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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*********************************************************************
* Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* event.c: implements the BFD loop event handlers.
*
* Authors
* -------
* Rafael Zalamena <rzalamena@opensourcerouting.org>
*/
#include <zebra.h>
#include "bfd.h"
void tv_normalize(struct timeval *tv);
void tv_normalize(struct timeval *tv)
{
/* Remove seconds part from microseconds. */
tv->tv_sec = tv->tv_usec / 1000000;
tv->tv_usec = tv->tv_usec % 1000000;
}
void bfd_recvtimer_update(struct bfd_session *bs)
{
struct timeval tv = {.tv_sec = 0, .tv_usec = bs->detect_TO};
/* Remove previous schedule if any. */
bfd_recvtimer_delete(bs);
/* Don't add event if peer is deactivated. */
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
bs->sock == -1)
return;
tv_normalize(&tv);
#ifdef BFD_EVENT_DEBUG
log_debug("%s: sec = %ld, usec = %ld", __func__, tv.tv_sec, tv.tv_usec);
#endif /* BFD_EVENT_DEBUG */
thread_add_timer_tv(master, bfd_recvtimer_cb, bs, &tv,
&bs->recvtimer_ev);
}
void bfd_echo_recvtimer_update(struct bfd_session *bs)
{
struct timeval tv = {.tv_sec = 0, .tv_usec = bs->echo_detect_TO};
/* Remove previous schedule if any. */
bfd_echo_recvtimer_delete(bs);
/* Don't add event if peer is deactivated. */
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
bs->sock == -1)
return;
tv_normalize(&tv);
#ifdef BFD_EVENT_DEBUG
log_debug("%s: sec = %ld, usec = %ld", __func__, tv.tv_sec, tv.tv_usec);
#endif /* BFD_EVENT_DEBUG */
thread_add_timer_tv(master, bfd_echo_recvtimer_cb, bs, &tv,
&bs->echo_recvtimer_ev);
}
void bfd_xmttimer_update(struct bfd_session *bs, uint64_t jitter)
{
struct timeval tv = {.tv_sec = 0, .tv_usec = jitter};
/* Remove previous schedule if any. */
bfd_xmttimer_delete(bs);
/* Don't add event if peer is deactivated. */
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
bs->sock == -1)
return;
tv_normalize(&tv);
#ifdef BFD_EVENT_DEBUG
log_debug("%s: sec = %ld, usec = %ld", __func__, tv.tv_sec, tv.tv_usec);
#endif /* BFD_EVENT_DEBUG */
thread_add_timer_tv(master, bfd_xmt_cb, bs, &tv, &bs->xmttimer_ev);
}
void bfd_echo_xmttimer_update(struct bfd_session *bs, uint64_t jitter)
{
struct timeval tv = {.tv_sec = 0, .tv_usec = jitter};
/* Remove previous schedule if any. */
bfd_echo_xmttimer_delete(bs);
/* Don't add event if peer is deactivated. */
if (BFD_CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
bs->sock == -1)
return;
tv_normalize(&tv);
#ifdef BFD_EVENT_DEBUG
log_debug("%s: sec = %ld, usec = %ld", __func__, tv.tv_sec, tv.tv_usec);
#endif /* BFD_EVENT_DEBUG */
thread_add_timer_tv(master, bfd_echo_xmt_cb, bs, &tv,
&bs->echo_xmttimer_ev);
}
void bfd_recvtimer_delete(struct bfd_session *bs)
{
THREAD_OFF(bs->recvtimer_ev);
}
void bfd_echo_recvtimer_delete(struct bfd_session *bs)
{
THREAD_OFF(bs->echo_recvtimer_ev);
}
void bfd_xmttimer_delete(struct bfd_session *bs)
{
THREAD_OFF(bs->xmttimer_ev);
}
void bfd_echo_xmttimer_delete(struct bfd_session *bs)
{
THREAD_OFF(bs->echo_xmttimer_ev);
}
|
