// SPDX-License-Identifier: GPL-2.0
#ifndef IOU_OP_DEF_H
#define IOU_OP_DEF_H

struct io_uring_bpf_ctx;

struct io_issue_def {
        /* needs req->file assigned */
        unsigned                needs_file : 1;
        /* should block plug */
        unsigned                plug : 1;
        /* supports ioprio */
        unsigned                ioprio : 1;
        /* supports iopoll */
        unsigned                iopoll : 1;
        /* op supports buffer selection */
        unsigned                buffer_select : 1;
        /* hash wq insertion if file is a regular file */
        unsigned                hash_reg_file : 1;
        /* unbound wq insertion if file is a non-regular file */
        unsigned                unbound_nonreg_file : 1;
        /* set if opcode supports polled "wait" */
        unsigned                pollin : 1;
        unsigned                pollout : 1;
        unsigned                poll_exclusive : 1;
        /* skip auditing */
        unsigned                audit_skip : 1;
        /* have to be put into the iopoll list */
        unsigned                iopoll_queue : 1;
        /* vectored opcode, set if 1) vectored, and 2) handler needs to know */
        unsigned                vectored : 1;
        /* set to 1 if this opcode uses 128b sqes in a mixed sq */
        unsigned                is_128 : 1;

        /* size of async data needed, if any */
        unsigned short          async_size;

        /* bpf filter pdu size, if any */
        unsigned short          filter_pdu_size;

        int (*issue)(struct io_kiocb *, unsigned int);
        int (*prep)(struct io_kiocb *, const struct io_uring_sqe *);
        void (*filter_populate)(struct io_uring_bpf_ctx *, struct io_kiocb *);
};

struct io_cold_def {
        const char              *name;

        void (*sqe_copy)(struct io_kiocb *);
        void (*cleanup)(struct io_kiocb *);
        void (*fail)(struct io_kiocb *);
};

extern const struct io_issue_def io_issue_defs[];
extern const struct io_cold_def io_cold_defs[];

bool io_uring_op_supported(u8 opcode);

void io_uring_optable_init(void);
#endif