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Commit 8b0a9d42 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
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virtio_net: document VIRTIO_NET_CTRL_GUEST_OFFLOADS 



Document VIRTIO_NET_CTRL_GUEST_OFFLOADS and the
relevant feature bits.

Will allow ethtool control of the offloads down the road.

Reported-by: default avatarYan Vugenfirer <yan@daynix.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 59a5b0f7

include/uapi/linux/virtio_net.h

+16 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ 
/* The feature bitmap for virtio net */

#define VIRTIO_NET_F_CSUM	0	/* Host handles pkts w/ partial csum */

#define VIRTIO_NET_F_GUEST_CSUM	1	/* Guest handles pkts w/ partial csum */

#define VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 2 /* Dynamic offload configuration. */

#define VIRTIO_NET_F_MAC	5	/* Host has given MAC address. */

#define VIRTIO_NET_F_GUEST_TSO4	7	/* Guest can handle TSOv4 in. */

#define VIRTIO_NET_F_GUEST_TSO6	8	/* Guest can handle TSOv6 in. */
@@ -226,4 +227,19 @@ struct virtio_net_ctrl_mq { 
 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN        1

 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX        0x8000



/*

 * Control network offloads

 *

 * Reconfigures the network offloads that Guest can handle.

 *

 * Available with the VIRTIO_NET_F_CTRL_GUEST_OFFLOADS feature bit.

 *

 * Command data format matches the feature bit mask exactly.

 *

 * See VIRTIO_NET_F_GUEST_* for the list of offloads

 * that can be enabled/disabled.

 */

#define VIRTIO_NET_CTRL_GUEST_OFFLOADS   5

#define VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET        0



#endif /* _LINUX_VIRTIO_NET_H */