hw/net/virtio-net: Remove VirtIONet::mtu_bypass_backend field
The VirtIONet::mtu_bypass_backend boolean was only set in the hw_compat_2_9[] array, via the 'x-mtu-bypass-backend=off' property. We removed all machines using that array, lets remove that property and all the code around it. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20250501210456.89071-17-philmd@linaro.org> Reviewed-by: Igor Mammedov <imammedo@redhat.com> [thuth: Adjusted patch for latest changes in the master branch] Signed-off-by: Thomas Huth <thuth@redhat.com> Message-ID: <20260225092024.794595-14-thuth@redhat.com>
Philippe Mathieu-Daudé committed
Feb 25, 2026 at 10:20 UTC
9b960bbc1361b2ab24022faa4957438c385dbc6e
2 files changed
+2
-7
hw/net/virtio-net.c
+2
-6
@@ -935,8 +935,7 @@ static void virtio_net_set_features(VirtIODevice *vdev,
935
int i;
936
937
virtio_features_copy(features, in_features);
938
- if (n->mtu_bypass_backend &&
939
- !virtio_has_feature(vdev->backend_features, VIRTIO_NET_F_MTU)) {
938
+ if (!virtio_has_feature(vdev->backend_features, VIRTIO_NET_F_MTU)) {
939
virtio_clear_feature_ex(features, VIRTIO_NET_F_MTU);
940
}
941
@@ -3160,8 +3159,7 @@ static void virtio_net_get_features(VirtIODevice *vdev, uint64_t *features,
3159
vhost_net_get_features_ex(get_vhost_net(nc->peer), features);
3160
virtio_features_copy(vdev->backend_features_ex, features);
3161
3163
- if (n->mtu_bypass_backend &&
3164
- (n->host_features & 1ULL << VIRTIO_NET_F_MTU)) {
3162
+ if ((n->host_features & 1ULL << VIRTIO_NET_F_MTU) != 0) {
3163
virtio_add_feature_ex(features, VIRTIO_NET_F_MTU);
3164
}
3165
@@ -4251,8 +4249,6 @@ static const Property virtio_net_properties[] = {
4249
DEFINE_PROP_UINT16("tx_queue_size", VirtIONet, net_conf.tx_queue_size,
4250
VIRTIO_NET_TX_QUEUE_DEFAULT_SIZE),
4251
DEFINE_PROP_UINT16("host_mtu", VirtIONet, net_conf.mtu, 0),
4254
- DEFINE_PROP_BOOL("x-mtu-bypass-backend", VirtIONet, mtu_bypass_backend,
4255
- true),
4252
DEFINE_PROP_INT32("speed", VirtIONet, net_conf.speed, SPEED_UNKNOWN),
4253
DEFINE_PROP_STRING("duplex", VirtIONet, net_conf.duplex_str),
4254
DEFINE_PROP_BOOL("failover", VirtIONet, failover, false),
include/hw/virtio/virtio-net.h
-1
@@ -218,7 +218,6 @@ struct VirtIONet {
218
uint64_t saved_guest_offloads;
219
AnnounceTimer announce_timer;
220
bool needs_vnet_hdr_swap;
221
- bool mtu_bypass_backend;
221
/* primary failover device is hidden*/
222
bool failover_primary_hidden;
223
bool failover;