Le ven. 28 févr. 2025 à 22:56, Ryan Lovelett via lists.yoctoproject.org
<ryan.a.lovelett=saic....@lists.yoctoproject.org> a écrit :
> I'm having trouble getting the linux-intel-rt kernel to compile the
> TUN/TAP device driver support directly into the kernel.
>
> What I've tried...
>
> 1. Ran bitbake -c kernel_configme -f virtual/kernel to generate the
> base config.
> 2. Manually enabled the Universal TUN/TAP device driver support:bitbake
> -c menuconfig virtual/kernel
> - -> Device Drivers
> - -> Network device support (NETDEVICES [=y])
> - -> Network core driver support (NET_CORE [=y])
> - -> Universal TUN/TAP device driver support (TUN [=y])
> 3. Ran bitbake -c diffconfig virtual/kernel, which generated
> fragment.cfg containing: CONFIG_TUN=y
> 4. Copied this into enable-tap-tun.cfg and added it to
> linux-intel-rt_%.bbappend:
>
> FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
>
> SRC_URI:prepend = " \
> file://enable-can.cfg \
> file://enable-tap-tun.cfg \
> "
>
>
>
> After building when I try to do modprobe tun the module is not found. I
> believe my config fragments are being processed because it seems
> enable-can.cfg is being applied correctly. Is there some kind of
> conflict, precedence issue, or override preventing my TUN/TAP configuration
> from being applied?
>
With CONFIG_TUN=*y*, TUN should be a built-in driver, not a module you can
modprobe (you would have to use CONFIG_TUN=m for that).
Can you check that the TUN driver is not already running? Do you have a
/dev/net/tun device by any chance?
> Would appreciate any insight.
>
>
>
>
--
Yoann Congal
Smile ECS - Tech expert
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