The C and C++ Include Header Files

/usr/include/rdma/rdma_user_ioctl_cmds.h


$ cat -n /usr/include/rdma/rdma_user_ioctl_cmds.h

     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