mfib_entry_t *mfib_entry,
303 mfib_source_t source)
305 mfib_entry_src_t *esrc;
307 esrc = mfib_entry_src_find(mfib_entry, source, NULL);
311 mfib_entry_src_init(mfib_entry, source);
314 return (mfib_entry_src_find(mfib_entry, source, NULL));
317 static mfib_entry_src_t*
318 mfib_entry_get_best_src (const mfib_entry_t *mfib_entry)
320 mfib_entry_src_t *bsrc;
323 * the enum of sources is deliberately arranged in priority order
325 if (0 == vec_len(mfib_entry->mfe_srcs))
331 bsrc = vec_elt_at_index(mfib_entry->mfe_srcs, 0);
338 mfib_entry_src_flush (mfib_entry_src_t *msrc)
343 hash_foreach(sw_if_index, mfii, msrc->mfes_itfs,
345 mfib_itf_delete(mfib_itf_get(mfii));
347 hash_free(msrc->mfes_itfs);
348 msrc->mfes_itfs = NULL;
349 fib_path_list_unlock(msrc->mfes_pl);
353 mfib_entry_src_remove (mfib_entry_t *mfib_entry,
354 mfib_source_t source)
357 mfib_entry_src_t *msrc;
360 msrc = mfib_entry_src_find(mfib_entry, source, &index);
364 mfib_entry_src_flush(msrc);
365 vec_del1(mfib_entry->mfe_srcs, index);
370 mfib_entry_last_lock_gone (fib_node_t *node)
372 mfib_entry_t *mfib_entry;
373 mfib_entry_src_t *msrc;
375 mfib_entry = mfib_entry_from_fib_node(node);
377 dpo_reset(&mfib_entry->mfe_rep);
379 MFIB_ENTRY_DBG(mfib_entry, "last-lock");
381 vec_foreach(msrc, mfib_entry->mfe_srcs)
383 mfib_entry_src_flush(msrc);
386 vec_free(mfib_entry->mfe_srcs);
388 fib_node_deinit(&mfib_entry->mfe_node);
389 pool_put(mfib_entry_pool, mfib_entry);
393 * mfib_entry_back_walk_notify
395 * A back walk has reach this entry.
397 static fib_node_back_walk_rc_t
398 mfib_entry_back_walk_notify (fib_node_t *node,
399 fib_node_back_walk_ctx_t *ctx)
401 // FIXME - re-evalute
403 return (FIB_NODE_BACK_WALK_CONTINUE);
407 mfib_entry_show_memory (void)
409 fib_show_memory_usage("multicast-Entry",
410 pool_elts(mfib_entry_pool),
411 pool_len(mfib_entry_pool),
412 sizeof(mfib_entry_t));
416 * The MFIB entry's graph node virtual function table
418 static const fib_node_vft_t mfib_entry_vft = {
419 .fnv_get = mfib_entry_get_node,
420 .fnv_last_lock = mfib_entry_last_lock_gone,
421 .fnv_back_walk = mfib_entry_back_walk_notify,
422 .fnv_mem_show = mfib_entry_show_memory,
426 mfib_entry_child_add (fib_node_index_t mfib_entry_index,
427 fib_node_type_t child_type,
428 fib_node_index_t child_index)
430 return (fib_node_child_add(FIB_NODE_TYPE_MFIB_ENTRY,
437 mfib_entry_child_remove (fib_node_index_t mfib_entry_index,
440 fib_node_child_remove(FIB_NODE_TYPE_MFIB_ENTRY,
445 static mfib_entry_t *
446 mfib_entry_alloc (u32 fib_index,
447 const mfib_prefix_t *prefix,
448 fib_node_index_t *mfib_entry_index)
450 mfib_entry_t *mfib_entry;
452 pool_get(mfib_entry_pool, mfib_entry);
454 fib_node_init(&mfib_entry->mfe_node,
455 FIB_NODE_TYPE_MFIB_ENTRY);
458 * Some of the members require non-default initialisation
459 * so we also init those that don't and thus save on the call to memset.
