1// SPDX-License-Identifier: GPL-2.0
2#ifndef IOU_OP_DEF_H
3#define IOU_OP_DEF_H
4
5struct io_issue_def {
6 /* needs req->file assigned */
7 unsigned needs_file : 1;
8 /* should block plug */
9 unsigned plug : 1;
10 /* supports ioprio */
11 unsigned ioprio : 1;
12 /* supports iopoll */
13 unsigned iopoll : 1;
14 /* op supports buffer selection */
15 unsigned buffer_select : 1;
16 /* hash wq insertion if file is a regular file */
17 unsigned hash_reg_file : 1;
18 /* unbound wq insertion if file is a non-regular file */
19 unsigned unbound_nonreg_file : 1;
20 /* set if opcode supports polled "wait" */
21 unsigned pollin : 1;
22 unsigned pollout : 1;
23 unsigned poll_exclusive : 1;
24 /* skip auditing */
25 unsigned audit_skip : 1;
26 /* have to be put into the iopoll list */
27 unsigned iopoll_queue : 1;
28 /* vectored opcode, set if 1) vectored, and 2) handler needs to know */
29 unsigned vectored : 1;
30
31 /* size of async data needed, if any */
32 unsigned short async_size;
33
34 int (*issue)(struct io_kiocb *, unsigned int);
35 int (*prep)(struct io_kiocb *, const struct io_uring_sqe *);
36};
37
38struct io_cold_def {
39 const char *name;
40
41 void (*sqe_copy)(struct io_kiocb *);
42 void (*cleanup)(struct io_kiocb *);
43 void (*fail)(struct io_kiocb *);
44};
45
46extern const struct io_issue_def io_issue_defs[];
47extern const struct io_cold_def io_cold_defs[];
48
49bool io_uring_op_supported(u8 opcode);
50
51void io_uring_optable_init(void);
52#endif
53