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 22 static 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 37 static 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 */ 54 enum cm_msg_response { 55 CM_MSG_RESPONSE_REQ = 0x0, 56 CM_MSG_RESPONSE_REP = 0x1, 57 CM_MSG_RESPONSE_OTHER = 0x2 58 }; 59 60 static 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 */ 69