461 mfib_entry->mfe_flags = 0;
462 mfib_entry->mfe_fib_index = fib_index;
463 mfib_entry->mfe_prefix = *prefix;
464 mfib_entry->mfe_srcs = NULL;
465 mfib_entry->mfe_itfs = NULL;
466 mfib_entry->mfe_rpf_id = MFIB_RPF_ID_NONE;
468 dpo_reset(&mfib_entry->mfe_rep);
470 *mfib_entry_index = mfib_entry_get_index(mfib_entry);
472 MFIB_ENTRY_DBG(mfib_entry, "alloc");
477 static inline mfib_path_ext_t *
478 mfib_entry_path_ext_find (mfib_path_ext_t *exts,
479 fib_node_index_t path_index)
483 p = hash_get(exts, path_index);
487 return (mfib_entry_path_ext_get(p[0]));
493 static mfib_path_ext_t*
494 mfib_path_ext_add (mfib_entry_src_t *msrc,
495 fib_node_index_t path_index,
496 mfib_itf_flags_t mfi_flags)
498 mfib_path_ext_t *path_ext;
500 pool_get(mfib_path_ext_pool, path_ext);
502 path_ext->mfpe_flags = mfi_flags;
503 path_ext->mfpe_path = path_index;
505 hash_set(msrc->mfes_exts, path_index,
506 path_ext - mfib_path_ext_pool);
512 mfib_path_ext_remove (mfib_entry_src_t *msrc,
513 fib_node_index_t path_index)
515 mfib_path_ext_t *path_ext;
517 path_ext = mfib_entry_path_ext_find(msrc->mfes_exts, path_index);
519 hash_unset(msrc->mfes_exts, path_index);
520 pool_put(mfib_path_ext_pool, path_ext);
523 typedef struct mfib_entry_collect_forwarding_ctx_t_
525 load_balance_path_t * next_hops;
526 fib_forward_chain_type_t fct;
527 mfib_entry_src_t *msrc;
528 } mfib_entry_collect_forwarding_ctx_t;
531 mfib_entry_src_collect_forwarding (fib_node_index_t pl_index,
532 fib_node_index_t path_index,
535 mfib_entry_collect_forwarding_ctx_t *ctx;
536 load_balance_path_t *nh;
541 * if the path is not resolved, don't include it.
543 if (!fib_path_is_resolved(path_index))
549 * If the path is not forwarding to use it
551 mfib_path_ext_t *path_ext;
553 path_ext = mfib_entry_path_ext_find(ctx->msrc->mfes_exts,
556 if (NULL != path_ext &&
557 !(path_ext->mfpe_flags & MFIB_ITF_FLAG_FORWARD))
564 case FIB_FORW_CHAIN_TYPE_MCAST_IP4:
565 case FIB_FORW_CHAIN_TYPE_MCAST_IP6:
567 * EOS traffic with no label to stack, we need the IP Adj
569 vec_add2(ctx->next_hops, nh, 1);
571 nh->path_index = path_index;
572 nh->path_weight = fib_path_get_weight(path_index);
573 fib_path_contribute_forwarding(path_index, ctx->fct, &nh->path_dpo);
576 case FIB_FORW_CHAIN_TYPE_UNICAST_IP4:
577 case FIB_FORW_CHAIN_TYPE_UNICAST_IP6:
578 case FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS:
579 case FIB_FORW_CHAIN_TYPE_MPLS_EOS:
580 case FIB_FORW_CHAIN_TYPE_ETHERNET:
581 case FIB_FORW_CHAIN_TYPE_NSH:
590 mfib_entry_stack (mfib_entry_t *mfib_entry,
591 mfib_entry_src_t *msrc)
595 dp = fib_proto_to_dpo(mfib_entry_get_proto(mfib_entry));
598 FIB_NODE_INDEX_INVALID != msrc->mfes_pl)
600 mfib_entry_collect_forwarding_ctx_t ctx = {
602 .fct = mfib_entry_get_default_chain_type(mfib_entry),
606 fib_path_list_walk(msrc->mfes_pl,
607 mfib_entry_src_collect_forwarding,
610 if (!(MFIB_ENTRY_FLAG_EXCLUSIVE & mfib_entry->mfe_flags))
612 if (NULL == ctx.next_hops)
615 * no next-hops, stack directly on the drop
617 dpo_stack(DPO_MFIB_ENTRY, dp,
618 &mfib_entry->mfe_rep,
624 * each path contirbutes a next-hop. form a replicate
625 * from those choices.
