On Thu, 2008-01-17 at 12:32 -0500, Michail Bletsas wrote: > There is quite a bit of important history removed from this discussion. > > We designed the laptop to be able to do mesh forwarding *all the time*. > This was a fundamental decision because it affected every other choice > that we made in the wireless subsystem. > > One of the issues that it introduced is that it makes the radio deviate > from what "proper" radio behavior is supposed to be under Linux these > days: when you bring an interface down (ifconfig eth0 down), its radio > should be disabled. If you don't bring the interface up on boot, the radio > should stay off. Pretty clean and simple. > > When it comes to our radio - we *designed it* to start forward frames soon > after you initialize it and keep doing it regardless of what the host > interface does. > That's why we used a radio with its own CPU and memory. > > So things like "iwconfig eth0 txpower off" might be doing the right thing, > however they do so (if they do**) indirectly, by controlling the host > interface. > > There is an "iwpriv eth0 radiooff/radioon" IOCTL hook in the firmware > which was meant to control the radio power directly - it was removed a few > months ago since it wasn't considered to its thing in the "proper" linux > manner. > > And ever since we keep having this "airplane mode" discussion..... > > M. > > ** I don't know how "iwconfig eth0 txpower off" is implemented, if it uses > the same IOCTL with "iwpriv eth0 radiooff", then it is doing the right > thing.
Yes. iwconfig eth0 txpower off -----> lbs_radio_ioctl(priv, RADIO_OFF); which does CMD_802_11_RADIO_CONTROL (control = !TURN_ON_RF) iwconfig eth0 txpower auto ----> lbs_radio_ioctl(priv, RADIO_ON); which does CMD_802_11_RADIO_CONTROL (control = TURN_ON_RF) then does CMD_802_11_RF_TX_POWER (dbm = 0xFFFF) which is what I understood the radioon/radiooff stuff to do anyway, hence the objection to another non-standard ioctl. Dan > > > "Edward Cherlin" <[EMAIL PROTECTED]> wrote on 01/16/2008 06:56:17 PM: > > > On Jan 16, 2008 2:46 PM, Dan Williams <[EMAIL PROTECTED]> wrote: > > On Wed, 2008-01-16 at 20:22 -0200, Ricardo Carrano wrote: > > > I believe what you want is "radio off", not "mesh stop". > > > "radio off" == iwconfig eth0 txpower off > > > > that's always been around from day #1. > > > > That turns off the radio for this session. How do you disable it so > > it doesn't come on at the next boot? > > > > -- > > Edward Cherlin > > End Poverty at a Profit by teaching children business > > http://www.EarthTreasury.org/ > > "The best way to predict the future is to invent it."--Alan Kay _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel