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-rw-r--r--include/linux/vhost.h130
1 files changed, 0 insertions, 130 deletions
diff --git a/include/linux/vhost.h b/include/linux/vhost.h
deleted file mode 100644
index e847f1e30756..000000000000
--- a/include/linux/vhost.h
+++ /dev/null
@@ -1,130 +0,0 @@
-#ifndef _LINUX_VHOST_H
-#define _LINUX_VHOST_H
-/* Userspace interface for in-kernel virtio accelerators. */
-
-/* vhost is used to reduce the number of system calls involved in virtio.
- *
- * Existing virtio net code is used in the guest without modification.
- *
- * This header includes interface used by userspace hypervisor for
- * device configuration.
- */
-
-#include <linux/types.h>
-#include <linux/compiler.h>
-#include <linux/ioctl.h>
-#include <linux/virtio_config.h>
-#include <linux/virtio_ring.h>
-
-struct vhost_vring_state {
- unsigned int index;
- unsigned int num;
-};
-
-struct vhost_vring_file {
- unsigned int index;
- int fd; /* Pass -1 to unbind from file. */
-
-};
-
-struct vhost_vring_addr {
- unsigned int index;
- /* Option flags. */
- unsigned int flags;
- /* Flag values: */
- /* Whether log address is valid. If set enables logging. */
-#define VHOST_VRING_F_LOG 0
-
- /* Start of array of descriptors (virtually contiguous) */
- __u64 desc_user_addr;
- /* Used structure address. Must be 32 bit aligned */
- __u64 used_user_addr;
- /* Available structure address. Must be 16 bit aligned */
- __u64 avail_user_addr;
- /* Logging support. */
- /* Log writes to used structure, at offset calculated from specified
- * address. Address must be 32 bit aligned. */
- __u64 log_guest_addr;
-};
-
-struct vhost_memory_region {
- __u64 guest_phys_addr;
- __u64 memory_size; /* bytes */
- __u64 userspace_addr;
- __u64 flags_padding; /* No flags are currently specified. */
-};
-
-/* All region addresses and sizes must be 4K aligned. */
-#define VHOST_PAGE_SIZE 0x1000
-
-struct vhost_memory {
- __u32 nregions;
- __u32 padding;
- struct vhost_memory_region regions[0];
-};
-
-/* ioctls */
-
-#define VHOST_VIRTIO 0xAF
-
-/* Features bitmask for forward compatibility. Transport bits are used for
- * vhost specific features. */
-#define VHOST_GET_FEATURES _IOR(VHOST_VIRTIO, 0x00, __u64)
-#define VHOST_SET_FEATURES _IOW(VHOST_VIRTIO, 0x00, __u64)
-
-/* Set current process as the (exclusive) owner of this file descriptor. This
- * must be called before any other vhost command. Further calls to
- * VHOST_OWNER_SET fail until VHOST_OWNER_RESET is called. */
-#define VHOST_SET_OWNER _IO(VHOST_VIRTIO, 0x01)
-/* Give up ownership, and reset the device to default values.
- * Allows subsequent call to VHOST_OWNER_SET to succeed. */
-#define VHOST_RESET_OWNER _IO(VHOST_VIRTIO, 0x02)
-
-/* Set up/modify memory layout */
-#define VHOST_SET_MEM_TABLE _IOW(VHOST_VIRTIO, 0x03, struct vhost_memory)
-
-/* Write logging setup. */
-/* Memory writes can optionally be logged by setting bit at an offset
- * (calculated from the physical address) from specified log base.
- * The bit is set using an atomic 32 bit operation. */
-/* Set base address for logging. */
-#define VHOST_SET_LOG_BASE _IOW(VHOST_VIRTIO, 0x04, __u64)
-/* Specify an eventfd file descriptor to signal on log write. */
-#define VHOST_SET_LOG_FD _IOW(VHOST_VIRTIO, 0x07, int)
-
-/* Ring setup. */
-/* Set number of descriptors in ring. This parameter can not
- * be modified while ring is running (bound to a device). */
-#define VHOST_SET_VRING_NUM _IOW(VHOST_VIRTIO, 0x10, struct vhost_vring_state)
-/* Set addresses for the ring. */
-#define VHOST_SET_VRING_ADDR _IOW(VHOST_VIRTIO, 0x11, struct vhost_vring_addr)
-/* Base value where queue looks for available descriptors */
-#define VHOST_SET_VRING_BASE _IOW(VHOST_VIRTIO, 0x12, struct vhost_vring_state)
-/* Get accessor: reads index, writes value in num */
-#define VHOST_GET_VRING_BASE _IOWR(VHOST_VIRTIO, 0x12, struct vhost_vring_state)
-
-/* The following ioctls use eventfd file descriptors to signal and poll
- * for events. */
-
-/* Set eventfd to poll for added buffers */
-#define VHOST_SET_VRING_KICK _IOW(VHOST_VIRTIO, 0x20, struct vhost_vring_file)
-/* Set eventfd to signal when buffers have beed used */
-#define VHOST_SET_VRING_CALL _IOW(VHOST_VIRTIO, 0x21, struct vhost_vring_file)
-/* Set eventfd to signal an error */
-#define VHOST_SET_VRING_ERR _IOW(VHOST_VIRTIO, 0x22, struct vhost_vring_file)
-
-/* VHOST_NET specific defines */
-
-/* Attach virtio net ring to a raw socket, or tap device.
- * The socket must be already bound to an ethernet device, this device will be
- * used for transmit. Pass fd -1 to unbind from the socket and the transmit
- * device. This can be used to stop the ring (e.g. for migration). */
-#define VHOST_NET_SET_BACKEND _IOW(VHOST_VIRTIO, 0x30, struct vhost_vring_file)
-
-/* Feature bits */
-/* Log all write descriptors. Can be changed while device is active. */
-#define VHOST_F_LOG_ALL 26
-/* vhost-net should add virtio_net_hdr for RX, and strip for TX packets. */
-#define VHOST_NET_F_VIRTIO_NET_HDR 27
-
-#endif