On Thu, Mar 24, 2022 at 06:49:34AM -0700, Richard Cochran wrote:

On Tue, Mar 22, 2022 at 10:07:18PM +0100, Gerhard Engleder wrote:

quoted

--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h

@@ -578,6 +578,9 @@ enum {
 	/* device driver is going to provide hardware time stamp */
 	SKBTX_IN_PROGRESS = 1 << 2,
 
+	/* generate hardware time stamp based on cycles if supported */
+	SKBTX_HW_TSTAMP_USE_CYCLES = 1 << 3,

Bit 4 used, but 3 was unused... interesting!

It seems the bit 3 and 5 were removed in commit 06b4feb37e64
("net: group skb_shinfo zerocopy related bits together.").

-- 
Miroslav Lichvar