Flow control System tunables ignored on sg-1537

[keyser]

Hi

I seem to have discovered an issue with SG-1537 boxes and flow control on the 10Gbe interfaces.

By default pfsense has flow control enabled on the ix0 and ix1 built in interfaces. I have tried disabling them with a "system tunables" set in the UI pr. following the documentation: hw.ix.flow_control=0

Setting that has no effect on the actual NIC after restart.
Doing a "sysctl -a | grep fc" clearly shows dev.ix.0.fc is still in mode 3 (auto).
Doing a "sysctl -a | grep flow_control" also shows the settings as still being in mode 3

The only way I can disable it is by running a "sysctl dev.ix.0.fc=0" runtime
That works, and the interface no longer shows nor tries txpause,rxpause frames.

But setting dev.ix.0.fc=0 in system tuntables also has no effect after a boot.

This is 24.11, and I tried on 24.03 also - both show the same behaviour.

[elvisimprsntr]

@keyser

did you try putting it in a /boot/loader.conf.local file?

https://docs.netgate.com/pfsense/en/latest/config/advanced-tunables.html#managing-loader-tunables

[keyser]

@elvisimprsntr said in Flow control System tunables ignored on sg-1537:

https://docs.netgate.com/pfsense/en/latest/config/advanced-tunables.html#managing-loader-tunables

No, I thought it would be enough to put them in SYSTEM -> ADVANCED -> SYSTEM TUNABLES.

Am I to understand that menu is only for runtime edits. For boottime tunables I have to put them in the loader.conf manually?

edit: read you documentation link all the way, and yes, that is the conclusion.

Thanks :-)

[elvisimprsntr]

@keyser

Put it in a new file

/boot/loader.conf.local

That way it will survive pfSense upgrades.

I personally install nano to make small file edits via SSH CLI

pkg install nano