[PATCH net-next v4 3/3] net/sched: pie: correct tc_pie_xstats field documentation

[Hemendra M. Naik]

The comments describing `struct tc_pie_xstats` do not match the values
exported by the kernel.

Update the `delay` field comment to indicate that the value is reported
in microseconds, matching the `PSCHED_TICKS2NS() / NSEC_PER_USEC`
conversion.

Similarly, update the `avg_dq_rate` field comment to indicate that the
value is reported in bytes/second, matching the conversion performed by
`avg_dq_rate * PSCHED_TICKS_PER_SEC >> PIE_SCALE`.

These are documentation-only changes and do not modify the UAPI layout
or runtime behavior.

Signed-off-by: Hemendra M. Naik <hemendranaik@xxxxxxxxx>
Signed-off-by: Vishal Kamath <vishy0777@xxxxxxxxx>
Signed-off-by: Mohit P. Tahiliani <tahiliani@xxxxxxxxxxx>
---
 include/uapi/linux/pkt_sched.h       | 4 ++--
 tools/include/uapi/linux/pkt_sched.h | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/uapi/linux/pkt_sched.h b/include/uapi/linux/pkt_sched.h
index 9a86fa4d6846..26b7e6964adb 100644
--- a/include/uapi/linux/pkt_sched.h
+++ b/include/uapi/linux/pkt_sched.h
@@ -920,9 +920,9 @@ enum {
 
 struct tc_pie_xstats {
 	__u64 prob;			/* current probability */
-	__u32 delay;			/* current delay in ms */
+	__u32 delay;			/* current delay in microseconds */
 	__u32 avg_dq_rate;		/* current average dq_rate in
-					 * bits/pie_time
+					 * bytes/second
 					 */
 	__u32 dq_rate_estimating;	/* is avg_dq_rate being calculated? */
 	__u32 packets_in;		/* total number of packets enqueued */
diff --git a/tools/include/uapi/linux/pkt_sched.h b/tools/include/uapi/linux/pkt_sched.h
index 587481a19433..9bc190f0b3cf 100644
--- a/tools/include/uapi/linux/pkt_sched.h
+++ b/tools/include/uapi/linux/pkt_sched.h
@@ -847,8 +847,8 @@ enum {
 
 struct tc_pie_xstats {
 	__u32 prob;             /* current probability */
-	__u32 delay;            /* current delay in ms */
-	__u32 avg_dq_rate;      /* current average dq_rate in bits/pie_time */
+	__u32 delay;            /* current delay in microseconds */
+	__u32 avg_dq_rate;      /* current average dq_rate in bytes/second */
 	__u32 packets_in;       /* total number of packets enqueued */
 	__u32 dropped;          /* packets dropped due to pie_action */
 	__u32 overlimit;        /* dropped due to lack of space in queue */
--
2.34.1