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
n->mtuprobes++;
if(!n->status.reachable || !n->status.validkey) {
- logger(DEBUG_TRAFFIC, LOG_INFO, "Trying to send MTU probe to unreachable or rekeying node %s (%s)", n->name, n->hostname);
+ logger(mesh, MESHLINK_INFO, "Trying to send MTU probe to unreachable or rekeying node %s (%s)", n->name, n->hostname);
n->mtuprobes = 0;
return;
}
goto end;
}
- logger(DEBUG_TRAFFIC, LOG_INFO, "%s (%s) did not respond to UDP ping, restarting PMTU discovery", n->name, n->hostname);
+ logger(mesh, MESHLINK_INFO, "%s (%s) did not respond to UDP ping, restarting PMTU discovery", n->name, n->hostname);
n->status.udp_confirmed = false;
n->mtuprobes = 1;
n->minmtu = 0;
}
if(n->mtuprobes >= 10 && n->mtuprobes < 32 && !n->minmtu) {
- logger(DEBUG_TRAFFIC, LOG_INFO, "No response to MTU probes from %s (%s)", n->name, n->hostname);
+ logger(mesh, MESHLINK_INFO, "No response to MTU probes from %s (%s)", n->name, n->hostname);
n->mtuprobes = 31;
}
else
n->maxmtu = n->minmtu;
n->mtu = n->minmtu;
- logger(DEBUG_TRAFFIC, LOG_INFO, "Fixing MTU of %s (%s) to %d after %d probes", n->name, n->hostname, n->mtu, n->mtuprobes);
+ logger(mesh, MESHLINK_INFO, "Fixing MTU of %s (%s) to %d after %d probes", n->name, n->hostname, n->mtu, n->mtuprobes);
n->mtuprobes = 31;
}
packet.len = len;
n->status.broadcast = i >= 4 && n->mtuprobes <= 10 && n->prevedge;
- logger(DEBUG_TRAFFIC, LOG_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(DEBUG_TRAFFIC, LOG_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 */
if(n->mtuprobes > 30) {
if (len == n->maxmtu + 8) {
- logger(DEBUG_TRAFFIC, LOG_INFO, "Increase in PMTU to %s (%s) detected, restarting PMTU discovery", n->name, n->hostname);
+ logger(mesh, MESHLINK_INFO, "Increase in PMTU to %s (%s) detected, restarting PMTU discovery", n->name, n->hostname);
n->maxmtu = MTU;
n->mtuprobes = 10;
return;
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(DEBUG_TRAFFIC, LOG_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);
- }
}
}
/* VPN packet I/O */
static void receive_packet(meshlink_handle_t *mesh, node_t *n, vpn_packet_t *packet) {
- logger(DEBUG_TRAFFIC, LOG_DEBUG, "Received packet of %d bytes from %s (%s)",
+ logger(mesh, MESHLINK_DEBUG, "Received packet of %d bytes from %s (%s)",
packet->len, n->name, n->hostname);
+ if (n->status.blacklisted) {
+ logger(mesh, MESHLINK_WARNING, "Dropping packet from blacklisted node %s", n->name);
+ } else {
n->in_packets++;
n->in_bytes += packet->len;
route(mesh, n, packet);
+ }
}
static bool try_mac(meshlink_handle_t *mesh, node_t *n, const vpn_packet_t *inpkt) {
static void receive_udppacket(meshlink_handle_t *mesh, node_t *n, vpn_packet_t *inpkt) {
if(!n->sptps.state) {
if(!n->status.waitingforkey) {
- logger(DEBUG_TRAFFIC, LOG_DEBUG, "Got packet from %s (%s) but we haven't exchanged keys yet", n->name, n->hostname);
+ logger(mesh, MESHLINK_DEBUG, "Got packet from %s (%s) but we haven't exchanged keys yet", n->name, n->hostname);
send_req_key(mesh, n);
} else {
- logger(DEBUG_TRAFFIC, LOG_DEBUG, "Got packet from %s (%s) but he hasn't got our key yet", n->name, n->hostname);
+ logger(mesh, MESHLINK_DEBUG, "Got packet from %s (%s) but he hasn't got our key yet", n->name, n->hostname);
}
return;
}
static void send_sptps_packet(meshlink_handle_t *mesh, node_t *n, vpn_packet_t *origpkt) {
if(!n->status.validkey) {
- logger(DEBUG_TRAFFIC, LOG_INFO, "No valid key known yet for %s (%s)", n->name, n->hostname);
+ logger(mesh, MESHLINK_INFO, "No valid key known yet for %s (%s)", n->name, n->hostname);
if(!n->status.waitingforkey)
send_req_key(mesh, n);
else if(n->last_req_key + 10 < mesh->loop.now.tv_sec) {
