u32 speed;
unsigned long guest_offloads;
+ unsigned long guest_offloads_capable;
/* failover when STANDBY feature enabled */
struct failover *failover;
return 0;
}
+static int virtnet_set_features(struct net_device *dev,
+ netdev_features_t features)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ u64 offloads;
+ int err;
+
+ if ((dev->features ^ features) & NETIF_F_LRO) {
+ if (vi->xdp_queue_pairs)
+ return -EBUSY;
+
+ if (features & NETIF_F_LRO)
+ offloads = vi->guest_offloads_capable;
+ else
+ offloads = 0;
+
+ err = virtnet_set_guest_offloads(vi, offloads);
+ if (err)
+ return err;
+ vi->guest_offloads = offloads;
+ }
+
+ return 0;
+}
+
static const struct net_device_ops virtnet_netdev = {
.ndo_open = virtnet_open,
.ndo_stop = virtnet_close,
.ndo_xdp_xmit = virtnet_xdp_xmit,
.ndo_features_check = passthru_features_check,
.ndo_get_phys_port_name = virtnet_get_phys_port_name,
+ .ndo_set_features = virtnet_set_features,
};
static void virtnet_config_changed_work(struct work_struct *work)
}
if (virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_CSUM))
dev->features |= NETIF_F_RXCSUM;
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO4) ||
+ virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO6))
+ dev->features |= NETIF_F_LRO;
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS))
+ dev->hw_features |= NETIF_F_LRO;
dev->vlan_features = dev->features;
for (i = 0; i < ARRAY_SIZE(guest_offloads); i++)
if (virtio_has_feature(vi->vdev, guest_offloads[i]))
set_bit(guest_offloads[i], &vi->guest_offloads);
+ vi->guest_offloads_capable = vi->guest_offloads;
pr_debug("virtnet: registered device %s with %d RX and TX vq's\n",
dev->name, max_queue_pairs);