name : rdma_user_ioctl_cmds.h /* * Copyright (c) 2018, Mellanox Technologies inc. 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_IOCTL_CMDS_H #define RDMA_USER_IOCTL_CMDS_H #include <linux/types.h> #include <linux/ioctl.h> /* Documentation/userspace-api/ioctl/ioctl-number.rst */ #define RDMA_IOCTL_MAGIC 0x1b #define RDMA_VERBS_IOCTL \ _IOWR(RDMA_IOCTL_MAGIC, 1, struct ib_uverbs_ioctl_hdr) enum { /* User input */ UVERBS_ATTR_F_MANDATORY = 1U << 0, /* * Valid output bit should be ignored and considered set in * mandatory fields. This bit is kernel output. */ UVERBS_ATTR_F_VALID_OUTPUT = 1U << 1, }; struct ib_uverbs_attr { __u16 attr_id; /* command specific type attribute */ __u16 len; /* only for pointers and IDRs array */ __u16 flags; /* combination of UVERBS_ATTR_F_XXXX */ union { struct { __u8 elem_id; __u8 reserved; } enum_data; __u16 reserved; } attr_data; union { /* * ptr to command, __inline__ data, idr/fd or * ptr to __u32 array of IDRs */ __aligned_u64 data; /* Used by FD_IN and FD_OUT */ __s64 data_s64; }; }; struct ib_uverbs_ioctl_hdr { __u16 length; __u16 object_id; __u16 method_id; __u16 num_attrs; __aligned_u64 reserved1; __u32 driver_id; __u32 reserved2; struct ib_uverbs_attr attrs[]; }; #endif