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 | enum { |
43 | RXE_NETWORK_TYPE_IPV4 = 1, |
44 | RXE_NETWORK_TYPE_IPV6 = 2, |
45 | }; |
46 | |
47 | union rxe_gid { |
48 | __u8 raw[16]; |
49 | struct { |
50 | __be64 subnet_prefix; |
51 | __be64 interface_id; |
52 | } global; |
53 | }; |
54 | |
55 | struct rxe_global_route { |
56 | union rxe_gid dgid; |
57 | __u32 flow_label; |
58 | __u8 sgid_index; |
59 | __u8 hop_limit; |
60 | __u8 traffic_class; |
61 | }; |
62 | |
63 | struct rxe_av { |
64 | __u8 port_num; |
65 | /* From RXE_NETWORK_TYPE_* */ |
66 | __u8 network_type; |
67 | __u8 dmac[6]; |
68 | struct rxe_global_route grh; |
69 | union { |
70 | struct sockaddr_in _sockaddr_in; |
71 | struct sockaddr_in6 _sockaddr_in6; |
72 | } sgid_addr, dgid_addr; |
73 | }; |
74 | |
75 | struct rxe_send_wr { |
76 | __aligned_u64 wr_id; |
77 | __u32 reserved; |
78 | __u32 opcode; |
79 | __u32 send_flags; |
80 | union { |
81 | __be32 imm_data; |
82 | __u32 invalidate_rkey; |
83 | } ex; |
84 | union { |
85 | struct { |
86 | __aligned_u64 remote_addr; |
87 | __u32 length; |
88 | __u32 rkey; |
89 | __u8 type; |
90 | __u8 level; |
91 | } flush; |
92 | struct { |
93 | __aligned_u64 remote_addr; |
94 | __u32 rkey; |
95 | __u32 reserved; |
96 | } rdma; |
97 | struct { |
98 | __aligned_u64 remote_addr; |
99 | __aligned_u64 compare_add; |
100 | __aligned_u64 swap; |
101 | __u32 rkey; |
102 | __u32 reserved; |
103 | } atomic; |
104 | struct { |
105 | __u32 remote_qpn; |
106 | __u32 remote_qkey; |
107 | __u16 pkey_index; |
108 | __u16 reserved; |
109 | __u32 ah_num; |
110 | __u32 pad[4]; |
111 | struct rxe_av av; |
112 | } ud; |
113 | struct { |
114 | __aligned_u64 addr; |
115 | __aligned_u64 length; |
116 | __u32 mr_lkey; |
117 | __u32 mw_rkey; |
118 | __u32 rkey; |
119 | __u32 access; |
120 | } mw; |
121 | /* reg is only used by the kernel and is not part of the uapi */ |
122 | #ifdef __KERNEL__ |
123 | struct { |
124 | union { |
125 | struct ib_mr *mr; |
126 | __aligned_u64 reserved; |
127 | }; |
128 | __u32 key; |
129 | __u32 access; |
130 | } reg; |
131 | #endif |
132 | } wr; |
133 | }; |
134 | |
135 | struct rxe_sge { |
136 | __aligned_u64 addr; |
137 | __u32 length; |
138 | __u32 lkey; |
139 | }; |
140 | |
141 | struct mminfo { |
142 | __aligned_u64 offset; |
143 | __u32 size; |
144 | __u32 pad; |
145 | }; |
146 | |
147 | struct rxe_dma_info { |
148 | __u32 length; |
149 | __u32 resid; |
150 | __u32 cur_sge; |
151 | __u32 num_sge; |
152 | __u32 sge_offset; |
153 | __u32 reserved; |
154 | union { |
155 | __DECLARE_FLEX_ARRAY(__u8, inline_data); |
156 | __DECLARE_FLEX_ARRAY(__u8, atomic_wr); |
157 | __DECLARE_FLEX_ARRAY(struct rxe_sge, sge); |
158 | }; |
159 | }; |
160 | |
161 | struct rxe_send_wqe { |
162 | struct rxe_send_wr wr; |
163 | __u32 status; |
164 | __u32 state; |
165 | __aligned_u64 iova; |
166 | __u32 mask; |
167 | __u32 first_psn; |
168 | __u32 last_psn; |
169 | __u32 ack_length; |
170 | __u32 ssn; |
171 | __u32 has_rd_atomic; |
172 | struct rxe_dma_info dma; |
173 | }; |
174 | |
175 | struct rxe_recv_wqe { |
176 | __aligned_u64 wr_id; |
177 | __u32 reserved; |
178 | __u32 padding; |
179 | struct rxe_dma_info dma; |
180 | }; |
181 | |
182 | struct rxe_create_ah_resp { |
183 | __u32 ah_num; |
184 | __u32 reserved; |
185 | }; |
186 | |
187 | struct rxe_create_cq_resp { |
188 | struct mminfo mi; |
189 | }; |
190 | |
191 | struct rxe_resize_cq_resp { |
192 | struct mminfo mi; |
193 | }; |
194 | |
195 | struct rxe_create_qp_resp { |
196 | struct mminfo rq_mi; |
197 | struct mminfo sq_mi; |
198 | }; |
199 | |
200 | struct rxe_create_srq_resp { |
201 | struct mminfo mi; |
202 | __u32 srq_num; |
203 | __u32 reserved; |
204 | }; |
205 | |
206 | struct rxe_modify_srq_cmd { |
207 | __aligned_u64 mmap_info_addr; |
208 | }; |
209 | |
210 | /* This data structure is stored at the base of work and |
211 | * completion queues shared between user space and kernel space. |
212 | * It contains the producer and consumer indices. Is also |
213 | * contains a copy of the queue size parameters for user space |
214 | * to use but the kernel must use the parameters in the |
215 | * rxe_queue struct. For performance reasons arrange to have |
216 | * producer and consumer indices in separate cache lines |
217 | * the kernel should always mask the indices to avoid accessing |
218 | * memory outside of the data area |
219 | */ |
220 | struct rxe_queue_buf { |
221 | __u32 log2_elem_size; |
222 | __u32 index_mask; |
223 | __u32 pad_1[30]; |
224 | __u32 producer_index; |
225 | __u32 pad_2[31]; |
226 | __u32 consumer_index; |
227 | __u32 pad_3[31]; |
228 | __u8 data[]; |
229 | }; |
230 | |
231 | #endif /* RDMA_USER_RXE_H */ |
232 | |