[PATCH v6 3/4] bus/vdev: move to vdev bus to drivers/bus

[Jianfeng Tan <jianfeng.tan@intel.com>]

Move the vdev bus from lib/librte_eal to drivers/bus.

As the crypto vdev helper function refers to data structure
in rte_vdev.h, so we move those helper function into drivers/bus
too.

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
---
 config/common_base                        |   5 +
 drivers/bus/Makefile                      |   3 +
 drivers/bus/vdev/Makefile                 |  55 +++++
 drivers/bus/vdev/rte_bus_vdev_version.map |   8 +
 drivers/bus/vdev/rte_vdev.h               | 153 +++++++++++++
 drivers/bus/vdev/vdev.c                   | 344 ++++++++++++++++++++++++++++++
 drivers/crypto/Makefile                   |   1 +
 drivers/event/Makefile                    |   2 +-
 drivers/net/Makefile                      |   2 +-
 lib/librte_eal/bsdapp/eal/Makefile        |   1 -
 lib/librte_eal/common/Makefile            |   2 +-
 lib/librte_eal/common/eal_common_vdev.c   | 342 -----------------------------
 lib/librte_eal/common/include/rte_dev.h   |  24 +--
 lib/librte_eal/common/include/rte_vdev.h  | 131 ------------
 lib/librte_eal/linuxapp/eal/Makefile      |   1 -
 mk/rte.app.mk                             |   1 +
 16 files changed, 574 insertions(+), 501 deletions(-)
 create mode 100644 drivers/bus/vdev/Makefile
 create mode 100644 drivers/bus/vdev/rte_bus_vdev_version.map
 create mode 100644 drivers/bus/vdev/rte_vdev.h
 create mode 100644 drivers/bus/vdev/vdev.c
 delete mode 100644 lib/librte_eal/common/eal_common_vdev.c
 delete mode 100644 lib/librte_eal/common/include/rte_vdev.h

diff --git a/config/common_base b/config/common_base
index 22068c5..c6f2aae 100644
--- a/config/common_base
+++ b/config/common_base
@@ -754,3 +754,8 @@ CONFIG_RTE_APP_CRYPTO_PERF=y
 # Compile the eventdev application
 #
 CONFIG_RTE_APP_EVENTDEV=y
+
+#
+# Compile the vdev bus
+#
+CONFIG_RTE_LIBRTE_VDEV_BUS=y
diff --git a/drivers/bus/Makefile b/drivers/bus/Makefile
index 6cb6466..91ffa87 100644
--- a/drivers/bus/Makefile
+++ b/drivers/bus/Makefile
@@ -38,4 +38,7 @@ DEPDIRS-dpaa = $(core-libs)
 DIRS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += fslmc
 DEPDIRS-fslmc = $(core-libs)
 
