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-rw-r--r--include/linux/skbuff.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 890fb3307dd6..369430340ed9 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -211,7 +211,7 @@ static inline void skb_frag_size_sub(skb_frag_t *frag, int delta)
* struct skb_shared_hwtstamps - hardware time stamps
* @hwtstamp: hardware time stamp transformed into duration
* since arbitrary point in time
- * @syststamp: hwtstamp transformed to system time base
+ * @syststamp: hwtstamp transformed to system time base (deprecated)
*
* Software time stamps generated by ktime_get_real() are stored in
* skb->tstamp. The relation between the different kinds of time
@@ -222,7 +222,9 @@ static inline void skb_frag_size_sub(skb_frag_t *frag, int delta)
* syststamp/tstamp/"syststamp from other device" comparison is
* limited by the accuracy of the transformation into system time
* base. This depends on the device driver and its underlying
- * hardware.
+ * hardware. The syststamp implementation is deprecated in favor
+ * of hwtstamps and hw PTP clock sources exposed directly to
+ * userspace.
*
* hwtstamps can only be compared against other hwtstamps from
* the same device.
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