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
|
/* $OpenBSD: bfd.h,v 1.1 2016/09/03 14:14:20 phessler Exp $ */
/*
* Copyright (c) 2016 Peter Hessler <phessler@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Support for Bi-directional Forwarding Detection (RFC 5880 / 5881)
*/
#ifndef _NET_BFD_H_
#define _NET_BFD_H_
/* Public Interface */
struct bfd_msghdr {
u_short rtm_msglen; /* to skip over non-understood messages */
u_char rtm_version; /* future binary compatibility */
u_char rtm_type; /* message type */
u_short rtm_hdrlen; /* sizeof(rt_msghdr) to skip over the header */
u_int16_t mode; /* */
u_int32_t minimum; /* minimum time (us) to send */
u_int32_t rx; /* minimum window (us) to receive */
u_int16_t multiplier; /* Retry backoff multiplier */
};
struct bfd_softc {
TAILQ_ENTRY(bfd_softc) bfd_next;
struct socket *sc_so;
struct socket *sc_soecho;
struct socket *sc_sosend;
struct rtentry *sc_rt;
struct bfd_state *sc_peer;
struct task sc_bfd_task;
struct task sc_bfd_send_task;
struct timeout sc_timo_rx;
struct timeout sc_timo_tx;
int state;
int mode;
int error;
int minrx;
int mintx;
int multiplier;
};
struct bfd_flags {
int version;
};
int bfd_rtalloc(struct rtentry *, struct bfd_flags *);
int bfd_rtfree(struct rtentry *);
void bfdinit(void);
void bfddestroy(void);
#endif /* _NET_BFD_H_ */
|
