> From: Jeff Guo [mailto:jia....@intel.com] > Sent: Thursday, August 27, 2020 12:10 PM > > The limitation of burst size in vector rx was removed, since it should > retrieve as much received packets as possible. And also the scattered > receive path should use a wrapper function to achieve the goal of > burst maximizing. > > This patch set aims to maximize vector rx burst for for > ixgbe/i40e/ice/iavf/fm10k PMDs. > > v2->v1: > 1:add fm10k driver case > 2:refine some doc >
I now noticed that the vector functions also does: nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_I40E_DESCS_PER_LOOP); I am not sure about this, but if I read it correctly, calling rte_eth_rx_burst() with nb_pkts = 33 (not 32) would only return 32 packets, even if more packets are available. (I assume that RTE_I40E_DESCS_PER_LOOP is 32.) In this case, I guess that you need to read the remaining of the requested packets using the non-vector function in order to support any nb_pkts value. That is, unless the rte_eth_rx_burst() API is extended with requirements to nb_pkts, as discussed in the other thread: http://inbox.dpdk.org/dev/20200827114117.gd...@bricha3-mobl.ger.corp.intel.com/T/#mc8051e9022d6aeb20c51c5a226b2274d3d6d4266 Med venlig hilsen / kind regards - Morten Brørup
