patch 'net/virtio-user: reset used index counter' has been queued to stable release 22.11.7

[luca.boccassi@gmail.com]

Hi,

FYI, your patch has been queued to stable release 22.11.7

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 10/25/24. 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/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/768ca32567522f0a75e458add4069dd4b171d6c3

Thanks.

Luca Boccassi

---
From 768ca32567522f0a75e458add4069dd4b171d6c3 Mon Sep 17 00:00:00 2001
From: Kommula Shiva Shankar <kshankar@marvell.com>
Date: Mon, 5 Aug 2024 10:08:41 +0000
Subject: [PATCH] net/virtio-user: reset used index counter

[ upstream commit ff11fc60c5d8d9ae5a0f0114db4c3bc834090548 ]

When the virtio device is reinitialized during ethdev reconfiguration,
all the virtio rings are recreated and repopulated on the device.
Accordingly, reset the used index counter value back to zero.

Fixes: 48a4464029a7 ("net/virtio-user: support control VQ for packed")

Signed-off-by: Kommula Shiva Shankar <kshankar@marvell.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 drivers/net/virtio/virtio_user_ethdev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/virtio/virtio_user_ethdev.c b/drivers/net/virtio/virtio_user_ethdev.c
index 78b1ed9ace..ae087b0c92 100644
--- a/drivers/net/virtio/virtio_user_ethdev.c
+++ b/drivers/net/virtio/virtio_user_ethdev.c
@@ -199,6 +199,7 @@ virtio_user_setup_queue_packed(struct virtqueue *vq,
 	vring->device = (void *)(uintptr_t)used_addr;
 	dev->packed_queues[queue_idx].avail_wrap_counter = true;
 	dev->packed_queues[queue_idx].used_wrap_counter = true;
+	dev->packed_queues[queue_idx].used_idx = 0;
 
 	for (i = 0; i < vring->num; i++)
 		vring->desc[i].flags = 0;
-- 
2.45.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2024-10-23 22:16:41.700365835 +0100
+++ 0031-net-virtio-user-reset-used-index-counter.patch	2024-10-23 22:16:40.467941496 +0100
@@ -1 +1 @@
-From ff11fc60c5d8d9ae5a0f0114db4c3bc834090548 Mon Sep 17 00:00:00 2001
+From 768ca32567522f0a75e458add4069dd4b171d6c3 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit ff11fc60c5d8d9ae5a0f0114db4c3bc834090548 ]
+
@@ -11 +12,0 @@
-Cc: stable@dpdk.org
@@ -20 +21 @@
-index bf29f0dacd..747dddeb2e 100644
+index 78b1ed9ace..ae087b0c92 100644
@@ -23 +24 @@
-@@ -204,6 +204,7 @@ virtio_user_setup_queue_packed(struct virtqueue *vq,
+@@ -199,6 +199,7 @@ virtio_user_setup_queue_packed(struct virtqueue *vq,