examples/pipeline: fix build

[dpdk.git] / lib / vhost / rte_vhost.h

diff --git a/lib/vhost/rte_vhost.h b/lib/vhost/rte_vhost.h
index b454c05..4683a53 100644 (file)
--- a/lib/vhost/rte_vhost.h
+++ b/lib/vhost/rte_vhost.h
@@ -21,10 +21,12 @@
 extern "C" {
 #endif
 
+#ifndef __cplusplus
 /* These are not C++-aware. */
 #include <linux/vhost.h>
 #include <linux/virtio_ring.h>
 #include <linux/virtio_net.h>
+#endif
 
 #define RTE_VHOST_USER_CLIENT          (1ULL << 0)
 #define RTE_VHOST_USER_NO_RECONNECT    (1ULL << 1)
@@ -37,6 +39,7 @@ extern "C" {
 #define RTE_VHOST_USER_LINEARBUF_SUPPORT       (1ULL << 6)
 #define RTE_VHOST_USER_ASYNC_COPY      (1ULL << 7)
 #define RTE_VHOST_USER_NET_COMPLIANT_OL_FLAGS  (1ULL << 8)
+#define RTE_VHOST_USER_NET_STATS_ENABLE        (1ULL << 9)
 
 /* Features. */
 #ifndef VIRTIO_NET_F_GUEST_ANNOUNCE
@@ -113,6 +116,11 @@ extern "C" {
 #define VHOST_USER_F_PROTOCOL_FEATURES 30
 #endif
 
+#define RTE_MAX_VHOST_DEVICE   1024
+
+#define RTE_VHOST_VDPA_DEVICE_TYPE_NET 0
+#define RTE_VHOST_VDPA_DEVICE_TYPE_BLK 1
+
 struct rte_vdpa_device;
 
 /**
@@ -317,6 +325,32 @@ struct rte_vhost_power_monitor_cond {
        uint8_t match;
 };
 
+/** Maximum name length for the statistics counters */
+#define RTE_VHOST_STATS_NAME_SIZE 64
+
+/**
+ * Vhost virtqueue statistics structure
+ *
+ * This structure is used by rte_vhost_vring_stats_get() to provide
+ * virtqueue statistics to the calling application.
+ * It maps a name ID, corresponding to an index in the array returned
+ * by rte_vhost_vring_stats_get_names(), to a statistic value.
+ */
+struct rte_vhost_stat {
+       uint64_t id;    /**< The index in xstats name array. */
+       uint64_t value; /**< The statistic counter value. */
+};
+
+/**
+ * Vhost virtqueue statistic name element
+ *
+ * This structure is used by rte_vhost_vring_stats_get_names() to
+ * provide virtqueue statistics names to the calling application.
+ */
+struct rte_vhost_stat_name {
+       char name[RTE_VHOST_STATS_NAME_SIZE]; /**< The statistic name. */
+};
+
 /**
  * Convert guest physical address to host virtual address
  *
@@ -481,6 +515,20 @@ rte_vhost_driver_detach_vdpa_device(const char *path);
 struct rte_vdpa_device *
 rte_vhost_driver_get_vdpa_device(const char *path);
 
+/**
+ * Get the device type of the vdpa device.
+ *
+ * @param path
+ *  The vhost-user socket file path
+ * @param type
+ *  the device type of the vdpa device
+ * @return
+ *  0 on success, -1 on failure
+ */
+__rte_experimental
+int
+rte_vhost_driver_get_vdpa_dev_type(const char *path, uint32_t *type);
+
 /**
  * Set the feature bits the vhost-user driver supports.
  *
@@ -1059,6 +1107,78 @@ __rte_experimental
 int
 rte_vhost_slave_config_change(int vid, bool need_reply);
 
+/**
+ * Retrieve names of statistics of a Vhost virtqueue.
+ *
+ * There is an assumption that 'stat_names' and 'stats' arrays are matched
+ * by array index: stats_names[i].name => stats[i].value
+ *
+ * @param vid
+ *   vhost device ID
+ * @param queue_id
+ *   vhost queue index
+ * @param name
+ *   array of at least size elements to be filled.
+ *   If set to NULL, the function returns the required number of elements.
+ * @param size
+ *   The number of elements in stats_names array.
+ * @return
+ *  - Success if greater than 0 and lower or equal to *size*. The return value
+ *    indicates the number of elements filled in the *names* array.
+ *  - Failure if greater than *size*. The return value indicates the number of
+ *    elements the *names* array that should be given to succeed.
+ *  - Failure if lower than 0. The device ID or queue ID is invalid or
+ +    statistics collection is not enabled.
+ */
+__rte_experimental
+int
+rte_vhost_vring_stats_get_names(int vid, uint16_t queue_id,
+               struct rte_vhost_stat_name *name, unsigned int size);
+
+/**
+ * Retrieve statistics of a Vhost virtqueue.
+ *
+ * There is an assumption that 'stat_names' and 'stats' arrays are matched
+ * by array index: stats_names[i].name => stats[i].value
+ *
+ * @param vid
+ *   vhost device ID
+ * @param queue_id
+ *   vhost queue index
+ * @param stats
+ *   A pointer to a table of structure of type rte_vhost_stat to be filled with
+ *   virtqueue statistics ids and values.
+ * @param n
+ *   The number of elements in stats array.
+ * @return
+ *  - Success if greater than 0 and lower or equal to *n*. The return value
+ *    indicates the number of elements filled in the *stats* array.
+ *  - Failure if greater than *n*. The return value indicates the number of
+ *    elements the *stats* array that should be given to succeed.
+ *  - Failure if lower than 0. The device ID or queue ID is invalid, or
+ *    statistics collection is not enabled.
+ */
+__rte_experimental
+int
+rte_vhost_vring_stats_get(int vid, uint16_t queue_id,
+               struct rte_vhost_stat *stats, unsigned int n);
+
+/**
+ * Reset statistics of a Vhost virtqueue.
+ *
+ * @param vid
+ *   vhost device ID
+ * @param queue_id
+ *   vhost queue index
+ * @return
+ *  - Success if 0. Statistics have been reset.
+ *  - Failure if lower than 0. The device ID or queue ID is invalid, or
+ *    statistics collection is not enabled.
+ */
+__rte_experimental
+int
+rte_vhost_vring_stats_reset(int vid, uint16_t queue_id);
+
 #ifdef __cplusplus
 }
 #endif