+DIRS-$(CONFIG_RTE_LIBRTE_VDEV_BUS) += vdev
+DEPDIRS-vdev = $(core-libs)
+
 include $(RTE_SDK)/mk/rte.subdir.mk
diff --git a/drivers/bus/vdev/Makefile b/drivers/bus/vdev/Makefile
new file mode 100644
index 0000000..6c48ba0
--- /dev/null
+++ b/drivers/bus/vdev/Makefile
@@ -0,0 +1,55 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2017 Intel Corporation. All rights reserved.
+#   All rights reserved.
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     * Neither the name of Intel Corporation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+#
+# library name
+#
+LIB = librte_bus_vdev.a
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+
+# versioning export map
+EXPORT_MAP := rte_bus_vdev_version.map
+
+# library version
+LIBABIVER := 1
+
+SRCS-y += vdev.c
+
+#
+# Export include files
+#
+SYMLINK-y-include += rte_vdev.h
+
+include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/drivers/bus/vdev/rte_bus_vdev_version.map b/drivers/bus/vdev/rte_bus_vdev_version.map
new file mode 100644
index 0000000..6ccb789
--- /dev/null
+++ b/drivers/bus/vdev/rte_bus_vdev_version.map
@@ -0,0 +1,8 @@
+DPDK_17.11 {
+	global:
+
+	rte_vdev_init;
+	rte_vdev_register;
+	rte_vdev_uninit;
+	rte_vdev_unregister;
+};
diff --git a/drivers/bus/vdev/rte_vdev.h b/drivers/bus/vdev/rte_vdev.h
new file mode 100644
index 0000000..41762b8
--- /dev/null
+++ b/drivers/bus/vdev/rte_vdev.h
@@ -0,0 +1,153 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   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
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * 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.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#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 */
+};
+
+/**
+ * @internal
+ * Helper macro for drivers that need to convert to struct rte_vdev_device.
+ */
+#define RTE_DEV_TO_VDEV(ptr) \
+	container_of(ptr, struct rte_vdev_device, device)
+
+static inline const char *
+rte_vdev_device_name(const struct rte_vdev_device *dev)
+{
+	if (dev && dev->device.name)
+		return dev->device.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(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);
+
+/**
+ * Remove function called for each virtual device driver once.
+ */
+typedef int (rte_vdev_remove_t)(struct rte_vdev_device *dev);
+
+/**
+ * A virtual device driver abstraction.
+ */
+struct rte_vdev_driver {
+	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_driver structure describing the driver
+ *   to be registered.
+ */
+void rte_vdev_register(struct rte_vdev_driver *driver);
+
+/**
+ * Unregister a virtual device driver.
+ *
+ * @param driver
+ *   A pointer to a rte_vdev_driver structure describing the driver
+ *   to be unregistered.
+ */
+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)
+
+/**
+ * Initialize a driver specified by name.
+ *
+ * @param name
+ *   The pointer to a driver name to be initialized.
+ * @param args
+ *   The pointer to arguments used by driver initialization.
+ * @return
+ *  0 on success, negative on error
+ */
+int rte_vdev_init(const char *name, const char *args);
+
+/**
+ * Uninitalize a driver specified by name.
+ *
+ * @param name
+ *   The pointer to a driver name to be initialized.
+ * @return
+ *  0 on success, negative on error
+ */
+int rte_vdev_uninit(const char *name);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/drivers/bus/vdev/vdev.c b/drivers/bus/vdev/vdev.c
