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 | |