[dpdk-dev] [PATCH v2 12/41] net/mlx5: add helpers for MR & HW operations

[Srikanth Kaka <srikanth.k@oneconvergence.com>]

Given protection domain pointer, pointer to addr and length,
register the memory region.

This patch also defines mlx5_obj_ops.

mlx5_verbs.h & mlx5_verbs.c are equivalent to their Linux
counterparts.

Signed-off-by: Srikanth Kaka <srikanth.k@oneconvergence.com>
Signed-off-by: Vag Singh <vag.singh@oneconvergence.com>
Signed-off-by: Anand Thulasiram <avelu@juniper.net>
---
 drivers/net/mlx5/freebsd/mlx5_verbs.c | 1208 +++++++++++++++++++++++++
 drivers/net/mlx5/freebsd/mlx5_verbs.h |   18 +
 2 files changed, 1226 insertions(+)
 create mode 100644 drivers/net/mlx5/freebsd/mlx5_verbs.c
 create mode 100644 drivers/net/mlx5/freebsd/mlx5_verbs.h

diff --git a/drivers/net/mlx5/freebsd/mlx5_verbs.c b/drivers/net/mlx5/freebsd/mlx5_verbs.c
new file mode 100644
index 0000000000..d4fa202ac4
--- /dev/null
+++ b/drivers/net/mlx5/freebsd/mlx5_verbs.c
@@ -0,0 +1,1208 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2020 Mellanox Technologies, Ltd
+ */
+
+#include <stddef.h>
+#include <errno.h>
+#include <string.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <sys/queue.h>
+
+#include "mlx5_autoconf.h"
+
+#include <rte_mbuf.h>
+#include <rte_malloc.h>
+#include <ethdev_driver.h>
+#include <rte_common.h>
+
+#include <mlx5_glue.h>
+#include <mlx5_common.h>
+#include <mlx5_common_mr.h>
+#include <mlx5_verbs.h>
+#include <mlx5_rx.h>
+#include <mlx5_tx.h>
+#include <mlx5_utils.h>
+#include <mlx5_malloc.h>
+
+/**
+ * Register mr. Given protection domain pointer, pointer to addr and length
+ * register the memory region.
+ *
+ * @param[in] pd
+ *   Pointer to protection domain context.
+ * @param[in] addr
+ *   Pointer to memory start address.
+ * @param[in] length
+ *   Length of the memory to register.
+ * @param[out] pmd_mr
+ *   pmd_mr struct set with lkey, address, length and pointer to mr object
+ *
+ * @return
+ *   0 on successful registration, -1 otherwise
+ */
+static int
+mlx5_reg_mr(void *pd, void *addr, size_t length,
+		 struct mlx5_pmd_mr *pmd_mr)
+{
+	return mlx5_common_verbs_reg_mr(pd, addr, length, pmd_mr);
+}
+
+/**
+ * Deregister mr. Given the mlx5 pmd MR - deregister the MR
+ *
+ * @param[in] pmd_mr
+ *   pmd_mr struct set with lkey, address, length and pointer to mr object
+ *
+ */
+static void
+mlx5_dereg_mr(struct mlx5_pmd_mr *pmd_mr)
+{
+	mlx5_common_verbs_dereg_mr(pmd_mr);
+}
+
+/* verbs operations. */
+const struct mlx5_mr_ops mlx5_mr_verbs_ops = {
+	.reg_mr = mlx5_reg_mr,
+	.dereg_mr = mlx5_dereg_mr,
+};
+
+/**
+ * Modify Rx WQ vlan stripping offload
+ *
+ * @param rxq_obj
+ *   Rx queue object.
+ *
+ * @return 0 on success, non-0 otherwise
+ */
+static int
+mlx5_rxq_obj_modify_wq_vlan_strip(struct mlx5_rxq_obj *rxq_obj, int on)
+{
+	uint16_t vlan_offloads =
+		(on ? IBV_WQ_FLAGS_CVLAN_STRIPPING : 0) |
+		0;
+	struct ibv_wq_attr mod;
+	mod = (struct ibv_wq_attr){
+		.attr_mask = IBV_WQ_ATTR_FLAGS,
+		.flags_mask = IBV_WQ_FLAGS_CVLAN_STRIPPING,
+		.flags = vlan_offloads,
+	};
+
+	return mlx5_glue->modify_wq(rxq_obj->wq, &mod);
+}
+
+/**
+ * Modifies the attributes for the specified WQ.
+ *
+ * @param rxq_obj
+ *   Verbs Rx queue object.
+ * @param type
+ *   Type of change queue state.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_ibv_modify_wq(struct mlx5_rxq_obj *rxq_obj, uint8_t type)
+{
+	struct ibv_wq_attr mod = {
+		.attr_mask = IBV_WQ_ATTR_STATE,
+		.wq_state = (enum ibv_wq_state)type,
+	};
+
+	return mlx5_glue->modify_wq(rxq_obj->wq, &mod);
+}
+
+/**
+ * Modify QP using Verbs API.
+ *
+ * @param txq_obj
+ *   Verbs Tx queue object.
+ * @param type
+ *   Type of change queue state.
+ * @param dev_port
+ *   IB device port number.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_ibv_modify_qp(struct mlx5_txq_obj *obj, enum mlx5_txq_modify_type type,
+		   uint8_t dev_port)
+{
+	struct ibv_qp_attr mod = {
+		.qp_state = IBV_QPS_RESET,
+		.port_num = dev_port,
+	};
+	int attr_mask = (IBV_QP_STATE | IBV_QP_PORT);
+	int ret;
+
+	if (type != MLX5_TXQ_MOD_RST2RDY) {
+		ret = mlx5_glue->modify_qp(obj->qp, &mod, IBV_QP_STATE);
+		if (ret) {
+			DRV_LOG(ERR, "Cannot change Tx QP state to RESET %s",
+				strerror(errno));
+			rte_errno = errno;
+			return ret;
+		}
+		if (type == MLX5_TXQ_MOD_RDY2RST)
+			return 0;
+	}
+	if (type == MLX5_TXQ_MOD_ERR2RDY)
+		attr_mask = IBV_QP_STATE;
+	mod.qp_state = IBV_QPS_INIT;
+	ret = mlx5_glue->modify_qp(obj->qp, &mod, attr_mask);
+	if (ret) {
+		DRV_LOG(ERR, "Cannot change Tx QP state to INIT %s",
+			strerror(errno));
+		rte_errno = errno;
+		return ret;
+	}
+	mod.qp_state = IBV_QPS_RTR;
+	ret = mlx5_glue->modify_qp(obj->qp, &mod, IBV_QP_STATE);
+	if (ret) {
+		DRV_LOG(ERR, "Cannot change Tx QP state to RTR %s",
+			strerror(errno));
+		rte_errno = errno;
+		return ret;
+	}
+	mod.qp_state = IBV_QPS_RTS;
+	ret = mlx5_glue->modify_qp(obj->qp, &mod, IBV_QP_STATE);
+	if (ret) {
+		DRV_LOG(ERR, "Cannot change Tx QP state to RTS %s",
+			strerror(errno));
+		rte_errno = errno;
+		return ret;
+	}
+	return 0;
+}
+
+/**
+ * Create a CQ Verbs object.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param idx
+ *   Queue index in DPDK Rx queue array.
