On Sun, Nov 08, 2020 at 05:04:41PM +0000, Victor Stewart wrote: > hi all, > > i'm seeking input / comment on the idea of implementing full fledged > zerocopy UDP networking that uses persistent buffers allocated in > userspace... before I go off on a solo tangent with my first patches > lol. > > i'm sure there's been lots of thought/discussion on this before. of > course Willem added MSG_ZEROCOPY on the send path (pin buffers on > demand / per send). and something similar to what I speak of exists > with TCP_ZEROCOPY_RECEIVE. > > i envision something like a new flag like MSG_ZEROCOPY_FIXED that > "does the right thing" in the send vs recv paths.
See the netgpu patches that I posted earlier; these will handle protocol independent zerocopy sends/receives. I do have a working UDP receive implementation which will be posted with an updated patchset. -- Jonathan
