[dpdk-users] Capture traffic with DPDK-dump

[jose suarez]

Hi,

Thank you very much for your response. I followed your comment about the 
full PCI id and now the PDUMP application is working fine :). It creates 
the pcap file.

My problem now is that I noticed that in the testpmd app I don't receive 
any packets. I write below the commands that I use to execute both apps:

# sudo ./x86_64-native-linuxapp-gcc/app/testpmd -c 0x06 -n 4 --proc-type 
primary --socket-mem 1000 --file-prefix pg1 -w 0000:01:00.0 -- -i 
--port-topology=chained

# sudo ./x86_64-native-linuxapp-gcc/app/dpdk-pdump -c 0xf8 -n 4 
--proc-type auto --socket-mem 1000 --file-prefix pg2 -w 0000:01:00.0 -- 
--pdump 'device_id=0000:01:00.0,queue=*,rx-dev=/tmp/file.pcap'

Before I execute these commands, I ensure that all the hugepages are 
free (sudo rm -R /dev/hugepages/*)

In this way I split up the hugepages (I have 2048 in total) between both 
processes, as Keith Wiles advised me. Also I don't overlap any core with 
the masks used (0x06 and 0xf8)

My NIC (Intel 82599ES), which PCI id is 0000:01:00.0, it is connected to 
a 10G link that receives traffic from a mirrored port. I show you the 
internet device settings related to this NIC:

Network devices using DPDK-compatible driver
============================================
0000:01:00.0 '82599ES 10-Gigabit SFI/SFP+ Network Connection' 
drv=igb_uio unused=ixgbe


When I run the testpmd app and check the port stats, I get the following 
output:

#sudo ./x86_64-native-linuxapp-gcc/app/testpmd -c 0x06 -n 4 
--proc-type=auto --socket-mem 1000 --file-prefix pg1 -w 0000:01:00.0 -- 
-i --port-topology=chained
EAL: Detected 8 lcore(s)
EAL: Auto-detected process type: PRIMARY
EAL: Probing VFIO support...
PMD: bnxt_rte_pmd_init() called for (null)
EAL: PCI device 0000:01:00.0 on NUMA socket 0
EAL:   probe driver: 8086:10fb rte_ixgbe_pmd
Interactive-mode selected
USER1: create a new mbuf pool <mbuf_pool_socket_0>: n=155456, size=2176, 
socket=0
Configuring Port 0 (socket 0)
Port 0: XX:XX:XX:XX:XX:XX
Checking link statuses...
Port 0 Link Up - speed 10000 Mbps - full-duplex
Done
testpmd> show port stats 0

   ######################## NIC statistics for port 0 
########################
   RX-packets: 0          RX-missed: 0          RX-bytes:  0
   RX-errors: 0
   RX-nombuf:  0
   TX-packets: 0          TX-errors: 0          TX-bytes:  0

   Throughput (since last show)
   Rx-pps:            0
   Tx-pps:            0
############################################################################

It doesn't receive any packet. Did I missed any step in the 
configuration of the testpmd app?


Thanks!

José.


El 10/11/16 a las 11:56, Pattan, Reshma escribió:
> Hi,
>
> Comments below.
>
> Thanks,
> Reshma
>
>
>> -----Original Message-----
>> From: users [mailto:users-bounces at dpdk.org] On Behalf Of jose suarez
>> Sent: Monday, November 7, 2016 5:50 PM
>> To: users at dpdk.org
>> Subject: [dpdk-users] Capture traffic with DPDK-dump
>>
>> Hello everybody!
>>
>> I am new in DPDK. I'm trying simply to capture traffic from a 10G physical
>> NIC. I installed the DPDK from source files and activated the following
>> modules in common-base file:
>>
>> CONFIG_RTE_LIBRTE_PMD_PCAP=y
>>
>> CONFIG_RTE_LIBRTE_PDUMP=y
>>
>> CONFIG_RTE_PORT_PCAP=y
>>
>> Then I built the distribution using the dpdk-setup.h script. Also I add
>> hugepages and check they are configured successfully:
>>
>> AnonHugePages:      4096 kB
>> HugePages_Total:    2048
>> HugePages_Free:        0
>> HugePages_Rsvd:        0
>> HugePages_Surp:        0
>> Hugepagesize:       2048 kB
>>
>> To capture the traffic I guess I can use the dpdk-pdump application, but I
>> don't know how to use it. First of all, does it work if I bind the interfaces
>> using the uio_pci_generic drive? I guess that if I capture the traffic using the
>> linux kernel driver (ixgbe) I will loose a lot of packets.
>>
>> To bind the NIC I write this command:
>>
>> sudo ./tools/dpdk-devbind.py --bind=uio_pci_generic eth0
>>
>>
>> When I check the interfaces I can see that the NIC was binded successfully.
>> Also I checked that mi NIC is compatible with DPDK (Intel
>> 8599)
>>
>> Network devices using DPDK-compatible driver
>> ============================================
>> 0000:01:00.0 '82599ES 10-Gigabit SFI/SFP+ Network Connection'
>> drv=uio_pci_generic unused=ixgbe,vfio-pci
>>
>>
>> To capture packets, I read in the mailing list that it is necessary to run the
>> testpmd application and then dpdk-pdump using different cores.
>> So I used the following commands:
>>
>> sudo ./x86_64-native-linuxapp-gcc/app/testpmd -c 0x6 -n 4 -- -i
>>
>> sudo ./x86_64-native-linuxapp-gcc/app/dpdk-pdump -c 0xff -n 2 -- --pdump
>> 'device_id=01:00.0,queue=*,rx-dev=/tmp/file.pcap'
> 1)Please pass on the full PCI id, i.e "0000:01:00.0" in the command instead of "01:00.0".
> In latest DPDK 16.11 code  full PCI id is used by eal layer to identify the device.
>
> 2)Also note that you should not use same core mask for both primary and secondary processes in multi process context.
> ex: -c0x6 for testpmd and -c0x2 for dpdk-pdump can be used.
>
> Please let me know how you are proceeding.
>
>
> Thanks,
> Reshma