new file mode 100644
index 0000000..a16eb71
--- /dev/null
+++ b/drivers/bus/vdev/vdev.c
@@ -0,0 +1,344 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   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
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * 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.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <sys/queue.h>
+
+#include <rte_eal.h>
+#include <rte_dev.h>
+#include <rte_bus.h>
+#include <rte_common.h>
+#include <rte_devargs.h>
+#include <rte_memory.h>
+#include <rte_errno.h>
+
+#include "rte_vdev.h"
+
+/* Forward declare to access virtual bus name */
+static struct rte_bus rte_vdev_bus;
+
+/** Double linked list of virtual device drivers. */
+TAILQ_HEAD(vdev_device_list, rte_vdev_device);
+
+static struct vdev_device_list vdev_device_list =
+	TAILQ_HEAD_INITIALIZER(vdev_device_list);
+struct vdev_driver_list vdev_driver_list =
+	TAILQ_HEAD_INITIALIZER(vdev_driver_list);
+
+/* register a driver */
+void
+rte_vdev_register(struct rte_vdev_driver *driver)
+{
+	TAILQ_INSERT_TAIL(&vdev_driver_list, driver, next);
+}
+
+/* unregister a driver */
+void
+rte_vdev_unregister(struct rte_vdev_driver *driver)
+{
+	TAILQ_REMOVE(&vdev_driver_list, driver, next);
+}
+
+static int
+vdev_parse(const char *name, void *addr)
+{
+	struct rte_vdev_driver **out = addr;
+	struct rte_vdev_driver *driver = NULL;
+
+	TAILQ_FOREACH(driver, &vdev_driver_list, next) {
+		if (strncmp(driver->driver.name, name,
+			    strlen(driver->driver.name)) == 0)
+			break;
+		if (driver->driver.alias &&
+		    strncmp(driver->driver.alias, name,
+			    strlen(driver->driver.alias)) == 0)
+			break;
+	}
+	if (driver != NULL &&
+	    addr != NULL)
+		*out = driver;
+	return driver == NULL;
+}
+
+static int
+vdev_probe_all_drivers(struct rte_vdev_device *dev)
+{
+	const char *name;
+	struct rte_vdev_driver *driver;
+	int ret;
+
+	name = rte_vdev_device_name(dev);
+
+	RTE_LOG(DEBUG, EAL, "Search driver %s to probe device %s\n", name,
+		rte_vdev_device_name(dev));
+
+	if (vdev_parse(name, &driver))
+		return -1;
+	dev->device.driver = &driver->driver;
+	ret = driver->probe(dev);
+	if (ret)
+		dev->device.driver = NULL;
+	return ret;
+}
+
+static struct rte_vdev_device *
+find_vdev(const char *name)
+{
+	struct rte_vdev_device *dev;
+
+	if (!name)
+		return NULL;
+
+	TAILQ_FOREACH(dev, &vdev_device_list, next) {
+		const char *devname = rte_vdev_device_name(dev);
+
+		if (!strncmp(devname, name, strlen(name)))
+			return dev;
+	}
+
+	return NULL;
+}
+
+static struct rte_devargs *
+alloc_devargs(const char *name, const char *args)
+{
+	struct rte_devargs *devargs;
+	int ret;
+
+	devargs = calloc(1, sizeof(*devargs));
+	if (!devargs)
+		return NULL;
+
+	devargs->bus = &rte_vdev_bus;
+	if (args)
+		devargs->args = strdup(args);
+	else
+		devargs->args = strdup("");
+
+	ret = snprintf(devargs->name, sizeof(devargs->name), "%s", name);
+	if (ret < 0 || ret >= (int)sizeof(devargs->name)) {
+		free(devargs->args);
+		free(devargs);
+		return NULL;
+	}
+
+	return devargs;
+}
+
+int
+rte_vdev_init(const char *name, const char *args)
+{
+	struct rte_vdev_device *dev;
+	struct rte_devargs *devargs;
+	int ret;
+
+	if (name == NULL)
+		return -EINVAL;
+
+	dev = find_vdev(name);
+	if (dev)
+		return -EEXIST;
+
+	devargs = alloc_devargs(name, args);
+	if (!devargs)
+		return -ENOMEM;
