On 3/3/2017 11:17 AM, Zhiyong Yang wrote: > The rte_eth_tx_burst() function in the file Rte_ethdev.h is invoked to > transmit output packets on the output queue for DPDK applications as > follows. > > static inline uint16_t > rte_eth_tx_burst(uint8_t port_id, uint16_t queue_id, > struct rte_mbuf **tx_pkts, uint16_t nb_pkts); > > Note: The fourth parameter nb_pkts: The number of packets to transmit. > > The rte_eth_tx_burst() function returns the number of packets it actually > sent. Most of PMD drivers can support the policy "send as many packets to > transmit as possible" at the PMD level. but the few of PMDs have some sort > of artificial limits for the pkts sent successfully. For example, VHOST tx > burst size is limited to 32 packets. Some rx_burst functions have the > similar problem. The main benefit is consistent batching behavior for user > to simplify their logic and avoid misusage at the application level, there > is unified rte_eth_tx/rx_burst interface already, there is no reason for > inconsistent behaviors. > This patchset fixes it via adding wrapper function at the PMD level. > > Changes in V2: > 1. rename ixgbe, i40e and fm10k vec function XXX_xmit_pkts_vec to new name > XXX_xmit_fixed_burst_vec, new wrapper functions use original name > XXX_xmit_pkts_vec according to Bruce's suggestion. > > 2. simplify the code to avoid the if or if/else. > > Zhiyong Yang (5): > net/fm10k: remove limit of fm10k_xmit_pkts_vec burst size > net/i40e: remove limit of i40e_xmit_pkts_vec burst size > net/ixgbe: remove limit of ixgbe_xmit_pkts_vec burst size > net/vhost: remove limit of vhost TX burst size > net/vhost: remove limit of vhost RX burst size
Can you please update release notes (release_17_05.rst) with this feature? This patch changes the PMD behavior for the user, that is why it would be nice to mention from this change in release notes. Also i40e_rxtx_vec_altivec.c needs to be updated in patch 2/5. You can keep Konstantin's ack in next patchset. Thanks, ferruh
