1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */
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 #include <linux/socket.h>
39 #include <linux/in.h>
40 #include <linux/in6.h>
41 
42 union rxe_gid {
43 	__u8	raw[16];
44 	struct {
45 		__be64	subnet_prefix;
46 		__be64	interface_id;
47 	} global;
48 };
49 
50 struct rxe_global_route {
51 	union rxe_gid	dgid;
52 	__u32		flow_label;
53 	__u8		sgid_index;
54 	__u8		hop_limit;
55 	__u8		traffic_class;
56 };
57 
58 struct rxe_av {
59 	__u8			port_num;
60 	__u8			network_type;
61 	__u16			reserved1;
62 	__u32			reserved2;
63 	struct rxe_global_route	grh;
64 	union {
65 		struct sockaddr_in	_sockaddr_in;
66 		struct sockaddr_in6	_sockaddr_in6;
67 	} sgid_addr, dgid_addr;
68 };
69 
70 struct rxe_send_wr {
71 	__aligned_u64		wr_id;
72 	__u32			num_sge;
73 	__u32			opcode;
74 	__u32			send_flags;
75 	union {
76 		__be32		imm_data;
77 		__u32		invalidate_rkey;
78 	} ex;
79 	union {
80 		struct {
81 			__aligned_u64 remote_addr;
82 			__u32	rkey;
83 			__u32	reserved;
84 		} rdma;
85 		struct {
86 			__aligned_u64 remote_addr;
87 			__aligned_u64 compare_add;
88 			__aligned_u64 swap;
89 			__u32	rkey;
90 			__u32	reserved;
91 		} atomic;
92 		struct {
93 			__u32	remote_qpn;
94 			__u32	remote_qkey;
95 			__u16	pkey_index;
96 		} ud;
97 		/* reg is only used by the kernel and is not part of the uapi */
98 		struct {
99 			union {
100 				struct ib_mr *mr;
101 				__aligned_u64 reserved;
102 			};
103 			__u32        key;
104 			__u32        access;
105 		} reg;
106 	} wr;
107 };
108 
109 struct rxe_sge {
110 	__aligned_u64 addr;
111 	__u32	length;
112 	__u32	lkey;
113 };
114 
115 struct mminfo {
116 	__aligned_u64  		offset;
117 	__u32			size;
118 	__u32			pad;
119 };
120 
121 struct rxe_dma_info {
122 	__u32			length;
123 	__u32			resid;
124 	__u32			cur_sge;
125 	__u32			num_sge;
126 	__u32			sge_offset;
127 	__u32			reserved;
128 	union {
129 		__u8		inline_data[0];
130 		struct rxe_sge	sge[0];
131 	};
132 };
133 
134 struct rxe_send_wqe {
135 	struct rxe_send_wr	wr;
136 	struct rxe_av		av;
137 	__u32			status;
138 	__u32			state;
139 	__aligned_u64		iova;
140 	__u32			mask;
141 	__u32			first_psn;
142 	__u32			last_psn;
143 	__u32			ack_length;
144 	__u32			ssn;
145 	__u32			has_rd_atomic;
146 	struct rxe_dma_info	dma;
147 };
148 
149 struct rxe_recv_wqe {
150 	__aligned_u64		wr_id;
151 	__u32			num_sge;
152 	__u32			padding;
153 	struct rxe_dma_info	dma;
154 };
155 
156 struct rxe_create_cq_resp {
157 	struct mminfo mi;
158 };
159 
160 struct rxe_resize_cq_resp {
161 	struct mminfo mi;
162 };
163 
164 struct rxe_create_qp_resp {
165 	struct mminfo rq_mi;
166 	struct mminfo sq_mi;
167 };
168 
169 struct rxe_create_srq_resp {
170 	struct mminfo mi;
171 	__u32 srq_num;
172 	__u32 reserved;
173 };
174 
175 struct rxe_modify_srq_cmd {
176 	__aligned_u64 mmap_info_addr;
177 };
178 
179 #endif /* RDMA_USER_RXE_H */
180