vdpa/mlx5: introduce Mellanox vDPA driver

Add a new driver to support vDPA operations by Mellanox devices.

The first Mellanox devices which support vDPA operations are
ConnectX-6 Dx and Bluefield1 HCA for their PF ports and VF ports.

This driver is depending on rdma-core like the mlx5 PMD, also it is
going to use mlx5 DevX to create HW objects directly by the FW.
Hence, the common/mlx5 library is linked to the mlx5_vdpa driver.

This driver will not be compiled by default due to the above
dependencies.

Register a new log type for this driver.

Signed-off-by: Matan Azrad <matan@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

MAINTAINERS

@@ -1107,6 +1107,13 @@ F: drivers/vdpa/ifc/
 F: doc/guides/vdpadevs/ifc.rst
 F: doc/guides/vdpadevs/features/ifcvf.ini
 
+Mellanox mlx5 vDPA
+M: Matan Azrad <matan@mellanox.com>
+M: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
+F: drivers/vdpa/mlx5/
+F: doc/guides/vdpadevs/mlx5.rst
+F: doc/guides/vdpadevs/features/mlx5.ini
+
 
 Eventdev Drivers
 ----------------

config/common_base

@@ -366,6 +366,11 @@ CONFIG_RTE_LIBRTE_MLX4_DEBUG=n
 CONFIG_RTE_LIBRTE_MLX5_PMD=n
 CONFIG_RTE_LIBRTE_MLX5_DEBUG=n
 
+#
+# Compile vdpa-oriented Mellanox ConnectX-6 & Bluefield (MLX5) PMD
+#
+CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD=n
+
 # Linking method for mlx4/5 dependency on ibverbs and related libraries
 # Default linking is dynamic by linker.
 # Other options are: dynamic by dlopen at run-time, or statically embedded.

doc/guides/rel_notes/release_20_02.rst

@@ -113,6 +113,11 @@ New Features
   * Added support for RSS using L3/L4 source/destination only.
   * Added support for matching on GTP tunnel header item.
 
+* **Add new vDPA PMD based on Mellanox devices**
+
+  Added a new Mellanox vDPA  (``mlx5_vdpa``) PMD.
+  See the :doc:`../vdpadevs/mlx5` guide for more details on this driver.
+
 * **Updated testpmd application.**
 
   Added support for ESP and L2TPv3 over IP rte_flow patterns to the testpmd

doc/guides/vdpadevs/features/mlx5.ini

@@ -0,0 +1,14 @@
+;
+; Supported features of the 'mlx5' VDPA driver.
+;
+; Refer to default.ini for the full list of available driver features.
+;
+[Features]
+Other kdrv           = Y
+ARMv8                = Y
+Power8               = Y
+x86-32               = Y
+x86-64               = Y
+Usage doc            = Y
+Design doc           = Y
+

doc/guides/vdpadevs/index.rst

@@ -13,3 +13,4 @@ which can be used from an application through vhost API.
 
