diff options
Diffstat (limited to 'hw/net')
| -rw-r--r-- | hw/net/virtio-net.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 98bd683..9a3d769 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -589,7 +589,15 @@ static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features, if (!get_vhost_net(nc->peer)) { return features; } - return vhost_net_get_features(get_vhost_net(nc->peer), features); + features = vhost_net_get_features(get_vhost_net(nc->peer), features); + vdev->backend_features = features; + + if (n->mtu_bypass_backend && + (n->host_features & 1ULL << VIRTIO_NET_F_MTU)) { + features |= (1ULL << VIRTIO_NET_F_MTU); + } + + return features; } static uint64_t virtio_net_bad_features(VirtIODevice *vdev) @@ -640,6 +648,11 @@ static void virtio_net_set_features(VirtIODevice *vdev, uint64_t features) VirtIONet *n = VIRTIO_NET(vdev); int i; + if (n->mtu_bypass_backend && + !virtio_has_feature(vdev->backend_features, VIRTIO_NET_F_MTU)) { + features &= ~(1ULL << VIRTIO_NET_F_MTU); + } + virtio_net_set_multiqueue(n, virtio_has_feature(features, VIRTIO_NET_F_MQ)); @@ -2093,6 +2106,8 @@ static Property virtio_net_properties[] = { DEFINE_PROP_UINT16("rx_queue_size", VirtIONet, net_conf.rx_queue_size, VIRTIO_NET_RX_QUEUE_DEFAULT_SIZE), DEFINE_PROP_UINT16("host_mtu", VirtIONet, net_conf.mtu, 0), + DEFINE_PROP_BOOL("x-mtu-bypass-backend", VirtIONet, mtu_bypass_backend, + true), DEFINE_PROP_END_OF_LIST(), }; |