xref: /openbmc/linux/io_uring/opdef.h (revision f30bd4d0)
1 // SPDX-License-Identifier: GPL-2.0
2 #ifndef IOU_OP_DEF_H
3 #define IOU_OP_DEF_H
4 
5 struct io_issue_def {
6 	/* needs req->file assigned */
7 	unsigned		needs_file : 1;
8 	/* should block plug */
9 	unsigned		plug : 1;
10 	/* hash wq insertion if file is a regular file */
11 	unsigned		hash_reg_file : 1;
12 	/* unbound wq insertion if file is a non-regular file */
13 	unsigned		unbound_nonreg_file : 1;
14 	/* set if opcode supports polled "wait" */
15 	unsigned		pollin : 1;
16 	unsigned		pollout : 1;
17 	unsigned		poll_exclusive : 1;
18 	/* op supports buffer selection */
19 	unsigned		buffer_select : 1;
20 	/* opcode is not supported by this kernel */
21 	unsigned		not_supported : 1;
22 	/* skip auditing */
23 	unsigned		audit_skip : 1;
24 	/* supports ioprio */
25 	unsigned		ioprio : 1;
26 	/* supports iopoll */
27 	unsigned		iopoll : 1;
28 	/* have to be put into the iopoll list */
29 	unsigned		iopoll_queue : 1;
30 	/* opcode specific path will handle ->async_data allocation if needed */
31 	unsigned		manual_alloc : 1;
32 
33 	int (*issue)(struct io_kiocb *, unsigned int);
34 	int (*prep)(struct io_kiocb *, const struct io_uring_sqe *);
35 };
36 
37 struct io_cold_def {
38 	/* size of async data needed, if any */
39 	unsigned short		async_size;
40 
41 	const char		*name;
42 
43 	int (*prep_async)(struct io_kiocb *);
44 	void (*cleanup)(struct io_kiocb *);
45 	void (*fail)(struct io_kiocb *);
46 };
47 
48 extern const struct io_issue_def io_issue_defs[];
49 extern const struct io_cold_def io_cold_defs[];
50 
51 void io_uring_optable_init(void);
52 #endif
53