     features_overview
     ifc
+    mlx5

doc/guides/vdpadevs/mlx5.rst

@@ -0,0 +1,111 @@
+..  SPDX-License-Identifier: BSD-3-Clause
+    Copyright 2019 Mellanox Technologies, Ltd
+
+MLX5 vDPA driver
+================
+
+The MLX5 vDPA (vhost data path acceleration) driver library
+(**librte_pmd_mlx5_vdpa**) provides support for **Mellanox ConnectX-6**,
+**Mellanox ConnectX-6DX** and **Mellanox BlueField** families of
+10/25/40/50/100/200 Gb/s adapters as well as their virtual functions (VF) in
+SR-IOV context.
+
+.. note::
+
+   Due to external dependencies, this driver is disabled in default
+   configuration of the "make" build. It can be enabled with
+   ``CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD=y`` or by using "meson" build system which
+   will detect dependencies.
+
+
+Design
+------
+
+For security reasons and robustness, this driver only deals with virtual
+memory addresses. The way resources allocations are handled by the kernel,
+combined with hardware specifications that allow to handle virtual memory
+addresses directly, ensure that DPDK applications cannot access random
+physical memory (or memory that does not belong to the current process).
+
+The PMD can use libibverbs and libmlx5 to access the device firmware
+or directly the hardware components.
+There are different levels of objects and bypassing abilities
+to get the best performances:
+
+- Verbs is a complete high-level generic API
+- Direct Verbs is a device-specific API
+- DevX allows to access firmware objects
+- Direct Rules manages flow steering at low-level hardware layer
+
+Enabling librte_pmd_mlx5_vdpa causes DPDK applications to be linked against
+libibverbs.
+
+A Mellanox mlx5 PCI device can be probed by either net/mlx5 driver or vdpa/mlx5
+driver but not in parallel. Hence, the user should decide the driver by the
+``class`` parameter in the device argument list.
+By default, the mlx5 device will be probed by the net/mlx5 driver.
+
+Supported NICs
+--------------
+
+* Mellanox(R) ConnectX(R)-6 200G MCX654106A-HCAT (4x200G)
+* Mellanox(R) ConnectX(R)-6DX EN 100G MCX623106AN-CDAT (2*100G)
+* Mellanox(R) ConnectX(R)-6DX EN 200G MCX623105AN-VDAT (1*200G)
+* Mellanox(R) BlueField SmartNIC 25G MBF1M332A-ASCAT (2*25G)
+
+Prerequisites
+-------------
+
+- Mellanox OFED version: **4.7**
+  see :doc:`../../nics/mlx5` guide for more Mellanox OFED details.
+
+Compilation options
+~~~~~~~~~~~~~~~~~~~
+
+These options can be modified in the ``.config`` file.
+
+- ``CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD`` (default **n**)
+
+  Toggle compilation of librte_pmd_mlx5 itself.
+
+- ``CONFIG_RTE_IBVERBS_LINK_DLOPEN`` (default **n**)
+
+  Build PMD with additional code to make it loadable without hard
+  dependencies on **libibverbs** nor **libmlx5**, which may not be installed
+  on the target system.
+
+  In this mode, their presence is still required for it to run properly,
+  however their absence won't prevent a DPDK application from starting (with
+  ``CONFIG_RTE_BUILD_SHARED_LIB`` disabled) and they won't show up as
+  missing with ``ldd(1)``.
+
+  It works by moving these dependencies to a purpose-built rdma-core "glue"
+  plug-in which must either be installed in a directory whose name is based
+  on ``CONFIG_RTE_EAL_PMD_PATH`` suffixed with ``-glue`` if set, or in a
+  standard location for the dynamic linker (e.g. ``/lib``) if left to the
+  default empty string (``""``).
+
+  This option has no performance impact.
+
+- ``CONFIG_RTE_IBVERBS_LINK_STATIC`` (default **n**)
+
+  Embed static flavor of the dependencies **libibverbs** and **libmlx5**
+  in the PMD shared library or the executable static binary.
+
+.. note::
+
+   For BlueField, target should be set to ``arm64-bluefield-linux-gcc``. This
+   will enable ``CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD`` and set
+   ``RTE_CACHE_LINE_SIZE`` to 64. Default armv8a configuration of make build and
+   meson build set it to 128 then brings performance degradation.
+
+Run-time configuration
+~~~~~~~~~~~~~~~~~~~~~~
+
+- **ethtool** operations on related kernel interfaces also affect the PMD.
+
+- ``class`` parameter [string]
+
+  Select the class of the driver that should probe the device.
+  `vdpa` for the mlx5 vDPA driver.
+

drivers/common/Makefile

@@ -35,7 +35,7 @@ ifneq (,$(findstring y,$(IAVF-y)))
 DIRS-y += iavf
 endif
 
-ifeq ($(CONFIG_RTE_LIBRTE_MLX5_PMD),y)
+ifeq ($(findstring y,$(CONFIG_RTE_LIBRTE_MLX5_PMD)$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD)),y)
 DIRS-y += mlx5
 endif
 

drivers/common/mlx5/Makefile

@@ -10,15 +10,16 @@ LIB_GLUE_BASE = librte_pmd_mlx5_glue.so
 LIB_GLUE_VERSION = 20.02.0
 
 # Sources.
+ifeq ($(findstring y,$(CONFIG_RTE_LIBRTE_MLX5_PMD)$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD)),y)
 ifneq ($(CONFIG_RTE_IBVERBS_LINK_DLOPEN),y)
-SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_glue.c
+SRCS-y += mlx5_glue.c
 endif
-SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_devx_cmds.c
+SRCS-y += mlx5_devx_cmds.c
-SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_common.c
+SRCS-y += mlx5_common.c
-SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_nl.c
+SRCS-y += mlx5_nl.c
-
 ifeq ($(CONFIG_RTE_IBVERBS_LINK_DLOPEN),y)
-INSTALL-$(CONFIG_RTE_LIBRTE_MLX5_PMD)-lib += $(LIB_GLUE)
+INSTALL-y-lib += $(LIB_GLUE)
+endif
 endif
 
