On Sat, Apr 09, 2016 at 11:29:18AM -0400, Jamal Hadi Salim wrote: > On 16-04-09 07:29 AM, Tom Herbert wrote: > > >+1. Forwarding which will be a common application almost always > >requires modification (decrement TTL), and header data split has > >always been a weak feature since the device has to have some arbitrary > >rules about what headers needs to be split out (either implements > >protocol specific parsing or some fixed length). > > Then this is sensible. I was cruising the threads and > confused by your earlier emails Tom because you talked > about XPS etc. It sounded like the idea evolved into putting > the whole freaking stack on bpf.
yeah, no stack, no queues in bpf. > If this is _forwarding only_ it maybe useful to look at > Alexey's old code in particular the DMA bits; > he built his own lookup algorithm but sounds like bpf is > a much better fit today. a link to these old bits? Just to be clear: this rfc is not the only thing we're considering. In particular huawei guys did a monster effort to improve performance in this area as well. We'll try to blend all the code together and pick what's the best.
