net/mlx5: Move QP logic to mlx5_ib

The mlx5_core doesn't need any functionality coded in qp.c, so move
that file to drivers/infiniband/ be under mlx5_ib responsibility.

Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>

1 files changed, 605 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mlx5/qpc.c b/drivers/infiniband/hw/mlx5/qpc.c
new file mode 100644
index 000000000000..ea62735042f0
--- /dev/null
+++ b/drivers/infiniband/hw/mlx5/qpc.c
@@ -0,0 +1,605 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+/*
+ * Copyright (c) 2013-2020, Mellanox Technologies inc. All rights reserved.
+ */
+
+#include <linux/gfp.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/driver.h>
+#include "mlx5_ib.h"
+#include "qp.h"
+
+static int mlx5_core_drain_dct(struct mlx5_ib_dev *dev,
+			       struct mlx5_core_dct *dct);
+
+static struct mlx5_core_rsc_common *
+mlx5_get_rsc(struct mlx5_qp_table *table, u32 rsn)
+{
+	struct mlx5_core_rsc_common *common;
+	unsigned long flags;
+
+	spin_lock_irqsave(&table->lock, flags);
+
+	common = radix_tree_lookup(&table->tree, rsn);
+	if (common)
+		refcount_inc(&common->refcount);
+
+	spin_unlock_irqrestore(&table->lock, flags);
+
+	return common;
+}
+
+void mlx5_core_put_rsc(struct mlx5_core_rsc_common *common)
+{
+	if (refcount_dec_and_test(&common->refcount))
+		complete(&common->free);
+}
+
+static u64 qp_allowed_event_types(void)
+{
+	u64 mask;
+
+	mask = BIT(MLX5_EVENT_TYPE_PATH_MIG) |
+	       BIT(MLX5_EVENT_TYPE_COMM_EST) |
+	       BIT(MLX5_EVENT_TYPE_SQ_DRAINED) |
+	       BIT(MLX5_EVENT_TYPE_SRQ_LAST_WQE) |
+	       BIT(MLX5_EVENT_TYPE_WQ_CATAS_ERROR) |
+	       BIT(MLX5_EVENT_TYPE_PATH_MIG_FAILED) |
+	       BIT(MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR) |
+	       BIT(MLX5_EVENT_TYPE_WQ_ACCESS_ERROR);
+
+	return mask;
+}
+
+static u64 rq_allowed_event_types(void)
+{
+	u64 mask;
+
+	mask = BIT(MLX5_EVENT_TYPE_SRQ_LAST_WQE) |
+	       BIT(MLX5_EVENT_TYPE_WQ_CATAS_ERROR);
+
+	return mask;
+}
+
+static u64 sq_allowed_event_types(void)
+{
+	return BIT(MLX5_EVENT_TYPE_WQ_CATAS_ERROR);
+}
+
+static u64 dct_allowed_event_types(void)
+{
+	return BIT(MLX5_EVENT_TYPE_DCT_DRAINED);
+}
+
+static bool is_event_type_allowed(int rsc_type, int event_type)
+{
+	switch (rsc_type) {
+	case MLX5_EVENT_QUEUE_TYPE_QP:
+		return BIT(event_type) & qp_allowed_event_types();
+	case MLX5_EVENT_QUEUE_TYPE_RQ:
+		return BIT(event_type) & rq_allowed_event_types();
+	case MLX5_EVENT_QUEUE_TYPE_SQ:
+		return BIT(event_type) & sq_allowed_event_types();
+	case MLX5_EVENT_QUEUE_TYPE_DCT:
+		return BIT(event_type) & dct_allowed_event_types();
+	default:
+		WARN(1, "Event arrived for unknown resource type");
+		return false;
+	}
+}
+
+static int rsc_event_notifier(struct notifier_block *nb,
+			      unsigned long type, void *data)
+{