+ *
+ * @return
+ *   The Verbs CQ object initialized, NULL otherwise and rte_errno is set.
+ */
+static struct ibv_cq *
+mlx5_rxq_ibv_cq_create(struct rte_eth_dev *dev, uint16_t idx)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
+	struct mlx5_rxq_ctrl *rxq_ctrl =
+		container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
+	struct mlx5_rxq_obj *rxq_obj = rxq_ctrl->obj;
+	unsigned int cqe_n = mlx5_rxq_cqe_num(rxq_data);
+	struct {
+		struct ibv_cq_init_attr_ex ibv;
+		struct mlx5dv_cq_init_attr mlx5;
+	} cq_attr;
+
+	cq_attr.ibv = (struct ibv_cq_init_attr_ex){
+		.cqe = cqe_n,
+		.channel = rxq_obj->ibv_channel,
+		.comp_mask = 0,
+	};
+	cq_attr.mlx5 = (struct mlx5dv_cq_init_attr){
+		.comp_mask = 0,
+	};
+	if (priv->config.cqe_comp && !rxq_data->hw_timestamp) {
+		cq_attr.mlx5.comp_mask |=
+				MLX5DV_CQ_INIT_ATTR_MASK_COMPRESSED_CQE;
+		rxq_data->byte_mask = UINT32_MAX;
+#ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
+		if (mlx5_rxq_mprq_enabled(rxq_data)) {
+			cq_attr.mlx5.cqe_comp_res_format =
+					MLX5DV_CQE_RES_FORMAT_CSUM_STRIDX;
+			rxq_data->mcqe_format =
+					MLX5_CQE_RESP_FORMAT_CSUM_STRIDX;
+		} else {
+			cq_attr.mlx5.cqe_comp_res_format =
+					MLX5DV_CQE_RES_FORMAT_HASH;
+			rxq_data->mcqe_format =
+					MLX5_CQE_RESP_FORMAT_HASH;
+		}
+#else
+		cq_attr.mlx5.cqe_comp_res_format = MLX5DV_CQE_RES_FORMAT_HASH;
+		rxq_data->mcqe_format = MLX5_CQE_RESP_FORMAT_HASH;
+#endif
+		/*
+		 * For vectorized Rx, it must not be doubled in order to
+		 * make cq_ci and rq_ci aligned.
+		 */
+		if (mlx5_rxq_check_vec_support(rxq_data) < 0)
+			cq_attr.ibv.cqe *= 2;
+	} else if (priv->config.cqe_comp && rxq_data->hw_timestamp) {
+		DRV_LOG(DEBUG,
+			"Port %u Rx CQE compression is disabled for HW"
+			" timestamp.",
+			dev->data->port_id);
+	}
+#ifdef HAVE_IBV_MLX5_MOD_CQE_128B_PAD
+	if (RTE_CACHE_LINE_SIZE == 128) {
+		cq_attr.mlx5.comp_mask |= MLX5DV_CQ_INIT_ATTR_MASK_FLAGS;
+		cq_attr.mlx5.flags |= MLX5DV_CQ_INIT_ATTR_FLAGS_CQE_PAD;
+	}
+#endif
+	return mlx5_glue->cq_ex_to_cq(mlx5_glue->dv_create_cq(priv->sh->ctx,
+							      &cq_attr.ibv,
+							      &cq_attr.mlx5));
+}
+
+/**
+ * Create a WQ Verbs object.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param idx
+ *   Queue index in DPDK Rx queue array.
+ *
+ * @return
+ *   The Verbs WQ object initialized, NULL otherwise and rte_errno is set.
+ */
+static struct ibv_wq *
+mlx5_rxq_ibv_wq_create(struct rte_eth_dev *dev, uint16_t idx)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
+	struct mlx5_rxq_ctrl *rxq_ctrl =
+		container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
+	struct mlx5_rxq_obj *rxq_obj = rxq_ctrl->obj;
+	unsigned int wqe_n = 1 << rxq_data->elts_n;
+	struct {
+		struct ibv_wq_init_attr ibv;
+#ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
+		struct mlx5dv_wq_init_attr mlx5;
+#endif
+	} wq_attr;
+
+	wq_attr.ibv = (struct ibv_wq_init_attr){
+		.wq_context = NULL, /* Could be useful in the future. */
+		.wq_type = IBV_WQT_RQ,
+		/* Max number of outstanding WRs. */
+		.max_wr = wqe_n >> rxq_data->sges_n,
+		/* Max number of scatter/gather elements in a WR. */
+		.max_sge = 1 << rxq_data->sges_n,
+		.pd = priv->sh->pd,
+		.cq = rxq_obj->ibv_cq,
+		.comp_mask = IBV_WQ_FLAGS_CVLAN_STRIPPING | 0,
+		.create_flags = (rxq_data->vlan_strip ?
