vhost: fix build on RHEL 7.6 for Power

[dpdk.git] / lib / librte_vhost / rte_vdpa.h

diff --git a/lib/librte_vhost/rte_vdpa.h b/lib/librte_vhost/rte_vdpa.h
index 90465ca..9a3deb3 100644 (file)
--- a/lib/librte_vhost/rte_vdpa.h
+++ b/lib/librte_vhost/rte_vdpa.h
@@ -11,6 +11,8 @@
  * Device specific vhost lib
  */
 
+#include <stdbool.h>
+
 #include <rte_pci.h>
 #include "rte_vhost.h"
 
@@ -21,67 +23,181 @@ enum vdpa_addr_type {
        VDPA_ADDR_MAX
 };
 
+/**
+ * vdpa device address
+ */
 struct rte_vdpa_dev_addr {
+       /** vdpa address type */
        enum vdpa_addr_type type;
+
+       /** vdpa pci address */
        union {
                uint8_t __dummy[64];
                struct rte_pci_addr pci_addr;
        };
 };
 
+/**
+ * vdpa device operations
+ */
 struct rte_vdpa_dev_ops {
-       /* Get capabilities of this device */
+       /** Get capabilities of this device */
        int (*get_queue_num)(int did, uint32_t *queue_num);
+
+       /** Get supported features of this device */
        int (*get_features)(int did, uint64_t *features);
+
+       /** Get supported protocol features of this device */
        int (*get_protocol_features)(int did, uint64_t *protocol_features);
 
-       /* Driver configure/close the device */
+       /** Driver configure/close the device */
        int (*dev_conf)(int vid);
        int (*dev_close)(int vid);
 
-       /* Enable/disable this vring */
+       /** Enable/disable this vring */
        int (*set_vring_state)(int vid, int vring, int state);
 
-       /* Set features when changed */
+       /** Set features when changed */
        int (*set_features)(int vid);
 
-       /* Destination operations when migration done */
+       /** Destination operations when migration done */
        int (*migration_done)(int vid);
 
-       /* Get the vfio group fd */
+       /** Get the vfio group fd */
        int (*get_vfio_group_fd)(int vid);
 
-       /* Get the vfio device fd */
+       /** Get the vfio device fd */
        int (*get_vfio_device_fd)(int vid);
 
-       /* Get the notify area info of the queue */
+       /** Get the notify area info of the queue */
        int (*get_notify_area)(int vid, int qid,
                        uint64_t *offset, uint64_t *size);
 
-       /* Reserved for future extension */
+       /** Reserved for future extension */
        void *reserved[5];
 };
 
+/**
+ * vdpa device structure includes device address and device operations.
+ */
 struct rte_vdpa_device {
+       /** vdpa device address */
        struct rte_vdpa_dev_addr addr;
+       /** vdpa device operations */
        struct rte_vdpa_dev_ops *ops;
 } __rte_cache_aligned;
 
-/* Register a vdpa device, return did if successful, -1 on failure */
-int __rte_experimental
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Register a vdpa device
+ *
+ * @param addr
+ *  the vdpa device address
+ * @param ops
+ *  the vdpa device operations
+ * @return
+ *  device id on success, -1 on failure
+ */
+__rte_experimental
+int
 rte_vdpa_register_device(struct rte_vdpa_dev_addr *addr,
                struct rte_vdpa_dev_ops *ops);
 
-/* Unregister a vdpa device, return -1 on failure */
-int __rte_experimental
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Unregister a vdpa device
+ *
+ * @param did
+ *  vdpa device id
+ * @return
+ *  device id on success, -1 on failure
+ */
+__rte_experimental
+int
 rte_vdpa_unregister_device(int did);
 
-/* Find did of a vdpa device, return -1 on failure */
-int __rte_experimental
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Find the device id of a vdpa device
+ *
+ * @param addr
+ *  the vdpa device address
+ * @return
+ *  device id on success, -1 on failure
+ */
+__rte_experimental
+int
 rte_vdpa_find_device_id(struct rte_vdpa_dev_addr *addr);
 
-/* Find a vdpa device based on did */
-struct rte_vdpa_device * __rte_experimental
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Find a vdpa device based on device id
+ *
+ * @param did
+ *  device id
+ * @return
+ *  rte_vdpa_device on success, NULL on failure
+ */
+__rte_experimental
+struct rte_vdpa_device *
 rte_vdpa_get_device(int did);
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Get current available vdpa device number
+ *
+ * @return
+ *  available vdpa device number
+ */
+__rte_experimental
+int
+rte_vdpa_get_device_num(void);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Enable/Disable host notifier mapping for a vdpa port.
+ *
+ * @param vid
+ *  vhost device id
+ * @param enable
+ *  true for host notifier map, false for host notifier unmap
+ * @return
+ *  0 on success, -1 on failure
+ */
+__rte_experimental
+int
+rte_vhost_host_notifier_ctrl(int vid, bool enable);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Synchronize the used ring from mediated ring to guest, log dirty
+ * page for each writeable buffer, caller should handle the used
+ * ring logging before device stop.
+ *
+ * @param vid
+ *  vhost device id
+ * @param qid
+ *  vhost queue id
+ * @param vring_m
+ *  mediated virtio ring pointer
+ * @return
+ *  number of synced used entries on success, -1 on failure
+ */
+__rte_experimental
+int
+rte_vdpa_relay_vring_used(int vid, uint16_t qid, void *vring_m);
 #endif /* _RTE_VDPA_H_ */