summaryrefslogtreecommitdiff
path: root/drivers/vhost/vhost.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/vhost/vhost.h')
-rw-r--r--drivers/vhost/vhost.h32
1 files changed, 4 insertions, 28 deletions
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 17261e277c02..b58f4ae82cb8 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -54,18 +54,6 @@ struct vhost_log {
struct vhost_virtqueue;
-struct vhost_ubuf_ref {
- struct kref kref;
- wait_queue_head_t wait;
- struct vhost_virtqueue *vq;
-};
-
-struct vhost_ubuf_ref *vhost_ubuf_alloc(struct vhost_virtqueue *, bool zcopy);
-void vhost_ubuf_put(struct vhost_ubuf_ref *);
-void vhost_ubuf_put_and_wait(struct vhost_ubuf_ref *);
-
-struct ubuf_info;
-
/* The virtqueue structure describes a queue attached to a device. */
struct vhost_virtqueue {
struct vhost_dev *dev;
@@ -114,10 +102,7 @@ struct vhost_virtqueue {
/* hdr is used to store the virtio header.
* Since each iovec has >= 1 byte length, we never need more than
* header length entries to store the header. */
- struct iovec hdr[sizeof(struct virtio_net_hdr_mrg_rxbuf)];
struct iovec *indirect;
- size_t vhost_hlen;
- size_t sock_hlen;
struct vring_used_elem *heads;
/* We use a kind of RCU to access private pointer.
* All readers access it from worker, which makes it possible to
@@ -130,16 +115,6 @@ struct vhost_virtqueue {
/* Log write descriptors */
void __user *log_base;
struct vhost_log *log;
- /* vhost zerocopy support fields below: */
- /* last used idx for outstanding DMA zerocopy buffers */
- int upend_idx;
- /* first used idx for DMA done zerocopy buffers */
- int done_idx;
- /* an array of userspace buffers info */
- struct ubuf_info *ubuf_info;
- /* Reference counting for outstanding ubufs.
- * Protected by vq mutex. Writers must also take device mutex. */
- struct vhost_ubuf_ref *ubufs;
};
struct vhost_dev {
@@ -150,7 +125,7 @@ struct vhost_dev {
struct mm_struct *mm;
struct mutex mutex;
unsigned acked_features;
- struct vhost_virtqueue *vqs;
+ struct vhost_virtqueue **vqs;
int nvqs;
struct file *log_file;
struct eventfd_ctx *log_ctx;
@@ -159,9 +134,10 @@ struct vhost_dev {
struct task_struct *worker;
};
-long vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue *vqs, int nvqs);
+long vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs, int nvqs);
long vhost_dev_check_owner(struct vhost_dev *);
-long vhost_dev_reset_owner(struct vhost_dev *);
+struct vhost_memory *vhost_dev_reset_owner_prepare(void);
+void vhost_dev_reset_owner(struct vhost_dev *, struct vhost_memory *);
void vhost_dev_cleanup(struct vhost_dev *, bool locked);
void vhost_dev_stop(struct vhost_dev *);
long vhost_dev_ioctl(struct vhost_dev *, unsigned int ioctl, void __user *argp);