diff --git a/drivers/common/mlx5/Makefile b/drivers/common/mlx5/Makefile
index aeacce3..60bec3f 100644
--- a/drivers/common/mlx5/Makefile
+++ b/drivers/common/mlx5/Makefile
@@ -16,6 +16,7 @@ SRCS-y += mlx5_glue.c
 endif
 SRCS-y += mlx5_devx_cmds.c
 SRCS-y += mlx5_common.c
+SRCS-y += mlx5_nl.c
 ifeq ($(CONFIG_RTE_IBVERBS_LINK_DLOPEN),y)
 INSTALL-y-lib += $(LIB_GLUE)
 endif
@@ -42,7 +43,7 @@ else
 LDLIBS += -libverbs -lmlx5
 endif
 
-LDLIBS += -lrte_eal -lrte_pci -lrte_kvargs
+LDLIBS += -lrte_eal -lrte_pci -lrte_kvargs -lrte_net
 
 # A few warnings cannot be avoided in external headers.
 CFLAGS += -Wno-error=cast-qual -DNDEBUG -UPEDANTIC
diff --git a/drivers/common/mlx5/meson.build b/drivers/common/mlx5/meson.build
index 8291a92..46c7c3bb 100644
--- a/drivers/common/mlx5/meson.build
+++ b/drivers/common/mlx5/meson.build
@@ -42,6 +42,7 @@ if build
 	sources = files(
 		'mlx5_devx_cmds.c',
 		'mlx5_common.c',
+		'mlx5_nl.c',
 	)
 	if not pmd_dlopen
 		sources += files('mlx5_glue.c')
diff --git a/drivers/common/mlx5/mlx5_common.c b/drivers/common/mlx5/mlx5_common.c
index f756b6b..7ca6136 100644
--- a/drivers/common/mlx5/mlx5_common.c
+++ b/drivers/common/mlx5/mlx5_common.c
@@ -107,6 +107,61 @@
 	return ret;
 }
 
+/**
+ * Extract port name, as a number, from sysfs or netlink information.
+ *
+ * @param[in] port_name_in
+ *   String representing the port name.
+ * @param[out] port_info_out
+ *   Port information, including port name as a number and port name
+ *   type if recognized
+ *
+ * @return
+ *   port_name field set according to recognized name format.
+ */
+void
+mlx5_translate_port_name(const char *port_name_in,
+			 struct mlx5_switch_info *port_info_out)
+{
+	char pf_c1, pf_c2, vf_c1, vf_c2;
+	char *end;
+	int sc_items;
+
+	/*
+	 * Check for port-name as a string of the form pf0vf0
+	 * (support kernel ver >= 5.0 or OFED ver >= 4.6).
+	 */
+	sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
+			  &pf_c1, &pf_c2, &port_info_out->pf_num,
+			  &vf_c1, &vf_c2, &port_info_out->port_name);
+	if (sc_items == 6 &&
+	    pf_c1 == 'p' && pf_c2 == 'f' &&
+	    vf_c1 == 'v' && vf_c2 == 'f') {
+		port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF;
+		return;
+	}
+	/*
+	 * Check for port-name as a string of the form p0
+	 * (support kernel ver >= 5.0, or OFED ver >= 4.6).
+	 */
+	sc_items = sscanf(port_name_in, "%c%d",
+			  &pf_c1, &port_info_out->port_name);
+	if (sc_items == 2 && pf_c1 == 'p') {
+		port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
+		return;
+	}
+	/* Check for port-name as a number (support kernel ver < 5.0 */
+	errno = 0;
+	port_info_out->port_name = strtol(port_name_in, &end, 0);
+	if (!errno &&
+	    (size_t)(end - port_name_in) == strlen(port_name_in)) {
+		port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY;
+		return;
+	}
+	port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
+	return;
+}
+
 #ifdef RTE_IBVERBS_LINK_DLOPEN
 
 /**
diff --git a/drivers/common/mlx5/mlx5_common.h b/drivers/common/mlx5/mlx5_common.h
index aeaa7b9..ac65105 100644
--- a/drivers/common/mlx5/mlx5_common.h
+++ b/drivers/common/mlx5/mlx5_common.h
@@ -18,6 +18,35 @@
 
 
 /*
+ * Compilation workaround for PPC64 when AltiVec is fully enabled, e.g. std=c11.
+ * Otherwise there would be a type conflict between stdbool and altivec.
+ */
+#if defined(__PPC64__) && !defined(__APPLE_ALTIVEC__)
+#undef bool
+/* redefine as in stdbool.h */
+#define bool _Bool
+#endif
+
+/* Bit-field manipulation. */
+#define BITFIELD_DECLARE(bf, type, size) \
+	type bf[(((size_t)(size) / (sizeof(type) * CHAR_BIT)) + \
+		 !!((size_t)(size) % (sizeof(type) * CHAR_BIT)))]
+#define BITFIELD_DEFINE(bf, type, size) \
+	BITFIELD_DECLARE((bf), type, (size)) = { 0 }
+#define BITFIELD_SET(bf, b) \
+	(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)), \
+	 (void)((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] |= \
+		((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT)))))
+#define BITFIELD_RESET(bf, b) \
+	(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)), \
+	 (void)((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] &= \
+		~((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT)))))
+#define BITFIELD_ISSET(bf, b) \
+	(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)), \
+	 !!(((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] & \
+	     ((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT))))))
+
+/*
  * Helper macros to work around __VA_ARGS__ limitations in a C99 compliant
  * manner.
  */
@@ -112,6 +141,33 @@ enum {
 	PCI_DEVICE_ID_MELLANOX_CONNECTX6DXVF = 0x101e,
 };
 
+/* Maximum number of simultaneous unicast MAC addresses. */
+#define MLX5_MAX_UC_MAC_ADDRESSES 128
+/* Maximum number of simultaneous Multicast MAC addresses. */
+#define MLX5_MAX_MC_MAC_ADDRESSES 128
+/* Maximum number of simultaneous MAC addresses. */
+#define MLX5_MAX_MAC_ADDRESSES \
+	(MLX5_MAX_UC_MAC_ADDRESSES + MLX5_MAX_MC_MAC_ADDRESSES)
+
+/* Recognized Infiniband device physical port name types. */
+enum mlx5_nl_phys_port_name_type {
+	MLX5_PHYS_PORT_NAME_TYPE_NOTSET = 0, /* Not set. */
+	MLX5_PHYS_PORT_NAME_TYPE_LEGACY, /* before kernel ver < 5.0 */
+	MLX5_PHYS_PORT_NAME_TYPE_UPLINK, /* p0, kernel ver >= 5.0 */
+	MLX5_PHYS_PORT_NAME_TYPE_PFVF, /* pf0vf0, kernel ver >= 5.0 */
+	MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN, /* Unrecognized. */
+};
+
+/** Switch information returned by mlx5_nl_switch_info(). */
+struct mlx5_switch_info {
+	uint32_t master:1; /**< Master device. */
+	uint32_t representor:1; /**< Representor device. */
+	enum mlx5_nl_phys_port_name_type name_type; /** < Port name type. */
+	int32_t pf_num; /**< PF number (valid for pfxvfx format only). */
+	int32_t port_name; /**< Representor port name. */
+	uint64_t switch_id; /**< Switch identifier. */
+};
+
 /* CQE status. */
 enum mlx5_cqe_status {
 	MLX5_CQE_STATUS_SW_OWN = -1,
@@ -152,5 +208,7 @@ enum mlx5_cqe_status {
 
 int mlx5_dev_to_pci_addr(const char *dev_path, struct rte_pci_addr *pci_addr);
 int mlx5_vdpa_mode_selected(struct rte_devargs *devargs);
+void mlx5_translate_port_name(const char *port_name_in,
+			      struct mlx5_switch_info *port_info_out);
 
