1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/*
* nhrp.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 __NHRP_H__
#define __NHRP_H__
#include <vnet/ip/ip.h>
/**
* An NHRP 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.
*/
typedef struct nhrp_entry_t_ nhrp_entry_t;
/** accessors for the opaque struct */
extern u32 nhrp_entry_get_sw_if_index (const nhrp_entry_t * ne);
extern u32 nhrp_entry_get_fib_index (const nhrp_entry_t * ne);
extern const ip46_address_t *nhrp_entry_get_peer (const nhrp_entry_t * ne);
extern const fib_prefix_t *nhrp_entry_get_nh (const nhrp_entry_t * ne);
extern u8 *format_nhrp_entry (u8 * s, va_list * args);
/**
* Create a new NHRP entry
*/
extern int nhrp_entry_add (u32 sw_if_index,
const ip46_address_t * peer,
u32 nh_table_id, const ip46_address_t * nh);
extern int nhrp_entry_del (u32 sw_if_index, const ip46_address_t * peer);
extern nhrp_entry_t *nhrp_entry_find (u32 sw_if_index,
const ip46_address_t * peer);
extern nhrp_entry_t *nhrp_entry_get (index_t nei);
extern void nhrp_entry_adj_stack (const nhrp_entry_t * ne, adj_index_t ai);
typedef walk_rc_t (*nhrp_walk_cb_t) (index_t nei, void *ctx);
extern void nhrp_walk (nhrp_walk_cb_t fn, void *ctx);
extern void nhrp_walk_itf (u32 sw_if_index, nhrp_walk_cb_t fn, void *ctx);
/**
* Notifications for the creation and deletion of NHRP entries
*/
typedef void (*nhrp_entry_added_t) (const nhrp_entry_t * ne);
typedef void (*nhrp_entry_deleted_t) (const nhrp_entry_t * ne);
typedef struct nhrp_vft_t_
{
nhrp_entry_added_t nv_added;
nhrp_entry_deleted_t nv_deleted;
} nhrp_vft_t;
extern void nhrp_register (const nhrp_vft_t * vft);
#endif
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
