On Thu, Nov 18, 2021 at 8:44 PM Honnappa Nagarahalli <honnappa.nagaraha...@arm.com> wrote: > > <snip> > > > > > There was a comment to remove the TLV length. I will do that next > > > > version with implementation. > > > > > > > > Identified the following set of work for this. > > > > > > > > 1) Common code at lib/dwa/ > > > > 2) Marvell DPU based driver at drivers/dwa/cnxk/ > > > > 3) Test application at app/test-dwa/ > > > > 4) It is possible to have an SW driver(To allow non-specialized HW > > > > to use the > > > > framework) for this by: > > > > a) Emulate DWA HW as a separate DPDK process > > > > b) Add drivers/dwa/sw/ and use memif driver so to create a > > > > communication channel between emulated DWA HW process and DPDK > > application. > > > Why use memif driver? Why not ring-pmd? > > > > Planning to emulation DWA accelerator functional model as a separate DPDK > > process in SW case. > You mean the primary and secondary processes correct?
Primary and Primary. (DWA emulation as a separate primary process to mimic the real-world scenario) > > > Therefore memif is the ideal choice as it supports zero-copy of the data as > > well. > > https://doc.dpdk.org/guides/nics/memif.html > Zero-copy in memif is nothing but exchanging pointers to shared data. > The rings work across the primary and secondary processes and are always > zero-copy. > We are doing some perf comparisons between memif and rings, will let you know > once we have the data. Ok. I think between primary to primary memif will be required. > > > > > > > > > > c) Add drivers/dwa/sw/profiles//l3fwd - To implement l3fwd profile > > > > using DPDK libraries for SW driver. > > > > > > > > I think, Item (4) aka SW drivers as useful(We don't need to > > > > implement for all profiles, I think, just for l3fwd it make sense > > > > to add, to allow to use of the framework in just SW mode). > > > > Is there any opinion on adding item (4) in DPDK? I saw mixed > > > > opinions earlier on this. I would like to understand, Is there any > > > > objection to doing > > > > item(4) in DPDK as it needs a good amount of work and I don't want > > > > to do throw it away if the community doesn't like this. > > > > Any opinion? > > > > > > > > [1] > > > > http://mails.dpdk.org/archives/dev/2021-October/226070.html > > > > > > > <snip>