 #endif /* RTE_PMD_MLX5_COMMON_H_ */
diff --git a/drivers/common/mlx5/mlx5_nl.c b/drivers/common/mlx5/mlx5_nl.c
new file mode 100644
index 0000000..b4fc053
--- /dev/null
+++ b/drivers/common/mlx5/mlx5_nl.c
@@ -0,0 +1,1337 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2018 6WIND S.A.
+ * Copyright 2018 Mellanox Technologies, Ltd
+ */
+
+#include <errno.h>
+#include <linux/if_link.h>
+#include <linux/rtnetlink.h>
+#include <net/if.h>
+#include <rdma/rdma_netlink.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdalign.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <stdbool.h>
+
+#include <rte_errno.h>
+#include <rte_atomic.h>
+
+#include "mlx5_nl.h"
+#include "mlx5_common_utils.h"
+
+/* Size of the buffer to receive kernel messages */
+#define MLX5_NL_BUF_SIZE (32 * 1024)
+/* Send buffer size for the Netlink socket */
+#define MLX5_SEND_BUF_SIZE 32768
+/* Receive buffer size for the Netlink socket */
+#define MLX5_RECV_BUF_SIZE 32768
+
+/** Parameters of VLAN devices created by driver. */
+#define MLX5_VMWA_VLAN_DEVICE_PFX "evmlx"
+/*
+ * Define NDA_RTA as defined in iproute2 sources.
+ *
+ * see in iproute2 sources file include/libnetlink.h
+ */
+#ifndef MLX5_NDA_RTA
+#define MLX5_NDA_RTA(r) \
+	((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
+#endif
+/*
+ * Define NLMSG_TAIL as defined in iproute2 sources.
+ *
+ * see in iproute2 sources file include/libnetlink.h
+ */
+#ifndef NLMSG_TAIL
+#define NLMSG_TAIL(nmsg) \
+	((struct rtattr *)(((char *)(nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
+#endif
+/*
+ * The following definitions are normally found in rdma/rdma_netlink.h,
+ * however they are so recent that most systems do not expose them yet.
+ */
+#ifndef HAVE_RDMA_NL_NLDEV
+#define RDMA_NL_NLDEV 5
+#endif
+#ifndef HAVE_RDMA_NLDEV_CMD_GET
+#define RDMA_NLDEV_CMD_GET 1
+#endif
+#ifndef HAVE_RDMA_NLDEV_CMD_PORT_GET
+#define RDMA_NLDEV_CMD_PORT_GET 5
+#endif
+#ifndef HAVE_RDMA_NLDEV_ATTR_DEV_INDEX
+#define RDMA_NLDEV_ATTR_DEV_INDEX 1
+#endif
+#ifndef HAVE_RDMA_NLDEV_ATTR_DEV_NAME
+#define RDMA_NLDEV_ATTR_DEV_NAME 2
+#endif
+#ifndef HAVE_RDMA_NLDEV_ATTR_PORT_INDEX
+#define RDMA_NLDEV_ATTR_PORT_INDEX 3
+#endif
+#ifndef HAVE_RDMA_NLDEV_ATTR_NDEV_INDEX
+#define RDMA_NLDEV_ATTR_NDEV_INDEX 50
+#endif
+
+/* These are normally found in linux/if_link.h. */
+#ifndef HAVE_IFLA_NUM_VF
+#define IFLA_NUM_VF 21
+#endif
+#ifndef HAVE_IFLA_EXT_MASK
+#define IFLA_EXT_MASK 29
+#endif
+#ifndef HAVE_IFLA_PHYS_SWITCH_ID
+#define IFLA_PHYS_SWITCH_ID 36
+#endif
+#ifndef HAVE_IFLA_PHYS_PORT_NAME
+#define IFLA_PHYS_PORT_NAME 38
+#endif
+
+/* Add/remove MAC address through Netlink */
+struct mlx5_nl_mac_addr {
+	struct rte_ether_addr (*mac)[];
+	/**< MAC address handled by the device. */
+	int mac_n; /**< Number of addresses in the array. */
+};
+
+#define MLX5_NL_CMD_GET_IB_NAME (1 << 0)
+#define MLX5_NL_CMD_GET_IB_INDEX (1 << 1)
+#define MLX5_NL_CMD_GET_NET_INDEX (1 << 2)
+#define MLX5_NL_CMD_GET_PORT_INDEX (1 << 3)
+
+/** Data structure used by mlx5_nl_cmdget_cb(). */
+struct mlx5_nl_ifindex_data {
+	const char *name; /**< IB device name (in). */
+	uint32_t flags; /**< found attribute flags (out). */
+	uint32_t ibindex; /**< IB device index (out). */
+	uint32_t ifindex; /**< Network interface index (out). */
+	uint32_t portnum; /**< IB device max port number (out). */
+};
+
+rte_atomic32_t atomic_sn = RTE_ATOMIC32_INIT(0);
+
+/* Generate Netlink sequence number. */
+#define MLX5_NL_SN_GENERATE ((uint32_t)rte_atomic32_add_return(&atomic_sn, 1))
+
+/**
+ * Opens a Netlink socket.
+ *
+ * @param protocol
+ *   Netlink protocol (e.g. NETLINK_ROUTE, NETLINK_RDMA).
+ *
+ * @return
+ *   A file descriptor on success, a negative errno value otherwise and
+ *   rte_errno is set.
+ */
+int
+mlx5_nl_init(int protocol)
+{
+	int fd;
+	int sndbuf_size = MLX5_SEND_BUF_SIZE;
+	int rcvbuf_size = MLX5_RECV_BUF_SIZE;
+	struct sockaddr_nl local = {
+		.nl_family = AF_NETLINK,
+	};
+	int ret;
+
+	fd = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, protocol);
+	if (fd == -1) {
+		rte_errno = errno;
+		return -rte_errno;
+	}
+	ret = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &sndbuf_size, sizeof(int));
+	if (ret == -1) {
+		rte_errno = errno;
+		goto error;
+	}
+	ret = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf_size, sizeof(int));
+	if (ret == -1) {
+		rte_errno = errno;
+		goto error;
+	}
+	ret = bind(fd, (struct sockaddr *)&local, sizeof(local));
+	if (ret == -1) {
+		rte_errno = errno;
+		goto error;
+	}
+	return fd;
+error:
+	close(fd);
+	return -rte_errno;
+}
+
+/**
+ * Send a request message to the kernel on the Netlink socket.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] nh
+ *   The Netlink message send to the kernel.
+ * @param[in] ssn
+ *   Sequence number.
+ * @param[in] req
+ *   Pointer to the request structure.
+ * @param[in] len
+ *   Length of the request in bytes.
+ *
+ * @return
+ *   The number of sent bytes on success, a negative errno value otherwise and
+ *   rte_errno is set.
+ */
+static int
+mlx5_nl_request(int nlsk_fd, struct nlmsghdr *nh, uint32_t sn, void *req,
+		int len)
+{
+	struct sockaddr_nl sa = {
+		.nl_family = AF_NETLINK,
+	};
+	struct iovec iov[2] = {
+		{ .iov_base = nh, .iov_len = sizeof(*nh), },
+		{ .iov_base = req, .iov_len = len, },
+	};
+	struct msghdr msg = {
+		.msg_name = &sa,
+		.msg_namelen = sizeof(sa),
+		.msg_iov = iov,
+		.msg_iovlen = 2,
+	};
+	int send_bytes;
+
+	nh->nlmsg_pid = 0; /* communication with the kernel uses pid 0 */
+	nh->nlmsg_seq = sn;
+	send_bytes = sendmsg(nlsk_fd, &msg, 0);
+	if (send_bytes < 0) {
+		rte_errno = errno;
+		return -rte_errno;
+	}
+	return send_bytes;
+}
+
+/**
+ * Send a message to the kernel on the Netlink socket.
+ *
+ * @param[in] nlsk_fd
+ *   The Netlink socket file descriptor used for communication.
+ * @param[in] nh
+ *   The Netlink message send to the kernel.
+ * @param[in] sn
+ *   Sequence number.
+ *
+ * @return
+ *   The number of sent bytes on success, a negative errno value otherwise and
+ *   rte_errno is set.
+ */
+static int
+mlx5_nl_send(int nlsk_fd, struct nlmsghdr *nh, uint32_t sn)
+{
+	struct sockaddr_nl sa = {
+		.nl_family = AF_NETLINK,
+	};
+	struct iovec iov = {
+		.iov_base = nh,
+		.iov_len = nh->nlmsg_len,
+	};
+	struct msghdr msg = {
+		.msg_name = &sa,
+		.msg_namelen = sizeof(sa),
+		.msg_iov = &iov,
+		.msg_iovlen = 1,
+	};
+	int send_bytes;
+
+	nh->nlmsg_pid = 0; /* communication with the kernel uses pid 0 */
+	nh->nlmsg_seq = sn;
+	send_bytes = sendmsg(nlsk_fd, &msg, 0);
+	if (send_bytes < 0) {
+		rte_errno = errno;
+		return -rte_errno;
+	}
+	return send_bytes;
+}
+
+/**
+ * Receive a message from the kernel on the Netlink socket, following
+ * mlx5_nl_send().
+ *
+ * @param[in] nlsk_fd
+ *   The Netlink socket file descriptor used for communication.
+ * @param[in] sn
+ *   Sequence number.
+ * @param[in] cb
+ *   The callback function to call for each Netlink message received.
+ * @param[in, out] arg
+ *   Custom arguments for the callback.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_nl_recv(int nlsk_fd, uint32_t sn, int (*cb)(struct nlmsghdr *, void *arg),
+	     void *arg)
+{
+	struct sockaddr_nl sa;
+	char buf[MLX5_RECV_BUF_SIZE];
+	struct iovec iov = {
+		.iov_base = buf,
+		.iov_len = sizeof(buf),
+	};
+	struct msghdr msg = {
+		.msg_name = &sa,
+		.msg_namelen = sizeof(sa),
+		.msg_iov = &iov,
+		/* One message at a time */
+		.msg_iovlen = 1,
+	};
+	int multipart = 0;
+	int ret = 0;
+
+	do {
+		struct nlmsghdr *nh;
+		int recv_bytes = 0;
+
+		do {
+			recv_bytes = recvmsg(nlsk_fd, &msg, 0);
+			if (recv_bytes == -1) {
+				rte_errno = errno;
+				return -rte_errno;
+			}
+			nh = (struct nlmsghdr *)buf;
+		} while (nh->nlmsg_seq != sn);
+		for (;
+		     NLMSG_OK(nh, (unsigned int)recv_bytes);
+		     nh = NLMSG_NEXT(nh, recv_bytes)) {
+			if (nh->nlmsg_type == NLMSG_ERROR) {
+				struct nlmsgerr *err_data = NLMSG_DATA(nh);
+
+				if (err_data->error < 0) {
+					rte_errno = -err_data->error;
+					return -rte_errno;
+				}
+				/* Ack message. */
+				return 0;
+			}
+			/* Multi-part msgs and their trailing DONE message. */
+			if (nh->nlmsg_flags & NLM_F_MULTI) {
+				if (nh->nlmsg_type == NLMSG_DONE)
+					return 0;
+				multipart = 1;
+			}
+			if (cb) {
+				ret = cb(nh, arg);
+				if (ret < 0)
+					return ret;
+			}
+		}
+	} while (multipart);
+	return ret;
+}
+
+/**
+ * Parse Netlink message to retrieve the bridge MAC address.
+ *
+ * @param nh
+ *   Pointer to Netlink Message Header.
+ * @param arg
+ *   PMD data register with this callback.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_nl_mac_addr_cb(struct nlmsghdr *nh, void *arg)
+{
+	struct mlx5_nl_mac_addr *data = arg;
+	struct ndmsg *r = NLMSG_DATA(nh);
+	struct rtattr *attribute;
+	int len;
+
+	len = nh->nlmsg_len - NLMSG_LENGTH(sizeof(*r));
+	for (attribute = MLX5_NDA_RTA(r);
+	     RTA_OK(attribute, len);
+	     attribute = RTA_NEXT(attribute, len)) {
+		if (attribute->rta_type == NDA_LLADDR) {
+			if (data->mac_n == MLX5_MAX_MAC_ADDRESSES) {
+				DRV_LOG(WARNING,
+					"not enough room to finalize the"
+					" request");
+				rte_errno = ENOMEM;
+				return -rte_errno;
+			}
+#ifndef NDEBUG
+			char m[18];
+
+			rte_ether_format_addr(m, 18, RTA_DATA(attribute));
+			DRV_LOG(DEBUG, "bridge MAC address %s", m);
+#endif
+			memcpy(&(*data->mac)[data->mac_n++],
+			       RTA_DATA(attribute), RTE_ETHER_ADDR_LEN);
+		}
+	}
+	return 0;
+}
+
+/**
+ * Get bridge MAC addresses.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] iface_idx
+ *   Net device interface index.
+ * @param mac[out]
+ *   Pointer to the array table of MAC addresses to fill.
+ *   Its size should be of MLX5_MAX_MAC_ADDRESSES.
+ * @param mac_n[out]
+ *   Number of entries filled in MAC array.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_nl_mac_addr_list(int nlsk_fd, unsigned int iface_idx,
+		      struct rte_ether_addr (*mac)[], int *mac_n)
+{
+	struct {
+		struct nlmsghdr	hdr;
+		struct ifinfomsg ifm;
+	} req = {
+		.hdr = {
+			.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
+			.nlmsg_type = RTM_GETNEIGH,
+			.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
+		},
+		.ifm = {
+			.ifi_family = PF_BRIDGE,
+			.ifi_index = iface_idx,
+		},
+	};
+	struct mlx5_nl_mac_addr data = {
+		.mac = mac,
+		.mac_n = 0,
+	};
+	uint32_t sn = MLX5_NL_SN_GENERATE;
+	int ret;
+
+	if (nlsk_fd == -1)
+		return 0;
+	ret = mlx5_nl_request(nlsk_fd, &req.hdr, sn, &req.ifm,
+			      sizeof(struct ifinfomsg));
+	if (ret < 0)
+		goto error;
+	ret = mlx5_nl_recv(nlsk_fd, sn, mlx5_nl_mac_addr_cb, &data);
+	if (ret < 0)
+		goto error;
+	*mac_n = data.mac_n;
+	return 0;
+error:
+	DRV_LOG(DEBUG, "Interface %u cannot retrieve MAC address list %s",
+		iface_idx, strerror(rte_errno));
+	return -rte_errno;
+}
+
+/**
+ * Modify the MAC address neighbour table with Netlink.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] iface_idx
+ *   Net device interface index.
+ * @param mac
+ *   MAC address to consider.
+ * @param add
+ *   1 to add the MAC address, 0 to remove the MAC address.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_nl_mac_addr_modify(int nlsk_fd, unsigned int iface_idx,
+			struct rte_ether_addr *mac, int add)
+{
+	struct {
+		struct nlmsghdr hdr;
+		struct ndmsg ndm;
+		struct rtattr rta;
+		uint8_t buffer[RTE_ETHER_ADDR_LEN];
+	} req = {
+		.hdr = {
+			.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)),
+			.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE |
+				NLM_F_EXCL | NLM_F_ACK,
+			.nlmsg_type = add ? RTM_NEWNEIGH : RTM_DELNEIGH,
+		},
+		.ndm = {
+			.ndm_family = PF_BRIDGE,
+			.ndm_state = NUD_NOARP | NUD_PERMANENT,
+			.ndm_ifindex = iface_idx,
+			.ndm_flags = NTF_SELF,
+		},
+		.rta = {
+			.rta_type = NDA_LLADDR,
+			.rta_len = RTA_LENGTH(RTE_ETHER_ADDR_LEN),
+		},
+	};
+	uint32_t sn = MLX5_NL_SN_GENERATE;
+	int ret;
+
+	if (nlsk_fd == -1)
+		return 0;
+	memcpy(RTA_DATA(&req.rta), mac, RTE_ETHER_ADDR_LEN);
+	req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
+		RTA_ALIGN(req.rta.rta_len);
+	ret = mlx5_nl_send(nlsk_fd, &req.hdr, sn);
+	if (ret < 0)
+		goto error;
+	ret = mlx5_nl_recv(nlsk_fd, sn, NULL, NULL);
+	if (ret < 0)
+		goto error;
+	return 0;
+error:
+	DRV_LOG(DEBUG,
+		"Interface %u cannot %s MAC address"
+		" %02X:%02X:%02X:%02X:%02X:%02X %s",
+		iface_idx,
+		add ? "add" : "remove",
+		mac->addr_bytes[0], mac->addr_bytes[1],
+		mac->addr_bytes[2], mac->addr_bytes[3],
+		mac->addr_bytes[4], mac->addr_bytes[5],
+		strerror(rte_errno));
+	return -rte_errno;
+}
+
+/**
+ * Modify the VF MAC address neighbour table with Netlink.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] iface_idx
+ *   Net device interface index.
+ * @param mac
+ *    MAC address to consider.
+ * @param vf_index
+ *    VF index.
+ *
+ * @return
+ *    0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_nl_vf_mac_addr_modify(int nlsk_fd, unsigned int iface_idx,
+			   struct rte_ether_addr *mac, int vf_index)
+{
+	int ret;
+	struct {
+		struct nlmsghdr hdr;
+		struct ifinfomsg ifm;
+		struct rtattr vf_list_rta;
+		struct rtattr vf_info_rta;
+		struct rtattr vf_mac_rta;
+		struct ifla_vf_mac ivm;
+	} req = {
+		.hdr = {
+			.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
+			.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
+			.nlmsg_type = RTM_BASE,
+		},
+		.ifm = {
+			.ifi_index = iface_idx,
+		},
+		.vf_list_rta = {
+			.rta_type = IFLA_VFINFO_LIST,
+			.rta_len = RTA_ALIGN(RTA_LENGTH(0)),
+		},
+		.vf_info_rta = {
+			.rta_type = IFLA_VF_INFO,
+			.rta_len = RTA_ALIGN(RTA_LENGTH(0)),
+		},
+		.vf_mac_rta = {
+			.rta_type = IFLA_VF_MAC,
+		},
+	};
+	struct ifla_vf_mac ivm = {
+		.vf = vf_index,
+	};
+	uint32_t sn = MLX5_NL_SN_GENERATE;
+
+	memcpy(&ivm.mac, mac, RTE_ETHER_ADDR_LEN);
+	memcpy(RTA_DATA(&req.vf_mac_rta), &ivm, sizeof(ivm));
+
+	req.vf_mac_rta.rta_len = RTA_LENGTH(sizeof(ivm));
+	req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
+		RTA_ALIGN(req.vf_list_rta.rta_len) +
+		RTA_ALIGN(req.vf_info_rta.rta_len) +
+		RTA_ALIGN(req.vf_mac_rta.rta_len);
+	req.vf_list_rta.rta_len = RTE_PTR_DIFF(NLMSG_TAIL(&req.hdr),
+					       &req.vf_list_rta);
+	req.vf_info_rta.rta_len = RTE_PTR_DIFF(NLMSG_TAIL(&req.hdr),
+					       &req.vf_info_rta);
+
+	if (nlsk_fd < 0)
+		return -1;
+	ret = mlx5_nl_send(nlsk_fd, &req.hdr, sn);
+	if (ret < 0)
+		goto error;
+	ret = mlx5_nl_recv(nlsk_fd, sn, NULL, NULL);
+	if (ret < 0)
+		goto error;
+	return 0;
+error:
+	DRV_LOG(ERR,
+		"representor %u cannot set VF MAC address "
+		"%02X:%02X:%02X:%02X:%02X:%02X : %s",
+		vf_index,
+		mac->addr_bytes[0], mac->addr_bytes[1],
+		mac->addr_bytes[2], mac->addr_bytes[3],
+		mac->addr_bytes[4], mac->addr_bytes[5],
+		strerror(rte_errno));
+	return -rte_errno;
+}
+
+/**
+ * Add a MAC address.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] iface_idx
+ *   Net device interface index.
+ * @param mac_own
+ *   BITFIELD_DECLARE array to store the mac.
+ * @param mac
+ *   MAC address to register.
+ * @param index
+ *   MAC address index.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_nl_mac_addr_add(int nlsk_fd, unsigned int iface_idx,
+		     uint64_t *mac_own, struct rte_ether_addr *mac,
+		     uint32_t index)
+{
+	int ret;
+
+	ret = mlx5_nl_mac_addr_modify(nlsk_fd, iface_idx, mac, 1);
+	if (!ret)
+		BITFIELD_SET(mac_own, index);
+	if (ret == -EEXIST)
+		return 0;
+	return ret;
+}
+
+/**
+ * Remove a MAC address.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] iface_idx
+ *   Net device interface index.
+ * @param mac_own
+ *   BITFIELD_DECLARE array to store the mac.
+ * @param mac
+ *   MAC address to remove.
+ * @param index
+ *   MAC address index.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_nl_mac_addr_remove(int nlsk_fd, unsigned int iface_idx, uint64_t *mac_own,
+			struct rte_ether_addr *mac, uint32_t index)
+{
+	BITFIELD_RESET(mac_own, index);
+	return mlx5_nl_mac_addr_modify(nlsk_fd, iface_idx, mac, 0);
+}
+
+/**
+ * Synchronize Netlink bridge table to the internal table.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] iface_idx
+ *   Net device interface index.
+ * @param mac_addrs
+ *   Mac addresses array to sync.
+ * @param n
+ *   @p mac_addrs array size.
+ */
+void
+mlx5_nl_mac_addr_sync(int nlsk_fd, unsigned int iface_idx,
+		      struct rte_ether_addr *mac_addrs, int n)
+{
+	struct rte_ether_addr macs[n];
+	int macs_n = 0;
+	int i;
+	int ret;
+
+	ret = mlx5_nl_mac_addr_list(nlsk_fd, iface_idx, &macs, &macs_n);
+	if (ret)
+		return;
+	for (i = 0; i != macs_n; ++i) {
+		int j;
+
+		/* Verify the address is not in the array yet. */
+		for (j = 0; j != n; ++j)
+			if (rte_is_same_ether_addr(&macs[i], &mac_addrs[j]))
+				break;
+		if (j != n)
+			continue;
+		/* Find the first entry available. */
+		for (j = 0; j != n; ++j) {
+			if (rte_is_zero_ether_addr(&mac_addrs[j])) {
+				mac_addrs[j] = macs[i];
+				break;
+			}
+		}
+	}
+}
+
+/**
+ * Flush all added MAC addresses.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] iface_idx
+ *   Net device interface index.
+ * @param[in] mac_addrs
+ *   Mac addresses array to flush.
+ * @param n
+ *   @p mac_addrs array size.
+ * @param mac_own
+ *   BITFIELD_DECLARE array to store the mac.
+ */
+void
+mlx5_nl_mac_addr_flush(int nlsk_fd, unsigned int iface_idx,
+		       struct rte_ether_addr *mac_addrs, int n,
+		       uint64_t *mac_own)
+{
+	int i;
+
+	for (i = n - 1; i >= 0; --i) {
+		struct rte_ether_addr *m = &mac_addrs[i];
+
+		if (BITFIELD_ISSET(mac_own, i))
+			mlx5_nl_mac_addr_remove(nlsk_fd, iface_idx, mac_own, m,
+						i);
+	}
+}
+
+/**
+ * Enable promiscuous / all multicast mode through Netlink.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] iface_idx
+ *   Net device interface index.
+ * @param flags
+ *   IFF_PROMISC for promiscuous, IFF_ALLMULTI for allmulti.
+ * @param enable
+ *   Nonzero to enable, disable otherwise.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_nl_device_flags(int nlsk_fd, unsigned int iface_idx, uint32_t flags,
+		     int enable)
+{
+	struct {
+		struct nlmsghdr hdr;
+		struct ifinfomsg ifi;
+	} req = {
+		.hdr = {
+			.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
+			.nlmsg_type = RTM_NEWLINK,
+			.nlmsg_flags = NLM_F_REQUEST,
+		},
+		.ifi = {