 # Basic CFLAGS.
@@ -317,7 +318,9 @@ mlx5_autoconf.h: mlx5_autoconf.h.new
 		cmp '$<' '$@' $(AUTOCONF_OUTPUT) || \
 		mv '$<' '$@'
 
-$(SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD):.c=.o): mlx5_autoconf.h
+ifeq ($(findstring y,$(CONFIG_RTE_LIBRTE_MLX5_PMD)$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD)),y)
+$(SRCS-y:.c=.o): mlx5_autoconf.h
+endif
 
 # Generate dependency plug-in for rdma-core when the PMD must not be linked
 # directly, so that applications do not inherit this dependency.

drivers/meson.build

@@ -42,6 +42,7 @@ foreach class:dpdk_driver_classes
 		build = true # set to false to disable, e.g. missing deps
 		reason = '<unknown reason>' # set if build == false to explain
 		name = drv
+		fmt_name = ''
 		allow_experimental_apis = false
 		sources = []
 		objs = []
@@ -98,8 +99,11 @@ foreach class:dpdk_driver_classes
 		else
 			class_drivers += name
 
-			dpdk_conf.set(config_flag_fmt.format(name.to_upper()),1)
+			if fmt_name == ''
-			lib_name = driver_name_fmt.format(name)
+				fmt_name = name
+			endif
+			dpdk_conf.set(config_flag_fmt.format(fmt_name.to_upper()),1)
+			lib_name = driver_name_fmt.format(fmt_name)
 
 			if allow_experimental_apis
 				cflags += '-DALLOW_EXPERIMENTAL_API'

drivers/vdpa/Makefile

@@ -7,4 +7,6 @@ ifeq ($(CONFIG_RTE_EAL_VFIO),y)
 DIRS-$(CONFIG_RTE_LIBRTE_IFC_PMD) += ifc
 endif
 
+DIRS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5
+
 include $(RTE_SDK)/mk/rte.subdir.mk

drivers/vdpa/meson.build

@@ -1,7 +1,8 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # Copyright 2019 Mellanox Technologies, Ltd
 
-drivers = ['ifc']
+drivers = ['ifc',
+	   'mlx5',]
 std_deps = ['bus_pci', 'kvargs']
 std_deps += ['vhost']
 config_flag_fmt = 'RTE_LIBRTE_@0@_PMD'

drivers/vdpa/mlx5/Makefile

@@ -0,0 +1,51 @@
+#   SPDX-License-Identifier: BSD-3-Clause
+#   Copyright 2019 Mellanox Technologies, Ltd
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# Library name.
+LIB = librte_pmd_mlx5_vdpa.a
+
+# Sources.
+SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa.c
+
+# Basic CFLAGS.
+CFLAGS += -O3
+CFLAGS += -std=c11 -Wall -Wextra
+CFLAGS += -g
+CFLAGS += -I$(RTE_SDK)/drivers/common/mlx5
+CFLAGS += -I$(RTE_SDK)/drivers/net/mlx5_vdpa
+CFLAGS += -I$(BUILDDIR)/drivers/common/mlx5
+CFLAGS += -D_BSD_SOURCE
+CFLAGS += -D_DEFAULT_SOURCE
+CFLAGS += -D_XOPEN_SOURCE=600
+CFLAGS += $(WERROR_FLAGS)
+CFLAGS += -Wno-strict-prototypes
+LDLIBS += -lrte_common_mlx5
+LDLIBS += -lrte_eal -lrte_vhost -lrte_kvargs -lrte_bus_pci
+
+# A few warnings cannot be avoided in external headers.
+CFLAGS += -Wno-error=cast-qual
+
+EXPORT_MAP := rte_pmd_mlx5_vdpa_version.map
+# memseg walk is not part of stable API
+CFLAGS += -DALLOW_EXPERIMENTAL_API
+
+# DEBUG which is usually provided on the command-line may enable
+# CONFIG_RTE_LIBRTE_MLX5_DEBUG.
+ifeq ($(DEBUG),1)
+CONFIG_RTE_LIBRTE_MLX5_DEBUG := y
+endif
+
+# User-defined CFLAGS.
+ifeq ($(CONFIG_RTE_LIBRTE_MLX5_DEBUG),y)
+CFLAGS += -pedantic
+ifneq ($(CONFIG_RTE_TOOLCHAIN_ICC),y)
+CFLAGS += -DPEDANTIC
+endif
+AUTO_CONFIG_CFLAGS += -Wno-pedantic
+else
+CFLAGS += -UPEDANTIC
+endif
+
+include $(RTE_SDK)/mk/rte.lib.mk