+				 IBV_WQ_FLAGS_CVLAN_STRIPPING : 0),
+	};
+	/* By default, FCS (CRC) is stripped by hardware. */
+	if (rxq_data->crc_present) {
+		wq_attr.ibv.create_flags |= IBV_WQ_FLAGS_SCATTER_FCS;
+		wq_attr.ibv.comp_mask |= IBV_WQ_INIT_ATTR_FLAGS;
+	}
+	if (priv->config.hw_padding) {
+#if defined(HAVE_IBV_WQ_FLAG_RX_END_PADDING)
+		wq_attr.ibv.create_flags |= IBV_WQ_FLAG_RX_END_PADDING;
+		wq_attr.ibv.comp_mask |= IBV_WQ_INIT_ATTR_FLAGS;
+#elif defined(HAVE_IBV_WQ_FLAGS_PCI_WRITE_END_PADDING)
+		wq_attr.ibv.create_flags |= IBV_WQ_FLAGS_PCI_WRITE_END_PADDING;
+		wq_attr.ibv.comp_mask |= IBV_WQ_INIT_ATTR_FLAGS;
+#endif
+	}
+#ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
+	wq_attr.mlx5 = (struct mlx5dv_wq_init_attr){
+		.comp_mask = 0,
+	};
+	if (mlx5_rxq_mprq_enabled(rxq_data)) {
+		struct mlx5dv_striding_rq_init_attr *mprq_attr =
+						&wq_attr.mlx5.striding_rq_attrs;
+
+		wq_attr.mlx5.comp_mask |= MLX5DV_WQ_INIT_ATTR_MASK_STRIDING_RQ;
+		*mprq_attr = (struct mlx5dv_striding_rq_init_attr){
+			.single_stride_log_num_of_bytes = rxq_data->strd_sz_n,
+			.single_wqe_log_num_of_strides = rxq_data->strd_num_n,
+			.two_byte_shift_en = MLX5_MPRQ_TWO_BYTE_SHIFT,
+		};
+	}
+	rxq_obj->wq = mlx5_glue->dv_create_wq(priv->sh->ctx, &wq_attr.ibv,
+					      &wq_attr.mlx5);
+#else
+	rxq_obj->wq = mlx5_glue->create_wq(priv->sh->ctx, &wq_attr.ibv);
+#endif
+	if (rxq_obj->wq) {
+		/*
+		 * Make sure number of WRs*SGEs match expectations since a queue
+		 * cannot allocate more than "desc" buffers.
+		 */
+		if (wq_attr.ibv.max_wr != (wqe_n >> rxq_data->sges_n) ||
+		    wq_attr.ibv.max_sge != (1u << rxq_data->sges_n)) {
+			DRV_LOG(ERR,
+				"Port %u Rx queue %u requested %u*%u but got"
+				" %u*%u WRs*SGEs.",
+				dev->data->port_id, idx,
+				wqe_n >> rxq_data->sges_n,
+				(1 << rxq_data->sges_n),
+				wq_attr.ibv.max_wr, wq_attr.ibv.max_sge);
+			claim_zero(mlx5_glue->destroy_wq(rxq_obj->wq));
+			rxq_obj->wq = NULL;
+			rte_errno = EINVAL;
+		}
+	}
+	return rxq_obj->wq;
+}
+
+/**
+ * Create the Rx queue Verbs object.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param idx
+ *   Queue index in DPDK Rx queue array.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_rxq_ibv_obj_new(struct rte_eth_dev *dev, uint16_t idx)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[idx];
+	struct mlx5_rxq_ctrl *rxq_ctrl =
+		container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
+	struct mlx5_rxq_obj *tmpl = rxq_ctrl->obj;
+	struct mlx5dv_cq cq_info;
+	struct mlx5dv_rwq rwq;
+	int ret = 0;
+	struct mlx5dv_obj obj;
+
+	MLX5_ASSERT(rxq_data);
+	MLX5_ASSERT(tmpl);
+	tmpl->rxq_ctrl = rxq_ctrl;
+	if (rxq_ctrl->irq) {
+		tmpl->ibv_channel =
+				mlx5_glue->create_comp_channel(priv->sh->ctx);
+		if (!tmpl->ibv_channel) {
+			DRV_LOG(ERR, "Port %u: comp channel creation failure.",
+				dev->data->port_id);
+			rte_errno = ENOMEM;
+			goto error;
+		}
+		tmpl->fd = ((struct ibv_comp_channel *)(tmpl->ibv_channel))->fd;
+	}
+	/* Create CQ using Verbs API. */
+	tmpl->ibv_cq = mlx5_rxq_ibv_cq_create(dev, idx);
+	if (!tmpl->ibv_cq) {
+		DRV_LOG(ERR, "Port %u Rx queue %u CQ creation failure.",
+			dev->data->port_id, idx);
+		rte_errno = ENOMEM;
+		goto error;
+	}
+	obj.cq.in = tmpl->ibv_cq;
+	obj.cq.out = &cq_info;
+	ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_CQ);
+	if (ret) {
+		rte_errno = ret;
+		goto error;
+	}
+	if (cq_info.cqe_size != RTE_CACHE_LINE_SIZE) {
+		DRV_LOG(ERR,
+			"Port %u wrong MLX5_CQE_SIZE environment "
+			"variable value: it should be set to %u.",
+			dev->data->port_id, RTE_CACHE_LINE_SIZE);
+		rte_errno = EINVAL;
+		goto error;
+	}
+	/* Fill the rings. */
+	rxq_data->cqe_n = log2above(cq_info.cqe_cnt);
+	rxq_data->cq_db = cq_info.dbrec;
+	rxq_data->cqes = (volatile struct mlx5_cqe (*)[])(uintptr_t)cq_info.buf;
+	rxq_data->cq_uar = cq_info.cq_uar;
+	rxq_data->cqn = cq_info.cqn;
+	/* Create WQ (RQ) using Verbs API. */
+	tmpl->wq = mlx5_rxq_ibv_wq_create(dev, idx);
+	if (!tmpl->wq) {
+		DRV_LOG(ERR, "Port %u Rx queue %u WQ creation failure.",
+			dev->data->port_id, idx);
+		rte_errno = ENOMEM;
+		goto error;
+	}
+	/* Change queue state to ready. */
+	ret = mlx5_ibv_modify_wq(tmpl, IBV_WQS_RDY);
+	if (ret) {
+		DRV_LOG(ERR,
+			"Port %u Rx queue %u WQ state to IBV_WQS_RDY failed.",
+			dev->data->port_id, idx);
+		rte_errno = ret;
+		goto error;
+	}
+	obj.rwq.in = tmpl->wq;
+	obj.rwq.out = &rwq;
+	ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_RWQ);
+	if (ret) {
+		rte_errno = ret;
+		goto error;
+	}
+	rxq_data->wqes = rwq.buf;
+	rxq_data->rq_db = rwq.dbrec;
+	rxq_data->cq_arm_sn = 0;
+	mlx5_rxq_initialize(rxq_data);
+	rxq_data->cq_ci = 0;
+	dev->data->rx_queue_state[idx] = RTE_ETH_QUEUE_STATE_STARTED;
+	rxq_ctrl->wqn = ((struct ibv_wq *)(tmpl->wq))->wq_num;
+	return 0;
+error:
+	ret = rte_errno; /* Save rte_errno before cleanup. */
+	if (tmpl->wq)
+		claim_zero(mlx5_glue->destroy_wq(tmpl->wq));
+	if (tmpl->ibv_cq)
+		claim_zero(mlx5_glue->destroy_cq(tmpl->ibv_cq));
+	if (tmpl->ibv_channel)
+		claim_zero(mlx5_glue->destroy_comp_channel(tmpl->ibv_channel));
+	rte_errno = ret; /* Restore rte_errno. */
+	return -rte_errno;
+}
+
+/**
+ * Release an Rx verbs queue object.