+	struct mlx5_core_rsc_common *common;
+	struct mlx5_qp_table *table;
+	struct mlx5_core_dct *dct;
+	u8 event_type = (u8)type;
+	struct mlx5_core_qp *qp;
+	struct mlx5_eqe *eqe;
+	u32 rsn;
+
+	switch (event_type) {
+	case MLX5_EVENT_TYPE_DCT_DRAINED:
+		eqe = data;
+		rsn = be32_to_cpu(eqe->data.dct.dctn) & 0xffffff;
+		rsn |= (MLX5_RES_DCT << MLX5_USER_INDEX_LEN);
+		break;
+	case MLX5_EVENT_TYPE_PATH_MIG:
+	case MLX5_EVENT_TYPE_COMM_EST:
+	case MLX5_EVENT_TYPE_SQ_DRAINED:
+	case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
+	case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
+	case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
+	case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
+	case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
+		eqe = data;
+		rsn = be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff;
+		rsn |= (eqe->data.qp_srq.type << MLX5_USER_INDEX_LEN);
+		break;
+	default:
+		return NOTIFY_DONE;
+	}
+
+	table = container_of(nb, struct mlx5_qp_table, nb);
+	common = mlx5_get_rsc(table, rsn);
+	if (!common)
+		return NOTIFY_OK;
+
+	if (!is_event_type_allowed((rsn >> MLX5_USER_INDEX_LEN), event_type))
+		goto out;
+
+	switch (common->res) {
+	case MLX5_RES_QP:
+	case MLX5_RES_RQ:
+	case MLX5_RES_SQ:
+		qp = (struct mlx5_core_qp *)common;
+		qp->event(qp, event_type);
+		break;
+	case MLX5_RES_DCT:
+		dct = (struct mlx5_core_dct *)common;
+		if (event_type == MLX5_EVENT_TYPE_DCT_DRAINED)
+			complete(&dct->drained);
+		break;
+	default:
+		break;
+	}
+out:
+	mlx5_core_put_rsc(common);
+
+	return NOTIFY_OK;
+}
+
+static int create_resource_common(struct mlx5_ib_dev *dev,
+				  struct mlx5_core_qp *qp, int rsc_type)
+{
+	struct mlx5_qp_table *table = &dev->qp_table;
+	int err;
+
+	qp->common.res = rsc_type;
+	spin_lock_irq(&table->lock);
+	err = radix_tree_insert(&table->tree,
+				qp->qpn | (rsc_type << MLX5_USER_INDEX_LEN),
+				qp);
+	spin_unlock_irq(&table->lock);
+	if (err)
+		return err;
+
+	refcount_set(&qp->common.refcount, 1);
+	init_completion(&qp->common.free);
+	qp->pid = current->pid;
+
+	return 0;
+}
+
+static void destroy_resource_common(struct mlx5_ib_dev *dev,
+				    struct mlx5_core_qp *qp)
+{
+	struct mlx5_qp_table *table = &dev->qp_table;
+	unsigned long flags;
+
+	spin_lock_irqsave(&table->lock, flags);
+	radix_tree_delete(&table->tree,
+			  qp->qpn | (qp->common.res << MLX5_USER_INDEX_LEN));
+	spin_unlock_irqrestore(&table->lock, flags);
+	mlx5_core_put_rsc((struct mlx5_core_rsc_common *)qp);
+	wait_for_completion(&qp->common.free);
+}
+
+static int _mlx5_core_destroy_dct(struct mlx5_ib_dev *dev,
+				  struct mlx5_core_dct *dct, bool need_cleanup)
+{
+	u32 in[MLX5_ST_SZ_DW(destroy_dct_in)] = {};
+	struct mlx5_core_qp *qp = &dct->mqp;
+	int err;
+
+	err = mlx5_core_drain_dct(dev, dct);
+	if (err) {
