mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Pavel BegunkovandJens Axboe
e366c15e16
"Notification" is too long and the abbreviated version is used in several places, which is inconsistent and more ambiguous for users. Rename it to event, which is easier to keep consistent. To keep the change small, only change uapi/ + do necessary fix ups, and the rest of internals can be adjusted in the next release. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://patch.msgid.link/f95ca6717da3c8d3649a1a7f0d883a563f545052.1784726895.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */
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/*
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* Header file for the io_uring query interface.
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*
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* Copyright (C) 2026 Pavel Begunkov <asml.silence@gmail.com>
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* Copyright (C) Meta Platforms, Inc.
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*/
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#ifndef LINUX_IO_URING_QUERY_H
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#define LINUX_IO_URING_QUERY_H
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#include <linux/types.h>
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struct io_uring_query_hdr {
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__u64 next_entry;
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__u64 query_data;
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__u32 query_op;
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__u32 size;
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__s32 result;
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__u32 __resv[3];
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};
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enum {
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IO_URING_QUERY_OPCODES = 0,
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IO_URING_QUERY_ZCRX = 1,
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IO_URING_QUERY_SCQ = 2,
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IO_URING_QUERY_ZCRX_EVENT = 3,
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__IO_URING_QUERY_MAX,
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};
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/* Doesn't require a ring */
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struct io_uring_query_opcode {
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/* The number of supported IORING_OP_* opcodes */
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__u32 nr_request_opcodes;
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/* The number of supported IORING_[UN]REGISTER_* opcodes */
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__u32 nr_register_opcodes;
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/* Bitmask of all supported IORING_FEAT_* flags */
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__u64 feature_flags;
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/* Bitmask of all supported IORING_SETUP_* flags */
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__u64 ring_setup_flags;
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/* Bitmask of all supported IORING_ENTER_** flags */
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__u64 enter_flags;
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/* Bitmask of all supported IOSQE_* flags */
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__u64 sqe_flags;
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/* The number of available query opcodes */
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__u32 nr_query_opcodes;
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__u32 __pad;
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};
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struct io_uring_query_zcrx {
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/* Bitmask of supported ZCRX_REG_* flags, */
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__u64 register_flags;
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/* Bitmask of all supported IORING_ZCRX_AREA_* flags */
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__u64 area_flags;
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/* The number of supported ZCRX_CTRL_* opcodes */
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__u32 nr_ctrl_opcodes;
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/* Bitmask of ZCRX_FEATURE_* indicating which features are available */
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__u32 features;
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/* The refill ring header size */
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__u32 rq_hdr_size;
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/* The alignment for the header */
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__u32 rq_hdr_alignment;
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__u64 __resv2;
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};
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struct io_uring_query_zcrx_event {
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/* Bitmask of supported ZCRX_EVENT_* flags */
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__u32 event_flags;
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/* Size of zcrx_stats */
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__u32 stats_size;
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/* Required alignment for the stats struct within the region (ie stats_offset) */
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__u32 stats_off_alignment;
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__u32 __resv1;
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__u64 __resv2[4];
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};
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struct io_uring_query_scq {
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/* The SQ/CQ rings header size */
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__u64 hdr_size;
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/* The alignment for the header */
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__u64 hdr_alignment;
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};
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#endif
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