+
+	dev = calloc(1, sizeof(*dev));
+	if (!dev) {
+		ret = -ENOMEM;
+		goto fail;
+	}
+
+	dev->device.devargs = devargs;
+	dev->device.numa_node = SOCKET_ID_ANY;
+	dev->device.name = devargs->name;
+
+	ret = vdev_probe_all_drivers(dev);
+	if (ret) {
+		if (ret > 0)
+			RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
+		goto fail;
+	}
+
+	TAILQ_INSERT_TAIL(&devargs_list, devargs, next);
+
+	TAILQ_INSERT_TAIL(&vdev_device_list, dev, next);
+	return 0;
+
+fail:
+	free(devargs->args);
+	free(devargs);
+	free(dev);
+	return ret;
+}
+
+static int
+vdev_remove_driver(struct rte_vdev_device *dev)
+{
+	const char *name = rte_vdev_device_name(dev);
+	const struct rte_vdev_driver *driver;
+
+	if (!dev->device.driver) {
+		RTE_LOG(DEBUG, EAL, "no driver attach to device %s\n", name);
+		return 1;
+	}
+
+	driver = container_of(dev->device.driver, const struct rte_vdev_driver,
+		driver);
+	return driver->remove(dev);
+}
+
+int
+rte_vdev_uninit(const char *name)
+{
+	struct rte_vdev_device *dev;
+	struct rte_devargs *devargs;
+	int ret;
+
+	if (name == NULL)
+		return -EINVAL;
+
+	dev = find_vdev(name);
+	if (!dev)
+		return -ENOENT;
+
+	devargs = dev->device.devargs;
+
+	ret = vdev_remove_driver(dev);
+	if (ret)
+		return ret;
+
+	TAILQ_REMOVE(&vdev_device_list, dev, next);
+
+	TAILQ_REMOVE(&devargs_list, devargs, next);
+
+	free(devargs->args);
+	free(devargs);
+	free(dev);
+	return 0;
+}
+
+static int
+vdev_scan(void)
+{
+	struct rte_vdev_device *dev;
+	struct rte_devargs *devargs;
+
+	/* for virtual devices we scan the devargs_list populated via cmdline */
+	TAILQ_FOREACH(devargs, &devargs_list, next) {
+
+		if (devargs->bus != &rte_vdev_bus)
+			continue;
+
+		dev = find_vdev(devargs->name);
+		if (dev)
+			continue;
+
+		dev = calloc(1, sizeof(*dev));
+		if (!dev)
+			return -1;
+
+		dev->device.devargs = devargs;
+		dev->device.numa_node = SOCKET_ID_ANY;
+		dev->device.name = devargs->name;
+
+		TAILQ_INSERT_TAIL(&vdev_device_list, dev, next);
+	}
+
+	return 0;
+}
+
+static int
+vdev_probe(void)
+{
+	struct rte_vdev_device *dev;
+
+	/* call the init function for each virtual device */
+	TAILQ_FOREACH(dev, &vdev_device_list, next) {
+
+		if (dev->device.driver)
+			continue;
+
+		if (vdev_probe_all_drivers(dev)) {
+			RTE_LOG(ERR, EAL, "failed to initialize %s device\n",
+				rte_vdev_device_name(dev));
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+static struct rte_device *
+vdev_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
+		 const void *data)
+{
+	struct rte_vdev_device *dev;
+
+	TAILQ_FOREACH(dev, &vdev_device_list, next) {
+		if (start && &dev->device == start) {
+			start = NULL;
+			continue;
+		}
+		if (cmp(&dev->device, data) == 0)
+			return &dev->device;
+	}
+	return NULL;
+}
+
+static int
+vdev_plug(struct rte_device *dev)
+{
+	return vdev_probe_all_drivers(RTE_DEV_TO_VDEV(dev));
+}
+
+static int
+vdev_unplug(struct rte_device *dev)
+{
+	return rte_vdev_uninit(dev->name);
+}
+
+static struct rte_bus rte_vdev_bus = {
+	.scan = vdev_scan,
+	.probe = vdev_probe,
+	.find_device = vdev_find_device,
+	.plug = vdev_plug,
+	.unplug = vdev_unplug,
+	.parse = vdev_parse,
+};
+
+RTE_REGISTER_BUS(vdev, rte_vdev_bus);
diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
index 7a719b9..e487f6c 100644
--- a/drivers/crypto/Makefile
+++ b/drivers/crypto/Makefile
@@ -32,6 +32,7 @@
 include $(RTE_SDK)/mk/rte.vars.mk
 
