On Wednesday 10 May 2006 12:52, Jiri Benc wrote: > On Wed, 10 May 2006 00:01:16 +0200, Ivo van Doorn wrote: > > Basicly the dscape stack is performing active scanning while the device is > > down, > > but during the active scan it is sending packets out, or at least > > attempting to do so. > > Besides the question if active scanning is preferred over passive scanning > > while interface is down, > > active scanning fails because the packets that should be send are being > > send through the regular > > xmit routines of the interface. (IFF_UP is not set for the interface) > > When all interfaces are down, the card must be completely disabled. No > transmitting, no receiving. Currently, there is a (minor) bug in IBSS > code in d80211 stack which tries to perform scanning even when the > interface is down. It's not so important because generated probe > requests are never delivered to the driver if the card is disabled (i.e. > no interfaces are up). > > > This means that besides enabling the radio which should be done in the > > driver, the stack should either bring > > up the interface when doing an active scan, or resort to passive scanning > > while interface is down. > > The stack should not perform any scanning when the interface is not up.
Ok thanks. Along with the previous mail about the add_interface and remove_interface this clears up some misunderstanding about the scanning behaviour. ;) Ivo
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