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
42enum {
43	RXE_NETWORK_TYPE_IPV4 = 1,
44	RXE_NETWORK_TYPE_IPV6 = 2,
45};
46
47union rxe_gid {
48	__u8	raw[16];
49	struct {
50		__be64	subnet_prefix;
51		__be64	interface_id;
52	} global;
53};
54
55struct 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
63struct 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
75struct rxe_send_wr {
76	__aligned_u64		wr_id;
77	__u32			num_sge;
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	rkey;
88			__u32	reserved;
89		} rdma;
90		struct {
91			__aligned_u64 remote_addr;
92			__aligned_u64 compare_add;
93			__aligned_u64 swap;
94			__u32	rkey;
95			__u32	reserved;
96		} atomic;
97		struct {
98			__u32	remote_qpn;
99			__u32	remote_qkey;
100			__u16	pkey_index;
101		} ud;
102		/* reg is only used by the kernel and is not part of the uapi */
103		struct {
104			union {
105				struct ib_mr *mr;
106				__aligned_u64 reserved;
107			};
108			__u32	     key;
109			__u32	     access;
110		} reg;
111	} wr;
112};
113
114struct rxe_sge {
115	__aligned_u64 addr;
116	__u32	length;
117	__u32	lkey;
118};
119
120struct mminfo {
121	__aligned_u64		offset;
122	__u32			size;
123	__u32			pad;
124};
125
126struct rxe_dma_info {
127	__u32			length;
128	__u32			resid;
129	__u32			cur_sge;
130	__u32			num_sge;
131	__u32			sge_offset;
132	__u32			reserved;
133	union {
134		__u8		inline_data[0];
135		struct rxe_sge	sge[0];
136	};
137};
138
139struct rxe_send_wqe {
140	struct rxe_send_wr	wr;
141	struct rxe_av		av;
142	__u32			status;
143	__u32			state;
144	__aligned_u64		iova;
145	__u32			mask;
146	__u32			first_psn;
147	__u32			last_psn;
148	__u32			ack_length;
149	__u32			ssn;
150	__u32			has_rd_atomic;
151	struct rxe_dma_info	dma;
152};
153
154struct rxe_recv_wqe {
155	__aligned_u64		wr_id;
156	__u32			num_sge;
157	__u32			padding;
158	struct rxe_dma_info	dma;
159};
160
161struct rxe_create_cq_resp {
162	struct mminfo mi;
163};
164
165struct rxe_resize_cq_resp {
166	struct mminfo mi;
167};
168
169struct rxe_create_qp_resp {
170	struct mminfo rq_mi;
171	struct mminfo sq_mi;
172};
173
174struct rxe_create_srq_resp {
175	struct mminfo mi;
176	__u32 srq_num;
177	__u32 reserved;
178};
179
180struct rxe_modify_srq_cmd {
181	__aligned_u64 mmap_info_addr;
182};
183
184#endif /* RDMA_USER_RXE_H */
185