Re: [dpdk-users] testpmd + EAL: No probed ethernet devices + dpdk-17.11.1

[Stephen Hemminger <stephen@networkplumber.org>]

On Tue, 24 Apr 2018 09:44:54 +0530
venkataprasad k <prasaddml@gmail.com> wrote:

> Hi Rami,
> 
> Thanks for your reply.
> yes. i already did the binding and here is the output.
> [root@localhost dpdk-stable-17.11.1]# ./usertools/dpdk-devbind.py -s
> 
> Network devices using DPDK-compatible driver
> ============================================
> 0000:03:00.0 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> 0000:03:00.1 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> 0000:05:00.0 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> 0000:05:00.1 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> 0000:41:00.0 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> 0000:41:00.1 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> 0000:45:00.0 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> 0000:45:00.1 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> 
> Network devices using kernel driver
> ===================================
> 0000:01:00.0 'I350 Gigabit Network Connection 1521' if=enp1s0f0 drv=igb
> unused=vfio-pci *Active*
> 0000:01:00.1 'I350 Gigabit Network Connection 1521' if=enp1s0f1 drv=igb
> unused=vfio-pci
> 0000:01:00.2 'I350 Gigabit Network Connection 1521' if=enp1s0f2 drv=igb
> unused=vfio-pci
> 0000:01:00.3 'I350 Gigabit Network Connection 1521' if=enp1s0f3 drv=igb
> unused=vfio-pci
> 
> Other Network devices
> =====================
> <none>
> 
> similarly tried with igb_uio as well, but i see the same result ( "EAL: No
> probed ethernet devices" )
> 
> Thanks,
> Venkat
> 
> 
> On Mon, Apr 23, 2018 at 9:55 PM, Rosen, Rami <rami.rosen@intel.com> wrote:
> 
> > Hi,
> > You need to bind a device to DPDK before launching testpmd, with the
> > usertools/dpdk-devbind.py script. Did you do it? What is the output
> > of
> > ./usertools/dpdk-devbind.py -s
> > on your host ? do you see any entries under "Network devices using
> > DPDK-compatible driver" when running ./usertools/dpdk-devbind.py -s?
> >
> > Please take a look in the "Linux Getting Started Guide", section
> > 4.4: "Binding and Unbinding Network Ports to/from the Kernel Modules"
> >
> > http://dpdk.org/doc/guides/linux_gsg/linux_drivers.html#
> > binding-and-unbinding-network-ports-to-from-the-kernel-modules
> >
> > Regards,
> > Rami Rosen
> >
> >
> >
> > -----Original Message-----
> > From: users [mailto:users-bounces@dpdk.org] On Behalf Of venkataprasad k
> > Sent: Monday, April 23, 2018 15:35
> > To: users@dpdk.org
> > Subject: [dpdk-users] testpmd + EAL: No probed ethernet devices +
> > dpdk-17.11.1
> >
> > Hello,
> >
> > I am trying to run testpmd application and getting the following error
> > "EAL: No probed ethernet devices"
> >
> > version: dpdk-stable-17.11.1
> > Log:
> > [root@localhost dpdk-stable-17.11.1]#  ./build/app/testpmd –l 12,13,14 –n
> > 4
> > -- -i
> > EAL: Detected 80 lcore(s)
> > EAL: No free hugepages reported in hugepages-1048576kB
> > EAL: Probing VFIO support...
> > EAL: VFIO support initialized
> > EAL: PCI device 0000:01:00.0 on NUMA socket 0
> > EAL:   probe driver: 8086:1521 net_e1000_igb
> > EAL: PCI device 0000:01:00.1 on NUMA socket 0
> > EAL:   probe driver: 8086:1521 net_e1000_igb
> > EAL: PCI device 0000:01:00.2 on NUMA socket 0
> > EAL:   probe driver: 8086:1521 net_e1000_igb
> > EAL: PCI device 0000:01:00.3 on NUMA socket 0
> > EAL:   probe driver: 8086:1521 net_e1000_igb
> > *EAL: No probed ethernet devices*
> > Interactive-mode selected
> > USER1: create a new mbuf pool <mbuf_pool_socket_0>: n=779456, size=2176,
> > socket=0
> > USER1: create a new mbuf pool <mbuf_pool_socket_1>: n=779456, size=2176,
> > socket=1
> > USER1: create a new mbuf pool <mbuf_pool_socket_2>: n=779456, size=2176,
> > socket=2
> > USER1: create a new mbuf pool <mbuf_pool_socket_3>: n=779456, size=2176,
> > socket=3
> > Done  
> > testpmd> show config fwd  
> > io packet forwarding - ports=0 - cores=0 - streams=0 - NUMA support
> > enabled, MP over anonymous pages disabled
> >  
> > testpmd>  
> >
> >
> > from the dpdk-setup script, i see there are devices supported by dpdk
> >
> > Network devices using DPDK-compatible driver ==============================
> > ==============
> > 0000:03:00.0 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> > 0000:03:00.1 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> > 0000:05:00.0 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> > 0000:05:00.1 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> > 0000:41:00.0 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> > 0000:41:00.1 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> > 0000:45:00.0 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> > 0000:45:00.1 'Ethernet Server Bypass Adapter 155d' drv=vfio-pci unused=
> >
> > Network devices using kernel driver
> > ===================================
> > 0000:01:00.0 'I350 Gigabit Network Connection 1521' if=enp1s0f0 drv=igb
> > unused=vfio-pci *Active*
> > 0000:01:00.1 'I350 Gigabit Network Connection 1521' if=enp1s0f1 drv=igb
> > unused=vfio-pci
> > 0000:01:00.2 'I350 Gigabit Network Connection 1521' if=enp1s0f2 drv=igb
> > unused=vfio-pci
> > 0000:01:00.3 'I350 Gigabit Network Connection 1521' if=enp1s0f3 drv=igb
> > unused=vfio-pci
> >
> > Other Network devices
> > =====================
> > <none>
> >
> > My understanding is, it should consider the devices under "Network devices
> > using DPDK-compatible driver", but it is not.
> > The nic that i am using Intel 82599, which is supported by dpdk.
> >
> > can someone help me to understand what is wrong here?
> >
> > Thanks,
> > Venkat
> >  

Check the PCI id's of the devices. I have seen in older releases
where there are some subtypes of Intel Ethernet devices
which are supported by Linux kernel, but not yet in DPDK driver table
(and in some cases small changes to MAC code are needed).