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diff --git a/libknet/threads_heartbeat.c b/libknet/threads_heartbeat.c
index fef56a8a..d963c6fa 100644
--- a/libknet/threads_heartbeat.c
+++ b/libknet/threads_heartbeat.c
@@ -1,133 +1,134 @@
/*
* Copyright (C) 2010-2015 Red Hat, Inc. All rights reserved.
*
* Authors: Fabio M. Di Nitto <fabbione@kronosnet.org>
* Federico Simoncelli <fsimon@kronosnet.org>
*
* This software licensed under GPL-2.0+, LGPL-2.0+
*/
#include "config.h"
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <pthread.h>
#include <time.h>
#include "crypto.h"
#include "link.h"
#include "logging.h"
#include "threads_common.h"
#include "threads_heartbeat.h"
static void _link_down(knet_handle_t knet_h, struct knet_host *dst_host, struct knet_link *dst_link)
{
+ memset(&dst_link->pmtud_last, 0, sizeof(struct timespec));
dst_link->received_pong = 0;
dst_link->status.pong_last.tv_nsec = 0;
if (dst_link->status.connected == 1) {
log_info(knet_h, KNET_SUB_LINK, "host: %u link: %u is down",
dst_host->host_id, dst_link->link_id);
_link_updown(knet_h, dst_host->host_id, dst_link->link_id, dst_link->status.enabled, 0);
}
}
static void _handle_check_each(knet_handle_t knet_h, struct knet_host *dst_host, struct knet_link *dst_link)
{
int len;
ssize_t outlen = KNET_HEADER_PING_SIZE;
struct timespec clock_now, pong_last;
unsigned long long diff_ping;
unsigned char *outbuf = (unsigned char *)knet_h->pingbuf;
if (dst_link->transport_connected == 0) {
_link_down(knet_h, dst_host, dst_link);
return;
}
/* caching last pong to avoid race conditions */
pong_last = dst_link->status.pong_last;
if (clock_gettime(CLOCK_MONOTONIC, &clock_now) != 0) {
log_debug(knet_h, KNET_SUB_HEARTBEAT, "Unable to get monotonic clock");
return;
}
timespec_diff(dst_link->ping_last, clock_now, &diff_ping);
if (diff_ping >= (dst_link->ping_interval * 1000llu)) {
memmove(&knet_h->pingbuf->khp_ping_time[0], &clock_now, sizeof(struct timespec));
knet_h->pingbuf->khp_ping_link = dst_link->link_id;
if (knet_h->crypto_instance) {
if (crypto_encrypt_and_sign(knet_h,
(const unsigned char *)knet_h->pingbuf,
outlen,
knet_h->pingbuf_crypt,
&outlen) < 0) {
log_debug(knet_h, KNET_SUB_HEARTBEAT, "Unable to crypto ping packet");
return;
}
outbuf = knet_h->pingbuf_crypt;
}
len = sendto(dst_link->outsock, outbuf, outlen,
MSG_DONTWAIT | MSG_NOSIGNAL, (struct sockaddr *) &dst_link->dst_addr,
sizeof(struct sockaddr_storage));
dst_link->ping_last = clock_now;
if (len != outlen) {
log_debug(knet_h, KNET_SUB_HEARTBEAT,
"Unable to send ping (sock: %d) packet (sendto): %d %s. recorded src ip: %s src port: %s dst ip: %s dst port: %s",
dst_link->outsock, errno, strerror(errno),
dst_link->status.src_ipaddr, dst_link->status.src_port,
dst_link->status.dst_ipaddr, dst_link->status.dst_port);
} else {
dst_link->last_ping_size = outlen;
}
}
timespec_diff(pong_last, clock_now, &diff_ping);
if ((pong_last.tv_nsec) &&
(diff_ping >= (dst_link->pong_timeout * 1000llu))) {
_link_down(knet_h, dst_host, dst_link);
}
}
void *_handle_heartbt_thread(void *data)
{
knet_handle_t knet_h = (knet_handle_t) data;
struct knet_host *dst_host;
int link_idx;
/* preparing ping buffer */
knet_h->pingbuf->kh_version = KNET_HEADER_VERSION;
knet_h->pingbuf->kh_type = KNET_HEADER_TYPE_PING;
knet_h->pingbuf->kh_node = htons(knet_h->host_id);
while (!shutdown_in_progress(knet_h)) {
usleep(KNET_THREADS_TIMERES);
if (pthread_rwlock_rdlock(&knet_h->global_rwlock) != 0) {
log_debug(knet_h, KNET_SUB_HEARTBEAT, "Unable to get read lock");
continue;
}
for (dst_host = knet_h->host_head; dst_host != NULL; dst_host = dst_host->next) {
for (link_idx = 0; link_idx < KNET_MAX_LINK; link_idx++) {
if ((dst_host->link[link_idx].status.enabled != 1) ||
((dst_host->link[link_idx].dynamic == KNET_LINK_DYNIP) &&
(dst_host->link[link_idx].status.dynconnected != 1)))
continue;
_handle_check_each(knet_h, dst_host, &dst_host->link[link_idx]);
}
}
pthread_rwlock_unlock(&knet_h->global_rwlock);
}
return NULL;
}

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