#include "../virtio_logs.h"
#include "../virtqueue.h"
-#define VHOST_MEMORY_MAX_NREGIONS 8
-
struct vhost_vring_state {
unsigned int index;
unsigned int num;
VHOST_USER_MAX
};
+const char * const vhost_msg_strings[VHOST_USER_MAX];
+
struct vhost_memory_region {
uint64_t guest_phys_addr;
uint64_t memory_size; /* bytes */
uint64_t mmap_offset;
};
-struct vhost_memory {
- uint32_t nregions;
- uint32_t padding;
- struct vhost_memory_region regions[VHOST_MEMORY_MAX_NREGIONS];
-};
-
-struct vhost_user_msg {
- enum vhost_user_request request;
-
-#define VHOST_USER_VERSION_MASK 0x3
-#define VHOST_USER_REPLY_MASK (0x1 << 2)
- uint32_t flags;
- uint32_t size; /* the following payload size */
- union {
-#define VHOST_USER_VRING_IDX_MASK 0xff
-#define VHOST_USER_VRING_NOFD_MASK (0x1 << 8)
- uint64_t u64;
- struct vhost_vring_state state;
- struct vhost_vring_addr addr;
- struct vhost_memory memory;
- } payload;
- int fds[VHOST_MEMORY_MAX_NREGIONS];
-} __attribute((packed));
+struct virtio_user_dev;
-#define VHOST_USER_HDR_SIZE offsetof(struct vhost_user_msg, payload.u64)
-#define VHOST_USER_PAYLOAD_SIZE \
- (sizeof(struct vhost_user_msg) - VHOST_USER_HDR_SIZE)
+struct virtio_user_backend_ops {
+ int (*setup)(struct virtio_user_dev *dev);
+ int (*send_request)(struct virtio_user_dev *dev,
+ enum vhost_user_request req,
+ void *arg);
+ int (*enable_qp)(struct virtio_user_dev *dev,
+ uint16_t pair_idx,
+ int enable);
+};
-/* The version of the protocol we support */
-#define VHOST_USER_VERSION 0x1
+struct virtio_user_backend_ops ops_user;
+struct virtio_user_backend_ops ops_kernel;
-int vhost_user_sock(int vhostfd, uint64_t req, void *arg);
-int vhost_user_setup(const char *path);
#endif