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Edit File : rdma_user_rxe.h \| Size : 4.67 KB
/* 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 num_sge; __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 / } 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 { __u8 inline_data[0]; struct rxe_sge sge[0]; }; }; 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 num_sge; __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 */ Back

Edit File : rdma_user_rxe.h | Size : 4.67 KB

/* 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			num_sge;
	__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 */
	} 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 {
		__u8		inline_data[0];
		struct rxe_sge	sge[0];
	};
};

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			num_sge;
	__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 */

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