On Fri, Jan 23, 2026 at 05:57:41PM +0100, Thierry Herbelot wrote:
> On 1/23/26 17:50, Bruce Richardson wrote:
> > On Fri, Jan 23, 2026 at 05:27:07PM +0100, Thierry Herbelot wrote:
> > > After an upstream patch (see Fixes), net_ixgbe_vf is no longer
> > > declared in testpmd PMD info, when compiling under Redhat-9:
> > >
> > > > $ meson setup build && ninja -C build
> > > > $ ./usertools/dpdk-pmdinfo.py build/app/dpdk-testpmd|grep ixgbe
> > > > "name": "net_ixgbe",
> > >
> > > Name 'net_ixgbe_vf' should also be reported.
> > >
> > > One workaround is to move 'intel/ixgbe' as last in the list of Intel
> > > drivers. This restores net_ixgbe_vf under Redhat-9:
> > >
> > > > $ meson setup build && ninja -C build
> > > > $ ./usertools/dpdk-pmdinfo.py build/app/dpdk-testpmd|grep ixgbe
> > > > "name": "net_ixgbe_vf",
> > > > "name": "net_ixgbe",
> > >
> > > Fixes: 04f1b16c54f3 ("drivers: merge common and net idpf drivers")
> > > Signed-off-by: Thierry Herbelot <[email protected]>
> > > ---
> > > V2: use shorter lines in commit log.
> > > ---
> > > drivers/net/meson.build | 2 +-
> > > 1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/net/meson.build b/drivers/net/meson.build
> > > index c7dae4ad273c..8d96244cdbb0 100644
> > > --- a/drivers/net/meson.build
> > > +++ b/drivers/net/meson.build
> > > @@ -32,8 +32,8 @@ drivers = [
> > > 'intel/ice',
> > > 'intel/idpf',
> > > 'intel/ipn3ke',
> > > - 'intel/ixgbe',
> > > 'intel/cpfl', # depends on idpf, so must come after it
> > > + 'intel/ixgbe',
> > > 'ionic',
> > > 'mana',
> > > 'memif',
> >
> > This is a strange one - did you do any investgation into why or how this
> > fixes things? You describe it as a workaround so any hints towards a proper
> > root cause and fix are welcome :-)
>
> Hello Bruce,
>
> This is indeed a bit puzzling: it seems that the expected ELF section is
> present, a 'strings' dump shows no difference between a 'full' testpmd and
> one missing ixgbe_vf. Still pmdinfo is missing one PMD.
>
> The issue was not seen when using Ubuntu-24.04.
>
[Not unexpectedly,] it appears that there is more to it than just missing
this driver. Installing a centos 9 VM and doing a clang build and comparing
the pmdinfo output to the GCC build output, I find there are in fact 3
missing drivers in the output: net_dpaa2, net_ixgbe_vf, and net_sfc_efx.
Changing the order of things to move down ixgbe makes ixgbe_vf and sfc_efx
reappear, but sadly net_vcpf now disappears. :-(
Therefore, more investigation and root causing is needed to find a proper
fix.
/Bruce
