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 	__u8			dmac[6];
62 	struct rxe_global_route	grh;
63 	union {
64 		struct sockaddr_in	_sockaddr_in;
65 		struct sockaddr_in6	_sockaddr_in6;
66 	} sgid_addr, dgid_addr;
67 };
68 
69 struct rxe_send_wr {
70 	__aligned_u64		wr_id;
71 	__u32			num_sge;
72 	__u32			opcode;
73 	__u32			send_flags;
74 	union {
75 		__be32		imm_data;
76 		__u32		invalidate_rkey;
77 	} ex;
78 	union {
79 		struct {
80 			__aligned_u64 remote_addr;
81 			__u32	rkey;
82 			__u32	reserved;
83 		} rdma;
84 		struct {
85 			__aligned_u64 remote_addr;
86 			__aligned_u64 compare_add;
87 			__aligned_u64 swap;
88 			__u32	rkey;
89 			__u32	reserved;
90 		} atomic;
91 		struct {
92 			__u32	remote_qpn;
93 			__u32	remote_qkey;
94 			__u16	pkey_index;
95 		} ud;
96 		/* reg is only used by the kernel and is not part of the uapi */
97 		struct {
98 			union {
99 				struct ib_mr *mr;
100 				__aligned_u64 reserved;
101 			};
102 			__u32        key;
103 			__u32        access;
104 		} reg;
105 	} wr;
106 };
107 
108 struct rxe_sge {
109 	__aligned_u64 addr;
110 	__u32	length;
111 	__u32	lkey;
112 };
113 
114 struct mminfo {
115 	__aligned_u64  		offset;
116 	__u32			size;
117 	__u32			pad;
118 };
119 
120 struct rxe_dma_info {
121 	__u32			length;
122 	__u32			resid;
123 	__u32			cur_sge;
124 	__u32			num_sge;
125 	__u32			sge_offset;
126 	__u32			reserved;
127 	union {
128 		__u8		inline_data[0];
129 		struct rxe_sge	sge[0];
130 	};
131 };
132 
133 struct rxe_send_wqe {
134 	struct rxe_send_wr	wr;
135 	struct rxe_av		av;
136 	__u32			status;
137 	__u32			state;
138 	__aligned_u64		iova;
139 	__u32			mask;
140 	__u32			first_psn;
141 	__u32			last_psn;
142 	__u32			ack_length;
143 	__u32			ssn;
144 	__u32			has_rd_atomic;
145 	struct rxe_dma_info	dma;
146 };
147 
148 struct rxe_recv_wqe {
149 	__aligned_u64		wr_id;
150 	__u32			num_sge;
151 	__u32			padding;
152 	struct rxe_dma_info	dma;
153 };
154 
155 struct rxe_create_cq_resp {
156 	struct mminfo mi;
157 };
158 
159 struct rxe_resize_cq_resp {
160 	struct mminfo mi;
161 };
162 
163 struct rxe_create_qp_resp {
164 	struct mminfo rq_mi;
165 	struct mminfo sq_mi;
166 };
167 
168 struct rxe_create_srq_resp {
169 	struct mminfo mi;
170 	__u32 srq_num;
171 	__u32 reserved;
172 };
173 
174 struct rxe_modify_srq_cmd {
175 	__aligned_u64 mmap_info_addr;
176 };
177 
178 #endif /* RDMA_USER_RXE_H */
179