+		if (dev->mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR)
+			goto destroy;
+
+		return err;
+	}
+	wait_for_completion(&dct->drained);
+destroy:
+	if (need_cleanup)
+		destroy_resource_common(dev, &dct->mqp);
+	MLX5_SET(destroy_dct_in, in, opcode, MLX5_CMD_OP_DESTROY_DCT);
+	MLX5_SET(destroy_dct_in, in, dctn, qp->qpn);
+	MLX5_SET(destroy_dct_in, in, uid, qp->uid);
+	err = mlx5_cmd_exec_in(dev->mdev, destroy_dct, in);
+	return err;
+}
+
+int mlx5_core_create_dct(struct mlx5_ib_dev *dev, struct mlx5_core_dct *dct,
+			 u32 *in, int inlen, u32 *out, int outlen)
+{
+	struct mlx5_core_qp *qp = &dct->mqp;
+	int err;
+
+	init_completion(&dct->drained);
+	MLX5_SET(create_dct_in, in, opcode, MLX5_CMD_OP_CREATE_DCT);
+
+	err = mlx5_cmd_exec(dev->mdev, in, inlen, out, outlen);
+	if (err)
+		return err;
+
+	qp->qpn = MLX5_GET(create_dct_out, out, dctn);
+	qp->uid = MLX5_GET(create_dct_in, in, uid);
+	err = create_resource_common(dev, qp, MLX5_RES_DCT);
+	if (err)
+		goto err_cmd;
+
+	return 0;
+err_cmd:
+	_mlx5_core_destroy_dct(dev, dct, false);
+	return err;
+}
+
+int mlx5_core_create_qp(struct mlx5_ib_dev *dev, struct mlx5_core_qp *qp,
+			u32 *in, int inlen)
+{
+	u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {};
+	u32 din[MLX5_ST_SZ_DW(destroy_qp_in)] = {};
+	int err;
+
+	MLX5_SET(create_qp_in, in, opcode, MLX5_CMD_OP_CREATE_QP);
+
+	err = mlx5_cmd_exec(dev->mdev, in, inlen, out, sizeof(out));
+	if (err)
+		return err;
+
+	qp->uid = MLX5_GET(create_qp_in, in, uid);
+	qp->qpn = MLX5_GET(create_qp_out, out, qpn);
+
+	err = create_resource_common(dev, qp, MLX5_RES_QP);
+	if (err)
+		goto err_cmd;
+
+	mlx5_debug_qp_add(dev->mdev, qp);
+
+	return 0;
+
+err_cmd:
+	MLX5_SET(destroy_qp_in, din, opcode, MLX5_CMD_OP_DESTROY_QP);
+	MLX5_SET(destroy_qp_in, din, qpn, qp->qpn);
+	MLX5_SET(destroy_qp_in, din, uid, qp->uid);
+	mlx5_cmd_exec_in(dev->mdev, destroy_qp, din);
+	return err;
+}
+
+static int mlx5_core_drain_dct(struct mlx5_ib_dev *dev,
+			       struct mlx5_core_dct *dct)
+{
+	u32 in[MLX5_ST_SZ_DW(drain_dct_in)] = {};
+	struct mlx5_core_qp *qp = &dct->mqp;
+
+	MLX5_SET(drain_dct_in, in, opcode, MLX5_CMD_OP_DRAIN_DCT);
+	MLX5_SET(drain_dct_in, in, dctn, qp->qpn);
+	MLX5_SET(drain_dct_in, in, uid, qp->uid);
+	return mlx5_cmd_exec_in(dev->mdev, drain_dct, in);
+}
+
+int mlx5_core_destroy_dct(struct mlx5_ib_dev *dev,
+			  struct mlx5_core_dct *dct)
+{
+	return _mlx5_core_destroy_dct(dev, dct, true);
+}
+
+int mlx5_core_destroy_qp(struct mlx5_ib_dev *dev, struct mlx5_core_qp *qp)
+{
+	u32 in[MLX5_ST_SZ_DW(destroy_qp_in)] = {};
+
+	mlx5_debug_qp_remove(dev->mdev, qp);
+
+	destroy_resource_common(dev, qp);
+
+	MLX5_SET(destroy_qp_in, in, opcode, MLX5_CMD_OP_DESTROY_QP);
+	MLX5_SET(destroy_qp_in, in, qpn, qp->qpn);
+	MLX5_SET(destroy_qp_in, in, uid, qp->uid);
