Commit | Line | Data |
---|---|---|
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, | |
7500194a PB |
12 | /* the request is executed from poll, it should not be freed */ |
13 | IO_URING_F_MULTISHOT = 4, | |
e6aeb272 PB |
14 | /* executed by io-wq */ |
15 | IO_URING_F_IOWQ = 8, | |
ee692a21 JA |
16 | /* int's last bit, sign checks are usually faster than a bit test */ |
17 | IO_URING_F_NONBLOCK = INT_MIN, | |
18 | ||
19 | /* ctx state flags, for URING_CMD */ | |
7500194a PB |
20 | IO_URING_F_SQE128 = (1 << 8), |
21 | IO_URING_F_CQE32 = (1 << 9), | |
22 | IO_URING_F_IOPOLL = (1 << 10), | |
ee692a21 JA |
23 | }; |
24 | ||
25 | struct io_uring_cmd { | |
26 | struct file *file; | |
27 | const void *cmd; | |
5756a3a7 KJ |
28 | union { |
29 | /* callback to defer completions to task context */ | |
9d2789ac | 30 | void (*task_work_cb)(struct io_uring_cmd *cmd, unsigned); |
5756a3a7 KJ |
31 | /* used for polled completion */ |
32 | void *cookie; | |
33 | }; | |
ee692a21 | 34 | u32 cmd_op; |
9cda70f6 | 35 | u32 flags; |
ee692a21 JA |
36 | u8 pdu[32]; /* available inline for free use */ |
37 | }; | |
38 | ||
0f212204 | 39 | #if defined(CONFIG_IO_URING) |
a9216fac AG |
40 | int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, |
41 | struct iov_iter *iter, void *ioucmd); | |
9d2789ac JA |
42 | void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, ssize_t res2, |
43 | unsigned issue_flags); | |
ee692a21 | 44 | void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, |
9d2789ac | 45 | void (*task_work_cb)(struct io_uring_cmd *, unsigned)); |
a3ec6005 | 46 | struct sock *io_uring_get_socket(struct file *file); |
f552a27a | 47 | void __io_uring_cancel(bool cancel_all); |
0f212204 | 48 | void __io_uring_free(struct task_struct *tsk); |
e7a6c00d | 49 | void io_uring_unreg_ringfd(void); |
33337d03 | 50 | const char *io_uring_get_opcode(u8 opcode); |
0f212204 | 51 | |
f552a27a | 52 | static inline void io_uring_files_cancel(void) |
0f212204 | 53 | { |
e7a6c00d JA |
54 | if (current->io_uring) { |
55 | io_uring_unreg_ringfd(); | |
f552a27a | 56 | __io_uring_cancel(false); |
e7a6c00d | 57 | } |
0f212204 | 58 | } |
3f48cf18 | 59 | static inline void io_uring_task_cancel(void) |
0f212204 | 60 | { |
a4aadd11 | 61 | if (current->io_uring) |
f552a27a | 62 | __io_uring_cancel(true); |
0f212204 JA |
63 | } |
64 | static inline void io_uring_free(struct task_struct *tsk) | |
65 | { | |
66 | if (tsk->io_uring) | |
67 | __io_uring_free(tsk); | |
68 | } | |
69 | #else | |
0e0abad2 | 70 | static inline int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, |
a9216fac AG |
71 | struct iov_iter *iter, void *ioucmd) |
72 | { | |
73 | return -EOPNOTSUPP; | |
74 | } | |
ee692a21 | 75 | static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, |
9d2789ac | 76 | ssize_t ret2, unsigned issue_flags) |
ee692a21 JA |
77 | { |
78 | } | |
79 | static inline void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, | |
9d2789ac | 80 | void (*task_work_cb)(struct io_uring_cmd *, unsigned)) |
ee692a21 JA |
81 | { |
82 | } | |
a3ec6005 JA |
83 | static inline struct sock *io_uring_get_socket(struct file *file) |
84 | { | |
85 | return NULL; | |
86 | } | |
0f212204 JA |
87 | static inline void io_uring_task_cancel(void) |
88 | { | |
89 | } | |
f552a27a | 90 | static inline void io_uring_files_cancel(void) |
0f212204 JA |
91 | { |
92 | } | |
93 | static inline void io_uring_free(struct task_struct *tsk) | |
94 | { | |
95 | } | |
33337d03 DY |
96 | static inline const char *io_uring_get_opcode(u8 opcode) |
97 | { | |
98 | return ""; | |
99 | } | |
0f212204 JA |
100 | #endif |
101 | ||
102 | #endif |