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authorGerd Hoffmann <kraxel@redhat.com>2015-06-01 10:45:40 +0200
committerMichael S. Tsirkin <mst@redhat.com>2015-06-01 14:18:55 +0200
commit019a3edbb25f1571e876f8af1ce4c55412939e5d (patch)
tree2af699ef896ecdeb322a8775641299acccdd255a /hw/net
parentfdba6d967e00864edd21275a6ee1d23a383510e8 (diff)
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virtio: make features 64bit wide
Make features 64bit wide everywhere. On migration a full 64bit guest_features field is sent if one of the high bits is set, in addition to the lower 32bit guest_features field which must stay for compatibility reasons. That way we send the lower 32 feature bits twice, but the code is simpler because we don't have to split and compose the 64bit features into two 32bit fields. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/net')
-rw-r--r--hw/net/virtio-net.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 6dca726..012ab7f 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -435,7 +435,7 @@ static void virtio_net_set_queues(VirtIONet *n)
static void virtio_net_set_multiqueue(VirtIONet *n, int multiqueue);
-static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features)
+static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features)
{
VirtIONet *n = VIRTIO_NET(vdev);
NetClientState *nc = qemu_get_queue(n->nic);
@@ -468,9 +468,9 @@ static uint32_t virtio_net_get_features(VirtIODevice *vdev, uint32_t features)
return vhost_net_get_features(get_vhost_net(nc->peer), features);
}
-static uint32_t virtio_net_bad_features(VirtIODevice *vdev)
+static uint64_t virtio_net_bad_features(VirtIODevice *vdev)
{
- uint32_t features = 0;
+ uint64_t features = 0;
/* Linux kernel 2.6.25. It understood MAC (as everyone must),
* but also these: */
@@ -1032,10 +1032,12 @@ static ssize_t virtio_net_receive(NetClientState *nc, const uint8_t *buf, size_t
if (i == 0)
return -1;
error_report("virtio-net unexpected empty queue: "
- "i %zd mergeable %d offset %zd, size %zd, "
- "guest hdr len %zd, host hdr len %zd guest features 0x%x",
- i, n->mergeable_rx_bufs, offset, size,
- n->guest_hdr_len, n->host_hdr_len, vdev->guest_features);
+ "i %zd mergeable %d offset %zd, size %zd, "
+ "guest hdr len %zd, host hdr len %zd "
+ "guest features 0x%" PRIx64,
+ i, n->mergeable_rx_bufs, offset, size,
+ n->guest_hdr_len, n->host_hdr_len,
+ vdev->guest_features);
exit(1);
}
@@ -1518,7 +1520,7 @@ static void virtio_net_guest_notifier_mask(VirtIODevice *vdev, int idx,
vdev, idx, mask);
}
-static void virtio_net_set_config_size(VirtIONet *n, uint32_t host_features)
+static void virtio_net_set_config_size(VirtIONet *n, uint64_t host_features)
{
int i, config_size = 0;
virtio_add_feature(&host_features, VIRTIO_NET_F_MAC);