• Felix Fietkau's avatar
    ath9k: remove support for the FIF_PROMISC_IN_BSS filter flag · 2e286947
    Felix Fietkau authored
    The hardware rx filter flag triggered by FIF_PROMISC_IN_BSS is overly broad
    and covers even frames with PHY errors. When this flag is enabled, this message
    shows up frequently during scanning or hardware resets:
    
    ath: Could not stop RX, we could be confusing the DMA engine when we start RX up
    
    Since promiscuous mode is usually not particularly useful, yet enabled by
    default by bridging (either used normally in 4-addr mode, or with hacks
    for various virtualization software), we should sacrifice it for better
    reliability during normal operation.
    
    This patch leaves it enabled if there are active monitor mode interfaces, since
    it's very useful for debugging.
    Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
    Cc: stable@kernel.org
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
    2e286947
recv.c 47.9 KB