Fill histograms only if histogram option enabled

packet-exchange/src/client.c

@@ -245,7 +245,7 @@ static void do_tsn_task(struct thread_param *param, uint64_t next_txtime) {
     clock_gettime(CLOCK_MONOTONIC, &t1);
     send_udp_packet(0, 0, next_txtime,
                     network_config.ip_address, NULL);
-    recv_udp_packet(0, NULL);
+    recv_udp_packet(0, 0, NULL);
     clock_gettime(CLOCK_MONOTONIC, &t2);
 
     param->stats.rtt = calcdiff_ns(t2, t1);

packet-exchange/src/recv_packet.c

@@ -106,7 +106,7 @@ int init_udp_recv(int use_timestamps, char *network_if) {
 /*
  * Receives udp packets
  */
-packet_timestamps_t recv_udp_packet(int use_timestamps, int64_t histograms[NB_HISTOGRAMS][MAX_HIST_VAL]) {
+packet_timestamps_t recv_udp_packet(int use_timestamps, int use_histograms, int64_t histograms[NB_HISTOGRAMS][MAX_HIST_VAL]) {
 
   struct cmsghdr *cmsg;
   struct msghdr msg; // Message hardware, sent to the socket
@@ -154,8 +154,8 @@ packet_timestamps_t recv_udp_packet(int use_timestamps, int64_t histograms[NB_HI
 
         struct timespec *stamp = (struct timespec *)CMSG_DATA(cmsg);
         packet_ts.leave_kernel = ts_to_uint(*stamp);
-        fill_histograms(&packet_ts, histograms);
-
+        if(use_histograms)
+          fill_histograms(&packet_ts, histograms);
       }
     }
   }

packet-exchange/src/recv_packet.h

@@ -4,6 +4,6 @@
 #include "utilities.h"
 
 int init_udp_recv(int use_timestamps, char *network_if);
-packet_timestamps_t recv_udp_packet(int use_timestamps, int64_t histograms[NB_HISTOGRAMS][MAX_HIST_VAL]);
+packet_timestamps_t recv_udp_packet(int use_timestamps, int use_histograms, int64_t histograms[NB_HISTOGRAMS][MAX_HIST_VAL]);
 
 #endif

packet-exchange/src/server.c

@@ -131,12 +131,12 @@ static void *packet_receiving_thread(void *p) {
 
     if (tsn_task == RTT_TASK) {
 
-      recv_udp_packet(0, NULL);
+      recv_udp_packet(0, 0, NULL);
       send_udp_packet(0, 0, 0, network_config.ip_address, NULL);
 
     } else if (tsn_task == RECV_PACKET_TASK) {
 
-      param->stats.packet_ts = recv_udp_packet(enable_timestamps, histograms);
+      param->stats.packet_ts = recv_udp_packet(enable_timestamps, enable_histograms, histograms);
 
       clock_gettime(CLOCK_MONOTONIC, &current);