"ath0: device timeout" when environment is clear

[Lev Serebryakov]

Hello, Freebsd-wireless.

  Today something strange happens: my noisy environment becomes clear
 for several hours and my WiFi connection to notebook gives 2.5MiB/s
 of real file transfer. But I was unable to copy 2GiB file in one
 piece: ath0 on AP gives "device timeout" every 3-4 minutes!

  When environment is really noisy (as usual), I have only
 400-500KiB/s of real file transfer, but "ath0: device timeout"
 occurs only 1-2 times a day or even less.

-- 
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>