+	mlx5_cmd_exec_in(dev->mdev, destroy_qp, in);
+	return 0;
+}
+
+int mlx5_core_set_delay_drop(struct mlx5_ib_dev *dev,
+			     u32 timeout_usec)
+{
+	u32 in[MLX5_ST_SZ_DW(set_delay_drop_params_in)] = {};
+
+	MLX5_SET(set_delay_drop_params_in, in, opcode,
+		 MLX5_CMD_OP_SET_DELAY_DROP_PARAMS);
+	MLX5_SET(set_delay_drop_params_in, in, delay_drop_timeout,
+		 timeout_usec / 100);
+	return mlx5_cmd_exec_in(dev->mdev, set_delay_drop_params, in);
+}
+
+struct mbox_info {
+	u32 *in;
+	u32 *out;
+	int inlen;
+	int outlen;
+};
+
+static int mbox_alloc(struct mbox_info *mbox, int inlen, int outlen)
+{
+	mbox->inlen  = inlen;
+	mbox->outlen = outlen;
+	mbox->in = kzalloc(mbox->inlen, GFP_KERNEL);
+	mbox->out = kzalloc(mbox->outlen, GFP_KERNEL);
+	if (!mbox->in || !mbox->out) {
+		kfree(mbox->in);
+		kfree(mbox->out);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void mbox_free(struct mbox_info *mbox)
+{
+	kfree(mbox->in);
+	kfree(mbox->out);
+}
+
+static int modify_qp_mbox_alloc(struct mlx5_core_dev *dev, u16 opcode, int qpn,
+				u32 opt_param_mask, void *qpc,
+				struct mbox_info *mbox, u16 uid)
+{
+	mbox->out = NULL;
+	mbox->in = NULL;
+
+#define MBOX_ALLOC(mbox, typ)  \
+	mbox_alloc(mbox, MLX5_ST_SZ_BYTES(typ##_in), MLX5_ST_SZ_BYTES(typ##_out))
+
+#define MOD_QP_IN_SET(typ, in, _opcode, _qpn, _uid)                            \
+	do {                                                                   \
+		MLX5_SET(typ##_in, in, opcode, _opcode);                       \
+		MLX5_SET(typ##_in, in, qpn, _qpn);                             \
+		MLX5_SET(typ##_in, in, uid, _uid);                             \
+	} while (0)
+
+#define MOD_QP_IN_SET_QPC(typ, in, _opcode, _qpn, _opt_p, _qpc, _uid)          \
+	do {                                                                   \
+		MOD_QP_IN_SET(typ, in, _opcode, _qpn, _uid);                   \
+		MLX5_SET(typ##_in, in, opt_param_mask, _opt_p);                \
+		memcpy(MLX5_ADDR_OF(typ##_in, in, qpc), _qpc,                  \
+		       MLX5_ST_SZ_BYTES(qpc));                                 \
+	} while (0)
+
+	switch (opcode) {
+	/* 2RST & 2ERR */
+	case MLX5_CMD_OP_2RST_QP:
+		if (MBOX_ALLOC(mbox, qp_2rst))
+			return -ENOMEM;
+		MOD_QP_IN_SET(qp_2rst, mbox->in, opcode, qpn, uid);
+		break;
+	case MLX5_CMD_OP_2ERR_QP:
+		if (MBOX_ALLOC(mbox, qp_2err))
+			return -ENOMEM;
+		MOD_QP_IN_SET(qp_2err, mbox->in, opcode, qpn, uid);
+		break;
+
+	/* MODIFY with QPC */
+	case MLX5_CMD_OP_RST2INIT_QP:
+		if (MBOX_ALLOC(mbox, rst2init_qp))
+			return -ENOMEM;
+		MOD_QP_IN_SET_QPC(rst2init_qp, mbox->in, opcode, qpn,
+				  opt_param_mask, qpc, uid);
+		break;
+	case MLX5_CMD_OP_INIT2RTR_QP:
+		if (MBOX_ALLOC(mbox, init2rtr_qp))
+			return -ENOMEM;
+		MOD_QP_IN_SET_QPC(init2rtr_qp, mbox->in, opcode, qpn,
+				  opt_param_mask, qpc, uid);
