Hello Helmut, Helmut Schaa schrieb: > On Sat, Nov 12, 2011 at 6:00 PM, Andreas Hartmann > <andihartmann@xxxxxxxxxxxxxxx> wrote: >> Could anybody please try to explain this behavior, or even better, fix >> it (it looks really broken to me)? > > AFAIK it is possible to aggregate multiple frames into one URB > for rt2800 USB devices. However, rt2800usb doesn't make use > of this yet while the legacy driver does. Hmm, could this be the reason, why the device gets extremely hot during operation, especially when used in monitor mode (with airmon-ng)? Oh, I just remember, that during my "seven more packets" sniffing, the monitor mode of this device stalled after a few minutes. Probably the same reason why it doesn't work very well (respectively stalls completely) during normal mode. One more thing: At the moment, the tcp data transfer stalls, no more usb packets can be seen ... . > However, I don't think that > this is the cause for the poor performance you see ... Is it normal, that the device gets fired up with submits without waiting for any answers? The usb handling with the legacy driver is absolutely regular (submit / complete / submit / complete), the handling with the rt2800usb driver just looks totally messy to me (the urb ids of the submit / completes don't fit any more, even the "complete" comes before the "submit" (see package 83056 and 83062) ?!). Thanks for your explanation, Andreas -- 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
