[lkml]   [2017]   [Sep]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH net-next 0/3] support changing steering policies in tuntap

On 2017年09月28日 07:25, Willem de Bruijn 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.

Right, the main idea is to introduce a way to change flow steering
policy for tun. I think fanout policy could be implemented through the
API introduced in this series. (Current flow caches based automatic
steering method is tun specific).

> Fanout accrued various strategies until it gained an eBPF variant. Just
> supporting BPF is probably sufficient here, too.

Technically yes, but for tun, it also serve for virt. We probably still
need some hard coded policy which could be changed by guest until we can
accept an BPF program from guest I think?


 \ /
  Last update: 2017-09-28 09:24    [W:0.111 / U:0.348 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site