On Tue, 24 Mar 2020 11:57:45 +0100 Toke Høiland-Jørgensen wrote: > > If everyone is using libbpf, does kernel system (bpf syscall vs > > netlink) matter all that much? > > This argument works the other way as well, though: If libbpf can > abstract the subsystem differences and provide a consistent interface to > "the BPF world", why does BPF need to impose its own syscall API on the > networking subsystem? Hitting the nail on the head there, again :) Once upon a time when we were pushing for libbpf focus & unification, one of my main motivations was that a solid library that most people use give us the ability to provide user space abstractions. As much as adding new kernel interfaces "to rule them all" is fun, it has a real cost.
