ethdev: add Tx queue used count query

Introduce a new API to retrieve the number of used descriptors
in a Tx queue. Applications can leverage this API in the fast path to
inspect the Tx queue occupancy and take appropriate actions based on the
available free descriptors.

A notable use case could be implementing Random Early Discard (RED)
in software based on Tx queue occupancy.

Signed-off-by: Jerin Jacob <[email protected]>
Reviewed-by: Andrew Rybchenko <[email protected]>
Acked-by: Morten Brørup <[email protected]>
Acked-by: Konstantin Ananyev <[email protected]>
Reviewed-by: Ferruh Yigit <[email protected]>

1 files changed, 4 insertions, 0 deletions

diff --git a/devtools/libabigail.abignore b/devtools/libabigail.abignore
index 21b8cd6113..645d289a77 100644
--- a/devtools/libabigail.abignore
+++ b/devtools/libabigail.abignore
@@ -33,3 +33,7 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ; Temporary exceptions till next major ABI version ;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+[suppress_type]
+	name = rte_eth_fp_ops
+	has_data_member_inserted_between = {offset_of(reserved2), end}