On Mon, 26 Nov 2018 22:47:23 +0100
Timothy Redaelli [off-list ref] wrote:

On Mon, 26 Nov 2018 13:30:46 -0800
Stephen Hemminger [off-list ref] wrote:

quoted

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.