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/*
* teib.h: next-hop resolution
*
* 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 __TEIB_H__
#define __TEIB_H__
#include <vnet/ip/ip.h>
/**
* Tunnel Endpoint Information Base.
*
* A TEIB entry represents the mapping between a peer on an interface in the overlay
* and a next-hop address in the underlay.
* i.e. there's a multipoint tunnel providing the overlay (henace a peer on
* that tunnel) which is reachable via 'tunnel destination' address in the
* underlay.
*
* Such overlay to underlay mappings might be providied by a protocol like NHRP
*/
typedef struct teib_entry_t_ teib_entry_t;
/** accessors for the opaque struct */
extern u32 teib_entry_get_sw_if_index (const teib_entry_t * ne);
extern u32 teib_entry_get_fib_index (const teib_entry_t * ne);
extern const ip46_address_t *teib_entry_get_peer (const teib_entry_t * ne);
extern const fib_prefix_t *teib_entry_get_nh (const teib_entry_t * ne);
extern u8 *format_teib_entry (u8 * s, va_list * args);
/**
* Create a new TEIB entry
*/
extern int teib_entry_add (u32 sw_if_index,
const ip46_address_t * peer,
u32 nh_table_id, const ip46_address_t * nh);
extern int teib_entry_del (u32 sw_if_index, const ip46_address_t * peer);
extern teib_entry_t *teib_entry_find (u32 sw_if_index,
const ip46_address_t * peer);
extern teib_entry_t *teib_entry_get (index_t nei);
extern void teib_entry_adj_stack (const teib_entry_t * ne, adj_index_t ai);
typedef walk_rc_t (*teib_walk_cb_t) (index_t nei, void *ctx);
extern void teib_walk (teib_walk_cb_t fn, void *ctx);
extern void teib_walk_itf (u32 sw_if_index, teib_walk_cb_t fn, void *ctx);
/**
* Notifications for the creation and deletion of TEIB entries
*/
typedef void (*teib_entry_added_t) (const teib_entry_t * ne);
typedef void (*teib_entry_deleted_t) (const teib_entry_t * ne);
typedef struct teib_vft_t_
{
teib_entry_added_t nv_added;
teib_entry_deleted_t nv_deleted;
} teib_vft_t;
extern void teib_register (const teib_vft_t * vft);
#endif
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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