+			.ifi_flags = enable ? flags : 0,
+			.ifi_change = flags,
+			.ifi_index = iface_idx,
+		},
+	};
+	uint32_t sn = MLX5_NL_SN_GENERATE;
+	int ret;
+
+	assert(!(flags & ~(IFF_PROMISC | IFF_ALLMULTI)));
+	if (nlsk_fd < 0)
+		return 0;
+	ret = mlx5_nl_send(nlsk_fd, &req.hdr, sn);
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+/**
+ * Enable promiscuous mode through Netlink.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] iface_idx
+ *   Net device interface index.
+ * @param enable
+ *   Nonzero to enable, disable otherwise.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_nl_promisc(int nlsk_fd, unsigned int iface_idx, int enable)
+{
+	int ret = mlx5_nl_device_flags(nlsk_fd, iface_idx, IFF_PROMISC, enable);
+
+	if (ret)
+		DRV_LOG(DEBUG,
+			"Interface %u cannot %s promisc mode: Netlink error %s",
+			iface_idx, enable ? "enable" : "disable",
+			strerror(rte_errno));
+	return ret;
+}
+
+/**
+ * Enable all multicast mode through Netlink.
+ *
+ * @param[in] nlsk_fd
+ *   Netlink socket file descriptor.
+ * @param[in] iface_idx
+ *   Net device interface index.
+ * @param enable
+ *   Nonzero to enable, disable otherwise.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_nl_allmulti(int nlsk_fd, unsigned int iface_idx, int enable)
+{
+	int ret = mlx5_nl_device_flags(nlsk_fd, iface_idx, IFF_ALLMULTI,
+				       enable);
+
+	if (ret)
+		DRV_LOG(DEBUG,
+			"Interface %u cannot %s allmulti : Netlink error %s",
+			iface_idx, enable ? "enable" : "disable",
+			strerror(rte_errno));
+	return ret;
+}
+
+/**
+ * Process network interface information from Netlink message.
+ *
+ * @param nh
+ *   Pointer to Netlink message header.
+ * @param arg
+ *   Opaque data pointer for this callback.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_nl_cmdget_cb(struct nlmsghdr *nh, void *arg)
+{
+	struct mlx5_nl_ifindex_data *data = arg;
+	struct mlx5_nl_ifindex_data local = {
+		.flags = 0,
+	};
+	size_t off = NLMSG_HDRLEN;
+
+	if (nh->nlmsg_type !=
+	    RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET) &&
+	    nh->nlmsg_type !=
+	    RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_PORT_GET))
+		goto error;
+	while (off < nh->nlmsg_len) {
+		struct nlattr *na = (void *)((uintptr_t)nh + off);
+		void *payload = (void *)((uintptr_t)na + NLA_HDRLEN);
+
+		if (na->nla_len > nh->nlmsg_len - off)
+			goto error;
+		switch (na->nla_type) {
+		case RDMA_NLDEV_ATTR_DEV_INDEX:
+			local.ibindex = *(uint32_t *)payload;
+			local.flags |= MLX5_NL_CMD_GET_IB_INDEX;
+			break;
+		case RDMA_NLDEV_ATTR_DEV_NAME:
+			if (!strcmp(payload, data->name))
+				local.flags |= MLX5_NL_CMD_GET_IB_NAME;
+			break;
+		case RDMA_NLDEV_ATTR_NDEV_INDEX:
+			local.ifindex = *(uint32_t *)payload;
+			local.flags |= MLX5_NL_CMD_GET_NET_INDEX;
+			break;
+		case RDMA_NLDEV_ATTR_PORT_INDEX:
+			local.portnum = *(uint32_t *)payload;
+			local.flags |= MLX5_NL_CMD_GET_PORT_INDEX;
+			break;
+		default:
+			break;
+		}
+		off += NLA_ALIGN(na->nla_len);
+	}
+	/*
+	 * It is possible to have multiple messages for all
+	 * Infiniband devices in the system with appropriate name.
+	 * So we should gather parameters locally and copy to
+	 * query context only in case of coinciding device name.
+	 */
+	if (local.flags & MLX5_NL_CMD_GET_IB_NAME) {
+		data->flags = local.flags;
+		data->ibindex = local.ibindex;
+		data->ifindex = local.ifindex;
+		data->portnum = local.portnum;
+	}
+	return 0;
+error:
+	rte_errno = EINVAL;
+	return -rte_errno;
+}
+
+/**
+ * Get index of network interface associated with some IB device.
+ *
+ * This is the only somewhat safe method to avoid resorting to heuristics
+ * when faced with port representors. Unfortunately it requires at least
+ * Linux 4.17.
+ *
+ * @param nl
+ *   Netlink socket of the RDMA kind (NETLINK_RDMA).
+ * @param[in] name
+ *   IB device name.
+ * @param[in] pindex
+ *   IB device port index, starting from 1
+ * @return
+ *   A valid (nonzero) interface index on success, 0 otherwise and rte_errno
+ *   is set.
+ */
+unsigned int
+mlx5_nl_ifindex(int nl, const char *name, uint32_t pindex)
+{
+	struct mlx5_nl_ifindex_data data = {
+		.name = name,
+		.flags = 0,
+		.ibindex = 0, /* Determined during first pass. */
+		.ifindex = 0, /* Determined during second pass. */
+	};
+	union {
+		struct nlmsghdr nh;
+		uint8_t buf[NLMSG_HDRLEN +
+			    NLA_HDRLEN + NLA_ALIGN(sizeof(data.ibindex)) +
+			    NLA_HDRLEN + NLA_ALIGN(sizeof(pindex))];
+	} req = {
+		.nh = {
+			.nlmsg_len = NLMSG_LENGTH(0),
+			.nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
+						       RDMA_NLDEV_CMD_GET),
+			.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP,
+		},
+	};
+	struct nlattr *na;
+	uint32_t sn = MLX5_NL_SN_GENERATE;
+	int ret;
+
+	ret = mlx5_nl_send(nl, &req.nh, sn);
+	if (ret < 0)
+		return 0;
+	ret = mlx5_nl_recv(nl, sn, mlx5_nl_cmdget_cb, &data);
+	if (ret < 0)
+		return 0;
+	if (!(data.flags & MLX5_NL_CMD_GET_IB_NAME) ||
+	    !(data.flags & MLX5_NL_CMD_GET_IB_INDEX))
+		goto error;
+	data.flags = 0;
+	sn = MLX5_NL_SN_GENERATE;
+	req.nh.nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
+					     RDMA_NLDEV_CMD_PORT_GET);
+	req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
+	req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.buf) - NLMSG_HDRLEN);
+	na = (void *)((uintptr_t)req.buf + NLMSG_HDRLEN);
+	na->nla_len = NLA_HDRLEN + sizeof(data.ibindex);
+	na->nla_type = RDMA_NLDEV_ATTR_DEV_INDEX;
+	memcpy((void *)((uintptr_t)na + NLA_HDRLEN),
+	       &data.ibindex, sizeof(data.ibindex));
+	na = (void *)((uintptr_t)na + NLA_ALIGN(na->nla_len));
+	na->nla_len = NLA_HDRLEN + sizeof(pindex);
+	na->nla_type = RDMA_NLDEV_ATTR_PORT_INDEX;
+	memcpy((void *)((uintptr_t)na + NLA_HDRLEN),
+	       &pindex, sizeof(pindex));
+	ret = mlx5_nl_send(nl, &req.nh, sn);
+	if (ret < 0)
+		return 0;
+	ret = mlx5_nl_recv(nl, sn, mlx5_nl_cmdget_cb, &data);
+	if (ret < 0)
+		return 0;
+	if (!(data.flags & MLX5_NL_CMD_GET_IB_NAME) ||
+	    !(data.flags & MLX5_NL_CMD_GET_IB_INDEX) ||
+	    !(data.flags & MLX5_NL_CMD_GET_NET_INDEX) ||
+	    !data.ifindex)
+		goto error;
+	return data.ifindex;
+error:
+	rte_errno = ENODEV;
+	return 0;
+}
+
+/**
+ * Get the number of physical ports of given IB device.
+ *
+ * @param nl
+ *   Netlink socket of the RDMA kind (NETLINK_RDMA).
+ * @param[in] name
+ *   IB device name.
+ *
+ * @return
+ *   A valid (nonzero) number of ports on success, 0 otherwise
+ *   and rte_errno is set.
+ */
+unsigned int
+mlx5_nl_portnum(int nl, const char *name)
+{
+	struct mlx5_nl_ifindex_data data = {
+		.flags = 0,
+		.name = name,
+		.ifindex = 0,
+		.portnum = 0,
+	};
+	struct nlmsghdr req = {
+		.nlmsg_len = NLMSG_LENGTH(0),
+		.nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
+					       RDMA_NLDEV_CMD_GET),
+		.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP,
+	};
+	uint32_t sn = MLX5_NL_SN_GENERATE;
+	int ret;
+
+	ret = mlx5_nl_send(nl, &req, sn);
+	if (ret < 0)
+		return 0;
+	ret = mlx5_nl_recv(nl, sn, mlx5_nl_cmdget_cb, &data);
+	if (ret < 0)
+		return 0;
+	if (!(data.flags & MLX5_NL_CMD_GET_IB_NAME) ||
+	    !(data.flags & MLX5_NL_CMD_GET_IB_INDEX) ||
+	    !(data.flags & MLX5_NL_CMD_GET_PORT_INDEX)) {
+		rte_errno = ENODEV;
+		return 0;
+	}
+	if (!data.portnum)
+		rte_errno = EINVAL;
+	return data.portnum;
+}
+
+/**
+ * Analyze gathered port parameters via Netlink to recognize master
+ * and representor devices for E-Switch configuration.
+ *
+ * @param[in] num_vf_set
+ *   flag of presence of number of VFs port attribute.
+ * @param[inout] switch_info
+ *   Port information, including port name as a number and port name
+ *   type if recognized
+ *
+ * @return
+ *   master and representor flags are set in switch_info according to
+ *   recognized parameters (if any).
+ */
+static void
+mlx5_nl_check_switch_info(bool num_vf_set,
+			  struct mlx5_switch_info *switch_info)
+{
+	switch (switch_info->name_type) {
+	case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
+		/*
+		 * Name is not recognized, assume the master,
+		 * check the number of VFs key presence.
+		 */
+		switch_info->master = num_vf_set;
+		break;
+	case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
+		/*
+		 * Name is not set, this assumes the legacy naming
+		 * schema for master, just check if there is a
+		 * number of VFs key.
+		 */
+		switch_info->master = num_vf_set;
+		break;
+	case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
+		/* New uplink naming schema recognized. */
+		switch_info->master = 1;
+		break;
+	case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
+		/* Legacy representors naming schema. */
+		switch_info->representor = !num_vf_set;
+		break;
+	case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
+		/* New representors naming schema. */
+		switch_info->representor = 1;
+		break;
+	}
+}
+
+/**
+ * Process switch information from Netlink message.
+ *
+ * @param nh
+ *   Pointer to Netlink message header.
+ * @param arg
+ *   Opaque data pointer for this callback.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_nl_switch_info_cb(struct nlmsghdr *nh, void *arg)
+{
+	struct mlx5_switch_info info = {
+		.master = 0,
+		.representor = 0,
+		.name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
+		.port_name = 0,
+		.switch_id = 0,
+	};
+	size_t off = NLMSG_LENGTH(sizeof(struct ifinfomsg));
+	bool switch_id_set = false;
+	bool num_vf_set = false;
+
+	if (nh->nlmsg_type != RTM_NEWLINK)
+		goto error;
+	while (off < nh->nlmsg_len) {
+		struct rtattr *ra = (void *)((uintptr_t)nh + off);
+		void *payload = RTA_DATA(ra);
+		unsigned int i;
+
+		if (ra->rta_len > nh->nlmsg_len - off)
+			goto error;
+		switch (ra->rta_type) {
+		case IFLA_NUM_VF:
+			num_vf_set = true;
+			break;
+		case IFLA_PHYS_PORT_NAME:
+			mlx5_translate_port_name((char *)payload, &info);
+			break;
+		case IFLA_PHYS_SWITCH_ID:
+			info.switch_id = 0;
+			for (i = 0; i < RTA_PAYLOAD(ra); ++i) {
+				info.switch_id <<= 8;
+				info.switch_id |= ((uint8_t *)payload)[i];
+			}
+			switch_id_set = true;
+			break;
+		}
+		off += RTA_ALIGN(ra->rta_len);
+	}
+	if (switch_id_set) {
+		/* We have some E-Switch configuration. */
+		mlx5_nl_check_switch_info(num_vf_set, &info);
+	}
+	assert(!(info.master && info.representor));
+	memcpy(arg, &info, sizeof(info));
+	return 0;
+error:
+	rte_errno = EINVAL;
+	return -rte_errno;
+}
+
+/**
+ * Get switch information associated with network interface.
+ *
+ * @param nl
+ *   Netlink socket of the ROUTE kind (NETLINK_ROUTE).
+ * @param ifindex
+ *   Network interface index.
+ * @param[out] info
+ *   Switch information object, populated in case of success.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_nl_switch_info(int nl, unsigned int ifindex,
+		    struct mlx5_switch_info *info)
+{
+	struct {
+		struct nlmsghdr nh;
+		struct ifinfomsg info;
+		struct rtattr rta;
+		uint32_t extmask;
+	} req = {
+		.nh = {
+			.nlmsg_len = NLMSG_LENGTH
+					(sizeof(req.info) +
+					 RTA_LENGTH(sizeof(uint32_t))),
+			.nlmsg_type = RTM_GETLINK,
+			.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
+		},
+		.info = {
+			.ifi_family = AF_UNSPEC,
+			.ifi_index = ifindex,
+		},
+		.rta = {
+			.rta_type = IFLA_EXT_MASK,
+			.rta_len = RTA_LENGTH(sizeof(int32_t)),
+		},
+		.extmask = RTE_LE32(1),
+	};
+	uint32_t sn = MLX5_NL_SN_GENERATE;
+	int ret;
+
+	ret = mlx5_nl_send(nl, &req.nh, sn);
+	if (ret >= 0)
+		ret = mlx5_nl_recv(nl, sn, mlx5_nl_switch_info_cb, info);
+	if (info->master && info->representor) {
+		DRV_LOG(ERR, "ifindex %u device is recognized as master"
+			     " and as representor", ifindex);
+		rte_errno = ENODEV;
+		ret = -rte_errno;
+	}
+	return ret;
+}
+
+/*
+ * Delete VLAN network device by ifindex.
+ *
+ * @param[in] tcf
+ *   Context object initialized by mlx5_nl_vlan_vmwa_init().
+ * @param[in] ifindex
+ *   Interface index of network device to delete.
+ */
+void
+mlx5_nl_vlan_vmwa_delete(struct mlx5_nl_vlan_vmwa_context *vmwa,
+		      uint32_t ifindex)
+{
+	uint32_t sn = MLX5_NL_SN_GENERATE;
+	int ret;
+	struct {
+		struct nlmsghdr nh;
+		struct ifinfomsg info;
+	} req = {
+		.nh = {
+			.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
+			.nlmsg_type = RTM_DELLINK,
+			.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
+		},
+		.info = {
+			.ifi_family = AF_UNSPEC,
+			.ifi_index = ifindex,
+		},
+	};
+
+	if (ifindex) {
+		ret = mlx5_nl_send(vmwa->nl_socket, &req.nh, sn);
+		if (ret >= 0)
+			ret = mlx5_nl_recv(vmwa->nl_socket, sn, NULL, NULL);
+		if (ret < 0)
+			DRV_LOG(WARNING, "netlink: error deleting VLAN WA"
+				" ifindex %u, %d", ifindex, ret);
+	}
+}
+
+/* Set of subroutines to build Netlink message. */
+static struct nlattr *
+nl_msg_tail(struct nlmsghdr *nlh)
+{
+	return (struct nlattr *)
+		(((uint8_t *)nlh) + NLMSG_ALIGN(nlh->nlmsg_len));
+}
+
+static void
+nl_attr_put(struct nlmsghdr *nlh, int type, const void *data, int alen)
+{
+	struct nlattr *nla = nl_msg_tail(nlh);
+
+	nla->nla_type = type;
+	nla->nla_len = NLMSG_ALIGN(sizeof(struct nlattr) + alen);
+	nlh->nlmsg_len = NLMSG_ALIGN(nlh->nlmsg_len) + nla->nla_len;
+
+	if (alen)
+		memcpy((uint8_t *)nla + sizeof(struct nlattr), data, alen);
+}
+
+static struct nlattr *
+nl_attr_nest_start(struct nlmsghdr *nlh, int type)
+{
+	struct nlattr *nest = (struct nlattr *)nl_msg_tail(nlh);
+
+	nl_attr_put(nlh, type, NULL, 0);
+	return nest;
+}
+
+static void
+nl_attr_nest_end(struct nlmsghdr *nlh, struct nlattr *nest)
+{
+	nest->nla_len = (uint8_t *)nl_msg_tail(nlh) - (uint8_t *)nest;
+}
+
+/*
+ * Create network VLAN device with specified VLAN tag.
+ *
+ * @param[in] tcf
+ *   Context object initialized by mlx5_nl_vlan_vmwa_init().
+ * @param[in] ifindex
+ *   Base network interface index.
+ * @param[in] tag
+ *   VLAN tag for VLAN network device to create.
+ */
+uint32_t
+mlx5_nl_vlan_vmwa_create(struct mlx5_nl_vlan_vmwa_context *vmwa,
+			 uint32_t ifindex, uint16_t tag)
+{
+	struct nlmsghdr *nlh;
+	struct ifinfomsg *ifm;
+	char name[sizeof(MLX5_VMWA_VLAN_DEVICE_PFX) + 32];
+
+	alignas(RTE_CACHE_LINE_SIZE)
+	uint8_t buf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
+		    NLMSG_ALIGN(sizeof(struct ifinfomsg)) +
+		    NLMSG_ALIGN(sizeof(struct nlattr)) * 8 +
+		    NLMSG_ALIGN(sizeof(uint32_t)) +
+		    NLMSG_ALIGN(sizeof(name)) +
+		    NLMSG_ALIGN(sizeof("vlan")) +
+		    NLMSG_ALIGN(sizeof(uint32_t)) +
+		    NLMSG_ALIGN(sizeof(uint16_t)) + 16];
+	struct nlattr *na_info;
+	struct nlattr *na_vlan;
+	uint32_t sn = MLX5_NL_SN_GENERATE;
+	int ret;
+
+	memset(buf, 0, sizeof(buf));
+	nlh = (struct nlmsghdr *)buf;
+	nlh->nlmsg_len = sizeof(struct nlmsghdr);
+	nlh->nlmsg_type = RTM_NEWLINK;
+	nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE |
+			   NLM_F_EXCL | NLM_F_ACK;
+	ifm = (struct ifinfomsg *)nl_msg_tail(nlh);
+	nlh->nlmsg_len += sizeof(struct ifinfomsg);
+	ifm->ifi_family = AF_UNSPEC;
+	ifm->ifi_type = 0;
+	ifm->ifi_index = 0;
+	ifm->ifi_flags = IFF_UP;
+	ifm->ifi_change = 0xffffffff;
+	nl_attr_put(nlh, IFLA_LINK, &ifindex, sizeof(ifindex));
+	ret = snprintf(name, sizeof(name), "%s.%u.%u",
+		       MLX5_VMWA_VLAN_DEVICE_PFX, ifindex, tag);
+	nl_attr_put(nlh, IFLA_IFNAME, name, ret + 1);
+	na_info = nl_attr_nest_start(nlh, IFLA_LINKINFO);
+	nl_attr_put(nlh, IFLA_INFO_KIND, "vlan", sizeof("vlan"));
+	na_vlan = nl_attr_nest_start(nlh, IFLA_INFO_DATA);
+	nl_attr_put(nlh, IFLA_VLAN_ID, &tag, sizeof(tag));
+	nl_attr_nest_end(nlh, na_vlan);
+	nl_attr_nest_end(nlh, na_info);
+	assert(sizeof(buf) >= nlh->nlmsg_len);
+	ret = mlx5_nl_send(vmwa->nl_socket, nlh, sn);
+	if (ret >= 0)
+		ret = mlx5_nl_recv(vmwa->nl_socket, sn, NULL, NULL);
+	if (ret < 0) {
+		DRV_LOG(WARNING, "netlink: VLAN %s create failure (%d)", name,
+			ret);
+	}
+	// Try to get ifindex of created or pre-existing device.
+	ret = if_nametoindex(name);
+	if (!ret) {
+		DRV_LOG(WARNING, "VLAN %s failed to get index (%d)", name,
+			errno);
+		return 0;
+	}
+	return ret;
+}
diff --git a/drivers/common/mlx5/mlx5_nl.h b/drivers/common/mlx5/mlx5_nl.h
new file mode 100644
index 0000000..8e66a98
--- /dev/null
+++ b/drivers/common/mlx5/mlx5_nl.h
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2019 Mellanox Technologies, Ltd
+ */
+
+#ifndef RTE_PMD_MLX5_NL_H_
+#define RTE_PMD_MLX5_NL_H_
+
+#include <linux/netlink.h>
+
+#include <rte_ether.h>
+
+#include "mlx5_common.h"
+
+
+/* VLAN netdev for VLAN workaround. */
+struct mlx5_nl_vlan_dev {
+	uint32_t refcnt;
+	uint32_t ifindex; /**< Own interface index. */
+};
+
+/*
+ * Array of VLAN devices created on the base of VF
+ * used for workaround in virtual environments.
+ */
+struct mlx5_nl_vlan_vmwa_context {
+	int nl_socket;
+	uint32_t vf_ifindex;
+	struct mlx5_nl_vlan_dev vlan_dev[4096];
+};
+
+
+int mlx5_nl_init(int protocol);
+int mlx5_nl_mac_addr_add(int nlsk_fd, unsigned int iface_idx, uint64_t *mac_own,
+			 struct rte_ether_addr *mac, uint32_t index);
+int mlx5_nl_mac_addr_remove(int nlsk_fd, unsigned int iface_idx,
+			    uint64_t *mac_own, struct rte_ether_addr *mac,
+			    uint32_t index);
+void mlx5_nl_mac_addr_sync(int nlsk_fd, unsigned int iface_idx,
+			   struct rte_ether_addr *mac_addrs, int n);
+void mlx5_nl_mac_addr_flush(int nlsk_fd, unsigned int iface_idx,
+			    struct rte_ether_addr *mac_addrs, int n,
+			    uint64_t *mac_own);
+int mlx5_nl_promisc(int nlsk_fd, unsigned int iface_idx, int enable);
+int mlx5_nl_allmulti(int nlsk_fd, unsigned int iface_idx, int enable);
+unsigned int mlx5_nl_portnum(int nl, const char *name);
+unsigned int mlx5_nl_ifindex(int nl, const char *name, uint32_t pindex);
+int mlx5_nl_vf_mac_addr_modify(int nlsk_fd, unsigned int iface_idx,
+			       struct rte_ether_addr *mac, int vf_index);
+int mlx5_nl_switch_info(int nl, unsigned int ifindex,
+			struct mlx5_switch_info *info);
+
+void mlx5_nl_vlan_vmwa_delete(struct mlx5_nl_vlan_vmwa_context *vmwa,
+			      uint32_t ifindex);
+uint32_t mlx5_nl_vlan_vmwa_create(struct mlx5_nl_vlan_vmwa_context *vmwa,
+				  uint32_t ifindex, uint16_t tag);
+
+#endif /* RTE_PMD_MLX5_NL_H_ */
diff --git a/drivers/common/mlx5/rte_common_mlx5_version.map b/drivers/common/mlx5/rte_common_mlx5_version.map
index 16b9b34..318a024 100644
--- a/drivers/common/mlx5/rte_common_mlx5_version.map
+++ b/drivers/common/mlx5/rte_common_mlx5_version.map
@@ -24,5 +24,21 @@ DPDK_20.02 {
 	mlx5_devx_get_out_command_status;
 
