Re: Fedora 28 fails DPDK 18.11 on Azure/Hyper-V

[Stephen Hemminger <stephen@networkplumber.org>]

On Mon, 26 Nov 2018 22:47:23 +0100
Timothy Redaelli <tredaelli@redhat.com> wrote:

> On Mon, 26 Nov 2018 13:30:46 -0800
> Stephen Hemminger <stephen@networkplumber.org> wrote:
> 
> > Started testing DPDK support of Hyper-V in Fedora and discovered that it doesn't work.
> > Looks like the multiq qdisc is not in the default Fedora kernel configuration.
> > Hopefully CentOS/RHEL don't have the same problem.
> > 
> > Not sure why SCH_MULTIQ is in the shipped kernel config files but not present.
> > Looks like a Fedora build or packaging issue.
> > 
> > # grep MULTIQ /boot/config*
> > /boot/config-4.18.13-200.fc28.x86_64:CONFIG_NET_SCH_MULTIQ=m
> > /boot/config-4.18.18-200.fc28.x86_64:CONFIG_NET_SCH_MULTIQ=m
> > /boot/config-4.19.2-200.fc28.x86_64:CONFIG_NET_SCH_MULTIQ=m
> > 
> > # modinfo sch_multiq
> > modinfo: ERROR: Module sch_multiq not found.  
> 
> Hi,
> the sch_multiq module is present on RHEL8, Fedora 28, 29 and Rawhide,
> but it's in a subpackage called kernel-modules-extra [1]:
> "This package provides less commonly used kernel modules for the kernel
> package."
> 
> So if you install the kernel-modules-extra subpackage you'll find the
> sch_multiq module.
> 
> On RHEL7 you don't need to install the subpackage since it doesn't
> exists.

OK, thanks. probably should put this in the documentation for tap driver.