patch 'vhost: fix net control virtqueue used length' has been queued to stable release 24.11.3

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 24.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 07/23/25. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/d27ea2d70ec65624846680f74c7f9cc981265b9a

Thanks.

Kevin

---
>From d27ea2d70ec65624846680f74c7f9cc981265b9a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma at redhat.com>
Date: Thu, 5 Jun 2025 13:35:34 +0200
Subject: [PATCH] vhost: fix net control virtqueue used length
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

[ upstream commit 69244dbc485d72ecf25d561ed085ecece69f6f33 ]

By the standard this is the number of bytes written.

Fixes: 474f4d7840ad ("vhost: add control virtqueue")

Signed-off-by: Eugenio Pérez <eperezma at redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
---
 lib/vhost/virtio_net_ctrl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/vhost/virtio_net_ctrl.c b/lib/vhost/virtio_net_ctrl.c
index 5d411fc248..61c4e54421 100644
--- a/lib/vhost/virtio_net_ctrl.c
+++ b/lib/vhost/virtio_net_ctrl.c
@@ -230,5 +230,5 @@ virtio_net_ctrl_push(struct virtio_net *dev, struct virtio_net_ctrl_elem *ctrl_e
 	used_elem = &cvq->used->ring[cvq->last_used_idx & (cvq->size - 1)];
 	used_elem->id = ctrl_elem->head_idx;
-	used_elem->len = ctrl_elem->n_descs;
+	used_elem->len = sizeof(*ctrl_elem->desc_ack);
 
 	cvq->last_used_idx++;
-- 
2.50.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-07-18 20:29:14.988538774 +0100
+++ 0114-vhost-fix-net-control-virtqueue-used-length.patch	2025-07-18 20:29:11.054907711 +0100
@@ -1 +1 @@
-From 69244dbc485d72ecf25d561ed085ecece69f6f33 Mon Sep 17 00:00:00 2001
+From d27ea2d70ec65624846680f74c7f9cc981265b9a Mon Sep 17 00:00:00 2001
@@ -8,0 +9,2 @@
+[ upstream commit 69244dbc485d72ecf25d561ed085ecece69f6f33 ]
+
@@ -12 +13,0 @@
-Cc: stable at dpdk.org
@@ -21 +22 @@
-index 63c0a06b4f..603a8db728 100644
+index 5d411fc248..61c4e54421 100644