ntp: don't request TX timestamp when SW/HW timestamping is disabled

diff --git a/ntp_io_linux.c b/ntp_io_linux.c
index 00caed06f7ba2e4289767b1a492e30a1edbdac73..8edcfcca84a7d551ba7d34556da6a136b5c9fd00 100644 (file)
--- a/ntp_io_linux.c
+++ b/ntp_io_linux.c
@@ -682,6 +682,9 @@ NIO_Linux_RequestTxTimestamp(struct msghdr *msg, int cmsglen, int sock_fd)
 {
   struct cmsghdr *cmsg;
 
+  if (!ts_flags)
+    return cmsglen;
+
   /* Check if TX timestamping is disabled on this socket */
   if (permanent_ts_options || !NIO_IsServerSocket(sock_fd))
     return cmsglen;