9a78a5dd27
Send the shm for the dirty pages logging if the backend supports VHOST_USER_PROTOCOL_F_LOG_SHMFD. Wait for a reply to make sure the old log is no longer used. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Thibaut Collet <thibaut.collet@6wind.com>
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/*
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* vhost-backend
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*
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* Copyright (c) 2013 Virtual Open Systems Sarl.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef VHOST_BACKEND_H_
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#define VHOST_BACKEND_H_
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#include <stdbool.h>
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typedef enum VhostBackendType {
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VHOST_BACKEND_TYPE_NONE = 0,
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VHOST_BACKEND_TYPE_KERNEL = 1,
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VHOST_BACKEND_TYPE_USER = 2,
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VHOST_BACKEND_TYPE_MAX = 3,
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} VhostBackendType;
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struct vhost_dev;
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struct vhost_log;
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typedef int (*vhost_call)(struct vhost_dev *dev, unsigned long int request,
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void *arg);
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typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque);
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typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev);
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typedef int (*vhost_backend_get_vq_index)(struct vhost_dev *dev, int idx);
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typedef int (*vhost_backend_set_vring_enable)(struct vhost_dev *dev, int enable);
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typedef int (*vhost_backend_memslots_limit)(struct vhost_dev *dev);
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typedef int (*vhost_set_log_base_op)(struct vhost_dev *dev, uint64_t base,
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struct vhost_log *log);
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typedef bool (*vhost_requires_shm_log_op)(struct vhost_dev *dev);
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typedef struct VhostOps {
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VhostBackendType backend_type;
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vhost_call vhost_call;
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vhost_backend_init vhost_backend_init;
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vhost_backend_cleanup vhost_backend_cleanup;
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vhost_backend_get_vq_index vhost_backend_get_vq_index;
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vhost_backend_set_vring_enable vhost_backend_set_vring_enable;
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vhost_backend_memslots_limit vhost_backend_memslots_limit;
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vhost_set_log_base_op vhost_set_log_base;
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vhost_requires_shm_log_op vhost_requires_shm_log;
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} VhostOps;
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extern const VhostOps user_ops;
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int vhost_set_backend_type(struct vhost_dev *dev,
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VhostBackendType backend_type);
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#endif /* VHOST_BACKEND_H_ */
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