[dpdk-users] VF bound to vfio-pci fails pci_map_device
sowmini05 at gmail.com
Fri Feb 5 01:07:37 CET 2016
I am using dpdk 2.0 on a machine with a Niantic card (3.8.13 kernel),
where I have set up the SR-IOV succesfully
But when I try to run any of the examples with the sriov-vf bound to
the vfio-pci driver, I run into errors, I think it might have to do
with some DPDK env settings that are in error.
# ./build/build/app/test-pmd/testpmd -c 0xf0 -n 4
EAL: probe driver: 8086:10ed rte_ixgbevf_pmd
EAL: Error - exiting with code: 1
Cause: Requested device 0000:90:10.0 cannot be used
Afaict, the error is happening because pci_map_device() is returning
an error, and in my case (dpdk-2.0.0) that is happening because
VFIO_PRESENT is not defined.
Questions are the following:
0. What is the BCP to get sriov/vfio-pci to play nicely with dpdk-2.0.0
1. what is the correct way to make sure VFIO_PRESENT is defined.
Note thataI already have this:
[root at brm-x52-01 dpdk-2.0.0]# grep VFIO build/.config
2. What else needs to be defined for VFIO to stick. I see that
pci_vfio_is_enabled() checks for vfio_cfg.vfio_enabled, so any other
3. My target is a test app that reflects back tcp or udp packets, and
I see that testpmd at least does this for icmp (i.e., for ping). Can
someone share some "BCP" command line to do this with testpmd?
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