Hi Anders, On Mon, 23 May 2022 14:51:17 -0600 "Anders Pitman" <and...@apitman.com> wrote:
> I came across this blog post[0] concerning passt, which is an > alternative usermode networking implementation for QEMU. ...and I just came across your email, entirely by chance. I'm not actively monitoring this list most of the time. > I'm working on a project that uses QEMU on Windows hosts running > Linux guests. I'm trying to get faster usermode networking than is > available with libslirp. My performance target is 200Mbps even on > older or less powerful hardware, such as Celeron mini PCs. Currently > I'm seeing 15-30MBps with libslirp. > > It appears that passt doesn't currently support Windows, correct? Is > there a guess as to how difficult that might be to implement? If the > speedup is significant, I would be interested in taking a crack at > adding Windows support. I gave some quick comments about the challenges I see in the perspective of a FreeBSD port at: https://bugs.passt.top/show_bug.cgi?id=6#c2 and I suppose a Windows port, by the way tracked at: https://bugs.passt.top/show_bug.cgi?id=8 could face similar challenges. But from a quick browsing of the Winsock reference documentation months ago, it actually looked easier because there seemed to be a description of an equivalent for every bit of TCP socket information we're fetching on Linux via TCP_INFO socket option. I can try to remember/double check and give more details if it helps, but if you're familiar with Windows development I suppose I wouldn't add much value. :) -- Stefano
