Hi Roberto, When I've seen this it has been caused by a mismatch between the addresses in the injected frame and that configured in the hardware. The transmitting radio doesn't understand it is the intended recipient of the ack and continues retrying. /Björn On Thu, May 13, 2010 at 6:04 PM, Roberto Riggio <roberto.riggio@xxxxxxxxxxxxxx> wrote: > > Hi, > > I'm having a very strange behaviour between two sr71a (ath9k) cards > operating in monitor mode. I'm using the following patch to specify > the transmission rate frame by frame: > > http://thread.gmane.org/gmane.linux.kernel.wireless.general/47441 > > > However if I try to send some traffic between the two nodes with both > interfaces operating in monitor mode I can see from a third machine > using wireshark that albeit the frame is sent and the corresponding > ack generated, the originator seems to ignore the ACK and keepts > retransmitting the frame. This is happening on both ends of the > communication (i'm ping one node from the other). > > As a matter of fact i thought that ACK are handled directly by the > firmware. Any hints? > > R. > -- > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Venatech AB Ideon Innovation Ole Römers väg 12 SE-22370 LUND Sweden +46 (0) 46 286 86 20 info@xxxxxxxxxxx http://www.venatech.se -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