 core-libs := librte_eal librte_mbuf librte_mempool librte_ring librte_cryptodev
+core-libs += librte_bus_vdev
 
 DIRS-$(CONFIG_RTE_LIBRTE_PMD_AESNI_GCM) += aesni_gcm
 DEPDIRS-aesni_gcm = $(core-libs)
diff --git a/drivers/event/Makefile b/drivers/event/Makefile
index 3f6b898..ceedf70 100644
--- a/drivers/event/Makefile
+++ b/drivers/event/Makefile
@@ -31,7 +31,7 @@
 
 include $(RTE_SDK)/mk/rte.vars.mk
 
-core-libs := librte_eal librte_eventdev
+core-libs := librte_eal librte_eventdev librte_bus_vdev
 
 DIRS-$(CONFIG_RTE_LIBRTE_PMD_SKELETON_EVENTDEV) += skeleton
 DEPDIRS-skeleton = $(core-libs)
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index b28310b..1039d4e 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -37,7 +37,7 @@ ifeq ($(CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD),d)
 endif
 
 core-libs := librte_eal librte_mbuf librte_mempool librte_ring librte_ether
-core-libs += librte_net librte_kvargs
+core-libs += librte_net librte_kvargs librte_bus_vdev
 
 DIRS-$(CONFIG_RTE_LIBRTE_PMD_AF_PACKET) += af_packet
 DEPDIRS-af_packet = $(core-libs)
diff --git a/lib/librte_eal/bsdapp/eal/Makefile b/lib/librte_eal/bsdapp/eal/Makefile
index 317a75e..8a3376c 100644
--- a/lib/librte_eal/bsdapp/eal/Makefile
+++ b/lib/librte_eal/bsdapp/eal/Makefile
@@ -68,7 +68,6 @@ SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_timer.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_memzone.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_log.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_launch.c
-SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_vdev.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_pci.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_pci_uio.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_memory.c
diff --git a/lib/librte_eal/common/Makefile b/lib/librte_eal/common/Makefile
index e8fd67a..7eeb06a 100644
--- a/lib/librte_eal/common/Makefile
+++ b/lib/librte_eal/common/Makefile
@@ -38,7 +38,7 @@ INC += rte_per_lcore.h rte_random.h
 INC += rte_tailq.h rte_interrupts.h rte_alarm.h
 INC += rte_string_fns.h rte_version.h
 INC += rte_eal_memconfig.h rte_malloc_heap.h
-INC += rte_hexdump.h rte_devargs.h rte_bus.h rte_dev.h rte_vdev.h
+INC += rte_hexdump.h rte_devargs.h rte_bus.h rte_dev.h
 INC += rte_pci_dev_feature_defs.h rte_pci_dev_features.h
 INC += rte_malloc.h rte_keepalive.h rte_time.h
 INC += rte_service.h rte_service_component.h
diff --git a/lib/librte_eal/common/eal_common_vdev.c b/lib/librte_eal/common/eal_common_vdev.c
deleted file mode 100644
index f7e547a..0000000
--- a/lib/librte_eal/common/eal_common_vdev.c
+++ /dev/null
@@ -1,342 +0,0 @@
-/*-
- *   BSD LICENSE
- *
- *   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
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * 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.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <string.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <sys/queue.h>
-
-#include <rte_eal.h>
-#include <rte_dev.h>
-#include <rte_bus.h>
-#include <rte_vdev.h>
-#include <rte_common.h>
-#include <rte_devargs.h>
-#include <rte_memory.h>
-#include <rte_errno.h>
-
-/* Forward declare to access virtual bus name */
-static struct rte_bus rte_vdev_bus;
-
-/** Double linked list of virtual device drivers. */
-TAILQ_HEAD(vdev_device_list, rte_vdev_device);
-
-static struct vdev_device_list vdev_device_list =
-	TAILQ_HEAD_INITIALIZER(vdev_device_list);
-struct vdev_driver_list vdev_driver_list =
-	TAILQ_HEAD_INITIALIZER(vdev_driver_list);
-
-/* register a driver */
-void
-rte_vdev_register(struct rte_vdev_driver *driver)
-{
-	TAILQ_INSERT_TAIL(&vdev_driver_list, driver, next);
-}
-
-/* unregister a driver */
-void
-rte_vdev_unregister(struct rte_vdev_driver *driver)
-{
-	TAILQ_REMOVE(&vdev_driver_list, driver, next);
-}
-
-static int
-vdev_parse(const char *name, void *addr)
-{
-	struct rte_vdev_driver **out = addr;
-	struct rte_vdev_driver *driver = NULL;
-
-	TAILQ_FOREACH(driver, &vdev_driver_list, next) {
-		if (strncmp(driver->driver.name, name,
-			    strlen(driver->driver.name)) == 0)
-			break;
-		if (driver->driver.alias &&
-		    strncmp(driver->driver.alias, name,
-			    strlen(driver->driver.alias)) == 0)
-			break;
-	}
-	if (driver != NULL &&
-	    addr != NULL)
-		*out = driver;
-	return driver == NULL;
-}
-
-static int
-vdev_probe_all_drivers(struct rte_vdev_device *dev)
-{
-	const char *name;
-	struct rte_vdev_driver *driver;
-	int ret;
-
-	name = rte_vdev_device_name(dev);
-
-	RTE_LOG(DEBUG, EAL, "Search driver %s to probe device %s\n", name,
-		rte_vdev_device_name(dev));
-
-	if (vdev_parse(name, &driver))
-		return -1;
-	dev->device.driver = &driver->driver;
