qedr: Convert qpidr to XArray

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/qedr/main.c

@@ -364,8 +364,7 @@ static int qedr_alloc_resources(struct qedr_dev *dev)
 	spin_lock_init(&dev->sgid_lock);
 
 	if (IS_IWARP(dev)) {
-		spin_lock_init(&dev->qpidr.idr_lock);
-		idr_init(&dev->qpidr.idr);
+		xa_init_flags(&dev->qps, XA_FLAGS_LOCK_IRQ);
 		dev->iwarp_wq = create_singlethread_workqueue("qedr_iwarpq");
 	}
 

drivers/infiniband/hw/qedr/qedr.h

@@ -171,7 +171,7 @@ struct qedr_dev {
 	struct qedr_cq		*gsi_rqcq;
 	struct qedr_qp		*gsi_qp;
 	enum qed_rdma_type	rdma_type;
-	struct qedr_idr		qpidr;
+	struct xarray		qps;
 	struct qedr_idr		srqidr;
 	struct workqueue_struct *iwarp_wq;
 	u16			iwarp_max_mtu;

drivers/infiniband/hw/qedr/qedr_iw_cm.c

@@ -491,7 +491,7 @@ int qedr_iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 	int rc = 0;
 	int i;
 
-	qp = idr_find(&dev->qpidr.idr, conn_param->qpn);
+	qp = xa_load(&dev->qps, conn_param->qpn);
 	if (unlikely(!qp))
 		return -EINVAL;
 
@@ -681,7 +681,7 @@ int qedr_iw_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 
 	DP_DEBUG(dev, QEDR_MSG_IWARP, "Accept on qpid=%d\n", conn_param->qpn);
 
-	qp = idr_find(&dev->qpidr.idr, conn_param->qpn);
+	qp = xa_load(&dev->qps, conn_param->qpn);
 	if (!qp) {
 		DP_ERR(dev, "Invalid QP number %d\n", conn_param->qpn);
 		return -EINVAL;
@@ -739,9 +739,7 @@ void qedr_iw_qp_rem_ref(struct ib_qp *ibqp)
 	struct qedr_qp *qp = get_qedr_qp(ibqp);
 
 	if (atomic_dec_and_test(&qp->refcnt)) {
-		spin_lock_irq(&qp->dev->qpidr.idr_lock);
-		idr_remove(&qp->dev->qpidr.idr, qp->qp_id);
-		spin_unlock_irq(&qp->dev->qpidr.idr_lock);
+		xa_erase_irq(&qp->dev->qps, qp->qp_id);
 		kfree(qp);
 	}
 }
@@ -750,5 +748,5 @@ struct ib_qp *qedr_iw_get_qp(struct ib_device *ibdev, int qpn)
 {
 	struct qedr_dev *dev = get_qedr_dev(ibdev);
 
-	return idr_find(&dev->qpidr.idr, qpn);
+	return xa_load(&dev->qps, qpn);
 }

drivers/infiniband/hw/qedr/verbs.c

@@ -1988,7 +1988,7 @@ struct ib_qp *qedr_create_qp(struct ib_pd *ibpd,
 	qp->ibqp.qp_num = qp->qp_id;
 
 	if (rdma_protocol_iwarp(&dev->ibdev, 1)) {
-		rc = qedr_idr_add(dev, &dev->qpidr, qp, qp->qp_id);
+		rc = xa_insert_irq(&dev->qps, qp->qp_id, qp, GFP_KERNEL);
 		if (rc)
 			goto err;
 	}
@@ -2564,7 +2564,7 @@ int qedr_destroy_qp(struct ib_qp *ibqp)
 
 	if (atomic_dec_and_test(&qp->refcnt) &&
 	    rdma_protocol_iwarp(&dev->ibdev, 1)) {
-		qedr_idr_remove(dev, &dev->qpidr, qp->qp_id);
+		xa_erase_irq(&dev->qps, qp->qp_id);
 		kfree(qp);
 	}
 	return rc;