+ *
+ * @param rxq_obj
+ *   Verbs Rx queue object.
+ */
+static void
+mlx5_rxq_ibv_obj_release(struct mlx5_rxq_obj *rxq_obj)
+{
+	MLX5_ASSERT(rxq_obj);
+	MLX5_ASSERT(rxq_obj->wq);
+	MLX5_ASSERT(rxq_obj->ibv_cq);
+	claim_zero(mlx5_glue->destroy_wq(rxq_obj->wq));
+	claim_zero(mlx5_glue->destroy_cq(rxq_obj->ibv_cq));
+	if (rxq_obj->ibv_channel)
+		claim_zero(mlx5_glue->destroy_comp_channel
+							(rxq_obj->ibv_channel));
+}
+
+/**
+ * Get event for an Rx verbs queue object.
+ *
+ * @param rxq_obj
+ *   Verbs Rx queue object.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_rx_ibv_get_event(struct mlx5_rxq_obj *rxq_obj)
+{
+	struct ibv_cq *ev_cq;
+	void *ev_ctx;
+	int ret = mlx5_glue->get_cq_event(rxq_obj->ibv_channel,
+					  &ev_cq, &ev_ctx);
+
+	if (ret < 0 || ev_cq != rxq_obj->ibv_cq)
+		goto exit;
+	mlx5_glue->ack_cq_events(rxq_obj->ibv_cq, 1);
+	return 0;
+exit:
+	if (ret < 0)
+		rte_errno = errno;
+	else
+		rte_errno = EINVAL;
+	return -rte_errno;
+}
+
+/**
+ * Creates a receive work queue as a filed of indirection table.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param log_n
+ *   Log of number of queues in the array.
+ * @param ind_tbl
+ *   Verbs indirection table object.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_ibv_ind_table_new(struct rte_eth_dev *dev, const unsigned int log_n,
+		       struct mlx5_ind_table_obj *ind_tbl)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct ibv_wq *wq[1 << log_n];
+	unsigned int i, j;
+
+	MLX5_ASSERT(ind_tbl);
+	for (i = 0; i != ind_tbl->queues_n; ++i) {
+		struct mlx5_rxq_data *rxq = (*priv->rxqs)[ind_tbl->queues[i]];
+		struct mlx5_rxq_ctrl *rxq_ctrl =
+				container_of(rxq, struct mlx5_rxq_ctrl, rxq);
+
+		wq[i] = rxq_ctrl->obj->wq;
+	}
+	MLX5_ASSERT(i > 0);
+	/* Finalise indirection table. */
+	for (j = 0; i != (unsigned int)(1 << log_n); ++j, ++i)
+		wq[i] = wq[j];
+	ind_tbl->ind_table = mlx5_glue->create_rwq_ind_table(priv->sh->ctx,
+					&(struct ibv_rwq_ind_table_init_attr){
+						.log_ind_tbl_size = log_n,
+						.ind_tbl = wq,
+						.comp_mask = 0,
+					});
+	if (!ind_tbl->ind_table) {
+		rte_errno = errno;
+		return -rte_errno;
+	}
+	return 0;
+}
+
+/**
+ * Destroys the specified Indirection Table.
+ *
+ * @param ind_table
+ *   Indirection table to release.
+ */
+static void
+mlx5_ibv_ind_table_destroy(struct mlx5_ind_table_obj *ind_tbl)
+{
+	claim_zero(mlx5_glue->destroy_rwq_ind_table(ind_tbl->ind_table));
+}
+
+/**
+ * Create an Rx Hash queue.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param hrxq
+ *   Pointer to Rx Hash queue.
+ * @param tunnel
+ *   Tunnel type.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_ibv_hrxq_new(struct rte_eth_dev *dev, struct mlx5_hrxq *hrxq,
+		  int tunnel __rte_unused)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct ibv_qp *qp = NULL;
+	struct mlx5_ind_table_obj *ind_tbl = hrxq->ind_table;
+	const uint8_t *rss_key = hrxq->rss_key;
+	uint64_t hash_fields = hrxq->hash_fields;
+	int err;
+#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
+	struct mlx5dv_qp_init_attr qp_init_attr;
+
+	memset(&qp_init_attr, 0, sizeof(qp_init_attr));
+	if (tunnel) {
+		qp_init_attr.comp_mask =
+				       MLX5DV_QP_INIT_ATTR_MASK_QP_CREATE_FLAGS;
+		qp_init_attr.create_flags = MLX5DV_QP_CREATE_TUNNEL_OFFLOADS;
+	}
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	if (dev->data->dev_conf.lpbk_mode) {
+		/* Allow packet sent from NIC loop back w/o source MAC check. */
+		qp_init_attr.comp_mask |=
+				MLX5DV_QP_INIT_ATTR_MASK_QP_CREATE_FLAGS;
+		qp_init_attr.create_flags |=
+				MLX5DV_QP_CREATE_TIR_ALLOW_SELF_LOOPBACK_UC;
+	}
+#endif
+	qp = mlx5_glue->dv_create_qp
+			(priv->sh->ctx,
+			 &(struct ibv_qp_init_attr_ex){
+				.qp_type = IBV_QPT_RAW_PACKET,
+				.comp_mask =
+					IBV_QP_INIT_ATTR_PD |
+					IBV_QP_INIT_ATTR_IND_TABLE |
+					IBV_QP_INIT_ATTR_RX_HASH,
+				.rx_hash_conf = (struct ibv_rx_hash_conf){
+					.rx_hash_function =
+						IBV_RX_HASH_FUNC_TOEPLITZ,
+					.rx_hash_key_len = hrxq->rss_key_len,
+					.rx_hash_key =
+						(void *)(uintptr_t)rss_key,
+					.rx_hash_fields_mask = hash_fields,
+				},
+				.rwq_ind_tbl = ind_tbl->ind_table,
+				.pd = priv->sh->pd,
+			  },
+			  &qp_init_attr);
+#else
+	qp = mlx5_glue->create_qp_ex
+			(priv->sh->ctx,
+			 &(struct ibv_qp_init_attr_ex){
+				.qp_type = IBV_QPT_RAW_PACKET,
+				.comp_mask =
+					IBV_QP_INIT_ATTR_PD |
+					IBV_QP_INIT_ATTR_IND_TABLE |
+					IBV_QP_INIT_ATTR_RX_HASH,
+				.rx_hash_conf = (struct ibv_rx_hash_conf){
+					.rx_hash_function =
+						IBV_RX_HASH_FUNC_TOEPLITZ,
+					.rx_hash_key_len = hrxq->rss_key_len,
+					.rx_hash_key =
+						(void *)(uintptr_t)rss_key,
+					.rx_hash_fields_mask = hash_fields,
+				},
+				.rwq_ind_tbl = ind_tbl->ind_table,
+				.pd = priv->sh->pd,
+			 });
+#endif
+	if (!qp) {
+		rte_errno = errno;
+		goto error;
+	}
+	hrxq->qp = qp;
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	hrxq->action = mlx5_glue->dv_create_flow_action_dest_ibv_qp(hrxq->qp);
+	if (!hrxq->action) {
+		rte_errno = errno;
+		goto error;
+	}
+#endif
+	return 0;
+error:
+	err = rte_errno; /* Save rte_errno before cleanup. */
+	if (qp)
+		claim_zero(mlx5_glue->destroy_qp(qp));
+	rte_errno = err; /* Restore rte_errno. */
+	return -rte_errno;
+}
+
+/**
+ * Destroy a Verbs queue pair.
+ *
+ * @param hrxq
+ *   Hash Rx queue to release its qp.
+ */
+static void
+mlx5_ibv_qp_destroy(struct mlx5_hrxq *hrxq)
+{
+	claim_zero(mlx5_glue->destroy_qp(hrxq->qp));
+}
+
+/**
+ * Release a drop Rx queue Verbs object.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ */
+static void
+mlx5_rxq_ibv_obj_drop_release(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_rxq_obj *rxq = priv->drop_queue.rxq;
+
+	if (rxq->wq)
+		claim_zero(mlx5_glue->destroy_wq(rxq->wq));
+	if (rxq->ibv_cq)
+		claim_zero(mlx5_glue->destroy_cq(rxq->ibv_cq));
+	mlx5_free(rxq);
+	priv->drop_queue.rxq = NULL;
+}
+
+/**
+ * Create a drop Rx queue Verbs object.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_rxq_ibv_obj_drop_create(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct ibv_context *ctx = priv->sh->ctx;
+	struct mlx5_rxq_obj *rxq = priv->drop_queue.rxq;
+
+	if (rxq)
+		return 0;
+	rxq = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*rxq), 0, SOCKET_ID_ANY);
+	if (!rxq) {
+		DRV_LOG(DEBUG, "Port %u cannot allocate drop Rx queue memory.",
+		      dev->data->port_id);
+		rte_errno = ENOMEM;
+		return -rte_errno;
+	}
+	priv->drop_queue.rxq = rxq;
+	rxq->ibv_cq = mlx5_glue->create_cq(ctx, 1, NULL, NULL, 0);
+	if (!rxq->ibv_cq) {
+		DRV_LOG(DEBUG, "Port %u cannot allocate CQ for drop queue.",
+		      dev->data->port_id);
+		rte_errno = errno;
+		goto error;
+	}
+	rxq->wq = mlx5_glue->create_wq(ctx, &(struct ibv_wq_init_attr){
+						    .wq_type = IBV_WQT_RQ,
+						    .max_wr = 1,
+						    .max_sge = 1,
+						    .pd = priv->sh->pd,
+						    .cq = rxq->ibv_cq,
+					      });
+	if (!rxq->wq) {
+		DRV_LOG(DEBUG, "Port %u cannot allocate WQ for drop queue.",
+		      dev->data->port_id);
+		rte_errno = errno;
+		goto error;
+	}
+	priv->drop_queue.rxq = rxq;
+	return 0;
+error:
+	mlx5_rxq_ibv_obj_drop_release(dev);
+	return -rte_errno;
+}
+
+/**