-	ret = driver->probe(dev);
-	if (ret)
-		dev->device.driver = NULL;
-	return ret;
-}
-
-static struct rte_vdev_device *
-find_vdev(const char *name)
-{
-	struct rte_vdev_device *dev;
-
-	if (!name)
-		return NULL;
-
-	TAILQ_FOREACH(dev, &vdev_device_list, next) {
-		const char *devname = rte_vdev_device_name(dev);
-		if (!strncmp(devname, name, strlen(name)))
-			return dev;
-	}
-
-	return NULL;
-}
-
-static struct rte_devargs *
-alloc_devargs(const char *name, const char *args)
-{
-	struct rte_devargs *devargs;
-	int ret;
-
-	devargs = calloc(1, sizeof(*devargs));
-	if (!devargs)
-		return NULL;
-
-	devargs->bus = &rte_vdev_bus;
-	if (args)
-		devargs->args = strdup(args);
-	else
-		devargs->args = strdup("");
-
-	ret = snprintf(devargs->name, sizeof(devargs->name), "%s", name);
-	if (ret < 0 || ret >= (int)sizeof(devargs->name)) {
-		free(devargs->args);
-		free(devargs);
-		return NULL;
-	}
-
-	return devargs;
-}
-
-int
-rte_vdev_init(const char *name, const char *args)
-{
-	struct rte_vdev_device *dev;
-	struct rte_devargs *devargs;
-	int ret;
-
-	if (name == NULL)
-		return -EINVAL;
-
-	dev = find_vdev(name);
-	if (dev)
-		return -EEXIST;
-
-	devargs = alloc_devargs(name, args);
-	if (!devargs)
-		return -ENOMEM;
-
-	dev = calloc(1, sizeof(*dev));
-	if (!dev) {
-		ret = -ENOMEM;
-		goto fail;
-	}
-
-	dev->device.devargs = devargs;
-	dev->device.numa_node = SOCKET_ID_ANY;
-	dev->device.name = devargs->name;
-
-	ret = vdev_probe_all_drivers(dev);
-	if (ret) {
-		if (ret > 0)
-			RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
-		goto fail;
-	}
-
-	TAILQ_INSERT_TAIL(&devargs_list, devargs, next);
-
-	TAILQ_INSERT_TAIL(&vdev_device_list, dev, next);
-	return 0;
-
-fail:
-	free(devargs->args);
-	free(devargs);
-	free(dev);
-	return ret;
-}
-
-static int
-vdev_remove_driver(struct rte_vdev_device *dev)
-{
-	const char *name = rte_vdev_device_name(dev);
-	const struct rte_vdev_driver *driver;
-
-	if (!dev->device.driver) {
-		RTE_LOG(DEBUG, EAL, "no driver attach to device %s\n", name);
-		return 1;
-	}
-
-	driver = container_of(dev->device.driver, const struct rte_vdev_driver,
-		driver);
-	return driver->remove(dev);
-}
-
-int
-rte_vdev_uninit(const char *name)
-{
-	struct rte_vdev_device *dev;
-	struct rte_devargs *devargs;
-	int ret;
-
-	if (name == NULL)
-		return -EINVAL;
-
-	dev = find_vdev(name);
-	if (!dev)
-		return -ENOENT;
-
-	devargs = dev->device.devargs;
-
-	ret = vdev_remove_driver(dev);
-	if (ret)
-		return ret;
-
-	TAILQ_REMOVE(&vdev_device_list, dev, next);
-
-	TAILQ_REMOVE(&devargs_list, devargs, next);
-
-	free(devargs->args);
-	free(devargs);
-	free(dev);
-	return 0;
-}
-
-static int
-vdev_scan(void)
-{
-	struct rte_vdev_device *dev;
-	struct rte_devargs *devargs;
-
-	/* for virtual devices we scan the devargs_list populated via cmdline */
-	TAILQ_FOREACH(devargs, &devargs_list, next) {
-
-		if (devargs->bus != &rte_vdev_bus)
-			continue;
-
-		dev = find_vdev(devargs->name);
-		if (dev)
-			continue;
-
-		dev = calloc(1, sizeof(*dev));
-		if (!dev)
-			return -1;
-
-		dev->device.devargs = devargs;
-		dev->device.numa_node = SOCKET_ID_ANY;
-		dev->device.name = devargs->name;
-
-		TAILQ_INSERT_TAIL(&vdev_device_list, dev, next);
-	}
-
-	return 0;
-}
-
-static int
-vdev_probe(void)
-{
-	struct rte_vdev_device *dev;
-
-	/* call the init function for each virtual device */
-	TAILQ_FOREACH(dev, &vdev_device_list, next) {
-
-		if (dev->device.driver)
-			continue;
-
-		if (vdev_probe_all_drivers(dev)) {
-			RTE_LOG(ERR, EAL, "failed to initialize %s device\n",
-				rte_vdev_device_name(dev));
-			return -1;
-		}
-	}
-
-	return 0;
-}
-
-static struct rte_device *
-vdev_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
-		 const void *data)
-{
-	struct rte_vdev_device *dev;
-
-	TAILQ_FOREACH(dev, &vdev_device_list, next) {
-		if (start && &dev->device == start) {
-			start = NULL;
-			continue;
-		}
-		if (cmp(&dev->device, data) == 0)
-			return &dev->device;
-	}
-	return NULL;
-}
-
-static int
-vdev_plug(struct rte_device *dev)
-{
-	return vdev_probe_all_drivers(RTE_DEV_TO_VDEV(dev));
-}
-
-static int
-vdev_unplug(struct rte_device *dev)
-{
-	return rte_vdev_uninit(dev->name);
-}
-
-static struct rte_bus rte_vdev_bus = {
-	.scan = vdev_scan,
-	.probe = vdev_probe,
-	.find_device = vdev_find_device,
-	.plug = vdev_plug,
-	.unplug = vdev_unplug,
-	.parse = vdev_parse,
-};
-
-RTE_REGISTER_BUS(vdev, rte_vdev_bus);
diff --git a/lib/librte_eal/common/include/rte_dev.h b/lib/librte_eal/common/include/rte_dev.h
index 5386d3a..8bfc343 100644
--- a/lib/librte_eal/common/include/rte_dev.h
+++ b/lib/librte_eal/common/include/rte_dev.h
@@ -166,28 +166,6 @@ struct rte_device {
 };
 