drivers/vdpa/mlx5/meson.build

@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2019 Mellanox Technologies, Ltd
+
+if not is_linux
+	build = false
+	reason = 'only supported on Linux'
+	subdir_done()
+endif
+
+fmt_name = 'mlx5_vdpa'
+allow_experimental_apis = true
+deps += ['hash', 'common_mlx5', 'vhost', 'bus_pci', 'eal']
+sources = files(
+	'mlx5_vdpa.c',
+)
+cflags_options = [
+	'-std=c11',
+	'-Wno-strict-prototypes',
+	'-D_BSD_SOURCE',
+	'-D_DEFAULT_SOURCE',
+	'-D_XOPEN_SOURCE=600'
+]
+foreach option:cflags_options
+	if cc.has_argument(option)
+		cflags += option
+	endif
+endforeach
+
+if get_option('buildtype').contains('debug')
+	cflags += [ '-pedantic', '-DPEDANTIC' ]
+else
+	cflags += [ '-UPEDANTIC' ]
+endif

drivers/vdpa/mlx5/mlx5_vdpa.c

@@ -0,0 +1,234 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2019 Mellanox Technologies, Ltd
+ */
+#include <rte_malloc.h>
+#include <rte_log.h>
+#include <rte_errno.h>
+#include <rte_bus_pci.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-Wpedantic"
+#endif
+#include <rte_vdpa.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-Wpedantic"
+#endif
+
+#include <mlx5_glue.h>
+#include <mlx5_common.h>
+
+#include "mlx5_vdpa_utils.h"
+
+
+struct mlx5_vdpa_priv {
+	TAILQ_ENTRY(mlx5_vdpa_priv) next;
+	int id; /* vDPA device id. */
+	struct ibv_context *ctx; /* Device context. */
+	struct rte_vdpa_dev_addr dev_addr;
+};
+
+TAILQ_HEAD(mlx5_vdpa_privs, mlx5_vdpa_priv) priv_list =
+					      TAILQ_HEAD_INITIALIZER(priv_list);
+static pthread_mutex_t priv_list_lock = PTHREAD_MUTEX_INITIALIZER;
+int mlx5_vdpa_logtype;
+
+static struct rte_vdpa_dev_ops mlx5_vdpa_ops = {
+	.get_queue_num = NULL,
+	.get_features = NULL,
+	.get_protocol_features = NULL,
+	.dev_conf = NULL,
+	.dev_close = NULL,
+	.set_vring_state = NULL,
+	.set_features = NULL,
+	.migration_done = NULL,
+	.get_vfio_group_fd = NULL,
+	.get_vfio_device_fd = NULL,
+	.get_notify_area = NULL,
+};
+
+/**
+ * DPDK callback to register a PCI device.
+ *
+ * This function spawns vdpa device out of a given PCI device.
+ *
+ * @param[in] pci_drv
+ *   PCI driver structure (mlx5_vpda_driver).
+ * @param[in] pci_dev
+ *   PCI device information.
+ *
+ * @return
+ *   0 on success, 1 to skip this driver, a negative errno value otherwise
+ *   and rte_errno is set.
+ */
+static int
+mlx5_vdpa_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
+		    struct rte_pci_device *pci_dev __rte_unused)
+{
+	struct ibv_device **ibv_list;
+	struct ibv_device *ibv_match = NULL;
+	struct mlx5_vdpa_priv *priv = NULL;
+	struct ibv_context *ctx = NULL;
+	int ret;
+
+	if (mlx5_class_get(pci_dev->device.devargs) != MLX5_CLASS_VDPA) {
+		DRV_LOG(DEBUG, "Skip probing - should be probed by other mlx5"
+			" driver.");
+		return 1;
+	}
+	errno = 0;
+	ibv_list = mlx5_glue->get_device_list(&ret);
+	if (!ibv_list) {
+		rte_errno = ENOSYS;
+		DRV_LOG(ERR, "Failed to get device list, is ib_uverbs loaded?");
+		return -rte_errno;
+	}
+	while (ret-- > 0) {
+		struct rte_pci_addr pci_addr;
+
+		DRV_LOG(DEBUG, "Checking device \"%s\"..", ibv_list[ret]->name);
+		if (mlx5_dev_to_pci_addr(ibv_list[ret]->ibdev_path, &pci_addr))
+			continue;
+		if (pci_dev->addr.domain != pci_addr.domain ||
+		    pci_dev->addr.bus != pci_addr.bus ||
+		    pci_dev->addr.devid != pci_addr.devid ||
+		    pci_dev->addr.function != pci_addr.function)
+			continue;
+		DRV_LOG(INFO, "PCI information matches for device \"%s\".",
+			ibv_list[ret]->name);
+		ibv_match = ibv_list[ret];