+		break;
+	case MLX5_CMD_OP_RTR2RTS_QP:
+		if (MBOX_ALLOC(mbox, rtr2rts_qp))
+			return -ENOMEM;
+		MOD_QP_IN_SET_QPC(rtr2rts_qp, mbox->in, opcode, qpn,
+				  opt_param_mask, qpc, uid);
+		break;
+	case MLX5_CMD_OP_RTS2RTS_QP:
+		if (MBOX_ALLOC(mbox, rts2rts_qp))
+			return -ENOMEM;
+		MOD_QP_IN_SET_QPC(rts2rts_qp, mbox->in, opcode, qpn,
+				  opt_param_mask, qpc, uid);
+		break;
+	case MLX5_CMD_OP_SQERR2RTS_QP:
+		if (MBOX_ALLOC(mbox, sqerr2rts_qp))
+			return -ENOMEM;
+		MOD_QP_IN_SET_QPC(sqerr2rts_qp, mbox->in, opcode, qpn,
+				  opt_param_mask, qpc, uid);
+		break;
+	case MLX5_CMD_OP_INIT2INIT_QP:
+		if (MBOX_ALLOC(mbox, init2init_qp))
+			return -ENOMEM;
+		MOD_QP_IN_SET_QPC(init2init_qp, mbox->in, opcode, qpn,
+				  opt_param_mask, qpc, uid);
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+int mlx5_core_qp_modify(struct mlx5_ib_dev *dev, u16 opcode, u32 opt_param_mask,
+			void *qpc, struct mlx5_core_qp *qp)
+{
+	struct mbox_info mbox;
+	int err;
+
+	err = modify_qp_mbox_alloc(dev->mdev, opcode, qp->qpn,
+				   opt_param_mask, qpc, &mbox, qp->uid);
+	if (err)
+		return err;
+
+	err = mlx5_cmd_exec(dev->mdev, mbox.in, mbox.inlen, mbox.out,
+			    mbox.outlen);
+	mbox_free(&mbox);
+	return err;
+}
+
+int mlx5_init_qp_table(struct mlx5_ib_dev *dev)
+{
+	struct mlx5_qp_table *table = &dev->qp_table;
+
+	spin_lock_init(&table->lock);
+	INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
+	mlx5_qp_debugfs_init(dev->mdev);
+
+	table->nb.notifier_call = rsc_event_notifier;
+	mlx5_notifier_register(dev->mdev, &table->nb);
+
+	return 0;
+}
+
+void mlx5_cleanup_qp_table(struct mlx5_ib_dev *dev)
+{
+	struct mlx5_qp_table *table = &dev->qp_table;
+
+	mlx5_notifier_unregister(dev->mdev, &table->nb);
+	mlx5_qp_debugfs_cleanup(dev->mdev);
+}
+
+int mlx5_core_qp_query(struct mlx5_ib_dev *dev, struct mlx5_core_qp *qp,
+		       u32 *out, int outlen)
+{
+	u32 in[MLX5_ST_SZ_DW(query_qp_in)] = {};
+
+	MLX5_SET(query_qp_in, in, opcode, MLX5_CMD_OP_QUERY_QP);
+	MLX5_SET(query_qp_in, in, qpn, qp->qpn);
+	return mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, outlen);
+}
+
+int mlx5_core_dct_query(struct mlx5_ib_dev *dev, struct mlx5_core_dct *dct,
+			u32 *out, int outlen)
+{
+	u32 in[MLX5_ST_SZ_DW(query_dct_in)] = {};
+	struct mlx5_core_qp *qp = &dct->mqp;
+
+	MLX5_SET(query_dct_in, in, opcode, MLX5_CMD_OP_QUERY_DCT);
+	MLX5_SET(query_dct_in, in, dctn, qp->qpn);
+
+	return mlx5_cmd_exec(dev->mdev, (void *)&in, sizeof(in), (void *)out,
+			     outlen);
+}
+
+int mlx5_core_xrcd_alloc(struct mlx5_ib_dev *dev, u32 *xrcdn)
+{
+	u32 out[MLX5_ST_SZ_DW(alloc_xrcd_out)] = {};
+	u32 in[MLX5_ST_SZ_DW(alloc_xrcd_in)] = {};
+	int err;
+
+	MLX5_SET(alloc_xrcd_in, in, opcode, MLX5_CMD_OP_ALLOC_XRCD);
+	err = mlx5_cmd_exec_inout(dev->mdev, alloc_xrcd, in, out);
