/* * Copyright (c) 2018 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vnet/mfib/mfib_entry_src.h> #include <vnet/mfib/mfib_entry_cover.h> #include <vnet/mfib/mfib_table.h> #include <vnet/fib/fib_path_list.h> static void mfib_entry_src_rr_deactiviate (mfib_entry_t *mfib_entry, mfib_entry_src_t *msrc) { mfib_entry_t *cover; /* * remove the depednecy on the covering entry */ if (FIB_NODE_INDEX_INVALID != msrc->mfes_cover) { cover = mfib_entry_get(msrc->mfes_cover); mfib_entry_cover_untrack(cover, msrc->mfes_sibling); msrc->mfes_cover = FIB_NODE_INDEX_INVALID; } fib_path_list_unlock(msrc->mfes_pl); msrc->mfes_pl = FIB_NODE_INDEX_INVALID; msrc->mfes_itfs = NULL; msrc->mfes_exts = NULL; } static void mfib_entry_src_rr_activiate (mfib_entry_t *mfib_entry, mfib_entry_src_t *msrc) { mfib_entry_src_t *csrc; mfib_entry_t *cover; msrc->mfes_cover = mfib_table_get_less_specific(mfib_entry->mfe_fib_index, &mfib_entry->mfe_prefix); ASSERT(FIB_NODE_INDEX_INVALID != msrc->mfes_cover); cover = mfib_entry_get(msrc->mfes_cover); msrc->mfes_sibling = mfib_entry_cover_track(cover, mfib_entry_get_index(mfib_entry)); csrc = mfib_entry_get_best_src(cover); msrc->mfes_pl = csrc->mfes_pl; fib_path_list_lock(msrc->mfes_pl); msrc->mfes_flags = csrc->mfes_flags; msrc->mfes_itfs = csrc->mfes_itfs; msrc->mfes_exts = csrc->mfes_exts; msrc->mfes_rpf_id = csrc->mfes_rpf_id; } static mfib_src_res_t mfib_entry_src_rr_cover_change (mfib_entry_t *mfib_entry, mfib_entry_src_t *msrc) { mfib_entry_src_rr_deactiviate(mfib_entry, msrc); mfib_entry_src_rr_activiate(mfib_entry, msrc); return (MFIB_SRC_REEVALUATE); } static mfib_src_res_t mfib_entry_src_rr_cover_update (mfib_entry_t *mfib_entry, mfib_entry_src_t *msrc) { /* * path lists are updated (i.e. not shared) in the mfib world, * so there's no need to check for a new one. but we do need to * copy down any new flags and input interfaces */ mfib_entry_t *cover; cover = mfib_entry_get(msrc->mfes_cover); msrc->mfes_flags = cover->mfe_flags; msrc->mfes_itfs = cover->mfe_itfs; msrc->mfes_rpf_id = cover->mfe_rpf_id; return (MFIB_SRC_REEVALUATE); } void mfib_entry_src_rr_module_init (void) { mfib_entry_src_vft mvft = { .mev_activate = mfib_entry_src_rr_activiate, .mev_deactivate = mfib_entry_src_rr_deactiviate, .mev_cover_change = mfib_entry_src_rr_cover_change, .mev_cover_update = mfib_entry_src_rr_cover_update, }; mfib_entry_src_register(MFIB_SOURCE_RR, &mvft); }