diff options
Diffstat (limited to 'hw/virtio-net.c')
| -rw-r--r-- | hw/virtio-net.c | 39 |
1 files changed, 16 insertions, 23 deletions
diff --git a/hw/virtio-net.c b/hw/virtio-net.c index ab20a33e21..c2a389ffb5 100644 --- a/hw/virtio-net.c +++ b/hw/virtio-net.c @@ -147,34 +147,27 @@ static int peer_has_ufo(VirtIONet *n) return n->has_ufo; } -static uint32_t virtio_net_get_features(VirtIODevice *vdev) +static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features) { VirtIONet *n = to_virtio_net(vdev); - uint32_t features = (1 << VIRTIO_NET_F_MAC) | - (1 << VIRTIO_NET_F_MRG_RXBUF) | - (1 << VIRTIO_NET_F_STATUS) | - (1 << VIRTIO_NET_F_CTRL_VQ) | - (1 << VIRTIO_NET_F_CTRL_RX) | - (1 << VIRTIO_NET_F_CTRL_VLAN) | - (1 << VIRTIO_NET_F_CTRL_RX_EXTRA); if (peer_has_vnet_hdr(n)) { tap_using_vnet_hdr(n->nic->nc.peer, 1); + } else { + features &= ~(0x1 << VIRTIO_NET_F_CSUM); + features &= ~(0x1 << VIRTIO_NET_F_HOST_TSO4); + features &= ~(0x1 << VIRTIO_NET_F_HOST_TSO6); + features &= ~(0x1 << VIRTIO_NET_F_HOST_ECN); + + features &= ~(0x1 << VIRTIO_NET_F_GUEST_CSUM); + features &= ~(0x1 << VIRTIO_NET_F_GUEST_TSO4); + features &= ~(0x1 << VIRTIO_NET_F_GUEST_TSO6); + features &= ~(0x1 << VIRTIO_NET_F_GUEST_ECN); + } - features |= (1 << VIRTIO_NET_F_CSUM); - features |= (1 << VIRTIO_NET_F_HOST_TSO4); - features |= (1 << VIRTIO_NET_F_HOST_TSO6); - features |= (1 << VIRTIO_NET_F_HOST_ECN); - - features |= (1 << VIRTIO_NET_F_GUEST_CSUM); - features |= (1 << VIRTIO_NET_F_GUEST_TSO4); - features |= (1 << VIRTIO_NET_F_GUEST_TSO6); - features |= (1 << VIRTIO_NET_F_GUEST_ECN); - - if (peer_has_ufo(n)) { - features |= (1 << VIRTIO_NET_F_GUEST_UFO); - features |= (1 << VIRTIO_NET_F_HOST_UFO); - } + if (!peer_has_vnet_hdr(n) || !peer_has_ufo(n)) { + features &= ~(0x1 << VIRTIO_NET_F_GUEST_UFO); + features &= ~(0x1 << VIRTIO_NET_F_HOST_UFO); } return features; @@ -192,7 +185,7 @@ static uint32_t virtio_net_bad_features(VirtIODevice *vdev) features |= (1 << VIRTIO_NET_F_HOST_TSO6); features |= (1 << VIRTIO_NET_F_HOST_ECN); - return features & virtio_net_get_features(vdev); + return features; } static void virtio_net_set_features(VirtIODevice *vdev, uint32_t features) |