quoted

The free running cycle counter of physical clocks called cycles shall be
used for hardware timestamps to enable synchronisation.

Introduce new flag SKBTX_HW_TSTAMP_USE_CYCLES, which signals driver to
provide a TX timestamp based on cycles if cycles are supported.

Signed-off-by: Gerhard Engleder <redacted>
---
 include/linux/skbuff.h |  5 +++++
 net/core/skbuff.c      |  5 +++++
 net/socket.c           | 11 ++++++++++-
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 3270cb72e4d8..fa03e02b761d 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h

@@ -615,6 +615,11 @@ enum {
      /* device driver is going to provide hardware time stamp */
      SKBTX_IN_PROGRESS = 1 << 2,

+     /* generate hardware time stamp based on cycles if supported, flag is
+      * used only for TX path
+      */
+     SKBTX_HW_TSTAMP_USE_CYCLES = 1 << 3,
+
      /* generate wifi status information (where possible) */
      SKBTX_WIFI_STATUS = 1 << 4,

Don't you need to update accordingly SKBTX_ANY_TSTAMP, so that this
flags is preserved on segmentation?

You are right, SKBTX_HW_TSTAMP_USE_CYCLES should be preserved like
SKBTX_HW_TSTAMP. I will fix that.

Thank you!

Gerhard