diff --git a/src/core/lib/iomgr/tcp_posix.cc b/src/core/lib/iomgr/tcp_posix.cc
index 44829e2ac52..1db2790265e 100644
--- a/src/core/lib/iomgr/tcp_posix.cc
+++ b/src/core/lib/iomgr/tcp_posix.cc
@@ -546,6 +546,19 @@ static void tcp_read(grpc_endpoint* ep, grpc_slice_buffer* incoming_buffer,
   }
 }
 
+/* A wrapper around sendmsg. It sends \a msg over \a fd and returns the number
+ * of bytes sent. */
+ssize_t tcp_send(int fd, const struct msghdr* msg) {
+  GPR_TIMER_SCOPE("sendmsg", 1);
+  ssize_t sent_length;
+  do {
+    /* TODO(klempner): Cork if this is a partial write */
+    GRPC_STATS_INC_SYSCALL_WRITE();
+    sent_length = sendmsg(fd, msg, SENDMSG_FLAGS);
+  } while (sent_length < 0 && errno == EINTR);
+  return sent_length;
+}
+
 /** This is to be called if outgoing_buffer_arg is not null. On linux platforms,
  * this will call sendmsg with socket options set to collect timestamps inside
  * the kernel. On return, sent_length is set to the return value of the sendmsg
@@ -575,7 +588,7 @@ static bool tcp_write_with_timestamps(grpc_tcp* tcp, struct msghdr* msg,
       }
       return false;
     }
-    tcp->bytes_counter = 0;
+    tcp->bytes_counter = -1;
     tcp->socket_ts_enabled = true;
   }
   /* Set control message to indicate that you want timestamps. */
@@ -593,7 +606,7 @@ static bool tcp_write_with_timestamps(grpc_tcp* tcp, struct msghdr* msg,
   msg->msg_controllen = CMSG_SPACE(sizeof(uint32_t));
 
   /* If there was an error on sendmsg the logic in tcp_flush will handle it. */
-  ssize_t length = sendmsg_wrapper(tcp->fd, msg);
+  ssize_t length = tcp_send(tcp->fd, msg);
   *sent_length = length;
   /* Only save timestamps if all the bytes were taken by sendmsg. */
   if (sending_length == static_cast<size_t>(length)) {
@@ -761,19 +774,6 @@ static void tcp_handle_error(void* arg /* grpc_tcp */, grpc_error* error) {
 }
 #endif /* GRPC_LINUX_ERRQUEUE */
 
-/* A wrapper around sendmsg. It sends \a msg over \a fd and returns the number
- * of bytes sent. */
-ssize_t sendmsg_wrapper(int fd, const struct msghdr* msg) {
-  GPR_TIMER_SCOPE("sendmsg", 1);
-  ssize_t sent_length;
-  do {
-    /* TODO(klempner): Cork if this is a partial write */
-    GRPC_STATS_INC_SYSCALL_WRITE();
-    sent_length = sendmsg(fd, msg, SENDMSG_FLAGS);
-  } while (sent_length < 0 && errno == EINTR);
-  return sent_length;
-}
-
 /* returns true if done, false if pending; if returning true, *error is set */
 #if defined(IOV_MAX) && IOV_MAX < 1000
 #define MAX_WRITE_IOVEC IOV_MAX
@@ -830,7 +830,7 @@ static bool tcp_flush(grpc_tcp* tcp, grpc_error** error) {
       GRPC_STATS_INC_TCP_WRITE_SIZE(sending_length);
       GRPC_STATS_INC_TCP_WRITE_IOV_SIZE(iov_size);
 
-      sent_length = sendmsg_wrapper(tcp->fd, &msg);
+      sent_length = tcp_send(tcp->fd, &msg);
     }
 
     if (sent_length < 0) {