 	mlx5_dev_to_pci_addr;
-	mlx5_vdpa_mode_selected;
+
+	mlx5_nl_allmulti;
+	mlx5_nl_ifindex;
+	mlx5_nl_init;
+	mlx5_nl_mac_addr_add;
+	mlx5_nl_mac_addr_flush;
+	mlx5_nl_mac_addr_remove;
+	mlx5_nl_mac_addr_sync;
+	mlx5_nl_portnum;
+	mlx5_nl_promisc;
+	mlx5_nl_switch_info;
+	mlx5_nl_vf_mac_addr_modify;
+	mlx5_nl_vlan_vmwa_create;
+	mlx5_nl_vlan_vmwa_delete;
+
+	mlx5_translate_port_name;
+        mlx5_vdpa_mode_selected;
 };
diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile
index dc6b3c8..d26afbb 100644
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile
@@ -30,7 +30,6 @@ SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_flow_meter.c
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_flow_dv.c
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_flow_verbs.c
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_mp.c
-SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_nl.c
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_utils.c
 SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_socket.c
 
diff --git a/drivers/net/mlx5/meson.build b/drivers/net/mlx5/meson.build
index e10ef3a..d45be00 100644
--- a/drivers/net/mlx5/meson.build
+++ b/drivers/net/mlx5/meson.build
@@ -19,7 +19,6 @@ sources = files(
 	'mlx5_flow_verbs.c',
 	'mlx5_mac.c',
 	'mlx5_mr.c',
-	'mlx5_nl.c',
 	'mlx5_rss.c',
 	'mlx5_rxmode.c',
 	'mlx5_rxq.c',
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 5d25d8b..48f31c2 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -35,11 +35,11 @@
 #include <mlx5_glue.h>
 #include <mlx5_devx_cmds.h>
 #include <mlx5_prm.h>
+#include <mlx5_nl.h>
 
