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rdma_user_rxe.h
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/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */ /* * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef RDMA_USER_RXE_H #define RDMA_USER_RXE_H #include <linux/types.h> #include <linux/socket.h> #include <linux/in.h> #include <linux/in6.h> enum { RXE_NETWORK_TYPE_IPV4 = 1, RXE_NETWORK_TYPE_IPV6 = 2, }; union rxe_gid { __u8 raw[16]; struct { __be64 subnet_prefix; __be64 interface_id; } global; }; struct rxe_global_route { union rxe_gid dgid; __u32 flow_label; __u8 sgid_index; __u8 hop_limit; __u8 traffic_class; }; struct rxe_av { __u8 port_num; /* From RXE_NETWORK_TYPE_* */ __u8 network_type; __u8 dmac[6]; struct rxe_global_route grh; union { struct sockaddr_in _sockaddr_in; struct sockaddr_in6 _sockaddr_in6; } sgid_addr, dgid_addr; }; struct rxe_send_wr { __aligned_u64 wr_id; __u32 reserved; __u32 opcode; __u32 send_flags; union { __be32 imm_data; __u32 invalidate_rkey; } ex; union { struct { __aligned_u64 remote_addr; __u32 length; __u32 rkey; __u8 type; __u8 level; } flush; struct { __aligned_u64 remote_addr; __u32 rkey; __u32 reserved; } rdma; struct { __aligned_u64 remote_addr; __aligned_u64 compare_add; __aligned_u64 swap; __u32 rkey; __u32 reserved; } atomic; struct { __u32 remote_qpn; __u32 remote_qkey; __u16 pkey_index; __u16 reserved; __u32 ah_num; __u32 pad[4]; struct rxe_av av; } ud; struct { __aligned_u64 addr; __aligned_u64 length; __u32 mr_lkey; __u32 mw_rkey; __u32 rkey; __u32 access; } mw; /* reg is only used by the kernel and is not part of the uapi */ } wr; }; struct rxe_sge { __aligned_u64 addr; __u32 length; __u32 lkey; }; struct mminfo { __aligned_u64 offset; __u32 size; __u32 pad; }; struct rxe_dma_info { __u32 length; __u32 resid; __u32 cur_sge; __u32 num_sge; __u32 sge_offset; __u32 reserved; union { __DECLARE_FLEX_ARRAY(__u8, inline_data); __DECLARE_FLEX_ARRAY(__u8, atomic_wr); __DECLARE_FLEX_ARRAY(struct rxe_sge, sge); }; }; struct rxe_send_wqe { struct rxe_send_wr wr; __u32 status; __u32 state; __aligned_u64 iova; __u32 mask; __u32 first_psn; __u32 last_psn; __u32 ack_length; __u32 ssn; __u32 has_rd_atomic; struct rxe_dma_info dma; }; struct rxe_recv_wqe { __aligned_u64 wr_id; __u32 reserved; __u32 padding; struct rxe_dma_info dma; }; struct rxe_create_ah_resp { __u32 ah_num; __u32 reserved; }; struct rxe_create_cq_resp { struct mminfo mi; }; struct rxe_resize_cq_resp { struct mminfo mi; }; struct rxe_create_qp_resp { struct mminfo rq_mi; struct mminfo sq_mi; }; struct rxe_create_srq_resp { struct mminfo mi; __u32 srq_num; __u32 reserved; }; struct rxe_modify_srq_cmd { __aligned_u64 mmap_info_addr; }; /* This data structure is stored at the base of work and * completion queues shared between user space and kernel space. * It contains the producer and consumer indices. Is also * contains a copy of the queue size parameters for user space * to use but the kernel must use the parameters in the * rxe_queue struct. For performance reasons arrange to have * producer and consumer indices in separate cache lines * the kernel should always mask the indices to avoid accessing * memory outside of the data area */ struct rxe_queue_buf { __u32 log2_elem_size; __u32 index_mask; __u32 pad_1[30]; __u32 producer_index; __u32 pad_2[31]; __u32 consumer_index; __u32 pad_3[31]; __u8 data[]; }; #endif /* RDMA_USER_RXE_H */