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/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
*/
#ifndef RXE_TASK_H
#define RXE_TASK_H
enum {
TASK_STATE_IDLE = 0,
TASK_STATE_BUSY = 1,
TASK_STATE_ARMED = 2,
TASK_STATE_DRAINING = 3,
TASK_STATE_DRAINED = 4,
TASK_STATE_INVALID = 5,
};
/*
* data structure to describe a 'task' which is a short
* function that returns 0 as long as it needs to be
* called again.
*/
struct rxe_task {
struct work_struct work;
int state;
spinlock_t lock;
struct rxe_qp *qp;
int (*func)(struct rxe_qp *qp);
int ret;
long num_sched;
long num_done;
};
int rxe_alloc_wq(void);
void rxe_destroy_wq(void);
/*
* init rxe_task structure
* qp => parameter to pass to func
* func => function to call until it returns != 0
*/
int rxe_init_task(struct rxe_task *task, struct rxe_qp *qp,
int (*func)(struct rxe_qp *));
/* cleanup task */
void rxe_cleanup_task(struct rxe_task *task);
void rxe_run_task(struct rxe_task *task);
void rxe_sched_task(struct rxe_task *task);
/* keep a task from scheduling */
void rxe_disable_task(struct rxe_task *task);
/* allow task to run */
void rxe_enable_task(struct rxe_task *task);
#endif /* RXE_TASK_H */
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