2 * Copyright (c) 2018 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.
17 #include <vnet/mfib/mfib_entry_src.h>
18 #include <vnet/mfib/mfib_entry_cover.h>
19 #include <vnet/mfib/mfib_table.h>
20 #include <vnet/fib/fib_path_list.h>
23 mfib_entry_src_rr_deactivate (mfib_entry_t *mfib_entry,
24 mfib_entry_src_t *msrc)
29 * remove the depednecy on the covering entry
31 if (FIB_NODE_INDEX_INVALID != msrc->mfes_cover)
33 cover = mfib_entry_get(msrc->mfes_cover);
34 mfib_entry_cover_untrack(cover, msrc->mfes_sibling);
35 msrc->mfes_cover = FIB_NODE_INDEX_INVALID;
38 fib_path_list_unlock(msrc->mfes_pl);
39 msrc->mfes_pl = FIB_NODE_INDEX_INVALID;
40 msrc->mfes_itfs = NULL;
41 msrc->mfes_exts = NULL;
45 mfib_entry_src_rr_activate (mfib_entry_t *mfib_entry,
46 mfib_entry_src_t *msrc)
48 mfib_entry_src_t *csrc;
51 msrc->mfes_cover = mfib_table_get_less_specific(mfib_entry->mfe_fib_index,
52 &mfib_entry->mfe_prefix);
54 ASSERT(FIB_NODE_INDEX_INVALID != msrc->mfes_cover);
56 cover = mfib_entry_get(msrc->mfes_cover);
59 mfib_entry_cover_track(cover, mfib_entry_get_index(mfib_entry));
61 csrc = mfib_entry_get_best_src(cover);
63 msrc->mfes_pl = csrc->mfes_pl;
64 fib_path_list_lock(msrc->mfes_pl);
65 msrc->mfes_route_flags = csrc->mfes_route_flags;
66 msrc->mfes_itfs = csrc->mfes_itfs;
67 msrc->mfes_exts = csrc->mfes_exts;
68 msrc->mfes_rpf_id = csrc->mfes_rpf_id;
72 mfib_entry_src_rr_cover_change (mfib_entry_t *mfib_entry,
73 mfib_entry_src_t *msrc)
75 mfib_entry_src_rr_deactivate(mfib_entry, msrc);
76 mfib_entry_src_rr_activate(mfib_entry, msrc);
78 return (MFIB_SRC_REEVALUATE);
82 mfib_entry_src_rr_cover_update (mfib_entry_t *mfib_entry,
83 mfib_entry_src_t *msrc)
86 * path lists are updated (i.e. not shared) in the mfib world,
87 * so there's no need to check for a new one. but we do need to
88 * copy down any new flags and input interfaces
90 mfib_entry_src_t *csrc;
93 cover = mfib_entry_get(msrc->mfes_cover);
95 msrc->mfes_route_flags = cover->mfe_flags;
96 msrc->mfes_itfs = cover->mfe_itfs;
97 msrc->mfes_rpf_id = cover->mfe_rpf_id;
99 /* The update to the cover could have removed the extensions.
100 * When a cover is removed from the table, the covereds see it first
101 * updated (to have no forwarding) and then changed
103 csrc = mfib_entry_get_best_src(cover);
104 msrc->mfes_exts = (csrc ? csrc->mfes_exts : NULL);
106 return (MFIB_SRC_REEVALUATE);
110 mfib_entry_src_rr_module_init (void)
112 mfib_entry_src_vft mvft = {
113 .mev_activate = mfib_entry_src_rr_activate,
114 .mev_deactivate = mfib_entry_src_rr_deactivate,
115 .mev_cover_change = mfib_entry_src_rr_cover_change,
116 .mev_cover_update = mfib_entry_src_rr_cover_update,
119 mfib_entry_src_register(MFIB_SOURCE_RR, &mvft);