627 if (!dpo_id_is_valid(&mfib_entry->mfe_rep) ||
628 dpo_is_drop(&mfib_entry->mfe_rep))
630 dpo_id_t tmp_dpo = DPO_INVALID;
634 replicate_create(0, dp));
636 dpo_stack(DPO_MFIB_ENTRY, dp,
637 &mfib_entry->mfe_rep,
642 replicate_multipath_update(&mfib_entry->mfe_rep,
649 * for exclusive routes the source provided a replicate DPO
650 * we we stashed inthe special path list with one path
651 * so we can stack directly on that.
653 ASSERT(1 == vec_len(ctx.next_hops));
655 dpo_stack(DPO_MFIB_ENTRY, dp,
656 &mfib_entry->mfe_rep,
657 &ctx.next_hops[0].path_dpo);
658 dpo_reset(&ctx.next_hops[0].path_dpo);
659 vec_free(ctx.next_hops);
664 dpo_stack(DPO_MFIB_ENTRY, dp,
665 &mfib_entry->mfe_rep,
670 static fib_node_index_t
671 mfib_entry_src_path_add (mfib_entry_src_t *msrc,
672 const fib_route_path_t *rpath)
674 fib_node_index_t path_index;
675 fib_route_path_t *rpaths;
677 ASSERT(!(MFIB_ENTRY_FLAG_EXCLUSIVE & msrc->mfes_flags));
680 * path-lists require a vector of paths
683 vec_add1(rpaths, rpath[0]);
685 if (FIB_NODE_INDEX_INVALID == msrc->mfes_pl)
687 /* A non-shared path-list */
688 msrc->mfes_pl = fib_path_list_create(FIB_PATH_LIST_FLAG_NO_URPF,
690 fib_path_list_lock(msrc->mfes_pl);
693 path_index = fib_path_list_path_add(msrc->mfes_pl, rpaths);
700 static fib_node_index_t
701 mfib_entry_src_path_remove (mfib_entry_src_t *msrc,
702 const fib_route_path_t *rpath)
704 fib_node_index_t path_index;
705 fib_route_path_t *rpaths;
707 ASSERT(!(MFIB_ENTRY_FLAG_EXCLUSIVE & msrc->mfes_flags));
710 * path-lists require a vector of paths
713 vec_add1(rpaths, rpath[0]);
715 path_index = fib_path_list_path_remove(msrc->mfes_pl, rpaths);
723 mfib_entry_recalculate_forwarding (mfib_entry_t *mfib_entry)
725 mfib_entry_src_t *bsrc;
728 * copy the forwarding data from the bast source
730 bsrc = mfib_entry_get_best_src(mfib_entry);
734 mfib_entry->mfe_flags = bsrc->mfes_flags;
735 mfib_entry->mfe_itfs = bsrc->mfes_itfs;
736 mfib_entry->mfe_rpf_id = bsrc->mfes_rpf_id;
739 mfib_entry_stack(mfib_entry, bsrc);
744 mfib_entry_create (u32 fib_index,
745 mfib_source_t source,
746 const mfib_prefix_t *prefix,
748 mfib_entry_flags_t entry_flags)
750 fib_node_index_t mfib_entry_index;
751 mfib_entry_t *mfib_entry;
752 mfib_entry_src_t *msrc;
754 mfib_entry = mfib_entry_alloc(fib_index, prefix,
756 msrc = mfib_entry_src_find_or_create(mfib_entry, source);
757 msrc->mfes_flags = entry_flags;
758 msrc->mfes_rpf_id = rpf_id;
760 mfib_entry_recalculate_forwarding(mfib_entry);
762 return (mfib_entry_index);
766 mfib_entry_ok_for_delete (mfib_entry_t *mfib_entry)
768 return (0 == vec_len(mfib_entry->mfe_srcs));
772 mfib_entry_src_ok_for_delete (const mfib_entry_src_t *msrc)
774 return ((MFIB_ENTRY_FLAG_NONE == msrc->mfes_flags &&
775 0 == fib_path_list_get_n_paths(msrc->mfes_pl)));
779 mfib_entry_update (fib_node_index_t mfib_entry_index,
780 mfib_source_t source,
781 mfib_entry_flags_t entry_flags,
785 mfib_entry_t *mfib_entry;
786 mfib_entry_src_t *msrc;
788 mfib_entry = mfib_entry_get(mfib_entry_index);
789 msrc = mfib_entry_src_find_or_create(mfib_entry, source);
790 msrc->mfes_flags = entry_flags;
791 msrc->mfes_rpf_id = rpf_id;
793 if (INDEX_INVALID != repi)
796 * The source is providing its own replicate DPO.
