On Wed, Aug 1, 2018 at 10:25 AM Dave Taht <[email protected]> wrote: > > I wonder if ebpf has opcode space for an invsqrt?
bpf_ktime_get_ns() exists... one thing that I don't know if bpf can do is read/write the skb->tstamp field. The plan would be to rigorously write it (if not supplied by hw) on all ingress ports and check it on all egress ports. That said, every time I've tried to do something in ebpf I hit a limitation I'd not thunk of yet. For example, where can you attach the egress filter? My thought would be to use a bfifo > bpf -> bql, but from what little I understand, it's bpf -> bfifo -> bql -- Dave Täht CEO, TekLibre, LLC http://www.teklibre.com Tel: 1-669-226-2619 _______________________________________________ Cake mailing list [email protected] https://lists.bufferbloat.net/listinfo/cake
