rdma_user_ioctl_cmds.h (2620B) - Raw
1 /* 2 * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #ifndef RDMA_USER_IOCTL_CMDS_H 34 #define RDMA_USER_IOCTL_CMDS_H 35 36 #include <linux/types.h> 37 #include <linux/ioctl.h> 38 39 /* Documentation/userspace-api/ioctl/ioctl-number.rst */ 40 #define RDMA_IOCTL_MAGIC 0x1b 41 #define RDMA_VERBS_IOCTL \ 42 _IOWR(RDMA_IOCTL_MAGIC, 1, struct ib_uverbs_ioctl_hdr) 43 44 enum { 45 /* User input */ 46 UVERBS_ATTR_F_MANDATORY = 1U << 0, 47 /* 48 * Valid output bit should be ignored and considered set in 49 * mandatory fields. This bit is kernel output. 50 */ 51 UVERBS_ATTR_F_VALID_OUTPUT = 1U << 1, 52 }; 53 54 struct ib_uverbs_attr { 55 __u16 attr_id; /* command specific type attribute */ 56 __u16 len; /* only for pointers and IDRs array */ 57 __u16 flags; /* combination of UVERBS_ATTR_F_XXXX */ 58 union { 59 struct { 60 __u8 elem_id; 61 __u8 reserved; 62 } enum_data; 63 __u16 reserved; 64 } attr_data; 65 union { 66 /* 67 * ptr to command, __inline__ data, idr/fd or 68 * ptr to __u32 array of IDRs 69 */ 70 __aligned_u64 data; 71 /* Used by FD_IN and FD_OUT */ 72 __s64 data_s64; 73 }; 74 }; 75 76 struct ib_uverbs_ioctl_hdr { 77 __u16 length; 78 __u16 object_id; 79 __u16 method_id; 80 __u16 num_attrs; 81 __aligned_u64 reserved1; 82 __u32 driver_id; 83 __u32 reserved2; 84 struct ib_uverbs_attr attrs[]; 85 }; 86 87 #endif