lib/libvirtio/virtio-net.h

/******************************************************************************
 * Copyright (c) 2011 IBM Corporation
 * All rights reserved.
 * This program and the accompanying materials
 * are made available under the terms of the BSD License
 * which accompanies this distribution, and is available at
 * http://www.opensource.org/licenses/bsd-license.php
 *
 * Contributors:
 *     IBM Corporation - initial implementation
 *****************************************************************************/

#ifndef VIRTIO_NET_H
#define VIRTIO_NET_H

#include <netdriver.h>

#define RX_QUEUE_SIZE		128
#define BUFFER_ENTRY_SIZE	1514

enum {
	VQ_RX = 0,	/* Receive Queue */
	VQ_TX = 1,	/* Transmit Queue */
};

struct vqs {
	uint64_t id;	/* Queue ID */
	uint32_t size;
	void *buf_mem;
	struct vring_desc *desc;
	struct vring_avail *avail;
	struct vring_used *used;
};

/* Device is identified by RX queue ID: */
#define DEVICE_ID  vq[0].id

extern net_driver_t *virtionet_open(char *mac_addr, int len, struct virtio_device *dev);
extern void virtionet_close(net_driver_t *driver);
extern int virtionet_read(char *buf, int len);
extern int virtionet_write(char *buf, int len);

#endif