+ * Create a Verbs drop action for Rx Hash queue.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+mlx5_ibv_drop_action_create(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_hrxq *hrxq = priv->drop_queue.hrxq;
+	struct ibv_rwq_ind_table *ind_tbl = NULL;
+	struct mlx5_rxq_obj *rxq;
+	int ret;
+
+	MLX5_ASSERT(hrxq && hrxq->ind_table);
+	ret = mlx5_rxq_ibv_obj_drop_create(dev);
+	if (ret < 0)
+		goto error;
+	rxq = priv->drop_queue.rxq;
+	ind_tbl = mlx5_glue->create_rwq_ind_table
+				(priv->sh->ctx,
+				 &(struct ibv_rwq_ind_table_init_attr){
+					.log_ind_tbl_size = 0,
+					.ind_tbl = (struct ibv_wq **)&rxq->wq,
+					.comp_mask = 0,
+				 });
+	if (!ind_tbl) {
+		DRV_LOG(DEBUG, "Port %u"
+			" cannot allocate indirection table for drop queue.",
+			dev->data->port_id);
+		rte_errno = errno;
+		goto error;
+	}
+	hrxq->qp = mlx5_glue->create_qp_ex(priv->sh->ctx,
+		 &(struct ibv_qp_init_attr_ex){
+			.qp_type = IBV_QPT_RAW_PACKET,
+			.comp_mask = IBV_QP_INIT_ATTR_PD |
+				     IBV_QP_INIT_ATTR_IND_TABLE |
+				     IBV_QP_INIT_ATTR_RX_HASH,
+			.rx_hash_conf = (struct ibv_rx_hash_conf){
+				.rx_hash_function = IBV_RX_HASH_FUNC_TOEPLITZ,
+				.rx_hash_key_len = MLX5_RSS_HASH_KEY_LEN,
+				.rx_hash_key = rss_hash_default_key,
+				.rx_hash_fields_mask = 0,
+				},
+			.rwq_ind_tbl = ind_tbl,
+			.pd = priv->sh->pd
+		 });
+	if (!hrxq->qp) {
+		DRV_LOG(DEBUG, "Port %u cannot allocate QP for drop queue.",
+		      dev->data->port_id);
+		rte_errno = errno;
+		goto error;
+	}
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	hrxq->action = mlx5_glue->dv_create_flow_action_dest_ibv_qp(hrxq->qp);
+	if (!hrxq->action) {
+		rte_errno = errno;
+		goto error;
+	}
+#endif
+	hrxq->ind_table->ind_table = ind_tbl;
+	return 0;
+error:
+	if (hrxq->qp)
+		claim_zero(mlx5_glue->destroy_qp(hrxq->qp));
+	if (ind_tbl)
+		claim_zero(mlx5_glue->destroy_rwq_ind_table(ind_tbl));
+	if (priv->drop_queue.rxq)
+		mlx5_rxq_ibv_obj_drop_release(dev);
+	return -rte_errno;
+}
+
+/**
+ * Release a drop hash Rx queue.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ */
+static void
+mlx5_ibv_drop_action_destroy(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_hrxq *hrxq = priv->drop_queue.hrxq;
+	struct ibv_rwq_ind_table *ind_tbl = hrxq->ind_table->ind_table;
+
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	claim_zero(mlx5_glue->destroy_flow_action(hrxq->action));
+#endif
+	claim_zero(mlx5_glue->destroy_qp(hrxq->qp));
+	claim_zero(mlx5_glue->destroy_rwq_ind_table(ind_tbl));
+	mlx5_rxq_ibv_obj_drop_release(dev);
+}
+
+/**
+ * Create a QP Verbs object.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param idx
+ *   Queue index in DPDK Tx queue array.
+ *
+ * @return
+ *   The QP Verbs object, NULL otherwise and rte_errno is set.
+ */
+static struct ibv_qp *
+mlx5_txq_ibv_qp_create(struct rte_eth_dev *dev, uint16_t idx)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
+	struct mlx5_txq_ctrl *txq_ctrl =
+			container_of(txq_data, struct mlx5_txq_ctrl, txq);
+	struct ibv_qp *qp_obj = NULL;
+	struct ibv_qp_init_attr_ex qp_attr = { 0 };
+	const int desc = 1 << txq_data->elts_n;
+
+	MLX5_ASSERT(txq_ctrl->obj->cq);
+	/* CQ to be associated with the send queue. */
+	qp_attr.send_cq = txq_ctrl->obj->cq;
+	/* CQ to be associated with the receive queue. */
+	qp_attr.recv_cq = txq_ctrl->obj->cq;
+	/* Max number of outstanding WRs. */
+	qp_attr.cap.max_send_wr = ((priv->sh->device_attr.max_qp_wr < desc) ?
+				   priv->sh->device_attr.max_qp_wr : desc);
+	/*
+	 * Max number of scatter/gather elements in a WR, must be 1 to prevent
+	 * libmlx5 from trying to affect must be 1 to prevent libmlx5 from
+	 * trying to affect too much memory. TX gather is not impacted by the
+	 * device_attr.max_sge limit and will still work properly.
+	 */
+	qp_attr.cap.max_send_sge = 1;
+	qp_attr.qp_type = IBV_QPT_RAW_PACKET,
+	/* Do *NOT* enable this, completions events are managed per Tx burst. */
+	qp_attr.sq_sig_all = 0;
+	qp_attr.pd = priv->sh->pd;
+	qp_attr.comp_mask = IBV_QP_INIT_ATTR_PD;
+	if (txq_data->inlen_send)
+		qp_attr.cap.max_inline_data = txq_ctrl->max_inline_data;
+	if (txq_data->tso_en) {
+		qp_attr.max_tso_header = txq_ctrl->max_tso_header;
+		qp_attr.comp_mask |= IBV_QP_INIT_ATTR_MAX_TSO_HEADER;
+	}
+	qp_obj = mlx5_glue->create_qp_ex(priv->sh->ctx, &qp_attr);
+	if (qp_obj == NULL) {
+		DRV_LOG(ERR, "Port %u Tx queue %u QP creation failure.",
+			dev->data->port_id, idx);
+		rte_errno = errno;
+	}
+	return qp_obj;
+}
+
+/**
+ * Create the Tx queue Verbs object.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param idx
+ *   Queue index in DPDK Tx queue array.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_txq_ibv_obj_new(struct rte_eth_dev *dev, uint16_t idx)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
