[dpdk-dev] Capture packets using DPDK

[dpdk-dev] Capture packets using DPDK

[K Rahul]

Hello,

We are building a real-time application to monitor IP packets. This 
application captures packets on UDP which are received by joining 
multicast sessions.

We have downloaded DPDK v2.1.0 and built it with target 
'x86_64-native-linuxapp-gcc' using the setup.sh script provided in tools 
directory. We are using 64-bit Centos 6.5 with kernel version 2.6.32 and 
we had set the number of hugepages (per node) to 512.  Our capture card 
is *Broadcom NetXtreme II BCM5709 Gigabit Ethernet* on which we want to 
use dpdk and the system config is i7 quad-core@3.4Ghz with 
Hyperthreading ON, which supports 2MB hugepages.

We have gone through the DPDK 
documentation(http://dpdk.readthedocs.org/en/latest). Using the 
dpdk_nic_bind.py script, We were able to bind */uio_pci_generic/* driver 
with *Broadcom NetXtreme II*, which was also reflected by the script 
using the '--status' argument.

To test dpdk, I have built pktgen v2.9.2 application and also gone 
through pktgen documentation(http://pktgen.readthedocs.org/en/latest). 
But whenever I run the command ' ./ pktgen -c 0x1f -n 3 -- -P -m 
"[1:3].0" ' I get the following error:

/>>> Packet Burst 32, RX Desc 512, TX Desc 512, mbufs/port 4096, mbuf 
cache 512//
//!PANIC!: *** *Did not find any ports to use* ***//
//PANIC in pktgen_config_ports()://
//*** Did not find any ports to use ***6: [./pktgen() [0x42f825]]//
//5: [/lib64/libc.so.6(__libc_start_main+0xfd) [0x7ff3c9727d5d]]//
//4: [./pktgen(main+0x489) [0x42e0f9]]//
//3: [./pktgen(pktgen_config_ports+0x118b) [0x4504eb]]//
//2: [./pktgen(__rte_panic+0xc9) [0x428f95]]//
//1: [./pktgen(rte_dump_stack+0x16) [0x4ef116]]//
//Aborted (core dumped)/

Is there any way to find the ports available that can be used by DPDK 
applications, or is there any way to configure ports?

 From the documentation mentioned above 
(http://dpdk.readthedocs.org/en/latest), we were not able to proceed any 
further. Any help on how to use DPDK step by step will be appreciated.

Regards,
K Rahul
Interra Systems

Re: [dpdk-dev] Capture packets using DPDK

[Stephen Hemminger]

On Wed, 23 Sep 2015 18:43:37 +0530
K Rahul <krahul@noida.interrasystems.com> wrote:

> We have downloaded DPDK v2.1.0 and built it with target 
> 'x86_64-native-linuxapp-gcc' using the setup.sh script provided in tools 
> directory. We are using 64-bit Centos 6.5 with kernel version 2.6.32 and 
> we had set the number of hugepages (per node) to 512.  Our capture card 
> is *Broadcom NetXtreme II BCM5709 Gigabit Ethernet* on which we want to 
> use dpdk and the system config is i7 quad-core@3.4Ghz with 
> Hyperthreading ON, which supports 2MB hugepages.

The bnx2x driver only supports the Broadcom 10G cards, not the 1G cards.

If you look at Linux you will see the 1G cards use a different driver (bnx2)
than the 10G cards (bnx2x).