// SPDX-License-Identifier: GPL-2.0-or-later
/* Copyright Red Hat
 * Author: Laurent Vivier <lvivier@redhat.com>
 *
 * common_vu.c - vhost-user common UDP and TCP functions
 */

#include <unistd.h>
#include <sys/uio.h>
#include <linux/virtio_net.h>

#include "util.h"
#include "passt.h"
#include "vhost_user.h"
#include "vu_common.h"

/**
 * vu_send_frame() - Send one frame to the vhost-user interface
 * @vdev:	vhost-user device
 * @vq:		vhost-user virtqueue
 * @elem:	virtqueue element array to send back to the virqueue
 * @iov_vu:	iovec array containing the data to send
 * @iov_used:	Length of the array
 */
void vu_send_frame(const struct vu_dev *vdev, struct vu_virtq *vq,
		   struct vu_virtq_element *elem, const struct iovec *iov_vu,
		   int iov_used)
{
	int i;

	for (i = 0; i < iov_used; i++)
		vu_queue_fill(vq, &elem[i], iov_vu[i].iov_len, i);

	vu_queue_flush(vq, iov_used);
	vu_queue_notify(vdev, vq);
}