+	struct mlx5_txq_ctrl *txq_ctrl =
+		container_of(txq_data, struct mlx5_txq_ctrl, txq);
+	struct mlx5_txq_obj *txq_obj = txq_ctrl->obj;
+	unsigned int cqe_n;
+	struct mlx5dv_qp qp;
+	struct mlx5dv_cq cq_info;
+	struct mlx5dv_obj obj;
+	const int desc = 1 << txq_data->elts_n;
+	int ret = 0;
+
+	MLX5_ASSERT(txq_data);
+	MLX5_ASSERT(txq_obj);
+	txq_obj->txq_ctrl = txq_ctrl;
+	if (mlx5_getenv_int("MLX5_ENABLE_CQE_COMPRESSION")) {
+		DRV_LOG(ERR, "Port %u MLX5_ENABLE_CQE_COMPRESSION "
+			"must never be set.", dev->data->port_id);
+		rte_errno = EINVAL;
+		return -rte_errno;
+	}
+	cqe_n = desc / MLX5_TX_COMP_THRESH +
+		1 + MLX5_TX_COMP_THRESH_INLINE_DIV;
+	txq_obj->cq = mlx5_glue->create_cq(priv->sh->ctx, cqe_n, NULL, NULL, 0);
+	if (txq_obj->cq == NULL) {
+		DRV_LOG(ERR, "Port %u Tx queue %u CQ creation failure.",
+			dev->data->port_id, idx);
+		rte_errno = errno;
+		goto error;
+	}
+	txq_obj->qp = mlx5_txq_ibv_qp_create(dev, idx);
+	if (txq_obj->qp == NULL) {
+		rte_errno = errno;
+		goto error;
+	}
+	ret = mlx5_ibv_modify_qp(txq_obj, MLX5_TXQ_MOD_RST2RDY,
+				 (uint8_t)priv->dev_port);
+	if (ret) {
+		DRV_LOG(ERR, "Port %u Tx queue %u QP state modifying failed.",
+			dev->data->port_id, idx);
+		rte_errno = errno;
+		goto error;
+	}
+	qp.comp_mask = MLX5DV_QP_MASK_UAR_MMAP_OFFSET;
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	/* If using DevX, need additional mask to read tisn value. */
+	if (priv->sh->devx && !priv->sh->tdn)
+		qp.comp_mask |= MLX5DV_QP_MASK_RAW_QP_HANDLES;
+#endif
+	obj.cq.in = txq_obj->cq;
+	obj.cq.out = &cq_info;
+	obj.qp.in = txq_obj->qp;
+	obj.qp.out = &qp;
+	ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_CQ | MLX5DV_OBJ_QP);
+	if (ret != 0) {
+		rte_errno = errno;
+		goto error;
+	}
+	if (cq_info.cqe_size != RTE_CACHE_LINE_SIZE) {
+		DRV_LOG(ERR,
+			"Port %u wrong MLX5_CQE_SIZE environment variable"
+			" value: it should be set to %u.",
+			dev->data->port_id, RTE_CACHE_LINE_SIZE);
+		rte_errno = EINVAL;
+		goto error;
+	}
+	txq_data->cqe_n = log2above(cq_info.cqe_cnt);
+	txq_data->cqe_s = 1 << txq_data->cqe_n;
+	txq_data->cqe_m = txq_data->cqe_s - 1;
+	txq_data->qp_num_8s = ((struct ibv_qp *)txq_obj->qp)->qp_num << 8;
+	txq_data->wqes = qp.sq.buf;
+	txq_data->wqe_n = log2above(qp.sq.wqe_cnt);
+	txq_data->wqe_s = 1 << txq_data->wqe_n;
+	txq_data->wqe_m = txq_data->wqe_s - 1;
+	txq_data->wqes_end = txq_data->wqes + txq_data->wqe_s;
+	txq_data->qp_db = &qp.dbrec[MLX5_SND_DBR];
+	txq_data->cq_db = cq_info.dbrec;
+	txq_data->cqes = (volatile struct mlx5_cqe *)cq_info.buf;
+	txq_data->cq_ci = 0;
+	txq_data->cq_pi = 0;
+	txq_data->wqe_ci = 0;
+	txq_data->wqe_pi = 0;
+	txq_data->wqe_comp = 0;
+	txq_data->wqe_thres = txq_data->wqe_s / MLX5_TX_COMP_THRESH_INLINE_DIV;
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	/*
+	 * If using DevX need to query and store TIS transport domain value.
+	 * This is done once per port.
+	 * Will use this value on Rx, when creating matching TIR.
+	 */
+	if (priv->sh->devx && !priv->sh->tdn) {
+		ret = mlx5_devx_cmd_qp_query_tis_td(txq_obj->qp, qp.tisn,
+						    &priv->sh->tdn);
+		if (ret) {
+			DRV_LOG(ERR, "Fail to query port %u Tx queue %u QP TIS "
+				"transport domain.", dev->data->port_id, idx);
+			rte_errno = EINVAL;
+			goto error;
+		} else {
+			DRV_LOG(DEBUG, "Port %u Tx queue %u TIS number %d "
+				"transport domain %d.", dev->data->port_id,
+				idx, qp.tisn, priv->sh->tdn);
+		}
+	}
+#endif
+	txq_ctrl->bf_reg = qp.bf.reg;
+	if (qp.comp_mask & MLX5DV_QP_MASK_UAR_MMAP_OFFSET) {
+		txq_ctrl->uar_mmap_offset = qp.uar_mmap_offset;
+		DRV_LOG(DEBUG, "Port %u: uar_mmap_offset 0x%" PRIx64 ".",
+			dev->data->port_id, txq_ctrl->uar_mmap_offset);
+	} else {
+		DRV_LOG(ERR,
+			"Port %u failed to retrieve UAR info, invalid"
+			" libmlx5.so",
+			dev->data->port_id);
+		rte_errno = EINVAL;
+		goto error;
+	}
+	txq_uar_init(txq_ctrl);
+	dev->data->tx_queue_state[idx] = RTE_ETH_QUEUE_STATE_STARTED;
+	return 0;
+error:
+	ret = rte_errno; /* Save rte_errno before cleanup. */
+	if (txq_obj->cq)
+		claim_zero(mlx5_glue->destroy_cq(txq_obj->cq));
+	if (txq_obj->qp)
+		claim_zero(mlx5_glue->destroy_qp(txq_obj->qp));
+	rte_errno = ret; /* Restore rte_errno. */
+	return -rte_errno;
+}
+
+/*
+ * Create the dummy QP with minimal resources for loopback.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_rxq_ibv_obj_dummy_lb_create(struct rte_eth_dev *dev)
+{
+#if defined(HAVE_IBV_DEVICE_TUNNEL_SUPPORT) && defined(HAVE_IBV_FLOW_DV_SUPPORT)
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_dev_ctx_shared *sh = priv->sh;
