[dpdk-users] Effect of Run pktgen application with NIC under linux control and dpdk control

[Wiles, Keith]

> On Feb 21, 2017, at 7:54 AM, SaurabhGL <saggarwal848 at gmail.com> wrote:
> 
> Hi Dpdk Team,
> 
> I am new to dpdk and am trying to run dpdk pktgen application by command
> mentioned below :
> ./pktgen -c 0x1f -n 3 --vdev=eth_pcap0,iface=enp2s0 -- -P -m "[1:3].0"
> 
> Before run the application i execute the script named "dpdk-devbind.py
> --status" It's showing status as mentioned below:

The virtual devices will not show up in dpdk-devbind.py and if the enp2s0 is not suppose to be in the list, but I have not run the eth_pcap device before.

> 
> Network devices using DPDK-compatible driver
> ============================================
> <none>
> 
> Network devices using kernel driver
> ===================================
> 0000:02:00.0 'RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller'
> if=enp2s0 drv=r8169 unused= *Active*
> 0000:04:01.0 '82546EB Gigabit Ethernet Controller (Copper)' if=enp4s1f0
> drv=e1000 unused=
> 0000:04:01.1 '82546EB Gigabit Ethernet Controller (Copper)' if=enp4s1f1
> drv=e1000 unused=
> 
> Other network devices
> =====================
> <none>
> 
> It is showing no interface are under the DPDK-compatible driver list, Is it
> means that we are not using the interface enp2s0 with dpdk?
> if not, Is it affecting  on performance of pktgen application ?
> 
> And Next I to bring the interfaces "enp2s0" from kernel driver list to the
> "DPDK-compatible driver" list as shown below
> 
> Network devices using DPDK-compatible driver
> ============================================
> 0000:02:00.0 'RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller'
> drv=igb_uio unused=r8169,uio_pci_generic
> 
> Network devices using kernel driver
> ===================================
> 0000:04:01.0 '82546EB Gigabit Ethernet Controller (Copper)' if=enp4s1f0
> drv=e1000 unused=igb_uio,uio_pci_generic
> 0000:04:01.1 '82546EB Gigabit Ethernet Controller (Copper)' if=enp4s1f1
> drv=e1000 unused=igb_uio,uio_pci_generic
> 
> Other network devices
> =====================
> <none>
> 
> but I am not able to got the it interface name and not in active mode also,
> How to use now pktgen application without interface name?

I think the eth_pcap the interface needs to be owned by the kernel not DPDK, but I could wrong here.

When you use PCAP the first way does it work?

> 
> Thanks in advance for quick solution
> -- 
> Thanks & Regards
> 
> Saurabh Aggarwal

Regards,
Keith