Thu, Oct 13, 2016 at 02:30:19PM CEST, j...@mojatatu.com wrote:
>On 16-10-13 08:10 AM, Jiri Pirko wrote:
>> Thu, Oct 13, 2016 at 01:49:07PM CEST, j...@mojatatu.com wrote:
>> > On 16-10-13 04:48 AM, Jiri Pirko wrote:
>> > Roopa, did you mean eth1 as the new device or did you mean just in
>> > general config requiring a device to be specified or did you mean a new
>> > cpu netdev being needed? I couldnt tell from the patch.
>> You just have to have some netdev to use to funnel the IFE headered
>> sample skbs to userspace. A dummy or a tap.
>So with nflog you get basically a backend using a netlink socket
>but in your case you will redirect to tuntap for the case of local
>sflow but some other device for remote? I am assuming using dummy
>would require a packet socket as means of retrieving the data.
Correct. The idea is that the userspace app would create a tap device,
setup the sampling packets to be sent there and recieve them
over chardev. Or the remote delivery could be use to push the sampling
packet to a remote host.
>If you take the structuring of the metadata that nflog uses it should
>be easy to transpose.
Yes, we do it with IFE, this patchset implements that.
>To Roopa's point, however: Would it not make sense to support nflog