797 * Create a sepcial path-list to manage it, that way
798 * this entry and the source are equivalent to a normal
801 fib_node_index_t old_pl_index;
803 dpo_id_t dpo = DPO_INVALID;
805 fp = mfib_entry_get_proto(mfib_entry);
806 old_pl_index = msrc->mfes_pl;
808 dpo_set(&dpo, DPO_REPLICATE,
809 fib_proto_to_dpo(fp),
813 fib_path_list_create_special(fp,
814 FIB_PATH_LIST_FLAG_EXCLUSIVE,
818 fib_path_list_lock(msrc->mfes_pl);
819 fib_path_list_unlock(old_pl_index);
822 if (mfib_entry_src_ok_for_delete(msrc))
825 * this source has no interfaces and no flags.
826 * it has nothing left to give - remove it
828 mfib_entry_src_remove(mfib_entry, source);
831 mfib_entry_recalculate_forwarding(mfib_entry);
833 return (mfib_entry_ok_for_delete(mfib_entry));
837 mfib_entry_itf_add (mfib_entry_src_t *msrc,
841 hash_set(msrc->mfes_itfs, sw_if_index, mi);
845 mfib_entry_itf_remove (mfib_entry_src_t *msrc,
850 mfi = mfib_entry_itf_find(msrc->mfes_itfs, sw_if_index);
852 mfib_itf_delete(mfi);
854 hash_unset(msrc->mfes_itfs, sw_if_index);
858 mfib_entry_path_update (fib_node_index_t mfib_entry_index,
859 mfib_source_t source,
860 const fib_route_path_t *rpath,
861 mfib_itf_flags_t itf_flags)
863 fib_node_index_t path_index;
864 mfib_path_ext_t *path_ext;
865 mfib_itf_flags_t old, new;
866 mfib_entry_t *mfib_entry;
867 mfib_entry_src_t *msrc;
869 mfib_entry = mfib_entry_get(mfib_entry_index);
870 ASSERT(NULL != mfib_entry);
871 msrc = mfib_entry_src_find_or_create(mfib_entry, source);
874 * add the path to the path-list. If it's a duplicate we'll get
875 * back the original path.
877 path_index = mfib_entry_src_path_add(msrc, rpath);
880 * find the path extension for that path
882 path_ext = mfib_entry_path_ext_find(msrc->mfes_exts, path_index);
884 if (NULL == path_ext)
886 old = MFIB_ITF_FLAG_NONE;
887 path_ext = mfib_path_ext_add(msrc, path_index, itf_flags);
891 old = path_ext->mfpe_flags;
892 path_ext->mfpe_flags = itf_flags;
896 * Has the path changed its contribution to the input interface set.
897 * Which only paths with interfaces can do...
899 if (~0 != rpath[0].frp_sw_if_index)
901 mfib_itf_t *mfib_itf;
907 if (MFIB_ITF_FLAG_NONE == new)
910 * no more interface flags on this path, remove
911 * from the data-plane set
913 mfib_entry_itf_remove(msrc, rpath[0].frp_sw_if_index);
915 else if (MFIB_ITF_FLAG_NONE == old)
918 * This interface is now contributing
920 mfib_entry_itf_add(msrc,
921 rpath[0].frp_sw_if_index,
922 mfib_itf_create(rpath[0].frp_sw_if_index,
928 * change of flag contributions
930 mfib_itf = mfib_entry_itf_find(msrc->mfes_itfs,
931 rpath[0].frp_sw_if_index);
932 /* Seen by packets inflight */
933 mfib_itf->mfi_flags = new;
938 mfib_entry_recalculate_forwarding(mfib_entry);
942 * mfib_entry_path_remove
944 * remove a path from the entry.
945 * return the mfib_entry's index if it is still present, INVALID otherwise.
948 mfib_entry_path_remove (fib_node_index_t mfib_entry_index,
949 mfib_source_t source,
950 const fib_route_path_t *rpath)
952 fib_node_index_t path_index;
953 mfib_entry_t *mfib_entry;
954 mfib_entry_src_t *msrc;
956 mfib_entry = mfib_entry_get(mfib_entry_index);
957 ASSERT(NULL != mfib_entry);
958 msrc = mfib_entry_src_find(mfib_entry, source, NULL);
963 * there are no paths left for this source
965 return (mfib_entry_ok_for_delete(mfib_entry));
969 * remove the path from the path-list. If it's not there we'll get
972 path_index = mfib_entry_src_path_remove(msrc, rpath);
974 if (FIB_NODE_INDEX_INVALID != path_index)
977 * don't need the extension, nor the interface anymore
979 mfib_path_ext_remove(msrc, path_index);
980 if (~0 != rpath[0].frp_sw_if_index)
982 mfib_entry_itf_remove(msrc, rpath[0].frp_sw_if_index);
986 if (mfib_entry_src_ok_for_delete(msrc))
989 * this source has no interfaces and no flags.