 #include "mlx5_defs.h"
 #include "mlx5_utils.h"
 #include "mlx5_mr.h"
-#include "mlx5_nl.h"
 #include "mlx5_autoconf.h"
 
 /* Request types for IPC. */
diff --git a/drivers/net/mlx5/mlx5_defs.h b/drivers/net/mlx5/mlx5_defs.h
index dc9b965..9b392ed 100644
--- a/drivers/net/mlx5/mlx5_defs.h
+++ b/drivers/net/mlx5/mlx5_defs.h
@@ -14,14 +14,6 @@
 /* Reported driver name. */
 #define MLX5_DRIVER_NAME "net_mlx5"
 
-/* Maximum number of simultaneous unicast MAC addresses. */
-#define MLX5_MAX_UC_MAC_ADDRESSES 128
-/* Maximum number of simultaneous Multicast MAC addresses. */
-#define MLX5_MAX_MC_MAC_ADDRESSES 128
-/* Maximum number of simultaneous MAC addresses. */
-#define MLX5_MAX_MAC_ADDRESSES \
-	(MLX5_MAX_UC_MAC_ADDRESSES + MLX5_MAX_MC_MAC_ADDRESSES)
-
 /* Maximum number of simultaneous VLAN filters. */
 #define MLX5_MAX_VLAN_IDS 128
 
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 5484104..b765636 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -1940,61 +1940,6 @@ struct mlx5_priv *
 }
 
