Re: [Qemu-devel] [PATCH] vhost-user-scsi: add missing virtqueue_size param

[Richard W.M. Jones]

On Tue, Nov 14, 2017 at 05:28:36PM +0100, Dariusz Stojaczyk wrote:
> Commit 5c0919d0 [1] introduced virtqueue_size parameter
> for common virtio-scsi path, without updaing the vhost-user-scsi
> code. vhost-user-scsi devices right now report size 0 for each vq.
> 
> This patch introduces virtqueue_size param to vhost-user-scsi,
> that can now be set by the user. However, the most importantly, it
> now has a default value of 128 (same as QEMU's virtio-scsi).
> 
> [1] 5c0919d0 ("virtio-scsi: Add virtqueue_size parameter
> allowing virtqueue size to be set.")
> 
> Change-Id: I70e87eab702ebf1196c028dbf17d54fdc0c89a14
> Signed-off-by: Dariusz Stojaczyk <address@hidden>
> ---
>  hw/scsi/vhost-user-scsi.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/hw/scsi/vhost-user-scsi.c b/hw/scsi/vhost-user-scsi.c
> index 500fa6a..f7561e2 100644
> --- a/hw/scsi/vhost-user-scsi.c
> +++ b/hw/scsi/vhost-user-scsi.c
> @@ -135,6 +135,8 @@ static Property vhost_user_scsi_properties[] = {
>      DEFINE_PROP_CHR("chardev", VirtIOSCSICommon, conf.chardev),
>      DEFINE_PROP_UINT32("boot_tpgt", VirtIOSCSICommon, conf.boot_tpgt, 0),
>      DEFINE_PROP_UINT32("num_queues", VirtIOSCSICommon, conf.num_queues, 1),
> +    DEFINE_PROP_UINT32("virtqueue_size", VirtIOSCSICommon, 
> conf.virtqueue_size,
> +                       128),
>      DEFINE_PROP_UINT32("max_sectors", VirtIOSCSICommon, conf.max_sectors,
>                         0xFFFF),
>      DEFINE_PROP_UINT32("cmd_per_lun", VirtIOSCSICommon, conf.cmd_per_lun, 
> 128),

Looks good to me.

However I don't really know the code well enough to say if there
could be other problems.

Rich.

-- 
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