Function rte_bbdev_callback_unregister

dpdk/lib/bbdev/rte_bbdev.c:986–1029

}

int
rte_bbdev_callback_unregister(uint16_t dev_id, enum rte_bbdev_event_type event,
		rte_bbdev_cb_fn cb_fn, void *cb_arg)
{
	int ret = 0;
	struct rte_bbdev_callback *cb, *next;
	struct rte_bbdev *dev = get_dev(dev_id);
	VALID_DEV_OR_RET_ERR(dev, dev_id);

	if (event >= RTE_BBDEV_EVENT_MAX) {
		rte_bbdev_log(ERR,
				"Invalid event type (%u), should be less than %u",
				event, RTE_BBDEV_EVENT_MAX);
		return -EINVAL;
	}

	if (cb_fn == NULL) {
		rte_bbdev_log(ERR,
				"NULL callback function cannot be unregistered");
		return -EINVAL;
	}

	dev = &rte_bbdev_devices[dev_id];
	rte_spinlock_lock(&rte_bbdev_cb_lock);

	for (cb = TAILQ_FIRST(&dev->list_cbs); cb != NULL; cb = next) {

		next = TAILQ_NEXT(cb, next);

		if (cb->cb_fn != cb_fn || cb->event != event ||
				(cb_arg != (void *)-1 && cb->cb_arg != cb_arg))
			continue;

		/* If this callback is not executing right now, remove it. */
		if (cb->active == 0) {
			TAILQ_REMOVE(&(dev->list_cbs), cb, next);
			rte_free(cb);
		} else
			ret = -EAGAIN;
	}

	rte_spinlock_unlock(&rte_bbdev_cb_lock);
	return ret;
}

void
rte_bbdev_pmd_callback_process(struct rte_bbdev *dev,