Re: testpmd: no probed ethernet devices i219-v vfio-pci

[sonntex <sonntex@gmail.com>]

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Hi Stephen,

Thank you for the quick response!

I was going to use this network card just for testing.

laptop :: ~ % sudo lspci -n -s 00:1f.6

00:1f.6 0200: 8086:0d4f

I will check dpdk and kernel sources.

On Fri, Mar 8, 2024 at 10:14 PM Stephen Hemminger <
stephen@networkplumber.org> wrote:

> On Fri, 8 Mar 2024 21:19:08 +0000
> sonntex <sonntex@gmail.com> wrote:
>
> > Hi,
> >
> > I am trying to configure dpdk on my laptop and get "no probed ethernet
> > devices" in dpdk-testpmd utility:
> >
> > laptop :: ~ % sudo dpdk-testpmd -l 0-1 -n 4 --log-level=debug -- -i
> > EAL: Detected CPU lcores: 8
> > EAL: Detected NUMA nodes: 1
> > EAL: Detected static linkage of DPDK
> > EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
> > EAL: Selected IOVA mode 'VA'
> > EAL: VFIO support initialized
> > testpmd: No probed ethernet devices
> > Interactive-mode selected
> > testpmd: create a new mbuf pool <mb_pool_0>: n=155456, size=2176,
> socket=0
> > testpmd: preferred mempool ops selected: ring_mp_mc
> > Done
> > testpmd> ...
> >
> > Checked that dpdk 23.07 supports this my NIC at
> > http://doc.dpdk.org/guides/rel_notes/release_23_07.html:
> >
> > Intel Corporation Ethernet Connection (16) I219-V
> > Firmware version: 0.6-4
> > Device id (pf): 8086:1a1f
> > Driver version(in-tree): 5.15.113-rt64 (Ubuntu22.04.2)(e1000)
> >
> > Configuration:
> >
> > laptop :: ~ % pacman -Ss dpdk
> > extra/dpdk 23.07-1 [installed]
> >     A set of libraries and drivers for fast packet processing
> >
> > laptop :: ~ % sudo ethtool -i enp0s31f6
> > driver: e1000e
> > version: 6.7.8-arch1-1
> > firmware-version: 0.6-4
> > expansion-rom-version:
> > bus-info: 0000:00:1f.6
> > supports-statistics: yes
> > supports-test: yes
> > supports-eeprom-access: yes
> > supports-register-dump: yes
> > supports-priv-flags: yes
> >
> > laptop :: ~ % sudo modprobe vfio-pci
> > laptop :: ~ % sudo lsmod | grep vfio
> > vfio_pci               16384  0
> > vfio_pci_core          86016  1 vfio_pci
> > vfio_iommu_type1       45056  0
> > vfio                   73728  3 vfio_pci_core,vfio_iommu_type1,vfio_pci
> > iommufd               106496  1 vfio
> > irqbypass              12288  2 vfio_pci_core,kvm
> >
> > laptop :: ~ % sudo dpdk-hugepages.py -m
> > laptop :: ~ % sudo dpdk-hugepages.py -p 2M --setup 1G
> > laptop :: ~ % sudo dpdk-hugepages.py -s
> > Node Pages Size Total
> > 0    512   2Mb    1Gb
> > Hugepages mounted on /dev/hugepages
> >
> > laptop :: ~ % sudo dpdk-devbind.py --status-dev net
> > Network devices using kernel driver
> > ===================================
> > 0000:00:14.3 'Comet Lake PCH-LP CNVi WiFi 02f0' if=wlan0 drv=iwlwifi
> > unused= *Active*
> > 0000:00:1f.6 'Ethernet Connection (10) I219-V 0d4f' if=enp0s31f6
> drv=e1000e
> > unused=
> >
> > laptop :: ~ % sudo dpdk-devbind.py -b vfio-pci 0000:00:1f.6
> > laptop :: ~ % sudo dpdk-devbind.py --status-dev net
> > Network devices using DPDK-compatible driver
> > ============================================
> > 0000:00:1f.6 'Ethernet Connection (10) I219-V 0d4f' drv=vfio-pci
> > unused=e1000e
> > Network devices using kernel driver
> > ===================================
> > 0000:00:14.3 'Comet Lake PCH-LP CNVi WiFi 02f0' if=wlan0 drv=iwlwifi
> > unused=vfio-pci *Active
> >
> > Any suggestions on what might be missing here?
> >
> > Thanks!
>
> Most likely the DPDK E1000 driver doesn't support the full range of PCI
> device
> id's as the kernel driver. What is PCI information for you? I have similar
> device on this machine.
>
> $ lspci -n -s 00:1f.6
> 00:1f.6 0200: 8086:15fc (rev 20)
>
> In my case the part that matters is the 15fc.
> Looking in DPDK drivers/net/e1000/base/e1000_hw.h, there is no #define for
> that
> type and no entry in drivers/net/e1000/em_ethdev.c:pci_id_em_map[]
>
> In linux kernel the entry is:
> drivers/net/ethernet/intel/e1000e/hw.h:#define
> E1000_DEV_ID_PCH_TGP_I219_V13               0x15FC
>
> The Intel drivers are not in sync.  It is up to the E1000 DPDK
> maintainers to solve.
>
> Note: this older E1000 hardware is not fast, and using DPDK
> except as a test bed is really not worth it.
>

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