+		break;
+	}
+	mlx5_glue->free_device_list(ibv_list);
+	if (!ibv_match) {
+		DRV_LOG(ERR, "No matching IB device for PCI slot "
+			"%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 ".",
+			pci_dev->addr.domain, pci_dev->addr.bus,
+			pci_dev->addr.devid, pci_dev->addr.function);
+		rte_errno = ENOENT;
+		return -rte_errno;
+	}
+	ctx = mlx5_glue->dv_open_device(ibv_match);
+	if (!ctx) {
+		DRV_LOG(ERR, "Failed to open IB device \"%s\".",
+			ibv_match->name);
+		rte_errno = ENODEV;
+		return -rte_errno;
+	}
+	priv = rte_zmalloc("mlx5 vDPA device private", sizeof(*priv),
+			   RTE_CACHE_LINE_SIZE);
+	if (!priv) {
+		DRV_LOG(ERR, "Failed to allocate private memory.");
+		rte_errno = ENOMEM;
+		goto error;
+	}
+	priv->ctx = ctx;
+	priv->dev_addr.pci_addr = pci_dev->addr;
+	priv->dev_addr.type = PCI_ADDR;
+	priv->id = rte_vdpa_register_device(&priv->dev_addr, &mlx5_vdpa_ops);
+	if (priv->id < 0) {
+		DRV_LOG(ERR, "Failed to register vDPA device.");
+		rte_errno = rte_errno ? rte_errno : EINVAL;
+		goto error;
+	}
+	pthread_mutex_lock(&priv_list_lock);
+	TAILQ_INSERT_TAIL(&priv_list, priv, next);
+	pthread_mutex_unlock(&priv_list_lock);
+	return 0;
+
+error:
+	if (priv)
+		rte_free(priv);
+	if (ctx)
+		mlx5_glue->close_device(ctx);
+	return -rte_errno;
+}
+
+/**
+ * DPDK callback to remove a PCI device.
+ *
+ * This function removes all vDPA devices belong to a given PCI device.
+ *
+ * @param[in] pci_dev
+ *   Pointer to the PCI device.
+ *
+ * @return
+ *   0 on success, the function cannot fail.
+ */
+static int
+mlx5_vdpa_pci_remove(struct rte_pci_device *pci_dev)
+{
+	struct mlx5_vdpa_priv *priv = NULL;
+	int found = 0;
+
+	pthread_mutex_lock(&priv_list_lock);
+	TAILQ_FOREACH(priv, &priv_list, next) {
+		if (memcmp(&priv->dev_addr.pci_addr, &pci_dev->addr,
+			   sizeof(pci_dev->addr)) == 0) {
+			found = 1;
+			break;
+		}
+	}
+	if (found) {
+		TAILQ_REMOVE(&priv_list, priv, next);
+		mlx5_glue->close_device(priv->ctx);
+		rte_free(priv);
+	}
+	pthread_mutex_unlock(&priv_list_lock);
+	return 0;
+}
+
+static const struct rte_pci_id mlx5_vdpa_pci_id_map[] = {
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+			       PCI_DEVICE_ID_MELLANOX_CONNECTX5BF)
+	},
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+			       PCI_DEVICE_ID_MELLANOX_CONNECTX5BFVF)
+	},
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+				PCI_DEVICE_ID_MELLANOX_CONNECTX6)
+	},
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+				PCI_DEVICE_ID_MELLANOX_CONNECTX6VF)
+	},
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+				PCI_DEVICE_ID_MELLANOX_CONNECTX6DX)
+	},
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+				PCI_DEVICE_ID_MELLANOX_CONNECTX6DXVF)
+	},
+	{
+		.vendor_id = 0
+	}
+};
+
+static struct rte_pci_driver mlx5_vdpa_driver = {
+	.driver = {
+		.name = "mlx5_vdpa",
+	},
+	.id_table = mlx5_vdpa_pci_id_map,
+	.probe = mlx5_vdpa_pci_probe,
+	.remove = mlx5_vdpa_pci_remove,
+	.drv_flags = 0,
+};
+
+/**
+ * Driver initialization routine.
+ */
+RTE_INIT(rte_mlx5_vdpa_init)
+{
+	/* Initialize common log type. */
+	mlx5_vdpa_logtype = rte_log_register("pmd.vdpa.mlx5");
+	if (mlx5_vdpa_logtype >= 0)
+		rte_log_set_level(mlx5_vdpa_logtype, RTE_LOG_NOTICE);
+	if (mlx5_glue)
+		rte_pci_register(&mlx5_vdpa_driver);
+}
+
+RTE_PMD_EXPORT_NAME(net_mlx5_vdpa, __COUNTER__);
+RTE_PMD_REGISTER_PCI_TABLE(net_mlx5_vdpa, mlx5_vdpa_pci_id_map);
+RTE_PMD_REGISTER_KMOD_DEP(net_mlx5_vdpa, "* ib_uverbs & mlx5_core & mlx5_ib");

