X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/9b845d6549f426b892d61b5d05adb2823ecaf991..a0bcaa3081b80b312bef04071c56aa58d820fcf2:/tcpdump.c

diff --git a/tcpdump.c b/tcpdump.c
index 0d6ff783..520d69f7 100644
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -2082,7 +2082,7 @@ main(int argc, char **argv)
 	if (ndo->ndo_vflag > 0 && WFileName && !print) {
 		/*
 		 * When capturing to a file, if "--print" wasn't specified,
-		 *"-v" means tcpdump should, every 10 seconds,
+		 *"-v" means tcpdump should, once per second,
 		 * "v"erbosely report the number of packets captured.
 		 */
 #ifdef USE_WIN32_MM_TIMER
@@ -2693,6 +2693,18 @@ RETSIGTYPE requestinfo(int signo _U_)
 }
 #endif
 
+static void
+print_packets_captured (void)
+{
+	static u_int prev_packets_captured, first = 1;
+
+	if (infodelay == 0 && (first || packets_captured != prev_packets_captured)) {
+		fprintf(stderr, "Got %u\r", packets_captured);
+		first = 0;
+		prev_packets_captured = packets_captured;
+	}
+}
+
 /*
  * Called once each second in verbose mode while dumping to file
  */
@@ -2700,14 +2712,12 @@ RETSIGTYPE requestinfo(int signo _U_)
 void CALLBACK verbose_stats_dump (UINT timer_id _U_, UINT msg _U_, DWORD_PTR arg _U_,
 				  DWORD_PTR dw1 _U_, DWORD_PTR dw2 _U_)
 {
-	if (infodelay == 0)
-		fprintf(stderr, "Got %u\r", packets_captured);
+	print_packets_captured();
 }
 #elif defined(HAVE_ALARM)
 static void verbose_stats_dump(int sig _U_)
 {
-	if (infodelay == 0)
-		fprintf(stderr, "Got %u\r", packets_captured);
+	print_packets_captured();
 	alarm(1);
 }
 #endif