Remove unused replay window and RTT/bandwidth estimation code.

[meshlink] / src / net_packet.c

diff --git a/src/net_packet.c b/src/net_packet.c
index ca43d62c65b2f5a903af276229c564ed270068b8..54c38835a2316eecae88b98d118a6521891d87ad 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -40,8 +40,6 @@ int keylifetime = 0;
 
 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
@@ -138,20 +136,6 @@ static void send_mtu_probe_handler(event_loop_t *loop, void *data) {
        }
 
        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});
@@ -206,26 +190,6 @@ static void mtu_probe_h(meshlink_handle_t *mesh, node_t *n, vpn_packet_t *packet
                        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);
-               }
        }
 }