drivers/vdpa/mlx5/mlx5_vdpa_utils.h

@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2019 Mellanox Technologies, Ltd
+ */
+
+#ifndef RTE_PMD_MLX5_VDPA_UTILS_H_
+#define RTE_PMD_MLX5_VDPA_UTILS_H_
+
+#include <mlx5_common.h>
+
+
+extern int mlx5_vdpa_logtype;
+
+#define MLX5_VDPA_LOG_PREFIX "mlx5_vdpa"
+/* Generic printf()-like logging macro with automatic line feed. */
+#define DRV_LOG(level, ...) \
+	PMD_DRV_LOG_(level, mlx5_vdpa_logtype, MLX5_VDPA_LOG_PREFIX, \
+		__VA_ARGS__ PMD_DRV_LOG_STRIP PMD_DRV_LOG_OPAREN, \
+		PMD_DRV_LOG_CPAREN)
+
+#endif /* RTE_PMD_MLX5_VDPA_UTILS_H_ */

drivers/vdpa/mlx5/rte_pmd_mlx5_vdpa_version.map

@@ -0,0 +1,3 @@
+DPDK_20.02 {
+	local: *;
+};

mk/rte.app.mk

@@ -196,18 +196,21 @@ endif
 _LDLIBS-$(CONFIG_RTE_LIBRTE_LIO_PMD)        += -lrte_pmd_lio
 _LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_MEMIF)      += -lrte_pmd_memif
 _LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -lrte_pmd_mlx4
-_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX5_PMD)       += -lrte_common_mlx5
+ifeq ($(findstring y,$(CONFIG_RTE_LIBRTE_MLX5_PMD)$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD)),y)
+_LDLIBS-y                                   += -lrte_common_mlx5
+endif
 _LDLIBS-$(CONFIG_RTE_LIBRTE_MLX5_PMD)       += -lrte_pmd_mlx5
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD)  += -lrte_pmd_mlx5_vdpa
 ifeq ($(CONFIG_RTE_IBVERBS_LINK_DLOPEN),y)
-_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -ldl
+_LDLIBS-y                                   += -ldl
-_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX5_PMD)       += -ldl
 else ifeq ($(CONFIG_RTE_IBVERBS_LINK_STATIC),y)
 LIBS_IBVERBS_STATIC = $(shell $(RTE_SDK)/buildtools/options-ibverbs-static.sh)
-_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += $(LIBS_IBVERBS_STATIC)
+_LDLIBS-y                                   += $(LIBS_IBVERBS_STATIC)
-_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX5_PMD)       += $(LIBS_IBVERBS_STATIC)
 else
+ifeq ($(findstring y,$(CONFIG_RTE_LIBRTE_MLX5_PMD)$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD)),y)
+_LDLIBS-y                                   += -libverbs -lmlx5
+endif
 _LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -libverbs -lmlx4
-_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX5_PMD)       += -libverbs -lmlx5
 endif
 _LDLIBS-$(CONFIG_RTE_LIBRTE_MVPP2_PMD)      += -lrte_pmd_mvpp2
 _LDLIBS-$(CONFIG_RTE_LIBRTE_MVNETA_PMD)     += -lrte_pmd_mvneta