include: update Linux headers to 4.21-rc1/5.0-rc1

[mirror_qemu.git] / linux-headers / linux / vhost.h

diff --git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
index 165a4848c6c85762a2cae5ec9d5347b96b64937f..40d028eed645954cbc3e4699aa2c353be371ce7f 100644 (file)
--- a/linux-headers/linux/vhost.h
+++ b/linux-headers/linux/vhost.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 #ifndef _LINUX_VHOST_H
 #define _LINUX_VHOST_H
 /* Userspace interface for in-kernel virtio accelerators. */
@@ -10,58 +11,9 @@
  * device configuration.
  */
 
+#include <linux/vhost_types.h>
 #include <linux/types.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 */
 
@@ -103,6 +55,20 @@ struct vhost_memory {
 /* Get accessor: reads index, writes value in num */
 #define VHOST_GET_VRING_BASE _IOWR(VHOST_VIRTIO, 0x12, struct vhost_vring_state)
 
+/* Set the vring byte order in num. Valid values are VHOST_VRING_LITTLE_ENDIAN
+ * or VHOST_VRING_BIG_ENDIAN (other values return -EINVAL).
+ * The byte order cannot be changed while the device is active: trying to do so
+ * returns -EBUSY.
+ * This is a legacy only API that is simply ignored when VIRTIO_F_VERSION_1 is
+ * set.
+ * Not all kernel configurations support this ioctl, but all configurations that
+ * support SET also support GET.
+ */
+#define VHOST_VRING_LITTLE_ENDIAN 0
+#define VHOST_VRING_BIG_ENDIAN 1
+#define VHOST_SET_VRING_ENDIAN _IOW(VHOST_VIRTIO, 0x13, struct vhost_vring_state)
+#define VHOST_GET_VRING_ENDIAN _IOW(VHOST_VIRTIO, 0x14, struct vhost_vring_state)
+
 /* The following ioctls use eventfd file descriptors to signal and poll
  * for events. */
 
@@ -112,6 +78,20 @@ struct vhost_memory {
 #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)
+/* Set busy loop timeout (in us) */
+#define VHOST_SET_VRING_BUSYLOOP_TIMEOUT _IOW(VHOST_VIRTIO, 0x23,      \
+                                        struct vhost_vring_state)
+/* Get busy loop timeout (in us) */
+#define VHOST_GET_VRING_BUSYLOOP_TIMEOUT _IOW(VHOST_VIRTIO, 0x24,      \
+                                        struct vhost_vring_state)
+
+/* Set or get vhost backend capability */
+
+/* Use message type V2 */
+#define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1
+
+#define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64)
+#define VHOST_GET_BACKEND_FEATURES _IOR(VHOST_VIRTIO, 0x26, __u64)
 
 /* VHOST_NET specific defines */
 
@@ -121,10 +101,19 @@ struct vhost_memory {
  * 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
+/* VHOST_SCSI specific defines */
+
+#define VHOST_SCSI_SET_ENDPOINT _IOW(VHOST_VIRTIO, 0x40, struct vhost_scsi_target)
+#define VHOST_SCSI_CLEAR_ENDPOINT _IOW(VHOST_VIRTIO, 0x41, struct vhost_scsi_target)
+/* Changing this breaks userspace. */
+#define VHOST_SCSI_GET_ABI_VERSION _IOW(VHOST_VIRTIO, 0x42, int)
+/* Set and get the events missed flag */
+#define VHOST_SCSI_SET_EVENTS_MISSED _IOW(VHOST_VIRTIO, 0x43, __u32)
+#define VHOST_SCSI_GET_EVENTS_MISSED _IOW(VHOST_VIRTIO, 0x44, __u32)
+
+/* VHOST_VSOCK specific defines */
+
+#define VHOST_VSOCK_SET_GUEST_CID      _IOW(VHOST_VIRTIO, 0x60, __u64)
+#define VHOST_VSOCK_SET_RUNNING                _IOW(VHOST_VIRTIO, 0x61, int)
 
 #endif