 /**
- * Extract port name, as a number, from sysfs or netlink information.
- *
- * @param[in] port_name_in
- *   String representing the port name.
- * @param[out] port_info_out
- *   Port information, including port name as a number and port name
- *   type if recognized
- *
- * @return
- *   port_name field set according to recognized name format.
- */
-void
-mlx5_translate_port_name(const char *port_name_in,
-			 struct mlx5_switch_info *port_info_out)
-{
-	char pf_c1, pf_c2, vf_c1, vf_c2;
-	char *end;
-	int sc_items;
-
-	/*
-	 * Check for port-name as a string of the form pf0vf0
-	 * (support kernel ver >= 5.0 or OFED ver >= 4.6).
-	 */
-	sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
-			  &pf_c1, &pf_c2, &port_info_out->pf_num,
-			  &vf_c1, &vf_c2, &port_info_out->port_name);
-	if (sc_items == 6 &&
-	    pf_c1 == 'p' && pf_c2 == 'f' &&
-	    vf_c1 == 'v' && vf_c2 == 'f') {
-		port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF;
-		return;
-	}
-	/*
-	 * Check for port-name as a string of the form p0
-	 * (support kernel ver >= 5.0, or OFED ver >= 4.6).
-	 */
-	sc_items = sscanf(port_name_in, "%c%d",
-			  &pf_c1, &port_info_out->port_name);
-	if (sc_items == 2 && pf_c1 == 'p') {
-		port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
-		return;
-	}
-	/* Check for port-name as a number (support kernel ver < 5.0 */
-	errno = 0;
-	port_info_out->port_name = strtol(port_name_in, &end, 0);
-	if (!errno &&
-	    (size_t)(end - port_name_in) == strlen(port_name_in)) {
-		port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY;
-		return;
-	}
-	port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
-	return;
-}
-
-/**
  * DPDK callback to retrieve plug-in module EEPROM information (type and size).
  *
  * @param dev
diff --git a/drivers/net/mlx5/mlx5_nl.c b/drivers/net/mlx5/mlx5_nl.c
deleted file mode 100644
index 6b8ca00..0000000
--- a/drivers/net/mlx5/mlx5_nl.c
+++ /dev/null
@@ -1,1338 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2018 6WIND S.A.
- * Copyright 2018 Mellanox Technologies, Ltd
- */
-
-#include <errno.h>
-#include <linux/if_link.h>
-#include <linux/rtnetlink.h>
-#include <net/if.h>
-#include <rdma/rdma_netlink.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <stdalign.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <unistd.h>
-
-#include <rte_errno.h>
-#include <rte_atomic.h>
-#include <rte_ether.h>
-
-#include "mlx5.h"
-#include "mlx5_nl.h"
-#include "mlx5_utils.h"
-
-/* Size of the buffer to receive kernel messages */
-#define MLX5_NL_BUF_SIZE (32 * 1024)
-/* Send buffer size for the Netlink socket */
-#define MLX5_SEND_BUF_SIZE 32768
-/* Receive buffer size for the Netlink socket */
-#define MLX5_RECV_BUF_SIZE 32768
-
-/** Parameters of VLAN devices created by driver. */
-#define MLX5_VMWA_VLAN_DEVICE_PFX "evmlx"
-/*
- * Define NDA_RTA as defined in iproute2 sources.
- *
- * see in iproute2 sources file include/libnetlink.h
- */
-#ifndef MLX5_NDA_RTA
-#define MLX5_NDA_RTA(r) \
-	((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
-#endif
-/*
- * Define NLMSG_TAIL as defined in iproute2 sources.
- *
- * see in iproute2 sources file include/libnetlink.h
- */
-#ifndef NLMSG_TAIL
-#define NLMSG_TAIL(nmsg) \
-	((struct rtattr *)(((char *)(nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
-#endif
-/*
- * The following definitions are normally found in rdma/rdma_netlink.h,
- * however they are so recent that most systems do not expose them yet.
- */
-#ifndef HAVE_RDMA_NL_NLDEV
-#define RDMA_NL_NLDEV 5
-#endif
-#ifndef HAVE_RDMA_NLDEV_CMD_GET
-#define RDMA_NLDEV_CMD_GET 1
-#endif
-#ifndef HAVE_RDMA_NLDEV_CMD_PORT_GET
-#define RDMA_NLDEV_CMD_PORT_GET 5
-#endif
-#ifndef HAVE_RDMA_NLDEV_ATTR_DEV_INDEX
-#define RDMA_NLDEV_ATTR_DEV_INDEX 1
-#endif
-#ifndef HAVE_RDMA_NLDEV_ATTR_DEV_NAME
-#define RDMA_NLDEV_ATTR_DEV_NAME 2
-#endif
-#ifndef HAVE_RDMA_NLDEV_ATTR_PORT_INDEX
-#define RDMA_NLDEV_ATTR_PORT_INDEX 3
-#endif
-#ifndef HAVE_RDMA_NLDEV_ATTR_NDEV_INDEX
-#define RDMA_NLDEV_ATTR_NDEV_INDEX 50
-#endif
-
-/* These are normally found in linux/if_link.h. */
-#ifndef HAVE_IFLA_NUM_VF
-#define IFLA_NUM_VF 21
-#endif
-#ifndef HAVE_IFLA_EXT_MASK
-#define IFLA_EXT_MASK 29
-#endif
-#ifndef HAVE_IFLA_PHYS_SWITCH_ID
-#define IFLA_PHYS_SWITCH_ID 36
-#endif
-#ifndef HAVE_IFLA_PHYS_PORT_NAME
-#define IFLA_PHYS_PORT_NAME 38
-#endif
-
-/* Add/remove MAC address through Netlink */
-struct mlx5_nl_mac_addr {
-	struct rte_ether_addr (*mac)[];
-	/**< MAC address handled by the device. */
-	int mac_n; /**< Number of addresses in the array. */
-};
-
-#define MLX5_NL_CMD_GET_IB_NAME (1 << 0)
-#define MLX5_NL_CMD_GET_IB_INDEX (1 << 1)
-#define MLX5_NL_CMD_GET_NET_INDEX (1 << 2)
-#define MLX5_NL_CMD_GET_PORT_INDEX (1 << 3)
-
-/** Data structure used by mlx5_nl_cmdget_cb(). */
-struct mlx5_nl_ifindex_data {
-	const char *name; /**< IB device name (in). */
-	uint32_t flags; /**< found attribute flags (out). */
-	uint32_t ibindex; /**< IB device index (out). */
-	uint32_t ifindex; /**< Network interface index (out). */
-	uint32_t portnum; /**< IB device max port number (out). */
-};
-
-rte_atomic32_t atomic_sn = RTE_ATOMIC32_INIT(0);
-
-/* Generate Netlink sequence number. */
-#define MLX5_NL_SN_GENERATE ((uint32_t)rte_atomic32_add_return(&atomic_sn, 1))
-
-/**
- * Opens a Netlink socket.
- *
- * @param protocol
- *   Netlink protocol (e.g. NETLINK_ROUTE, NETLINK_RDMA).
- *
- * @return
- *   A file descriptor on success, a negative errno value otherwise and
- *   rte_errno is set.
- */
-int
-mlx5_nl_init(int protocol)
-{
-	int fd;
-	int sndbuf_size = MLX5_SEND_BUF_SIZE;
-	int rcvbuf_size = MLX5_RECV_BUF_SIZE;
-	struct sockaddr_nl local = {
-		.nl_family = AF_NETLINK,
-	};
-	int ret;
-
-	fd = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, protocol);
-	if (fd == -1) {
-		rte_errno = errno;
-		return -rte_errno;
-	}
-	ret = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &sndbuf_size, sizeof(int));
-	if (ret == -1) {
-		rte_errno = errno;
-		goto error;
-	}
-	ret = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf_size, sizeof(int));
-	if (ret == -1) {
-		rte_errno = errno;
-		goto error;
-	}
-	ret = bind(fd, (struct sockaddr *)&local, sizeof(local));
-	if (ret == -1) {
-		rte_errno = errno;
-		goto error;
-	}
-	return fd;
-error:
-	close(fd);
-	return -rte_errno;
-}
-
-/**
- * Send a request message to the kernel on the Netlink socket.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] nh
- *   The Netlink message send to the kernel.
- * @param[in] ssn
- *   Sequence number.
- * @param[in] req
- *   Pointer to the request structure.
- * @param[in] len
- *   Length of the request in bytes.
- *
- * @return
- *   The number of sent bytes on success, a negative errno value otherwise and
- *   rte_errno is set.
- */
-static int
-mlx5_nl_request(int nlsk_fd, struct nlmsghdr *nh, uint32_t sn, void *req,
-		int len)
-{
-	struct sockaddr_nl sa = {
-		.nl_family = AF_NETLINK,
-	};
-	struct iovec iov[2] = {
-		{ .iov_base = nh, .iov_len = sizeof(*nh), },
-		{ .iov_base = req, .iov_len = len, },
-	};
-	struct msghdr msg = {
-		.msg_name = &sa,
-		.msg_namelen = sizeof(sa),
-		.msg_iov = iov,
-		.msg_iovlen = 2,
-	};
-	int send_bytes;
-
-	nh->nlmsg_pid = 0; /* communication with the kernel uses pid 0 */
-	nh->nlmsg_seq = sn;
-	send_bytes = sendmsg(nlsk_fd, &msg, 0);
-	if (send_bytes < 0) {
-		rte_errno = errno;
-		return -rte_errno;
-	}
-	return send_bytes;
-}
-
-/**
- * Send a message to the kernel on the Netlink socket.
- *
- * @param[in] nlsk_fd
- *   The Netlink socket file descriptor used for communication.
- * @param[in] nh
- *   The Netlink message send to the kernel.
- * @param[in] sn
- *   Sequence number.
- *
- * @return
- *   The number of sent bytes on success, a negative errno value otherwise and
- *   rte_errno is set.
- */
-static int
-mlx5_nl_send(int nlsk_fd, struct nlmsghdr *nh, uint32_t sn)
-{
-	struct sockaddr_nl sa = {
-		.nl_family = AF_NETLINK,
-	};
-	struct iovec iov = {
-		.iov_base = nh,
-		.iov_len = nh->nlmsg_len,
-	};
-	struct msghdr msg = {
-		.msg_name = &sa,
-		.msg_namelen = sizeof(sa),
-		.msg_iov = &iov,
-		.msg_iovlen = 1,
-	};
-	int send_bytes;
-
-	nh->nlmsg_pid = 0; /* communication with the kernel uses pid 0 */
-	nh->nlmsg_seq = sn;
-	send_bytes = sendmsg(nlsk_fd, &msg, 0);
-	if (send_bytes < 0) {
-		rte_errno = errno;
-		return -rte_errno;
-	}
-	return send_bytes;
-}
-
-/**
- * Receive a message from the kernel on the Netlink socket, following
- * mlx5_nl_send().
- *
- * @param[in] nlsk_fd
- *   The Netlink socket file descriptor used for communication.
- * @param[in] sn
- *   Sequence number.
- * @param[in] cb
- *   The callback function to call for each Netlink message received.
- * @param[in, out] arg
- *   Custom arguments for the callback.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-static int
-mlx5_nl_recv(int nlsk_fd, uint32_t sn, int (*cb)(struct nlmsghdr *, void *arg),
-	     void *arg)
-{
-	struct sockaddr_nl sa;
-	char buf[MLX5_RECV_BUF_SIZE];
-	struct iovec iov = {
-		.iov_base = buf,
-		.iov_len = sizeof(buf),
-	};
-	struct msghdr msg = {
-		.msg_name = &sa,
-		.msg_namelen = sizeof(sa),
-		.msg_iov = &iov,
-		/* One message at a time */
-		.msg_iovlen = 1,
-	};
-	int multipart = 0;
-	int ret = 0;
-
-	do {
-		struct nlmsghdr *nh;
-		int recv_bytes = 0;
-
-		do {
-			recv_bytes = recvmsg(nlsk_fd, &msg, 0);
-			if (recv_bytes == -1) {
-				rte_errno = errno;
-				return -rte_errno;
-			}
-			nh = (struct nlmsghdr *)buf;
-		} while (nh->nlmsg_seq != sn);
-		for (;
-		     NLMSG_OK(nh, (unsigned int)recv_bytes);
-		     nh = NLMSG_NEXT(nh, recv_bytes)) {
-			if (nh->nlmsg_type == NLMSG_ERROR) {
-				struct nlmsgerr *err_data = NLMSG_DATA(nh);
-
-				if (err_data->error < 0) {
-					rte_errno = -err_data->error;
-					return -rte_errno;
-				}
-				/* Ack message. */
-				return 0;
-			}
-			/* Multi-part msgs and their trailing DONE message. */
-			if (nh->nlmsg_flags & NLM_F_MULTI) {
-				if (nh->nlmsg_type == NLMSG_DONE)
-					return 0;
-				multipart = 1;
-			}
-			if (cb) {
-				ret = cb(nh, arg);
-				if (ret < 0)
-					return ret;
-			}
-		}
-	} while (multipart);
-	return ret;
-}
-
-/**
- * Parse Netlink message to retrieve the bridge MAC address.
- *
- * @param nh
- *   Pointer to Netlink Message Header.
- * @param arg
- *   PMD data register with this callback.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-static int
-mlx5_nl_mac_addr_cb(struct nlmsghdr *nh, void *arg)
-{
-	struct mlx5_nl_mac_addr *data = arg;
-	struct ndmsg *r = NLMSG_DATA(nh);
-	struct rtattr *attribute;
-	int len;
-
-	len = nh->nlmsg_len - NLMSG_LENGTH(sizeof(*r));
-	for (attribute = MLX5_NDA_RTA(r);
-	     RTA_OK(attribute, len);
-	     attribute = RTA_NEXT(attribute, len)) {
-		if (attribute->rta_type == NDA_LLADDR) {
-			if (data->mac_n == MLX5_MAX_MAC_ADDRESSES) {
-				DRV_LOG(WARNING,
-					"not enough room to finalize the"
-					" request");
-				rte_errno = ENOMEM;
-				return -rte_errno;
-			}
-#ifndef NDEBUG
-			char m[18];
-
-			rte_ether_format_addr(m, 18, RTA_DATA(attribute));
-			DRV_LOG(DEBUG, "bridge MAC address %s", m);
-#endif
-			memcpy(&(*data->mac)[data->mac_n++],
-			       RTA_DATA(attribute), RTE_ETHER_ADDR_LEN);
-		}
-	}
-	return 0;
-}
-
-/**
- * Get bridge MAC addresses.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] iface_idx
- *   Net device interface index.
- * @param mac[out]
- *   Pointer to the array table of MAC addresses to fill.
- *   Its size should be of MLX5_MAX_MAC_ADDRESSES.
- * @param mac_n[out]
- *   Number of entries filled in MAC array.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-static int
-mlx5_nl_mac_addr_list(int nlsk_fd, unsigned int iface_idx,
-		      struct rte_ether_addr (*mac)[], int *mac_n)
-{
-	struct {
-		struct nlmsghdr	hdr;
-		struct ifinfomsg ifm;
-	} req = {
-		.hdr = {
-			.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
-			.nlmsg_type = RTM_GETNEIGH,
-			.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
-		},
-		.ifm = {
-			.ifi_family = PF_BRIDGE,
-			.ifi_index = iface_idx,
-		},
-	};
-	struct mlx5_nl_mac_addr data = {
-		.mac = mac,
-		.mac_n = 0,
-	};
-	uint32_t sn = MLX5_NL_SN_GENERATE;
-	int ret;
-
-	if (nlsk_fd == -1)
-		return 0;
-	ret = mlx5_nl_request(nlsk_fd, &req.hdr, sn, &req.ifm,
-			      sizeof(struct ifinfomsg));
-	if (ret < 0)
-		goto error;
-	ret = mlx5_nl_recv(nlsk_fd, sn, mlx5_nl_mac_addr_cb, &data);
-	if (ret < 0)
-		goto error;
-	*mac_n = data.mac_n;
-	return 0;
-error:
-	DRV_LOG(DEBUG, "Interface %u cannot retrieve MAC address list %s",
-		iface_idx, strerror(rte_errno));
-	return -rte_errno;
-}
-
-/**
- * Modify the MAC address neighbour table with Netlink.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] iface_idx
- *   Net device interface index.
- * @param mac
- *   MAC address to consider.
- * @param add
- *   1 to add the MAC address, 0 to remove the MAC address.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-static int
-mlx5_nl_mac_addr_modify(int nlsk_fd, unsigned int iface_idx,
-			struct rte_ether_addr *mac, int add)
-{
-	struct {
-		struct nlmsghdr hdr;
