[dpdk-dev] Fedora 28 fails DPDK 18.11 on Azure/Hyper-V

[Timothy Redaelli]

On Mon, 26 Nov 2018 13:30:46 -0800
Stephen Hemminger <stephen at 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.

[1]
https://src.fedoraproject.org/rpms/kernel/blob/f28/f/mod-extra.list#_130