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Diffstat (limited to 'hw/net/vhost_net.c')
-rw-r--r--hw/net/vhost_net.c33
1 files changed, 32 insertions, 1 deletions
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index 1c55517e36..8cbb2f618c 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -38,6 +38,7 @@
#include "standard-headers/linux/virtio_ring.h"
#include "hw/virtio/vhost.h"
#include "hw/virtio/virtio-bus.h"
+#include "hw/virtio/virtio-access.h"
struct vhost_net {
struct vhost_dev dev;
@@ -197,6 +198,27 @@ static void vhost_net_set_vq_index(struct vhost_net *net, int vq_index)
net->dev.vq_index = vq_index;
}
+static int vhost_net_set_vnet_endian(VirtIODevice *dev, NetClientState *peer,
+ bool set)
+{
+ int r = 0;
+
+ if (virtio_has_feature(dev, VIRTIO_F_VERSION_1) ||
+ (virtio_legacy_is_cross_endian(dev) && !virtio_is_big_endian(dev))) {
+ r = qemu_set_vnet_le(peer, set);
+ if (r) {
+ error_report("backend does not support LE vnet headers");
+ }
+ } else if (virtio_legacy_is_cross_endian(dev)) {
+ r = qemu_set_vnet_be(peer, set);
+ if (r) {
+ error_report("backend does not support BE vnet headers");
+ }
+ }
+
+ return r;
+}
+
static int vhost_net_start_one(struct vhost_net *net,
VirtIODevice *dev)
{
@@ -314,6 +336,11 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs,
goto err;
}
+ r = vhost_net_set_vnet_endian(dev, ncs[0].peer, true);
+ if (r < 0) {
+ goto err;
+ }
+
for (i = 0; i < total_queues; i++) {
vhost_net_set_vq_index(get_vhost_net(ncs[i].peer), i * 2);
}
@@ -321,7 +348,7 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs,
r = k->set_guest_notifiers(qbus->parent, total_queues * 2, true);
if (r < 0) {
error_report("Error binding guest notifier: %d", -r);
- goto err;
+ goto err_endian;
}
for (i = 0; i < total_queues; i++) {
@@ -343,6 +370,8 @@ err_start:
fprintf(stderr, "vhost guest notifier cleanup failed: %d\n", e);
fflush(stderr);
}
+err_endian:
+ vhost_net_set_vnet_endian(dev, ncs[0].peer, false);
err:
return r;
}
@@ -365,6 +394,8 @@ void vhost_net_stop(VirtIODevice *dev, NetClientState *ncs,
fflush(stderr);
}
assert(r >= 0);
+
+ assert(vhost_net_set_vnet_endian(dev, ncs[0].peer, false) >= 0);
}
void vhost_net_cleanup(struct vhost_net *net)