1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/infiniband/core/cm_msgs.h b/drivers/infiniband/core/cm_msgs.h
new file mode 100644
index 000000000..0cc40656b
--- /dev/null
+++ b/drivers/infiniband/core/cm_msgs.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/*
+ * Copyright (c) 2004, 2011 Intel Corporation.  All rights reserved.
+ * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
+ * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
+ * Copyright (c) 2019, Mellanox Technologies inc.  All rights reserved.
+ */
+#ifndef CM_MSGS_H
+#define CM_MSGS_H
+
+#include <rdma/ibta_vol1_c12.h>
+#include <rdma/ib_mad.h>
+#include <rdma/ib_cm.h>
+
+/*
+ * Parameters to routines below should be in network-byte order, and values
+ * are returned in network-byte order.
+ */
+
+#define IB_CM_CLASS_VERSION	2 /* IB specification 1.2 */
+
+static inline enum ib_qp_type cm_req_get_qp_type(struct cm_req_msg *req_msg)
+{
+	u8 transport_type = IBA_GET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg);
+	switch(transport_type) {
+	case 0: return IB_QPT_RC;
+	case 1: return IB_QPT_UC;
+	case 3:
+		switch (IBA_GET(CM_REQ_EXTENDED_TRANSPORT_TYPE, req_msg)) {
+		case 1: return IB_QPT_XRC_TGT;
+		default: return 0;
+		}
+	default: return 0;
+	}
+}
+
+static inline void cm_req_set_qp_type(struct cm_req_msg *req_msg,
+				      enum ib_qp_type qp_type)
+{
+	switch(qp_type) {
+	case IB_QPT_UC:
+		IBA_SET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg, 1);
+		break;
+	case IB_QPT_XRC_INI:
+		IBA_SET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg, 3);
+		IBA_SET(CM_REQ_EXTENDED_TRANSPORT_TYPE, req_msg, 1);
+		break;
+	default:
+		IBA_SET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg, 0);
+	}
+}
+
+/* Message REJected or MRAed */
+enum cm_msg_response {
+	CM_MSG_RESPONSE_REQ = 0x0,
+	CM_MSG_RESPONSE_REP = 0x1,
+	CM_MSG_RESPONSE_OTHER = 0x2
+};
+
+static inline __be32 cm_rep_get_qpn(struct cm_rep_msg *rep_msg, enum ib_qp_type qp_type)
+{
+	return (qp_type == IB_QPT_XRC_INI) ?
+		       cpu_to_be32(IBA_GET(CM_REP_LOCAL_EE_CONTEXT_NUMBER,
+					   rep_msg)) :
+		       cpu_to_be32(IBA_GET(CM_REP_LOCAL_QPN, rep_msg));
+}
+
+#endif /* CM_MSGS_H */