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Diffstat (limited to 'include/uapi/rdma/rdma_user_rxe.h')
| -rw-r--r-- | include/uapi/rdma/rdma_user_rxe.h | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/include/uapi/rdma/rdma_user_rxe.h b/include/uapi/rdma/rdma_user_rxe.h new file mode 100644 index 000000000..73f679dfd --- /dev/null +++ b/include/uapi/rdma/rdma_user_rxe.h @@ -0,0 +1,223 @@ +/* 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 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 */ +#ifdef __KERNEL__ + struct { + union { + struct ib_mr *mr; + __aligned_u64 reserved; + }; + __u32 key; + __u32 access; + } reg; +#endif + } 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(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 */ |