rdma_user_rxe.h (4971B)
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 __u16 reserved; 102 __u32 ah_num; 103 __u32 pad[4]; 104 struct rxe_av av; 105 } ud; 106 struct { 107 __aligned_u64 addr; 108 __aligned_u64 length; 109 __u32 mr_lkey; 110 __u32 mw_rkey; 111 __u32 rkey; 112 __u32 access; 113 } mw; 114 /* reg is only used by the kernel and is not part of the uapi */ 115#ifdef __KERNEL__ 116 struct { 117 union { 118 struct ib_mr *mr; 119 __aligned_u64 reserved; 120 }; 121 __u32 key; 122 __u32 access; 123 } reg; 124#endif 125 } wr; 126}; 127 128struct rxe_sge { 129 __aligned_u64 addr; 130 __u32 length; 131 __u32 lkey; 132}; 133 134struct mminfo { 135 __aligned_u64 offset; 136 __u32 size; 137 __u32 pad; 138}; 139 140struct rxe_dma_info { 141 __u32 length; 142 __u32 resid; 143 __u32 cur_sge; 144 __u32 num_sge; 145 __u32 sge_offset; 146 __u32 reserved; 147 union { 148 __DECLARE_FLEX_ARRAY(__u8, inline_data); 149 __DECLARE_FLEX_ARRAY(struct rxe_sge, sge); 150 }; 151}; 152 153struct rxe_send_wqe { 154 struct rxe_send_wr wr; 155 __u32 status; 156 __u32 state; 157 __aligned_u64 iova; 158 __u32 mask; 159 __u32 first_psn; 160 __u32 last_psn; 161 __u32 ack_length; 162 __u32 ssn; 163 __u32 has_rd_atomic; 164 struct rxe_dma_info dma; 165}; 166 167struct rxe_recv_wqe { 168 __aligned_u64 wr_id; 169 __u32 num_sge; 170 __u32 padding; 171 struct rxe_dma_info dma; 172}; 173 174struct rxe_create_ah_resp { 175 __u32 ah_num; 176 __u32 reserved; 177}; 178 179struct rxe_create_cq_resp { 180 struct mminfo mi; 181}; 182 183struct rxe_resize_cq_resp { 184 struct mminfo mi; 185}; 186 187struct rxe_create_qp_resp { 188 struct mminfo rq_mi; 189 struct mminfo sq_mi; 190}; 191 192struct rxe_create_srq_resp { 193 struct mminfo mi; 194 __u32 srq_num; 195 __u32 reserved; 196}; 197 198struct rxe_modify_srq_cmd { 199 __aligned_u64 mmap_info_addr; 200}; 201 202/* This data structure is stored at the base of work and 203 * completion queues shared between user space and kernel space. 204 * It contains the producer and consumer indices. Is also 205 * contains a copy of the queue size parameters for user space 206 * to use but the kernel must use the parameters in the 207 * rxe_queue struct. For performance reasons arrange to have 208 * producer and consumer indices in separate cache lines 209 * the kernel should always mask the indices to avoid accessing 210 * memory outside of the data area 211 */ 212struct rxe_queue_buf { 213 __u32 log2_elem_size; 214 __u32 index_mask; 215 __u32 pad_1[30]; 216 __u32 producer_index; 217 __u32 pad_2[31]; 218 __u32 consumer_index; 219 __u32 pad_3[31]; 220 __u8 data[]; 221}; 222 223#endif /* RDMA_USER_RXE_H */