990 * it has nothing left to give - remove it
992 mfib_entry_src_remove(mfib_entry, source);
995 mfib_entry_recalculate_forwarding(mfib_entry);
997 return (mfib_entry_ok_for_delete(mfib_entry));
1003 * The source is withdrawing all the paths it provided
1006 mfib_entry_delete (fib_node_index_t mfib_entry_index,
1007 mfib_source_t source)
1009 mfib_entry_t *mfib_entry;
1011 mfib_entry = mfib_entry_get(mfib_entry_index);
1012 mfib_entry_src_remove(mfib_entry, source);
1014 mfib_entry_recalculate_forwarding(mfib_entry);
1016 return (mfib_entry_ok_for_delete(mfib_entry));
1020 fib_ip4_address_compare (ip4_address_t * a1,
1024 * IP addresses are unsiged ints. the return value here needs to be signed
1025 * a simple subtraction won't cut it.
1026 * If the addresses are the same, the sort order is undefiend, so phoey.
1028 return ((clib_net_to_host_u32(a1->data_u32) >
1029 clib_net_to_host_u32(a2->data_u32) ) ?
1034 fib_ip6_address_compare (ip6_address_t * a1,
1038 for (i = 0; i < ARRAY_LEN (a1->as_u16); i++)
1040 int cmp = (clib_net_to_host_u16 (a1->as_u16[i]) -
1041 clib_net_to_host_u16 (a2->as_u16[i]));
1049 mfib_entry_cmp (fib_node_index_t mfib_entry_index1,
1050 fib_node_index_t mfib_entry_index2)
1052 mfib_entry_t *mfib_entry1, *mfib_entry2;
1055 mfib_entry1 = mfib_entry_get(mfib_entry_index1);
1056 mfib_entry2 = mfib_entry_get(mfib_entry_index2);
1058 switch (mfib_entry1->mfe_prefix.fp_proto)
1060 case FIB_PROTOCOL_IP4:
1061 cmp = fib_ip4_address_compare(&mfib_entry1->mfe_prefix.fp_grp_addr.ip4,
1062 &mfib_entry2->mfe_prefix.fp_grp_addr.ip4);
1066 cmp = fib_ip4_address_compare(&mfib_entry1->mfe_prefix.fp_src_addr.ip4,
1067 &mfib_entry2->mfe_prefix.fp_src_addr.ip4);
1070 case FIB_PROTOCOL_IP6:
1071 cmp = fib_ip6_address_compare(&mfib_entry1->mfe_prefix.fp_grp_addr.ip6,
1072 &mfib_entry2->mfe_prefix.fp_grp_addr.ip6);
1076 cmp = fib_ip6_address_compare(&mfib_entry1->mfe_prefix.fp_src_addr.ip6,
1077 &mfib_entry2->mfe_prefix.fp_src_addr.ip6);
1080 case FIB_PROTOCOL_MPLS:
1087 cmp = (mfib_entry1->mfe_prefix.fp_len - mfib_entry2->mfe_prefix.fp_len);
1093 mfib_entry_cmp_for_sort (void *i1, void *i2)
1095 fib_node_index_t *mfib_entry_index1 = i1, *mfib_entry_index2 = i2;
1097 return (mfib_entry_cmp(*mfib_entry_index1,
1098 *mfib_entry_index2));
1102 mfib_entry_lock (fib_node_index_t mfib_entry_index)
1104 mfib_entry_t *mfib_entry;
1106 mfib_entry = mfib_entry_get(mfib_entry_index);
1108 fib_node_lock(&mfib_entry->mfe_node);
1112 mfib_entry_unlock (fib_node_index_t mfib_entry_index)
1114 mfib_entry_t *mfib_entry;
1116 mfib_entry = mfib_entry_get(mfib_entry_index);
1118 fib_node_unlock(&mfib_entry->mfe_node);
1122 mfib_entry_dpo_lock (dpo_id_t *dpo)
1126 mfib_entry_dpo_unlock (dpo_id_t *dpo)
1130 const static dpo_vft_t mfib_entry_dpo_vft = {
1131 .dv_lock = mfib_entry_dpo_lock,
1132 .dv_unlock = mfib_entry_dpo_unlock,