+	if (!err)
+		*xrcdn = MLX5_GET(alloc_xrcd_out, out, xrcd);
+	return err;
+}
+
+int mlx5_core_xrcd_dealloc(struct mlx5_ib_dev *dev, u32 xrcdn)
+{
+	u32 in[MLX5_ST_SZ_DW(dealloc_xrcd_in)] = {};
+
+	MLX5_SET(dealloc_xrcd_in, in, opcode, MLX5_CMD_OP_DEALLOC_XRCD);
+	MLX5_SET(dealloc_xrcd_in, in, xrcd, xrcdn);
+	return mlx5_cmd_exec_in(dev->mdev, dealloc_xrcd, in);
+}
+
+static void destroy_rq_tracked(struct mlx5_ib_dev *dev, u32 rqn, u16 uid)
+{
+	u32 in[MLX5_ST_SZ_DW(destroy_rq_in)] = {};
+
+	MLX5_SET(destroy_rq_in, in, opcode, MLX5_CMD_OP_DESTROY_RQ);
+	MLX5_SET(destroy_rq_in, in, rqn, rqn);
+	MLX5_SET(destroy_rq_in, in, uid, uid);
+	mlx5_cmd_exec_in(dev->mdev, destroy_rq, in);
+}
+
+int mlx5_core_create_rq_tracked(struct mlx5_ib_dev *dev, u32 *in, int inlen,
+				struct mlx5_core_qp *rq)
+{
+	int err;
+	u32 rqn;
+
+	err = mlx5_core_create_rq(dev->mdev, in, inlen, &rqn);
+	if (err)
+		return err;
+
+	rq->uid = MLX5_GET(create_rq_in, in, uid);
+	rq->qpn = rqn;
+	err = create_resource_common(dev, rq, MLX5_RES_RQ);
+	if (err)
+		goto err_destroy_rq;
+
+	return 0;
+
+err_destroy_rq:
+	destroy_rq_tracked(dev, rq->qpn, rq->uid);
+
+	return err;
+}
+
+void mlx5_core_destroy_rq_tracked(struct mlx5_ib_dev *dev,
+				  struct mlx5_core_qp *rq)
+{
+	destroy_resource_common(dev, rq);
+	destroy_rq_tracked(dev, rq->qpn, rq->uid);
+}
+
+static void destroy_sq_tracked(struct mlx5_ib_dev *dev, u32 sqn, u16 uid)
+{
+	u32 in[MLX5_ST_SZ_DW(destroy_sq_in)] = {};
+
+	MLX5_SET(destroy_sq_in, in, opcode, MLX5_CMD_OP_DESTROY_SQ);
+	MLX5_SET(destroy_sq_in, in, sqn, sqn);
+	MLX5_SET(destroy_sq_in, in, uid, uid);
+	mlx5_cmd_exec_in(dev->mdev, destroy_sq, in);
+}
+
+int mlx5_core_create_sq_tracked(struct mlx5_ib_dev *dev, u32 *in, int inlen,
+				struct mlx5_core_qp *sq)
+{
+	u32 out[MLX5_ST_SZ_DW(create_sq_out)] = {};
+	int err;
+
+	MLX5_SET(create_sq_in, in, opcode, MLX5_CMD_OP_CREATE_SQ);
+	err = mlx5_cmd_exec(dev->mdev, in, inlen, out, sizeof(out));
+	if (err)
+		return err;
+
+	sq->qpn = MLX5_GET(create_sq_out, out, sqn);
+	sq->uid = MLX5_GET(create_sq_in, in, uid);
+	err = create_resource_common(dev, sq, MLX5_RES_SQ);
+	if (err)
+		goto err_destroy_sq;
+
+	return 0;
+
+err_destroy_sq:
+	destroy_sq_tracked(dev, sq->qpn, sq->uid);
+
+	return err;
+}
+
+void mlx5_core_destroy_sq_tracked(struct mlx5_ib_dev *dev,
+				  struct mlx5_core_qp *sq)
+{
+	destroy_resource_common(dev, sq);
+	destroy_sq_tracked(dev, sq->qpn, sq->uid);
+}
+
+struct mlx5_core_rsc_common *mlx5_core_res_hold(struct mlx5_ib_dev *dev,
+						int res_num,
+						enum mlx5_res_type res_type)
+{
+	u32 rsn = res_num | (res_type << MLX5_USER_INDEX_LEN);
+	struct mlx5_qp_table *table = &dev->qp_table;
+
+	return mlx5_get_rsc(table, rsn);
+}
+
+void mlx5_core_res_put(struct mlx5_core_rsc_common *res)
+{
+	mlx5_core_put_rsc(res);
+}