[dpdk-dev] [PATCH] net/virtio: fix vhost_kernel_set_owner for multi-queue devices

[Ferruh Yigit]

On 4/13/2021 9:45 AM, Maxime Coquelin wrote:
> Hi Thierry,
> 
> On 4/8/21 2:37 PM, Thierry Herbelot wrote:
>> Restore the original code, where VHOST_SET_OWNER is applied to
>> all vhostfds of the device.
>>
>> Fixes: 06856cabb89b0 ("net/virtio: add virtio-user ops to set owner")
>> Cc: Maxime Coquelin <maxime.coquelin at redhat.com>
>> Cc: Chenbo Xia <chenbo.xia at intel.com>
>> Signed-off-by: Thierry Herbelot <thierry.herbelot at 6wind.com>
>> ---
>>   drivers/net/virtio/virtio_user/vhost_kernel.c | 13 ++++++++++++-
>>   1 file changed, 12 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/net/virtio/virtio_user/vhost_kernel.c b/drivers/net/virtio/virtio_user/vhost_kernel.c
>> index 768db55a6c1f..58e66bb7b4ae 100644
>> --- a/drivers/net/virtio/virtio_user/vhost_kernel.c
>> +++ b/drivers/net/virtio/virtio_user/vhost_kernel.c
>> @@ -101,9 +101,20 @@ vhost_kernel_ioctl(int fd, uint64_t request, void *arg)
>>   static int
>>   vhost_kernel_set_owner(struct virtio_user_dev *dev)
>>   {
>> +	int ret;
>> +	uint32_t i;
>>   	struct vhost_kernel_data *data = dev->backend_data;
>>   
>> -	return vhost_kernel_ioctl(data->vhostfds[0], VHOST_SET_OWNER, NULL);
>> +	for (i = 0; i < dev->max_queue_pairs; ++i) {
>> +		if (data->vhostfds[i] < 0)
>> +			continue;
>> +
>> +		ret = vhost_kernel_ioctl(data->vhostfds[i], VHOST_SET_OWNER, NULL);
>> +		if (ret < 0)
>> +			return ret;
>> +	}
>> +
>> +	return 0;
>>   }
>>   
>>   static int
>>
> 
> Thanks for the fix, we indeed have to set owner for all the queue pairs.
> 
> Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> 

Applied to dpdk-next-net/main, thanks.