static void send_udppacket(meshlink_handle_t *mesh, node_t *, vpn_packet_t *);
-unsigned replaywin = 16;
-
#define MAX_SEQNO 1073741824
/* mtuprobes == 1..30: initial discovery, send bursts with 1 second interval
packet.len = len;
n->status.broadcast = i >= 4 && n->mtuprobes <= 10 && n->prevedge;
- logger(mesh, MESHLINK_INFO, "Sending MTU probe length %d to %s (%s)", len, n->name, n->hostname);
+ logger(mesh, MESHLINK_DEBUG, "Sending MTU probe length %d to %s (%s)", len, n->name, n->hostname);
send_udppacket(mesh, n, &packet);
}
n->status.broadcast = false;
- n->probe_counter = 0;
- gettimeofday(&n->probe_time, NULL);
-
- /* Calculate the packet loss of incoming traffic by comparing the rate of
- packets received to the rate with which the sequence number has increased.
- */
-
- if(n->received > n->prev_received)
- n->packetloss = 1.0 - (n->received - n->prev_received) / (float)(n->received_seqno - n->prev_received_seqno);
- else
- n->packetloss = n->received_seqno <= n->prev_received_seqno;
-
- n->prev_received_seqno = n->received_seqno;
- n->prev_received = n->received;
end:
timeout_set(&mesh->loop, &n->mtutimeout, &(struct timeval){timeout, rand() % 100000});
}
static void mtu_probe_h(meshlink_handle_t *mesh, node_t *n, vpn_packet_t *packet, uint16_t len) {
- logger(mesh, MESHLINK_INFO, "Got MTU probe length %d from %s (%s)", packet->len, n->name, n->hostname);
+ logger(mesh, MESHLINK_DEBUG, "Got MTU probe length %d from %s (%s)", packet->len, n->name, n->hostname);
if(!packet->data[0]) {
/* It's a probe request, send back a reply */
len = n->maxmtu;
if(n->minmtu < len)
n->minmtu = len;
-
- /* Calculate RTT and bandwidth.
- The RTT is the time between the MTU probe burst was sent and the first
- reply is received. The bandwidth is measured using the time between the
- arrival of the first and third probe reply.
- */
-
- struct timeval now, diff;
- gettimeofday(&now, NULL);
- timersub(&now, &n->probe_time, &diff);
-
- n->probe_counter++;
-
- if(n->probe_counter == 1) {
- n->rtt = diff.tv_sec + diff.tv_usec * 1e-6;
- n->probe_time = now;
- } else if(n->probe_counter == 3) {
- n->bandwidth = 2.0 * len / (diff.tv_sec + diff.tv_usec * 1e-6);
- logger(mesh, MESHLINK_DEBUG, "%s (%s) RTT %.2f ms, burst bandwidth %.3f Mbit/s, rx packet loss %.2f %%", n->name, n->hostname, n->rtt * 1e3, n->bandwidth * 8e-6, n->packetloss * 1e2);
- }
}
}
return;
}
- logger(mesh, MESHLINK_ERROR, "Sending packet of %d bytes to %s (%s)",
+ logger(mesh, MESHLINK_DEBUG, "Sending packet of %d bytes to %s (%s)",
packet->len, n->name, n->hostname);
if(!n->status.reachable) {
- logger(mesh, MESHLINK_INFO, "Node %s (%s) is not reachable",
+ logger(mesh, MESHLINK_WARNING, "Node %s (%s) is not reachable",
n->name, n->hostname);
return;
}