On 06-07-17 16:36, Ben Greear wrote: > > > On 07/06/2017 12:38 AM, Emmanuel Grumbach wrote: >> On Thu, Jul 6, 2017 at 5:51 AM, Larry Finger >> <[email protected]> wrote: >>> >>> Someone using the rtlwifi code that is posted at GitHub wants to know >>> the iw equivalent of "iwpriv wlan0 bandcfg" to limit the wireless >>> interface to 802.11b, 802.11g, or 802.11n. I only use simple iw >>> commands, and I could not answer the question. >> >> This seems to be a private IOCTL and I can't find the code for that >> handler in the kernel today. Even in wireless extensions.. >> I am not aware of something like this with iw today. >> >> In iwlwifi we have module parameter for this since this should really >> be used seldom. > > I have some patches for wpa_supplicant and the wifi stack (and ath10k) > that lets this work, > but it is fairly invasive, somewhat tricky to configure the supplicant > properly, > and the kernel related patches were rejected some time back, so > it will only live in my trees for the foreseeable future. > > If it is important to someone, they can find my kernels and hostapd and > such here > and maybe google for past email from me about such things for hints: > > https://github.com/greearb
So what has been accepted in the kernel a while ago is to do the above through devicetree configuration as it is considered a system use-case. This was done by commit e691ac2f75b69bee743f0370d79454ba4429b175 Author: Rafał Miłecki <[email protected]> Date: Wed Jan 4 18:58:31 2017 +0100 cfg80211: support ieee80211-freq-limit DT property The DT property is handled by cfg80211 in net/wireless/of.c. Regards, Arend
