Maxime Coquelin <maxime.coque...@redhat.com> writes:
> If VHOST_USER_F_MTU feature is negociated, vhost-net makes the
> advised MTU available to virtio-net through a vhost_net_get_mtu()
s/advised/maximum/
> call.
>
> Cc: Michael S. Tsirkin <m...@redhat.com>
> Cc: Aaron Conole <acon...@redhat.com>
> Signed-off-by: Maxime Coquelin <maxime.coque...@redhat.com>
> ---
> hw/net/vhost_net.c | 11 +++++++++++
> include/net/vhost_net.h | 2 ++
> 2 files changed, 13 insertions(+)
>
> diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
> index f2d49ad..21057d6 100644
> --- a/hw/net/vhost_net.c
> +++ b/hw/net/vhost_net.c
> @@ -74,6 +74,7 @@ static const int user_feature_bits[] = {
> VIRTIO_NET_F_HOST_ECN,
> VIRTIO_NET_F_HOST_UFO,
> VIRTIO_NET_F_MRG_RXBUF,
> + VIRTIO_NET_F_MTU,
>
> /* This bit implies RARP isn't sent by QEMU out of band */
> VIRTIO_NET_F_GUEST_ANNOUNCE,
> @@ -435,6 +436,11 @@ int vhost_set_vring_enable(NetClientState *nc, int
> enable)
> return 0;
> }
>
> +uint64_t vhost_net_get_mtu(struct vhost_net *net)
> +{
> + return net->dev.mtu;
> +}
> +
> #else
> uint64_t vhost_net_get_max_queues(VHostNetState *net)
> {
> @@ -501,4 +507,9 @@ int vhost_set_vring_enable(NetClientState *nc, int enable)
> {
> return 0;
> }
> +
> +uint64_t vhost_net_get_mtu(struct vhost_net *net)
> +{
> + return 0;
> +}
> #endif
> diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h
> index 5a08eff..37de17b 100644
> --- a/include/net/vhost_net.h
> +++ b/include/net/vhost_net.h
> @@ -35,4 +35,6 @@ int vhost_set_vring_enable(NetClientState * nc, int enable);
>
> uint64_t vhost_net_get_acked_features(VHostNetState *net);
>
> +uint64_t vhost_net_get_mtu(struct vhost_net *net);
> +
> #endif
