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Re: [Qemu-devel] [PATCH V2 1/2] vhost-user: sync backend features
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH V2 1/2] vhost-user: sync backend features |
Date: |
Thu, 30 Jul 2015 09:47:03 +0300 |
On Wed, Jul 29, 2015 at 11:06:48PM +0300, Marcel Apfelbaum wrote:
> Complete vhost-user negotiation by syncing
synching.
> the features
> supported by the backend.
>
> Signed-off-by: Marcel Apfelbaum <address@hidden>
> ---
> hw/virtio/vhost-user.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
> index c4428a1..b522437 100644
> --- a/hw/virtio/vhost-user.c
> +++ b/hw/virtio/vhost-user.c
> @@ -22,6 +22,7 @@
> #include <sys/socket.h>
> #include <sys/un.h>
> #include <linux/vhost.h>
> +#include <linux/virtio_net.h>
>
> #define VHOST_MEMORY_MAX_NREGIONS 8
>
> @@ -358,6 +359,22 @@ static int vhost_user_init(struct vhost_dev *dev, void
> *opaque)
> return err;
> }
>
> + if (__virtio_has_feature(msg.u64, VIRTIO_F_ANY_LAYOUT)) {
> + dev->backend_features |= 1ULL << VIRTIO_F_ANY_LAYOUT;
> + }
> +
> + if (__virtio_has_feature(msg.u64, VIRTIO_F_VERSION_1)) {
> + dev->backend_features |= 1ULL << VIRTIO_F_VERSION_1;
> + }
> +
> + if (__virtio_has_feature(msg.u64, VIRTIO_NET_F_MRG_RXBUF)) {
> + dev->backend_features |= 1ULL << VIRTIO_NET_F_MRG_RXBUF;
> + }
> +
> + if (__virtio_has_feature(msg.u64, VIRTIO_NET_F_MQ)) {
> + dev->backend_features |= 1ULL << VIRTIO_NET_F_MQ;
> + }
> +
A bit too early for MQ, isn't it?
> if (__virtio_has_feature(msg.u64, VHOST_USER_F_PROTOCOL_FEATURES)) {
> dev->backend_features |= 1ULL << VHOST_USER_F_PROTOCOL_FEATURES;
>
> --
> 2.1.0