Re: Why haven't NetMap or MegaPipe been merged?

On Tue, Feb 13, 2018 at 01:00:39PM -0500, Demi Obenour wrote:

Not sure. The NetMap team at least told me that upstream didn't want their code. This might be because NetMap requires special vendor-provided (but still open source, if I understand correctly) drivers for optimum performance, or it might be because they use a single codebase to support Windows, Linux, and FreeBSD, if I understand correctly.

Well, "special" drivers, as well as a compatibility layer for other operating systems are a very good reason to not get the code merged into the kernel. No subsystem would ever accept such an odd requirement. greg k-h