1 files changed, 68 insertions, 0 deletions
diff --git a/include/uapi/linux/io_uring/query.h b/include/uapi/linux/io_uring/query.h
new file mode 100644
index 000000000000..2456e6c5ebb5
--- /dev/null
+++ b/include/uapi/linux/io_uring/query.h
@@ -0,0 +1,68 @@
+/* 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