1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/tid_rdma.c b/drivers/infiniband/hw/hfi1/tid_rdma.c
new file mode 100644
index 000000000000..da1ecb68a928
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/tid_rdma.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+/*
+ * Copyright(c) 2018 Intel Corporation.
+ *
+ */
+
+#include "hfi.h"
+#include "verbs.h"
+#include "tid_rdma.h"
+
+/**
+ * qp_to_rcd - determine the receive context used by a qp
+ * @qp - the qp
+ *
+ * This routine returns the receive context associated
+ * with a a qp's qpn.
+ *
+ * Returns the context.
+ */
+static struct hfi1_ctxtdata *qp_to_rcd(struct rvt_dev_info *rdi,
+				       struct rvt_qp *qp)
+{
+	struct hfi1_ibdev *verbs_dev = container_of(rdi,
+						    struct hfi1_ibdev,
+						    rdi);
+	struct hfi1_devdata *dd = container_of(verbs_dev,
+					       struct hfi1_devdata,
+					       verbs_dev);
+	unsigned int ctxt;
+
+	if (qp->ibqp.qp_num == 0)
+		ctxt = 0;
+	else
+		ctxt = ((qp->ibqp.qp_num >> dd->qos_shift) %
+			(dd->n_krcv_queues - 1)) + 1;
+
+	return dd->rcd[ctxt];
+}
+
+int hfi1_qp_priv_init(struct rvt_dev_info *rdi, struct rvt_qp *qp,
+		      struct ib_qp_init_attr *init_attr)
+{
+	struct hfi1_qp_priv *qpriv = qp->priv;
+
+	qpriv->rcd = qp_to_rcd(rdi, qp);
+
+	return 0;
+}