1 files changed, 13 insertions, 0 deletions

diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
index fc353b518288..5de6ed37695b 100644
--- a/include/uapi/linux/virtio_net.h
+++ b/include/uapi/linux/virtio_net.h
@@ -57,6 +57,8 @@
                                          * Steering */
 #define VIRTIO_NET_F_CTRL_MAC_ADDR 23   /* Set MAC address */
 
+#define VIRTIO_NET_F_SPEED_DUPLEX 63    /* Device set linkspeed and duplex */
+
 #ifndef VIRTIO_NET_NO_LEGACY
 #define VIRTIO_NET_F_GSO        6       /* Host handles pkts w/ any GSO type */
 #endif /* VIRTIO_NET_NO_LEGACY */
@@ -76,6 +78,17 @@ struct virtio_net_config {
         __u16 max_virtqueue_pairs;
         /* Default maximum transmit unit advice */
         __u16 mtu;
+        /*
+         * speed, in units of 1Mb. All values 0 to INT_MAX are legal.
+         * Any other value stands for unknown.
+         */
+        __u32 speed;
+        /*
+         * 0x00 - half duplex
+         * 0x01 - full duplex
+         * Any other value stands for unknown.
+         */
+        __u8 duplex;
 } __attribute__((packed));
 
 /*