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