Function rte_eth_tx_buffer_flush

dpdk/lib/ethdev/rte_ethdev.h:6590–6611

* Send any packets queued up for transmission on a port and HW queue * * This causes an explicit flush of packets previously buffered via the * rte_eth_tx_buffer() function. It returns the number of packets successfully * sent to the NIC, and calls the error callback for any unsent packets. Unless * explicitly set up otherwise, the default callback simply frees the unsent * packets back to t

 *   callback is called for any packets which could not be sent.
 */
static inline uint16_t
rte_eth_tx_buffer_flush(uint16_t port_id, uint16_t queue_id,
		struct rte_eth_dev_tx_buffer *buffer)
{
	uint16_t sent;
	uint16_t to_send = buffer->length;

	if (to_send == 0)
		return 0;

	sent = rte_eth_tx_burst(port_id, queue_id, buffer->pkts, to_send);

	buffer->length = 0;

	/* All packets sent, or to be dealt with by callback below */
	if (unlikely(sent != to_send))
		buffer->error_callback(&buffer->pkts[sent],
				       (uint16_t)(to_send - sent),
				       buffer->error_userdata);

	return sent;
}

/**
 * Buffer a single packet for future transmission on a port and queue