On Tue, 2013-12-10 at 18:14 +0100, Pali Rohár wrote: > On Tuesday 10 December 2013 17:10:50 Pali Rohár wrote: > > On Tuesday 10 December 2013 16:49:23 Kalle Valo wrote: > > > Pali Rohár <pali.ro...@gmail.com> writes: > > > > Driver wl1251 generating mac address randomly at startup > > > > and there is no way to set permanent mac address via > > > > SET_IEEE80211_PERM_ADDR. This patch export sysfs file > > > > which can set permanent mac address by userspace helper > > > > program. Patch is needed for devices which do not store > > > > mac address in internal wl1251 eeprom. > > > > > > > > Signed-off-by: Pali Rohár <pali.ro...@gmail.com> > > > > > > We have ioctl() command for setting the mac address. > > > > Really? Is there ioctl for setting permanent mac address? > > Can you show me it? > > Now I looked at it again and I did not found any ioctl for it. > There is only ioctl cmd for getting address, not setting it. > > #define SIOCETHTOOL 0x8946 > > /* Get permanent hardware address */ > #define ETHTOOL_GPERMADDR 0x00000020
Yeah, because it's supposed to be permanent and unchanging. Which means if there was an ioctl for it, that would be contrary to the purpose of a permanent MAC address. I realize the N900 stores the WiFi MAC address completely differently than many other systems, and that's why this sysfs file was created. I don't really have a great converged solution for that, other than what you've currently got, or perhaps adding SPERMADDR to ethtool. One thing I *would* like though, is a restriction on the sysfs file such that if the permanent MAC is already set, it cannot be set again. Otherwise the permanent MAC address isn't permanent at all. Dan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
