Function vhost_alloc_copy_ind_table

dpdk/lib/vhost/vhost.c:306–337

}

void *
vhost_alloc_copy_ind_table(struct virtio_net *dev, struct vhost_virtqueue *vq,
		uint64_t desc_addr, uint64_t desc_len)
{
	void *idesc;
	uint64_t src, dst;
	uint64_t len, remain = desc_len;

	idesc = rte_malloc_socket(__func__, desc_len, 0, vq->numa_node);
	if (unlikely(!idesc))
		return NULL;

	dst = (uint64_t)(uintptr_t)idesc;

	while (remain) {
		len = remain;
		src = vhost_iova_to_vva(dev, vq, desc_addr, &len,
				VHOST_ACCESS_RO);
		if (unlikely(!src || !len)) {
			rte_free(idesc);
			return NULL;
		}

		rte_memcpy((void *)(uintptr_t)dst, (void *)(uintptr_t)src, len);

		remain -= len;
		dst += len;
		desc_addr += len;
	}

	return idesc;
}

void
cleanup_vq(struct vhost_virtqueue *vq, int destroy)