-		struct ndmsg ndm;
-		struct rtattr rta;
-		uint8_t buffer[RTE_ETHER_ADDR_LEN];
-	} req = {
-		.hdr = {
-			.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)),
-			.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE |
-				NLM_F_EXCL | NLM_F_ACK,
-			.nlmsg_type = add ? RTM_NEWNEIGH : RTM_DELNEIGH,
-		},
-		.ndm = {
-			.ndm_family = PF_BRIDGE,
-			.ndm_state = NUD_NOARP | NUD_PERMANENT,
-			.ndm_ifindex = iface_idx,
-			.ndm_flags = NTF_SELF,
-		},
-		.rta = {
-			.rta_type = NDA_LLADDR,
-			.rta_len = RTA_LENGTH(RTE_ETHER_ADDR_LEN),
-		},
-	};
-	uint32_t sn = MLX5_NL_SN_GENERATE;
-	int ret;
-
-	if (nlsk_fd == -1)
-		return 0;
-	memcpy(RTA_DATA(&req.rta), mac, RTE_ETHER_ADDR_LEN);
-	req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
-		RTA_ALIGN(req.rta.rta_len);
-	ret = mlx5_nl_send(nlsk_fd, &req.hdr, sn);
-	if (ret < 0)
-		goto error;
-	ret = mlx5_nl_recv(nlsk_fd, sn, NULL, NULL);
-	if (ret < 0)
-		goto error;
-	return 0;
-error:
-	DRV_LOG(DEBUG,
-		"Interface %u cannot %s MAC address"
-		" %02X:%02X:%02X:%02X:%02X:%02X %s",
-		iface_idx,
-		add ? "add" : "remove",
-		mac->addr_bytes[0], mac->addr_bytes[1],
-		mac->addr_bytes[2], mac->addr_bytes[3],
-		mac->addr_bytes[4], mac->addr_bytes[5],
-		strerror(rte_errno));
-	return -rte_errno;
-}
-
-/**
- * Modify the VF MAC address neighbour table with Netlink.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] iface_idx
- *   Net device interface index.
- * @param mac
- *    MAC address to consider.
- * @param vf_index
- *    VF index.
- *
- * @return
- *    0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_nl_vf_mac_addr_modify(int nlsk_fd, unsigned int iface_idx,
-			   struct rte_ether_addr *mac, int vf_index)
-{
-	int ret;
-	struct {
-		struct nlmsghdr hdr;
-		struct ifinfomsg ifm;
-		struct rtattr vf_list_rta;
-		struct rtattr vf_info_rta;
-		struct rtattr vf_mac_rta;
-		struct ifla_vf_mac ivm;
-	} req = {
-		.hdr = {
-			.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
-			.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
-			.nlmsg_type = RTM_BASE,
-		},
-		.ifm = {
-			.ifi_index = iface_idx,
-		},
-		.vf_list_rta = {
-			.rta_type = IFLA_VFINFO_LIST,
-			.rta_len = RTA_ALIGN(RTA_LENGTH(0)),
-		},
-		.vf_info_rta = {
-			.rta_type = IFLA_VF_INFO,
-			.rta_len = RTA_ALIGN(RTA_LENGTH(0)),
-		},
-		.vf_mac_rta = {
-			.rta_type = IFLA_VF_MAC,
-		},
-	};
-	struct ifla_vf_mac ivm = {
-		.vf = vf_index,
-	};
-	uint32_t sn = MLX5_NL_SN_GENERATE;
-
-	memcpy(&ivm.mac, mac, RTE_ETHER_ADDR_LEN);
-	memcpy(RTA_DATA(&req.vf_mac_rta), &ivm, sizeof(ivm));
-
-	req.vf_mac_rta.rta_len = RTA_LENGTH(sizeof(ivm));
-	req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
-		RTA_ALIGN(req.vf_list_rta.rta_len) +
-		RTA_ALIGN(req.vf_info_rta.rta_len) +
-		RTA_ALIGN(req.vf_mac_rta.rta_len);
-	req.vf_list_rta.rta_len = RTE_PTR_DIFF(NLMSG_TAIL(&req.hdr),
-					       &req.vf_list_rta);
-	req.vf_info_rta.rta_len = RTE_PTR_DIFF(NLMSG_TAIL(&req.hdr),
-					       &req.vf_info_rta);
-
-	if (nlsk_fd < 0)
-		return -1;
-	ret = mlx5_nl_send(nlsk_fd, &req.hdr, sn);
-	if (ret < 0)
-		goto error;
-	ret = mlx5_nl_recv(nlsk_fd, sn, NULL, NULL);
-	if (ret < 0)
-		goto error;
-	return 0;
-error:
-	DRV_LOG(ERR,
-		"representor %u cannot set VF MAC address "
-		"%02X:%02X:%02X:%02X:%02X:%02X : %s",
-		vf_index,
-		mac->addr_bytes[0], mac->addr_bytes[1],
-		mac->addr_bytes[2], mac->addr_bytes[3],
-		mac->addr_bytes[4], mac->addr_bytes[5],
-		strerror(rte_errno));
-	return -rte_errno;
-}
-
-/**
- * Add a MAC address.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] iface_idx
- *   Net device interface index.
- * @param mac_own
- *   BITFIELD_DECLARE array to store the mac.
- * @param mac
- *   MAC address to register.
- * @param index
- *   MAC address index.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_nl_mac_addr_add(int nlsk_fd, unsigned int iface_idx,
-		     uint64_t *mac_own, struct rte_ether_addr *mac,
-		     uint32_t index)
-{
-	int ret;
-
-	ret = mlx5_nl_mac_addr_modify(nlsk_fd, iface_idx, mac, 1);
-	if (!ret)
-		BITFIELD_SET(mac_own, index);
-	if (ret == -EEXIST)
-		return 0;
-	return ret;
-}
-
-/**
- * Remove a MAC address.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] iface_idx
- *   Net device interface index.
- * @param mac_own
- *   BITFIELD_DECLARE array to store the mac.
- * @param mac
- *   MAC address to remove.
- * @param index
- *   MAC address index.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_nl_mac_addr_remove(int nlsk_fd, unsigned int iface_idx, uint64_t *mac_own,
-			struct rte_ether_addr *mac, uint32_t index)
-{
-	BITFIELD_RESET(mac_own, index);
-	return mlx5_nl_mac_addr_modify(nlsk_fd, iface_idx, mac, 0);
-}
-
-/**
- * Synchronize Netlink bridge table to the internal table.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] iface_idx
- *   Net device interface index.
- * @param mac_addrs
- *   Mac addresses array to sync.
- * @param n
- *   @p mac_addrs array size.
- */
-void
-mlx5_nl_mac_addr_sync(int nlsk_fd, unsigned int iface_idx,
-		      struct rte_ether_addr *mac_addrs, int n)
-{
-	struct rte_ether_addr macs[n];
-	int macs_n = 0;
-	int i;
-	int ret;
-
-	ret = mlx5_nl_mac_addr_list(nlsk_fd, iface_idx, &macs, &macs_n);
-	if (ret)
-		return;
-	for (i = 0; i != macs_n; ++i) {
-		int j;
-
-		/* Verify the address is not in the array yet. */
-		for (j = 0; j != n; ++j)
-			if (rte_is_same_ether_addr(&macs[i], &mac_addrs[j]))
-				break;
-		if (j != n)
-			continue;
-		/* Find the first entry available. */
-		for (j = 0; j != n; ++j) {
-			if (rte_is_zero_ether_addr(&mac_addrs[j])) {
-				mac_addrs[j] = macs[i];
-				break;
-			}
-		}
-	}
-}
-
-/**
- * Flush all added MAC addresses.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] iface_idx
- *   Net device interface index.
- * @param[in] mac_addrs
- *   Mac addresses array to flush.
- * @param n
- *   @p mac_addrs array size.
- * @param mac_own
- *   BITFIELD_DECLARE array to store the mac.
- */
-void
-mlx5_nl_mac_addr_flush(int nlsk_fd, unsigned int iface_idx,
-		       struct rte_ether_addr *mac_addrs, int n,
-		       uint64_t *mac_own)
-{
-	int i;
-
-	for (i = n - 1; i >= 0; --i) {
-		struct rte_ether_addr *m = &mac_addrs[i];
-
-		if (BITFIELD_ISSET(mac_own, i))
-			mlx5_nl_mac_addr_remove(nlsk_fd, iface_idx, mac_own, m,
-						i);
-	}
-}
-
-/**
- * Enable promiscuous / all multicast mode through Netlink.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] iface_idx
- *   Net device interface index.
- * @param flags
- *   IFF_PROMISC for promiscuous, IFF_ALLMULTI for allmulti.
- * @param enable
- *   Nonzero to enable, disable otherwise.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-static int
-mlx5_nl_device_flags(int nlsk_fd, unsigned int iface_idx, uint32_t flags,
-		     int enable)
-{
-	struct {
-		struct nlmsghdr hdr;
-		struct ifinfomsg ifi;
-	} req = {
-		.hdr = {
-			.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
-			.nlmsg_type = RTM_NEWLINK,
-			.nlmsg_flags = NLM_F_REQUEST,
-		},
-		.ifi = {
-			.ifi_flags = enable ? flags : 0,
-			.ifi_change = flags,
-			.ifi_index = iface_idx,
-		},
-	};
-	uint32_t sn = MLX5_NL_SN_GENERATE;
-	int ret;
-
-	assert(!(flags & ~(IFF_PROMISC | IFF_ALLMULTI)));
-	if (nlsk_fd < 0)
-		return 0;
-	ret = mlx5_nl_send(nlsk_fd, &req.hdr, sn);
-	if (ret < 0)
-		return ret;
-	return 0;
-}
-
-/**
- * Enable promiscuous mode through Netlink.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] iface_idx
- *   Net device interface index.
- * @param enable
- *   Nonzero to enable, disable otherwise.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_nl_promisc(int nlsk_fd, unsigned int iface_idx, int enable)
-{
-	int ret = mlx5_nl_device_flags(nlsk_fd, iface_idx, IFF_PROMISC, enable);
-
-	if (ret)
-		DRV_LOG(DEBUG,
-			"Interface %u cannot %s promisc mode: Netlink error %s",
-			iface_idx, enable ? "enable" : "disable",
-			strerror(rte_errno));
-	return ret;
-}
-
-/**
- * Enable all multicast mode through Netlink.
- *
- * @param[in] nlsk_fd
- *   Netlink socket file descriptor.
- * @param[in] iface_idx
- *   Net device interface index.
- * @param enable
- *   Nonzero to enable, disable otherwise.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_nl_allmulti(int nlsk_fd, unsigned int iface_idx, int enable)
-{
-	int ret = mlx5_nl_device_flags(nlsk_fd, iface_idx, IFF_ALLMULTI,
-				       enable);
-
-	if (ret)
-		DRV_LOG(DEBUG,
-			"Interface %u cannot %s allmulti : Netlink error %s",
-			iface_idx, enable ? "enable" : "disable",
-			strerror(rte_errno));
-	return ret;
-}
-
-/**
- * Process network interface information from Netlink message.
- *
- * @param nh
- *   Pointer to Netlink message header.
- * @param arg
- *   Opaque data pointer for this callback.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-static int
-mlx5_nl_cmdget_cb(struct nlmsghdr *nh, void *arg)
-{
-	struct mlx5_nl_ifindex_data *data = arg;
-	struct mlx5_nl_ifindex_data local = {
-		.flags = 0,
-	};
-	size_t off = NLMSG_HDRLEN;
-
-	if (nh->nlmsg_type !=
-	    RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET) &&
-	    nh->nlmsg_type !=
-	    RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_PORT_GET))
-		goto error;
-	while (off < nh->nlmsg_len) {
-		struct nlattr *na = (void *)((uintptr_t)nh + off);
-		void *payload = (void *)((uintptr_t)na + NLA_HDRLEN);
-
-		if (na->nla_len > nh->nlmsg_len - off)
-			goto error;
-		switch (na->nla_type) {
-		case RDMA_NLDEV_ATTR_DEV_INDEX:
-			local.ibindex = *(uint32_t *)payload;
-			local.flags |= MLX5_NL_CMD_GET_IB_INDEX;
-			break;
-		case RDMA_NLDEV_ATTR_DEV_NAME:
-			if (!strcmp(payload, data->name))
-				local.flags |= MLX5_NL_CMD_GET_IB_NAME;
-			break;
-		case RDMA_NLDEV_ATTR_NDEV_INDEX:
-			local.ifindex = *(uint32_t *)payload;
-			local.flags |= MLX5_NL_CMD_GET_NET_INDEX;
-			break;
-		case RDMA_NLDEV_ATTR_PORT_INDEX:
-			local.portnum = *(uint32_t *)payload;
-			local.flags |= MLX5_NL_CMD_GET_PORT_INDEX;
-			break;
-		default:
-			break;
-		}
-		off += NLA_ALIGN(na->nla_len);
-	}
-	/*
-	 * It is possible to have multiple messages for all
-	 * Infiniband devices in the system with appropriate name.
-	 * So we should gather parameters locally and copy to
-	 * query context only in case of coinciding device name.
-	 */
-	if (local.flags & MLX5_NL_CMD_GET_IB_NAME) {
-		data->flags = local.flags;
-		data->ibindex = local.ibindex;
-		data->ifindex = local.ifindex;
-		data->portnum = local.portnum;
-	}
-	return 0;
-error:
-	rte_errno = EINVAL;
-	return -rte_errno;
-}
-
-/**
- * Get index of network interface associated with some IB device.
- *
- * This is the only somewhat safe method to avoid resorting to heuristics
- * when faced with port representors. Unfortunately it requires at least
- * Linux 4.17.
- *
- * @param nl
- *   Netlink socket of the RDMA kind (NETLINK_RDMA).
- * @param[in] name
- *   IB device name.
- * @param[in] pindex
- *   IB device port index, starting from 1
- * @return
- *   A valid (nonzero) interface index on success, 0 otherwise and rte_errno
- *   is set.
- */
-unsigned int
-mlx5_nl_ifindex(int nl, const char *name, uint32_t pindex)
-{
-	struct mlx5_nl_ifindex_data data = {
-		.name = name,
-		.flags = 0,
-		.ibindex = 0, /* Determined during first pass. */
-		.ifindex = 0, /* Determined during second pass. */
-	};
-	union {
-		struct nlmsghdr nh;
-		uint8_t buf[NLMSG_HDRLEN +
-			    NLA_HDRLEN + NLA_ALIGN(sizeof(data.ibindex)) +
-			    NLA_HDRLEN + NLA_ALIGN(sizeof(pindex))];
-	} req = {
-		.nh = {
-			.nlmsg_len = NLMSG_LENGTH(0),
-			.nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
-						       RDMA_NLDEV_CMD_GET),
-			.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP,
-		},
-	};
-	struct nlattr *na;
-	uint32_t sn = MLX5_NL_SN_GENERATE;
-	int ret;
-
-	ret = mlx5_nl_send(nl, &req.nh, sn);
-	if (ret < 0)
-		return 0;
-	ret = mlx5_nl_recv(nl, sn, mlx5_nl_cmdget_cb, &data);
-	if (ret < 0)
-		return 0;
-	if (!(data.flags & MLX5_NL_CMD_GET_IB_NAME) ||
-	    !(data.flags & MLX5_NL_CMD_GET_IB_INDEX))
-		goto error;
-	data.flags = 0;
-	sn = MLX5_NL_SN_GENERATE;
-	req.nh.nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
-					     RDMA_NLDEV_CMD_PORT_GET);
-	req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
-	req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.buf) - NLMSG_HDRLEN);
-	na = (void *)((uintptr_t)req.buf + NLMSG_HDRLEN);
-	na->nla_len = NLA_HDRLEN + sizeof(data.ibindex);
-	na->nla_type = RDMA_NLDEV_ATTR_DEV_INDEX;
-	memcpy((void *)((uintptr_t)na + NLA_HDRLEN),
-	       &data.ibindex, sizeof(data.ibindex));
-	na = (void *)((uintptr_t)na + NLA_ALIGN(na->nla_len));
-	na->nla_len = NLA_HDRLEN + sizeof(pindex);
-	na->nla_type = RDMA_NLDEV_ATTR_PORT_INDEX;
-	memcpy((void *)((uintptr_t)na + NLA_HDRLEN),
-	       &pindex, sizeof(pindex));
-	ret = mlx5_nl_send(nl, &req.nh, sn);
-	if (ret < 0)
-		return 0;
-	ret = mlx5_nl_recv(nl, sn, mlx5_nl_cmdget_cb, &data);
-	if (ret < 0)
-		return 0;
-	if (!(data.flags & MLX5_NL_CMD_GET_IB_NAME) ||
-	    !(data.flags & MLX5_NL_CMD_GET_IB_INDEX) ||
-	    !(data.flags & MLX5_NL_CMD_GET_NET_INDEX) ||
-	    !data.ifindex)
-		goto error;
