It appears that the vdev_device_list is empty - isn't this where the
probe function for VFIO lives?

rte_bus_probe, file ../lib/eal/common/eal_common_bus.c, vbus->name vdev
vdev_probe, file ../drivers/bus/vdev/vdev.c, PROBE, &vdev_device_list
0x56337bb30d30
vdev_probe, file ../drivers/bus/vdev/vdev.c, dev is (nil)

    This is how I call basicfwd, am I missing something?

sudo examples/dpdk-skeleton -l 1 -n 4

    Thanks,.

Verghis




m

On Tue, Apr 18, 2023 at 10:11 AM Verghis Koshi <vkoshi@gmail.com> wrote:

>     I'm having trouble running the basicfwd example and would appreciate
> any help.
>     I'm running Linux Mint 21.1 inside VirtualBox, and I've created two
> NICs:
>
> verghis@verghis-VirtualBox:~/dpdk-stable-22.11.1/build$
> ../usertools/dpdk-devbind.py --status
>
> Network devices using DPDK-compatible driver
> ============================================
> 0000:00:03.0 '79c970 [PCnet32 LANCE] 2000' drv=vfio-pci unused=pcnet32
>
> Network devices using kernel driver
> ===================================
> 0000:00:08.0 '82540EM Gigabit Ethernet Controller 100e' if=enp0s8
> drv=e1000 unused=vfio-pci *Active*
>
>     The first is bound to vfio-pci, to be used by basicfwd, and the second
> uses the normal e1000 driver.
>     But when I run the code, it doesn't seem to see the VFIO driver at
> all; further, it seems to think that 00:08.0
> is using a non-kernel driver - why?
>     Here's the debug output; it should pick up the single VFIO port.  I
> don't care about the 'even number of ports', that's
> easy to fix.
>     My apologies if I'm overlooking something simple.
>
> verghis@verghis-VirtualBox:~/dpdk-stable-22.11.1/build$ sudo
> examples/dpdk-skeleton -l 1 -n 4
> EAL: Detected CPU lcores: 2
> 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
> rte_vfio_enable, file ../lib/eal/linux/eal_vfio.c, VFIO support initialized
> 0: examples/dpdk-skeleton (rte_dump_stack+0x42) [55bed7d42d62]
> 1: examples/dpdk-skeleton (55bed6cbb000+0x23b39f) [55bed6ef639f]
> 2: examples/dpdk-skeleton (55bed6cbb000+0x239211) [55bed6ef4211]
> 3: examples/dpdk-skeleton (main+0xf) [55bed70ac51f]
> 4: /lib/x86_64-linux-gnu/libc.so.6 (7fbde5fb2000+0x29d90) [7fbde5fdbd90]
> 5: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0x80) [7fbde5fdbe40]
> 6: examples/dpdk-skeleton (_start+0x25) [55bed7b86055]
> rte_bus_probe, file ../lib/eal/common/eal_common_bus.c, bus->name auxiliary
> rte_bus_probe, file ../lib/eal/common/eal_common_bus.c, bus->name dpaa_bus
> rte_bus_probe, file ../lib/eal/common/eal_common_bus.c, bus->name fslmc
> rte_bus_probe, file ../lib/eal/common/eal_common_bus.c, bus->name ifpga
> rte_bus_probe, file ../lib/eal/common/eal_common_bus.c, bus->name pci
> pci_probe, file ../drivers/bus/pci/pci_common.c, dev->name 0000:00:01.1
> pci_probe, file ../drivers/bus/pci/pci_common.c, dev->name 0000:00:02.0
> pci_probe, file ../drivers/bus/pci/pci_common.c, dev->name 0000:00:03.0
> pci_probe, file ../drivers/bus/pci/pci_common.c, dev->name 0000:00:04.0
> pci_probe, file ../drivers/bus/pci/pci_common.c, dev->name 0000:00:05.0
> pci_probe, file ../drivers/bus/pci/pci_common.c, dev->name 0000:00:06.0
> pci_probe, file ../drivers/bus/pci/pci_common.c, dev->name 0000:00:07.0
> pci_probe, file ../drivers/bus/pci/pci_common.c, dev->name 0000:00:08.0
> rte_pci_map_device, file ../drivers/bus/pci/linux/pci.c,
> rte_pci_device->name 0000:00:08.0, dev->kdrv 0
> pci_probe, file ../drivers/bus/pci/pci_common.c, dev->name 0000:00:0d.0
> rte_bus_probe, file ../lib/eal/common/eal_common_bus.c, bus->name vmbus
> rte_bus_probe, file ../lib/eal/common/eal_common_bus.c, bus->name dsa
> rte_bus_probe, file ../lib/eal/common/eal_common_bus.c, vbus->name vdev
> vdev_probe, file ../drivers/bus/vdev/vdev.c, PROBE, &vdev_device_list
> 0x55bed8764d30
> vdev_probe, file ../drivers/bus/vdev/vdev.c, dev is (nil)
> TELEMETRY: No legacy callbacks, legacy socket not created
> main, file ../examples/skeleton/basicfwd.c, nb_ports 0
> EAL: Error - exiting with code: 1
>   Cause: Error: number of ports must be even
>
> Verghis
>