If VHOST_USER_F_MTU feature is negociated, vhost-net makes the
advised MTU available to virtio-net through a vhost_net_get_mtu()
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
--
2.7.4
