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