-	return data.ifindex;
-error:
-	rte_errno = ENODEV;
-	return 0;
-}
-
-/**
- * Get the number of physical ports of given IB device.
- *
- * @param nl
- *   Netlink socket of the RDMA kind (NETLINK_RDMA).
- * @param[in] name
- *   IB device name.
- *
- * @return
- *   A valid (nonzero) number of ports on success, 0 otherwise
- *   and rte_errno is set.
- */
-unsigned int
-mlx5_nl_portnum(int nl, const char *name)
-{
-	struct mlx5_nl_ifindex_data data = {
-		.flags = 0,
-		.name = name,
-		.ifindex = 0,
-		.portnum = 0,
-	};
-	struct nlmsghdr req = {
-		.nlmsg_len = NLMSG_LENGTH(0),
-		.nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
-					       RDMA_NLDEV_CMD_GET),
-		.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP,
-	};
-	uint32_t sn = MLX5_NL_SN_GENERATE;
-	int ret;
-
-	ret = mlx5_nl_send(nl, &req, sn);
-	if (ret < 0)
-		return 0;
-	ret = mlx5_nl_recv(nl, sn, mlx5_nl_cmdget_cb, &data);
-	if (ret < 0)
-		return 0;
-	if (!(data.flags & MLX5_NL_CMD_GET_IB_NAME) ||
-	    !(data.flags & MLX5_NL_CMD_GET_IB_INDEX) ||
-	    !(data.flags & MLX5_NL_CMD_GET_PORT_INDEX)) {
-		rte_errno = ENODEV;
-		return 0;
-	}
-	if (!data.portnum)
-		rte_errno = EINVAL;
-	return data.portnum;
-}
-
-/**
- * Analyze gathered port parameters via Netlink to recognize master
- * and representor devices for E-Switch configuration.
- *
- * @param[in] num_vf_set
- *   flag of presence of number of VFs port attribute.
- * @param[inout] switch_info
- *   Port information, including port name as a number and port name
- *   type if recognized
- *
- * @return
- *   master and representor flags are set in switch_info according to
- *   recognized parameters (if any).
- */
-static void
-mlx5_nl_check_switch_info(bool num_vf_set,
-			  struct mlx5_switch_info *switch_info)
-{
-	switch (switch_info->name_type) {
-	case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
-		/*
-		 * Name is not recognized, assume the master,
-		 * check the number of VFs key presence.
-		 */
-		switch_info->master = num_vf_set;
-		break;
-	case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
-		/*
-		 * Name is not set, this assumes the legacy naming
-		 * schema for master, just check if there is a
-		 * number of VFs key.
-		 */
-		switch_info->master = num_vf_set;
-		break;
-	case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
-		/* New uplink naming schema recognized. */
-		switch_info->master = 1;
-		break;
-	case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
-		/* Legacy representors naming schema. */
-		switch_info->representor = !num_vf_set;
-		break;
-	case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
-		/* New representors naming schema. */
-		switch_info->representor = 1;
-		break;
-	}
-}
-
-/**
- * Process switch information from Netlink message.
- *
- * @param nh
- *   Pointer to Netlink message header.
- * @param arg
- *   Opaque data pointer for this callback.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-static int
-mlx5_nl_switch_info_cb(struct nlmsghdr *nh, void *arg)
-{
-	struct mlx5_switch_info info = {
-		.master = 0,
-		.representor = 0,
-		.name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
-		.port_name = 0,
-		.switch_id = 0,
-	};
-	size_t off = NLMSG_LENGTH(sizeof(struct ifinfomsg));
-	bool switch_id_set = false;
-	bool num_vf_set = false;
-
-	if (nh->nlmsg_type != RTM_NEWLINK)
-		goto error;
-	while (off < nh->nlmsg_len) {
-		struct rtattr *ra = (void *)((uintptr_t)nh + off);
-		void *payload = RTA_DATA(ra);
-		unsigned int i;
-
-		if (ra->rta_len > nh->nlmsg_len - off)
-			goto error;
-		switch (ra->rta_type) {
-		case IFLA_NUM_VF:
-			num_vf_set = true;
-			break;
-		case IFLA_PHYS_PORT_NAME:
-			mlx5_translate_port_name((char *)payload, &info);
-			break;
-		case IFLA_PHYS_SWITCH_ID:
-			info.switch_id = 0;
-			for (i = 0; i < RTA_PAYLOAD(ra); ++i) {
-				info.switch_id <<= 8;
-				info.switch_id |= ((uint8_t *)payload)[i];
-			}
-			switch_id_set = true;
-			break;
-		}
-		off += RTA_ALIGN(ra->rta_len);
-	}
-	if (switch_id_set) {
-		/* We have some E-Switch configuration. */
-		mlx5_nl_check_switch_info(num_vf_set, &info);
-	}
-	assert(!(info.master && info.representor));
-	memcpy(arg, &info, sizeof(info));
-	return 0;
-error:
-	rte_errno = EINVAL;
-	return -rte_errno;
-}
-
-/**
- * Get switch information associated with network interface.
- *
- * @param nl
- *   Netlink socket of the ROUTE kind (NETLINK_ROUTE).
- * @param ifindex
- *   Network interface index.
- * @param[out] info
- *   Switch information object, populated in case of success.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
-int
-mlx5_nl_switch_info(int nl, unsigned int ifindex,
-		    struct mlx5_switch_info *info)
-{
-	struct {
-		struct nlmsghdr nh;
-		struct ifinfomsg info;
-		struct rtattr rta;
-		uint32_t extmask;
-	} req = {
-		.nh = {
-			.nlmsg_len = NLMSG_LENGTH
-					(sizeof(req.info) +
-					 RTA_LENGTH(sizeof(uint32_t))),
-			.nlmsg_type = RTM_GETLINK,
-			.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
-		},
-		.info = {
-			.ifi_family = AF_UNSPEC,
-			.ifi_index = ifindex,
-		},
-		.rta = {
-			.rta_type = IFLA_EXT_MASK,
-			.rta_len = RTA_LENGTH(sizeof(int32_t)),
-		},
-		.extmask = RTE_LE32(1),
-	};
-	uint32_t sn = MLX5_NL_SN_GENERATE;
-	int ret;
-
-	ret = mlx5_nl_send(nl, &req.nh, sn);
-	if (ret >= 0)
-		ret = mlx5_nl_recv(nl, sn, mlx5_nl_switch_info_cb, info);
-	if (info->master && info->representor) {
-		DRV_LOG(ERR, "ifindex %u device is recognized as master"
-			     " and as representor", ifindex);
-		rte_errno = ENODEV;
-		ret = -rte_errno;
-	}
-	return ret;
-}
-
-/*
- * Delete VLAN network device by ifindex.
- *
- * @param[in] tcf
- *   Context object initialized by mlx5_nl_vlan_vmwa_init().
- * @param[in] ifindex
- *   Interface index of network device to delete.
- */
-void
-mlx5_nl_vlan_vmwa_delete(struct mlx5_nl_vlan_vmwa_context *vmwa,
-		      uint32_t ifindex)
-{
-	uint32_t sn = MLX5_NL_SN_GENERATE;
-	int ret;
-	struct {
-		struct nlmsghdr nh;
-		struct ifinfomsg info;
-	} req = {
-		.nh = {
-			.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
-			.nlmsg_type = RTM_DELLINK,
-			.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
-		},
-		.info = {
-			.ifi_family = AF_UNSPEC,
-			.ifi_index = ifindex,
-		},
-	};
-
-	if (ifindex) {
-		ret = mlx5_nl_send(vmwa->nl_socket, &req.nh, sn);
-		if (ret >= 0)
-			ret = mlx5_nl_recv(vmwa->nl_socket, sn, NULL, NULL);
-		if (ret < 0)
-			DRV_LOG(WARNING, "netlink: error deleting VLAN WA"
-				" ifindex %u, %d", ifindex, ret);
-	}
-}
-
-/* Set of subroutines to build Netlink message. */
-static struct nlattr *
-nl_msg_tail(struct nlmsghdr *nlh)
-{
-	return (struct nlattr *)
-		(((uint8_t *)nlh) + NLMSG_ALIGN(nlh->nlmsg_len));
-}
-
-static void
-nl_attr_put(struct nlmsghdr *nlh, int type, const void *data, int alen)
-{
-	struct nlattr *nla = nl_msg_tail(nlh);
-
-	nla->nla_type = type;
-	nla->nla_len = NLMSG_ALIGN(sizeof(struct nlattr) + alen);
-	nlh->nlmsg_len = NLMSG_ALIGN(nlh->nlmsg_len) + nla->nla_len;
-
-	if (alen)
-		memcpy((uint8_t *)nla + sizeof(struct nlattr), data, alen);
-}
-
-static struct nlattr *
-nl_attr_nest_start(struct nlmsghdr *nlh, int type)
-{
-	struct nlattr *nest = (struct nlattr *)nl_msg_tail(nlh);
-
-	nl_attr_put(nlh, type, NULL, 0);
-	return nest;
-}
-
-static void
-nl_attr_nest_end(struct nlmsghdr *nlh, struct nlattr *nest)
-{
-	nest->nla_len = (uint8_t *)nl_msg_tail(nlh) - (uint8_t *)nest;
-}
-
-/*
- * Create network VLAN device with specified VLAN tag.
- *
- * @param[in] tcf
- *   Context object initialized by mlx5_nl_vlan_vmwa_init().
- * @param[in] ifindex
- *   Base network interface index.
- * @param[in] tag
- *   VLAN tag for VLAN network device to create.
- */
-uint32_t
-mlx5_nl_vlan_vmwa_create(struct mlx5_nl_vlan_vmwa_context *vmwa,
-			 uint32_t ifindex, uint16_t tag)
-{
-	struct nlmsghdr *nlh;
-	struct ifinfomsg *ifm;
-	char name[sizeof(MLX5_VMWA_VLAN_DEVICE_PFX) + 32];
-
-	alignas(RTE_CACHE_LINE_SIZE)
-	uint8_t buf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
-		    NLMSG_ALIGN(sizeof(struct ifinfomsg)) +
-		    NLMSG_ALIGN(sizeof(struct nlattr)) * 8 +
-		    NLMSG_ALIGN(sizeof(uint32_t)) +
-		    NLMSG_ALIGN(sizeof(name)) +
-		    NLMSG_ALIGN(sizeof("vlan")) +
-		    NLMSG_ALIGN(sizeof(uint32_t)) +
-		    NLMSG_ALIGN(sizeof(uint16_t)) + 16];
-	struct nlattr *na_info;
-	struct nlattr *na_vlan;
-	uint32_t sn = MLX5_NL_SN_GENERATE;
-	int ret;
-
-	memset(buf, 0, sizeof(buf));
-	nlh = (struct nlmsghdr *)buf;
-	nlh->nlmsg_len = sizeof(struct nlmsghdr);
-	nlh->nlmsg_type = RTM_NEWLINK;
-	nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE |
-			   NLM_F_EXCL | NLM_F_ACK;
-	ifm = (struct ifinfomsg *)nl_msg_tail(nlh);
-	nlh->nlmsg_len += sizeof(struct ifinfomsg);
-	ifm->ifi_family = AF_UNSPEC;
-	ifm->ifi_type = 0;
-	ifm->ifi_index = 0;
-	ifm->ifi_flags = IFF_UP;
-	ifm->ifi_change = 0xffffffff;
-	nl_attr_put(nlh, IFLA_LINK, &ifindex, sizeof(ifindex));
-	ret = snprintf(name, sizeof(name), "%s.%u.%u",
-		       MLX5_VMWA_VLAN_DEVICE_PFX, ifindex, tag);
-	nl_attr_put(nlh, IFLA_IFNAME, name, ret + 1);
-	na_info = nl_attr_nest_start(nlh, IFLA_LINKINFO);
-	nl_attr_put(nlh, IFLA_INFO_KIND, "vlan", sizeof("vlan"));
-	na_vlan = nl_attr_nest_start(nlh, IFLA_INFO_DATA);
-	nl_attr_put(nlh, IFLA_VLAN_ID, &tag, sizeof(tag));
-	nl_attr_nest_end(nlh, na_vlan);
-	nl_attr_nest_end(nlh, na_info);
-	assert(sizeof(buf) >= nlh->nlmsg_len);
-	ret = mlx5_nl_send(vmwa->nl_socket, nlh, sn);
-	if (ret >= 0)
-		ret = mlx5_nl_recv(vmwa->nl_socket, sn, NULL, NULL);
-	if (ret < 0) {
-		DRV_LOG(WARNING, "netlink: VLAN %s create failure (%d)", name,
-			ret);
-	}
-	// Try to get ifindex of created or pre-existing device.
-	ret = if_nametoindex(name);
-	if (!ret) {
-		DRV_LOG(WARNING, "VLAN %s failed to get index (%d)", name,
-			errno);
-		return 0;
-	}
-	return ret;
-}
diff --git a/drivers/net/mlx5/mlx5_nl.h b/drivers/net/mlx5/mlx5_nl.h
deleted file mode 100644
index 9be87c0..0000000
--- a/drivers/net/mlx5/mlx5_nl.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2019 Mellanox Technologies, Ltd
- */
-
-#ifndef RTE_PMD_MLX5_NL_H_
-#define RTE_PMD_MLX5_NL_H_
-
-#include <linux/netlink.h>
-
-
-/* Recognized Infiniband device physical port name types. */
-enum mlx5_nl_phys_port_name_type {
-	MLX5_PHYS_PORT_NAME_TYPE_NOTSET = 0, /* Not set. */
-	MLX5_PHYS_PORT_NAME_TYPE_LEGACY, /* before kernel ver < 5.0 */
-	MLX5_PHYS_PORT_NAME_TYPE_UPLINK, /* p0, kernel ver >= 5.0 */
-	MLX5_PHYS_PORT_NAME_TYPE_PFVF, /* pf0vf0, kernel ver >= 5.0 */
-	MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN, /* Unrecognized. */
-};
-
-/** Switch information returned by mlx5_nl_switch_info(). */
-struct mlx5_switch_info {
-	uint32_t master:1; /**< Master device. */
-	uint32_t representor:1; /**< Representor device. */
-	enum mlx5_nl_phys_port_name_type name_type; /** < Port name type. */
-	int32_t pf_num; /**< PF number (valid for pfxvfx format only). */
-	int32_t port_name; /**< Representor port name. */
-	uint64_t switch_id; /**< Switch identifier. */
-};
-
-/* VLAN netdev for VLAN workaround. */
-struct mlx5_nl_vlan_dev {
-	uint32_t refcnt;
-	uint32_t ifindex; /**< Own interface index. */
-};
-
-/*
- * Array of VLAN devices created on the base of VF
- * used for workaround in virtual environments.
- */
-struct mlx5_nl_vlan_vmwa_context {
-	int nl_socket;
-	uint32_t vf_ifindex;
-	struct mlx5_nl_vlan_dev vlan_dev[4096];
-};
-
-
-int mlx5_nl_init(int protocol);
-int mlx5_nl_mac_addr_add(int nlsk_fd, unsigned int iface_idx, uint64_t *mac_own,
-			 struct rte_ether_addr *mac, uint32_t index);
-int mlx5_nl_mac_addr_remove(int nlsk_fd, unsigned int iface_idx,
-			    uint64_t *mac_own, struct rte_ether_addr *mac,
-			    uint32_t index);
-void mlx5_nl_mac_addr_sync(int nlsk_fd, unsigned int iface_idx,
-			   struct rte_ether_addr *mac_addrs, int n);
-void mlx5_nl_mac_addr_flush(int nlsk_fd, unsigned int iface_idx,
-			    struct rte_ether_addr *mac_addrs, int n,
-			    uint64_t *mac_own);
-int mlx5_nl_promisc(int nlsk_fd, unsigned int iface_idx, int enable);
-int mlx5_nl_allmulti(int nlsk_fd, unsigned int iface_idx, int enable);
-unsigned int mlx5_nl_portnum(int nl, const char *name);
-unsigned int mlx5_nl_ifindex(int nl, const char *name, uint32_t pindex);
-int mlx5_nl_vf_mac_addr_modify(int nlsk_fd, unsigned int iface_idx,
-			       struct rte_ether_addr *mac, int vf_index);
-int mlx5_nl_switch_info(int nl, unsigned int ifindex,
-			struct mlx5_switch_info *info);
-
-void mlx5_nl_vlan_vmwa_delete(struct mlx5_nl_vlan_vmwa_context *vmwa,
-			      uint32_t ifindex);
-uint32_t mlx5_nl_vlan_vmwa_create(struct mlx5_nl_vlan_vmwa_context *vmwa,
-				  uint32_t ifindex, uint16_t tag);
-
-#endif /* RTE_PMD_MLX5_NL_H_ */
diff --git a/drivers/net/mlx5/mlx5_vlan.c b/drivers/net/mlx5/mlx5_vlan.c
index fc1a91c..8e63b67 100644
--- a/drivers/net/mlx5/mlx5_vlan.c
+++ b/drivers/net/mlx5/mlx5_vlan.c
@@ -33,11 +33,11 @@
 
 #include <mlx5_glue.h>
 #include <mlx5_devx_cmds.h>
+#include <mlx5_nl.h>
 
 #include "mlx5.h"
 #include "mlx5_autoconf.h"
 #include "mlx5_rxtx.h"
-#include "mlx5_nl.h"
 #include "mlx5_utils.h"
 
 /**
