On Fri, 2019-09-13 at 23:01 +0200, Johannes Berg wrote: > On Fri, 2019-09-13 at 13:56 -0700, James Prestwood wrote: > > Hi, > > > > On Fri, 2019-09-13 at 22:48 +0200, Johannes Berg wrote: > > > On Fri, 2019-09-13 at 12:59 -0700, James Prestwood wrote: > > > > Add a new feature bit signifying that the wireless hardware > > > > supports > > > > changing the mac address while the underlying net_device is > > > > UP. Note > > > > that this is slightly different from IFF_LIVE_ADDR_CHANGE as > > > > additional > > > > restrictions might be imposed by the hardware. Typical > > > > restrictions > > > > are: > > > > - No connection is active on this interface, e.g. > > > > carrier is > > > > off > > > > - No scan is in progress > > > > - No offchannel operation is in progress > > > > > > Hmm, what do you need this patch for? > > > > > > IFF_LIVE_ADDR_CHANGE should be sufficient to discover it? > > > > Because userspace needs to know if this is supported? > > IFF_LIVE_ADDR_CHANGE is a private flag... AFAIK userspace has no > > way of > > obtaining this. > > Oh, annoying. > > But that doesn't really mean that nl80211 is an appropriate place to > advertise it, IMHO? The intention of the flag was not soley related to CMD_CONNECT/CMD_AUTHENTICATE. Its an indication that the hardware/driver supports a live address change. If you don't want it here could you suggest a better location for it? > > And in nl80211 you'd need the flag for if you actually have the > "change > MAC address during connect" attribute. > > johannes >
