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// SPDX-License-Identifier: GPL-2.0-or-later
/*********************************************************************
* Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
*
* 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);
event_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);
event_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);
event_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);
event_add_timer_tv(master, bfd_echo_xmt_cb, bs, &tv,
&bs->echo_xmttimer_ev);
}
void bfd_recvtimer_delete(struct bfd_session *bs)
{
EVENT_OFF(bs->recvtimer_ev);
}
void bfd_echo_recvtimer_delete(struct bfd_session *bs)
{
EVENT_OFF(bs->echo_recvtimer_ev);
}
void bfd_xmttimer_delete(struct bfd_session *bs)
{
EVENT_OFF(bs->xmttimer_ev);
}
void bfd_echo_xmttimer_delete(struct bfd_session *bs)
{
EVENT_OFF(bs->echo_xmttimer_ev);
}
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