 /**
- * Initialize a driver specified by name.
- *
- * @param name
- *   The pointer to a driver name to be initialized.
- * @param args
- *   The pointer to arguments used by driver initialization.
- * @return
- *  0 on success, negative on error
- */
-int rte_vdev_init(const char *name, const char *args);
-
-/**
- * Uninitalize a driver specified by name.
- *
- * @param name
- *   The pointer to a driver name to be initialized.
- * @return
- *  0 on success, negative on error
- */
-int rte_vdev_uninit(const char *name);
-
-/**
  * Attach a device to a registered driver.
  *
  * @param name
@@ -312,4 +290,4 @@ __attribute__((used)) = str
 }
 #endif
 
-#endif /* _RTE_VDEV_H_ */
+#endif /* _RTE_DEV_H_ */
diff --git a/lib/librte_eal/common/include/rte_vdev.h b/lib/librte_eal/common/include/rte_vdev.h
deleted file mode 100644
index 29f5a52..0000000
--- a/lib/librte_eal/common/include/rte_vdev.h
+++ /dev/null
@@ -1,131 +0,0 @@
-/*-
- *   BSD LICENSE
- *
- *   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
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * 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.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#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 */
-};
-
-/**
- * @internal
- * Helper macro for drivers that need to convert to struct rte_vdev_device.
- */
-#define RTE_DEV_TO_VDEV(ptr) \
-	container_of(ptr, struct rte_vdev_device, device)
-
-static inline const char *
-rte_vdev_device_name(const struct rte_vdev_device *dev)
-{
-	if (dev && dev->device.name)
-		return dev->device.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(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);
-
-/**
- * Remove function called for each virtual device driver once.
- */
-typedef int (rte_vdev_remove_t)(struct rte_vdev_device *dev);
-
-/**
- * A virtual device driver abstraction.
- */
-struct rte_vdev_driver {
-	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_driver structure describing the driver
- *   to be registered.
- */
-void rte_vdev_register(struct rte_vdev_driver *driver);
-
-/**
- * Unregister a virtual device driver.
- *
- * @param driver
- *   A pointer to a rte_vdev_driver structure describing the driver
- *   to be unregistered.
- */
-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
diff --git a/lib/librte_eal/linuxapp/eal/Makefile b/lib/librte_eal/linuxapp/eal/Makefile
index 21e0b4a..22ac5cd 100644
--- a/lib/librte_eal/linuxapp/eal/Makefile
+++ b/lib/librte_eal/linuxapp/eal/Makefile
@@ -77,7 +77,6 @@ SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_timer.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_memzone.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_log.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_launch.c
-SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_vdev.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_pci.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_pci_uio.c
 SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_memory.c
diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index a788be2..7d31595 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -98,6 +98,7 @@ _LDLIBS-$(CONFIG_RTE_LIBRTE_MEMPOOL)        += -lrte_mempool
 _LDLIBS-$(CONFIG_RTE_DRIVER_MEMPOOL_RING)   += -lrte_mempool_ring
 _LDLIBS-$(CONFIG_RTE_LIBRTE_RING)           += -lrte_ring
 _LDLIBS-$(CONFIG_RTE_LIBRTE_EAL)            += -lrte_eal
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VDEV_BUS)       += -lrte_bus_vdev
 _LDLIBS-$(CONFIG_RTE_LIBRTE_CMDLINE)        += -lrte_cmdline
 _LDLIBS-$(CONFIG_RTE_LIBRTE_REORDER)        += -lrte_reorder
 
-- 
2.7.4