Francesco and Lorenzo, In my latest test, I cut the RX and TX queue depths to 32 and ran my usual stress test. This time I logged whenever there was an increase in the depth of the txstatus queue, and whenever the queue depth was 16. The results were as follows: Feb 24 19:27:08 mtech kernel: b43: Max Queue depth is now 2 Feb 24 19:27:12 mtech kernel: b43: Max Queue depth is now 3 Feb 24 19:27:12 mtech kernel: b43: Max Queue depth is now 4 Feb 24 19:27:12 mtech kernel: b43: Max Queue depth is now 5 Feb 24 19:27:12 mtech kernel: b43: Max Queue depth is now 6 Feb 24 19:27:12 mtech kernel: b43: Max Queue depth is now 7 Feb 24 19:27:12 mtech kernel: b43: Max Queue depth is now 8 Feb 24 19:27:12 mtech kernel: b43: Max Queue depth is now 9 Feb 24 19:27:12 mtech kernel: b43: Max Queue depth is now 10 Feb 24 19:28:46 mtech kernel: b43: Max Queue depth is now 11 Feb 25 00:07:19 mtech kernel: b43: Max Queue depth is now 12 Feb 25 00:07:19 mtech kernel: b43: Max Queue depth is now 13 Feb 25 00:09:12 mtech kernel: b43: Max Queue depth is now 14 Feb 25 00:09:50 mtech kernel: b43: Max Queue depth is now 15 Feb 25 00:09:50 mtech kernel: b43: Max Queue depth is now 16 Feb 25 00:09:50 mtech kernel: b43: Max queue depth at 16 Feb 25 00:09:54 mtech kernel: b43: Max queue depth at 16 Feb 25 00:10:55 mtech kernel: b43: Max queue depth at 16 Feb 25 00:26:24 mtech kernel: eth1: No ProbeResp from current AP 00:1a:70:46:ba:b1 - assume out of range The 00:26:24 event was the interface going offline. That happens with proprietary firmware, thus I think that problem is with the driver, rather than the firmware. In any case, I got no out-of-order cookies or poisoned skb's. There were no dropped packets nor PHY transmission errors. The above list is all the b43 messages in the log. I have reset the RX queue depth to the original value of 64 and have started another test. I would expect this change to have no effect, but I'll keep you informed. Larry -- 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