/* * Copyright (c) 2016 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/fib/fib_entry.h> #include <vnet/fib/fib_entry_src.h> #include <vnet/fib/fib_path_list.h> #include <vnet/fib/fib_path_ext.h> /** * Source initialisation Function */ static void fib_entry_src_api_init (fib_entry_src_t *src) { } /** * Source deinitialisation Function */ static void fib_entry_src_api_deinit (fib_entry_src_t *src) { } static void fib_entry_src_api_path_swap (fib_entry_src_t *src, const fib_entry_t *entry, fib_path_list_flags_t pl_flags, const fib_route_path_t *rpaths) { const fib_route_path_t *rpath; fib_path_ext_list_flush(&src->fes_path_exts); src->fes_pl = fib_path_list_create((FIB_PATH_LIST_FLAG_SHARED | pl_flags), rpaths); vec_foreach(rpath, rpaths) { if (NULL != rpath->frp_label_stack) { fib_path_ext_list_push_back(&src->fes_path_exts, src->fes_pl, FIB_PATH_EXT_MPLS, rpath); } } } static void fib_entry_src_api_path_add (fib_entry_src_t *src, const fib_entry_t *entry, fib_path_list_flags_t pl_flags, const fib_route_path_t *rpaths) { const fib_route_path_t *rpath; if (FIB_NODE_INDEX_INVALID == src->fes_pl) { src->fes_pl = fib_path_list_create((FIB_PATH_LIST_FLAG_SHARED | pl_flags), rpaths); } else { src->fes_pl = fib_path_list_copy_and_path_add(src->fes_pl, (FIB_PATH_LIST_FLAG_SHARED | pl_flags), rpaths); } /* * re-resolve all the path-extensions with the new path-list */ fib_path_ext_list_resolve(&src->fes_path_exts, src->fes_pl); /* * if the path has a label we need to add a path extension */ vec_foreach(rpath, rpaths) { if (NULL != rpath->frp_label_stack) { fib_path_ext_list_insert(&src->fes_path_exts, src->fes_pl, FIB_PATH_EXT_MPLS, rpath); } } } static void fib_entry_src_api_path_remove (fib_entry_src_t *src, fib_path_list_flags_t pl_flags, const fib_route_path_t *rpaths) { const fib_route_path_t *rpath; if (FIB_NODE_INDEX_INVALID != src->fes_pl) { src->fes_pl = fib_path_list_copy_and_path_remove(src->fes_pl, (FIB_PATH_LIST_FLAG_SHARED | pl_flags), rpaths); /* * remove the path-extension for the path */ vec_foreach(rpath, rpaths) { fib_path_ext_list_remove(&src->fes_path_exts, FIB_PATH_EXT_MPLS, rpath); }; /* * resolve the remaining extensions */ fib_path_ext_list_resolve(&src->fes_path_exts, src->fes_pl); } } static void fib_entry_src_api_add (fib_entry_src_t *src, const fib_entry_t *entry, fib_entry_flag_t flags, dpo_proto_t proto, const dpo_id_t *dpo) { if (FIB_ENTRY_FLAG_NONE != flags) { src->fes_pl = fib_path_list_create_special( proto, fib_entry_src_flags_2_path_list_flags(flags), dpo); } } static void fib_entry_src_api_remove (fib_entry_src_t *src) { src->fes_pl = FIB_NODE_INDEX_INVALID; } const static fib_entry_src_vft_t api_src_vft = { .fesv_init = fib_entry_src_api_init, .fesv_deinit = fib_entry_src_api_deinit, .fesv_add = fib_entry_src_api_add, .fesv_remove = fib_entry_src_api_remove, .fesv_path_add = fib_entry_src_api_path_add, .fesv_path_swap = fib_entry_src_api_path_swap, .fesv_path_remove = fib_entry_src_api_path_remove, }; void fib_entry_src_api_register (void) { fib_entry_src_behaviour_register(FIB_SOURCE_BH_API, &api_src_vft); }