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
cm_req_get_qp_type(struct cm_req_msg * req_msg)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
cm_req_set_qp_type(struct cm_req_msg * req_msg,enum ib_qp_type qp_type)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
cm_rep_get_qpn(struct cm_rep_msg * rep_msg,enum ib_qp_type qp_type)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
