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0f212204 JA |
1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | #ifndef _LINUX_IO_URING_H | |
3 | #define _LINUX_IO_URING_H | |
4 | ||
5 | #include <linux/sched.h> | |
6 | #include <linux/xarray.h> | |
a9216fac | 7 | #include <uapi/linux/io_uring.h> |
98447d65 | 8 | |
ee692a21 JA |
9 | enum io_uring_cmd_flags { |
10 | IO_URING_F_COMPLETE_DEFER = 1, | |
11 | IO_URING_F_UNLOCKED = 2, | |
12 | /* int's last bit, sign checks are usually faster than a bit test */ | |
13 | IO_URING_F_NONBLOCK = INT_MIN, | |
14 | ||
15 | /* ctx state flags, for URING_CMD */ | |
16 | IO_URING_F_SQE128 = 4, | |
17 | IO_URING_F_CQE32 = 8, | |
18 | IO_URING_F_IOPOLL = 16, | |
91482864 PB |
19 | |
20 | /* the request is executed from poll, it should not be freed */ | |
21 | IO_URING_F_MULTISHOT = 32, | |
ee692a21 JA |
22 | }; |
23 | ||
24 | struct io_uring_cmd { | |
25 | struct file *file; | |
26 | const void *cmd; | |
5756a3a7 KJ |
27 | union { |
28 | /* callback to defer completions to task context */ | |
29 | void (*task_work_cb)(struct io_uring_cmd *cmd); | |
30 | /* used for polled completion */ | |
31 | void *cookie; | |
32 | }; | |
ee692a21 | 33 | u32 cmd_op; |
9cda70f6 | 34 | u32 flags; |
ee692a21 JA |
35 | u8 pdu[32]; /* available inline for free use */ |
36 | }; | |
37 | ||
0f212204 | 38 | #if defined(CONFIG_IO_URING) |
a9216fac AG |
39 | int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, |
40 | struct iov_iter *iter, void *ioucmd); | |
ee692a21 JA |
41 | void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, ssize_t res2); |
42 | void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, | |
43 | void (*task_work_cb)(struct io_uring_cmd *)); | |
a3ec6005 | 44 | struct sock *io_uring_get_socket(struct file *file); |
f552a27a | 45 | void __io_uring_cancel(bool cancel_all); |
0f212204 | 46 | void __io_uring_free(struct task_struct *tsk); |
e7a6c00d | 47 | void io_uring_unreg_ringfd(void); |
33337d03 | 48 | const char *io_uring_get_opcode(u8 opcode); |
0f212204 | 49 | |
f552a27a | 50 | static inline void io_uring_files_cancel(void) |
0f212204 | 51 | { |
e7a6c00d JA |
52 | if (current->io_uring) { |
53 | io_uring_unreg_ringfd(); | |
f552a27a | 54 | __io_uring_cancel(false); |
e7a6c00d | 55 | } |
0f212204 | 56 | } |
3f48cf18 | 57 | static inline void io_uring_task_cancel(void) |
0f212204 | 58 | { |
a4aadd11 | 59 | if (current->io_uring) |
f552a27a | 60 | __io_uring_cancel(true); |
0f212204 JA |
61 | } |
62 | static inline void io_uring_free(struct task_struct *tsk) | |
63 | { | |
64 | if (tsk->io_uring) | |
65 | __io_uring_free(tsk); | |
66 | } | |
67 | #else | |
0e0abad2 | 68 | static inline int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, |
a9216fac AG |
69 | struct iov_iter *iter, void *ioucmd) |
70 | { | |
71 | return -EOPNOTSUPP; | |
72 | } | |
ee692a21 JA |
73 | static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, |
74 | ssize_t ret2) | |
75 | { | |
76 | } | |
77 | static inline void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, | |
78 | void (*task_work_cb)(struct io_uring_cmd *)) | |
79 | { | |
80 | } | |
a3ec6005 JA |
81 | static inline struct sock *io_uring_get_socket(struct file *file) |
82 | { | |
83 | return NULL; | |
84 | } | |
0f212204 JA |
85 | static inline void io_uring_task_cancel(void) |
86 | { | |
87 | } | |
f552a27a | 88 | static inline void io_uring_files_cancel(void) |
0f212204 JA |
89 | { |
90 | } | |
91 | static inline void io_uring_free(struct task_struct *tsk) | |
92 | { | |
93 | } | |
33337d03 DY |
94 | static inline const char *io_uring_get_opcode(u8 opcode) |
95 | { | |
96 | return ""; | |
97 | } | |
0f212204 JA |
98 | #endif |
99 | ||
100 | #endif |