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> |
7 | |
8 | enum io_uring_cmd_flags { |
9 | IO_URING_F_COMPLETE_DEFER = 1, |
10 | IO_URING_F_UNLOCKED = 2, |
11 | /* int's last bit, sign checks are usually faster than a bit test */ |
12 | IO_URING_F_NONBLOCK = INT_MIN, |
13 | |
14 | /* ctx state flags, for URING_CMD */ |
15 | IO_URING_F_SQE128 = 4, |
16 | IO_URING_F_CQE32 = 8, |
17 | IO_URING_F_IOPOLL = 16, |
18 | }; |
19 | |
20 | struct io_uring_cmd { |
21 | struct file *file; |
22 | const void *cmd; |
23 | /* callback to defer completions to task context */ |
24 | void (*task_work_cb)(struct io_uring_cmd *cmd); |
25 | u32 cmd_op; |
26 | u32 pad; |
27 | u8 pdu[32]; /* available inline for free use */ |
28 | }; |
29 | |
30 | #if defined(CONFIG_IO_URING) |
31 | void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, ssize_t res2); |
32 | void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, |
33 | void (*task_work_cb)(struct io_uring_cmd *)); |
34 | struct sock *io_uring_get_socket(struct file *file); |
35 | void __io_uring_cancel(bool cancel_all); |
36 | void __io_uring_free(struct task_struct *tsk); |
37 | void io_uring_unreg_ringfd(void); |
38 | const char *io_uring_get_opcode(u8 opcode); |
39 | |
40 | static inline void io_uring_files_cancel(void) |
41 | { |
42 | if (current->io_uring) { |
43 | io_uring_unreg_ringfd(); |
44 | __io_uring_cancel(false); |
45 | } |
46 | } |
47 | static inline void io_uring_task_cancel(void) |
48 | { |
49 | if (current->io_uring) |
50 | __io_uring_cancel(true); |
51 | } |
52 | static inline void io_uring_free(struct task_struct *tsk) |
53 | { |
54 | if (tsk->io_uring) |
55 | __io_uring_free(tsk); |
56 | } |
57 | #else |
58 | static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, |
59 | ssize_t ret2) |
60 | { |
61 | } |
62 | static inline void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, |
63 | void (*task_work_cb)(struct io_uring_cmd *)) |
64 | { |
65 | } |
66 | static inline struct sock *io_uring_get_socket(struct file *file) |
67 | { |
68 | return NULL; |
69 | } |
70 | static inline void io_uring_task_cancel(void) |
71 | { |
72 | } |
73 | static inline void io_uring_files_cancel(void) |
74 | { |
75 | } |
76 | static inline void io_uring_free(struct task_struct *tsk) |
77 | { |
78 | } |
79 | static inline const char *io_uring_get_opcode(u8 opcode) |
80 | { |
81 | return "" ; |
82 | } |
83 | #endif |
84 | |
85 | #endif |
86 | |