1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 #ifndef IOU_OP_DEF_H 2 #ifndef IOU_OP_DEF_H
3 #define IOU_OP_DEF_H 3 #define IOU_OP_DEF_H
4 4
5 struct io_issue_def { 5 struct io_issue_def {
6 /* needs req->file assigned */ 6 /* needs req->file assigned */
7 unsigned needs_file : 1 7 unsigned needs_file : 1;
8 /* should block plug */ 8 /* should block plug */
9 unsigned plug : 1; 9 unsigned plug : 1;
10 /* hash wq insertion if file is a regu 10 /* hash wq insertion if file is a regular file */
11 unsigned hash_reg_file 11 unsigned hash_reg_file : 1;
12 /* unbound wq insertion if file is a n 12 /* unbound wq insertion if file is a non-regular file */
13 unsigned unbound_nonreg 13 unsigned unbound_nonreg_file : 1;
14 /* set if opcode supports polled "wait 14 /* set if opcode supports polled "wait" */
15 unsigned pollin : 1; 15 unsigned pollin : 1;
16 unsigned pollout : 1; 16 unsigned pollout : 1;
17 unsigned poll_exclusive 17 unsigned poll_exclusive : 1;
18 /* op supports buffer selection */ 18 /* op supports buffer selection */
19 unsigned buffer_select 19 unsigned buffer_select : 1;
>> 20 /* opcode is not supported by this kernel */
>> 21 unsigned not_supported : 1;
20 /* skip auditing */ 22 /* skip auditing */
21 unsigned audit_skip : 1 23 unsigned audit_skip : 1;
22 /* supports ioprio */ 24 /* supports ioprio */
23 unsigned ioprio : 1; 25 unsigned ioprio : 1;
24 /* supports iopoll */ 26 /* supports iopoll */
25 unsigned iopoll : 1; 27 unsigned iopoll : 1;
26 /* have to be put into the iopoll list 28 /* have to be put into the iopoll list */
27 unsigned iopoll_queue : 29 unsigned iopoll_queue : 1;
>> 30 /* opcode specific path will handle ->async_data allocation if needed */
>> 31 unsigned manual_alloc : 1;
28 /* vectored opcode, set if 1) vectored 32 /* vectored opcode, set if 1) vectored, and 2) handler needs to know */
29 unsigned vectored : 1; 33 unsigned vectored : 1;
30 34
31 /* size of async data needed, if any * <<
32 unsigned short async_size; <<
33 <<
34 int (*issue)(struct io_kiocb *, unsign 35 int (*issue)(struct io_kiocb *, unsigned int);
35 int (*prep)(struct io_kiocb *, const s 36 int (*prep)(struct io_kiocb *, const struct io_uring_sqe *);
36 }; 37 };
37 38
38 struct io_cold_def { 39 struct io_cold_def {
>> 40 /* size of async data needed, if any */
>> 41 unsigned short async_size;
>> 42
39 const char *name; 43 const char *name;
40 44
>> 45 int (*prep_async)(struct io_kiocb *);
41 void (*cleanup)(struct io_kiocb *); 46 void (*cleanup)(struct io_kiocb *);
42 void (*fail)(struct io_kiocb *); 47 void (*fail)(struct io_kiocb *);
43 }; 48 };
44 49
45 extern const struct io_issue_def io_issue_defs 50 extern const struct io_issue_def io_issue_defs[];
46 extern const struct io_cold_def io_cold_defs[] 51 extern const struct io_cold_def io_cold_defs[];
47 <<
48 bool io_uring_op_supported(u8 opcode); <<
49 52
50 void io_uring_optable_init(void); 53 void io_uring_optable_init(void);
51 #endif 54 #endif
52 55
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