On 3/8/2017 1:35 PM, raman geetha gopalakrishnan wrote: > Hi All, > > I have the following basic question. Hope to get an answer / link where i > can get myself clear. > > 1. In DPDK PMD is optimized driver for an given NIC to get maximum > performance. > That being the case why we are talking about DPDK supported NICs. > > A) My assumption is that NIC interface is standardized so that PMD > should actually work with any NIC (barring some NIC specific performance > tweaks) > is that correct?
PMDs (Poll Mode Drivers) are _real_ device drivers, they are not an optimization layer on top off a standardized interface, they deal directly with hardware, so needs to be specific to hardware. > > B) if #A is correct , how can i make changes to PMD to support any NIC > ? > > if i have to put the above question in different way then it is > > 2. what is preventing us from having a common PMD layer for all NICs and > additional PMD specific to each NIC??? > > Thanks > Raman >
