Netmap software interface mirror / netmap monitor

[Pavel Odintsov]

Hello!

Work like a charm!

I have started two pkt-gen apps in monitoring mode for main
application simultaneously and got same traffic for three apps! That's
awesome! Really brilliant feature! Thanks so much for your work!

./pkt-gen -i netmap:eth1/rt
703.793991 main [1930] interface is netmap:eth1/rt
703.794050 main [2050] running on 1 cpus (have 8)
703.794227 extract_ip_range [367] range is 10.0.0.1:0 to 10.0.0.1:0
703.794245 extract_ip_range [367] range is 10.1.0.1:0 to 10.1.0.1:0
703.794648 main [2148] mapped 334980KB at 0x7fb9dfd7d000
Receiving from netmap:eth1/rt: 1 queues, 1 threads and 1 cpus.
703.794680 main [2235] Wait 2 secs for phy reset
705.794774 main [2237] Ready...
705.794923 receiver_body [1412] reading from netmap:eth1/rt fd 3 main_fd 3
706.795880 main_thread [1720] 722.277 Kpps (723.030 Kpkts 4.485 Gbps
in 1001042 usec) 15.40 avg_batch 0 min_space
707.796928 main_thread [1720] 733.192 Kpps (733.960 Kpkts 4.529 Gbps
in 1001048 usec) 15.72 avg_batch 317 min_space
708.797974 main_thread [1720] 753.922 Kpps (754.710 Kpkts 4.690 Gbps
in 1001045 usec) 14.45 avg_batch 328 min_space
709.799034 main_thread [1720] 726.498 Kpps (727.269 Kpkts 4.496 Gbps
in 1001061 usec) 14.21 avg_batch 374 min_space


./pkt-gen -i netmap:eth1/rt
723.359000 main [1930] interface is netmap:eth1/rt
723.359062 main [2050] running on 1 cpus (have 8)
723.359258 extract_ip_range [367] range is 10.0.0.1:0 to 10.0.0.1:0
723.359282 extract_ip_range [367] range is 10.1.0.1:0 to 10.1.0.1:0
723.359610 main [2148] mapped 334980KB at 0x7f1e1a67e000
Receiving from netmap:eth1/rt: 1 queues, 1 threads and 1 cpus.
723.359657 main [2235] Wait 2 secs for phy reset
725.359733 main [2237] Ready...
725.359814 receiver_body [1412] reading from netmap:eth1/rt fd 3 main_fd 3
726.360884 main_thread [1720] 765.146 Kpps (765.975 Kpkts 4.794 Gbps
in 1001083 usec) 10.42 avg_batch 0 min_space
727.361920 main_thread [1720] 756.678 Kpps (757.461 Kpkts 4.683 Gbps
in 1001035 usec) 12.66 avg_batch 330 min_space
728.362984 main_thread [1720] 695.403 Kpps (696.144 Kpkts 4.208 Gbps
in 1001065 usec) 14.78 avg_batch 298 min_space
729.364064 main_thread [1720] 693.850 Kpps (694.599 Kpkts 4.192 Gbps
in 1001080 usec) 14.35 avg_batch 332 min_space
730.365101 main_thread [1720] 732.741 Kpps (733.501 Kpkts 4.519 Gbps
in 1001037 usec) 9.72 avg_batch 303 min_space



On Fri, Jan 8, 2016 at 10:24 PM, Pavel Odintsov
<pavel.odintsov at gmail.com> wrote:
> That's awesome! Thanks for lightning fast answer! Will check soon!
>
> On Fri, Jan 8, 2016 at 9:46 PM, Luigi Rizzo <rizzo at iet.unipi.it> wrote:
>> On Fri, Jan 8, 2016 at 10:35 AM, Pavel Odintsov
>> <pavel.odintsov at gmail.com> wrote:
>>> Hello, Dear Community!
>>>
>>> I'm working with netmap and my application uses netmap for traffic
>>> capture. It's works really well.
>>>
>>> But I need some way to feed same data from physical interface to two
>>> or more applications.
>>>
>>> I have found this code
>>> https://github.com/luigirizzo/netmap/blob/master/sys/dev/netmap/netmap_monitor.c
>>> but could not find any docs about it.
>>>
>>> Could you help me with examples and use cases?
>>
>> look at netmap_user.h, where it explains how to open a port
>> in monitor mode.
>> Essentially, once you have an active netmap port say netmap:ix0, you can
>> sniff the traffic opening additional netmap ports named
>>    netmap:ix0/r (for rx traffic) or netmap:ix0/t (for tx)
>> or even netmap:ix0/rt  (for both tx and rx)
>>
>> Giuseppe (in Cc) can give more details
>>
>> cheers
>> luigi
>
>
>
> --
> Sincerely yours, Pavel Odintsov



-- 
Sincerely yours, Pavel Odintsov