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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.
*/
#ifndef __FIB_ENTRY_SRC_RR_H__
#define __FIB_ENTRY_SRC_RR_H__
#include "fib_entry_src.h"
/*
* the flags that an RR sourced entry can inherit from its cover
*/
#define FIB_ENTRY_FLAGS_RR_INHERITED (FIB_ENTRY_FLAG_CONNECTED | \
FIB_ENTRY_FLAG_ATTACHED)
/*
* fib_entry_src_rr_resolve_via_connected
*
* Resolve via a connected cover.
*/
void
fib_entry_src_rr_resolve_via_connected (fib_entry_src_t *src,
const fib_entry_t *fib_entry,
const fib_entry_t *cover);
/*
* use the path-list of the cover, unless it would form a loop.
* that is unless the cover is via this entry.
* If a loop were to form it would be a 1 level loop (i.e. X via X),
* and there would be 2 locks on the path-list; one since its used
* by the cover, and 1 from here. The first lock will go when the
* cover is removed, the second, and last, when the covered walk
* occurs during the cover's removel - this is not a place where
* we can handle last lock gone.
* In short, don't let the loop form. The usual rules of 'we must
* let it form so we know when it breaks' don't apply here, since
* the loop will break when the cover changes, and this function
* will be called again when that happens.
*/
void
fib_entry_src_rr_use_covers_pl (fib_entry_src_t *src,
const fib_entry_t *fib_entry,
const fib_entry_t *cover);
/*
* fib_entry_src_rr_cover_update
*
* This entry's cover has changed. This entry
* will need to re-inheret.
*/
fib_entry_src_cover_res_t
fib_entry_src_rr_cover_change (fib_entry_src_t *src,
const fib_entry_t *fib_entry);
/*
* fib_entry_src_rr_cover_update
*
* This entry's cover has updated its forwarding info. This entry
* will need to re-inheret.
*/
fib_entry_src_cover_res_t
fib_entry_src_rr_cover_update (fib_entry_src_t *src,
const fib_entry_t *fib_entry);
#endif
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