From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: Shiva Shankar Kommula <kshankar@marvell.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"chenbox@nvidia.com" <chenbox@nvidia.com>
Cc: "david.marchand@redhat.com" <david.marchand@redhat.com>,
Jerin Jacob <jerinj@marvell.com>,
Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>,
Srujana Challa <schalla@marvell.com>
Subject: Re: [EXTERNAL] [PATCH] net/virtio-user: reset used index counter in dev reset
Date: Thu, 19 Sep 2024 13:17:56 +0200 [thread overview]
Message-ID: <fe74dd92-53c0-4055-a90d-73db56293b6c@redhat.com> (raw)
In-Reply-To: <fd4df840-f440-42bd-9950-59dbcf5115bf@redhat.com>
On 9/19/24 12:54, Maxime Coquelin wrote:
> Hi,
>
> On 9/6/24 12:14, Shiva Shankar Kommula wrote:
>> Hello Maxime,
>> could you please review the following change ?
>>
>> Thanks
>>
>>> Subject: [EXTERNAL] [PATCH] net/virtio-user: reset used index counter
>>> in dev
>>> reset
>>>
>>> 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. Signed-off-by: Kommula Shiva
>>> Shankar
>>> <kshankar@ marvell. com>
>>> 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.
>
> I think it needs to be backported to stable releases.
> What about this?
>
> Fixes: 48a4464029a7 ("net/virtio-user: support control VQ for packed")
> Cc: stable@dpdk.org
>
>>>
>>> Signed-off-by: Kommula Shiva Shankar <kshankar@marvell.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 ae6593ba0b..d60c7e188c 100644
>>> --- a/drivers/net/virtio/virtio_user_ethdev.c
>>> +++ b/drivers/net/virtio/virtio_user_ethdev.c
>>> @@ -204,6 +204,7 @@ 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;
>>> --
>>> 2.43.0
>>
With added Fixes tag:
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Thanks,
Maxime
next prev parent reply other threads:[~2024-09-19 11:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-05 10:08 Kommula Shiva Shankar
2024-09-06 10:14 ` [EXTERNAL] " Shiva Shankar Kommula
2024-09-19 10:54 ` Maxime Coquelin
2024-09-19 11:17 ` Maxime Coquelin [this message]
2024-09-19 12:06 ` Maxime Coquelin
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