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  • Bruno Randolf's avatar
    ath5k: use SWBA to detect IBSS HW merges · 036cd1ec
    Bruno Randolf authored
    use SWBA (software beacon alert) interrupts to keep track of the next beacon
    time und check if a HW merge (automatic TSF update) has happened on every
    received beacon with the same BSSID.
    this is necessary because the atheros hardware will silently update the local
    TSF in IBSS mode, but not its beacon timers. if the TSF is ahead of the beacon
    timers no beacons are sent until the timers wrap around (typically after about
    1 minute).
    this solution is not very nice, since we have to look into every beacon, but
    there is apparently no other way to detect HW merges.
    drivers/net/wireless/ath5k/base.c:      Changes-licensed-under: 3-Clause-BSD
    drivers/net/wireless/ath5k/base.h:      Changes-licensed-under: 3-Clause-BSD
    Signed-off-by: default avatarBruno Randolf <>
    Signed-off-by: default avatarJohn W. Linville <>