1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
2 /*
3  * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
4  *
5  * This software is available to you under a choice of one of two
6  * licenses.  You may choose to be licensed under the terms of the GNU
7  * General Public License (GPL) Version 2, available from the file
8  * COPYING in the main directory of this source tree, or the
9  * OpenIB.org BSD license below:
10  *
11  *     Redistribution and use in source and binary forms, with or
12  *     without modification, are permitted provided that the following
13  *     conditions are met:
14  *
15  *	- Redistributions of source code must retain the above
16  *	  copyright notice, this list of conditions and the following
17  *	  disclaimer.
18  *
19  *	- Redistributions in binary form must reproduce the above
20  *	  copyright notice, this list of conditions and the following
21  *	  disclaimer in the documentation and/or other materials
22  *	  provided with the distribution.
23  *
24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31  * SOFTWARE.
32  */
33 
34 #ifndef RDMA_USER_RXE_H
35 #define RDMA_USER_RXE_H
36 
37 #include <linux/types.h>
38 
39 union rxe_gid {
40 	__u8	raw[16];
41 	struct {
42 		__be64	subnet_prefix;
43 		__be64	interface_id;
44 	} global;
45 };
46 
47 struct rxe_global_route {
48 	union rxe_gid	dgid;
49 	__u32		flow_label;
50 	__u8		sgid_index;
51 	__u8		hop_limit;
52 	__u8		traffic_class;
53 };
54 
55 struct rxe_av {
56 	__u8			port_num;
57 	__u8			network_type;
58 	struct rxe_global_route	grh;
59 	union {
60 		struct sockaddr		_sockaddr;
61 		struct sockaddr_in	_sockaddr_in;
62 		struct sockaddr_in6	_sockaddr_in6;
63 	} sgid_addr, dgid_addr;
64 };
65 
66 struct rxe_send_wr {
67 	__u64			wr_id;
68 	__u32			num_sge;
69 	__u32			opcode;
70 	__u32			send_flags;
71 	union {
72 		__be32		imm_data;
73 		__u32		invalidate_rkey;
74 	} ex;
75 	union {
76 		struct {
77 			__u64	remote_addr;
78 			__u32	rkey;
79 		} rdma;
80 		struct {
81 			__u64	remote_addr;
82 			__u64	compare_add;
83 			__u64	swap;
84 			__u32	rkey;
85 		} atomic;
86 		struct {
87 			__u32	remote_qpn;
88 			__u32	remote_qkey;
89 			__u16	pkey_index;
90 		} ud;
91 		struct {
92 			struct ib_mr *mr;
93 			__u32        key;
94 			int          access;
95 		} reg;
96 	} wr;
97 };
98 
99 struct rxe_sge {
100 	__u64	addr;
101 	__u32	length;
102 	__u32	lkey;
103 };
104 
105 struct mminfo {
106 	__u64			offset;
107 	__u32			size;
108 	__u32			pad;
109 };
110 
111 struct rxe_dma_info {
112 	__u32			length;
113 	__u32			resid;
114 	__u32			cur_sge;
115 	__u32			num_sge;
116 	__u32			sge_offset;
117 	union {
118 		__u8		inline_data[0];
119 		struct rxe_sge	sge[0];
120 	};
121 };
122 
123 struct rxe_send_wqe {
124 	struct rxe_send_wr	wr;
125 	struct rxe_av		av;
126 	__u32			status;
127 	__u32			state;
128 	__u64			iova;
129 	__u32			mask;
130 	__u32			first_psn;
131 	__u32			last_psn;
132 	__u32			ack_length;
133 	__u32			ssn;
134 	__u32			has_rd_atomic;
135 	struct rxe_dma_info	dma;
136 };
137 
138 struct rxe_recv_wqe {
139 	__u64			wr_id;
140 	__u32			num_sge;
141 	__u32			padding;
142 	struct rxe_dma_info	dma;
143 };
144 
145 #endif /* RDMA_USER_RXE_H */
146