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
|
/*********************************************************************
* 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 (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
bs->sock == -1)
return;
tv_normalize(&tv);
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 (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
bs->sock == -1)
return;
tv_normalize(&tv);
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 (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
bs->sock == -1)
return;
tv_normalize(&tv);
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 (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
bs->sock == -1)
return;
tv_normalize(&tv);
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);
}
|
