On Wed, Sep 27, 2017 at 4:25 PM, Willem de Bruijn <willemdebruijn.ker...@gmail.com> wrote: >>> In the future, both simple and sophisticated policy like RSS or other guest >>> driven steering policies could be done on top. >> >> IMHO there should be a more practical example before adding all this >> indirection. And it would be nice to understand why this queue selection >> needs to be tun specific. > > I was thinking the same and this reminds me of the various strategies > implemented in packet fanout. tun_cpu_select_queue is analogous to > fanout_demux_cpu though it is tun-specific in that it requires tun->numqueues. > > Fanout accrued various strategies until it gained an eBPF variant. Just > supporting BPF is probably sufficient here, too.
+1, in addition to packet fanout, we have SO_REUSEPORT with BPF, RPS, RFS, etc. It would be nice if existing packet steering mechanisms could be leveraged for tun.
