Function rte_eth_remove_tx_callback

dpdk/lib/ethdev/rte_ethdev.c:5919–5953

}

int
rte_eth_remove_tx_callback(uint16_t port_id, uint16_t queue_id,
		const struct rte_eth_rxtx_callback *user_cb)
{
#ifndef RTE_ETHDEV_RXTX_CALLBACKS
	return -ENOTSUP;
#endif
	/* Check input parameters. */
	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
	if (user_cb == NULL ||
			queue_id >= rte_eth_devices[port_id].data->nb_tx_queues)
		return -EINVAL;

	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
	int ret = -EINVAL;
	struct rte_eth_rxtx_callback *cb;
	RTE_ATOMIC(struct rte_eth_rxtx_callback *) *prev_cb;

	rte_spinlock_lock(&eth_dev_tx_cb_lock);
	prev_cb = &dev->pre_tx_burst_cbs[queue_id];
	for (; *prev_cb != NULL; prev_cb = &cb->next) {
		cb = *prev_cb;
		if (cb == user_cb) {
			/* Remove the user cb from the callback list. */
			rte_atomic_store_explicit(prev_cb, cb->next, rte_memory_order_relaxed);
			ret = 0;
			break;
		}
	}
	rte_spinlock_unlock(&eth_dev_tx_cb_lock);

	rte_eth_trace_remove_tx_callback(port_id, queue_id, user_cb, ret);

	return ret;
}

int
rte_eth_rx_queue_info_get(uint16_t port_id, uint16_t queue_id,