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/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */
/*
* Header file for the io_uring query interface.
*/
#ifndef LINUX_IO_URING_QUERY_H
#define LINUX_IO_URING_QUERY_H
#include <linux/types.h>
struct io_uring_query_hdr {
__u64 next_entry;
__u64 query_data;
__u32 query_op;
__u32 size;
__s32 result;
__u32 __resv[3];
};
enum {
IO_URING_QUERY_OPCODES = 0,
IO_URING_QUERY_ZCRX = 1,
IO_URING_QUERY_SCQ = 2,
__IO_URING_QUERY_MAX,
};
/* Doesn't require a ring */
struct io_uring_query_opcode {
/* The number of supported IORING_OP_* opcodes */
__u32 nr_request_opcodes;
/* The number of supported IORING_[UN]REGISTER_* opcodes */
__u32 nr_register_opcodes;
/* Bitmask of all supported IORING_FEAT_* flags */
__u64 feature_flags;
/* Bitmask of all supported IORING_SETUP_* flags */
__u64 ring_setup_flags;
/* Bitmask of all supported IORING_ENTER_** flags */
__u64 enter_flags;
/* Bitmask of all supported IOSQE_* flags */
__u64 sqe_flags;
/* The number of available query opcodes */
__u32 nr_query_opcodes;
__u32 __pad;
};
struct io_uring_query_zcrx {
/* Bitmask of supported ZCRX_REG_* flags, */
__u64 register_flags;
/* Bitmask of all supported IORING_ZCRX_AREA_* flags */
__u64 area_flags;
/* The number of supported ZCRX_CTRL_* opcodes */
__u32 nr_ctrl_opcodes;
__u32 __resv1;
/* The refill ring header size */
__u32 rq_hdr_size;
/* The alignment for the header */
__u32 rq_hdr_alignment;
__u64 __resv2;
};
struct io_uring_query_scq {
/* The SQ/CQ rings header size */
__u64 hdr_size;
/* The alignment for the header */
__u64 hdr_alignment;
};
#endif
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