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[virtio] Add virtio 1.0 constants and data structures

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Virtio 1.0 introduces new constants and data structures, common to all
devices as well as specific to virtio-net.  This commit adds a subset
of these to be able to drive the virtio-net 1.0 network device.

Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Ladi Prosek
2016-04-11 11:26:57 +02:00
committed by Michael Brown
parent 2379494918
commit 7b499f849e
3 changed files with 84 additions and 0 deletions
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16
src/drivers/net/virtio-net.h
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@@ -14,6 +14,12 @@
#define VIRTIO_NET_F_HOST_TSO6 12 /* Host can handle TSOv6 in. */
#define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */
#define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */
#define VIRTIO_NET_F_MRG_RXBUF 15 /* Driver can merge receive buffers. */
#define VIRTIO_NET_F_STATUS 16 /* Configuration status field is available. */
#define VIRTIO_NET_F_CTRL_VQ 17 /* Control channel is available. */
#define VIRTIO_NET_F_CTRL_RX 18 /* Control channel RX mode support. */
#define VIRTIO_NET_F_CTRL_VLAN 19 /* Control channel VLAN filtering. */
#define VIRTIO_NET_F_GUEST_ANNOUNCE 21 /* Driver can send gratuitous packets. */
struct virtio_net_config
{
@@ -41,4 +47,14 @@ struct virtio_net_hdr
uint16_t csum_start;
uint16_t csum_offset;
};
/* Virtio 1.0 version of the first element of the scatter-gather list. */
struct virtio_net_hdr_modern
{
struct virtio_net_hdr legacy;
/* Used only if VIRTIO_NET_F_MRG_RXBUF: */
uint16_t num_buffers;
};
#endif /* _VIRTIO_NET_H_ */