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/*
* 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);
}
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