- logger(DEBUG_ALWAYS, LOG_DEBUG, "No key from %s after 10 seconds, restarting SPTPS", n->name);
+ logger(mesh, MESHLINK_DEBUG, "No key from %s after 10 seconds, restarting SPTPS", n->name);
sptps_stop(&n->sptps);
n->status.waitingforkey = false;
send_req_key(mesh, n);
if(n->outcompression) {
int len = compress_packet(outpkt.data, origpkt->data, origpkt->len, n->outcompression);
if(len < 0) {
- logger(DEBUG_TRAFFIC, LOG_ERR, "Error while compressing packet to %s (%s)", n->name, n->hostname);
+ logger(mesh, MESHLINK_ERROR, "Error while compressing packet to %s (%s)", n->name, n->hostname);
} else if(len < origpkt->len) {
outpkt.len = len;
origpkt = &outpkt;
static void send_udppacket(meshlink_handle_t *mesh, node_t *n, vpn_packet_t *origpkt) {
if(!n->status.reachable) {
- logger(DEBUG_TRAFFIC, LOG_INFO, "Trying to send UDP packet to unreachable node %s (%s)", n->name, n->hostname);
+ logger(mesh, MESHLINK_INFO, "Trying to send UDP packet to unreachable node %s (%s)", n->name, n->hostname);
return;
}
if(to->mtu >= len)
to->mtu = len - 1;
} else {
- logger(DEBUG_TRAFFIC, LOG_WARNING, "Error sending UDP SPTPS packet to %s (%s): %s", to->name, to->hostname, sockstrerror(sockerrno));
+ logger(mesh, MESHLINK_WARNING, "Error sending UDP SPTPS packet to %s (%s): %s", to->name, to->hostname, sockstrerror(sockerrno));
return false;
}
}
if(!from->status.validkey) {
from->status.validkey = true;
from->status.waitingforkey = false;
- logger(DEBUG_META, LOG_INFO, "SPTPS key exchange with %s (%s) succesful", from->name, from->hostname);
+ logger(mesh, MESHLINK_INFO, "SPTPS key exchange with %s (%s) succesful", from->name, from->hostname);
}
return true;
}
if(len > MTU) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Packet from %s (%s) larger than maximum supported size (%d > %d)", from->name, from->hostname, len, MTU);
+ logger(mesh, MESHLINK_ERROR, "Packet from %s (%s) larger than maximum supported size (%d > %d)", from->name, from->hostname, len, MTU);
return false;
}
}
if(type & ~(PKT_COMPRESSED)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Unexpected SPTPS record type %d len %d from %s (%s)", type, len, from->name, from->hostname);
+ logger(mesh, MESHLINK_ERROR, "Unexpected SPTPS record type %d len %d from %s (%s)", type, len, from->name, from->hostname);
return false;
}
return;
}
- logger(DEBUG_TRAFFIC, LOG_ERR, "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(DEBUG_TRAFFIC, LOG_INFO, "Node %s (%s) is not reachable",
+ logger(mesh, MESHLINK_WARNING, "Node %s (%s) is not reachable",
n->name, n->hostname);
return;
}
if(from != mesh->self)
send_packet(mesh, mesh->self, packet);
- logger(DEBUG_TRAFFIC, LOG_INFO, "Broadcasting packet of %d bytes from %s (%s)",
+ logger(mesh, MESHLINK_INFO, "Broadcasting packet of %d bytes from %s (%s)",
packet->len, from->name, from->hostname);
for list_each(connection_t, c, mesh->connections)
if(len <= 0 || len > MAXSIZE) {
if(!sockwouldblock(sockerrno))
- logger(DEBUG_ALWAYS, LOG_ERR, "Receiving packet failed: %s", sockstrerror(sockerrno));
+ logger(mesh, MESHLINK_ERROR, "Receiving packet failed: %s", sockstrerror(sockerrno));
return;
}
n = try_harder(mesh, &from, &pkt);
if(n)
update_node_udp(mesh, n, &from);
- else if(mesh->debug_level >= DEBUG_PROTOCOL) {
+ else if(mesh->log_level >= MESHLINK_WARNING) {
hostname = sockaddr2hostname(&from);
- logger(DEBUG_PROTOCOL, LOG_WARNING, "Received UDP packet from unknown source %s", hostname);
+ logger(mesh, MESHLINK_WARNING, "Received UDP packet from unknown source %s", hostname);
free(hostname);
return;
}
return;
}
+ if (n->status.blacklisted) {
+ logger(mesh, MESHLINK_WARNING, "Dropping packet from blacklisted node %s", n->name);
+ return;
+ }
n->sock = ls - mesh->listen_socket;
receive_udppacket(mesh, n, &pkt);