#ifndef _LINUX_VIRTIO_CONFIG_H
#define _LINUX_VIRTIO_CONFIG_H
+/* This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
+ * anyone can use the definitions to implement compatible drivers/servers. */
+
/* Virtio devices use a standardized configuration space to define their
* features and pass configuration information, but each implementation can
* store and access that space differently. */
/* We've given up on this device. */
#define VIRTIO_CONFIG_S_FAILED 0x80
+/* Do we get callbacks when the ring is completely used, even if we've
+ * suppressed them? */
+#define VIRTIO_F_NOTIFY_ON_EMPTY 24
+
#ifdef __KERNEL__
#include <linux/virtio.h>
* The return value is -ENOENT if the feature doesn't exist. Otherwise
* the config value is copied into whatever is pointed to by v. */
#define virtio_config_val(vdev, fbit, offset, v) \
- virtio_config_buf((vdev), (fbit), (offset), (v), sizeof(v))
+ virtio_config_buf((vdev), (fbit), (offset), (v), sizeof(*v))
static inline int virtio_config_buf(struct virtio_device *vdev,
unsigned int fbit,