1133 .dv_format = format_mfib_entry_dpo,
1134 .dv_mem_show = mfib_entry_show_memory,
1137 const static char* const mfib_entry_ip4_nodes[] =
1139 "ip4-mfib-forward-rpf",
1142 const static char* const mfib_entry_ip6_nodes[] =
1144 "ip6-mfib-forward-rpf",
1148 const static char* const * const mfib_entry_nodes[DPO_PROTO_NUM] =
1150 [DPO_PROTO_IP4] = mfib_entry_ip4_nodes,
1151 [DPO_PROTO_IP6] = mfib_entry_ip6_nodes,
1155 mfib_entry_module_init (void)
1157 fib_node_register_type (FIB_NODE_TYPE_MFIB_ENTRY, &mfib_entry_vft);
1158 dpo_register(DPO_MFIB_ENTRY, &mfib_entry_dpo_vft, mfib_entry_nodes);
1162 mfib_entry_encode (fib_node_index_t mfib_entry_index,
1163 fib_route_path_encode_t **api_rpaths)
1165 mfib_entry_t *mfib_entry;
1166 mfib_entry_src_t *bsrc;
1168 mfib_entry = mfib_entry_get(mfib_entry_index);
1169 bsrc = mfib_entry_get_best_src(mfib_entry);
1171 if (FIB_NODE_INDEX_INVALID != bsrc->mfes_pl)
1173 fib_path_list_walk(bsrc->mfes_pl,
1181 mfib_entry_get_prefix (fib_node_index_t mfib_entry_index,
1184 mfib_entry_t *mfib_entry;
1186 mfib_entry = mfib_entry_get(mfib_entry_index);
1187 *pfx = mfib_entry->mfe_prefix;
1191 mfib_entry_get_fib_index (fib_node_index_t mfib_entry_index)
1193 mfib_entry_t *mfib_entry;
1195 mfib_entry = mfib_entry_get(mfib_entry_index);
1197 return (mfib_entry->mfe_fib_index);
1201 mfib_entry_contribute_forwarding (fib_node_index_t mfib_entry_index,
1202 fib_forward_chain_type_t type,
1206 * An IP mFIB entry can only provide a forwarding chain that
1207 * is the same IP proto as the prefix.
1208 * No use-cases (i know of) for other combinations.
1210 mfib_entry_t *mfib_entry;
1213 mfib_entry = mfib_entry_get(mfib_entry_index);
1215 dp = fib_proto_to_dpo(mfib_entry->mfe_prefix.fp_proto);
1217 if (type == fib_forw_chain_type_from_dpo_proto(dp))
1219 dpo_copy(dpo, &mfib_entry->mfe_rep);
1223 dpo_copy(dpo, drop_dpo_get(dp));
1228 mfib_entry_pool_size (void)
1230 return (pool_elts(mfib_entry_pool));
1233 static clib_error_t *
1234 show_mfib_entry_command (vlib_main_t * vm,
1235 unformat_input_t * input,
1236 vlib_cli_command_t * cmd)
1238 fib_node_index_t fei;
1240 if (unformat (input, "%d", &fei))
1243 * show one in detail
1245 if (!pool_is_free_index(mfib_entry_pool, fei))
1247 vlib_cli_output (vm, "%d@%U",
1249 format_mfib_entry, fei,
1250 MFIB_ENTRY_FORMAT_DETAIL2);
1254 vlib_cli_output (vm, "entry %d invalid", fei);
1262 vlib_cli_output (vm, "FIB Entries:");
1263 pool_foreach_index(fei, mfib_entry_pool,
1265 vlib_cli_output (vm, "%d@%U",
1267 format_mfib_entry, fei,
1268 MFIB_ENTRY_FORMAT_BRIEF);
1276 * This commnad displays an entry, or all entries, in the mfib tables indexed by their unique
1277 * numerical indentifier.
1279 VLIB_CLI_COMMAND (show_mfib_entry, static) = {
1280 .path = "show mfib entry",
1281 .function = show_mfib_entry_command,
1282 .short_help = "show mfib entry",