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 struct { 103 __aligned_u64 addr; 104 __aligned_u64 length; 105 __u32 mr_lkey; 106 __u32 mw_rkey; 107 __u32 rkey; 108 __u32 access; 109 } mw; 110 /* reg is only used by the kernel and is not part of the uapi */ 111#ifdef __KERNEL__ 112 struct { 113 union { 114 struct ib_mr *mr; 115 __aligned_u64 reserved; 116 }; 117 __u32 key; 118 __u32 access; 119 } reg; 120#endif 121 } wr; 122}; 123 124struct rxe_sge { 125 __aligned_u64 addr; 126 __u32 length; 127 __u32 lkey; 128}; 129 130struct mminfo { 131 __aligned_u64 offset; 132 __u32 size; 133 __u32 pad; 134}; 135 136struct rxe_dma_info { 137 __u32 length; 138 __u32 resid; 139 __u32 cur_sge; 140 __u32 num_sge; 141 __u32 sge_offset; 142 __u32 reserved; 143 union { 144 __u8 inline_data[0]; 145 struct rxe_sge sge[0]; 146 }; 147}; 148 149struct rxe_send_wqe { 150 struct rxe_send_wr wr; 151 struct rxe_av av; 152 __u32 status; 153 __u32 state; 154 __aligned_u64 iova; 155 __u32 mask; 156 __u32 first_psn; 157 __u32 last_psn; 158 __u32 ack_length; 159 __u32 ssn; 160 __u32 has_rd_atomic; 161 struct rxe_dma_info dma; 162}; 163 164struct rxe_recv_wqe { 165 __aligned_u64 wr_id; 166 __u32 num_sge; 167 __u32 padding; 168 struct rxe_dma_info dma; 169}; 170 171struct rxe_create_cq_resp { 172 struct mminfo mi; 173}; 174 175struct rxe_resize_cq_resp { 176 struct mminfo mi; 177}; 178 179struct rxe_create_qp_resp { 180 struct mminfo rq_mi; 181 struct mminfo sq_mi; 182}; 183 184struct rxe_create_srq_resp { 185 struct mminfo mi; 186 __u32 srq_num; 187 __u32 reserved; 188}; 189 190struct rxe_modify_srq_cmd { 191 __aligned_u64 mmap_info_addr; 192}; 193 194/* This data structure is stored at the base of work and 195 * completion queues shared between user space and kernel space. 196 * It contains the producer and consumer indices. Is also 197 * contains a copy of the queue size parameters for user space 198 * to use but the kernel must use the parameters in the 199 * rxe_queue struct. For performance reasons arrange to have 200 * producer and consumer indices in separate cache lines 201 * the kernel should always mask the indices to avoid accessing 202 * memory outside of the data area 203 */ 204struct rxe_queue_buf { 205 __u32 log2_elem_size; 206 __u32 index_mask; 207 __u32 pad_1[30]; 208 __u32 producer_index; 209 __u32 pad_2[31]; 210 __u32 consumer_index; 211 __u32 pad_3[31]; 212 __u8 data[]; 213}; 214 215#endif /* RDMA_USER_RXE_H */ 216