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69 lines
1.7 KiB
69 lines
1.7 KiB
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ |
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/* |
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* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. |
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* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. |
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*/ |
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#ifndef RXE_TASK_H |
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#define RXE_TASK_H |
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enum { |
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TASK_STATE_START = 0, |
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TASK_STATE_BUSY = 1, |
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TASK_STATE_ARMED = 2, |
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}; |
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/* |
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* data structure to describe a 'task' which is a short |
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* function that returns 0 as long as it needs to be |
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* called again. |
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*/ |
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struct rxe_task { |
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void *obj; |
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struct tasklet_struct tasklet; |
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int state; |
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spinlock_t state_lock; /* spinlock for task state */ |
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void *arg; |
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int (*func)(void *arg); |
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int ret; |
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char name[16]; |
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bool destroyed; |
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}; |
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/* |
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* init rxe_task structure |
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* arg => parameter to pass to fcn |
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* func => function to call until it returns != 0 |
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*/ |
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int rxe_init_task(void *obj, struct rxe_task *task, |
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void *arg, int (*func)(void *), char *name); |
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/* cleanup task */ |
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void rxe_cleanup_task(struct rxe_task *task); |
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/* |
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* raw call to func in loop without any checking |
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* can call when tasklets are disabled |
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*/ |
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int __rxe_do_task(struct rxe_task *task); |
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/* |
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* common function called by any of the main tasklets |
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* If there is any chance that there is additional |
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* work to do someone must reschedule the task before |
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* leaving |
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*/ |
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void rxe_do_task(struct tasklet_struct *t); |
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/* run a task, else schedule it to run as a tasklet, The decision |
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* to run or schedule tasklet is based on the parameter sched. |
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*/ |
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void rxe_run_task(struct rxe_task *task, int sched); |
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/* keep a task from scheduling */ |
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void rxe_disable_task(struct rxe_task *task); |
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/* allow task to run */ |
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void rxe_enable_task(struct rxe_task *task); |
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#endif /* RXE_TASK_H */
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