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/* 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 */
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