[Click] netmap support?

[wbsun]

This sounds interesting.

I haven't tried a complete IP router, but with a simplified one which 
doesn't care ARP and ICMP, it works well. Things may be different 
because I am using my own modified Click and it is hard for me to figure 
out which change makes this work in a short time..

I've got the same problem that after running Click once and killing it 
for a new settings, it was stuck so I had to reload the NIC driver and 
netmap module and re-setup the network configuration. But my performance 
result is good, for a simple forwarding configuration, it achieves a 
13.1Mpps peak performance with a 10Gb Intel 82599 NIC on an old Intel 
Core i7 930 CPU (two of four cores used).

Weibin Sun

On 2013-01-15 13:58, Giorgio Calarco wrote:
> Hi,
>
> if I am not wrong, the From/ToDevice has to be reconfigured, too,
> using METHOD NETMAP explicitly.
> However, METHOD PCAP should work too, but I suppose that
> you would exploit the netmap-based libpcap emulation, which
> should be  slower.
>
>
> Regarding the NETMAP METHOD.
> I can report  that I haven't been able to make a standard IP
> router to work (I was using a 3.0.x kernel), for no good reason.
> (But I had not much time to go in depth.)
> At the best of my knowledge, Luigi Rizzo has not published
> any performance report related to a complete IP router configuration 
> yet
> (only bridging configurations), maybe he can help to
> clarify .
>
> However,  I have been able to use it Click over Netmap
>  as a packet generator: performance were good (1.2Mpps with
> a 1 Gb/s e1000 NIC using a single 2.4 GHz core on a NUMA
>  dual xeon quad core platform), but it was not fully saturated
>  as Luigi Rizzo had reported. Moreover, performance were
> not so reliable/repeatable, and after a few attempts the packet
> generator was stucked (or hanged for 20-30 secs before starting),
> and I was compelled to discharge the module, swith off
> the card, and restart again, a bit annoying.
> However, the NIC I was using was a bit different from his,
> maybe it could be a hardware problem.
>
> Ciao, Giorgio
>
>
>
> On Tue, Jan 15, 2013 at 8:52 PM, Eddie Kohler <ekohler at gmail.com> 
> wrote:
>
>> Click also has preliminary support for native netmap. Configure with
>> --with-netmap and report any bugs here.
>>
>> Eddie
>>
>>
>> On 1/7/13 1:37 AM, Vladimir Olteanu wrote:
>> > Hi,
>> >
>> > A subset of the pcap api (pcap_inject etc.) has been implemented 
>> using
>> > netmap (check Luigi's website). You just need to change 
>> LD_LIBRARY_PATH
>> > before running Click.
>> >
>> > BTW be sure to place "METHOD pcap" in the config strings of all
>> > FromDevice and ToDevice elements.
>> >
>> > Vlad
>> >
>> > On 01/06/2013 04:52 PM, Ashok Anand wrote:
>> >> Hi,
>> >>
>> >> I was wondering if netmap has been integrated with click, and is
>> available
>> >> to use. please let me know.
>> >>
>> >> Regards,
>> >> Ashok
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