cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cm_msgs.h (1870B)

      1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
      2/*
      3 * Copyright (c) 2004, 2011 Intel Corporation.  All rights reserved.
      4 * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
      5 * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
      6 * Copyright (c) 2019, Mellanox Technologies inc.  All rights reserved.
      7 */
      8#ifndef CM_MSGS_H
      9#define CM_MSGS_H
     10
     11#include <rdma/ibta_vol1_c12.h>
     12#include <rdma/ib_mad.h>
     13#include <rdma/ib_cm.h>
     14
     15/*
     16 * Parameters to routines below should be in network-byte order, and values
     17 * are returned in network-byte order.
     18 */
     19
     20#define IB_CM_CLASS_VERSION	2 /* IB specification 1.2 */
     21
     22static inline enum ib_qp_type cm_req_get_qp_type(struct cm_req_msg *req_msg)
     23{
     24	u8 transport_type = IBA_GET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg);
     25	switch (transport_type) {
     26	case 0: return IB_QPT_RC;
     27	case 1: return IB_QPT_UC;
     28	case 3:
     29		switch (IBA_GET(CM_REQ_EXTENDED_TRANSPORT_TYPE, req_msg)) {
     30		case 1: return IB_QPT_XRC_TGT;
     31		default: return 0;
     32		}
     33	default: return 0;
     34	}
     35}
     36
     37static inline void cm_req_set_qp_type(struct cm_req_msg *req_msg,
     38				      enum ib_qp_type qp_type)
     39{
     40	switch (qp_type) {
     41	case IB_QPT_UC:
     42		IBA_SET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg, 1);
     43		break;
     44	case IB_QPT_XRC_INI:
     45		IBA_SET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg, 3);
     46		IBA_SET(CM_REQ_EXTENDED_TRANSPORT_TYPE, req_msg, 1);
     47		break;
     48	default:
     49		IBA_SET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg, 0);
     50	}
     51}
     52
     53/* Message REJected or MRAed */
     54enum cm_msg_response {
     55	CM_MSG_RESPONSE_REQ = 0x0,
     56	CM_MSG_RESPONSE_REP = 0x1,
     57	CM_MSG_RESPONSE_OTHER = 0x2
     58};
     59
     60static inline __be32 cm_rep_get_qpn(struct cm_rep_msg *rep_msg, enum ib_qp_type qp_type)
     61{
     62	return (qp_type == IB_QPT_XRC_INI) ?
     63		       cpu_to_be32(IBA_GET(CM_REP_LOCAL_EE_CONTEXT_NUMBER,
     64					   rep_msg)) :
     65		       cpu_to_be32(IBA_GET(CM_REP_LOCAL_QPN, rep_msg));
     66}
     67
     68#endif /* CM_MSGS_H */