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Thu, 19 Sep 2024 07:18:03 -0400 X-MC-Unique: 3wjlkWvtPja1TUFJPgUkbw-1 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (unknown [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 6E1FA19560B1; Thu, 19 Sep 2024 11:18:01 +0000 (UTC) Received: from [10.39.208.31] (unknown [10.39.208.31]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 23553195608A; Thu, 19 Sep 2024 11:17:58 +0000 (UTC) Message-ID: Date: Thu, 19 Sep 2024 13:17:56 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [EXTERNAL] [PATCH] net/virtio-user: reset used index counter in dev reset From: Maxime Coquelin To: Shiva Shankar Kommula , "dev@dpdk.org" , "chenbox@nvidia.com" Cc: "david.marchand@redhat.com" , Jerin Jacob , Nithin Kumar Dabilpuram , Srujana Challa References: <20240805100841.276796-1-kshankar@marvell.com> Autocrypt: addr=maxime.coquelin@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org 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 >>> >>> 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 >>> --- >>>   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 Thanks, Maxime