netmap pipes (Re: vnet + netmap: how is it possible?)

[Dennis Yusupoff]

Luigi, it will be really brilliant if you would be kind to show more
examples of use netmap with pipes, netgraph modules (for example,
ng_netflow) and so on, because many of network engineers use FreeBSD
without as strong programming skills as you have. At least I'm the one
of they. ;)

BTW, Ermal, are the any chances to see you patches for work dummynet in
the PF?

10.02.2014 21:28, Luigi Rizzo пишет:
> On Mon, Feb 10, 2014 at 12:44 AM, Ermal Luçi <eri at freebsd.org> wrote:
>
>> Hello Luigi,
>>
>> On Mon, Feb 10, 2014 at 2:14 AM, Luigi Rizzo <rizzo at iet.unipi.it> wrote:
>>
>>> On Sun, Feb 9, 2014 at 4:21 PM, Raimundo Santos <raitech at gmail.com>
>>> wrote:
>>>
>>>> Hello list!
>>>>
>>>> I am willing to test an idea: modularize network functions using vnet
>>>> jails. One vnet jail do the NAT, other do balancing, another one the
>>>> traffic shapping, and so on.
>>>>
>>> For these low level packet processing functions, jails are overkill.
>>>
>>> The upcoming version of netmap has "netmap pipes",
>>> pairs of netmap ports connected back to back and sharing memory,
>>> with blocking I/O through select/poll/epoll (and we are looking
>>> at supporting kqueue).
>>>
>>> You can use netmap pipes to build a graph of processes (nodes)
>>> which apply the desired transformations to your traffic.
>>> Nodes can be anything that speaks netmap (or libpcap),
>>> including your custom C code, Click instances, or whatever
>>> you like.
>>>
>>>
>> Is this netgraph overlayed over netmap or is something rewritten from
>> scratch?
>>
> nothing to do with netgraph, this is "simply" an
> extension of the netmap module. Also note this
> only provides the interconnection, you still have
> to build the processing modules.
>
> cheers
> luigi
>
> _______________________________________________
> freebsd-net at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe at freebsd.org"
>
>

-- 
Best regards,
Dennis Yusupoff,
network engineer of
Smart-Telecom ISP
Russia, Saint-Petersburg