+	struct ibv_context *ctx = sh->ctx;
+	struct mlx5dv_qp_init_attr qp_init_attr = {0};
+	struct {
+		struct ibv_cq_init_attr_ex ibv;
+		struct mlx5dv_cq_init_attr mlx5;
+	} cq_attr = {{0}};
+
+	if (dev->data->dev_conf.lpbk_mode) {
+		/* Allow packet sent from NIC loop back w/o source MAC check. */
+		qp_init_attr.comp_mask |=
+				MLX5DV_QP_INIT_ATTR_MASK_QP_CREATE_FLAGS;
+		qp_init_attr.create_flags |=
+				MLX5DV_QP_CREATE_TIR_ALLOW_SELF_LOOPBACK_UC;
+	} else {
+		return 0;
+	}
+	/* Only need to check refcnt, 0 after "sh" is allocated. */
+	if (!!(__atomic_fetch_add(&sh->self_lb.refcnt, 1, __ATOMIC_RELAXED))) {
+		MLX5_ASSERT(sh->self_lb.ibv_cq && sh->self_lb.qp);
+		priv->lb_used = 1;
+		return 0;
+	}
+	cq_attr.ibv = (struct ibv_cq_init_attr_ex){
+		.cqe = 1,
+		.channel = NULL,
+		.comp_mask = 0,
+	};
+	cq_attr.mlx5 = (struct mlx5dv_cq_init_attr){
+		.comp_mask = 0,
+	};
+	/* Only CQ is needed, no WQ(RQ) is required in this case. */
+	sh->self_lb.ibv_cq = mlx5_glue->cq_ex_to_cq(mlx5_glue->dv_create_cq(ctx,
+							&cq_attr.ibv,
+							&cq_attr.mlx5));
+	if (!sh->self_lb.ibv_cq) {
+		DRV_LOG(ERR, "Port %u cannot allocate CQ for loopback.",
+			dev->data->port_id);
+		rte_errno = errno;
+		goto error;
+	}
+	sh->self_lb.qp = mlx5_glue->dv_create_qp(ctx,
+				&(struct ibv_qp_init_attr_ex){
+					.qp_type = IBV_QPT_RAW_PACKET,
+					.comp_mask = IBV_QP_INIT_ATTR_PD,
+					.pd = sh->pd,
+					.send_cq = sh->self_lb.ibv_cq,
+					.recv_cq = sh->self_lb.ibv_cq,
+					.cap.max_recv_wr = 1,
+				},
+				&qp_init_attr);
+	if (!sh->self_lb.qp) {
+		DRV_LOG(DEBUG, "Port %u cannot allocate QP for loopback.",
+			dev->data->port_id);
+		rte_errno = errno;
+		goto error;
+	}
+	priv->lb_used = 1;
+	return 0;
+error:
+	if (sh->self_lb.ibv_cq) {
+		claim_zero(mlx5_glue->destroy_cq(sh->self_lb.ibv_cq));
+		sh->self_lb.ibv_cq = NULL;
+	}
+	(void)__atomic_sub_fetch(&sh->self_lb.refcnt, 1, __ATOMIC_RELAXED);
+	return -rte_errno;
+#else
+	RTE_SET_USED(dev);
+	return 0;
+#endif
+}
+
+/*
+ * Release the dummy queue resources for loopback.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ */
+void
+mlx5_rxq_ibv_obj_dummy_lb_release(struct rte_eth_dev *dev)
+{
+#if defined(HAVE_IBV_DEVICE_TUNNEL_SUPPORT) && defined(HAVE_IBV_FLOW_DV_SUPPORT)
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_dev_ctx_shared *sh = priv->sh;
+
+	if (!priv->lb_used)
+		return;
+	MLX5_ASSERT(__atomic_load_n(&sh->self_lb.refcnt, __ATOMIC_RELAXED));
+	if (!(__atomic_sub_fetch(&sh->self_lb.refcnt, 1, __ATOMIC_RELAXED))) {
+		if (sh->self_lb.qp) {
+			claim_zero(mlx5_glue->destroy_qp(sh->self_lb.qp));
+			sh->self_lb.qp = NULL;
+		}
+		if (sh->self_lb.ibv_cq) {
+			claim_zero(mlx5_glue->destroy_cq(sh->self_lb.ibv_cq));
+			sh->self_lb.ibv_cq = NULL;
+		}
+	}
+	priv->lb_used = 0;
+#else
+	RTE_SET_USED(dev);
+	return;
+#endif
+}
+
+/**
+ * Release an Tx verbs queue object.
+ *
+ * @param txq_obj
+ *   Verbs Tx queue object..
+ */
+void
+mlx5_txq_ibv_obj_release(struct mlx5_txq_obj *txq_obj)
+{
+	MLX5_ASSERT(txq_obj);
+	claim_zero(mlx5_glue->destroy_qp(txq_obj->qp));
+	claim_zero(mlx5_glue->destroy_cq(txq_obj->cq));
+}
+
+struct mlx5_obj_ops ibv_obj_ops = {
+	.rxq_obj_modify_vlan_strip = mlx5_rxq_obj_modify_wq_vlan_strip,
+	.rxq_obj_new = mlx5_rxq_ibv_obj_new,
+	.rxq_event_get = mlx5_rx_ibv_get_event,
+	.rxq_obj_modify = mlx5_ibv_modify_wq,
+	.rxq_obj_release = mlx5_rxq_ibv_obj_release,
+	.ind_table_new = mlx5_ibv_ind_table_new,
+	.ind_table_destroy = mlx5_ibv_ind_table_destroy,
+	.hrxq_new = mlx5_ibv_hrxq_new,
+	.hrxq_destroy = mlx5_ibv_qp_destroy,
+	.drop_action_create = mlx5_ibv_drop_action_create,
+	.drop_action_destroy = mlx5_ibv_drop_action_destroy,
+	.txq_obj_new = mlx5_txq_ibv_obj_new,
+	.txq_obj_modify = mlx5_ibv_modify_qp,
+	.txq_obj_release = mlx5_txq_ibv_obj_release,
+	.lb_dummy_queue_create = NULL,
+	.lb_dummy_queue_release = NULL,
+};
diff --git a/drivers/net/mlx5/freebsd/mlx5_verbs.h b/drivers/net/mlx5/freebsd/mlx5_verbs.h
new file mode 100644
index 0000000000..f7e8e2fe98
--- /dev/null
+++ b/drivers/net/mlx5/freebsd/mlx5_verbs.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2020 Mellanox Technologies, Ltd
+ */
+
+#ifndef RTE_PMD_MLX5_VERBS_H_
+#define RTE_PMD_MLX5_VERBS_H_
+
+#include "mlx5.h"
+
+int mlx5_txq_ibv_obj_new(struct rte_eth_dev *dev, uint16_t idx);
+void mlx5_txq_ibv_obj_release(struct mlx5_txq_obj *txq_obj);
+int mlx5_rxq_ibv_obj_dummy_lb_create(struct rte_eth_dev *dev);
+void mlx5_rxq_ibv_obj_dummy_lb_release(struct rte_eth_dev *dev);
+
+/* Verbs ops struct */
+extern const struct mlx5_mr_ops mlx5_mr_verbs_ops;
+extern struct mlx5_obj_ops ibv_obj_ops;
+#endif /* RTE_PMD_MLX5_VERBS_H_ */
-- 
2.30.2