devargs: make device representation generic

[dpdk.git] / lib / librte_eal / common / include / rte_vdev.h

diff --git a/lib/librte_eal/common/include/rte_vdev.h b/lib/librte_eal/common/include/rte_vdev.h
index 48f71b7..3c07b76 100644 (file)
--- a/lib/librte_eal/common/include/rte_vdev.h
+++ b/lib/librte_eal/common/include/rte_vdev.h
@@ -1,8 +1,7 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright(c) 2014 6WIND S.A.
- *   All rights reserved.
+ *   Copyright(c) 2016 RehiveTech. All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
@@ -14,7 +13,7 @@
  *       notice, this list of conditions and the following disclaimer in
  *       the documentation and/or other materials provided with the
  *       distribution.
- *     * Neither the name of 6WIND S.A. nor the names of its
+ *     * Neither the name of RehiveTech nor the names of its
  *       contributors may be used to endorse or promote products derived
  *       from this software without specific prior written permission.
  *
@@ -31,60 +30,95 @@
  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef _RTE_VDEV_H_
-#define _RTE_VDEV_H_
-
-/**
- * @file
- *
- * RTE Virtual Devices Interface
- *
- * This file manages the list of the virtual device drivers.
- */
+#ifndef RTE_VDEV_H
+#define RTE_VDEV_H
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #include <sys/queue.h>
+#include <rte_dev.h>
+#include <rte_devargs.h>
+
+struct rte_vdev_device {
+       TAILQ_ENTRY(rte_vdev_device) next;      /**< Next attached vdev */
+       struct rte_device device;               /**< Inherit core device */
+};
+
+static inline const char *
+rte_vdev_device_name(const struct rte_vdev_device *dev)
+{
+       if (dev && dev->device.devargs)
+               return dev->device.devargs->name;
+       return NULL;
+}
+
+static inline const char *
+rte_vdev_device_args(const struct rte_vdev_device *dev)
+{
+       if (dev && dev->device.devargs)
+               return dev->device.devargs->args;
+       return "";
+}
 
 /** Double linked list of virtual device drivers. */
-TAILQ_HEAD(rte_vdev_driver_list, rte_vdev_driver);
+TAILQ_HEAD(vdev_driver_list, rte_vdev_driver);
+
+/**
+ * Probe function called for each virtual device driver once.
+ */
+typedef int (rte_vdev_probe_t)(struct rte_vdev_device *dev);
 
 /**
- * Initialization function called for each virtual device probing.
+ * Remove function called for each virtual device driver once.
  */
-typedef int (rte_vdev_init_t)(const char *name, const char *args);
+typedef int (rte_vdev_remove_t)(struct rte_vdev_device *dev);
 
 /**
- * A structure describing a virtual device driver.
+ * A virtual device driver abstraction.
  */
 struct rte_vdev_driver {
-       TAILQ_ENTRY(rte_vdev_driver) next;  /**< Next in list. */
-       const char *name;                   /**< Driver name. */
-       rte_vdev_init_t *init;              /**< Device init. function. */
+       TAILQ_ENTRY(rte_vdev_driver) next; /**< Next in list. */
+       struct rte_driver driver;      /**< Inherited general driver. */
+       rte_vdev_probe_t *probe;       /**< Virtual device probe function. */
+       rte_vdev_remove_t *remove;     /**< Virtual device remove function. */
 };
 
 /**
  * Register a virtual device driver.
  *
  * @param driver
- *   A pointer to a rte_vdev structure describing the driver
+ *   A pointer to a rte_vdev_driver structure describing the driver
  *   to be registered.
  */
-void rte_eal_vdev_driver_register(struct rte_vdev_driver *driver);
+void rte_vdev_register(struct rte_vdev_driver *driver);
 
 /**
  * Unregister a virtual device driver.
  *
  * @param driver
- *   A pointer to a rte_vdev structure describing the driver
+ *   A pointer to a rte_vdev_driver structure describing the driver
  *   to be unregistered.
  */
-void rte_eal_vdev_driver_unregister(struct rte_vdev_driver *driver);
+void rte_vdev_unregister(struct rte_vdev_driver *driver);
+
+#define RTE_PMD_REGISTER_VDEV(nm, vdrv)\
+RTE_INIT(vdrvinitfn_ ##vdrv);\
+static const char *vdrvinit_ ## nm ## _alias;\
+static void vdrvinitfn_ ##vdrv(void)\
+{\
+       (vdrv).driver.name = RTE_STR(nm);\
+       (vdrv).driver.alias = vdrvinit_ ## nm ## _alias;\
+       rte_vdev_register(&vdrv);\
+} \
+RTE_PMD_EXPORT_NAME(nm, __COUNTER__)
+
+#define RTE_PMD_REGISTER_ALIAS(nm, alias)\
+static const char *vdrvinit_ ## nm ## _alias = RTE_STR(alias)
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif /* _RTE_VDEV_H_ */
+#endif