rings: add support to set/get cqe size

After a packet is sent or received by NIC then NIC posts
a completion queue event which consists of transmission status
(like send success or error) and received status(like
pointers to packet fragments). These completion events may
also use a ring similar to rx and tx rings. This patch
introduces cqe-size ethtool parameter to modify the size
of the completion queue event if NIC hardware has that capability.
With this patch in place, cqe size can be set via
"ethtool -G <dev> cqe-size xxx" and get via "ethtool -g <dev>".

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/ethtool.c b/ethtool.c
index 2772530..209e22c 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -5733,6 +5733,7 @@ static const struct option args[] = {
 			  "		[ rx-jumbo N ]\n"
 			  "		[ tx N ]\n"
 			  "		[ rx-buf-len N]\n"
+			  "             [ cqe-size N]\n"
 	},
 	{
 		.opts	= "-k|--show-features|--show-offload",