* The number of packets correct and ready to be sent. The return value can be
* less than the value of the *tx_pkts* parameter when some packet doesn't
* meet devices requirements with rte_errno set appropriately:
* The number of packets correct and ready to be sent. The return value can be
* less than the value of the *tx_pkts* parameter when some packet doesn't
* meet devices requirements with rte_errno set appropriately: